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    VIBRATION DIAPHRAGM OF SOUND PRODUCING DEVICE AND SOUND PRODUCING DEVICE
    1.
    发明公开
    VIBRATION DIAPHRAGM OF SOUND PRODUCING DEVICE AND SOUND PRODUCING DEVICE 审中-公开

    公开(公告)号：EP3985996A1

    公开(公告)日：2022-04-20

    申请号：EP20823630.7

    申请日：2020-04-21

    申请人： Goertek Inc

    发明人： HUI, Bing ,  WANG, Shuqiang ,  LING, Fengguang ,  LI, Chun ,  LIU, Chunfa

    IPC分类号： H04R7/14

    摘要： 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 10wt% 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. ( Fig.6 )

    DIAPHRAGM FOR SOUND GENERATING DEVICE AND SOUND GENERATING DEVICE
    2.
    发明公开
    DIAPHRAGM FOR SOUND GENERATING DEVICE AND SOUND GENERATING DEVICE 审中-公开

    公开(公告)号：EP3985067A1

    公开(公告)日：2022-04-20

    申请号：EP20822007.9

    申请日：2020-04-21

    申请人： Goertek Inc

    发明人： WANG, Shuqiang ,  HUI, Bing ,  LING, Fengguang ,  LI, Chun ,  LIU, Chunfa

    IPC分类号： C08L23/16 ,  H04R7/12 ,  B32B25/04

    摘要： 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.

    VIBRATING DIAPHRAGM FOR MINIATURE SOUND-PRODUCING DEVICE AND MINIATURE SOUND-PRODUCING DEVICE
    3.
    发明公开
    VIBRATING DIAPHRAGM FOR MINIATURE SOUND-PRODUCING DEVICE AND MINIATURE SOUND-PRODUCING DEVICE 审中-公开

    公开(公告)号：EP3962109A1

    公开(公告)日：2022-03-02

    申请号：EP20794693.0

    申请日：2020-04-20

    申请人： Goertek Inc

    发明人： HUI, Bing ,  LING, Fengguang ,  WANG, Ting ,  LI, Chun ,  LIU, Chunfa

    IPC分类号： H04R7/10 ,  H04R9/06 ,  H04R9/02

    摘要： Disclosed are a diaphragm for a miniature sound-generating device, and a miniature sound-generating device. The diaphragm for a miniature sound-generating device is made of a polyacrylate copolymer, the polyacrylate copolymer is mixed with a plasticizer comprising at least one of aliphatic diacid esters, phthalic acid esters, phenyl polyacid esters, benzoates, polyhydric alcohol esters, chlorinated hydrocarbons, epoxides, citrates and polyesters, the glass transition temperature of the diaphragm is in the range of -70 °C to 0 °C, and the diaphragm is configured such that the adhesive force between the diaphragm and an adhesive layer during assembly is greater than 100 g/25 mm (180° peeling). The diaphragm provided in this disclosure possesses excellent sound performance. ( Fig. 8 )

    MINIATURE SOUND PRODUCTION DEVICE
    4.
    发明公开
    MINIATURE SOUND PRODUCTION DEVICE 审中-公开

    公开(公告)号：EP3962104A1

    公开(公告)日：2022-03-02

    申请号：EP20795730.9

    申请日：2020-04-20

    申请人： Goertek Inc

    发明人： HUI, Bing ,  WANG, Shuqiang ,  LING, Fengguang ,  LI, Chun ,  LIU, Chunfa

    IPC分类号： H04R7/04 ,  H04R7/06 ,  H04R9/06 ,  C08F220/10 ,  C08J5/18

    摘要： Disclosed is miniature sound generating device. The miniature sound generating device comprises a device body and a diaphragm, wherein the diaphragm is arranged in the device body, and the diaphragm is configured to be capable of generating sound by vibration; and the diaphragm is made of a polyacrylate copolymer, the polyacrylate copolymer is prepared by using alkyl acrylate serving as a main polymerization monomer and a cross-linking monomer to be cross-linked and polymerized, a vulcanizing agent is mixed in the polyacrylate copolymer, the polyacrylate copolymer is 100 parts by mass, and the vulcanizing agent is 0.5-5 parts by mass. The miniature sound generating device provided in the present disclosure possesses excellent performance. ( Fig. 8 )

    DIAPHRAGM AND SOUND GENERATING APPARATUS
    9.
    发明公开
    DIAPHRAGM AND SOUND GENERATING APPARATUS 审中-公开

    公开(公告)号：EP4221260A1

    公开(公告)日：2023-08-02

    申请号：EP21871189.3

    申请日：2021-08-25

    申请人： Goertek Inc

    发明人： WANG, Cuicui ,  HUI, Bing ,  LING, Fengguang ,  LI, Chun

    IPC分类号： H04R31/00 ,  H04R7/02 ,  H04R9/06 ,  H04R9/02 ,  C08L53/00

    摘要： 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.