MOUNTING STRUCTURE FOR SWITCH ASSEMBLY AND DRAINAGE VALVE ASSEMBLY

Abstract

 The invention provides a mounting structure for a switch assembly and a drainage valve assembly used for connecting a drainage valve assembly arranged in a water tank and a switch assembly arranged on a cover of the water tank, wherein the switch assembly comprises a body, a switch, a fastening base and a fastener, the body is provided with a cavity with an open top, the fastening base is rotatably arranged in the cavity and connected with the fastener, and the fastener is rotatably arranged in the body; the body is arranged in the cover of the water tank, and the drainage valve assembly is provided with a mounting part which is connected and matched with the fastener; the fastening base drives the fastener to rotate relative to the body when rotating, so that the fastener and the mounting part are locked together, and the switch is arranged on the body; alternatively, after the fastener and the mounting part are locked together, the switch is arranged on the fastening base. This invention features a simple structure and easy mounting, line or pipe fracture or improper locking caused by the tangling of lines or pipes in the locking process is effectively prevented, and secure fastening is effectively ensured.

Description

BACKGROUND OF THE INVENTION

1. Technical Field

[0001] The invention relates to the technical field of toilet drain valves, in particular to a mounting structure for a switch assembly and a drainage valve assembly.

2. Description of Related Art

[0002] With the continuous advancement of technology and increasing demand for a high-quality lifestyle, the functions of a drainage valve used in a toilet tank have also expanded. Generally, a drainage valve consists of a switch assembly that regulates the drainage process, and the switch assembly is usually located on a tank cover of the toilet tank. To realize some functions of the drainage valve, lines or pipes are needed between the switch assembly and internal components of the toilet tank. For example, in an induction-controlled toilet drainage valve, an induction module is typically included for inductive control. The induction module is integrated into a switch on the tank cover. A supplying cell box, which provides power to the induction module, or an electrically operated mechanism in signal connection with the induction module, is arranged on the drainage valve in the toilet tank. The two components need to be electrically connected by a wire. For another example, in a case where a detergent box is arranged in the toilet tank, to facilitate detergent addition, a liquid replenishing chamber is often set up at the switch assembly, enabling direct replenishment of a detergent into the detergent box without opening the tank cover. To achieve this, a liquid replenishing pipe is required to connect the switch assembly and the detergent box.

BRIEF SUMMARY OF THE INVENTION

Technical Problem

[0003] However, in the prior art, during assembly of a mounting structure that relies on threaded connection between a switch assembly and a drainage valve assembly to realize fixed connection between a tank cover and a tank body, a switch body of the switch assembly generally needs to be rotated to achieve the threaded connection between the switch assembly and the drainage valve assembly. Since lines or pipes are usually threaded through the switch body, with one end connected to the switch assembly and the other end connected to components inside the tank, the rotation of the switch body can cause tangling of the lines or pipes. This may hinder proper tightening of the switch body and may even cause damage to the lines or pipes during the tightening process. Therefore, the existing mounting structure that relies on threaded connection between a switch assembly and a drainage valve assembly to realize fixed connection between a tank cover and a tank body is not suitable for situations where the switch assembly is connected to components inside the tank via lines or pipes. It is crucial to explore a new mounting structure for a switch assembly and a drainage valve assembly that can accommodate such situations.

Solutions to problems

Technical solution

[0004] For an existing structure where a switch assembly on a tank cover and a drainage valve assembly inside a water tank are locked together, and the switch assembly is connected to components inside the tank via lines or pipes, difficulties in achieving proper tightening or the risk of breaking the lines or pipes may arise during mounting of the switch assembly and the drainage valve assembly. To address this, the invention provides a mounting structure for a switch assembly and a drainage valve assembly.

[0005] In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows.

