A bicycle labor-saving crank is characterized in that a base arm is located on the outer side of a large disc, one end of the base arm is combined with the large disc, and the base arm synchronously rotates along with the large disc; the base chain wheel is fixed to the base arm and faces the large disc. The outer chain wheel is rotationally connected to the other end of the base arm through an outer axis; the conveying component is rotationally connected to the base chain wheel and the outer chain wheel; one end of the outer arm is rotationally connected to the outer axis and synchronously rotated with the outer chain wheel, and the other end of the outer arm is rotationally connected with the pedal. The length of the outer arm is additionally increased, so that the length of the arm of force is increased in treading, and the effect of saving labor is achieved.
一种自行车省力曲柄,包括:基臂位于大盘外侧并一端结合于大盘,基臂一同随大盘同步旋转;基链轮固定于基臂并面向大盘方向;外链轮以外轴心转动连结于基臂的另一端;传送构件被转动连接于基链轮与外链轮;及外臂其一端转动连结于外轴心并与外链轮同步被旋转,外臂的另一端被踏板转动连接。透过外臂成为额外增加的长度尺寸,对于踩踏上成为增加力臂长度,达到省力的效用。
Labor-saving crank of bicycle
自行车省力曲柄
11.04.2025
Patent
Elektronische Ressource
Chinesisch
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |
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