Tire tread structure and tire with same

Abstract

The utility model provides a tire tread structure and a tire with the same. The tire tread structure comprises a plurality of longitudinal grooves, and each longitudinal groove divides a tread into two tire shoulder pattern parts and a middle pattern part located between the two tire shoulder pattern parts; the communication grooves are formed in the middle pattern part, the number of the communication grooves is multiple, and the multiple communication grooves are formed in the circumferential direction of the tire at intervals so as to divide the middle pattern part into multiple middle pattern blocks; the first sheet-shaped structure is arranged in the middle pattern block, the first sheet-shaped structure comprises at least two sub sheet-shaped structures which are connected with each other, a first included angle A1 is formed between every two adjacent sub sheet-shaped structures, and the first included angle A1 is more than 45 degrees and less than 135 degrees; wherein the number of the first sheet-shaped structures arranged in each middle pattern block is at least two, and the at least two first sheet-shaped structures are arranged in the circumferential direction of the tire at intervals. According to the utility model, the problem that the running noise of a tire of a light heavy-duty automobile in the prior art is high is effectively solved.

Description

Technical Field

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

[0002] At present, the main source of automobile driving noise is the collision noise and gas explosion noise generated between the tire tread structure and the ground when the tire is rolling. The staff usually improves the pattern structure of the tire tread, such as using a multi-pitch pattern structure, to reduce the driving noise of the tire by disrupting the gas flow and reducing the resonance frequency.

[0003] However, with the gradual popularization of light and heavy-duty vehicles, people have higher and higher requirements on vehicle driving noise, and the noise improvement effect brought about by conventional pattern structure improvements can no longer meet people's needs. Utility Model Content

[0004] The main purpose of the utility model is to provide a tire tread structure and a tire having the same, so as to solve the problem of relatively large running noise of tires of light and heavy-load vehicles in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a tire tread structure is provided, comprising: 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 two shoulder pattern portions and an intermediate pattern portion located between the two shoulder pattern portions; a connecting groove, arranged on the intermediate pattern portion, the connecting groove is used to connect the longitudinal grooves located on both sides of the intermediate pattern portion, there are a plurality of connecting grooves, and the plurality of connecting grooves are arranged at intervals along the circumference of the tire to separate the intermediate pattern portion into a plurality of intermediate pattern blocks; a first sheet-like structure, arranged in the intermediate pattern block, the first sheet-like structure comprising at least two interconnected sub-sheet-like structures, and the first angle A1 is formed between two adjacent sub-sheet-like structures, and the first angle A1 satisfies: 45°<A1<135°; wherein, there are at least two first sheet-like structures arranged in each intermediate pattern block, and at least two first sheet-like structures are arranged at intervals along the circumference of the tire.

[0006] Furthermore, among two adjacent first sheet-like structures, at least one sub-sheet-like structure of one first sheet-like structure extends into the longitudinal groove located on one side of the middle pattern block, and at least one sub-sheet-like structure of the other first sheet-like structure extends into the longitudinal groove located on the other side of the middle pattern block; wherein, the two sub-sheet-like structures extending into the longitudinal groove surround and form a preset area, and the remaining sub-sheet-like structures of the first sheet-like structure are located in the preset area; at least part of the first sheet-like structure is made of hard material.

[0007] Furthermore, at least two sub-sheet structures include a first sub-sheet structure and a second sub-sheet structure, and one end of the first sub-sheet structure away from the second sub-sheet structure extends into the longitudinal groove located on one side of the middle pattern block, and the second sub-sheet structure is located in a preset area; wherein, there is a first preset distance between one end of the second sub-sheet structure away from the first sheet structure and the longitudinal groove located on the other side of the middle pattern block; the thickness G1 of the first sheet structure satisfies: 0.6mm≤G1≤1mm, the first sub-sheet structure is set at a second angle A2 with the width direction of the tire, the second angle A2 satisfies: 30°≤A2≤45°, and the length B1 of the first sub-sheet structure and the width W1 of the middle pattern block satisfy: B1≥2 / 3W1.

[0008] Furthermore, the tire tread structure also includes: a first recess, which is arranged on the shoulder pattern portion, the first recess includes a first sub-recess and a second sub-recess which are interconnected, an end of the first sub-recess away from the second sub-recess extends to the side of the shoulder pattern portion away from the middle pattern portion, and an end of the second sub-recess away from the first sub-recess has a second preset distance from the side of the shoulder pattern portion close to the middle pattern portion; wherein an extension direction of the first sub-recess is arranged at a third angle A3 with respect to an extension direction of the second sub-recess, and the third angle A3 satisfies: 130°≤A3≤140°.

