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Tread comprising a block having a plurality of sipes

A technology of sipes and blocks, applied in the direction of tire tread/tread pattern, transportation and packaging, tire parts, etc., to achieve the effect of improving durability and improving grip performance

Active Publication Date: 2016-06-22
OCIETE DE TECH MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additionally, the use of inclined sipes in the tread may result in additional ride noise

Method used

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  • Tread comprising a block having a plurality of sipes
  • Tread comprising a block having a plurality of sipes
  • Tread comprising a block having a plurality of sipes

Examples

Experimental program
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Embodiment Construction

[0050] In the following description, substantially the same or similar elements will be denoted by the same reference numerals.

[0051] figure 1 is a partial view of a tread 1 of a tire according to a first embodiment of the invention.

[0052] The tread 1 comprises at least one block 3 of rubber material. Here, the block 3 is delimited by two grooves 4, which are in the figure 1 have been shaded gray to make the invention easier to understand. More specifically, the blocks 3 have a width W and a length L that is much greater than the width W. As shown in FIG. Much larger means that the length L is at least equal to 5 times the width W. In this way, the blocks 3 appear as strips extending in the circumferential direction X when the tread 1 is mounted on the tyre. The strip may extend around the entire circumference of the tyre. Alternatively, the strip extends only over a part of the periphery.

[0053] Furthermore, the block 3 comprises a contact surface 5 intended fo...

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Abstract

The invention relates to a tyre tread comprising at least one block (3) of rubber material of width W and length L with L>>W. The block extends in a circumferential direction (X) when the tread (1) is mounted on the tyre, the block (3) comprising a contact surface (5) intended to come into contact with the ground and a first lateral wall (7) and a second lateral wall (9) delimiting this contact surface (5). The block (3) further comprises a plurality of sipes (11, 11a, 11b) opening onto the contact surface (5) of the block, each sipe (11) extending over the contact surface (5) in an oblique direction, opening onto the first lateral wall (7) and onto the second lateral wall (9), the sipes of the block being oriented in the same direction. The sipes (11) are spread over the contact surface (5) of the block in such a way that when a sipe (11a) reaches the second lateral wall (9) another sipe (11b) begins from the first lateral wall (7) at the same circumferential level (N) on the block, and each sipe (11) comprises at least two parts.

Description

technical field [0001] The present invention relates to a motor vehicle tire tread comprising blocks of rubber material, the length of which is much greater than its width, and more particularly to a tread comprising blocks having a plurality of sipes tread. Background technique [0002] Document FR759592 discloses the use of sipes in the tread of a tire in order to increase the grip of the tire. In particular, the use of sipes makes it possible to increase the number of corners on the tread surface of the tread, thereby significantly promoting grip on wet ground. Sipe means a cut in the tread defining walls of material, the width of which is suitable to allow these walls to make at least partial contact when entering the contact patch in which the tire contacts the ground. The width of the sipe is at most equal to 2 millimeters (mm). [0003] As a complement to document FR759592, document FR43383 discloses the use of inclined sipes. The inclined sipes define sub-blocks ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/04B60C11/12
CPCB60C2011/1209B60C2011/1213B60C2011/1227B60C2011/129B60C11/12B60C11/033B60C11/0332B60C11/1204B60C11/1236B60C11/1281B60C2011/0334
Inventor M·博纳穆尔B·迪朗-加瑟兰S·勒菲弗M·旺达勒横川一隆
Owner OCIETE DE TECH MICHELIN
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