Micro motor
US8558489B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2010 |
| Grant date | Oct 15, 2013 |
| Priority date | — |
| Expiry date | Nov 9, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K7/083
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A thinly configured and brushless miniature DC micro motor that includes at least two substantially-flat motor cells that are aligned axially. Each motor cell comprises a stator coil having an elongate opening and passage for a rotor shaft, and a cross-polarized rotor magnet carried on the rotor shaft and received within the elongate opening. The micro motor also includes a frame substrate that fixably supports the stator coils of the motor cells while providing a bearing means for rotatably supporting the rotor shaft, so that selectively energizing one of the motor cells creates an electric current in the stator coil interacting with a magnetic field of the received rotor magnet to generate a torque between the rotor shaft and the frame substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.