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:
Nov. 28, 2023
Filed:
Mar. 18, 2022
Applicant:
Mitsubishi Electric Corporation, Tokyo, JP;
Inventor:
Takaaki Nagashima, Tokyo, JP;
Assignee:
Mitsubishi Electric Corporation, Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02K 1/27 (2022.01); H02K 1/28 (2006.01); H02K 1/276 (2022.01);
U.S. Cl.
CPC ...
H02K 1/276 (2013.01); H02K 1/28 (2013.01); H02K 2213/03 (2013.01);
Abstract
In a rotor for a rotating electric machine, a key portion, a first stress relaxation groove, a second stress relaxation groove, and a protruding portion are provided at an inner periphery of a rotor core. The first stress relaxation groove is formed to be adjacent to the key portion in a circumferential direction of the rotor core. The protruding portion is formed between the first stress relaxation groove and the second stress relaxation groove, and is in contact with an outer periphery of a shaft.