| 摘要 |
PROBLEM TO BE SOLVED: To provide a pedaling force detecting device capable of detecting torque in an excellent state while reducing the number of parts and having an easy and small-sized structure. SOLUTION: One end of a crankshaft 23 is rotatably journaled by a bearing 51. A cylindrical torsion bar 53 is penetrated and inserted into the outer periphery of the crankshaft 23, the one end is spline-coupled with the outer peripheral surface of the crankshaft 23 in the vicinity of the bearing 51, and the other end is rotatably journaled by a bearing 52. A pedal sprocket 25 is meshed with the outer peripheral surface on the other end side of the torsion bar 53. A pair of magnet rings 55 are mounted along a circumferential direction on external surfaces in the vicinity of the one end side and in the vicinity of the other end side of the torsion bar 53. A pair of MR sensors 501 are arranged at positions facing the magnet rings 55. COPYRIGHT: (C)2004,JPO |
