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Reinforcement comprising two reinforcing materials and tyre comprising such a reinforcement

A technology of reinforcements, reinforcement elements, applied in the direction of heavy tires, transportation and packaging, tire parts, etc., can solve problems such as occurrence, cracking, cracking, etc.

Inactive Publication Date: 2015-03-11
OCIETE DE TECH MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technical solution has the following disadvantages: on the one hand, one end of the carcass ply turnup in the bead rises relatively high, which may promote the appearance of cracks on the end of the carcass ply turnup, and on the other hand, There is a discontinuity between two reinforcing materials that may promote cracks at the junction of two materials that extend one along an extension of the other or that overlap for a short length

Method used

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  • Reinforcement comprising two reinforcing materials and tyre comprising such a reinforcement
  • Reinforcement comprising two reinforcing materials and tyre comprising such a reinforcement
  • Reinforcement comprising two reinforcing materials and tyre comprising such a reinforcement

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Embodiment Construction

[0055] In order to make the drawings and the corresponding description easier to read, the same reference numerals are used to designate the same structural elements in the various embodiments discussed.

[0056] figure 1 is a schematic plan view of a reinforcement (reinforcement layer) 10 of width L having two edges 11 and 12 according to the invention. This reinforcement 10 comprises a plurality of double reinforcing elements embedded in a rubber-based material, i.e. stretchable first textile reinforcing elements 1 alternating with non-stretchable second metallic reinforcing elements 2 so that in less than the total length of the reinforcement The length Lc of L forms a coupling portion 3 in which these extensible and non-extensible reinforcing elements lie substantially in the same mean plane and in the reinforcement 10 with respect to the longest direction of the reinforcement ( exist figure 1 marked with axis XX) is inclined at an angle A. The non-extensible metal re...

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Abstract

Tire reinforcement (10) having a bi-material structure of reinforcing elements that consists of at least a plurality of extensible first reinforcing elements (1) and at least a plurality of inextensible second reinforcing elements (2), these first and second reinforcing elements being mutually parallel and distributed alternately in appropriate proportions in order to achieve the desired level of reinforcement, these first and second reinforcing elements lying within the same mean plane, this reinforcement being such that the extensible first reinforcing elements (1) are coupled to the inextensible second reinforcing elements (2) over a coupling length Lc which is shorter than the length L1 of the extensible first reinforcing elements (1) so that, with each of the first and second reinforcing elements having two ends, at least one of the ends of the extensible first reinforcing elements (1) is offset in relation to the two ends of the inextensible second reinforcing elements (2).

Description

technical field [0001] The present invention relates to a novel reinforcement (reinforcement layer) for reinforcing radial tires and especially designed for medium or high tonnage vehicles such as trucks, road tractors, buses, heavy goods vehicles. The invention also relates to a tire comprising this reinforcement. Background technique [0002] Such tires generally comprise a carcass reinforcement (carcass reinforcement) consisting of at least one rubber-based ply comprising metal reinforcing elements extending substantially radially, ie forming an angle between 80° and 100° with the circumferential direction , the ply is covered radially on the outside by a crown reinforcement (crown reinforcement) consisting of at least two plies of metal cords passing from one ply to the other The layers intersect, forming an angle between 10° and 45° with the circumferential direction, the crown itself being covered on top by the tread. In addition, the tire includes sidewalls connecti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C15/06
CPCB60C15/06B60C2200/06B60C2015/009Y10T152/10828Y10T152/10837Y10T428/249921
Inventor M·德图利奥J-M·维莱
Owner OCIETE DE TECH MICHELIN