Stator grounding means based on radial interference
US5965966A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1998 |
| Grant date | Oct 12, 1999 |
| Priority date | — |
| Expiry date | Feb 12, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K11/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved spindle motor design of a type especially for use in a disc drive is disclosed, which provides a simplified design for installation of the stator over the shaft, and should especially locate the stack both radially and axially in a specific location relative to the shaft so that its location relative to the surrounding, rotating parts of the motor is fixed. In addition, the improved spindle motor design fixes the stack on the shaft through radial interference, eliminating the need for adhesive to fix the stator to the shaft. Also, the design minimizes the cost of assembling the stack on the shaft, isolates the stack and shaft from conveying vibration one to the other, and electrically grounds the stack to the shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.