Waterproof light guide key structure of electronic product

Abstract

The utility model discloses a waterproof light guide key structure of an electronic product, which comprises a shell, a PCB (printed circuit board) is arranged in the shell, a key switch and an LED (light-emitting diode) lamp are arranged on the PCB, a key hole corresponding to the position of the key switch is arranged on the side surface of the shell, and the LED lamp is arranged in the key hole. And light guide keys which are clamped and fixed with the inner side of the shell, correspond to the key switches and the LED lamps and are made of silica gel materials are arranged in the key holes in an interference fit manner. According to the utility model, only one key hole is arranged, the good astigmatism of the silica gel material is matched with the structural modeling of the light guide key, the light guide effect of the function indicating lamp with a sense of science and technology is obtained, and the good ductility of the silica gel material is matched with the related structure of the shell, so that the key part is easily assembled, and the waterproof grade of the product can be improved; and in combination with the good buffering performance of the silica gel material, components such as the touch switch cannot be damaged in the falling or transportation vibration process of the product, and the product quality is improved.

Description

Technical Field

[0001] The utility model relates to an electronic product component structure, in particular to a waterproof light-guiding key structure of an electronic product. Background Art

[0002] With the continuous updating, enrichment and improvement of the functions of electronic products. The expression form of the functional interaction buttons of electronic products is also constantly changing, and the functional requirements are also constantly upgrading. For the structure of electronic products that need to indicate the function of buttons, it is usually implemented by using a spring-arm type mechanical button structure and a corresponding indicator light hole. The spring-arm type mechanical button structure is generally composed of a key switch on the PCB board and a key spring arm at the corresponding position of the shell. The key spring arm is fixed to the shell by hot melting or screws. The main defects are: 1. After the button is assembled, it is a gap fit, and the corresponding assembly position has no waterproof function; 2. The assembly process is relatively time-consuming; 3. When the product falls or is shaken during transportation, the key switch is prone to damage, resulting in product failure. The indicator light is placed on the PCB board to correspond to the function of the push button switch. A through hole is opened on the shell corresponding to the position of the indicator light. The light of the indicator light can directly pass through the through hole. This is a direct-transmitting indication. The viewing angle of the indicator light is small. You need to face the through hole to see the indicator light, which may affect the indication effect in the application. Another way is to independently place a transparent plastic light guide column in the through hole, which is also fixed to the shell by hot melting or screws. The light of the indicator light is presented on the surface of the shell by the transparent plastic light guide column, which increases the viewing angle of the indicator light. However, there are also defects such as time-consuming light guide column configuration process, relatively dazzling light guide effect, and insufficient soft light, resulting in a poor user experience. Utility Model Content

[0003] In view of the problems existing in the above-mentioned prior art, the utility model provides a waterproof light-guiding key structure for electronic products, which utilizes the good light diffusion and ductility of the silicone material itself, combined with the special structural shape of the key parts, to achieve simple assembly between the key structure and the shell, thereby enhancing the technological light-guiding effect on the basis of ensuring the assembly strength and improving the product's waterproof level.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A waterproof light-guiding key structure for an electronic product comprises a shell, a PCB board is arranged in the shell, a key switch and an LED lamp with related functions are arranged on the PCB board, a key hole corresponding to the position of the key switch is opened on the side of the shell, a light-guiding key made of silicone material is arranged in the key hole through interference fit and fixed to the inner side of the shell and corresponding to the key switch and the LED lamp; the light-guiding key comprises a key body matching the size of the key hole, and a light-guiding arm which is an integral structure with the key body and corresponds to the position of the LED lamp, and an oblique high-light reflecting surface is arranged at one end of the light-guiding arm close to the LED lamp, which is used to reflect the light emitted by the LED lamp to the key body.

[0006] Specifically, a key positioning column is arranged on the inner side of the shell near the key hole, and a clamping block is arranged at the end of the key positioning column; a key connecting arm matching the position of the key positioning column is arranged on the key body, and a clamping hole matching the size of the key positioning column is opened on the key connecting arm, wherein the clamping block is slightly larger than the clamping hole to facilitate clamping and fixing the key connecting arm.

[0007] Preferably, the button positioning column and the button connecting arm are configured into two groups, so as to facilitate positioning and fixing the button body from both sides.

[0008] Specifically, the position of the high-gloss reflective surface corresponds to the position of the LED lamp, and the high-gloss reflective surface is configured to be inclined at 45°, thereby reflecting the light of the LED lamp vertically onto the key body. Through the good light scattering performance of the silicone material itself, a soft and highly technological lighting effect is presented inside the key body.

