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, the longitudinal grooves extend in the circumferential direction of a tire, and the longitudinal grooves are formed in the width direction of the tire at intervals so that a tire tread can be divided into tire shoulder pattern parts and a plurality of middle pattern parts located between the two tire shoulder pattern parts; wherein the contact part of the tire and the driving surface has the width T and the area S1, and the width W1 of the longitudinal groove and the width T meet the condition that W1 is larger than or equal to 0.045 T and smaller than or equal to 0.075 T; the width W2 of the tire shoulder pattern part, the width W3 of the middle pattern part and the width T meet the following conditions: 0.165 T < = W2 < = 0.195 T, and 0.115 T < = W3 < = 0.145 T; the area S2 and the area S1 of the tire tread structure meet the condition that S1 is more than or equal to 0.67 S2 and less than or equal to 0.73 S2. According to the utility model, the problem that the dry and wet land control performance of the radial tire of the car in the prior art is poor 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, tires are one of the core safety components of automobiles. The buffer system composed of tires and the suspension of automobiles can buffer the impact of vehicles when driving, thereby ensuring that the car has high riding comfort and driving stability. As the only part of the car that directly contacts the ground, the various performances of tires have a direct impact on the driving process of the car, especially the dry and wet handling performance of tires (i.e. the straight-line driving ability of tires on dry ground and the drainage and anti-humidification ability of tires on wet ground). If the dry and wet handling performance of tires is poor, the car will easily slip, seriously affecting the driving safety of the driver.

[0003] In the prior art, when designing tire tread pattern structures for wet and dry handling performance, the staff often designs based on the actual size of the tire and each structure. However, during the actual rolling process of the tire, its tread cannot completely contact the driving surface, and will also produce a certain elastic deformation, which leads to a large deviation between the technical effects expected by each structural design and the actual effects, and the improvement of the wet and dry handling performance of the tire is often unsatisfactory. 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 poor dry and wet handling performance of radial tires for passenger cars 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 a shoulder pattern portion and a plurality of intermediate pattern portions located between the two shoulder pattern portions; wherein the contact portion of the tire with the running surface has a width T and an area S1, and the width W1 of the longitudinal groove satisfies the following relation to the width T: 0.045T≤W1≤0.075T; the width W2 of the shoulder pattern portion, the width W3 of the intermediate pattern portion and the width T satisfy the following relation: 0.165T≤W2≤0.195T, 0.115T≤W3≤0.145T; the area S2 of the tire tread structure satisfies the following relation to the area S1: 0.67S2≤S1≤0.73S2.

[0006] Furthermore, the plurality of longitudinal grooves include: a first longitudinal groove, adjacent to the shoulder pattern portion, the width W11 of the first longitudinal groove and the width T satisfying: 0.045T≤W11≤0.065T; a second longitudinal groove, located between two adjacent middle pattern portions, the width W12 of the second longitudinal groove and the width T satisfying: 0.055T≤W12≤0.075T; wherein, the width W11 and the width W12 satisfying: 1.15W11≤W12≤1.19W11.

[0007] Furthermore, the multiple intermediate pattern portions include: a center pattern portion, which coincides with at least a portion of the center plane S of the tire, and the width W31 of the center pattern portion and the width W2 of the shoulder pattern portion satisfy: 1.36W31≤W2≤1.40W31; a crown pattern portion, which is located between the shoulder pattern portion and the center pattern portion, and the width W32 of the shoulder pattern portion and the width W2 of the shoulder pattern portion satisfy: 1.36W32≤W2≤1.40W32.

[0008] Furthermore, the tire tread structure also includes: a connecting groove, which is arranged on the shoulder pattern portion, and the inner side and / or outer side of the tire is connected to the longitudinal groove adjacent to the shoulder pattern portion through the connecting groove, and the extension direction of the connecting groove is set at a first angle A1 with the width direction of the tire, and the first angle A1 satisfies: 6°≤A1≤8°; wherein, there are multiple connecting grooves, and the multiple connecting grooves are arranged at intervals along the circumference of the tire to separate the shoulder pattern portion into multiple shoulder pattern blocks, and a first sheet structure is arranged on at least one shoulder pattern block.

[0009] Furthermore, the tire tread structure also includes: a second sheet-like structure, which is arranged in the crown pattern portion, and both ends of the second sheet-like structure respectively extend into two longitudinal grooves adjacent to the crown pattern portion, and the extension direction of the second sheet-like structure is set at a second angle A2 with the width direction of the tire, and the second angle A2 satisfies: 45°≤A2≤55°; wherein, there are multiple second sheet-like structures, and the multiple second sheet-like structures are arranged at intervals along the circumference of the tire to separate the crown pattern portion into multiple crown pattern blocks; a third sheet-like structure, which is arranged in the crown pattern block, and in the two longitudinal grooves adjacent to the crown pattern block, one end of the third sheet-like structure extends into one longitudinal groove, and the other end of the third sheet-like structure has a preset distance from the other longitudinal groove.

