Spindle motor and disk driver having the same
US8370868B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2011 |
| Grant date | Feb 5, 2013 |
| Priority date | — |
| Expiry date | Jul 12, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/2009
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed herein is provided a spindle motor and a disk driver having the same. There is provided a spindle motor including: a sleeve rotatably supporting a shaft; a bush combined with the top portion of the shaft to be rotated together with the shaft; a rotor case including a cylindrical wall part combined with the outer peripheral surface of the bush; an air flow spreading part formed on the axial bottom part of the bush and spreading the air flow generated between the shaft and the sleeve to the radial outer side when the shaft is rotated; and a sealing part formed on the axial bottom portion of the bush and formed between the cylindrical wall part and the air flow spreading part to seal oil when the shaft is rotated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.