A type of automotive push switch

Abstract

This utility model relates to the field of push-button switch technology, and particularly to an automotive push-button switch, including a button cap, a slider, a waterproof rubber sheet, and a PCBA board. The switch features two tactile feedback protrusions on the side of the waterproof rubber sheet near the slider, and a dome switch and conductive metal particles on the side of the waterproof rubber sheet away from the slider. The dome switch and conductive metal particles are positioned one-to-one with the two tactile feedback protrusions, ensuring that when the button cap is pressed, the PCBA board contacts either the dome switch or the conductive metal particles, achieving signal conduction. This structural design ensures signal conduction as long as either the dome switch or the conductive metal particles contact the PCBA board, thus eliminating the risk of poor contact and conduction due to dust adhering to the dome switch. Furthermore, the combination of the dome switch and conductive metal particles avoids the problem of dual tactile feedback.

Description

Technical Field

[0001] This utility model relates to the field of push-button switch technology, and in particular to an automotive push-button switch. Background Technology

[0002] The traditional push-button switch structure in automobiles uses a dome switch to achieve the push-button switch conduction function. However, when the dome switch is pressed, dust can adhere to the gold fingers of the printed circuit board, posing a risk of poor conduction. Pressing a single dome switch requires too little force and has a poor feel. Pressing a double dome switch can meet the design requirements in terms of force and feel, but the two contacts may not make contact at the same time, resulting in a problem of dual feel. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an automotive push-button switch that can solve the risk of poor contact and conduction caused by dust adhering to the dome switch and avoid the problem of dual tactile sensation.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] An automotive push-button switch includes a button cap, a slider, a waterproof rubber sheet, and a PCBA board. The slider is located between the button cap and the waterproof rubber sheet, and the PCBA board is located on the side of the waterproof rubber sheet away from the slider. The button cap is fixedly connected to the slider so that when the button cap is pressed, the force applied by the button cap is transmitted to the slider and acts on the waterproof rubber sheet.

[0006] The waterproof rubber sheet has two force-sensitive rebound bumps on the side near the slider, and a dome switch and a conductive metal particle on the side away from the slider. The dome switch and the conductive metal particle are respectively set to correspond one-to-one with the positions of the two force-sensitive rebound bumps, so that when the button cap is pressed, the PCBA board makes contact with either the dome switch or the conductive metal particle to achieve signal conduction.

[0007] Furthermore, the waterproof rubber sheet is provided with a first vent groove on the side away from the slider. One end of the first vent groove is connected to the force-feel rebound protrusion of the dome switch, and one end of the first vent groove is close to the connection between the dome switch and the force-feel rebound protrusion.

[0008] Furthermore, the horizontal cross-sectional shape of the first exhaust channel is L-shaped, and the other end of the first exhaust channel extends to the edge of the waterproof rubber sheet.

[0009] Furthermore, a first groove is provided on the side of the waterproof rubber sheet away from the slider. The first groove is connected to the other end of the first venting groove, and the depth of the first groove is greater than the depth of the first venting groove.

[0010] Furthermore, a second venting groove is provided on the side of the waterproof rubber sheet away from the slider, and one end of the second venting groove is connected to a force-sensitive rebound protrusion with conductive metal particles.

[0011] Furthermore, the horizontal cross-sectional shape of the second exhaust channel is L-shaped, and the other end of the second exhaust channel extends to the edge of the waterproof rubber sheet.

[0012] Furthermore, a second groove is provided on the side of the waterproof rubber sheet away from the slider. The second groove is connected to the other end of the second venting groove, and the groove depth of the second groove is greater than the groove depth of the second venting groove.

[0013] Furthermore, the waterproof rubber sheet is a hollow rubber shell with an opening at one end, and the PCBA board is placed over the opening of the rubber shell and seals the opening.

[0014] Furthermore, the force-feel rebound bump is a pressing boss formed by the outward protrusion of the inner surface corresponding to the opening of the rubber shell. The pressing boss is hollow inside and has an opening at one end near the PCBA board.

[0015] The dome switch is disposed at the opening of the corresponding pressing boss, and the conductive metal particles are disposed on the inner surface corresponding to the opening of the corresponding pressing boss.

[0016] Furthermore, the PCBA board is provided with dome gold fingers and metal particle gold fingers that are compatible with the dome and conductive metal particles.

