CLEANING APPARATUS

Abstract

 The present disclosure provides a cleaning device. The cleaning device may include a machine body, a cleaning liquid tank, and a floor brush, wherein the floor brush may be connected to an end of the machine body, the cleaning liquid tank may be arranged above the floor brush, and the cleaning liquid tank may be configured to provide cleaning liquid for the floor brush or floor. When a user uses the cleaning device for cleaning work, the user may hold the machine body to control a moving direction of the floor brush. In the cleaning device, by setting a cleaning liquid tank on the floor brush, a volume and weight of the machine body can be reduced, which reduces an overall volume and weight of the cleaning device, thereby reducing a load and weight when the user operates the machine body and improving experience of the user during cleaning work.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to the Chinese Patent Application No. 202110587480.6, filed on May 27, 2021, the Chinese Patent Application No. 202110813176.9, filed on July 19, 2021, and the Chinese Patent Application No. 202111007095.6, filed on August 30, 2021, the contents of each of which are hereby incorporated by reference.

TECHNICAL FIELD

[0002] The present disclosure relates to cleaning device technology field, in particular, relates to a cleaning device.

BACKGROUND

[0003] With the improvement of living standards of the person, wet and dry vacuum cleaners have become increasingly popular. Currently, the wet and dry vacuum cleaners typically have a tank containing cleaning liquid and a tank for storing garbage that are arranged on a machine body of the vacuum cleaner, which can increase an overall volume and weight of the machine body and is not conducive to hand-held operation by the user. Meanwhile, the vacuum cleaner may occupy a relatively large space when it is not in use. In addition, when the user uses the vacuum cleaner to clean the floor in a non-open space (e.g., the floor under bed, sofa, coffee table, etc.), the user needs to rotate the machine body to be parallel to the floor or at a small angle relative to the floor. However, a large count of accessories added to the machine body can affect the rotation, thereby resulting in difficulty to perform cleaning operations in the non-open space.

[0004] Based on the above problems, it is desired to provide a cleaning device with high cleaning efficiency, wide range of scene applications, lightweight use, and simple and compact appearance.

SUMMARY

[0005] One aspect of the embodiments of the present disclosure may provide a cleaning device. The cleaning device may include a machine body, a cleaning liquid tank, and a floor brush, wherein the floor brush may be connected to an end of the machine body, the cleaning liquid tank may be arranged above the floor brush, and the cleaning liquid tank may be configured to provide cleaning liquid for the floor brush or floor.

[0006] In some embodiments, the cleaning liquid tank may be located on the floor brush, projections of the floor brush and the cleaning liquid tank along a height direction may be basically rectangular in shape, and a maximum size of the cleaning liquid tank along a length direction of the cleaning liquid tank may be basically consistent with a maximum size of the floor brush along the length direction of the floor brush.

[0007] In some embodiments, the floor brush may include a working portion, a maximum size of the working portion along the length direction of the working portion is 250-270 mm, a ratio of the maximum size of the working portion along a width direction of the working portion to the maximum size of the working portion along the length direction of the working portion may be 0.5-0.7, and/or a ratio of a volume of the cleaning liquid tank to a volume of the working portion may be 0.3-0.6.

[0008] In some embodiments, a ratio of a maximum size of a working portion of the floor brush along a height direction of the working portion to a maximum size of the working portion along the length direction of the working portion may be 0.25-0.55.

[0009] In some embodiments, a ratio of a maximum size of the cleaning liquid tank along a width direction of the cleaning liquid tank to a maximum size of a working portion of the floor brush along the width direction of the working portion may be 0.5-0.7.

[0010] In some embodiments, a ratio of a maximum size of the cleaning liquid tank along the height direction of the cleaning liquid tank to a maximum value of sums of sizes of a working portion of the floor brush along the height direction of the working portion and sizes of the cleaning liquid tank along the height direction of the cleaning liquid tank may be 0.4-0.7.

[0011] In some embodiments, a ratio of a capacity of the cleaning liquid tank and a volume of the cleaning liquid tank may be not less than 0.35.

[0012] In some embodiments, a center of gravity of the cleaning liquid tank along the height direction of the cleaning liquid tank may be projected in a middle region of the cleaning liquid tank.

[0013] In some embodiments, a bottom of the cleaning liquid tank may be provided with an outlet, the outlet may be provided with a valve assembly configured to control an opening and closing state of the outlet, an outlet area of the valve assembly may be greater than 3 mm².

[0014] In some embodiments, the floor brush may include an installation shell, an upper cover, and a rolling brush, two ends of the rolling brush may be rotatably connected to the installation shell, and the upper cover and the cleaning liquid tank may be located at an upper portion of the installation shell.

[0015] In some embodiments, the installation shell may include a bottom shell and a top cover, an installing chamber of the floor brush being formed between the bottom shell and the top cover, and the floor brush may include a suction port for inhaling garbage, the suction port being located at a front side of the installation shell and a rear side of the rolling brush, the installing chamber of the floor brush being provided with a first channel communicating with the suction port.

[0016] In some embodiments, the installing chamber of the floor brush may be provided with a pump, and the pump may be configured to pump out the cleaning liquid in the cleaning liquid tank.

[0017] In some embodiments, the top cover may include an accommodating slot, and the cleaning liquid tank being located within the accommodating slot, a top end of the pump may be higher than a lowest surface in the accommodating slot, and/or a top end of the first channel may be higher than the lowest surface in the accommodating slot.

[0018] In some embodiments, a first protrusion may be provided on a bottom surface of the accommodating slot and configured to at least partially accommodate the pump, and a bottom portion of the cleaning liquid tank is provided with a first concave configured to avoid the first protrusion.

[0019] In some embodiments, the floor brush may further include a first motor, the first motor being configured to drive the rolling brush to rotate, the first motor may be located in the installation chamber of the floor brush and on a side of the first channel away from the pump, or the first motor may be arranged within the rolling brush.

[0020] In some embodiments, the installation chamber may include a bottom shell, a side of the bottom shell may be fixed with a first rolling brush support part, the other side of the bottom shell is connected to a second rolling brush support through a magnetic attraction structure.

[0021] In some embodiments, a ratio of a maximum size of the rolling brush along the length direction of the rolling brush to the maximum size of the working portion of the floor brush along the length direction of the working portion may be not less than 0.9.

[0022] In some embodiments, a top surface of the cleaning liquid tank may be basically flush with a top surface of the upper cover, the cleaning liquid tank and the upper cover may be independently arranged, and the upper cover may be detachably connected to the installation shell.

[0023] In some embodiments, the upper cover may be installed with a nozzle, and the cleaning liquid in the cleaning liquid tank may be sprayed out from the nozzle under an action of the pump.

[0024] In some embodiments, the cleaning liquid tank may be detachably connected to the installation shell.

[0025] In some embodiments, the cleaning liquid tank may be installed on the installation shell through a magnetic attraction structure.

[0026] In some embodiments, along a height direction of the floor brush, a maximum size of the cleaning liquid tank may be greater than a size of the accommodating slot.

[0027] In some embodiments, along a length direction of the floor brush, two ends of the top cover may be provided with a convex edge, both sides of the cleaning liquid tank may be provided with a slot, and the convex edge may be correspondingly arranged in the slot.

[0028] In some embodiments, along a height direction of the floor brush, a ratio of a size of the slot to a maximum size of the cleaning liquid tank may be 0.4-0.7.

[0029] In some embodiments, along the length direction of the floor brush, a size of the convex edge may be 7-10 mm.

[0030] In some embodiments, along a height direction of the floor brush, the both sides of the cleaning liquid tank may be provided with a convex portion, the convex portion protruding towards the both sides of the cleaning liquid tank relative to the slot, and along the height direction of the floor brush, a maximum size of the convex portion may be 10-20 mm, and/or along the length direction of the floor brush, a size of the convex portion may be 8-15 mm.

[0031] In some embodiments, both sides of the upper cover and the cleaning liquid tank along a length direction of the floor brush may be provided with rounded corners or chamfers.

[0032] In some embodiments, the cleaning device may further include a handheld dust collection device, the machine body may be provided with a fixed seat, the handheld dust collection device may be arranged on the fixed seat, and the handheld dust collection device may be detachably connected to the machine body through the fixed seat.

[0033] In some embodiments, the cleaning device may further include a dirt storage tank, the floor brush may communicate with the dirt storage tank through the first channel, the dirt storage tank may be located at an end of the fixed seat away from the handheld dust collection device, and the dirt storage tank may be detachably connected to the machine body through the fixed seat.

[0034] In some embodiments, the dirt storage tank may include a channel, and the channel may be connected between the dirt storage tank and the handheld dust collection device.

[0035] In some embodiments, the fixed seat may be arranged with a through hole, and the channel may communicate with the handheld dust collection device through the through hole.

[0036] In some embodiments, a separator may be arranged in the dirt storage tank, and the separator may be configured to separate gas, liquid, or solid from garbage inside the dirt storage tank.

[0037] In some embodiments, the machine body may include a support seat of the dirt storage tank, and the dirt storage tank is arranged on the machine body through the support seat of the dirt storage tank.

[0038] In some embodiments, the support seat of the dirt storage tank may be rotatably connected to the machine body.

[0039] In some embodiments, the machine body may include a first locking structure, the first locking structure being configured to lock the handheld dust collection device on the machine body, and/or the machine body may include a second locking structure, the second locking structure being configured to lock the dirt storage tank on the machine body.

[0040] In some embodiments, the handheld dust collection device may include an attachment component, the attachment component may include one or more of a mite removal brush, a flat brush, a hair brush, a pet brush, a hose, and the attachment component may be detachably connected to the handheld dust collection device.

[0041] In some embodiments, the machine body may be rod-shaped, and a cross-sectional area of the fixed seat along a direction may perpendicular to a length direction of the machine body, a cross-sectional area of the handheld dust collection device along the direction perpendicular to the length direction of the machine body, and a cross-sectional area of the dirt storage tank along the direction perpendicular to the length direction of the machine may be greater than a maximum cross-sectional area of the machine body along the direction perpendicular to the length direction of the machine body.

BRIEF DESCRIPTION OF THE DRAWINGS

[0042] 

FIG. 1 is a schematic diagram illustrating an exemplary structure of a cleaning device according to some embodiments of the present disclosure;

FIG. 2 is a schematic diagram illustrating an exemplary disassemble structure of a cleaning device according to some embodiments of the present disclosure;

FIG. 3 is a schematic diagram illustrating an exemplary partial structure of a cleaning device according to some embodiments of the present disclosure;

FIG. 4 is a schematic diagram illustrating an exemplary partial fluid path of a second channel according to some embodiments of the present disclosure;

FIG. 5 is a schematic diagram illustrating an exemplary three-dimensional view of a floor brush according to some embodiments of the present disclosure;

FIG. 6 is a schematic diagram illustrating an exemplary right view of the floor brush shown in FIG. 5 according to some embodiments of the present disclosure;

FIG. 7 is a schematic diagram illustrating an exemplary overhead view of the floor brush shown in FIG. 5 according to some embodiments of the present disclosure;

FIG. 8 is a schematic diagram illustrating an exemplary structural exploded view of the floor brush shown in FIG. 5 according to some embodiments of the present disclosure;

FIG. 9 is a schematic diagram illustrating an exemplary right view of a cleaning liquid tank according to some embodiments of the present disclosure;

FIG. 10 is a schematic diagram illustrating an exemplary overhead view of a cleaning liquid tank according to some embodiments of the present disclosure;

FIG. 11A is a schematic diagram illustrating an exemplary structure of a cleaning liquid tank according to some embodiments of the present disclosure;

FIG. 11B is a schematic diagram illustrating an exemplary perspective view of a cleaning liquid tank according to some embodiments of the present disclosure;

FIG. 11C is a schematic diagram illustrating an exemplary structure of a valve assembly according to some embodiments of the present disclosure;

FIG. 12 is a schematic diagram illustrating an exemplary structure of a top cover according to some embodiments of the present disclosure;

FIG. 13 is a schematic diagram illustrating an exemplary fixed position of a motor according to some embodiments of the present disclosure;

FIG. 14 is a schematic diagram illustrating an exemplary right view of a rolling brush according to some embodiments of the present disclosure;

FIG. 15 is a schematic diagram illustrating an exemplary connection of a rolling brush and a gearbox according to some embodiments of the present disclosure;

FIG. 16 is a schematic diagram illustrating an exemplary cross-section view of a support assembly according to some embodiments of the present disclosure;

FIG. 17 is a schematic diagram illustrating an exemplary disassemble structure of a support assembly according to some embodiments of the present disclosure;

FIG. 18 is a schematic diagram illustrating an exemplary internal structure of a dirt storage tank according to some embodiments of the present disclosure.

FIG. 19 is a schematic diagram illustrating an exemplary overall structure of a dirt storage tank according to some embodiments of the present disclosure;

FIG. 20 is a schematic diagram illustrating an exemplary structure of a partition plate according to some embodiments of the present disclosure;

FIG. 21 is a schematic diagram illustrating an exemplary structure of a check valve according to some embodiments of the present disclosure;

FIG. 22 is a schematic diagram illustrating an exemplary opening state of a check valve according to some embodiments of the present disclosure;

FIG. 23 is a schematic diagram illustrating an exemplary closing state of a check valve according to some embodiments of the present disclosure;

FIG. 24 is a schematic diagram illustrating an exemplary cross-section view of a check valve according to some embodiments of the present disclosure;

FIG. 25 is a schematic diagram illustrating an exemplary structure of a cover according to some embodiments of the present disclosure;

FIG. 26 is a schematic diagram illustrating an exemplary state in which a partition plate is installed in a tank according to some embodiments of the present disclosure;

FIG. 27 is a schematic diagram illustrating an exemplary structure of a sewage tank on a rear side of a rod according to some embodiments of the present disclosure; and

FIG. 28 is a schematic diagram illustrating an exemplary structure of a sewage tank on a front side of a rod according to some embodiments of the present disclosure.

DETAILED DESCRIPTION

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present specification, the following briefly introduces the drawings that need to be used in the description of the embodiments. Apparently, the accompanying drawings in the following description are only some examples or embodiments of this specification, and those skilled in the art can also apply this specification to other similar scenarios. Unless obviously obtained from the context or the context illustrates otherwise, the same numeral in the drawings refers to the same structure or operation.

[0044] It should be understood that "system," "device," "unit" and/or "module" as used herein is a method for distinguishing different components, elements, parts, parts or assemblies of different levels. However, the words may be replaced by other expressions if other words can achieve the same purpose.

[0045] As indicated in the specification and claims, the terms "a," "an," "an," and/or "the" are not specific to the singular and may include the plural unless the context clearly indicates an exception. Generally speaking, the terms "comprising" and "comprising" only suggest the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or device may also contain other steps or elements.

[0046] In some embodiments of the present disclosure, a cleaning device is provided. In some embodiments, the cleaning device may include a machine body, a cleaning liquid tank, and a floor brush. The floor brush is connected to an end of the machine body, the cleaning liquid tank is arranged above the floor brush, and the cleaning liquid tank is configured to provide cleaning liquid for the floor brush or floor. In some embodiments, the machine body may be configured to carry other assemblies of the cleaning device (e.g., the floor brush), and one end of the machine body (e.g., a lower end) is connected to the floor brush. When a user uses the cleaning device for cleaning work, the user may hold the machine body to control a moving direction of the floor brush. In the cleaning device provided in the embodiments of the present disclosure, by setting a cleaning liquid tank on the floor brush, a volume and weight of the machine body can be reduced, which reduces an overall volume and weight of the cleaning device, thereby reducing a load and weight when the user operates the machine body and improving experience of the user during cleaning work. In addition, the cleaning liquid tank is combined with the floor brush, by adjusting a size and proportion of the floor brush (e.g., a working portion of the floor brush) and the cleaning liquid tank in terms of length, width, and height, it is possible to reduce the size of the floor brush while maintaining a same capacity of the cleaning liquid tank, which makes the structure of the floor brush more compact, practical, compact, and lightweight. Furthermore, the cleaning device has high cleaning efficiency in an open space and can effectively clean bed bottom and corners smoothly.

