Rotor having concentric deformation absorbing parts around shaft-fastening hole
US8901796B2 · kind B2 · utility
3Cited by
0References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2009 |
| Grant date | Dec 2, 2014 |
| Priority date | — |
| Expiry date | Sep 13, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K1/28
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rotor is provided with a rotor core, a shaft fastening hole provided at the center of the rotor core, and magnets provided to the outer circumferential portion of the rotor core. Circular arc slits are formed at intervals on double concentric circles, respectively, so as to be located around the shaft fastening hole of the rotor core. The slits are arranged in such a manner that the outside slits on the outer circle are each located so as to block the portions located in the intervals between adjacent inside slits on the inner circle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.