Slim motor and devices mounting the same motor
US6563242B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2001 |
| Grant date | May 13, 2003 |
| Priority date | — |
| Expiry date | May 27, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K5/225
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A slim motor good for a portable device includes a frame, pipe, magnet, coil, shaft, first bearing and a second bearing (inside bearing). The pipe is disposed on an inner wall of the cylindrical magnet, and an outer diameter of the second bearing is set at approx. the same as that of the pipe. The second bearing is aligned to the pipe in an axial direction and fixed on the inner wall of the magnet. This structure allows the magnet to extend axially long enough, and solves conventional problems including power consumption, slant of the shaft, motor efficiency, productivity and the like, thereby contributing to achieving a slimmer motor and a slimmed-down device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.