Title:
ROTOR AND MOTOR COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2020/149626
Kind Code:
A1
Abstract:
An embodiment presents a motor comprising: a shaft; a rotor to which the shaft is coupled; and a stator which is disposed at the exterior of the rotor, wherein: the stator comprises a stator core and a coil which is wound around the stator core; the stator core comprises a yoke, a tooth which protrudes from the yoke, and a first groove and a second groove which are formed on the inner surface of the tooth; and distances from the center of the circumferential direction of the tooth to the first groove and the second groove are different from each other. Accordingly, the motor can reduce cogging torque through a design for the grooves disposed to be asymmetrical with reference to the center of the tooth.
Inventors:
YANG JUNG SOO (KR)
Application Number:
PCT/KR2020/000712
Publication Date:
July 23, 2020
Filing Date:
January 15, 2020
Export Citation:
Assignee:
LG INNOTEK CO LTD (KR)
International Classes:
H02K1/27; H02K1/02; H02K1/28; H02K16/02; H02K21/24
Domestic Patent References:
| WO2018220677A1 | 2018-12-06 |
Foreign References:
| JP2016082686A | 2016-05-16 | |||
| US20090115278A1 | 2009-05-07 | |||
| JP2013110933A | 2013-06-06 | |||
| KR20160139254A | 2016-12-07 |
Attorney, Agent or Firm:
DANA PATENT LAW FIRM (KR)
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