| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive drive device capable of reducing designing and manufacturing steps, and acquiring a favorable measurement result.SOLUTION: An output shaft 2 with a bearing 25 is provided to transmit torque to a wheel of an electric bicycle so that a first supporting force 100 in a first direction acts on the bearing 25. An input shaft 3 is provided, and the torque generated by an electric motor 30 acts on the input shaft 3 to be transmitted from the input shaft 3 to the output shaft 2 so that a second supporting force 200 in a second direction acts on the bearing 25. A crankshaft 4 is provided, and the torque generated by a rider acts on the crankshaft 4 to be transmitted from the crankshaft 4 to the output shaft 2 so that a third supporting force 300 in a third direction acts on the bearing 25. A supporting sensor 26 is provided to measure the third supporting force 300 acting on the bearing 25. |