[0006] Disclosed is a mounting structure for a switch assembly and a drainage valve assembly used for connecting a drainage valve assembly arranged in a water tank and a switch assembly arranged on a cover of the water tank. The switch assembly comprises a body, a switch, a fastening base and a fastener, the body is provided with a cavity with an open top, the fastening base is rotatably arranged in the cavity and connected with the fastener, and the fastener is rotatably arranged in the body; the body is arranged in the cover of the water tank, and the drainage valve assembly is provided with a mounting part which is connected and matched with the fastener; the fastening base drives the fastener to rotate relative to the body when rotating, so that the fastener and the mounting part are locked together, and the switch is arranged on the body; alternatively, after the fastener and the mounting part are locked together, the switch is arranged on the fastening base.

[0007] Preferably, the fastener is a threaded part, and the mounting part is a threaded connecting sleeve which is in threaded connection with the threaded part.

[0008] Preferably, the threaded part is in limiting fit with the body in an axial direction, a bottom wall of the cavity is provided with a through hole, and the threaded part is rotatably arranged in the through hole; an outer periphery of a top of the threaded part is provided with a convex ring, and the body is provided with a limiting part for axially limiting the threaded part; and a bottom surface of the convex ring is in abutting fit with a periphery of the through hole, and a top surface of the convex ring is in limiting fit with the limiting part.

[0009] Preferably, the limiting part is a lock pin arranged in the cavity, and the lock pin is engaged with the top surface of the convex ring to axially limit the threaded part.

[0010] Preferably, the threaded part is provided with a shaft hole with two through ends, the fastening base is capable of axially sliding through the shaft hole, and a side wall of the fastening base is in limiting fit with a hole wall of the shaft hole in a circumferentially direction, so that the rotation of the fastening base drives the threaded part to rotate; and the switch is arranged in the body and located on the fastening base.

[0011] Preferably, a first elastic part for providing an elastic restoring force to the fastening base is arranged between the fastening base and the threaded part.

[0012] Preferably, a bottom of the fastening base is provided with a snap-fit part for preventing the fastening base from being separated from the threaded part under the action of the first elastic part, and the snap-fit part is in limiting fit with a bottom of the threaded part.

[0013] Preferably, the mounting structure for the switch assembly and the drainage valve assembly further comprises a pressing part which is slidably arranged in the threaded connecting sleeve in an axial direction and in limiting fit with the threaded connecting sleeve in a circumferential direction, wherein the pressing part comprises a pressing block, an external thread part and a directional rod, the external thread part is located between the pressing block and the directional rod, the fastening base is provided with an axially extending inner cavity, and openings are formed at two ends of the inner cavity; the directional rod passes through the inner cavity and is in limiting fit with the switch in a circumferential direction, and a cavity wall of the inner cavity is provided with an internal thread part which cooperates with the external thread part; and a mating pitch between the external thread part and the internal thread part is equal to that between the threaded part and the threaded connecting sleeve.

[0014] Preferably, a second elastic part for providing an elastic restoring force to the pressing part is arranged between the pressing part and the threaded connecting sleeve.

[0015] Preferably, the switch comprises a switch housing, the switch housing is provided with an extension section extending into the inner cavity, the extension section has a hollow structure, and the directional rod is sleeved in the extension section and is in limiting fit with the extension section in a circumferential direction.

[0016] Preferably, the switch comprises a switch housing and an inductive element arranged in the switch housing, and the inductive element is connected to one end of a line passing through the body; alternatively, the switch comprises a switch housing, an inner cavity of the switch housing is a liquid filling cavity, and a bottom of the liquid filling cavity is connected with one end of a pipe passing through the body.

[0017] Preferably, a top peripheral wall of the fastening base is provided with a plurality of circumferentially arranged anti-skid ribs, or a top end of the fastening base is provided with a driving groove which is capable of cooperating with an external jig to drive the fastening base to rotate.

[0018] Preferably, the body is provided with a slot hole through which a line or pipe connected to the switch passes.

