What is the Principle of the Handbrake?

[DiAlex]

The working principle of the handbrake mainly involves the friction clamping between the brake shoe and the brake drum or between the friction plate and the brake disc to achieve parking. Here is some information about the handbrake: 1. The professional term for the handbrake is the auxiliary brake. Unlike the principle of the main brake, it uses a steel wire cable connected to the rear brake shoe to brake the vehicle. 2. Long-term use of the handbrake can cause the steel wire to undergo plastic deformation. Since this deformation is irreversible, prolonged use will reduce its effectiveness, and the handbrake's travel distance will also increase. Additional Information: For small cars, some handbrakes are located behind the transmission, where there is a brake disc connected to the drive shaft, similar to a disc brake. The pulling force is transmitted there through a steel cable to achieve parking braking. After pulling the handbrake, it uses a hydraulic auxiliary cylinder to push the main hydraulic cylinder under the car, which then drives the air valve. Once the air valve is activated, it brakes the drive shaft.