Disk player, and self-compensating-dynamic-balancer (SCDB) integrated turntable, SCDB integrated clamper and SCDB integrated spindle motor employed in the same
US6731588B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 19, 2001 |
| Grant date | May 4, 2004 |
| Priority date | — |
| Expiry date | Apr 9, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2122
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk player having a self-compensating dynamic balancer so as to subdue internal vibrations due to an eccentric center of mass of a disk, a self-compensating-dynamic-balancer integrated turntable, a self-compensating-dynamic-balancer integrated clamper, and a self-compensating-dynamic-balancer integrated spindle motor which are employed in the disk player. The self-compensating dynamic balancer is embodied by forming a cavity in a turntable, clamper, a rotor of a spindle motor, or the like, and disposing movable members including movable rigid bodies and/or a liquid therein. Internal vibrations due to the eccentric mass of the disk are subdued effectively the movable members moving away from a revolution center according to respective centrifugal forces where the self-compensating dynamic balancer rotates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.