Linear vibration motor
US11316419B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2019 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | Dec 14, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K33/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An exemplary embodiment of the present invention provides a linear vibration motor including a base with an accommodation space a vibrating unit, an elastic part suspending the vibrating unit, and a coil assembly fixed to the base. The vibrating unit includes a weight block with a through hole, a pole plate accommodated in the through hole, and at least one magnet fixed at the pole plate. The pole plate includes first side walls and second side walls. The at least one magnet is fixed to the first side wall, and a thickness of the second side wall is greater than a thickness of the first side wall. The linear vibration motor partially enlarges the pole plate so as to improve the magnetic field intensity, and then the magnetic flux is increased correspondingly so as to make the vibrating performance of the linear vibration motor better.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.