BRAKE LIQUID PRESSURE CONTROL VALVE

摘要

PURPOSE:To minimize the stepping force by employing a L-shaped member to block the motion of a stepped piston through the motion of a sleeve piston upon failure of one system and releasing the liquid pressure control of the other system. CONSTITUTION:A stepped piston is applied with the force of springs 10, 36 and moved inwardly by the liquid pressure force to close a valve body 19 thus to perform the liquid pressure control. Upon failure on one system, a sleeve piston 25 will move in said direction to rotate a L-shaped member 27 in the direction C. Consequently said member 27 will engage with a circular end face 51 of a tubular member 37, to block the motion of a stepped piston 12 at the other end. Consequently the liquid pressure control of the other system is released to minimize the loss of the stepping force.