[0047] FIGs. 1-3 are schematic diagrams illustrating exemplary structures of a cleaning device according to some embodiments of the present disclosure. As shown in FIGs. 1, 2, and 3, the cleaning device may include a machine body 5, a cleaning liquid tank 112, and a floor brush 1. The floor brush 1 may be connected to one end of the machine body 5, and the cleaning liquid tank 112 is arranged above the floor brush 1. The cleaning liquid tank 112 is configured to provide cleaning liquid for the floor brush 1 or floor.

[0048] In some embodiments, the machine body 5 may include a rod 51 that is a rod-shaped, and one end of the rod 51 (e.g., a bottom end of the rod 51 shown in FIG. 2) is connected to the floor brush 1. In some embodiments, the machine body 5 may include a handle end 512, the handle end 512 may be located at an end of the rod 51 away from the floor brush 1 (e.g., a top end of the rod 51 shown in FIG. 2), so as to facilitate the user to hold the cleaning device.

[0049] In some embodiments, the cleaning device may include a handheld dust collection device 6 (also known as a handheld vacuum cleaner). In some embodiments, the handheld dust collection device 6 may include a dust cylinder assembly 61 and a power assembly 62. The power assembly 62 may provide power for the handheld dust collection device 6 to absorb fluid from an external environment and expel gas from the fluid to the external environment.

[0050] The dust cylinder assembly 61 may be a structure with an internal cavity and may separate garbage in the fluid. For example, a filter structure in the dust cylinder assembly 61 may separate the solid (e.g., particulate matter, dust, etc.) and the gas in the fluid. The dust cylinder assembly 61 may be connected to the power assembly 62 to form a channel for fluid flow. When the handheld dust collection device 6 is working, under an action of the power assembly 62, an air inlet 610 of the dust cylinder assembly 61 may absorb the fluid from the external environment, the gas in the fluid may pass through the dust cylinder assembly 61 and be discharged into the external environment, and the solid in the fluid may remain in the dust cylinder assembly 61.

[0051] In some implementations, the dust cylinder assembly 61 is detachably connected to the power component 62 for cleaning the garbage in the dust cylinder assembly 61. The detachable connection may include a threaded connection, clamping, bonding, magnetic suction, or the like. It should be noted that the handheld dust collection device 6 may not only handle the fluid from the external environment, but also handle the fluid from other components (e.g., a dirt storage tank 7) in the cleaning device.

[0052] In some embodiments, the machine body 5 may include a fixed seat 8, and the fixed seat 8 may protrude relative to the rod 51 of the machine body 5. The handheld dust collection device 6 may be detachably connected to the machine body 5 through the fixed seat 8.

[0053] In some embodiments, the fixed seat 8 may be provided with a through hole 81, and one end of the air inlet 610 in the dust cylinder assembly 61 may be connected to the through hole 81 in a mating manner. The connection in a mating manner refers to a shape of one end of the air inlet 610 in the dust cylinder assembly 61 matching a shape of the through hole 81, so that the dust cylinder assembly 61 may form a sealed channel with the through-hole 81, thereby processing the fluid from the dirt storage tank 7. In addition, the user may directly remove the handheld dust collection device 6 that is plugged into the fixed seat 8 for separate use.

[0054] In some embodiments, the cleaning device may include the dirt storage tank 7, and the dirt storage tank 7 communicates with the floor brush 1 through a first channel 23 (also referred to as a floor brush channel as shown in FIG. 8). During a cleaning process, the garbage in the external environment may enter the dirt storage tank 7 through the first channel 23, and the dirt storage tank 7 may be configured to perform a first stage separation process on the garbage entering an interior of the dirt storage tank 7. For example, the first stage separation process may include a solid-liquid separation process, a solid-gas separation process, a liquid-gas separation process, or the like. In some embodiments, the dirt storage tank 7 may be located at one end of the fixed seat 8 away from the handheld dust collection device 6, and the dirt storage tank 7 is detachably connected to the machine body 5 through the fixed seat 8. For example, an end of the dirt storage tank 7 away from the floor brush 1 is connected to an end of the fixed seat 8 away from the handheld dust collection device 6 in a mating manner to achieve a detachable connection between the dirt storage tank 7 and the fixed seat 8.

[0055] In some embodiments, the machine body 5 is provided with a second channel 50 that connects the first channel 23 with the dirt storage tank 7. The second channel 50 may be arranged inside the machine body 5 and extend along a length direction of the machine body 5 (i.e., a Y direction shown in FIG. 1). One end of the second channel 50 is connected to the first channel 23, and the other end of the second channel 50 is connected to an interior of the dirt storage tank 7. The garbage entering the first channel 23 may enter the interior of the dirt storage tank 7 through the second channel 50. The second channel 50 is arranged in the machine body 5, which can reduce an overall volume of the machine body 50, thereby reducing an overall weight of the cleaning device and improving the user experience.

[0056] As shown in FIG. 1-FIG. 4, in some embodiments, an inlet of the second channel 50 is connected to an outlet of the first channel 23, and an outlet of the second channel 50 is connected to the dirt storage tank 7. In some embodiments, the outlet of the second channel 50 may be located at a bottom, a side, or an upper part of the dirt storage tank 7. In some embodiments, the dirt storage tank 7 may be fluidly connected to the handheld dust collection device 6 through the through hole 81 of the fixed seat 8. Specifically, the dirt storage tank 7 may be fluidly connected to the dust cylinder assembly 61 through the through hole 81 of the fixed seat 8. The fluid separated by the first stage separation process of the dirt storage tank 7 may enter the air inlet 610 of the handheld dust collection device 6 through the through hole 81.

[0057] When the cleaning device is in use, the handheld dust collection device 6 may be fluidly connected to the dirt storage tank 7 hermetically, and the dirt storage tank 7 may be fluidly connected to the second channel 50 hermetically. The power assembly 62 may provide a suction for cleaning the garbage. The fluid in the external environment may pass through a suction port 211, the first channel 23, the second channel 50, the dirt storage tank 7, and dust cylinder assembly 61 sequentially. The processed fluid may be discharged from an exhaust port of the power assembly 62 to the external environment. Specifically, when the fluid flows in the dirt storage tank 7 and the dust cylinder assembly 61, a mixed fluid with gas, dust, and/or liquid may be separated by the first stage separation process for separating the gas, dust, and/or liquid performed by the dirt storage tank 7; the dust and/or liquid may be stored in the dirt storage tank 7, and the fluid separated by the first stage separation process may flow from the dirt storage tank 7 to the dust cylinder assembly 61 for a second stage separation process for the dust and gas separation, the separated clean air may be discharged from the power assembly 62.

[0058] It should be noted that the fluid in the present disclosure may be a clean airflow or an airflow containing the garbage. In some embodiments, the garbage may include at least one of dust, solid waste (e.g., cigarette butts, paper scraps, rice grains, etc.), and dirty liquid (e.g., orange juice, dirty water, clean water, egg liquid, etc.).

[0059] When cleaning the garbage in a small space, the user may individually remove the handheld dust collection device 6 for directly use, which makes the usage scenarios of the cleaning device more diverse. Under a suction of the power assembly 62, the fluid may enter the dust cylinder assembly 61 through the air inlet 610 of handheld dust collection device 6 for the dust and gas separation, and the separated clean air may be discharged from power assembly 62.

[0060] To improve a separation effect of the dirt storage tank 7, in some embodiments, a separator (not shown in the figure) may be installed inside the dirt storage tank 7, and the separator may be configured to separate the gas, liquid, or solid from the garbage in the dirt storage tank 7. The separator may separate the gas, dust, and/or liquid after the fluid enters the interior of the dirt storage tank 7. The dust and/or liquid may be stored at a bottom of the dirt storage tank, and the separated gas may be discharged to the external environment through the through hole 81 and the dust cylinder assembly 61 under an action of the power assembly 62 in the handheld dust collection device 6. In some embodiments, the separator may be a cyclone separator. The cyclone separator herein can achieve an effect of centrifugal separation, which may not be limited herein. In some embodiments, the separator may also be other separators, such as a filter type separator, an electrostatic separator, or the like.

[0061] The handheld dust collection device 6 and the dirt storage tank 7 may be detachably connected to the machine body through the fixed seat 8. In some embodiments, to improve a stability between the handheld dust collection device 6, the dirt storage tank 7, and the machine body 5, the machine body 5 may include a first locking structure 92, and the first locking structure may be configured to lock the handheld dust collection device 6 on the machine body 5. In some embodiments, the machine body 5 may include a second locking structure 91, and the second locking structure may be configured to lock the dirt storage tank 7 on the machine body 5. By arranging the first locking structure 92 and the second locking structure 91, the handheld dust collection device 6 and the dirt storage tank 7 may be both separately detachable relative to the machine body 5. In some embodiments, the first locking structure 92 and the second locking structure 91 may be a locking buckle structure, a buckle structure, a magnetic suction structure, an adhesive structure, or the like.

[0062] As shown in FIG. 3, the machine body 5 may also include a support seat 93 of the dirt storage tank. The support seat 93 of the dirt storage tank may support the dirt storage tank 7 from a bottom or side of the dirt storage tank, thereby enabling the dirt storage tank 7 to be connected to the machine body 5 more stably.

[0063] When the second locking structure 91 unlocks the dirt storage tank 7, one end of the support seat 93 of the dirt storage tank may move away from the machine body 5 automatically to form a certain angle between the dirt storage tank 7 and the machine body 5, thereby facilitating the user to remove the dirt storage tank 7. The certain angle herein may not exceed 45°. For example, the certain angle may be 15°, 20°, 30°, 45°, or the like. It should be noted that the angle may also be greater than 45°, such as 50°, 60°, and other angles. A specific value of the angle may be selected according to an actual situation, which can enable the user to remove the dirt storage tank 7 and prevent the liquid overflow from the dirt storage tank 7.

[0064] In some embodiments, the support seat 93 of the dirt storage tank may be pivotally connected to the machine body 5, and one end away from the pivot portion may be constructed with a plate-shaped or block-shaped plug element. An elastic element may be provided between the support seat 93 of the dirt storage tank and the machine body 5, and the elastic element may bounce the support seat 93 of the dirt storage tank relative to the machine body 5, so that the plug element automatically moves away from the machine body 5. For example, in some embodiments, one end of the dirt storage tank 7 may be connected to the fixed seat 8 in a mating manner, and the other end of the dirt storage tank 7 may be connected to the support seat 93 of the dirt storage tank. At this time, a part of a side wall of the dirt storage tank 7 may be attached to the machine body 5, and the elastic element may be in a compressed state under the action of the dirt storage tank 7 and the plug element. When the user separates the dirt storage tank 7 from the fixed seat 8, under an elastic force of the elastic element, the plug element may move away from the machine body 5, and at the same time, the plug element may drive the dirt storage tank 7 away from the machine body 5. In some embodiments, the elastic element may include one or more of springs, leaf springs, bellows, or the like. The dirt storage tank 7 may be provided with a socket element 70 that may be inserted into the plug element. When the plug element rotates, the dirt storage tank 7 may be connected to the plug element through the socket element 70. For example, when the plug element moves away from the machine body 5 under an action of the elastic element, the dirt storage tank 7 may moves away from the machine body 5 together with the plug element. The process of the dirt storage tank 7 moving away from the machine body 5 may be regarded as an automatic swinging out of the dirt storage tank 7. In some embodiments, positions of the plug element and socket element may be exchanged to achieve the effect of automatic swinging out the dirt storage tank 7.

[0065] When there is liquid in the dirt storage tank 7, if an angle of the automatic swinging out is too large, the liquid may be prone to splashing or even overflowing. In some embodiments, the angle of the automatic swinging out of the dirt storage tank 7 relative to the machine body 5 is no more than 45°. Specifically, a maximum rotation amplitude of the support seat 93 of the dirt storage tank may be limited by installing a limiting plate on the machine body 5. In addition, to avoid the automatic swinging out too rapidly, causing the liquid in the dirt storage tank 7 to shake violently, in some embodiments, a rotary damper may be installed at the pivot portion of the support seat 93 of the dirt storage tank.

[0066] By arranging a fixed seat 8 protruding outward relative to the machine body 5, a center of gravity and most of the weight of the handheld dust collection device 6 may be supported on the fixed seat 8 instead of the machine body 5. In addition, a first locking structure 92 may be arranged on the machine body 5, through the cooperation of the fixed seat 8 and the first locking structure 92, the handheld dust collection device 6 can be stably fixed. In addition, by installing a support seat 93, a fixed seat 8, and a second locking structure 91 on the machine body 5, a contact area between the machine body 5 and the dirt storage tank 7 can be reduced.

[0067] In the cleaning device provided in the embodiments of the present disclosure, a fixation of handheld dust collection device 6 or the dirt storage tank 7 is achieved through the structures such as the fixed seat 8, the locking structure (e.g., the first locking structure 92 and the second locking structure 91), and the support seat 93 of the dirt storage tank, which can minimize the requirement for a support area of the machine body 5, so that the rod 51 may be constructed into a slender rod shape, thereby reducing an overall weight of the machine body 5, for example, the overall weight of the machine body may be reduced by more than 70%, and an overall appearance of the cleaning device can be more concise and refreshing.

[0068] Further, a cross-sectional area of the rod 51 with the slender rod-shaped shows no significant change. It should be understood that in order to facilitate the installation of necessary accessories such as the locking structure, the cross-sectional area of the rod 51 (i.e., an area of a section perpendicular to a length direction of the rod 51) inevitably has some changes. The no significant change herein refers to that a majority of the cross-sectional area of the rod 51 with the rod-shaped along a length direction (i.e., the Y direction shown in FIG. 1) has no significant change. The cross-sectional area of the rod 51 has a minimum value and a maximum value, and the maximum value of the cross-sectional area of the rod 51 may be less than any one of an average cross-sectional area of the fixed seat 8, an average cross-sectional area of the handheld dust collection device 6, or an average cross-sectional area of the dirt storage tank 7. The cross-sectional area of the fixed seat 8 refers to a cross-sectional area along a direction perpendicular to a length direction the rod 51. Accordingly, the average cross-sectional area of the fixed seat 8 refers to an average of cross-sectional areas of the fixed seat 8 at different positions along the length direction of the rod 51. The average cross-sectional area of the handheld dust collection device 6 refers to an average of cross-sectional areas of handheld dust collection device 6 at different positions along the length direction of the rod 51. The average cross-sectional area of the dirt storage tank 7 refers to an average of cross-sectional areas of the dirt storage tank 7 at different positions along the length direction of the rod 51. In some embodiments, the maximum value of the cross-sectional area of the rod 51 may be less than half of any one of the average cross-sectional area of the fixed seat 8, the average cross-sectional area of the handheld dust collection device 6, or the average cross-sectional area of the dirt storage tank 7 to ensure a portability of the rod 51 with the slender rod-shaped. In some embodiments, a ratio of a size W1 of the rod 51 along a width direction (i.e., a X direction shown in FIG. 1) of the rod 51 to a size L1 of the rod 51 along the length direction of the rod 51 may be 0.02-0.06. The size W1 of the rod 51 along the width direction of the rod 51 may be 43 mm-49 mm, and the size L1 of the rod 51 along the length direction of the rod 51 may be 1000 mm-1200 mm. Through the above arrangement, the overall weight of the machine body can be reduced, making it easy for the user to hold and use, and optimizing the overall size and weight of the cleaning device.

[0069] In some embodiments, the fixed seat 8 may be approximately circular in shape, and a ratio of a maximum size of the fixed seat 8 along the width direction (e.g., W2 shown in FIG. 2) of the fixed seat 8 to the size W1 of the rod 51 along the width direction of the rod 51 may be 1.8-3, which can ensure that an overall width of the fixed seat 8 and the rod 51 is designed to be as small as possible while ensuring performance, so as to facilitate the control of the rod 51 to extend the floor brush deeper into the bed bottom. Projecting along the length direction of the machine body 5, and a ratio of a projection area of the fixed seat to a projection area of the rod may be 6.5-9. The projection area refers to an area enclosed by an outer edge of the cross-sectional area. Specifically, the projection area of fixed seat 8 may be 55-80 cm².

