Tire tread structure and tire with same

Abstract

The utility model provides a tire tread structure and a tire with the same. A plurality of longitudinal grooves of the tire tread structure extend in the circumferential direction of a tire and are arranged at intervals in the width direction of the tire, so that a tire tread is divided into a tire shoulder pattern part and a plurality of middle pattern parts; the tire tread structure has an area S1, the contact part of the tire and the running surface has an area S2, the total area of the plurality of longitudinal grooves is S3, and the area S1, the area S2 and the total area S3 meet the following conditions: 0.68 S1 < = S2 < = 0.74 S1, and 0.21 S1 < = S3 < = 0.23 S1; the first concave part is arranged on the tire shoulder pattern part, the first concave part comprises a first sub-concave part and a second sub-concave part which are communicated with each other, and the first sub-concave part is arranged close to the middle pattern part relative to the second sub-concave part; wherein the depth of the first sub-concave part is smaller than that of the second sub-concave part, so that a step surface is formed at the joint of the first sub-concave part and the second sub-concave part. According to the utility model, the technical problem that a tire of a light-duty truck in the prior art cannot give consideration to controllability, comfort and long mileage at the same time 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. As the only contact component between the car and the driving surface, in addition to the most basic load-bearing and rolling functions, they also greatly affect the passenger riding comfort and the car's handling, mileage and other performance.

[0003] However, with the development and maturity of the light truck market, consumers have increasingly higher requirements for the handling performance, comfort and mileage of light trucks, and the tire tread pattern structure in the prior art cannot meet the above requirements at the same time. 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 technical problem that the tire of a light truck in the prior art cannot take into account the controllability, comfort and long mileage.

[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; the tire tread structure has an area S1, the contact portion of the tire with the driving surface has an area S2, the total area of ​​the plurality of longitudinal grooves is S3, and the areas S1, S2 and the total area S3 satisfy: 0.68S1≤S2≤0.74S1, 0.21S1≤S3≤0.23S1; a first recess is arranged on the shoulder pattern portion, the first recess comprises a first sub-recess and a second sub-recess which are interconnected, the first sub-recess being arranged close to the intermediate pattern portion relative to the second sub-recess; wherein the depth of the first sub-recess is less than the depth of the second sub-recess so that a step surface is formed at the connection between the two.

[0006] Further, one end of the second sub-recess away from the first sub-recess extends to the side of the shoulder pattern portion away from the longitudinal groove, and there is a preset distance between one end of the first sub-recess away from the second sub-recess and the side of the shoulder pattern portion close to the longitudinal groove.

[0007] Furthermore, the plurality of longitudinal grooves include: a first longitudinal groove, located between two adjacent middle pattern portions; a second longitudinal groove, adjacent to the shoulder pattern portion; a width W1 of the first longitudinal groove and a width W2 of the second longitudinal groove satisfy: 1.04W1≤W2≤1.08W1; wherein, the contact portion between the tire and the driving surface has a width T, and the width W1, the width W2 and the width T satisfy: 0.047T≤W1≤0.057T, 0.05T≤W2≤0.06T.

[0008] Furthermore, the multiple intermediate tread portions include: a center tread portion, which coincides with at least a portion of the center plane S of the tire; a crown tread portion, which is located between the center tread portion and the shoulder tread portion; wherein the contact portion of the tire with the running surface has a width T, and the width W3 of the shoulder tread portion, the width W4 of the crown tread portion, the width W5 of the center tread portion and the width T satisfy: 0.165T≤W3≤0.195T, 0.125T≤W4≤0.155T, 0.115T≤W5≤0.155T; the width W3, the width W4 and the width W5 satisfy: 1.1W5≤W3≤1.5W5, 1.01W5≤W4≤1.05W5.

[0009] Furthermore, the tire tread structure further includes: a second recessed portion, which is arranged on the shoulder pattern portion, one end of the second recessed portion extends to the side of the shoulder pattern portion close to the longitudinal groove, the other end of the second recessed portion extends to at least a portion of the inner wall of the first sub-recessed portion, and the extension direction of the second recessed portion forms a first angle A1 with the inner wall of the portion, and the first angle A1 satisfies: 110°≤A1≤120°; a third recessed portion, which is arranged on the shoulder pattern portion, one end of the third recessed portion extends to the side of the shoulder pattern portion close to the longitudinal groove, the other end of the third recessed portion is at least partially aligned with the inner wall of the first sub-recessed portion, and the second ... There is a preset distance between the side surfaces of the shoulder pattern portion away from the longitudinal groove, and the extension direction of the third recess is set at a second angle A2 with the extension direction of the longitudinal groove, and the second angle A2 satisfies: 75°≤A2≤85°; wherein, there are multiple first recesses, and there are multiple second recesses, the multiple first recesses are arranged at intervals along the circumference of the tire, the multiple second recesses are arranged one-to-one with the multiple first recesses, the multiple first recesses and the multiple second recesses separate the shoulder pattern portion into multiple shoulder pattern blocks, and at least two third recesses are arranged on the shoulder pattern blocks.

