Disk drive with profiled attachment of a spindle and hub
US5459628A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 21, 1994 |
| Grant date | Oct 17, 1995 |
| Priority date | — |
| Expiry date | Mar 21, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B25/043
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A technique for joining a hub and a spindle of a disk drive is disclosed wherein the hub and spindle are joined by an interference fit. The interface between the hub and the spindle is provided with a surface contact pattern having a zone of contact extending about the spindle of the disk drive motor in the form of a circle or a very narrow height cylinder. Extending either unidirectionally or bidirectionally from the continuous zone of contact are zones of surface contact alternating with zones of relief which eliminate contact between the hub and the spindle. The continuous contact zone circumscribing the spindle of the drive motor insures that the hub is anchored relative to the spindle and anchors the hub to prevent tilting or cocking of the hub with respect to the spindle and spin axis of the spindle. By preventing cocking or tilting of the hub, any resultant cocking or tilting of the disk stack is prevented thereby improving the operation and reliability of the disk drive and preventing disk stack wobble and track misregistration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.