Automobile switch structure
By using integrated injection molding of buttons in an automotive switch structure and designing a light guide, the problems of increased mold quantity and light leakage were solved, resulting in improved aesthetics and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU CHANGJIANG AUTOMOBILE ELECTRONICS SYST
- Filing Date
- 2025-06-06
- Publication Date
- 2026-06-05
AI Technical Summary
The existing automotive interior central locking buttons use two-color injection molding plus insert secondary injection molding, which increases the number of molds and the requirements for high precision, and there is a light leakage problem between the backlight and the working indicator.
The button is injection molded in one piece, using an opaque base, a light guide made of light-transmitting material, and conductive rubber. The LED light is directed through the one-piece molded button cover and light guide, achieving separation of backlight and working indication, avoiding light leakage, and further optimizing light transmission through light guide pillars and light guide channels.
The number of injection molds was reduced, improving the aesthetics and stability of the buttons, avoiding light leakage between the backlight and the working indicator, and ensuring the wear resistance and indication effect of the characters.
Smart Images

Figure CN224328624U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of switch technology, and in particular to an automotive switch structure. Background Technology
[0002] As people's living standards continue to improve, family cars have become indispensable, and people have higher requirements for car interiors, making interior aesthetics a key competitive advantage for cars.
[0003] The existing main power window switch in automobiles includes a housing, a button assembly, and a circuit board located inside the housing. The button assembly includes four power window buttons and a central locking button. The central locking button has unlock and lock characters on it. The central locking button is slidably mounted on the housing. The circuit board has LED lights at the positions corresponding to the unlock and lock characters. The characters are lit up when the central locking button is pressed. The buttons are mostly backlit and have indicator requirements.
[0004] However, existing central locking buttons generally use two-color injection molding plus insert secondary injection molding, which increases the number of injection molds and also requires high precision for the secondary injection molded inserts. Summary of the Invention
[0005] The purpose of this utility model is to overcome the defects of the prior art by providing an automotive switch structure with an integrated injection-molded button, reducing the number of molds and satisfying the requirements of electroplating surface while having two different colored characters for backlighting and operation indication.
[0006] The technical solution of this utility model is as follows: A car switch structure includes a base, a circuit board disposed within the base, and a button slidably disposed on the base. The circuit board is provided with an LED light, conductive rubber, and contacts. The button includes an integrally formed base, a light guide, and a button cover. The base has an extension portion. The button cover is integrally formed on the base and covers the outer periphery of the extension portion. The light guide is integrally formed on the inner top wall of the button cover and is correspondingly arranged with the LED light to illuminate characters on the button cover. The base has a through groove, and the light guide portion is located within the through groove. The button cover has characters and a light-transmitting opening corresponding to the position of the light guide. The light guide portion is formed within the light-transmitting opening. The base has a pressing member, which is located above the conductive rubber and presses against the conductive rubber when the button is pressed down, causing the conductive rubber to deform and contact the contacts to conduct the circuit.
[0007] Using the above technical solution, the three parts of the button are integrally injection molded from three different materials. The base is made of opaque material to effectively avoid light leakage between backlight and working indicator. The light guide is made of light-transmitting material. The LED light provides working indicator and backlight for the button. The light guide is located inside the light-transmitting hole and is used to transmit the light from the LED to serve as a working indicator. The light guide is used to direct the light from the LED light to illuminate the characters on the button cover. Electroplating is performed on the button cover to make the characters more wear-resistant and more beautiful. The button is integrally injection molded, which reduces the number of injection molds and also reduces the size control between parts.
[0008] Further features of this invention: two light guides are provided, two corresponding through slots are provided, the two light guides are located in the corresponding through slots, the character corresponds to one of the light guides, the light-transmitting opening corresponds to the other light guide, and the upper end of the light guide is integrally formed in the light-transmitting opening.
[0009] By adopting the above-mentioned further settings, the problem of light leakage between the backlight and the working indicator is further effectively avoided. The light of the working indicator and the light of the illuminated characters enter from the corresponding through slots and exit through the corresponding light guides. The through slots are not connected to each other to avoid light leakage.
[0010] A further feature of this invention is that a light guide column is provided on the base corresponding to the position of the light-transmitting opening, so as to guide the light of the LED lamp to the light guide body.
[0011] By adopting the above further settings, the light guiding effect is further improved, and the working indicators are more obvious.
[0012] A further improvement of this utility model is as follows: both the left and right sides of the base are provided with sliding grooves and a pressing rod slidably disposed in the sliding grooves; two conductive rubber pieces and two contact points are provided respectively and located below the pressing rods; the base is also provided with a limiting groove communicating with the sliding grooves, and the pressing member is slidably disposed in the limiting groove.
[0013] With the above-mentioned further settings, the left side of the button illuminates the lock character, and the right side of the button illuminates the unlock character. The design of the slide and the pressure rod makes the button slide short and stable, and the limit groove can limit the stroke of the pressure component.
[0014] A further feature of this invention is that: both sides of the base are provided with extension pieces, and each extension piece is provided with a guide groove along its vertical direction; the base is provided with a corresponding guide block, and each guide block is located in the corresponding guide groove and slides in cooperation with the guide groove.
[0015] The above-mentioned further design serves as a guide, making the structure more stable when the button is pressed down, and preventing the button from detaching from the base when resetting.
[0016] Further features of this invention: the base is provided with a first light guide channel, a second light guide channel and a third light guide channel, and the light guide channels are not interconnected. The circuit board is provided with LED lights corresponding to each light guide channel. The light-transmitting opening corresponds to the first light guide channel. The characters include a locking character and an unlocking character. The locking character corresponds to the second light guide channel and the unlocking character corresponds to the third light guide channel.
[0017] By adopting the above-mentioned further settings, the problem of light leakage between the backlight and the working indicator is effectively avoided. The light of the LED light corresponding to the working indicator enters the first light guide channel and is transmitted through the light guide column and the light guide body. The light of the LED light corresponding to the locked character enters the second light guide channel, and the light of the LED light corresponding to the unlocked character enters the third light guide channel and illuminates the character through the light guide body. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of a specific embodiment of the present utility model;
[0019] Figure 2 This is a schematic diagram of the button in a specific embodiment of the present utility model;
[0020] Figure 3 This is a schematic diagram of the button in a specific embodiment of the present utility model;
[0021] Figure 4 This is a schematic diagram of the button and the pressure bar in a specific embodiment of this utility model;
[0022] Figure 5 This is a schematic diagram of the base according to a specific embodiment of the present utility model;
[0023] Figure 6 This is a schematic diagram of the circuit board and the pressure bar in a specific embodiment of this utility model.
[0024] In the diagram, 1. Base; 11. Light guide post; 12. Slide groove; 13. Pressing rod; 14. Limiting groove; 15. Guide block; 16. First light guide channel; 17. Second light guide channel; 18. Third light guide channel; 2. Circuit board; 21. LED light; 22. Conductive rubber; 3. Button; 31. Base; 311. Extension; 312. Through groove; 313. Pressing part; 314. Extension piece; 315. Guide slide groove; 32. Light guide body; 33. Button cover; 331. Character; 332. Light transmission port. Detailed Implementation
[0025] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0026] It should be noted that all directional indicators (such as up, down, forward, backward, etc.) in the description of this utility model are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0027] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a number" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0028] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0029] like Figure 1-6As shown, an automotive switch structure includes a base 1, a circuit board 2 disposed within the base 1, and a button 3 slidably disposed on the base 1. The circuit board 2 is provided with an LED light 21, conductive rubber 22, and contacts. The button 3 includes an integrally formed base 31, a light guide 32, and a button cover 33. The base 31 has an extension 311. The button cover 33 is integrally formed on the base 31 and covers the outer periphery of the extension 311. The light guide 32 is integrally formed on the inner top wall of the button cover 33 and is correspondingly arranged with the LED light 21 to illuminate the character 331 on the button cover 33. The base 31 has a through groove 312, and part of the light guide 32 is located in the through groove 312. The button cover 33 has the character 331 and a light-transmitting opening 332 corresponding to the position of the light guide 32, and part of the light guide 32 is formed in the light-transmitting opening 33. Inside the button 3, a pressing member 313 is provided on the base 31. The pressing member 313 is located above the conductive rubber 22 and presses against the conductive rubber 22 when the button 3 is pressed down, causing the conductive rubber 22 to deform and contact the contact to conduct the circuit. The three parts of the button 3 are integrally injection molded from three different materials. The base 31 is made of opaque material to effectively avoid the problem of light leakage between backlight and working indicator. The light guide 32 is made of light-transmitting material. The LED light 21 provides working indicator and backlight for the button 3. The light guide 32 is located inside the light-transmitting hole 332 to transmit the light of the LED to serve as a working indicator. The light guide 32 is used to cause the light of the LED light 21 to illuminate the character 331 on the button cover 33. Electroplating is performed on the button cover 33 to make the character 331 more wear-resistant and more beautiful. The button is integrally injection molded, which reduces the number of injection molds and also reduces the size control between parts.
[0030] Two light guides 32 are provided, and two corresponding through slots 312 are provided. The two light guides 32 are located in the corresponding through slots 312. The character 331 corresponds to one of the light guides 32, and the light-transmitting opening 332 corresponds to the other light guide 32. The upper end of the light guide 32 is integrally formed in the light-transmitting opening 332, which further effectively avoids the problem of light leakage between the backlight and the work indicator. The light of the work indicator and the light that illuminates the character 331 enter from the corresponding through slot 312 and exit through the corresponding light guide 32. The through slots 312 are not interconnected to avoid light leakage.
