Force sensor signal transmission device, controller assembly and mechanical drive-by-wire system

Abstract

The invention discloses a force sensor signal transmission device, a controller assembly and a mechanical drive-by-wire system.The force sensor signal transmission device comprises an elastic assembly and a supporting assembly, the elastic assembly is fixedly installed at the top of the supporting assembly, a first elastic piece is arranged in the elastic assembly, a conductor is arranged in the supporting assembly, and a second elastic piece is arranged in the conductor; and the conductor is connected with the first elastic piece. According to the force sensor signal transmission device, the controller assembly and the mechanical drive-by-wire system, through connection of the first elastic piece and the conductor, the size of the force sensor signal transmission device is reduced, the occupied space is reduced, an external connecting wire harness is not needed, and higher safety and reliability are achieved.

Description

Technical Field

[0001] The present invention belongs to the field of brake calipers, and particularly relates to a force sensor signal transmission device, a controller assembly, and a mechanical by-wire system. Background Art

[0002] An electromechanical brake (EMB) is an automotive braking system. Through a transmission device such as a gear or a lead screw, the motor converts rotational motion into linear motion to push the brake actuator, causing the brake pads to contact the brake disc or brake drum, generating frictional force, thereby achieving vehicle braking. When braking, a force sensor is required to monitor the clamping force at the wheel end. The most commonly used force sensor is a ring force sensor, which is often arranged inside the caliper body. When the brake is actuated, the pressure signal output by the force sensor is transmitted to the controller, and the controller controls the brake caliper to output a corresponding braking force for the closed-loop control of the system.

[0003] There are usually two connection methods for the force sensor in the prior art. One is to increase the distance between the bottom surface of the caliper body cylinder port and the controller mounting surface, and install a connector between the two surfaces. However, this installation method occupies more space at the wheel end and is not convenient for vehicle layout. The other method is to connect a wire harness between the controller and the force sensor, so that the signal can be transmitted inside the controller. The wire harness of this method needs to be externally connected, which not only increases the cost but also brings new structural problems such as wire harness routing and fixing. Summary of the Invention

[0004] The object of the present invention is to provide a force sensor signal transmission device, a controller assembly, and a mechanical by-wire system to solve the problem of inconvenient signal connection between the force sensor and the controller in the prior art without increasing the volume of the mechanical by-wire system.

[0005] To this end, in the first aspect of the present invention, a force sensor signal transmission device is provided, including an elastic component and a support component. The elastic component is fixedly installed on the top of the support component. A first elastic member is arranged inside the elastic component, and a conductor is arranged inside the support component. The conductor is connected to the first elastic member.

[0006] Preferably, the elastic component includes a mounting seat. A plurality of mounting holes are arranged inside the mounting seat. The first elastic member is fixedly installed in the mounting holes, and the top of the first elastic member extends above the mounting seat.

[0007] Preferably, the support component includes a support seat. A fitting groove is arranged inside the support seat. The conductor is fixedly installed in the fitting groove.

[0008] Preferably, the support seat is L-shaped.

[0009] Preferably, an inlet hole is provided at the bottom of the support base.

[0010] Preferably, a clamping groove is provided at the bottom of the mounting base, a clamping block is provided at the top of the support base, and the clamping groove is connected to the clamping block in a matching manner.

[0011] Preferably, the bottom of the first elastic member is in contact connection with the top of the conductor.

[0012] In a second aspect, a controller assembly is provided, which includes a force sensor, a controller, and the force sensor signal transmission device as described above. A second elastic member is provided at the top of the force sensor, the second elastic member is connected to the support assembly, a circuit board is provided in the controller, and the circuit board is connected to the elastic assembly.

[0013] Preferably, a seal is provided on the side wall of the support assembly, and the seal is used for sealing between the force sensor signal transmission device and the controller.

[0014] In a third aspect, a mechanical by-wire system is provided, which includes a gearbox, a caliper body, and the controller assembly as described above. The controller is connected to the gearbox, and the gearbox is connected to the caliper body.