[0070] In some embodiments, the handheld dust collection device 6 may also include an attachment component. The attachment component may include one or more of a mite removal brush, a flat brush, a hair brush, a pet brush, and a hose, and the attachment component may be detachably connected to the handheld dust collection device 6. When the handheld dust collection device is used separately, the attachment component may be connected to the handheld dust collection device 6. In some embodiments, the attachment component may be connected to the handheld dust collection device 6 through a connecting element to be suitable for whole room cleaning in various scenarios. In some embodiments, the connecting element may include hoses, long pipes, or the like.

[0071] It should be understood that the structures of the cleaning device provided in FIGs. 1-4 are for illustrative purposes only and are not intended to limit the scope of the present disclosure. For technical personnel in the field, various deformations and modifications may be made under the guidance of the application. The deformations and modifications fall within the protection scope. In some embodiments, a count of elements shown in the figures may be adjusted according to the actual situation. In some embodiments, the one or more elements shown in FIGs. 1-4 may be omitted, or one or more other elements may be added or removed. In some embodiments, an element may be replaced by other components that can achieve similar functions. In some embodiments, an element may be split into multiple sub-elements, or the multiple sub-elements may be merged into a single element.

[0072] FIG. 5 is a schematic diagram illustrating an exemplary three-dimensional view of a floor brush according to some embodiments of the present disclosure. As shown in FIG. 5, the floor brush 1 may include a working portion 11 and a connecting portion 12. The floor brush 1 may include a front portion and a rear portion that are relative to each other along a width direction (e.g., the W direction shown in FIG. 5) of the floor brush 1, the connecting portion 12 may be arranged at a rear of the working portion 11, and the connecting portion 12 is connected to the machine body 5. In some embodiments, the working portion 11 and the connecting portion 12 may be an integrated structure or independent of each other. In some embodiments, the working portion 11 may be composed of a floor brush body 111 and a cleaning liquid tank 112 detachably installed on the floor brush body 111. The floor brush body 111 may be contacted with a surface to be cleaned directly and may be used to clean the garbage on the surface to be cleaned. The cleaning liquid tank 112 may store cleaning liquid such as clean water, cleaning agents, or care agents inside. In scenarios where the surface to be cleaned needs to be sprayed wet, the cleaning liquid may be pumped from the cleaning liquid tank 112 to the surface to be cleaned.

[0073] In some embodiments, the cleaning liquid tank 112 may be made of transparent or non-transparent materials, so that the user may determine the amount of cleaning liquid in the cleaning liquid tank 112. In some embodiments, the cleaning liquid tank 112 may be an integrally formed structure. In some embodiments, the transparent material may include but is not limited to polymethyl methacrylate, polystyrene, polycarbonate, styrene acrylonitrile, ABS plastic, or any combination thereof. In some embodiments, the cleaning liquid tank 112 may be a tank structure composed of multiple components. For example, the cleaning liquid tank 112 may include a first shell and a second shell arranged sequentially from top to bottom, and a bottom of the first shell and a top of the second shell may be connected to form the cleaning liquid tank 112 with an internal chamber. In some embodiments, the connection manners of the first shell and the second shell may include one or more of bonding, clamping, welding, or the like. For example, the first shell and second shell may be welded using UV curable adhesive (UV glue). In some embodiments, material of the first shell and second shell may be the same or different. For example, in order to increase a weight of cleaning liquid tank 112 to increase pressure of the floor brush 1 on the cleaning surface, and accordingly, improve the cleaning effect, in some embodiments, the first shell may be made of materials such as polymethyl methacrylate, polystyrene, polycarbonate, styrene acrylonitrile, ABS plastic, or the like, and the second housing shell may made of materials such as glass, ceramics, metal (e.g., stainless steel), or the like. In some embodiments, a shape of the cleaning liquid tank 112 may be basically rectangular or trapezoidal in shape.

[0074] When the cleaning liquid tank 112 is filled with the cleaning liquid, a center of gravity of the cleaning liquid tank 112 along a height direction of the cleaning liquid tank 112 may be projected in a middle region of the cleaning liquid tank 112. It should be noted that the center of gravity of cleaning liquid tank 112 may move up and down along a height direction of cleaning liquid tank 112 with the amount of cleaning liquid. For example, when the cleaning liquid tank 112 is a regular structure (e.g., an approximate rectangular structure) and the amount of cleaning liquid in the cleaning liquid tank 112 is at its maximum value (i.e., the cleaning liquid tank 112 is filled with cleaning liquid), the center of gravity of the cleaning liquid tank 112 may be a geometric center of the cleaning liquid tank 112. As another example, when the amount of cleaning liquid in the cleaning liquid tank 112 is less than a capacity of the cleaning liquid tank 112, the center of gravity of the cleaning liquid tank 112 may be located below the geometric center of the cleaning liquid tank 112. In this way, when an outlet is opened at the bottom of the cleaning liquid tank 112, the cleaning liquid can easily flow out of the outlet of the cleaning liquid tank 112 due to the gravity. In addition, when the cleaning liquid tank 112 is an irregular structure, for example, the cleaning liquid tank 112 may include a concave or convex region relative to the side wall of the cleaning liquid tank 112, and the center of gravity of the cleaning liquid tank 112 along the height direction of the cleaning liquid tank 112 may be projected in the middle region of the cleaning liquid tank 112, so that when the user extracts the cleaning liquid tank 112 containing the cleaning liquid, the center of gravity of the cleaning liquid tank 112 may not shift excessively, so that the user can grasp it.

[0075] In some embodiments, the outlet of the cleaning liquid tank 112 may be located in a central region at the bottom of the cleaning liquid tank 112 to facilitate an outflow of cleaning liquid. In some embodiments, the outlet of the cleaning liquid tank 112 may also be located at other positions of the cleaning liquid tank 112, such as on a side wall of the cleaning liquid tank 112. In order to facilitate the arrangement of a pipeline (e.g., a first pipeline) and reduce a length of the pipeline, the outlet of the cleaning liquid tank 112 may be located on a side of the cleaning liquid tank away from the rod.

[0076] In some embodiments, the cleaning liquid in the cleaning liquid tank 112 may be sprayed out through a cleaning liquid supply assembly (e.g., a nozzle 1120 and a pump 1121 shown in FIG. 8). The pump 1121 may be configured to pump out the cleaning liquid from the cleaning liquid tank 112 to the nozzle 1120, and the nozzle 1120 may serve as an output end of the cleaning liquid supply assembly and spray the cleaning liquid onto the surface to be cleaned, thereby cleaning and/or caring for the surface to be cleaned.

[0077] In some embodiments, the cleaning liquid tank 112 may include an inlet 11202 for injecting the cleaning liquid or aqueous solution. The inlet 11202 may be located on a top wall of the cleaning liquid tank 112, and the inlet 11202 may penetrate the top wall of the cleaning liquid tank 112 and be connected to a chamber inside the cleaning liquid tank 112. In some embodiments, a hole plug may be arranged at the inlet 11202, and the hole plug may be matched with the inlet 11202, for example, the hole plug and the inlet 11202 may be connected through a threaded connection, an interference fit, an insertion, and or the like. In some embodiments, the cleaning liquid tank 112 may include one or more chambers. For example, the cleaning liquid tank 112 may include a chamber, and the cleaning liquid may be located in the chamber. As another example, the cleaning liquid tank 112 may include a first chamber and a second chamber, the first chamber may be connected to the second chamber, the first chamber may be configured to place aqueous solution, the second chamber may be configured to place detergent, and the aqueous solution may be injected into the first chamber to dissolve or dilute the detergent to form cleaning liquid.

[0078] In some embodiments, the cleaning liquid tank 112 may include a first gripping portion 11203 for the user to hold, and the first gripping portion 11203 may be located on the top wall of the cleaning liquid tank 112. In some embodiments, the first gripping portion 11203 may be a buckle element. In some embodiments, the first gripping portion 11203 may include a first concave portion that is recessed downwards relative to a top of the cleaning liquid tank 112. The first concave portion may form a handle like structure with the top wall of the cleaning liquid tank 112 to facilitate the users to take the cleaning liquid tank 112. In some embodiments, the cleaning liquid tank 112 may also include a second gripping portion 11204, and the second gripping portion 11204 may be located on the side wall of the cleaning liquid tank 113 towards the connecting portion 12. For example, the second gripping portion 11204 may be a concave region on the side wall of the cleaning liquid tank 113 towards the connecting portion 12. In some embodiments, the first gripping portion 11203 and/or the second gripping portion 11204 may be located in a middle region of the cleaning liquid tank 112. After the cleaning liquid tank 112 is filled with water, the bottom of the cleaning liquid tank 112 needs other assemblies (e.g., a first protrusion 2203 for accommodating the pump 1121) to cooperate to form a concave region, so that the center of gravity of the cleaning liquid tank 112 shifts relative to a side away from the concave region. However, the center of gravity of the cleaning liquid tank 112 is still within a projection of the first gripping portion 11203 or the second gripping portion 11204, this arrangement allows the cleaning liquid tank 112 to be basically balanced when the user moves the cleaning liquid tank 112 near the machine body 5. In addition, the cleaning liquid tank 112 may be roughly in a shape of a dumbbell, and the user may grip the cleaning liquid tank 112 through the first gripping portion 11203 or the second gripping portion 11204. For example, the first gripping portion 11203 is a buckle, the second gripping portion 11204 may be roughly a concave region, and the user may grip the cleaning liquid tank 112 like a dumbbell.

[0079] For the convenience of description, the length direction in the present disclosure may be represented by a L direction shown in FIG. 5, the height direction may be represented by a H direction in FIG. 5, and the width direction may be represented by a W direction in FIG. 5.

[0080] By installing the cleaning liquid tank 112 on the floor brush body 111, it is convenient for the user to hold the rod and clean a space under the bed. At the same time, the use of the above structure may eliminate the need for longer cleaning liquid pipes, resulting in faster spray response. In addition, this arrangement may also increase an overall weight of the floor brush 1, thereby increasing a pressure of floor brush 1 on the ground and improving the cleaning effect.

[0081] The cleaning liquid tank 112 may be arranged above the floor brush 1, which may cause a size of the working portion 11 to increase, thereby making it difficult to easily drag it to regions such as the bed bottom and corners for cleaning. Combined with FIGs. 5-7, in order to solve the above problem, in some embodiments, a projection of the working portion 11 along the height direction (e.g., the H direction shown in FIG. 5) of the working portion 11 may be basically rectangular in shape, and a maximum size a of the working portion 11 along the length direction (e.g., the L direction shown in FIG. 5) of the working portion 11 may be not greater than 270 mm. Compared to other shapes, the working portion 11 with a basic rectangular projection shape has a relatively large cleaning range and occupies less space during a single push pull, facilitating the arrangement of the connecting portion 12 and the cleaning liquid tank 112. In addition, by adjusting the maximum size a of the working portion along the length direction of the working portion, the efficiency of the working portion 11 for cleaning the corners can be improved. When the maximum size of working portion 11 along the length direction of the working portion is too small, the cleaning efficiency in an open region may be relatively low. Preferably, the maximum size a of the working portion 11 along the length direction of the working portion may be 250-270 mm.

[0082] The working portion 11 may not only serve as an upstream assembly for inhaling garbage, but also needs to cooperate with the connecting portion 12 to support the machine body, the handle, and other assemblies, and may also play a role in installing the cleaning liquid tank 112. In order to achieve a possible small size for the working portion 11 while meeting a stable support function and installation carrier function of the working portion, in some embodiments, a length or width of the working portion 11 may be adjusted. In some embodiments, a ratio of a maximum size b along the width direction of the working portion 11 to a maximum size a along the length direction of the working portion may be 0.5 to 0.7. It should be noted that as a frame structure of the floor brush 1, a size of the working portion 11 may be approximated as a size of the floor brush 1.

[0083] To ensure that the cleaning liquid supply component may spray sufficient area, in some embodiments, the capacity of the cleaning liquid tank 112 may be 0.35-0.6 L. Due to the cleaning liquid tank 112 having a shell, a volume (i.e., a required space) of the cleaning liquid tank 112 may inevitably exceed the capacity of the cleaning liquid tank 112. In some embodiments, a ratio of the capacity of the cleaning liquid tank 112 to the volume of the cleaning liquid tank 112 may be no less than 0.35. When presetting the capacity of the cleaning liquid tank, the cleaning liquid tank 112 may be limited to not occupy too much space, thus improving an overall compactness of the working portion 11.

[0084] In some embodiments, a ratio of the volume of the cleaning liquid tank 112 to the volume of the working portion 11 may be 0.3-0.6. In this way, while determining a length and width of the working portion 11, the height of the working portion 11 may be constrained, allowing the floor brush 1 to easily extend into height-restricted regions such as the bottom of the bed and the bottom of the sofa for cleaning. In some embodiments, a ratio of a maximum size c along the height direction of the working portion 11 to the maximum size a along the length direction of the working portion 11 may be 0.25-0.55, which can satisfy the cleaning performance, convenience, and aesthetics of the working portion simultaneously.

[0085] In order to fully utilize an installation space on the floor brush body 111 and match a basic shape of the working portion 11, in some embodiments, the projection of the cleaning liquid tank 112 along the height direction of the cleaning liquid tank 112 may be basically rectangular in shape, and a maximum size d of the cleaning liquid tank 112 along the length direction of the cleaning liquid tank 112 may be basically consistent with the maximum size a of the working part 11 along the length direction of the working part 11. It should be understood that along the length direction of the floor brush 1, a distance between the two sides of the cleaning liquid tank 112 may be basically equal to a distance between the two sides of the floor brush body 111, which can not only retain a circumferential limit function of the installation shell on the cleaning liquid tank 112, but also allow an upper structure of the cleaning liquid tank 112 to expand to be basically consistent with the maximum size of the working portion 11 along the length direction of the working portion 11. At the same time, the size of the cleaning liquid tank 112 along the length direction of the cleaning liquid tank 112 may be designed as large as possible, which is convenient for adjusting the size of the cleaning liquid tank 112 along the height direction and width direction of the cleaning liquid tank 112, thereby facilitating a design of installation positions of the assemblies on the working portion 11.

[0086] It should be noted that due to the need to construct necessary limiting structures and/or avoid other assemblies (e.g., the connecting portion 12) during the installation, the cleaning liquid tank 112 can not be a regular rectangle. in the top view. The basically rectangular in shape herein refers to both opposite edges having parts that can achieve basic parallelism; in addition, the projection of working portion 11 along the height direction of working portion 11 that is basically rectangular in shape should also be understood in this way.

[0087] Further, a rear end of the cleaning liquid tank 112 may constitute at least a portion of the rear end of the working portion 11, i.e., the cleaning liquid tank 112 may be arranged as far back as possible to avoid the assemblies located above the floor brush body 111.

[0088] In some embodiments, the floor brush body 111 may include an installation shell 1111, an upper cover 1112, and a rolling brush 1113. The rolling brush 1113 may be rotatably arranged at a front of the installation shell 1111 for rolling and cleaning the surface to be cleaned, and the upper cover 1112 may be arranged at an upper part of the rolling brush 1113 to cover at least a part of the rolling brush and serve as an installation carrier. Meanwhile, the cleaning liquid tank 112 may be located at a rear of the upper cover 1112. Based on the above position arrangements, a structure of working portion 11 can be more compact with a high space utilization and aesthetic practicality.

[0089] In some embodiments, the cleaning liquid tank 112 and the upper cover 1112 may be integrated, and when adding the cleaning liquid, the cleaning liquid tank 112 and the upper cover 1112 may to be removed together.

