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 the tire, the longitudinal grooves are formed in the width direction of the tire at intervals so as to divide the tire tread into a plurality of middle pattern parts located between two tire shoulder pattern parts, and the contact face between the tire and the driving face has the area S1, the area S2 and the area S1 of the tire tread structure meet the condition that S1 is more than or equal to 0.66 S2 and less than or equal to 0.72 S2; the first communicating groove is formed in the middle pattern part and used for communicating the longitudinal grooves located in the two sides of the middle pattern part; wherein the number of the first communicating grooves is multiple, the multiple first communicating grooves are formed in the circumferential direction and / or the width direction of the tire at intervals, and a structure reinforcing protrusion is arranged at the groove bottom of at least one first communicating groove. The tire tread structure effectively solves the problem that a tire tread structure in the prior art cannot simultaneously consider the control performance and the wear resistance 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, cars are in contact with the ground through tires, and the friction between the tires and the ground provides power for the car's driving. The tire pattern, where the tire is in direct contact with the ground, is the core structure that generates the power required for the car's driving, braking and steering. It can be seen that factors such as the structural design of the tire pattern, the ground contact area and the ground contact pressure will have an important impact on the wear resistance and handling performance of the car.

[0003] In the prior art, in order to achieve a balance between the tire's service life (wear resistance) and handling performance, the tire's handling performance is usually partially sacrificed (tire wear is actually mainly concentrated in the vehicle's braking process, that is, the tire tread will produce very intense sliding friction with the ground during the vehicle's braking process).

[0004] However, the tires in the prior art are actually unable to achieve a balance between service life (wear resistance) and handling performance in a true sense, because when the tires are driving on rainy days, a water film will be formed between the ground and the tires, which can reduce the friction coefficient between the tire tread and the ground. At this time, the handling performance of the tires in the prior art cannot meet the actual use requirements, and there may be a safety problem of excessive braking distance. Utility Model Content

[0005] 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 wear resistance of the tire.

[0006] 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 plurality of intermediate pattern portions located between two shoulder pattern portions, the contact surface between the tire and the driving surface has an area S1, and the area S2 of the tire tread structure satisfies the following relationship with the area S1: 0.66S2≤S1≤0.72S2; a first connecting groove, which is arranged on the intermediate pattern portion, and the first connecting groove is used to connect the longitudinal grooves located on both sides of the intermediate pattern portion; wherein there are a plurality of first connecting grooves, and the plurality of first connecting grooves are arranged at intervals along the circumference and / or width direction of the tire, and a structural reinforcement protrusion is provided at the groove bottom of at least one first connecting groove.

[0007] Furthermore, the multiple intermediate pattern portions include a center pattern portion and a crown pattern portion, at least a portion of the center pattern portion coincides with the center plane S of the tire, and the crown pattern portion is located between the center pattern portion and the shoulder pattern portion; wherein, the first connecting groove is arranged on the crown pattern portion, and a first angle A1 is formed between the first connecting groove and the width direction of the tire, and the first angle A1 satisfies: 20°≤A1≤30°, and there are at least two structural reinforcement protrusions, and at least two structural reinforcement protrusions are arranged at intervals along the extension direction of the first connecting groove.

[0008] Furthermore, the crown pattern portion close to the inner side of the tire is the inner crown pattern portion, and a plurality of first connecting grooves separate the inner crown pattern portion into a plurality of inner crown pattern blocks. The tire tread structure also includes: a first sheet structure, which is arranged in the inner crown pattern block, and both ends of the first sheet structure extend into the longitudinal grooves located on both sides of the inner crown pattern portion; wherein, at least a portion of the first sheet structure is arranged in a zigzag or wavy shape, and a second angle A2 is formed between the first sheet structure and the width direction of the tire, and the second angle A2 satisfies: 20°≤A2≤30°.

[0009] Furthermore, the crown pattern portion close to the outer side of the tire is the outer crown pattern portion, and the tire tread structure also includes: a first recess, which is arranged on the outer crown pattern portion, one end of the first recess extends to a side surface of the outer crown pattern portion, and the other end of the first recess has a preset distance from the other side surface of the outer crown pattern portion, and the first recess is arranged at a third angle A3 with the width direction of the tire, and the third angle A3 satisfies: 20°≤A3≤30°; wherein, there are multiple first recesses, and the multiple first recesses are arranged at intervals along the circumferential direction of the tire, and a first recess is arranged between two adjacent first connecting grooves, so as to separate the outer crown pattern portion into multiple outer crown pattern blocks through the first connecting groove and the first recess; a second sheet structure is arranged in the outer crown pattern block, and in two longitudinal grooves adjacent to the outer crown pattern portion, one end of the second sheet structure extends into one longitudinal groove, and the other end of the second sheet structure has a preset distance from the other longitudinal groove.

[0010] Furthermore, the tire tread structure also includes: a third sheet structure, which is arranged in the central pattern portion, and the two ends of the third sheet structure extend into the longitudinal grooves on both sides of the central pattern portion respectively, and there are multiple third sheet structures, and the multiple third sheet structures are arranged at intervals along the circumference of the tire to divide the central pattern portion into multiple central pattern blocks; a central pattern recess, which is arranged on the central pattern block, and one end of the central pattern recess extends to a side surface of the central pattern block, and the other end of the central pattern recess has a preset distance from the other side surface of the central pattern block; wherein the central pattern recess is multiple and includes a second recess and a third recess, and the second recess and the third recess extend to different sides of the central pattern block respectively, and the second recess is set at a fourth angle A4 with the width direction of the tire, and the fourth angle A4 satisfies: 25°≤A4≤35°; the third recess is set at a fifth angle A5 with the width direction of the tire, and the fifth angle A5 satisfies: 15°≤A5≤25°.

[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 second connecting groove, which is arranged on the inner shoulder pattern portion, and the second connecting groove is used to connect the longitudinal groove adjacent to the inner shoulder pattern portion and the inner side of the tire, and the second connecting groove is arranged at a sixth angle A6 with the width direction of the tire, and the sixth angle A6 satisfies: 4°≤A6≤6°; wherein, there are a plurality of second connecting grooves, and the plurality of second connecting grooves are arranged at intervals along the circumferential direction of the tire , so as to separate the inner shoulder pattern portion into a plurality of inner shoulder pattern blocks; a fourth sheet structure is arranged in the inner shoulder pattern block, one end of the fourth sheet structure extends into the longitudinal groove, and the other end of the fourth sheet structure has a preset distance from the side of the inner shoulder pattern block away from the middle pattern portion, at least part of the fourth sheet structure is arranged in a fold line shape or a wave shape, and the length L of the fourth sheet structure and the width W11 of the inner shoulder pattern portion satisfy: 0.73W11≤L≤077W11.

[0012] Furthermore, the tire tread structure also includes: a fifth sheet-like structure, which is arranged in the outer shoulder pattern portion, the fifth sheet-like structure includes a first sub-sheet-like structure, a second sub-sheet-like structure and a third sub-sheet-like structure that are interconnected, the second sub-sheet-like structure is located between the first sub-sheet-like structure and the third sub-sheet-like structure, the end of the first sub-sheet-like structure away from the second sub-sheet-like structure extends into the longitudinal groove adjacent to the outer shoulder pattern portion, the end of the third sub-sheet-like structure away from the second sub-sheet-like structure has a preset distance from the side of the outer shoulder pattern portion away from the middle pattern portion, the first sub-sheet-like structure and the second sub-sheet-like structure are arranged at an angle, and the second sub-sheet-like structure and the third sub-sheet-like structure are arranged at an angle.