[0010] Furthermore, the tire tread structure also includes: a fourth sheet structure, which is arranged in the central pattern portion, and both ends of the fourth sheet structure respectively extend into two longitudinal grooves adjacent to the central pattern portion, and there are multiple fourth sheet structures, and the multiple fourth sheet structures are arranged at intervals along the circumference of the tire to separate the central pattern portion into multiple central pattern blocks; a fifth sheet structure, which is arranged in the central pattern block, and in the two longitudinal grooves adjacent to the central pattern block, one end of the fifth sheet structure extends into one longitudinal groove, and the other end of the fifth sheet structure has a preset distance from the other longitudinal groove; wherein, in two adjacent central pattern blocks, the fifth sheet structure arranged in each central pattern block respectively extends into different longitudinal grooves.

[0011] Furthermore, multiple shoulder pattern blocks are arranged in one-to-one correspondence with multiple crown pattern blocks, and multiple shoulder pattern blocks are arranged in one-to-one correspondence with multiple center pattern blocks, and the shoulder pattern blocks and the corresponding crown pattern blocks and center pattern blocks form a sub-pattern group; wherein, in two adjacent sub-pattern groups, the length P1 of one sub-pattern group and the length P2 of the other sub-pattern group satisfy: P1≠P2.

[0012] Furthermore, the tire tread structure also includes N pattern groups, each pattern group includes at least two adjacent sub-pattern groups, the N pattern groups include a first pattern group, a second pattern group, a third pattern group, a fourth pattern group and a fifth pattern group, and the length L1 of the first pattern group, the length L2 of the second pattern group, the length L3 of the third pattern group, the length L4 of the fourth pattern group and the length L5 of the fifth pattern group satisfy: 1.0L1≤L2≤1.2L1, 1.1L1≤L3≤1.3L1, 1.23L1≤L4≤1.43L1, 1.36L1≤L5≤1.56L1; N satisfies: 62≤N≤78, and N is an even number.

[0013] Further, at least part of the edges of the shoulder pattern block are provided with a first chamfer; and / or, at least one edge of the crown pattern block is provided with a second chamfer; and / or, at least one edge of the center pattern portion is provided with a third chamfer; and / or, the groove bottom of the connecting groove is an arc-shaped surface, and the groove wall of the connecting groove and the normal of the connecting groove are arranged at a third angle A3, and the third angle A3 satisfies: 3°≤A3≤7°; and / or, the connection between the groove wall and the groove bottom of the second longitudinal groove is provided with a fourth chamfer, and the groove bottom of the second longitudinal groove is provided with a fourth chamfer. A fourth angle A4 is set between the groove wall and the normal of the second longitudinal groove, and the fourth angle A4 satisfies: 6°≤A4≤10°; a fifth chamfer is set at the connection between the groove wall and the groove bottom of the first longitudinal groove, and a fifth angle A5 is set between one groove wall of the first longitudinal groove and the normal of the first longitudinal groove, and the fifth angle A5 satisfies: 8°≤A5≤12°; a sixth angle A6 is set between the other groove wall of the first longitudinal groove and the normal of the first longitudinal groove, and the sixth angle A6 satisfies: 10°≤A6≤14°.

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

[0015] By applying the technical solution of the utility model, 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 a shoulder pattern portion and multiple intermediate pattern portions located between the two shoulder pattern portions. Among them, the contact portion between the tire and the driving surface has a width T and an area S1, and the width W1 of the longitudinal grooves and the width T satisfy: 0.045T≤W1≤0.075T; the width W2 of the shoulder pattern portion, the width W3 of the intermediate pattern portion and the width T satisfy: 0.165T≤W2≤0.195T, 0.115T≤W3≤0.145T; the area S2 of the tire tread structure and the area S1 satisfy: 0.67S2≤S1≤0.73S2. In this way, the width ratio of the longitudinal grooves can ensure that the longitudinal grooves have a sufficiently large drainage capacity to avoid a large amount of water accumulating between the tread and the running surface and forming a water film when the tire is running on a wet road, which causes the tire to slip easily, thereby improving the wet handling performance of the tire; and the width ratio of the shoulder pattern portion and the middle pattern portion and the pattern contact ratio can ensure that there is a sufficiently large contact area between the tire pattern structure and the tread to increase the driving force of the tire, while making the contact area of ​​the middle pattern portion larger, thereby improving the straight-line driving ability of the tire on a dry road. At the same time, the width ratio of the longitudinal grooves, the shoulder pattern portion and the middle pattern portion are all designed based on the actual contact part size of the tire and the running surface, thereby ensuring that the functional effect of each structure can be closer to the actual effect, thereby solving the problem of poor dry and wet handling performance of radial tires for passenger cars in the prior art and improving the driving safety of drivers. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0018] Figure 2 Shows Figure 1 A partial front view of a pattern group of a tire tread structure;

[0019] Figure 3 Shows Figure 2 Schematic cross-sectional view at CC in FIG.

