Folding type crank arm assembly for bicycle

摘要

The present invention relates to a folding bicycle crank arm assembly. In the present invention, once the fastening for the pedal 34 drives the sprocket crank arm 30 which is installed 53 were to be rotated, or in part. That is, the drive sprocket 53 and the other end of the crank arm 30 with respect to a mounting plate 50 mounted to the rotatable fastening to the crank arm 30 and the mounting plate (50) mechanism ( Using the 40) were to be signed, or signed off. The fastening mechanism 40 is rotated about the lever pin 44 to the lever 42 and the lever 42 is provided with a cam (43) to vary the distance from the rotation center of the outer surface and the mounting plate (50 ) of the jaw includes a hook (45 ') having a hook (45) which is walking on a hanger pin 66. In storage or during transportation of the bicycle pedal according to this invention such 34 has the advantage that the space required for storage and transport can be minimized to prevent the outward projection, has an advantage Good durability of the fastening mechanism (40) .