公开(公告)号：US12143791B2

公开(公告)日：2024-11-12

申请号：US17767561

申请日：2019-12-25

Applicant: Goertek Inc.

Inventor： Weifeng Peng ,  Fengguang Ling ,  Chun Li ,  Chunfa Liu

IPC: H04R7/04 ,  C08J5/04 ,  C08J7/04 ,  C08K3/06 ,  C08K5/00 ,  C08K5/40

Abstract: Provided is a vibrating diaphragm of a sound-producing apparatus. The vibrating diaphragm includes at least one elastomer layer, wherein the elastomer layer is made from polysulfide rubber; the polysulfide rubber is any one of type A polysulfide rubber, type FA polysulfide rubber and type ST polysulfide rubber, and a molecular weight of the polysulfide rubber is 1000-500000.

公开(公告)号：US20240121552A1

公开(公告)日：2024-04-11

申请号：US17767517

申请日：2019-12-24

Applicant: Goertek, Inc.

Inventor： Bing Hui ,  Fengguang Ling ,  Chun Li ,  Chunfa Liu

IPC: H04R1/28 ,  C08F222/30 ,  C08K3/04 ,  C08L9/02

CPC classification number: H04R1/2811 ,  C08F222/30 ,  C08K3/04 ,  C08L9/02 ,  H04R2201/029

Abstract: The present disclosure provides a vibrating diaphragm for a miniature sound-producing device and the miniature sound-producing device. The vibrating diaphragm is made of nitrile rubber; the nitrile rubber is prepared by performing cross-linking polymerization on polyacrylonitrile as a polymerization main monomer and a crosslinking monomer which is polybutadiene, and the content of a polyacrylonitrile block of the polymerization main monomer in the nitrile rubber is 10 to 70 wt %. The vibrating diaphragm provided by the present disclosure has more excellent structural stability, anti-polarization capability and low frequency sensitivity. The miniature sound-producing device provided by the present disclosure has more excellent acoustic performance.

公开(公告)号：US11800288B2

公开(公告)日：2023-10-24

申请号：US17619049

申请日：2020-04-21

Applicant: Goertek inc.

Inventor： Shuqiang Wang ,  Bing Hui ,  Fengguang Ling ,  Chun Li ,  Chunfa Liu

IPC: H04R7/12 ,  B32B25/14 ,  H04R9/02 ,  H04R9/06 ,  H04R31/00 ,  B32B7/022 ,  B32B25/04 ,  C08J5/18

CPC classification number: H04R7/125 ,  B32B7/022 ,  B32B25/042 ,  B32B25/14 ,  C08J5/18 ,  H04R9/025 ,  H04R9/06 ,  H04R31/003 ,  B32B2250/248 ,  B32B2307/306 ,  B32B2307/51 ,  B32B2307/536 ,  B32B2307/54 ,  B32B2307/554 ,  B32B2307/5825 ,  B32B2307/732 ,  B32B2457/00 ,  C08J2323/16 ,  H04R2307/025

Abstract: Disclosed are a diaphragm for a sound generating device and a sound generating device. The diaphragm comprising at least one elastomer layer, wherein the elastomer layer is made of an ethylene propylene diene monomer; and the ethylene propylene diene monomer is formed by polymerizing three monomers, the three monomers being an ethylene monomer, a propylene monomer and a non-conjugated diene monomer respectively, a mass ratio of the ethylene monomer to the propylene monomer ranging from 0.25 to 4, and content of the non-conjugated diene monomer being 1%-15% of total content of the ethylene monomer and the propylene monomer. The ethylene propylene diene monomer has excellent high-temperature resistance and thermo-oxidative aging resistance; and after the rubber is made into the diaphragm, the diaphragm is capable of working in a high-temperature environment for a long time, maintaining not only excellent elasticity but also excellent anti-fatigue characteristic, thereby possessing excellent reliability.

公开(公告)号：US20220369037A1

公开(公告)日：2022-11-17

申请号：US17618976

申请日：2020-04-21

Applicant: Goertek Inc.

Inventor： BING HUI ,  Shuqiang Wang ,  Fengguang Ling ,  Chun Li ,  Chunfa Liu

IPC: H04R7/12 ,  H04R7/06 ,  C08L15/00 ,  C08J3/24

Abstract: Disclosed are a diaphragm for a sound generating device and a sound generating device. The vibration diaphragm comprises at least one elastomer layer, wherein the elastomer layer is made of a hydrogenated nitrile butadiene rubber polymer; and the hydrogenated nitrile butadiene rubber polymer comprises acrylonitrile blocks, content of the acrylonitrile blocks in the hydrogenated nitrile butadiene rubber polymer ranging from 10 wt % to 70 wt %, a vulcanizing agent is added into the hydrogenated nitrile butadiene rubber polymer, and content of the vulcanizing agent is 1% to 15% of total content of the hydrogenated nitrile butadiene rubber polymer. The diaphragm of the present disclosure has excellent resilience, maintains high elasticity in a low-temperature environment and is capable of long-time working in a high-temperature environment, therefore enabling the sound generating device to be applied in an extremely severe environment while keeping its acoustic performance in an excellent state.