Tire tread structure

Abstract

The utility model provides a tire tread structure. The tire tread structure comprises a plurality of longitudinal grooves, the longitudinal grooves extend in the circumferential direction of a tire, and the longitudinal grooves are formed in the width direction of the tire at intervals so as to divide a tire tread into tire shoulder pattern parts and a plurality of middle pattern parts located between the two tire shoulder pattern parts; the first concave part is arranged on the middle pattern part, and one end of the first concave part extends to the side surface of the middle pattern part; the sheet-shaped structures are arranged in the middle pattern part, the multiple sheet-shaped structures are arranged in the circumferential direction of the tire at intervals, and one end of at least one sheet-shaped structure extends into the first concave part; wherein the contact surface between the tire and the driving surface has a width T, and the width of each longitudinal groove, W1 and the width T meet the condition that W1 is greater than or equal to 0.223 T and less than or equal to 0.303 T. The tire tread structure effectively solves the problem that a tire tread structure in the prior art cannot simultaneously give consideration to the control performance and the comfort performance of a tire.

Description

Technical Field

[0001] The utility model relates to the technical field of tires, in particular to a tire tread structure. Background Art

[0002] At present, with the rapid development of the automobile industry, the requirements for various tire performance are also constantly increasing. For example, in order to improve the riding comfort of drivers or passengers, the tire tread is required to have better quietness and lower rigidity, and in order to improve driving safety, the tire tread is required to have excellent braking performance and handling performance.

[0003] However, the pattern structure on the tire tread in the prior art often only focuses on improving one-sided performance, and cannot take into account both the handling performance and comfort performance of the tire to meet the needs of users. Utility Model Content

[0004] The main purpose of the utility model is to provide a tire tread structure to solve the problem that the tire tread structure in the prior art cannot take into account both the handling performance and the comfort performance of the tire.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a tire tread structure, including: a plurality of longitudinal grooves, each of which extends along the circumference of the tire, and the plurality of longitudinal grooves are arranged at intervals along the width direction of the tire to separate the tread into a shoulder pattern portion and a plurality of intermediate pattern portions located between the two shoulder pattern portions; a first recessed portion, which is arranged on the intermediate pattern portion, and one end of the first recessed portion extends to the side of the intermediate pattern portion; a sheet structure, which is arranged in the intermediate pattern portion, and there are a plurality of sheet structures, and the plurality of sheet structures are arranged at intervals along the circumference of the tire, and one end of at least one sheet structure extends into the first recessed portion; wherein the contact surface between the tire and the driving surface has a width T, and the width of each longitudinal groove and W1 satisfy the following relationship with the width T: 0.223T≤W1≤0.303T.

[0006] Furthermore, the middle pattern portion close to the inner side of the tire is an inner crown pattern portion, the first recess is arranged on the inner crown pattern portion, the multiple sheet structures include a first sheet structure, the first sheet structure is arranged in the inner crown pattern portion, one end of the first sheet structure extends into the first recess, the first recess extends away from one end of the first sheet structure to a side surface of the inner crown pattern portion, and the other end of the first sheet structure extends into the longitudinal groove through the other side surface of the inner crown pattern portion; the first sheet structure is arranged at a first angle A1 with respect to the width direction of the tire, and the first angle A1 satisfies: 20°≤A1≤24°.

[0007] Furthermore, the multiple sheet structures also include: a second sheet structure, which is arranged on the inner crown pattern portion, and both ends of the second sheet structure respectively extend into the longitudinal grooves located on both sides of the inner crown pattern portion, and the second sheet structure is arranged at a second angle A2 with the width direction of the tire, and the second angle A2 satisfies: 20°≤A2≤24°; wherein, there are multiple second sheet structures, and the multiple second sheet structures are arranged at intervals along the circumferential direction of the tire, and the first sheet structure and the first recess are both arranged between two adjacent second sheet structures.

[0008] Furthermore, the middle pattern portion that overlaps with at least part of the center plane C of the tire is the center pattern portion, and the multiple sheet structures also include: a third sheet structure, which is arranged on the center pattern portion, and the two ends of the third sheet structure respectively extend into the longitudinal grooves located on both sides of the center pattern portion, and there are multiple third sheet structures, and the multiple third sheet structures are arranged at intervals along the circumference of the tire; the third sheet structure includes a first sub-sheet structure and a second sub-sheet structure that are connected to each other, and the first sub-sheet structure and the second sub-sheet structure are arranged at an angle; wherein the tire tread structure also includes a second recess, the second recess is arranged on the center pattern portion and is located between two adjacent third sheet structures, one end of the second recess extends to a side surface of the center pattern portion, and the other end of the second recess has a preset distance from the other side surface of the center pattern portion.

[0009] Furthermore, the middle pattern portion close to the outer side of the tire is an outer crown pattern portion, and the multiple sheet structures also include: a fourth sheet structure, which is arranged in the outer crown pattern portion, and the two ends of the fourth sheet structure respectively extend into the longitudinal grooves located on both sides of the outer crown pattern portion, and there are multiple fourth sheet structures, and the multiple fourth sheet structures are arranged at intervals along the circumference of the tire; wherein, the tire tread structure also includes a third recess, which is arranged on the outer crown pattern portion, and one end of the third recess extends to a side surface of the outer crown pattern portion, and the other end of the third recess has a preset distance from the other side surface of the outer crown pattern portion; wherein, the multiple second recesses are arranged in a one-to-one correspondence with the multiple third recesses.

[0010] Furthermore, the plurality of sheet-like structures further include: a fifth sheet-like structure disposed in the second recess; and / or a sixth sheet-like structure disposed in the third recess.

[0011] Furthermore, the two shoulder pattern portions include an inner shoulder pattern portion and an outer shoulder pattern portion, and the tire tread structure further includes: a fourth recess, which is arranged on the inner shoulder pattern portion, one end of the fourth recess extends to the side of the inner shoulder pattern portion close to the center pattern portion, and the other end of the fourth recess is at a preset distance from the side of the inner shoulder pattern portion away from the middle pattern portion, and there are a plurality of fourth recesses, and the plurality of fourth recesses are arranged at intervals along the circumferential direction of the tire; wherein, along the width direction of the tire, the fourth recess is staggered with the first recess, and the fourth recess is staggered with the first recess. The fourth recess is arranged at a third angle A3 with respect to the width direction of the tire, and the third angle A3 satisfies: 4°≤A3≤6°; the fifth recess is arranged on the outer shoulder pattern portion, and the fifth recess is arranged at a fourth angle A4 with respect to the width direction of the tire, and the fourth angle A4 satisfies: 4°≤A4≤6°; wherein the fourth recess includes a first sub-recess and a second sub-recess which are interconnected, the depth H1 of the first sub-recess satisfies: 1mm≤H1≤5mm, and the depth H2 of the second sub-recess satisfies: 5mm≤H1≤9mm.

