Patent ID: 9663186
Date: 2017-05-30
CPC Classifications: B62M,F16H,G01L

Claim:
1. A mid-motor drive system for an electric bicycle, comprising a left shell ( 1 ), a right shell ( 2 ), a motor assembly ( 3 ), a gear reduction apparatus ( 4 ), a torque sensor ( 5 ), a central shaft ( 7 ), a controller ( 8 ), and a crankset ( 9 ), and further comprising a planetary gear increase apparatus ( 6 ), wherein the gear reduction apparatus ( 4 ) is connected to the motor assembly ( 3 ), the planetary gear increase apparatus ( 6 ), and the crankset ( 9 ), the planetary gear increase apparatus ( 6 ) is connected to the torque sensor ( 5 ) and the central shaft ( 7 ), the torque sensor ( 5 ) is connected to the controller ( 8 ), and the controller ( 8 ) is connected to the motor assembly ( 3 ), the torque sensor ( 5 ) comprises a deformation support, a signal transmission module ( 502 ), and a magnetic component, the deformation support is deformed under a force to actuate the magnetic component to move, and the signal transmission module ( 502 ) senses the movement of the magnetic component, converts a change of magnetic flux into an electrical signal, and transfers the electrical signal to the controller ( 8 ), the motor assembly ( the gear reduction apparatus ( the planetary gear increase apparatus ( the torque sensor ( wherein the deformation support of the torque sensor (