CN210191042U

CN210191042U - All-steel run-flat tire

Info

Publication number: CN210191042U
Application number: CN201921155595.2U
Authority: CN
Inventors: Xianghai Li; 李相海
Original assignee: Dongying Fangxing Rubber Co Ltd
Current assignee: Dongying Fangxing Rubber Co Ltd
Priority date: 2019-07-22
Filing date: 2019-07-22
Publication date: 2020-03-27
Anticipated expiration: 2029-07-22

Abstract

The utility model discloses an all-steel run-flat tire relates to tire structural design technical field. The utility model discloses, glue core (2) and connect in bead ring (3) upper end, matrix (1) is individual layer matrix structure, matrix (1) is located the tire inboard and extends to bead ring (3) after walk around bead ring (3) turn-up to the outside of tire, its turn-up extreme point is located between gluey core (2) extreme point and bead ring (3), support and glue (4) and be located between matrix (1) and airtight layer (6), the upper end of support and gluing (4) is apart from belted layer (5) extreme point a ═ 15-30 mm; the framework materials of the belt ply (5) and the tire body (1) are all steel cord fabrics. Compared with the prior art, the utility model has the advantages that the tire body structure is designed as a single-layer tire body, thereby greatly reducing the cost of the tire; the tire structure can be matched with a structural design of supporting cement with lower thickness, so that the cost of the tire is greatly reduced; the durability of the tire is improved; the riding comfort of the tire is improved.

Description

All-steel run-flat tire

Technical Field

The utility model relates to a tire structural design technical field, in particular to all-steel run-flat tire.

Background

With the development of the automobile industry, high-end automobile brands rapidly occupy China, and the demand of corresponding high-safety tires is gradually increased. The tire bushel has realized that such business opportunities, gooch, michelin, and pristonne, etc., have all pushed tires with run-flat functionality that makes people safer when driving a vehicle. At present, run-flat tires are developing at a speed of 15% per year, which is a big trend of the development of the automobile matching industry in the future.

At present, most brands have introduced run-flat tire products, but the cost and performance of tires in production are difficult to meet simultaneously because the products need to add a supporting rubber component at present, and 85% of products are designed into a 2-layer carcass + 2-layer belt and 2-layer crown belt structure, so that the weight is 2.5-4.5kg on average compared with the normal products, and meanwhile, the durability and the comfort performance of the products are reduced.

Disclosure of Invention

The utility model provides an all-steel run-flat tire solves above-mentioned technical problem through structural design.

The specific technical scheme is that the all-steel run-flat tire comprises a tire body, a rubber core, a steel wire ring, support rubber, a belt ply and an airtight layer; the rubber core is connected to the upper end of the bead ring, the tire body is positioned on the inner side of the tire and extends to the bead ring, and the support rubber is positioned between the tire body and the airtight layer; the tyre body is of a single-layer tyre body structure, the tyre body extends to the bead ring and then winds around the bead ring to be reversely wrapped to the outer side of the tyre, and the reversely wrapped end point of the tyre body is positioned between the rubber core end point and the bead ring;

the distance between the upper end point of the support glue and the end point of the belt ply is 15-30 mm; the lower endpoint of the support rubber is designed according to the specification of the tire, the specification of the tire is different, the height of the section of the tire is different, and the width of the support rubber is also different.

Both the belt ply and the carcass framework are made of steel cord fabric, namely, an all-steel structure. The steel wire material selected for the carcass framework material has the characteristics of low bending rigidity and thin steel wire diameter, and the processability of the carcass and the winding performance of the carcass are ensured.

Further, the thickness of the supporting glue is 5-9 mm. The utility model discloses well thickness that supports to glue is thinner than the thickness that current run-flat tire supported to glue, and current run-flat tire supports gluey thickness and is 8-12mm, the utility model discloses well all steel structure can be with supporting gluey thickness design to 5.5-8 mm. The air-pressure-free durability can be maintained, the common durability of the product can be improved to a great extent, and according to experiments, the durability can be improved by 20-35%.

The utility model discloses well all steel construction, the matrix is individual layer matrix structure, and the turn-up position of matrix descends to gluing between core end point and the steel wire winding, and weight ratio current run-flat tire is lighter 5-10%, has improved the comfort level by bus of product simultaneously.

Compared with the prior art, the utility model has the advantages that the tire body structure is designed as a single-layer tire body, thereby greatly reducing the cost of the tire; the tire structure can be matched with a structural design of supporting cement with lower thickness, so that the cost of the tire is greatly reduced; the durability of the tire is improved; the riding comfort of the tire is improved.

