Decoupling type electric power-assisted brake device

Abstract

The invention discloses a decoupling type electric power-assisted brake device which comprises a box body, a pedal foot feeling simulation mechanism, a transmission mechanism, an anti-rotation mechanism, a brake master cylinder, an angle sensor, a motor and a pedal. The rotation angle change of the pedal is fed back to the brake control system through the angle sensor, the motor is controlled to work, the motor drives the transmission mechanism to rotate synchronously and axially pushes the anti-rotation mechanism through the transmission mechanism, and the brake master cylinder is pushed through parts in the anti-rotation mechanism to complete braking. The pedal foot feeling simulation mechanism penetrates through the transmission mechanism, a decoupling gap is formed between the pedal foot feeling simulation mechanism and the anti-rotation mechanism, the pedal foot feeling simulation mechanism can eliminate the decoupling gap and directly push the anti-rotation mechanism in the axial direction, and failure emergency braking is completed by pushing the brake master cylinder through parts in the anti-rotation mechanism. The layout mode of electric power assisting and pedal force decoupling is adopted, the foot feeling is comfortable, and safety and reliability are achieved; the device has the advantages of being simple in structure, fast in response, low in noise and the like, and automatic braking in automatic driving is met.

Description

technical field [0001] The invention belongs to the technical field of brakes, and in particular relates to a decoupling electric power-assisted braking device. Background technique [0002] The braking system is an important part of the driving control of the car. At present, the brake booster of the car mostly adopts the form of a vacuum booster; with the development of new energy vehicles and driverless technology, the requirements for the braking system of the car are getting higher and higher. Since the power system of an electric vehicle is replaced by an internal combustion engine by a drive motor, the traditional vacuum booster brake can no longer obtain a vacuum booster source from the internal combustion engine. The running electronic vacuum pump generates a vacuum source in the vacuum reservoir air tank through the vacuum pump, and then provides a vacuum source for the vacuum booster brake. [0003] The transmission vacuum booster needs the engine to provide a va...

AI Technical Summary

Problems solved by technology

The electric power-assisted brake adjusts the magnitude of the power assist by controlling the output torque of the motor. The existing electric power-assisted brakes still have problems such as complicated connection control, insufficient response and poor foot comfort, which need to be improved.

Images