公开(公告)号：US20230262394A1

公开(公告)日：2023-08-17

申请号：US17631015

申请日：2018-12-14

Applicant: GOERTEK INC.

Inventor： Fengguang LING ,  Shuqiang WANG ,  Chun LI ,  Chunfa LIU

IPC: H04R7/04 ,  H04R31/00 ,  C08L23/08 ,  C08K5/00

CPC classification number: H04R7/04 ,  H04R31/003 ,  C08L23/0869 ,  C08K5/0025 ,  H04R2207/021 ,  H04R2231/001 ,  C08L2312/00 ,  C08L2203/20

Abstract: A diaphragm applied to a sound producing device, a sound producing device, and a method for assembling the same. The diaphragm comprises a film layer prepared by means of a crosslinking reaction of at least one of an ethylene-acrylate copolymer and an ethylene-acrylate-carboxylic acid copolymer. The molecular structure of the diaphragm comprises a vinyl-acrylic group. The group causes the material to have a less symmetrical chemical structure, a reduced tacticity and an increased steric hindrance, such that the diaphragm has a high loss factor, and the sound producing device achieves a good damping effect.