Parking gear key combination switch and vehicle

Abstract

The utility model discloses a parking gear button combination switch and a vehicle. The combination switch comprises a button, a permanent magnet, a first Hall switch, a second Hall switch and a controller. The key, the permanent magnet and the first Hall switch are used for generating a first Hall switch signal, and the key, the permanent magnet and the second Hall switch are used for generating a second Hall switch signal; the controller is configured to generate a key signal according to the first Hall switch signal and the second Hall switch signal. The combined switch provided by the utility model generates two redundant signals, namely the first Hall switch signal and the second Hall switch signal, when the combined switch acts, the two redundant signals are used for further generating the key signal, and the key signal is generated based on the redundant Hall switch signals, so that a pressing signal exceeding the expectation can be prevented from being generated when the key acts, and the key is prevented from being damaged. And thus, the reliability of the key action is improved.

Description

Technical Field

[0001] The utility model relates to electrical technology, and in particular to a parking gear key combination switch and a vehicle. Background Art

[0002] With the improvement of automobile manufacturing technology and customer demand, the application of automation in automobiles has become more and more popular. Among them, the automatic control form of gear shifting has also derived several types, including gear lever type, knob type, paddle type and hand-shift type. Among them, the hand-shift type gear shifting scheme has become more and more widely used with the popularity of new energy vehicles. Automobile manufacturers that adopt the hand-shift scheme often integrate the EPB (Electrical Park Brake) switch into the parking (P) gear button, which controls the vehicle's transmission system and braking system at the same time, making the reliability of the P gear button particularly important.

[0003] In the existing technical solutions, the P gear button usually uses conductive particles or metal springs as the intermediate medium for connecting or disconnecting the key signal circuit. When conductive particles are used, the key signal circuit is connected through the contact between the conductive particles and the (circuit board) contacts, thereby generating a parking signal. When metal springs are used, the key signal circuit is connected through the contact between the center point of the metal spring and the (circuit board) contacts, thereby generating a parking signal.

[0004] Based on the above-mentioned P-position button structure, the P-position button has the problem that when there is foreign matter inside the switch or the number of uses increases to a certain level, the contact resistance changes, causing the contacts to fail to reliably conduct, resulting in switch signal failure. Utility Model Content

[0005] The utility model provides a parking gear key combination switch and a vehicle, so as to achieve the purpose of generating a parking signal in a manner that avoids contact between a contact point and a conductive medium (conductive particles or metal springs), thereby avoiding the problem of switch signal failure caused by the inability of the contact point to reliably conduct due to changes in contact resistance.

[0006] In a first aspect, an embodiment of the utility model provides a parking gear key combination switch, including a key, a permanent magnet, a first Hall switch, a second Hall switch and a controller;

[0007] The button, the permanent magnet and the first Hall switch are used to generate a first Hall switch signal, and the button, the permanent magnet and the second Hall switch are used to generate a second Hall switch signal;

[0008] The controller is configured to generate a key signal according to the first Hall switch signal and the second Hall switch signal.

[0009] Optionally, the permanent magnet is fixedly connected to the button, and when the button is pressed, the permanent magnet approaches the first Hall switch and the second Hall switch, and when the button is reset, the permanent magnet moves away from the first Hall switch and the second Hall switch.

[0010] Optionally, it also includes a housing;

[0011] The housing is provided with a first cavity and an elastic component;

[0012] The button is arranged in the first cavity and is slidably connected to the first cavity. The elastic component is used to provide pressing resistance and rebound force for the button.

[0013] Optionally, the elastic component includes a first hollow elastic component and a second hollow elastic component;

[0014] The first hollow elastic component forms a second cavity, and the second hollow elastic component forms a third cavity;

[0015] The first Hall switch is disposed in the second cavity, and the second Hall switch is disposed in the third cavity.

