A key switch, a key device, and a vehicle
Patent Information
- Application Number
- CN202522333333.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-03
- Publication Date
- 2026-10-13
- Estimated Expiration
- 2035-11-03
AI Technical Summary
[0003]但是，由于按键弹片上的凸点较小且材料坚硬，PCB板上的凸点表面材料为金而较软，所以在多次按压后PCB板上的凸点处容易产生磨损，导致按键弹片上的凸点和PCB板上的凸点之间的接触电阻不稳定，会出现按键弹片被按下后，但是与PCB板上的凸点连接的开关控制器识别不到的情况，进而导致按键开关功能失效
[0025]本申请提供了一种按键开关、按键装置及车辆，按键基板的第一区域处设置有第一中心接触面，环形接触面环绕第一中心接触面设置，按键弹片的第二区域处设置有第二中心接触面，按键弹片的各个接触边中存在至少一个与第二中心接触面之间电连接的导电接触边，当按键弹片被朝向按键基板的方向按下时产生形变，导电接触边同步下移至与环形接触面接触，第二中心接触面下压至与第一中心接触面接触，第一中心接触面和环形接触面之间通过第二中心接触面和导电接触边之间的电连接导通。将传统的凸点连接更改为接触面连接，扩大按键弹片被按下时与按键基板之间的接触面积，减小按键基板所承受的压力，延长了按键开关的寿命。
Smart Images
Figure CN224851692U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of switch control, and in particular to a push-button switch, a push-button device, and a vehicle. Background Technology
[0002] Existing push button switches typically have two protrusions on the push button spring, with a pre-set metal trace between the two protrusions. The PCB board (Printed Circuit Board) also has two protrusions to be closed. When the push button spring is pressed, the two protrusions on the push button spring make contact with the two protrusions on the PCB board, thereby connecting the two protrusions on the PCB board.
[0003] However, because the bumps on the button spring are small and made of hard material, while the bumps on the PCB board are made of gold and are relatively soft, the bumps on the PCB board are prone to wear after repeated pressing. This causes unstable contact resistance between the bumps on the button spring and the bumps on the PCB board, resulting in situations where the button spring is pressed but the switch controller connected to the bumps on the PCB board cannot recognize it, thus causing the button switch to malfunction. Utility Model Content
[0004] The purpose of this invention is to provide a push button switch, a push button device, and a vehicle, which changes the traditional protrusion connection to a contact surface connection, increases the contact area between the push button spring and the push button base plate when the push button is pressed, reduces the pressure on the push button base plate, and extends the life of the push button switch.
[0005] To solve the above-mentioned technical problems, this utility model provides a push button switch, including a push button spring and a push button base plate, wherein the push button spring is in a preset direction on the push button base plate;
[0006] The button substrate includes a first central contact surface disposed in a first region of the button substrate, and an annular contact surface disposed around the first central contact surface and isolated from the first central contact surface by an insulating region.
[0007] The button spring includes a plurality of contact edges and a second central contact surface located in the second region of the button spring; at least one of the contact edges is a conductive contact edge and is electrically connected to the second central contact surface.
[0008] When the button spring is pressed in the direction of the button substrate, the button spring deforms so that the conductive contact edge contacts the annular contact surface, and then the second center contact surface contacts the first center contact surface, so as to make the first center contact surface and the annular contact surface conductive.
[0009] Preferably, the button spring further includes a plurality of recessed structures recessed into the interior of the button spring, and each of the recessed structures and each of the contact edges are alternately connected to cause the button substrate to deform when the button spring is pressed in the direction toward the button substrate.
[0010] Preferably, the first central contact surface and the second central contact surface are both circular in shape, and the annular contact surface is annular in shape.
[0011] Preferably, the button spring is made of conductive metal, and the button spring is configured to make the conductive contact edge and the second center contact surface conductive.
[0012] Preferably, it further includes:
[0013] A silicone pad disposed in a preset direction of the button spring, located in the second region of the button spring and connected to the button spring, and a button shell covering the silicone pad in a preset direction connected to the silicone pad and enclosing the button spring;
[0014] The button housing is used to encapsulate the button spring and the button substrate, and when pressed in the direction of the button substrate, it squeezes the silicone pad so that the silicone pad squeezes the button spring, so that the button spring is pressed down until the conductive contact edge contacts the annular contact surface and the second center contact surface contacts the first center contact surface.
