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    • 51. 发明专利
    • Tire for heavy load
    • 轮胎重载
    • JP2006312412A
    • 2006-11-16
    • JP2005136394
    • 2005-05-09
    • Sumitomo Rubber Ind Ltd住友ゴム工業株式会社
    • YOSHIKAWA EIMEIMARUOKA KIYOTO
    • B60C15/00
    • B60C15/0027B60C15/04B60C15/06B60C15/0607Y10T152/10819Y10T152/10828Y10T152/10837Y10T152/10846
    • PROBLEM TO BE SOLVED: To provide a tire for heavy load, capable of improving the durability of a bead part. SOLUTION: This tire for heavy load is provided with a carcass ply comprising a steel cord having a main body part ranging from a tread part, through a side wall part, to a bead core and a folding back part which continues into the main body part and of which portion around the bead core is folded back from inside in a tire axial direction toward outside. The folding back part comprises a main part bent along an inner side face in the tire axial direction, an inner face in the tire radial direction and an outer side face in the tire axial direction of the bead core; and an auxiliary part continuing into the main part and extending toward the main body part in the vicinity of the outer face in the tire radial direction of the bead core. Core protection rubber of which complex elastic modulus is 50 to 80 MPa is arranged in a core inside region sandwiched between the inner side face of the bead core and the steel cord of the main part. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种能够提高胎圈部的耐久性的重载轮胎。 解决方案:这种重载轮胎设置有胎体帘布层,该胎体帘布层包括具有主体部分的钢帘线,该帘线具有从胎面部分,通过侧壁部分到胎圈芯部的主体部分和延伸到 主体部分和围绕胎圈芯的部分在轮胎轴向方向上从内侧向外折回。 折回部包括沿轮胎轴向的内侧面,轮胎径向的内面和胎圈芯的轮胎轴向的外侧面弯曲的主体部, 以及辅助部件,其沿着胎圈芯的轮胎径向在外侧面附近延伸到主体部并向主体部延伸。 复合弹性模量为50〜80MPa的芯保护橡胶配置在夹在胎圈芯的内侧面与主体部的钢丝帘线之间的芯部内部区域。 版权所有(C)2007,JPO&INPIT