[0016] Optionally, the first Hall switch is configured to sense changes in the magnetic field of a first magnetic pole of the permanent magnet, and the second Hall switch is configured to sense changes in the magnetic field of a second magnetic pole of the permanent magnet.

[0017] Optionally, the first hollow elastic component and the second hollow elastic component are made of silicone leather cups.

[0018] Optionally, it further includes a control chip, the controller is connected to the control chip, and the control chip is also connected to the first Hall switch and the second Hall switch;

[0019] The control chip is used to supply power to the first Hall switch and the second Hall switch, and to convert the key signal into a communication signal output to the communication unit.

[0020] Optionally, the communication signal is a CAN signal.

[0021] Optionally, the controller adopts a single chip microcomputer.

[0022] In a second aspect, an embodiment of the utility model further provides a vehicle, comprising any one of the parking gear key combination switches described in the embodiments of the utility model.

[0023] Compared with the prior art, the beneficial effect of the utility model is that: the utility model proposes a parking gear key combination switch, which includes a first Hall switch and a second Hall switch, a total of two Hall switches, and uses the Hall switch as a sensor device for measuring the key action, avoiding the generation of the parking signal by the contact point and the conductive medium, which can improve the service life of the combination switch, and can also avoid the problem of abnormal sensor signals caused by the presence of foreign matter in the combination switch, thereby causing abnormal key signals. At the same time, the first Hall switch signal and the second Hall switch signal, which are redundant signals to each other, can be generated by the two Hall switches, and the controller is configured to generate a key signal according to the first Hall switch signal and the second Hall switch signal. Based on the above redundant signals, it can be avoided that when the key is pressed, the generation of a pressing signal beyond expectations can be avoided, thereby improving the reliability of the key action. In addition, the combination switch is configured with a permanent magnet for use with the two Hall switches, which can simplify the structure of the combination switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a structural block diagram of the parking gear key combination switch in the embodiment;

[0025] Figure 2 is a schematic diagram of the parking gear key combination switch structure in the embodiment;

[0026] Figure 3 It is another structural block diagram of the parking gear key combination switch in the embodiment. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0028] Embodiment 1

[0029] Figure 1 is a structural block diagram of the parking gear key combination switch in the embodiment, refer to Figure 1 , the combination switch includes a button 100, a permanent magnet 200, a first Hall switch 301, a second Hall switch 302 and a controller 400;

[0030] The button 100, the permanent magnet 200 and the first Hall switch 301 are used to generate a first Hall switch signal, and the button 100, the permanent magnet 200 and the second Hall switch 302 are used to generate a second Hall switch signal;

[0031] The controller 400 is configured to generate a key signal according to the first Hall switch signal and the second Hall switch signal.

[0032] In this solution, the function of the button 100 can be set according to the requirements. For example, the button 100 can be used as an electronic parking button, and accordingly, the button signal can be an electronic parking control signal.

[0033] In this solution, the first Hall switch signal and the second Hall switch signal are redundant sensing signals, wherein the first Hall switch 301 and the second Hall switch 302 can be the same or different. According to design requirements, the first Hall switch 301 and the second Hall switch 302 can adopt one of a unipolar Hall switch, a bipolar Hall switch, and an omnipolar Hall switch.

[0034] In this solution, both the first Hall switch 301 and the second Hall switch 302 are configured to generate Hall switch signals based on the magnetic field change of the permanent magnet 200 .

[0035] In this solution, there is no limitation on the method of changing the magnetic field strength between any Hall switch and the permanent magnet 200;

[0036] For example, in this solution, the magnetic field strength of the magnetic field sensed by any Hall switch can be changed by changing the distance between the permanent magnet 200 and the first Hall switch 301 and the second Hall switch 302, thereby causing the corresponding Hall switch to generate a Hall switch signal;

[0037] Alternatively, the magnetic field strength of the magnetic field felt by any Hall switch can be changed by changing the position of the magnetic-blocking material between the permanent magnet 200 and the first Hall switch 301 and the second Hall switch 302, thereby causing the corresponding Hall switch to generate a Hall switch signal.

