Provided is a pneumatic tire (22) in which appearance quality, knocking-over resistance, and fitting pressure are adjusted in a balanced manner. The tire (22) includes a pair of bead portions (66) tobe fitted to a rim (R); each bead portion (66) includes a bead (30) having a core (52) and an apex (54); an outer surface (68) of the bead portion (66) includes a seat face (70) and a flange face (72)disposed radially inward and axially outward, respectively, of the bead (30), a heel face (74) disposed between the seat face (70) and the flange face (72), and a plurality of vent lines (78) projecting from the heel face (74) and extending in the circumferential direction; a contour of the heel face (74) is represented by an arc on a cross-section, of the tire (22), taken along a plane includinga rotation axis of the tire (22), and a radius (Rh) of the arc is not less than 8 mm and not greater than 15 mm.

    本发明提供均衡地调整了外观品质、脱圈阻力以及嵌合压力的充气轮胎(22)。该轮胎(22)具备嵌合于轮辋(R)的一对胎圈部(66)。胎圈部(66)包含具备芯部(52)与三角胶(54)的胎圈(30)。胎圈部(66)的外表面(68)具备位于胎圈(30)的径向内侧的座部面(70)、位于胎圈(30)的轴向外侧的凸缘面(72)、位于座部面(70)与凸缘面(72)之间的胎踵面(74)、以及从胎踵面(74)突出并沿周向延伸的多条通气路凸条(78)。在沿着包含轮胎(22)的旋转轴在内的平面剖开的轮胎(22)的断面中,胎踵面(74)的轮廓由圆弧表示,圆弧的半径(Rh)为8mm以上且15mm以下。


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    Titel :

    Pneumatic tire and tire mold


    Weitere Titelangaben:

    充气轮胎以及轮胎用模具


    Beteiligte:
    KUBO HOKUTO (Autor:in)

    Erscheinungsdatum :

    2021-02-26


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen / B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS



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