[0015] Preferably, each contact edge of the button substrate is a conductive contact edge.
[0016] To solve the above-mentioned technical problems, this utility model provides a button device, including the button switch as described above.
[0017] Preferably, it also includes a key detection circuit;
[0018] The key detection circuit includes a key connection line, a first voltage divider resistor, and a controller.
[0019] The first end of the button connection line is connected to the annular contact surface on the button substrate, and the second end of the button connection line is grounded.
[0020] The first end of the first voltage divider resistor is connected to the power supply voltage, the second end of the first voltage divider resistor is connected to the first center contact surface of the button substrate, and the second end of the first voltage divider resistor is also connected to the input terminal of the controller.
[0021] When the second center contact surface of the button spring contacts the first center contact surface of the button substrate, and the conductive contact edge of the button spring contacts the annular contact surface, the level of the input terminal of the controller changes.
[0022] Preferably, the key detection circuit further includes a second voltage divider resistor and a third voltage divider resistor, wherein the first end of the second voltage divider resistor is connected to the second end of the first voltage divider resistor, and the second end of the second voltage divider resistor is grounded;
[0023] The first end of the third voltage divider resistor is connected to the second end of the first voltage divider resistor, and the second end of the third voltage divider resistor is connected to the first center contact surface of the button substrate.
[0024] To solve the above-mentioned technical problems, this utility model provides a vehicle including the button device as described above.
[0025] This application provides a push-button switch, a push-button device, and a vehicle. A first central contact surface is provided in a first region of the push-button substrate, and an annular contact surface surrounds the first central contact surface. A second central contact surface is provided in a second region of the push-button spring. At least one conductive contact edge of each contact edge of the push-button spring is electrically connected to the second central contact surface. When the push-button spring is pressed towards the push-button substrate, it deforms, and the conductive contact edge simultaneously moves downward to contact the annular contact surface. The second central contact surface is pressed down to contact the first central contact surface. The first central contact surface and the annular contact surface are electrically connected through the second central contact surface and the conductive contact edge. This replaces the traditional bump connection with a contact surface connection, increasing the contact area between the push-button spring and the push-button substrate when pressed, reducing the pressure on the push-button substrate, and extending the lifespan of the push-button switch. Attached Figure Description
[0026] To more clearly illustrate the embodiments of this utility model, the drawings used in 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.
[0027] Figure 1 A schematic diagram of the structure of a push-button switch provided in this application;
[0028] Figure 2 A schematic diagram illustrating the relationship between the contact resistance and the number of presses of a push-button switch provided in this application;
[0029] Figure 3 A schematic diagram of a key detection circuit provided in this application;
[0030] Figure 4 This application provides a schematic diagram illustrating the relationship between the contact resistance and the number of presses of a button switch after its update. Detailed Implementation
[0031] The core of this utility model is to provide a push button switch, a push button device, and a vehicle, which changes the traditional protrusion connection to a contact surface connection, increases the contact area between the push button spring and the push button base plate when the push button is pressed, reduces the pressure on the push button base plate, and extends the life of the push button switch.
[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model 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, 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.
[0033] Please refer to Figure 1 , Figure 1 A schematic diagram of a push button switch provided in this application includes a push button spring 2 and a push button base plate 1, wherein the push button spring 2 is in a preset direction on the push button base plate 1;
[0034] The button substrate 1 includes a first central contact surface 11 disposed in a first region of the button substrate 1, and an annular contact surface 12 disposed around the first central contact surface 11 and isolated from the first central contact surface 11 by an insulating region 13.
[0035] The button spring 2 includes a plurality of contact edges 22 and a second central contact surface 21 located in the second region of the button spring 2; at least one of the contact edges 22 is a conductive contact edge and is electrically connected to the second central contact surface 21.
[0036] When the button spring 2 is pressed in the direction toward the button substrate 1, the button spring 2 deforms so that the conductive contact edge contacts the annular contact surface 12, and then the second center contact surface 21 contacts the first center contact surface 11, so as to make the first center contact surface 11 and the annular contact surface 12 conductive.
