A mounting structure of a switch assembly and a drain valve assembly

Abstract

The application provides a mounting structure of a switch assembly and a drain valve assembly, which is used for connecting a drain valve assembly arranged in a water tank and a switch assembly arranged on a water tank cover. The switch assembly comprises a body, a switch, a buckle seat and a fastener. The body is provided with a cavity with a top opening. The buckle seat is rotatably arranged in the cavity and connected with the fastener. The fastener is rotatably arranged on the body. The body is arranged on the water tank cover. The drain valve assembly is provided with a mounting portion connected with the fastener. When the buckle seat rotates, the fastener rotates relative to the body so that the fastener is locked with the mounting portion. The switch is arranged on the body. Alternatively, after the fastener is locked with the mounting portion, the switch is arranged on the buckle seat. The application has simple structure and convenient installation. The application effectively prevents the wire or pipe from being wound to cause the wire or pipe to be broken or the lock to be not tight during the locking process, and effectively ensures the fastening degree.

Description

Technical Field

[0001] This invention relates to the field of toilet drain valve technology, and particularly to an installation structure for a switch assembly and a drain valve assembly. Background Technology

[0002] With the continuous advancement of technology and people's pursuit of a high-quality life, the functions of toilet tank flush valves are becoming increasingly diverse. A flush valve generally has a switch assembly that controls drainage, which is mostly located on the toilet tank lid. To fulfill some functions of the flush valve, wiring or piping is sometimes required between the switch assembly and components inside the toilet tank. For example, sensor-operated toilet flush valves typically have a sensor module for sensor-based control. This module is located in the switch on the tank lid, while the power supply battery box for the sensor module or the electric mechanism connected to the sensor module's signal is located on the flush valve inside the tank. The two need to be electrically connected via wires. Another example is when a detergent dispenser is installed inside the tank. To facilitate adding detergent, some designs place the filling chamber at the switch assembly, allowing for direct replenishment of detergent without opening the tank lid. In this case, a replenishment line connects the switch assembly and the detergent dispenser.

[0003] However, in existing installation structures that use a threaded connection between a switch assembly and a drain valve assembly to fix the water tank cover to the water tank body, the switch body of the switch assembly typically needs to be rotated during assembly to achieve the threaded connection between the switch assembly and the drain valve assembly. Since the wiring or pipes usually pass through the switch body, with one end connected to the switch assembly and the other end connected to components inside the water tank, the wiring or pipes can become entangled during tightening. This can make it difficult to tighten the switch body and may even cause the wiring or pipes to break during tightening. Therefore, the existing installation structure using a threaded connection between the switch assembly and the drain valve assembly to fix the water tank cover to the water tank body is not suitable for situations where the switch assembly and components inside the water tank have wiring or pipe connections. It is necessary to research a new installation structure for the switch assembly and drain valve assembly that is suitable for situations where the switch assembly and components inside the water tank have wiring or pipe connections. Summary of the Invention

[0004] In existing structures where a switch assembly on a water tank cover and a drain valve assembly inside the water tank are locked together, and where wiring or pipes connect the switch assembly to components inside the water tank, problems often arise during the installation of the switch assembly and drain valve assembly, such as failure to tighten or breakage of wiring or pipes during tightening. This invention provides an installation structure for the switch assembly and drain valve assembly.

[0005] To achieve the objectives of this invention, the technical solution adopted is as follows:

[0006] An installation structure for a switch assembly and a drain valve assembly is provided for connecting a drain valve assembly disposed in a water tank and a switch assembly disposed on a water tank cover. The switch assembly includes a body, a switch, a retainer, and a fastener. The body has a cavity with an open top. The retainer is rotatably disposed in the cavity and connected to the fastener. The fastener is rotatably disposed on the body. The body is disposed on the water tank cover. The drain valve assembly has a mounting part that connects and cooperates with the fastener. When the retainer rotates, it drives the fastener to rotate relative to the body so that the fastener is locked to the mounting part. The switch is disposed on the body, or, after the fastener is locked to the mounting part, the switch is disposed on the retainer.

[0007] Preferably, the fastener is a threaded component, and the mounting part is a threaded connecting sleeve that is threadedly connected to the threaded component.

