Linear vibration motor
US11309782B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2019 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Nov 29, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB06B1/045
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a linear vibration motor, which includes a shell with a receiving space and a vibrator and a stator both housed in the shell body. One of the vibrator and the stator includes a solenoid, the other of the vibrator and the stator includes a magnetic circuit structure having a magnetic conductive frame and four magnets surrounding the magnetic conductive frame. By virtue of the configuration of the invention, the magnetic field strength can be significantly enhanced. The magnetic conductive frame can not only be used for magnetic guiding and fixing the magnets, but also can be used for fixing the weight to simplify the assembly structure and improve the reliability. Further, the response speed of the linear vibration motor is fast, the acceleration is great and the frequency band is wide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.