Stator ring mass/stiffener for improved acoustics
US6608734B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2001 |
| Grant date | Aug 19, 2003 |
| Priority date | — |
| Expiry date | Jul 12, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K1/146
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A disc drive spindle motor having improved acoustic properties for use in a disc drive data storage system is provided. In one embodiment, the disc drive spindle motor a base, a stationary member, a rotor and a stator. A bearing interconnects the rotor with the stationary member and allows the rotor to rotate about the stationary member. The stator includes a plurality of teeth extending from a back iron. At least one stiffening member is coupled to the stator, joining the teeth at an end opposite the back iron. The stiffening member substantially reduces vibrations in the stator thereby reducing acoustic noise generated by the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.