[0009] Specifically, the key body includes a key ring wall, a key surface and a key column in an integrated structure, wherein the key ring wall is cylindrical, and its outer diameter matches the inner diameter of the key hole, the key surface is located at one end of the key ring wall facing the outside of the shell, the key column is coaxially located in the key ring wall and connected to the inner side of the key surface, and the end of the key column corresponds to the key switch in pressing contact.

[0010] Specifically, the light guide arm is connected to the outer side of the key ring wall.

[0011] Furthermore, an interference seal ring is provided in the key hole, and the interference seal ring is used to realize interference fit assembly between the outer wall of the key body and the inner wall of the key hole, thereby effectively improving the waterproof performance of the key hole position.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model is improved based on the structure of the existing button with indicator light, and only one key hole is set. The good light diffusion of the silicone material is combined with the structural shape of the light-guiding button to obtain a highly technological functional indicator light-guiding effect. The good ductility of the silicone material is combined with the relevant structure of the shell to achieve easy assembly of the button part and improve the waterproof level of the product. Combined with the good buffering performance of the silicone material, it is ensured that the product will not damage the touch switch and other components during the fall or transportation shock process, thereby improving the product quality. The utility model has a simple and ingenious structural design, complete functions, and strong structural stability. While better realizing the product function, it can greatly improve the assembly efficiency and reduce the production cost. It is suitable for application in the key structure design of electronic products. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The figure is a schematic diagram of the structure of an existing key structure with an indicator light.

[0015] Figure 2 It is a schematic diagram of the overall structure of one side of an embodiment of the utility model.

[0016] Figure 3 for Figure 2 A partial enlarged view of the middle button structure.

[0017] Figure 4 It is a structural schematic diagram of the other side of the embodiment of the utility model.

[0018] Figure 5 for Figure 4 A partial enlarged view of the middle button structure.

[0019] Figure 6 It is an exploded view of an embodiment of the present utility model.

[0020] Figure 7 This is a structural view of the key hole part in the embodiment of the utility model.

[0021] Figure 8 This is a structural view of the light-guiding key in an embodiment of the utility model.

[0022] In the above drawings, the component names corresponding to the reference numerals are as follows:

[0023] 1-housing, 2-PCB board, 3-button switch, 4-LED lamp, 5-large hole, 6-small hole, 7-elastic arm button, 8-elastic arm, 9-screw; 10-light guide button, 11-button body, 12-light guide arm, 13-button connecting arm, 14-button ring wall, 15-button surface, 16-button column, 17-high light reflective surface, 18-card hole, 19-interference sealing ring, 20-key hole, 21-button positioning column, 22-card block. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments. The implementation methods of the present invention include but are not limited to the following embodiments.

[0025] Example

[0026] like Figure 1 The figure shows a schematic diagram of a key structure with an indicator light in an existing electronic product. A PCB board 2 is arranged inside a housing 1. Functionally related key switches 3 and LED lights 4 are arranged near the PCB board 2. A large hole 5 and a small hole 6 are arranged on the side of the housing 1 corresponding to the key switch and the LED light, respectively. The large hole is provided with a spring-arm key 7, and the small hole can directly transmit the light of the LED light; the spring-arm key is embedded in the large hole, and its spring arm 8 is connected and fixed in the housing by screws 9.

[0027] like Figures 2 to 8 As shown, the waterproof light-guiding key structure of the electronic product mainly includes a housing 1, a PCB board 2, a key switch 3, an LED light 4, a light-guiding key 10 and other components. The housing can be composed of an upper cover and a lower cover. The PCB board is placed inside the housing, and components and circuits for realizing the functions of the electronic product are arranged thereon. The key switch and the LED light are arranged close to each other on the PCB board near the side of the housing as functionally related components. Only one key hole 20 is arranged on the side of the housing corresponding to the position of the key switch, which is used to place the light-guiding key, and a separate indicator light hole is omitted.

[0028] The light-guiding key is made of silicone material as a whole, and the good light diffusion and ductility of the silicone material itself are combined with the specific structural design of the key to realize various practical functions such as key, light guide, simple assembly, waterproof, etc. The light-guiding key mainly includes three parts: a key body 11, a light guide arm 12, and a key connecting arm 13 in an integrated structure. When assembled, the key body is embedded in the key hole, and the key connecting arm is used for overall fixed connection. The light guide arm guides the light emitted by the LED lamp to the key body for presentation. The key body is composed of a key ring wall 14, a key surface 15, and a key column 16. The key ring wall 14 is cylindrical, and the wall thickness can be configured according to the key force requirements. Its outer diameter matches the inner diameter of the key hole 20. The key surface 15 is located at one end of the key ring wall 14, and the end faces the outside of the shell after assembly. The key column 16 is coaxially located in the key ring wall 14 and one end is connected to the inner side of the key surface 15. The other end of the key column 16 is in a pressing contact corresponding relationship with the key switch 3 after assembly, thereby realizing a normal key function.

