The present invention relates to a transmission for a bicycle. The transmission for a bicycle comprises: multiple screw-type rotation members which are formed in the circumferential direction of a first hub coupled to a shaft connected to pedals and of which the lengths are contracted or expanded to the inner and outer sides in a radial direction through screw-type rotation structures; connecting members which are coupled to the screw-type rotation members and the gear of a rear wheel of a bicycle in a closed loop state; and a rotating module which is formed to be approached or spaced to/from the screw-type rotation members and rotates the screw-type rotation members. Therefore, the present invention simplifies the structure thereof by controlling the shift ratio through the screw-type rotation structures.

    본 발명은 자전거용 변속기에 관한 것으로서, 페달과 연결되는 축에 결합되는 제1 허브의 둘레 방향을 따라 마련되며,나사식 회전구조를 통해 반경 방향 내외측으로 그 길이가 축소 또는 확장되는 다수의 나사식 회전부재; 상기 다수의 나사식 회전부재와 자전거 뒷바퀴의 뒷바퀴 기어에 폐루프 형태로 결합되는 연결부재; 및 상기 나사식 회전부재에 접근 또는 이격되게 마련되며,상기 나사식 회전부재를 회전구동시키는 회전 구동 모듈을 포함한다.


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    Title :

    TRANSMISSION FOR BICYCLES


    Additional title:

    자전거용 변속기


    Contributors:
    SO YOUN SEO (author)

    Publication date :

    2016-07-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    F16H Getriebe , GEARING / B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer



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