[0009] Furthermore, there are multiple first recesses, and the multiple first recesses are arranged at intervals along the circumference of the tire to separate the shoulder pattern portion into multiple shoulder pattern blocks. The tire tread structure also includes: a second recess, which is arranged on the shoulder pattern block, and the second recess extends along the circumference of the tire; a second sheet structure, which is arranged in an arc shape, and the second sheet structure is arranged in the shoulder pattern block and is located on the side of the second recess close to the middle pattern portion, one end of the second sheet structure extends into the second recess, and the other end of the second sheet structure has a third preset distance S1 from the longitudinal groove located on one side of the shoulder pattern portion, and the third preset distance S1 satisfies: 5mm≤S1≤8mm, and the thickness G2 of the second sheet structure satisfies: 0.6mm≤G2≤1mm.

[0010] Furthermore, the middle pattern block is arranged corresponding to the shoulder pattern block, there are at least two middle pattern parts, in two adjacent middle pattern parts, the middle pattern block of one middle pattern part is arranged corresponding to the middle pattern block of the other middle pattern part, and the middle pattern block, the middle pattern block arranged corresponding to the middle pattern block and the shoulder pattern block form a pattern group; wherein, there are multiple pattern groups, the multiple pattern groups include a first pattern group, a second pattern group and a third pattern group, and the length L1 of the first pattern group, the length L2 of the second pattern group and the length L3 of the third pattern group satisfy: 1.14L1≤L2≤1.24L1, 1.31L1≤L3≤1.39L1.

[0011] Furthermore, each longitudinal groove is arranged in a wave shape, and the multiple longitudinal grooves include a first longitudinal groove and a second longitudinal groove. The cross-section of the first longitudinal groove is polygonal, and the connection between the groove wall and the groove bottom of the first longitudinal groove has a first chamfer. The groove wall of the first longitudinal groove and the normal of the first longitudinal groove are set at a fourth angle A4, and the fourth angle A4 satisfies: 5°≤A4≤9°, and the depth H1 of the first longitudinal groove satisfies: 6mm≤H1≤10mm; the cross-section of the second longitudinal groove is polygonal, and the connection between the groove wall and the groove bottom of the second longitudinal groove has a second chamfer. The groove wall of the second longitudinal groove and the normal of the second longitudinal groove are set at a fifth angle A5, and the fifth angle A5 satisfies: 8°≤A5≤12°, and the depth H2 of the second longitudinal groove satisfies: 6mm≤H2≤10mm.

[0012] Further, the bottom of the connecting groove is arranged in an arc shape, and the groove wall of the connecting groove is arranged at a sixth angle A6 with the normal of the connecting groove, and the sixth angle A6 satisfies: 1°≤A6≤5°, and the depth H3 of the connecting groove satisfies: 4mm≤H3≤8mm; and / or, the bottom wall of the first recess is arranged in an arc shape, and the side wall of the first recess is arranged at a seventh angle A7 with the normal of the first recess, and the seventh angle A7 satisfies: 3°≤A7≤7°; and / or, the cross-section of the second recess is polygonal, and the connection between the side wall and the bottom wall of the second recess has a third chamfer, and the depth H5 of the second recess satisfies: 0.5mm≤H5≤1.5mm.

[0013] Furthermore, a fourth chamfer is provided at at least part of the corner of the middle pattern block away from the tread, and a depth H4 of the fourth chamfer satisfies: 4mm≤H4≤8mm; and / or, in an area T where the tire tread structure contacts the running surface, a contact area M2 between the area T and the running surface and an area M1 of the area T satisfy: 0.7M1≤M2≤0.73M1; and / or, a width W1 of the connecting groove satisfies: 3mm≤W1≤4mm.

[0014] According to another aspect of the utility model, a tire is provided, the tire comprising the above tire tread structure.