[0013] Furthermore, the tire tread structure also includes: a fourth recess, which is arranged on the outer shoulder pattern portion and is located on a side of the second sub-sheet structure away from the middle pattern portion, one end of the fourth recess extends to the side of the outer shoulder pattern portion away from the middle pattern portion, and the other end of the fourth recess extends to the second sub-sheet structure, and the length L of the fourth recess and the width W15 of the outer shoulder pattern portion satisfy: 0.83W15≤L≤087W15; a fifth recess, which is arranged on the outer shoulder pattern portion and is located on a side of the second sub-sheet structure away from the fourth recess, one end of the fifth recess extends to the side of the outer shoulder pattern portion close to the middle pattern portion, and the other end of the fifth recess has a preset distance from the second sub-sheet structure.

[0014] Furthermore, there are a plurality of fourth recesses, which are spaced apart along the circumferential direction of the tire to separate the outer shoulder pattern portion into a plurality of outer shoulder pattern blocks, the plurality of outer shoulder pattern blocks are arranged one-to-one with the plurality of center pattern blocks, the plurality of inner crown pattern blocks are arranged one-to-one with the plurality of center pattern blocks, the plurality of inner shoulder pattern blocks are arranged one-to-one with the plurality of center pattern blocks, the plurality of outer crown pattern blocks are arranged one-to-one with the plurality of center pattern blocks, and the central pattern blocks and the corresponding inner crown pattern blocks, the inner shoulder pattern blocks, the outer crown pattern blocks and the outer shoulder pattern blocks form sub-patterns. The tire tread structure also includes N pattern groups, each pattern group includes at least two adjacent sub-pattern groups, the pattern group has a length P, and 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 among the N pattern groups satisfy: 1.11P3≤P1≤1.31P3, 1.00P3≤P2≤1.20P3, 1.23P3≤P4≤1.43P3, 1.37P3≤P5≤1.57P3; wherein, N satisfies: 64≤N≤76, and N is an even number.

[0015] Furthermore, when the length P of the pattern group is greater than or equal to 25 cm, there are at least two fourth lamellar structures in the inner shoulder pattern block in the pattern group, and at least two fourth lamellar structures are arranged at intervals along the circumferential direction of the tire; there are at least two first lamellar structures in the inner crown pattern block in the pattern group, and at least two first lamellar structures are arranged at intervals along the circumferential direction of the tire; a sixth lamellar structure is also arranged in the center pattern block in the pattern group, and the two ends of the sixth lamellar structure extend into two longitudinal grooves adjacent to the center pattern portion respectively, and there are at least two second lamellar structures in the outer crown pattern block in the pattern group, and at least two second lamellar structures are arranged at intervals along the circumferential direction of the tire. Setting; a seventh lamellar structure is further provided in the outer shoulder pattern block in the pattern group, and the seventh lamellar structure is located between the third sub-lamellar structure and the fourth recess; and / or, the contact surface between the tire tread structure and the running surface has a width T, and the width W11 of the inner shoulder pattern portion, the width W12 of the outer shoulder pattern portion, the width W13 of the inner crown pattern portion, the width W14 of the center pattern portion, the width W15 of the outer crown pattern portion and the width T satisfy: 0.175T≤W11≤0.205T, 0.110T≤W12≤0.140T, 0.115T≤W13≤0.145T, 0.112T≤W14≤0 .142T, 0.175T≤W15≤0.205T; the widths W11, W12, W13, W14 and W15 satisfy the following conditions: 1.50W13≤W11≤1.54W13, 1.51W13≤W12≤1.55W13, 1.02W13≤W14≤1.06W13, 1.00W13≤W15≤1.04W13; and / or, the plurality of longitudinal grooves include a first longitudinal groove, a second longitudinal groove, a third longitudinal groove and a fourth longitudinal groove sequentially arranged from the inner side of the tire to the outer side of the tire, and the width W21 of the first longitudinal groove satisfies the following conditions: 0.05 4T≤W21≤0.074T; the width W22 of the second longitudinal groove satisfies the following condition with respect to the width T: 0.049T≤W22≤0.069T; the width W23 of the third longitudinal groove satisfies the following condition with respect to the width T: 0.049T≤W23≤0.069T; the width W24 of the fourth longitudinal groove satisfies the following condition with respect to the width T: 0.046T≤W24≤0.066T; the width W21, the width W22, the width W23 and the width W24 satisfy the following condition: 1.14W24≤W21≤1.18W24, 1.03W24≤W22≤1.07W24, 1.03W24≤W23≤1.07W24.

[0016] According to the technical solution of the utility model, the plurality of longitudinal grooves of the tire tread structure extend along the circumference of the tire and are arranged at intervals along the width direction of the tire to separate the tread into a plurality of middle pattern parts between two shoulder pattern parts, the contact surface between the tire and the running surface has an area S1, the area S2 of the tire tread structure satisfies the area S1: 0.66S2≤S1≤0.72S2, and the first connecting groove is arranged on the middle pattern part and is used to connect the longitudinal grooves located on both sides of the middle pattern part. There are a plurality of first connecting grooves, and the plurality of first connecting grooves are arranged at intervals along the circumference and / or width direction of the tire, and a structural reinforcement protrusion is arranged at the bottom of at least one first connecting groove. In this way, a tire with a larger pattern contact ratio (ratio setting between area S1 and area S2) makes the contact between the tire tread structure and the driving surface more complete and the pattern utilization rate higher, so as to improve the wear resistance and handling of the tire as a whole by improving the force uniformity of the tire tread structure, and the above-mentioned setting of the first connecting groove and the longitudinal groove improves the drainage performance of the tire, thereby improving the anti-skid performance (wet handling performance) of the tire. In addition, the setting of the structural reinforcement protrusion improves the rigidity and stability of the adjacent pattern blocks, reduces the deformation of the pattern blocks, and further improves the wear resistance and handling performance of the tire, thereby solving the problem in the prior art that the tire tread structure cannot take into account the handling performance and wear resistance of the tire at the same time, and prolongs the service life of the tire. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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:

[0018] Figure 1 A partial front view of an embodiment of a tire tread structure according to the present utility model is shown;

[0019] Figure 2 Shows Figure 1 A partial enlarged schematic diagram of the tire tread structure;

[0020] Figure 3 Shows Figure 1 A cross-sectional schematic diagram of a first communicating groove and a first recessed portion of a tire tread structure;

[0021] Figure 4 Shows Figure 1 A schematic cross-sectional view of a second concave portion and a third concave portion of a tire tread structure;

[0022] Figure 5 Shows Figure 1A cross-sectional schematic diagram of a second connecting groove and a fourth recessed portion of a tire tread structure;

[0023] Figure 6 Shows Figure 1 A schematic cross-sectional view of a first longitudinal groove of a tire tread structure;

[0024] Figure 7 Shows Figure 1 A schematic cross-sectional view of a second longitudinal groove and a third longitudinal groove of a tire tread structure;

[0025] Figure 8 Shows Figure 1 Schematic diagram of a cross-section of the fourth longitudinal groove of the tire tread structure.

