Voice coil of speaker
US7050601B2 · kind B2 · utility
5Cited by
1References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2003 |
| Grant date | May 23, 2006 |
| Priority date | — |
| Expiry date | Aug 14, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R9/06
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A speaker is provided in which a coil wire can withstand a large amplitude motion caused by vibration of a voice coil bobbin and a diaphragm, and in which a bias of weight of the voice coil bobbin and the diaphragm caused by a constitution of the coil wire is reduced to a minimum. The coil wire, winding around the voice coil bobbin, is composed of a core thread having a bending strength and a heat-resistance and is wound by a conductive material. An end of the coil wire is directly connected to an external input terminal attached to a frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.