Tire tread pattern provided with stone guard structure

Abstract

The present invention discloses a tire tread pattern provided with a stone guard structure. The tread pattern is composed of annular grooves consecutive in the circumferential direction and pattern blocks. The annular grooves are defined by inconsecutive first side ridges; the incurvate parts, relative to the first side ridges, in the annular grooves are provided with first polygonal surfaces parallel to the tread; a second side ridge and a third side ridge of each first polygonal surface respectively extend in the trench direction, to form two second polygonal surfaces, and the two second polygonal surfaces and the first polygonal surface share a vertex S; and the bottom lines of the annular grooves are in the shapes of "zigzag" in the circumferential direction. The stone discharging function is mainly reflected in two aspects: on the one hand, the first polygon surfaces parallel to the tread directly play the role of stone discharging, on the other hand, inclined surfaces on the both sides of the annular grooves play the role of stone discharging, as the angles of the inclined surfaces change, it is difficult for stones to be firmly fixed into the inclined surfaces, stones are easily discharged during the running process of tires, so that the tires are guaranteed to have a good stone guard performance.

Description

technical field [0001] The invention belongs to the technical field of tire patterns, and in particular relates to a tire tread pattern provided with an anti-stone structure. Background technique [0002] Pneumatic tires are equipped with circumferential and radial grooves and ground contact parts divided by the grooves on the tread part, so as to form patterns that meet the requirements of tire performance and service conditions. The following problems exist when the tires relax on poor road surfaces such as gravel. The stones enter the tread groove of the pneumatic tire, and the grounding parts are twisted and deformed under load, so the stones are not easy to discharge. Stones of different sizes enter the groove and gradually enter the bottom of the groove, damaging the bottom of the groove and possibly the belt layer, leading to failure and affecting the service life of the tire. [0003] Therefore, the pneumatic tire is equipped with a tread structure to prevent stone...

AI Technical Summary

Problems solved by technology

[0006] However, the above-mentioned stone-proof structure tends to concentrate on the root of the stone-discharging platform during use, and even cut off the stone-discharging platform, causing cracks at the bottom of the ditch, and partially damaging the belt layer, which cannot guarantee that the tire has a better performance. The effect of anti-rock trapping is still high, but there is still the defect that rock trapping affects tire life

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