The present invention relates to a tire tread for heavy-duty, hybrid-use vehicles and is intended to improve the durability of the crown of the tire after sticking broken stones in the tread. The tread (1) comprises a recess (3) comprising a radially outer first recessed groove portion (31) having a width W11 on the tread surface (2), a width W12 at the groove bottom (311) and a depth H1, and a radially inner second recessed sipe portion (32) having a width W12 at the groove bottom (311) and a depth H2 at the groove bottom (311). The second recessed sipe portion (32) has a width W2 and a depth H2 and leads to the trench bottom (311) at a distance E from the average surface (S1) of the trench (31). According to the invention, the distance E is at least equal to the width W12 of the trench bottom (311) divided by 6.
本发明涉及一种用于重型、混合用途车辆的轮胎胎面,并旨在在胎面中卡住碎石之后改善轮胎的胎冠的耐久性。胎面(1)包括凹陷部(3),所述凹陷部(3)包括径向外部的第一凹陷沟槽部(31)和径向内部的第二凹陷刀槽部(32),所述第一凹陷沟槽部(31)具有在胎面表面(2)上的宽度W11、沟槽底部(311)处的宽度W12和深度H1,所述第二凹陷刀槽部(32)具有宽度W2和深度H2并相对于沟槽(31)的平均表面(S1)在距离E处通向沟槽底部(311)。根据本发明,距离E至少等于沟槽底部(311)的宽度W12除以6。
Tire tread for heavy vehicles with improved attack resistance
具有改进的耐攻击性的用于重型车辆的轮胎胎面
2023-02-14
Patent
Electronic Resource
Chinese
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |
Tire tread with improved attack resistance for heavy vehicles
European Patent Office | 2023
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