Title:
DOME, DIAPHRAGM, AND LOUDSPEAKER
Document Type and Number:
WIPO Patent Application WO/2022/143026
Kind Code:
A1
Abstract:
A dome, comprising a first surface layer (210), a second surface layer (220), and a carbon foam core layer (100). The carbon foam core layer (100) is disposed between the first surface layer (210) and the second surface layer (220); the carbon foam core layer (100) is carbon foam which takes resin as a raw material and is sequentially subjected to foaming and carbonization treatments, and foam holes (101) of the carbon foam core layer (100) are of a pentagonal dodecahedron structure; or the carbon foam core layer (100) is carbon foam which takes mesophase pitch as a raw material and is sequentially subjected to foaming, carbonization and graphitization treatments, and foam holes (101) of the carbon foam core layer (100) are of a net-shaped spherical air hole structure. The present invention further provides a diaphragm comprising the dome, and a loudspeaker. The carbon foam is used as the core layer of the dome, so that not only can the heat conduction and heat dissipation performance of the dome be obviously improved, but also the dome can be kept light in weight, and the acoustic performance and reliability of the loudspeaker are ensured.
Inventors:
LIU HUIHUI (CN)
LI MEILING (CN)
LING FENGGUANG (CN)
LI CHUN (CN)
LI MEILING (CN)
LING FENGGUANG (CN)
LI CHUN (CN)
Application Number:
PCT/CN2021/135880
Publication Date:
July 07, 2022
Filing Date:
December 07, 2021
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H04R9/06; H04R7/12
Foreign References:
| CN112866879A | 2021-05-28 | |||
| CN111065028A | 2020-04-24 | |||
| CN205754825U | 2016-11-30 | |||
| CN106851517A | 2017-06-13 | |||
| GB2031691A | 1980-04-23 | |||
| US20200213795A1 | 2020-07-02 |
Download PDF: