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    • 4. 发明公开
    • BANDE DE ROULEMENT ÉVOLUTIVE
    • ENTWICKLUNGSFÄHIGERLAUFSTREIFEN
    • EP2911894A1
    • 2015-09-02
    • EP13779237.0
    • 2013-10-18
    • Compagnie Générale des Etablissements MichelinMICHELIN Recherche et Technique S.A.
    • GAYTON, ChristopheREHAB, HichemDEMAZIERE, Guillaume
    • B60C11/12B60C11/04B60C11/03
    • B60C11/24B60C5/00B60C11/1263B60C11/1281B60C2011/0341B60C2011/0348B60C2011/0351B60C2011/0355B60C2011/1213Y10T152/10027
    • The invention relates to a tread for a tyre of a heavy vehicle, having a wear material thickness PMU, and comprising: at least two main grooves (3, 4) having a depth (P1) similar to, or equal to, the PMU, said main grooves (3, 4) defining a raised element (2); at least one secondary groove (5) having a depth P2 that is shallower than the depth P1 of the main grooves (3, 4), said secondary groove (5) extending in the raised element (2) and having a groove bottom (50), and each main and secondary groove being oriented in a main circumferential or near-circumferential direction corresponding to the mean direction of a flow of liquid in each groove; a plurality of incisions (6) formed in the raised element (2), each of said incisions comprising side parts (61, 62) formed either side of the secondary groove (5), said side parts (61, 62) being interconnected by a connecting part (63), and said connecting part (63) being formed radially towards the inside of the tread from the bottom (50) of the secondary groove (5). Said tread is characterised in that the connecting part (63) comprises an incision portion (630) oriented in the main direction of the secondary groove (5), i.e. forming a maximum angle of 30° with the circumferential direction.
    • 重型车辆胎面的胎面,具有材料PMU的可穿戴厚度,并且具有接近或等于PMU的深度P1的至少两个主槽,限定凸起元件,至少一个深度P2小于深度P1的次级沟槽延伸到整个 凸起元件,并且具有凹槽底部,每个主凹槽和副凹槽沿圆周或近圆周的主方向定向,对应于每个凹槽中的液体的平均流动方向,凸起元件中的多个刀槽花纹,每个 包括形成在所述副槽的每一侧的横向部分,并且通过从所述副槽的底部径向朝向所述胎面的内侧形成的连接部连接,所述连接部具有沿所述副槽的主方向取向的刀槽花纹部 与圆周方向成最多等于30°的角度。