Provided is a pneumatic radial tire having a belt cover layer made of an organic fiber cord, which can improve durability while effectively reducing road noise. A belt layer 7 disposed on the outer peripheral side of a carcass layer 4 in a tread part 1 is configured by a steel cord 7C having a 1*M structure including M wires 7s, the number M of the wires 7s is set to 1 to 6, the tensile elastic modulus of the steel cord 7C under a load of 5-50 N is set to 130 GPa or more, the steel cords 7C are arranged to be inclined with respect to a tire circumferential direction so as to intersect with each other between the belt layers 7, a belt cover layer 8 disposed on the outer peripheral side of the belt layer 7 is configured by an organic fiber cord having an elongation of 2.0% to 4.0% under a load of 2.0 cN/dtex, and the organic fiber cord is spirally wound along the tire circumferential direction.

    本发明提供具备由有机纤维帘线构成的带束覆盖层、并能够在有效地降低路面噪声的同时提高耐久性的充气子午线轮胎。将配置于胎面部1的胎体层4的外周侧的带束层7由具有由M根线材7s构成的1×M构造的钢帘线7C构成,使线材7s的根数M为1根~6根,将钢帘线7C的5N~50N负荷时的拉伸弹性模量设定为130GPa以上,将钢帘线7C以在带束层7的层间相互交叉的方式相对于轮胎周向倾斜地排列,将配置于带束层7的外周侧的带束覆盖层8由2.0cN/dtex负荷时的伸长率为2.0%~4.0%的有机纤维帘线构成,将该有机纤维帘线沿着轮胎周向呈螺旋状卷绕。


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    Titel :

    PNEUMATIC RADIAL TIRE


    Weitere Titelangaben:

    充气子午线轮胎


    Beteiligte:
    SUZUKI ASUKA (Autor:in) / HARIKAE SHINYA (Autor:in)

    Erscheinungsdatum :

    03.09.2021


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen



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