[0012] Furthermore, the first sheet-like structure and the first recess form a partition structure, and there are multiple partition structures, which are arranged along the circumference of the tire to separate the inner crown pattern portion into multiple inner crown pattern blocks; multiple third sheet-like structures separate the center pattern portion into multiple center pattern blocks; multiple fourth sheet-like structures separate the outer crown pattern portion into multiple outer crown pattern blocks; a first sub-pattern block is formed between the inner shoulder pattern portion between two adjacent fourth recesses and a fourth recess adjacent thereto, and an inner shoulder pattern block is formed between at least two adjacent first sub-pattern blocks; a second sub-pattern block is formed between the outer shoulder pattern portion between two adjacent fifth recesses and a fifth recess adjacent thereto, and an outer shoulder pattern block is formed between at least two adjacent second sub-pattern blocks; wherein the multiple inner crown pattern blocks are arranged one-to-one with the multiple inner shoulder pattern blocks, and the multiple center pattern blocks are arranged one-to-one with the multiple inner The side shoulder pattern blocks are arranged in one-to-one correspondence, a plurality of outer crown pattern blocks are arranged in one-to-one correspondence with a plurality of inner shoulder pattern blocks, a plurality of outer shoulder pattern blocks are arranged in one-to-one correspondence with a plurality of inner shoulder pattern blocks, and a pattern group is formed between the inner shoulder pattern block and the inner crown pattern block, the center pattern block, the outer crown pattern block and the outer shoulder pattern block arranged correspondingly thereto, and the N pattern groups include a first pattern group, a second pattern group, a third pattern group, and a fourth pattern group And the fifth pattern group, the length P1 of the first pattern group, the length P2 of the second pattern group, the length P3 of the third pattern group, the length P4 of the fourth pattern group and the length P5 of the fifth pattern group satisfy: 1.04P2≤P1≤1.24P2, 1.47P2≤P3≤1.67P2, 1.33P2≤P4≤1.53P2, 1.19P2≤P5≤1.39P2; N satisfies: 34≤N≤38, N is an even number.

[0013] Furthermore, the plurality of longitudinal grooves include: a first longitudinal groove, located between the inner shoulder pattern portion and the inner crown pattern portion, the width W11 of the first longitudinal groove and the width T satisfying: 0.053T≤W11≤0.073T; a second longitudinal groove, located between the inner crown pattern portion and the center pattern portion, the width W12 of the second longitudinal groove and the width T satisfying: 0.064T≤W12≤0.084T; a third longitudinal groove, located between the center pattern portion and the outer crown pattern portion, the width W13 of the third longitudinal groove and the width T satisfying: 0.064T≤W12≤0.084T; The width T satisfies: 0.068T≤W13≤0.088T; the fourth longitudinal groove is located between the outer crown pattern portion and the outer shoulder pattern portion, and the width W14 of the fourth longitudinal groove satisfies: 0.038T≤W14≤0.058T; wherein, the width W11, the width W12, the width W13 and the width W14 satisfy: 1.31W14≤W11≤1.35W14, 1.53W14≤W12≤1.57W14, 1.62W14≤W13≤1.66W14.

[0014] Furthermore, the width W21 of the inner shoulder pattern portion satisfies the following conditions with respect to the width T: 0.174≤W21≤0.204T; the width W22 of the inner crown pattern portion satisfies the following conditions with respect to the width T: 0.113T≤W22≤0.143T; the width W23 of the center pattern portion satisfies the following conditions with respect to the width T: 0.113T≤W23≤0.143T; the width W24 of the outer crown pattern portion satisfies the following conditions with respect to the width T: 0.105T≤W24≤0.135T; the width W25 of the outer shoulder pattern portion satisfies the following conditions with respect to the width T: 0.157T≤W25≤0.187T; the width W2 1. The width W22, the width W23, the width W24 and the width W25 satisfy: 1.55W24≤W21≤1.59W24, 1.04W24≤W22≤1.08W24, 1.04W24≤W23≤1.08W24, 1.40W24≤W25≤1.44W24; the length L of the fifth recess and the width W25 satisfy: 0.81W25≤L≤0.85W25; wherein the contact surface between the tire and the ground has an area S1, and the area S2 of the tire tread structure and the area S1 satisfy: 0.67S1≤S2≤0.73S1.

[0015] According to the technical solution of the utility model, the tire tread structure includes a plurality of longitudinal grooves, each of which extends along the circumference of the tire, and the plurality of longitudinal grooves are arranged at intervals along the width direction of the tire to separate the tread into a shoulder pattern portion and a plurality of intermediate pattern portions located between the two shoulder pattern portions. The first recess is arranged on the intermediate pattern portion, and one end of the first recess extends to the side of the intermediate pattern portion. The sheet structure is arranged in the intermediate pattern portion, and there are a plurality of sheet structures, and the plurality of sheet structures are arranged at intervals along the circumference of the tire, and one end of at least one sheet structure extends into the first recess. The contact surface between the tire and the driving surface has a width T, and the width W1 of each longitudinal groove satisfies the following relationship with the width T: 0.223T≤W1≤0.303T. In this way, during the driving process of the automobile, the above arrangement ensures the drainage performance of the tire through the longitudinal grooves on the one hand, and improves the anti-slip performance of the tire; on the other hand, the water film between the tire and the ground is cut through the first recess and the sheet structure, and the friction between the tire and the ground is improved, thereby improving the wet handling of the tire. At the same time, the arrangement of the first sheet-like structure, on the one hand, increases the bite force between the tire and the ground, improves the tire's grip, shortens the braking distance of the car, and improves the tire's traction on snow, thereby improving the tire's braking performance and driving stability, and further improving the tire's handling performance. On the other hand, it weakens the rigidity of the tire pattern blocks and the stress of the tire, thereby improving the driver's driving comfort, and thus solving the problem that the tire tread structure in the prior art cannot take into account both the tire's handling performance and comfort performance. At the same time, the arrangement of the first sheet-like structure extending into the first concave portion further ensures the rigidity of the tire pattern blocks and further improves the tire's handling performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 A partial front view of an embodiment of a tire tread structure according to the present utility model is shown;

[0018] Figure 2 Shows Figure 1 A partial enlarged schematic diagram of the tire tread structure;

[0019] Figure 3 Shows Figure 1 A schematic cross-sectional view of a first longitudinal groove of a tire tread structure;

[0020] Figure 4 Shows Figure 1 A schematic cross-sectional view of a second longitudinal groove and a third longitudinal groove of a tire tread structure;

[0021] Figure 5 Shows Figure 1 A schematic cross-sectional view of a fourth longitudinal groove of a tire tread structure in FIG.

