CONTROLLING VALVE FOR INTEGRAL TYPE POWER STEERING DEVICE

摘要

PURPOSE: A controlling valve for an integral type power steering device is provided to save manufacturing cost by simplifying a manufacturing equipment of a valve and to decrease an efficiency deviation of the valve. CONSTITUTION: A controlling valve for an integral type driving force steering device contains:three shaft direction oil passage grooves(11') on a circumferential surface of a controlling valve shaft(11) for being separated with a span of 120 degrees; and an inclined oil passage groove(11'') in the space between the shaft direction oil passage grooves for being separated with a span of 120 degrees. Herein, the inclined oil passage groove is formed for being inclined for a certain angles to the shaft direction and is arranged for penetrating to a pressure port(P) for operating as a chamfer.