A waterproof and dustproof touch switch

Abstract

The present invention relates to the technical field of electric switches, and specifically to a waterproof and dustproof touch switch, comprising a shell, a first contact, a second contact, a first metal spring and a plastic top column. A first chamber is provided inside the shell, the first chamber is isolated from the outside of the shell, the pressure of the air pressure body in the first chamber is greater than the standard atmospheric pressure, and the first contact is provided at the lower part of the shell. The present invention makes the air pressure inside the first chamber greater than the standard atmospheric pressure. When the plastic top column is reset, the elastic force of the first metal spring and the gas pressure inside the first chamber work together to move the plastic top column upward to reset. Compared with the existing touch switch, the first metal spring in the touch switch of the present invention is less subject to resistance when rebounding and resetting, and is easier to completely reset to the initial state. Therefore, the service life of the first metal spring is longer, and it is not easy to cause poor contact between the first contact and the second contact due to elastic fatigue of the first metal spring.

Description

Technical Field

[0001] The invention relates to the technical field of electric switches, in particular to a waterproof and dustproof touch switch. Background Art

[0002] A touch switch, also known as a touch switch or a light-press switch, is an electronic switch that can be triggered by slight pressure. It is widely used in various electronic products and equipment, and is favored for its small size, reliability and easy operation. A touch switch usually includes a metal cover, a plastic top column, a metal spring, a first contact, a second contact and a shell. The metal cover is arranged at the upper end of the shell, the first contact and the second contact are arranged at intervals at the lower part of the shell, the metal spring is arranged inside the shell, and the first contact always keeps in contact with the outer side of the metal spring, the plastic top column passes through the metal cover and is slidably connected in the shell, the metal spring is also arranged in the shell, and the metal spring is located above the second contact and below the plastic top column. When the staff presses the plastic top column downward, the center part of the metal spring is recessed downward and contacts the second contact. At this time, the first contact and the second contact are electrically connected through the metal spring, and the switch is in a pass state. When the staff no longer presses down on the plastic top column, the metal spring resets under its own elastic force and pushes the plastic top column to its initial position. At this time, the first contact and the second contact are no longer electrically connected through the metal spring, and the switch returns to the off-circuit state.

[0003] The existing touch switch has the following problems when in use: since the disconnection of the first contact and the second contact is achieved by relying on the elastic force of the metal spring, and the temperature of the metal spring is relatively high when the first contact and the second contact are connected, the metal spring is prone to elastic fatigue after being used for a period of time, causing poor contact between the first contact and the second contact, which will cause the touch switch to be unable to open or close normally, affecting the normal use of the touch switch. Summary of the invention

[0004] Based on this, it is necessary to provide a waterproof and dustproof touch switch to address the problems of the current touch switches, so as to solve the problem that the metal spring is prone to poor contact between the first contact and the second contact due to elastic fatigue after being used for a period of time.

[0005] The above purpose is achieved through the following technical solutions:

[0006] A waterproof and dustproof touch switch comprises:

[0007] A shell, wherein a first chamber is provided inside the shell, the first chamber is isolated from the outside of the shell, and the air pressure inside the first chamber is greater than the atmospheric pressure;

[0008] A first contact, the first contact is arranged at the lower part of the housing;

[0009] A second contact point, which is also disposed at the lower portion of the housing and is spaced apart from the first contact point;

[0010] A first metal spring, the first metal spring is disposed in the first cavity, the first metal spring is hemispherical and the center of the sphere is located below the hemispherical surface, and the annular outer side surface of the first metal spring is fixedly connected to the first contact point;

[0011] A plastic top column, the lower part of which is slidably arranged in the first cavity, and the lower end of which is located above the first metal spring.

[0012] In one embodiment, an inner ring groove is provided at the lower part of the plastic top column, a second metal spring is provided at the lower end of the inner ring groove, the second metal spring and the inner ring groove surround and form a second chamber, and the second chamber can be connected to the outside.

