Electro-acoustic transducer and method of manufacturing transducer
US7316289B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2003 |
| Grant date | Jan 8, 2008 |
| Priority date | — |
| Expiry date | Jun 23, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2400/07
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electro-acoustic transducer includes a tone generator, a vibrator, and a case. The tone generator includes a diaphragm, and a voice coil joined to the diaphragm. The vibrator includes a magnetic circuit having a magnetic gap at which the voice coil is positioned, and a suspension made of metal and having a first end joined to the magnetic circuit to suspend the magnetic circuit for allowing the magnetic circuit to vibrate. The case is joined to a periphery of the diaphragm, and includes a metal plate joined to a second end of the suspension. The metal plate is joined to the suspensions reliably, hence allowing the electro-acoustic transducer to be manufactured stably.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.