Hydraulic brake has control piston interacting with spring element so force is transferred from spring element to brake piston in actuation direction after removing hydraulic pressure chamber pressure

摘要

The hydraulic vehicle brake has a parking brake device, a working pressure chamber bounded by a brake piston on which the parking brake acts and a device for locking the parking brake device in the applied state. A hydraulic pressure chamber is bounded by a control piston that interacts with a spring element so force is transferred from the spring element to the brake piston after removing the pressure in the hydraulic pressure chamber. The hydraulic vehicle brake has a parking brake device, a housing in which a hydraulic operating pressure chamber (7) is bounded by a brake piston (6) on which the parking brake acts and a locking device with which the parking brake device can be locked in the applied state. A hydraulic pressure chamber (13) connected to the operating pressure chamber is bounded by a control piston (12) that interacts with a spring element (14) so that force is transferred from the spring element to the brake piston in the actuation direction after removing the pressure in the hydraulic pressure chamber.