US 12,231,018 B2
Motor and electric appliance
Jifang Lu, Foshan (CN); Guilie Zhong, Foshan (CN); Junfeng Hou, Foshan (CN); Dan Chen, Foshan (CN); and Jian Hu, Foshan (CN)
Assigned to GUANGDONG MIDEA WHITE HOME APPLIANCE TECHNOLOGY INNOVATION CENTER CO., LTD., Foshan (CN); GUANGDONG WELLING MOTOR MANUFACTURING CO., LTD., Foshan (CN); and MIDEA GROUP CO., LTD., Foshan (CN)
Filed by Guangdong Midea White Home Appliance Technology Innovation Center Co., Ltd., Foshan (CN); Guangdong Welling Motor Manufacturing Co., Ltd., Foshan (CN); and Midea Group Co., Ltd., Foshan (CN)
Filed on Aug. 16, 2022, as Appl. No. 17/889,307.
Application 17/889,307 is a continuation of application No. PCT/CN2021/074296, filed on Jan. 29, 2021.
Claims priority of application No. 202010096960.8 (CN), filed on Feb. 17, 2020; and application No. 202020178756.6 (CN), filed on Feb. 17, 2020.
Prior Publication US 2022/0393542 A1, Dec. 8, 2022
Int. Cl. H02K 11/40 (2016.01); F16C 19/00 (2006.01); H02K 5/16 (2006.01); H02K 5/173 (2006.01); H02K 5/22 (2006.01); H02K 7/08 (2006.01)
CPC H02K 5/1732 (2013.01) [H02K 5/225 (2013.01); H02K 7/083 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A motor, comprising:
a rotating shaft;
a stator;
a rotor, disposed on the rotating shaft, spaced apart from the stator, and embedded in the stator;
a first end cover;
a first bearing, comprising:
a first outer ring, fixed on the first end cover and insulated from at least part of the first end cover;
a first inner ring, embedded in the first outer ring; and
a first ball, disposed between the first outer ring and the first inner ring;
a second end cover; and
a second bearing, comprising:
a second outer ring, fixed on the second end cover and short-circuited with the second end cover;
a second inner ring, embedded in the second outer ring; and
a second ball, disposed between the second outer ring and the second inner ring;
wherein;
the rotating shaft is fixed on the first inner ring and rotationally supported on the first end cover;
the rotating shaft is fixed on the second inner ring and rotationally supported on the second end cover;
the first outer ring is short-circuited with the second outer ring or the first outer ring is short-circuited with the second end cover; and
the at least part of the first end cover that is insulated from the first outer ring is short-circuited with a stator core of the stator and is grounded.