A motorized gear reducer is provided with a hollow motor in the housing and including an annular rotor having a through hole, and a shaft passing through the through hole; and a planetary gear train in the through hole and placed on the shaft, the planetary gear train including a sun gear assembly having a first sun gear in the housing, and a second sun gear on the shaft; planet gear assemblies equally spaced apart around the sun gear assembly, each including a first planet gear meshing with the first sun gear, and a second planet gear coaxially disposed with the first planet gear and meshing with the second sun gear; and a ring gear on an inner surface of the rotor. A speed reduction ratio of a first stage and a speed reduction ratio of a second stage are rendered.
Motorized gear reducer
2018-12-11
Patent
Elektronische Ressource
Englisch