The invention discloses a power assisting device, a middle motor and an electric bicycle, and the power assisting device comprises a shell, a speed reducing system and a motor; the speed reduction system comprises an input shaft, an intermediate shaft, an output shaft, a planetary gear mechanism, a first gear speed reduction mechanism and a second gear speed reduction mechanism, the sun gear is fixed to the input shaft, the inner gear ring is fixed to the shell, and the planet carrier is rotationally connected to the input shaft; the first gear reducing mechanism comprises a first driving wheel and a first driven wheel, the first driving wheel is fixed on the planet carrier, and the first driven wheel is fixed on the intermediate shaft; the second gear reduction mechanism comprises a second driving wheel and a second driven wheel, the second driving wheel is fixed to the middle shaft, and the second driven wheel is fixed to the output shaft. By additionally arranging the motor and the speed reduction system, larger power can be provided under the working condition with the large slope, and therefore a rider is helped to cross the hillside. And moreover, the speed reduction system has three-stage speed reduction, so that the noise is greatly reduced, and the riding comfort is improved.
本发明公开了一种助力装置、中置电机及电动自行车,其中助力装置,包括:壳体、减速系统和电机;减速系统包括输入轴、中间轴、输出轴、行星齿轮机构、第一齿轮减速机构和第二齿轮减速机构,太阳轮固定于输入轴,内齿圈固定于壳体,行星架转动连接于输入轴;第一齿轮减速机构包括第一主动轮和第一被动轮,第一主动轮固定于行星架,第一被动轮固定于中间轴;第二齿轮减速机构包括第二主动轮和第二被动轮,第二主动轮固定于中间轴,第二被动轮固定于输出轴。通过增加电机和减速系统,可以在坡度较大的工况下可以提供更大的动力,从而帮助骑行者跨越山坡。并且,减速系统具有三级减速,使噪音大大降低,从而提高骑行舒适感。
Power assisting device, middle motor and electric bicycle
助力装置、中置电机及电动自行车
2022-04-26
Patent
Elektronische Ressource
Chinesisch
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