[0090] In some embodiments, the cleaning liquid tank 112 and the upper cover 1112 may be arranged separately. It should be understood that the cleaning liquid tank 112 and the upper cover 1112 may be independent to each other, which can facilitate the separate removal and filling of the cleaning liquid tank 112, thereby solving a problem of inconvenient for the user operation when the cleaning liquid tank 112 and the upper cover 1112 are integrated.

[0091] In order to further ensure that the working portion 11 can smoothly extend into the region under the bed, the top of the working portion 11 may be a nearly flat structure, so that there is no protruding portion on the top of the working portion 11. That is to say, a top surface of the cleaning liquid tank 112 may be basically flush with a top surface of the upper cover 1112, and the two top surfaces may be basically flat to avoid step surfaces.

[0092] During the cleaning process, both sides of working portion 11 along the length direction of working portion 11 may be prone to collision with obstacles. To reduce the impact caused by the collision, in some embodiments, the upper cover 1112 and the cleaning liquid tank 112 located on an upper portion of working portion 11 may be arranged with rounded corners or chamfers on both sides along the length direction of the floor brush.

[0093] Referring to FIGs. 5-10, in some embodiments, the upper cover 1112 may be detachably connected to the installation shell 1111, which can clean and disassemble the rolling brush 1113 conveniently. Compared to integrating the cleaning liquid tank 112 and the upper cover 1112, by separating the cleaning liquid tank 112 and the upper cover 1112 and detachably connecting the upper cover 1112 to the installation shell 1111, the structure of the working portion 11 is further optimized, which can better match the user's usage habits.

[0094] It should be noted that if a width of the upper cover 1112 is too small, beneficial effects of cleaning and disassembling the rolling brush may be difficult to reflect. Therefore, in some embodiments, a ratio of a maximum size e (shown in FIG. 9 and FIG. 10) of the cleaning liquid tank 112 along the width direction of the cleaning liquid tank 112 to the maximum size b of the working portion 11 along the width direction of the working portion 11 may be 0.5 to 0.7. By limiting the maximum size (e.g., a maximum width) of the cleaning liquid tank 112 along the width direction of the cleaning liquid tank 112, a sufficient installation space may be provided for the upper cover 1112.

[0095] Referring to FIG. 8, in some embodiments, the installation shell 1111 may include a bottom shell 21 and a top cover 22, an installation chamber 210 of the floor brush may be arranged between the bottom shell 21 and the top cover 22 for placing the rolling brush 1113. The installation shell 1111 of the floor brush body 111 may be provided with a suction port 211 for inhaling garbage. The suction port 211 may be arranged at a front side of the bottom shell 21 and at a rear side of the rolling brush 1113. The installation chamber 210 of the floor brush may be provided with a first channel 23 in fluid communication with the suction port 211. During the cleaning process, the garbage on the surface to be cleaned may be rubbed by the rolling brush 1113 and sucked away through the suction port 211, and is continued to be guided through the first channel 23. An end of the first channel 23 away from the suction port 211 may be connected to the second channel 50 of the machine body 5, thereby conveying the garbage to the dirt storage tank 7 (shown in FIG. 4).

[0096] Due to the first channel 23 occupying a certain height in the brush installation chamber 210, a height of the cleaning liquid tank 112 located on the upper portion of the installation chamber 210 of the floor brush may be limited to avoid excessive height of the working portion 11. In some embodiments, a ratio of a maximum size f of the cleaning liquid tank 112 along the height direction of the cleaning liquid tank 112 to a maximum size c of the working portion 11 along the height direction of the working portion 1 may be 0.4-0.7.

[0097] Referring to FIGs. 8, 11A, 11B, and 12, in some embodiments, an upper portion of the top cover 22 may be provided with an accommodating slot 220, and the cleaning liquid tank 112 may be installed in the accommodating slot 220. In some embodiments, the cleaning liquid tank 112 may be detachably connected to the accommodating slot 220. In order to facilitate the placement of the cleaning liquid tank 112 in the accommodating slot 220, in some embodiments, a maximum size f of the cleaning liquid tank 112 along the height direction of the cleaning liquid tank 112 may be greater than a maximum size h of the accommodating slot along the height direction of the accommodating slot. Based on the structure of the accommodating slot 220, along the length direction of the floor brush, both sides of the top cover 22 may be constructed with convex edges 221, and at the same time, both sides of the cleaning liquid tank 112 may be constructed with slots 1125 that may accommodate the convex edges 221. Based on the above arrangement, the cleaning liquid tank 112 may exhibit a slightly long upper portion and a slightly short lower portion. The lower portion of the cleaning liquid tank 112 may be used for positioning and installation, and the slightly long upper portion may be conducive to expanding a capacity of the cleaning liquid tank 112.

[0098] In some embodiments, the slightly long upper portion of the cleaning liquid tank 112 may be provided with a convex portion 1126 along the length direction of the cleaning liquid tank 112 that protrude towards both sides of the cleaning liquid tank 112 relative to the slot 1125. The convex portion 1126 may form a step structure with the slot 1125, which is matched with the convex edges 221. In some embodiments, a bottom of the inlet 11202 of the cleaning liquid tank 112 may be higher than the step structure, that is, the inlet 11202 of the cleaning liquid tank 112 may be higher than a connection between the slot 1125 and the convex portion 1126. Further, the convex portion 1126 may include a chamber communicating with an interior of the cleaning liquid tank 112, i.e., the convex portion 1126 may be an internally hollow structure. When the cleaning liquid tank 112 is filled with the liquid solution, a space of the convex portion 1126 above the slot 1125 in the cleaning liquid tank 112 may store the cleaning liquid, thereby ensuring the capacity of the cleaning liquid tank 112. As shown in FIG. 11B, in some embodiments, the inlet 11202 of the cleaning liquid tank 112 may be higher than the step structure formed by the convex portion 1126 and the slot 1125, which can ensure that the interior of the convex portion 1126 can store the cleaning liquid, thereby increasing the storage space of the cleaning liquid tank 112. In some embodiments, a maximum size k of an internal space of the convex portion 1126 along the height direction of the convex portion 1126 may be 10-20 mm. For example, the maximum size k of the internal space of the convex portion 1126 along the height direction of the convex portion 1126 may be 14 mm. In some embodiments, a size l of the internal space of the convex portion 1126 along the length direction of the floor brush 1 may be 8-15 mm, for example, the size l of the internal space of the convex portion 1126 may be 11 mm.

[0099] If a size of the slot 1125 along the height direction of the slot 1125 is relatively small, a limiting property of the protrusion 221 on the slot 1125 may be poor, so that the cleaning liquid tank 112 may be prone to shaking. If the size of the slot 1125 along the height direction of the slot 1125 is too large, a spatial expansion of the cleaning liquid tank 112 located on an upper portion of the slot 1125 is limited, resulting in little significance for the spatial expansion in this form. In order to solve the above problem, in some embodiments, a ratio of a size j of the slot 1125 along the height direction of the slot 1125 to the maximum size f of the cleaning liquid tank 112 along the height direction of the cleaning liquid tank 112 may be 0.4-0.7.

[0100] If the convex edge 221 is relatively thin, the strength of the convex edge 221 is poor, the cleaning liquid tank 112 may be difficult to limit effectively; if the convex edge 221 is relatively thick, the size of the slot 1125 is increased, the capacity of the cleaning liquid tank 112 may be limited. Therefore, along the length direction of the floor brush 1, a size g of convex edge 221 may be 7-10 mm.

[0101] In some embodiments, the cleaning liquid tank 112 may be connected to the installation shell 1111 through a detachable connection such as a lock buckle structure, a buckle structure, bonding, or the like. However, the above-mentioned detachable connection structure may require a relatively large space and should be arranged in a prominent position. To address the above problem, in some embodiments, the cleaning liquid tank 112 may be fixed to the installation shell 1111 through a magnetic suction structure. Referring to FIGs. 8, 11A, and 13, in some embodiments, a first iron body 1124 may be fixed at the bottom of the cleaning liquid tank 112, and a first magnet 214 capable of generating suction with the first iron body 1124 may be fixed in the installation chamber 210 of the floor brush. In this way, a space occupation of the connection structure may be reduced, the connection structure may be hidden, so that a structure of the working portion 11 can be more compact and beautiful. The magnetic suction structure may also be achieved by exchanging positions of the first iron body 1124 and the first magnet 214 or setting the first iron body 1124 and the first magnet 214 into two magnets for magnetic attraction.

[0102] In some embodiments, the bottom of the cleaning liquid tank 112 may also be provided with a first liquid interpolation 1122 and a positioning block 1123. The first liquid interpolation 1122 may form a valve assembly with the first liquid socket 2201 located on the installation shell 1111. When the first liquid interpolation 1122 is plugged in the first liquid socket 1123, the cleaning liquid may flow out of the cleaning liquid tank 112. The positioning block 1123 may be inserted into a socket 2202 in the installation shell 1111 to play a positioning role. In addition, the valve assembly 1130 may also be other structures. As shown in FIG. 11C, in some embodiments, the valve assembly 1130 may be provided at an outlet of the cleaning liquid tank 112, and at least a portion of the valve assembly 1130 may extend into an interior of the cleaning liquid tank 112. In some embodiments, the valve assembly 1130 may include an assembly outlet 1132, a rod release inserting element 1134, and an inserting element spring 1138. In some embodiments, the assembly outlet 1132 may be an internal -through structure, that is to say, the assembly outlet 1132 may include an internal channel. The assembly outlet 1132 may be installed at an outlet of the cleaning liquid tank 112 through a threaded cap 1133. The rod release inserting element 1134 may be connected to the assembly outlet 1132 through a pad (e.g., an O-ring, which not shown in the figure). The rod release inserting element 1134 may control an opening and closing status of the internal channel of the assembly outlet 1132, that is, by changing a position of the rod release inserting element 1134, the opening and closing status of the internal channel of the assembly outlet 1132 may be changed. For example, in some embodiments, the rod release inserting element 1134 may be a cylindrical structure, and the rod release inserting element 1134 may at least include a first cylindrical structure and a second cylindrical structure connected sequentially from top to bottom. A radius of the first cylindrical structure may be greater than a radius of the second cylindrical structure, and the radius of the first cylindrical structure may be approximately the same as an inner diameter of the assembly outlet 1132. A radius of the second cylindrical structure may be smaller than the inner diameter of the assembly outlet 1132. The inserting element spring 1138 may bias the valve assembly 1130 to a closing position inside a spring shell 1136. Specifically, under an action of the inserting element spring 1138, the first cylindrical structure of the rod release inserting element 1134 may be internally connected to the assembly outlet 1132, at this time, the valve assembly 1130 may be closed, and the cleaning liquid in the cleaning liquid tank 112 may not flow out from the cleaning liquid tank 112 to the external environment. When the valve assembly 1130 is connected to the cleaning liquid supply assembly, the rod release inserting element 1134 may deform the inserting element spring 1138 under a pressure of a pipeline interface, and the first cylindrical structure of the rod release insert element 1134 may move relative to an internal channel of the assembly outlet 1132. At this point, the second cylindrical structure may be located at the internal channel of assembly outlet 1132, and a gap may exist between the second cylindrical structure and a side wall corresponding to the internal channel of assembly outlet 1132. The valve assembly 1130 may be in an opening state to release the fluid into a fluid delivery channel (e.g., a first pipeline, a second pipeline, and a third pipeline). In some embodiments, the rod release inserting element 1134 may be a structure of the different diameter, that is, a radius of the rod release inserting element 1134 may gradually increase from top to bottom. The principle that the rod release inserting element 1134 is a structure of the different diameters and the rod release inserting element 1134 matches the assembly outlet 1132 may be referred to the above descriptions. In some embodiments, the valve assembly 1130 may also include a sieve network plug-in element (not shown in the figure) to prevent particulate matter from entering the cleaning liquid supply assembly. In some embodiments, the sieve network plug-in element may be located between an outlet of the cleaning liquid tank and the valve assembly 1130. In some embodiments, the sieve network plug-in element may also be located on a side of the outlet of the cleaning liquid tank 112 away from the valve assembly 1130.

[0103] In order to ensure that the cleaning liquid from the nozzle 1120 can wet the ground, in some embodiments, an outlet area of the valve assembly may be greater than 3 mm². Preferably, the outlet area of the valve assembly may be greater than 4 mm². More preferably, the outlet area of the valve assembly may be greater than 5 mm². More preferably, the outlet area of the valve assembly may be greater than 6 mm². In some embodiments, an inner diameter of the rod release inserting element 1134 or the assembly outlet 1132 may be adjusted to ensure water yield output by the valve assembly. For example, by reducing a radius of the second cylindrical structure of the rod release inserting element 1134, an outlet area of the valve assembly may be increased. In some embodiments, along a height direction of the cleaning liquid tank 112 (e.g., the H direction shown in FIG. 11C), a distance between the rod release inserting element 1134 and the cleaning liquid tank 112 may be less than an interval d1 between an end of the threaded cap 1133 away from the cleaning liquid tank 112 and the cleaning liquid tank 112. Such an arrangement can, on the one hand, prevent the rod release inserting element 1134 from colliding with an external object and causing water leakage, on the other hand, facilitate the staff to inspect the valve assembly 1130 by pressing the rod release inserting element 1134 to observe whether the valve assembly 1130 is normal. In some embodiments, the interval d1 may be 0.2 mm-0.8 mm. Preferably, the interval d1 may be 0.3 mm-0.6 mm. More preferably, the interval d1 may be 0.4 mm-0.5 mm.

[0104] It should be noted that the valve assembly is not limited to the valve assembly composed of the first liquid nozzle 1122 and the positioning block 1123 and the valve assembly 1130 shown in FIG. 11C, and the valve assembly 1130 may be any component that achieves a liquid conduction/interception through plugging and unplugging actions, which may not be limited herein. In addition, a shape of the rod release inserting element 1134 may also be other shapes, such as a rectangular structure, a trapezoidal structure, a circular platform structure, or the like. Accordingly, a shape of an internal channel of the assembly outlet 1132 may match with the shape of the rod release inserting element 1134.

[0105] It should be noted that the maximum sizes of the cleaning liquid tank 112 along its height direction, weight direction, and length direction refers to sizes of the cleaning liquid tank 112 (e.g., the height, the width, and the length), which do not include the sizes of the protrusions such as the first liquid nozzle 1122 and the positioning block 1123.

[0106] Referring to FIG. 8, the cleaning liquid supply assembly may also include a nozzle 1120 and a pump 1121, and the pump 1121 may be configured to pump out the cleaning liquid from the cleaning liquid tank 112 to the nozzle 1120. The nozzle 1120 may serve as an output end of the cleaning liquid supply assembly, and spray the cleaning liquid onto the surface to be cleaned, thereby playing a role in cleaning and/or caring for the ground. Specifically, the pump 1121 may be arranged in the installation chamber 210 of the floor brush, which may be arranged on a side of the first channel 23 along the length direction of the floor brush 1, and the nozzle 1120 may be arranged on the upper cover 1112.

[0107] Referring to FIG. 12, in order to avoid an inappropriate reduction in the capacity of the cleaning liquid tank 112, in some embodiments, a top end of the pump 1121 may be higher than a lowest surface in the accommodating slot 220, i.e., a first protrusion 2203 may be provided on a bottom surface of the accommodating slot 220 and configured to at least partially accommodate the pump 1121. Referring to FIGs. 8 and 11A, accordingly, a bottom of the cleaning liquid tank 112 may be provided with a first recess (not shown in the figure) for avoiding the first protrusion 2203. In some embodiments, a top of the first channel 23 may be higher than the lowest surface in the accommodating slot 220, i.e., the bottom surface of the accommodating slot 220 may be constructed with a second protrusion 2204 that may at least partially accommodate the first channel 23. Accordingly, in some embodiments, the bottom of the cleaning liquid tank 112 may be provided with a second recess (not shown in the figure) for avoiding the second protrusion 2204. It should be understood that in order to ensure a pumping capacity of the cleaning liquid and the conveying capacity of the garbage, the pump 1121 and the first channel 23 may reach a certain height respectively. If the bottom surface of the accommodating slot 220 is basically constructed as a plane, a height of the plane may depend on whichever is higher between the top of the pump 1121 and the top of the first channel 23. In this case, some space that can be used to expand the capacity of the cleaning liquid tank 112 is undoubtedly sacrificed. Based on the above arrangement, the cleaning liquid tank 112 and the floor brush body 111 may be limited from a height perspective, which can ensure that the cleaning liquid tank 112 has sufficient capacity and make the structure of the working portion 11 more compact and practical, resulting in facilitating the user to use the floor brush in highly restricted spaces such as the bed bottom. It should be noted that the lowest surface inside the accommodating slot 220 refers to an essentially flat inner bottom in the accommodating slot 220 that is connected to the first protrusion 2203 and the second protrusion 2204.

