The invention discloses a bicycle three-stage transmission and a bicycle, and relates to the technical field of bicycles, the bicycle three-stage transmission comprises a speed regulator arranged on a handlebar and a speed change piece arranged on a bicycle body, and the speed regulator is connected with the speed change piece through a speed change line; the three-level transmission comprises a gear shifting disc, a low-speed chain disc, a medium-speed chain disc, a high-speed chain disc and a crank which are sequentially combined in sequence, the low-speed chain disc is fixedly connected with the crank, the medium-speed chain disc and the high-speed chain disc are connected with the crank through bearings, the low-speed chain disc, the medium-speed chain disc and the high-speed chain disc are respectively and independently connected with chains, and a linkage mechanism is arranged on the crank. And a gear shifting mechanism is arranged on the gear shifting disc. The low-speed chain disc, the medium-speed chain disc and the high-speed chain disc are connected with the chains and the gear shifting disc to drive the chains and the gear shifting disc to control gear shifting, gear shifting is stable and easy, no dead angle exists in 360 degrees, the situation that the chains are shifted to be disengaged is avoided, internal parts are all achieved through mechanical structures, no electronic device is involved, and the production and manufacturing cost is low.
本发明公开了一种自行车三级变速器及自行车,涉及自行车技术领域,包括设于车把手上的调速器和车体上的变速片,调速器与变速片通过变速线连接,包括三级变速器,三级变速器包括按次序依次组合的变档盘、低速链盘、中速链盘、高速链盘和曲柄,低速链盘与曲柄固定连接,中速链盘、高速链盘与曲柄通过轴承连接,低速链盘、中速链盘和高速链盘分别单独连接有链条,曲柄上设有联动机构,变档盘上设有变档机构。本发明通过低速链盘、中速链盘、高速链盘分别连接带动各自的链条,变档盘来控制档位的切换,变档平稳轻松360度无死角,不会拨动链条发生脱链的情况,且内部零件皆是通过机械结构实现,不涉及任何电子器件,生产制造成本低。
Bicycle three-stage transmission and bicycle
一种自行车三级变速器及自行车
2023-08-15
Patent
Electronic Resource
Chinese
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |