The present invention relates to a power transmission device for an electric bike. The power transmission device for an electric bike comprises: a drive motor which has a through hole where a pedal shaft penetrates and is fixed to a case; an eccentric cam of which one end is connected to the rotary shaft of the drive motor in an axial direction to receive power; a circular planetary gear which is coupled to the outer surface of the other end of the eccentric cam with a first bearing therebetween; a ring gear of which the inner surface is engaged with the circumference of the planetary gear and which is fixed to the case; a carrier of which one end is coupled to the planetary gear in an axial direction; and a drive shaft which is coupled to the outer surface of the pedal shaft with a first direction clutch therebetween and is coupled to the inner surface of the other end of the carrier in an axial direction with a second direction clutch therebetween. Therefore, the present invention simplifies the structure of the power transmission device by simplifying the structure of a reducer.

    본 발명은 전기 자전거의 동력전달장치에 관한 것으로서, 페달축이 관통되도록 관통구를 갖고 케이스에 고정되는 구동모터; 축방향으로 일단이 상기 구동모터의 회전축과 연결되어 동력을 전달받는 편심캠; 축방향으로 상기 편심캠의 타단의 외측면에 제1 베어링을 사이에 두고 결합되는 원형의 유성기어; 상기 유성기어의 원주과 내주면이 치합되고 상기 케이스에 고정되는 링기어; 축방향으로 일단이 상기 유성기어에 결합되는 캐리어; 및 상기 페달축의 외측면에 제1 일방향클러치를 사이에 두고 결합되고, 축방향으로 상기 캐리어의 타단의 내측면에 제2 일방향클러치를 사이에 두고 결합되는 구동축;을 포함한다.


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    Title :

    DRIVING TRANSMISSION UNIT OF ELETRICITY BIKE


    Additional title:

    전기 자전거의 동력전달장치


    Contributors:
    YUN TAE HO (author) / PARK NO GILL (author) / OH MYUNG GUN (author) / BAEK GYEANG MYEANG (author) / KIM JEONG SU (author) / KIM TAE WON (author) / JANG SU BONG (author) / HA KEUN SOO (author) / PARK YUN YEONG (author)

    Publication date :

    2016-04-18


    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 / F16H Getriebe , GEARING



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