To provide a technology that enables improvement of snow performance of pneumatic tires.SOLUTION: A pneumatic tire has a tread T. The tread T has lands (1, 2, 3) having a tread surface T1, and axial grooves 5 extending in an axial direction AD of a tire on a land and opening on the tread surface T1. The axial grooves 5 include a first part 5A disposed on a tire radially inner side RD2 of the tread surface T1, and a second part 5B disposed from the first part 5A to the tread surface T1 and having a groove width larger than that of the first part 5A. The second part 5B includes a spreading surface 57 extending from an end P1 on a tire radially outer side RD1 of a groove wall 55 constituting the first part 5A to the tread surface T1. The spreading surface 57 has a convex line 6 protruding from the spreading surface 57 and extending linearly.SELECTED DRAWING: Figure 5

    【課題】空気入りタイヤのスノー性能を向上可能にする技術を提供する。【解決手段】空気入りタイヤは、トレッドTを有する。トレッドTは、トレッド表面T1を有する陸(1,2,3)と、陸においてタイヤ軸方向ADに延び且つトレッド表面T1に開く軸方向溝5と、を有する。軸方向溝5は、トレッド表面T1よりもタイヤ径方向内側RD2に配置される第1部位5Aと、第1部位5Aからトレッド表面T1まで配置され且つ第1部位5Aよりも溝幅が大きい第2部位5Bと、を含む。第2部位5Bは、第1部位5Aを構成する溝壁55のタイヤ径方向外側RD1の端P1からトレッド表面T1に至る拡がり面57を含む。拡がり面57は、拡がり面57から突出し且つ線状に延びる凸ライン6を有する。【選択図】図5


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    Titel :

    PNEUMATIC TIRE, MANUFACTURING METHOD OF PNEUMATIC TIRE, AND GROOVE MOLDING MATERIAL


    Weitere Titelangaben:

    空気入りタイヤ、空気入りタイヤの製造方法、溝成型材


    Beteiligte:

    Erscheinungsdatum :

    01.04.2025


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen / B29D PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE , Herstellen besonderer Gegenstände aus Kunststoff oder aus Stoffen in plastischem Zustand



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