Motor having chucking device and disk driving apparatus including same
US7873971B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2008 |
| Grant date | Jan 18, 2011 |
| Priority date | — |
| Expiry date | Jul 30, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B17/0282
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A motor includes a chucking device to hold a disk having a central opening in a detachable manner. In the chucking device, a turntable part is arranged above a rotor holder and has a disk support surface for supporting the disk. An axially slidable cone part is arranged above the turntable part. A resilient member is axially arranged between the turntable part and the cone part upwardly biases the cone part. Further, the turntable part includes an inner table made of a metal and fixed to the shaft, and an outer table made of a resin material and fixed to an outside of the inner table. The outer table has the disk support surface and is axially spaced apart from the rotor holder in a position where the inner table and the outer table are fixed to each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.