Patent ID: 11958567
Assignee: MOBILETRON ELECTRONICS CO., LTD
Field: Transport (Mechanical engineering)
Classification: CPC B  G  H | IPC B  G  H

Claim 9:
10. The coaxial mid-drive power device as claimed in claim 9, wherein
the reducing structure has an internal gear ring fixed in the motor base;
a first-stage carrier and a second-stage carrier are respectively disposed on two sides in the internal gear ring;
a plurality of first planetary gears is engaged with a side surface of the first-stage carrier facing away from the second-stage carrier and is arranged around the shaft axis, wherein an outside of each of the plurality of first planetary gears is meshed with the internal gear ring, and an inside of each of the plurality of first planetary gears is meshed with another portion of the driving gear;
a plurality of second planetary gears is engaged between another side surface of the first-stage carrier and the second-stage carrier and is arranged around the shaft axis, wherein an outside of each of the plurality of second planetary gears is meshed with the internal gear ring, and an inside of each of the plurality of second planetary gears is meshed with a sun gear;
the sleeve is concentrically engaged with the second-stage carrier and protrudes from a coverage range of the internal gear ring.