CN113043794A

CN113043794A - Tyre for vehicle

Info

Publication number: CN113043794A
Application number: CN202110234749.2A
Authority: CN
Inventors: 王�锋; 滕雷; 朱丽艳; 孙艳慧; 陈雪梅; 杨才欣; 杨宝忠
Original assignee: Shandong Linglong Tyre Co Ltd
Current assignee: Shandong Linglong Tyre Co Ltd
Priority date: 2021-03-03
Filing date: 2021-03-03
Publication date: 2021-06-29
Anticipated expiration: 2041-03-03
Also published as: CN113043794B

Abstract

The invention relates to the field of tires and discloses a tire, wherein a longitudinal main groove, a tire shoulder groove, a cutter groove, a tire shoulder cutter groove and a tire crown cutter groove are arranged on the tire, the tire shoulder groove is a groove arranged on a tire shoulder, the cutter groove is a groove formed by extending the tire shoulder groove on a tire crown surface, the cutter groove is not communicated with the longitudinal main groove, and an arc-shaped tire crown cutter groove is arranged on a pattern block, so that the problem of rigidity reduction caused by the fact that a tire crown is divided into small broken shapes is solved, and meanwhile, the drainage performance is also ensured.

Description

Tyre for vehicle

Technical Field

The invention relates to the field of tires, in particular to a tire.

Background

The tire is used as a moving part of a vehicle, and needs to have sufficient shape stability and adaptive friction force, in the prior art, a pattern on the tire comprises transverse grooves and sipes which are arranged in a specification pitch manner, in order to achieve high braking performance and effective drainage performance, the transverse grooves and the sipes are usually arranged to penetrate into a circumferential longitudinal main groove, when braking is carried out, longitudinal force which is deformed along with a tire tread and friction force generated by friction between a road surface and the tire surface are generated on the tire, the friction between the road surface and the tire surface can be called as edge effect, the more the transverse grooves and the sipes are added on a tire block, the larger the edge effect is, the larger the friction force between the tire block and the road surface is, and thus the braking distance is shortened.

However, excessive lateral grooves and sipes, which increase the connectivity, cause the tire blocks to be divided into small pieces, which leads to a decrease in tread rigidity and a decrease in longitudinal force during braking of the tire.

Disclosure of Invention

In order to solve the problems, the tire is provided with a longitudinal main groove, a tire shoulder groove and a tire crown groove, wherein the tire shoulder groove is a groove arranged on a tire shoulder, the tire shoulder groove is a groove extending from the tire shoulder groove on a tire crown surface, the tire shoulder groove and the tire crown groove are connected through a connecting tire crown, the tire shoulder groove and the main groove are not communicated, an arc tire crown groove is arranged on a pattern block, the problem that the rigidity is reduced due to the fact that the tire crown is separated into small broken shapes is solved, and meanwhile the drainage performance is guaranteed.

In one embodiment of the present application, a tire is disclosed, comprising a crown, a shoulder and a sidewall, wherein the crown, the shoulder and the sidewall form the surface of the tire, the crown is a surface perpendicular to the circular section of the tire, the sidewall is a surface parallel to the circular section of the tire, and the shoulder is the connection part of the crown and the sidewall; the tire crown is characterized by comprising a tire crown surface, a tire crown surface and a plurality of longitudinal main grooves, wherein the tire crown surface is provided with a plurality of grooves; a pattern block which is the crown part among the plurality of longitudinal main grooves; further comprising: the tire shoulder grooves are grooves formed in the tire shoulder vertical to the circular cross section direction of the tire, a plurality of connecting tire crowns are arranged between the tire shoulder grooves and the longitudinal main grooves, and the connecting tire crowns and the tire crowns are of the same curved surface and are arrayed in the circumferential direction on the tire shoulder.

In an embodiment of the present application, further comprising: the tire shoulder groove is arranged between the tire shoulder groove and the connecting tire crown, the tire shoulder groove is a groove in the extending direction of the tire shoulder groove, the tire shoulder groove is communicated with the tire shoulder groove, and the tire shoulder groove is arranged on the tire crown and is arranged between the two tire shoulder grooves.

