Waterproof key structure

Abstract

The utility model discloses a waterproof button structure, which comprises a shell, a plastic support is embedded in the shell, waterproof foam is clamped and limited between the shell and the plastic support, a PCB (printed circuit board) is fixed on one side of the plastic support far away from the waterproof foam through screws, a soft rubber part is clamped and limited between the PCB and the plastic support, and the waterproof foam is clamped and limited between the PCB and the plastic support by pressing a metal button. The metal keys extrude the elastic caps to deform, the elastic caps trigger the corresponding film keys, so that the PCB receives an instruction to control operation of the electronic equipment, on the contrary, after the metal keys are loosened, the elastic caps deform and reset under the action of self elasticity, repeated pressing can be achieved, and the keys are good in touch feeling, high in durability and long in service life. The soft rubber piece plays a role in sealing a gap between the PCB and the plastic support, and the waterproof foam plays a role in sealing a gap between the metal shell and the plastic support, so that circuit damage caused by water vapor erosion can be prevented, and the large bank light beauty instrument can be operated by a wet hand.

Description

Technical Field

[0001] The utility model relates to the technical field of waterproof keys, in particular to a waterproof key structure. Background Art

[0002] Waterproof buttons are switch devices designed to operate in wet or underwater environments. They are commonly used in various life, industrial and outdoor equipment, such as diving equipment, ship control panels, underwater detection equipment, electronic equipment, etc. The shell design of waterproof buttons can prevent moisture from entering the internal circuit, thereby protecting electronic components from damage and can be used with confidence;

[0003] Chinese patent announcement number CN219110658U discloses an ultra-thin large-row light beauty instrument, which uses an adjustment button to control the control main board, switches the color of the light board, and controls the brightness of the light board, uses a battery board to provide power, and uses a display screen to display its light intensity and color to meet the needs of different states. At the same time, the present application sets it in a rectangular flat shape for greater portability, ease of production and use, and effectively solves the problem of people being able to maintain their skin while traveling and resting, thereby improving the practicality of the device;

[0004] The above technology controls the large row of light beauty instrument by operating the adjustment button, but the ordinary adjustment button cannot meet the user's requirement of wet hand operation, which easily causes water seepage and damage to the large row of light beauty instrument. Therefore, the utility model discloses a waterproof button structure for solving the above problem. Utility Model Content

[0005] The purpose of the utility model is to provide a waterproof key structure to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solutions: a waterproof key structure, comprising a shell, a plastic bracket embedded in the shell, a waterproof foam is clamped and limited between the shell and the plastic bracket, a PCB board is fixed by screws on a side of the plastic bracket away from the waterproof foam, a soft rubber part is clamped and limited between the PCB board and the plastic bracket, a metal key is arranged between the soft rubber part and the plastic bracket, and one end of the metal key is arranged to pass through the shell;

[0007] Among them, a plurality of membrane buttons are arranged on one side of the PCB board facing the soft plastic part, elastic caps are arranged on the soft plastic part corresponding to the membrane buttons, and the metal buttons are arranged in contact with the elastic caps.

[0008] Preferably, the PCB board is provided with two plug holes, and ends of the PCB board away from each other are provided with U-shaped grooves, screws are embedded in the U-shaped grooves, and gaskets are sleeved on the outer sides of the screws.

[0009] Preferably, a countersunk groove is provided on one side of the plastic bracket away from the waterproof foam, and cylindrical tubes which can be threadedly connected to the screw are provided at both ends of the countersunk groove, and corresponding inner key grooves are provided on the countersunk groove corresponding to the metal keys.

[0010] Preferably, the soft plastic part is coated on the front side of the PCB board, and a sealing convex ring is provided at the front edge of the soft plastic part, the same number of plug-in posts are provided on the corresponding plug-in holes on the soft plastic part, and countersunk holes are provided on some of the elastic caps.

[0011] Preferably, an extension edge is provided on the outer side of one end of the metal button located in the plastic bracket, the extension edge is located between the soft plastic part and the plastic bracket, and a connecting column is provided in the middle of the metal button corresponding to the adjacent countersunk holes.

[0012] Preferably, an adapting groove is provided on the inner side of the shell corresponding to the waterproof foam, an outer key groove is provided on the adapting groove corresponding to the metal key, and a through groove is provided in the middle of the waterproof foam to allow the metal key to pass through.

[0013] Preferably, the soft rubber part is made of silicone, the elastic cap is bowl-shaped, and its opening faces the PCB board.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model discloses a waterproof key structure. By pressing a metal key, the metal key squeezes an elastic cap to deform, and the elastic cap triggers a corresponding film key, so that a PCB board receives a command to control the operation of an electronic device. Conversely, after the metal key is released, the elastic cap deforms and resets under the action of its own elastic force, so that the key can be pressed repeatedly, and has a good touch, strong durability, and a long service life.

