| 摘要 |
PROBLEM TO BE SOLVED: To provide a driving device for an electric bicycle capable of facilitating manufacture by simplifying a structure of a unidirectional clutch of a personally driven system.SOLUTION: A driving device for an electric bicycle comprises a pedal crank shaft 12 to which a pedal 12a is connected; a chain sprocket 14 which is positioned on the same axis as the pedal crank shaft 12 and is wound with a chain 5 for driving a rear wheel; and a unidirectional clutch 13 for a personally driven system interposed on a power transmission system between the pedal crank shaft 12 and the chain sprocket 14. The unidirectional clutch 13 comprises an inner part 43 and an outer part 45. The inner part 43 of the unidirectional clutch 13 is connected to the chain sprocket 14. The outer part 45 of the unidirectional clutch 13 is connected to the pedal crank shaft 12. |