[0037] In traditional push-button switches, the contact area between the push-button spring 2 and the push-button base plate 1 is a raised dot. However, since the raised dot on the push-button base plate 1 is made of gold, and gold is relatively soft, the gold on the push-button spring 2 will wear and deform after frequent pressing on the push-button base plate 1. This causes a change in the contact resistance between the push-button spring 2 and the raised dot on the push-button base plate 1, such as... Figure 2 As shown, Figure 2This diagram illustrates the relationship between the contact resistance and the number of presses of a push-button switch provided in this application. The horizontal axis represents the number of presses of the push-button switch, and the vertical axis represents the contact resistance between the push-button base plate 1 and the push-button spring 2. It can be seen that when the number of presses is low, the contact resistance between the push-button base plate 1 and the push-button spring 2 is low, and the push-button switch can be accurately turned on by pressing. However, as the number of presses increases, the contact resistance between the push-button base plate 1 and the push-button spring 2 increases. At this time, even if the push-button spring 2 and the push-button base plate 1 are in contact, the push-button switch cannot be turned on, that is, the push-button switch fails.
[0038] Based on this, in this application, a first central contact surface 11 is provided on the key substrate 1, and a second central contact surface 21 is provided on the key spring 2. The first central contact surface 11 in the first area on the key substrate 1 and the second central contact surface 21 in the second area on the key spring 2 are opposite to each other, so as to ensure that when the key spring 2 is pressed, the second central contact surface 21 can contact the first central contact surface 11. In addition, an annular contact surface 12 surrounding the first central contact surface 11 is also provided on the key substrate 1, and several contact edges 22 are also provided on the edge of the key substrate 1, and at least one contact edge 22 is a conductive contact edge. The conductive contact edge is electrically connected to the second central contact surface 21. When the key spring 2 is pressed, the conductive contact edge of the key spring 2 contacts the annular contact surface 12 on the key substrate 1, thereby realizing the conduction of the circuit between the annular contact surface 12, the conductive contact edge, the second central contact surface 21, and the first central contact surface 11, thereby realizing the closing of the key switch.
[0039] Based on this, since the first central contact surface 11, the second central contact surface 21, and the annular contact surface 12 are all surfaces rather than protrusions, and the conductive contact edge is also one or more edges rather than protrusions, when the button spring 2 is pressed, the contact area between the first central contact surface 11 and the second central contact surface 21 becomes larger relative to the protrusions. Therefore, the pressure of the second central contact surface 21 on the first central contact surface 11 decreases, and the contact area between the conductive contact edge and the annular contact surface 12 also increases, and the pressure of the conductive contact edge on the annular contact surface 12 also decreases. This reduces the wear of the first central contact surface 11 and the annular contact surface 12, thereby improving the service life of the button switch.
[0040] It should be noted that the button spring 2 will deform when it is pressed. The deformation process is that the contact edge 22 of the button spring 2 is pressed down first and contacts the annular contact surface 12. Then the second center contact surface 21 of the button spring 2 will deform to contact the first center contact surface 11. Alternatively, the contact edge 22 may be pressed down first and contacts the annular contact surface 12 while the second center contact surface 21 deforms to contact the first center contact surface 11. The specific details depend on the specific structure of the button spring 2.
[0041] Among the contact edges 22 of the button spring 2, at least one contact edge 22 is a conductive contact edge, so that when the button spring 2 is pressed, the conductive contact edge can be in contact with the annular contact surface 12.
[0042] Furthermore, the button spring 2 can be made of conductive metal, thereby ensuring that when any contact edge 22 is a conductive contact edge, the conductive contact edge can maintain electrical connection with the second central contact surface 21, that is, maintain a conductive state. The button spring 2 is also made of a material that can deform when pressed and return to its original shape when not pressed.
[0043] After the button spring 2 is pressed and deformed, the area of the plane surrounded by each contact edge is consistent with the area surrounded by the annular contact surface 12, so as to ensure that the conductive contact edge can contact the annular contact surface 12 after the button spring 2 is pressed.
[0044] The material on the insulating region 13 can be green oil to isolate the first central contact surface 11 and the annular contact surface 12.
