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Sound-insulating tires for vehicle wheels

A technology of tires and wheels, applied to vehicle parts, pneumatic tires, tire parts, etc.

Active Publication Date: 2019-06-11
PIRELLI TYRE SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0036] Nevertheless, besides generally not being able to solve the said drawbacks, the proposed solutions involve operations that generate considerable additional costs

Method used

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  • Sound-insulating tires for vehicle wheels
  • Sound-insulating tires for vehicle wheels
  • Sound-insulating tires for vehicle wheels

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0145] figure 1 Schematically shows a radial half-section view of a sound-insulating tire for vehicle wheels according to the invention, said sound-insulating tire comprising a foamed polyolefin material with closed macrocells.

[0146] In particular, in figure 1 In, "a" represents the axial direction, "X" represents the radial direction, and specifically shows the line X-X of the equatorial plane.

[0147] The tire 100 for four-wheeled vehicles comprises at least one carcass structure comprising at least one carcass layer 101 having respective opposite end flaps, the end flaps In engagement with a corresponding annular anchoring structure 102 called a bead core, said annular anchoring structure 102 may be associated with a bead filler 104 . The region of the tire comprising the bead core 102 and the bead filler 104 forms a bead structure 103 for anchoring the tire on a corresponding mounting rim (not shown).

[0148] The carcass structure is generally radial, ie the rein...

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PUM

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Abstract

Sound-insulating tire (100) and method for its manufacture, wherein the tire comprises a specific polyolefin sound-absorbing foam exhibiting attenuation performance against noise generated in the cavity of such tire, and hydrolysis resistance, poor water absorption and unexpected thermal and mechanical stability under conditions of use, wherein the sound-absorbing material (301) is applied to at least a portion of the radially inner surface (113) of the tire, preferably at least to the air-impermeable On a portion of the radially inner surface of the layer (112) of elastomeric material, wherein said sound absorbing material comprises a foamed polyolefin material having closed macropores characterized by an average size according to ASTM D3576 of at least 1.5mm, more preferably at least 3mm, even more preferably at least 4mm.

Description

technical field [0001] The present invention relates to a sound-insulating tire for vehicle wheels. More specifically, the present invention relates to a sound-insulating tire for a vehicle wheel, the sound-insulating tire including a specific sound-absorbing foam capable of reducing noise in the vehicle due to its ability to attenuate the cavity noise of the tire itself. Noise perceived in the cab / passenger compartment. Background technique [0002] Tires for vehicle wheels generally comprise a carcass structure comprising at least one carcass ply having opposite end flaps respectively engaged with respective annular anchoring structures, the Said annular anchoring structure is integrated in an area commonly referred to as the "bead". [0003] The carcass structure is associated with a belt structure comprising one or more belt layers in radially superimposed relationship with respect to each other and with respect to the carcass structure, the belt layers having textile ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C19/00
CPCB60C19/002B60C5/002B60C19/00
Inventor P·卡拉西诺L·詹尼尼T·哈内尔A·斯科蒂
Owner PIRELLI TYRE SPA