[0017] The beneficial effects of this utility model are as follows:

[0018] This design features two tactile feedback bumps on the side of the waterproof rubber sheet closest to the slider, and a dome switch and conductive metal particles on the side of the waterproof rubber sheet furthest from the slider. The dome switch and conductive metal particles are positioned one-to-one with the two tactile feedback bumps, ensuring that when the button cap is pressed, the PCBA board makes contact with either the dome switch or the conductive metal particle, thus achieving signal conduction. This structural design eliminates the risk of poor contact and conduction due to dust adhering to the dome switch. Furthermore, the combination of the dome switch and conductive metal particles avoids the problem of dual tactile feedback. Attached Figure Description

[0019] Figure 1 This is an exploded view of the automotive push-button switch of this utility model;

[0020] Figure 2This is a schematic diagram of the waterproof rubber sheet of the automotive push switch of this utility model;

[0021] Figure 3 This is a schematic diagram of the waterproof rubber sheet of the automotive push switch of this utility model;

[0022] Figure 4 This is a schematic diagram of the PCBA board for the automotive push switch of this utility model.

[0023] Figure 5 This is a schematic diagram showing the assembly of the various components of the automotive push-button switch of this utility model.

[0024] Label Explanation:

[0025] 1. Button cap; 2. Slider; 3. Waterproof rubber plate; 31. Force-sensitive rebound bump; 32. Dome switch; 33. Conductive metal particles; 34. First venting groove; 35. First groove; 36. Second venting groove; 37. Second groove; 4. PCBA board; 41. Dome switch gold fingers; 42. Metal particle gold fingers. Detailed Implementation

[0026] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0027] Please refer to Figures 1 to 5 An automotive push-button switch includes a button cap, a slider, a waterproof rubber sheet, and a PCBA board. The slider is located between the button cap and the waterproof rubber sheet, and the PCBA board is located on the side of the waterproof rubber sheet away from the slider. The button cap is fixedly connected to the slider so that when the button cap is pressed, the force applied by the button cap is transmitted to the slider and acts on the waterproof rubber sheet.

[0028] The waterproof rubber sheet has two force-sensitive rebound bumps on the side near the slider, and a dome switch and a conductive metal particle on the side away from the slider. The dome switch and the conductive metal particle are respectively set to correspond one-to-one with the positions of the two force-sensitive rebound bumps, so that when the button cap is pressed, the PCBA board makes contact with either the dome switch or the conductive metal particle to achieve signal conduction.

[0029] As can be seen from the above description, the beneficial effects of this utility model are as follows:

[0030] This design features two tactile feedback bumps on the side of the waterproof rubber sheet closest to the slider, and a dome switch and conductive metal particles on the side of the waterproof rubber sheet furthest from the slider. The dome switch and conductive metal particles are positioned one-to-one with the two tactile feedback bumps, ensuring that when the button cap is pressed, the PCBA board makes contact with either the dome switch or the conductive metal particle, thus achieving signal conduction. This structural design eliminates the risk of poor contact and conduction due to dust adhering to the dome switch. Furthermore, the combination of the dome switch and conductive metal particles avoids the problem of dual tactile feedback.

[0031] Furthermore, the waterproof rubber sheet is provided with a first vent groove on the side away from the slider. One end of the first vent groove is connected to the force-feel rebound protrusion of the dome switch, and one end of the first vent groove is close to the connection between the dome switch and the force-feel rebound protrusion.

[0032] As can be seen from the above description, by setting the first exhaust groove, the gas generated by pressing can be discharged in time during the pressing process, avoiding the accumulation of gas inside the switch and the resulting pressure, which would affect the pressing feel and switch performance. At the same time, the discharge of gas can effectively reduce the risk of dust and other impurities adhering to the contact area between the PCBA board and the dome switch, ensuring the stability of signal transmission.

[0033] Furthermore, the horizontal cross-sectional shape of the first exhaust channel is L-shaped, and the other end of the first exhaust channel extends to the edge of the waterproof rubber sheet.

[0034] As can be seen from the above description, the L-shaped design makes the exhaust path longer, which can exhaust the gas more fully and enhance the exhaust effect; the first exhaust groove extends to the edge of the waterproof rubber plate, which facilitates the direct exhaust of gas to the outside of the switch, further improving the dustproof performance and preventing dust from accumulating inside the switch.

[0035] Furthermore, a first groove is provided on the side of the waterproof rubber sheet away from the slider. The first groove is connected to the other end of the first venting groove, and the depth of the first groove is greater than the depth of the first venting groove.

