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    Thin-conductor foamed-polyolefin-insulated wire and manufacturing method thereof
    1.
    发明授权
    Thin-conductor foamed-polyolefin-insulated wire and manufacturing method thereof 有权
    薄导体发泡聚烯烃绝缘电线及其制造方法

    公开(公告)号：US6399884B1

    公开(公告)日：2002-06-04

    申请号：US59725600

    申请日：2000-06-19

    Applicant: SUMITOMO ELECTRIC INDUSTRIES

    Inventor： SHUKUSHIMA SATOSHI ,  FUJITA TARO ,  TSUJINO ATSUSHI ,  HIRAKAWA YOSHIHIRO ,  SANO MASATO ,  OOTSUKA HIROYUKI

    IPC: H01B3/44 ,  H01B3/00

    CPC classification number: H01B3/441

    Abstract: A foamed-polyolefin-insulated wire having a conductor diameter of 0.4 mm or less and an insulation thickness of 0.8 mm or less and satisfying, an equivalent dielectric constant less than 1.6, the fluctuation limits of the equivalent dielectric constant less than or equal to ±0.1, and conductor stripping force greater than or equal to 100 g/50 mm. Polyolefin including 10 weight % or more of an ionomer is used. Polyolefin having a swelling ratio of 55 % or more is extruded over the conductor to form a foamed insulation layer with a foaming degree of 50 % or more using a chemical foaming agent and/or an inert gas. The wire is suitable for high-speed data transmission.

    Abstract translation: 导体直径为0.4mm以下，绝缘厚度为0.8mm以下且满足小于1.6的等效介电常数的发泡聚烯烃绝缘电线，等效介电常数的波动极限小于或等于± 0.1，导体剥离力大于或等于100g / 50mm。 使用包含10重量％以上离聚物的聚烯烃。 膨胀率为55％以上的聚烯烃在导体上挤出，使用化学发泡剂和/或惰性气体形成发泡度为50％以上的发泡绝缘层。 该线适用于高速数据传输。

    SIGNAL CABLE DEVICE
    3.
    发明专利
    SIGNAL CABLE DEVICE 失效

    公开(公告)号：JPH10247425A

    公开(公告)日：1998-09-14

    申请号：JP6536997

    申请日：1997-03-04

    Applicant: SUMITOMO ELECTRIC INDUSTRIES ,  MOLEX INC

    Inventor： HIRAKAWA YOSHIHIRO ,  HARADA TETSUO ,  NODA ATSUTO ,  AZUCHI SHIGERU

    IPC: H01B11/06 ,  H01B11/00 ,  H01B11/02 ,  H01B11/20

    Abstract: PROBLEM TO BE SOLVED: To provide a signal cable device with a structure capable of connecting the signal cable to an electric connector easily and efficiently, which is generally called IEEE1394. SOLUTION: A signal cable 1 is provided with two sets of twist pair wires 2 covered by external shield bodies 8, a bare conductor 3, and an insulation coating conductor 4 therein. The outside of the twist pair wires 2, the bare conductor 3, and the insulation coating conductor 4 are covered with another external shield body 12 so as to constitute the signal cable 1, at both ends of which electric connectors equipped with shield cases are provided. Two sets of twist pair wires 2, the bare conductor 3, and the insulation coating conductor 4 are connected to the terminals in the electric connector in one to one relationship, and simultaneously the bare conductor 3 is brought into electrical contact with the external shied bodies 8 of the twist pair wires 2 in the signal cable 1 so as to be the same potential, and the other external shield body 12 is caused to be the same potential as the shield case.

    METAL CABLE FOR TRANSMISSION
    5.
    发明专利
    METAL CABLE FOR TRANSMISSION 审中-公开

    公开(公告)号：JP2003234025A

    公开(公告)日：2003-08-22

    申请号：JP2002032951

    申请日：2002-02-08

    Applicant: SUMITOMO ELECTRIC INDUSTRIES

    Inventor： HIRAKAWA YOSHIHIRO ,  ENDO SEIJI ,  TSUJINO ATSUSHI ,  OCHI YUJI

    IPC: H01B7/00 ,  H01B7/17 ,  H01B11/00 ,  H01B11/10 ,  H01B11/12

    Abstract: PROBLEM TO BE SOLVED: To provide a metal cable for transmission, etc., having such structure as dependency of the cable attenuation amount on the frequency in digital transmission is reduced to suppress signal distortion. SOLUTION: A transmission metal cable (1) is covered with an insulator (11) which comprises at least a pair of conductors (10) extending in the prescribed direction and a shield tape (12) which, so arranged as to enclose the conductor (10), comprises a metal layer (120) opposite to the conductor (10). The metal film (120) of the shield tape (12) opposite to the conductor (10) has thickness of 1-10 μm, while thickness of 2-6 μm is preferred. COPYRIGHT: (C)2003,JPO

    SIGNAL CABLE
    6.
    发明专利
    SIGNAL CABLE 失效

    公开(公告)号：JPH1139958A

    公开(公告)日：1999-02-12

    申请号：JP20264697

    申请日：1997-07-14

    Applicant: SUMITOMO ELECTRIC INDUSTRIES

    Inventor： HIRAKAWA YOSHIHIRO ,  HARADA TETSUO

    IPC: H01B11/18

    Abstract: PROBLEM TO BE SOLVED: To reduce attenuation with a limited cable diameter by arranging the respective wires of a signal pair and a power supply pair diagonally in a cable, and covering the whole with electric shields and an insulation outer covering. SOLUTION: Respective wires of a signal pair 2 and a power supply pair 1 arranged diagonally in a cable are covered by shields 4, 5 and an outer covering 3. Preferably, the insulator outside diameter ratio of the signal pair 2 and the power supply pair 1 is any of 1:1, 2:3, 3:2, and the eccentricity of a circumscribing circle ellipse in a cross section when twisting is 0.6 or less. Thereby, a conductor size in a definite cable outside diameter can be large when the impedance of the signal pair 2 is set to a required value. Preferably, the dielectric constants of insulators constituting the insulation coatings of the signal pair 2 and the power supply pair 1 have the ratio of 60 to 100% and the difference of 50% or less. By the control of this arrangement or the dielectric constants of the respective insulators, an electric field distribution in the cable at a signal supply time is stable in a length direction so that a signal attenuation amount is reduced.

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