Disclosed is a motor pump unit for a steering apparatus capable of preventing a relief valve from being tilted while improving pressure holding performance. The steering apparatus includes: a pump housing portion formed with an internal flow path portion through which a fluid discharged from a gear pump portion moves as a gear portion that receives the power from a motor is rotated, and a discharge flow path portion communicating with the internal flow path portion and discharging the fluid to the outside; a seat portion provided between the internal flow path portion and the discharge flow path portion; a relief valve portion that moves up and down on a valve moving path portion formed inside the pump housing portion to opens and close the seat portion; a cap portion installed on the pump housing portion; and a pressing member which is provided between the cap portion and the relief valve portion to press the relief valve portion toward the seat portion. The relief valve portion and the seat portion have magnetic properties and are magnetized to have the same polarity, so that a repulsive force is generated between the relief valve portion and the seat portion.
조향장치용 모터펌프유닛에 관한 발명이 개시된다. 개시된 조향장치용 모터펌프유닛은 모터로부터 동력을 전달받은 기어부가 회전됨에 따라 기어펌프부로부터 송출되는 유체가 이동하는 내부유로부와, 내부유로부와 연통되고 유체를 외부로 토출하는 토출유로부가 형성되는 펌프하우징부와, 내부유로부와 토출유로부 사이에 설치되는 시트부 및 펌프하우징부의 내부에 형성되는 밸브이동로부 상에서 승강이동하며 시트부를 개폐하는 릴리프밸브부와, 펌프하우징부에 설치되는 캡부 및 캡부와 릴리프밸브부 사이에 설치되고, 릴리프밸브부를 시트부 측으로 가압하는 가압부재를 포함하고, 릴리프밸브부와 시트부는 자성을 가지며, 동일극으로 자화되어 릴리프밸브부와 시트부 간에 척력이 발생되는 것을 특징으로 한다.
MOTOR PUMP UNIT FOR STEERING APPARATUS
조향장치용 모터펌프유닛
2019-01-30
Patent
Elektronische Ressource
Koreanisch
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |