Rotor and motor
US9239058B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2012 |
| Grant date | Jan 19, 2016 |
| Priority date | — |
| Expiry date | Jan 17, 2034 |
Classification
- Technology area (CPC —)General
Abstract
A rotor includes a first rotor core, a second rotor core, a field magnet, and an auxiliary magnet. The first rotor core includes a first core base and a plurality of first hook-shaped poles. The second rotor core includes a second core base and a plurality of second hook-shaped poles. The first and second hook-shaped poles are alternately arranged in a circumferential direction of the rotor. The field magnet is arranged between the first and second core bases in an axial direction. The field magnet cause the first hook-shaped poles to function as first poles and the second hook-shaped poles to function as second poles. The auxiliary magnet includes at least two interpolar magnet portions, which are integrally formed. Each interpolar magnet portion is arranged in a void between the first hook-shaped pole and the second hook-shaped pole and magnetized in the circumferential direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.