| 摘要 |
A torque sensor assembly for a power-assisted bicycle has a torque sensor, a one-way bearing, a chainwheel, two cranks and two pedals. The torque sensor has an envelope tube, a middle tube, a transmission axle, a resilient element connected to the middle tube and the transmission axle, a first disc and a second disc respectively attached to the transmission axle and the middle tube, and a detection unit detecting displacement angles of the second disc and the first disc to calculate torques applied to the transmission axle and to drive the power-assisted bicycle according to the torque. The torque sensor assembly has a simple structure, fast, sensitive and accurate torque sensing ability, and can easily be assembled to all kinds of power-assisted bicycles.
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