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tire

A technology for tires and rims, applied in tire parts, tire rims, reinforcement layers of pneumatic tires, etc., can solve problems such as damage to tires, sidewall collision and wear, etc., and achieve the effect of easy production, rapid production and production.

Active Publication Date: 2018-07-06
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] Furthermore, the present desire to use tires with ever shorter sidewall heights, another consequence of which is the fact that impacts on said sidewalls cause more severe wear than if the sidewalls were higher, thus more tire damage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] Example 1: Curb Test

[0097] The test was performed using a 205 / 55R16 reference tire including various protrusions and the same control tire without protrusions.

[0098] Tires P1 to P4 are respective tires according to the present invention.

[0099] The protrusions of the tires P1 and P4 are arranged at a zero inclination angle with respect to the radial direction.

[0100] The protrusions of the tires P2 and P3 are arranged at a certain oblique angle with respect to the radial direction.

[0101] The column "angle" corresponds to the angle formed by each protrusion with the radial direction of the tire.

[0102] The relief angle α is the angle formed by each end of the protrusion (eg Figure 4 shown in ), designed to make the protrusions easier to release from the mold.

[0103] The interval of the protrusions is the distance between the center of the first void and the center of the second void adjacent to the first void.

[0104] H (mm) is the average heigh...

Embodiment 2

[0118] Example 2: Curb Test

[0119] The test was performed using a 245 / 40R18 reference tire including various protrusions and the same control tire without protrusions.

[0120] Tires P1 to P4 are various tires according to the present invention.

[0121] The various technical features mentioned with respect to Embodiment 1 are reproduced in Embodiment 2.

[0122] Table III below collects the measurable technical characteristics of the individual tires according to a variant of the invention.

[0123] Table III

[0124]

[0125]

[0126] The test was carried out under the same operating conditions as explained for Example 1 with an 8.5J 18 rim and a tire inflated to a pressure of 2.3 bar, mounted on the right front axle of the vehicle and supporting a load of 580 kg.

[0127] The results in Table IV below show that, before the punctures of the tires, an increase in speed was obtained between the control tire (result equal to 100) and the respective tires accordin...

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Abstract

The invention relates to a tire for a rolling assembly comprising a rim and a tire comprising at least one carcass reinforcement (2) radially outer side surrounded by a crown reinforcement (3) Covering, the crown reinforcement (3) itself is arranged radially inside the tread (4) having two axially outermost ends, the crown reinforcement (3) consisting of Composed of at least one layer of reinforcing elements, said tread (4) is connected by two sidewalls (6) to two beads (5) intended to come into contact with the rim (7), said The rim (7) has upper hooks (7b), each bead (5) comprises at least one circumferential reinforcing element, said sidewall (6) comprises a series of protrusions (8) on its outer surface, so Said protrusions (8) alternate with voids (9), said tread (4) comprising circumferential grooves (10) at least at one axially outermost end (4a). Said tire is characterized in that each protrusion (8) is arranged on the surface of the sidewall, the different protrusions are arranged successively in a regular or irregular manner between point A and point E, and at least one protrusion (8) Partially or completely interrupting or not interrupting said circumferential groove (10).

Description

technical field [0001] The present invention relates to bias ply tires or radial tires. Background technique [0002] Radial tires are gradually being used in various markets, especially the passenger car tire market. This success is due in particular to the qualities exhibited by radial tire technology in terms of durability, comfort and low rolling resistance. [0003] The main parts of a tire are the tread, sidewalls and beads. The bead is designed to make contact with the rim. In a radial tire, each of the main parts constituting the tire (ie, the tread, sidewalls, and beads) has functions significantly different from each other and thus has a known specific composition. [0004] A radial tire is substantially reinforced by a carcass reinforcement comprising at least one carcass ply arranged at an angle substantially equal to 90° with respect to the circumferential direction of the tyre. This carcass reinforcement is covered radially externally and below the tread by...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C11/01B60C13/02
CPCB60C11/01B60C13/02B60C9/02B60C9/18B60C11/03B60C15/02B60C2011/0341
Inventor H·弗里戈H·埃莫里纳
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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