[0036] As can be seen from the above description, the first groove can serve as a temporary storage space for gas, accommodating more gas at the moment of pressing and preventing the gas from affecting the pressing feel due to untimely discharge; at the same time, the greater groove depth can also play a certain role in blocking and settling dust entering the first exhaust groove, further improving the dustproof effect.

[0037] Furthermore, a second venting groove is provided on the side of the waterproof rubber sheet away from the slider, and one end of the second venting groove is connected to a force-sensitive rebound protrusion with conductive metal particles.

[0038] As can be seen from the above description, the second exhaust groove can achieve good exhaust and dust prevention in the area where the conductive metal particles are located, ensuring the cleanliness of the contact area between the conductive metal particles and the PCBA board, and ensuring the reliability of signal conduction.

[0039] Furthermore, the horizontal cross-sectional shape of the second exhaust channel is L-shaped, and the other end of the second exhaust channel extends to the edge of the waterproof rubber sheet.

[0040] As can be seen from the above description, the L-shaped second exhaust groove can effectively extend the exhaust path, improve exhaust efficiency, smoothly discharge gas to the outside of the switch, reduce the possibility of dust entering, and ensure a clean internal environment of the switch.

[0041] Furthermore, a second groove is provided on the side of the waterproof rubber sheet away from the slider. The second groove is connected to the other end of the second venting groove, and the groove depth of the second groove is greater than the groove depth of the second venting groove.

[0042] As can be seen from the above description, the second groove serves to temporarily store gas and block dust. Working in conjunction with the second exhaust groove, it further optimizes the exhaust and dust prevention performance of the area with conductive metal particles, thereby improving the overall stability of the switch.

[0043] Furthermore, the waterproof rubber sheet is a hollow rubber shell with an opening at one end, and the PCBA board is placed over the opening of the rubber shell and seals the opening.

[0044] As described above, the waterproof rubber sheet is designed as a hollow rubber shell with an opening at one end. The PCBA board covers the opening and seals it. This structure makes the waterproof rubber sheet form a relatively closed space, which provides good waterproof protection for the internal PCBA board, dome switch, and conductive metal particles, preventing moisture from entering the switch and damaging the electronic components, and improving the service life and reliability of the switch in humid environments.

[0045] Furthermore, the force-feel rebound bump is a pressing boss formed by the outward protrusion of the inner surface corresponding to the opening of the rubber shell. The pressing boss is hollow inside and has an opening at one end near the PCBA board.

[0046] The dome switch is disposed at the opening of the corresponding pressing boss, and the conductive metal particles are disposed on the inner surface corresponding to the opening of the corresponding pressing boss.

[0047] As can be seen from the above description, this structural design, on the one hand, enhances the elasticity of the force-feeling rebound bump, providing users with more comfortable and clear feedback on the pressing force value; on the other hand, the hollow pressing boss can reduce the overall weight of the switch, while providing suitable space for the installation of the dome and conductive metal particles, facilitating assembly and maintenance; the dome and conductive metal particles are respectively set at the opening of the pressing boss and on the corresponding inner surface, ensuring accurate contact between the two and the PCBA board and good signal transmission.

[0048] Furthermore, the PCBA board is provided with dome gold fingers and metal particle gold fingers that are compatible with the dome and conductive metal particles.

[0049] As can be seen from the above description, the PCBA board is equipped with gold fingers for the dome switch and the conductive metal particles that are compatible with the dome switch and the conductive metal particles. The gold fingers have good conductivity and oxidation resistance, which can ensure a stable electrical connection between the dome switch and the conductive metal particles and the PCBA board, reduce contact resistance, improve the efficiency and stability of signal transmission, and extend the service life of the switch.

[0050] Please refer to Figures 1 to 5 As shown, Embodiment 1 of this utility model is as follows:

[0051] Please refer to Figure 1 and Figure 5 An automotive push-button switch includes a button cap 1, a slider 2, a waterproof rubber plate 3, and a PCBA board 4. The slider 2 is located between the button cap 1 and the waterproof rubber plate 3. The PCBA board 4 is located on the side of the waterproof rubber plate 3 away from the slider 2. The button cap 1 and the slider 2 are fixedly connected so that when the button cap 1 is pressed, the force applied by the button cap 1 is transmitted to the slider 2 and acts on the waterproof rubber plate 3.