[0010] Furthermore, the tire tread structure also includes: a first connecting groove, which is arranged on the central tread portion to connect the longitudinal grooves located on both sides of the central tread portion, the first connecting groove including a first sub-connecting groove, a second sub-connecting groove and a third sub-connecting groove that are interconnected, and the second sub-connecting groove is located between the first sub-connecting groove and the third sub-connecting groove; a fourth recess, which is arranged on one side of the first connecting groove, one end of the fourth recess extends to the inner wall of the first connecting groove, and the other end of the fourth recess has a preset distance from the side surface of the central tread portion, there are at least two fourth recesses, and an extension direction of at least one fourth recess is arranged at a third angle A3 with an extension direction of the first sub-connecting groove, and an extension direction of at least another fourth recess is arranged at a third angle A3 with the extension direction of the first sub-connecting groove, and an extension direction of at least another fourth recess is arranged at a third angle A3 with the extension direction of the first sub-connecting groove. The extension directions of the three sub-connecting grooves are arranged at a fourth angle A4, and the third angle A3 and the fourth angle A4 satisfy: 45°≤A3≤55°, 45°≤A4≤55°; the fifth recess is arranged on the central tread portion, one end of the fifth recess extends to a side surface of the central tread portion, and a preset distance is provided between the other end of the fifth recess and the other side surface of the central tread portion, and the extension direction of the fifth recess is arranged at a sixth angle A6 with the extension direction of the longitudinal groove, and the sixth angle A6 satisfies: 55°≤A6≤65°; wherein, there are multiple first connecting grooves, and the multiple first connecting grooves are arranged at intervals along the circumference of the tire to separate the central tread portion into multiple central tread blocks, and the central tread block is provided with at least two fifth recesses.

[0011] Furthermore, the tire tread structure also includes: a second connecting groove, which is arranged on the crown pattern portion to connect the longitudinal grooves located on both sides of the crown pattern portion, the second connecting groove includes a fourth sub-connecting groove and a fifth sub-connecting groove which are interconnected, and the fourth sub-connecting groove is arranged close to the central pattern portion; wherein, there are multiple second connecting grooves, and the multiple second connecting grooves are arranged at intervals along the circumferential direction of the tire to separate the crown pattern portion into multiple crown pattern blocks; a sixth recess is arranged on the crown pattern block, one end of the sixth recess extends to the inner wall of the second connecting groove, and the other end of the sixth recess has a preset distance from the side surface of the crown pattern portion, and the extension direction of the sixth recess forms a seventh angle A7 with the extension direction of the fourth sub-connecting groove, and the seventh Angle A7 satisfies: 35°≤A7≤45°; the seventh recess is arranged on the crown block, and the two ends of the seventh recess respectively extend to the two side surfaces of the crown block, and the extension direction of the seventh recess and the extension direction of the longitudinal groove form an eighth angle A8, and the eighth angle A8 satisfies: 95°≤A8≤105°; the eighth recess is arranged on the crown block, and the eighth recess is located between the seventh recess and the second connecting groove, one end of the eighth recess extends to one side surface of the crown block, and the other end of the eighth recess has a preset distance from the other side surface of the crown block, and the extension direction of the eighth recess and the extension direction of the longitudinal groove form a ninth angle A9, and the ninth angle A9 satisfies: 95°≤A9≤105°.

[0012] Furthermore, multiple shoulder pattern blocks are arranged in one-to-one correspondence with multiple center pattern blocks, and multiple shoulder pattern blocks are arranged in one-to-one correspondence with multiple crown pattern blocks, and a pattern group is formed between the shoulder pattern blocks and the corresponding center pattern blocks and crown pattern blocks, and the pattern group has a length L; wherein, within one pattern group, the width W6 of the first recess, the width W7 of the first connecting groove, the width W8 of the second connecting groove and the length L satisfy: 0.12L≤W6≤014L, 0.05L≤W7≤0.07L, 0.08L≤W8≤0.11L.

[0013] Furthermore, there are multiple pattern groups, including 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: L1<L2<L3, 1.1L2≤L3≤1.2L2, 1.1L1≤L2≤1.2L1; and / or, the tire tread structure also includes a protrusion, the protrusion is arranged on the bottom wall of the first connecting groove, and the height H1 of the protrusion satisfies: 1.8mm≤H1≤2.2mm.