[0045] In summary, this application changes the traditional bump connection to a contact surface connection, increases the contact area between the button spring 2 and the button base plate 1 when the button is pressed, reduces the pressure on the button base plate 1, and extends the life of the button switch.
[0046] Based on the above embodiments:
[0047] In a preferred embodiment, the button spring 2 further includes a plurality of recessed structures recessed into the interior of the button spring 2, and each recessed structure and each contact edge 22 are alternately connected to cause the button substrate 1 to deform when the button spring 2 is pressed in the direction toward the button substrate 1.
[0048] In this embodiment, in order to enable the button spring 2 to deform when pressed, a recessed structure is provided between each contact edge 22 in this application. When the button spring 2 is not pressed, the recessed structure can be in a state of convergence towards the center of the recessed structure, so that the first center contact surface 11 of the button spring 2 is arched relative to the contact edge 22, so as to avoid contact with the button substrate 1. When the button spring 2 is pressed, the recessed structure opens to ensure that the button spring 2 changes from the arched state to the flat state, so as to ensure that the second center contact surface 21 contacts the first center contact surface 11, and the conductive contact edge contacts the annular contact surface 12.
[0049] The recessed structure can be an arc-shaped edge, specifically an arc-shaped edge recessed towards the second center contact surface 21 of the button spring 2, to provide the button substrate 1 with a margin for deformation.
[0050] In a preferred embodiment, the first central contact surface 11 and the second central contact surface 21 are both circular in shape, and the annular contact surface 12 is annular in shape.
[0051] In this embodiment, the first central contact surface 11 and the second central contact surface 21 can both be circular. As long as the first central contact surface 11 and the second central contact surface 21 are in contact, and the first central contact surface 11 and the second central contact surface 21 are in contact with the maximum area, the conduction between the first central contact surface 11 and the second central contact surface 21 can be ensured.
[0052] The annular contact surface 12 is circular in shape to ensure that when any contact edge 22 is a conductive contact edge, it makes contact with the annular contact surface 12 and conducts electricity. Based on this, when the button spring 2 is pressed, the curvature of the contact edge 22 is consistent with the curvature of the annular contact surface 12 to ensure that the conductive contact edge contacts the annular contact surface 12 with the maximum area, thus ensuring the effectiveness of the button switch.
[0053] As a preferred embodiment, it also includes:
[0054] A silicone pad is set in a preset direction of the button spring 2, located in the second area of the button spring 2 and connected to the button spring, and a button shell is set in a preset direction of the silicone pad, connected to the silicone pad and covering the button spring 2.
[0055] The button housing is used to encapsulate the button spring 2 and the button substrate 1, and when pressed in the direction toward the button substrate, it squeezes the silicone pad so that the silicone pad squeezes the button spring 2, so that the button spring 2 is pressed down until the conductive contact edge contacts the annular contact surface 12 and the second center contact surface 21 contacts the first center contact surface 11.
[0056] In this embodiment, a silicone pad is provided in a preset direction on the button spring 2. The silicone pad can buffer the mechanical collision triggered by the switch button to reduce the noise when the button spring 2 is pressed, and can provide a soft pressing feedback, avoiding the stiffness of the hard material of the button spring 2 and improving the comfort of using the button spring 2.
[0057] In addition, a button shell is provided in the preset direction of the silicone pad to wrap the button spring 2 and to encapsulate the button spring and the button base plate, so as to isolate the button switch from dust or other microparticle contamination and improve the life of the button switch.
[0058] Furthermore, since the silicone pad is connected to the button spring, and the button shell is connected to the silicone pad, the button shell encapsulates the button spring and the button base plate. This ensures that when the button spring is not pressed, the button shell, carrying the silicone pad and the button spring, is in an arched state. In other words, there is a gap between the second center contact surface of the button spring and the first center contact surface of the button base plate, which prevents accidental contact between the button spring and the button base plate from causing the button switch to open accidentally.
[0059] It should be noted that the preset direction of the button spring 2 is opposite to that of the button base plate 1. That is, taking the bottom to top direction as an example, the button base plate 1 is at the bottom, the button spring 2 is above the button base plate 1, the silicone pad is above the button spring 2, and the button shell is above the silicone pad.