[0038] Exemplarily, in this solution, the permanent magnet 200 can be set to be linked with the button 100, and when the button 100 moves, the permanent magnet 200 moves accordingly, thereby changing the magnetic field strength of the magnetic field felt by the Hall switch by changing the distance between the permanent magnet and the Hall switch;

[0039] According to design requirements, the permanent magnet 200 can be directly fixedly connected to the button 100, or connected to the button 100 through a linkage mechanism (such as a connecting rod, etc.).

[0040] In this solution, the controller 400 is configured to generate a key signal when receiving the first Hall switch signal and the second Hall switch signal simultaneously.

[0041] In this solution, the levels of the first Hall switch signal and the second Hall switch signal can be the same or different. The way in which the controller 400 generates one signal (key signal) based on two redundant signals (the first Hall switch signal and the second Hall switch signal) is the same as the prior art, and the specific content will not be described in detail.

[0042] In this solution, the controller 400 may be a single chip microcomputer (Microcontroller Unit, MCU), an electronic control unit (Electronic Control Unit, ECU), etc.

[0043] This embodiment proposes a parking gear key combination switch, which includes a first Hall switch and a second Hall switch, a total of two Hall switches. The Hall switch is used as a sensor device for measuring the key action, which avoids the generation of a parking signal by contacting a conductive medium with a contact point, can improve the service life of the combination switch, and can also avoid the problem of abnormal sensor signals caused by the presence of foreign matter in the combination switch, thereby causing abnormal key signals. At the same time, the first Hall switch signal and the second Hall switch signal, which are redundant signals to each other, can be generated by the two Hall switches, and the controller is configured to generate a key signal according to the first Hall switch signal and the second Hall switch signal. Based on the above redundant signals, it can be avoided that when the key is pressed, a pressing signal beyond expectations is generated, thereby improving the reliability of the key action. In addition, the combination switch is configured with a permanent magnet for use with the two Hall switches, which can simplify the structure of the combination switch.

[0044] exist Figure 1 On the basis of the shown scheme, in a possible implementation scheme, a permanent magnet 200 is fixedly connected to the button 100. When the button 100 is pressed, the permanent magnet 200 approaches the first Hall switch 301 and the second Hall switch 302. When the button 100 is reset, the permanent magnet 200 moves away from the first Hall switch 301 and the second Hall switch 302.

[0045] In this solution, the magnetic field strength of the magnetic field sensed by any Hall switch is changed by changing the distance between the permanent magnet 200 and the first Hall switch 301 and the second Hall switch 302, thereby causing the corresponding Hall switch to generate a Hall switch signal.

[0046] In this solution, according to design requirements, the first Hall switch 301 and the second Hall switch 302 can be configured to generate Hall switch signals based on the magnetic fields of the same or different magnetic poles of the permanent magnet 200;

[0047] For example, when two Hall switches are configured to generate Hall switch signals based on the magnetic fields of different magnetic poles of the permanent magnet 200, the two Hall switches can be arranged perpendicularly relative to the N pole and the S pole of the permanent magnet 200 in the direction of movement of the key 100;

[0048] When two Hall switches are configured to generate Hall switch signals based on the magnetic field of the same magnetic pole of the permanent magnet 200 , the two Hall switches can be arranged perpendicularly relative to the N pole or the S pole in the movement direction of the key 100 .

[0049] Based on any of the foregoing solutions, in one possible implementation, the combination switch further includes a housing;

[0050] A first cavity and an elastic component are provided in the shell;

[0051] The key is arranged in the first cavity and is slidably connected to the first cavity. The elastic component is used to provide pressing resistance and rebound force for the key.

[0052] In this solution, the first cavity is set to position the key and limit the movement direction of the key.

[0053] In this solution, one end of the button is set to contact (connect) with the elastic component. When the button is pressed, the elastic component deforms, thereby applying a certain pressing resistance to the button. When the button is released, the elastic component recovers, thereby applying a certain rebound force to the button.

