Patent ID: 9027691
Filing Date: 2015-05-12
Classification: B62M

Abstract:
1. A driving unit for use in an electric assist bicycle, the driving unit comprising: a housing; a crankshaft extending through the housing; a magnetostrictive torque detection device located in the housing to detect a torque generated in the crankshaft; a rotating member including the magnetostrictive torque detection device, and positioned to be concentric with the crankshaft and rotatable together with the crankshaft; and a magnetic rotation detection device located in the housing to detect rotation of the crankshaft; wherein the rotating member includes: the magnetic rotation detection device includes: the detected portion is provided at a position different from that of the torque detection device in an axial direction of the crankshaft; the driving unit includes a support having the detector mounted thereon; and the support and the detector are located completely inside the housing.