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Device inside a tyre for reducing rolling noise.

A tire and internal cavity technology, applied to tire parts, pneumatic tires, wheels, etc., can solve problems such as high fiber volume density, and achieve the effect of improving internal cavity noise

Inactive Publication Date: 2010-09-15
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, high fiber bulk densities cannot be achieved with these solutions

Method used

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  • Device inside a tyre for reducing rolling noise.
  • Device inside a tyre for reducing rolling noise.
  • Device inside a tyre for reducing rolling noise.

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] Description of the drawings

[0030] figure 1 A meridional section (ie a section on a plane containing the axis of rotation of the tyre) through a tire 1 according to the invention mounted on its mounting rim 2 and inflated to its service pressure is shown.

[0031] The tire 1 comprises a crown 3 having, radially on the outside, a tread 31 intended to come into contact with the road surface when the tire is rolling. On each axial side of the crown 3 , the tire comprises sidewalls 4 connecting said crown to beads 5 , the purpose of which is to ensure contact with the mounting rim 2 . The inner wall 10 of the tire defines, together with the outer wall on which the rim 2 is mounted, a cavity 100 for containing gas to be inflated to a given pressure corresponding to the pressure of use of the tire. In order to achieve a good sealing effect, the inner wall 10 of the tire 1 is covered in a known manner with a rubber compound which is airtight with respect to the inflation g...

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PUM

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Abstract

Tyre (1) comprising a crown (3), sidewalls (4) continuing the crown from each side, these sidewalls being connected to beads (5) designed to be in contact with a tyre-fitting rim (2), and the tyre having an inside wall (10) defining with the fitting rim (2) an internal cavity (100) to enable the tyre to be inflated. This tyre comprises, on at least part of its inside wall (10) defining the internal cavity (100), a plurality of elongated protuberances (6) forming a dense coating, the tyre being characterized in that these elongated protuberances (6) comprise a plurality of supporting fibres 60 and a plurality of branching fibres (61), said branching fibres being attached to said supporting fibres, and each supporting fibre (60) having two ends, at least one of which is attached to the inside wall (10) of the tyre.

Description

technical field [0001] The invention relates to a tyre, in particular to a device for reducing the rolling noise of a tyre. Background technique [0002] In order to reduce the rolling noise of tires on vehicles, in particular, it is known to operate to affect the part of the noise produced during vibration by the air charge contained in the cavity defined by the tire and its mounting rim (this is also known "Tire Cavity Noise"); for this purpose, it is known practice to place a material based on foam or fibers on the inside of the tire, that is to say the part to which the inflation pressure of the tire is applied. [0003] Patent application JP2006-117115 or JP2004-082787 describes a tire structure in which the inner wall of the tire is covered with a plurality of fibers forming a noise attenuating covering. While these solutions do reduce cavity noise, they need further improvement. In particular, high fiber bulk densities cannot be achieved with these solutions. Cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C19/00
CPCB60C19/002Y10T152/10495B60C5/00
Inventor N·多特雷嶋中七重L·格雷弗里S·帕加诺
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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