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Tyre with improved belt structure

A technology for tires and crowns, which is applied to tire parts, reinforcing layers of pneumatic tires, tire treads/tread patterns, etc., and can solve the problems of low density of reinforcing elements and low mechanical strength of crown reinforcements

Active Publication Date: 2020-05-01
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, due to the low density of the reinforcing elements, the mechanical strength of the crown reinforcement is relatively low

Method used

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  • Tyre with improved belt structure
  • Tyre with improved belt structure
  • Tyre with improved belt structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0089] Tire according to the first embodiment of the present invention

[0090] The figures show a frame of reference X, Y, Z corresponding respectively to the general axial direction (X), radial direction (Y) and circumferential direction (Z) of the tyre.

[0091] figure 1 A tire according to a first embodiment of the invention, in this case a pneumatic tire, is shown indicated generally at 10 . The tire 10 substantially exhibits a rotation about an axis substantially parallel to the axial direction X. The tire 10 here is intended for passenger cars.

[0092] The tire 10 is a radial tire and comprises a crown 12 with a tread 20 and a crown reinforcement 14 extending in the circumferential direction Z in the crown 12 . The crown reinforcement 14 comprises a working reinforcement 15 having a first working ply 16 and a second working ply 18 and a hooping reinforcement 17 having a hooping ply 19 . The crown reinforcement 14 is covered by a tread 20 . In this case, a hooping re...

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Abstract

The invention relates to a tyre comprising at least first and second working plies (16,18) respectively comprising first and second reinforcing elements (50, 52), in which at least one of the following relationships is satisfied: (D14 x d1 x 1000) / E1 is larger than or equal to 3324 x E1 + 3650 and smaller than or equal to 3998 x E1 + 4547 (I) , (D24 x d2 x 1000) / E2 is larger than or equal to3324 x E2 + 3650 and smaller than or equal to 3998 x E2 + 4547 (II) , wherein: D1, D2 is the diameter of each reinforcing element (50, 52) consisting of a metal monofilament (66, 68), D1 and / or D2 ranging from 0.25 mm to 0.38 mm, d1, d2 is the density of the reinforcing elements (50, 52), expressed in monofilaments per decimetre, and E1, E2 is the mean thickness of the working ply (16, 18), expressed in mm.

Description

technical field [0001] The present invention relates to tires comprising an improved crown reinforcement. A tire is understood to mean a substantially annular structure. Preferably, the invention relates to pneumatic tyres. Pneumatic tires are understood to mean tires intended to form, in cooperation with a supporting element such as a rim, a cavity capable of being pressurized to a pressure higher than atmospheric pressure. In contrast, non-pneumatic tires cannot be pressurized. [0002] The invention relates to the field of tires intended to be fitted to vehicles. The tire is preferably designed for passenger cars, but may be used on any other type of vehicle, such as two-wheeled vehicles, heavy vehicles, agricultural vehicles, construction vehicles or aircraft, or more generally, on any rolling gear. Background technique [0003] A first prior art described in WO2013117476 is known. WO2013117476 describes a radial pneumatic tire comprising a crown reinforcement compr...

Claims

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Application Information

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IPC IPC(8): B60C9/00B60C9/20B60C11/00
CPCB60C9/0007B60C9/2009B60C2011/0033B60C2009/2067B60C9/0064B60C2009/2016B60C2009/2077B60C2009/2083
Inventor A·博内G·卡内韦J-C·德罗贝尔-马聚尔C·吉雄B·苏莱-德-巴斯
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN