CN113043794B

CN113043794B - Tire with a tire cover

Info

Publication number: CN113043794B
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: 2023-09-29
Anticipated expiration: 2041-03-03
Also published as: CN113043794A

Abstract

The application 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 the tire shoulder, the cutter groove is a groove extending on the tire crown surface of the tire shoulder groove, 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 that the tire crown is divided into small broken shapes, the rigidity is reduced, and the drainage performance is ensured.

Description

Tire with a tire cover

Technical Field

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

Background

In the prior art, the patterns on the tire comprise transverse grooves and cutter grooves which are arranged in a specification pitch manner, so that the arranged transverse grooves and cutter grooves are usually penetrated into a circumferential longitudinal main groove, and when the tire is braked, longitudinal force generated along with deformation of the 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, and the more the transverse grooves and cutter grooves are added on the tire pattern blocks, the larger the edge effect is, and the larger the friction force between the tire pattern blocks and the road surface is, thereby shortening the braking distance.

However, the tire blocks are divided into small blocks by the excessive lateral grooves and sipes that increase the penetration, which results in a decrease in tread rigidity and a decrease in longitudinal force during tire braking.

Disclosure of Invention

To above-mentioned problem, a tire has been proposed, be provided with vertical main slot on the tire, the tire shoulder slot, sword groove, shoulder sword groove and crown sword groove, the shoulder slot is the recess of setting at the tire shoulder, sword groove is the recess that the shoulder slot extends on the crown face, and including connecting the crown between sword groove and the vertical main slot, make not link up between sword groove and the main slot, set up curved crown sword groove again on the decorative pattern piece, the crown has been solved and has been separated into garrulous little shape, lead to the problem that rigidity reduces, drainage performance has still been guaranteed simultaneously.

In one embodiment of the application, a tire, a crown, a shoulder and a sidewall are disclosed, the crown, the shoulder and the sidewall form the surface of the tire, the crown is a surface perpendicular to the circular cross section of the tire, the sidewall is a surface parallel to the circular cross section of the tire, and the shoulder is the connection of the crown and the sidewall; the longitudinal main grooves are formed in the surface of the tire crown, are grooves formed in the circumferential direction of the tire crown, and are formed in a plurality of pieces; a block, being said crown portion between a plurality of said longitudinal main grooves; further comprises: the tire shoulder grooves are grooves formed in the direction perpendicular to the circular cross section of the tire, a connecting tire crown is arranged between the tire shoulder grooves and the longitudinal main grooves, the connecting tire crown and the tire crown are of the same curved surface, the tire shoulder grooves are formed in a plurality, the tire shoulder grooves are arranged in a circumferential array, and the tire shoulder grooves do not penetrate through the longitudinal grooves.

In one embodiment of the present application, further comprising: the cutter groove is arranged between the tire shoulder groove and the connecting crown, the cutter groove is a groove in the extending direction of the tire shoulder groove, one end of the cutter groove is communicated with the tire shoulder groove, the other end of the cutter groove is not communicated with the longitudinal groove, and the connecting crown is used for ensuring that the cutter groove is not communicated with the longitudinal main groove;

the tire shoulder cutter grooves are formed in the tire crown and between the two tire shoulder grooves, and the two end parts of the tire shoulder cutter grooves are not communicated with the longitudinal grooves.

In one embodiment of the present application, further comprising: the tread cutter groove is a groove formed in the pattern block, the tread cutter groove is an arc line in the trend on the tread surface, the tread cutter groove is provided with a plurality of circumferentially arrayed on the pattern block, two ends of the tread cutter groove are not communicated with the longitudinal groove, the tread cutter groove is composed of a first construction area, a second construction area and a third construction area, the first construction area and the third construction area are arranged at two ends, the second construction area is communicated with the first construction area and the second construction area, the depth of the first construction area and the depth of the third construction area are larger than the depth of the second construction area, and the widths of the first construction area, the second construction area and the third construction area are equal.

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

In one embodiment of the application, the sipe depth is 50% -75% of the shoulder groove depth.

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 an end of the sipe near the longitudinal main groove has a distance Lc from the longitudinal main groove, where la=lb=lc.

In one embodiment of the present application, the shoulder sipe end portion near the longitudinal main groove side is distant from the longitudinal main groove by Ld, which is 20% -30% of La.

In one embodiment of the application, the first and third structured regions have a maximum depth of Hf and the second structured region has a maximum depth of He, where He is 25% -40% of Hf.

The beneficial effects of the application are as follows:

the tire water drainage performance is ensured by arranging the tire shoulder groove and the cutter groove; the cutter groove is not communicated with the main groove of the longitudinal main groove, and the cutter groove of the crown is arc-shaped, so that the tires are prevented from being separated into small blocks, the rigidity of the tires is improved, and the braking distance is shortened.

Drawings

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

FIG. 2 is an expanded view of a tread in an embodiment of the application;

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

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

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

fig. 6 is a side view of a crown sipe in an embodiment of the present application.

In the figure, 1, the crown; 2. shoulder; 3. a sidewall; 4. a longitudinal main groove; 5. a pattern block; 6. shoulder grooves; 7. a knife slot; 8. shoulder knife grooves; 9. a crown knife groove; 91. a first constructor; 92. a second build region; 93. and a third build region.

Detailed Description

The following describes in further detail the embodiments of the present application with reference to the drawings and examples. The following examples are illustrative of the application and are not intended to limit the scope of the application.

In the description of the present application, it should 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 the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

The terms "first," "second," and the like, 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 defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

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

The following is a description of preferred embodiments of the application, taken in conjunction with the accompanying drawings.

In some embodiments of the present application, as shown in fig. 1, there is provided a tire comprising a crown 1, a shoulder 2, sidewalls 3, longitudinal main grooves 4 and blocks 5 separated by the longitudinal main grooves 4, and further comprising shoulder grooves 6, sipes 7, shoulder sipes 8 and crown sipes 9.

Wherein the crown 1, the shoulder 2 and the sidewall 3 form the surface of the tire, the crown 1 is the surface vertical to the circular cross section of the tire, and when the tire is used, the crown 1 is contacted with the ground; the tire side 3 is a surface parallel to the circular section of the tire, the tire side 3 is perpendicular to the tire crown 1, the connecting part of the tire crown 1 and the tire side 3 is a tire shoulder 2, and the tire shoulder 2 is in a perpendicular structure.

The longitudinal main grooves 4 are arranged on the surface of the crown 1, a plurality of longitudinal main grooves 4 are arranged, the longitudinal main grooves 4 are shaped as grooves formed in the circumferential direction of the crown 1, and a plurality of pattern blocks 5 arranged in a circumferential array are obtained after the crown 1 among the longitudinal main grooves 4 is partially separated.

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

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

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

It should be noted that, the more grooves and knife grooves 7 on the tire are, the more obvious the edge effect is, the shorter the braking distance of the motor vehicle is, but at the same time, the too many grooves and knife grooves 7 can separate the tire crown 1 into a plurality of small blocks which are finely divided to affect the rigidity of the tire, so that the tire crown 1 is connected between the tire shoulder grooves 6 and the longitudinal main grooves 4, the tire shoulder grooves 6 and the longitudinal main grooves 4 are prevented from being communicated, the tire crown 1 is prevented from being separated into small blocks which are finely divided by the grooves, the durability is improved, the number of the grooves is ensured, the enough edge effect is ensured, and the braking performance of the tire is improved.

It should be noted that, the blade grooves 7 are provided between the shoulder grooves 6 and the longitudinal main grooves 4, and the shoulder blade grooves 8 are also provided on the two shoulder grooves 6, which increases the drainage performance of the tire

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

In some embodiments of the application, as shown in fig. 3, the length of the shoulder groove 6 in the plane of the crown 1 is set to La, the length of the sipe 7 is set to Lb, and the distance from the end of the sipe 7 on the side close to the longitudinal main groove 4 is set to LC, where la=lb=lc.

In some embodiments of the application, as shown in fig. 4, the end of the shoulder sipe 8 near the side of the longitudinal main groove is a distance Ld from the longitudinal main groove 4, ld being 20% -30% of La.

In some embodiments of the application, as shown in fig. 1 and 5, the tire further comprises a crown sipe 9, the crown sipe 9 is a groove provided on the block 5, the crown sipe 9 extends in an arc on the surface of the crown 1, and the distances from the crown sipe 9 to the longitudinal main grooves 4 on both sides are equal, in one embodiment of the application, the crown sipe 9 extends in a "opposite hook" on the surface of the crown 1.

