FLOOR BRUSH AND FLOOR SCRUBBER

Abstract

 A floor brush, including: a housing (3); a first rolling brush (201); a second rolling brush (202); a front spraying plate (301); a rear spraying plate (302); a first scraper (401); a second scraper (402); a first sewage wiping member (601); a second sewage wiping member (602); a front evenly-spreading plate (501); and a rear evenly-spreading plate (502). A front suction port (1) is defined between the first scraper (401) and the first rolling brush (201), and a rear suction port (2) is defined between the second scraper (402) and the second rolling brush (202).

Description

CROSS-REFERENCES TO RELATED APPLICATIONS

[0001] This application is based on and claims priority to Chinese Patent Application Nos. 202220148002.5, 202220143350.3, and 202220148003.X, filed on January 19, 2022, the entire disclosures of which are incorporated herein by reference.

FIELD

[0002] The present disclosure relates to the field of cleaning device technologies, and in particular, to a floor brush and a cleaning device.

BACKGROUND

[0003] The current wet cleaning device is more and more popular among users, especially for wireless cleaning devices. Since these wireless cleaning devices are powered by batteries and are not restricted by a power cord in use, they are especially favored by users. With the development of the cleaning devices, more and more attention has been concerned on cleaning efficiency. How to complete cleaning operation quickly and efficiently has become the research and development direction of many products.

[0004] Although there are double rolling brushes to improve the cleaning efficiency, there are still many problems. First of all, during cleaning a floor, no matter whether the rolling brushes are pushed forward or pulled backward, residues that cannot be cleaned may left in a region between front and rear rolling brushes on the floor, resulting in poor floor cleaning effect. Secondly, the existing spraying structure is complicated, which causes an assembly to be time-consuming and labor- intensive. In addition, water is sprayed unevenly. Meanwhile, it is impossible to adjust a proportion of water sprayed on the front and rear rolling brushes and to independently control whether to spray the water on the front and rear rolling brushes.

SUMMARY

[0005] In view of the deficiencies in the related art, various aspects of the present disclosure provide a floor brush, and a cleaning device, which can efficiently clean floor, thereby facilitating improving user experience.

[0006] An embodiment of the present disclosure provides a floor brush, which is adapted to move on a floor to be cleaned. The floor brush includes: a housing having a front part, and a rear part opposite to the front part; a rolling brush including a first rolling brush disposed at the front part of the housing, and a second rolling brush disposed at the rear part of the housing; a scraper including a first scraper disposed adj acent to the first rolling brush, and a second scraper disposed adjacent to the second rolling brush, a front suction port being defined between the first scraper and the first rolling brush, and a rear suction port being defined between the second scraper and the second rolling brush; a spraying plate including a front spraying plate configured to spray water towards the first rolling brush, and a rear spraying plate configured to spray the water towards the second rolling brush; a sewage wiping member in contact with an outer peripheral surface of the rolling brush and configured to squeeze a sewage generated after cleaning a floor with the rolling brush out of the rolling brush, the sewage wiping member including a first sewage wiping member disposed below the front spraying plate, and a second sewage wiping member disposed below the rear spraying plate; and an evenly-spreading plate configured to spread clean water sprayed by the spraying plate on the rolling brush, and including a front evenly-spreading plate in contact with the first rolling brush, and a rear evenly-spreading plate in contact with the second rolling brush.

[0007] In the above technical solution, the floor brush also includes a front rolling brush cover, and a rear rolling brush cover. The front rolling brush cover is located above the first rolling brush, and the rear rolling brush cover is located above the second rolling brush. Further, the front evenly-spreading plate is disposed on an inner surface of the front rolling brush cover, and the rear evenly-spreading plate is disposed on an inner surface of the rear rolling brush cover.

[0008] In the above technical solution, the floor brush also includes a flow guide member of a structural with three-way openings, which includes a main suction port, a front guide channel, and a rear guide channel. The front guide channel is in communication with the front suction port, the rear guide channel is in communication with a rear suction port, and the main suction port is in communication with a sewage tank through a hose, so as to collect sewage from the front suction port and sewage from the rear suction port into a recovery bucket when the cleaning device is operated.

[0009] In the above technical solution, the floor brush also includes a pump. The pump is connected to the front spraying plate by a front delivery pipe. The pump is connected to the rear spraying plate by a rear delivery pipe. At least one solenoid valve is disposed in a flow path of the front delivery pipe and/or the rear delivery pipe.

[0010] In the above technical solution, the rolling brush includes a cylinder body, a driving end cover, and a locking end cover. The cylinder body has a hollow tubular structure, and the driving end cover and the locking end cover are arranged at both ends of the cylinder body, respectively. The locking end cover also has a handle provided thereon. The handle is configured to fix the rolling brush to the housing.

[0011] In the above technical solution, the floor brush also includes a driving assembly. The driving assembly includes a motor capable of driving the first rolling brush and the second rolling brush to rotate when in operation. Specifically, a driving end of the driving assembly may cooperate with the driving end cover to drive the cylinder body by a spline to rotate.

[0012] An embodiment of the present disclosure also provides a cleaning device including a main body, a gripping assembly, and a floor brush. The gripping assembly is connected to an upper end of the main body, and the floor brush is connected to a lower end of the main body. The main body and the floor brush are configured to be rotatable by an adapter.

[0013] In the above technical solution, the main body of the cleaning device includes a suction mechanism, a recovery bucket, and a recovery pipe. The recovery pipe is in communication between the recovery bucket and the floor brush. The suction mechanism is capable of generating a negative pressure to suck the sewage, dirt and other contaminants on the floor into the recovery bucket through the recovery pipe.

[0014] In an embodiment of the present disclosure, there is also provided a floor brush including: a housing having a front part and a rear part opposite to the front part; a rolling brush including a first rolling brush disposed at the front part of the housing and a second rolling brush disposed at the rear part of the housing; a spraying plate including a front spraying plate and a rear spraying plate that are disposed in the housing, the front spraying plate facing towards the first rolling brush, and the rear spraying plate facing towards the second rolling brush; and a scraper including a front scraper and a rear scraper that are disposed at a lower end of the housing and are located between the first rolling brush and the second rolling brush, the front scraper being at least partially in interference fit with floor, a front suction port being defined between the front scraper and the first rolling brush, the rear scraper being at least partially in clearance fit with the floor, and a rear suction port being defined between the rear scraper and the second rolling brush.