[0020] Figure 4 Shows Figure 2 Schematic diagram of the cross section at DD in FIG.

[0021] Figure 5 Shows Figure 1 A cross-sectional view of a communicating groove of a tire tread structure;

[0022] Figure 6 Shows Figure 1 A cross-sectional view of a second sheet structure of a tire tread structure;

[0023] Figure 7 Shows Figure 1 A front view of a second sheet structure of a tire tread structure.

[0024] The above drawings include the following reference numerals:

[0025] 10. Longitudinal groove; 11. First longitudinal groove; 12. Second longitudinal groove; 20. Shoulder pattern portion; 21. Shoulder pattern block; 30. Center pattern portion; 31. Center pattern block; 40. Crown pattern portion; 41. Crown pattern block; 50. Connecting groove; 60. First sheet structure; 70. Second sheet structure; 80. Third sheet structure; 90. Fourth sheet structure; 100. Fifth sheet structure; 110. Pattern group; 111. Sub-pattern group; 120. First chamfer; 130. Second chamfer; 140. Third chamfer; 150. Fourth chamfer; 160. Fifth chamfer; 170. Decorative groove. DETAILED DESCRIPTION

[0026] 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.

[0027] 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.

[0028] 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.

[0029] In order to solve the problem of poor dry and wet handling performance of radial tires for passenger cars in the prior art, the present application provides a tire tread structure and a tire having the same.

[0030] like Figures 1 to 7 As shown, the tire tread structure includes a plurality of longitudinal grooves 10, each of which extends along the circumference of the tire, and the plurality of longitudinal grooves 10 are arranged at intervals along the width direction of the tire to separate the tread into a shoulder pattern portion 20 and a plurality of intermediate pattern portions located between two shoulder pattern portions 20. The contact portion between the tire and the running surface has a width T and an area S1, and the width W1 of the longitudinal groove 10 and the width T satisfy: 0.045T≤W1≤0.075T; the width W2 of the shoulder pattern portion 20, the width W3 of the intermediate pattern portion and the width T satisfy: 0.165T≤W2≤0.195T, 0.115T≤W3≤0.145T; the area S2 of the tire tread structure and the area S1 satisfy: 0.67S2≤S1≤0.73S2.

[0031] By applying the technical solution of this embodiment, the plurality of longitudinal grooves 10 of the tire tread structure all 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 separate the tread into a shoulder pattern portion 20 and a plurality of intermediate pattern portions located between the two shoulder pattern portions. The contact portion between the tire and the driving surface has a width T and an area S1, and the width W1 of the longitudinal groove 10 satisfies the following conditions with respect to the width T: 0.045T≤W1≤0.075T; the width W2 of the shoulder pattern portion 20, the width W3 of the intermediate pattern portion, and the width T: 0.165T≤W2≤0.195T, 0.115T≤W3≤0.145T. The area S2 of the tire tread structure satisfies the following conditions with respect to the area S1: 0.67S2≤S1≤0.73S2. In this way, the width ratio of the longitudinal groove 10 can ensure that the longitudinal groove 10 has a sufficiently large drainage capacity to avoid a large amount of water accumulating between the tread and the running surface and forming a water film when the tire is running on a wet road, which causes the tire to slip easily, thereby improving the wet handling performance of the tire; and the width ratio of the shoulder pattern portion 20 and the middle pattern portion and the pattern ground contact rate can ensure that there is a sufficiently large contact area between the tire pattern structure and the tread to increase the driving force of the tire, while making the ground contact area of ​​the middle pattern portion larger, thereby improving the straight-line driving ability of the tire on a dry road. At the same time, the width ratio of the longitudinal groove 10, the shoulder pattern portion 20 and the middle pattern portion are all designed based on the actual contact part size of the tire and the running surface, thereby ensuring that the functional effect of each structure can be closer to the actual effect, thereby solving the problem of poor dry and wet handling performance of radial tires for passenger cars in the prior art and improving the driving safety of drivers.

[0032] Specifically, the width ratio setting of the shoulder pattern portion 20 and the middle pattern portion can also improve the small-angle steering responsiveness of the tire, thereby improving the dry braking performance of the tire.

