AUTO ADJUSTING APPARATUS FOR FREE STROKE OF AUTOMOBILE BRAKE MASTER CYLINDER

摘要

PURPOSE: An automatic device for controlling a free stroke of a master cylinder for a vehicle brake is provided to prevent a brake from being powered when hydraulic force exceeds a standard value by reducing the length of a push rod. CONSTITUTION: An automatic device for controlling a free stroke of a master cylinder for a vehicle brake comprises a pressure sensor(110), a conveyor(120), and a control unit(130). The pressure sensor is installed inside a master cylinder(20) and measures the pressure of a brake oil. The conveyor is installed between a piston(21) and a push rod(11) and pushes or pull the piston regardless of external force transferred from the push rod. The control unit controls the movement of the piston.