Provided is a heavy duty tire having excellent chipping resistance during high-speed travel. A heavy duty tire has a tread portion having a shoulder portion that is closer to the outside in the axial direction of the tire than a longitudinal main groove disposed on the outermost side in the axial direction of the tire in the circumferential direction of the tire; the tread rubber disposed on the tread portion is formed of a multi-layer structure having a tread rubber layer forming the outer surface of the tread and a base rubber layer disposed on the innermost side in the tire radial direction. The tread rubber layer of the tire shoulder part contains a rubber component including butadiene rubber and carbon black; the thickness (Tc) and complex elastic modulus (Ec ') of the tread rubber layer of the shoulder portion, the thickness (Tb) and complex elastic modulus (Eb') of the base rubber layer of the shoulder portion, and the butadiene rubber content (Bca) in 100% by mass of the rubber component contained in the tread rubber layer satisfy the following expressions (1)-(3): (1) Tb/Tc < = 0.50 (2) Eb '/Ec' < = 0.60 (3) Bca/(Tb/Tc) > = 40.

    本发明提供一种高速行驶时的耐掉块性能优异的重载荷用轮胎。一种重载荷用轮胎,其具有胎面部,其中,胎面部具有比配置在轮胎轴向最外侧的轮胎周向的纵主沟更靠近轮胎轴向外侧的胎肩部;配置于胎面部的胎面橡胶由具有形成胎面外表面的行驶面橡胶层和配置于轮胎径向最内侧的基部橡胶层的多层结构体形成;胎肩部的行驶面橡胶层含有包括丁二烯橡胶的橡胶成分和炭黑;胎肩部的行驶面橡胶层的厚度Tc和复弹性模量Ec’、胎肩部的基部橡胶层的厚度Tb和复弹性模量Eb’、行驶面橡胶层中所含的橡胶成分100质量%中的丁二烯橡胶的含量Bca满足下式(1)~(3)。(1)Tb/Tc≦0.50(2)Eb’/Ec’≦0.60(3)Bca/(Tb/Tc)≧40。


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Heavy duty tire


    Weitere Titelangaben:

    重载荷用轮胎


    Beteiligte:
    OSHIMO MASAKI (Autor:in) / KUSHIMA TAKETO (Autor:in)

    Erscheinungsdatum :

    2023-04-28


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen



    HEAVY DUTY TIRE

    ITO SHUHEI | Europäisches Patentamt | 2024

    Freier Zugriff

    HEAVY DUTY TIRE

    ITO SHUHEI | Europäisches Patentamt | 2024

    Freier Zugriff

    HEAVY DUTY TIRE

    ITO TADASHI / YOSHINO MASAYUKI | Europäisches Patentamt | 2023

    Freier Zugriff

    HEAVY-DUTY TIRE

    WILSON JOHN DAVID / SCHESSLER GREGORY ALAN / SPENCER TODD JAMES et al. | Europäisches Patentamt | 2018

    Freier Zugriff

    HEAVY DUTY TIRE

    OOGANE SHUN | Europäisches Patentamt | 2016

    Freier Zugriff