[0015] According to the technical solution of the utility model, the tire tread structure has 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 two shoulder pattern parts and an intermediate pattern part located between the two shoulder pattern parts, and a connecting groove is arranged on the intermediate pattern part, and the connecting groove is used to connect the longitudinal grooves located on both sides of the intermediate pattern part, and there are a plurality of connecting grooves, and the plurality of connecting grooves are arranged at intervals along the circumference of the tire to separate the intermediate pattern part into a plurality of intermediate pattern blocks, and the first sheet-like structure is arranged in the intermediate pattern block, and the first sheet-like structure includes at least two interconnected sub-sheet-like structures, and the adjacent two sub-sheet-like structures are arranged at a first angle A1, and the first angle A1 satisfies: 45°<A1<135°. Among them, there are at least two first sheet-like structures arranged in each intermediate pattern block, and at least two first sheet-like structures are arranged at intervals along the circumference of the tire. In this way, the middle pattern block is the part that mainly contacts the running surface during the running of the tire. The above arrangement of the first sheet structure in the middle pattern block can reduce the impact noise between the tire tread structure and the running surface, thereby reducing the running noise of the tire, solving the problem of high running noise of tires of light and heavy-duty vehicles in the prior art. At the same time, multiple middle pattern blocks arranged at intervals along the circumference of the tire can improve the uniformity of the rigidity distribution of the tire tread structure, thereby avoiding the phenomenon of local wear, extending the service life of the tire, and improving the rolling resistance performance of the tire. 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 schematic cross-sectional view of the tire tread structure at aa in FIG.

[0019] Figure 3 Shows Figure 1 A schematic cross-sectional view of the tire tread structure at bb;

[0020] Figure 4 Shows Figure 1 A schematic cross-sectional view of the tire tread structure at cc;

[0021] Figure 5 Shows Figure 1 A schematic cross-sectional view of the tire tread structure at ee;

[0022] Figure 6 Shows Figure 1 A schematic cross-sectional view of the tire tread structure at ff;

[0023] Figure 7 Shows Figure 1 A schematic cross-sectional view of the tire tread structure at dd;

[0024] Figure 8 Shows Figure 1 Schematic diagram of the cross-section at ii 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;

[0027] 20. Shoulder tread portion; 21. Shoulder tread block;

[0028] 30. middle pattern part; 31. middle pattern block;

[0029] 40. Connecting grooves;

[0030] 50. a first sheet-like structure; 51. a first sub-sheet-like structure; 52. a second sub-sheet-like structure;

[0031] 60. The first recess; 61. The first sub-recess; 62. The second sub-recess;

[0032] 70. The second concave part;

[0033] 80. A second sheet structure;

[0034] 90, pattern group;

[0035] 100. Fourth chamfer. DETAILED DESCRIPTION

[0036] 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.

[0037] 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.

[0038] 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.

[0039] In order to solve the problem of high driving noise of tires of light and heavy-duty vehicles in the prior art, the present application provides a tire tread structure and a tire having the same.

[0040] like Figures 1 to 8 As shown, the tire tread structure includes a plurality of longitudinal grooves 10, connecting grooves 40 and a first sheet-like structure 50. Each longitudinal groove 10 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 two shoulder pattern portions 20 and a middle pattern portion 30 located between the two shoulder pattern portions 20. The connecting grooves 40 are arranged on the middle pattern portion 30. The connecting grooves 40 are used to connect the longitudinal grooves 10 located on both sides of the middle pattern portion 30. There are a plurality of connecting grooves 40. The plurality of connecting grooves 40 are arranged at intervals along the circumference of the tire to separate the middle pattern portion 30 into a plurality of middle pattern blocks 31. The first sheet-like structure 50 is arranged in the middle pattern block 31. The first sheet-like structure 50 includes at least two interconnected sub-sheet-like structures. The two adjacent sub-sheet-like structures are arranged at a first angle A1. The first angle A1 satisfies: 45°<A1<135°. There are at least two first sheet-like structures 50 disposed in each middle pattern block 31 , and the at least two first sheet-like structures 50 are spaced apart along the circumferential direction of the tire.

