According to the present invention, disclosed is a motor-driven power steering apparatus. The motor-driven power steering apparatus of the present invention includes: a rack housing installed in a car body; a screw rack rotationally installed inside the rack housing, and having a spiral screw groove portion formed thereon on an external lateral surface; a ball nut into which the screw rack is inserted, having a circulation groove portion to correspond to the screw groove portion, and having a plurality of rolling balls installed to be movable in the circulation groove portion; a bearing portion installed to surround the external side of the ball nut, and supported by the rack housing; and a tilting protruding portion supporting the external lateral surface of the bearing portion such that the bearing portion can be installed to be tiltable. Thus, even if an installment tolerance of a rack housing is made, the present invention can prevent rolling balls from being caught between a screw rack and a ball nut, or prevent damage to the rolling balls.

    전동식 조향장치에 대한 발명이 개시된다. 본 발명의 전동식 조향장치는: 차체에 설치되는 랙 하우징; 랙 하우징의 내부에 회전 가능하게 설치되고, 외측면에 나선형의 스크류홈부가 형성되는 스크류 랙; 스크류 랙이 삽입되고, 스크류홈부에 대응되도록 순환홈부가 형성되고, 순환홈부에 복수의 구름볼이 유동 가능하게 설치되는 볼 너트; 볼 너트의 외측을 둘러싸도록 설치되고, 랙 하우징에 의해 지지되는 베어링부; 및 베어링부가 틸팅 가능하게 설치되도록 베어링부의 외측면을 지지하는 틸팅 돌기부를 포함하는 것을 특징으로 한다.


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    Title :

    MOTOR DRIVEN POWER STEERING APPARATUS


    Additional title:

    전동식 조향장치


    Contributors:

    Publication date :

    2017-03-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge / F16H Getriebe , GEARING



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