[0015] As a further improvement of the present disclosure, the rear scraper extends obliquely downwardly towards the second rolling brush.

[0016] As a further improvement of the present disclosure, the rear scraper includes two inclined surfaces arranged in parallel and a horizontal bottom surface for connecting the two inclined surfaces.

[0017] As a further improvement of the present disclosure, the housing has a front evenly-spreading plate and a rear evenly-spreading plate that are provided therein. The front evenly-spreading plate is located at a rear part of the first rolling brush and in contact with an outer peripheral surface of the first rolling brush, and the rear evenly-spreading plate is located at a front part of the second rolling brush and in contact with an outer peripheral surface of the second rolling brush.

[0018] As a further improvement of the present disclosure, a lower end of the front evenly-spreading plate is higher than a lower end of the front spraying plate, and a lower end of the rear evenly-spreading plate is higher than a lower end of the rear spraying plate.

[0019] As a further improvement of the present disclosure, the housing also includes a front rolling brush cover, and a rear rolling brush cover. The front rolling brush cover is located above the first rolling brush, and the front evenly-spreading plate is disposed on an inner surface of the front rolling brush cover. The rear rolling brush cover is located above the second rolling brush, and the rear evenly-spreading plate is disposed on an inner surface of the rear rolling brush cover.

[0020] As a further improvement of the present disclosure, the front spraying plate has a front sewage wiping member provided on a lower end thereof. The front sewage wiping member faces towards the first rolling brush and in contact with the outer peripheral surface of the first rolling brush. The rear spraying plate has a rear sewage wiping member provided on a lower end thereof. The rear sewage wiping member faces towards the second rolling brush and in contact with the outer peripheral surface of the second rolling brush.

[0021] As a further improvement of the present disclosure, the front sewage wiping member is close to the front suction port, and the rear sewage wiping member is close to the rear suction port.

[0022] As a further improvement of the present disclosure, the front scraper is in an arc shape protruding towards the first rolling brush, and has a lower part extending vertically downward.

[0023] Embodiments of the present disclosure also provides a cleaning device including the floor brush as described above.

[0024] The beneficial effects of the embodiments of the present disclosure are as follows.

(1) The front scraper is at least partially in the interference fit with the floor, and the rear scraper is at least partially in the clearance fit with the floor. Thus, the dirt existing between the first rolling brush and the second rolling brush on the floor can be cleaned up, avoiding the residue on the floor.

(2) By evenly spreading the water on the first rolling brush and the water on the second rolling brush through the front evenly-spreading plate and the rear evenly-spreading plate, respectively, it is possible to ensure that the water is evenly distributed on the first rolling brush and the second rolling brush. Thus, the first rolling brush and the second rolling brush are fully and thoroughly wetted, thereby improving cleaning performance of the first rolling brush and the second rolling brush.

(3) by scraping off the dirt and excess liquid attached to the first rolling brush and the second rolling brush by the front sewage wiping member and the rear sewage wiping member respectively, it is possible to avoid the dirt and excess liquid from staying on the first rolling brush and the second rolling brush for a long time, which improves cleaning quality of the first rolling brush and the second rolling brush on the floor. The dirt and excess liquid that have been scraped off can be quickly collected to prevent the dirt and excess liquid from falling on the floor.

[0025] In an embodiment of the present disclosure, there is also provided a floor brush including a front spraying plate adjacent to a first rolling brush, and a rear spraying plate adjacent to a second rolling brush. A pump is connected to a front spraying plate by a front delivery pipe and connected to a rear spraying plate by a rear delivery pipe. At least one solenoid valve is disposed in a flow path of the front delivery pipe and/or the rear delivery pipe. The at least one solenoid valve is capable of controlling delivering of the water by the front delivery pipe and/or the rear delivery pipe and the delivery volume, so as to adjust a ratio of the water sprayed from the front spraying plate to the water sprayed from the rear spraying plate and independently control the spraying of the front spraying plate and the rear spraying plate, which can improve flexibility of wetting operation by the first rolling brush and the second rolling brush.

[0026] Specifically, the floor brush includes: a housing having a front part, and a rear part opposite to the front part; a first rolling brush disposed at the front part of the housing; and a second rolling brush disposed at the rear part of the housing. The floor brush also includes a spraying mechanism including: a front spraying plate adjacent to the first rolling brush and configured to spray water to the first rolling brush; a rear spraying plate adjacent to the second rolling brush and configured to spray the water to the second rolling brush; and a pump connected to the front spraying plate by a front delivery pipe and to the rear spraying plate by a rear delivery pipe. At least one solenoid valve is disposed in a flow path of the front delivery pipe and/or the rear delivery pipe.

[0027] As a further improvement of the embodiment of the present disclosure, the first rolling brush and the second rolling brush are arranged in parallel, and the pump and the at least one solenoid valve are disposed between the first rolling brush and the second rolling brush.

[0028] As a further improvement of the embodiment of the present disclosure, the pump and the solenoid valve are disposed at a side of an axis of the rolling brush, and the solenoid valve is adjacent to the pump. A motor for driving the rolling brush is disposed at the other side of the axis of the rolling brush.

[0029] As a further improvement of the embodiment of the present disclosure, the pump has an axis extending along an inlet end and an outlet end and perpendicular to the first rolling brush and/or the second rolling brush.

[0030] As a further improvement of the embodiment of the present disclosure, the pump has an axis extending along the inlet end and the outlet end and perpendicular to the first rolling brush and/or the second rolling brush.

[0031] As a further improvement of the embodiment of the present disclosure, at least one three-way adapter is included between the pump and the solenoid valve, and an inlet end of the three-way adapter is connected to an outlet end of the pump; one outlet end of the three-way adapter is connected to the front spraying plate and/or the rear spraying plate, and the other outlet end of the three-way adapter is connected to an inlet end of the solenoid valve.

[0032] As a further improvement of the embodiments of the present disclosure, an outlet end of the solenoid valve is connected to the front spraying plate and/or the rear spraying plate.

[0033] As a further improvement of the embodiments of the present disclosure, the spraying mechanism also includes a clean water delivery pipe; an end of the clean water delivery pipe is connected to the inlet end of the pump, and another end of the clean water delivery pipe passes through a rotation shaft structure of the floor brush to connect to a clean water tank of the cleaning device.