[0041] Applying the technical solution of this embodiment, the tire tread structure has 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 two shoulder pattern portions 20 and an intermediate pattern portion 30 located between the two shoulder pattern portions 20. A connecting groove 40 is arranged on the intermediate pattern portion 30. The connecting groove 40 is used to connect the longitudinal grooves 10 located on both sides of the intermediate pattern portion 30. There are a plurality of connecting grooves 40, and the plurality of connecting grooves 40 are arranged at intervals along the circumference of the tire to separate the intermediate pattern portion 30 into a plurality of intermediate pattern blocks 31. A first sheet structure 50 is arranged in the intermediate pattern block 31. The first sheet structure 50 includes at least two interconnected sub-sheet structures. Two adjacent sub-sheet structures are arranged at a first angle A1, and the first angle A1 satisfies: 45°<A1<135°. There are at least two first sheet structures 50 arranged in each middle pattern block 31, and at least two first sheet structures 50 are arranged at intervals along the circumference of the tire. In this way, the middle pattern block 31 is the part that mainly contacts the driving surface during the driving process of the tire. The above arrangement of the first sheet structure 50 located in the middle pattern block 31 can reduce the impact noise between the tire tread structure and the driving surface, thereby reducing the driving noise of the tire, and solving the problem of large driving noise of tires of light and heavy-duty vehicles in the prior art. At the same time, multiple middle pattern blocks 31 arranged at intervals along the circumference of the tire can improve the uniformity of the rigidity distribution of the tire tread structure, thereby avoiding the phenomenon of local wear, extending the service life of the tire, and improving the rolling resistance performance of the tire.

[0042] Optionally, in two adjacent first sheet structures 50, at least one sub-sheet structure of one first sheet structure 50 extends into the longitudinal groove 10 located on one side of the middle pattern block 31, and at least one sub-sheet structure of the other first sheet structure 50 extends into the longitudinal groove 10 located on the other side of the middle pattern block 31. The two sub-sheet structures extending into the longitudinal groove 10 surround and form a preset area, and the remaining sub-sheet structures of the first sheet structure 50 are located in the preset area. At least part of the first sheet structure 50 is made of hard material. In this way, the above-mentioned setting of the first sheet structure 50 can, on the one hand, further enhance the ability of the first sheet structure 50 to reduce impact noise, thereby reducing the driving noise of the tire; on the other hand, it makes the number of sheet structures more flexible and diverse, so as to adapt to different working conditions and usage requirements, and also enhances the processing flexibility of the staff.

[0043] In this embodiment, at least two sub-lamellar structures include a first sub-lamellar structure 51 and a second sub-lamellar structure 52, wherein one end of the first sub-lamellar structure 51 away from the second sub-lamellar structure 52 extends into the longitudinal groove 10 located on one side of the middle pattern block 31, and the second sub-lamellar structure 52 is located in a preset area. There is a first preset distance between one end of the second sub-lamellar structure 52 away from the first lamellar structure 50 and the longitudinal groove 10 located on the other side of the middle pattern block 31. The thickness G1 of the first lamellar structure 50 satisfies: 0.6mm≤G1≤1mm, the first sub-lamellar structure 51 is arranged at a second angle A2 with the width direction of the tire, and the second angle A2 satisfies: 30°≤A2≤45°, and the length B1 of the first sub-lamellar structure 51 and the width W1 of the middle pattern block 31 satisfy: B1≥2 / 3W1. In this way, the above arrangement enables two adjacent first sheet structures 50 to form a combined structure that is plugged into each other and approximately centrally symmetrical, so as to enhance the ability of the first sheet structure 50 to reduce impact noise. At the same time, the above arrangement of the first sub-sheet structure 51 and the second sub-sheet structure 52 makes the structural design and parameter values ​​of the two more reasonable, further enhancing the ability of the first sheet structure 50 to reduce impact noise.

[0044] like Figure 1 As shown, the tire tread structure also includes a first recess 60, which is arranged on the shoulder pattern portion 20. The first recess 60 includes a first sub-recess 61 and a second sub-recess 62 that are interconnected. One end of the first sub-recess 61 away from the second sub-recess 62 extends to the side of the shoulder pattern portion 20 away from the middle pattern portion 30, and a second preset distance is provided between one end of the second sub-recess 62 away from the first sub-recess 61 and the side of the shoulder pattern portion 20 close to the middle pattern portion 30. The extension direction of the first sub-recess 61 and the extension direction of the second sub-recess 62 are arranged at a third angle A3, and the third angle A3 satisfies: 130°≤A3≤140°. In this way, the above-mentioned arrangement of the first recess 60 can improve the drainage performance of the tire when driving on a slippery road, thereby improving the handling performance of the tire; on the other hand, it can reduce the impact noise between the shoulder pattern portion 20 and the driving surface, thereby reducing the driving noise of the tire and improving the driving comfort of the user.

