Loud speaker manufacturing method
US8516681B2 · kind B2 · utility
1Cited by
9References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2009 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Dec 26, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/5313
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a loud speaker, the diaphragm has a protruded part protruding on a yoke side on the inside and in the vicinity of an inner coupling part as a coupled portion to a voice coil. The loud speaker can be manufactured with the voice coil accurately positioned with respect to a diaphragm, and the voice coil is accurately vibrated vertically inside a magnetic gap. The possibility of the voice coil coming into contact with a plate and a yoke as a magnetic circuit body of the loud speaker can be reduced, thereby to improve production efficiency and a yield at the time of manufacturing the loud speaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.