[0026] The above drawings include the following reference numerals:

[0027] 10. longitudinal groove; 11. first longitudinal groove; 12. second longitudinal groove; 13. third longitudinal groove; 14. fourth longitudinal groove;

[0028] 20, shoulder pattern portion; 21, inner shoulder pattern portion; 211, inner shoulder pattern block; 22, outer shoulder pattern portion; 221, outer shoulder pattern block;

[0029] 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;

[0030] 41. a first connecting groove; 42. a second connecting groove;

[0031] 50. Structural reinforcement protrusions;

[0032] 61, first sheet structure; 62, second sheet structure; 63, third sheet structure; 64, fourth sheet structure; 65, fifth sheet structure; 651, first sub-sheet structure; 652, second sub-sheet structure; 653, third sub-sheet structure; 66, sixth sheet structure; 67, seventh sheet structure;

[0033] 71. The first concave part; 72. The second concave part; 73. The third concave part; 74. The fourth concave part; 75. The fifth concave part;

[0034] 81. First chamfer; 82. Second chamfer; 83. Third chamfer; 84. Fourth chamfer; 85. Fifth chamfer; 86. Sixth chamfer; 87. Seventh chamfer; 88. Eighth chamfer; 89. Ninth chamfer; 810. Tenth chamfer; 811. Eleventh chamfer; 812. Twelfth chamfer; 813. Thirteenth chamfer; 814. Fourteenth chamfer; 815. Fifteenth chamfer; 816. Sixteenth chamfer. DETAILED DESCRIPTION

[0035] 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.

[0036] 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.

[0037] 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.

[0038] In order to solve the problem that the tire tread structure in the prior art cannot take into account both the handling performance and the wear resistance of the tire.

[0039] like Figures 1 to 8 As shown, the multiple longitudinal grooves 10 of the tire tread structure all extend along the circumference of the tire, and the multiple longitudinal grooves 10 are arranged at intervals along the width direction of the tire to separate the tread into multiple middle pattern portions 30 located between two shoulder pattern portions 20. The contact surface between the tire and the driving surface has an area S1, and the area S2 of the tire tread structure satisfies the following relationship with the area S1: 0.66S2≤S1≤0.72S2; a first connecting groove 41 is arranged on the middle pattern portion 30, and the first connecting groove 41 is used to connect the longitudinal grooves 10 located on both sides of the middle pattern portion 30; wherein, there are multiple first connecting grooves 41, and the multiple first connecting grooves 41 are arranged at intervals along the circumference and / or width direction of the tire, and a structural reinforcement protrusion 50 is provided at the groove bottom of at least one first connecting groove 41.

[0040] According to the technical solution of this embodiment, the plurality of longitudinal grooves 10 of the tire tread structure extend 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 divide the tread into a plurality of middle pattern portions 30 located between two shoulder pattern portions 20. The contact surface between the tire and the driving surface has an area S1, and the area S2 of the tire tread structure satisfies the area S1: 0.66S2≤S1≤0.72S2. The first connecting groove 41 is arranged on the middle pattern portion 30, and the first connecting groove 41 is used to connect the longitudinal grooves 10 located on both sides of the middle pattern portion 30. There are a plurality of first connecting grooves 41, and the plurality of first connecting grooves 41 are arranged at intervals along the circumference and / or width direction of the tire, and a structural reinforcement protrusion 50 is arranged at the bottom of at least one first connecting groove 41. In this way, a tire with a larger pattern contact ratio (ratio setting between area S1 and area S2) makes the contact between the tire tread structure and the driving surface more complete and the pattern utilization rate higher, so as to improve the wear resistance and handling of the tire as a whole by improving the force uniformity of the tire tread structure, and the above-mentioned setting of the first connecting groove 41 and the longitudinal groove 10 improves the drainage performance of the tire, thereby improving the anti-skid performance (wet handling performance) of the tire. In addition, the setting of the structural reinforcement protrusion 50 improves the rigidity and stability of the pattern block adjacent to it, reduces the deformation of the pattern block, and further improves the wear resistance and handling performance of the tire, thereby solving the problem in the prior art that the tire tread structure cannot take into account the handling performance and wear resistance of the tire at the same time, and prolongs the service life of the tire.

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

[0042] Specifically, the tire tread structure is the portion of the tire that is the main contact portion between the tire and the running surface.

[0043] In this embodiment, the area S2 of the tire tread structure satisfies the area S1 as follows: area S1 = 0.69S2.

[0044] like Figure 1 and Figure 2As shown, the plurality of intermediate pattern portions 30 include a central pattern portion 32 and a crown pattern portion, at least a portion of the central pattern portion 32 coincides with the center plane S of the tire, and the crown pattern portion is located between the central pattern portion 32 and the shoulder pattern portion 20. The first connecting groove 41 is arranged on the crown pattern portion, and the first connecting groove 41 is arranged at a first angle A1 with the width direction of the tire, and the first angle A1 satisfies: 20°≤A1≤30°, and there are at least two structural reinforcement protrusions 50, and at least two structural reinforcement protrusions 50 are arranged at intervals along the extension direction of the first connecting groove 41. In this way, the above arrangement not only limits the setting position of the first connecting groove 41, but also limits the first angle A1 of the first connecting groove 41, so as to ensure that the inclination of the first connecting groove 41 is more appropriate, and further improve the drainage performance of the first connecting groove 41. At the same time, the limited number of structural reinforcement protrusions 50 can further increase the structural reinforcement effect.

[0045] Specifically, there are two structural reinforcement protrusions 50, which are respectively located at the two ends of the bottom of the first connecting groove 41. In this way, the above position limitation enables the two structural reinforcement protrusions 50 to uniformly reinforce the crown pattern portion, so as to avoid uneven rigidity improvement of the crown pattern portion, which affects the corresponding effect of the structural reinforcement protrusions 50.

[0046] In this embodiment, the structural reinforcement protrusion 50 is a boss, and its two ends are respectively connected to the groove wall of the first connecting groove 41. Specifically, during the rolling process of the tire, the first connecting groove 41 not only drains water, but also provides deformation space for each pattern block, which leads to a greater degree of deformation of the pattern block, affecting the force uniformity of the tire tread structure. By providing the structural reinforcement protrusion 50, the pattern blocks adjacent to the structural reinforcement protrusion 50 are connected to each other and affect each other during the deformation process, so that the deformation of the pattern block is suppressed by the structural reinforcement protrusion 50, thereby improving the rigidity and stability of each pattern block.

[0047] It should be noted that the number of the structure reinforcement protrusions 50 is not limited thereto, and can be adjusted according to working conditions and usage requirements. Optionally, the number of the structure reinforcement protrusions 50 is one, three, four, five, seven, eight, or more.

[0048] like Figure 3 As shown, the connection between the groove wall and the bottom wall of the first connecting groove 41 is provided with a first chamfer 81, and the groove wall of the first connecting groove 41 and the normal line of the first connecting groove 41 are provided at a seventh angle A7, and the seventh angle A7 satisfies: A7 = 3°. In this way, the above arrangement improves the stone removal performance of the tire, avoids the first connecting groove 41 from being mixed with stones and other impurities during the driving process of the tire, thereby improving the driving safety of the vehicle.

