Intelligent parking brake self-locking device

Abstract

The invention discloses an intelligent parking brake self-locking device which comprises disc brake calipers, a steel wire, a motor, a rotating disc and an angle sensor. The disc brake calipers are fixed on the front wheel assembly with the brake disc, one end of the steel wire is connected with the disc brake calipers, the other end of the steel wire is fixed on the rotating disc, the motor drives the rotating disc to rotate, and the steel wire is wound on the rotating disc so as to tension the disc brake calipers; the angle sensor is arranged on the rotating disc, and the braking state and the braking loosening state are determined through the angle sensor; the self-locking device provided by the embodiment of the invention is a device with independent automatic parking braking and locking functions, and can be used together with a left and right hand brake braking system with a self-locking parking function on the market, so that a plurality of brake calipers clamp a brake disc together, and the parking resistance is larger and the safety is higher even under the condition that the whole vehicle is fully loaded.

Description

Technical Field

[0001] The invention belongs to the technical field of brake self-locking, and in particular relates to an intelligent parking brake self-locking device. Background Art

[0002] At present, the parking brake and self-locking device of two-wheeled and three-wheeled vehicles are realized through the electromagnetic induction mechanism inside the motor. Specifically, when the motor stops rotating, the induced electromotive force and electric field inside the motor will disappear due to the electromagnetic induction phenomenon. In this way, the motor can no longer generate new electromotive force and electric field, so it will not generate driving torque, thereby effectively preventing the motor from rotating on its own. In addition, the motor lock of the electric vehicle may also involve anti-theft functions, such as automatically locking the motor through the controller to prevent the vehicle from being stolen. In this case, the motor lock usually controls the conduction of the power device through the MCU (microcontroller unit) in the controller to achieve the locking of the motor.

[0003] However, the parking brakes and self-locking devices of existing two-wheeled and three-wheeled vehicles have the disadvantages of complex systems, high costs, large installation space, and inconvenient application. Summary of the invention

[0004] Purpose of the invention: In order to solve the shortcomings of the parking brakes and self-locking devices of existing two-wheeled and three-wheeled vehicles, the present invention proposes an intelligent parking brake self-locking device.

[0005] Technical solution: An intelligent parking brake self-locking device, comprising: a disc brake caliper, a steel wire, a motor, a rotating disk and an angle sensor; the disc brake caliper is fixed on a front wheel assembly with a brake disc, one end of the steel wire is connected to the disc brake caliper, and the other end thereof is fixed on the rotating disk, the motor drives the rotating disk to rotate, the steel wire is wound around the rotating disk, and then the disc brake caliper is tightened; the angle sensor is arranged on the rotating disk, and the angle sensor is used to determine the braking state and the releasing state of the brake.

[0006] Furthermore, the rotating disk is an elliptical rotating disk.

[0007] Furthermore, a groove for winding the steel wire is provided on the rotating disk.

[0008] Furthermore, the angle sensor is connected to an external MCU to transmit angle information of the angle sensor to the external MCU.

[0009] Furthermore, the angle information is a voltage change value.

[0010] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0011] (1) The self-locking device proposed by the present invention has the advantages of simple structure, practical principle, low cost and wide application;

[0012] (2) The self-locking device proposed in the present invention is an integrated module that can adapt to a high-efficiency continuously variable transmission system in a narrow space and can feedback the user's intention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural schematic diagram of an intelligent parking brake self-locking device proposed by the present invention;

[0014] Figure 2 It is a schematic diagram of the structure of a disc brake caliper assembly;

[0015] Figure 3 It is a schematic diagram of the structure of an elliptical rotating disk;

[0016] Figure 4 It is a schematic diagram of the structure of an elliptical rotating disk;

[0017] Figure 5 This is a linear graph of the angle sensor voltage and angle. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is now further described in conjunction with the accompanying drawings and embodiments.