[0108] In some embodiments, as shown in FIG. 8, the installation shell 1111 may be provided with a second liquid interpolation 11211, and the upper cover 1112 may be provided with a second liquid socket 11121 that may form a valve assembly with the second liquid interpolation 11211. Specifically, the pump 1121 may include a pump inlet and a pump outlet. A fluid conduction may be achieved between the pump inlet and the first liquid socket through a first conduit, a fluid conduction may be achieved between the pump outlet and the second liquid interpolation 11211 through a second conduit, and a fluid conduction may be achieved between the second liquid interpolation 11121 and the nozzle 1120 through a third conduit 11122. The first conduit and the second conduit may be configured in the installation chamber 210 of the floor brush, the third conduit 11122 may be configured in the upper cover 1112, and the nozzle 1120 may be located at the upper cover 1112 above the rolling brush 1113. When the surface to be cleaned needs to be wetted, under the power of the pump 1121, the cleaning liquid may flow out to the external environment through a valve assembly composed of the first liquid interpolation 1122 and the first liquid socket 2201 (as shown in Figure 12), the first conduit, the pump 1121, the second conduit, the second liquid interpolation 11211, and a valve assembly composed of second liquid interpolation 11211 and the second liquid socket 11121, the third conduit 11122, and the nozzle 1120 sequentially, to wet the surface to be cleaned in front of the roller brush 1113. In some embodiments, a count of nozzles 1120 may be one or more. When the count of nozzles 1120 is multiple, the nozzles 1120 may distribute at intervals along a length direction (a direction same as a length direction n of the rolling brush 1113) of the upper cover 1112 to increase a wetting area of the nozzles 1120. By configuring the two valve assemblies and three conduits, an effective flow guidance can be achieved between the multiple assemblies of the cleaning liquid supply assembly, and the multiple assemblies of the cleaning liquid supply assembly can be disassembled separately.

[0109] During the cleaning operation, the rolling brush 1113 may rotate under a transmission of the first motor 311. In some embodiments, the first motor 311 may be arranged in the installation chamber 210 of the floor brush, and the first motor 311 may be configured on the other side of the first channel 23 along a length direction of the floor brush. In some embodiments, the first motor 311 may be installed within the rolling brush 1113, which may further optimize the size of the working portion 11 and improve the compactness of the working portion 11.

[0110] In the embodiments in which the first motor 311 is arranged inside the rolling brush 1113, a first rolling brush support part is fixed with a side of a bottom shell 21 and is configured to fix the first motor 311. A supporting arm 212 may be configured as a first rolling brush support part, which may extend along a width direction of the floor brush and in a direction away from the connecting portion 12. One end of the first motor 311 may be fixed to the supporting arm 212 through a connecting sleeve 215, and the other end of the first motor 311 may be connected to a gearbox 312, and the gearbox 312 may act on the rolling brush 1113 directly to drive the rotation of the rolling brush.

[0111] Referring to FIG. 13 and FIG. 14, in some embodiments, the rolling brush 1113 may include a brush cylinder 32 and bristles 33 fixed on an outer circumference of the brush cylinder 32, and a partition 322 is fixed inside the brush cylinder 32 and perpendicular to the length direction of the brush cylinder 32. The multiple connecting slots 3220 may be evenly distributed on the partition 322, and an output shaft of the gearbox 312 may be constructed with multiple connecting columns 3121 that may be embedded in the connecting slots 3220. When the first motor 311 is started, the connecting columns 3121 may apply forces to the connecting slots 3220 to drive the rotation of the rolling brush 1113.

[0112] In some embodiments, the connecting column 3121 may extend outward along the radial direction of the output shaft of the gearbox. The more the connecting columns 3121, the better the transmission stability of the rolling brush 1113 and gearbox 312. In some embodiments, the counts of connecting columns 3121 and connecting slots 3220 may both be three. It should be noted that the counts of connecting columns 3121 and connecting slots 3220 may not be limited to three, but may also be one, two, or more. The specific count may be adjusted according to the actual situation.

[0113] After the cleaning, the rolling brush 1113 needs to be disassembled separately for cleaning. As the first motor 311 and the gearbox 312 are arranged inside the brush cylinder 32, the rolling brush 1113 may only be pulled out along its length direction relative to the bottom shell 21. However, when the rolling brush 1113 is reinstalled, there may be an issue of difficult alignment between the connecting columns 3121 and the connecting slots 3220, resulting in a poor user experience. To solve the issue, in some embodiments, the connecting columns 3121 may be basically cylindrical, and at the same time, an outer edge of the connecting slots 3220 may be formed with rounded corners or chamfers 3221. Based on the above structure, during an insertion of the rolling brush 1113, the basically cylindrical connecting columns 3121 may smoothly insert into the connecting slots 3220 along the rounded corners or chamfers.

[0114] Referring to FIG. 13 and FIG. 15, in some embodiments, a side of the bottom shell 21 away from the supporting arm 212 may be detachably arranged with a second rolling brush support portion, and the second rolling brush support portion may be used for rotating support and end limiting of the rolling brush 1113. In some embodiments, a support assembly 4 may be used as the second rolling brush support portion.

[0115] Referring to FIGs. 13, 16, and 17, in some embodiments, the support assembly 4 may include a cover plate element 41, and the cover plate element may be fixed to the installation shell 1111 through a magnetic suction structure. Specifically, a second iron 413 may be arranged on one side of the cover plate element 41 facing the bottom shell 21, the bottom shell 21 may be provided with a side plate 213, and the side plate may be provided with a second magnet (not shown in the figured). In this way, a connection structure of the support assembly 4 can be hidden, which is beneficial for controlling the maximum size of the working portion 11 along its length direction. In some embodiments, the magnetic fixation of the support assembly 4 can be achieved by exchanging the second iron 413 and the second magnet or providing two magnets.

[0116] Fixing the support assembly 4 through the magnetic suction structure is conducive to controlling the sizes of the cover plate element 41 and the bottom shell 21 in their length directions, so that a length ratio of the rolling brush 1113 in the working portion 11 is optimized. In some embodiments, a ratio of the maximum size a of the rolling brush 1113 along its length direction to the maximum size a of the working portion along its length direction may not be less than 0.9. In this way, during a single push pull cleaning, the rolling brush 1113 may wipe as much of the surface to be cleaned as possible, making a wiping length (i.e., the maximum size of the rolling brush along its length direction) almost the same as the maximum size of the working portion along its length direction, thereby improving the cleaning effect and cleaning efficiency.

[0117] In order to strengthen a connecting relationship between the cover plate element 41 and the side plate 213 and avoid the rotation of the support assembly 4 relative to the side plate 213, a portion of the cover plate element 41 may be limited to be embedded in the side plate 213. In addition, to ensure that the cover plate element 41 is installed in place, a limiting slot 414 may be arranged on a side of the cover plate element 41 facing the bottom shell 21, and the side plate 213 is provided with a limiting block 2131 that may be mated and inserted into the limiting slot 414.

[0118] In some embodiments, a supporting sleeve 42 may be fixed on one side of the cover plate element 41 facing the bottom shell 21, and a first bearing element 43 may be installed inside the supporting sleeve 42 through a circlip 431. A connecting rod 44 may be fixedly inserted in an inner ring of the first bearing element 43, and an end of the connecting rod 44 away from the first bearing element 43 may be inserted into a rotating sleeve 45 with interference.

[0119] In some embodiments, a second bearing element 2150 may be installed on the connecting sleeve 215. In the use state, the brush cylinder 32 may be sleeved on the rotating sleeve 45 and the second bearing element 2150. The rotating sleeve 45 and the second bearing element 2150 may support right and left sides of the rolling brush 1113, respectively. Under the action of two bearing elements, a rotational resistance of rolling brush 1113 can be reduced.

[0120] Referring to FIG. 16 and FIG. 17, in order to prevent friction caused by inconsistent rotational speeds between the rolling brush 1113 and the rotating sleeve 45, in some embodiments, a flange 451 may be provided on the rotating sleeve 45, and several notches 450 may be provided on the flange 451. Accordingly, the brush cylinder 32 may be provided with several inserting blocks 321 corresponding to the notches. In the use state, the inserting blocks 321 may be correspondingly inserted into the notches 450, ensuring complete synchronization between the rolling brush 1113 and the rotating sleeve 45 during circumferential rotation. In some embodiments, a size of the flange 451 along its height direction may not be less than a thickness of the brush cylinder 32, which is equivalent to blocking one end of the brush cylinder 32 through the rotating sleeve 45, thereby preventing the garbage from entering the brush cylinder 32. The rotating sleeve 45 may be provided with a ring slot along its circumference, and a sealing ring 46 may be arranged in the ring groove and abut against an inner wall of the brush cylinder 32, further enhancing the blocking effect on garbage.

[0121] In some embodiments, a side of the cover plate element 41 facing away from the bottom shell 21 may be provided with a concave portion 410, and a pulling block 411 may be arranged in the concave portion 410. The user may manually pinch the pulling block 411 to disassemble the support assembly 4. In some embodiments, the pulling block 411 may be arranged in the concave portion 410 completely, so that the pulling block 411 do not protrude from a plane of the cover plate element 41 facing away from the bottom shell 21, thereby not affecting a maximum length of the working portion 11 and not easily hitting obstacles.

[0122] In some embodiments, the pulling block 411 and the supporting sleeve 42 may be connected together through bolts, screws, or the like, this design facilitates disassembly and facilitates subsequent parts cleaning and maintenance. In some embodiments, the cover plate element 41 may also be provided with a limiting sleeve 412, and the supporting sleeve 42 may be inserted into the limiting sleeve 412 with interference. This structure can improve the installation stability of the supporting sleeve 42 and prevent the shaking of the supporting sleeve 42 relative to the cover plate element 41, thereby ensuring the rotational balance performance of the rolling brush 1113.

[0123] The rotating sleeve 45 can rotate relative to the cover plate element 41, so there needs to be a gap between the rotating sleeve 45 and the cover plate element 41. During the cleaning process, it may be inevitable that hair, filaments, and other filamentous substances may enter the rotating sleeve 45 through the gap. In order to prevent filamentous substances from winding around rotating elements such as the first bearing element 43 and the connecting rod 44, in some embodiments, a side of the supporting sleeve 42 facing the rotating sleeve 45 may be provided with an expanding portion 421, and the expanding portion 421 may surround the rotating elements such as the first bearing element 43 and the connecting rod 44, so that the passage between the rotating elements and the external environment becomes tortuous, thereby preventing the above-mentioned filamentous substances from contacting these rotating elements, at the same time, the expanding portion 421 may not hinder the rotation of these rotating elements. In some embodiments, along a height direction m of the rolling brush 1113 (as shown in FIG. 8), a minimum distance between the expanding portion 421 and the rotating sleeve 45 may be not greater than 1.5mm; along a length direction n of the rolling brush 1113 (as shown in FIG. 8), a minimum distance between the expanding portion 421 and the rotating sleeve 45 may not exceed 1.5mm. In this case, such a small distance further makes it almost impossible for the filamentous substances to reach the rotating elements. The supporting sleeve 42 and the rotating sleeve 45 may be basically coaxial, so that the above-mentioned two minimum distances between the expanding portion 421 and the rotating sleeve 45 may be a minimum distance between an outer edge of the expanding portion 421 and an inner wall of the rotating sleeve 45 and a minimum distance between a right end of the expanding portion 421 and the other inner wall of the rotating sleeve 45, respectively.

[0124] When the cleaning device is in use, the cleaning liquid tank 112 may spray the cleaning liquid onto the surface to be cleaned. The sewage may enter the dirt storage tank 7 through the first channel 23 from a suction port 711 of the floor brush 1. The dirt storage tank 7 may handle the garbage that enters the interior of the dirt storage tank 7. The following may further describe the dirt storage tank 7 combining with FIG. 18- FIG. 28.

[0125] FIG. 18 is a schematic diagram illustrating an exemplary internal structure of a dirt storage tank 7 according to some embodiments of the present disclosure. FIG. 19 is a schematic diagram illustrating an exemplary overall structure of a dirt storage tank according to some embodiments of the present disclosure. As shown in FIG. 18 and FIG. 19, the dirt storage tank 7 may include a tank body 701, and a channel 702 may be provided inside the tank body 701, and the channel 702 may be located between the handheld dust collection device 6 (shown in FIG. 1) and the dirt storage tank 7. The channel 702 may be arranged along a length direction I of the dirt storage tank 7, and the channel 702 may be connected to a second channel 50 (shown in FIG. 1), so that fluid waste in the floor brush 1 (shown in FIG. 1) may enter the dirt storage tank 7 under the action of the handheld dust collection device 6. In some embodiments, the channel 702 may be an internal channel of a tubular structure or an internal channel of the tank body 701. More descriptions of the channel may be found elsewhere in the present disclosure. In some embodiments, a partition 703 may be arranged inside the tank body 701, and the partition 703 may be arranged in a direction that is perpendicular or approximately perpendicular to along the length direction I of the dirt storage tank 7. The partition 703 may divide an internal space of the tank body 701 into an upper space 704 and a lower space 705. The upper space 704 may be close to the handheld dust collection device 6, and the lower space 705 may be close to the floor brush 1. The channel 702 may extend upwards from the lower space 705 through the partition 703 to the upper space 704. The partition 703 may be provided with a first hole group 1001 and an anti-backflow structure 100. The anti-backflow structure 100 may be configured to allow the sewage in the upper space 704 to enter the lower space 7205 from the first hole group 1001, and prevent the sewage in the lower space 705 from entering the upper space 704 from the first hole group 1001. Further, the sewage entering the upper space 704 of the tank body 701 from the channel 702 may enter the lower space 705 for storage at least through the first hole group 1001 and the anti-backflow structure 100, and the anti-backflow structure 100 can prevent the sewage in the lower space 705 from flowing through the anti-backflow structure 100 and entering the upper space 704.

[0126] In some embodiments, as shown in FIG. 18, the channel 702 and the tank body 701 may be an integrated structure, for example, the integrated structure may be formed by injection molding, making manufacturing simple and convenient. In some embodiments, the channel 702 and the tank body 701 may also be of separate structures, so that the channel 702 may be removed from the tank body 701 when needed, and the channel 702 or tank body 701 can be thoroughly cleaned. In some embodiments, when the channel 702 and the tank body 701 are of separate structures, the channel 702 and the tank body 701 may be threaded or sealed together.

