Electrical auxiliary drive for bicycle, comprises electric motor with output shaft, and rechargeable energy source connected with electric motor, where driving device is provided for transmitting torque from output shaft to foot pedal shaft

摘要

The electrical auxiliary drive comprises an electric motor (3) with an output shaft (31), and a rechargeable energy source (4) connected with the electric motor. A driving device (5) is provided for transmitting torque from the output shaft to a foot pedal shaft (32) of a bicycle (1). A fastening device (6) is provided for fastening the electric motor at a pipe (9), particularly lower tube of the bicycle. A control unit (7) is provided for operating the electric motor. An independent claim is also included for a bicycle with a rechargeable energy source arranged in the lower area between a seat tube and a lower tube.