Speaker with elastic plate coupled to diaphragm
US8774448B2 · kind B2 · utility
4Cited by
1References
12Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 27, 2013 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Aug 27, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R9/025
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A speaker includes a vibrating unit, and a magnetic circuit unit. The vibrating unit includes a diaphragm, an elastic plate coupled with the diaphragm, and a voice coil electrically connecting to the elastic plate. The vibrating unit is mounted to and positioned by the magnetic circuit unit. A projection of the diaphragm on the magnetic circuit unit is disposed within an outline of the magnetic circuit unit. The speaker has no frame or any structure with a frame configuration, which makes the magnetic circuit unit larger and more powerful.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.