The efficient stepless speed change bicycle comprises a bicycle frame, a front axle, a rear axle, a middle axle, a saddle and a handlebar are arranged on the bicycle frame, a front wheel is arranged on the front axle, a rear wheel and double flywheels are arranged on the rear axle, and crank pedals and a speed change lever are arranged on the middle axle. A speed change screw rod is arranged in the speed change lever, a manual speed change rocking handle is arranged at the top end of the speed change screw rod, a speed change screw sliding block is arranged on the speed change screw rod to adjust torque, the speed change screw sliding block drives a transmission chain connected to a push-pull rod, the transmission chain is hung on double flywheels of a rear shaft in a pulling mode and then retracts and is connected to a chain collecting rope, and the chain collecting rope tensions the transmission chain. And the limiting pin is fixed on the frame so as to limit the maximum rotation angle of the speed change lever. The invention has the advantages of high efficiency, labor saving, stepless speed change, simple structure, low processing technical requirements and low cost. Existing equipment and resources are fully utilized, rapid mass production can be achieved, and the method is suitable for shared bicycle upgrading.
本发明公开一种高效无级变速自行车,它包括车架,车架上设有前轴、后轴、中轴、车座、车把,前轴上设有前轮,后轴上设有后轮和双飞轮,中轴上设有曲柄脚蹬和变速杠杆。变速杠杆里设有变速螺杆,变速螺杆顶端设有手动变速摇柄,变速螺杆上设有变速螺丝滑块调节力矩,变速螺丝滑块带动推拉杆上连接的传动链条,传动链条拉挂到后轴的双飞轮上再折返并接到收链绳上,收链绳拉紧传动链条。限位销固定在车架上以限定变速杠杆的最大旋转角度。本发明高效省力可无级变速、结构简单、加工技术要求和成本低。充分利用现有设备和资源,可快速量产,适用共享单车升级。
Efficient stepless speed change bicycle
高效无级变速自行车
2024-01-05
Patent
Electronic Resource
Chinese
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |
Stepless speed change device, transmission device and bicycle
European Patent Office | 2023
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