Patent ID: 6196347
Filing Date: 2001-03-06
Classification: B62M,G01L

Abstract:
A power transmission system for an electric motor having a rotor and a stator, comprising:a casing,a crankshaft adapted for attachment to pedals and extending through the casing,a hollow axle mounted around the crankshaft and including a first end in the casing and a second end extending beyond the casing and adapted to be securely connected to a chain wheel to rotate therewith,a motor hollow shaft mounted around the hollow axle, the crankshaft, the hollow axle and the motor hollow shaft being concentrically arranged in sequence, wherein the rotor is adapted to be mounted around an end of the motor hollow shaft and the stator is adapted to be fixed to an inner periphery of the casing,a gear reduction train mounted to the end of the motor hollow shaft, anda power combination mechanism for combining pedaling power from the crankshaft and power from the electric motor at the hollow axle to thereby drive the chain wheel.