Silica gel button waterproof switch

Abstract

The utility model provides a silica gel button waterproof switch, which belongs to the technical field of waterproof switches, and comprises a base, a cover plate, an elastic sheet and a button, a first contact sheet and a second contact sheet are embedded on the base, the button comprises a pressing part, a sealing gasket part and a triggering part which are integrally formed by silica gel, a through hole for the pressing part to pass through is arranged on the cover plate, and the elastic sheet is embedded in the cover plate. The sealing gasket portion is pressed between the cover plate and the base in an abutting mode, the trigger portion abuts against the elastic piece, the elastic piece is round, a plurality of open grooves are evenly formed in the elastic piece in the circumferential direction, and the open grooves incline clockwise or anticlockwise and gather towards the center of the round elastic piece. According to the utility model, the groove can change the elastic characteristic of the elastic sheet, so that the elastic sheet can be better bent and deformed when an external force is applied, more accurate switch trigger points can be realized, the response performance of the switch is optimized, the stress dispersion capability of the switch is improved, and the inclined groove can guide the transmission of the force, so that the reliability of the switch is improved. And the impact stress generated in the operation process of the elastic sheet is relieved.

Description

Technical Field

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

[0002] With the advancement of technology and people's increasing demand for electronic product functions, waterproof switches have become an indispensable component in modern electronic devices. Waterproof switches refer to switch devices with waterproof and dustproof properties, which are widely used in various environments, such as outdoor electronic equipment, household appliances, automotive electronics and industrial control systems. Waterproof switches are designed to prevent the ingress of moisture and dirt to ensure the normal operation and long-term use of equipment in humid or harsh environments.

[0003] A traditional waterproof switch includes a base, an upper cover, a button, a spring and a contact assembly, wherein a sealing gasket is arranged between the base and the upper cover, and the button abuts against the sealing gasket, so that the thickness of the entire waterproof switch is increased. Secondly, most of the current springs are circular springs. When the force applied to the button is uneven, it is easy to affect the rebound of the circular spring and the sensitivity of the switch. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a silicone button waterproof switch.

[0005] The technical solution adopted by the utility model is as follows: the application provides a silicone button waterproof switch, including a base, a cover plate, a spring and a button, the base is embedded with a first contact piece and a second contact piece, the button includes a pressing part, a sealing pad part and a trigger part integrally formed by silicone, the cover plate is provided with a through hole for the pressing part to pass through, the sealing pad part is pressed between the cover plate and the base, the trigger part is in contact with the spring, the spring is circular and has a plurality of grooves evenly arranged circumferentially thereon, and the plurality of grooves are inclined clockwise or counterclockwise and gather toward the center of the circular spring.

[0006] In some embodiments, the groove starts at a radius of 1 / 2-2 / 3 outward from the center of the spring piece.

[0007] In some embodiments, the width of the slot does not exceed one tenth of the diameter of the spring piece.

[0008] In some embodiments, the inclination angle of the groove is 35°-55°.

[0009] In some embodiments, the slot runs through the edge of the spring sheet.

[0010] In some embodiments, a square contact is disposed on the second contact sheet, an edge of the spring sheet abuts against the square contact, and a length of the square contact is greater than a width of the slot.

[0011] In some embodiments, the base is provided with positioning posts having a number not less than the number of slots, and the positioning posts pass through the slots.

[0012] In some embodiments, a first contact point is arranged at the center of the elastic sheet toward the first contact sheet, three second contacts are arranged in a triangle on the first contact sheet, and the orthographic projection of the first contact point is located at the center of the three second contacts.

[0013] In some embodiments, a positioning protrusion is provided at the center of the spring sheet toward the trigger portion, and the trigger portion is provided with a positioning groove matched with the positioning protrusion, and the positioning protrusion of the spring sheet is always located in the positioning groove during deformation.

[0014] In some embodiments, a sealing convex ring is disposed on the upper end surface of the base, and the sealing convex ring abuts against the sealing gasket.