[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, a plurality of longitudinal grooves of the tire tread structure extend along the circumference of the tire, and the plurality of longitudinal grooves are arranged at intervals along the width direction of the tire to separate the tread into a shoulder pattern portion and a plurality of intermediate pattern portions located between the two shoulder pattern portions. The tire tread structure has an area S1, the contact portion of the tire with the driving surface has an area S2, the total area of ​​the plurality of longitudinal grooves is S3, and the area S1, the area S2 and the total area S3 satisfy: 0.68S1≤S2≤0.74S1, 0.21S1≤S3≤0.23S1. The first recess is arranged on the shoulder pattern portion, and the first recess includes a first sub-recess and a second sub-recess that are interconnected, and the first sub-recess is arranged close to the intermediate pattern portion relative to the second sub-recess. The depth of the first sub-recess is less than the depth of the second sub-recess, so that a step surface is formed at the connection between the two. In this way, the proportional relationship between the contact area S2 of the tire and the driving surface and the tire tread structure area S1 can improve the utilization rate of the tire tread structure, reduce unnecessary energy loss during the tire rolling process, and thus increase the tire's mileage, while the proportional relationship between the total area S3 of the plurality of longitudinal grooves and the tire tread structure area S1 ensures that the total drainage capacity of the plurality of longitudinal grooves is large enough to improve the tire's anti-skid ability and wet handling performance. At the same time, the first concave portion can, on the one hand, break the water film between the tire and the driving surface, avoiding the formation of a complete water film between the tire tread and the driving surface and causing the tire to float on the water, further improving the wet handling performance of the tire; on the other hand, it can improve the uniformity of the rigidity distribution of the shoulder pattern portion, reduce pump noise, thereby improving the driving comfort of the driver, and thus solving the technical problem that the tires of light trucks in the prior art cannot take into account handling, comfort and long mileage. 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 cross-sectional schematic diagram of a first concave portion of a tire tread structure;

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

[0020] Figure 4 The method for forming a tire during the tire processing is shown. Figure 1 A front view of a steel sheet of a fifth concave portion, a sixth concave portion and an eighth concave portion of a tire tread structure;

[0021] Figure 5 The method for forming a tire during the tire processing is shown. Figure 1 A front view of a steel sheet of a fourth concave portion of a tire tread structure;

[0022] Figure 6 The method for forming a tire during the tire processing is shown. Figure 1 A front view of a steel sheet of a seventh concave portion of a tire tread structure;

[0023] Figure 7 The method for forming a tire during the tire processing is shown. Figure 1 A front view of a steel sheet of a second concave portion of a tire tread structure;

[0024] Figure 8 The method for forming a tire during the tire processing is shown. Figure 1 A front view of a steel sheet of a third concave portion of a tire tread structure;

[0025] Fig. 9 Shows Figure 1 A schematic cross-sectional view of a second longitudinal groove of a tire tread structure in FIG.

[0026] Fig.10 Shows Figure 1 A schematic cross-sectional view of a first longitudinal groove of a tire tread structure;

[0027] Fig.11 Shows Figure 1 Schematic cross-sectional view of the first connecting groove, the first recess and the fourth sub-connecting groove of the tire tread structure.

[0028] The above drawings include the following reference numerals:

[0029] 10. Longitudinal groove; 11. First longitudinal groove; 12. Second longitudinal groove; 20. Shoulder pattern portion; 21. Shoulder pattern block; 30. First recess; 31. First sub-recess; 32. Second sub-recess; 33. Step surface; 40. Center pattern portion; 41. Center pattern block; 50. Crown pattern portion; 51. Crown pattern block; 60. Second recess; 70. Third recess; 80. First connecting groove; 81. First sub-connecting groove; 82. Second sub-connecting groove; 83. Third sub-connecting groove; 90. Fourth recess; 100. Fifth recess; 110. Second connecting groove; 111. Fourth sub-connecting groove; 112. Fifth sub-connecting groove; 120. Sixth recess; 130. Seventh recess; 140. Eighth recess; 150. Protrusion. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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.

[0033] In order to solve the technical problem in the prior art that tires for light trucks cannot take into account handling, comfort and long mileage at the same time, the present application provides a tire tread structure and a tire having the same.

