The present invention provides a transmission device for an electric bicycle, including: a shaft; a front hub portion coupled to an outer circumferential surface of one side of the shaft; a spike portion having at least one which is coupled to the front hub portion in a rotation direction of the shaft, and which is radially distant or close in a radial direction of the shaft; a first variable drive pulley portion straightly reciprocating along the shaft and having a sloped surface formed on a side opposite to the front hub portion, wherein the sloped surface has a guide groove formed therein where one end portion of the spike portion is slidable while being in contact therewith; and a first driven pulley portion belt-coupled to the spike portion and varying a rotational speed of the first variable drive pulley portion.

    샤프트; 상기 샤프트의 일측 외주면에 결합되는 프런트허브부; 상기 프런트허브부에 상기 샤프트의 회전 방향을 따라 적어도 하나 이상 결합되며 상기 샤프트의 반경 방향으로 멀어지거나 가까워지는 스파이크부; 상기 샤프트를 따라 왕복 직선 이동하며, 상기 프런트허브부와 마주보는 측에 경사면이 형성되고, 상기 경사면에는 상기 스파이크부의 일단부가 접촉 상태를 유지하면서 슬라이딩되는 가이드홈이 형성되는 제1가변구동풀리부; 및 상기 스파이크부와 벨트 결합되어 상기 제1가변구동풀리부의 회전 속도를 가변시키는 제1종동풀리부;를 포함하는 전기 자전거용 변속장치를 제공한다.


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    Title :

    TRANSMISSION OF ELECTRIC BYCICLE


    Additional title:

    전기 자전거용 변속장치


    Contributors:
    LIM JI HYUN (author) / KIM BYUNG JO (author)

    Publication date :

    2017-11-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer



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