[0054] In this solution, there is no limitation on the location of the elastic component. The elastic component can be coaxially arranged with the key in the direction of movement of the key, or offset from the axis of the key in the direction of movement.

[0055] In this solution, there is no limitation on the structure and material of the elastic component, and the elastic component can be a spring, a metal sheet, a silicone sleeve, etc.

[0056] Figure 2 is a schematic diagram of the parking gear key combination switch structure in the embodiment, referring to Figure 2 , based on the solution of configuring the combination switch with an elastic component, in one possible implementation, the elastic component includes a first hollow elastic component 501 and a second hollow elastic component 502;

[0057] The first hollow elastic component forms a second cavity, and the second hollow elastic component forms a third cavity;

[0058] The first Hall switch 301 is disposed in the second cavity, and the second Hall switch 302 is disposed in the third cavity.

[0059] In this solution, one end of the button 100 is in contact (connected) with both the first hollow elastic component 501 and the second hollow elastic component 502;

[0060] When the key 100 is pressed, the first hollow elastic component 501 and the second hollow elastic component 502 are deformed simultaneously to jointly provide pressing resistance for the key 100 . Correspondingly, when the key 100 is released, the two components jointly provide rebound force for the key 100 .

[0061] refer to Figure 2In this solution, the permanent magnet 200 is fixedly connected to one end of the button 100 (the end close to the first Hall switch 301 and the second Hall switch 302), and moves with the movement of the button, thereby changing the magnetic field strength at the position of (any) Hall switch by changing the distance between the permanent magnet 200 and the Hall switch.

[0062] exist Figure 2 On the basis of the illustrated solution, in one possible implementation, the first hollow elastic component 501 and the second hollow elastic component 502 are made of silicone leather cups.

[0063] Based on any of the foregoing solutions, in one possible implementation, the first Hall switch is configured to sense changes in the magnetic field of a first magnetic pole of the permanent magnet, and the second Hall switch is configured to sense changes in the magnetic field of a second magnetic pole of the permanent magnet.

[0064] Exemplarily, in this solution, the first Hall switch and the second Hall switch may be omnipolar Hall switches.

[0065] Exemplarily, in this solution, the first Hall switch is relatively vertically arranged below the first magnetic pole, and the second Hall switch is relatively vertically arranged below the second magnetic pole.

[0066] Figure 3 is another parking gear key combination switch structure block diagram in the embodiment, refer to Figure 3 Based on any of the above solutions, in one possible implementation, the combination switch further includes a control chip 600, the controller 400 is connected to the control chip 600, and the control chip 600 is also connected to the first Hall switch 301 and the second Hall switch 302;

[0067] The control chip 600 is used to supply power to the first Hall switch 301 and the second Hall switch 302 , and to convert the key signal into a communication signal output to the communication unit.

[0068] In this solution, the communication unit may be a serial communication unit, a parallel communication unit, a differential communication unit, etc.

[0069] In this solution, the control chip may be a system basis chip (SBC).

[0070] In this solution, the communication unit may specifically be a CAN communication unit, and correspondingly, the communication signal is a CAN signal.

[0071] Combination Figures 1 to 3, based on any of the above solutions, in one possible implementation, the combination switch includes: a button 100, a permanent magnet 200, a first Hall switch 301, a second Hall switch 302, a first hollow elastic component 501, a second hollow elastic component 502, a controller 400 and a control chip 600;

[0072] The button 100 is disposed in the first cavity of the housing and is slidably connected to the first cavity. The permanent magnet 200 is fixedly connected to one end of the button 100.