[0031] A light guide post 11 is provided on the base 1 at the position corresponding to the light-transmitting opening 332 to guide the light from the LED lamp 21 to the light guide body 32, further improving the light guiding effect and making the working indication more obvious. The base 1 has sliding grooves 12 on both the left and right sides, and a pressure rod 13 slidably disposed within the sliding grooves 12. Two conductive rubber pieces 22 and two contact points are provided, located below the pressure rod 13. The base 1 also has a limiting groove 14 communicating with the sliding groove 12. The pressure member 313 is slidably disposed within the limiting groove 14. Pressing the button illuminates the locking character 331 on the left side. The right side illuminates the unlock character 331. The sliding groove 12 and the pressure rod 13 make the button's sliding stroke short and its stability good. The limiting groove 14 can limit the stroke of the pressure member 313. Both sides of the base 31 are provided with extension pieces 314, and each extension piece 314 is provided with a guide groove 315 along its vertical direction. The base 1 is provided with a corresponding guide block 15. Each guide block 15 is located in the corresponding guide groove 315 and slides and cooperates with the guide groove 315 to play a guiding role, making the structure more stable when the button is pressed down, and preventing the button from detaching from the base 1 when it is reset.
[0032] The base 1 is provided with a first light guide channel 16, a second light guide channel 17, and a third light guide channel 18. The light guide channels are not interconnected. The circuit board 2 is provided with LED lights 21 corresponding to each light guide channel. The light-transmitting port 332 corresponds to the first light guide channel 16. The character 331 includes a locked character 331 and an unlocked character 331. The locked character 331 corresponds to the second light guide channel 17, and the unlocked character 331 corresponds to the third light guide channel 18. This effectively avoids the problem of light leakage between the backlight and the working indicator. The light from the LED light 21 corresponding to the working indicator enters the first light guide channel 16 and is transmitted through the light guide column 11 and the light guide body 32. The light from the LED light 21 corresponding to the locked character 331 enters the second light guide channel 17, and the light from the LED light 21 corresponding to the unlocked character 331 enters the third light guide channel 18. The light from the LED light 21 illuminates the character 331 through the light guide body 32.
Claims
1. A car switch structure, comprising a base (1), a circuit board (2) disposed within the base (1), and a button (3) slidably disposed on the base (1), wherein the circuit board (2) is provided with an LED light (21), conductive rubber (22), and contacts, characterized in that, The button (3) includes an integrally formed base (31), a light guide (32), and a button cover (33). The base (31) has an extension (311). The button cover (33) is integrally formed on the base (31) and covers the outer periphery of the extension (311). The light guide (32) is integrally formed on the inner top wall of the button cover (33) and is correspondingly arranged with the LED light (21) to cause the light from the LED light (21) to illuminate the characters (331) on the button cover (33). The base (31) has an opening There is a through groove (312), and the light guide (32) is located in the through groove (312). The button cover (33) is provided with characters (331) and light-transmitting openings (332) corresponding to the position of the light guide (32). The light guide (32) is formed in the light-transmitting openings (332). The base (31) is provided with a pressing member (313). The pressing member (313) is located above the conductive rubber (22) and presses against the conductive rubber (22) when the button (3) is pressed down, causing the conductive rubber (22) to deform and contact the contact to conduct the circuit.
2. The automotive switch structure according to claim 1, characterized in that, Two light guides (32) are provided, and two corresponding through slots (312) are provided. The two light guides (32) are located in the corresponding through slots (312). The character (331) corresponds to one of the light guides (32), and the light-transmitting opening (332) corresponds to the other light guide (32). The upper end of the light guide (32) is integrally formed in the light-transmitting opening (332).
3. The automotive switch structure according to claim 1 or 2, characterized in that, The base (1) is provided with a light guide column (11) at the position corresponding to the light-transmitting opening (332) to guide the light of the LED lamp (21) to the light guide body (32).
4. The automotive switch structure according to claim 1 or 2, characterized in that, The base (1) is provided with a sliding groove (12) on both the left and right sides and a pressing rod (13) slidably disposed in the sliding groove (12). The conductive rubber (22) and the contact point are provided in twos and located below the pressing rod (13). The base (1) is also provided with a limiting groove (14) communicating with the sliding groove (12). The pressing member (313) is slidably disposed in the limiting groove (14).
5. The automotive switch structure according to claim 1 or 2, characterized in that, Both sides of the base (31) are provided with extension pieces (314), and each extension piece (314) is provided with a guide groove (315) along its vertical direction. The base (1) is provided with a corresponding guide block (15), and each guide block (15) is located in the corresponding guide groove (315) and slides in cooperation with the guide groove (315).
6. The automotive switch structure according to claim 1 or 2, characterized in that, The base (1) is provided with a first light guide channel (16), a second light guide channel (17) and a third light guide channel (18). The light guide channels are not interconnected. The circuit board (2) is provided with LED lights (21) corresponding to each light guide channel. The light-transmitting port (332) corresponds to the first light guide channel (16). The character (331) includes a locking character (331) and an unlocking character (331). The locking character (331) corresponds to the second light guide channel (17), and the unlocking character (331) corresponds to the third light guide channel (18).