Embedded magnet rotor and rotary electric machine
US12218548B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 9, 2022 |
| Grant date | Feb 4, 2025 |
| Priority date | — |
| Expiry date | Jul 24, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2213/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
According to an embodiment, an embedded magnet rotor comprises: a rotor shaft, a rotor core having permanent magnet housing spaces; and flat plate-shaped permanent magnets. Permanent magnet housing spaces each extend more radially outward than a position where the permanent magnet is held by a magnet holding outer projection and each have a communication opening communicating with a gap space. A radial thickness of each of the two chips sandwiching the communication opening and a circumferential width of the communication opening are in such a dimensional relation as to prevent a fragment produced by break of the permanent magnet from protruding from the communication opening and coming into contact with the stator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.