In an embodiment of the present application, further comprising: the tire crown cutter grooves are grooves formed in the pattern blocks, the running direction of the tire crown cutter grooves on the surface of the tire crown is an arc line, and the tire crown cutter grooves are arranged in a plurality of circumferential arrays on the pattern blocks.

In one embodiment of the present application, the shoulder groove has a depth of 75-90% of the longitudinal main groove depth.

In one embodiment of the present application, the sipe has a depth of 50% to 75% of the shoulder groove.

In one embodiment of the present application, the shoulder groove has a length La on one side of the crown, the sipe has a length Lb, and the sipe is located at a distance Lc from the longitudinal main groove, where La ═ Lb ═ Lc.

In one embodiment of the present application, the shoulder sipes are separated from the longitudinal main grooves by a distance Ld that is 20% -30% of La.

In one embodiment of the present application, the crown sipe consists of a first building region, a second building region and a third building region, the first and third building regions being disposed at both ends, the second building region communicating the first and second building regions, and the first and third building regions having a depth greater than the depth of the second building region; the first, second and third build regions are of equal width.

In one embodiment of the present application, the first and third build zones have a maximum depth of Hf and the second build zone has a maximum depth of He, wherein He is 25% -40% of Hf.

In one embodiment of the present application, the crown sipes are equidistant from the longitudinal main grooves on both sides.

The invention has the beneficial effects that:

the tire shoulder grooves and the cutter grooves are arranged, so that the drainage performance of the tire is ensured; the tire is prevented from being divided into small blocks by not communicating the cutter grooves and the main grooves of the longitudinal main grooves and arranging the tire crown cutter grooves into arc shapes, so that the rigidity of the tire is improved, and the braking distance is shortened.

Drawings

FIG. 1 is a front view of a tire in an embodiment of the present invention;

FIG. 2 is a development view of a tread in an embodiment of the invention;

FIG. 3 is one of cross-sectional views of a tire in an embodiment of the present invention;

FIG. 4 is one of cross-sectional views of a tire in an embodiment of the present invention;

FIG. 5 is a schematic view of a crown sipe in an embodiment of the present invention;

FIG. 6 is a side view of a crown sipe in an embodiment of the present invention.

In the figure, 1, a crown; 2. tire shoulders; 3. a sidewall; 4. a longitudinal main groove; 5. pattern blocks; 6. a tire shoulder groove; 7. a cutter groove; 8. a tire shoulder cutter groove; 9. a crown cutter groove; 91. a first constructor; 92. a second build area; 93. a third build area.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

When the term "radial" is used, the expression refers to the radial direction of the tire or carcass, if closer to the axis of rotation of the tire or carcass, the expression "radially inside"; when the term "circumferential" is used, it is expressed as the tire or carcass rolling direction; when the term "tire inner" is used, it is stated that the tire is on the side closer to the rim.

The following is a description of preferred embodiments of the present invention with reference to the accompanying drawings.

In some embodiments of the present application, as shown in fig. 1, a tire is provided, which includes a crown 1, a shoulder 2, a sidewall 3, a longitudinal main groove 4, and blocks 5 partitioned by the longitudinal main groove 4, and further includes a shoulder groove 6, sipes 7, shoulder sipes 8, and crown sipes 9.

The tire comprises a tire crown 1, a tire shoulder 2 and a tire side 3, wherein the tire crown 1 is a surface vertical to the circular section of the tire, and when the tire is used, the tire crown 1 is in contact with the ground; the tire sidewall 3 is the surface parallel with the circular cross section of tire, and the tire sidewall 3 is perpendicular with child hat 1, and the connection position of child hat 1 and side wall 3 is tire shoulder 2, and tire shoulder 2 is vertical structure.

The tire tread comprises a tire tread 1, a plurality of longitudinal main grooves 4, a plurality of tire tread blocks 5 and a plurality of tire tread blocks, wherein the longitudinal main grooves 4 are arranged on the surface of the tire tread 1 and are provided with a plurality of grooves, the shape of the longitudinal main grooves 4 is a groove formed in the circumferential direction of the tire tread 1, and the tire tread 1 among the plurality of longitudinal main grooves 4 is divided to obtain a plurality of circumferential.

