Spindle motor including annular magnetic member and disk drive apparatus including such a spindle motor
US8358483B2 · kind B2 · utility
4Cited by
8References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2010 |
| Grant date | Jan 22, 2013 |
| Priority date | — |
| Expiry date | Mar 14, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K7/085
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A stationary portion of a spindle motor includes a base member and a magnetic member. The magnetic member is arranged below a magnet and fixed to the base member. The magnetic member includes an annular plate portion arranged on an upper surface of the base member, and a projecting portion arranged to extend from the plate portion in an axial direction. At least a portion of the projecting portion is press fitted to a wall surface of the base member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.