The invention provides a power transmission mechanism of a bicycle without a center shaft, which comprises a frame (1) and is characterized in that a ring shaft (9) is arranged at the position of the center shaft of the frame, a chain wheel (6) is mounted on the ring shaft, a left crank (7) and a right crank (7) are arranged on the ring shaft, and pedals (8) are respectively mounted at the other ends of the left crank (7) and the right crank (7). The center line of the left pedal (8), the radial perpendicular line (10) of the circle center of the ring shaft (9) and the center line of the right pedal (8) are located on the same straight line. And the center line of the left crank (7), the radial vertical line (10) of the circle center of the ring shaft and the center line of the right crank (7) are parallel to one another. The invention has the advantages that the structure is simpler, installation and debugging can be completed without a professional middle axle assembly tool, the problem of upper and lower dead points is thoroughly solved, potential safety hazards are reduced, and healthy riding becomes easier, safer and more efficient.
本发明提供无中轴自行车动力传动机构,包含有车架(1),其特征在于:在车架中轴位置设有环轴(9),环轴上安装有牙盘(6),环轴上设置有左右两个曲柄(7),左右两个曲柄(7)另一端各自安装有脚踏板(8)。左侧脚踏板(8)中心线、环轴(9)圆心径向垂直线(10)、右侧脚踏板(8)中心线处在同一直线上。左曲柄(7)中心线、环轴圆心径向垂直线(10)、右曲柄(7)中心线相互平行。本发明的优点在于结构更加简单,不需要专业中轴装配工具,即可完成安装调试,并彻底解决了上下死点的难题,减少了安全隐患,使健康骑行变得更加轻松、安全高效。
Power transmission mechanism of bicycle without center shaft
一种无中轴自行车动力传动机构
2024-03-29
Patent
Electronic Resource
Chinese
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |
Gear shaft transmission assembly, bicycle driving mechanism and bicycle thereof
European Patent Office | 2020
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