[0049] like Figure 1 and Figure 2 As shown, the crown pattern portion close to the inner side of the tire is the inner crown pattern portion 31, and a plurality of first connecting grooves 41 separate the inner crown pattern portion 31 into a plurality of inner crown pattern blocks 311. The tire tread structure also includes a first sheet structure 61, which is arranged in the inner crown pattern block 311, and the two ends of the first sheet structure 61 extend into the longitudinal grooves 10 located on both sides of the inner crown pattern portion 31. Among them, at least part of the first sheet structure 61 is arranged in a broken line shape or a wave shape, and the first sheet structure 61 is arranged at a second angle A2 with the width direction of the tire, and the second angle A2 satisfies: 20°≤A2≤30°. In this way, the above-mentioned setting of the first sheet structure 61 can, on the one hand, break the water film between the inner crown pattern portion 31 and the ground, thereby increasing the friction between the inner crown pattern portion 31 and the ground, thereby improving the wet handling of the tire; on the other hand, the first sheet structure 61 itself can also increase the bite force between the inner crown pattern portion 31 and the ground, which not only improves the snow performance of the tire, but also shortens the braking distance of the tire, thereby improving the driving safety of the vehicle. At the same time, by separating the inner crown pattern portion 31 through the first sheet structure 61, the overall rigidity of the inner crown pattern portion 31 can be reduced, thereby reducing the stress concentration of the tire tread structure and improving the driving comfort of the driver.

[0050] In this embodiment, the second chamfer 82 is provided at the corner of the inner crown pattern block 311. Thus, the above arrangement increases the water envelope area of ​​the tire on the one hand, improving the driving safety of the vehicle; on the other hand, it avoids the edge of the inner crown pattern block 311 being too sharp, which causes damage to the edge of the inner crown pattern block 311, thereby reducing the risk of the inner crown pattern block 311 falling off, thereby improving the wear resistance of the tire and extending the service life of the tire.

[0051] like Figure 1 and Figure 2As shown, the crown pattern portion close to the outer side of the tire is the outer crown pattern portion 33, and the tire tread structure also includes a first recess 71 and a second sheet structure 62. The first recess 71 is arranged on the outer crown pattern portion 33, one end of the first recess 71 extends to one side of the outer crown pattern portion 33, and the other end of the first recess 71 is at a preset distance from the other side of the outer crown pattern portion 33. The first recess 71 is arranged at a third angle A3 with the width direction of the tire, and the third angle A3 satisfies: 20°≤A3≤30°. There are multiple first recesses 71, and the multiple first recesses 71 are arranged at intervals along the circumferential direction of the tire. A first recess 71 is arranged between two adjacent first connecting grooves 41, so that the outer crown pattern portion 33 is divided into multiple outer crown pattern blocks 331 through the first connecting grooves 41 and the first recess 71. The second sheet-like structure 62 is arranged in the outer crown pattern block 331. In the two longitudinal grooves 10 adjacent to the outer crown pattern portion 33, one end of the second sheet-like structure 62 extends into one longitudinal groove 10, and the other end of the second sheet-like structure 62 is at a preset distance from the other longitudinal groove 10. In this way, the above arrangement of the second sheet-like structure 62 and the first concave portion 71 can, on the one hand, break the water film between the outer crown pattern portion 33 and the ground, increase the friction between the outer crown pattern portion 33 and the ground, and further improve the wet handling of the tire; on the other hand, the second sheet-like structure 62 itself can increase the bite force between the outer crown pattern portion 33 and the ground, which not only improves the snow traction performance of the tire, but also shortens the braking distance of the tire, and improves the driving safety of the vehicle. At the same time, by separating the outer crown pattern portion 33 through the second sheet-like structure 62, the overall rigidity of the outer crown pattern portion 33 can be reduced, thereby reducing the stress concentration of the tire tread structure and improving the driving comfort of the driver.

[0052] In this embodiment, a third chamfer 83 is provided at the corner of the outer crown pattern block 331. Thus, the above arrangement increases the water envelope area of ​​the tire on the one hand, improving the driving safety of the vehicle; on the other hand, it avoids the edge of the outer crown pattern block 331 being too sharp, which causes damage to the edge of the outer crown pattern block 331, reduces the risk of the outer crown pattern block 331 falling off, thereby improving the wear resistance of the tire and extending the service life of the tire.

[0053] like Figure 3 As shown, a fourth chamfer 84 is provided at the connection between the side wall and the bottom wall of the first recess 71, and an eighth angle A8 is formed between the side wall of the first recess 71 and the normal line of the first recess 71, and the eighth angle A8 satisfies: A8 = 3°. In this way, the above arrangement improves the stone removal performance of the tire to prevent the first recess 71 from being mixed with stones and other impurities during the driving process of the tire, thereby improving the driving safety of the vehicle.

[0054] In this embodiment, the first connecting groove 41 and the first recessed portion 71 are arranged parallel to each other to improve the aesthetics of the tire.

[0055] like Figure 1 and Figure 2 As shown, the tire tread structure further includes a third sheet structure 63 and a central pattern recess. The third sheet structure 63 is arranged in the central pattern portion 32, and the two ends of the third sheet structure 63 extend into the longitudinal grooves 10 located on both sides of the central pattern portion 32, respectively. There are multiple third sheet structures 63, and the multiple third sheet structures 63 are arranged at intervals along the circumference of the tire to separate the central pattern portion 32 into multiple central pattern blocks 321. The central pattern recess is arranged on the central pattern block 321, and one end of the central pattern recess extends to one side of the central pattern block 321, and the other end of the central pattern recess is at a preset distance from the other side of the central pattern block 321. Among them, the central pattern recess is multiple and includes a second recess 72 and a third recess 73, the second recess 72 and the third recess 73 extend to different sides of the central pattern block 321 respectively, the second recess 72 is set at a fourth angle A4 with the width direction of the tire, and the fourth angle A4 satisfies: 25°≤A4≤35°. The third recess 73 is set at a fifth angle A5 with the width direction of the tire, and the fifth angle A5 satisfies: 15°≤A5≤25°. In this way, the above-mentioned arrangement of the third sheet structure 63 and the central pattern recess, on the one hand, cuts the water film between the central pattern portion 32 and the ground, improves the friction between the central pattern portion 32 and the ground, and further improves the wet handling of the tire; on the other hand, the third sheet structure 63 itself can also increase the bite force between the central pattern portion 32 and the ground, which not only improves the snow performance of the tire, but also shortens the braking distance of the tire, thereby improving the driving safety of the vehicle. At the same time, the third sheet structure 63 separates the center tread portion 32 , which can reduce the overall rigidity of the outer center tread portion 32 , thereby reducing stress concentration in the tire tread structure and improving the driving comfort of the driver.

[0056] like Figure 4 As shown, the connection between the side wall and the bottom wall of the second recess 72 is provided with a fifth chamfer 85, and the side wall of the second recess 72 and the normal of the second recess 72 are arranged at a ninth angle A9, and the ninth angle A9 satisfies: A9 = 3°. The connection between the side wall and the bottom wall of the third recess 73 is provided with a sixth chamfer 86, and the side wall of the third recess 73 and the normal of the third recess 73 are arranged at a tenth angle A10, and the tenth angle A10 satisfies: A10 = 3°. In this way, the above arrangement improves the stone removal performance of the tire, so as to avoid the second recess 72 and the third recess 73 from being mixed with stones and other impurities during the driving process of the tire, thereby improving the driving safety of the vehicle.