[0019] like Figure 1 As shown, the present embodiment proposes an intelligent parking brake self-locking device, which mainly includes: a disc brake caliper assembly 1 and a control unit; one end of the disc brake caliper assembly 1 is fixed to a front wheel assembly with a brake disc through an adapter mounting seat, and the front wheel assembly with a brake disc is assembled on the front fork of the whole vehicle; the other end of the disc brake caliper assembly 1 is connected to the control unit. The control unit controls the disc brake caliper assembly 1 to tighten the disc brake caliper, which plays the same role as manually pulling the brake handle to brake.

[0020] Specifically, Figure 2 As shown, the disc brake caliper assembly 1 of this embodiment includes a disc brake caliper, a steel wire 11 and other components; one end of the steel wire is connected to the disc brake caliper, and the other end thereof is fixed inside the control unit.

[0021] like Figure 3 and Figure 4 As shown, the control unit 3 of this embodiment includes a motor, an elliptical rotating disk 2 and an angle sensor; the other end of the steel wire in the disc brake caliper assembly 1 is fixed on the elliptical rotating disk 2, the elliptical rotating disk 2 is connected to the motor, and the angle sensor is arranged on the elliptical rotating disk 2. The motor drives the elliptical rotating disk 2 to rotate, and then the steel wire is coiled in the groove of the elliptical rotating disk, and the steel wire is wound around the elliptical rotating disk, thereby tightening the disc brake caliper, which plays the same role as manually pulling the brake handle.

[0022] The angle sensor installed on the elliptical rotating disk has the following relationship between voltage and angle: Figure 5 As shown in the figure, in order to control the brake reaction time within 3S, since the motor speed is constant, only the brake angle range can be controlled. When the machine is turned on, the MCU will issue a command, and the parking brake will automatically calculate the brake stroke by releasing and then holding the brake disc, so as to automatically calibrate and compensate for the wear of the brake pad. Therefore, every time the MCU calibrates and compensates for the wear of the brake pad, the brake state is used as a reference, and then the motor is controlled to rotate so that the elliptical rotating disk is loosened by a certain angle, from the braking state to the released brake state. The released brake state refers to the state when the relative gap between the brake pad and the brake disc on one side is 0.7mm, so as to obtain the working rotation angle range of the elliptical rotating disk after this calibration. At the same time, the angle sensor sends its own voltage change value to the MCU, and the MCU can give an execution command based on this voltage change value.

[0023] The self-locking device proposed in this embodiment is a device with independent automatic parking brake and vehicle locking functions, which can be used together with the brake system with self-locking parking function on the left and right hand brakes on the market. In this way, multiple brake calipers clamp the brake disc together, and even if the vehicle is fully loaded, the parking resistance is greater and safer. At the same time, the self-locking device proposed in this embodiment can automatically lock the vehicle intelligently in the case of short-term parking, automatic sleep or power failure. This function can reduce the trouble of couriers frequently closing and locking the vehicle, greatly saving the energy of couriers.

Claims

1. An intelligent parking brake self-locking device, characterized in that: include: It includes a disc brake caliper, a steel wire, a motor, a rotating disk and an angle sensor; the disc brake caliper is fixed on a front wheel assembly with a brake disc, one end of the steel wire is connected to the disc brake caliper, and the other end is fixed on the rotating disk, the motor drives the rotating disk to rotate, the steel wire is wound around the rotating disk, and then the disc brake caliper is tightened; the angle sensor is arranged on the rotating disk, and the angle sensor is used to determine the braking state and the released braking state.

2. The intelligent parking brake self-locking device according to claim 1, characterized in that: The rotating disk is an elliptical rotating disk.

3. The intelligent parking brake self-locking device according to claim 1, characterized in that: The rotating disk is provided with grooves for winding the steel wire.

4. The intelligent parking brake self-locking device according to claim 1, characterized in that: The angle sensor is connected to the external MCU and is used to transmit angle information of the angle sensor to the external MCU.

5. The intelligent parking brake self-locking device according to claim 4, characterized in that: The angle information is a voltage change value.

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