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    WATERPROOF SOUND-TRANSMITTING MEMBER AND ELECTRONIC DEVICE PROVIDED THEREWITH
    1.
    发明申请
    WATERPROOF SOUND-TRANSMITTING MEMBER AND ELECTRONIC DEVICE PROVIDED THEREWITH 有权

    公开(公告)号：US20210176550A1

    公开(公告)日：2021-06-10

    申请号：US16761367

    申请日：2018-11-07

    Applicant: NITTO DENKO CORPORATION

    Inventor： Yosuke SUGAYA ,  Bunta HIRAI ,  Takeo INOUE

    IPC: H04R1/08 ,  H04R1/44 ,  H04M1/03

    Abstract: The waterproof sound-transmitting member of the present disclosure includes: a waterproof sound-transmitting membrane configured to prevent entry of water while permitting sound to pass therethrough, and a support layer joined to a main surface of the waterproof sound-transmitting membrane. The waterproof sound-transmitting membrane has an air permeability of 10,000 seconds/100 mL or more as expressed by Gurley number, the support layer includes a resin foam material and has a through hole extending in a thickness direction thereof and serving as a path for sound transmitted through the waterproof sound-transmitting membrane, and a side air permeability of the support layer between the through hole and an outer peripheral side surface of the support layer when the support layer is compressed in the thickness direction thereof at a compression ratio of 20% is 0.1 mL/(min·mm3) or more as a value per unit volume of the support layer.

    WATERPROOF MEMBER AND ELECTRONIC DEVICE
    4.
    发明申请
    WATERPROOF MEMBER AND ELECTRONIC DEVICE 有权

    公开(公告)号：US20210067851A1

    公开(公告)日：2021-03-04

    申请号：US16957543

    申请日：2018-12-28

    Applicant: NITTO DENKO CORPORATION

    Inventor： Tamao FUKUSHIMA ,  Yosuke SUGAYA ,  Bunta HIRAI ,  Yuichi ABE

    IPC: H04R1/02 ,  B01D69/10 ,  B01D69/02 ,  B01D71/36 ,  B01D53/26 ,  B32B5/02 ,  B32B27/32 ,  B32B7/12 ,  B32B27/12

    Abstract: The waterproof member of the present disclosure is a waterproof member comprising a waterproof membrane configured to prevent entry of water while permitting sound and/or gas to pass therethrough, and a support layer having air permeability in a thickness direction thereof, wherein the member has a joining region where the waterproof membrane and the support layer are joined, and a non-joining region where the waterproof membrane and the support layer are spaced apart from each other, the non-joining region is surrounded by the joining region when viewed in a direction perpendicular to a main surface of the waterproof membrane, and a thickness of the support layer in the non-joining region is less than 100 μm. The waterproof member of the present disclosure is, for example, a waterproof sound-transmitting member including a waterproof sound-transmitting membrane and a support layer for the membrane and having improved sound transmission characteristics.

    BUFFER MATERIAL AND SEALING MATERIAL
    5.
    发明申请
    BUFFER MATERIAL AND SEALING MATERIAL 审中-公开
    缓冲材料和密封材料

    公开(公告)号：US20140287222A1

    公开(公告)日：2014-09-25

    申请号：US14205736

    申请日：2014-03-12

    Applicant: NITTO DENKO CORPORATION

    Inventor： Bunta HIRAI ,  Takayuki IWASE

    IPC: C08L23/16 ,  C09J7/02

    CPC classification number: C08L23/16 ,  C08J9/0023 ,  C08J9/0028 ,  C08J9/103 ,  C08J2201/026 ,  C08J2201/03 ,  C08J2203/04 ,  C08J2323/16 ,  C09J7/26 ,  C09J2409/006 ,  Y10T428/249983

    Abstract: A buffer material is obtained by foaming a rubber composition containing an ethylene-propylene-diene rubber. In the buffer material, the content ratio of a sulfur atom calculated based on the measurement result of a fluorescent X-ray measurement, based on mass, is 1000 ppm or less, the buffer material has a 50% compressive load value of 0.1 N/cm2 or more and 2.0 N/cm2 or less, and the buffer material has a stress relaxation rate in a compressed state of 50% after 10 seconds of compression of 60% or more.

    Abstract translation: 通过使含有乙烯 - 丙烯 - 二烯橡胶的橡胶组合物发泡来获得缓冲材料。 在缓冲材料中，基于质量，基于荧光X射线测量的测量结果计算的硫原子的含量比为1000ppm以下，缓冲材料的压缩载荷值为0.1N / cm2以上且2.0N / cm 2以下，缓冲材料在压缩10秒后的压缩状态为50％以上的应力松弛率为60％以上。

    PROTECTIVE COVER MEMBER AND MEMBER SUPPLYING SHEET INCLUDING THE SAME
    6.
    发明申请
    PROTECTIVE COVER MEMBER AND MEMBER SUPPLYING SHEET INCLUDING THE SAME 有权