[0034] like Figures 1 to 11 As shown, the tire tread structure includes a plurality of longitudinal grooves 10 and a first recess 30. Each longitudinal groove 10 extends along the circumference of the tire, and the plurality of longitudinal grooves 10 are arranged at intervals along the width direction of the tire to separate the tread into a shoulder pattern portion 20 and a plurality of intermediate pattern portions located between the two shoulder pattern portions 20. The tire tread structure has an area S1, the contact portion of the tire with the running surface has an area S2, the total area of ​​the plurality of longitudinal grooves 10 is S3, and the area S1, the area S2 and the total area S3 satisfy: 0.68S1≤S2≤0.74S1, 0.21S1≤S3≤0.23S1. The first recess 30 is arranged on the shoulder pattern portion 20, and the first recess 30 includes a first sub-recess 31 and a second sub-recess 32 that are connected to each other, and the first sub-recess 31 is arranged close to the intermediate pattern portion relative to the second sub-recess 32. The depth of the first sub-recess 31 is smaller than the depth of the second sub-recess 32 , so that a step surface 33 is formed at the connection between the two.

[0035] According to the technical solution of this embodiment, a plurality of longitudinal grooves 10 of the tire tread structure extend along the circumference of the tire, and the plurality of longitudinal grooves 10 are arranged at intervals along the width direction of the tire to 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 tire tread structure has an area S1, the contact portion of the tire with the driving surface has an area S2, the total area of ​​the plurality of longitudinal grooves 10 is S3, and the area S1, the area S2 and the total area S3 satisfy: 0.68S1≤S2≤0.74S1, 0.21S1≤S3≤0.23S1. The first recess 30 is arranged on the shoulder pattern portion 20, and the first recess 30 includes a first sub-recess 31 and a second sub-recess 32 that are connected to each other, and the first sub-recess 31 is arranged close to the intermediate pattern portion relative to the second sub-recess 32. The depth of the first sub-recess 31 is less than the depth of the second sub-recess 32, so that a step surface 33 is formed at the connection between the two. In this way, the proportional relationship between the contact area S2 of the tire and the driving surface and the tire tread structure area S1 can improve the utilization rate of the tire tread structure, reduce unnecessary energy loss during the tire rolling process, and thus increase the tire's mileage, while the proportional relationship between the total area S3 of the plurality of longitudinal grooves 10 and the tire tread structure area S1 ensures that the total drainage capacity of the plurality of longitudinal grooves 10 is large enough to improve the tire's anti-skid ability and wet handling performance. At the same time, the first concave portion 30 can, on the one hand, break the water film between the tire and the driving surface, avoiding the formation of a complete water film between the tire tread and the driving surface and causing the tire to float on the water, further improving the wet handling performance of the tire; on the other hand, it can improve the uniformity of the rigidity distribution of the shoulder pattern portion 20, reduce pump noise, thereby improving the driving comfort of the driver, and thus solving the technical problem that the tire of the light truck in the prior art cannot take into account the handling, comfort and long mileage.

[0036] In this embodiment, the number of longitudinal grooves 10 is four.

[0037] In this embodiment, the depth H of the four longitudinal grooves 10 satisfies: H = 10.5 mm. Thus, the above arrangement enables the tire tread structure to have a larger rubber volume, thereby improving the wear performance of the tire tread structure and thus extending the service life of the tire.

[0038] In this embodiment, the total area S3 of the four longitudinal grooves 10 satisfies the following relationship with the area S1: S3 = 0.21S1, so as to ensure that the ratio between the total area S3 and the area S1 is appropriate.

[0039] Specifically, the step surface 33 is actually a tire dam structure.

[0040] like Figure 1As shown, the end of the second sub-recess 32 away from the first sub-recess 31 extends to the side of the shoulder pattern portion 20 away from the longitudinal groove 10, and there is a preset distance between the end of the first sub-recess 31 away from the second sub-recess 32 and the side of the shoulder pattern portion 20 close to the longitudinal groove 10. In this way, the shoulder pattern portion 20 actually adopts a closed shoulder design, which can improve the rigidity of the tire pattern block on the one hand, thereby improving the handling performance of the tire, and on the other hand, it can reduce the pumping noise at the shoulder pattern portion 20 of the tire, so as to reduce the driving noise of the tire and further improve the driving comfort of the user. At the same time, the shoulder pattern portion 20 of the closed shoulder design has a more saturated pattern structure to improve the wear uniformity of the shoulder pattern portion 20 and extend the service life of the tire.

[0041] Specifically, the closed shoulder design with the tire dam structure can further improve the uniformity of the rigidity distribution of the shoulder pattern portion 20 to further reduce pumping noise and improve the driving comfort of the user.