The crown sipe 9 is provided in plurality on the block 5, and is circumferentially arrayed on the block 5.

It should be noted that, through setting up crown sword groove 9 on the decorative pattern piece 5 for provide multiple marginal effect, improve the braking performance of tire, set up crown sword groove 9 to "to collude" formula simultaneously, can avoid using after the friction for a long time, crown sword groove 9 fracture separates the problem of decorative pattern piece 5 for the polylith.

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

The first structured zone, the second structured zone 92 and the third structured zone 93 are of equal width.

Various embodiments are derived from the above examples:

example 1:

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

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 in 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, cutter grooves 7 are arranged in the extending direction of the shoulder groove 6, shoulder cutter grooves 8 are arranged on the two shoulder grooves 6, and crown cutter grooves 9 are arranged on pattern blocks 5 between the longitudinal main grooves 4.

According to the application, a series of braking and durability tests are performed by selecting the well-known 185R14C specification, and the experimental results in the table are obtained, wherein the larger the numerical value is, the more excellent the representative performance is.

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

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present application should be included in the scope of the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.

Claims

1. A tire, comprising:

the tire comprises a tire crown, tire shoulders and tire sidewalls, wherein the tire crown and the tire sidewalls form the surface of the tire, the tire crown is a surface perpendicular to the circular cross section of the tire, the tire sidewalls are surfaces parallel to the circular cross section of the tire, and the tire shoulders are connecting parts of the tire crown and the tire sidewalls;

the longitudinal main grooves are formed in the surface of the tire crown, are grooves formed in the circumferential direction of the tire crown, and are formed in a plurality of pieces;

a block, being said crown portion between a plurality of said longitudinal main grooves;

characterized by further comprising:

the tire shoulder grooves are grooves formed in the direction perpendicular to the circular cross section of the tire, a connecting tire crown is arranged between the tire shoulder grooves and the longitudinal main grooves, the connecting tire crown and the tire crown are of the same curved surface, a plurality of tire shoulder grooves are formed in the tire shoulder, the tire shoulder grooves are arrayed in the circumferential direction, and the tire shoulder grooves do not penetrate through the longitudinal grooves;

the cutter groove is arranged between the tire shoulder groove and the connecting crown, the cutter groove is a groove in the extending direction of the tire shoulder groove, one end of the cutter groove is communicated with the tire shoulder groove, the other end of the cutter groove is not communicated with the longitudinal groove, and the connecting crown is used for ensuring that the cutter groove is not communicated with the longitudinal main groove;

the tire shoulder cutter grooves are arranged on the tire crown and between the two tire shoulder grooves, and the two end parts of the tire shoulder cutter grooves are not communicated with the longitudinal grooves;

the tread cutter groove is a groove formed in the pattern block, the tread cutter groove is an arc line in the trend on the tread surface, the tread cutter groove is provided with a plurality of circumferentially arrayed on the pattern block, two ends of the tread cutter groove are not communicated with the longitudinal groove, the tread cutter groove is composed of a first construction area, a second construction area and a third construction area, the first construction area and the third construction area are arranged at two ends, the second construction area is communicated with the first construction area and the second construction area, the depth of the first construction area and the depth of the third construction area are larger than the depth of the second construction area, and the widths of the first construction area, the second construction area and the third construction area are equal.

2. The tire of claim 1, wherein the shoulder groove depth is 75% -90% of the longitudinal main groove depth.

3. The tire of claim 1, wherein the sipe depth is 50% -75% of the shoulder groove depth.

4. Tyre according to claim 1, characterized in that the shoulder grooves have a length La on one side of the crown, the sipes have a length Lb, and the ends of the sipes on the side close to the longitudinal main grooves have a distance Lc from the longitudinal main grooves, where La = Lb = Lc.

5. The tire according to claim 4, wherein a distance from an end of the shoulder sipe near the longitudinal main groove side to the longitudinal main groove is Ld, ld being 20% -30% of La.

6. The tire of claim 1 wherein the first and third build regions have a maximum depth of Hf and the second build region has a maximum depth of He, wherein He is 25% -40% of Hf.