Motor with a chucking device having a turntable and a plurality of balls, and a disk drive apparatus including the motor
US8407731B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 2011 |
| Grant date | Mar 26, 2013 |
| Priority date | — |
| Expiry date | Jan 5, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/2027
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A chucking device includes a disk support unit on which a disk is placed, a resin-made turntable arranged to directly or indirectly support the disk support unit from below, a metal member including a circular plate portion closely secured to a lower surface of the turntable, and a plurality of balls rollably arranged below the disk support unit and above the circular plate portion about a center axis in a circumferential direction. The turntable includes an antiskid member, a bottom rolling surface arranged to support the balls from below through the antiskid member and a cylindrical side rolling surface positioned radially outwards of the balls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.