FOLDING TYPE CRANK ARM ASSEMBLY FOR BICYCLE

摘要

The present invention relates to a folding crank arm assembly for a bicycle. In the present invention, the crank arm 30 having the pedal 34 at one end thereof is fastened or rotated with respect to the driving sprocket 53. That is, the other end of the crank arm 30 is rotatable with respect to the mounting plate 50 mounted on the driving sprocket 53, and the crank arm 30 and the mounting plate 50 are fastened by a fastening mechanism ( 40) to be fastened or unfastened. The fastening mechanism 40 is rotated about the lever 42 having a cam portion 43 with a distance from the center of rotation to the outer surface and the lever pin 44 with respect to the lever 42 and the mounting plate 50. And a hook 45 having a hooking jaw 45 'hooked on the hooking pin 66 of. According to the present invention, it is possible to prevent the pedal 34 from protruding outward when the bicycle is stored or transported, thereby minimizing the space required for storage or transport, and also improving the durability of the fastening mechanism 40. .;Bicycle, Pedal, Crank Arm, Folding