A waterproof key structure and electronic device

Abstract

The utility model discloses a waterproof key structure, electronic equipment, waterproof key structure includes: the shell casing, is set up with the key installation hole on it, plastic key is nestable in the key installation hole movably, silica gel layer is closely attached and is fixed on the inner wall surface of key installation hole, is equipped with through -hole on it, and the interference fit is formed between the outside wall of plastic key and the inner side wall of through -hole of silica gel layer. The utility model can form waterproof barrier, and the key movement is more stable, and reduces assembly complexity.

Description

Technical Field

[0001] This utility model relates to the field of waterproof technology for electronic devices, and in particular to a waterproof button structure and electronic device. Background Technology

[0002] Traditional waterproof button structures typically use silicone encapsulation or sealing rings for waterproofing, but these methods suffer from structural complexity and insufficient stability. For example, the waterproof speaker button disclosed in existing technology (CN2018212237) uses a groove interference fit + internal button post design: the silicone button side is connected to a waterproof plug, and the pressing action is transmitted through the button post. This structure results in uneven force distribution when the button post moves, easily causing a wobbling sensation, and long-term use may reduce sealing performance and user experience. In addition, relying on independent button posts increases assembly complexity and the risk of failure. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a waterproof button structure and electronic device that can form a waterproof barrier, make the button movement more stable, and reduce assembly complexity.

[0004] To solve the above-mentioned technical problems, the first aspect of this utility model discloses a waterproof button structure, comprising:

[0005] The outer casing has button mounting holes on it;

[0006] A plastic button is movably nested within the button mounting hole;

[0007] A silicone layer is tightly attached to and fixed to the inner wall of the button mounting hole, and a through hole is provided thereon; an interference fit is formed between the outer wall of the plastic button and the inner wall of the through hole of the silicone layer.

[0008] As an optional implementation, it also includes double-sided adhesive, disposed between the inner wall surface of the outer casing and the silicone layer, for bonding and fixing the silicone layer to the inner wall surface of the button mounting hole.

[0009] As another optional implementation: it also includes an annular limiting member; the bottom of the plastic button is provided with an annular groove, and the annular limiting member is fixed on the annular groove; the radial dimension of the annular limiting member is larger than the inner diameter of the through hole of the silicone layer, so as to limit the displacement range of the plastic button in the pressing direction and prevent the plastic button from falling out.

[0010] As another optional implementation: the annular limiting member is a metal snap ring or an engineering plastic buckle, with a C-shaped or split annular structure in cross-section.

[0011] As another optional implementation: the silicone layer extends from the edge of the through hole near the bottom of the plastic button toward the upper surface of the silicone layer to form a boss-type flange structure;

[0012] The outer wall of the plastic button and the inner wall of the boss-type flange structure form an interference fit.

[0013] As another alternative implementation: the double-sided adhesive is acrylic foam double-sided adhesive tape.

[0014] As another optional implementation, the top surface of the plastic button is provided with anti-slip texture or markings.

[0015] As another optional implementation: an elastic reset element is provided between the annular limiting member and the inner wall of the outer casing, for resetting the plastic button after pressing.

[0016] As another optional implementation: the elastic reset element is a helical spring, a disc spring, or a silicone elastic column.

[0017] The second aspect of this utility model discloses an electronic device, including the waterproof button structure disclosed in the first aspect of this utility model.

[0018] Compared with the prior art, the embodiments of this utility model have the following beneficial effects:

[0019] This utility model embodiment eliminates the traditional external silicone internal button post design, and directly realizes the button pressing operation through the movement of the button itself. The interference fit between the outer wall of the plastic button and the inner wall of the through hole of the silicone layer forms a waterproof barrier, making the button movement more stable and reducing the assembly complexity. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a waterproof button structure disclosed in an embodiment of this utility model;

[0022] Figure 2 This is a cross-sectional structural diagram of a waterproof button structure disclosed in an embodiment of this utility model. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1

[0025] See Figures 1-2 This utility model discloses a waterproof button structure, comprising:

[0026] The outer casing 1 has a button mounting hole 11 on it;

[0027] The plastic button 2 is movably nested within the button mounting hole 11;

[0028] The silicone layer 3 is tightly attached to and fixed to the inner wall of the button mounting hole 11, and has a through hole 31 thereon; the outer wall of the plastic button 2 and the inner wall of the through hole 31 of the silicone layer 3 form an interference fit.