[0008] Preferably, the threaded component is axially positioned and fitted with the body, the bottom wall of the cavity is provided with a through hole, the threaded component is rotatably disposed in the through hole, the outer periphery of the top of the threaded component is provided with a convex ring, the body is provided with a limiting part for axially limiting the threaded component, the bottom surface of the convex ring abuts against the periphery of the through hole, and the top surface of the convex ring is limited and fitted with the limiting part.

[0009] Preferably, the limiting part is a buckle provided in the cavity, and the buckle is fastened to the top surface of the convex ring to limit the axial movement of the threaded part.

[0010] Preferably, the threaded component has a shaft hole that passes through both ends, and the buckle can be axially slidably inserted into the shaft hole. The side wall of the buckle is circumferentially limited to the shaft hole wall so that the threaded component can be rotated when the buckle is rotated. The switch is located in the body and on the buckle.

[0011] Preferably, a first elastic element is provided between the buckle and the threaded component to provide an elastic restoring force to the buckle.

[0012] Preferably, the bottom of the buckle is provided with a buckle to prevent the buckle from disengaging from the threaded member under the action of the first elastic member, and the buckle is engaged with the bottom of the threaded member for limiting.

[0013] Preferably, it further includes a pressing member, which is axially slidably disposed within the threaded connecting sleeve and circumferentially limited to the threaded connecting sleeve. The pressing member includes a pressing block, an external threaded portion, and a directional rod. The external threaded portion is located between the pressing block and the directional rod. The fastener has an axially extending inner cavity with openings at both ends. The directional rod passes through the inner cavity and circumferentially limited to the switch. The inner cavity wall has an internal threaded portion that mates with the external threaded portion. The pitch of the mating between the external threaded portion and the internal threaded portion is equal to the pitch of the mating between the threaded component and the threaded connecting sleeve.

[0014] Preferably, a second elastic element is provided between the pressing element and the threaded connecting sleeve to provide an elastic restoring force to the pressing element.

[0015] Preferably, the switch includes a switch housing, the switch housing has an extension section extending into the inner cavity, the extension section is a hollow structure, and the directional rod is sleeved in the extension section and circumferentially limited by the extension section.

[0016] Preferably, the switch includes a switch housing and a sensing element disposed within the switch housing, the sensing element being connected to one end of a line passing through the body; or, the switch includes a switch housing, the inner cavity of the switch housing forming a liquid filling chamber, the bottom of the liquid filling chamber being connected to one end of a pipe passing through the body.

[0017] Preferably, the top peripheral wall of the buckle is provided with a plurality of circumferentially arranged anti-slip ribs, or the top of the buckle is provided with a drive groove, and the buckle is driven to rotate by an external fixture cooperating with the drive groove.

[0018] Preferably, the body is provided with slots through which lines or pipes connected to the switch can pass.

[0019] The beneficial effects of this invention are as follows:

[0020] This invention provides an installation structure for a switch assembly and a drain valve assembly. The switch assembly includes a body, a switch, a retainer, and a fastener. The retainer is rotatably mounted on the body and connected to the fastener. The fastener is rotatably mounted on the body. The body is mounted on a water tank cover. When the retainer rotates, it causes the fastener to rotate relative to the body, locking the fastener to the mounting portion on the drain valve assembly, thereby connecting the drain valve assembly and the switch assembly. By mounting the switch on the body, the switch does not rotate with the retainer, effectively preventing wire or pipe entanglement during locking and ensuring a secure connection. Alternatively, the fastener can be locked to the mounting portion before the switch is mounted on the retainer, instead of the switch and retainer being integrally formed. Therefore, the switch also does not rotate with the retainer. This simple structure facilitates installation and effectively prevents wire or pipe entanglement during locking, while also ensuring a secure connection. Attached Figure Description

[0021] Figure 1 : An overall exploded view of the present invention;

[0022] Figure 2 : Overall assembly diagram of the present invention;

[0023] Figure 3 : A schematic diagram of the present invention assembled with a water tank;

[0024] Figure 4 : A cross-sectional view of the body, fastener, and threaded component of the present invention in conjunction;

[0025] Figure 5 : A perspective view of the body, fastener, and threaded component of the present invention in conjunction;

[0026] Figure 6 : A perspective view of the main body of the invention;

[0027] Figure 7 : A schematic diagram of the fit between the threaded connecting sleeve, the pressing element, and the second elastic element of the present invention;

[0028] Figure 8 : A bottom view of the switch housing of Embodiment 1 of the present invention;

[0029] Figure 9 : A schematic diagram of the installation process of this invention;

