| 摘要 |
PURPOSE: A bicycle with a pedal unit for increasing driving force is provided to effectively transfer driving force by locating the trace of wheels at the front of the center of a driving sprocket. CONSTITUTION: A bicycle with a pedal unit for increasing driving force comprises a pedal unit. The pedal unit comprises fixed frames(20), connection members(50), auxiliary arms, and crank arms(70). The fixed frames are arranged in both sides of a driving sprocket. Pedals are rotatably connected to one side of the connection members. One ends of the auxiliary arms are connected to the fixed frames, and the other ends are connected to the other side of the connection members. One ends of the crank arms are connected to the center of the driving sprocket to rotate the driving sprocket. |
