CN110654176A

CN110654176A - Tyre for vehicle

Info

Publication number: CN110654176A
Application number: CN201911113558.XA
Authority: CN
Inventors: 陆扬; 张军
Original assignee: Cheng Shin Tire and Rubber China Co Ltd
Current assignee: Cheng Shin Tire and Rubber China Co Ltd
Priority date: 2019-11-14
Filing date: 2019-11-14
Publication date: 2020-01-07

Abstract

The invention discloses a tire, wherein a plurality of transverse grooves are arranged on a tire tread of the tire, each transverse groove is provided with two groove walls facing to each other, a plurality of convex blocks and a plurality of grooves are respectively arranged on the two groove walls of each transverse groove, and the convex blocks and the grooves on the two groove walls of the same transverse groove are embedded one by one and are not contacted with each other; the convex blocks and the grooves on each groove wall are arranged in n rows, the convex blocks and the grooves on each row are alternately arranged one by one along the transverse direction, and each row of at least one transverse groove and the same row of the other transverse groove are staggered by a certain distance M along the radial direction of the tire; wherein n is more than or equal to 2, and M is more than 0. This scheme can promote the rigidity of tire tread to can effectively restrain the tread and warp, and can guarantee that the tread has tortuous decorative pattern to exist all the time when the wearing and tearing of different degrees take place at reasonable within range, thereby can reduce the wearing and tearing and grab the harmful effects of land fertility, promote the land fertility of grabbing of tire to the tire.

Description

Tyre for vehicle

Technical Field

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

Background

After a tire has been in use for a period of time, the tread wears, which results in a decrease in the grip of the tire.

After a tire has been in use for a period of time, the tread may also become deformed, which may exacerbate tread wear.

How to inhibit the deformation of the tread and improve the tire grip is a technical problem to be solved by the technical personnel in the field.

Disclosure of Invention

In order to solve the technical problems, the invention provides a tire, wherein a plurality of transverse grooves are arranged on a tire tread of the tire, each transverse groove is provided with two groove walls facing to each other, a plurality of convex blocks and a plurality of grooves are respectively arranged on the two groove walls of each transverse groove, and the convex blocks and the grooves on the two groove walls of the same transverse groove are embedded one by one and are not contacted with each other;

the convex blocks and the grooves on each groove wall are arranged in n rows, the convex blocks and the grooves on each row are alternately arranged one by one along the transverse direction, and each row of at least one transverse groove and the same row of the other transverse groove are staggered by a certain distance M along the radial direction of the tire;

wherein n is more than or equal to 2, and M is more than 0.

The two groove walls of the transverse groove of the tire are interlocked through the mutually embedded groove and the mutually embedded lug, so that the rigidity of the tire tread can be improved, and the deformation of the tire tread can be effectively inhibited. And each row of a transverse groove of the tire and the same row of another transverse groove of the tire are staggered by a certain distance along the radial direction of the tire, so that when the tire tread is worn to different degrees in a reasonable range, zigzag patterns exist on the tire tread all the time, the adverse effect of the wear on the tire grip force can be reduced, and the grip force of the tire is improved

The tire as described above, the lugs in each row are equally spaced in the lateral direction, the distance between adjacent lugs is P1, and the range of P1 is: p1 is more than or equal to 1mm and less than or equal to 10 mm.

The tire as described above, the grooves in each row are equally spaced in the lateral direction, the spacing distance between adjacent grooves is P2, and the range of P2 is: p2 is more than or equal to 1mm and less than or equal to 10 mm.

The surface of the lug comprises a first side surface, a second side surface and a third side surface which are sequentially connected from the tire tread to the tire core, wherein the first side surface, the second side surface and the third side surface extend along the transverse direction; the second side face is an arc-shaped face, and the first side face, the third side face, the first end face and the second end face are all planes;

the wall surface of the groove comprises a first side wall, a second side wall and a third side wall which are sequentially connected from the tire tread to the tire core of the tire, the first side wall, the second side wall and the third side wall extend along the transverse direction, and the first end wall is connected to one end of the first side wall, the second end wall is connected to the other end of the first side wall, the second side wall and the third side wall; the second side wall is an arc-shaped wall, and the first side wall, the third side wall, the first end wall and the second end wall are all flat walls.