[0127] Referring to FIG. 1, FIG. 18, and FIG. 19, when the rod 51 (or the dirt storage tank 7) is basically upright (e.g., when an angle relative to the horizontal plane is 90 degrees or greater than or equal to 60 degrees, it is hereinafter referred to as "basically upright"), the sewage may be sucked into the channel 702, flow into the upper space 704 from the channel 702, enter the lower space 705 through the anti-reflux structure 100 and the first hole group 1001, and stored in the lower space 705. In some embodiments, when the rod 51 (or the dirt storage tank 7) is significantly tilted (e.g., the angle relative to the horizontal plane is less than or equal to 30 degrees, or even about 2 degrees, it is hereinafter referred to as "significantly tilted" or "flattening"), the anti-backflow structure 100 may prevent the sewage in the lower space 705 from flowing back through the first hole group 1001 and entering the upper space 704, which can ensure that the sewage does not flow to the motor (e.g., a power assembly of the handheld dust collection device 6 shown in FIG. 1, or the second motor shown in FIG. 27 or FIG. 28), and the cleaning device may still perform the cleaning work normally. The cleaning device with the dirt storage tank 7 can not only upright the rod 51 for use, but also tilt the rod 51 significantly or even lay the rod 51 flat for use, which can greatly facilitate the user's use. It should be noted that when the cleaning device includes a handheld dust collection device (e.g., the handheld dust collection device 6 shown in FIG. 1), the second motor 727 may not be arranged, and the power assembly of the handheld dust collection device 6 can provide power for fluid movement. As shown in FIG. 1, in some embodiments, the dirt storage tank 7 may be arranged at any position in a circumferential direction of the rod 51. For example, the dirt storage tank 7 may be arranged on a front or rear side of the rod 51. The front side of the rod 51 refers to a direction in which most of the structure of the floor brush 1 protrude from the rod 51 when an angle between the rod 51 and the floor brush 1 is approximately 90°, and a rear side may be a direction opposite to the front side.

[0128] In some embodiments, in the dirt storage tank 7 shown in FIG. 18 and FIG. 19, a cover 716 may be provided at an opening for dumping the sewage at a top of the tank body 701, and a gas outflow channel 718 may be provided on the cover 716. An inlet 719 of the gas outflow channel 718 may be connected to the upper space 704. The second motor 727 may be connected to the outlet 721 of the gas outflow channel 718 to extract air from the tank body 701, so that the sewage is sucked into the tank body 701 through the channel 702. In some embodiments, a filter element (not shown in the figure) can be installed at the outlet 721 of the gas outflow channel 718. The filter element may be configured to filter out small solid waste in the gas, which can prevent garbage blockage at the second motor 727 and improve the filtering effect. In some embodiments, the filter element may be one or more of Hypa, a filter screen, or a filter paper, to improve the filtering effect.

[0129] In some embodiments, a cyclone separation structure 725 (also known as a cyclone separator) may be provided within the gas outflow channel 718. When the gas flows through the cyclone separation structure 725, the cyclone separation structure 725 may separate some of the solid waste carried by the gas, and the remaining solid waste may be filtered out by the filter element. The cyclone separation structure 725 may be integrally formed with the cover 716 to facilitate cleaning thereof. By arranging the cyclone separation structure 725, the working load of the filter element can be reduced, the working life of the filter element can be improved, and the frequency of maintenance or replacement of the filter element can be reduced, thereby making it convenient for the user to use the cleaning device.

[0130] FIG. 20 is a schematic diagram illustrating an exemplary structure of a partition according to some embodiments of the present disclosure. As shown in FIG. 20, the partition 703 may be provided with a first hole group 1001. The anti-backflow structure 100 may include a check valve 1002 corresponding to the first hole group 1001 and arranged on the partition 703. The check valve 1002 may be located in the lower space 705 and may communicate with the upper space 704 through the first hole group 1001. In some embodiments, a first portion 706 of an edge of the partition 703 may be in sealed contact with a side wall of the tank body 701. In some embodiments, a sealing ring may be arranged between the edge of the partition 703 and the side wall of the tank body 701 to achieve a sealing contact between the partition 703 and the tank body 701. When the rod 51 is flattened, the check valve 1002 may prevent the sewage in the lower space 705 from flowing through the check valve 1002 and entering the upper space 704. In addition, when the partition 703 is removed from the tank body 701, the first hole group 1001 may filter out the solid waste in the sewage, that is, the sewage may be stored in the tank body 701, and the solid waste may be carried on the partition 703 to achieve a separation of the solid waste and the sewage. In some embodiments, the solid waste may be separately poured into a garbage basket, and the sewage is poured into discharge devices such as toilets or sinks, which can effectively prevent blockage of discharge devices such as toilets or sinks. In addition, the partition 703 with the first hole group 1001 and the check valve 1002 has a simple structure, a simple manufacturing process, and a low cost, and is easy to use in the cleaning device.

[0131] In some embodiments, the first hole group 1001 may include one or more first through holes. In some embodiments, in order to improve the efficiency of the sewage flowing from the upper space 704 to the lower space 705, a count of the first through holes in the first hole group 1001 may be 50-200. In some embodiments, in order to ensure the structural strength of the partition 703, the count of the first through holes in the first hole group 1001 may be 70-150. In some embodiments, the count of the first through holes in the first hole group 1001 may be 80-120.

[0132] In some embodiments, each first through hole may be a through hole with a regular or irregular shape, such as a strip hole, a circular hole, or the like. Preferably, the first through hole may be the strip hole, and the strip hole has a larger length-to-width ratio, which can ensure the efficiency of the sewage passing through a first hole group 1001 and effectively prevent the solid waste from passing through the first through hole, thereby making the partition 703 have a good filtering effect. In some embodiments, when the first through hole is the strip hole, in order to ensure that the partition 703 has good filtering effect, and the solid waste does not pass through the first hole group 1001, a length-to-width ratio of the strip hole may be 0.5-2. In some embodiments, the length-to-width ratio of the strip hole may be 0.7-1.5. In some embodiments, the length-to-width ratio of the strip hole may be 0.8-1.2.

[0133] In some embodiments, an area of the first through hole in the first hole group 1001 may be 80 mm² - 100 mm², which can not only improve the efficiency of the sewage passing through the first hole group 1001, but can also effectively block the solid waste and play a good filtering role. In some embodiments, the area of the first through hole in the first hole group 1001 may be 90 mm²- 100 mm². In some embodiments, the area of the first through hole in the first hole group 1001 may be 98 mm², which can better improve the efficiency of the sewage passing through the first hole group 1001 and block the solid waste.

[0134] As the first hole group 1001 is located on the partition 703, an area ratio of the first hole group 1001 on the partition 703 (i.e., a ratio of a total area of the first through hole in the first hole group 1001 to an area of the partition 703) may be related to a structural strength of the partition 703. In order to ensure that the partition 703 has good structural strength and the sewage can pass through the first hole group 1001 with high efficiency, in some embodiments, the area ratio of the first hole group 1001 on the partition 703 may be 0.1- 0.5. In some embodiments, the area ratio of the first hole group 1001 on the partition 703 may be 0.1- 0.4. In some embodiments, the area ratio of the first hole group 1001 on the partition 703 may be 0.2- 0.3.

[0135] In order to remove the partition 703 from the tank body 701 conveniently, in some embodiments, the partition 703 may be detachably arranged inside the tank body 701. As shown in FIG. 20, in some embodiments, a handle 707 may be provided on the partition 703, and the handle 707 may extend towards an opening of the tank body 701. When cleaning the dirt storage tank 7, the handle 707 may be lifted up to lift the partition 703 out of the tank body 701, or the solid waste may be removed from the tank body 701, achieving a separation of the solid waste and the sewage. In some embodiments, the partition 703 may also be connected to the cover 716 directly. When the cover 716 is removed, the partition 703 may be removed to prevent a remixing of the sewage and the solid waste caused by forgetting to remove the partition 703 when pouring the sewage.

[0136] In some embodiments, the partition 703 may include an arc panel. In some embodiments, the partition 703 may be an arc panel protruding towards the lower space 705, and the first hole group 1001 may deviate from a lowest point of the partition 703. The lowest point of the partition 703 refers to a position on the upper surface or lower surface of the partition 703 with a smallest distance from the floor brush 1. The deviation of the first hole group 1001 from the lowest point of the partition 703 may be understood to mean that there is an interval between a position of the first hole group 1001 and the lowest point of the partition 703 in a radial direction of the partition 703. By arranging the partition 703 as a protruding arc panel, the solid waste may be concentrated at the lowest point of the partition 703, which can reduce the probability of the first hole group 1001 being blocked by the solid waste and facilitate the use of cleaning device by the user.

[0137] As shown in FIG. 20, in some embodiments, a second hole group 710 may be provided on the partition 703, and the second hole group 710 may freely connect the upper space 704 and the lower space 705. During use, the sewage may flow into the lower space 705 through the first hole group 1001, and the air in the lower space 705 may flow into the upper space 704 through the second hole group 710 and further be extracted by the second motor 727, thereby increasing a pressure difference between the upper space 704 and the lower space 705, so that the sewage can flow into the lower space 705 smoothly. In some embodiments, a portion of the sewage in the upper space 704 may flow into the lower space 705 from the second hole group 710. Therefore, the second pore group 710 may also play a role in filtering the solid waste in the sewage.

[0138] In some embodiments, the second hole group 710 and the first hole group 1001 may deviate along a circumferential direction of the partition 703. In some embodiments, the deviation between the second hole group 710 and the first hole group 710 along the circumferential direction of the partition 703 may be understood to mean that there is an interval between the second hole group 710 and the first hole group 1001 along the circumferential direction of the partition 703. The circumferential direction of the partition 703 refers to a direction along an edge of the partition 703. When the cleaning device is flat for use, the check valve 1002 may be closed, and the sewage in the lower space 705 may not flow out through the second hole group 710. In some embodiments, the first hole group 1001 and the second hole group 710 may be radially opposite. In some embodiments, the radial opposition between the first hole group 1001 and the second hole group 710 may be understood to mean that positions of the first hole group 1001 and the second hole group 710 on the radial direction of the partition 703 are centrally symmetrical with respect to a geometric center of the partition 203, which can ensure that the interval between the first hole group 1001 and the second hole group 710 in the circumferential direction of the partition 703 is relatively large. Even if there is a large amount of sewage in the lower space 705, a water level of the sewage may not be higher than the second hole group 710, thereby ensuring that the sewage in the lower space 705 can not flow into the upper space 704 through the second hole group 710, and facilitating the use of the cleaning device for the user. In some embodiments, the second hole group 710 may include one or more second through holes. In order to improve the efficiency of the sewage passing through the second pore group 710, while effectively blocking the solid waste and playing a good filtering role, in some embodiments, an area of the second through hole in the second hole group 710 may be 350 mm²- 400 mm². In some embodiments, the area of the second through hole in the second hole group 710 may be 360 mm²- 390 mm². In some embodiments, the area of the second through hole in the second hole group 710 may be 370 mm²- 380 mm². In some embodiments, the area of the second through hole in the second hole group 710 may be 376 mm², which can improve the efficiency of the sewage passing through the second hole group 710 and block the solid waste better.

[0139] In order to ensure that the partition 703 has good structural strength and that the sewage passes through the second hole group 710 with high efficiency, in some embodiments, an area ratio of the second hole group 710 on the partition 703 (i.e., a ratio between a total area of the second through hole in the second hole group 710 and an area of the partition 703) may be 0.01- 0.2. In some embodiments, the area ratio of the second hole group 710 on the partition 703 may be 0.02- 0.1. In some embodiments, the area ratio of the second hole group 710 on the partition 703 may be 0.05- 0.08.

[0140] In some embodiments, the second through hole in the second hole group 710 and the first through hole in the first hole group 1001 have a same or different shape and/or a same or different quantity. In some embodiments, more description of the count or the shape of the second through hole in the second hole group 710 may be found in related descriptions of the count or the shape of the first through hole in the first hole group 731, which may not be limited herein.

[0141] In some embodiments, in order to prevent the sewage from flowing out of the lower space 705 when the cleaning device is used at an angle, only the second hole group 710 may be provided on the partition 703 without the first hole group, as long as the cleaning device may be arranged not to be inclined toward a direction of the second hole group 710. For example, when the second hole group 710 is arranged on the partition 703 near a front side of the tank body 701, the cleaning device may be tilted to the rear side be tilted to the rear side during use. In some embodiments, when the partition 703 is arranged as an arc panel, the second hole group 710 may deviate from the lowest point of the partition 703, which can reduce the probability of the second hole group 710 being blocked by the solid waste and facilitate the use of the cleaning device for the user.

[0142] As shown in FIG. 20, a retaining wall 711 may be vertically arranged along the circumference of the partition 703, and the retaining wall 711 may extend at least into the upper space 704. In some embodiments, when the partition 703 is lifted from the tank body 701, the retaining wall 711 can prevent the solid waste from falling into the tank body 701. In some embodiments, one or more drainage holes may be arranged on the retaining wall 711, which can not only prevent the solid waste from falling, but can also allow the sewage to be discharged as much as possible into the tank body 701, thus improving the separation effect between the solid waste and the sewage. In some embodiments, a bracket 712 may be vertically arranged along the circumference of the partition 703, and a filter screen 713 may be arranged on the bracket 712 to form a retaining wall 711 with the drainage holes.

[0143] In some embodiments, when the retaining wall 711 is configured, the handle 707 may be connected to the retaining wall 711 or integrally formed with the retaining wall 711 (e.g., the handle 707 may be a part of the bracket 712 extending upwards).

[0144] As shown in FIG. 18 and FIG. 20, in some embodiments, a fitting hole 714 may also be provided on the partition 703. The fitting hole 714 may deviate from the first hole group 1001 and the second hole group 710. The channel 702 may be constructed as a sewage pipe and extend upwards from the lower space 705 through the fitting hole 714 to the upper space 704 to facilitate the assembly of the partition 703 into the tank body 701. In some embodiments, the fitting hole 714 may be in sealed contact with the channel 702 (e.g., by arranging a sealing ring), so that when the cleaning device is laid flat, the sewage may not flow out from the lower space 705.

[0145] In some embodiments, a sewage opening of the channel 702 may be arranged on a side wall of the tank body 701 and connected to the upper space 704. The sewage opening may be understood as an opening where the sewage enters the tank body 701 (e.g., the upper space 704) along the channel 702. In some embodiments, a top of the tank body 701 may be provided with a top wall, a dumping opening may be opened on the top wall, the cover 716 may cover the dumping opening, in addition, the sewage opening of the channel 702 may be opened on the top wall of the tank body 701 and connected to the upper space 704.

[0146] In some embodiments, an annular baffle 715 may be provided along a side of the fitting hole 714, and the annular baffle 715 may extend into the upper space 704, and the channel 702 may extend through the annular baffle 715. When tilting or flatting the cleaning device, the partition 703 (along with the retaining wall 711) may not tilt inside the tank body 701, and the anti-backflow structure 100 on the partition 703 may still remain in an original position, which can prevent that the sewage flows out of the lower space 705 through the anti-backflow structure 100.

[0147] FIG. 21 is a schematic diagram illustrating an exemplary structure of a check valve according to some embodiments of the present disclosure. As shown in FIG. 18 and FIG. 21, the check valve 1002 may include a joint 1003 and a flexible valve body 1004. The joint 1003 may be arranged at an inlet of the valve body 1004. In some embodiments, a size of a cross-section of an outlet of the valve body 1004 along the second direction may be larger than a size of the cross-section of the outlet of the valve body 1004 along the third direction. That is to say, the valve body 1004 may be a flat mouth valve body. For example, a cross-section of the outlet of the valve body 1004 may be rectangular, the size of the valve body 1004 along the second direction refers to a length of the rectangle, and the size of the valve body 1004 along the third direction refers to a width of the rectangle. In some embodiments, the joint 1003 and the valve body 1004 may be an integrated structure formed through injection molding, 3D printing, and other integrated molding manners, or a split structure. The joint 1003 and the valve body 1004 may be assembled through bonding, clamping, and other connection manners to form the check valve 1002. In some embodiments, the joint 1003 may be installed on the partition 703 corresponding to the first hole group 1001. In order to facilitate the installation of the check valve 1002, in some embodiments, a conduit 708 may be provided on a lower surface of the partition 703 corresponding to the first hole group 1001, and the joint 1003 may be connected to the conduit 708. In some embodiments, the joint 1003 may be in an elastic structure to conveniently sleeve onto the conduit 708. In some embodiments, the connection between the joint 1003 and the conduit 708 may be fixed by using a fixing element (e.g., a clamp). In some embodiments, the joint 1003 and the conduit 708 may also be connected together through a connecting element (e.g., a flange). In some embodiments, the joint 1003 and the conduit 708 may also be connected together through a threaded connection. For example, the joint 1003 may be provided with internal threads, and an outer surface of the conduit 708 may be provided with external threads that match the internal threads. By tightening the threads, the joint 1003 may be connected to the conduit 708. It should be noted that the process of installing the check valve 1002 onto partition 703 is only as an example, which may not be limited. The other processes (e.g., bonding, clamping, etc.) may also be used to install the check valve 1002 on the partition 703, which may not be repeated herein.