Beneficial effects of the Invention

Beneficial effects

[0019] The invention provides a mounting structure for a switch assembly and a drainage valve assembly, the switch assembly comprises a body, a switch, a fastening base and a fastener, the fastening base is rotatably arranged in the body and connected with the fastener, the fastener is rotatably arranged in the body, and the body is arranged in a cover of a water tank; and the fastening base drives the fastener to rotate relative to the body when rotating, so that the fastener and a mounting part on the drainage valve assembly are locked together, thus achieving the connection between the drainage valve assembly and the switch assembly. By placing the switch on the body, the switch does not rotate with the fastening base, effectively preventing the tangling of lines or pipes during the locking process and ensuring secure fastening. Alternatively, after the fastener and the mounting part are locked together, the switch is arranged on the fastening base, instead of integrally forming the switch and the fastening base, and in this case, the switch also does not rotate with the fastening base, which features a simple structure and easy mounting, the tangling of lines or pipes in the locking process is also effectively prevented, and secure fastening is effectively ensured.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

[0020] 

Fig. 1 is an exploded view of the overall structure of the invention;

Fig. 2 is an overall assembly diagram of the invention;

Fig. 3 is an assembly diagram of the invention and a water tank;

Fig. 4 is a sectional view of a body, a fastening base and a threaded part in the invention which are fitted together;

Fig. 5 is a perspective view of a body, a fastening base and a threaded part in the invention which are fitted together;

Fig. 6 is a perspective view of a body of the invention ;

Fig. 7 is a diagram of a threaded connecting sleeve, a pressing part and a second elastic part of the invention which are fitted together;

Fig. 8 is a bottom view of a switch housing of Embodiment 1 of the invention;

Fig. 9 is a diagram of the mounting process of the invention;

Fig. 10 is a state diagram of a threaded part and a threaded connecting sleeve of the invention at the beginning of fitting;

Fig. 11 is a state diagram of a threaded part and a threaded connecting sleeve of the invention which are properly connected;

Fig. 12 is a state diagram of a push switch and a fastening base of the invention;

Fig. 13 is a sectional view of Embodiment 2 of the invention ; and

Fig. 14 is a diagram of the liquid adding process in Embodiment 2 of the invention.

[0021] Included in the figures are: 10. drainage valve assembly; 11. threaded connecting sleeve; 12. electric drive mechanism; 13. battery box; 14. drainage valve; 141. start component; 20. switch; 21. switch housing; 211. extension section; 22. inductive element; 23. decorative plate; 24. liquid filling cavity; 25. decorative cover; 30. water tank; 31. cover of water tank; 40. body; 41. through hole; 42. limiting part; 43. slot hole; 50. fastening base; 51. snap-fit part; 52. internal thread part; 53. anti-skid rib; 60. threaded part; 61. convex ring; 70. first elastic part; 80. pressing part; 81, pressing block; 82. external thread part; 83. directional rod; 90. second elastic part; 100. liquid storage tank; 110. wire; 120. pipe.

DETAILED DESCRIPTION OF THE INVENTION

[0022] For an existing structure where a switch assembly on a tank cover and a drainage valve assembly inside a water tank are locked together, and the switch assembly is connected to components inside the tank via lines or pipes, difficulties in achieving proper tightening or the risk of breaking the lines or pipes may arise during mounting of the switch assembly and the drainage valve assembly. To address this, the invention proposes a new solution, which will be described in detail below, along with the accompanying drawings to offer a clearer understanding.

Embodiment 1

[0023] Referring to Figs. 1-3, a mounting structure for a switch assembly and a drainage valve assembly is used for connecting a drainage valve assembly 10 arranged in a water tank 30 and a switch assembly arranged on a cover of the water tank 31.

[0024] The drainage valve assembly 10 is provided with an electric drive mechanism 12, a battery box 13 and a drainage valve 14. The electric drive mechanism 12 controls the opening of the drainage valve 14 for drainage, and the battery box 13 is arranged at one side of the drainage valve 14 and used for supplying power to the electric drive mechanism 12. The switch assembly is connected with the electric drive mechanism 12 and the battery box 13 through a wire 110, the battery box 13 supplies power to the switch assembly, and the switch assembly controls the opening and closing of the electric drive mechanism 12. The wire 110 comprises two sections, one end of one of the sections is connected with the switch assembly, one end of the other section is connected with the electric drive mechanism 12 and the battery box 13, and the other ends of the two sections are connected through butt connectors, allowing the switch assembly to be conveniently connected with the electric drive mechanism 12 and the battery box 13 by the wire.

