A radial tire resistant to tire lateral sliding wear

Abstract

The present invention provides a radial tire that resists lateral sliding wear of the tire, comprising a carcass, a tread covering the outermost periphery in the radial direction of the carcass, the tread comprising a crown and a shoulder, and the tread is on the tire. On the cross section of the meridian, the crown profile from the intersection of the tire equatorial plane and the tread profile to the beginning of the shoulder is divided into a first segment of crown arc and a second segment of crown arc, and the outer diameter R1 of the first segment of crown arc is the same as The outer diameter R2 of the second crown arc has a relationship of 1.2≤R1 / R2≤1.6, and the arc length L1 of the first crown arc and the arc length L2 of the first crown arc have 0.8≤L1 / L2≤ 1.8, the drop h of the shoulder on the tire meridian section and the tread width TDW has a relationship of 0.02≤h / TDW≤0.035. The radial tire that resists lateral sliding wear of the tire increases the effective contact area between the tread and the road surface, improves the lateral stiffness of the tread, makes the tread less prone to lateral slip when subjected to lateral force, and reduces lateral wear.

Description

technical field [0001] The invention relates to the technical field of tires, in particular to a radial tire that resists lateral sliding wear of the tire. Background technique [0002] The wear of the tire is caused by the wear of the tread. The wear of the tread is usually caused by the friction between the tread and the road surface under the circumferential and lateral forces of the tire. Fracture failure, forcing the rubber off the tread. During the rolling process, the tire will be subjected to dynamically changing lateral force due to the non-straight driving of the vehicle (such as turning, avoidance, and uneven road surface), resulting in lateral slippage between the tread and the road surface, resulting in lateral wear. [0003] To improve the wear life of tires, generally increase the wear volume of the tires (increase the groove depth, widen the driving surface) to increase the wear of the tires. The negative effects of this are: 1. The weight of the tires incre...

AI Technical Summary

Problems solved by technology

During the rolling process of the tire, due to the non-linear driving of the vehicle (such as turning, avoiding, and uneven road surface), the dynamic lateral force will cause lateral slip between the tread and the road surface, resulting in lateral wear

[0003] To improve the wear life of the tire, generally increase the wear volume of the tire (increase the groove depth, widen the driving surface) to improve the wear of the tire. The negative effects brought about by this are: 1. The weight of the tire increases, the cost of the tire increases and the additional allocation is occupied 2. The increase of the groove depth or the width of the driving surface will increase the rolling resistance of the tire, and the fuel economy will decrease; 3. Due to the increase of the wear volume, the heat dissipation will decrease, and the tire durability will decrease, resulting in tire failure rate increases, which in turn leads to a reduction in the overall service life of the tire

Images