[0030] Figure 10 : A diagram showing the initial engagement state of the threaded component and the threaded connecting sleeve of this invention;

[0031] Figure 11 : A diagram showing the state of the threaded component and the threaded connecting sleeve in place according to the present invention;

[0032] Figure 12 : A state diagram of the push switch and the latch of this invention;

[0033] Figure 13 Cross-sectional view of Embodiment 2 of the present invention;

[0034] Figure 14 : A schematic diagram of the liquid addition process in Embodiment 2 of the present invention;

[0035] In the diagram: 10. Drain valve assembly; 11. Threaded connecting sleeve; 12. Electric drive mechanism; 13. Battery box; 14. Drain valve; 141. Starting assembly; 20. Switch; 21. Switch housing; 211. Extension section; 22. Sensing element; 23. Decorative panel; 24. Liquid filling chamber; 25. Decorative cover; 30. Water tank; 31. Water tank cover; 40. Body; 41. Through hole; 42. Limiting part; 43. Slot; 50. Buckle; 51. Snap fastener; 52. Internal thread part; 53. Anti-slip rib; 60. Threaded part; 61. Raised ring; 70. First elastic element; 80. Pressing element; 81. Pressing block; 82. External thread part; 83. Directional rod; 90. Second elastic element; 100. Liquid storage tank; 110. Wire; 120. Pipeline. Detailed Implementation

[0036] In existing structures where a switch assembly on the water tank cover is locked to a drain valve assembly inside the water tank, problems can easily arise during installation when the switch assembly is connected to components inside the water tank by wiring or piping, leading to issues such as the switch assembly failing to tighten or the wiring or piping breaking during tightening. Therefore, this invention proposes a new solution. For greater clarity, the invention will be described in detail below with reference to the accompanying drawings.

[0037] Example 1:

[0038] See Figure 1-3 An installation structure for a switch assembly and a drain valve assembly is provided for connecting a drain valve assembly 10 disposed in a water tank 30 and a switch assembly disposed on a water tank cover 31.

[0039] The drain valve assembly 10 includes an electric drive mechanism 12, a battery box 13, and a drain valve 14. The electric drive mechanism 12 controls the drain valve 14 to open and drain water. The battery box 13 is located on one side of the drain valve 14 and provides power to the electric drive mechanism 12. A switch assembly connects the electric drive mechanism 12 and the battery box 13 via a wire 110. The battery box 13 supplies power to the switch assembly, which controls the opening and closing of the electric drive mechanism 12. The wire 110 consists of two sections. One end of one section is connected to the switch assembly, and one end of the other section is connected to both the electric drive mechanism 12 and the battery box 13. The other ends of the two sections are connected via a connector, facilitating the connection between the switch assembly and the electric drive mechanism 12 and the battery box 13.

[0040] See Figure 1-6 The switch assembly includes a body 40, a switch 20, a latch 50, and a fastener. The body 40 has a cavity with an opening at the top, the latch 50 is rotatably disposed in the cavity and connected to the fastener, and the fastener is rotatably disposed on the body 40.

[0041] The main body 40 is embedded in the water tank cover 31. The top of the drain valve assembly 10 is provided with a mounting part that is connected and cooperates with the fastener. When the buckle 50 rotates, it drives the fastener to rotate relative to the main body 40 so that the fastener is locked and connected with the mounting part. After the fastener is locked and connected with the mounting part, the switch 20 is placed on the buckle 50.

[0042] In this embodiment, the fastener is a threaded component 60, and the mounting part is a threaded connecting sleeve 11 that is threadedly connected to the threaded component 60. Preferably, the threaded component 60 has external threads, and correspondingly, the threaded connecting sleeve 11 has internal threads.

[0043] To facilitate easier and simpler installation, preferably, the threaded component 60 is axially positioned and fitted with the body 40. A through hole 41 is provided on the bottom wall of the cavity, and the threaded component 60 is rotatably positioned within the through hole 41. A raised ring 61 is provided on the outer periphery of the top of the threaded component 60, and the body 40 is provided with a limiting part 42 for axially limiting the threaded component 60. The bottom surface of the raised ring 61 abuts against the periphery of the through hole 41, and the top surface of the raised ring 61 is fitted with the limiting part 42. Specifically, the limiting part 42 is a retaining foot disposed in the cavity, which engages with the top surface of the raised ring 61 to axially limit the threaded component 60. In this embodiment, the threaded component 60 extends downwards out of the through hole 41 to engage with the threaded connecting sleeve 11. Alternatively, the threaded component 60 may not extend out of the through hole 41, but the threaded connecting sleeve 11 may be inserted into the through hole 41 to engage with the threaded component 60.

