公开(公告)号：US20230345178A1

公开(公告)日：2023-10-26

申请号：US18027998

申请日：2021-08-25

Applicant: GOERTEK INC.

Inventor： Cuicui WANG ,  Bing HUI ,  Fengguang LING ,  Chun LI

IPC: H04R7/02 ,  H04R9/02

CPC classification number: H04R7/02 ,  H04R9/025

Abstract: A diaphragm and a sound generating apparatus. The diaphragm comprises at least one elastomer layer, and the elastomer layer is made of a rubber compound. The rubber compound comprises nitrile rubber and hydrogenated nitrile rubber. Both the nitrile rubber and the hydrogenated nitrile rubber contain acrylonitrile blocks. In terms of mass percentage, the range of the content of acrylonitrile blocks is 20% to 80%. The described diaphragm has excellent mechanical strength, cold resistance, and resilience, and has high damping performance.

公开(公告)号：US20240040319A1

公开(公告)日：2024-02-01

申请号：US18264256

申请日：2021-08-25

Applicant: GOERTEK INC.

Inventor： Quanquan PAN ,  Fengguang LING ,  Chun LI

IPC: H04R9/02 ,  H04R9/06

CPC classification number: H04R9/025 ,  H04R9/06

Abstract: Disclosed is a sound generating device. The sound generating device includes a sound generating unit, a plurality of magnetic sound-absorbing particles, and a housing having a cavity, wherein the sound generating unit is accommodated in the cavity, and the sound generating unit divides the cavity into a front cavity and a rear cavity, and the magnetic sound-absorbing particles are filled in the front cavity and/or the rear cavity, and a magnetic attraction force is exerted between the a plurality of magnetic sound-absorbing particles. In the disclosure, magnetic sound-absorbing particles are used to achieve a virtual increase effect in a resonance space of the acoustic rear cavity of the sound generating device, the magnetic sound-absorbing particles attract each other and attached together, thereby restricting the free flow between the particles, reducing the phenomenon that the magnetic sound-absorbing particles break, and effectively protecting the acoustic performance of the sound generating device.

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.