[0057] like Figure 1 and Figure 2 As 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 further includes a second connecting groove 42 and a fourth sheet structure 64. The second connecting groove 42 is arranged on the inner shoulder pattern portion 21, and the second connecting groove 42 is used to connect the longitudinal groove 10 adjacent to the inner shoulder pattern portion 21 and the inner side of the tire. The second connecting groove 42 is arranged at a sixth angle A6 with the width direction of the tire, and the sixth angle A6 satisfies: 4°≤A6≤6°. There are multiple second connecting grooves 42, and the multiple second connecting grooves 42 are arranged at intervals along the circumferential direction of the tire to separate the inner shoulder pattern portion 21 into multiple inner shoulder pattern blocks 211. The fourth sheet structure 64 is arranged in the inner shoulder pattern block 211, one end of the fourth sheet structure 64 extends into the longitudinal groove 10, the other end of the fourth sheet structure 64 is at a preset distance from the side of the inner shoulder pattern block 211 away from the middle pattern portion 30, at least part of the fourth sheet structure 64 is arranged in a broken line or wave shape, and the length L of the fourth sheet structure 64 and the width W11 of the inner shoulder pattern portion 21 satisfy: 0.73W11≤L≤0.77W11. In this way, the arrangement of the second connecting groove 42 further improves the drainage performance of the tire, improves the anti-skid performance of the tire, and improves the wet handling performance of the tire. At the same time, the fourth sheet structure 64 cuts the water film between the inner shoulder pattern portion 21 and the ground, improves the friction between the inner shoulder pattern portion 21 and the ground, and further improves the wet handling of the tire; on the other hand, the fourth sheet structure 64 itself can also increase the bite force between the inner shoulder pattern portion 21 and the ground, which not only improves the snow performance of the tire, but also shortens the braking distance of the tire, thereby improving the driving safety of the vehicle. At the same time, the fourth sheet structure 64 separates the inner shoulder pattern portion 21, which can reduce the overall rigidity of the inner shoulder pattern portion 21, thereby reducing the stress concentration of the tire tread structure and improving the driving comfort of the driver.

[0058] In this embodiment, the corners of the inner shoulder pattern block 211 are provided with a seventh chamfer 87, and the corners of the outer shoulder pattern block 221 are provided with an eighth chamfer 88. Thus, the above arrangement increases the water envelope area of ​​the tire on the one hand, thereby improving the safety of the tire; on the other hand, it avoids the edges of the inner shoulder pattern block 211 and the outer shoulder pattern block 221 being too sharp, thereby avoiding damage to the edges of the inner shoulder pattern block 211 and the outer shoulder pattern block 221, reducing the risk of the blocks falling off, thereby improving the wear resistance of the tire, and further extending the service life of the tire.

[0059] like Figure 5As shown, the connection between the groove wall and the bottom wall of the second connecting groove 42 is provided with a ninth chamfer 89, one groove wall of the second connecting groove 42 and the normal line of the second connecting groove 42 are provided at an eleventh angle A11, and the eleventh angle A11 satisfies: A11 = 5°, another groove wall of the second connecting groove 42 and the normal line of the second connecting groove 42 are provided at a twelfth angle A12, and the twelfth angle A12 satisfies: A11 = 3°. In this way, the above arrangement improves the stone removal performance of the tire, so as to prevent the second connecting groove 42 from being mixed with stones and other impurities during the tire driving process, thereby improving the driving safety of the vehicle.

[0060] like Figure 1 and Figure 2 As shown, the tire tread structure further includes a fifth sheet-like structure 65. The fifth sheet-like structure 65 is arranged in the outer shoulder pattern portion 22, and the fifth sheet-like structure 65 includes a first sub-sheet-like structure 651, a second sub-sheet-like structure 652 and a third sub-sheet-like structure 653 which are connected to each other, the second sub-sheet-like structure 652 is located between the first sub-sheet-like structure 651 and the third sub-sheet-like structure 653, one end of the first sub-sheet-like structure 651 away from the second sub-sheet-like structure 652 extends into the longitudinal groove 10 adjacent to the outer shoulder pattern portion 22, one end of the third sub-sheet-like structure 653 away from the second sub-sheet-like structure 652 is at a preset distance from the side of the outer shoulder pattern portion 22 away from the middle pattern portion 30, the first sub-sheet-like structure 651 and the second sub-sheet-like structure 652 are arranged at an angle, and the second sub-sheet-like structure 652 and the third sub-sheet-like structure 653 are arranged at an angle. In this way, the above arrangement makes the fifth sheet structure 65 present a variable tortuous design, which cuts the water film between the outer shoulder pattern portion 22 and the ground, improves the friction between the outer shoulder pattern portion 22 and the ground, further improves the wet handling of the tire, and can also improve the bite force between the outer shoulder pattern portion 22 and the ground along the circumferential direction of the tire and the width direction of the tire, which not only improves the snow traction performance of the tire, but also shortens the braking distance of the tire, further improving the driving safety of the vehicle. At the same time, by separating the outer shoulder pattern portion 22 through the fifth sheet structure 65, the overall rigidity of the outer shoulder pattern portion 22 can be reduced, thereby reducing the stress concentration of the tire tread structure and improving the driving comfort of the driver.

[0061] In this embodiment, the above arrangement of the fifth sheet structure 65 is also beneficial to improving the overall aesthetics of the tire.

[0062] like Figure 1 and Figure 2As shown, the tire tread structure further includes a fourth recess 74 and a fifth recess 75. The fourth recess 74 is arranged on the outer shoulder pattern portion 22 and is located on the side of the second sub-lamellar structure 652 away from the middle pattern portion 30. One end of the fourth recess 74 extends to the side of the outer shoulder pattern portion 22 away from the middle pattern portion 30, and the other end of the fourth recess 74 extends to the second sub-lamellar structure 652. The length L of the fourth recess 74 and the width W15 of the outer shoulder pattern portion 22 satisfy: 0.83W15≤L≤087W15. The fifth recess 75 is arranged on the outer shoulder pattern portion 22 and is located on the side of the second sub-lamellar structure 652 away from the fourth recess 74. One end of the fifth recess 75 extends to the side of the outer shoulder pattern portion 22 close to the middle pattern portion 30, and the other end of the fifth recess 75 is at a preset distance from the second sub-lamellar structure 652. In this way, the above arrangement, on the one hand, breaks the water film between the outer shoulder pattern portion 22 and the ground, increases the friction between the outer shoulder pattern portion 22 and the ground, and further improves the wet handling of the tire; on the other hand, it increases the drainage capacity of the tire, and further improves the tire's anti-skid performance.

[0063] like Figure 5 As shown, the connection between the groove wall and the bottom wall of the fourth recess 74 is provided with a tenth chamfer 810, one groove wall of the fourth recess 74 is provided with a thirteenth angle A13 with the normal line of the fourth recess 74, and the thirteenth angle A13 satisfies: A13 = 5°, another groove wall of the fourth recess 74 is provided with a fourteenth angle A14 with the normal line of the fourth recess 74, and the fourteenth angle A14 satisfies: A14 = 3°. In this way, the above arrangement improves the stone removal performance of the tire, so as to prevent the fourth recess 74 from being mixed with stones and other impurities during the tire driving process, thereby improving the driving stability of the vehicle.

[0064] like Figure 1 and Figure 2As shown, there are a plurality of fourth recesses 74, and the plurality of fourth recesses 74 are arranged at intervals along the circumferential direction of the tire to separate the outer shoulder pattern portion 22 into a plurality of outer shoulder pattern blocks 221, and the plurality of outer shoulder pattern blocks 221 are arranged one-to-one with the plurality of center pattern blocks 321, and the plurality of inner crown pattern blocks 311 are arranged one-to-one with the plurality of center pattern blocks 321, and the plurality of inner shoulder pattern blocks 211 are arranged one-to-one with the plurality of center pattern blocks 321, and the plurality of outer crown pattern blocks 331 are arranged one-to-one with the plurality of center pattern blocks 321, and the center pattern blocks 321 and the inner crown pattern blocks 311 and the inner shoulder ... The pattern block 211, the outer crown pattern block 331 and the outer shoulder pattern block 221 form a sub-pattern group. The tire tread structure also includes N pattern groups, each pattern group includes at least two adjacent sub-pattern groups, and the pattern group has a length P. 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 in the N pattern groups satisfy: 1.11P3≤P1≤1.31P3, 1.00P3≤P2≤1.20P3, 1.23P3≤P4≤1.43P3, 1.37P3≤P5≤1.57P3. Among them, N satisfies: 64≤N≤76, and N is an even number. In this way, five pattern groups 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 driver's driving comfort.