[0060] In a preferred embodiment, each contact edge 22 of the button substrate 1 is a conductive contact edge.
[0061] In this embodiment, each contact edge 22 of the button substrate 1 is a conductive contact edge. When the button substrate 1 is pressed, each conductive contact edge can contact the annular contact surface 12, further ensuring that the circuit between the conductive contact edge and the annular contact surface 12 can be conducted. That is, by providing redundancy of conductive contact edges, even if a certain conductive contact edge is worn between itself and the annular contact surface 12, the other conductive contact edges can still make normal contact and conduction with the annular contact surface 12.
[0062] The button device in this application includes the push-button switch as described above.
[0063] For a description of the button device provided in this application, please refer to the above embodiments; this application will not repeat it here.
[0064] In a preferred embodiment, a key detection circuit is also included;
[0065] The button detection circuit includes a button connection wire, a first voltage divider resistor R1, and a controller 3;
[0066] The first end of the button connection wire is connected to the annular contact surface 12 on the button substrate 1, and the second end of the button connection wire is grounded.
[0067] The first end of the first voltage divider resistor R1 is connected to the power supply voltage VCC, the second end of the first voltage divider resistor R1 is connected to the first center contact surface 11 of the keypad substrate 1, and the second end of the first voltage divider resistor R1 is also connected to the input terminal of the controller 3.
[0068] When the second center contact surface 21 of the button spring 2 contacts the first center contact surface 11 of the button substrate 1, and the conductive contact edge of the button spring 2 contacts the annular contact surface 12, the level of the input terminal of the controller 3 changes.
[0069] The button detection circuit in the push-button switch includes a button connection wire, a first voltage divider resistor R1, and a controller 3. The button connection wire shorts the first center contact surface 11 on the button substrate 1 to the ground terminal. The first voltage divider resistor R1 is connected between the annular contact surface 12 and the power supply voltage. When the button spring 2 is not pressed, the second center contact surface 21 is not in contact with the first center contact surface 11, and the conductive contact edge is not in contact with the annular contact surface 12. Therefore, the voltage between the first center contact surface 11 and the annular contact surface 12 is not conductive, and the power supply voltage is only transmitted to the input terminal of the controller 3 through the first voltage divider resistor R1. At this time, the voltage at the input terminal of the controller 3 can be the voltage division of the controller 3's internal circuit after the controller 3's internal circuit is connected in series with the first voltage divider resistor R1. This voltage at the input terminal of the controller 3 can be marked as the first voltage. When the button spring 2 is pressed, the second center contact surface 21 contacts the first center contact surface 11, and the conductive contact edge contacts the second center contact surface 12. 21 makes contact, thereby connecting the first center contact surface 11 and the annular contact surface 12 through the first center contact surface 11 and the conductive contact edge. At this time, the power supply voltage, the first voltage divider resistor R1, the annular contact surface 12, the conductive contact edge, the second center contact surface 21, the first center contact surface 11, and the ground terminal are connected in series. The voltage at the input terminal of the controller 3 becomes the voltage division of the circuit resistance between the first center contact surface 11 and the annular contact surface 12 after the first voltage divider resistor R1 is connected in series. The voltage at the input terminal of the controller 3 at this time can be marked as the second voltage. Since the resistance of the internal circuit of the controller 3 is not the same as the circuit resistance between the first center contact surface 11 and the annular contact surface 12, the first voltage and the second voltage are different. The controller 3 can determine whether the button spring 2 is pressed and whether the first center contact surface 11 and the annular contact surface 12 are connected based on the change of the input terminal voltage.
[0070] It should be noted that after the controller 3 detects a change in the voltage at the input terminal, it can output a button switch closing signal to other devices so that the controller 3 or other devices can perform corresponding processing based on the closed button switch.
[0071] In a preferred embodiment, the key detection circuit further includes a second voltage divider resistor R2 and a third voltage divider resistor R3, wherein the first end of the second voltage divider resistor R2 is connected to the second end of the first voltage divider resistor R1, and the second end of the second voltage divider resistor R2 is grounded.
[0072] The first end of the third voltage divider resistor R3 is connected to the second end of the first voltage divider resistor R1, and the second end of the third voltage divider resistor R3 is connected to the first center contact surface 11 of the keypad substrate 1.
