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:
Mar. 31, 2026
Filed:
Dec. 27, 2023
Mazda Motor Corporation, Aki-gun, JP;
Naoki Itasaka, Aki-gun, JP;
Mazda Motor Corporation, Aki-gun, JP;
Abstract
A rotor structure including a rotor, a stator, and magnetic pole parts is provided. Each magnetic pole part includes a radially-magnetized fixed magnetic-force magnet, first variable magnetic-force magnets which are disposed radially outward of, and at both circumferential end sides of, the fixed magnetic-force magnet, respectively, and have a magnetization state that is changeable in the circumferential direction by a magnetic flux, and a high magnetic-reluctance part formed between the fixed magnetic-force magnet and the first variable magnetic-force magnet in the circumferential direction and having a magnetic reluctance higher than the rotor core. The high magnetic-reluctance part includes a first vertically extending part radially extending at a position near the fixed magnetic-force magnet, a second vertically extending part radially extending at a position near one first variable magnetic-force magnet in the circumferential direction, and a laterally extending part connecting the first and second vertically extending parts in the circumferential direction.