Patent ID: 11876412
Assignee: BEIJING XIAOMI ROBOT TECHNOLOGY CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 0:
1. A servo motor, comprising:
a housing;
a rotor arranged in the housing and having a rotor support and a rotor shaft;
a stator arranged in the housing;
a Hall magnet arranged on the rotor;
a printed circuit board arranged in the housing and provided with a position sensor facing the Hall magnet; and
a planetary reduction mechanism, the planetary reduction mechanism comprising a sun gear, an inner gear ring, a planetary carrier, a motor output shaft, and a plurality of planetary gears meshing with the sun gear and the inner gear ring, the sun gear being coaxially connected with the rotor shaft, planetary shafts of the plurality of the planetary gears being connected with the plurality carrier and the motor output shaft,
wherein the planetary reduction mechanism further comprises a rotor bearing, the motor output shaft defines a bearing mounting groove, the rotor shaft is provided with a flange, the rotor bearing is fitted over the rotor shaft, an end of the rotor bearing abuts against the flange, and the other end of the rotor bearing abuts against an inner wall of the bearing mounting groove.