[0025] Referring to Figs. 1-6, the switch assembly comprises a body 40, a switch 20, a fastening base 50 and a fastener. The body 40 is provided with a cavity with an open top, the fastening base 50 is rotatably arranged in the cavity and connected with the fastener, and the fastener is rotatably arranged in the body 40.

[0026] The body 40 is embedded in the cover of the water tank 31, and a top of the drainage valve assembly 10 is provided with a mounting part which is connected and matched with the fastener. The fastening base 50 drives the fastener to rotate relative to the body 40 when rotating, so that the fastener and the mounting part can be locked together. After the fastener and the mounting part are locked together, the switch 20 is arranged on the fastening base 50.

[0027] In this embodiment, the fastener is a threaded part 60, and the mounting part is a threaded connecting sleeve 11 which is in threaded connection with the threaded part 60. Preferably, the threaded part 60 is provided with an external thread, and correspondingly, the threaded connecting sleeve 11 is provided with an internal thread.

[0028] To make installation easier, it is preferable that the threaded part 60 is in limiting fit with the body 40 in an axial direction, a bottom wall of the cavity is provided with a through hole 41, and the threaded part 60 is rotatably arranged in the through hole 41. An outer periphery of a top of the threaded part 60 is provided with a convex ring 61, and the body 40 is provided with a limiting part 42 for axially limiting the threaded part 60. A bottom surface of the convex ring 61 is in abutting fit with a periphery of the through hole 41, and a top surface of the convex ring 61 is in limiting fit with the limiting part 42. Specifically, the limiting part 42 is a lock pin arranged in the cavity, and the lock pin is engaged with the top surface of the convex ring 61 to axially limit the threaded part 60. In this embodiment, the threaded part 60 extends downward out of the through hole 41 to be matched with the threaded connecting sleeve 11, or alternatively, the threaded part 60 does not extend out of the through hole 41, but the threaded connecting sleeve 11 extends into the through hole 41 to be matched with the threaded part 60.

[0029] In this embodiment, in order to enrich the functions of the switch 20, the switch 20 is also used as a mechanical button. By pressing the switch 20, the drainage valve 14 can be driven to be open for drainage, so that the drainage valve 14 can be opened electrically and manually through the switch 20. Specifically, the threaded part 60 is provided with a shaft hole with two through ends, the fastening base 50 can axially slide through the shaft hole, and a side wall of the fastening base 50 is in limiting fit with a hole wall of the shaft hole in a circumferentially direction, so that the rotation of the fastening base 50 can drive the threaded part 60 to rotate, that is, the fastening base 50 can slide up and down relative to the threaded part 60 in the shaft hole but cannot rotate relative to the threaded part 60 in the shaft hole. The switch 20 is arranged in the body 40 and located on the fastening base 50. When the switch 20 is pressed, the switch 20 drives a start component 141 of the drainage valve 14 through the fastening base 50 to realize drainage. The start component 141 may comprise a lifting rod and a pulling rod.

[0030] A first elastic part 70 for providing an elastic restoring force to the fastening base 50 is arranged between the fastening base 50 and the threaded part 60. In this embodiment, the first elastic part 70 is a spring, and the spring is sleeved outside the fastening base 50, so that the structure is simple and compact.

[0031] A bottom of the fastening base 50 is provided with a snap-fit part 51 for preventing the fastening base 50 from being separated from the shaft hole of the threaded part 60 under the action of the first elastic part 70, and the snap-fit part 51 is in limiting fit with a bottom of the threaded part 60. In this embodiment, the snap-fit part 51 is a C-shaped piece, and the bottom of the fastening base 50 is provided with a receiving groove for installing the C-shaped piece.

[0032] Referring to Figs. 1 and 7, the mounting structure of this embodiment further comprises a pressing part 80 which is slidably arranged in the threaded connecting sleeve 11 in an axial direction and in limiting fit with the threaded connecting sleeve 11 in a circumferential direction, that is, the pressing part 80 can axially slide in the threaded connecting sleeve 11 relative to the threaded connecting sleeve 11 but cannot rotate relative to the threaded connecting sleeve 11.

