Waterproof touch switch
By incorporating waterproof pads and dust covers into the tactile switch, combined with a disc-shaped spring and groove design, the problem of water and dust infiltration is solved, achieving waterproof and dustproof effects and improving the product's lifespan and safety.
Patent Information
- Application Number
- CN202420212034.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-29
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-01-29
AI Technical Summary
Existing tactile switches are prone to water or dust infiltration due to the planar contact between the upper and lower mounted parts, resulting in problems such as short circuits and malfunctions.
It adopts a waterproof gasket and dust cover design, with waterproof structures set between the button and switch cover, and between the switch cover and switch base to prevent water and dust from seeping in. Combined with a disc-shaped spring and groove design, it enhances waterproof performance.
It effectively prevents water and dust from penetrating, improves the product's waterproof and dustproof performance, extends its service life, and enhances its safety.
Smart Images
Figure CN222338118U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric switches, in particular to a waterproof light touch switch. Background Art
[0002] A touch switch is also called a key switch. When in use, the switch function is closed by applying pressure in the direction of the switch operation under the condition of satisfying the operating force. When the pressure is removed, the switch is disconnected. Touch switches have the advantages of small contact resistance, precise operating force error, and diversified specifications. They are widely used in electronic equipment and home appliances such as audio-visual products, digital products, remote controls, communication products, security products, toys, computer products, medical equipment, banknote detectors, laser pen buttons, etc. In existing touch switches, since the upper and lower parts are usually in flat contact, water or dust can penetrate from the flat joint of the parts, which can easily cause water or dust to enter the product, resulting in problems such as switch short circuit and malfunction. Utility Model Content
[0003] The utility model provides a waterproof light touch switch, which solves the problem of poor waterproof performance and has the advantages of being waterproof and dustproof, thereby effectively ensuring the service life and safety of the product.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] Provided is a waterproof touch switch, comprising a button, a switch cover, a waterproof rubber pad and a switch seat arranged in sequence from top to bottom;
[0006] The button comprises a button body, and a limit ring is formed by radially extending outward from the lower end of the button body; the switch cover comprises a cover plate portion covering the top of the switch seat and a fixing portion located at the edge of the cover plate portion, and a through hole is formed at the center of the cover plate portion; the upper end of the button body extends out from the through hole;
[0007] The switch seat has an inner cavity at the middle position; the switch seat has embedded grooves around the top, and a circle of waterproof convex strips is provided near the edge of the inner cavity; the waterproof rubber pad has wing parts around it, and a circle of waterproof grooves corresponding to the waterproof convex strips is provided on the bottom surface; the wing parts of the waterproof rubber pad are attached to the embedded grooves and pressed by the switch cover, so that the waterproof grooves and the waterproof convex strips are closely matched;
[0008] A disc-shaped spring leaf with an upward arch at the center is arranged in the inner cavity; a center contact point and a side contact point are respectively arranged at the center and edge of the bottom of the inner cavity. In normal state, the edge of the disc-shaped spring leaf contacts the side contact point, the middle of the disc-shaped spring leaf keeps a distance from the center contact point, and abuts against the lower end of the button body; a groove is arranged on the inner bottom wall of the inner cavity between the center contact point and the side contact point.
[0009] In some embodiments, a waterproof baffle is formed at the outer edge of the cover plate portion of the switch cover and extends vertically downward; the waterproof baffle surrounds the outer side of the waterproof rubber pad and the upper end of the switch seat.
[0010] In some embodiments, a positioning through hole is provided on the fixing portion, and a positioning column protruding upward is provided on the top of the switch seat. The end of the positioning column passes through the positioning through hole and is fixed by forming a rivet point through hot riveting.
[0011] In some embodiments, an elastic dust cover is provided between the limiting ring and the switch cover.
[0012] In some embodiments, the waterproof touch switch also includes a first card and a second card arranged at the bottom of the switch seat, the upper ends of the first card and the second card extend into the switch seat and are electrically connected to the center contact point and the side contact point respectively, and the lower ends of the first card and the second card extend out of the switch seat to form pins.
