The invention relates to an outer tire of a tire and the tire. The outer tire comprises a tread part and a tire shoulder part, the axial profile of the tread part comprises a highest point and two cambered surface sections arranged on the two sides of the highest point respectively, each cambered surface section comprises a first arc section and a second arc section which are sequentially arranged, and the highest point is located at the end, away from the second arc section, of the first arc section; the ratio of the axial width of the first arc section to the axial width of the cambered surface section is 0.55-0.60; the difference value of the radial heights of the two ends of the first arc section is a first drop amount, the difference value of the radial heights of the two ends of the cambered surface section is a second drop amount, and the ratio of the first drop amount to the second drop amount is 0.35-0.45; the ratio of the first drop amount to the axial width of the cambered surface section is 0.02-0.05; the ratio of the radius of the second arc section to the radius of the first arc section is 0.7-0.9; and the tire shoulder included angle of the tire shoulder part is between 10 degrees and 15 degrees. According to the outer tire of the tire and the tire provided by the invention, tearing damage at the tire shoulder of the outer tire of the tire and abnormal eccentric wear of the tire shoulder can be effectively improved, and the service life of the tire is prolonged.

    本申请涉及一种轮胎的外胎及轮胎,外胎包括胎面部和胎肩部;胎面部的轴向轮廓包括最高点以及两段分别设于最高点两侧的弧面段,弧面段包括依次设置的第一弧段和第二弧段,最高点位于第一弧段远离第二弧段的一端;第一弧段的轴向宽度与弧面段的轴向宽度的比值在0.55‑0.60之间;第一弧段的两端的径向高度的差值为第一落下量,弧面段的两端的径向高度的差值为第二落下量,第一落下量和第二落下量的比值在0.35‑0.45之间;第一落下量和弧面段的轴向宽度的比值在0.02‑0.05之间;第二弧段的半径与第一弧段的半径比值在0.7‑0.9之间;胎肩部的胎肩夹角在10°‑15°之间。本发明所提供的轮胎的外胎及轮胎,能够有效改善轮胎外胎胎肩处撕裂破坏与胎肩的异常偏磨,延长轮胎的使用寿命。


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    Title :

    Outer tire of tire and tire


    Additional title:

    一种轮胎的外胎及轮胎


    Contributors:
    SHI YIYUAN (author) / ZOU JUN (author) / LIN BOHAN (author)

    Publication date :

    2023-05-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen



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