Outer-rotor type spindle motor with a reduced thickness in the axial direction
US5442247A · kind A · utility
12Cited by
4References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 19, 1994 |
| Grant date | Aug 15, 1995 |
| Priority date | — |
| Expiry date | May 19, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2370/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In an outer-rotor type spindle motor: a front-end portion of a spindle (4) forming a stationary member passes through a central portion of a hub plate (7c) (onto which a disk (11) is loaded) of a rotor yoke (6) forming a rotating member; and, the front-end portion having been passed through the central portion of the hub plate (7a) of the rotor yoke (6) forms a head portion (4c) which is formed into a semispherical shape having been obliquely cut.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.