[0073] In this embodiment, a second voltage divider resistor R2 and a third voltage divider resistor R3 are also provided. When the button spring 2 is not pressed, the voltage at the input terminal of the controller 3 is the voltage divided on the second voltage divider resistor R2 after the first voltage divider resistor R1 and the second voltage divider resistor R2 are connected in series between the power supply voltage and the ground terminal. When the button spring 2 is pressed, the voltage at the input terminal of the controller 3 is the voltage divided on the parallel circuit after the circuit resistance between the first center contact surface 11 and the annular contact surface 12 and the third voltage divider resistor R3 are connected in series with the second voltage divider resistor R2, and the parallel circuit is then connected in series with the first voltage divider resistor R1 between the power supply voltage and the ground terminal.
[0074] Based on this, the resistance values of the first voltage divider resistor R1, the second voltage divider resistor R2, and the third voltage divider resistor R3 can be adjusted to ensure that the voltage at the input terminal of the controller 3 varies depending on whether the push button switch is pressed or not.
[0075] Specifically, controller 3 monitors whether the button spring 2 is pressed by monitoring changes in the input voltage. For example... Figure 3 As shown, Figure 3 This is a schematic diagram of a key detection circuit provided in this application. Taking four contact edges 22 as conductive contact edges as an example, node 1 is connected to the first central contact surface 11, and nodes 2, 3, 4, and 5 are all connected to the annular contact surface 12. Nodes 2, 3, 4, and 5 respectively correspond to the portions of the annular contact surface 12 that are connected to the conductive contact edges. When any conductive contact edge contacts the annular contact surface, the corresponding node among nodes 2, 3, 4, and 5 is connected and conducts through node 1.
[0076] When button spring 2 is not pressed: S1 is not closed, node 1 is not connected to ground, and the voltage at the input terminal of controller 3 is the voltage division value of the second voltage divider resistor R2 among the first voltage divider resistor R1 and the second voltage divider resistor R2.
[0077] When button spring 2 is pressed: S1 is closed, node 1 is connected to ground, and the voltage at the input terminal of controller 3 is the resistance value of the circuit resistor Rs1 between the first center contact surface 11 and the annular contact surface 12 and the third voltage divider resistor R3 connected in series and then in parallel with the second voltage divider resistor R2, and the voltage divided by the first voltage divider resistor R1.
[0078] The voltage range is calculated as follows:
[0079] If the power supply voltage VCC is 5V, the first voltage divider resistor R1, the second voltage divider resistor R2, and the third voltage divider resistor R3 use 1% accuracy. In order to ensure the threshold value to the greatest extent, the resistance accuracy is 3% for calculation.
[0080] For example, the first voltage divider resistor R1 is 3.3KΩ—the resistance threshold range of the first voltage divider resistor R1 is 3201Ω—3390Ω;
[0081] The second voltage divider resistor R2 is set to 10KΩ—the resistance threshold range of the second voltage divider resistor R2 is 9700Ω—10300Ω;
[0082] The third voltage divider resistor R3 is 1.5KΩ — the resistance threshold range of the third voltage divider resistor R3 is 1455Ω — 1545Ω;
[0083] The resistance threshold of the circuit resistance Rs1 between the first central contact surface 11 and the annular contact surface 12 is estimated to be between 0 and 100Ω.
[0084] When the button spring is pressed, the voltage at the input terminal of controller 3, that is, the voltage at point a, is:
[0085] ;
[0086] Where || represents parallel connection, then we have:
[0087] ;
[0088] When the button spring is not pressed, the voltage at the input terminal of controller 3, that is, the voltage at point a, is:
[0089] ;
[0090] When button spring 2 is not pressed, the voltage detection threshold at the input terminal of controller 3 is as follows:
[0091] ;
[0092] ;
[0093] When the voltage at point a is detected to be between 2.629V and 3.891V, it can be determined that button spring 2 is not pressed.
[0094] When button spring 2 is pressed, the voltage detection threshold at the input terminal of controller 3 is as follows:
[0095] ;
[0096] ;
[0097] When the voltage at point a is detected to be between 1.329V and 1.566V, it can be determined that button spring 2 is pressed.
