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. 25, 2024
Filed:
Feb. 07, 2020
Mitsubishi Electric Corporation, Tokyo, JP;
Kengo Komori, Tokyo, JP;
Kosho Yamane, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
The rotating electrical machine includes a rotor that has a rotor core, a key portion formed protruding in a radial direction from an inner peripheral face of the rotor core, a stress relaxing groove, which is provided at both ends of the key portion and is formed recessed farther to a radial direction outer side than the inner peripheral face of the rotor core, and a multiple of balancing holes provided one each between each pair of a multiple of magnetic poles of the rotor core, wherein lengths from a center of the rotor core to a center of each of the multiple of balancing holes are such that a length of a first straight line that passes through a center of the key portion is less than a length of an nth straight line that intersects with the first straight line vertically.