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Pneumatic tire

A technology of pneumatic tires and tires, which is applied in the direction of pneumatic tires, reinforcement layers of pneumatic tires, special tires, etc. It can solve the problems of not being able to fully ensure performance and difficult to balance performance in a high-dimensional way, and achieve both wet performance and dry performance. Effects of improving wet performance and increasing tread rigidity

Active Publication Date: 2017-05-31
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in recent years, due to the impact of the high performance of vehicles and the continuous development of road repairs, the demand for high vehicle speeds has gradually increased. Accordingly, in the conventional tread pattern structure, especially when driving at high speeds, it began to be difficult. Taking these properties into account in a high-dimensional way
In addition, even in a severe driving environment such as loop driving, it is necessary to balance these performances in a high-dimensional manner, so the conventional tread pattern structure cannot sufficiently ensure these performances.

Method used

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  • Pneumatic tire
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  • Pneumatic tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0056] In tire size 285 / 35ZR20, with figure 1 In the tires with the reinforced structure exemplified in Table 1-2, the tread pattern, narrow grooves, and groove widths of the first to third main grooves (for the narrow grooves, relative to the first main grooves) The ratio of the grooves is also described), the distance between the narrow groove and the first main groove to the third main groove from the tire equator (ratio to the half-width TL / 2 of the ground contact width), the tire width direction length of the sipes L0 (ratio to the ground contact width TL), tire width direction length L0a (ratio to the width of the first rib) of the portion of the sipe groove on the first rib side, the second rib side Conventional Example 1, Comparative Examples 1 to 2, and Examples 1 to 14 of the length in the tire width direction (ratio to the width of the first rib), the shape of the sipes, and the radius of curvature of the sipes 17 types of pneumatic tires.

[0057] In addition, i...

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Abstract

Provided is a pneumatic tire with which high levels of wet performance, dry performance, uneven wear resistance performance, and noise performance can be achieved with good balance. One narrow groove 10 that extends in a tire circumferential direction and has a groove width of 1-6 mm is provided at a position in a tread portion 1, said position being further to the vehicle outside than a tire equator CL position, and a plurality of lug grooves 30, which intersect with the narrow groove 10 and of which both ends are closed, are provided in the tread portion 1, said lug grooves 30 being curved toward one side in the tire circumferential direction.

Description

technical field [0001] The present invention relates to a pneumatic tire, and more specifically relates to a pneumatic tire capable of balancing wet performance, dry performance, uneven wear resistance and noise performance in a high-dimensional and balanced manner. Background technique [0002] Conventionally, in pneumatic tires, high-dimensional and well-balanced improvement of dry performance (e.g., driving stability on dry roads, travel time) and wet performance (e.g., driving stability on wet roads, water skid resistance) has been required. . Furthermore, in addition to these performances, it is also required to simultaneously improve tire wear (particularly partial wear) and noise (for example, passing noise). [0003] For example, as a method of improving wet performance among these performances, a method of arranging a plurality of grooves in the tread portion of a pneumatic tire to improve drainage is known. However, if the grooves are simply added, the tread rigi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/03B60C5/00B60C11/13
CPCB60C11/1392B60C11/0304B60C2011/0388B60C11/032B60C2011/0353B60C2200/04B60C2011/0381B60C2011/0393B60C2011/039B60C11/03B60C11/13B60C2011/0341B60C2011/0348B60C1/0008B60C1/0016B60C9/18B60C11/0302
Inventor 市村彰宏
Owner THE YOKOHAMA RUBBER CO LTD