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Steel wire carcass passenger tire bead structure

A technology of tires and steel wires, which is applied to tire parts, tire edges, tire sidewalls, etc., can solve problems such as tire gaps and increase the difficulty of steel wire springback, so as to improve performance, overcome stress concentration, The effect of improving durability

Pending Publication Date: 2019-08-27
QINGDAO DOUBLESTAR TIRE IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the technical problem to be solved by the present invention is to overcome the problem of tire slit emptying caused by the strong rebound of steel wires in existing steel wire carcass passenger tires, and propose a method that is beneficial to increase the size of the steel wires. It is difficult to spring back, effectively avoiding stress concentration at the spigot, and solving the problem of spigot voiding. The steel wire carcass passenger tire spigot structure

Method used

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  • Steel wire carcass passenger tire bead structure
  • Steel wire carcass passenger tire bead structure
  • Steel wire carcass passenger tire bead structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: as figure 1 As shown, the present invention provides a steel wire carcass passenger tire rim structure, comprising a bead 1 and a steel wire carcass ply 2, the circumference of the bead 1 is coated with an apex 3, and the apex 3 is formed from the apex The lower end point 31 extends radially to the upper end point 32 of the apex rubber. The steel wire carcass ply 2 bypasses the bottom of the traveler 1 and turns over to the sidewall 7, and then extends radially to the steel wire carcass turn-up end point 21. The steel wire carcass ply 2 and the apex 3 are provided with a thickening film 4, and the end point 21 of the steel wire carcass turn-up is connected with the apex 3 through the thickening film 4. When steel wire is used as a carcass material, it has the problems of high bending rigidity and high resilience. At the same time, there is a problem of poor viscosity between the steel wire carcass ply 2 and the bead ring 1, which may easily cause the spigo...

Embodiment 2

[0035] Embodiment 2: as image 3 As shown, the present embodiment provides a steel wire carcass passenger tire slit structure, the radial height of the upper end point 32 of the apex rubber is higher than the radial height of the turn-up end point 21 of the steel wire carcass, and the upper end point 32 of the apex rubber is in contact with the steel wire The radial distance of the carcass turn-up end point 21 is greater than 10 mm, and the thickness of the apex 3 connected to the steel wire carcass turn-up end point 21 is not less than 2 mm. Considering that the steel wire carcass turn-up end point 21 has a large transverse shear force, the thickness of the apex 3 at the junction of the apex upper end point 32, the steel wire carcass turn-up end point 21 and the steel wire carcass turn-up end point 21 has been tested in this embodiment. Limitation avoids the cutting of the inner rubber material under the action of stress and strain. The above design ensures that the steel wi...

Embodiment 3

[0038] Embodiment 3: as Figure 4 As shown, the present embodiment provides another steel wire carcass passenger tire slit structure, the radial height of the upper end point 32 of the apex rubber is lower than the radial height of the turn-up end point 21 of the steel wire carcass, and the upper end point 32 of the apex rubber and The radial distance of the turn-up end point 21 of the steel wire carcass is greater than 10 mm. Considering the large transverse shear force at the end point 21 of the steel wire carcass turn-up, this embodiment limits the upper end point 32 of the apex rubber and the turn-up end point 21 of the steel wire carcass, so as to avoid the cutting of the inner rubber material under the action of stress and strain. Through the above design, it is ensured that the inner side of the steel wire carcass turn-up end point 21 is the apex 3, and the outer side is the compound point of the wear-resistant rubber and the sidewall 7 rubber. The transition from hard ...

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Abstract

The invention discloses a steel wire carcass passenger tire bead structure, and belongs to the field of steel wire carcass passenger tires. According to the technical scheme, the steel wire carcass passenger tire bead structure includes a steel wire ring and a steel wire carcass cord ply; the circumference of the steel wire ring is coated with an apex strip, the apex strip extends from a lower endpoint of the apex strip to an upper end point of the apex strip in the radial direction, the steel wire carcass cord ply passes by the bottom of the steel wire ring, is overturned to a side wall, andthen extends to a turn-up end point of a steel wire carcass in the radial direction; a tackifying adhesive piece is arranged between the steel wire carcass cord ply and the apex strip, and the turn-up end point of the steel wire carcass is connected with the apex strip through the tackifying adhesive piece. The steel wire carcass passenger tire bead structure is applied to a steel wire carcass passenger tire, the problem of tire bead separation caused by high rebound resilience of a steel wire in an existing steel wire carcass passenger tire is solved, and the steel wire carcass passenger tire bead structure had the characteristics that stress concentration at the bead part can be effectively avoided, tire bead separation is solved, product performance is improved, and driving safety of products in various road conditions, particularly in bad road conditions, is satisfied.

Description

technical field [0001] The invention belongs to the field of steel wire carcass passenger tires, in particular to a steel wire carcass passenger tire spigot structure. Background technique [0002] Steel carcass passenger tire is a kind of tire that uses steel wire instead of polyester fiber, nylon, rayon, aramid fiber, etc. commonly used in passenger tire carcass as the carcass material. Excellent thermal performance, strong adhesion with rubber, low cost and other performance advantages. However, compared with ordinary polyester cord carcass, steel carcass has the characteristics of greater bending rigidity and stronger resilience. If the existing slit structure is used for steel carcass passenger tires, it is easy to cause damage during the molding process. And during the storage cycle of the green tire after molding and before vulcanization, there is a problem of slit gaping, and the tire is prone to early damage during use, especially under high load conditions. [00...

Claims

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Application Information

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IPC IPC(8): B60C15/04B60C15/06B60C13/00B60C15/00
CPCB60C15/04B60C15/0603B60C15/0628B60C13/00B60C15/0009Y02T10/86
Inventor 刘杰徐伟王君董康焦冬冬张晨曦任振兴刘继发唐效蕾张琳王伟李圆圆梁垂燕赵玉娜
Owner QINGDAO DOUBLESTAR TIRE IND CO LTD
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