[0073] One end of the button 100 that fixes the permanent magnet 200 is in contact with and connected to the first hollow elastic component 501 and the second hollow elastic component 502;

[0074] The first Hall switch 301 is disposed in the second cavity formed by the first hollow elastic component 501, and the second Hall switch 302 is disposed in the third cavity formed by the second hollow elastic component 502;

[0075] The first hollow elastic component 501 and the second hollow elastic component 502 are arranged side by side, the first hollow elastic component 501 is arranged on the N-pole side of the permanent magnet 200, and the second hollow elastic component 502 is arranged on the S-pole side of the permanent magnet 200;

[0076] The first magnetic pole of the permanent magnet 200 is perpendicular to the first Hall switch 301 , and the second magnetic pole of the permanent magnet 200 is perpendicular to the second Hall switch 302 ;

[0077] The first Hall switch 301 and the second Hall switch 302 are connected to the controller 400 , the controller 400 is connected to the control chip 600 , and the control chip 600 is also connected to the first Hall switch 301 and the second Hall switch 302 .

[0078] In this solution, the controller 400 adopts MCU and the control chip 600 adopts SBC, wherein the MCU is configured to generate a key signal (electronic parking signal) according to the first Hall switch signal and the second Hall switch signal, and the SBC is used to power the first Hall switch 301 and the second Hall switch 302, and convert the key signal into a CAN signal.

[0079] In this solution, the service life of the combination switch is about 1 million times, the protection level is IP5K3, the functional safety level is ASTLB, and the rising edge / falling edge time of the controller to generate the key signal is 2.5ms.

[0080] Embodiment 2

[0081] This embodiment provides a vehicle, including any one of the parking gear button combination switches recorded in the first embodiment. The implementation method and beneficial effects of the combination switch are the same as the corresponding contents recorded in the first embodiment, and the specific contents will not be described in detail.

[0082] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A parking gear key combination switch, characterized in that: It includes a button, a permanent magnet, a first Hall switch, a second Hall switch and a controller; The button, the permanent magnet and the first Hall switch are used to generate a first Hall switch signal, and the button, the permanent magnet and the second Hall switch are used to generate a second Hall switch signal; The controller is configured to generate a key signal according to the first Hall switch signal and the second Hall switch signal.

2. The parking gear key combination switch according to claim 1, characterized in that: The permanent magnet is fixedly connected to the button. When the button is pressed, the permanent magnet approaches the first Hall switch and the second Hall switch. When the button is reset, the permanent magnet moves away from the first Hall switch and the second Hall switch.

3. The parking gear key combination switch according to claim 1, characterized in that: Also includes a housing; The housing is provided with a first cavity and an elastic component; The button is arranged in the first cavity and is slidably connected to the first cavity. The elastic component is used to provide pressing resistance and rebound force for the button.

4. The parking gear key combination switch according to claim 3, characterized in that: The elastic component includes a first hollow elastic component and a second hollow elastic component; The first hollow elastic component forms a second cavity, and the second hollow elastic component forms a third cavity; The first Hall switch is disposed in the second cavity, and the second Hall switch is disposed in the third cavity.

5. The parking gear key combination switch according to claim 1, characterized in that: The first Hall switch is configured to sense a change in a magnetic field of a first magnetic pole of the permanent magnet, and the second Hall switch is configured to sense a change in a magnetic field of a second magnetic pole of the permanent magnet.

6. The parking gear key combination switch according to claim 4, characterized in that: The first hollow elastic component and the second hollow elastic component are made of silicone leather cups.

7. The parking gear key combination switch according to claim 1, characterized in that: It also includes a control chip, the controller is connected to the control chip, and the control chip is also connected to the first Hall switch and the second Hall switch; The control chip is used to supply power to the first Hall switch and the second Hall switch, and to convert the key signal into a communication signal output to the communication unit.

8. The parking gear key combination switch according to claim 7, characterized in that: The communication signal is a CAN signal.

9. The parking gear key combination switch according to claim 1, characterized in that: The controller adopts a single chip microcomputer.

10. A vehicle, characterized in that: It comprises the parking gear key combination switch as described in any one of claims 1-9.

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