Spindle motor having holding magnet preventing oil discharge
US8084907B2 · kind B2 · utility
2Cited by
17References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2010 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | May 1, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K5/163
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The spindle motor includes a rotating shaft, a rotor cover which is secured to the rotating shaft and rotates the rotating shaft, a bearing for rotatably supporting the rotating shaft, a holder for holding the bearing, and a holding magnet which is directly mounted to an inner wall of the rotor cover. In this case, the holding magnet is positioned above the bearing to prevent oil from being discharged from the bearing to the outside.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.