[0029] The light guide arm 12 is generally strip-shaped, with a width that matches the size of the LED. One end of the light guide arm is connected to the outside of the key ring wall 14, and the other end extends straight to the front of the LED lamp. An oblique high-light reflective surface 17 is provided on the side of the light guide arm that is not facing the LED lamp, which is used to reflect the light emitted by the LED lamp to the key body to achieve the light guide function. The oblique angle can be configured to 45°, so that the light of the LED lamp can be vertically reflected to the key body. Through the good light diffusion performance of the silicone material itself, a soft and highly technological lighting effect is presented in the key body.

[0030] The key connecting arm 13 is also connected to the outside of the key ring wall 14, avoiding the position of the light guide arm, and is generally configured as a pair of opposite ones, and a clamping hole 18 is opened on it, so as to fix the key body 11 from both sides. Correspondingly, a key positioning column 21 is correspondingly arranged on the inner side wall of the housing 1 around the key hole 20, and the size matches the clamping hole. The key connecting arm 13 is clamped with the key positioning column through the clamping hole to realize the positioning and fixing of the key body 11; in order to prevent the key connecting arm from falling off, a clamping block 22 is arranged on the key positioning column 21, which is slightly larger than the clamping hole 18, to form a limited fixation, and by utilizing the good ductility of the silicone material, the clamping hole of the key connecting arm can also be easily passed through the clamping block and placed on the key positioning column.

[0031] To realize the waterproof function, the key hole 20 can be closed by using an interference fit between the outer diameter of the key ring wall 14 and the inner diameter of the key hole 20. In this way, the key body 11 can be easily embedded in the key hole 20 by using the good ductility of the silicone material during assembly, and the key operation of pressing the key column will not be affected. Alternatively, a normal fit method can be used, and an interference seal ring 19 can be set in the key hole 20, so that the outer wall of the key body 11 and the interference seal ring 19 form an interference fit assembly relationship to realize the closure of the key hole 20, and both can achieve a waterproof level of IPX5 or above.

[0032] And through the above design, the unit price cost of parts is reduced, the difficulty of assembly is reduced, and the one-piece light-guiding key can save mold opening costs, the overall production cost is reduced, and the electronic products obtained have high waterproof performance, the key part is not afraid of collision, and the lighting effect of the key body is soft and very technological, which can effectively enhance the user experience.

[0033] The above embodiments are only preferred embodiments of the present utility model and are not intended to limit the protection scope of the present utility model. Any changes that adopt the design principles of the present utility model and are made through non-creative labor on this basis should fall within the protection scope of the present utility model.

Claims

1. A waterproof light-guiding key structure for electronic products, comprising a housing, a PCB board is arranged in the housing, and a key switch and an LED light with associated functions are arranged on the PCB board, characterized in that: A key hole corresponding to the position of the key switch is provided on the side of the shell, and a light-guiding key made of silicone material is placed in the key hole by interference fit and is clamped and fixed to the inner side of the shell and corresponds to the key switch and the LED lamp; the light-guiding key includes a key body matching the size of the key hole, and a light-guiding arm which is an integral structure with the key body and corresponds to the position of the LED lamp, and an oblique high-light reflecting surface is provided at one end of the light-guiding arm close to the LED lamp, which is used to reflect the light emitted by the LED lamp to the key body.

2. The waterproof light-guiding key structure for electronic products according to claim 1, characterized in that: A key positioning column is arranged on the inner side of the shell near the key hole, and a clamping block is arranged at the end of the key positioning column; a key connecting arm matching the position of the key positioning column is arranged on the key body, and a clamping hole matching the size of the key positioning column is opened on the key connecting arm.

3. The waterproof light-guiding key structure of electronic products according to claim 2, characterized in that: The button positioning columns and the button connecting arms are configured into two groups.

4. The waterproof light-guiding key structure for electronic products according to claim 1, characterized in that: The position of the high-light reflecting surface corresponds to the position of the LED lamp, and the high-light reflecting surface is configured to be inclined at 45°.

5. The waterproof light-guiding key structure for electronic products according to claim 1, characterized in that: The key body includes a key ring wall, a key surface and a key column in an integrated structure, wherein the key ring wall is cylindrical, and its outer diameter matches the inner diameter of the key hole, the key surface is located at one end of the key ring wall facing the outside of the shell, the key column is coaxially located in the key ring wall and connected to the inner side of the key surface, and the end of the key column corresponds to the key switch in pressing contact.

6. The waterproof light-guiding key structure for electronic products according to claim 5, characterized in that: The light guide arm is connected to the outer side of the key ring wall.

7. The waterproof light-guiding key structure for electronic products according to any one of claims 1 to 6, characterized in that: An interference sealing ring is arranged in the key hole.

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