[0033] Specifically, the width setting of the longitudinal groove 10 and the proportional relationship between the area S2 of the tire tread structure and the area S1 of the contact part between the tire and the driving surface can not only improve the wear resistance of the tire, thereby extending the service life of the tire, but also balance the dry braking performance and wet anti-skid performance of the tire, thereby improving the dry and wet handling performance of the tire.

[0034] In this embodiment, the width W2 of the shoulder pattern portion 20 satisfies the width T: W2 = 0.18T.

[0035] Optionally, the plurality of longitudinal grooves 10 include a first longitudinal groove 11 and a second longitudinal groove 12, the first longitudinal groove 11 is adjacent to the shoulder pattern portion 20, and the width W11 of the first longitudinal groove 11 satisfies the following relationship with the width T: 0.045T≤W11≤0.065T. The second longitudinal groove 12 is located between two adjacent middle pattern portions, and the width W12 of the second longitudinal groove 12 satisfies the following relationship with the width T: 0.055T≤W12≤0.075T. Among them, the width W11 satisfies the following relationship with the width W12: 1.15W11≤W12≤1.19W11. In this way, the above-mentioned setting method enables the width value of the longitudinal groove 10 to be further adjusted according to the different setting positions thereof, thereby making a more reasonable allocation of the proportional relationship between the width W1 of the longitudinal groove 10 and the width T, so as to further improve the drainage capacity of the tire. At the same time, the above settings can also make the ratio selection between width W11 and width T, width W12 and width T, and width W11 and width W12 more flexible and diverse to adapt to different working conditions and usage requirements, and also improve the processing flexibility of the staff.

[0036] In this embodiment, the width W11 of the first longitudinal groove 11 satisfies the width T: W11 = 0.055T.

[0037] In this embodiment, the width W12 of the second longitudinal groove 12 satisfies the width T: W12 = 0.065T.

[0038] Optionally, the plurality of intermediate tread portions include a central tread portion 30 and a crown tread portion 40, the central tread portion 30 coincides with at least a portion of the center plane S of the tire, and the width W31 of the central tread portion 30 and the width W2 of the shoulder tread portion 20 satisfy: 1.36W31≤W2≤1.40W31. The crown tread portion 40 is located between the shoulder tread portion 20 and the central tread portion 30, and the width W32 of the crown tread portion 40 and the width W2 of the shoulder tread portion 20 satisfy: 1.36W32≤W2≤1.40W32. In this way, the above arrangement further adjusts the width W3 of the intermediate tread portion, so that the width values ​​of the central tread portion 30 and the crown tread portion 40 can be reasonably adjusted according to their arrangement positions, which not only further improves the straight-line driving stability of the tire, but also further improves the small-angle steering responsiveness of the tire, thereby improving the dry braking performance of the tire. At the same time, the above settings can also make the selection of the ratios among the width W31, the width W2 and the width W32 more flexible and diverse to adapt to different working conditions and usage requirements, and also enhance the processing flexibility of the staff.

[0039] In this embodiment, the width W31 of the center tread portion 30 and the width W2 of the shoulder tread portion 20 satisfy: W2=1.38W31.

[0040] In this embodiment, the width W32 of the crown pattern portion 40 and the width W2 of the shoulder pattern portion 20 satisfy: W2=1.38W32.

[0041] In this embodiment, the width W31 of the center tread portion 30 , the width W32 of the crown tread portion 40 , and the width T satisfy: W31 = 0.13T, W32 = 0.13T.

[0042] In this embodiment, the central pattern portion 30 is symmetrically arranged with respect to the central plane S.

[0043] Optionally, the tire tread structure further includes a connecting groove 50, which is arranged on the shoulder pattern portion 20, and the inner side and / or outer side of the tire is connected to the longitudinal groove 10 adjacent to the shoulder pattern portion 20 through the connecting groove 50, and the extending direction of the connecting groove 50 is arranged at a first angle A1 with the width direction of the tire, and the first angle A1 satisfies: 6°≤A1≤8°. Among them, there are multiple connecting grooves 50, and the multiple connecting grooves 50 are arranged at intervals along the circumference of the tire to separate the shoulder pattern portion 20 into multiple shoulder pattern blocks 21, and at least one shoulder pattern block 21 is provided with a first sheet structure 60. In this way, the above-mentioned arrangement of the connecting groove 50 can discharge the liquid in the longitudinal groove 10 to the outside of the tire, while increasing the discharge efficiency of the liquid, thereby improving the drainage capacity of the tire. At the same time, the first sheet structure 60 can cut the complete water film between the shoulder pattern block 21 and the running surface, further improving the anti-slip performance (wet handling) of the tire.

[0044] In this embodiment, each shoulder pattern block 21 is provided with a first sheet structure 60 .

[0045] In this embodiment, each shoulder pattern block 21 is further provided with a decorative groove 170 to enhance the overall aesthetics of the tire.

[0046] In this embodiment, the first angle A1 is 7°.

[0047] Optionally, the tire tread structure further includes a second sheet structure 70 and a third sheet structure 80, wherein the second sheet structure 70 is arranged in the crown pattern portion 40, and the two ends of the second sheet structure 70 extend into two longitudinal grooves 10 adjacent to the crown pattern portion 40, respectively, and the extension direction of the second sheet structure 70 forms a second angle A2 with the width direction of the tire, and the second angle A2 satisfies: 45°≤A2≤55°. There are multiple second sheet structures 70, and the multiple second sheet structures 70 are arranged at intervals along the circumference of the tire to separate the crown pattern portion 40 into multiple crown pattern blocks 41. The third sheet structure 80 is arranged in the crown pattern block 41, and in the two longitudinal grooves 10 adjacent to the crown pattern block 41, one end of the third sheet structure 80 extends into one longitudinal groove 10, and the other end of the third sheet structure 80 has a preset distance from the other longitudinal groove 10. In this way, the above arrangement of the second sheet structure 70 can improve the ability of the crown pattern portion 40 to cut through the water film, thereby improving the anti-skid performance of the tire; on the other hand, the liquid in the longitudinal groove 10 can flow along the second sheet structure 70 to the adjacent longitudinal groove 10 to improve the drainage performance of the tire. At the same time, the third sheet structure 80 can balance the rigidity of the crown pattern block 41 to improve the dry running ability of the tire.

[0048] In this embodiment, the extension direction of the second sheet-like structure 70 and the extension direction of the third sheet-like structure 80 are parallel to each other, so as to enhance the overall aesthetics of the tire tread structure.

[0049] like Figure 5 and Figure 6 As shown, the second sheet structure 70 is a double-bulge arrangement. In this way, the double-bulge arrangement can, on the one hand, suppress the deformation of the crown pattern block 41 during the rolling process of the tire, increase the rigidity of the crown pattern block 41, and further improve the dry handling performance of the tire; on the other hand, it can reduce the tangential vibration of the crown pattern block 41, reduce the rolling noise of the tire, and thus reduce the driving noise of the tire.

[0050] Optionally, the tire tread structure further includes a fourth sheet structure 90 and a fifth sheet structure 100, wherein the fourth sheet structure 90 is arranged in the central pattern portion 30, and the two ends of the fourth sheet structure 90 respectively extend into two longitudinal grooves 10 adjacent to the central pattern portion 30, and there are multiple fourth sheet structures 90, and the multiple fourth sheet structures 90 are arranged at intervals along the circumference of the tire to separate the central pattern portion 30 into multiple central pattern blocks 31. The fifth sheet structure 100 is arranged in the central pattern block 31, and in the two longitudinal grooves 10 adjacent to the central pattern block 31, one end of the fifth sheet structure 100 extends into one longitudinal groove 10, and the other end of the fifth sheet structure 100 has a preset distance from the other longitudinal groove 10. Among them, in two adjacent central pattern blocks 31, the fifth sheet structure 100 arranged in each central pattern block 31 extends into different longitudinal grooves 10 respectively. In this way, the fourth sheet structure 90 can improve the ability of the central tread portion 30 to cut through the water film, thereby improving the anti-skid performance of the tire; on the other hand, the liquid in the longitudinal groove 10 can flow along the fourth sheet structure 90 to the adjacent longitudinal groove 10 to improve the drainage performance of the tire. At the same time, the fifth sheet structure 100 can balance the rigidity of the central tread block 31 to improve the dry running ability of the tire.

[0051] Optionally, a plurality of shoulder pattern blocks 21 are arranged in one-to-one correspondence with a plurality of crown pattern blocks 41, and a plurality of shoulder pattern blocks 21 are arranged in one-to-one correspondence with a plurality of center pattern blocks 31, and the shoulder pattern blocks 21 and the corresponding crown pattern blocks 41 and center pattern blocks 31 form a sub-pattern group 111. Among them, in two adjacent sub-pattern groups 111, the length P1 of one sub-pattern group 111 and the length P2 of another sub-pattern group 111 satisfy: P1≠P2. In this way, since the lengths of the two adjacent sub-pattern groups 111 are inconsistent, the frequency of the pattern cavity noise can be effectively disrupted, thereby reducing the peak value of the tire's running noise and improving the driving comfort of the driver.

