Patent ID: 7766114

Claim:
A driving mechanism for a motorized bicycle, whose driving mechanism is installed in a frame manifold node thereof, mainly comprises a motor driving transmission device, a front driving sprocket and a pedal driving transmission device, wherein, Said motor driving transmission device, which is disposed on the frame manifold node, inwardly includes a motor shell, a magnet stator, an electromagnetic wire-coiled rotor and a cylindrical hollow rotatable shaft orderly; Said front driving sprocket has a transmission rotatable sleeve disposed therein for inserting the hollow rotatable shaft such that a ring-shaped first single-direction irreversible transmission device can be annularly sandwiched in between in concentric manner; Said pedal driving transmission device comprises a pair of pedal cranks and a pedal driving shaft pedal crank, which runs through the transmission rotatable sleeve and hollow rotatable shaft, such that a ring-shaped second single-direction irreversible transmission device can be annularly sandwiched in between in concentric manner; and Additionally, both of the first and second single-direction irreversible transmission devices are arranged in counter manner with synergistic action so that either of motor driving transmission device or pedal driving transmission device can drive the transmission rotatable sleeve and front driving sprocket in same proper rotational direction.