Vibration generator
US11621622B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2020 |
| Grant date | Apr 4, 2023 |
| Priority date | — |
| Expiry date | Dec 17, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB06B1/045
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vibration generator includes a housing, a first vibrator, and a second vibrator. The first vibrator includes a hollow yoke having a through hole, a magnet disposed within the through hole of the yoke, and a first elastic support member. The second vibrator includes a coil disposed above or below the magnet within the through hole of the yoke, and a second elastic support member to which the coil is fixed and that is disposed to extend from the inside to the outside of the through hole of the yoke and that is fixed to the housing. The first vibrator vibrates at a first natural frequency in a direction connecting both side portions of the yoke. The second vibrator vibrates at a second natural frequency that is different from the first natural frequency, in the direction connecting the both side portions of the yoke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.