[0052] In this embodiment, the button cap 1 of the car push switch is made of polycarbonate (PC) material, with the surface sprayed with paint and laser-engraved characters or anti-slip texture, making it convenient for the driver to operate; the slider 2 is made of polyoxymethylene (POM) material, which is fixedly connected to the button cap 1 by a snap-fit ​​structure. The snap-fit ​​structure includes a slot at the bottom of the button cap 1 and a hook at the top of the slider 2. The hook and the slot are interference-fitted to ensure a firm connection.

[0053] Please refer to Figures 1 to 5 The waterproof rubber plate 3 has two force-sensitive rebound bumps 31 on the side near the slider 2, and a dome switch 32 and a conductive metal particle 33 on the side away from the slider 2. The dome switch 32 and the conductive metal particle 33 are respectively arranged in a one-to-one correspondence with the positions of the two force-sensitive rebound bumps 31, so that when the button cap 1 is pressed, the PCBA board 4 makes contact with either the dome switch 32 or the conductive metal particle 33, thereby achieving signal conduction.

[0054] The dome switch 32 is a square metal spring with a length and width of 5mm and a thickness of 0.2mm. It is fixed to the surface of the waterproof rubber sheet 3 corresponding to one of the force-sensitive rebound protrusions 31 by adhesive. The conductive metal particle 33 is a nickel-plated metal particle with a diameter of 3mm. It is also fixed to the surface of the waterproof rubber sheet 3 corresponding to another force-sensitive rebound protrusion 31 by silicone.

[0055] Please refer to Figure 2 The waterproof rubber plate 3 is also provided with a first exhaust groove 34 on the side away from the slider 2. One end of the first exhaust groove 34 is connected to the force value tactile rebound protrusion 31 of the dome switch 32 and one end of the first exhaust groove 34 is close to the connection between the dome switch 32 and the force value tactile rebound protrusion 31.

[0056] Please refer to Figure 2 The horizontal cross-sectional shape of the first exhaust groove 34 is L-shaped, and the other end of the first exhaust groove 34 extends to the edge of the waterproof rubber plate 3.

[0057] Please refer to Figure 2 The waterproof rubber plate 3 is provided with a first groove 35 on the side away from the slider 2. The first groove 35 is connected to the other end of the first exhaust groove 34. The groove depth of the first groove 35 is greater than the groove depth of the first exhaust groove 34 (that is, the groove depth of the first groove 35 is 2.5mm and the groove depth of the first exhaust groove 34 is 0.2mm).

[0058] Please refer to Figure 2 The waterproof rubber plate 3 is also provided with a second venting groove 36 on the side away from the slider 2. One end of the second venting groove 36 is connected to the force-feeling rebound protrusion 31 provided with conductive metal particles 33.

[0059] Please refer to Figure 2 The horizontal cross-sectional shape of the second exhaust groove 36 is L-shaped, and the other end of the second exhaust groove 36 extends to the edge of the waterproof rubber plate 3.

[0060] Please refer to Figure 2 The waterproof rubber plate 3 is provided with a second groove 37 on the side away from the slider 2. The second groove 37 is connected to the other end of the second exhaust groove 36. The groove depth of the second groove 37 is greater than the groove depth of the second exhaust groove 36 (that is, the groove depth of the second groove 37 is 2.5mm and the groove depth of the second exhaust groove 36 is 0.2mm).

[0061] Please refer to Figure 2 , Figure 3 and Figure 5 The waterproof rubber sheet 3 is a hollow rubber shell with an opening at one end. The PCBA board 4 covers the opening of the rubber shell and seals the opening.

[0062] Please refer to Figure 3 The force-feel rebound bump 31 is a pressing boss formed by the outward protrusion of the inner surface corresponding to the opening of the rubber shell. The pressing boss is hollow inside and has an opening at one end near the PCBA board 4.

[0063] Please refer to Figure 2 The dome switch 32 is disposed at the opening of the corresponding pressing boss, and the conductive metal particle 33 is disposed on the inner surface corresponding to the opening of the corresponding pressing boss.

[0064] Please refer to Figure 4 The PCBA board 4 is provided with dome gold fingers 41 and metal particle gold fingers 42 that are compatible with dome 32 and conductive metal particles 33.

