Double-vibrating-diaphragm loudspeaker module
US9628900B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2013 |
| Grant date | Apr 18, 2017 |
| Priority date | — |
| Expiry date | Dec 13, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2400/07
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A double-diaphragm loudspeaker module comprises: a housing providing with a first sound hole and a second sound hole; a supporting structure fixed on an inner wall of the housing; and a loudspeaker unit comprising a first diaphragm, a sound coil, a magnetic circuit system and a second diaphragm. The sound coil and the magnetic circuit system are separately combined with the first diaphragm and the second diaphragm. The housing, the supporting structure and the loudspeaker unit form a first front sound cavity, a second front sound cavity, and a rear sound cavity. The first front sound cavity comprises a space between the first diaphragm and the housing. The second front sound cavity comprises a space between the second diaphragm and the housing. The rear sound cavity comprises a space between the first diaphragm and the second diaphragm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.