In one implementation of the present application, the longitudinal main grooves 4 are provided three ways, i.e. the blocks 5 are provided with two ways.

In some embodiments of the present application, as shown in fig. 1 and fig. 2, a shoulder groove 6, a sipe 7 and a shoulder sipe 8 are provided at a shoulder 2, where the shoulder groove 6 is a groove formed perpendicular to a circular cross section of a tire, the sipe 7 is a groove on a surface of a tire crown 1 and extending along the shoulder groove 6, and a connecting tire crown 1 is included between the sipe 7 and a longitudinal main groove 4 on the surface of the tire crown 1, the connecting tire crown 1 and the tire crown 1 are of the same curved surface, and the connecting tire crown 1 is a part of the tire crown 1 and is used for ensuring that the sipe 7 is not communicated with the longitudinal main groove 4; the tire shoulder grooves 6 and the cutter grooves 7 are arranged in a plurality and are arranged on the tire shoulder 2 in a circumferential array.

The tire crown 1 is also provided with a tire shoulder siping 8, the extending direction of the tire shoulder siping 8 is the same as that of the siping 7, and the tire shoulder siping 8 is arranged between the two tire shoulder grooves 6.

It should be noted that, the more the grooves and sipes 7 on the tire, the more the edge effect is obvious, and the shorter the braking distance of the motor vehicle is, but at the same time, the excessive grooves and sipes 7 can separate the tire crown 1 into a plurality of small pieces in fine, broken bits, which affects the rigidity of the tire, so that the tire crown 1 is connected between the tire shoulder groove 6 and the longitudinal main groove 4, thereby avoiding the penetration between the tire shoulder groove 6 and the longitudinal main groove 4, avoiding the tire crown 1 being separated into small pieces in fine, improving the durability, ensuring the number of grooves at the same time, ensuring the edge effect large enough, and improving the braking performance of the tire.

It should be noted that the sipes 7 are provided between the shoulder grooves 6 and the longitudinal main grooves 4, and the shoulder sipes 8 are further provided between the two shoulder grooves 6, so that the drainage performance of the tire is improved

In some embodiments of the present application, as shown in fig. 3, the depth of the shoulder grooves 6 is set to Hc, the depth of the longitudinal main grooves 4 is set to Ha, and Hc is 75% to 90% of Ha; the depth of the siping 7 is set to Hb, which is 50% -75% of Ha.

In some embodiments of the present application, as shown in fig. 3, the length of the shoulder groove 6 in the plane of the crown 1 is La, the length of the sipe 7 is Lb, and the distance from the sipe 7 to the longitudinal main groove 4 is Lc, where La ═ Lb ═ Lc.

In some embodiments of the present application, as shown in FIG. 4, the distance of the shoulder sipes 8 from the longitudinal main grooves 4 is Ld, which is 20% -30% of La

In some embodiments of the present application, as shown in fig. 1 and 5, the tire further includes a crown sipe 9, the crown sipe 9 is a groove disposed on the block 5, the tread of the crown sipe 9 on the surface of the crown 1 is an arc, and the distance between the crown sipe 9 and the longitudinal main grooves 4 on both sides is equal, in one embodiment of the present application, the tread of the crown sipe 9 on the surface of the crown 1 is "opposite hook".

The crown sipes 9 are provided in plurality on the pattern blocks 5, and are arranged on the pattern blocks 5 in a circumferential array.

It should be noted that, the crown sipes 9 are arranged on the pattern blocks 5 to provide multiple edge effects and improve the braking performance of the tire, and meanwhile, the crown sipes 9 are arranged in a 'hook-butt' shape, so that the problem that the crown sipes 9 are cracked to separate the pattern blocks 5 into a plurality of blocks after long-time use and friction can be avoided.

