Sound-absorbing material, preparation method thereof and speaker using same
US11570544B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 14, 2021 |
| Grant date | Jan 31, 2023 |
| Priority date | — |
| Expiry date | Dec 14, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided is a sound-absorbing material, including an adsorbent material and a thermal conductive material. The thermal conductive material is uniformly dispersed in the sound-absorbing material. The thermal conductive material includes a carbon fiber material, and a weight ratio of the carbon fiber material in the sound-absorbing material is within a range of 0.05% to 10%. Further provided are a preparation method of the sound-absorbing material and a speaker using the sound-absorbing material. The sound-absorbing material has higher thermal conductivity and can be added to a rear cavity of the speaker to effectively conduct heat generated when the speaker is working, thereby improving the heat dissipation performance of the speaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.