Outer rotor motor
US5304879A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 1992 |
| Grant date | Apr 19, 1994 |
| Priority date | — |
| Expiry date | Dec 7, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K7/14
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an outer rotor motor (1): a hub base (3) is in a center of an upper side of the motor (1); a chucking magnet (16) for carrying a disk is near the hub base (3); a spindle (4) is fixed to a central hole of a rotor yoke which is provided with a permanent magnet (15) in its outer peripheral portion; the spindle (4) is supported by a bearing (5) fixed to a boss (7b) of a bearing housing (7) in which a ring-like rib (7c) is concentrically formed around the boss (7b) to form a circumferential groove (7d) therebetween and a hub of a stator (8) is mounted on the rib (7c); a leaf spring (12) is over the groove (7d) of the bearing housing placed under the base (3); and a drive pin (10) is fixed to a free end of the spring (12) to extend upward from the base (3) due to its resiliency through a hole of the hub base (3).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.