公开(公告)号：US20220182762A1

公开(公告)日：2022-06-09

申请号：US17614264

申请日：2020-04-20

Applicant: Goertek Inc.

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

IPC: H04R7/02

Abstract: Disclosed are a diaphragm for a miniature sound-generating device, wherein the diaphragm is made of a polyacrylate copolymer, a reinforcing agent is mixed in the polyacrylate copolymer, the polyacrylate copolymer is 100 parts by mass, and the reinforcing agent comprises at least one of carbon black, silicon dioxide, calcium carbonate and barium sulphate, and is 1-90 parts by mass. The diaphragm provided in the disclosure possesses excellent sound performance.

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.