[0016] The utility model discloses a waterproof key structure, wherein the soft rubber part seals the gap between the PCB board and the plastic bracket, and the waterproof foam seals the gap between the metal shell and the plastic bracket, thereby preventing circuit damage caused by water vapor erosion, so that the large-row light beauty instrument can be operated with wet hands. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural disassembly diagram of a waterproof button structure of the utility model;

[0018] Figure 2 This is a partial structural cross-sectional view of a waterproof key structure of the utility model;

[0019] Figure 3 This is a cross-sectional view of the combined structure of a PCB board and soft plastic parts in a waterproof key structure of the utility model;

[0020] Figure 4 The utility model is a waterproof key structure with Figure 1 A magnified view of the structure at A;

[0021] Figure 5 The utility model is a waterproof key structure with Figure 2 A magnified view of the structure at B in FIG.

[0022] Figure 6 The utility model is a partial cross-sectional view of a shell in a waterproof key structure.

[0023] In the figure: 1. Shell; 11. Adapter slot; 12. External key slot; 2. Plastic bracket; 21. Countersunk slot; 22. Column tube; 23. Internal key slot; 3. Waterproof foam; 31. Through slot; 4. PCB board; 41. Membrane key; 42. Plug hole; 43. U-shaped slot; 44. Screw; 45. Gasket; 5. Soft rubber part; 51. Elastic cap; 52. Sealing convex ring; 53. Plug column; 54. Countersunk hole; 6. Metal key; 61. Extended edge; 62. Connecting column. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1-6 The utility model provides a technical solution: a waterproof key structure, comprising a shell 1, a plastic bracket 2 is embedded in the shell 1, a waterproof foam 3 is clamped and limited between the shell 1 and the plastic bracket 2, an adapting groove 11 is opened on the inner side of the shell 1 corresponding to the waterproof foam 3, an outer key groove 12 is opened on the adapting groove 11 corresponding to the metal key 6, and a through groove 31 is opened in the middle of the waterproof foam 3 to allow the metal key 6 to pass through;

[0026] Specifically, both sides of the waterproof foam 3 are coated with glue, which can bond and fix the shell 1 and the plastic bracket 2 to enhance the sealing effect. The through groove 31, the outer key groove 12 and the inner key groove 23 are aligned, and the metal key 6 can smoothly penetrate from the inside of the shell 1 to the outside, allowing the metal key 6 to move.

[0027] Furthermore, a PCB board 4 is fixed by screws on one side of the plastic bracket 2 away from the waterproof foam 3, and two plug holes 42 are provided on the PCB board 4. A U-shaped groove 43 is provided at one end of the PCB board 4 away from each other, and screws 44 are embedded in the U-shaped groove 43. The outer side of the screws 44 is sleeved with a gasket 45.

[0028] Specifically, the PCB board 4 is confined between the two screws 44, which helps to ensure the stability and fixation of the PCB board 4. The gasket 45 is an element used to increase the contact area between the screw 44 and the fixed surface, which can reduce the pressure of the screw 44 on the material, prevent damage, and help disperse the fastening force.

[0029] Furthermore, a countersunk groove 21 is provided on one side of the plastic bracket 2 away from the waterproof foam 3, and a column 22 which can be threadedly connected to the screw 44 is provided at both ends of the countersunk groove 21, and a corresponding inner key groove 23 is provided on the countersunk groove 21 corresponding to the metal key 6;

[0030] Specifically, the structural stability of the plastic bracket 2 can be ensured through the threaded connection between the screw 44 and the cylinder 22, so that the PCB board 4 and the plastic bracket 2 are fully fixed.

[0031] Furthermore, a soft plastic part 5 is clamped and limited between the PCB board 4 and the plastic bracket 2. The material of the soft plastic part 5 is silicone. The elastic cap 51 is bowl-shaped, and its opening faces the PCB board 4.

[0032] Specifically, the elastic cap 51 can deform and trigger the corresponding membrane button 41, so that the PCB board 4 receives the corresponding instruction. After releasing the metal button 6, the elastic cap 51 returns to its original state by its own elastic force, ensuring that the button has good touch and durability, while also supporting repeated pressing operations.

[0033] Furthermore, the soft plastic part 5 is coated on the front of the PCB board 4, and a sealing convex ring 52 is provided at the front edge of the soft plastic part 5, the soft plastic part 5 is provided with the same number of plug-in posts 53 corresponding to the plug-in holes 42, and countersunk holes 54 are opened on some of the elastic caps 51;

[0034] Specifically, the soft plastic part 5 is designed to cover the front side of the PCB board 4. This design can provide additional protection to prevent the electronic components on the PCB board 4 from being physically damaged or moisture intruded. The sealing convex ring 52 is pressed against the inner wall of the countersunk groove 21 to enhance the sealing of the contact gap. The plug-in column 53 is embedded in the plug-in hole 42 to facilitate the assembly of the soft plastic part 5 and the PCB board 4.

