Resilient support for an eccentric drive pin of disk drive apparatus
US4758915A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 6, 1987 |
| Grant date | Jul 19, 1988 |
| Priority date | — |
| Expiry date | Apr 6, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B23/0035
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A drive pin support mechanism for an apparatus for data transfer with a magnetic disk having a rigid hub of magnetic material attached centrally thereto, with the apparatus including an upstanding drive spindle for centering engagement in a central opening in the disk hub, a turntable rigidly mounted on the drive spindle and having a permanent magnet for attracting the disk hub and for holding the disk thereon, and a drive pin for driving engagement in an eccentric slot in the disk hub. The drive pin support mechanism includes a drive pin support spring fabricated from resilient sheet metal material and supported on the underside of the turntable for joint rotation therewith. The support spring is so configured as to permit the drive pin mounted thereon to slant in a direction opposite to the predetermined direction of rotation of the turntable. Also included is an abutment on the turntable for limiting the slanting of the drive pin during the operation of the apparatus in order to maintain the magnetic disk in constant angular relation to the turntable and to preclude instantaneous speed variations of the magnetic disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.