The present invention relates to a pump device for an electronic control brake system. The pump device includes: a housing portion; a motor cam portion mounted on the housing portion; a piston portion which is housed in the housing portion and is moved by friction with the motor cam portion; a pressing portion which is connected to an end portion of the piston portion and moves to guide oil supplied through the piston portion, in which a restoring force is applied to the pressing portion; an inlet portion which is accommodated in the housing portion and into which the pressing portion is inserted, in which the inlet portion stores the oil supplied through the pressing portion; a filter portion accommodated in the housing portion and coupled to the inlet portion to surround the piston portion and prevent foreign matter from entering the piston portion; a sealing portion disposed between the inlet portion and the pressing portion to prevent oil leakage; and a discharge portion which is accommodated in the housing portion to selectively permit the discharge of the oil in accordance with the pressure of the oil stored in the inlet portion. According to the present invention, restoration of the piston portion and the pressing portion can be smoothly performed.
본 발명은 전자제어식 브레이크 시스템용 펌프장치에 관한 것으로, 하우징부와, 하우징부에 장착되는 모터캠부와, 하우징부에 내장되고 모터캠부와의 마찰에 의해 이동되는 피스톤부와, 피스톤부의 단부와 연결되어 이동되고 피스톤부를 통해 공급되는 오일을 안내하고 복원력이 형성되는 압박부와, 하우징부에 내장되고 압박부가 삽입되며 압박부를 통해 공급되는 오일을 저장하는 유입부와, 하우징부에 내장되고 유입부에 결합되어 피스톤부를 감싸며 피스톤부로의 이물질 유입을 방지하는 필터부와, 유입부와 압박부 사이에 배치되어 누유를 방지하는 밀봉부와, 하우징부에 내장되고 유입부에 저장된 오일의 압력에 따라 오일의 토출을 선택적으로 허용하는 배출부를 포함하여, 피스톤부와 압박부의 복원이 원활하게 이루어질 수 있다.
PUMP DEVICE FOR ELECTRONIC CONTROL BRAKE SYSTEM
전자제어식 브레이크 시스템용 펌프장치
2019-02-12
Patent
Electronic Resource
Korean
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |