Parking brake, handbrake, handbrake is all about the same device, which is present in all cars without exception. The name is "parking" because it was used precisely during the parking lot and "manual" because it is often activated not pedal, but with the lever located in the passenger compartment.
The purpose of the handbrake is to keep the car for a long time in a parking lot. But it is often used during the movement-so probably many drivers remember one of the most difficult tasks when passing an examination on the platform-"an overpass"-when it is necessary to move on the rise. In this situation, the hand brake is a very useful thing: its use prevents the car from rolling back.
On the rear-wheel-drive vehicles, the parking brake will help to make a sharp turn. This tactic is particularly popular in the drifting and rally racing series.
There is a handbrake and a third function-it also serves as an emergency emergency system: in an emergency situation, it is possible to obtain a quick and complete stop of the car by using the parking brake.
Device and operating principles
The brake actuator has a brake actuator and braking mechanisms in general as any brake system. In this case, the parking brake design provides for the use of rear wheel braking devices.
The brake actuator performs the function of passing the brake force from the driver to the engine: the motorist lifts or drops the lever, in some cases pushing the pedal. The lever is usually to the right of the driver's chair. It has a ratchet mechanism which is responsible for ensuring that the brakes are in operation. A shut-off or actuation of the parking brake lamp is integrated into the lever. Simply put, you lift the lever on the panel with a light warning of the actuation of the parking brake.
The force shall then be transmitted to the braking mechanism by means of one or more cables. The most common use is three cables: front (or central)-connected directly to the handbrake, and two rear cables are connected to the brake mechanism itself. Using a device called "equalizer" or "root", the front and rear ropes are connected and the force is transmitted evenly.
The parking brake mechanism has a number of details. These are, for example, regulated and unregulated spenders which connect the cables to the braking elements. Adjustable ropes are provided with nuts that can be used to change the length of the drive.
When the driver drops the handbrake, the system returns to its original position, due to a return spring. It may have different positions-in the front cable, equalizer or directly at the braking mechanism.
But this is all about the parking brakes. But there are drums. In this case, the braking is made by a separate lever connected with the rear cable with one end and the other with the brake shoe. It moves the lever that pushes the leading brake pad, and with the guest-shoe, to the brake drum: wheel lockout.
The parking brake may be operated not only by a lever, but also by pressing the pedal which is near the brake pedal on the vehicles with ACPR. With the application of the pedal, the parking brake is activated and the release process is released when the brake is applied again.
There are other parking brake options, for example, on the domestic "Volga" vehicles, the lever was located not near the driver's seat, but at the steering column.
On some vehicles, such as trucks and some SUVs, the parking brake is not on wheels, but on a transmission. This is what he has been called "transmission" or "central" brake. In such vehicles the parts of the brake are located on the sliding box or the CP, and interact with the shaft.
Modern cars are increasingly equipped with an electronic parking brake actuator, the parking brake is called the parking brake. This system has an electric motor, which interacts with disc brakes.
Operational issues
It is worth noting that the hand brake requires constant use, otherwise it is unserviceable. This is because the cables may quire and the braking system will cease to function. However, it is also harmful to leave the car for a long time on the parking brake, so the wheels can rust to the drum.
However, drivers whose cars are equipped with automatic gearbox often do not use a handbrake at all-simply put the lever in the right position (usually called "P"-from the English word ") and the car will remain on the gradient, as the cartons will be blocked.