[0065] In practical applications, the structure and parameters of automotive push-button switches can be adjusted according to different automotive functional requirements and usage scenarios. For example, for switches requiring frequent operation, the hardness and elasticity of the force-feel rebound bump 31 can be appropriately increased to improve the durability of the pressing feel. For areas with limited installation space, the shapes of the waterproof rubber plate 3 and slider 2 can be optimized to make them more compact. Additionally, indicator lights can be added to the surface of the button cap 1, and the switch status can be visualized through circuit control on the PCBA board 4, enhancing the user experience. Furthermore, the material of the waterproof rubber plate 3 can be improved by using a new type of nanocomposite material to further enhance its waterproof, dustproof, and wear-resistant properties, adapting to harsher automotive operating environments.

[0066] In summary, the automotive push-button switch provided by this utility model features two force-sensitive rebound protrusions on the side of a waterproof rubber sheet near the slider, and a dome switch and conductive metal particles on the side of the waterproof rubber sheet away from the slider. The dome switch and conductive metal particles are respectively positioned one-to-one with the two force-sensitive rebound protrusions, so that when the button cap is pressed, the PCBA board comes into contact with either the dome switch or the conductive metal particles, achieving signal conduction. This structural design ensures signal conduction as long as either the dome switch or the conductive metal particles contact the PCBA board, thus solving the risk of poor contact and conduction due to dust adhering to the dome switch. Furthermore, the combination of the dome switch and conductive metal particles avoids the problem of dual tactile feedback.

[0067] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A push-button switch for automobiles, characterized in that, The device includes a button cap, a slider, a waterproof rubber sheet, and a PCBA board. The slider is located between the button cap and the waterproof rubber sheet, and the PCBA board is located on the side of the waterproof rubber sheet away from the slider. The button cap and the slider are fixedly connected so that when the button cap is pressed, the force applied by the button cap is transmitted to the slider and acts on the waterproof rubber sheet. The waterproof rubber sheet has two force-sensitive rebound bumps on the side near the slider, and a dome switch and a conductive metal particle on the side away from the slider. The dome switch and the conductive metal particle are respectively set to correspond one-to-one with the positions of the two force-sensitive rebound bumps, so that when the button cap is pressed, the PCBA board makes contact with either the dome switch or the conductive metal particle to achieve signal conduction.

2. The automotive push-button switch according to claim 1, characterized in that, The waterproof rubber sheet is also provided with a first vent groove on the side away from the slider. One end of the first vent groove is connected to the force value tactile rebound protrusion with the dome switch, and one end of the first vent groove is close to the connection between the dome switch and the force value tactile rebound protrusion.

3. The automotive push-button switch according to claim 2, characterized in that, The horizontal cross-sectional shape of the first exhaust channel is L-shaped, and the other end of the first exhaust channel extends to the edge of the waterproof rubber sheet.

4. The automotive push-button switch according to claim 2, characterized in that, The waterproof rubber sheet is provided with a first groove on the side away from the slider. The first groove is connected to the other end of the first venting groove, and the groove depth of the first groove is greater than the groove depth of the first venting groove.

5. The automotive push-button switch according to claim 1, characterized in that, The waterproof rubber sheet is also provided with a second venting groove on the side away from the slider, and one end of the second venting groove is connected to a force-sensitive rebound protrusion with conductive metal particles.

6. The automotive push-button switch according to claim 5, characterized in that, The horizontal cross-sectional shape of the second exhaust channel is L-shaped, and the other end of the second exhaust channel extends to the edge of the waterproof rubber sheet.

7. The automotive push-button switch according to claim 5, characterized in that, The waterproof rubber sheet is provided with a second groove on the side away from the slider. The second groove is connected to the other end of the second venting groove, and the groove depth of the second groove is greater than the groove depth of the second venting groove.

8. The automotive push-button switch according to claim 1, characterized in that, The waterproof rubber sheet is a hollow rubber shell with an opening at one end. The PCBA board is placed over the opening of the rubber shell and seals the opening.

9. The automotive push-button switch according to claim 8, characterized in that, The force-feel rebound bump is a pressing boss formed by the outward protrusion of the inner surface corresponding to the opening of the rubber shell. The pressing boss is hollow inside and has an opening at one end near the PCBA board. The dome switch is disposed at the opening of the corresponding pressing boss, and the conductive metal particles are disposed on the inner surface corresponding to the opening of the corresponding pressing boss.

10. The automotive push-button switch according to claim 1, characterized in that, The PCBA board is provided with dome gold fingers and metal particle gold fingers that are compatible with dome switches and conductive metal particles.

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