Miniature sound generator
US10091570B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2017 |
| Grant date | Oct 2, 2018 |
| Priority date | — |
| Expiry date | Feb 5, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2400/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A miniature sound generator includes a vibration system including a first diaphragm, a voice coil supporting and driving the first diaphragm to vibrate, and a second diaphragm arranged at one side of the voice coil far away from the first diaphragm and elastically supporting the voice coil; a fixing system fixed with the second diaphragm. The fixing system includes a frame supporting the second diaphragm and a magnetic circuit system arranged in the frame. The second diaphragm includes an insulating body and a conductive framework formed in the insulating body for electrically connecting with the voice coil and an external circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.