[0052] Optionally, the tire tread structure further includes N pattern groups 110, each pattern group 110 includes at least two adjacent sub-pattern groups 111, the N pattern groups 110 include a first pattern group 110, a second pattern group 110, a third pattern group 110, a fourth pattern group 110 and a fifth pattern group 110, and the length L1 of the first pattern group 110, the length L2 of the second pattern group 110, the length L3 of the third pattern group 110, the length L4 of the fourth pattern group 110 and the length L5 of the fifth pattern group 110 satisfy: 1.0L1≤L2≤1.2L1, 1.1L1≤L3≤1.3L1, 1.23L1≤L4≤1.43L1, 1.36L1≤L5≤1.56L1. N satisfies: 62≤N≤78, and N is an even number. In this way, five pattern groups 110 of different lengths are arranged along the circumference of the tire, and each pattern group 110 includes at least two sub-pattern groups 111 of different lengths, making the overall structure of the tire pattern structure more chaotic, which can disperse the noise spectrum, even out the noise energy, further disrupt the frequency of the pattern cavity noise, and reduce the noise of the tire during driving. At the same time, the number (N) of the pattern groups 110 can minimize the resonance phenomenon between the tire pattern structures and better reduce the driving noise of the tire.

[0053] In this embodiment, the length L of each pattern group 110 is the tire pitch of the pattern group 110 .

[0054] In this embodiment, each pattern group 110 includes two adjacent sub-pattern groups 111 .

[0055] Specifically, since the lengths of two adjacent sub-pattern groups 111 are inconsistent, in the multiple pattern groups 110, the sub-pattern group 111 with a length of P1 and the sub-pattern group 111 with a length of P2 are actually arranged crosswise to further disrupt the frequency of the pattern cavity noise and reduce the peak value of the tire's driving noise.

[0056] In this embodiment, the specific arrangement of the five pattern groups 110 is confirmed after finite element simulation optimization, and the ratio between the pitches of the species is an irrational number.

[0057] In this embodiment, the width W4 of the connecting groove 50 and the length L of the pattern group 110 where the connecting groove 50 is located satisfy: 0.11L≤W4≤0.12L. In this way, the above arrangement can further improve the drainage capacity of the tire.

[0058] Optionally, a first chamfer 120 is provided at at least part of the edges of the shoulder pattern block 21; and / or, a second chamfer 130 is provided at at least one edge of the crown pattern block 41; and / or, a third chamfer 140 is provided at at least one edge of the center pattern portion 30; and / or, the groove bottom of the connecting groove 50 is an arcuate surface, and a third angle A3 is formed between the groove wall of the connecting groove 50 and the normal of the connecting groove 50, and the third angle A3 satisfies: 3°≤A3≤7°; and / or, a fourth chamfer 150 is provided at the connection between the groove wall and the groove bottom of the second longitudinal groove 12, and the second longitudinal groove 12 is provided with a third chamfer 150. A fourth angle A4 is set between the groove wall of the second longitudinal groove 12 and the normal of the second longitudinal groove 12, and the fourth angle A4 satisfies: 6°≤A4≤10°; a fifth chamfer 160 is set at the connection between the groove wall and the groove bottom of the first longitudinal groove 11, and a fifth angle A5 is set between one groove wall of the first longitudinal groove 11 and the normal of the first longitudinal groove 11, and the fifth angle A5 satisfies: 8°≤A5≤12°; a sixth angle A6 is set between another groove wall of the first longitudinal groove 11 and the normal of the first longitudinal groove 11, and the sixth angle A6 satisfies: 10°≤A6≤14°. The above-mentioned settings of the first chamfer 120, the second chamfer 130 and the third chamfer 140 reduce the damage to the tire tread structure caused by uneven roads, thereby reducing the risk of collapse of each pattern block of the tire tread structure, thereby extending the service life of the tire. At the same time, the groove wall arrangement of the connecting groove 50 can facilitate the discharge of foreign matter in the connecting groove 50, thereby extending the service life of the tire. At the same time, the groove wall arrangement of the first longitudinal groove 11 and the second longitudinal groove 12 can avoid stress concentration when there is a foreign matter load in the two grooves, thereby reducing the risk of groove cracking in the two grooves, further extending the service life of the tire.

[0059] In this embodiment, the third chamfer 140 is an arc-shaped cut angle, and the third chamfer 140 is provided at the two corners where the central pattern block 31 contacts the fourth sheet structure 90, so that the two third chamfers 140 are centrally symmetrical with each other, thereby improving the aesthetics of the tire tread structure.

[0060] In this embodiment, the tire tread structure is centrally symmetric about the center plane S of the tire, that is, after the tire tread structure on any one side of the center plane S is rotated 180°, it can overlap with the tire tread structure on the other side.