[0034] As a further improvement of the embodiment of the present disclosure, the housing has a fixing base provided thereon. The pump and the solenoid valve are fixed to the housing through the fixing base.

[0035] Embodiments of the present disclosure also provides a cleaning device including a main body, a handle disposed at one end of the main body, and a floor brush.

[0036] As a further improvement of the embodiments of the present disclosure, the floor brush is disposed at another end of the main body.

[0037] Compared with the related art, the disclosed embodiments have the following beneficial effects.

[0038] The floor brush according to the embodiments of the present disclosure includes a front spraying plate adjacent to a first rolling brush, and a rear spraying plate adjacent to a second rolling brush. A pump is connected to the front spraying plate by a front delivery pipe and connected to the rear spraying plate by the rear delivery pipe, respectively. At least one solenoid valve is disposed in a flow path of the front delivery pipe and/or the rear delivery pipe. The at least one solenoid valve is capable of controlling delivering of the water by the front delivery pipe and/or the rear delivery pipe and the delivery volume, so as to adjust a ratio of the water sprayed from the front spraying plate to the water sprayed from the rear spraying plate and independently control the spraying of the front spraying plate and the rear spraying plate, which can improve flexibility of wetting operation by the first rolling brush and the second rolling brush.

[0039] In an embodiment of the present disclosure, there is also provided a spraying assembly mounted on a housing and facing towards a rolling brush. The spraying assembly includes a spraying plate extending along an axis direction of the rolling brush. The spraying plate includes: a first spraying plate assembly having a first flow channel defined on a side thereof, and a plurality of spraying ports defined on a side wall thereof, the plurality of spraying ports being in communication with the first flow channel and evenly arranged at intervals in the axis direction of a rolling brush; and a second spraying plate assembly having a second flow channel defined on a side wall thereof, and an inlet port defined on a side wall thereof, the inlet port being in communication with an inlet end of the second flow channel. The first flow channel is butted with the second flow channel to form a flow channel structure by assembling the first spraying plate assembly with the second spraying plate assembly. The inlet end of the second flow channel is arranged to correspond to an inlet end of the first flow channel. Lengths of flow channels from the plurality of spraying ports to the inlet port are at least partially different.

[0040] As a further improvement of the embodiment of the present disclosure, the first spraying plate assembly has a first connection hole defined on a side wall thereof, and the second spraying plate assembly has a second connection hole defined on a side wall thereof. A connector passes through the first connection hole and the second connection hole to be fixed to the housing.

[0041] As a further improvement of the embodiment of the present disclosure, the connector is a screw.

[0042] As a further improvement of the embodiments of the present disclosure, the first spraying plate assembly has a protrusion provided on a side thereof, and the second spraying plate assembly has a recess provided on a side thereof. The protrusion is engaged with the recess.

[0043] As a further improvement of the embodiment of the present disclosure, the first flow channel at least includes a main flow channel, a first branch flow channel, and a second branch flow channel that are in communication with the main flow channel. A length of the first branch flow channel is different from a length of the second branch flow channel. Some of the plurality of spraying ports are in communication with the first flow channel, and the remaining spraying ports are in communication with the second flow channel.

[0044] As a further improvement of the embodiment of the present disclosure, the housing has a rolling brush cover provided thereon. The rolling brush cover is located above the rolling brush, and has an evenly-spreading plate provided on an inner surface thereof. The evenly-spreading plate is in contact with an outer peripheral surface of the rolling brush, and located above the spraying ports.

[0045] As a further improvement of the embodiment of the present disclosure, a sewage wiping member is disposed below the spraying plate, and is in contact with the outer peripheral surface of the rolling brush.

[0046] As a further improvement of the embodiments of the present disclosure, a transition member extends upwardly from the sewage wiping member, and is connected between another side of the second spraying plate assembly and the housing.

[0047] As a further improvement of the embodiment of the present disclosure, a sewage suction channel is defined below the sewage wiping member, and faces towards the rolling brush.

[0048] In an embodiment of the present disclosure, there is also provided a cleaning device including the spraying assembly.

[0049] Compared with the related art, the disclosed embodiments have the following beneficial effects.

(1) The spraying plate of the present disclosure is assembled by the first spraying plate assembly and the second spraying plate assembly, so that the first flow channel can be easily formed on the first spraying plate assembly, and the second flow channel can be easily formed on the second spraying plate assembly, which is convenient for processing and improves operation efficiency. Meanwhile, it is possible to provide good forming effect for the first flow channel and the second flow channel, and improve smoothness of the water flowing in the first flow channel and the second flow channel. In addition, each of the plurality of spraying ports has good spraying effect, which further ensures that the water can be evenly sprayed on the rolling brush.

(2) The evenly-spreading plate is capable of evenly spreading the water sprayed on the rolling brush, so that the water is more evenly distributed on the rolling brush to fully and thoroughly wet the rolling brush, thereby improving cleaning quality of the rolling brush on the floor.

(3) The spraying assembly is firmly fixed on the housing to ensure the smoothness and uniformity of the water sprayed from the spraying assembly to the rolling brush.

BRIEF DESCRIPTION OF DRAWINGS

[0050] In order to clearly explain technical solutions of embodiments of the present disclosure, accompanying drawings used in the description of the embodiments are briefly described below. Obviously, the accompanying drawings as described below are merely some embodiments of the present disclosure. Based on these drawings, other drawings can be obtained by those skilled in the art without creative effort, in which:

FIG. 1 is a schematic structural view of a floor brush according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural view of a floor brush according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural view of a delivery pipe according to an embodiment of the present disclosure.

FIG. 4 is a schematic structural view of a delivery pipe according to an embodiment of the present disclosure.

FIG. 5 is a schematic structural view of a delivery pipe according to an embodiment of the present disclosure.

FIG. 6 is a schematic structural view of a delivery pipe according to an embodiment of the present disclosure.

FIG. 7 is a schematic structural view of a delivery pipe according to an embodiment of the present disclosure.

FIG. 8 is a schematic view of an exploded structure of a spraying plate according to an embodiment of the present disclosure;

FIG. 9 is a schematic view of an assembly structure of a spraying plate according to an embodiment of the present disclosure;

FIG. 10 is a schematic view of an assembly structure of a spraying plate in another view according to an embodiment of the present disclosure;

FIG. 11 is a front view of a first spraying plate assembly according to an embodiment of the present disclosure;

FIG. 12 is a cross-sectional view of a first spraying plate assembly according to an embodiment of the present disclosure;

FIG. 13 is a schematic structural view of a second spraying plate assembly according to an embodiment of the present disclosure;

FIG. 14 is a front view of a second spraying plate assembly according to an embodiment of the present disclosure;

FIG. 15 is a schematic structural view of a floor brush according to an embodiment of the present disclosure.

