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:
Jul. 30, 2024
Filed:
Aug. 27, 2020
Nidec Corporation, Kyoto, JP;
Yu-Wei Hsu, Taipei, TW;
Ta-Yin Luo, Taipei, TW;
Hsin-Nan Lin, Taipei, TW;
Sheng-Chan Yen, Taipei, TW;
Guo-Jhih Yan, Taipei, TW;
Cheng-Tsung Liu, Kaohsiung, TW;
NIDEC CORPORATION, Kyoto, JP;
Abstract
A rotor includes a stack of electromagnetic steel plates each including through-hole groups with through-holes extending through the respective electromagnetic steel plates. In each of the through-hole groups, at least one of the through-holes accommodates a magnet and at least a portion of the through-holes that does not accommodate any magnet is filled with an electrically conductive material. When the rotor is seen axially, at two circumferential sides of a magnetic flux passage that is adjacent to the magnet, a width of the magnetic flux passage adjacent a first side of the magnet is larger than a width of the magnetic flux passage near a second side of the magnet.