The invention provides a power module of an electric power-assisted bicycle. The power module comprises a pedal shaft, a shell, a motor, a speed reducer, a fluted disc output shaft, a pedal shaft first bidirectional bearing and a sensor assembly. An interval part of the shell divides the inner space into a motor containing part and a speed reducer containing part in the axial direction, and the motor containing part and the speed reducer containing part are used for containing a motor and a speed reducer respectively. A stator of the motor and fixed teeth of the speed reducer are fixed to the first side and the second side, opposite to each other, of the interval part respectively. The two ends of the speed reducer input shaft are connected to the motor and the speed reducer respectively, and the input shaft body part between the motor and the speed reducer is connected with the third side of the interval part. By means of the configuration mode that the three sides of the interval part are connected respectively, the space utilization rate of the power module can be optimized, the torque sensor is attached to the pedal shaft, and meanwhile the structure is strong, the rotation axis of the input shaft of the speed reducer is stable, and the stator heat dissipation effect is achieved.
本案提供一种电动助力自行车的动力模块,包括脚踏轴、壳体、电机、减速机、齿盘出轴、脚踏轴第一双向轴承以及传感器组件。壳体的间隔部沿轴向将内部空间分为电机容置部及减速机容置部,分别容置电机及减速机。电机的定子及减速机的固定齿分别固定于间隔部上相反的第一侧和第二侧。减速机输入轴的两端分别连接至电机及减速机,其间的输入轴本体部则连接间隔部的第三侧。通过间隔部三侧分别连接的配置方式可使动力模块的空间利用率达到最佳化,并使力矩传感器贴附于脚踏轴上,同时满足结构强固、减速机输入轴旋转轴线稳定及定子散热效果。
Power module of electric power-assisted bicycle
电动助力自行车的动力模块
2025-01-17
Patent
Electronic Resource
Chinese
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