To provide a tire retaining plunger durability and durability of a belt end portion, and furthermore having light weight, and improved in steering stability.SOLUTION: A tire 100 is provided, including: a first belt layer 60 and a second belt layer 60B arranged in a tread portion 30; and belt reinforcing layers 70A, 70B arranged in a tire diameter direction outside, of the first and the second belt layer, wherein: each of the reinforcing material of the first belt layer 60 and the second belt layer 60B is a metal monofilament having a filament diameter d of 0.30 mm or more; each of the reinforcing material of the belt reinforcing layers 70A, 70B is an organic fiber cord having a cutting strength of 6.5 cN/dtex or more, a breaking elongation of 10% or more, and an elastic modulus at 7% elongation of 6.0 mN/(dtex %) or more; and a shortest distance a between the metal monofilaments of the second belt layer 60B and the first belt layer 60A in a tire center portion, and a shortest distance b between the metal monofilament of the end portion of the second belt layer 60B and the metal monofilament of the first belt layer 60A satisfy the relation of 1.8≤b/a≤4.0.SELECTED DRAWING: Figure 1

    【課題】プランジャー耐久性及びベルト端部の耐久性を維持しつつ、軽量で、操縦安定性を向上させたタイヤの提供。【解決手段】トレッド部30に配置した第1ベルト層60A及び第2ベルト層60Bと、そのタイヤ径方向外側に配置したベルト補強層70A,70Bとを具え、第1ベルト層60A及び第2ベルト層60Bの補強材はフィラメント径dが0.30mm以上の金属モノフィラメントで、ベルト補強層70A,70Bの補強材は、切断強度が6.5cN/dtex以上、切断伸度が10%以上且つ7%伸長時の弾性率が6.0mN/(dtex・%)以上の有機繊維コードで、タイヤセンター部における第2ベルト層60B及び第1ベルト層60Aの金属モノフィラメント間の最短距離aと、第2ベルト層60Bの端部の金属モノフィラメントと第1ベルト層60Aの金属モノフィラメントとの最短距離bとが1.8≦b/a≦4.0の関係を満たす、タイヤ100である。【選択図】図1


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    Titel :

    TIRE


    Weitere Titelangaben:

    タイヤ


    Beteiligte:
    MATSUMOTO KYOHEI (Autor:in) / WU QIAN (Autor:in)

    Erscheinungsdatum :

    2023-12-07


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen



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