Waterproof touch switch

Abstract

The utility model provides a waterproof touch switch, which comprises an upper cover, a button, an elastic sheet, a conductive assembly and a base, and is characterized in that a waterproof membrane assembly is arranged between the button and the elastic sheet and comprises a first polyimide membrane, an epoxy resin membrane and a second polyimide membrane which are sequentially stacked; the surface of the base is provided with a mounting groove and a connecting surface, the elastic sheet and the conductive assembly are arranged in the mounting groove, and the waterproof membrane assembly is fixed on the connecting surface and covers the mounting groove; according to the touch switch, the waterproof membrane assembly is arranged between the button and the elastic sheet to seal the mounting groove in which the elastic sheet and the conductive assembly are mounted, so that the waterproof effect and the service life of the switch are improved; specifically, a first polyimide film is fixed on the surface of a base through an epoxy resin film, and a second polyimide film is arranged between the epoxy resin film and an elastic sheet to isolate the epoxy resin film from the elastic sheet and avoid adhesion of the epoxy resin film and the elastic sheet.

Description

Technical Field

[0001] The utility model relates to the technical field of switches, in particular to a waterproof light touch switch. Background Art

[0002] A tactile switch uses a button to apply pressure to a spring element, switching the switch on and off. The switch typically consists of a base, button, housing, spring element, and conductive component. When the button is pressed, the spring element springs into contact with the conductive component, completing the circuit. When the button is released, the spring element separates from the conductive component, disconnecting the circuit. Tactile switch components are delicate and therefore easily damaged by improper storage or use. For example, rust can significantly shorten their service life.

[0003] There is an existing light touch switch, which includes a switch cover, a push piece, a metal spring, a conductive component and a base. The front surface of the metal spring is covered with an insulating film to protect the metal spring from reducing its service life due to excessively high or low ambient temperature. The present technical solution further improves this type of light touch switch, making it have a better waterproof effect and thus extending its service life. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a waterproof touch switch. The technical solutions adopted by this utility model are as follows:

[0005] A waterproof touch switch includes an upper cover, a button, a spring, a conductive component, and a base. A waterproof membrane assembly is arranged between the button and the spring, and the waterproof membrane assembly includes a first polyimide film, an epoxy resin film, and a second polyimide film stacked in sequence. The upper surface of the base has a mounting groove and a connecting surface. The spring and conductive component are arranged in the mounting groove. The waterproof membrane assembly is fixed to the connecting surface and covers the mounting groove.

[0006] Specifically, the first polyimide film is fixed to the connecting surface of the base through an epoxy resin film, and the epoxy resin is cured, so that the polyimide film and the switch base plastic are bonded to achieve a waterproof effect; the second polyimide film is located in the mounting groove and is connected to the first polyimide film through the epoxy resin film, and the second polyimide film is adapted to the shape of the mounting groove; the second polyimide film is located between the epoxy resin film and the shrapnel and isolates the epoxy resin film and the shrapnel to prevent the glue from sticking to the shrapnel and causing the switch to fail.

[0007] Preferably, the upper cover is provided with a through hole, and the button includes a pressing protrusion and a contact seat that are integrally connected, the contact seat is located between the upper cover and the first polyimide film of the waterproof diaphragm assembly, the diameter of the contact seat is larger than the diameter of the through hole, and the pressing protrusion passes through the through hole to protrude from the upper surface of the upper cover, thereby increasing operating comfort.

[0008] Preferably, the bottom surface of the abutment seat is a convex arc surface. When in use, the arc surface abuts against the first polyimide film and then press-fits with the spring.

[0009] As a preference, a buckle is provided on the periphery of the upper cover, and the upper cover is buckled with the base and positioned with the base through the buckle.

[0010] The beneficial effects of the utility model are as follows: the tactile switch is provided with a waterproof membrane assembly between the button and the spring to seal the mounting groove in which the spring and the conductive assembly are mounted, thereby improving the waterproof effect and service life of the switch; specifically, the first polyimide film is fixed to the surface of the base through an epoxy resin film, and a second polyimide film is provided between the epoxy resin film and the spring to isolate the epoxy resin film and the spring, thereby preventing the epoxy resin film and the spring from adhering to each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still fall within the scope of the present invention.

[0012] Figure 1 This is a three-dimensional diagram of the overall structure of Example 1;

[0013] Figure 2 This is an exploded view of the overall structure of Example 1;

[0014] Figure 3 This is a side view of Example 1;

[0015] Figure 4 for Figure 3 Cross-sectional view at AA in the middle;

[0016] In the figure, the upper cover 1, the through hole 101, the button 11, the pressing protrusion 111, the abutment seat 112, the buckle 12, the first polyimide film 21, the second polyimide film 22, the epoxy resin film 23, the spring 3, the conductive component 4, and the base 5. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in further detail below with reference to the embodiments and the accompanying drawings.

