The present invention relates to a reduced weight tire comprising a pair of flexible bead cores (50). In each bead, said bead core (51) has a closed circumferential annulus, fixes the bead of the tyre (1) to the wheel rim (100) and comprises a first portion made of a first material M1 in the form of a textile cord (560), which interacts with a second portion of the bead core made of a reinforcing second material M2. The tensile stiffness of the bead core wire (51) is between 4.5 * 10 < 5 > N/m and 1.8 * 10 < 6 > N/m; the circumferential bending stiffness Kf of the bead core wire (51) is not less than Kr * (1000 * D/(16 * 25.4)) 3, where D is the diameter of the wheel receiving the tire (measured in meter at the base (110) of the wheel rim (100)), Kr is equal to 2.10-2 Nm2; the elastic elongation of the bead core wire (51) is not less than 2%.

    本发明涉及一种包括一对柔性胎圈芯线(50)且减轻重量的轮胎。在每个胎圈内,所述胎圈芯线(51)具有闭合的周向环状、将轮胎(1)的胎圈固定至车轮轮辋(100)并包括由织物帘线(560)形式的第一材料M1制成的第一部分,所述第一部分与胎圈芯线的由增强第二材料M2制成的第二部分相互作用。所述胎圈芯线(51)的拉伸刚度在4.5×105N/m至1.8×106N/m之间;所述胎圈芯线(51)的周向弯曲刚度Kf不小于Kr*(1000*D/(16*25.4))3,其中D是接收轮胎的车轮的直径(在车轮轮辋(100)的基座(110)处测量,以米计),Kr等于2.10‑2Nm2;所述胎圈芯线(51)的弹性伸长不小于2%。


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    Title :

    Tyre comprising pair of flexible bead cores


    Additional title:

    包括一对柔性胎圈芯线的轮胎


    Contributors:

    Publication date :

    2024-06-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen



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