Chucking device, motor, disk drive apparatus and chucking device manufacturing method
US8296789B2 · kind B2 · utility
0Cited by
4References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2011 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Apr 22, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K15/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a chucking device, a rolling guide portion is arranged below an upper cover portion of a rotor holder and radially inwards of a cylinder portion of the rotor holder. This helps restrain the noises generated by the rolling movement of balls from propagating to the outside. Moreover, the turntable and the rolling guide portion are formed of a single resin member extending continuously through a through-hole defined in the rotor holder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.