[0148] In some embodiments, the anti-backflow structure 100 may only include a check valve 1002 arranged on the partition 730 corresponding to all the first through holes in the first hole group 1001. Merely for example, a lower surface of the partition 703 may be provided with a conduit 708 corresponding to the first hole group 1001. One end of the conduit 708 may be connected to the joint 1003 of the check valve 1002, and the other end of the conduit 708 may be connected to the lower surface of the partition 730. The other end of the conduit 708 may be connected to all the first through holes in the first hole group 1001, which can enable the sewage from an upper space 704 to enter a same check valve through all the first through holes. In some embodiments, the anti-backflow structure 100 may include multiple check valves 1002 arranged on the partition 703 respectively corresponding to one or more first through holes in the first hole group 1001. Merely an example, the lower surface of the partition 730 may be provided with multiple conduits 708 corresponding to the first hole group 1001, and one end of each of the multiple conduits 708 may be connected to the joint 1003 of one of the multiple check valves 1002, and one end of each of the multiple conduits 708 may be connected to the lower surface of the partition 730, and the other end of each of the multiple conduits 708 may be connected to one of the one or more first through holes in the first hole group 1001, so that the sewage from the upper space 704 can enter corresponding check valves 1002 after passing through the one or more first through holes.

[0149] In some embodiments, the count of the check valves 1002 in the anti-backflow structure 100 may be arranged based on the count of the first through holes in the first hole group 1001. In some embodiments, a ratio of the count of the check valves 1002 in the anti-backflow structure 100 to the count of the first through holes in the first hole group 1001 may be 1:1, i.e., each check valve in the anti-backflow structure 100 may correspond to a first through hole in the first hole group and be arranged on the partition 730. In some embodiments, the ratio of the count of the check valves 1002 in the anti-backflow structure 100 to the count of the first through holes in the first hole group 1001 may be 1:2, i.e., each check valve 1002 in the anti-backflow structure 100 may correspond to two first through holes in the first hole group and be arranged on the partition 730. In some embodiments, the ratio of the count of the check valves 1002 in the anti-backflow structure 100 to the count of the first through holes in the first hole group 1001 may be 1:4, i.e., each check valve 1002 in the anti-backflow structure 100 may correspond to four first through holes in the first hole group and be arranged on the partition 730. In some embodiments, the ratio of the count of the check valves 1002 in the anti-backflow structure 100 to the count of the first through holes in the first hole group 1001 may be 1:5, i.e., each check valve 1002 in the anti-backflow structure 100 may correspond to five first through holes in the first hole group and be arranged on the partition 730. In some embodiments, the ratio of the count of the check valves 1002 in the anti-backflow structure 100 to the count of the first through holes in the first hole group 1001 may be 1:10, i.e., each check valve 1002 in the anti-backflow structure 100 may correspond to ten first through holes in the first hole group and be arranged on the partition 730. It should be understood that the ratio of the count of the check valves 1002 in the anti-backflow structure 100 to the count of the first through holes in the first hole group 1001 may also be other values.

[0150] In some embodiments, the valve body 1004 may be made of materials such as rubber, and the joint 1003 may also be made of a same material as the valve body 1004. In some embodiments, an outer surface of the valve body 1004 may be constructed as a plane 1005, and the plane 1005 may cause the valve body 1004 to close (i.e., closing the flat mouth) under an external environmental pressure. In some embodiments, when the cleaning device is used upright, as shown in FIG. 22, a pressure P1 of the sewage in the upper space 704 may act on the valve body 1004 and open the valve body 1004 (i.e., opening the flat mouth), and the sewage may flow into the lower space 705 for storage. In some embodiments, when the cleaning device is flat for use, as shown in FIG. 23, a pressure P2 of the sewage in the lower space 705 may act on an outer surface 1005 of the valve body 1004, which may cause the valve body 1004 to close to prevent the sewage in the lower space 705 from flowing out of the valve body 1004. In some embodiments, a small amount of water temporarily stored in the upper space 704 may be concentrated at the partition 703, away from the inlet 719 of the gas outflow channel 718, not be extracted from the tank body 701, thus greatly reducing the probability of the second motor 727 stopping or being damaged. In some embodiments, when the cleaning device is flat for use, if there is no or only a small amount of sewage in the lower space 705 causing the check valve 1002 to close, the inhaled sewage may temporarily be stored in the upper space 704 near the partition 703 (some sewage may flow into the lower space 705), and may not be extracted from the tank body 701, so that the second motor 727 does not stop or be damaged.

[0151] As shown in FIG. 24, in some embodiments, the check valve 1002 may be an elastic valve plate 1006 corresponding to the first hole group 1001 arranged on the lower surface of the partition 703. When the cleaning device is used upright, the elastic valve plate 1006 may be pushed towards the lower space 1005 under a pressure of the sewage in the upper space 704 (as shown by the dashed line in FIG. 24), which allows the sewage to flow into the lower space 705 for storage. When the cleaning device is flat for use, the sewage in the lower space 1005 may press the elastic valve plate 1006 onto the partition 703 and close the first hole group 1001 to prevent the sewage in the lower space 705 from flowing out through the first hole group 1001.

[0152] As mentioned above, in order to ensure that when the sewage passes through the check valve 1002 and the sewage is located in the upper space 704, the check valve 1002 may be fully opened (e.g., the valve body 1004 is opened or the elastic valve plate 1006 is pushed towards the lower space 705), so that the sewage can flow into the lower space 705 from the upper space 704, and after the sewage flows into the lower space 705, the check valve 1002 may be completely closed (e.g., the valve body 1004 is closed or the elastic valve plate 1006 is attached to the partition 703 to close the first hole group 1001), so that the sewage in the lower space 705 may not flow back to the upper space 704, the valve body 1004 or the elastic valve plate 1006 needs to have a good elastic deformation ability. In some embodiments, the valve body 1004 or the elastic valve plate 1006 may be made of elastic materials, such as rubber, silicone, or the like. In some embodiments, the valve body 1004 or the elastic valve plate 1006 may be made of rubber with a Shore hardness D between 20 - 80 degrees. In some embodiments, the valve body 1004 or the elastic valve plate 1006 may be made of rubber with a Shore hardness D between 40 - 80 degrees. In some embodiments, the valve body 1004 or the elastic valve plate 1006 may be made of rubber with a Shore hardness D between 60 - 70 degrees.

[0153] In some embodiments, the valve body 1004 or the elastic valve plate 1006 may be made of elastic materials, such as rubber, silicone, or the like. In some embodiments, the valve body 1004 or the elastic valve plate 1006 may be made of silicone with a Shore hardness D of 35 degrees. The silicone with the Shore hardness D of 35 degrees has a good elasticity and hardness, which may not only enable the valve body 1004 or the elastic valve plate 1006 to have a good deformation ability, but may also enable the valve body 1004 or the elastic valve plate 1006 to have a good stiffness. In addition, since the silicone has a good corrosion resistance, the valve body 1004 or the elastic valve plate 1006 can be prevented from being corroded by the sewage for a long time, resulting in a reduced service life.

[0154] In some usage scenarios, when a temperature of the garbage sucked in by the cleaning device is relatively high, the relatively high temperature garbage passing through the check valve 1002 may cause the temperature of the check valve 1002 to increase. The high temperature may affect the elasticity of the valve body 1004 or the elastic valve plate 1006 of the check valve 1002, thereby resulting in the lower efficiency of sewage passing through the check valve 1002. Merely for example, when the elasticity of valve body 1004 or the elastic valve plate 1006 decreases, it will increase the difficulty of opening the check valve (i.e., one-way conduction of the check valve 1002 from upper space 704 to the lower space 705), which can reduce the efficiency of sewage passing through the check valve 1002. In addition, an excessive temperature can even cause ablation of the valve body 1004 or the elastic valve plate 1006, thereby reducing a lifespan of the check valve 1002. In order to ensure that the check valve has a good heat resistance performance and can operate normally at high temperatures, in some embodiments, a heat resistance temperature of the material used for making the valve body 1004 or the elastic valve plate 1006 may be 25° C - 80°C. In some embodiments, the heat resistance temperature of the material used for making the valve body 1004 or the elastic valve plate 1006 may be 30°C - 70°C. In some embodiments, the heat resistance temperature of the material used for making the valve body 1004 or the elastic valve plate 1006 may be 40°C - 60°C.

[0155] In some embodiments, the check valve 1002 may also be a duckbill valve, a diaphragm one-way valve, an electromagnetic one-way valve, or other types of one-way valves. In some embodiments, other types of check valves or one-way valves may also be used to replace the check valve 1002 shown in FIG. 21, as long as they can achieve a same function as the check valve 1002, they should be within the scope of protection of the present disclosure.

[0156] As shown in FIG. 18, in some embodiments, an adapter tube 717 may be arranged inside the tank body 701, and the cover 716 may abut against the adapter tube 717. The pressure of the cover 716 may make the adapter tube 717 more stable and may not shake due to the impact of the sewage from the channel 702, even if the sewage flow rate is relatively fast.

[0157] In some embodiments, an inlet 722 of the adapter tube 717 may be coupled with an outlet 723 of the channel 702, and the outlet 720 of the adapter tube 717 may deviate from the cover 716. In some embodiments, an end of the adapter tube 717 towards the cover 716 may be closed, and the outlet 720 may be arranged on a side wall of the adapter tube 717 to extend a movement path of the water-gas mixture inside the tank body 701 and improve the water-gas separation effect, and reduce the risk of water being pumped into the gas outflow channel 718 and reaching the second motor 727, thereby improving the service life of the cleaning device. In some embodiments, the outlet 720 of the adapter tube 717 may deviate from the inlet 719 of the gas outflow channel 718 in a circumferential direction. The outlet 720 of the adapter tube 717 may be radially opposite to the inlet 719 of the gas outflow channel 718, and a height of the outlet 720 may be lower than a height of the inlet 719, which maximizes a distance between the outlet 720 and the inlet 719, prolongs the movement path of the water-gas mixture inside the tank body 701, and improves the water-gas separation effect.

[0158] In some embodiments, the adapter tube 717 and the channel 702 may be an integrated structure, i.e., the adapter tube 717 may be a part of channel 702. The adapter tube 71 may be a straight tube with a diameter less than or equal to a diameter of the channel 702 to facilitate passing through the fitting hole 714 of the partition 703.

[0159] In some embodiments, the adapter tube 717 and channel 702 may be in a separate structure, that is, the adapter tube 717 can be manufactured separately and then assembled with the channel 702. The channel 702 may be manufactured as a straight tube without considering a size relationship between the adapter tube 717 and the fitting hole 714, which can simplify a manufacturing of the channel 702 and the adapter tube 717.

[0160] As shown in FIG. 25, the cover 716 may be provided with a water level probe group 1200, and the water level probe group 1200 may extend towards the lower space 705. The water level probe group 1200 may be configured to monitor a sewage level in tank body 701. When the water level in the tank body 701 reaches a preset threshold, the second motor 727 may stop rotating and remind the user. In some embodiments, the water level probe group 1200 may be a bipolar water level probe. In some embodiments, the water level probe group 1200 can also be a unipolar water level probe, or other forms of water level probes.

[0161] In some embodiments, the water level probe group 1200 may include a first probe group 1201 and a second probe group 1202 that extend towards the lower space 705. An extension length of the first probe group 1201 may be greater than an extension length of the second probe group 1202. The second probe group 1202 may extend into the upper space 704 and be located above the first hole group 1001. When the cleaning device is used upright, the first probe group 1201 may be configured to monitor the water level in the tank body 701. When the water level in water tank 701 reaches a preset threshold, the second motor 727 may stop rotating and remind the user. When the cleaning device is flat for use, the second probe group 1202 may be configured to monitor the water level in the tank body 701. When the water level detected by the second probe group 1202 reaches the preset threshold, the second motor 727 may stop rotating and remind the user. As mentioned above, when the cleaning device is flat for use, the anti-backflow structure 100 arranged on the partition 703 can prevent the sewage in the lower space 705 from flowing back to the upper space 704, so that the second motor 727 may not stop rotating, and the cleaning device may still perform the cleaning work normally. In some embodiments, the sewage sucked into the upper space 704 may accumulate at the partition 703 in the upper space 704. When too much sewage accumulates in the upper space 704 and flows to the cover 716, the sewage may flow to the second probe group 1202 firstly. The second probe group 1202 may generate a signal to instruct the second motor 727 to stop rotating, thereby preventing the sewage from being sucked into the second motor 727 and causing the damage to the second motor 727. By arranging the first probe group 1201 and the second probe group 1202, the water level inside the tank body 701 may be monitored in real-time to prevent the sewage from being sucked into the second motor 727 to cause the damage to the second motor 727, thus greatly extending the service life of the cleaning device.

[0162] In some embodiments, the first probe group 1201 may extend into the lower space 705. That is to say, the first probe group 1201 may extend through the partition 703 to the lower space 705. Before the sewage level in the tank body 701 reaches the partition 703, the first probe group 1201 may detect a threshold water level, which can cause the second motor 727 to stop rotating to prevent the sewage from being sucked into the second motor 727, thereby extending the service life of the cleaning device. A depth of the first probe group 1201 into the lower space 705 may be adaptively adjusted according to practical scenarios.

[0163] In some embodiments, the first probe group 1201 may also be located in the upper space 704 and close to the partition 703. When the partition 703 is blocked, the sewage level in the lower space 705 is relatively low, and when the sewage is accumulated in the upper space 704, the first probe group 1201 can still monitor the sewage level accurately to prevent the sewage from being sucked into the second motor 727. It should be noted that a position of the first probe group 1201 in the upper space 705 may be adjusted according to the actual situation. In addition, according to the actual situation, the first probe group 1201 may also be extended into the lower space 705 or the upper space 704, or the first probe group 1201 may be arranged in both the upper space 704 and the lower space 705.

[0164] In some embodiments, the second probe group 1202 may be located above the outlet 720 of the adapter tube 717 to prevent the sewage from spraying onto the second probe group 1202 directly, thereby reducing a probability of misjudgment.

[0165] Referring to FIG. 18 and FIG. 25, a pair of baffle plates 1203 extending into the upper space 704 may also be provided on the cover 716, and the pair of baffle plates 1203 may be arranged at intervals in the circumferential direction. At least a portion of a side edge 1205 of each baffle plate 1203 may be spaced apart from a side wall of the tank body 701. An outlet 723 of the channel 702 may be arranged between baffle plates 1203. The baffle plate 1203 may guide the sewage splashed onto the baffle plate 1203 to flow downwards to prevent the sewage from splashing around in the tank body 701, thereby adversely affecting the use experience of the cleaning device. In addition, the air sucked into the tank body 701 from the channel 702 needs to bypass the baffle plate 1203 to reach an inlet 719 of the gas outflow channel 718 on the cover 716, which makes the movement path of the water-gas mixture more tortuous and prolongs the movement path of the water-gas mixture inside the tank body 701, thereby improving the water-gas separation effect. As shown in FIG. 25, the second probe group 1202 may also be arranged between the baffle plates 1203, which can make the structure of the cover 716 more compact and facilitate a reduction of a radial size of the dirt storage tank 7, thus making the cleaning device more concise and flexible and easier to clean a small space.

[0166] In some embodiments, an upper region 1206 of a side edge 1205 of the baffle plate 1203 may contact with a side wall of the tank body 701, a lower region 1207 of a side edge 1205 of the baffle plate 1203 may be separated from the side wall of the tank body 701, and the outlet 723 of the channel 702 may correspond to the upper region 1206 of the side edge 1205, so that the baffle plate 1203 not only can prevent the sewage from splashing around in the tank body 701, but also force the water-gas mixture to deflect downward to cross the baffle plate 11203, resulting in a longer movement path of the water-gas mixture inside the tank body 701 and improving the water-gas separation effect.