[0065] In this embodiment, the length P of the pattern group is the pitch.

[0066] In this embodiment, the specific arrangement of the first pattern group, the second pattern group, the third pattern group, the fourth pattern group and the fifth pattern group 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, the second pattern group, the third pattern group, the fourth pattern group and the fifth pattern group can maximize the influence on the vibration frequency of the gas in the groove, thereby further reducing the driving noise of the tire.

[0067] like Figure 1 and Figure 2As shown, when the length P of the pattern group is greater than or equal to 25 cm, there are at least two fourth lamellar structures 64 in the inner shoulder pattern block 211 in the pattern group, and at least two fourth lamellar structures 64 are arranged at intervals along the circumference of the tire. There are at least two first lamellar structures 61 in the inner crown pattern block 311 in the pattern group, and at least two first lamellar structures 61 are arranged at intervals along the circumference of the tire. A sixth lamellar structure 66 is also arranged in the center pattern block 321 in the pattern group, and both ends of the sixth lamellar structure 66 extend into two longitudinal grooves 10 adjacent to the center pattern portion 32, respectively. There are at least two second lamellar structures 62 in the outer crown pattern block 331 in the pattern group, and at least two second lamellar structures 62 are arranged at intervals along the circumference of the tire. A seventh lamellar structure 67 is also provided in the outer shoulder pattern block 221 in the pattern group, and the seventh lamellar structure 67 is located between the third sub-lamellar structure 653 and the fourth recess 74; and / or, the contact surface between the tire tread structure and the driving surface has a width T, and the width W11 of the inner shoulder pattern portion 21, the width W12 of the outer shoulder pattern portion 22, the width W13 of the inner crown pattern portion 31, the width W14 of the center pattern portion 32, the width W15 of the outer crown pattern portion 33 and the width T satisfy: 0.175T≤W11≤0.205T, 0.110T≤W12≤0.140T, 0.115T≤W13≤0.145T, 0.112T≤W14≤0.142T, 0.175T≤W15≤0.205T. The width W11, the width W12, the width W13, the width W14 and the width W15 satisfy the following conditions: 1.50W13≤W11≤1.54W13, 1.51W13≤W12≤1.55W13, 1.02W13≤W14≤1.06W13, 1.00W13≤W15≤1.04W13; and / or, 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 arranged sequentially from the inner side of the tire to the outer side of the tire, and the width W21 of the first longitudinal groove 11 satisfies the following conditions: 0.054T≤W21≤0.074T. The width W22 of the second longitudinal groove 12 satisfies the following conditions: 0.049T≤W22≤0.069T. The width W23 of the third longitudinal groove 13 satisfies the following relationship with the width T: 0.049T≤W23≤0.069T. The width W24 of the fourth longitudinal groove 14 satisfies the following relationship with the width T: 0.046T≤W24≤0.066T. The widths W21, W22, W23 and W24 satisfy the following relationship: 1.14W24≤W21≤1.18W24, 1.03W24≤W22≤1.07W24, 1.03W24≤W23≤1.07W24.In this way, the above arrangement, on the one hand, makes the arrangement of the first sheet structure 61, the second sheet structure 62, the fourth sheet structure 64, the sixth sheet structure 66, the seventh sheet structure 67 and the length P of the pattern group more reasonable, that is, ensure that the number of each sheet structure can meet the requirements of different pitch lengths, so as to further improve the handling performance and comfort of the tire; on the other hand, the longitudinal grooves 10 and the width of the pattern portion at different positions are reasonably designed, which not only increases the groove area ratio on the inner side of the tire, thereby improving the wet handling performance of the tire, but also reduces the groove area ratio on the outer side of the tire, thereby increasing the ground contact rate of the tire and improving the dry handling performance of the tire. At the same time, while reducing the groove area ratio on the outer side of the tire, the pattern block area ratio on the outer side of the tire can be increased, thereby increasing the overall rigidity of the pattern block on the outer side of the tire, further improving the handling performance of the tire.

[0068] In this embodiment, the inner side of the tire and the outer side of the tire are separated by the center plane of the tire.

[0069] Specifically, the tire tread structure in the present application actually adopts an asymmetric design, that is, the groove area ratio in the inner area of ​​the tire is larger, and the groove area ratio in the outer area of ​​the tire is smaller.

[0070] In this embodiment, the widths W11, W12, W13, W14 and W15 satisfy the following conditions: W11=1.52W13, W12=1.53W13, W14=1.04W13, W15=1.02W13, to ensure that the width ratios between the widths W11, W12, W13, W14 and W15 are more appropriate, thereby further improving the rigidity of the tire tread blocks and the handling performance of the tire.

[0071] In this embodiment, the widths W21, W22, W23 and W24 satisfy the following conditions: W21=1.16W24, W22=1.05W24, W23=1.05W24, to ensure that the width ratios between W21, W22, W23 and W24 are more appropriate, further improving the drainage performance of the tire.

[0072] like Figure 6As shown, the connection between the groove wall and the groove bottom of the first longitudinal groove 11 is provided with an eleventh chamfer 811, a groove wall of the first longitudinal groove 11 is provided with a fifteenth angle A15 with the normal line of the first longitudinal groove 11, and the fifteenth angle A15 satisfies: A15 = 10°, and another groove wall of the first longitudinal groove 11 is provided with a sixteenth angle A16 with the normal line of the first longitudinal groove 11, and the sixteenth angle A16 satisfies: A16 = 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.

[0073] like Figure 7 As shown, the connection between the groove wall and the groove bottom of the second longitudinal groove 12 is provided with a twelfth chamfer 812, and the groove wall of the second longitudinal groove 12 and the normal of the second longitudinal groove 12 are provided at a seventeenth angle A17, and the seventh angle A7 satisfies: A17 = 8°. 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.

[0074] like Figure 7 As shown, the connection between the groove wall and the groove bottom of the third longitudinal groove 13 is provided with a thirteenth chamfer 813, and the groove wall of the third longitudinal groove 13 and the normal line of the third longitudinal groove 13 are provided at an eighteenth angle A18, and the eighteenth angle A18 satisfies: A18 = 8°. 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.

[0075] like Figure 8 As shown, the connection between the groove wall and the groove bottom of the fourth longitudinal groove 14 is provided with a fourteenth chamfer 814, a groove wall of the fourth longitudinal groove 14 and the normal of the fourth longitudinal groove 14 are provided at a nineteenth angle A9, the nineteenth angle A19 satisfies: A19 = 10°, another groove wall of the fourth longitudinal groove 14 and the normal of the fourth longitudinal groove 14 are provided at a twentieth angle A20, the twentieth angle A20 satisfies: A20 = 12°. 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.

[0076] Specifically, a plurality of fifteenth chamfers 815 are provided on one side of the inner shoulder block 211 close to the first longitudinal groove 11 , and a width W41 of the fifteenth chamfer 815 satisfies: 0mm<W41≤3mm, and the width W41 of each fifteenth chamfer 815 gradually decreases along the circumference of the tire.

