Provided is a rack driven power assistance steering apparatus. The rack driven power assistance steering apparatus of the present invention comprises: a rack bar wherein an outer circumferential screw groove is formed on the outer circumferential surface; a ball nut which has an inner circumferential screw groove corresponding to the outer circumferential screw groove on the inner circumferential surface and wherein a bearing is coupled to outer circumferential surface one side; a nut pulley having a belt coupling unit on the outer circumferential surface, a coupling end unit coupled to the outer circumferential surface of the ball nut and supporting the bearing at inner circumferential surface one side end, and an enlarged diameter unit which is stepped at the coupling end unit and has an enlarged inner diameter at inner circumferential surface other side end. Provided is the rack driven power assistance steering apparatus which can transmit a precise steering assistance force to the ball nut.
본 발명은 외주면에 외주스크류홈이 형성되어 있는 랙바, 내주면에 외주스크류홈과 대응되는 내주스크류홈을 구비하고 외주면 일측에 베어링이 결합되어 있는 볼너트, 외주면에 벨트결합부가 구비되고 내주면 일측단에는 볼너트의 타측 외주면에 결합되어 베어링을 지지하는 결합단부가 구비되고 내주면 타측단에는 결합단부에서 단턱지며 내경이 확대 형성되는 확경부가 구비되어 있는 너트풀리를 포함하는 랙구동형 동력 보조 조향장치를 제공한다.
Rack Assist Type Power Steering Apparatus
랙구동형 동력 보조 조향장치
2023-05-26
Patent
Electronic Resource
Korean