Spindle motor and disk drive apparatus
US9837113B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2015 |
| Grant date | Dec 5, 2017 |
| Priority date | — |
| Expiry date | Dec 4, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A stationary portion of a spindle motor includes a stator portion and an outside surface. The stator portion includes a stator core and coils. The outside surface extends in an axial direction parallel or substantially parallel to a central axis, and is centered on the central axis. The spindle motor includes a fixing portion at which an inside surface of the stator core and the outside surface are fixed to each other. The fixing portion includes a first press fit portion, a second press fit portion, and a gap arranged therein. The gap is located between the first press fit portion and the second press fit portion. The second press fit portion is located above the first press fit portion. At least a portion of the second press fit portion is located above a middle of the stator core in the axial direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.