[0015] In some embodiments, the cover plate includes a first plate portion and a second plate portion located on both sides of the first plate portion, the through hole is arranged at the center of the first plate portion, the two side walls of the base are provided with snap-in blocks, the second plate portion is provided with a snap-in interface, the lower end of the snap-in block is provided with a snap-in groove, and the two sides of the sealing gasket portion are provided with protrusion portions, when the cover plate and the base are assembled, the protrusion portion is pressed between the sealing convex ring and the upper side of the snap-in interface and the lower side of the snap-in interface is embedded in the snap-in groove.

[0016] The beneficial effects of the utility model are as follows:

[0017] 1. In the present invention, the traditional sealing pad and button are integrally formed by silicone, so that the overall thickness of the switch is reduced, which helps to improve the compactness and portability of the product and meets the demand for lightness and thinness of modern electronic products.

[0018] 2. The slots in the utility model can change the elastic properties of the spring, so that it can bend and deform better when external force is applied, which helps to achieve a more accurate switch trigger point, optimize the response performance of the switch, and improve its stress dispersion ability. The inclined slots can guide the transfer of force and alleviate the impact stress generated by the spring during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the utility model.

[0020] Figure 1The explosion of the silicone button waterproof switch in the utility model Figure 1 ;

[0021] Figure 2 It is a cross-sectional view of the silicone button waterproof switch in the utility model;

[0022] Figure 3 It is a schematic diagram of a spring in the utility model;

[0023] Figure 4 It is a schematic diagram of another spring piece in the utility model;

[0024] Figure 5 for Figure 1 The enlarged view of point A in the middle;

[0025] Figure 6 for Figure 2 The enlarged view of point B in the middle;

[0026] Figure 7 The explosion of the silicone button waterproof switch in the utility model Figure 2 ;

[0027] Figure 8 It is a schematic diagram of the silicone button waterproof switch in the utility model. DETAILED DESCRIPTION

[0028] The following description provides specific application scenarios and requirements of this specification, with the purpose of enabling those skilled in the art to make and use the contents of this specification. Various local modifications to the disclosed embodiments will be apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of this specification. Therefore, this specification is not limited to the embodiments shown, but to the widest scope consistent with the claims.

[0029] In the description of the present application, it should be noted that, unless otherwise expressly specified and limited, the terms "longitudinal", "transverse", "radial", "length", "width", "thickness", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. These terms are mainly for better describing the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0030] Secondly, the terms "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components and should not be understood as limitations on the embodiments of the present application.

[0031] In addition, the terms "installed", "set", "provided with", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements or components.

[0032] For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] Regarding the drawings of the present application, it should be clearly understood that the drawings are for illustration and description purposes only and are not intended to limit the scope of the present specification. It should also be understood that the drawings are not drawn to scale.

[0034] like Figures 1 to 8 As shown, the present specification provides a silicone button waterproof switch, including a base 1, a cover plate 2, a spring 3 and a button 4, the base 1 is embedded with a first contact piece 5 and a second contact piece 6, the first contact piece 5 and the second contact piece 6 are directly injection molded with the base 1, the button 4 includes a pressing portion 40, a sealing pad portion 41 and a trigger portion 42 integrally formed with silicone, the cover plate 2 is provided with a through hole 20 for the pressing portion 40 to pass through, the sealing pad portion 41 is pressed between the cover plate 2 and the base 1, and the trigger portion 42 is abutted against the spring 3, the traditional sealing pad and the button are integrally molded with silicone, so that the overall thickness of the switch is reduced, which helps to improve the compactness and portability of the product, and is suitable for the demand for lightness and thinness of modern electronic products.

[0035] Secondly, the spring piece 3 is circular and has a plurality of slots 30 evenly arranged on its circumference. The plurality of slots 30 are inclined clockwise or counterclockwise and gathered toward the center of the circular spring piece 3. The slots 30 can change the elastic properties of the spring piece so that it can bend and deform better when external force is applied, which helps to achieve a more accurate switch trigger point, optimize the response performance of the switch, and improve its stress dispersion ability. The inclined slots can guide the transfer of force and alleviate the impact stress generated by the spring piece during operation.

