Diaphragm for sound producing device, sound producing device, and method for assembling the same
US12256206B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Dec 14, 2018 |
| Grant date | Mar 18, 2025 |
| Priority date | — |
| Expiry date | Jan 27, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2307/025
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A diaphragm applied to a sound producing device, a sound producing device, and a method for assembling the same. The diaphragm comprises a film layer prepared by means of a crosslinking reaction of at least one of an ethylene-acrylate copolymer and an ethylene-acrylate-carboxylic acid copolymer. The molecular structure of the diaphragm comprises a vinyl-acrylic group. The group causes the material to have a less symmetrical chemical structure, a reduced tacticity and an increased steric hindrance, such that the diaphragm has a high loss factor, and the sound producing device achieves a good damping effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.