In the tire, the included angle between the first side surface and the groove wall body of the groove wall of the transverse groove is alpha, and the included angle between the first side surface and the groove wall body of the groove wall of the transverse groove is also alpha; the range of α is: alpha is more than or equal to 25 degrees and less than or equal to 40 degrees.

In the tire, one side of the groove wall of the transverse groove, where the first end surface and the second end surface of the same bump are far away from, is inclined oppositely, the included angle between the first end surface and the second end surface is beta, and the range of beta is as follows: beta is more than or equal to 20 degrees and less than or equal to 80 degrees.

In the tire, the distance between the extended intersection line of the first side surface and the second side surface of the same lug and the side line of the first side surface far away from the tire tread along the depth direction of the transverse groove is D1; the distance between the extended intersection of the first sidewall and the second sidewall of the same groove and the side edge of the first sidewall away from the tire tread in the depth direction of the transverse groove is also D1, and the range of D1 is: d1 is not less than 1.5mm and not more than 5 mm.

In the tire, the distance between the extended intersection line of the first side surface and the second side surface of the same lug and the side line of the second side surface far away from the tire tread along the depth direction of the transverse groove is D2; the distance between the extended intersection of the first and second sidewalls of the same groove and a side edge of the second sidewall away from the tire tread in the depth direction of the transverse groove is also D2, D2 ranging from: d2 is (0.2-1) D1.

In the tire described above, the distance between the groove wall bodies of the two groove walls of the lateral groove in the width direction of the lateral groove is W1, and the range of W1 is: w1 is (0.03-0.08) × W, wherein W is the width of the widest groove on the tread.

In the tire as described above, the distance between the groove and the lug on the same groove wall of the lateral groove in the width direction of the lateral groove is W2, and the range of W2 is: w2 is (2-5) W1.

Drawings

FIG. 1 is a perspective view of a block of one embodiment of a tire provided by the present invention.

FIG. 2 is a schematic view of FIG. 1 cut in two at a transverse groove;

FIG. 3 is a view taken along line A of FIG. 2;

FIG. 4 is a transverse view of FIG. 1;

FIGS. 5 a-5 f are schematic views of the block of FIG. 1 worn to the a-, b-, c-, d-, e-, and f-plane positions, respectively;

FIG. 6 is an enlarged view of the bumps and grooves of FIG. 5;

FIG. 7 is a laterally enlarged view of one of the walls of the lateral groove;

fig. 8 is a sectional view taken along line B-B of fig. 5.

The reference numerals are explained below:

1, a transverse groove and 11 groove walls;

2 bump, 21 first side, 22 second side, 23 third side, 24 first end, 25 second end;

3 grooves, 31 first side wall, 32 second side wall, 33 third side wall, 34 first end wall, 35 second end wall.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution of the present invention is further described in detail below with reference to the accompanying drawings and the detailed description.

It should be noted that the lateral direction in the above and below refers to a direction parallel or substantially parallel to the axial direction of the tire.

As shown in fig. 1, the Tread of the tire is provided with a plurality of (i.e. two or more) transverse grooves 1, and specifically, the transverse grooves 1 are provided on blocks (Tread blocks) of the tire Tread. In the figure, only one block is shown, and three transverse grooves 1 are arranged on the block, in practical implementation, the number of the transverse grooves 1 arranged on each block is not limited to three, for example, one, two, four, five or more transverse grooves may be arranged flexibly according to the size of the block, and certainly, the transverse grooves 1 may not be arranged on individual blocks.

As shown in fig. 1, the transverse groove 1 has two groove walls 11 facing one another. As shown in fig. 2 and 3, the two groove walls 11 are each provided with a plurality of projections 2 and a plurality of recesses 3,

as shown in fig. 4, the protrusions 2 and the grooves 3 on the two groove walls 11 of the same transverse groove 1 are engaged one by one, and the mutually engaged protrusions 2 and grooves 3 are not in contact with each other, that is, a gap is left between the mutually engaged protrusions 2 and grooves 3. With this arrangement, the two groove walls 11 of the lateral groove 1 are interlocked by the mutually fitted groove 3 and projection 2, whereby the rigidity of the tire tread can be enhanced, and the tread deformation can be effectively suppressed.

As shown in fig. 2 and 3, the grooves 3 and the protrusions 2 on each groove wall 11 are arranged in n rows, and the grooves 3 and the protrusions 2 on each row are arranged alternately one by one in the transverse direction, that is, a groove 3 is arranged between every two adjacent protrusions 2 on each row, and a protrusion 2 is arranged between every two adjacent grooves 3. In the figure, the grooves 3 and the projections 2 on each groove wall 11 are arranged in 4 rows (that is, n is 4), and the 1 st row, the 2 nd row, the 3 rd row and the 4 th row are arranged in order from the tire center side to the tire tread side, and in actual implementation, n is not limited to 4 as long as n is 2 or more.

As shown in fig. 4, each row of at least one transverse groove 1 is offset from the same row of another transverse groove 1 by a distance M in the radial direction of the tire, M being greater than 0. As will be understood from fig. 4, in fig. 4, the 1 st, 2 nd, 3 rd, and 4 th rows of the left lateral groove 1 are respectively offset from the 1 st, 2 nd, 3 rd, and 4 th rows of the middle lateral groove 1 by a distance M in the tire radial direction. Set up like this, can guarantee that the tread has tortuous decorative pattern to exist all the time when the wearing and tearing of equidimension takes place for reasonable within range on the tread to can reduce the harmful effects that wearing and tearing grabbed the land fertility to the tire. As will be understood in connection with fig. 5 a-5 f, when the block is worn down to the a-plane, the two lateral grooves 1 present a zigzag pattern on the a-plane; when the block is worn to b-plane, the three lateral grooves 1 present a zigzag pattern on the b-plane; when the block is worn to the c-plane, one lateral groove 1 presents a zigzag pattern on the c-plane; when the block is worn to the d surface, the two transverse grooves 1 present a zigzag pattern on the d surface; when the block is worn to the e face, one lateral groove 1 presents a zigzag pattern on the e face; when the block is worn down to the f-plane, the two lateral grooves 1 present a zigzag pattern on the f-plane.

Therefore, the tire with the structure has the advantages of high rigidity, good deformation resistance, wear resistance, good ground holding force and the like.

Preferably, as shown in fig. 4, the distance between the groove wall bodies of the two groove walls 11 of the same transverse groove 1 (i.e. the positions of the groove walls 11 where the groove 3 and the projection 2 are not provided) in the width direction of the transverse groove 1 is W1, and the range of W1 is: w1 is (0.03-0.08) × W, wherein W is the width of the widest groove on the tread. The arrangement is favorable for ensuring the rigidity of the tire.

Preferably, as shown in fig. 4, the maximum distance between the groove 3 and the projection 2 on the same groove wall 11 of the transverse groove 1 in the width direction of the transverse groove 1 is W2, and the range of W2 is: w2 is (2-5) W1. The arrangement is favorable for ensuring the rigidity of the tire.

Preferably, as shown in fig. 6, the surface of the bump 2 includes a first side surface 21, a second side surface 22 and a third side surface 23, and the first side surface 21, the second side surface 22 and the third side surface 23 all extend in the transverse direction and are connected in sequence from the tire tread side to the tire core side. The surface of the bump 2 further includes a first end surface 24 connected to one end of the first side surface 21, the second side surface 22, and the third side surface 23, and a second end surface 25 connected to the other end of the three. The second side 22 is an arc-shaped surface, that is, the cross section of the second side 22 is an arc. The first side surface 21, the third side surface 23, the first end surface 24, and the second end surface 25 are all planar.

Meanwhile, as shown in fig. 6, the wall surfaces of the groove 3 include a first sidewall 31, a second sidewall 32, and a third sidewall 33, and the first sidewall 31, the second sidewall 32, and the third sidewall 33 each extend in the transverse direction and are connected in sequence from the tire tread side to the tire core side. The walls of the recess 3 further comprise a first end wall 34 connected to one end of the first 31, second 32 and third 33 side walls and a second end wall 35 connected to the other end of the three. Wherein the second sidewall 32 is an arc-shaped wall, that is, the cross section of the second sidewall 32 is arc-shaped. The first side wall 31, the third side wall 33, the first end wall 34 and the second end wall 35 are all flat walls.

The convex block 2 and the groove 3 in the form can ensure that the degree of abrasion between the convex block 2 and the groove 3 which are mutually embedded when the tire bears pressure is smaller, and can ensure that the two groove walls 11 of the transverse groove 1 can still be effectively interlocked after the tire is used for a longer time, thereby ensuring that the tire can always keep larger rigidity in the longer time.

Preferably, as shown in fig. 7, the extended intersection line of the first side surface 21 and the second side surface 22 of the same lug 2 and a side line of the first side surface 21 away from the tire tread are located at a distance D1 along the depth direction of the transverse groove 1. The extended intersection of the first sidewall 31 and the second sidewall 32 of the same groove 3, and the side edge of the first sidewall 31 away from the tire tread, are also at a distance D1 in the depth direction of the lateral groove 1. Preferably, the range of D1 is: d1 is not less than 1.5mm and not more than 5 mm. This arrangement is advantageous for improving the interlocking reliability of the two groove walls 11 of the lateral groove 1.

Specifically, as shown in fig. 7, the extended intersection line of the first side surface 21 and the second side surface 22 of the same lug 2 and a side line of the second side surface 22 away from the tire tread are located at a distance D2 along the depth direction of the transverse groove 1. The extended intersection of the first 31 and second 32 sidewalls of the same groove 3, along with the side edge of its second sidewall 32 facing away from the tread of the tire, is also at a distance D2 in the depth direction of the lateral groove 1. Preferably, the range of D2 is: d2 is (0.2-1) D1. This arrangement is advantageous for improving the interlocking reliability of the two groove walls 11 of the lateral groove 1.

Specifically, as shown in fig. 7, the first side surface 21 forms an included angle α with a groove wall body of the transverse groove 1 where the first side surface is located (i.e., a portion of the groove wall 11 where the protrusion 2 and the groove 3 are not disposed), the first side surface 31 also forms an included angle α with a groove wall body of the transverse groove 1 where the first side surface is located, and the included angle α is within a range: alpha is more than or equal to 25 degrees and less than or equal to 40 degrees. Set up like this, can prevent to vulcanize the drawing of patterns and cause the problem that lug 2 and recess 3 wear and dislocation, can guarantee that lug 2 and recess 3 of the tire after the shaping can the one-to-one gomphosis and the smooth no wire drawing of groove face of lug 2 and recess 3.

Preferably, as shown in fig. 8, the sides (upper side in fig. 8) of the first end surface 24 and the second end surface 25 of the protrusion 2, which are far away from the groove wall 11 of the transverse groove 1, are inclined toward each other, that is, the side of the first end surface 24 of the protrusion 2, which is far away from the groove wall 11 of the transverse groove 1, is inclined toward the second end surface 25, and the side of the second end surface 25 of the protrusion 2, which is far away from the groove wall 11 of the transverse groove 1, is inclined toward the first end surface 24. Preferably, the first end surface 24 and the second end surface 25 form an included angle β, and the included angle β is in the range of: beta is more than or equal to 20 degrees and less than or equal to 80 degrees. In this way, it is advantageous to improve the interlocking reliability of the two groove walls 11 of the lateral groove 1.

In fig. 8, the first end wall 34 of the groove 3 is the second end face 25 of the bump 2 adjacent to it, and the second end wall 35 of the groove 3 is the first end face 24 of the bump 2 adjacent to it, so that the angle between the first end face 24 and the second end face 25 of the same bump 2 is also β.