[0013] The waterproof touch switch provided by the utility model comprises two waterproof structures, one of which is a dust cover arranged between the button and the switch cover, and the other is a waterproof gasket arranged between the switch cover and the switch seat, which can effectively prevent water or dust from penetrating from the joint between the button and the switch cover, and the joint between the switch cover and the switch seat, so that the waterproof touch switch is isolated from water vapor or dust in the air during use, and can play a waterproof and dustproof effect, thereby making the service life and safety of the waterproof touch switch not effectively guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0015] Figure 1 This is a schematic diagram of the structure of the waterproof touch switch of the utility model;
[0016] Figure 2 for Figure 1The exploded diagram of the waterproof touch switch provided in;
[0017] Figure 3 This is a schematic diagram of the structure of the switch base in the waterproof touch switch of the utility model;
[0018] Figure 4 It is a structural schematic diagram of a waterproof gasket in a waterproof touch switch of the utility model;
[0019] Figure 5 It is a cross-sectional view of the switch base of the utility model cut along the AA direction;
[0020] Figure 6 This is a top view of the switch base in the utility model. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present utility model are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In the present utility model, unless otherwise clearly specified and limited, the terms "connection", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral whole; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0023] In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.
[0024] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0025] The present utility model embodiment provides a waterproof touch switch 100. Figure 1 and Figure 2 As shown, the waterproof touch switch 100 includes a button 1, a switch cover 2, a waterproof rubber pad 3 and a switch base 4 which are arranged in sequence from top to bottom.
[0026] Among them, Figure 2 As shown, the button 1 comprises a button body 11, a stop ring 12 is formed by radially extending outward from the lower end of the button body 11, and an elastic dust cover 13 is attached to the upper end surface of the stop ring 12. Figure 2 As shown, the switch cover 2 includes a cover plate portion 22 covering the top of the switch seat 4 and a fixing portion 21 located at the edge of the cover plate portion 22. The switch cover 2 is fixedly connected to the switch seat 4 through the fixing portion 21. A through hole 211 is formed in the middle of the cover plate portion 22. Figure 1 and Figure 2 As shown, the upper end of the button body 11 extends out from the through hole 211, and the upper end of the dust cover 13 is attached to the inner top surface of the cover portion 22, so that the gap between the limit ring 12 and the cover portion 22 is blocked by the dust cover 13. The dust cover 13 can be specifically set to a sleeve-like structure, and the dust cover 13 is sleeved on the button body 11. The dust cover 13 has telescopic elasticity in the up and down directions. The dust cover 13 is effectively connected between the limit ring 12 and the cover portion 22, so that the dust cover 13 can effectively prevent water or dust from penetrating from the junction of the button 1 and the switch cover 2; the dust cover 13 can be made of silicone or rubber.
[0027] like Figure 3 As shown, the switch base 4 has an inner cavity 41 in the middle; the top of the switch base 4 is provided with embedded grooves 42 around it, and a circle of waterproof convex strips 43 is provided near the edge of the inner cavity 41. Figure 4 As shown, the waterproof rubber pad 3 is square, with wing portions 31 provided on all four sides, and a circle of waterproof grooves 32 corresponding to the waterproof convex strips 43 provided on the bottom surface. The wing portions 31 of the waterproof rubber pad 3 are attached to the embedded grooves 42 and pressed by the switch cover 2, and the waterproof grooves 32 and the waterproof convex strips 43 are closely matched, so that the waterproof rubber pad 3 can effectively prevent water or dust from penetrating from the joint between the switch cover 2 and the switch seat 4.
[0028] The waterproof touch switch 100 provided by the utility model includes two waterproof structures, one of which is a dust cover 13 arranged between the button 1 and the switch cover 2, and the other is a waterproof gasket 3 arranged between the switch cover 2 and the switch seat 4, which can effectively prevent water or dust from penetrating from the joint between the button 1 and the switch cover 2, and the joint between the switch cover 2 and the switch seat 4, so that the waterproof touch switch 100 is isolated from water vapor or dust in the air during use, and can play a waterproof and dustproof effect, thereby making the service life and safety of the waterproof touch switch not effectively guaranteed.
[0029] like Figure 2 , Figure 3 and Figure 5 As shown, a disc-shaped spring leaf 5 with a center that arches upward is arranged in the inner cavity 41 of the switch seat 4; a central contact point 45 and a side contact point 46 are respectively arranged at the center and edge of the bottom of the inner cavity 41, and the positions of the central contact point 45 and the side contact point 46 correspond to the center and edge of the disc-shaped spring leaf 5, respectively. In normal state, the edge of the disc-shaped spring leaf 5 contacts the side contact point 46, and the middle of the disc-shaped spring leaf 5 keeps a distance from the central contact point 45 and abuts against the lower end of the button body 11. When the button 1 is pressed downward, the middle of the disc-shaped spring leaf 5 is pressed downward and deformed to make it contact with the central contact point 45, so that the side contact point 46 and the central contact point 45 are connected through the disc-shaped spring leaf 5 to form a current path. The disc-shaped spring leaf 5 adopts a metal spring sheet.
