The invention relates to a bicycle flexible crank component which comprises a swing rod, a compression spring, a cable hook, a torsion spring, a crank and a pin shaft, the lower end of the crank is connected with a bicycle middle shaft, the swing rod is arranged on the rear side of the crank, one end of the swing rod is hinged to the middle of the crank through the pin shaft, and the other end of the swing rod is fixedly connected with a pedal. The two arms of the pressure spring abut against the inner side of the swing rod and the inner side of the crank respectively, the two ends of the pressure spring are arranged at the position, close to the pedal, of the swing rod and a spring seat at the upper end of the crank in a sleeved mode, and the swing rod and the crank are connected together through a cable hook fixed to the swing rod. The pedal can be easily pushed over the top dead center, the driving moment can be increased by increasing the driving force arm, the riding is easy and labor-saving, and the structures of the crank components on the two sides are the same.
本发明涉及一种自行车柔性曲柄部件,包括:摆杆、压簧、揽钩、扭簧、曲柄、销轴,曲柄下端连接自行车中轴,摆杆设置在曲柄的后侧,摆杆的一端用销轴铰接在曲柄的中部,另一端固定连接脚踏板,扭簧套装在销轴上,其两臂分别抵住摆杆和曲柄的内侧,压簧的两端套装在摆杆的接近脚踏板处和曲柄上端的弹簧座上,固定在摆杆上的揽钩把摆杆和曲柄揽在一起,自行车上坡骑行时,脚踏板与曲柄之间设置的弹簧在上止点附近起作用被压缩呈柔性推动,脚踏板就容易被推越上止点,且能增大驱动力臂使驱动力矩增大,使骑行轻松省力,两侧曲柄部件的结构相同。
Bicycle flexible crank component
自行车柔性曲柄部件
2023-06-30
Patent
Electronic Resource
Chinese
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |
Bicycle flexible crank structure with compensation function
European Patent Office | 2024
|European Patent Office | 2016
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