[0022] Figure 6 Shows Figure 1 A schematic cross-sectional view of a fourth concave portion and a fifth concave portion of a tire tread structure;

[0023] Figure 7 Shows Figure 1 A schematic cross-sectional view of a first concave portion of a tire tread structure;

[0024] Figure 8 Shows Figure 1 Schematic diagram of the cross-section of the second and third recesses of the tire tread structure.

[0025] The above drawings include the following reference numerals:

[0026] 10. longitudinal groove; 11. first longitudinal groove; 12. second longitudinal groove; 13. third longitudinal groove; 14. fourth longitudinal groove;

[0027] 20, shoulder pattern portion; 21, inner shoulder pattern portion; 211, inner shoulder pattern block; 2111, first sub-pattern block; 22, outer shoulder pattern portion; 221, outer shoulder pattern block; 2211, second sub-pattern block;

[0028] 30, middle tread portion; 31, inner tread crown tread portion; 311, inner tread crown tread block; 32, center tread portion; 321, center tread block; 33, outer tread crown tread portion; 331, outer tread crown tread block;

[0029] 41. The first recess; 42. The second recess; 43. The third recess; 44. The fourth recess; 441. The first sub-recess; 442. The second sub-recess; 45. The fifth recess;

[0030] 50, sheet structure; 51, first sheet structure; 52, second sheet structure; 53, third sheet structure; 531, first sub-sheet structure; 532, second sub-sheet structure; 54, fourth sheet structure; 55, fifth sheet structure; 56, sixth sheet structure;

[0031] 60, pattern group; 61, first pattern group; 62, second pattern group; 63, third pattern group; 64, fourth pattern group; 65, fifth pattern group;

[0032] 71, first chamfer; 72, second chamfer; 73, third chamfer; 74, fourth chamfer; 75, fifth chamfer; 76, sixth chamfer; 77, seventh chamfer; 78, eighth chamfer; 79, ninth chamfer;

[0033] 80. Partition structure. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0036] In the present invention, unless otherwise specified, directional words such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0037] In order to solve the problem in the prior art that the tire tread structure cannot take into account both the handling performance and the comfort performance of the tire, the present application provides a tire tread structure.

[0038] like Figures 1 to 8 As shown, the tire tread structure includes a plurality of longitudinal grooves 10, a first recess 41 and a sheet structure 50. Each longitudinal groove 10 extends along the circumference of the tire, and the plurality of longitudinal grooves 10 are arranged at intervals along the width direction of the tire to separate the tread into a shoulder pattern portion 20 and a plurality of middle pattern portions 30 located between two shoulder pattern portions 20. The first recess 41 is arranged on the middle pattern portion 30, and one end of the first recess 41 extends to the side of the middle pattern portion 30. The sheet structure 50 is arranged in the middle pattern portion 30, and there are a plurality of sheet structures 50, and the plurality of sheet structures 50 are arranged at intervals along the circumference of the tire, and one end of at least one sheet structure 50 extends into the first recess 41. The contact surface between the tire and the running surface has a width T, and the width W1 of each longitudinal groove 10 and the width T satisfy: 0.223T≤W1≤0.303T.

[0039] Applying the technical solution of this embodiment, the tire tread structure includes a plurality of longitudinal grooves 10, each of which extends along the circumference of the tire. The plurality of longitudinal grooves 10 are arranged at intervals along the width direction of the tire to separate the tread into a shoulder pattern portion 20 and a plurality of middle pattern portions 30 located between two shoulder pattern portions 20. A first recess 41 is arranged on the middle pattern portion 30, and one end of the first recess 41 extends to the side of the middle pattern portion 30. A sheet structure 50 is arranged in the middle pattern portion 30, and there are a plurality of sheet structures 50, which are arranged at intervals along the circumference of the tire, and one end of at least one sheet structure 50 extends into the first recess 41. The contact surface between the tire and the running surface has a width T, and the width W1 of each longitudinal groove 10 and the width T satisfy: 0.223T≤W1≤0.303T. In this way, during the driving process of the automobile, the above arrangement ensures the drainage performance of the tire through the longitudinal groove 10, and improves the anti-skid performance of the tire; on the other hand, the water film between the tire and the ground is cut through the first concave portion 41 and the sheet structure 50, thereby improving the friction between the tire and the ground, and thus improving the wet handling performance of the tire. At the same time, the arrangement of the first sheet structure 51 increases the bite force between the tire and the ground, improves the grip of the tire, shortens the braking distance of the automobile, and improves the snow traction of the tire, thereby improving the braking performance and driving stability of the tire, and thus improving the handling performance of the tire. On the other hand, it weakens the rigidity of the tire pattern block and the stress of the tire, thereby improving the driving comfort of the driver, and thus solving the problem that the tire tread structure in the prior art cannot take into account the handling performance and comfort performance of the tire at the same time. At the same time, the arrangement of the first sheet structure 51 extending into the first concave portion 41 further ensures the rigidity of the tire pattern block and further improves the handling performance of the tire.

[0040] In this embodiment, the sheet structure 50 is a steel sheet.

[0041] In this embodiment, the running surface is the ground.

[0042] like Figure 7 As shown, the bottom wall of the first recess 41 is an arc-shaped surface, and a side wall of the first recess 41 is arranged at an eleventh angle A11 with the normal line of the first recess 41 , and the eleventh angle A11 satisfies: A11=3°.

[0043] like Figure 1 and Figure 2As shown, the middle pattern portion 30 close to the inner side of the tire is the inner crown pattern portion 31, the first recess 41 is arranged on the inner crown pattern portion 31, and the plurality of sheet structures 50 include a first sheet structure 51, the first sheet structure 51 is arranged in the inner crown pattern portion 31, one end of the first sheet structure 51 extends into the first recess 41, the first recess 41 extends away from one end of the first sheet structure 51 to one side of the inner crown pattern portion 31, and the other end of the first sheet structure 51 extends into the longitudinal groove 10 via the other side of the inner crown pattern portion 31. The first sheet structure 51 is arranged at a first angle A1 with respect to the width direction of the tire, and the first angle A1 satisfies: 20°≤A1≤24°. In this way, the above arrangement makes the first concave portion 41 and the first sheet structure 51 arranged on the inner crown pattern portion 31. On the one hand, the first concave portion 41 cuts the water film between the inner crown pattern portion 31 and the ground, thereby improving the friction between the tire and the ground and improving the wet handling of the tire; on the other hand, the arrangement of the first sheet structure 51 extending into the first concave portion 41 ensures the rigidity of the inner crown pattern portion 31, further ensuring the rigidity of the tire pattern block and further ensuring the handling performance of the tire. At the same time, the above arrangement improves the aesthetics of the tire tread structure by the arrangement of the angle of the first sheet structure 51.