[0013] In one embodiment, a first connecting hole is opened inside the plastic top column, and the first connecting hole is an inverted L-shape. One end of the first connecting hole passes through the side of the plastic top column, and the other end of the first connecting hole passes through the lower end surface of the plastic top column.

[0014] In one embodiment, a filter screen is provided at one end of the first communication hole that passes through the side of the plastic top column.

[0015] In one of the embodiments, a plurality of sealing rings are provided at intervals at the sliding connection between the plastic top column and the shell, and the hardness of the plurality of sealing rings increases gradually from top to bottom.

[0016] In one embodiment, a third chamber is formed at the upper portion of the shell, a second communication port is formed at the bottom of the third chamber, the second communication port connects the third chamber and the first chamber, a first one-way valve is provided in the second communication port, and the first one-way valve restricts the air in the first chamber from entering the third chamber through the second communication port;

[0017] A first top column is arranged at the upper end of the plastic top column. When the first top column abuts against the first one-way valve, the first one-way valve opens, and the air in the third chamber enters into the first chamber.

[0018] In one embodiment, a third connecting port is opened on one side of the third chamber close to the first connecting port, and a second one-way valve is provided in the third connecting port. The second one-way valve restricts the air in the third chamber from entering the second chamber through the third connecting port and the first connecting hole.

[0019] In one embodiment, the shell includes an upper mounting frame, a lower mounting frame and an outer insulating sleeve, the upper mounting frame and the lower mounting frame are both located inside the outer insulating sleeve, and the upper mounting frame and the lower mounting frame are both abutted against the outer insulating sleeve.

[0020] In one embodiment, a first slot is formed on one side of the lower mounting frame, and the first contact is snapped into the first slot. A second slot is formed on the opposite side of the lower mounting frame, and the second contact is snapped into the second slot.

[0021] In one embodiment, a first wiring hole and a second wiring hole are formed at the lower portion of the lower mounting frame, the first wiring hole is connected to the first card slot, and the second wiring hole is connected to the second card slot.

[0022] The beneficial effects of the present invention are:

[0023] 1. The present invention makes the air pressure inside the first chamber greater than the standard atmospheric pressure. When the plastic top column is reset, the elastic force of the first metal spring and the gas pressure inside the first chamber work together to move the plastic top column upward to reset. Compared with the existing touch switch, the first metal spring in the touch switch of the present invention encounters less resistance when rebounding and is easier to completely reset to the initial state. Therefore, the service life of the first metal spring is longer, and it is not easy to cause poor contact between the first contact and the second contact due to elastic fatigue of the first metal spring.

[0024] 2. The present invention is provided with a first chamber, a second chamber and a third chamber. When the sealing ring is damaged and the air pressure inside the first chamber and the third chamber is reduced, the pressure in the first chamber and the third chamber can be replenished by turning on / off the touch switch, so that the air pressure inside the first chamber and the third chamber can be maintained at a level greater than the standard atmospheric pressure, thereby preventing dust and water vapor from entering the first chamber and the third chamber through the damaged position of the sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is an overall schematic diagram of a waterproof and dustproof touch switch of the present invention;

[0026] Figure 2 This is an exploded view of a waterproof and dustproof touch switch of the present invention;

[0027] Figure 3 A side view of a waterproof and dustproof touch switch of the present invention;

[0028] Figure 4 for Figure 3 Middle AA section view;

[0029] Figure 5 A schematic diagram of a circuit conduction state of a waterproof and dustproof touch switch of the present invention;

[0030] Figure 6 for Figure 4 Schematic diagram of the enlarged structure at B in the middle;

[0031] Figure 7for Figure 5 Schematic diagram of the enlarged structure at C in the middle.