[0077] A plurality of sixteenth chamfers 816 are provided on one side of the inner crown block 311 close to the first longitudinal groove 11 , and a width W42 of the sixteenth chamfer 816 satisfies: 0mm<W42≤3mm, and the width W42 of each sixteenth chamfer 816 gradually increases along the circumferential direction of the tire.

[0078] Specifically, the width W31 of the second connecting groove 42 and the length P of the pattern group where the second connecting groove 42 is located satisfy the following: 0.118P≤W31≤0.138P.

[0079] Specifically, the width W32 of the fourth recessed portion 74 and the length P of the pattern group where the fourth recessed portion 74 is located satisfy the following relationship: 0.102P≤W32≤0.122P.

[0080] It should be noted that, in this embodiment, the first sheet structure 61 , the second sheet structure 62 , the third sheet structure 63 , the fourth sheet structure 64 , the fifth sheet structure 65 , the sixth sheet structure 66 , and the seventh sheet structure 67 are all steel sheets.

[0081] Specifically, the first sheet structure 61, the second sheet structure 62, the third sheet structure 63, the fourth sheet structure 64, the fifth sheet structure 65, the sixth sheet structure 66, the seventh sheet structure 67, the first recess 71, the second recess 72, the third recess 73, the fourth recess 74 and the fifth recess 75 are all 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.

[0082] The present application also provides a tire (not shown), which includes the tire tread structure described above.

[0083] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0084] The multiple longitudinal grooves of the tire tread structure all extend along the circumference of the tire, and the multiple longitudinal grooves are arranged at intervals along the width direction of the tire to separate the tread into multiple intermediate pattern portions located between two shoulder pattern portions. The contact surface between the tire and the driving surface has an area S1, and the area S2 of the tire tread structure satisfies the area S1: 0.66S2≤S1≤0.72S2; a first connecting groove is arranged on the intermediate pattern portion, and the first connecting groove is used to connect the longitudinal grooves located on both sides of the intermediate pattern portion; wherein, there are multiple first connecting grooves, and the multiple first connecting grooves are arranged at intervals along the circumference and / or width direction of the tire, and a structural reinforcement protrusion is provided at the groove bottom of at least one first connecting groove. In this way, a tire with a larger pattern contact ratio (ratio setting between area S1 and area S2) makes the contact between the tire tread structure and the driving surface more complete and the pattern utilization rate higher, so as to improve the wear resistance and handling of the tire as a whole by improving the force uniformity of the tire tread structure, and the above-mentioned setting of the first connecting groove and the longitudinal groove improves the drainage performance of the tire, thereby improving the anti-skid performance (wet handling performance) of the tire. In addition, the setting of the structural reinforcement protrusion improves the rigidity and stability of the adjacent pattern blocks, reduces the deformation of the pattern blocks, and further improves the wear resistance and handling performance of the tire, thereby solving the problem in the prior art that the tire tread structure cannot take into account the handling performance and wear resistance of the tire at the same time, and prolongs the service life of the tire.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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, the plurality of longitudinal grooves (10) being arranged at intervals along the width direction of the tire so as to divide the tread into a plurality of intermediate pattern portions (30) located between two shoulder pattern portions (20), the contact surface between the tire and the running surface having an area S1, and an area S2 of the tire tread structure and the area S1 satisfying the following relationship: 0.66S2≤S1≤0.72S2; A first connecting groove (41) is provided on the middle tread portion (30), wherein the first connecting groove (41) is used to connect the longitudinal grooves (10) located on both sides of the middle tread portion (30); There are a plurality of first connecting grooves (41), and the plurality of first connecting grooves (41) are arranged at intervals along the circumferential direction and / or width direction of the tire, and a structural reinforcement protrusion (50) is provided at the bottom of at least one of the first connecting grooves (41).

2. The tire tread structure according to claim 1, characterized in that: The plurality of intermediate tread portions (30) include a central tread portion (32) and a crown tread portion, wherein at least a portion of the central tread portion (32) coincides with a center plane S of the tire, and the crown tread portion is located between the central tread portion (32) and the shoulder tread portion (20); The first connecting groove (41) is arranged on the crown pattern portion, and the first connecting groove (41) is arranged at a first angle A1 with the width direction of the tire, and the first angle A1 satisfies: 20°≤A1≤30°, and there are at least two structural reinforcement protrusions (50), and at least two of the structural reinforcement protrusions (50) are arranged at intervals along the extension direction of the first connecting groove (41).

3. The tire tread structure according to claim 2, characterized in that: The crown pattern portion close to the inner side of the tire is an inner crown pattern portion (31), and the plurality of first connecting grooves (41) separate the inner crown pattern portion (31) into a plurality of inner crown pattern blocks (311). The tire tread structure further comprises: A first sheet-like structure (61) is arranged in the inner tread crown pattern block (311), and two ends of the first sheet-like structure (61) extend into the longitudinal grooves (10) located on both sides of the inner tread crown pattern portion (31); At least part of the first sheet-like structure (61) is arranged in a zigzag or wavy shape, and the first sheet-like structure (61) is arranged at a second angle A2 with respect to the width direction of the tire, and the second angle A2 satisfies: 20°≤A2≤30°.

4. The tire tread structure according to claim 3, characterized in that: The crown pattern portion close to the outer side of the tire is an outer crown pattern portion (33), and the tire tread structure further includes: A first recess (71) is arranged on the outer tread crown pattern portion (33), one end of the first recess (71) extends to a side surface of the outer tread crown pattern portion (33), the other end of the first recess (71) and the other side surface of the outer tread crown pattern portion (33) are at a preset distance, the first recess (71) is arranged at a third angle A3 with respect to the width direction of the tire, and the third angle A3 satisfies: 20°≤A3≤30°; wherein the first recess (71) is multiple, the multiple first recesses (71) are arranged at intervals along the circumferential direction of the tire, and one first recess (71) is arranged between two adjacent first connecting grooves (41), so that the outer tread crown pattern portion (33) is divided into multiple outer tread crown pattern blocks (331) by the first connecting groove (41) and the first recess (71); A second sheet-like structure (62) is arranged in the outer crown tread block (331), and in two longitudinal grooves (10) adjacent to the outer crown tread portion (33), one end of the second sheet-like structure (62) extends into one longitudinal groove (10), and a preset distance is provided between the other end of the second sheet-like structure (62) and the other longitudinal groove (10).

5. The tire tread structure according to claim 4, characterized in that: The tire tread structure further comprises: A third sheet-like structure (63) is arranged in the central tread portion (32), and two ends of the third sheet-like structure (63) respectively extend into the longitudinal grooves (10) located on both sides of the central tread portion (32). There are a plurality of third sheet-like structures (63), and the plurality of third sheet-like structures (63) are arranged at intervals along the circumference of the tire to divide the central tread portion (32) into a plurality of central tread blocks (321); A central pattern recess is arranged on the central pattern block (321), one end of the central pattern recess extends to a side surface of the central pattern block (321), and a preset distance is provided between the other end of the central pattern recess and the other side surface of the central pattern block (321); wherein the central pattern recess is multiple and includes a second recess (72) and a third recess (73), the second recess (72) and the third recess (73) respectively extending to different side surfaces of the central pattern block (321), the second recess (72) and the third recess (73) being arranged at a fourth angle A4 with respect to the width direction of the tire, the fourth angle A4 satisfying: 25°≤A4≤35°; the third recess (73) and the width direction of the tire being arranged at a fifth angle A5, the fifth angle A5 satisfying: 15°≤A5≤25°.

6. The tire tread structure according to claim 5, 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 second connecting groove (42) is arranged on the inner shoulder pattern portion (21), the second connecting groove (42) is used to connect the longitudinal groove (10) adjacent to the inner shoulder pattern portion (21) and the inner side of the tire, the second connecting groove (42) is arranged at a sixth angle A6 with the width direction of the tire, and the sixth angle A6 satisfies: 4°≤A6≤6°; wherein there are a plurality of second connecting grooves (42), and the plurality of second connecting grooves (42) are arranged at intervals along the circumferential direction of the tire to separate the inner shoulder pattern portion (211) into a plurality of inner shoulder pattern blocks (211); A fourth sheet-like structure (64) is arranged in the inner shoulder tread block (211), one end of the fourth sheet-like structure (64) extends into the longitudinal groove (10), and a preset distance is provided between the other end of the fourth sheet-like structure (64) and the side surface of the inner shoulder tread block (211) away from the middle tread portion (30), at least a portion of the fourth sheet-like structure (64) is arranged in a broken line shape or a wave shape, and a length L of the fourth sheet-like structure (64) and a width W11 of the inner shoulder tread portion (21) satisfy the following relationship: 0.73W11≤L≤0.77W11.

7. The tire tread structure according to claim 6, characterized in that: The tire tread structure further comprises: A fifth sheet-like structure (65) is arranged in the outer shoulder pattern portion (22), the fifth sheet-like structure (65) comprising a first sub-sheet-like structure (651), a second sub-sheet-like structure (652) and a third sub-sheet-like structure (653) which are connected to each other, the second sub-sheet-like structure (652) being located between the first sub-sheet-like structure (651) and the third sub-sheet-like structure (653), and the first sub-sheet-like structure (651) extending from one end of the second sub-sheet-like structure (652) to the third sub-sheet-like structure (653). In the longitudinal groove (10) adjacent to the outer shoulder pattern portion (22), a preset distance is provided between an end of the third sub-sheet-like structure (653) away from the second sub-sheet-like structure (652) and a side surface of the outer shoulder pattern portion (22) away from the intermediate pattern portion (30), the first sub-sheet-like structure (651) and the second sub-sheet-like structure (652) are arranged at an angle, and the second sub-sheet-like structure (652) and the third sub-sheet-like structure (653) are arranged at an angle.

8. The tire tread structure according to claim 7, characterized in that: The tire tread structure further comprises: A fourth recess (74) is arranged on the outer shoulder pattern portion (22) and is located on a side of the second sub-sheet structure away from the middle pattern portion (30), one end of the fourth recess (74) extends to a side of the outer shoulder pattern portion (22) away from the middle pattern portion (30), and the other end of the fourth recess (74) extends to the second sub-sheet structure (652), and a length L of the fourth recess (74) and a width W15 of the outer shoulder pattern portion (22) satisfy the following relationship: 0.83W15≤L≤0.87W15; A fifth recess (75) is arranged on the outer shoulder tread portion (22) on a side of the second sub-sheet structure (652) away from the fourth recess (74), one end of the fifth recess (75) extends to the side of the outer shoulder tread portion (22) close to the middle tread portion (30), and the other end of the fifth recess (75) has a preset distance from the second sub-sheet structure (652).

9. The tire tread structure according to claim 8, characterized in that: There are a plurality of fourth recesses (74), and the plurality of fourth recesses (74) are arranged at intervals along the circumferential direction of the tire to separate the outer shoulder pattern portion (22) into a plurality of outer shoulder pattern blocks (221), the plurality of outer shoulder pattern blocks (221) are arranged in one-to-one correspondence with the plurality of center pattern blocks (321), the plurality of inner crown pattern blocks (311) are arranged in one-to-one correspondence with the plurality of center pattern blocks (321), and the plurality of The inner shoulder pattern blocks (211) are arranged in one-to-one correspondence with the plurality of the central pattern blocks (321); the plurality of the outer crown pattern blocks (331) are arranged in one-to-one correspondence with the plurality of the central pattern blocks (321); the central pattern blocks (321) and the corresponding inner crown pattern blocks (311), the inner shoulder pattern blocks (211), the outer crown pattern blocks (331) and the outer shoulder pattern blocks (221) form a sub-pattern group. The tire tread structure also includes N pattern groups, each of which includes at least two adjacent sub-pattern groups, and the pattern group has a length P. 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 among the N pattern groups satisfy: 1.11P3≤P1≤1.31P3, 1.00P3≤P2≤1.20P3, 1.23P3≤P4≤1.43P3, 1.37P3≤P5≤1.57P3; wherein, N satisfies: 64≤N≤76, and N is an even number.

10. The tire tread structure according to claim 9, characterized in that: When the length P of the pattern group is greater than or equal to 25 cm, there are at least two fourth lamellar structures (64) in the inner shoulder pattern block (211) in the pattern group, and at least two of the fourth lamellar structures (64) are arranged at intervals along the circumference of the tire; there are at least two first lamellar structures (61) in the inner crown pattern block (311) in the pattern group, and at least two of the first lamellar structures (61) are arranged at intervals along the circumference of the tire; and a sixth lamellar structure (61) is further arranged in the center pattern block (321) in the pattern group. 6), the two ends of the sixth lamellar structure (66) respectively extend into two longitudinal grooves (10) adjacent to the central tread portion (32), the number of second lamellar structures (62) in the outer crown tread block (331) in the tread group is at least two, and the at least two second lamellar structures (62) are arranged at intervals along the circumferential direction of the tire; the seventh lamellar structure (67) is also arranged in the outer shoulder tread block (221) in the tread group, and the seventh lamellar structure (67) is located between the third sub-lamellar structure and the fourth recess (74); and / or, The contact surface between the tire tread structure and the running surface has a width T, and the width W11 of the inner shoulder pattern portion (21), the width W12 of the outer shoulder pattern portion (22), the width W13 of the inner crown pattern portion (31), the width W14 of the center pattern portion (32), the width W15 of the outer crown pattern portion (33) and the width T satisfy the following conditions: 0.175T≤W11≤0.205T, 0.110T≤W12≤0.140T, 0.115T≤ W13≤0.145T, 0.112T≤W14≤0.142T, 0.175T≤W15≤0.205T; the width W11, the width W12, the width W13, the width W14 and the width W15 satisfy the following: 1.50W13≤W11≤1.54W13, 1.51W13≤W12≤1.55W13, 1.02W13≤W14≤1.06W13, 1.00W13≤W15≤1.04W13; and / or, 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) which are sequentially arranged from the inner side of the tire to the outer side of the tire, wherein the width W21 of the first longitudinal groove (11) satisfies the width T as follows: 0.054T≤W21≤0.074T; the width W22 of the second longitudinal groove (12) satisfies the width T as follows: 0.049T≤W22≤0.069T; the width W23 of the third longitudinal groove (13) satisfies the width T as follows: 13) and the width T satisfy: 0.049T≤W23≤0.069T; the width W24 of the fourth longitudinal groove (14) and the width T satisfy: 0.046T≤W24≤0.066T; the width W21, the width W22, the width W23 and the width W24 satisfy: 1.14W24≤W21≤1.18W24, 1.03W24≤W22≤1.07W24, 1.03W24≤W23≤1.07W24.

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