A bike is considered as an alternative means of coping with an energy crisis beyond a means for health, leisure, or resolving traffic congestion. Specifically, an electric bike overcoming a limit given to a typical bike, such as wind, an uphill road, a long distance or the like, is expected as a future eco-traffic means. The present invention provides an electric bike as a multi-stage gear bike having a structure where the structure of a multi-stage gear bike is combined with the structure of a sun gear set. The structure of the multi-stage gear bike uses a rear wheel sprocket including several chainrings and several cogs. The structure of the sun gear set, including a sun gear, planet gears connected by a carrier to simultaneously perform revolution and rotation, and a ring gear, is typically and often used to obtain big deceleration force. In the present invention, a housing is used to allow the planet gears to perform only rotation in order to reduce a loss of force due to a revolution of the planet gears. As such, the present invention is an electric, multi-stage gear bike, which is formed by a geared bike and the sun gear set having the planet gears that do not revolve.

    자전거는 단순히 건강과 여가, 교통문제 해결 수단을 넘어 에너지 위기의 대안으로 여겨지고 있다. 특히 바람, 오르막길, 장거리 등 일반 자전거가 받는 제약에서 벗어난 전기자전거는 미래의 친환경 교통수단으로 기대를 모으고 있다. 본 발명은 여러개의 체인링과 여러장의 코그로 구성된 뒷바퀴스프라켓을 이용한 다단기어자전거의 구조와 일반적으로 큰 감속력을 얻기위해 많이 사용되는 태양기어와 캐리어로 연결되어 공전과 자전을 동시에 하는 유성기어와 링기어로 형성된 태양기어세트의 구조를 병행하였지만 유성기어의 공전으로 인한 힘의 손실을 줄이기 위해 유성기어가 자전만 하도록 하우징을 사용하여 기어자전거와 공전하지않는 유성기어를 가진 태양기어세트로 만들어진 다단기어자전거인 동시에 전기자전거가 되도록 하였다.


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    Title :

    multi stage gear electric bike


    Additional title:

    다단기어 전기자전거


    Contributors:

    Publication date :

    2017-01-18


    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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