One-piece speaker having built-in sound cavity
US11451892B2 · kind B2 · utility
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9Claims
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Key dates
| Filing date | Jan 20, 2021 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | Jan 20, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2400/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A one-piece speaker having a built-in sound cavity includes a holder, a casing, a diaphragm, a voice coil, a washer, a magnet, a U-shaped cup, and a circuit board assembly. The speaker has its built-in sound cavity, so that the assembly is more convenient and flexible. The overall structure is simpler and easy to be produced. The sound cavity is larger, the sound sensitivity is better, and there is no need to distinguish between mid and low sounds. The bandwidth is larger, the response speed is faster, the signal frequency allowed to pass is high, the signal distortion is small, and the sound quality is better.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.