Drawings

FIG. 1 is a schematic view of an all-steel run-flat radial tire.

Description of reference numerals:

1. the tire comprises a tire body, 2, a rubber core, 3, a steel wire ring, 4, support rubber, 5, a belted layer, 6 and an airtight layer, wherein a distance from the end point of the support rubber to the end point of the belted layer is obtained.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings and examples:

it should be noted that the structures, ratios, sizes, etc. shown in the drawings of the present specification are only used for matching with the contents disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, and any modifications of the structures, changes of the ratio relationships, or adjustments of the sizes should fall within the scope that the technical contents disclosed in the present invention can cover without affecting the functions and the achievable purposes of the present invention.

Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

Example 1:

fig. 1 is an all-steel run-flat tire including a carcass 1, a rubber core 2, a bead ring 3, a support rubber 4, a belt 5 and an airtight layer 6; the rubber core 2 is connected to the upper end of the bead ring 3, the tire body 1 is positioned on the inner side of the tire and extends to the bead ring 3, and the support rubber 4 is positioned between the tire body 1 and the airtight layer 6; the tyre body 1 is a single-layer tyre body structure, the tyre body 1 extends to the bead ring 3 and then winds around the bead ring 3 to be reversely wrapped to the outer side of the tyre, and the reversely wrapped end point of the tyre body is positioned between the end point of the rubber core 2 and the bead ring 3; the distance a between the upper end point of the support rubber 4 and the end point of the belt ply 5 is 15 mm; the lower endpoint of the support rubber 4 is designed according to the tire specification, the tire specification is different, the section height is different, and the design of the support rubber width is also different.

The framework materials of the belt ply 5 and the tire body 1 are all steel cord fabrics, namely, all-steel structures. The steel wire material selected for the carcass framework material has the characteristics of low bending rigidity and thin steel wire diameter, and the processability of the carcass and the winding performance of the carcass are ensured.

The thickness of the support glue 4 is 6 mm. The technology of the middle all-steel run-flat radial tire structure of the utility model is the same as that of the existing run-flat tire.

Example 2:

the thickness of 4 is glued to the support is designed for 9mm, and the upper endpoint of 4 is glued to the support is restrainted 5 extreme point distance a of layer 20mm, and the lower extreme point of 4 is glued according to the tire specification design to the support, and the tire specification is different, and its section height is different, and the design of 4 width is glued to the support also is different. The rest of the design is the same as or similar to example 1.

Example 3:

the thickness of the support rubber 4 is designed to be 5.5mm, the distance a between the upper end point of the support rubber 4 and the end point of the belted layer 5 is 30mm, the lower end point of the support rubber 4 is designed according to the tire specification, the tire specification is different, the section height is different, and the width of the support rubber 4 is also different. The rest of the design is the same as or similar to example 1.

The utility model has the advantages that the tyre body 1 is a single-layer tyre body, the frame materials of the belted layer 5 and the tyre body 1 are all wirecord fabrics, namely, an all-steel structure, and the thickness of the supporting rubber 4 is 1.5-3.5mm thinner than that of the prior run-flat tyre; the weight is 5-10% lighter than that of the prior run-flat tire.

The zero air pressure durability, the common durability and the riding comfort are compared, and the performance test is as follows:

remarking: the performance is marked with "+" and the equivalent is marked with "═ j".

Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, and that the scope of the invention is defined by the appended claims.

Claims

1. An all-steel run-flat tire, characterized in that,

comprises a tire body (1), a rubber core (2), a steel wire ring (3), a supporting rubber (4), a belt ply (5) and an airtight layer (6);

the rubber core (2) is connected with the upper end of the steel wire ring (3),

the tyre body (1) is of a single-layer tyre body structure, the tyre body (1) is positioned on the inner side of the tyre, extends to the bead ring (3), winds around the bead ring (3) and is reversely wrapped to the outer side of the tyre, and the reversely wrapped end point of the tyre body is positioned between the end point of the rubber core (2) and the bead ring (3);

the support rubber (4) is positioned between the tire body (1) and the airtight layer (6), and the thickness of the support rubber (4) is 5-9 mm.

2. An all-steel run-flat tire according to claim 1, wherein the distance a between the upper end of the support rubber (4) and the end of the belt (5) is 15-30 mm.

3. An all-steel run-flat tire according to claim 1, wherein the thickness of the support rubber (4) is 5.5-8 mm.