[0036] In some embodiments, the slot 30 starts at a radius of 1 / 2-2 / 3 outward from the center of the spring piece 3. Specifically, Figure 3 As shown, the groove 30 starts from the ab area on the spring piece 3. By controlling the depth and position of the groove, the impact stress on the spring piece 3 during operation can be reduced, the fatigue damage caused by repeated use can be reduced, and the service life of the product can be extended.

[0037] In some embodiments, the width of the slot 30 does not exceed one tenth of the diameter of the spring piece 3 , which helps to maintain the overall strength of the spring piece 3 and ensures that when an external force is applied, the spring piece 3 can still withstand sufficient load without brittle failure.

[0038] In some embodiments, the inclination angle C of the groove 30 is 35°-55°, preferably 55°, which guides the stress to be transmitted along this direction and can reduce the stress peak.

[0039] In some embodiments, Figure 4 As shown, the slot 30 runs through the edge of the spring sheet 3, so that the spring sheet 3 can bend and deform in a larger range and more quickly when subjected to force.

[0040] In order to better support the spring piece 3, a square contact 60 is provided on the second contact piece 6 to replace the traditional arc-shaped contact. The edge of the spring piece 3 abuts against the square contact 60. The length of the square contact 60 is greater than the width of the slot 30. A reliable electrical connection can be formed through the square contact 60, which helps to ensure the long-term stability and consistency of the switch and reduce the risk of electrical failure caused by poor contact.

[0041] In some embodiments, the base 1 is provided with positioning posts 100 having a number not less than the number of slots 30 . The positioning posts 100 pass through the slots 30 , thereby improving the stability of the spring 3 on the base 1 and thus improving the reliability of the switch.

[0042] In some embodiments, a first contact 31 is provided at the center of the spring sheet 3 toward the first contact sheet 5, and three second contacts 50 are provided in a triangular shape on the first contact sheet 5. The orthographic projection of the first contact 31 is located at the center of the three second contacts 50. Such a configuration helps to ensure stable contact between the spring sheet 3 and the first contact sheet 5, and ensure redundancy and reliability of the electrical connection.

[0043] In some embodiments, a positioning protrusion 32 is provided at the center of the spring piece 3 toward the trigger portion 42, and the trigger portion 42 is provided with a positioning groove 420 adapted to the positioning protrusion 32. The positioning protrusion 32 of the spring piece 3 is always located in the positioning groove 420 during deformation. Such a setting ensures the precise position of the spring piece 3 during the deformation process, prevents the spring piece 3 from being offset, and ensures that it always maintains good contact with the trigger portion 42 during operation.

[0044] In some embodiments, a sealing convex ring 101 is disposed on the upper end surface of the base 1 , and the sealing convex ring 101 abuts against the sealing pad portion 41 , thereby reducing the contact area and increasing the abutting pressure, thereby forming a more reliable seal between the two.

[0045] In some embodiments, the cover plate 2 includes a first plate portion 21 and a second plate portion 22 located on both sides of the first plate portion 21, the through hole 20 is arranged at the center of the first plate portion 21, the two side walls of the base 1 are provided with a snap-in block 103, the second plate portion 22 is provided with a snap-in interface 220, the lower end of the snap-in block 103 is provided with a snap-in groove 104, and the two sides of the sealing pad portion 41 are provided with a protrusion portion 410. When the cover plate 2 is assembled with the base 1, the protrusion portion 410 is pressed between the sealing convex ring 101 and the upper side of the snap-in interface 220 and the lower side of the snap-in interface 220 is embedded in the snap-in groove 104. With this arrangement, a firm connection is formed between the cover plate 2 and the base 1, and the flexibility of the sealing pad portion 41 is used to reduce the difficulty of assembly.

[0046] In some embodiments, Figure 8 As shown, the first contact piece 5 and the second contact piece 6 are both provided with pins 7 extending out of the base 1 for connecting with a circuit board or other equipment, and the bottom of the base 1 is provided with a receiving groove for the pins 7 to be bent and embedded.

