Inflatable tyre

A technology of pneumatic tires and tires, which is applied to tire parts, tire treads/tread patterns, transportation and packaging, etc. It can solve problems such as difficulties and achieve the effects of suppressing partial wear, good off-road driving performance, and reducing impact noise

Active Publication Date: 2010-01-20
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is extremely difficult to reduce tread noise while maintaining off-road driving performance.

Method used

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  • Inflatable tyre
  • Inflatable tyre

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0028]The tires of Comparative Examples 1 to 3 and Examples 1 to 7 were manufactured respectively, and the tire size was 285 / 60R18. A block row consisting of a plurality of block portions consisting of two main grooves zigzagging on both sides of the flat portion and extending in the tire circumferential direction, and a plurality of lug grooves connecting these main grooves Each block of the block row is divided into a central side block portion and an outer block portion by thin grooves extending in the tire circumferential direction, and these central side block portions and outer block portions are arranged to face The shorter block side facing the pattern groove is relatively staggered along the extension direction of the thin groove, and the ratio (%) of the staggered amount S to the length L of the block side, the inclination angle α (° ), the ratio (%) of the groove width W of the narrow groove to the ground width TCW, and the ratio (%) of the block side length Ls to t...

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Abstract

The invention provides a pneumatic tire, which reduces noise of tire pattern and keeps high travel performances. The pneumatic tire comprises a consecutive plane part in centre of the tire surface and module part composed of plenty of modules. The modules are divided by two main grooves of Z shape on both side of the tire and plenty of pattern grooves between the two main grooves, wherein, narrow grooves whose inclination angle is 5-12 DEG and width is 2%-4% of grounding width divides the modules to centre module parts and side module parts, and the centre module parts and side module parts are opposite to short edge of the pattern grooves and stagger to the narrow grooves.

Description

technical field [0001] The present invention relates to a pneumatic tire suitable for off-road running, and more particularly to a pneumatic tire capable of reducing tread pattern noise while maintaining off-road running performance. Background technique [0002] Conventionally, pneumatic tires mounted on four-wheel drive vehicles have been required to have good off-road running performance represented by running performance on mud, snow, and sand. In this pneumatic tire, by increasing the ratio of the groove area of ​​the tread portion, it is possible to secure running performance on mud and snow, and by increasing the length of the block portion in the tire circumferential direction, it is possible to ensure running performance on sandy ground. However, If the groove area ratio is set to be large, it will be a factor that deteriorates the noise performance, especially the tread pattern noise (for example, refer to Patent Document 1). [0003] That is to say, when the groo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C11/117B60C11/12B60C11/04
Inventor 广濑克己
Owner THE YOKOHAMA RUBBER CO LTD
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