Motor including dynamic bearing with seal portion and disk drive apparatus including the same
US8941946B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 3, 2013 |
| Grant date | Jan 27, 2015 |
| Priority date | — |
| Expiry date | May 3, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2370/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor includes a stationary portion and a rotating portion that is rotatable about a central axis extending in a vertical direction with respect to the stationary portion. The stationary portion includes a shaft and a cup portion. The shaft extends in an axial direction and is fixed to the cup portion. The rotating portion includes a sleeve portion including at least a portion thereof arranged inside the cup portion, and is arranged opposite to the shaft. The cup portion includes a cylindrical portion, a bottom plate portion, and a first conical portion. The cylindrical portion is radially opposite to an outer circumferential surface of the sleeve portion. The bottom plate portion is inside the cylindrical portion. The first conical portion extends upward from an inner end portion of the bottom plate portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.