    公开(公告)号：US20220266575A1

    公开(公告)日：2022-08-25

    申请号：US17626334

    申请日：2020-07-03

    Applicant: NITTO DENKO CORPORATION

    Inventor： Yuichi ABE ,  Tomohiro KONTANI ,  Takeo INOUE ,  Bunta HIRAI

    IPC: B32B27/08 ,  B32B7/12 ,  B32B27/32 ,  B32B27/28

    Abstract: A protective cover member includes a laminate including: a protective membrane having a shape configured to cover an opening when the protective cover member is placed on the face of an object; a substrate film joined to the protective membrane; and a first adhesive layer configured to fix the protective cover member to the face, wherein an outer peripheral surface of the protective cover member has a step in a laminating direction of the laminate, a first portion of the protective cover member protrudes at the step more outward than a second portion of the protective cover member does when the protective cover member is placed on the face, the first portion being positioned farther from the face than the step, the second portion being positioned closer to the face than the step, and the protective membrane and the substrate film are positioned in the first portion.

    WATERPROOF SOUND TRANSMISSON STRUCTURE, AND ELECTRONIC DEVICE AND ELECTRONIC DEVICE CASE INCLUDING SAME
    7.
    发明申请
    WATERPROOF SOUND TRANSMISSON STRUCTURE, AND ELECTRONIC DEVICE AND ELECTRONIC DEVICE CASE INCLUDING SAME 审中-公开

    公开(公告)号：US20180035203A1

    公开(公告)日：2018-02-01

    申请号：US15552901

    申请日：2016-02-22

    Applicant: NITTO DENKO CORPORATION

    Inventor： Bunta HIRAI ,  Satoru FURUYAMA ,  Masaaki MORI ,  Hajime YAMAMOTO

    IPC: H04R1/44 ,  H05K5/02 ,  H04R1/02

    Abstract: A waterproof sound transmission structure of the present disclosure includes: a wall separating a first space from a second space where water can be present, the wall being provided with a sound transmission port for transmission of sound between the first and second spaces; and a waterproof sound-permeable membrane placed to cover the sound transmission port, the waterproof sound-permeable membrane being adapted to permit transmission of sound between the first and second spaces and being further adapted to prevent ingress of water from the second space into the first space through the sound transmission port. The first space is sealed when the second space is filled with water, the sealed first space having a volume of 300 mm3 or less. The waterproof sound transmission structure of the present disclosure has higher levels of both waterproofness and sound permeability than conventional waterproof sound transmission structures.

    WATERPROOF MEMBER AND ELECTRONIC DEVICE
    9.
    发明申请
    WATERPROOF MEMBER AND ELECTRONIC DEVICE 有权

    公开(公告)号：US20210092499A1

    公开(公告)日：2021-03-25

    申请号：US17040146

    申请日：2019-12-25

    Applicant: NITTO DENKO CORPORATION

    Inventor： Tamao FUKUSHIMA ,  Bunta HIRAI ,  Yosuke SUGAYA ,  Yuichi ABE

    IPC: H04R1/02 ,  G06F1/16 ,  H05K5/00 ,  G10K11/18

    Abstract: The waterproof member of the present disclosure includes a waterproof membrane configured to prevent entry of water while permitting sound and/or gas to pass therethrough, and a support layer having air permeability in a thickness direction thereof. The waterproof member has a joining region where the waterproof membrane and the support layer are joined, and a non-joining region where the waterproof membrane and the support layer are spaced apart from each other. The non-joining region is surrounded by the joining region when viewed in a direction perpendicular to a main surface of the waterproof membrane. A thickness of the support layer in the non-joining region is 500 μm or less. A spacing distance between the waterproof membrane and the support layer in the non-joining region is 150 μm or less. An air resistance in an in-plane direction of the support layer is greater than 80,000 seconds/100 mL.

    ACOUSTIC RESISTOR, ACOUSTIC RESISTOR MEMBER INCLUDING SAME, AND AUDIO DEVICE INCLUDING SAME
    10.
    发明申请
    ACOUSTIC RESISTOR, ACOUSTIC RESISTOR MEMBER INCLUDING SAME, AND AUDIO DEVICE INCLUDING SAME 审中-公开

    公开(公告)号：US20180020284A1

    公开(公告)日：2018-01-18

    申请号：US15552947

    申请日：2016-02-22

    Applicant: NITTO DENKO CORPORATION

    Inventor： Bunta HIRAI ,  Satoru FURUYAMA ,  Masaaki MORI ,  Hajime YAMAMOTO

    IPC: H04R1/28 ,  H04R1/10

    CPC classification number: H04R1/2811 ,  H04R1/10 ,  H04R1/28 ,  H04R1/2823 ,  H04R1/2869

    Abstract: An acoustic resistor for use in an audio device includes a resin film having air permeability in a thickness direction of the resin film, and the resin film is a non-porous film having through holes formed to extend straight through the resin film in the thickness direction. This acoustic resistor is used in an audio device including: a transducing part that performs conversion between sound and an electrical signal and that includes an acoustic element; a housing enclosing the transducing part and having at least one opening; and a passage for gas that is present inside the housing and communicates with the opening and in which the acoustic element is placed. The acoustic resistor is placed between the opening and the acoustic element in the passage. The variation in properties of the acoustic resistor of the present disclosure can be made smaller than that of conventional acoustic resistors.

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