[0042] like Figure 1 As shown, the plurality of longitudinal grooves 10 include a first longitudinal groove 11 and a second longitudinal groove 12. The first longitudinal groove 11 is located between two adjacent middle pattern portions. The second longitudinal groove 12 is adjacent to the shoulder pattern portion 20. The width W1 of the first longitudinal groove 11 and the width W2 of the second longitudinal groove 12 satisfy: 1.04W1≤W2≤1.08W1. Among them, the contact portion between the tire and the driving surface has a width T, and the width W1, the width W2 and the width T satisfy: 0.047T≤W1≤0.057T, 0.05T≤W2≤0.06T. In this way, the proportional relationship between the width W1 of the first longitudinal groove 11 and the width W2 of the second longitudinal groove 12 enables the width of the longitudinal groove 10 to be further adjusted according to the different setting positions thereof, so as to further improve the drainage capacity of the tire. At the same time, the proportional relationship between width W1, width W2 and width T allows width W1 and width W2 to be further adjusted according to the actual ground contact width of the tire, thereby ensuring that the drainage capacity of the tire is relatively appropriate, enabling rapid drainage of the tire, and further improving the tire's anti-skid performance and wet handling performance.

[0043] In this embodiment, the width W1 of the first longitudinal groove 11 and the width W2 of the second longitudinal groove 12 satisfy: W2=1.06W1, so as to ensure that the proportional relationship between the width W1 and the width W2 is relatively appropriate.

[0044] like Fig. 9As shown, a chamfer is provided at the connection between the groove wall and the groove bottom of the second longitudinal groove 12, and a groove wall of the second longitudinal groove 12 is set at a tenth angle A10 with the normal of the second longitudinal groove 12, and the tenth angle A10 satisfies: 6°≤A10≤10°, and another groove wall of the second longitudinal groove 12 is set at an eleventh angle A11 with the normal of the second longitudinal groove 12, and the eleventh angle A11 satisfies: 8°≤A11≤12°.

[0045] like Fig.10 As shown, a chamfer is provided at the connection between the groove wall and the groove bottom of the first longitudinal groove 11, and a twelfth angle A12 is formed between the groove wall of the first longitudinal groove 11 and the normal line of the first longitudinal groove 11, and the twelfth angle A12 satisfies: 6°≤A12≤10°.

[0046] like Figure 1 As shown, the plurality of intermediate tread portions include a center tread portion 40 and a crown tread portion 50. The center tread portion 40 coincides with at least a portion of the center plane S of the tire. The crown tread portion 50 is located between the center tread portion 40 and the shoulder tread portion 20. The contact portion of the tire with the running surface has a width T, and the width W3 of the shoulder tread portion 20, the width W4 of the crown tread portion 50, the width W5 of the center tread portion 40 and the width T satisfy: 0.165T≤W3≤0.195T, 0.125T≤W4≤0.155T, 0.115T≤W5≤0.155T. The width W3, the width W4 and the width W5 satisfy: 1.1W5≤W3≤1.5W5, 1.01W5≤W4≤1.05W5. In this way, the proportional relationship between the width W3 of the shoulder pattern portion 20, the width W4 of the crown pattern portion 50, the width W5 of the center pattern portion 40 and the width T further improves the utilization rate of the tire tread structure, thereby increasing the tire's mileage. At the same time, the proportional relationship between the width W3, the width W4 and the width W5 can improve the center stability of the vehicle during driving (the widths of the intermediate pattern portions are relatively similar).

[0047] In this embodiment, the ratio among width W3, width W4 and width W5 satisfies: W3=1.3W5, W4=1.03W5, so that the ratio among width W3, width W4 and width W5 is more appropriate, further improving the central stability of the vehicle during driving.

[0048] like Figure 1As shown, the tire tread structure further includes a second recess 60 and a third recess 70, the second recess 60 is arranged on the shoulder pattern portion 20, one end of the second recess 60 extends to the side of the shoulder pattern portion 20 close to the longitudinal groove 10, the other end of the second recess 60 extends to at least part of the inner wall of the first sub-recess 31, the extension direction of the second recess 60 and the inner wall of the part are arranged at a first angle A1, and the first angle A1 satisfies: 110°≤A1≤120°. The third recess 70 is arranged on the shoulder pattern portion 20, one end of the third recess 70 extends to the side of the shoulder pattern portion 20 close to the longitudinal groove 10, the other end of the third recess 70 and the side of the shoulder pattern portion 20 away from the longitudinal groove 10 have a preset distance, the extension direction of the third recess 70 and the extension direction of the longitudinal groove 10 are arranged at a second angle A2, and the second angle A2 satisfies: 75°≤A2≤85°. There are multiple first recesses 30 and multiple second recesses 60. Multiple first recesses 30 are arranged at intervals along the circumference of the tire. Multiple second recesses 60 are arranged one-to-one with multiple first recesses 30. Multiple first recesses 30 and multiple second recesses 60 divide the shoulder pattern portion 20 into multiple shoulder pattern blocks 21. At least two third recesses 70 are arranged on the shoulder pattern block 21. In this way, the shoulder pattern block 21 actually adopts a multi-recess design (first recess 30, second recess 60 and third recess 70). On the one hand, the multi-recess design can optimize the rigidity distribution of the shoulder pattern block 21 to reduce the impact energy of the road on the tire, thereby improving the driving comfort of the user; on the other hand, it is conducive to the heat dissipation of the tread, avoiding the rigidity loss caused by overheating of the tread, thereby improving the traction ability of the tire. At the same time, the multi-recess design can also increase the probability of the tire cutting the water film, thereby improving the anti-slip performance and wet handling ability of the tire.