[0044] In this embodiment, to enrich the functionality of switch 20, switch 20 also functions as a mechanical button. Pressing switch 20 can activate drain valve 14 to open for drainage, thus allowing switch 20 to both electrically and manually open drain valve 14. Specifically, threaded component 60 has a through-hole at both ends. The retainer 50 is axially slidably inserted into the through-hole. The sidewall of retainer 50 is circumferentially limited to the wall of the through-hole so that when retainer 50 rotates, it can drive threaded component 60 to rotate. That is, retainer 50 can slide up and down relative to threaded component 60 in the through-hole but cannot rotate relative to threaded component 60 in the through-hole. Switch 20 is located inside body 40 and on retainer 50. When switch 20 is pressed, switch 20 activates the actuation component 141 of drain valve 14 via retainer 50 to achieve drainage. Actuation component 141 may include a lifting rod and a pull rod, etc.

[0045] A first elastic element 70 is provided between the buckle 50 and the threaded part 60 to provide an elastic restoring force to the buckle 50. In this embodiment, the first elastic element 70 is a spring, which is sleeved outside the buckle 50, making the structure simple and compact.

[0046] The bottom of the buckle seat 50 is provided with a buckle 51 to prevent the buckle seat 50 from disengaging from the shaft hole of the threaded member 60 under the action of the first elastic member 70. The buckle 51 is in a limiting fit with the bottom of the threaded member 60. In this embodiment, the buckle 51 is a "C" shaped buckle, and the bottom of the buckle seat 50 is provided with a buckle groove for installing the "C" shaped buckle.

[0047] See Figure 1 and Figure 7 The installation structure in this embodiment also includes a pressing member 80. The pressing member 80 is axially slidably disposed in the threaded connecting sleeve 11 and the pressing member 80 is circumferentially limited to the threaded connecting sleeve 11. That is, the pressing member 80 can slide axially relative to the threaded connecting sleeve 11 in the threaded connecting sleeve 11 but cannot rotate relative to the threaded connecting sleeve 11.

[0048] The pressing member 80 includes a pressing block 81, an external threaded portion 82, and a directional rod 83. The external threaded portion 82 is located between the pressing block 81 and the directional rod 83. The pressing block 81, the external threaded portion 82, and the directional rod 83 are integrally formed.

[0049] The buckle 50 has an axially extending inner cavity with openings at both ends. The guide rod 83 passes through the inner cavity and is circumferentially limited to the switch 20. The inner cavity wall has an internal thread 52 that mates with the external thread 82. The pitch of the mating between the external thread 82 and the internal thread 52 is equal to the pitch of the mating between the threaded part 60 and the threaded connecting sleeve 11, so that the threaded connection between the external thread 82 and the internal thread 52 will not interfere with the threaded connection between the threaded part 60 and the threaded connecting sleeve 11.

[0050] A second elastic element 90 is provided between the pressing element 80 and the threaded connecting sleeve 11 to provide an elastic restoring force to the pressing element 80. In this embodiment, the second elastic element 90 is a tension spring. The pressing block 81 of the pressing element 80 is in transmission engagement with the actuation assembly 141 of the drain valve 14.

[0051] See Figure 8 The switch 20 includes a switch housing 21, which has an extension section 211 extending into its inner cavity. The extension section 211 is hollow, and a directional rod 83 is sleeved within the extension section 211 and engages with it circumferentially. This hollow structure is a flat hole that mates with the directional rod. The engagement of the directional rod with the flat hole allows for the orientation of the switch housing 21, preventing interference caused by uncertain orientation of the wires 110 extending from the switch housing 21, which could affect the normal operation of the drain valve assembly 10.

[0052] See Figure 1 In this embodiment, the switch assembly is an inductive switch assembly. The switch 20 also includes a sensing element 22 disposed within the switch housing 21. The sensing element 22 can be sealed within the switch housing 21 by potting or sealing with a sealing material. The sensing 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-filtering material, and the sensing element 22 is not limited to infrared sensing or capacitive sensing, etc. The sensing element 22 sends a sensing signal to the electric drive mechanism 12 through the wire 110, thereby controlling the electric drive mechanism 12 to open so that the drain valve 14 can drain water. The electric drive mechanism 12 can be driven by a motor or the like.

