ELECTRIC BOOSTER FOR VEHICLE

The present invention relates to an electric booster for a vehicle, comprising: a housing; a screw bolt installed in the housing; a screw nut screw-coupled to the screw bolt; a bushing unit connected to an output shaft of a motor; an input gear unit having a gear tooth unit in which gear teeth are f...

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1. Verfasser: YUN CHUN SIC
Format: Patent
Sprache:eng ; kor
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Zusammenfassung:The present invention relates to an electric booster for a vehicle, comprising: a housing; a screw bolt installed in the housing; a screw nut screw-coupled to the screw bolt; a bushing unit connected to an output shaft of a motor; an input gear unit having a gear tooth unit in which gear teeth are formed of a different material; a speed reducing gear unit engaged with the input gear unit and increasing the rotating force of the input gear unit to transfer the rotating force to a screw nut; and a piston pressed by the screw bolt to move and forming hydraulic pressure in the housing. The present invention can prevent a slip caused by a difference between the thermal expansion coefficients of an output shaft and a gear member and accordingly can prevent reduction in performance of the electric booster. 본 발명은 차량용 전동부스터에 관한 것으로, 하우징과, 하우징의 내부에 설치되는 스크류볼트와, 스크류볼트와 나사결합되는 스크류너트와, 모터의 출력축과 연결되는 부쉬부와, 기어치가 형성된 기어치부가 서로 다른 소재로 형성되는 입력기어부와, 입력기어부와 치합되고, 입력기어부의 회전력을 증가시켜 스크류너트로 전달하는 감속기어부와, 스크류볼트에 가압되어 이동되며 하우징의 내부에 유압을 형성하는 피스톤을 포함하는 것을 특징으로 한다.