Micro speaker having a hermetically sealed acoustic chamber with increased volume
US10433048B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2017 |
| Grant date | Oct 1, 2019 |
| Priority date | — |
| Expiry date | Aug 31, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2201/029
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A micro speaker assembly including a speaker enclosure having an enclosure wall separating a surrounding environment from an encased space, wherein the enclosure wall defines, in part, an acoustic channel that acoustically couples the encased space to the surrounding environment, and the enclosure wall comprises a chemically etched insert molded metal portion that is mechanically interlocked and hermetically sealed to a plastic portion. The micro speaker further including a speaker assembly positioned within the encased space, the speaker assembly having a sound radiating surface facing the metal portion of the enclosure wall, a voice coil extending from the sound radiating surface, a magnet assembly having a magnetic gap aligned with the voice coil, and an acoustic chamber formed, in part, by the metal portion of the enclosure wall and the sound radiating surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.