Drive device for bicycle, has free-wheel arranged between foot pedal arrangement and hollow shaft and provided for coupling pedal arrangement with hollow shaft, where freewheel is arranged radially outside of hollow shaft

摘要

The device (1) has a drive wheel (2) connected with a wheel of a bicycle. A hollow shaft (3) is connected with the drive wheel, and an electric motor (4) is connected with the hollow shaft for transmitting torque. A foot pedal arrangement (10) has foot pedals (5, 6) and a shaft (7), where the pedals are connected with one another. A free-wheel (8) is arranged between the arrangement and the hollow shaft, and couples the arrangement with the hollow shaft when the arrangement rotates faster than the hollow shaft, where the free-wheel is arranged radially outside of the hollow shaft.