Bearing mechanism, motor, and disk drive apparatus
US8599513B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2013 |
| Grant date | Dec 3, 2013 |
| Priority date | — |
| Expiry date | Feb 25, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2370/12
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A bearing mechanism includes a shaft portion, a sleeve portion, and an opposing portion including a surface arranged opposite to an end surface of the sleeve portion on one of upper and lower sides with a thrust gap defined therebetween. The thrust gap includes a thrust dynamic pressure bearing portion defined therein. The sleeve portion includes a sleeve body and a thrust plate fixed to an end portion of the sleeve body on the one of the upper and lower sides. The sleeve body includes an annular surface arranged opposite to the thrust plate, and an annular body projecting portion arranged to project in an axial direction inside of the annular surface. An outer circumferential surface of the body projecting portion and an inner circumferential surface of the thrust plate are arranged to be in direct or indirect contact with each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.