[0032] in:

[0033] 100, housing; 110, first chamber; 111, first top column; 120, third chamber; 121, second communication port; 122, first one-way valve; 123, third communication port; 124, second one-way valve; 130, upper mounting frame; 140, lower mounting frame; 141, first wiring hole; 142, second wiring hole; 150, outer insulating sleeve; 160, annular rubber sheet;

[0034] 210, first contact point; 220, second contact point;

[0035] 300, a first metal dome;

[0036] 400, plastic top column; 410, inner ring groove; 420, second metal spring; 430, second chamber; 440, first connecting hole; 450, filter screen;

[0037] 500. Sealing ring. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0039] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0040] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0041] like Figure 1-Figure 7 As shown, a waterproof and dustproof touch switch includes a shell 100, a first contact 210, a second contact 220, a first metal spring 300 and a plastic top column 400. A first chamber 110 is provided inside the shell 100, the first chamber 110 is isolated from the outside of the shell 100, the pressure of the air pressure body in the first chamber 110 is greater than the standard atmospheric pressure, the first contact 210 is provided at the lower part of the shell 100, the second contact 220 is also provided at the lower part of the shell 100, and the second contact 220 and the first contact 210 are arranged at intervals, the first metal spring 300 is provided in the first chamber 110, the first metal spring 300 is hemispherical and the center of the sphere is located below the hemispherical surface, the annular outer side surface of the first metal spring 300 is fixedly connected to the first contact 210, the lower part of the plastic top column 400 is slidably provided in the first chamber 110, and the lower end of the plastic top column 400 is located above the first metal spring 300.

[0042] When the circuit needs to be turned on, the staff presses the button of the plastic top column 400 downward, and the plastic top column 400 slides into the first chamber 110. Then, the lower end of the plastic top column 400 pushes the center of the first metal dome 300 downward after overcoming the gas pressure inside the first chamber 110 and the elastic force of the first metal dome 300. At this time, the first metal dome 300 is deformed by the force, so that the center of the first metal dome 300 moves downward until the center of the first metal dome 300 contacts the second contact 220. At this time, the first contact 210 and the second contact 220 are electrically connected through the first metal dome 300, and the circuit is in a turned-on state.

[0043] When the circuit needs to be disconnected, the staff releases the plastic top column 400. At this time, the plastic top column 400 moves upward under the combined action of gas pressure and the elastic force of the first metal spring 300, so that the first contact 210 and the second contact 220 are no longer electrically connected through the first metal spring 300, and the circuit is disconnected.

[0044] It can be understood that when the circuit needs to be disconnected, the plastic top column 400 moves upward to reset. At this time, the elastic force of the first metal dome 300 and the gas pressure inside the first chamber 110 work together to move the plastic top column 400 upward to reset. Therefore, compared with the existing touch switch, the first metal dome 300 in the touch switch of the present invention is less resistant when rebounding and resetting, and it is easier to completely reset to the initial state. Therefore, the service life of the first metal dome 300 in the present invention is longer, and it is not easy to cause poor contact between the first contact 210 and the second contact 220 due to elastic fatigue of the first metal dome 300. In addition, even if the first metal dome 300 is damaged by elastic fatigue to a certain extent, resulting in a decrease in its elastic deformation, under the joint action of the elastic force of the first metal dome 300 and the pressure inside the first chamber 110, the first metal dome 300 can still push the plastic top column 400 to move upward so that the first metal dome 300 is out of contact with the second contact 220, thereby further extending the service life of the touch switch and ensuring the normal use of the touch switch for a long time.

[0045] In addition, by making the air pressure inside the first chamber 110 greater than the standard atmospheric pressure, the following advantages are achieved: first, when the staff member presses the plastic top column 400 downward, the first metal spring 300 is not in a passage state. At this time, the temperature of the first metal spring 300 itself is relatively low, and the air pressure inside the first chamber 110 is relatively low. At this time, the resistance of the gas inside the first chamber 110 to the staff member pressing the plastic top column 400 downward is relatively small, and will not affect the normal use of the touch switch; second, when the circuit is passed, the current flows through the first metal spring 300, and the temperature of the first metal spring 300 increases, so the air pressure inside the first chamber 110 increases. When the plastic top column 400 is elastically reset, the internal gas of the first chamber 110 has a greater pushing force on the plastic top column 400, so the resistance encountered by the first metal spring 300 when it is reset is also smaller.