[0049] In this embodiment, the second recess 60 and the third recess 70 are actually steel sheet grooves with a small width.

[0050] In the present embodiment, the plurality of third recesses 70 are arranged parallel to each other along the tire circumferential direction.

[0051] Specifically, one shoulder block 21 is provided with two third recessed portions 70 of different lengths.

[0052] In this embodiment, the step surface 33 can improve the uniformity of the rigidity distribution of the shoulder pattern portion 20 and reduce the risk of damage at the connection between the second recessed portion 60 and the first recessed portion 30 .

[0053] like Figure 1As shown, the tire tread structure further includes a first connecting groove 80, a fourth recess 90 and a fifth recess 100. The first connecting groove 80 is provided on the central pattern portion 40 to connect the longitudinal grooves 10 located on both sides of the central pattern portion 40. The first connecting groove 80 includes a first sub-connecting groove 81, a second sub-connecting groove 82 and a third sub-connecting groove 83 that are interconnected. The second sub-connecting groove 82 is located between the first sub-connecting groove 81 and the third sub-connecting groove 83. The fourth recess 90 is arranged on one side of the first connecting groove 80, one end of the fourth recess 90 extends to the inner wall of the first connecting groove 80, and the other end of the fourth recess 90 has a preset distance from the side of the center pattern portion 40. There are at least two fourth recesses 90, and the extension direction of at least one fourth recess 90 is set at a third angle A3 with the extension direction of the first sub-connecting groove 81, and the extension direction of at least another fourth recess 90 is set at a fourth angle A4 with the extension direction of the third sub-connecting groove 83. The third angle A3 and the fourth angle A4 satisfy: 45°≤A3≤55°, 45°≤A4≤55°. The fifth recess 100 is arranged on the central tread portion 40, one end of the fifth recess 100 extends to one side of the central tread portion 40, the other end of the fifth recess 100 is at a preset distance from the other side of the central tread portion 40, and the extension direction of the fifth recess 100 and the extension direction of the longitudinal groove 10 are arranged at a sixth angle A6, and the sixth angle A6 satisfies: 55°≤A6≤65°. There are a plurality of first connecting grooves 80, and the plurality of first connecting grooves 80 are arranged at intervals along the circumference of the tire to separate the central tread portion 40 into a plurality of central pattern blocks 41, and the central pattern block 41 is provided with at least two fifth recesses 100. In this way, the above-mentioned arrangement of the first connecting grooves 80 can connect the longitudinal grooves 10 located on both sides of the central tread portion 40 to realize the liquid flow between the two longitudinal grooves 10, further improving the drainage capacity of the tire. At the same time, the center pattern block 41 actually adopts a multi-recess design (the fourth recess 90 and the fifth recess 100). The multi-recess design can optimize the rigidity distribution of the center pattern block 41 on the one hand, so as to reduce the impact energy of the road surface on the tire, thereby improving the driving comfort of the user; on the other hand, it is conducive to the heat dissipation of the tread, avoiding the rigidity loss caused by the overheating of the tread, thereby improving the traction capacity of the tire. At the same time, the multi-recess design can also increase the probability of the tire breaking the water film, thereby improving the tire's anti-skid performance and wetland handling ability. At the same time, the multi-recess design and the first connecting groove 80 can work together to reduce the rigidity of the center pattern portion 40 to increase the bite force between the tire and the driving surface, thereby improving the impact resistance of the tire and the driving comfort of the user.

[0054] In this embodiment, the fourth recess 90 and the fifth recess 100 are actually steel sheet grooves with a small width.

[0055] In this embodiment, two fifth recesses 100 are disposed on one central pattern block 41 .