[0045] like Figure 1As shown, there are a plurality of first recesses 60, and the plurality of first recesses 60 are arranged at intervals along the circumferential direction of the tire to separate the shoulder pattern portion 20 into a plurality of shoulder pattern blocks 21. The tire tread structure also includes a second recess 70 and a second sheet structure 80. The second recess 70 is arranged on the shoulder pattern block 21, and the second recess 70 extends along the circumferential direction of the tire. The second sheet structure 80 is arranged in an arc shape, and the second sheet structure 80 is arranged in the shoulder pattern block 21 and is located on the side of the second recess 70 close to the middle pattern portion 30. One end of the second sheet structure 80 extends into the second recess 70, and the other end of the second sheet structure 80 has a third preset distance S1 with the longitudinal groove 10 located on one side of the shoulder pattern portion 20. The third preset distance S1 satisfies: 5mm≤S1≤8mm, and the thickness G2 of the second sheet structure 80 satisfies: 0.6mm≤G2≤1mm. In this way, on the one hand, the above-mentioned arrangement forms a decorative line of the tire tread structure through the second recess 70, so that the tire with the tire tread structure in this embodiment is more beautiful; on the other hand, the second sheet structure 80 can reduce the overall rigidity of the shoulder pattern block 21 while conducting and dissipating the heat in the shoulder pattern block 21, so as to improve the heat dissipation performance of the shoulder pattern block 21, avoid the large amount of friction heat generated during the running of the tire from accumulating in the shoulder pattern block 21 and causing damage to it, thereby extending the service life of the tire.

[0046] Optionally, the middle pattern block 31 is arranged correspondingly to the shoulder pattern block 21, there are at least two middle pattern sections 30, in two adjacent middle pattern sections 30, the middle pattern block 31 of one middle pattern section 30 is arranged correspondingly to the middle pattern block 31 of the other middle pattern section 30, and the middle pattern block 31, the middle pattern block 31 arranged correspondingly to the middle pattern block 31, and the shoulder pattern block 21 form a pattern group 90. There are multiple pattern groups 90, and the multiple pattern groups 90 include a first pattern group, a second pattern group, and a third pattern group, and the length L1 of the first pattern group, the length L2 of the second pattern group, and the length L3 of the third pattern group satisfy: 1.14L1≤L2≤1.24L1, 1.31L1≤L3≤1.39L1. In this way, the above-mentioned setting, on the one hand, enables the tire tread structure to have a variety of patterns with different pitches to reduce the probability of the tire generating resonance, thereby reducing the driving noise of the tire; on the other hand, it makes the values ​​of different pitches more flexible and diverse to adapt to different working conditions and usage requirements, and also improves the processing flexibility of the staff.

[0047] In this embodiment, the length L1 of the first pattern group, the length L2 of the second pattern group, and the length L3 of the third pattern group satisfy: L2=1.19L1, L3=1.35L2.

[0048] Specifically, the lengths of the pitches are designed according to an irrational ratio, which is helpful to reduce the probability of tire resonance. At the same time, the pitches are arranged irregularly along the circumference of the tire (the arrangement is obtained by computer finite element simulation technology) to further reduce the pitch noise caused by pitch resonance and improve the driving comfort of the driver.

[0049] like Figure 1 , Figure 2 and Figure 3 As shown, each longitudinal groove 10 is arranged in a wave shape, and the plurality of longitudinal grooves 10 include a first longitudinal groove 11 and a second longitudinal groove 12. The cross section of the first longitudinal groove 11 is polygonal, and the connection between the groove wall and the groove bottom of the first longitudinal groove 11 has a first chamfer, and the groove wall of the first longitudinal groove 11 and the normal of the first longitudinal groove 11 are arranged at a fourth angle A4, and the fourth angle A4 satisfies: 5°≤A4≤9°, and the depth H1 of the first longitudinal groove 11 satisfies: 6mm≤H1≤10mm. The cross section of the second longitudinal groove 12 is polygonal, and the connection between the groove wall and the groove bottom of the second longitudinal groove 12 has a second chamfer, and the groove wall of the second longitudinal groove 12 and the normal of the second longitudinal groove 12 are arranged at a fifth angle A5, and the fifth angle A5 satisfies: 8°≤A5≤12°, and the depth H2 of the second longitudinal groove 12 satisfies: 6mm≤H2≤10mm. In this way, the wavy longitudinal grooves 10 can, on the one hand, increase the actual ground contact area of ​​the tire tread structure, thereby reducing the distribution concentration of ground contact pressure on the tire tread structure per unit area, thereby improving the tire's anti-wear performance; on the other hand, it can improve the tire tread structure's ability to remove water film, thereby enhancing the tire's drainage performance on slippery roads, thereby improving the tire's straight-line driving stability. At the same time, the above-mentioned arrangement makes the groove wall of the longitudinal groove 10 inclined to reduce the probability of foreign matter being mixed in the longitudinal groove 10, thereby avoiding the phenomenon of foreign matter bumping and scratching the groove wall, which not only improves the tire tread structure's stone removal performance, but also extends the tire tread structure's service life.

