According to the present invention, a piston pump of a brake system for a vehicle comprises: a pump chamber; a piston unit which is accommodated in the pump chamber to be movable, and compresses oil in the pump chamber; a first elastic unit which is connected to one end of the piston unit and maintains or releases the airtightness inside the pump chamber by being elastically transformed; and a second elastic unit which is installed inside the first elastic unit and elastically transforms the first elastic unit by being compressed and expanded according to changes in the internal pressure of the pump chamber. Therefore, the piston pump can achieve the maintenance of airtightness in the pump chamber and a check valve function at the same time by an elastic member made of a metal board and a lip type elastic member.
본 발명에 따른 차량 제동장치의 피스톤 펌프는, 펌프실; 펌프실 내부에 이동 가능하게 수용되며, 펌프실의 내부의 오일을 압축시키는 피스톤부; 피스톤부의 일단에 연결되고, 탄성 변형되면서 펌프실의 내부의 기밀을 유지 또는 해제하는 제1탄성부; 및 제1탄성부 내부에 설치되고, 펌프실의 내부 압력 변화에 따라 압축 팽창하면서 제1탄성부를 탄성 변형시키는 제2탄성부;를 포함하는 것을 특징으로 한다.
PISTON PUMP OF BRAKE SYSTEM FOR VEHICLE
차량 제동장치의 피스톤 펌프
2016-04-21
Patent
Elektronische Ressource
Koreanisch