Preferably, as shown in fig. 8, the bumps 2 in each row are arranged at equal intervals in the transverse direction, and the interval between adjacent bumps 2 is P1. Preferably, the range of P1 is: p1 is more than or equal to 1mm and less than or equal to 10 mm. In this way, it is advantageous to improve the interlocking reliability of the two groove walls 11 of the lateral groove 1 and to improve the grip performance of the tire.

Preferably, as shown in fig. 8, the grooves 3 in each row are equally spaced in the transverse direction, and the adjacent grooves 3 are spaced apart by a distance P2. Preferably, the range of P2 is: p2 is more than or equal to 1mm and less than or equal to 10 mm. In this way, it is advantageous to improve the interlocking reliability of the two groove walls 11 of the lateral groove 1 and to improve the grip performance of the tire.

The above description provides a tire according to the present invention. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. A tire is characterized in that a plurality of transverse grooves are arranged on a tire tread of the tire, each transverse groove is provided with two groove walls facing to each other, a plurality of convex blocks and a plurality of grooves are respectively arranged on the two groove walls of each transverse groove, and the convex blocks and the grooves on the two groove walls of the same transverse groove are embedded one by one and are not contacted with each other;

wherein n is more than or equal to 2, and M is more than 0.

2. The tyre according to claim 1, wherein said lugs of each row are equally spaced apart in the transverse direction, adjacent lugs being spaced apart by a distance P1, P1 ranging from: p1 is more than or equal to 1mm and less than or equal to 10 mm.

3. The tyre according to claim 1, wherein the grooves of each row are equally spaced apart in the transverse direction, adjacent grooves being spaced apart by a distance P2, P2 ranging from: p2 is more than or equal to 1mm and less than or equal to 10 mm.

4. The tire of claim 1, wherein the surface of the projection comprises a first side surface, a second side surface and a third side surface which are connected in sequence from the tire tread to the tire core, wherein the first side surface, the second side surface and the third side surface all extend in the transverse direction, and further comprises a first end surface connected to one end of the first side surface, a second end surface connected to the other end of the first side surface, the second side surface and the third end surface; the second side face is an arc-shaped face, and the first side face, the third side face, the first end face and the second end face are all planes;

5. The tire according to claim 4, wherein the angle between the first side surface and the groove wall body of the groove wall of the transverse groove is α, and the angle between the first side surface and the groove wall body of the groove wall of the transverse groove is α; the range of α is: alpha is more than or equal to 25 degrees and less than or equal to 40 degrees.

6. The tire according to claim 4, wherein the first end face and the second end face of the same lug are inclined to each other at a side away from the groove wall of the transverse groove, and the included angle between the first end face and the second end face is β, where β is in the range of: beta is more than or equal to 20 degrees and less than or equal to 80 degrees.

7. The tire according to claim 4, wherein the extended intersection of said first side and said second side of the same lug and a side edge of said first side facing away from the tire tread are at a distance D1 in the depth direction of said transverse groove; the distance between the extended intersection of the first sidewall and the second sidewall of the same groove and the side edge of the first sidewall away from the tire tread in the depth direction of the transverse groove is also D1, and the range of D1 is: d1 is not less than 1.5mm and not more than 5 mm.

8. The tire according to claim 7, wherein the distance between the extended intersection of the first side surface and the second side surface of the same lug and a side edge of the second side surface, which is away from the tire tread, in the depth direction of the transverse groove is D2; the distance between the extended intersection of the first and second sidewalls of the same groove and a side edge of the second sidewall away from the tire tread in the depth direction of the transverse groove is also D2, D2 ranging from: d2 is (0.2-1) D1.

9. Tyre according to any one of claims 1 to 8, characterized in that the distance of the groove wall bodies of the two groove walls of the transverse groove in the width direction of the transverse groove is W1, W1 ranging from: w1 is (0.03-0.08) × W, wherein W is the width of the widest groove on the tread.

10. The tire of claim 9 wherein the distance between the groove and the lug on the same wall of the lateral groove in the width direction of the lateral groove is W2, and W2 ranges from: w2 is (2-5) W1.