[0046] In a further embodiment, Figure 4 and Figure 5 As shown, an inner ring groove 410 is provided at the lower part of the plastic top column 400, and a second metal spring 420 is provided at the lower end of the inner ring groove 410. The second metal spring 420 and the inner ring groove 410 surround and form a second chamber 430, and the second chamber 430 can be connected to the outside. In order to make the second chamber 430 connected to the atmospheric pressure, specifically, a first connecting hole 440 is provided inside the plastic top column 400. The first connecting hole 440 is an inverted L-shape, one end of the first connecting hole 440 passes through the side of the plastic top column 400, and the other end of the first connecting hole 440 passes through the lower end surface of the plastic top column 400.

[0047] During use, when the plastic top column 400 moves downward, the volume of the first chamber 110 decreases, and the air pressure inside the first chamber 110 increases. Therefore, the pressure of the gas inside the first chamber 110 on the second metal dome 420 increases. When the pressure of the gas inside the first chamber 110 on the second metal dome 420 is greater than the threshold value of the elastic deformation of the second metal dome 420, as the gas pressure inside the first chamber 110 continues to increase, the second metal dome 420 is forced to arch upward. At this time, the air inside the second chamber 430 is squeezed out, so the air inside the second chamber 430 is discharged outward through the first connecting hole 440, and the end of the first connecting hole 440 away from the second chamber 430 is located on the side of the plastic top column 400 (that is, the sliding connection between the plastic top column 400 and the shell 100). Therefore, the air squeezed out of the second chamber 430 can clean the dust at the sliding connection between the plastic top column 400 and the shell 100 to prevent dust from entering the shell 100.

[0048] It should be added that, since the pressure inside the first chamber 110 is greater than the standard atmospheric pressure outside, dust from the outside is not easy to enter the first chamber 110. Similarly, making the pressure inside the first chamber 110 greater than the standard atmospheric pressure outside can also make it difficult for water vapor from the outside to enter the first chamber 110, thereby achieving a better waterproof and moisture-proof effect.

[0049] In a further embodiment, Figure 7 As shown, a filter screen 450 is disposed at one end of the first communication hole 440 that passes through the side of the plastic top column 400 .

[0050] The filter 450 is provided to filter the air entering the first connecting hole 440 to prevent dust from entering the second chamber 430 .

[0051] In a further embodiment, Figure 5 As shown, a plurality of sealing rings 500 are arranged at intervals at the sliding connection between the plastic top column 400 and the housing 100 , and the hardness of the plurality of sealing rings 500 increases gradually from top to bottom.

[0052] The purpose of providing multiple sealing rings 500 is to enhance the sealing performance and improve the waterproof and dustproof effect, so that the hardness of the multiple sealing rings 500 gradually increases from top to bottom, so that the pressure can be gradually released to avoid stress concentration caused by sudden changes.

[0053] In a further embodiment, Figure 5-Figure 7As shown, the upper part of the housing 100 is provided with a third chamber 120, the bottom of the third chamber 120 is provided with a second communication port 121, the second communication port 121 connects the third chamber 120 and the first chamber 110, the second communication port 121 is provided with a first check valve 122, the first check valve 122 restricts the air in the first chamber 110 from entering the third chamber 120 through the second communication port 121, the upper end of the plastic top column 400 is provided with a first top column 111, when the first top column 111 abuts against the first check valve 122, the first check valve 122 opens, and the air in the third chamber 120 enters the first chamber 110. The third chamber 120 is provided with a third communication port 123 on one side close to the first communication port, the third communication port 123 is provided with a second check valve 124, the second check valve 124 restricts the air in the third chamber 120 from entering the second chamber 430 through the third communication port 123 and the first communication hole 440.

