Anisotropic magnet brushless motor having a rotor with elastic insulating support structure
US6404086B1 · kind B1 · utility
42Cited by
14References
8Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Sep 15, 1997 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | Sep 15, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2205/09
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A permanent-magnet type brushless motor has a rotor which is made by integrally forming a rotating magnetic pole comprising a cylindrical multi-pole anisotropic magnet, a shaft and an elastic insulating supporting member having rigidity lower than at least that of the shaft. The multi-pole anisotropic magnet causes its magnetic flux to flow to form the closed magnetic circuit, thereby eliminating the necessity of forming the closed magnetic circuit using an inner stator core in the magnet required for the radial anisotropic magnet. A cylindrical casing holding therein a stator core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.