[0044] In this embodiment, the first angle A1 satisfies: A1 = 68°, so as to ensure that the value of the first angle A1 is relatively appropriate, so as to enhance the aesthetics of the tire tread structure.

[0045] like Figure 1 and Figure 2As shown, the plurality of sheet structures 50 further include a second sheet structure 52. The second sheet structure 52 is arranged on the inner crown pattern portion 31, and the two ends of the second sheet structure 52 extend into the longitudinal grooves 10 located on both sides of the inner crown pattern portion 31 respectively. The second sheet structure 52 is arranged at a second angle A2 with the width direction of the tire, and the second angle A2 satisfies: 20°≤A2≤24°. There are a plurality of second sheet structures 52, and the plurality of second sheet structures 52 are arranged at intervals along the circumference of the tire, and the first sheet structure 51 and the first recess 41 are arranged between two adjacent second sheet structures 52. In this way, the above arrangement, on the one hand, breaks the water film between the inner crown pattern portion 31 and the ground, further improves the friction between the tire and the ground, and further improves the wet handling of the tire; on the other hand, it increases the bite force between the inner crown pattern portion 31 and the ground, improves the grip of the tire, shortens the braking distance of the tire, thereby improving the snow traction of the tire, and also improves the braking ability and driving stability of the tire. At the same time, the arrangement of the plurality of second sheet structures 52 can also reduce the rigidity of the inner crown pattern portion 31, thereby reducing the stress of the tire, thereby improving the driving comfort of the driver. At the same time, the above arrangement further limits the arrangement position of the first sheet structure 51 and the first concave portion 41, further improving the handling performance of the tire.

[0046] In this embodiment, the second angle A2 satisfies: A2=68°, so that the second sheet structure 52 and the first sheet structure are arranged parallel to each other, further improving the aesthetics of the tire tread structure.

[0047] like Figure 1 and Figure 2As shown, the middle pattern portion 30 that overlaps with at least part of the center plane C of the tire is the center pattern portion 32, and the plurality of sheet structures 50 further include a third sheet structure 53. The third sheet structure 53 is arranged on the center pattern portion 32, and the two ends of the third sheet structure 53 extend into the longitudinal grooves 10 located on both sides of the center pattern portion 32, respectively. There are multiple third sheet structures 53, and the multiple third sheet structures 53 are arranged at intervals along the circumferential direction of the tire. The third sheet structure 53 includes a first sub-sheet structure 531 and a second sub-sheet structure 532 that are connected to each other, and the first sub-sheet structure 531 and the second sub-sheet structure 532 are arranged at an angle. Among them, the tire tread structure further includes a second recess 42, which is arranged on the center pattern portion 32 and is located between two adjacent third sheet structures 53, one end of the second recess 42 extends to one side of the center pattern portion 32, and the other end of the second recess 42 is at a preset distance from the other side of the center pattern portion 32. In this way, the above arrangement, on the one hand, breaks the water film between the central pattern portion 32 and the ground, further improves the friction between the tire and the ground, and further improves the wet handling of the tire; on the other hand, it increases the bite force between the central pattern portion 32 and the ground, further improves the grip of the tire, shortens the braking distance of the tire, thereby improving the snow traction of the tire, and further improves the braking ability and driving stability of the tire. At the same time, the arrangement of multiple third sheet structures 53, on the one hand, can weaken the rigidity of the central pattern portion 32, further weaken the stress of the tire, and further improve the driving comfort of the driver; on the other hand, it ensures the uniformity of the rigidity of the central pattern portion 32, making the matching of the rigidity of the central pattern portion 32 more reasonable, thereby improving the handling performance of the tire. At the same time, the above arrangement makes the third sheet structure 53 arranged in a broken line through the first sub-sheet structure 531 and the second sub-sheet structure 532, thereby improving the aesthetics of the tire.

[0048] like Figure 1 , Figure 2 and Figure 8As shown, the middle pattern portion 30 close to the outer side of the tire is the outer crown pattern portion 33, and the plurality of sheet structures 50 further include a fourth sheet structure 54. The fourth sheet structure 54 is arranged in the outer crown pattern portion 33, and the two ends of the fourth sheet structure 54 respectively extend into the longitudinal grooves 10 located on both sides of the outer crown pattern portion 33. There are multiple fourth sheet structures 54, and the multiple fourth sheet structures 54 are arranged at intervals along the circumferential direction of the tire. Among them, the tire tread structure also includes a third recess 43, which is arranged on the outer crown pattern portion 33, and one end of the third recess 43 extends to one side of the outer crown pattern portion 33, and the other end of the third recess 43 is at a preset distance from the other side of the outer crown pattern portion 33. Among them, the plurality of second recesses 42 are arranged one-to-one with the plurality of third recesses 43. In this way, the above arrangement, on the one hand, breaks the water film between the outer crown pattern portion 33 and the ground, further improves the friction between the tire and the ground, and further improves the wet handling of the tire; on the other hand, it increases the bite force between the outer crown pattern portion 33 and the ground, further improves the tire's grip, shortens the tire's braking distance, thereby improving the tire's snow traction, further improving the tire's braking ability and driving stability, and further improving the tire's handling performance. At the same time, the arrangement of multiple fourth sheet structures 54 can also weaken the rigidity of the center pattern portion 32, further weaken the tire's stress, and further improve the driver's driving comfort. At the same time, the above arrangement improves the aesthetics of the tire by arranging multiple second recesses 42 and multiple third recesses 43 in a one-to-one correspondence.

[0049] like Figure 1 and Figure 2 As shown, the plurality of sheet structures 50 further include a fifth sheet structure 55 and a sixth sheet structure 56, wherein the fifth sheet structure 55 is disposed in the second recess 42; and / or the sixth sheet structure 56 is disposed in the third recess 43. Thus, the above arrangement improves the rigidity of the center tread portion 32 and the outer crown tread portion 33, further improves the rigidity of the tire tread blocks, and thus improves the handling performance of the tire.

[0050] like Figure 1 and Figure 2As shown, the two shoulder pattern portions 20 include an inner shoulder pattern portion 21 and an outer shoulder pattern portion 22, and the tire tread structure also includes a fourth recess 44 and a fifth recess 45. The fourth recess 44 is arranged on the inner shoulder pattern portion 21, one end of the fourth recess 44 extends to the side of the inner shoulder pattern portion 21 close to the center pattern portion 32, and the other end of the fourth recess 44 is at a preset distance from the side of the inner shoulder pattern portion 21 away from the middle pattern portion 30. There are multiple fourth recesses 44, and the multiple fourth recesses 44 are arranged at intervals along the circumferential direction of the tire. Among them, along the width direction of the tire, the fourth recess 44 is staggered with the first recess 41, and the fourth recess 44 is arranged at a third angle A3 with the width direction of the tire, and the third angle A3 satisfies: 4°≤A3≤6°. The fifth recess 45 is arranged on the outer shoulder pattern portion 22, and the fifth recess 45 is arranged at a fourth angle A4 with the width direction of the tire, and the fourth angle A4 satisfies: 4°≤A4≤6°. The fourth recess 44 includes a first sub-recess 441 and a second sub-recess 442 that are interconnected, and the depth H1 of the first sub-recess 441 satisfies: 1mm≤H1≤5mm, and the depth H2 of the second sub-recess 442 satisfies: 5mm≤H1≤9mm. In this way, the above arrangement, on the one hand, discharges the liquid in the longitudinal groove 10 to the outside of the tire through the fourth recess 44 and the fifth recess 45, further improving the drainage performance of the tire and further improving the anti-skid performance of the tire; on the other hand, the staggered arrangement of the fourth recess 44 and the first recess 41 avoids the increase of noise transmission, reduces the driving noise of the tire, and improves the driving comfort of the driver. At the same time, the above arrangement improves the rigidity of the fourth recessed portion 44 and the inner shoulder pattern portion 21 through the first sub-recessed portion 441 and the second sub-recessed portion 442 , thereby improving the handling performance of the tire.

[0051] In this embodiment, the depth H1 of the first sub-recess 441 satisfies: H1=3 mm, so as to ensure that the value of the depth H1 of the first sub-recess 441 is more appropriate.

[0052] In this embodiment, the depth H2 of the second sub-recess 442 satisfies: H2=7 mm, so as to ensure that the value of the depth H2 of the second sub-recess 442 is more appropriate.

[0053] like Figure 6 As shown, an eighth chamfer 78 is provided at the connection between the side wall and the bottom wall of the fourth recess 44, and a twelfth angle A12 is formed between the side wall of the fourth recess 44 and the normal of the fourth recess 44, and the twelfth angle A12 satisfies: A12 = 3°.

[0054] like Figure 6As shown, a ninth chamfer 79 is provided at the connection between the side wall and the bottom wall of the fifth recess 45 , and a thirteenth angle A13 is formed between the side wall of the fifth recess 45 and the normal of the fifth recess 45 , and the thirteenth angle A13 satisfies: A13=3°.

[0055] Specifically, the sheet structure 50, the first recess 41, the second recess 42, the third recess 43, the fourth recess 44 and the fifth recess 45 are each provided in plurality, so as to increase the space for dispersing stress of the tire pattern blocks when the high-speed rotating tire contacts the ground and deforms, thereby further improving the handling performance of the tire.

[0056] like Figure 1 and Figure 2As shown, the first sheet-like structure 51 and the first recessed portion 41 form a partitioning structure 80, and there are multiple partitioning structures 80, which are arranged along the circumferential direction of the tire to partition the inner crown pattern portion 31 into multiple inner crown pattern blocks 311. Multiple third sheet-like structures 53 partition the center pattern portion 32 into multiple center pattern blocks 321. Multiple fourth sheet-like structures 54 partition the outer crown pattern portion 33 into multiple outer crown pattern blocks 331. A first sub-pattern block 2111 is formed between the inner shoulder pattern portion 21 between two adjacent fourth recessed portions 44 and a fourth recessed portion 44 adjacent thereto, and an inner shoulder pattern block 211 is formed between at least two adjacent first sub-pattern blocks 2111. A second sub-pattern block 2211 is formed between the outer shoulder pattern portion 22 located between two adjacent fifth recesses 45 and a fifth recess 45 adjacent thereto, and an outer shoulder pattern block 221 is formed between at least two adjacent second sub-pattern blocks 2211. Among them, a plurality of inner crown pattern blocks 311 are arranged in one-to-one correspondence with a plurality of inner shoulder pattern blocks 211, a plurality of center pattern blocks 321 are arranged in one-to-one correspondence with a plurality of inner shoulder pattern blocks 211, a plurality of outer crown pattern blocks 331 are arranged in one-to-one correspondence with a plurality of inner shoulder pattern blocks 211, a plurality of outer shoulder pattern blocks 221 are arranged in one-to-one correspondence with a plurality of inner shoulder pattern blocks 211, and between the inner shoulder pattern block 211 and the inner crown pattern block 311, the center pattern block 321, the outer crown pattern block 331 and the outer shoulder pattern block 221 arranged corresponding thereto. A pattern group 60 is formed, and N pattern groups 60 include a first pattern group 61, a second pattern group 62, a third pattern group 63, a fourth pattern group 64, and a fifth pattern group 65. The length P1 of the first pattern group 61, the length P2 of the second pattern group 62, the length P3 of the third pattern group 63, the length P4 of the fourth pattern group 64, and the length P5 of the fifth pattern group 65 satisfy: 1.04P2≤P1≤1.24P2, 1.47P2≤P3≤1.67P2, 1.33P2≤P4≤1.53P2, 1.19P2≤P5≤1.39P2. N satisfies: 34≤N≤38, and N is an even number. In this way, five pattern groups 60 with different lengths (length P1, length P2, length P3, length P4 and length P5) are arranged disorderly and staggered along the circumference of the tire to further affect the vibration frequency of the gas in the groove, effectively disrupt the audio frequency of the pattern cavity noise, and reduce the peak value of the tire's driving noise, thereby reducing the resonance of the pattern, further reducing the tire's driving noise, and thus improving the driving comfort of the driver.

[0057] In this embodiment, the length of the pattern group 60 is the pitch.

[0058] In this embodiment, the specific arrangement of the first pattern group 61, the second pattern group 62, the third pattern group 63, the fourth pattern group 64 and the fifth pattern group 65 is confirmed after finite element simulation optimization. The overall arrangement is random, and the pitch width ratio is an irrational number ratio to ensure that the first pattern group 61, the second pattern group 62, the third pattern group 63, the fourth pattern group 64 and the fifth pattern group 65 can maximize the influence on the vibration frequency of the gas in the groove, thereby further reducing the driving noise of the tire.

[0059] In this embodiment, the corners of the inner shoulder pattern block 211 are provided with a first chamfer 71, the corners of the inner crown pattern block 311 are provided with a second chamfer 72, and the corners of the outer shoulder pattern block 221 are provided with a third chamfer 73. In this way, the above arrangement increases the water envelope area of ​​the tire, improves the anti-skid performance of the tire, and improves the driving safety of the driver; on the other hand, it avoids the edge of the tire pattern block being too sharp, which increases the damage of the tire pattern block during the tire driving process, thereby improving the wear resistance of the tire and extending the service life of the tire.