[0098] When button spring 2 is pressed, the input terminal of controller 3 switches from the voltage detection threshold when it is not pressed to the voltage detection threshold when it is pressed, and sends a signal to body controller 3 to complete one press of button spring 2, that is, to complete one closing of button switch.
[0099] Please refer to Figure 4 , Figure 4 This application provides a schematic diagram illustrating the relationship between the contact resistance and the number of presses of a button switch after its upgrade. It can be seen that the contact resistance of the button switch remains stable with increasing presses, ensuring accurate closure and improving its lifespan. Specifically, after the button spring 2 is pressed 45,000 times, the contact resistance remains unchanged at 30Ω. Compared to the original solution, the button switch in this application has improved lifespan and accuracy, and will not experience poor contact or switch failure due to wear during its service life.
[0100] The vehicle described in this application includes the button device as described above.
[0101] For a description of the vehicle provided in the application, please refer to the above embodiments; this application will not repeat it here.
[0102] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0103] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A push-button switch, characterized in that, It includes a button spring and a button base plate, wherein the button spring is in a predetermined direction on the button base plate; The button substrate includes a first central contact surface disposed in a first region of the button substrate, and an annular contact surface disposed around the first central contact surface and isolated from the first central contact surface by an insulating region. The button spring includes a plurality of contact edges and a second central contact surface located in the second region of the button spring; at least one of the contact edges is a conductive contact edge and is electrically connected to the second central contact surface. When the button spring is pressed in the direction of the button substrate, the button spring deforms so that the conductive contact edge contacts the annular contact surface, and then the second center contact surface contacts the first center contact surface, so as to make the first center contact surface and the annular contact surface conductive.
2. The push-button switch as described in claim 1, characterized in that, The button spring also includes a plurality of recessed structures that are recessed into the interior of the button spring, and each of the recessed structures and each of the contact edges are alternately connected to cause the button substrate to deform when the button spring is pressed in the direction toward the button substrate.
3. The push-button switch as described in claim 1, characterized in that, Both the first and second central contact surfaces are circular in shape, and the annular contact surface is annular in shape.
4. The push-button switch as described in claim 1, characterized in that, The button spring is made of conductive metal and is configured to make the conductive contact edge and the second center contact surface conductive.
5. The push-button switch as described in claim 1, characterized in that, Also includes: A silicone pad disposed in a preset direction of the button spring, located in the second region of the button spring and connected to the button spring, and a button shell covering the silicone pad in a preset direction connected to the silicone pad and enclosing the button spring; The button housing is used to encapsulate the button spring and the button substrate, and when pressed in the direction of the button substrate, it squeezes the silicone pad so that the silicone pad squeezes the button spring, so that the button spring is pressed down until the conductive contact edge contacts the annular contact surface and the second center contact surface contacts the first center contact surface.
6. The push-button switch as described in any one of claims 1-5, characterized in that, All contact edges of the button substrate are conductive contact edges.
7. A button device, characterized in that, Including the push-button switch as described in any one of claims 1-6.
8. The button device as described in claim 7, characterized in that, It also includes a key detection circuit; The key detection circuit includes a key connection line, a first voltage divider resistor, and a controller. The first end of the button connection line is connected to the annular contact surface on the button substrate, and the second end of the button connection line is grounded. The first end of the first voltage divider resistor is connected to the power supply voltage, the second end of the first voltage divider resistor is connected to the first center contact surface of the button substrate, and the second end of the first voltage divider resistor is also connected to the input terminal of the controller. When the second center contact surface of the button spring contacts the first center contact surface of the button substrate, and the conductive contact edge of the button spring contacts the annular contact surface, the level of the input terminal of the controller changes.
9. The button device as described in claim 8, characterized in that, The key detection circuit further includes a second voltage divider resistor and a third voltage divider resistor. The first end of the second voltage divider resistor is connected to the second end of the first voltage divider resistor, and the second end of the second voltage divider resistor is grounded. The first end of the third voltage divider resistor is connected to the second end of the first voltage divider resistor, and the second end of the third voltage divider resistor is connected to the first center contact surface of the button substrate.
10. A vehicle, characterized in that, Includes the button device as described in any one of claims 7-9.