The parking brake, also known as the emergency brake, is a mechanical device that is used to keep a vehicle from moving when it is parked. It is typically engaged by pulling up on a lever or pressing down on a pedal.
The parking brake works by mechanically locking the rear wheels of the vehicle in place. This is done by engaging a set of brake shoes or pads against the inside of the brake drums or rotors. When the parking brake is engaged, the brake shoes or pads are forced against the drums or rotors with enough force to prevent the wheels from turning.
Types of Parking Brake Mechanisms
There are two main types of parking brake mechanisms:
* Drum brakes: Drum brakes use a set of brake shoes that are pressed against the inside of a brake drum. Drum brakes are less common than disc brakes, but they are still used on some older vehicles.
* Disc brakes: Disc brakes use a set of brake pads that are pressed against a brake rotor. Disc brakes are more common than drum brakes, and they are found on most modern vehicles.
How the Parking Brake Works
When the parking brake is engaged, the brake shoes or pads are forced against the drums or rotors with enough force to prevent the wheels from turning. This is done by either pulling up on a lever or pressing down on a pedal.
On vehicles with drum brakes, the parking brake lever is typically located under the dashboard. When the lever is pulled up, it engages a set of cables that run to the rear brakes. The cables pull on the brake shoes, forcing them against the inside of the brake drums.
On vehicles with disc brakes, the parking brake pedal is typically located next to the regular brake pedal. When the pedal is pressed down, it engages a set of hydraulic lines that run to the rear brakes. The hydraulic lines increase the pressure of the brake fluid, which forces the brake pads against the brake rotors.
Parking Brake Safety
The parking brake is an important safety feature that should be used every time you park your vehicle. It can help to prevent your vehicle from rolling away and causing an accident.
* Always engage the parking brake when you park your vehicle, even if it is in gear. This will help to ensure that your vehicle does not roll away.
* Do not use the parking brake as a substitute for the regular brakes. The parking brake is not designed to stop your vehicle while you are driving.
* Have your parking brake inspected regularly by a qualified mechanic. This will help to ensure that the parking brake is working properly.
