Chucking mechanism, brushless motor having the chucking mechanism, and disk driving apparatus having the brushless motor
US7921438B2 · kind B2 · utility
2Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2007 |
| Grant date | Apr 5, 2011 |
| Priority date | — |
| Expiry date | Dec 23, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B17/0282
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A claw member includes at a radially inward surface thereof a protrusion inclined surface in order to minimize deformation occurring in an axial direction to an elastic member which is a coil spring. The protrusion inclined surface is preferably inclined, when a tip portion of the claw member is at an axially lowest point, to be substantially perpendicular to the central axis, or such that the further radially inward a portion thereof is the axially lower the portion is. By virtue of such configuration, the protrusion inclined surface minimizes deformation occurring to the elastic member in the axial direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.