[0035] Furthermore, a metal button 6 is arranged between the soft plastic part 5 and the plastic bracket 2, one end of the metal button 6 is arranged outside the housing 1, a plurality of membrane buttons 41 are arranged on the side of the PCB board 4 facing the soft plastic part 5, an elastic cap 51 is arranged on the soft plastic part 5 corresponding to the membrane button 41, and the metal button 6 is arranged in contact with the elastic cap 51;

[0036] Specifically, a plurality of membrane keys 41 are arranged on the side of the PCB board 4 facing the soft plastic part 5. The membrane key 41 is a common input device component, usually composed of multiple layers of thin film materials, and each layer of film is arranged with conductive material. When the membrane key 41 is pressed, different conductive layers will come into contact, thereby changing the circuit state and realizing signal input. An elastic cap 51 is provided on the soft plastic part 5 corresponding to each membrane key 41. The elastic cap 51 is usually made of soft elastic material, such as silicone. Their main function is to provide deformation when the metal key 6 is pressed to trigger the membrane key 41.

[0037] Furthermore, an extension edge 61 is provided on the outer side of one end of the metal button 6 located in the plastic bracket 2, and the extension edge 61 is located between the soft plastic part 5 and the plastic bracket 2, and a connecting column 62 is provided in the middle of the metal button 6 corresponding to the adjacent countersunk hole 54;

[0038] Specifically, the extended edge 61 is used to prevent the metal button 6 from completely falling out, and the connecting column 62 is embedded in the countersunk hole 54, so that the metal button 6 and the soft plastic part 5 can be assembled into one body.

[0039] Working principle: When in use, the metal button 6 is pressed, and the metal button 6 squeezes the elastic cap 51 to deform. The elastic cap 51 triggers the corresponding membrane button 41, so that the PCB board 4 receives instructions to control the operation of the electronic device. Conversely, after releasing the metal button 6, the elastic cap 51 deforms and resets under the action of its own elastic force, and can be pressed repeatedly. Among them, the soft rubber part 5 plays a role in sealing the gap between the PCB board 4 and the plastic bracket 2, and the waterproof foam 3 plays a role in sealing the gap between the outer shell 1 and the plastic bracket 2, so that the electronic device has waterproof performance.

[0040] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0042] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waterproof key structure, comprising a housing (1), characterized in that: A plastic bracket (2) is embedded in the shell (1), a waterproof foam (3) is clamped and limited between the shell (1) and the plastic bracket (2), a PCB board (4) is fixed by screws on a side of the plastic bracket (2) away from the waterproof foam (3), a soft rubber part (5) is clamped and limited between the PCB board (4) and the plastic bracket (2), a metal button (6) is arranged between the soft rubber part (5) and the plastic bracket (2), and one end of the metal button (6) is arranged to protrude from the shell (1); A plurality of membrane buttons (41) are arranged on one side of the PCB board (4) facing the soft plastic part (5), elastic caps (51) are arranged on the soft plastic part (5) corresponding to the membrane buttons (41), and the metal buttons (6) are arranged in contact with the elastic caps (51).

2. A waterproof key structure according to claim 1, characterized in that: The PCB board (4) is provided with two plug holes (42), and ends of the PCB board (4) that are away from each other are provided with U-shaped grooves (43), screws (44) are embedded in the U-shaped grooves (43), and gaskets (45) are sleeved on the outer sides of the screws (44).

3. A waterproof key structure according to claim 2, characterized in that: A countersunk groove (21) is formed on a side of the plastic bracket (2) away from the waterproof foam (3), and columns (22) capable of being threadedly connected to the screws (44) are formed at both ends of the countersunk groove (21), and a corresponding inner key groove (23) is formed on the countersunk groove (21) corresponding to the metal key (6).

4. A waterproof key structure according to claim 3, characterized in that: The soft plastic part (5) is coated on the front side of the PCB board (4), and a sealing convex ring (52) is provided at the front edge of the soft plastic part (5), the soft plastic part (5) is provided with the same number of plug-in posts (53) corresponding to the plug-in holes (42), and countersunk holes (54) are provided on some of the elastic caps (51).

5. A waterproof key structure according to claim 4, characterized in that: An extension edge (61) is provided on the outer side of one end of the metal button (6) located inside the plastic bracket (2), the extension edge (61) is located between the soft plastic part (5) and the plastic bracket (2), and a connecting column (62) is provided in the middle of the metal button (6) corresponding to the adjacent countersunk hole (54).

6. A waterproof key structure according to claim 1, characterized in that: An adaption groove (11) is provided on the inner side of the housing (1) corresponding to the waterproof foam (3), an outer key groove (12) is provided on the adaption groove (11) corresponding to the metal key (6), and a through groove (31) is provided in the middle of the waterproof foam (3) to allow the metal key (6) to pass through.

7. A waterproof key structure according to claim 4, characterized in that: The material of the soft rubber part (5) is silica gel, the elastic cap (51) is bowl-shaped, and its opening faces the PCB board (4).

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