[0015] Advantageous effects:

[0016] 1. The present invention provides a force sensor signal transmission device, a controller assembly, and a mechanical by-wire system. By connecting the first elastic member and the conductor, the volume of the force sensor signal transmission device is reduced, the occupied space is reduced, and there is no need for external connection wires, which has higher safety and reliability.

[0017] 2. The elasticity of the first elastic member and the second elastic member in the present invention can eliminate the stress generated by the force sensor on the circuit board of the controller during vehicle operation, and avoid damage to the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic structural diagram of a force sensor signal transmission device in the present invention.

[0020] Figure 2Schematic diagram of the elastic component of a force sensor signal transmission device in the present invention.

[0021] Figure 3 Schematic diagram of the support component of a force sensor signal transmission device in the present invention.

[0022] Figure 4 Cross-sectional view of a force sensor signal transmission device in the present invention.

[0023] Figure 5 Schematic diagram of a controller assembly in the present invention.

[0024] Figure 6 Schematic diagram of the interior of a controller assembly in the present invention.

[0025] Figure 7 Cross-sectional view of a controller assembly in the present invention.

[0026] Figure 8 Schematic diagram of a mechanical by-wire system in the present invention.

[0027] In the figure, 1000 - controller assembly, 1100 - force sensor signal transmission device, 1110 - elastic component, 1111 - first elastic member, 1112 - mounting base, 1113 - mounting hole, 1114 - card slot, 1120 - support component, 1121 - conductor, 1122 - support seat, 1123 - fitting groove, 1124 - introduction hole, 1125 - clamping block, 1130 - seal, 1200 - force sensor, 1210 - second elastic member, 1300 - controller, 1310 - circuit board, 2000 - gearbox, 3000 - pliers body. Detailed description of specific embodiments

[0028] The content of the present invention can be more easily understood by referring to the following detailed description of the preferred embodiments of the present invention and the included examples. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. When there is a contradiction, the definition in this specification shall prevail.

[0029] Example 1:

[0030] As Figure 1-4As shown in the figure, in the first aspect of this embodiment, a force sensor signal transmission device is provided, which includes an elastic component 1110 and a support component 1120. The elastic component 1110 is fixedly installed on the top of the support component 1120. A first elastic member 1111 is arranged inside the elastic component 1110, and a conductor 1121 is arranged inside the support component 1120. The conductor 1121 is connected to the first elastic member 1111. Through the connection between the first elastic member 1111 and the conductor 1121, the volume of the force sensor signal transmission device is reduced, the occupied space is decreased, and there is no need for external connection wires, which has higher safety and reliability.

[0031] The elastic component 1110 includes a mounting base 1112. A number of mounting holes 1113 are arranged inside the mounting base 1112. The first elastic member 1111 is fixedly installed inside the mounting holes 1113, and the top of the first elastic member 1111 extends above the mounting base 1112. In one embodiment, three mounting holes 1113 are provided, and one first elastic member 1111 is fixedly installed inside each mounting hole 1113. The first elastic member 1111 is an elastic conductive member, preferably a spring, and the surface of the spring is silver-plated or gold-plated.

[0032] The support component 1120 includes a support base 1122. A fitting groove 1123 is arranged inside the support base 1122. The conductor 1121 is fixedly installed inside the fitting groove 1123. The support base 1122 is L-shaped, and an inlet hole 1124 is arranged at the bottom of the support base 1122. The bottom of the first elastic member 1111 is in contact connection with the top of the conductor 1121. The support base 1122 is used for fixedly supporting the conductor 1121. The support base 1122 is preferably integrally formed by injection molding. Three fitting grooves 1123 are provided, and one conductor 1121 is arranged inside each fitting groove 1123. The material of the conductor 1121 is metal, preferably copper, and both ends of the conductor 1121 are silver-plated or gold-plated. The inlet hole 1124 is used to provide guidance for the force sensor, so that the force sensor and the conductor 1121 can be in contact.

[0033] A clamping groove 1114 is arranged at the bottom of the mounting base 1112, and a clamping block 1125 is arranged at the top of the support base 1122. The clamping groove 1114 and the clamping block 1125 are in mating connection. Through the mating connection between the clamping block 1125 and the clamping groove 1114, the support base 1122 and the mounting base 1112 are fixedly connected.

