Linear vibration motor
US11289990B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2019 |
| Grant date | Mar 29, 2022 |
| Priority date | — |
| Expiry date | Jun 17, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K1/34
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a linear vibration motor including a housing with a receiving space, a vibration unit placed in the receiving space, an elastic part suspending the vibration unit in the receiving space and a coil assembly fixed on the housing and driving the vibration of the vibration unit. The vibration unit includes a weight in which a pole plate is disposed for positioning a magnet. The pole plate includes a body part and a positioning protrusion extending from the body part. The magnet includes a positioning hole corresponding to the positioning protrusion. Compared with the related technology, the linear vibration motor of the invention has the advantages of simpler assembly, higher assembly precision and higher vibration reliability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.