[0061] The present application also provides a tire (not shown), which includes the tire tread structure described above.

[0062] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0063] 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 a shoulder pattern portion and a plurality of intermediate pattern portions located between the two shoulder pattern portions. The contact portion between the tire and the driving surface has a width T and an area S1, and the width W1 of the longitudinal grooves and the width T satisfy: 0.045T≤W1≤0.075T; the width W2 of the shoulder pattern portion, the width W3 of the intermediate pattern portion and the width T satisfy: 0.165T≤W2≤0.195T, 0.115T≤W3≤0.145T; the area S2 of the tire tread structure and the area S1 satisfy: 0.67S2≤S1≤0.73S2. In this way, the width ratio of the longitudinal grooves can ensure that the longitudinal grooves have a sufficiently large drainage capacity to avoid a large amount of water accumulating between the tread and the running surface and forming a water film when the tire is running on a wet road, which causes the tire to slip easily, thereby improving the wet handling performance of the tire; and the width ratio of the shoulder pattern portion and the middle pattern portion and the pattern contact ratio can ensure that there is a sufficiently large contact area between the tire pattern structure and the tread to increase the driving force of the tire, while making the contact area of ​​the middle pattern portion larger, thereby improving the straight-line driving ability of the tire on a dry road. At the same time, the width ratio of the longitudinal grooves, the shoulder pattern portion and the middle pattern portion are all designed based on the actual contact part size of the tire and the running surface, thereby ensuring that the functional effect of each structure can be closer to the actual effect, thereby solving the problem of poor dry and wet handling performance of radial tires for passenger cars in the prior art and improving the driving safety of drivers.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A tire tread structure, characterized in that: include: A plurality of longitudinal grooves (10), each of the longitudinal grooves (10) extending along the circumference of the tire, and the plurality of longitudinal grooves (10) being arranged at intervals along the width direction of the tire to separate the tread into a shoulder pattern portion (20) and a plurality of intermediate pattern portions located between the two shoulder pattern portions (20); The contact portion between the tire and the driving surface has a width T and an area S1, the width W1 of the longitudinal groove (10) satisfies the following relationship with the width T: 0.045T≤W1≤0.075T; the width W2 of the shoulder pattern portion (20), the width W3 of the middle pattern portion and the width T satisfy the following relationship: 0.165T≤W2≤0.195T, 0.115T≤W3≤0.145T; the area S2 of the tire tread structure satisfies the following relationship with the area S1: 0.67S2≤S1≤0.73S2.

2. The tire tread structure according to claim 1, characterized in that: The plurality of longitudinal grooves (10) include: A first longitudinal groove (11) is adjacent to the shoulder pattern portion (20), wherein a width W11 of the first longitudinal groove (11) satisfies the following relationship with the width T: 0.045T≤W11≤0.065T; A second longitudinal groove (12) is located between two adjacent intermediate pattern portions, and a width W12 of the second longitudinal groove (12) satisfies the following relationship with the width T: 0.055T≤W12≤0.075T; The width W11 and the width W12 satisfy the following relationship: 1.15W11≤W12≤1.19W11.

3. The tire tread structure according to claim 2, characterized in that: The plurality of intermediate pattern portions include: The central tread portion (30) coincides with at least a portion of the central plane S of the tire, and the width W31 of the central tread portion (30) and the width W2 of the shoulder tread portion (20) satisfy the following relationship: 1.36W31≤W2≤1.40W31; The crown pattern portion (40) is located between the shoulder pattern portion (20) and the center pattern portion (30), and the width W32 of the shoulder pattern portion (20) and the width W2 of the shoulder pattern portion (20) satisfy the following relationship: 1.36W32≤W2≤1.40W32.

4. The tire tread structure according to claim 3, characterized in that: The tire tread structure further comprises: A connecting groove (50) is arranged on the shoulder pattern portion (20), the inner side and / or the outer side of the tire is connected to the longitudinal groove (10) adjacent to the shoulder pattern portion (20) through the connecting groove (50), and the extending direction of the connecting groove (50) is arranged at a first angle A1 with the width direction of the tire, and the first angle A1 satisfies: 6°≤A1≤8°; There are a plurality of connecting grooves (50), and the plurality of connecting grooves (50) are arranged at intervals along the circumference of the tire to separate the shoulder pattern portion (20) into a plurality of shoulder pattern blocks (21), and at least one of the shoulder pattern blocks (21) is provided with a first sheet structure (60).