[0050] Specifically, although the longitudinal grooves 10 arranged in a wave shape are simple, they can give users an intuitive feeling of toughness and strength, thereby improving the aesthetics of the tire tread structure.

[0051] like Figure 8 As shown, the depth of the first concave portion 60 arranged in multiple stages in the extending direction thereof is gradually changed. Thus, the above arrangement makes the rigidity distribution of the shoulder pattern portion 20 more uniform, thereby reducing the abnormal wear of the shoulder pattern portion 20 during the tire running process, and further prolonging the service life of the tire.

[0052] Optionally, the bottom of the connecting groove 40 is arranged in an arc shape, and the groove wall of the connecting groove 40 is arranged at a sixth angle A6 with the normal of the connecting groove 40, and the sixth angle A6 satisfies: 1°≤A6≤5°, and the depth H3 of the connecting groove 40 satisfies: 4mm≤H3≤8mm; and / or, the bottom wall of the first recess 60 is arranged in an arc shape, and the side wall of the first recess 60 is arranged at a seventh angle A7 with the normal of the first recess 60, and the seventh angle A7 satisfies: 3°≤A7≤7°; and / or, the cross-section of the second recess 70 is polygonal, and the connection between the side wall and the bottom wall of the second recess 70 has a third chamfer, and the depth H5 of the second recess 70 satisfies: 0.5mm≤H5≤1.5mm. In this way, the above-mentioned arrangement makes the inner walls of the connecting groove 40 and the first recess 60 inclined to reduce the probability of foreign matter being mixed in the connecting groove 40 and the first recess 60, thereby avoiding the phenomenon of foreign matter knocking against and scratching the inner wall, which not only improves the stone removal performance of the tire tread structure, but also extends the service life of the tire tread structure; on the other hand, it makes the structural design and parameter values ​​of the connecting groove 40, the first recess 60 and the second recess 70 more flexible and diverse to adapt to different working conditions and usage requirements, and also improves the processing flexibility of the staff.

[0053] Optionally, a fourth chamfer 100 is provided at least at a part of the corners of the middle pattern block 31 away from the tread, and the depth H4 of the fourth chamfer 100 satisfies: 4mm≤H4≤8mm; and / or, in the area T where the tire tread structure contacts the driving surface, the contact area M2 between the area T and the driving surface and the area M1 of the area T satisfy: 0.7M1≤M2≤0.73M1; and / or, the width W1 of the connecting groove 40 satisfies: 3mm≤W1≤4mm. In this way, the above-mentioned setting of the fourth chamfer 100 can reduce the abnormal wear caused by the collision with the road surface during the driving process of the tire, thereby extending the service life of the tire. At the same time, the above-mentioned setting of the contact area M2 ensures that there is a large contact area between the tire tread structure and the driving surface, thereby reducing the concentration of the ground pressure distribution on the tire tread structure per unit area, thereby improving the anti-wear performance of the tire. At the same time, the above-mentioned arrangement of the connecting groove 40 makes the connecting groove 40 a thin groove, so as to reduce the collision noise between the tire tread structure and the running surface, thereby reducing the running noise of the tire.

[0054] In this embodiment, the tire tread structure adopts a circumferentially continuous middle pattern block 31 and shoulder pattern block 21 design to increase the overall rigidity and ground contact rate of the pattern blocks in the area T where the tire tread structure contacts the driving surface, thereby increasing the wear resistance of the tire tread structure and extending the service life of the tire tread structure.

[0055] The present application also provides a tire (not shown), which includes the tire tread structure described above.