[0018] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for the purpose of distinguishing two non-identical entities or non-identical parameters with the same name. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. Subsequent embodiments will not explain this one by one.

[0019] The directional and positional terms used in this invention, such as "upper," "lower," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are used solely to refer to the directions or positions in the accompanying drawings. Therefore, the directional and positional terms used are intended to illustrate and facilitate understanding of this invention and are not intended to limit the scope of protection of this invention.

[0020] Example 1

[0021] like Figure 1-4 As shown, a waterproof touch switch includes an upper cover 1, a button 11, a spring 3, a conductive component 4 and a base 5. A waterproof membrane assembly is arranged between the button 11 and the spring 3, and the waterproof membrane assembly includes a first polyimide film 21, an epoxy resin film 23, and a second polyimide film 22 stacked in sequence.

[0022] Specifically: the upper surface of the base 5 has a mounting groove 51 and a connecting surface 52, the spring 3 and the conductive component 4 are arranged in the mounting groove 51, and the waterproof membrane component is fixed to the connecting surface 52 and covers the mounting groove 51; specifically: the first polyimide film 21 is fixed to the connecting surface 52 of the base 5 through the epoxy resin film 23, and the epoxy resin is cured so that the first polyimide film 21 and the switch base are combined to seal the mounting groove 51 to achieve a waterproof effect; the second polyimide film 22 is located in the mounting groove 51 and is connected to the first polyimide film 21 through the epoxy resin film 23, and the second polyimide film 22 is adapted to the shape of the mounting groove 51; the second polyimide film 22 is located between the epoxy resin film 23 and the spring 3 and isolates the epoxy resin film 23 and the spring 3.

[0023] The upper cover 1 is provided with a through hole 101, and the button 11 includes an integrally connected pressing protrusion 111 and a contact seat 112. The contact seat 112 is located between the upper cover 1 and the waterproof membrane assembly. The diameter of the contact seat 112 is larger than the diameter of the through hole 101. The pressing protrusion 111 passes through the through hole 101 to protrude from the upper surface of the upper cover 1; the bottom surface of the contact seat 112 is a convex arc surface, which is in contact and pressure-fitted with the waterproof membrane assembly and the spring 3.

[0024] Finally, a buckle 12 is extended from the outer periphery of the upper cover 1 , and the upper cover 1 is buckled with the base 5 and positioned and matched with the base 5 through the buckle 12 .

[0025] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A waterproof touch switch, comprising an upper cover (1), a button (11), a spring (3), a conductive component (4) and a base (5), characterized in that: A waterproof membrane assembly is provided between the button (11) and the spring sheet (3), the waterproof membrane assembly comprising a first polyimide film (21), an epoxy resin film (23), and a second polyimide film (22) stacked in sequence; the base (5) has a mounting groove (51) and a connecting surface (52); the spring sheet (3) and the conductive assembly (4) are provided in the mounting groove (51); the waterproof membrane assembly is fixed to the connecting surface (52) and closes the mounting groove (51).

2. The waterproof touch switch according to claim 1, characterized in that: The first polyimide film (21) is fixed to the connection surface (52) of the base (5) through the epoxy resin film (23); the second polyimide film (22) is located in the installation groove (51) and is connected to the first polyimide film (21) through the epoxy resin film (23); and the second polyimide film (22) is adapted to the shape of the installation groove (51).

3. The waterproof touch switch according to claim 1, characterized in that: The second polyimide film (22) is located between the epoxy resin film (23) and the elastic sheet (3) and isolates the epoxy resin film (23) and the elastic sheet (3).

4. The waterproof touch switch according to claim 1, characterized in that: The upper cover (1) is provided with a through hole (101), the button (11) comprises a pressing protrusion (111) and a contact seat (112) connected to each other, the contact seat (112) is located between the upper cover (1) and the waterproof membrane assembly, and the pressing protrusion (111) passes through the through hole (101) to protrude from the upper surface of the upper cover (1).

5. The waterproof touch switch according to claim 4, characterized in that: The bottom surface of the abutment seat (112) is a convex arc surface, and the arc surface is press-fitted with the waterproof membrane assembly and the spring (3).

6. The waterproof touch switch according to claim 4, characterized in that: The diameter of the abutment seat (112) is greater than the diameter of the through hole (101).

7. The waterproof touch switch according to claim 1, characterized in that: A buckle claw (12) is provided extending from the outer periphery of the upper cover (1), and the upper cover (1) is buckled with the base (5) and positioned and matched with the base (5) through the buckle claw (12).

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