| 摘要 |
An electric bicycle is formed by user-manipulatively mounting a power driving assembly to a regular bicycle. The power driving assembly includes a driving gear, a flat motor, a battery set, an operation knob, and a transmission gear train. The driving gear is mounted to spokes of a bicycle wheel and is concentric with respect to an axle of the wheel. The flat motor is mounted to a frame of the wheel. The battery set is received in a casing, which is mounted to a frame of the bicycle and the operation knob is mounted on a handlebar of the bicycle or other suitable locations to control a switch of the flat motor, which transmits the power generated by the flat motor through the transmission gear train to drive the driving gear and thus controlling forwarding and stopping of the bicycle wheel, thereby realizing the operation and function of the electric bicycle.
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