[0056] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0057] The tire tread structure has a plurality of longitudinal grooves, each of which extends along the circumference of the tire. The plurality of longitudinal grooves are arranged at intervals along the width direction of the tire to separate the tread into two shoulder pattern portions and an intermediate pattern portion located between the two shoulder pattern portions. A connecting groove is arranged on the intermediate pattern portion, and the connecting groove is used to connect the longitudinal grooves located on both sides of the intermediate pattern portion. There are a plurality of connecting grooves, and the plurality of connecting grooves are arranged at intervals along the circumference of the tire to separate the intermediate pattern portion into a plurality of intermediate pattern blocks. The first sheet-like structure is arranged in the intermediate pattern block, and the first sheet-like structure includes at least two interconnected sub-sheet-like structures, and the adjacent two sub-sheet-like structures are arranged at a first angle A1, and the first angle A1 satisfies: 45°<A1<135°. There are at least two first sheet-like structures arranged in each intermediate pattern block, and at least two first sheet-like structures are arranged at intervals along the circumference of the tire. In this way, the middle pattern block is the part that mainly contacts the running surface during the running of the tire. The above arrangement of the first sheet structure in the middle pattern block can reduce the impact noise between the tire tread structure and the running surface, thereby reducing the running noise of the tire, solving the problem of high running noise of tires of light and heavy-duty vehicles in the prior art. At the same time, multiple middle pattern blocks arranged at intervals along the circumference of the tire can improve the uniformity of the rigidity distribution of the tire tread structure, thereby avoiding the phenomenon of local wear, extending the service life of the tire, and improving the rolling resistance performance of the tire.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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 so as to separate the tread into two shoulder pattern portions (20) and an intermediate pattern portion (30) located between the two shoulder pattern portions (20); A connecting groove (40) is arranged on the middle tread portion (30), the connecting groove (40) is used to connect the longitudinal grooves (10) located on both sides of the middle tread portion (30), and the connecting groove (40) is multiple, and the multiple connecting grooves (40) are arranged at intervals along the circumference of the tire to separate the middle tread portion (30) into a plurality of middle tread blocks (31); A first lamellar structure (50) is arranged in the middle pattern block (31), the first lamellar structure (50) comprising at least two interconnected sub-lamellar structures, two adjacent sub-lamellar structures being arranged at a first angle A1, the first angle A1 satisfying: 45°<A1<135°; There are at least two first sheet-like structures (50) arranged in each of the middle pattern blocks (31), and at least two of the first sheet-like structures (50) are arranged at intervals along the circumferential direction of the tire.

2. The tire tread structure according to claim 1, characterized in that: In two adjacent first sheet-like structures (50), At least one of the sub-lamellar structures of one of the first lamellar structures (50) extends into a longitudinal groove (10) located on one side of the middle pattern block (31), and at least one of the sub-lamellar structures of another of the first lamellar structures (50) extends into a longitudinal groove (10) located on the other side of the middle pattern block (31); The two sub-sheet structures extending into the longitudinal groove (10) surround a preset area, and the remaining sub-sheet structures of the first sheet structure (50) are located in the preset area; at least part of the first sheet structure (50) is made of hard material.

3. The tire tread structure according to claim 2, characterized in that: The at least two sub-sheet structures include a first sub-sheet structure (51) and a second sub-sheet structure (52), wherein one end of the first sub-sheet structure (51) away from the second sub-sheet structure (52) extends into the longitudinal groove (10) located on one side of the middle pattern block (31), and the second sub-sheet structure (52) is located in the preset area; There is a first preset distance between one end of the second sub-lamellar structure (52) away from the first lamellar structure (50) and the longitudinal groove (10) located on the other side of the middle pattern block (31); The thickness G1 of the first sheet-like structure (50) satisfies: 0.6 mm ≤ G1 ≤ 1 mm, the first sub-sheet-like structure (51) is arranged at a second angle A2 with respect to the width direction of the tire, the second angle A2 satisfies: 30° ≤ A2 ≤ 45°, and the length B1 of the first sub-sheet-like structure (51) and the width W1 of the middle pattern block (31) satisfy: B1 ≥ 2 / 3 W1.

4. The tire tread structure according to claim 1, characterized in that: The tire tread structure further comprises: A first recess (60) is arranged on the shoulder pattern portion (20), the first recess (60) comprising a first sub-recess (61) and a second sub-recess (62) which are connected to each other, one end of the first sub-recess (61) away from the second sub-recess (62) extends to a side surface of the shoulder pattern portion (20) away from the middle pattern portion (30), and a second preset distance exists between one end of the second sub-recess (62) away from the first sub-recess (61) and a side surface of the shoulder pattern portion (20) close to the middle pattern portion (30); The extension direction of the first sub-recess (61) and the extension direction of the second sub-recess (62) are arranged at a third angle A3, and the third angle A3 satisfies: 130°≤A3≤140°.

