| 摘要 |
PURPOSE: A device for controlling the position of a crank arm of a bicycle is provided to reduce the size of a bicycle by easily controlling the position of a crank arm when the bicycle is folded. CONSTITUTION: A device for controlling the position of a crank arm of a bicycle comprises a stay crank arm(11), a crank arm(12), a locking device(14), and a spring clip. The stay crank arm is connected to a crank shaft of a bicycle and is rotated. Multiple position control holes(16) are formed in the stay crank arm. One end of the crank arm is coupled to the stay crank arm, and the other end is connected to a pedal of the bicycle. The locking device is inserted in to the position control holes. The spring clip prevents the crank arm from being separated from the stay crank arm. |
