Running tread incision comprising blocking parts

A technology of sipes and tread patterns, which is applied to tire treads/tread patterns, vehicle parts, transportation and packaging, etc., can solve the problems of reduced stiffness of tread patterns and achieve the effect of maintaining effectiveness

Active Publication Date: 2009-04-01
OCIETE DE TECH MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In contrast, the width of these grooves results in a reduction in the stiffness of the tread pattern when rolling or when subjected to loads tangential to the contact area between the tire and the road surface

Method used

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  • Running tread incision comprising blocking parts
  • Running tread incision comprising blocking parts
  • Running tread incision comprising blocking parts

Examples

Experimental program
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Embodiment Construction

[0023] Figure 1 shows a partial view of a tire tread provided with a sipe according to the invention. In FIG. 1 , the two rubber components 10 , 20 of the tread pattern are separated from each other by a sipe 30 having an average width greater than 1.0 mm. The two rubber components 10 , 20 of the tread pattern have outer surfaces 11 , 21 which come into contact with the road surface during running, these surfaces 11 , 21 forming part of the tread surface of the tread.

[0024] figure 2 and 3 Sectional views of the tread are shown along section planes II-II and III-III, perpendicular to the tread surface and identified in FIG. 1 .

[0025] figure 2 The edges of the main walls 31 , 32 of the sipe 30 in the section plane are shown, said walls 31 , 32 forming an angle α of 5 degrees therebetween. The virtual intersection of these edges is in the thickness of the tread. In an alternative form of the illustrated embodiment, the width of the sipe is 1.6 mm across the tread surfa...

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PUM

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Abstract

The invention concerns a running tread for a tyre comprising multiple incisions (30), each incision being delimited by two opposite main walls (21, 32), each of said walls consisting of a median surface the intersection of which with the running surface forms initially a ridge, the average width of each incision measured as the average distance between the ridges formed by the opposite main walls (31, 32) of said incision on the running surface initially is not less than 1,5 mm, each of the main walls (31, 32) including at least one blocking region co-operating with an opposite blocking region so as to block mechanically relative movements of said walls at least in the tire-road contact.

Description

technical field [0001] The present invention relates to a new shape of the sipe formed in the tread and a molding for molding this type of sipe in the elastic material used for the tread. Background technique [0002] In order to increase the grip of tires mounted on passenger vehicles, especially on roads covered with snow and / or black ice, it is known to place bezels on the tread of the tire (ie the part of the tire that comes into contact with the ground during driving). The cuts generally referred to in the invention are obtained by embossing during the molding and curing operations of the tyre, or alternatively, after said tire has been cured. Among the cuts are sipes, ie spaces separating the two surfaces of the elastomeric material, these spaces typically being less than 3.0 millimeters (mm) in width in the case of passenger vehicle or heavy goods vehicle tires. The width can drop down to zero, that is to say the almost constant contact of the opposing surfaces defin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/12
CPCB60C11/125B60C11/12B60C11/1281B60C11/1218
Inventor R·苏米
Owner OCIETE DE TECH MICHELIN
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