US Patent 11235661 Electric drive assembly

A reduction drive assembly includes a housing and a flange. Outer surfaces of the spindle and the flange form at least one fillet corner. A motor output shaft extends through an aperture of the spindle. The reduction drive assembly includes a planetary gear assembly that includes a sun gear driven by the motor output shaft and gears. The reduction drive assembly includes a fixed ring gear that is meshed with a second stage gear of each of the planet gears, an output hub, a rotating ring gear coupled to the output hub and meshed with a first stage gear of each of the planet gears, a set of bearings positioned radially between the spindle and the output hub and axially between the fixed ring gear and the flange of the housing, and a spacer ring positioned between the set of bearings and adjacent the at least one fillet corner.