The present invention relates to a motor-driven power steering device. According to the present invention, the motor-driven power steering device comprises: a housing; a screw rack bar which is installed to be linearly movable in the housing and has a ball screw on the outer peripheral surface; a driven means which moves the screw rack bar; a ball nut unit on which the screw rack bar is coupled to allow rotation; a bearing which is fixed to the housing and supports the screw rack bar; a lock nut which is fastened to the housing and presses the bearing to be in contact with the housing; and a first elastic ring which is installed to be in contact between the bearing and the ball nut unit and elastically deforms when tilting the screw rack bar. Accordingly, the present invention compensates for a clearance generated in the driven means or the like.

    전동식 동력 조향장치에 관한 발명이 개시된다. 본 발명에 따른 전동식 동력 조향장치는: 하우징; 하우징에 직선운동 가능하게 설치되고, 외주면에 볼스크류가 형성되는 스크류 랙바; 스크류 랙바를 이동시키는 종동수단; 스크류 랙바가 회전 가능하게 결합되는 볼너트부; 하우징에 고정되고, 스크류 랙바를 지지하는 베어링; 하우징에 체결되고, 베어링을 하우징에 밀착되게 가압하는 락너트; 및 베어링과 볼너트부 사이에 접촉되게 설치되고, 스크류 랙바의 틸팅시 탄성 변형되는 제1탄성링;을 포함하는 것을 특징으로 한다.


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    Title :

    MOTOR-DRIVEN POWER STEERING


    Additional title:

    전동식 동력 조향장치


    Contributors:

    Publication date :

    2016-03-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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