[0054] When the touch switch is used for the first time, the air pressure inside the first chamber 110, the third chamber 120 and the second chamber 430 are all standard atmospheric pressure. After pressing the plastic top column 400 downward, the internal volume of the first chamber 110 decreases and the air pressure inside the first chamber 110 increases. When the air pressure inside the first chamber 110 increases to a threshold value greater than the elastic deformation of the second metal dome 420, the second metal dome 420 arches upward, the internal volume of the second chamber 430 decreases, and the air pressure inside the second chamber 430 increases. As the plastic top column 400 continues to move downward, when the plastic top column 400 moves to the first connecting hole 440 and connects with the third chamber 120, the air inside the second chamber 430 enters the third chamber 120 through the first connecting hole 440 and the filter 450, so that the air pressure in the third chamber 120 is greater than the standard atmospheric pressure. After the plastic top column 400 is elastically reset, the first top column 111 pushes the first check valve 122 open, so that the third chamber 120 is connected to the first chamber 110. At this time, the air pressure inside the first chamber 110 increases to be greater than the standard atmospheric pressure. As the touch switch is used repeatedly, the air pressure inside the first chamber 110 gradually increases. When the air pressure inside the first chamber 110 increases to a certain preset value, when the second chamber 430 is connected to the external standard atmospheric pressure, the second metal spring 420 is in an upwardly arched state. In this case, when the plastic top column 4 When the plastic top column 400 moves downward, the air pressure inside the first chamber 110 continues to increase, but the elasticity of the second metal dome 420 is not enough to make the air pressure inside the second chamber 430 greater than the air pressure inside the third chamber 120. Therefore, when the second chamber 430 is connected to the third chamber 120 through the first connecting hole 440, the air pressure inside the second chamber 430 is less than the air pressure inside the third chamber 120. At this time, the second one-way valve 124 will not be pushed open by the air in the second chamber 430, so the air pressure inside the third chamber 120 will not continue to increase. Only when the sealing ring 500 at the sliding connection between the plastic top column 400 and the shell 100 leaks and causes the air pressure inside the first chamber 110 and the third chamber 120 to decrease, the downward movement of the plastic top column 400 will increase the air pressure inside the first chamber 110 and the third chamber 120.

[0055] It can be understood that such a setting can realize automatic pressure replenishment inside the first chamber 110 and the third chamber 120. Specifically, when the sealing ring 500 is damaged and the air pressure inside the first chamber 110 and the third chamber 120 is reduced, the pressure of the first chamber 110 and the third chamber 120 can be replenished by turning on / off the touch switch, so that the air pressure inside the first chamber 110 and the third chamber 120 can be maintained at a level greater than the standard atmospheric pressure, thereby preventing dust and water vapor from entering the first chamber 110 and the third chamber 120 through the damaged position of the sealing ring 500.

[0056] It should be added that a waterproof and breathable membrane should be provided at the second communication port 121 to prevent moisture from entering the first chamber 110 .

[0057] In a further embodiment, Figure 1 and Figure 3 As shown, the housing 100 includes an upper mounting frame 130, a lower mounting frame 140 and an outer insulating sleeve 150, and the upper mounting frame 130 and the lower mounting frame 140 are both located inside the outer insulating sleeve 150, and the upper mounting frame 130 and the lower mounting frame 140 are both abutted against the outer insulating sleeve 150. This arrangement is to facilitate the disassembly and assembly of the housing 100.

[0058] It should also be noted that, in this embodiment, specifically, the first chamber 110 is formed by enclosing an upper mounting frame 130 and a lower mounting frame 140 , the third chamber 120 is opened on the upper portion of the upper mounting frame 130 , and the plastic top column 400 is slidably connected to the upper mounting frame 130 .

[0059] It should be additionally explained that an annular rubber sheet 160 may be placed at the position where the upper mounting frame 130 and the lower mounting frame 140 are connected, so as to isolate the upper mounting frame 130 from the lower mounting frame 140 .

[0060] In a further embodiment, Figure 5 As shown, a first slot (not marked in the figure) is opened on one side of the interior of the lower mounting frame 140, and the first contact 210 is snapped into the first slot. A second slot (not marked in the figure) is opened on the opposite side of the interior of the lower mounting frame 140, and the second contact 220 is snapped into the second slot.