[0033] The pressing part 80 comprises a pressing block 81, an external thread part 82 and a directional rod 83, the external thread part 82 is located between the pressing block 81 and the directional rod 83, and the pressing block 81, the external thread part 82 and the directional rod 83 are integrally formed.

[0034] The fastening base 50 is provided with an axially extending inner cavity, and openings are formed at two ends of the inner cavity. The directional rod 83 passes through the inner cavity and is in limiting fit with the switch 20 in a circumferential direction. A cavity wall of the inner cavity is provided with an internal thread part 52 which cooperates with the external thread part 82. A mating pitch between the external thread part 82 and the internal thread part 52 is equal to that between the threaded part 60 and the threaded connecting sleeve 11, so as to avoid interference between the threaded connection between the external thread part 82 and the internal thread part 52 and the threaded connection between the threaded part 60 and the threaded connecting sleeve 11.

[0035] A second elastic part 90 for providing an elastic restoring force to the pressing part 80 is arranged between the pressing part 80 and the threaded connecting sleeve 11. The second elastic part 90 in this embodiment is a tension spring. The pressing block 81 of the pressing part 80 is in transmission fit with the start component 141 of the drainage valve 14.

[0036] Referring to Fig. 8, the switch 20 comprises a switch housing 21, and the switch housing 21 is provided with an extension section 211 extending into the inner cavity. The extension section 211 has a hollow structure, and the directional rod 83 is sleeved in the extension section 211 and is in limiting fit with the extension section 211 in a circumferential direction. The hollow structure is a flat hole matched with the directional rod. The direction of the switch housing 21 can be positioned through the cooperation of the directional rod and the flat hole, so as to avoid wiring interference caused by uncertain orientation of the wire 110 led out from the switch housing 21, which may affect the normal operation of the drainage valve assembly 10.

[0037] Referring to Fig. 1, the switch assembly of this embodiment is an inductive switch assembly, the switch 20 further comprises an inductive element 22 arranged in the switch housing 21, and the inductive element 22 is sealed in the switch housing 21 through sealant pouring or via a sealing part. The inductive element 22 is connected to one end of a line (wire 110) passing through the body 40. The switch housing 21 is made of a light filter material, and the inductive element 22 may be, but is not limited to, an infrared inductive element 22 or a capacitive inductive element. The inductive element 22 sends an induction signal to the electric drive mechanism 12 through the wire 110, so as to control the electric drive mechanism 12 to be started to make the drainage valve 14 initiate the drainage process. The electric drive mechanism 12 can be driven by a motor or the like.

[0038] Referring to Fig. 1, an outer wall of the switch housing 21 is also provided with a decorative plate 23 which is a light-transmitting plate.

[0039] Referring to Figs. 1 and 5, a top peripheral wall of the fastening base 50 is provided with a plurality of circumferentially arranged anti-skid ribs 53, enabling a user to directly rotate the fastening base 50 by hand; or a top end of the fastening base 50 is provided with a driving groove which can cooperate with an external jig (such as a screwdriver) to drive the fastening base 50 to rotate.

[0040] The body 40 is also provided with a slot hole 43 through which the line (wire 110) connected to the switch passes.

[0041] The simple mounting and dismounting process of the invention is as follows.

[0042] Referring to Figs. 9 and 10, during mounting, the drainage valve 14 is fixed on a bottom wall of the water tank 30, and the body 40 is embedded in the cover of the water tank 31; after passing through the slot hole 43, the section of the wire 110 connected to the inductive element 22 is connected with the other section of the wire 110 led out from the electric drive mechanism 12 and the battery box 13 through the butt connectors; and at this point, the switch 20 is not mounted on the fastening base 50, so as to directly rotate the fastening base 50.

