Rotor and motor
US8890386B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2012 |
| Grant date | Nov 18, 2014 |
| Priority date | — |
| Expiry date | Jun 26, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K1/278
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rotor includes first and second rotor cores and a field magnet placed between the first and second rotor cores. Each of the rotor cores has a main body portion and a plurality of extensions, which extend radially outward from the main body portion at equal intervals in the circumferential direction. The field magnet causes the individual extensions to function as magnetic poles. A magnetic pole constituting section including at least part of each of the extensions and the first main body portion of each rotor core are made of different materials, made of the same material but formed as separate elements, or includes regions having different properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.