[0051] In the accompanying drawings: 3 - housing; 101 - front part; 102 - rear part; 103 - front bottom plate; 104 - rear bottom plate; 105 - front rolling brush cover; 106 - rear rolling brush cover; 201 - first rolling brush; 202 - second rolling brush; 301 - front spraying plate; 302 - rear spraying plate; 401 - first scraper; 402 - second scraper; 601 - first sewage wiping member; 602 - second sewage wiping member; 1 - front suction port; 2 - rear suction port; 4 - rotation shaft structure; 5 - motor; 8 - pump; 9 - solenoid valve; 10 - front delivery pipe; 11 - rear delivery pipe; 12 - clean water delivery pipe; 13 - fixing base; 14 - three-way adapter; 31 - first spraying plate assembly; 311 - first flow channel; 312 - spraying port; 313 - inlet end of first flow channel; 314 - first connection hole; 315 - protrusion; 316 - main flow channel; 317 - first branch flow channel; 318 - second branch flow channel; 32 - second spraying plate assembly; 321 - second flow channel; 322 - inlet port; 323 - inlet end of second flow channel; 324 - second connection hole; 325 - recess; 61 - transition member; 7 - sewage suction channel.

DESCRIPTION OF EMBODIMENTS

[0052] In order to make those skilled in the art better understand technical solutions in the present disclosure, the technical solutions according to embodiments of the present disclosure will be clearly and fully described below in combination with accompanying drawings of the embodiments of the present disclosure. Obviously, the embodiments described below are only some of, rather than all, embodiments of the present disclosure. On a basis of the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative labor shall fall within the scope of the present disclosure.

Embodiment 1:

[0053] Referring to FIG. 1 and FIG. 15, an embodiment of the present disclosure provides a floor brush assembly including a housing 3, a rolling brush, a spraying plate, and a scraper. The housing 3 has a front part 101, and a rear part 102 opposite to the front part 101. The rolling brush includes a first rolling brush 201, and a second rolling brush 202. The first rolling brush 201 is disposed at the front part 101 of the housing 3, and the second rolling brush 202 is disposed at the rear part 102 of the housing 3. The first rolling brush 201 and the second rolling brush 202 are driven to rotate at a high speed to clean a floor. With this double rolling brush arrangement, it is possible to ensure cleaning efficiency. The spraying plate includes a front spraying plate 301 and a rear spraying plate 302 that are disposed in the housing 3. The front spraying plate 301 faces towards the first rolling brush 201, and the rear spraying plate 302 faces towards the second rolling brush 202. The scraper includes a first scraper 401 and a second scraper 402 that are disposed at a lower end of the housing 3. The first scraper 401 and the second scraper 402 are located between the first rolling brush 201 and the second rolling brush 202. The first scraper 401 is at least partially in interference fit with the floor, and a front suction port 1 is defined between the first scraper 401 and the first rolling brush 201. The second scraper 402 is at least partially in clearance fit with the floor, and a rear suction port 2 is defined between the second scraper 402 and the second rolling brush 202. With this arrangement, dirt existing between the first rolling brush 201 and the second rolling brush 202 on the floor can be cleaned up, thereby avoiding the dirt from residue on the floor.

[0054] Specifically, the first scraper 401 is in an arc shape protruding towards the first rolling brush 201, and has a lower part extending vertically downward. In this way, the dirt on the floor can be quickly scraped off. Meanwhile, the residual dirt scraped off from the floor can be quickly collected through the front suction port 1, thereby improving cleaning quality of the floor.

[0055] Specifically, the second scraper 402 extends obliquely downwards towards the second rolling brush 202, which can facilitate the dirt scraped by the second scraper 402 from the floor being quickly collected through the rear suction port 2 to improve the cleaning quality of the floor. More specifically, the second scraper 402 includes two inclined surfaces 403 arranged in parallel and a horizontal bottom surface 404 for connecting the two inclined surfaces 403. The inclined surface 403 close to the second rolling brush 202 is capable of allowing the air to flow smoothly, which is more convenient for the dirt to be collected along the inclined surface 403. The horizontal bottom surface 404 is capable of easily being in clearance fit with the floor to avoid the scraped dirt from being pushed back and forth. Thus, it is possible to ensure that the dirt is collected along the rear suction port 2.

[0056] In order to facilitate quick and stable installation of the first scraper 401 and the second scraper 402, in some embodiments of the present disclosure, the housing 3 has a front bottom plate 103 and a rear bottom plate 104 that are disposed at the lower end thereof. The front bottom plate 103 has a first scraper 401 provided at an end thereof facing towards the first rolling brush 201, and the rear bottom plate 104 has a second scraper 402 provided at an end thereof facing towards the second rolling brush 202.

[0057] In this embodiment, the housing 3 has a front evenly-spreading plate 501 and a rear evenly-spreading plate 502. The front evenly-spreading plate 501 is located at a rear part of the first rolling brush 201 and is in contact with an outer peripheral surface of the first rolling brush 201. The rear evenly-spreading plate 502 is located at a front part of the second rolling brush 202 and is in contact with an outer peripheral surface of the second rolling brush 202. When the water is sprayed onto the first rolling brush 201 and the second rolling brush 202 by the front spraying plate 301, the front evenly-spreading plate 501 is capable of evenly spreading the water on the first rolling brush 201, and the rear evenly-spreading plate 502 is capable of evenly spreading the water on the second rolling brush 201, to ensure that the water is evenly distributed on the first rolling brush 201 and the second rolling brush 202. Thus, the first rolling brush 201 and the second rolling brush 202 are fully and thoroughly wetted, which improves cleaning performance of the first rolling brush 201 and the second rolling brush 202.

[0058] Specifically, a lower end of the front evenly-spreading plate 501 is higher than a lower end of the front spraying plate 301, and a lower end of the rear evenly-spreading plate 502 is higher than a lower end of the rear spraying plate 302. In this way, when evenly spread by the front evenly-spreading plate 501 and the rear evenly-spreading plate 502, the water can continue to flow on the first rolling brush 201 and the second rolling brush 202, which improves utilization rate of the water, and prevents the water from directly falling on the floor.