[0034] In the second aspect, as Figure 5-7As shown in the figure, a controller assembly is provided, which includes a force sensor 1200, a controller 1300, and a force sensor signal transmission device 1100. A second elastic member 1210 is provided at the top of the force sensor 1200. The second elastic member 1210 is connected to the support assembly 1120. A circuit board 1310 is provided inside the controller 1300, and the circuit board 1310 is connected to the elastic assembly 1110. The second elastic member 1210 is a conductive elastomer, preferably a spring, and the surface of the spring is silver-plated or gold-plated to enhance conductivity. The second elastic member 1210 is guided through the introduction hole 1124 in the force sensor signal transmission device 1100, so that the second elastic member 1210 can penetrate into the introduction hole 1124 and be connected to the conductor 1121.

[0035] A seal 1130 is provided on the side wall of the support assembly 1120. The seal 1130 is used for sealing between the force sensor signal transmission device 1100 and the controller 1300. The seal 1130 can be an O-ring or sealed with sealant.

[0036] In a third aspect, as Figure 8 shown in the figure, a mechanical by-wire system is provided, which includes a gearbox 2000, a caliper body 3000, and a controller assembly 1000. The controller assembly 1000 is connected to the gearbox 2000, and the gearbox 2000 is connected to the caliper body 3000.

[0037] By using the second elastic member 1210 as the signal extraction device of the force sensor 1200, the force sensor signal transmission device 1100 is assembled, and the top is in contact connection with the circuit board 1310. After testing that the conduction and contact resistance are normal, the tested force sensor signal transmission device 1100 is fixed in the gearbox 2000, the gearbox 2000 and the controller 1300 are assembled together, and then the gearbox 1200 and the controller 1300 are assembled with the caliper body 3000. The force sensor signal transmission device 1100 transmits the signal of the force sensor 1200 to the circuit board 1310, and the controller 1300 generates a control signal according to the signal of the circuit board 1310 to achieve the control of the braking force.

[0038] The above-described embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A force sensor signal transmission device, characterized in that: It comprises an elastic component and a supporting component. The elastic component is fixedly mounted on the top of the supporting component. A first elastic member is arranged in the elastic component. A conductor is arranged in the supporting component. The conductor is connected to the first elastic member.

2. A force sensor signal transmission device according to claim 1, characterized in that: The elastic component comprises a mounting seat, a plurality of mounting holes are arranged in the mounting seat, the first elastic member is fixedly mounted in the mounting holes, and the top of the first elastic member extends to the top of the mounting seat.

3. A force sensor signal transmission device according to claim 2, characterized in that: The support assembly comprises a support seat, an embedding groove is arranged in the support seat, and the conductor is fixedly installed in the embedding groove.

4. A force sensor signal transmission device according to claim 3, characterized in that: The supporting seat is L-shaped.

5. A force sensor signal transmission device according to claim 4, characterized in that: The bottom of the support seat is provided with an introduction hole.

6. A force sensor signal transmission device according to claim 3, characterized in that: A card slot is arranged at the bottom of the mounting seat, a card block is arranged at the top of the supporting seat, and the card slot is matched and connected with the card block.

7. A force sensor signal transmission device according to claim 6, characterized in that: The bottom of the first elastic member is in contact with the top of the conductor.

8. A controller assembly, characterized in that: It comprises a force sensor, a controller and a force sensor signal transmission device as described in any one of claims 1 to 7, wherein a second elastic member is arranged on the top of the force sensor, the second elastic member is connected to the supporting component, a circuit board is arranged in the controller, and the circuit board is connected to the elastic component.

9. A controller assembly according to claim 8, characterized in that: The side wall of the support assembly is provided with a sealing member, and the sealing member is used for sealing between the force sensor signal transmission device and the controller.

10. A mechanical wire control system, characterized in that: It comprises a gear box, a caliper body and a controller assembly as claimed in any one of claims 8 to 9, wherein the controller is connected to the gear box, and the gear box is connected to the caliper body.

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