[0056] Specifically, two adjacent fifth recesses 100 are centrally symmetrically arranged, and in the two adjacent fifth recesses 100 , each fifth recess 100 extends into a different longitudinal groove 10 .

[0057] In this embodiment, the third angle A3 and the fourth angle A4 satisfy: A3=A4, so that the proportional relationship between the third angle A3 and the fourth angle A4 is relatively appropriate.

[0058] like Figure 1As shown, the tire tread structure further includes a second connecting groove 110, a sixth recess 120, a seventh recess 130 and an eighth recess 140. The second connecting groove 110 is provided on the crown pattern portion 50 to connect the longitudinal grooves 10 located on both sides of the crown pattern portion 50. The second connecting groove 110 includes a fourth sub-connecting groove 111 and a fifth sub-connecting groove 112 that are connected to each other. The fourth sub-connecting groove 111 is provided close to the central pattern portion 40. There are a plurality of second connecting grooves 110, and the plurality of second connecting grooves 110 are spaced apart along the circumferential direction of the tire to separate the crown pattern portion 50 into a plurality of crown pattern blocks 51. The sixth recess 120 is arranged on the crown pattern block 51, one end of the sixth recess 120 extends to the inner wall of the second connecting groove 110, the other end of the sixth recess 120 is at a preset distance from the side of the crown pattern portion 50, the extension direction of the sixth recess 120 and the extension direction of the fourth sub-connecting groove 111 are arranged at a seventh angle A7, and the seventh angle A7 satisfies: 35°≤A7≤45°. The seventh recess 130 is arranged on the crown pattern block 51, the two ends of the seventh recess 130 extend to the two side surfaces of the crown pattern block 51 respectively, the extension direction of the seventh recess 130 and the extension direction of the longitudinal groove 10 are arranged at an eighth angle A8, and the eighth angle A8 satisfies: 95°≤A8≤105°. The eighth recess 140 is arranged on the crown pattern block 51, and is located between the seventh recess 130 and the second connecting groove 110. One end of the eighth recess 140 extends to one side of the crown pattern block 51, and the other end of the eighth recess 140 is at a preset distance from the other side of the crown pattern block 51. The extension direction of the eighth recess 140 and the extension direction of the longitudinal groove 10 form a ninth angle A9, and the ninth angle A9 satisfies: 95°≤A9≤105°. In this way, the second connecting groove 110 can connect the longitudinal grooves 10 located on both sides of the crown pattern portion 50 to achieve liquid circulation between the two longitudinal grooves 10, further improving the drainage capacity of the tire. At the same time, the crown pattern block 51 actually adopts a multi-recess design (the sixth recess 120, the seventh recess 130 and the eighth recess 140). The multi-recess design can optimize the rigidity distribution of the crown pattern block 51 on the one hand, so as to reduce the impact energy of the road on the tire, thereby improving the driving comfort of the user; on the other hand, it is conducive to the heat dissipation of the tread, avoiding the rigidity loss caused by overheating of the tread, thereby improving the traction ability of the tire. At the same time, the multi-recess design can also increase the probability of the tire breaking the water film, thereby improving the tire's anti-skid performance and wetland handling ability.

[0059] In this embodiment, the sixth recess 120 , the seventh recess 130 , and the eighth recess 140 are actually steel sheet grooves with a small width.

[0060] In this embodiment, the eighth angle A8 and the ninth angle A9 satisfy: A8=A9, so that the value between the eighth angle A8 and the ninth angle A9 is more appropriate.

[0061] like Fig.11 As shown, the cross-sectional structures of the first connecting groove 80, the first recess 30 and the fourth sub-connecting groove 111 in this embodiment are relatively similar, the bottom walls are all arc-shaped surfaces, and the side walls and the normals of each structure are arranged at a thirteenth angle A13, and the thirteenth angle A13 satisfies: 1°≤A13≤5°.

[0062] like Figure 1 As shown, a plurality of shoulder pattern blocks 21 are arranged in one-to-one correspondence with a plurality of center pattern blocks 41, and a plurality of shoulder pattern blocks 21 are arranged in one-to-one correspondence with a plurality of crown pattern blocks 51, and a pattern group is formed between the shoulder pattern blocks 21 and the corresponding center pattern blocks 41 and the crown pattern blocks 51, and the pattern group has a length L. Among them, in one pattern group, the width W6 of the first recess 30, the width W7 of the first connecting groove 80, the width W8 of the second connecting groove 110 and the length L satisfy: 0.12L≤W6≤014L, 0.05L≤W7≤0.07L, 0.08L≤W8≤0.11L. In this way, the proportional relationship among the width W6 of the first recess 30, the width W7 of the first connecting groove 80, the width W8 of the second connecting groove 110 and the length L makes the width W6 of two adjacent first recesses 30 different, the width W7 of two adjacent first connecting grooves 80 different, and the width W8 of two adjacent second connecting grooves 110 different, thereby disrupting the frequency of the pattern cavity noise, reducing the driving noise of the tire, and thereby improving the driving comfort of the driver.