[0059] In order to protect the first rolling brush 201 and the second rolling brush 202, the housing 3 also includes a front rolling brush cover 105 and a rear rolling brush cover 106. The front rolling brush cover 105 is located above the first rolling brush 201, and the front evenly-spreading plate 501 is arranged on an inner surface of the front rolling brush cover 105. The rear rolling brush cover 106 is located above the second rolling brush 202, and the rear evenly-spreading plate 502 is arranged on an inner surface of the rear rolling brush cover 106. With this arrangement, the front evenly-spreading plate 501 and the rear evenly-spreading plate 502 can be mounted simply and stably in the present disclosure.

[0060] The front spraying plate 301 has a first sewage wiping member 601 provided on a lower end thereof. The first sewage wiping member 601 faces towards the first rolling brush 201 and is in contact with the outer peripheral surface of the first rolling brush 201. The rear spraying plate 302 has a second sewage wiping member 602 provided on a lower end thereof. The second sewage wiping member 602 faces towards the second rolling brush 202 and is in contact with the outer peripheral surface of the second rolling brush 202. The dirt and excess liquid attached to the first rolling brush 201 are wiped off by the first sewage wiping member 601, and the dirt and excess liquid attached to the second rolling brush 202 are wiped off by the second sewage wiping member 602. The wiped dirt and excess liquid may be collected to avoid staying on the first rolling brush 201 and the second rolling brush 202 for a long time. Thus, it is possible to improve the cleaning quality of the first rolling brush 201 and the second rolling brush 202 on the floor.

[0061] Specifically, the first sewage wiping member 601 is close to the front suction port 1, and the second sewage wiping member 602 is close to the rear suction port 2. In this way, the dirt and excess liquid wiped off from the first rolling brush 201 by the first sewage wiping member 601 and the dirt and excess liquid wiped off from the second rolling brush 202 by the second sewage wiping member 602 can be quickly taken away by an airflow from the front suction port 1 and the rear suction port 2, respectively.

[0062] Another embodiment of the present disclosure provides a cleaning device including the floor brush assembly in any one of the above embodiments.

Embodiment 2:

[0063] Referring to FIG. 2, an embodiment of the present disclosure provides a floor brush. The floor brush includes a housing 3, a first rolling brush 201, a second rolling brush 202, a rotation shaft structure 4, a motor 5, and a spraying mechanism.

[0064] The housing 3 is configured to accommodate the first rolling brush 201, the second rolling brush 202, and the spraying mechanism. The housing 3 is in a shape of a hollow cuboid as a whole, and has a front part and a rear part opposite to the front part along a short side direction of the cuboid. The first rolling brush 201 and the second rolling brush 202 are disposed at the front part and the rear part of the housing 3, respectively. Each of the first rolling brush 201 and the second rolling brush 202 is in driving connection to the motor 5. The motor 5 is capable of driving the first rolling brush 201 and the second rolling brush 202 to rotate when in operation to performing a rolling cleaning on the floor. The rotation shaft structure 4 is rotatably connected to the housing 3 for driving the housing 3 to rotate on a horizontal plane as a whole, so as to improve steering flexibility of the first rolling brush 201 and the second rolling brush 202 during cleaning.

[0065] The first rolling brush 201 is arranged in parallel with the second rolling brush 202. A straight line passing through a center of the rotation shaft structure 4 and perpendicular to the first rolling brush 201 and/or the second rolling brush 202 is taken as a rolling brush axis. The spraying mechanism is located between the first rolling brush 201 and a second rolling brush 202 and disposed at a side of the rolling brush axis, and the motor 5 is located between the first rolling brush 201 and the second rolling brush 202 and disposed at another side of the rolling brush axis. The spraying mechanism and the motor 5 are arranged at left and right sides of the rolling brush axis, respectively. Thus, it is possible to improve space utilization rate inside the housing 3 and avoid interference between the pipe of the spraying mechanism and the line of the motor 5.

[0066] The spraying mechanism is configured to spray the water to wet the first rolling brush 201 and the second rolling brush 202 to allow the first rolling brush 201 and the second rolling brush 202 to clean the floor in a wet mode. The spraying mechanism includes a front spraying plate 301, a rear spraying plate 302, a pump 8, at least one solenoid valve 9, a front delivery pipe 10, a rear delivery pipe 11 and a clean water delivery pipe 12. The housing 3 has a fixing base 13, and the pump 8 and the solenoid valve 9 are fixed in the housing 3 by the fixing base 13. Thus, it is possible to prevent the pump 8 and the solenoid valve 9 from loosening and displacement due to collision or vibration on the cleaning device during its operation.

[0067] The front spraying plate 301 is adjacent to the first rolling brush 201 to spray the water to the first rolling brush 201. The rear spraying plate 302 is adjacent to the second rolling brush 202 to spray the water to the second rolling brush 202. The front spraying plate 301 and the rear spraying plate 302 are arranged in parallel. The front spraying plate 301 and the rear spraying plate 302 spray the water independently to the first rolling brush 201 and the second rolling brush 202, respectively, to ensure that wetness of the first rolling brush 201 and the second rolling brush 202 can be independently controlled in different cleaning situations. The front spraying plate 301 and the rear spraying plate 302 may have, but not limited to, a flat plate-like structure. Further, each of the front spraying plate 301 and the rear spraying plate 302 has a same length as to the first rolling brush 201 and the second rolling brush 202. A plurality of spraying ports is evenly distributed in a length direction of each of the front spraying plate 301 and the rear spraying plate 302. Each spraying port is aligned with the first rolling brush 201 or the second rolling brush 202. When clean water is pumped onto the front spraying plate 301 or the rear spraying plate 302, each spraying port is capable of spraying the water to a corresponding region of the first rolling brush 201 or the second rolling brush 202, thereby ensuring all regions of the surface of the first rolling brush 201 or the second rolling brush 202 can be evenly sprayed and wetted by the water.

