Hydraulic control device for controlling clutch of car, has elastic element placed between portable unit and end of piston, and locking unit for alternatively locking portable unit with body or piston

摘要

The device (4) has a piston (11) mounted in a body (10), where one end of the piston is connected with a control rod (3) while another end forms a mobile wall of a chamber (12) that contains pressurized hydraulic fluid. A portable unit (14) is mounted between the piston and the body to move according to displacement direction of the piston. An elastic element (16) i.e. helicoid spring, is placed between the portable unit and the former end of the piston. A locking unit (17) alternatively locks the portable unit with the body or the piston. An independent claim is also included for a method for assisting a hydraulic control of a hydraulic control device.