Linear vibration motor
US8188623B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2010 |
| Grant date | May 29, 2012 |
| Priority date | — |
| Expiry date | Dec 3, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K7/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed herein is a linear vibration motor. The motor includes a casing surrounding the top and widthwise side of the motor, and a bracket surrounding the bottom and lengthwise side of the motor. A plate is provided on an inner surface of a side of the bracket and integrally has a cylindrical part to accommodate a coil. A mass body is provided in a central portion of the bracket and vibrates horizontally, a yoke is provided on a side surface of the mass body, and a magnet is mounted to a central portion of the yoke to be inserted into an internal space of the coil. A spring couples the plate with the yoke, thus transmitting vibratory force to the motor. An extension part extends from an end of the spring, and a bearing is provided on an end of the extension part, thus minimizing friction with the casing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.