[0060] like Figure 1 and Figure 2As shown, the plurality of longitudinal grooves 10 include a first longitudinal groove 11, a second longitudinal groove 12, a third longitudinal groove 13 and a fourth longitudinal groove 14. The first longitudinal groove 11 is located between the inner shoulder pattern portion 21 and the inner crown pattern portion 31, and the width W11 of the first longitudinal groove 11 satisfies the following relationship with the width T: 0.053T≤W11≤0.073T. The second longitudinal groove 12 is located between the inner crown pattern portion 31 and the center pattern portion 32, and the width W12 of the second longitudinal groove 12 satisfies the following relationship with the width T: 0.064T≤W12≤0.084T. The third longitudinal groove 13 is located between the center pattern portion 32 and the outer crown pattern portion 33, and the width W13 of the third longitudinal groove 13 satisfies the following relationship with the width T: 0.068T≤W13≤0.088T. The fourth longitudinal groove 14 is located between the outer crown pattern portion 33 and the outer shoulder pattern portion 22, and the width W14 of the fourth longitudinal groove 14 satisfies the following relationship with the width T: 0.038T≤W14≤0.058T. Among them, the width W11, the width W12, the width W13 and the width W14 satisfy the following relationship: 1.31W14≤W11≤1.35W14, 1.53W14≤W12≤1.57W14, 1.62W14≤W13≤1.66W14. In this way, the above arrangement enables the width of the longitudinal groove 10 to be further adjusted according to the different arrangement positions thereof, thereby increasing the proportion of the grooves on the inner side of the tire, thereby improving the drainage performance of the tire, and reducing the proportion of the grooves on the outer side of the tire, thereby improving the ground contact rate of the tire, and improving the dry handling of the tire. At the same time, the above-mentioned setting makes the selection of the ratios among the widths W11, W12, W13 and W14 more flexible and diverse to adapt to different working conditions and usage requirements, thereby improving the processing flexibility of the staff.

[0061] In this embodiment, the widths W11, W12, W13 and W14 satisfy the following conditions: W11=1.33W14, W12=1.55W14, W13=1.64W14, to ensure that the width ratios between the widths W11, W12, W13 and W14 are more appropriate, further improving the drainage performance and dry handling performance of the tire.

[0062] like Figure 3As shown, the connection between the groove wall and the groove bottom of the first longitudinal groove 11 is provided with a fourth chamfer 74, a groove wall of the first longitudinal groove 11 and the normal line of the first longitudinal groove 11 are provided at a fifth angle A5, and the fifth angle A5 satisfies: A5 = 10°, and another groove wall of the first longitudinal groove 11 and the normal line of the first longitudinal groove 11 are provided at a sixth angle A6, and the sixth angle A6 satisfies: A6 = 12°. In this way, the above arrangement reduces the stress concentration of the bottom wall of the first longitudinal groove 11, reduces the risk of cracks at the bottom of the tire groove, prolongs the service life of the tire, is beneficial to the drainage performance of the tire, and improves the handling performance of the tire.

[0063] like Figure 4 As shown, the connection between the groove wall and the groove bottom of the second longitudinal groove 12 is provided with a fifth chamfer 75, and the groove wall of the second longitudinal groove 12 and the normal of the second longitudinal groove 12 are provided at a seventh angle A7, and the seventh angle A7 satisfies: A7 = 10°. In this way, the above arrangement reduces the stress concentration of the bottom wall of the second longitudinal groove 12, reduces the risk of cracks at the bottom of the tire groove, prolongs the service life of the tire, is beneficial to the drainage performance of the tire, and improves the handling performance of the tire.

[0064] like Figure 4 As shown, the connection between the groove wall and the groove bottom of the third longitudinal groove 13 is provided with a sixth chamfer 76, and the groove wall of the third longitudinal groove 13 and the normal line of the third longitudinal groove 13 are provided at an eighth angle A8, and the eighth angle A8 satisfies: A8 = 10°. In this way, the above arrangement reduces the stress concentration of the bottom wall of the third longitudinal groove 13, reduces the risk of cracks at the bottom of the tire groove, prolongs the service life of the tire, is beneficial to the drainage performance of the tire, and improves the handling performance of the tire.

[0065] like Figure 5 As shown, the connection between the groove wall and the groove bottom of the fourth longitudinal groove 14 is provided with a seventh chamfer 77, a groove wall of the fourth longitudinal groove 14 and the normal of the fourth longitudinal groove 14 are provided at a ninth angle A9, the ninth angle A9 satisfies: 8A9 = 8°, another groove wall of the fourth longitudinal groove 14 and the normal of the fourth longitudinal groove 14 are provided at a tenth angle A10, the tenth angle A10 satisfies: A10 = 10°. In this way, the above arrangement reduces the stress concentration of the bottom wall of the fourth longitudinal groove 14, reduces the risk of cracks at the bottom of the tire groove, prolongs the service life of the tire, is also beneficial to the drainage performance of the tire, and improves the handling performance of the tire.

[0066] like Figure 1 and Figure 2As shown, the width W21 of the inner shoulder pattern portion 21 satisfies the following relation with the width T: 0.174≤W21≤0.204T. The width W22 of the inner crown pattern portion 31 satisfies the following relation with the width T: 0.113T≤W22≤0.143T. The width W23 of the center pattern portion 32 satisfies the following relation with the width T: 0.113T≤W23≤0.143T. The width W24 of the outer crown pattern portion 33 satisfies the following relation with the width T: 0.105T≤W24≤0.135T. The width W25 of the outer shoulder pattern portion 22 satisfies the following relation with the width T: 0.157T≤W25≤0.187T. The widths W21, W22, W23, W24 and W25 satisfy the following conditions: 1.55W24≤W21≤1.59W24, 1.04W24≤W22≤1.08W24, 1.04W24≤W23≤1.08W24, 1.40W24≤W25≤1.44W24. The length L of the fifth recess 45 and the width W25 satisfy the following conditions: 0.81W25≤L≤0.85W25. The contact surface between the tire and the ground has an area S1, and the area S2 of the tire tread structure and the area S1 satisfy the following conditions: 0.67S1≤S2≤0.73S1. In this way, the above setting increases the proportion of the tread blocks on the outside of the tire, improves the rigidity of the tread blocks, and further improves the dry performance of the tire; on the other hand, it makes the selection of the ratios between width W21, width W22, width W23, width W24 and width W25 more flexible and diverse to adapt to different working conditions and usage requirements, thereby improving the processing flexibility of the staff. At the same time, the above setting ensures that each tread block of the tire is fully in contact with the ground, improves the utilization rate of the tire pattern, and also improves the uniformity of the force of the tread blocks of the tire, thereby improving the wear resistance of the tire and thus extending the service life of the tire.

[0067] In this embodiment, the widths W21, W22, W23, W24 and W25 satisfy the following conditions: W21=1.57W24, W22=1.06W24, W23=1.06W24, W25=1.42W24, to ensure that the width ratios between the widths W21, W22, W23, W24 and W25 are more appropriate, further improving the rigidity of the tire tread blocks and the dry handling performance of the tire.

[0068] The present application also provides a tire (not shown), which includes the tire tread structure described above.

[0069] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0070] The tire tread structure includes a plurality of longitudinal grooves, each of which extends along the circumference of the tire, and the plurality of longitudinal grooves are arranged at intervals along the width direction of the tire to separate the tread into a shoulder pattern portion and a plurality of intermediate pattern portions located between the two shoulder pattern portions. A first recess is arranged on the intermediate pattern portion, and one end of the first recess extends to the side of the intermediate pattern portion. A sheet structure is arranged in the intermediate pattern portion, and there are a plurality of sheet structures, and the plurality of sheet structures are arranged at intervals along the circumference of the tire, and one end of at least one sheet structure extends into the first recess. The contact surface between the tire and the driving surface has a width T, and the width W1 of each longitudinal groove satisfies the following relationship with the width T: 0.223T≤W1≤0.303T. In this way, during the driving process of the automobile, the above arrangement ensures the drainage performance of the tire through the longitudinal grooves on the one hand, and improves the anti-skid performance of the tire; on the other hand, the water film between the tire and the ground is cut through the first recess and the sheet structure, and the friction between the tire and the ground is improved, thereby improving the wet handling of the tire. At the same time, the arrangement of the first sheet-like structure, on the one hand, increases the bite force between the tire and the ground, improves the tire's grip, shortens the braking distance of the car, and improves the tire's traction on snow, thereby improving the tire's braking performance and driving stability, and further improving the tire's handling performance. On the other hand, it weakens the rigidity of the tire pattern blocks and the stress of the tire, thereby improving the driver's driving comfort, and thus solving the problem that the tire tread structure in the prior art cannot take into account both the tire's handling performance and comfort performance. At the same time, the arrangement of the first sheet-like structure extending into the first concave portion further ensures the rigidity of the tire pattern blocks and further improves the tire's handling performance.

[0071] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0072] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0073] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0074] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A tire tread structure, characterized in that: include: A plurality of longitudinal grooves (10), each of the longitudinal grooves (10) extending along the circumference of the tire, and the plurality of longitudinal grooves (10) being arranged at intervals along the width direction of the tire to separate the tread into a shoulder pattern portion (20) and a plurality of intermediate pattern portions (30) located between the two shoulder pattern portions (20); A first recessed portion (41) is provided on the middle tread portion (30), and one end of the first recessed portion (41) extends to a side surface of the middle tread portion (30); a sheet-like structure (50) disposed in the middle tread portion (30), wherein the sheet-like structures (50) are multiple, and the multiple sheet-like structures (50) are spaced apart along the circumference of the tire, and one end of at least one sheet-like structure (50) extends into the first recess (41); The contact surface between the tire and the running surface has a width T, and the sum of the widths W1 of each of the longitudinal grooves (10) and the width T satisfy the following relationship: 0.223T≤W1≤0.303T.

2. The tire tread structure according to claim 1, characterized in that: The middle tread portion (30) close to the inner side of the tire is an inner crown tread portion (31), the first recess (41) is arranged on the inner crown tread portion (31), the plurality of sheet-like structures (50) include a first sheet-like structure (51), The first sheet-like structure (51) is arranged in the inner tread crown pattern portion (31), one end of the first sheet-like structure (51) extends into the first recessed portion (41), the first recessed portion (41) extends away from one end of the first sheet-like structure (51) to a side surface of the inner tread crown pattern portion (31), and the other end of the first sheet-like structure (51) extends into the longitudinal groove (10) via the other side surface of the inner tread crown pattern portion (31); the first sheet-like structure (51) is arranged at a first angle A1 with respect to the width direction of the tire, and the first angle A1 satisfies: 20°≤A1≤24°.

3. The tire tread structure according to claim 2, characterized in that: The plurality of sheet-like structures (50) further comprises: A second sheet-like structure (52) is arranged on the inner tread crown pattern portion (31), two ends of the second sheet-like structure (52) respectively extend into the longitudinal grooves (10) located on both sides of the inner tread crown pattern portion (31), and the second sheet-like structure (52) is arranged at a second angle A2 with respect to the width direction of the tire, and the second angle A2 satisfies: 20°≤A2≤24°; There are a plurality of the second sheet-like structures (52), and the plurality of the second sheet-like structures (52) are arranged at intervals along the circumference of the tire, and the first sheet-like structure (51) and the first recess (41) are both arranged between two adjacent second sheet-like structures (52).

4. The tire tread structure according to claim 2, characterized in that: The middle tread portion (30) that overlaps with at least a portion of the center plane C of the tire is a center tread portion (32), and the plurality of sheet structures (50) further include: A third sheet-like structure (53) is arranged on the central tread portion (32), two ends of the third sheet-like structure (53) respectively extend into the longitudinal grooves (10) located on both sides of the central tread portion (32), and there are a plurality of the third sheet-like structures (53), and the plurality of the third sheet-like structures (53) are arranged at intervals along the circumference of the tire; The third sheet-like structure (53) comprises a first sub-sheet-like structure (531) and a second sub-sheet-like structure (532) which are connected to each other, and the first sub-sheet-like structure (531) and the second sub-sheet-like structure (532) are arranged at an angle; The tire tread structure further comprises a second recess (42), wherein the second recess (42) is arranged on the central tread portion (32) and is located between two adjacent third sheet structures (53), one end of the second recess (42) extends to a side surface of the central tread portion (32), and the other end of the second recess (42) has a preset distance from the other side surface of the central tread portion (32).

5. The tire tread structure according to claim 4, characterized in that: The middle tread portion (30) close to the outer side of the tire is an outer crown tread portion (33), and the plurality of sheet structures (50) further include: A fourth sheet-like structure (54) is arranged in the outer crown tread portion (33), and two ends of the fourth sheet-like structure (54) respectively extend into the longitudinal grooves (10) located on both sides of the outer crown tread portion (33). There are a plurality of the fourth sheet-like structures (54), and the plurality of the fourth sheet-like structures (54) are arranged at intervals along the circumference of the tire; The tire tread structure further comprises a third recessed portion (43) disposed on the outer crown pattern portion (33), one end of the third recessed portion (43) extending to a side surface of the outer crown pattern portion (33), and a preset distance between the other end of the third recessed portion (43) and the other side surface of the outer crown pattern portion (33); Wherein, the plurality of second recesses (42) and the plurality of third recesses (43) are arranged in one-to-one correspondence.