[0053] See Figure 1 The outer wall of the switch housing 21 is also provided with a decorative panel 23, which is a light-transmitting panel.

[0054] See Figure 1 and Figure 5 The top periphery of the buckle 50 is provided with several circumferentially arranged anti-slip ribs 53, which makes it easy to rotate the buckle 50 directly by hand; or the top of the buckle 50 is provided with a drive groove, which is used to drive the buckle 50 to rotate by cooperating with an external fixture (such as a screwdriver).

[0055] The main body 40 is also provided with a slot 43 for the line (wire 110) connected to the switch to pass through.

[0056] The simplified installation and disassembly process of this invention is as follows:

[0057] See Figure 9 and Figure 10 During installation, the drain valve 14 is fixed to the bottom wall of the water tank 30, and the body 40 is embedded in the water tank cover 31. A section of wire 110 connected to the sensing element 22 passes through the slot 43 and is connected to another section of wire 110 led out from the electric drive mechanism 12 and the battery box 13 through a plug connector. At this time, the switch 20 is not installed on the buckle 50, so that the buckle 50 can be rotated directly.

[0058] Next, rotating the retaining seat 50 causes the threaded component 60 to rotate relative to the body 40, locking the threaded component 60 into the threaded connecting sleeve 11. Simultaneously, the external thread 82 on the pressing component 80 and the internal thread 52 of the retaining seat 50 are synchronously threaded together, thereby locking the switch assembly and the drain valve assembly 10. At this time, as... Figure 11 As shown, since the switch assembly is mounted on the water tank cover 31 and the drain valve assembly 10 is mounted on the water tank 30, the water tank cover 31 and the water tank 30 are locked together. Finally, the switch 20 is moved along... Figure 9The arrow pointing in the direction is inserted into the inner cavity of the buckle 50 and engages with the guide rod 83 for installation and fixation. When it is necessary to open the drain valve 14 for drainage, simply place your hand on the switch 20 so that the sensing element 22 detects the hand, thereby realizing sensor-based drainage control.

[0059] See Figure 12 When it is necessary to mechanically open the drain valve 14 for drainage, simply press the switch 20. The switch 20 moves down and drives the starting component 141 of the drain valve 14 through the buckle 50 and the pressure member 80, thereby causing the starting component 141 to open the drain valve 14 for drainage.

[0060] During disassembly, first remove the switch 20 from the retaining seat 50, then rotate the retaining seat 50 in the opposite direction to the locking direction. The retaining seat 50 causes the threaded part 60 to separate from the threaded connecting sleeve 11. At the same time, the external thread 82 on the pressing part 80 and the internal thread 52 of the retaining seat 50 separate synchronously, thereby separating the switch assembly from the drain valve assembly 10, and finally achieving disassembly.

[0061] In other embodiments, the switch 20 can also be mounted on the body 40. The switch 20 can be fixed to the body 40 by snap-fit, screw-fit, or welding. Alternatively, the switch 20 can be integrally formed and fixedly connected to the body 40. Since the body 40 does not rotate with the buckle 50 during assembly, the switch 20 will not rotate during the assembly process, thereby effectively avoiding the problem of tangling of the lines or pipes connected to the switch 20.

[0062] Example 2:

[0063] See Figure 13 and Figure 14 In this embodiment, the switch 20 does not have a sensing element 22, and the drain valve assembly 10 does not have an electric drive mechanism 12 electrically connected to the sensing element 22. The inner cavity of the switch housing 21 in this embodiment forms a liquid filling chamber 24. The bottom of the liquid filling chamber 24 is connected to one end of a pipe 120 passing through the body 40, and the other end of the pipe 120 is connected to a storage tank 100, which is fixed to one side of the drain valve 14. A decorative cover 25 is provided on the top of the switch 20. Removing the decorative cover 25 allows liquid to be added to the liquid filling chamber 24, and the liquid in the liquid filling chamber 24 then flows into the storage tank 100 through the pipe 120. The installation structure of this invention prevents the pipe 120 from becoming tangled during installation.

[0064] The other installation structures, connection relationships and working principles are the same as in Example 1, so they will not be described again.

[0065] The installation structure provided by this invention can be applied to the field of toilet drain valve technology, and is used to connect the drain valve assembly 10 and the switch assembly. This invention has a simple structure, is easy to install, effectively prevents the wires or pipes from getting tangled during the locking process, and effectively ensures the tightness.

