Speaker diaphragm and speaker
US11825285B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2018 |
| Grant date | Nov 21, 2023 |
| Priority date | — |
| Expiry date | Mar 15, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2307/025
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present disclosure provides a speaker diaphragm and a speaker. The speaker diaphragm comprises a thermoplastic polyester elastomer film layer (11), wherein a thermoplastic polyester elastomer is a copolymer composed of a polyester hard segment A and a polyether or aliphatic polyester soft segment B, and the thermoplastic polyester elastomer film layer has a glass transition temperature being less than or equal to 20° C., and a thermoplastic temperature being 50° C.-200° C. The use of the thermoplastic polyester elastomer film layer enables the speaker diaphragm to have a good flexibility, a high reliability, and a good durability, and improves the anti-destructive ability of the speaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.