Electromagnetic speaker
US9820051B2 · kind B2 · utility
0Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2015 |
| Grant date | Nov 14, 2017 |
| Priority date | — |
| Expiry date | Aug 17, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R9/066
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electromagnetic speaker is disclosed and includes a frame having an elongated axis, a magnet magnetized along a radial direction and received in the frame, a voice coil fixed relatively to the frame and surrounding the magnet, a first elastic plate suspending the magnet in the frame, and a vibrating plate driven by the magnet to move along the elongated axis of the frame. By virtue of the configuration mentioned above, the electromagnetic speaker has a small form with a reduced height. Further, greater driving force is generated by the magnet driving the vibrating plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.