The invention discloses a center shaft torque sensor which can measure the torque, pedaling frequency and direction of a center shaft, can detect the position of a magnet corresponding to a crank, can calculate the angle of the crank, and can provide a switching signal of motor starting assistance. A steel ball and pin roller combination is adopted between a middle shaft and a half shaft to transmit torque, the steel ball extrudes the conical surface of a sliding ring, the sliding ring axially compresses a reset spring and a disc spring, the sliding ring indirectly pushes two repulsive single-pole magnetic rings to axially move, air gaps are formed in the single-pole magnetic rings, and magnets with opposite polarities are arranged in the air gaps. One linear Hall is used for measuring the displacement of the single-pole magnetic ring and detecting the position of the magnet, and two switch Hall is used for measuring the direction and the pedaling frequency of the multi-pole magnetic ring.
本发明公开了一种中轴扭矩传感器,能测量中轴的扭矩和踏频、方向,能检测曲柄对应的磁铁位置可以计算曲柄角度,并能提供一个电机启动助力的开关信号。在中轴与半轴之间采用钢珠和滚柱组合传递扭矩,钢珠挤压滑环圆锥面,滑环轴向压缩复位弹簧和碟簧,滑环间接推动两个对斥的单极磁环轴向移动,单极磁环开设气隙,气隙内设置极性相反的磁铁,一个线性霍尔测量单极磁环位移和检测磁铁位置,两个开关霍尔测量多极磁环的方向和踏频。
Middle shaft torque sensor
一种中轴扭矩传感器
2023-06-06
Patent
Electronic Resource
Chinese
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