Speaker diaphragm and speaker
US11317211B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2018 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | Oct 13, 2038 |
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 diaphragm includes two surface layers compounded together and at least one intermediate layer located between the two surface layers, at least one of the surface layers being a thermoplastic polyester elastomer film layer (11), at least one intermediate layers being an adhesive layer (12), wherein the plastic polyester elastomer is a copolymer composed of a hard segment A of polyester and a soft segment B of polyether or aliphatic polyester, and the hard segment A of polyester has a mass percentage of 10-95%. The speaker diaphragm accommodates an excellent rigidity, a good damping performance and resilience and so on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.