[0043] Next, the fastening base 50 is rotated, and the fastening base 50 drives the threaded part 60 to rotate relative to the body 40, and the threaded part 60 and the threaded connecting sleeve 11 are locked together. At the same time, threaded connection between the external thread part 82 on the pressing part 80 and the internal thread part 52 of the fastening base 50 is realized, so that the switch assembly and the drainage valve assembly 10 are locked together. At this point, as shown in Fig. 11, since the switch assembly is arranged on the cover of the water tank 31 and the drainage valve assembly 10 is arranged on the water tank 30, the cover of the water tank 31 and the water tank 30 are in locking fit. Finally, the switch 20 is inserted into the inner cavity of the fastening base 50 along the arrow direction in Fig. 9, and is in limiting fit with the directional rod 83 to realize installation and fixation. When the drainage valve 14 needs to be opened for drainage, one needs only to extend their hand towards the switch 20, prompting the inductive element 22 to detect its presence, thereby realizing inductive drainage control.

[0044] Referring to Fig. 12, when the drainage valve 14 needs to be opened mechanically for drainage, one needs only to press the switch 20, and the switch 20 moves down and drives the start component 141 of the drainage valve 14 through the fastening base 50 and the pressing part 80, so that the start component 141 opens the drainage valve 14 to drain water.

[0045] During dismounting, the switch 20 is first detached from the fastening base 50, and the fastening base 50 is rotated in a direction opposite to the locking direction, so that the fastening base 50 drives the threaded part 60 to be separated from the threaded connecting sleeve 11; and at the same time, the external thread part 82 of the pressing part 80 and the internal thread part 52 of the fastening base 50 are separated, so that the switch assembly is separated from the drainage valve assembly 10, thus realizing dismounting.

[0046] In other embodiments, the switch 20 can also be arranged on the body 40; specifically, the switch 20 can be fixed on the body 40 by clamping, screwing or welding, or the switch 20 can be integrally and fixedly connected with the body 40. Because the body 40 does not rotate with the fastening base 50 during assembly, the switch 20 will not rotate during assembly, thus effectively avoiding the tangling of lines or pipes connected with the switch 20.

Embodiment 2

[0047] Referring to Figs. 13 and 14, the switch 20 of this embodiment is not provided with the inductive element 22, and the drainage valve assembly 10 is not provided with the electric drive mechanism 12 electrically connected with the inductive element 22. In this embodiment, the inner cavity of the switch housing 21 is a liquid filling cavity 24, a bottom of the liquid filling cavity 24 is connected with one end of a pipe 120 passing through the body 40, and the other end of the pipe 120 is connected with a liquid storage tank 100 which is fixed at one side of the drainage valve 14. The top of the switch 20 is provided with a decorative cover 25. When the decorative cover 25 is removed, liquid can be added into the liquid filling cavity 24, and the liquid in the liquid filling cavity 24 further flows into the liquid storage tank 100 through the pipe 120. The mounting structure of the invention can prevent the tangling of the pipe 120 during installation.

[0048] Other mounting structures, connection relationships and working principles are the same as those in Embodiment 1, which will not be repeated.

[0049] The mounting structure provided by this invention can be applied to the technical field of toilet drainage valves for connecting the drainage valve assembly 10 and the switch assembly. This invention features a simple structure and easy mounting, the tangling of lines or pipes in the locking process is effectively prevented, and secure fastening is effectively ensured.

[0050] The above embodiments are only used to explain the technical scheme of the invention, but not to limit it. Although the above embodiments specifically explain the invention, relevant technicians should understand that the specific implementation of the invention can still be modified or replaced by equivalents, and any modification and equivalent substitution that does not depart from the spirit and scope of the invention shall be included in the scope of the claims of the invention.

Claims

1. A mounting structure for a switch assembly and a drainage valve assembly used for connecting a drainage valve assembly arranged in a water tank and a switch assembly arranged on a cover of the water tank, wherein the switch assembly comprises a body, a switch, a fastening base and a fastener, the body is provided with a cavity with an open top, the fastening base is rotatably arranged in the cavity and connected with the fastener, and the fastener is rotatably arranged in the body; the body is arranged in the cover of the water tank, and the drainage valve assembly is provided with a mounting part which is connected and matched with the fastener; the fastening base drives the fastener to rotate relative to the body when rotating, so that the fastener and the mounting part are locked together, and the switch is arranged on the body; alternatively, after the fastener and the mounting part are locked together, the switch is arranged on the fastening base.

2. The mounting structure for the switch assembly and the drainage valve assembly according to Claim 1, wherein the fastener is a threaded part, and the mounting part is a threaded connecting sleeve which is in threaded connection with the threaded part.

3. The mounting structure for the switch assembly and the drainage valve assembly according to Claim 2, wherein the threaded part is in limiting fit with the body in an axial direction, a bottom wall of the cavity is provided with a through hole, and the threaded part is rotatably arranged in the through hole; an outer periphery of a top of the threaded part is provided with a convex ring, and the body is provided with a limiting part for axially limiting the threaded part; and a bottom surface of the convex ring is in abutting fit with a periphery of the through hole, and a top surface of the convex ring is in limiting fit with the limiting part.

4. The mounting structure for the switch assembly and the drainage valve assembly according to Claim 3, wherein the limiting part is a lock pin arranged in the cavity, and the lock pin is engaged with the top surface of the convex ring to axially limit the threaded part.

5. The mounting structure for the switch assembly and the drainage valve assembly according to Claim 2, wherein the threaded part is provided with a shaft hole with two through ends, the fastening base is capable of axially sliding through the shaft hole, and a side wall of the fastening base is in limiting fit with a hole wall of the shaft hole in a circumferentially direction, so that the rotation of the fastening base drives the threaded part to rotate; and the switch is arranged in the body and located on the fastening base.

6. The mounting structure for the switch assembly and the drainage valve assembly according to Claim 5, wherein a first elastic part for providing an elastic restoring force to the fastening base is arranged between the fastening base and the threaded part.

7. The mounting structure for the switch assembly and the drainage valve assembly according to Claim 6, wherein a bottom of the fastening base is provided with a snap-fit part for preventing the fastening base from being separated from the threaded part under the action of the first elastic part, and the snap-fit part is in limiting fit with a bottom of the threaded part.

8. The mounting structure for the switch assembly and the drainage valve assembly according to Claim 5, further comprising a pressing part which is slidably arranged in the threaded connecting sleeve in an axial direction and in limiting fit with the threaded connecting sleeve in a circumferential direction, wherein the pressing part comprises a pressing block, an external thread part and a directional rod, the external thread part is located between the pressing block and the directional rod, the fastening base is provided with an axially extending inner cavity, and openings are formed at two ends of the inner cavity; the directional rod passes through the inner cavity and is in limiting fit with the switch in a circumferential direction, and a cavity wall of the inner cavity is provided with an internal thread part which cooperates with the external thread part; and a mating pitch between the external thread part and the internal thread part is equal to that between the threaded part and the threaded connecting sleeve.

9. The mounting structure for the switch assembly and the drainage valve assembly according to Claim 8, wherein a second elastic part for providing an elastic restoring force to the pressing part is arranged between the pressing part and the threaded connecting sleeve.

10. The mounting structure for the switch assembly and the drainage valve assembly according to Claim 8, wherein the switch comprises a switch housing, the switch housing is provided with an extension section extending into the inner cavity, the extension section has a hollow structure, and the directional rod is sleeved in the extension section and is in limiting fit with the extension section in a circumferential direction.

11. The mounting structure for the switch assembly and the drainage valve assembly according to Claim 1, wherein the switch comprises a switch housing and an inductive element arranged in the switch housing, and the inductive element is connected to one end of a line passing through the body; alternatively, the switch comprises a switch housing, an inner cavity of the switch housing is a liquid filling cavity, and a bottom of the liquid filling cavity is connected with one end of a pipe passing through the body.

12. The mounting structure for the switch assembly and the drainage valve assembly according to Claim 1, wherein a top peripheral wall of the fastening base is provided with a plurality of circumferentially arranged anti-skid ribs, or a top end of the fastening base is provided with a driving groove which is capable of cooperating with an external tool to drive the fastening base to rotate.

13. The mounting structure for the switch assembly and the drainage valve assembly according to Claim 1, wherein the body is provided with a slot hole through which a line or pipe connected to the switch passes.

Drawing