Micro-motor and apparatus using the same motor
US6628025B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2001 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Dec 14, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K23/56
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor includes (a) a cylindrical frame made of ferromagnetic material, (b) a pipe fitted in and disposed within the frame concentrically, (c) a sintered bearing press-fitted into the pipe, (d) a cylindrical magnet fixed on an outer wall of the pipe at an inner wall of the magnet, and (e) a cylindrical coil facing the magnet via an annular space, where the frame and the pipe are welded at a fitted section therebetween. This structure allows the motor to withstand a strong enough shock. An apparatus requiring a vibration motor can employ this motor having a large vibrator, so that great vibrations are available for the apparatus. As a result, the apparatus—utilizing the great vibrations as various functions—is obtainable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.