In some embodiments of the present application, as shown in fig. 6, the crown sipe 9 is composed of a first configuration region, a second configuration region 92 and a third configuration region 93, the first configuration region and the third configuration region 93 are located at both ends of the crown sipe 9, the second configuration region 92 is located in the middle of the crown sipe 9, the second configuration region 92 communicates the first configuration region and the second configuration region 92, and the depth of the first configuration region and the third configuration region 93 is set to HF, and the depth of the second configuration region 92 is set to HE, then the depth relationship of the first configuration region, the second configuration region 92 and the third configuration region 93 is 25% -40% of HF.

The first, second and

third build areas

92, 93 are of equal width.

Various embodiments are derived from the above examples:

example 1:

a connecting crown 1 is provided on the tyre between the longitudinal main grooves 4 and the shoulder grooves 6.

Example 2:

a connecting crown 1 is arranged between a longitudinal main groove 4 and a shoulder groove 6 on the tire, a cutter groove 7 is arranged in the extending direction of the shoulder groove 6, and a shoulder cutter groove 8 is arranged on the two shoulder grooves 6.

Example 3:

a connecting crown 1 is arranged between a longitudinal main groove 4 and a shoulder groove 6 on the tire, a cutter groove 7 is arranged in the extending direction of the shoulder groove 6, the two shoulder grooves 6 are provided with shoulder cutter grooves 8, and a tread block cutter groove 9 is arranged on a pattern block 5 between the longitudinal main grooves 4.

A series of braking and durability tests were performed according to the application using the well-known 185R14C specification, and the following table of experimental results was obtained, where the larger the number, the more excellent the performance.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A tire, comprising:

the tire comprises a crown, a tire shoulder and a tire side, wherein the crown, the tire shoulder and the tire side form the surface of the tire, the crown is a surface vertical to the circular section of the tire, the tire side is a surface parallel to the circular section of the tire, and the tire shoulder is a connecting part of the crown and the tire side;

the tire crown is characterized by comprising a tire crown surface, a tire crown surface and a plurality of longitudinal main grooves, wherein the tire crown surface is provided with a plurality of grooves;

a pattern block which is the crown part among the plurality of longitudinal main grooves;

it is characterized by also comprising:

the tire shoulder grooves are grooves formed in the tire shoulder vertical to the circular cross section direction of the tire, a plurality of connecting tire crowns are arranged between the tire shoulder grooves and the longitudinal main grooves, and the connecting tire crowns and the tire crowns are of the same curved surface and are arrayed in the circumferential direction on the tire shoulder.

2. The tire of claim 1, further comprising:

a sipe disposed between the shoulder groove and the connecting crown, the sipe being a groove in a direction in which the shoulder groove extends, the sipe communicating with the shoulder groove,

and the shoulder cutter groove is arranged on the tire crown and is arranged between the two shoulder grooves.

3. The tire of claim 1, further comprising:

the tread cap cutter groove is a groove arranged on the pattern block, and the tread cap cutter groove runs on the tread cap surface in an arc line; the tire crown cutter grooves are arranged in a plurality of numbers and are circumferentially arrayed on the pattern blocks.

4. The tire of claim 1, wherein the shoulder grooves have a depth that is 75% -90% of the longitudinal main groove depth.

5. The tire of claim 2, wherein the sipe has a depth of 50% to 75% of the shoulder groove.

6. The tire of claim 2 wherein the shoulder grooves have a length La on one side of the crown, the sipes have a length Lb, and the sipes are spaced from the longitudinal main grooves by Lc, where La-Lb-Lc.

7. The tire of claim 6, wherein the shoulder sipes are a distance Ld from the longitudinal main groove, Ld being 20% -30% of La.

8. The tire of claim 3, wherein the crown sipe is comprised of a first build region, a second build region, and a third build region, the first and third build regions being disposed at both ends, the second build region communicating the first and second build regions, and the first and third build regions having a depth greater than a depth of the second build region;

the first, second and third build regions are of equal width.

9. The tire of claim 8, wherein the maximum depth of the first and third build zones is Hf and the maximum depth of the second build zone is He, wherein He is 25% -40% of Hf.

10. A tyre as claimed in claim 3, wherein the crown sipes are equidistant from the longitudinal main grooves on both sides.