The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 06, 2023
Filed:
Jul. 13, 2021
Applicant:
Jing-jin Electric Technologies Co., Ltd., Beijing, CN;
Inventors:
Assignee:
Jing-Jin Electric Technologies Co., Ltd, Beijing, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 29/03 (2006.01); H02K 1/276 (2022.01);
U.S. Cl.
CPC ...
H02K 29/03 (2013.01); H02K 1/276 (2013.01); H02K 2201/06 (2013.01); H02K 2213/03 (2013.01);
Abstract
A rotor core is provided for a step-skewing motor that includes rotor core segments mutually staggered by a preset angle. Each of the rotor core segments includes magnet slots along a circumferential direction, with a magnet provided in the magnet slot. An outer circular surface of each of the rotor core segments is provided thereon with a number of auxiliary grooves extending across the segment in an axial direction, and positions and/or cross-sectional shapes of the auxiliary grooves on the rotor core segments are not completely same so as to suppress torque ripple and vibration noise when the motor rotates.