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    STEEL CORD AND ELASTIC TRACK USING SAME
    1.
    发明授权
    STEEL CORD AND ELASTIC TRACK USING SAME 有权
    钢丝绳和弹性轨道使用相同

    公开(公告)号：EP2952627B1

    公开(公告)日：2018-01-17

    申请号：EP14754227.8

    申请日：2014-02-03

    申请人： Sumitomo Rubber Industries, Ltd. ,  Tokusen Kogyo Co., Ltd

    发明人： NISHIMURA Akihiro ,  YOSHIDA Satoshi

    IPC分类号： D07B1/06

    CPC分类号： D07B1/0693 ,  B62D55/244 ,  D07B1/0613 ,  D07B1/062 ,  D07B1/0626 ,  D07B2201/1076 ,  D07B2201/2006 ,  D07B2201/202 ,  D07B2201/2029 ,  D07B2201/2051 ,  D07B2201/2061 ,  D07B2201/2068 ,  D07B2801/24 ,  D07B2801/14

    摘要： A steel cord is configured so that, when the steel cord is used as a tensile cord for an elastic crawler, a center-core dislocation and the earl y breakage of the wi res of a core are prevented. A steel cord comprises: a core which comprises a single core strand, and a sheath which is formed by twisting together six sheath strands arranged around the core. The core strand has a layer-twisted structure comprising: a center-core portion which is formed by twisting three core wires together; and an external layer portion which is formed by twisting together eight to nine core wires arranged around the center-core portion. The sheath strands each have either a bundle twisted structure which is formed by twisting twelve to nineteen sheath wires or a multi-layer twisted structure which is formed by twisting twelve to nineteen sheath wires in layers. The diameter (dc) of the core wires is greater than the diameter (ds) of the sheath wi res. The average gap (Gc) between the core wi res of the external layer portion is 0.015 mm or greater, and the average gap (Gs) between the sheath strands is 0.1 mm or greater.

    STEEL CORD AND ELASTIC TRACK USING SAME
    3.
    发明公开
    STEEL CORD AND ELASTIC TRACK USING SAME 有权
    钢丝绳和灵活曲目顺序

    公开(公告)号：EP2952627A4

    公开(公告)日：2016-10-05

    申请号：EP14754227

    申请日：2014-02-03

    申请人： SUMITOMO RUBBER IND ,  TOKUSEN KOGYO KK

    发明人： NISHIMURA AKIHIRO ,  YOSHIDA SATOSHI

    IPC分类号： D07B1/06

    CPC分类号： D07B1/0693 ,  B62D55/244 ,  D07B1/0613 ,  D07B1/062 ,  D07B1/0626 ,  D07B2201/1076 ,  D07B2201/2006 ,  D07B2201/202 ,  D07B2201/2029 ,  D07B2201/2051 ,  D07B2201/2061 ,  D07B2201/2068 ,  D07B2801/24 ,  D07B2801/14

    摘要： A steel cord is configured so that, when the steel cord is used as a tensile cord for an elastic crawler, a center-core dislocation and the earl y breakage of the wi res of a core are prevented. A steel cord comprises: a core which comprises a single core strand, and a sheath which is formed by twisting together six sheath strands arranged around the core. The core strand has a layer-twisted structure comprising: a center-core portion which is formed by twisting three core wires together; and an external layer portion which is formed by twisting together eight to nine core wires arranged around the center-core portion. The sheath strands each have either a bundle twisted structure which is formed by twisting twelve to nineteen sheath wires or a multi-layer twisted structure which is formed by twisting twelve to nineteen sheath wires in layers. The diameter (dc) of the core wires is greater than the diameter (ds) of the sheath wi res. The average gap (Gc) between the core wi res of the external layer portion is 0.015 mm or greater, and the average gap (Gs) between the sheath strands is 0.1 mm or greater.

    STEEL CORD, RUBBER-STEEL CORD COMPOSITE AND TIRE
    6.
    发明公开
    STEEL CORD, RUBBER-STEEL CORD COMPOSITE AND TIRE 有权
    Reifen mit einem Stahlkordfüroberseitige Reifenarmierung

    公开(公告)号：EP1985748A1

    公开(公告)日：2008-10-29

    申请号：EP07708182.6

    申请日：2007-02-07

    申请人： Bridgestone Corporation

    发明人： IKEHARA, Kiyoshi

    IPC分类号： D07B1/06 ,  B60C9/00 ,  B60C9/20 ,  B60C9/22

    CPC分类号： B60C9/22 ,  B60C9/0007 ,  B60C9/2006 ,  D07B1/0613 ,  D07B1/0626 ,  D07B1/0633 ,  D07B2201/1004 ,  D07B2201/1032 ,  D07B2201/1044 ,  D07B2201/1076 ,  D07B2201/202 ,  D07B2201/2021 ,  D07B2201/2023 ,  D07B2201/2024 ,  D07B2201/204 ,  D07B2201/2059 ,  D07B2401/208 ,  D07B2501/2046 ,  D07B2801/12

    摘要： A steel cord that is especially useful for reinforcing a crown portion of a tire is provided. In particular, a steel cord free from manufacturing problems existed in the conventional art and allowing for stable quality and good production efficiency is provided, and a rubber-steel cord composite and a tire that are equipped with the same are provided.
    A steel cord has a multiple-twist structure including N (N = 2 to 8) strands 2 that are twisted together, each strand 2 having a plurality of wires 1 that are twisted together. When the diameter of each strand is denoted by d (mm), the diameter of a circle circumscribing the cord is denoted by D (mm), and the twisting pitch of the cord is denoted by P (mm), ε c defined by the following expression, ε c = √(-b/2 + √(b 2 /4 - c)) - 1 (where b denotes -1+π 2 (-4R 2 +d 2 )/P 2 , c denotes π 2 d 2 k(4π 2 R 2 +P 2 )/P 4 , R denotes (D-d)/2, and k denotes tan 2 (π/2-π/N) satisfies ε c ≥0.005.

    摘要翻译： 提供了特别可用于加强轮胎胎冠部分的钢丝帘线。 特别地，在传统技术中存在没有制造问题的钢丝帘线，并且提供了稳定的质量和良好的生产效率，并且提供了配备有它们的橡胶 - 钢帘线复合材料和轮胎。 钢丝帘线具有扭绞在一起的N（N = 2〜8）股2的多捻结构，每股2具有多根捻合在一起的线1。 当每条线的直径用d（mm）表示时，用绳索表示的圆的直径由D（mm）表示，帘线的扭转间距用P（mm）表示，μc由 以下表达式为μc =š（-b / 2 +š（b 2/4-c））-1（其中b表示-1 + -2（-4R 2 + d 2）/ P 2，c表示2 d 2 k（4-2 R 2 + P 2）/ P 4，R表示（Dd）/ 2，k表示tan 2（À/ 2-ñ/ N）满足μc‰¥0.005。