| 摘要 |
Provided is a crank arm for a foldable bicycle capable of folding inward a pedal which is rotationally mounted at one end of the crank arm by a simple rotation of the crank arm such that the pedal does not outwardly protrude when the foldable bicycle is folded by improving the inner structure of the crank arm fixedly mounted at both ends of a bicycle crank shaft. An end of an upper arm of the crank arm for the foldable bicycle, disposed between the crankshaft and the pedal of the foldable bicycle, is fixedly mounted at one end of the crankshaft of the foldable bicycle, and a lower arm is integrally coupled to the other end of the upper arm such that the lower arm is rotatable. Also, a hollow lock cover disposed between a radial outer face of the upper arm and a radial outer face of the lower arm intermittently controls rotation of the lower arm with respect to the upper arm. |