[0047] In summary, after reading this detailed disclosure, those skilled in the art will appreciate that the foregoing detailed disclosure may be presented only by way of example and may not be restrictive. Although not explicitly stated herein, those skilled in the art will appreciate that the requirements of this application encompass various reasonable changes, improvements and modifications to the embodiments. These changes, improvements and modifications are intended to be proposed by the present application and are within the spirit and scope of the exemplary embodiments of the present application.

[0048] In addition, it should be understood that in the foregoing description of the embodiments of the present application, in order to help understand a feature and for the purpose of simplifying the present application, the present application combines various features in a single embodiment, drawing or its description. However, this does not mean that the combination of these features is necessary. When reading the present application, it is entirely possible for a person skilled in the art to mark out a part of the devices as a separate embodiment. In other words, the embodiments in the present application can also be understood as the integration of multiple secondary embodiments. This is also true when the content of each secondary embodiment is less than all the features of a single aforementioned disclosed embodiment.

[0049] Finally, it should be understood that the embodiments of the application disclosed herein are explanations of the principles of the embodiments of the present application. Other modified embodiments are also within the scope of the present application. Therefore, the embodiments disclosed in the present application are merely examples and not limitations. Those skilled in the art can adopt alternative configurations according to the embodiments in the present application to implement the application in the present application. Therefore, the embodiments of the present application are not limited to the embodiments accurately described in the application.

Claims

1. Silicone button waterproof switch, characterized by: It includes a base, a cover plate, a spring sheet and a button, wherein a first contact sheet and a second contact sheet are embedded in the base, and the button includes a pressing portion, a sealing pad portion and a trigger portion integrally formed by silicone, a through hole for the pressing portion to pass through is provided on the cover plate, the sealing pad portion is pressed between the cover plate and the base, and the trigger portion is in contact with the spring sheet, the spring sheet is circular and has a plurality of grooves uniformly arranged circumferentially thereon, and the plurality of grooves are inclined clockwise or counterclockwise and gather toward the center of the circular spring sheet.

2. The silicone button waterproof switch according to claim 1, characterized in that: The groove starts from the 1 / 2-2 / 3 radius outward from the center of the spring piece.

3. The silicone button waterproof switch according to claim 1, characterized in that: The width of the slot does not exceed one tenth of the diameter of the spring piece.

4. The silicone button waterproof switch according to claim 1, characterized in that: The inclination angle of the groove is 35°-55°.

5. The silicone button waterproof switch according to any one of claims 1 to 4, characterized in that: The slot passes through the edge of the spring piece.

6. The silicone button waterproof switch according to claim 5, characterized in that: The second contact piece is provided with a square contact point, the edge of the spring piece abuts against the square contact point, and the length of the square contact point is greater than the width of the slot.

7. The silicone button waterproof switch according to claim 1, characterized in that: The base is provided with positioning posts having a number no less than the number of the slots, and the positioning posts pass through the slots.

8. The silicone button waterproof switch according to claim 1, characterized in that: A first contact point is arranged at the center of the elastic sheet toward the first contact sheet, three second contacts are arranged in a triangle on the first contact sheet, and the orthographic projection of the first contact point is located at the center of the three second contacts.

9. The silicone button waterproof switch according to claim 1, characterized in that: A positioning protrusion is arranged at the center of the spring sheet toward the trigger portion, and the trigger portion is provided with a positioning groove matched with the positioning protrusion. The positioning protrusion of the spring sheet is always located in the positioning groove during deformation.

10. The silicone button waterproof switch according to claim 1, characterized in that: The upper end surface of the base is provided with a sealing convex ring, and the sealing convex ring is abutted against the sealing gasket portion. The cover plate includes a first plate portion and a second plate portion located on both sides of the first plate portion. The through hole is arranged at the center of the first plate portion. The two side walls of the base are provided with snap-in blocks, and the second plate portion is provided with a snap-in interface. The lower end of the snap-in block is provided with a snap-in groove, and protrusion portions are provided on both sides of the sealing gasket portion. When the cover plate and the base are assembled, the protrusion portion is pressed between the sealing convex ring and the upper side of the snap-in interface and the lower side of the snap-in interface is embedded in the snap-in groove.

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