5. The tire tread structure according to claim 4, characterized in that: The tire tread structure further comprises: A second sheet-like structure (70) is arranged in the crown pattern portion (40), and two ends of the second sheet-like structure (70) respectively extend into two longitudinal grooves (10) adjacent to the crown pattern portion (40), and an extension direction of the second sheet-like structure (70) forms a second angle A2 with the width direction of the tire, and the second angle A2 satisfies: 45°≤A2≤55°; wherein the second sheet-like structure (70) is multiple, and the multiple second sheet-like structures (70) are arranged at intervals along the circumferential direction of the tire to separate the crown pattern portion (40) into multiple crown pattern blocks (41); A third sheet-like structure (80) is arranged in the crown pattern block (41), and in two of the longitudinal grooves (10) adjacent to the crown pattern block (41), one end of the third sheet-like structure (80) extends into one of the longitudinal grooves (10), and the other end of the third sheet-like structure (80) has a preset distance from the other longitudinal groove (10).

6. The tire tread structure according to claim 5, characterized in that: The tire tread structure further comprises: a fourth sheet-like structure (90) disposed in the central tread portion (30), with two ends of the fourth sheet-like structure (90) respectively extending into two longitudinal grooves (10) adjacent to the central tread portion (30), and a plurality of the fourth sheet-like structures (90) being provided at intervals along the circumferential direction of the tire so as to separate the central tread portion (30) into a plurality of central tread blocks (31); a fifth sheet-like structure (100) arranged in the central tread block (31); in two of the longitudinal grooves (10) adjacent to the central tread block (31), one end of the fifth sheet-like structure (100) extends into one of the longitudinal grooves (10), and a preset distance is provided between the other end of the fifth sheet-like structure (100) and the other longitudinal groove (10); Among them, in two adjacent central pattern blocks (31), the fifth sheet-like structure (100) arranged in each of the central pattern blocks (31) extends into different longitudinal grooves (10) respectively.

7. The tire tread structure according to claim 6, characterized in that: The plurality of shoulder pattern blocks (21) are arranged in one-to-one correspondence with the plurality of crown pattern blocks (41), the plurality of shoulder pattern blocks (21) are arranged in one-to-one correspondence with the plurality of center pattern blocks (31), and the shoulder pattern blocks (21) and the correspondingly arranged crown pattern blocks (41) and center pattern blocks (31) form a sub-pattern group (111); Among the two adjacent sub-pattern groups (111), the length P1 of one sub-pattern group (111) and the length P2 of the other sub-pattern group (111) satisfy: P1≠P2.

8. The tire tread structure according to claim 7, characterized in that: The tire tread structure further comprises N pattern groups (110), each of the pattern groups (110) comprises at least two adjacent sub-pattern groups (111), the N pattern groups (110) comprise a first pattern group (110), a second pattern group (110), a third pattern group (110), a fourth pattern group (110) and a fifth pattern group (110), the length L1 of the first pattern group (110), the length L2 of the second pattern group (111) and the length L3 of the second pattern group (111). 10), the length L2 of the third pattern group (110), the length L3 of the fourth pattern group (110), the length L4 of the fifth pattern group (110) and the length L5 of the fifth pattern group (110) satisfy the following conditions: 1.0L1≤L2≤1.2L1, 1.1L1≤L3≤1.3L1, 1.23L1≤L4≤1.43L1, 1.36L1≤L5≤1.56L1; and N satisfies the following conditions: 62≤N≤78, where N is an even number.

9. The tire tread structure according to claim 6, characterized in that: At least part of the edges of the shoulder pattern block (21) are provided with a first chamfer (120); and / or, At least one corner of the crown pattern block (41) is provided with a second chamfer (130); and / or, A third chamfer (140) is provided at at least one corner of the central tread portion (30); and / or, The bottom of the connecting groove (50) is an arc-shaped surface, and the groove wall of the connecting groove (50) and the normal of the connecting groove (50) are arranged at a third angle A3, and the third angle A3 satisfies: 3°≤A3≤7°; and / or, A fourth chamfer (150) is provided at the connection between the groove wall and the groove bottom of the second longitudinal groove (12), and a fourth angle A4 is formed between the groove wall of the second longitudinal groove (12) and the normal of the second longitudinal groove (12), and the fourth angle A4 satisfies: 6°≤A4≤10°; A fifth chamfer (160) is provided at the connection between the groove wall and the groove bottom of the first longitudinal groove (11); a fifth angle A5 is formed between one groove wall of the first longitudinal groove (11) and the normal line of the first longitudinal groove (11); the fifth angle A5 satisfies: 8°≤A5≤12°; a sixth angle A6 is formed between another groove wall of the first longitudinal groove (11) and the normal line of the first longitudinal groove (11); the sixth angle A6 satisfies: 10°≤A6≤14°.

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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