The present invention relates to a drive apparatus for a bicycle, which can be combined and separated without a specific tool so as not to use the specific tool in a process of engaging and disengaging a crank arm and a sprocket, and capable of reducing maintenance, repair and replacement costs, comprising: a crank arm rotationally coupled to a bicycle frame and rotated by receiving power of a driver; a main rotary disk member coaxially coupled to the crank arm and rotated together with the crank arm; a main sprocket rotationally coupled to the inner surface of the main rotary disk member and configured to rotate together with the main rotary disk member; and a driven sprocket rotationally receiving rotational force of the main sprocket via a chain.

    본 발명은 크랭크암과 주동스프로킷의 결합 및 분리 과정에서 특정공구를 사용하지 않도록 특정공구가 없어도 결합 및 분리가 가능하고, 유지, 보수 및 교체 비용을 낮출 수 있도록 설계된 자전거용 구동장치에 관한 것으로, 자전거 프레임에 회전 가능하게 결합되고, 운전자의 답력을 전달받아 회전하는 크랭크암과, 상기 크랭크암에 동축으로 결합되어 상기 크랭크암과 함께 회전하는 주동회전원판부재와, 상기 주동회전원판부재의 내측면에 방사상으로 결합되어 복수의 주동조각스프로킷으로 구성되고, 상기 주동회전원판부재와 함께 회전하는 주동스프로킷과, 체인을 매개로 상기 주동스프로킷의 회전력을 전달받아 회전하는 종동스프로킷을 포함하여 이루어진다.


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    Title :

    APPARATUS FOR DRIVING BICYCLE


    Additional title:

    자전거용 구동장치


    Contributors:

    Publication date :

    2018-09-06


    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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