[0029] This utility model embodiment eliminates the traditional external silicone internal button post design, and directly realizes the button pressing operation through the movement of the button itself. Through the interference fit between the outer wall of the plastic button 2 and the inner wall of the through hole 31 of the silicone layer 3, a waterproof barrier is formed, making the button movement more stable and reducing the assembly complexity.

[0030] In an optional embodiment, double-sided adhesive 4 is further included, disposed between the inner wall surface of the outer casing 1 and the silicone layer 3, for bonding and fixing the silicone layer 3 to the inner wall surface of the button mounting hole 11.

[0031] In another optional embodiment, an annular limiting member 5 is also included; the bottom of the plastic button 2 is provided with an annular groove 21, and the annular limiting member 5 is fixed on the annular groove 21; the radial dimension of the annular limiting member 5 is larger than the inner diameter of the through hole 31 of the silicone layer 3, so as to limit the displacement range of the plastic button 2 in the pressing direction and prevent the plastic button 2 from falling out.

[0032] In another optional embodiment, the annular limiting member 5 is a metal snap ring or an engineering plastic buckle with a C-shaped or split annular structure in cross-section.

[0033] In another optional embodiment, the silicone layer 3 extends from the edge of the through hole 31 near the bottom of the plastic button 2 toward the upper surface of the silicone layer 3 to form a boss-type flange structure 32.

[0034] The outer wall of the plastic button 2 and the inner wall of the boss-type flange structure 32 form an interference fit.

[0035] In yet another optional embodiment, the double-sided adhesive 4 is an acrylic foam double-sided adhesive tape.

[0036] In another alternative embodiment, the top surface of the plastic button 2 is provided with anti-slip texture or markings.

[0037] In another optional embodiment, an elastic reset element (not shown in the figures) is provided between the annular limiting member 5 and the inner wall of the outer casing 1 for resetting the plastic button 2 after pressing.

[0038] In yet another alternative embodiment, the elastic reset element is a helical spring, a disc spring, or a silicone elastic post.

[0039] Example 2

[0040] This utility model discloses an electronic device, including the waterproof button structure described in Embodiment 1. The electronic device can be an earphone, a portable outdoor speaker, an industrial controller, or a medical handheld device, etc.

[0041] The contents disclosed in this utility model embodiment are merely preferred embodiments of this utility model and are only used to illustrate the technical solutions of this utility model, not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of this utility model.

Claims

1. A waterproof key structure, characterized by comprising: include: The outer casing has button mounting holes on it; A plastic button is movably nested within the button mounting hole; A silicone layer is tightly attached to and fixed to the inner wall of the button mounting hole, and a through hole is provided thereon; an interference fit is formed between the outer wall of the plastic button and the inner wall of the through hole of the silicone layer.

2. The waterproof key structure according to claim 1, characterized in that: It also includes double-sided adhesive, which is disposed between the inner wall surface of the outer casing and the silicone layer, for bonding and fixing the silicone layer to the inner wall surface of the button mounting hole.

3. The waterproof key structure according to claim 1, characterized in that: It also includes an annular limiting member; the bottom of the plastic button is provided with an annular groove, and the annular limiting member is fixed on the annular groove; the radial dimension of the annular limiting member is larger than the inner diameter of the through hole of the silicone layer, so as to limit the displacement range of the plastic button in the pressing direction and prevent the plastic button from falling out.

4. The waterproof key structure according to claim 3, characterized in that: The annular limiting component is a metal snap ring or an engineering plastic buckle, and its cross-section is C-shaped or a split annular structure.

5. The waterproof key structure according to claim 1, characterized in that: The silicone layer extends from the edge of the through hole near the bottom of the plastic button toward the upper surface of the silicone layer to form a boss-type flange structure; The outer wall of the plastic button and the inner wall of the boss-type flange structure form an interference fit.

6. The waterproof key structure according to claim 2, characterized in that: The double-sided adhesive is acrylic foam double-sided adhesive tape.

7. The waterproof key structure according to claim 1, characterized in that: The top surface of the plastic button is provided with anti-slip texture or markings.

8. The waterproof key structure according to claim 3, characterized in that: An elastic reset element is provided between the annular limiting member and the inner wall of the outer casing, which is used to reset the plastic button after pressing.

9. The waterproof key structure according to claim 8, characterized in that: The elastic reset element is a helical spring, a disc spring, or a silicone elastic column.

10. An electronic device, comprising: Includes a waterproof button structure as described in any one of claims 1 to 9.

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