[0068] The pump 8 is connected to the front spraying plate 301 by the front delivery pipe 10 and connected to the rear spraying plate 302 by the rear delivery pipe 11, respectively. The pump 8 also includes an inlet end and an outlet end. The inlet end of the pump 8 is connected to a clean water tank by the clean water delivery pipe 12. The outlet end of the pump 8 is connected to the front delivery pipe 10 and the rear delivery pipe 11. When the pump 8 is in operation, the clean water is pumped from the clean water tank to the front delivery pipe 10 and the rear delivery pipe 11 to implement independent water supply to the front spraying plate 301 and the rear spraying plate 302. The pump 8 has an axis extending along the inlet end and the outlet end and perpendicular to the first rolling brush 201 and/or the second rolling brush 202. Therefore, an inner space of the housing 3 can be fully utilized to place the pump 8.

[0069] The pump 8 also has a control circuit board provided therein. The control circuit board is configured to change an operating power of the pump 8 to adjust pumping volume of the clean water to the front delivery pipe 10 and the rear delivery pipe 11. When the operation power of the pump 8 is greater, the pumping volume of the clean water to the front delivery pipe 10 and the rear delivery pipe 11 is also greater, and correspondingly, spraying volume of the front spraying plate 301 and the rear spraying plate 302 is also greater. Conversely, the smaller the pumping volume of the clean water to the front delivery pipe 10 and the rear delivery pipe 11 is, the smaller the spraying volume of the front spraying plate 301 and the rear spraying plate 302 is correspondingly.

[0070] At least one solenoid valve 9 is disposed in a flow path of at least one of the front delivery pipe 10 and the rear delivery pipe 11. The solenoid valve 9 is capable of changing the delivery volume of the front delivery pipe 10 and/or the rear delivery pipe 11 by adjusting its own valve opening. When the solenoid valve 9 is in a fully closed state, the front delivery pipe 10 and/or the rear delivery pipe 11 will not delivery the water at all. In this case, the front spraying plate 301 and/or the rear spraying plate 302 is in a state where the water is stopped spraying. When the solenoid valve 9 is in a fully opened state, the delivery volume of the front delivery pipe 10 and/or the rear delivery pipe 11 can reach a maximum value. In this case, the front spraying plate 301 and/or the rear spraying plate 302 can spray the water on the front rolling brush and/or the rear rolling brush with the maximum spraying volume. When the valve opening value of the solenoid valve 9 is changed, the delivery volume of the front delivery pipe 10 and/or the rear delivery pipe 11 will also be changed correspondingly. In this case, the spraying volume of the front spraying plate 301 and/or the rear spraying plate 302 will also be changed synchronously. In this way, a ratio of the spraying volume of the front spraying plate 301 to the spraying volume of the rear spraying plate 302 can be controlled, so that the first rolling brush 201 and the second rolling brush 202 may achieve different spraying wetness.

[0071] With continued reference to FIG. 2, the spraying mechanism also includes a three-way adapter 14. The three-way adapter 14 includes an inlet end and two outlet ends. The inlet end of the three-way adapter 14 is connected to an outlet end of the pump 8. One of the outlet ends of the three-way adapter 14 is connected to the front spraying plate 301 and/or the rear spraying plate 302, and the other of the outlet ends of the three-way adapter 14 is connected to an inlet end of the solenoid valve 9. An output water path of the pump 8 is divided into two parts by the three-way adapter 14 to deliver clean water to the front spraying plate 301 and the rear spraying plate 302, respectively.

[0072] One end of the clean water delivery pipe 12 is connected to an inlet end of the pump 8, and the other end passes through the rotation shaft structure 4 and is connected to the clean water tank. When the floor is cleaned by the floor brush, the floor brush is driven by the rotation shaft structure 4 to rotate on a horizontal plane, and at the same time, the clean water delivery pipe 12 also rotates synchronously, which effectively prevents a normal pumping of the clean water from the clean water tank by the pump 8 due to a bending of the clean water delivery pipe 12.

[0073] Please refer to FIG. 3 to FIG. 7, which illustrate schematic views of different structures of the delivery pipe inside the floor brush of the present disclosure.

[0074] As shown in FIG. 3, a solenoid valve 9 is disposed in a flow path of the rear delivery pipe 11 to adjust a flow rate of the rear delivery pipe 11.

[0075] As shown in FIG. 4, a solenoid valve 9 is disposed in a flow path of the front delivery pipe 10 to adjust a flow rate of the front delivery pipe 10.

[0076] As shown in FIG. 5, a solenoid valve 9 is disposed in each of the flow path of the front delivery pipe 10 and the flow path of the rear delivery pipe 11 to adjust the flow rate of each of the front delivery pipe 10 and the rear delivery pipe 11, respectively.

[0077] As shown in FIG. 6, no solenoid valve 9 is disposed in both the flow paths of the front delivery pipe 10 and the rear delivery pipe 11, and the clean water output from the outlet end of the pump 8 is diverted by the three-way adapter 14, and then is supplied to the front delivery pipe 10 and the rear delivery pipe 11.

[0078] As shown in FIG. 7, no solenoid valve 9 is disposed in both the flow paths of the front delivery pipe 10 and the rear delivery pipe 11, and the clean water output from the outlet end of the pump 8 flows through the solenoid valve 9 and the three-way adapter 14 sequentially, and then is supplied to the front delivery pipe 10 and the rear delivery pipe 11. In this way, the solenoid valve 9 can adjust the flow rate of the front delivery pipe 10 and the rear delivery pipe 11 synchronously.

[0079] Embodiments of the present disclosure also provide a cleaning device. The cleaning device includes a main body, a handle, and a floor brush. The handle is disposed at one end of the main body, and the floor brush is disposed at the other end of the main body. The main body, as a main part of the cleaning device, is configured to accommodate corresponding electronic components to control an operation of the cleaning device. The main body also has a clean water tank detachably provided thereon. The clean water tank is configured to contain clean water for cleaning. The handle is rotatably connected to the main body, and has an elongated handle-like structure as a whole for users to be gripped. When the cleaning device is operated, a front rolling brush and a rear rolling brush inside the floor brush rotate to perform a rolling-cleaning on a floor. The floor brush of the cleaning device of this embodiment is the same as the floor brush as described in the above embodiment, and thus the detailed description thereof will be omitted herein.