[0167] In addition, the cover 716 may also be provided with a back plate 1204, and the back plate 1204 may be arranged on a radial opposite side of the outlet 723 of the channel 702 and connected to corresponding baffle plates 1203 at both ends. The inlet 719 of the gas outflow channel 718 may be arranged at a radial outer side of the back plate 1204. The water-gas mixture must flow downwards and cross the back plate 1204 before reaching the inlet 719 of the gas outflow channel 718, which can help to extend the movement path of the water-gas mixture inside the tank body 701, thereby improving the water-gas separation effect. In some embodiments, an extension length of the back plate 1204 may be smaller than an extension length of the baffle plate 1203, which can prevent the baffle plate 1203 and the back plate 1204 from excessively blocking a path of the water-gas mixture, thereby making a smooth airflow and providing a good user experience. It should be noted that the extension length of the back plate 1204 inside the tank body 701 may be adjusted according to the actual situation, which may not be limited herein. In order to effectively extend the movement path of the water-gas mixture inside the tank body 701, in some embodiments, the extension length of the back plate 1204 may be 50 mm- 100 mm. In some embodiments, the extension length of the back plate 1204 may be 60 mm- 100 mm. In some embodiments, the extension length of the back plate 1204 may be 70 mm- 95 mm. In some embodiments, the extension length of the back plate 1204 may be 75 mm- 90 mm. In order to avoid the baffle plate 1203 and the back plate 1204 from excessively blocking the path of the water-gas mixture, in some embodiments, a difference between the extension length of the baffle plate 1203 and the extension length of the back plate 1204 may be 25 mm-40 mm. In some embodiments, the difference between the extension length of the baffle plate 1203 and the extension length of the back plate 1204 may be 28 mm-37 mm. In some embodiments, the difference between the extension length of the baffle plate 1203 and the extension length of the back plate 1204 may be 30 mm-35 mm.

[0168] When the adapter tube 717 and the channel 702 are separated, a water baffle (not shown in the figure) may be arranged above the outlet 720 of the adapter tube 717 and below the second probe group 1202, the water baffle is in contact with the side wall of the tank body 701. In this way, the water baffle may separate the outlet 720 of the second probe group 1202 and the adapter tube 717, thereby preventing the sewage from directly spraying onto the second probe group 1202 more effectively and further reducing the probability of misjudgment.

[0169] Merely for example, as shown in FIG. 27, the dirt storage tank 7 may be arranged on a rear side of the rod 51. In some embodiments, as shown in FIG. 26, an installation region 724 that matches with the rod 51 may be provided on a circumferential outer surface of the tank body 701, and the anti-backflow structure 100 may be radially away from the installation region 724. In some embodiments, the installation region 724 may be located on a front side of the tank body 701, and the anti-backflow structure 100 is located inside the tank body 701 near a rear side of the tank body 701. When the cleaning device is flat for use, the anti-backflow structure 100 may be closed and the second hole group 710 may be in a low level to prevent the sewage in the lower space 705 from flowing through the anti-backflow structure 100 and entering the upper space 704, which can ensure a normal use of the cleaning device.

[0170] As shown in FIG. 28, in some embodiments, the dirt storage tank 7 may be arranged on a front side of the rod 51, and the flat usage mode of the cleaning device may be adapted to an arranging position of the anti-backflow structure 100. In some embodiments, as shown in FIG. 28, the dirt storage tank 7 may be arranged on the front side of the rod 51, and the anti-backflow structure 100 may be radially close to the installation region 724. When the cleaning device is flat for use, the anti-backflow structure 100 may be closed and the second hole group 710 is in a low level, which can prevent the sewage in the lower space 705 from flowing through the anti-backflow structure 100 and entering the upper space 704, which can ensure a normal use of the cleaning device.

[0171] It should be noted that the exemplary cleaning device provided in FIG. 27 and FIG. 28 is only intended to illustrate the position of the dirt storage tank 7 on the machine body 51. The structure of other assemblies of the cleaning device (e.g., the floor brush 1, the handheld dust collection device 6, etc.) may refer to the descriptions in FIGs. 1- 17.

[0172] It should be noted that different embodiments may produce different beneficial effects. In different embodiments, the possible beneficial effects may be any one or a combination of the above, or any other possible beneficial effects.

[0173] The basic concepts have been described. Obviously, for those skilled in the art, the detailed disclosure may be only an example and may not constitute a limitation to the present disclosure. Although not explicitly stated here, those skilled in the art may make various modifications, improvements, and amendments to the present disclosure. These alterations, improvements, and modifications are intended to be suggested by this disclosure and are within the spirit and scope of the exemplary embodiments of this disclosure.

[0174] Moreover, certain terminology has been used to describe embodiments of the present disclosure. For example, the terms "one embodiment," "an embodiment," and/or "some embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present disclosure. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various portions of the specification are not necessarily all referring to the same embodiment. In addition, some features, structures, or features in the present disclosure of one or more embodiments may be appropriately combined.

[0175] Moreover, unless otherwise specified in the claims, the sequence of the processing elements and sequences of the present application, the use of digital letters, or other names are not used to define the order of the application flow and methods. Although the above disclosure discusses through various examples what is currently considered to be a variety of useful embodiments of the disclosure, it is to be understood that such detail is solely for that purpose and that the appended claims are not limited to the disclosed embodiments, but, on the contrary, are intended to cover modifications and equivalent arrangements that are within the spirit and scope of the disclosed embodiments. For example, although the implementation of various assemblies described above may be embodied in a hardware device, it may also be implemented as a software only solution, e.g., an installation on an existing server or mobile device.

[0176] Similarly, it should be appreciated that in the foregoing description of embodiments of the present disclosure, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various embodiments. However, this disclosure may not mean that the present disclosure object requires more features than the features mentioned in the claims. In fact, the features of the embodiments are less than all of the features of the individual embodiments disclosed above.

[0177] In some embodiments, the numbers expressing quantities, properties, and so forth, used to describe and claim certain embodiments of the application are to be understood as being modified in some instances by the term "about," "approximate," or "substantially." Unless otherwise stated, "about," "approximate," or "substantially" may indicate a ±20% variation of the value it describes. Accordingly, in some embodiments, the numerical parameters set forth in the description and attached claims are approximations that may vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, the numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Although the numerical domains and parameters used in the present application are used to confirm the range of ranges, the settings of this type are as accurate in the feasible range in the feasible range in the specific embodiments.

[0178] Each patent, patent application, patent application publication, and other materials cited herein, such as articles, books, instructions, publications, documents, etc., are hereby incorporated by reference in the entirety. In addition to the application history documents that are inconsistent or conflicting with the contents of the present disclosure, the documents that may limit the widest range of the claim of the present disclosure (currently or later attached to this application) are excluded from the present disclosure. It should be noted that if the description, definition, and/or terms used in the appended application of the present disclosure is inconsistent or conflicting with the content described in the present disclosure, the use of the description, definition and/or terms of the present disclosure shall prevail.

[0179] At last, it should be understood that the embodiments described in the disclosure are used only to illustrate the principles of the embodiments of this application. Other modifications may be within the scope of the present disclosure. Thus, by way of example, but not of limitation, alternative configurations of the embodiments of the present disclosure may be utilized in accordance with the teachings herein. Accordingly, embodiments of the present disclosure are not limited to that precisely as shown and described.

Claims

1. A cleaning device, comprising a machine body, a cleaning liquid tank, and a floor brush, wherein the floor brush is connected to an end of the machine body, the cleaning liquid tank is arranged above the floor brush, and the cleaning liquid tank is configured to provide cleaning liquid for the floor brush or floor.

2. The cleaning device of claim 1, wherein the cleaning liquid tank is located on the floor brush, projections of the floor brush and the cleaning liquid tank along a height direction are basically rectangular in shape, and a maximum size of the cleaning liquid tank along a length direction of the cleaning liquid tank is basically consistent with a maximum size of the floor brush along the length direction of the floor brush.

3. The cleaning device of claim 1 or 2, wherein

the floor brush includes a working portion, a maximum size of the working portion along the length direction of the working portion is 250-270 mm,

a ratio of the maximum size of the working portion along a width direction of the working portion to the maximum size of the working portion along the length direction of the working portion is 0.5-0.7, and/or

a ratio of a volume of the cleaning liquid tank to a volume of the working portion is 0.3-0.6.

4. The cleaning device of claim 1 or 2, wherein a ratio of a maximum size of a working portion of the floor brush along a height direction of the working portion to a maximum size of the working portion along the length direction of the working portion is 0.25-0.55.

5. The cleaning device of claim 1 or 2, wherein a ratio of a maximum size of the cleaning liquid tank along a width direction of the cleaning liquid tank to a maximum size of a working portion of the floor brush along the width direction of the working portion is 0.5-0.7.

6. The cleaning device of claim 1 or 2, a ratio of a maximum size of the cleaning liquid tank along the height direction of the cleaning liquid tank to a maximum value of sums of sizes of a working portion of the floor brush along the height direction of the working portion and sizes of the cleaning liquid tank along the height direction of the cleaning liquid tank is 0.4-0.7.

7. The cleaning device of claim 1 or 2, a ratio of a capacity of the cleaning liquid tank and a volume of the cleaning liquid tank is not less than 0.35.

8. The cleaning device of any one of claims 1-7, wherein a center of gravity of the cleaning liquid tank along the height direction of the cleaning liquid tank is projected in a middle region of the cleaning liquid tank.

9. The cleaning device of any one of claims 1-8, wherein a bottom of the cleaning liquid tank is provided with an outlet, the outlet is provided with a valve assembly configured to control an opening and closing state of the outlet, an outlet area of the valve assembly is greater than 3 mm².

10. The cleaning device of any one of claims 1-9, wherein the floor brush includes an installation shell, an upper cover, and a rolling brush, two ends of the rolling brush are rotatably connected to the installation shell, and the upper cover and the cleaning liquid tank are located at an upper portion of the installation shell.

11. The cleaning device of claim 10, wherein

the installation shell includes a bottom shell and a top cover, an installing chamber of the floor brush being formed between the bottom shell and the top cover, and

the floor brush includes a suction port for inhaling garbage, the suction port being located at a front side of the installation shell and a rear side of the rolling brush, the installing chamber of the floor brush being provided with a first channel communicating with the suction port.

12. The cleaning device of claim 11, wherein the installing chamber of the floor brush is provided with a pump, and the pump is configured to pump out the cleaning liquid in the cleaning liquid tank.

13. The cleaning device of claim 12, wherein

the top cover includes an accommodating slot, and the cleaning liquid tank being located within the accommodating slot,

a top end of the pump is higher than a lowest surface in the accommodating slot, and/or

a top end of the first channel is higher than the lowest surface in the accommodating slot.

14. The cleaning device of claim 13, wherein a first protrusion is provided on a bottom surface of the accommodating slot and configured to at least partially accommodate the pump, and a bottom portion of the cleaning liquid tank is provided with a first concave configured to avoid the first protrusion.

15. The cleaning device of claim 12, wherein

the floor brush further includes a first motor, the first motor being configured to drive the rolling brush to rotate,

the first motor is located in the installation chamber of the floor brush and on a side of the first channel away from the pump, or the first motor is arranged within the rolling brush.

16. The cleaning device of any one of claims 10-15, wherein the installation chamber includes a bottom shell, a side of the bottom shell is fixed with a first rolling brush support part, the other side of the bottom shell is connected to a second rolling brush support through a magnetic attraction structure.

17. The cleaning device of any one of claims 10-16, wherein a ratio of a maximum size of the rolling brush along the length direction of the rolling brush to the maximum size of the working portion of the floor brush along the length direction of the working portion is not less than 0.9.

18. The cleaning device of any one of claims 10-17, wherein a top surface of the cleaning liquid tank is basically flush with a top surface of the upper cover, the cleaning liquid tank and the upper cover are independently arranged, and the upper cover is detachably connected to the installation shell.

19. The cleaning device of any one of claims 12-15, wherein the upper cover is installed with a nozzle, and the cleaning liquid in the cleaning liquid tank is sprayed out from the nozzle under an action of the pump.

20. The cleaning device of any one of claims 10-19, wherein the cleaning liquid tank is detachably connected to the installation shell.

21. The cleaning device of any one of claims 10-20, wherein the cleaning liquid tank is installed on the installation shell through a magnetic attraction structure.

22. The cleaning device of claim 13 or 14, wherein along a height direction of the floor brush, a maximum size of the cleaning liquid tank is greater than a size of the accommodating slot.

23. The cleaning device of any one of claims 11-15 and 22, wherein along a length direction of the floor brush, two ends of the top cover are provided with a convex edge, both sides of the cleaning liquid tank are provided with a slot, and the convex edge is correspondingly arranged in the slot.

24. The cleaning device of claim 23, wherein along a height direction of the floor brush, a ratio of a size of the slot to a maximum size of the cleaning liquid tank is 0.4-0.7.

25. The cleaning device of claim 23 or 24, wherein along the length direction of the floor brush, a size of the convex edge is 7-10 mm.

26. The cleaning device of claim 23, wherein

along a height direction of the floor brush, the both sides of the cleaning liquid tank are provided with a convex portion, the convex portion protruding towards the both sides of the cleaning liquid tank relative to the slot, and

along the height direction of the floor brush, a maximum size of the convex portion is 10-20 mm, and/or along the length direction of the floor brush, a size of the convex portion is 8-15 mm.

27. The cleaning device of any one of claims 10-26, wherein both sides of the upper cover and the cleaning liquid tank along a length direction of the floor brush are provided with rounded corners or chamfers.

28. The cleaning device of any one of claims 1-27, wherein the cleaning device further includes a handheld dust collection device, the machine body is provided with a fixed seat, the handheld dust collection device is arranged on the fixed seat, and the handheld dust collection device is detachably connected to the machine body through the fixed seat.

29. The cleaning device of claim 28, wherein the cleaning device further includes a dirt storage tank, the floor brush communicates with the dirt storage tank through the first channel, the dirt storage tank is located at an end of the fixed seat away from the handheld dust collection device, and the dirt storage tank is detachably connected to the machine body through the fixed seat.

30. The cleaning device of claim 29, wherein the dirt storage tank includes a channel, and the channel is connected between the dirt storage tank and the handheld dust collection device.

31. The cleaning device of claim 30, wherein the fixed seat is arranged with a through hole, and the channel communicates with the handheld dust collection device through the through hole.

32. The cleaning device of any one of claims 29-31, wherein a separator is arranged in the dirt storage tank, and the separator is configured to separate gas, liquid, or solid from garbage inside the dirt storage tank.

33. The cleaning device of any one of claims 29-31, wherein the machine body includes a support seat of the dirt storage tank, and the dirt storage tank is arranged on the machine body through the support seat of the dirt storage tank.

34. The cleaning device of claim 33, wherein the support seat of the dirt storage tank is rotatably connected to the machine body.

35. The cleaning device of any one of claims 29-34, wherein

the machine body includes a first locking structure, the first locking structure being configured to lock the handheld dust collection device on the machine body, and/or

the machine body includes a second locking structure, the second locking structure being configured to lock the dirt storage tank on the machine body.

36. The cleaning device of any one of claims 28-35, wherein the handheld dust collection device includes an attachment component, the attachment component includes one or more of a mite removal brush, a flat brush, a hair brush, a pet brush, a hose, and the attachment component is detachably connected to the handheld dust collection device.

37. The cleaning device of any one of claims 29-35, wherein the machine body is rod-shaped, and a cross-sectional area of the fixed seat along a direction perpendicular to a length direction of the machine body, a cross-sectional area of the handheld dust collection device along the direction perpendicular to the length direction of the machine body, and a cross-sectional area of the dirt storage tank along the direction perpendicular to the length direction of the machine are greater than a maximum cross-sectional area of the machine body along the direction perpendicular to the length direction of the machine body.

Drawing