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Improved anti-resonance noise device for tire

A tire tread and flexible device technology, applied in tire parts, tire tread/tread pattern, transportation and packaging, etc., can solve problems such as diaphragm tearing, accidents, and reducing the effectiveness of groove sealing

Active Publication Date: 2015-06-03
OCIETE DE TECH MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, it was found that this last-mentioned membrane could be subject to accidents during the demoulding step: that is, a small amount of the membrane could be torn, thus correspondingly reducing the degree of closure of the grooves and the effectiveness of the device in terms of reducing noise. sex

Method used

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  • Improved anti-resonance noise device for tire
  • Improved anti-resonance noise device for tire
  • Improved anti-resonance noise device for tire

Examples

Experimental program
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Embodiment Construction

[0045] In the drawings of this specification, the same reference numerals may be used to describe alternative forms of the invention as long as the reference numerals indicate elements having similar characteristics, whether structural or functional in nature. .

[0046] FIG. 1 shows in cross section a partial view of a tread according to the prior art fitted to a tire having the dimensions 225 / 55 R 17 . This figure depicts a groove 1 delimited by two raised elements 2 , 3 of the tread, which groove 1 extends substantially in the circumferential direction of the tire on which said tread is mounted. This groove 1 having a width W equal to 13 mm and a depth P equal to 7.5 mm, measured on the tread surface in a new state, is composed of a first wall 20 and a second wall 30 facing each other and the two A groove base 10 is defined where the walls are joined together. The tread comprises a tread surface 100 intended to contact the road during running. In the following, the botto...

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PUM

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Abstract

The invention relates to a tread including at least one groove (1) that comprises at least one flexible device for at least partially closing said groove when said device passes therethrough while making contact with a pavement, having a blade (4, 4') limited by a base wall (40) facing the bottom of the groove (10) that includes the wall bearing the blade. A second portion (402) extends the first portion, said second portion being extended by a third portion (403) until the end portion (41) of the blade. The first portion and the second portion are shifted outward relative to a plane that connects the connecting points to the wall bearing the blade and connects the connecting points of the second portion to the third portion so as to form a notch of maximum height H in the base wall of the blade. Said tread is characterized in that the angle between the second portion (402) and the third portion (403) is greater than 110 degrees and less than 180 degrees.

Description

technical field [0001] The present invention relates to tire treads, in particular to treads comprising grooves comprising flexible (flexible) means for reducing noise generated during running by air resonance inside said grooves. Background technique [0002] It is known that a running tire comes into contact with the road in the contact footprint (contact patch), the air being forced to circulate in the duct formed by the grooves, especially those having a general circumferential orientation, and the road itself, in which duct Open at both ends. [0003] The air in this duct forms a vibrating air column whose resonant frequency depends on the length between the two ends of the duct and thus on the length of the groove in contact with the road. [0004] Resonance of air in the grooves causes noise inside the vehicle and noise outside the vehicle in a vehicle equipped with the tire. [0005] The frequency of said internal and external noise is usually around 1 kHz, which i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/03B60C11/04
CPCB60C11/0309B60C2011/1338B60C11/1307B60C19/002
Inventor F·布儒瓦F-X·布吕诺P·菲金格
Owner OCIETE DE TECH MICHELIN