Embodiment 3

[0080] Please refer to FIGS. 8 to 15, an embodiment of the present disclosure provides a spraying assembly. The spraying assembly is installed on a housing 3 and faces toward a rolling brush. The spraying assembly includes a spraying plate extending along an axis direction of the rolling brush. The spraying plate includes a first spraying plate assembly 31 and a second spraying plate assembly 32. Both the first spraying plate assembly 31 and the second spraying plate assembly 32 extend along the axis direction of the rolling brush. Taking a forward operating direction of the housing 3 as the front, the first spraying plate assembly 31 and the second spraying plate assembly 32 are arranged opposite to each other in a front-rear direction. The first spraying plate assembly 31 has a first flow channel 311 defined on a side thereof. Also, the first spraying plate assembly 31 has a plurality of spraying ports 312 defined on a side wall thereof and in communication with the first flow channel 311. The plurality of spraying ports 312 is evenly arranged at intervals in the axis direction of the rolling brush. The second spraying plate assembly 32 has a second flow channel 321 defined on a side thereof facing towards the first spraying plate assembly 31. Also, the second spraying plate assembly 32 has an inlet port 322 defined on a side wall thereof and in communication with an inlet end 323 of the second flow channel 321. When the first spraying plate assembly 31 and the second spraying plate assembly 32 are assembled together, the first flow channel 311 is butted with the second flow channel 321 to form a flow channel structure, which is a complete flow channel. The inlet end 323 of the second flow channel is arranged at a position corresponding to the inlet end 313 of the first flow channel, so that when the water enters the inlet port 322, the water enters the inlet end 313 of the first flow channel through the inlet end 323 of the second channel to fill the flow channel structure. Then, the water is sprayed onto the rolling brush through the plurality of spraying ports 312. The spraying plate is assembled by the first spraying plate assembly 31 and the second spraying plate assembly 32, so that the first flow channel 311 can be easily formed on the first spraying plate assembly 31, and the second flow channel 321 can be easily formed on the second spraying plate assembly 32, which is convenient for processing and improves operation efficiency. Meanwhile, it is possible to provide good forming effect for the first flow channel 311 and the second flow channel 321, and improve smoothness of the water flowing in the first flow channel 311 and the second flow channel 321. In addition, each of the plurality of spraying ports 312 has good spraying effect, which further ensures that the water can be evenly sprayed on the rolling brush. A lengths of flow channels from the plurality of spraying ports 312 to the inlet port 322 are not exactly the same, which is convenient for injection molding, and can improve processing quality of the first flow channel and the second flow channel. Further, it is possible to improve flow stability of the water in the first flow channel 311 and the second flow channel 321, and ensure that the water can be sprayed evenly on the rolling brush by each of the plurality of spraying ports 312.

[0081] In order to tightly connect the first spraying plate assembly 31 and the second spraying plate assembly 32, enhance butting tightness of the connection between the first flow channel 311 and the second flow channel 321, and improve installation stability of the spraying plate, in some embodiments, the side wall of the first spraying plate assembly 31 has first connection hole 314 defined thereon, and the side wall of the second spraying plate assembly 32 has a second connection hole 324 defined thereon. A connector (not shown) passes through the first connection hole 314 and the second connection hole 324 to be fixed to the housing 3.

[0082] Specifically, the connector is a screw passing through the first connection hole 314 and the second connection hole 324 to be locked in the housing 3.

[0083] In order to further improve the connection tightness between the first spraying plate assembly 31 and the second spraying plate assembly 32, in some embodiments of the present disclosure, the first spraying plate assembly 31 has a protrusion 315 provided on a side thereof, and the second spraying plate assembly 32 has a recess 325 provided on a side thereof. The protrusion 315 is engaged with the recess 325.

[0084] Specifically, please refer to FIG. 12, the first flow channel 311 at least includes a main flow channel 316, a first branch flow channel 317 and a second branch flow channel 318 that are in communication with the main flow channel 316. A length L 1 of the first branch flow channel 317 is different from a length L2 of the second branch flow channel 318. Some of the plurality of spraying ports 312 are in communication with the first branch flow channel 317, and the remaining spraying ports 312 are in communication with the second branch flow channel 318.

[0085] In this embodiment, please refer to FIG. 15, the housing 3 has a rolling brush cover provided thereon. The rolling brush cover is located above a rolling brush, and has an evenly-spreading plate provided on an inner surface thereof. The evenly-spreading plate is in contact with an outer peripheral surface of the rolling brush, and is located above the spraying ports 312. In this way, when sprayed onto the rolling brush through the spraying port 312, the water is spread by the evenly-spreading plate, so that the water is more evenly distributed on the rolling brush to fully and thoroughly wet the rolling brush, which can improve cleaning quality of the rolling brush on the floor.

[0086] A sewage wiping member is arranged below the spraying plate, and is in contact with the outer peripheral surface of the rolling brush. Thus, dirt adhering to the rolling brush can be wiped off by the sewage wiping member, thereby improving cleaning performance of the rolling brush.

[0087] In order to facilitate installation of the sewage wiping member, in some embodiments of the present disclosure, a transition member 61 extends upwardly from the sewage wiping member, and is connected between the other side of the second spraying plate assembly 32 and the housing 3. Thus, there is no need to additionally provide a structure for fixing the sewage wiping member, which simplifies the structure.

[0088] In some embodiments of the present disclosure, a sewage suction channel 7 is defined below the sewage wiping member, and faces towards the rolling brush. With this arrangement, the dirt removed from the rolling brush can fall down and is sucked into the sewage collection place through the sewage suction channel 7.

[0089] Another embodiment of the present disclosure provides a cleaning device including the spraying assembly as described in any of the above embodiments.

[0090] It will be apparent to those skilled in the art that the present disclosure is not limited to the details of the above exemplary embodiments, and the present disclosure may be implemented in other specific forms without departing from the spirit or essential characteristics of the present disclosure. Accordingly, the embodiments are regarded in all respects as illustrative and not restrictive, and the scope of the present disclosure is defined by the appended claims rather than the above description. Therefore, all changes that fall within the meaning and scope of equivalents of claims are intended to be included therein. Any reference numerals in the claims shall not be construed as limiting the involved claim.

[0091] In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole, the technical solutions in each embodiment may also be appropriately combined to form other implementations that may be understood by those skilled in the art.