6. The tire tread structure according to claim 5, characterized in that: The plurality of sheet-like structures (50) further comprises: a fifth sheet-like structure (55), disposed in the second recess (42); and / or A sixth sheet-like structure (56) is arranged in the third recess (43).

7. The tire tread structure according to claim 6, characterized in that: The two shoulder pattern portions (20) include an inner shoulder pattern portion (21) and an outer shoulder pattern portion (22), and the tire tread structure further includes: A fourth recess (44) is arranged on the inner shoulder tread portion (21), one end of the fourth recess (44) extends to the side of the inner shoulder tread portion (21) close to the center tread portion (32), and a preset distance is provided between the other end of the fourth recess (44) and the side of the inner shoulder tread portion (21) away from the middle tread portion (30). There are a plurality of fourth recesses (44), and the plurality of fourth recesses (44) are arranged at intervals along the circumference of the tire; wherein, along the width direction of the tire, the fourth recess (44) is staggered with the first recess (41), and the fourth recess (44) is arranged at a third angle A3 with the width direction of the tire, and the third angle A3 is provided between the fourth recess (44) and the width direction of the tire, and the third angle A3 is provided between the fourth recess (44) and the tire. A3 meets the following requirements: 4°≤A3≤6°; A fifth recess (45) is arranged on the outer shoulder pattern portion (22), and the fifth recess (45) is arranged at a fourth angle A4 with respect to the width direction of the tire, and the fourth angle A4 satisfies: 4°≤A4≤6°; The fourth recess (44) comprises a first sub-recess (441) and a second sub-recess (442) which are interconnected, the depth H1 of the first sub-recess (441) satisfies: 1mm≤H1≤5mm, and the depth H2 of the second sub-recess (442) satisfies: 5mm≤H1≤9mm.

8. The tire tread structure according to claim 7, characterized in that: The first sheet-like structure (51) and the first recessed portion (41) form a partition structure (80), and the partition structure (80) is multiple, and the multiple partition structures (80) are arranged along the circumference of the tire to divide the inner crown pattern portion (31) into a plurality of inner crown pattern blocks (311); The plurality of third sheet-like structures (53) divide the central tread portion (32) into a plurality of central tread blocks (321); The plurality of fourth sheet-like structures (54) divide the outer tread crown pattern portion (33) into a plurality of outer tread crown pattern blocks (331); A first sub-pattern block (2111) is formed between an inner shoulder pattern portion (21) located between two adjacent fourth recesses (44) and a fourth recess (44) adjacent thereto, and an inner shoulder pattern block (211) is formed between at least two adjacent first sub-pattern blocks (2111); A second sub-pattern block (2211) is formed between an outer shoulder pattern portion (22) located between two adjacent fifth recesses (45) and a fifth recess (45) adjacent thereto, and an outer shoulder pattern block (221) is formed between at least two adjacent second sub-pattern blocks (2211); The plurality of inner tread crown pattern blocks (311) are arranged in one-to-one correspondence with the plurality of inner tread shoulder pattern blocks (211); the plurality of the central pattern blocks (321) are arranged in one-to-one correspondence with the plurality of inner tread shoulder pattern blocks (211); the plurality of the outer tread crown pattern blocks (331) are arranged in one-to-one correspondence with the plurality of inner tread shoulder pattern blocks (211); the plurality of the outer tread shoulder pattern blocks (221) are arranged in one-to-one correspondence with the plurality of inner tread shoulder pattern blocks (211); and the inner tread shoulder pattern blocks (211) and the corresponding inner tread crown pattern blocks (311), the central pattern blocks (321), the outer tread crown pattern blocks (331) and the outer tread shoulder pattern blocks (221) are formed between the inner tread shoulder pattern blocks (211). The invention relates to a pattern group (60), wherein N of the pattern groups (60) include a first pattern group (61), a second pattern group (62), a third pattern group (63), a fourth pattern group (64) and a fifth pattern group (65), wherein a length P1 of the first pattern group (61), a length P2 of the second pattern group (62), a length P3 of the third pattern group (63), a length P4 of the fourth pattern group (64) and a length P5 of the fifth pattern group (65) satisfy the following conditions: 1.04P2≤P1≤1.24P2, 1.47P2≤P3≤1.67P2, 1.33P2≤P4≤1.53P2, 1.19P2≤P5≤1.39P2; and N satisfies the following conditions: 34≤N≤38, and N is an even number.

9. The tire tread structure according to claim 7, characterized in that: The plurality of longitudinal grooves (10) include: A first longitudinal groove (11) is located between the inner shoulder pattern portion (21) and the inner crown pattern portion (31), and a width W11 of the first longitudinal groove (11) satisfies the following relationship with the width T: 0.053T≤W11≤0.073T; A second longitudinal groove (12) is located between the inner crown pattern portion (31) and the center pattern portion (32), and a width W12 of the second longitudinal groove (12) satisfies the following relationship with the width T: 0.064T≤W12≤0.084T; A third longitudinal groove (13) is located between the central tread portion (32) and the outer crown tread portion (33), and a width W13 of the third longitudinal groove (13) satisfies the following relationship with the width T: 0.068T≤W13≤0.088T; A fourth longitudinal groove (14) is located between the outer crown pattern portion (33) and the outer shoulder pattern portion (22), and a width W14 of the fourth longitudinal groove (14) satisfies the following relationship with the width T: 0.038T≤W14≤0.058T; Among them, the width W11, the width W12, the width W13 and the width W14 satisfy the following conditions: 1.31W14≤W11≤1.35W14, 1.53W14≤W12≤1.57W14, 1.62W14≤W13≤1.66W14.

10. The tire tread structure according to claim 7, characterized in that: The width W21 of the inner shoulder pattern portion (21) and the width T satisfy the following relationship: 0.174≤W21≤0.204T; The width W22 of the inner tread crown pattern portion (31) and the width T satisfy the following relationship: 0.113T≤W22≤0.143T; The width W23 of the central pattern portion (32) and the width T satisfy the following relationship: 0.113T≤W23≤0.143T; The width W24 of the outer crown pattern portion (33) and the width T satisfy the following relationship: 0.105T≤W24≤0.135T; The width W25 of the outer shoulder pattern portion (22) and the width T satisfy the following relationship: 0.157T≤W25≤0.187T; The width W21, the width W22, the width W23, the width W24 and the width W25 satisfy the following: 1.55W24≤W21≤1.59W24, 1.04W24≤W22≤1.08W24, 1.04W24≤W23≤1.08W24, 1.40W24≤W25≤1.44W24; The length L of the fifth recess (45) and the width W25 satisfy the following conditions: 0.81W25≤L≤0.85W25; The contact surface between the tire and the ground has an area S1, and the area S2 of the tire tread structure satisfies the following relationship with the area S1: 0.67S1≤S2≤0.73S1.

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