Speaker module and sound production device
US10638233B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2017 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Feb 10, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2307/027
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a speaker module and a sound production device. The module comprises a module shell and a speaker unit mounted in the module shell. The module shell comprises a shell main body and two fixed pole plates connected fixedly on the shell main body. The two fixed pole plates are insulated from each other, and each of the two fixed pole plates has a connecting portion exposed to the outside of the shell main body. A vibration system of the speaker unit is provided with a movable pole plate, and each of the two fixed pole plates together with the movable pole plate form a variable capacitor. The speaker module is configured to output an electrical signal representing a vibration displacement of the vibration system by the connecting portions of the two fixed pole plates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.