[0061] The first card slot and the second card slot are provided to facilitate installation of the first contact 210 and the second contact 220 .

[0062] In a further embodiment, Figure 5 As shown, a first wiring hole 141 and a second wiring hole 142 are opened at the lower portion of the lower mounting frame 140 . The first wiring hole 141 is connected to the first card slot, and the second wiring hole 142 is connected to the second card slot.

[0063] The first wiring hole 141 is provided to connect the wire to the first contact 210 after passing through the first wiring hole 141 , and the second wiring hole 142 is provided to connect the wire to the second contact 220 after passing through the second wiring hole 142 .

[0064] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A waterproof and dustproof touch switch, characterized in that: include: A shell, wherein a first chamber is provided inside the shell, the first chamber is isolated from the outside of the shell, and the air pressure inside the first chamber is greater than the atmospheric pressure; A first contact, the first contact is arranged at the lower part of the housing; A second contact point, which is also disposed at the lower portion of the housing and is spaced apart from the first contact point; A first metal spring, the first metal spring is disposed in the first cavity, the first metal spring is hemispherical and the center of the sphere is located below the hemispherical surface, and the annular outer side surface of the first metal spring is fixedly connected to the first contact point; A plastic top column, the lower part of which is slidably arranged in the first cavity, and the lower end of the plastic top column is located above the first metal spring; an inner ring groove is provided at the lower part of the plastic top column, a second metal spring is provided at the lower end of the inner ring groove, the second metal spring and the inner ring groove surround and form a second cavity, and the second cavity can be connected to the outside; a first connecting hole is provided inside the plastic top column, the first connecting hole is an inverted L-shape, one end of the first connecting hole passes through the side of the plastic top column, and the other end of the first connecting hole passes through the lower end surface of the plastic top column.

2. A waterproof and dustproof touch switch according to claim 1, characterized in that: A filter screen is arranged at one end of the first communication hole which passes through the side of the plastic top column.

3. A waterproof and dustproof touch switch according to claim 2, characterized in that: A plurality of sealing rings are arranged at intervals at the sliding connection between the plastic top column and the shell, and the hardness of the plurality of sealing rings increases gradually from top to bottom.

4. The waterproof and dustproof touch switch according to claim 1, characterized in that: A third chamber is formed at the upper portion of the shell, a second communication port is formed at the bottom of the third chamber, the second communication port connects the third chamber and the first chamber, a first one-way valve is provided in the second communication port, and the first one-way valve restricts the air in the first chamber from entering the third chamber through the second communication port; A first top column is arranged at the upper end of the plastic top column. When the first top column abuts against the first one-way valve, the first one-way valve opens, and the air in the third chamber enters into the first chamber.

5. The waterproof and dustproof touch switch according to claim 4, characterized in that: The third chamber has a third communication port on one side close to the first communication port, and a second one-way valve is arranged in the third communication port. The second one-way valve restricts the air in the third chamber from entering the second chamber through the third communication port and the first communication hole.

6. The waterproof and dustproof touch switch according to claim 5, characterized in that: The shell comprises an upper mounting frame, a lower mounting frame and an outer insulating sleeve. The upper mounting frame and the lower mounting frame are both located inside the outer insulating sleeve, and the upper mounting frame and the lower mounting frame are both in contact with the outer insulating sleeve.

7. The waterproof and dustproof touch switch according to claim 6, characterized in that: A first slot is formed on one side of the interior of the lower mounting frame, and the first contact is snapped into the first slot. A second slot is formed on the opposite side of the interior of the lower mounting frame, and the second contact is snapped into the second slot.

8. The waterproof and dustproof touch switch according to claim 7, characterized in that: A first wiring hole and a second wiring hole are provided at the lower portion of the lower mounting frame. The first wiring hole is communicated with the first card slot, and the second wiring hole is communicated with the second card slot.

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