[0066] The above embodiments are only used to explain the technical solutions of the present invention and not to limit it. Although the above embodiments have provided specific descriptions of the present invention, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications and equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A mounting structure for a switch assembly and a drain valve assembly, used to connect a drain valve assembly disposed inside a water tank and a switch assembly disposed on a water tank cover, characterized in that: The switch assembly includes a body, a switch, a buckle, and a fastener. The body has a cavity with an open top. The buckle is rotatably disposed in the cavity and connected to the fastener. The fastener is rotatably disposed on the body. The body is disposed on the water tank cover. The drain valve assembly has a mounting part that connects and mates with the fastener. When the buckle rotates, it drives the fastener to rotate relative to the body so that the fastener is locked to the mounting part. The switch is disposed on the body, or, after the fastener is locked to the mounting part, the switch is disposed on the buckle. The fastener is a threaded component, and the mounting part is a threaded connection sleeve that is threadedly connected to the threaded component. The threaded component has a shaft hole that passes through both ends. The buckle can slide axially through the shaft hole. The side wall of the buckle is circumferentially limited to the shaft hole wall so that the threaded component can be rotated when the buckle rotates. The switch is located in the body and on the buckle. It also includes a pressing member, which is axially slidably disposed within the threaded connecting sleeve and circumferentially limited to the threaded connecting sleeve. The pressing member includes a pressing block, an external threaded portion, and a directional rod. The external threaded portion is located between the pressing block and the directional rod. The fastener has an axially extending inner cavity with openings at both ends. The directional rod passes through the inner cavity and is circumferentially limited to the switch. The inner cavity wall has an internal threaded portion that mates with the external threaded portion. The pitch of the mating between the external threaded portion and the internal threaded portion is equal to the pitch of the mating between the threaded component and the threaded connecting sleeve.

2. The mounting structure of the switch assembly and drain valve assembly according to claim 1, characterized in that: The threaded component is axially positioned and fitted with the body. The bottom wall of the cavity is provided with a through hole. The threaded component is rotatably disposed in the through hole. A convex ring is provided on the outer periphery of the top of the threaded component. The body is provided with a limiting part for axially positioning the threaded component. The bottom surface of the convex ring abuts against the periphery of the through hole, and the top surface of the convex ring is positioned and fitted with the limiting part.

3. The mounting structure of the switch assembly and drain valve assembly according to claim 2, characterized in that: The limiting part is a buckle provided in the cavity, and the buckle is fastened to the top surface of the convex ring to limit the axial movement of the threaded part.

4. The mounting structure of the switch assembly and drain valve assembly according to claim 1, characterized in that: A first elastic element is provided between the buckle and the threaded component to provide an elastic restoring force to the buckle.

5. The mounting structure of the switch assembly and drain valve assembly according to claim 4, characterized in that: The bottom of the buckle is provided with a buckle to prevent the buckle from disengaging from the threaded component under the action of the first elastic element, and the buckle is engaged with the bottom of the threaded component for limiting.

6. The mounting structure of the switch assembly and drain valve assembly according to claim 1, characterized in that: A second elastic element is provided between the pressing element and the threaded connecting sleeve to provide elastic restoring force to the pressing element.

7. The mounting structure of the switch assembly and drain valve assembly according to claim 1, characterized in that: The switch includes a switch housing, the switch housing has an extension section extending into the inner cavity, the extension section is a hollow structure, and the directional rod is sleeved in the extension section and cooperates with the circumferential limiting of the extension section.

8. The mounting structure of the switch assembly and drain valve assembly according to claim 1, characterized in that: The switch includes a switch housing and a sensing element disposed within the switch housing, the sensing element being connected to one end of a line passing through the body; or, the switch includes a switch housing, the inner cavity of the switch housing forming a liquid filling chamber, the bottom of the liquid filling chamber being connected to one end of a pipe passing through the body.

9. The mounting structure of the switch assembly and drain valve assembly according to claim 1, characterized in that: The buckle has several circumferentially arranged anti-slip ribs on its top peripheral wall, or the buckle has a drive groove at its top, which is used to drive the buckle to rotate by an external fixture.

10. The mounting structure of the switch assembly and drain valve assembly according to claim 1, characterized in that: The main body is provided with slots through which lines or pipes connected to the switch can pass.

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