Claims

1. A floor brush, comprising:

a housing having a front part, and a rear part opposite to the front part;

a rolling brush comprising a first rolling brush disposed at the front part of the housing, and a second rolling brush disposed at the rear part of the housing;

a scraper comprising a first scraper disposed adjacent to the first rolling brush, and a second scraper disposed adjacent to the second rolling brush, a front suction port being defined between the first scraper and the first rolling brush, and a rear suction port being defined between the second scraper and the second rolling brush;

a spraying plate comprising a front spraying plate configured to spray water towards the first rolling brush, and a rear spraying plate configured to spray water towards the second rolling brush;

a sewage wiping member in contact with an outer peripheral surface of the rolling brush, the sewage wiping member being configured to squeeze a sewage generated rolling brush after cleaning a floor with the rolling brush out of the rolling brush, wherein the sewage wiping member comprises a first sewage wiping member disposed below the front spraying plate, and a second sewage wiping member disposed below the rear spraying plate; and

an evenly-spreading plate configured to evenly spread clean water sprayed on the rolling brush by the spraying plate, the evenly-spreading plate comprising a front evenly-spreading plate in contact with the first rolling brush, and a rear evenly-spreading plate in contact with the second rolling brush.

2. The floor brush according to claim 1, wherein:

the first scraper is at least partially in interference fit with the floor; and

the second scraper is at least partially in clearance fit with the floor.

3. The floor brush according to claim 1, further comprising:

a front rolling brush cover located above the first rolling brush; and

a rear rolling brush cover located above the second rolling brush.

4. The floor brush according to claim 3, wherein:

the front evenly-spreading plate is disposed on an inner surface of the front rolling brush cover; and

the rear evenly-spreading plate is disposed on an inner surface of the rear rolling brush cover.

5. The floor brush according to claim 1, wherein a height of the evenly-spreading plate in a vertical direction is higher than a height of the spraying plate in the vertical direction.

6. The floor brush according to claim 1, wherein the sewage wiping member is disposed below the spraying plate.

7. The floor brush according to claim 6, wherein:

the sewage wiping member is located above the suction port;

the first sewage wiping member is close to the front suction port; and

the second sewage wiping member is close to the rear suction port.

8. The floor brush according to claim 1, further comprising a pump, wherein:

the pump is connected to the front spraying plate by a front water pipe;

the pump is connected to the rear spraying plate by a rear water pipe; and

at least one solenoid valve is disposed in a flow path of the front water pipe and/or the rear water pipe.

9. The floor brush according to claim 8, wherein:

the first rolling brush and the second rolling brush are arranged in parallel; and

the pump and the solenoid valve are disposed between the first rolling brush and the second rolling brush.

10. The floor brush according to claim 9, wherein:

at least one three-way adapter is disposed between the pump and the solenoid valve;

an inlet end of the at least one three-way adapter is connected to an outlet end of the pump;

one outlet end of at least one three-way adapter is connected to the front spraying plate and/or the rear spraying plate; and

another outlet end of at least one three-way adapter is connected to an inlet end of the solenoid valve.

11. The floor brush according to claim 10, wherein the outlet end of the solenoid valve is connected to the front spraying plate and/or the rear spraying plate.

12. The floor brush according to claim 1, wherein:

the spraying plate is assembled by a first spraying plate assembly and a second spraying plate assembly;

the first spraying plate assembly has a first flow channel defined on a side thereof, and a plurality of spraying ports defined on a side wall thereof, the plurality of spraying ports being in communication with the first flow channel and evenly arranged at intervals in an axis direction of the rolling brush; and

the second spraying plate assembly has a second flow channel defined on a side thereof facing towards the first spraying plate assembly, and an inlet port defined on a side wall thereof, the inlet port being in communication with an inlet end of the second flow channel.

13. The floor brush according to claim 12, wherein:

the first flow channel is butted with the second flow channel to form a flow channel structure;

the inlet end of the second flow channel is arranged to correspond to an inlet end of the first flow channel; and

lengths of flow channels from the plurality of spraying ports to the inlet port are at least partially different from each other.

14. The floor brush according to claim 13, wherein the spraying plate is fixed to the housing by a connector.

15. A cleaning device, comprising:

a body;

a handle disposed at an end of the body; and

the floor brush according to any one of claims 1 to 14.

16. The cleaning device according to claim 15, wherein:

the handle is connected to an upper end of the body;

the floor brush is connected to a lower end of the body; and

the body and the floor brush are configured to be ratable by an adapter.

17. A floor brush, comprising:

a housing having a front part, and a rear part opposite to the front part;

a rolling brush comprising a first rolling brush disposed at the front part of the housing, and a second rolling brush disposed at the rear part of the housing;

a spraying plate comprising a front spraying plate and a rear spraying plate that are disposed in the housing, the front spraying plate facing towards the first rolling brush, and the rear spraying plate facing towards the second rolling brush; and

a scraper comprising a first scraper and a second scraper that are disposed at a lower end of the housing and are located between the first rolling brush and the second rolling brush, the first scraper being at least partially in interference fit with a floor, a front suction port being defined between the first scraper and the first rolling brush, the second scraper being at least partially in clearance fit with a floor, and a rear suction port being defined between the second scraper and the second rolling brush.

18. A floor brush, comprising:

a housing having a front part, and a rear part opposite to the front part;

a first rolling brush disposed at the front part of the housing;

a second rolling brush disposed at the rear part of the housing; and

a spraying mechanism comprising:

a front spraying plate adjacent to the first rolling brush and configured to spray water to the first rolling brush;

a rear spraying plate adjacent to the second rolling brush and configured to spray the water to the second rolling brush; and

a pump connected to the front spraying plate by a front delivery pipe and connected to the rear spraying plate by a rear delivery pipe, at least one solenoid valve being disposed in a flow path of the front delivery pipe and/or the rear delivery pipe.

19. A floor brush, comprising a spraying plate, the spraying plate comprising:

a first spraying plate assembly having a first flow channel defined on a side thereof, and a plurality of spraying ports defined on a side wall thereof, the plurality of spraying ports being in communication with the first flow channel and evenly arranged at intervals in an axis direction of a rolling brush; and

a second spraying plate assembly having a second flow channel defined on a side thereof, and an inlet port defined on a side wall thereof, the inlet port being in communication with an inlet end of the second flow channel, wherein:

the first flow channel is butted with the second flow channel to form a flow channel structure by assembling the first spraying plate assembly with the second spraying plate assembly;

the inlet end of the second flow channel is arranged to correspond to an inlet end of the first flow channel; and

lengths of flow channels from the plurality of spraying ports to the inlet port are at least partially different from each other.

20. A cleaning device, comprising the floor brush according to any one of claims 17 to 19.

Drawing