[0030] For further information, see Figure 5 and Figure 6 As shown, a groove 47 is provided on the inner bottom wall of the cavity 41 between the central contact point 45 and the side contact point 46. The groove 47 is recessed downward from the inner bottom wall of the cavity 41. The existence of the groove 47 can increase the creepage distance between the side contact point 46 and the central contact point 45, and can avoid short circuit of the waterproof touch switch 100 to a certain extent, so as to better ensure its performance; the groove 47 is preferably an annular groove, the central contact point 45 is located on the inner side of the annular groove, and the side contact point 46 is located on the outer side of the annular groove, and the annular groove can be set to a square ring or a circular ring structure.
[0031] In some embodiments, Figure 1 and Figure 2 As shown, a waterproof baffle 23 is vertically extended downwardly at the outer edge of the cover plate portion 22 of the switch cover 2; the waterproof baffle 23 surrounds the outer side of the upper end of the waterproof rubber pad 3 and the switch seat 4. This can effectively prevent water or dust from penetrating through the gap at the overlapping edge of the switch cover 2 and the waterproof rubber pad 3.
[0032] In some embodiments, Figure 1 and Figure 2As shown, a positioning through hole is provided on the fixing portion 21, and a positioning column 40 protruding upward is provided on the top of the switch seat 4. The end of the positioning column 40 passes through the positioning through hole and is then hot-riveted to form a rivet point 44. The outer diameter of the rivet point 44 formed after hot riveting is larger than the aperture of the positioning through hole to form an effective stop for the switch cover 2, thereby fixing the switch cover 2 to the switch seat 4. The fixing method has a simple structure and is easy to implement.
[0033] In some embodiments, Figure 1 and Figure 2 As shown, the waterproof touch switch 100 also includes a first clamp 48 and a second clamp 49 arranged at the bottom of the switch seat 4, the upper ends of the first clamp 48 and the second clamp 49 extend into the switch seat 4 and are electrically connected to the central contact point 45 and the side contact point 46 respectively, and the lower ends of the first clamp 48 and the second clamp 49 extend out of the switch seat 4 to form pins, which are used to connect to an external circuit.
[0034] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A waterproof touch switch, characterized in that: It includes a button, a switch cover, a waterproof rubber pad and a switch seat which are arranged in sequence from top to bottom; The button comprises a button body, and a limit ring is formed by radially extending outward from the lower end of the button body; the switch cover comprises a cover plate portion covering the top of the switch seat and a fixing portion located at the edge of the cover plate portion, and a through hole is formed at the center of the cover plate portion; the upper end of the button body extends out from the through hole; The switch seat has an inner cavity at the middle position, and the switch seat is provided with embedded grooves around the top, and a circle of waterproof convex strips is provided near the edge of the inner cavity; the waterproof rubber pad is provided with wing parts around the periphery, and a circle of waterproof grooves corresponding to the waterproof convex strips is provided on the bottom surface; the wing parts of the waterproof rubber pad are attached to the embedded grooves and pressed by the switch cover, so that the waterproof grooves and the waterproof convex strips are closely matched; A disc-shaped spring leaf with an upward arch at the center is arranged in the inner cavity; a center contact point and a side contact point are respectively arranged at the center and edge of the bottom of the inner cavity. In normal state, the edge of the disc-shaped spring leaf contacts the side contact point, the middle of the disc-shaped spring leaf keeps a distance from the center contact point, and abuts against the lower end of the button body; a groove is arranged on the inner bottom wall of the inner cavity between the center contact point and the side contact point.
2. The waterproof touch switch according to claim 1, characterized in that: A waterproof baffle is formed at the outer edge of the cover plate portion of the switch cover and extends vertically downward; the waterproof baffle surrounds the outer side of the waterproof rubber pad and the upper end of the switch seat.
3. The waterproof touch switch according to claim 1, characterized in that: The fixing portion is provided with a positioning through hole, the top of the switch seat is provided with a positioning column protruding upward, and the end of the positioning column passes through the positioning through hole and is fixed by forming a rivet point through hot riveting.
4. The waterproof touch switch according to any one of claims 1 to 3, characterized in that: An elastic dust cover is arranged between the limit ring and the switch cover.
5. The waterproof touch switch according to claim 4, characterized in that: The waterproof touch switch also includes a first clamp and a second clamp arranged at the bottom of the switch seat, the upper ends of the first clamp and the second clamp extend into the switch seat and are electrically connected to the central contact point and the side contact point respectively, and the lower ends of the first clamp and the second clamp extend out of the switch seat to form pins.