Provided is a structure of a worm shaft for a motor driven power steering system, which comprises: a worm shaft provided with a gear portion that is geared to a worm wheel on an outer circumference thereof; a ball bearing disposed at the end of the worm shaft; a bearing holder in which a hollow is formed to be coupled to surround an external side of the ball bearing, and an accommodation hole is perforated to accommodate a ball member on an outer circumferential surface; an elastic member coupled to surround an outer circumference of the bearing holder to tighten the ball member; and a damping means configured to absorb a shock by interfering with movement of the ball bearing when the worm shaft is axially displaced.

    외주면에 웜휠과 기어 맞물림 결합되는 기어부가 마련된 웜샤프트, 상기 웜샤프트의 단부에 배치되는 볼베어링, 중공이 형성되어 상기 볼베어링의 외측을 감싸도록 결합되고 외주면에 볼부재의 수용이 가능하도록 수용공이 천공되는 베어링 홀더, 상기 베어링 홀더의 외주면 둘레를 감싸도록 결합되어 상기 볼부재를 결속시키기 위한 탄성부재 및 상기 웜샤프트의 축방향 변위시 상기 볼베어링의 이동과 간섭되어 완충시키는 댐핑수단이 구비된 전동식 조향 시스템의 웜샤프트 구조체를 제공한다.


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    Title :

    Structure of worm shaft for motor driven power steering system


    Additional title:

    전동식 조향 시스템의 웜샤프트 구조체


    Contributors:

    Publication date :

    2019-12-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

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



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