5. The tire tread structure according to claim 4, characterized in that: There are a plurality of first recesses (60), wherein the plurality of The first recesses (60) are arranged at intervals along the circumferential direction of the tire to separate the shoulder pattern portion (20) into a plurality of shoulder pattern blocks (21), and the tire tread structure further comprises: A second recess (70) is provided on the shoulder pattern block (21), and the second recess (70) extends along the circumference of the tire; The second sheet-like structure (80) is arranged in an arc shape. The second sheet-like structure (80) is arranged in the shoulder tread block (21) and is located on the side of the second recess (70) close to the middle tread portion (30). One end of the second sheet-like structure (80) extends into the second recess (70). A third preset distance S1 is provided between the other end of the second sheet-like structure (80) and the longitudinal groove (10) located on one side of the shoulder tread portion (20). The third preset distance S1 satisfies: 5 mm ≤ S1 ≤ 8 mm. The thickness G2 of the second sheet-like structure (80) satisfies: 0.6 mm ≤ G2 ≤ ​​1 mm.

6. The tire tread structure according to claim 5, characterized in that: The intermediate pattern block (31) is arranged correspondingly to the shoulder pattern block (21); there are at least two intermediate pattern sections (30); in two adjacent intermediate pattern sections (30), the intermediate pattern block (31) of one intermediate pattern section (30) is arranged correspondingly to the intermediate pattern block (31) of the other intermediate pattern section (30); the intermediate pattern block (31), the intermediate pattern block (31) arranged correspondingly to the intermediate pattern block (31), and the shoulder pattern block (21) form a pattern group (90); There are multiple pattern groups (90), and the multiple pattern groups (90) include a first pattern group, a second pattern group, and a third pattern group. The length L1 of the first pattern group, the length L2 of the second pattern group, and the length L3 of the third pattern group satisfy the following conditions: 1.14L1≤L2≤1.24L1, 1.31L1≤L3≤1.39L1.

7. The tire tread structure according to claim 1, characterized in that: Each of the longitudinal grooves (10) is arranged in a wave shape, and the plurality of longitudinal grooves (10) include a first longitudinal groove (11) and a second longitudinal groove (12). The cross section of the first longitudinal groove (11) is polygonal, the connection between the groove wall and the groove bottom of the first longitudinal groove (11) has a first chamfer, the groove wall of the first longitudinal groove (11) and the normal of the first longitudinal groove (11) are arranged at a fourth angle A4, the fourth angle A4 satisfies: 5°≤A4≤9°, and the depth H1 of the first longitudinal groove (11) satisfies: 6mm≤H1≤10mm; The cross section of the second longitudinal groove (12) is polygonal, the connection between the groove wall and the groove bottom of the second longitudinal groove (12) has a second chamfer, the groove wall of the second longitudinal groove (12) and the normal of the second longitudinal groove (12) are arranged at a fifth angle A5, the fifth angle A5 satisfies: 8°≤A5≤12°, and the depth H2 of the second longitudinal groove (12) satisfies: 6mm≤H2≤10mm.

8. The tire tread structure according to claim 5, characterized in that: The bottom of the connecting groove (40) is arranged in an arc shape, the groove wall of the connecting groove (40) and the normal of the connecting groove (40) are arranged at a sixth angle A6, the sixth angle A6 satisfies: 1°≤A6≤5°, the depth H3 of the connecting groove (40) satisfies: 4mm≤H3≤8mm; and / or, The bottom wall of the first recess (60) is arranged in an arc shape, and a seventh angle A7 is formed between the side wall of the first recess (60) and the normal line of the first recess (60), and the seventh angle A7 satisfies: 3°≤A7≤7°; and / or, The cross section of the second recess (70) is polygonal, the connection between the side wall and the bottom wall of the second recess (70) has a third chamfer, and the depth H5 of the second recess (70) satisfies: 0.5 mm ≤ H5 ≤ 1.5 mm.

9. The tire tread structure according to claim 1, characterized in that: The middle pattern block (31) is provided with a fourth chamfer (100) at at least a portion of the corner away from the tread, and the depth H4 of the fourth chamfer (100) satisfies: 4mm≤H4≤8mm; and / or, In the area T where the tire tread structure contacts the running surface, the contact area M2 between the area T and the running surface and the area M1 of the area T satisfy: 0.7M1≤M2≤0.73M1; and / or, The width W1 of the connecting groove (40) satisfies: 3mm≤W1≤4mm.

10. A tire, characterized in that: The tire comprises the tire tread structure according to any one of claims 1 to 9.

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