The present invention relates to a gearless pulley of a bicycle, including: a rotary shaft; an axial plate fixedly mounted on the rotary shaft; a movable disk installed to be movable forward and backward with respect to the rotary shaft while passing through the rotary shaft; a ring pulley which is rotatably installed on an outer periphery of the movable disk and into which a power transmission belt is fitted; and a pulley varying means for moving the movable disk while transmitting rotational force between the axial plate and the ring pulley. According to the present invention, there is a technical advantage that a smooth automatic transmission and an efficient power transmission are possible, and a structure thereof is simple and easy to manufacture.
본 발명은 자전거 무단변속용 풀리장치에 관한 것으로서, 회전축과, 상기 회전축에 고정 설치되는 축원판과, 상기 회전축에 관통되면서 회전축에 대해 전후진 위치이동 가능하게 설치되는 가동원판과, 상기 가동원판의 외주에 회전 가능하게 설치되며, 동력전달용 벨트가 끼워지는 링풀리와, 상기 축원판과 링풀리 상호간에 회전력을 전달하면서 상기 가동원판을 위치이동시키는 풀리가변수단을 포함한다. 이러한 본 발명에 따르면, 원활한 자동변속과 효율적인 동력전달이 가능하면서 구조가 간단하여 제조 또한 용이한 기술적 장점이 있다.
Pulley device for Gearless transmission of bicycle
자전거 무단변속용 풀리장치
2017-04-20
Patent
Electronic Resource
Korean
Rreciprocating motion type device for Gearless transmission of bicycle
European Patent Office | 2024
|Rreciprocating motion type device for Gearless transmission of bicycle
European Patent Office | 2024
|