Linear vibration motor
US12407233B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2023 |
| Grant date | Sep 2, 2025 |
| Priority date | — |
| Expiry date | Jan 15, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K33/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A linear vibration motor includes a housing with a receiving space, a vibration assembly, and a coil. The vibration assembly includes a mass block, a magnet assembly fixed to the mass block, and an elastic member. The mass block is provided with a receiving space for receiving the magnet assembly. The mass block includes a side wall and a bottom wall that enclose to form the receiving space. The magnet assembly includes a first magnet, a second magnet, and a third magnet that are fixed to the bottom wall. The mass block further includes a fixation boss protruding from the bottom wall toward the second magnet. The second magnet is fixed to the fixation boss. In the linear vibration motor, bonding strength between the magnet assembly and the mass block is good, which effectively improves vibration stability and magnetic field performance of the linear vibration motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.