[0063] like Figure 1 and Figure 3As shown, there are multiple pattern groups, including 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: L1<L2<L3, 1.1L2≤L3≤1.2L2, 1.1L1≤L2≤1.2L1; and / or, the tire tread structure further includes a protrusion 150, the protrusion 150 is arranged on the bottom wall of the first connecting groove 80, and the height H1 of the protrusion 150 satisfies: 1.8mm≤H1≤2.2mm. In this way, three pattern groups with different lengths (length L1, length L2 and length L3) are arranged in a disordered and mixed manner along the circumference of the tire, which can affect the vibration frequency of the gas in the groove, effectively disrupt the pattern cavity noise frequency, reduce the peak value of the tire's driving noise, thereby reducing the tire's driving noise, and further improving the driving comfort of the driver. At the same time, the protrusion 150 provided on the bottom wall of the first connecting groove 80 can enhance the rigidity of the central tread block 41, reduce the deformation of the edge of the tread block, ensure the straight-line running stability of the tire, and further enhance the handling performance of the tire.

[0064] In this embodiment, the specific arrangement of the first pattern group, the second pattern group and the third pattern group is confirmed after pattern style simulation optimization, and the overall arrangement is optimized to ensure that the first pattern group, the second pattern group and the third pattern group can disperse the energy of the concentrated sound at a specific frequency into a wide-band sound, thereby making the sound smoother and further reducing the driving noise of the tire.

[0065] It should be noted that the number of types of pattern groups with different lengths L is an irrational number, so as to avoid a geometric relationship between different lengths L that affects the noise reduction capability of the pattern group.

[0066] In this embodiment, the height H1 of the protrusion 150 satisfies: H1=2 mm, so that the value of the height H1 of the protrusion 150 is more appropriate, which improves the straight-line driving stability of the tire and further improves the handling performance of the tire.

[0067] In this embodiment, the protrusion 150 is actually a tire dam structure.

[0068] In this embodiment, two protrusions 150 are provided on the bottom wall of the first connecting groove 80 , one protrusion 150 is provided on the bottom wall of the first sub-connecting groove 81 , and the other protrusion 150 is provided on the bottom wall of the third sub-connecting groove 83 .

[0069] In this embodiment, the tire tread structure as a whole is a centrosymmetric structure, that is, the tire tread structure located on one side of the center plane S can overlap with the tire tread structure located on the other side of the center plane S after rotating 180°.

[0070] like Figures 4 to 8As shown, the drawings provide a front view of a steel sheet used to form a fifth recess 100, a sixth recess 120, an eighth recess 140, a fourth recess 90, a seventh recess 130, a second recess 60 and a third recess 70 during tire processing, so as to reflect the groove cross-sectional shape of each recess from the side.

[0071] The present application also provides a tire (not shown), which includes the tire tread structure described above.

[0072] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0073] The plurality of longitudinal grooves of the tire tread structure extend along the circumference of the tire, and the plurality of longitudinal grooves are arranged at intervals along the width direction of the tire to separate the tread into a shoulder pattern portion and a plurality of intermediate pattern portions located between the two shoulder pattern portions. The tire tread structure has an area S1, the contact portion of the tire with the driving surface has an area S2, the total area of ​​the plurality of longitudinal grooves is S3, and the area S1, the area S2 and the total area S3 satisfy: 0.68S1≤S2≤0.74S1, 0.21S1≤S3≤0.23S1. The first recess is arranged on the shoulder pattern portion, and the first recess includes a first sub-recess and a second sub-recess that are interconnected, and the first sub-recess is arranged close to the intermediate pattern portion relative to the second sub-recess. The depth of the first sub-recess is less than the depth of the second sub-recess, so that a step surface is formed at the connection between the two. In this way, the proportional relationship between the contact area S2 of the tire and the driving surface and the tire tread structure area S1 can improve the utilization rate of the tire tread structure, reduce unnecessary energy loss during the tire rolling process, and thus increase the tire's mileage, while the proportional relationship between the total area S3 of the plurality of longitudinal grooves and the tire tread structure area S1 ensures that the total drainage capacity of the plurality of longitudinal grooves is large enough to improve the tire's anti-skid ability and wet handling performance. At the same time, the first concave portion can, on the one hand, break the water film between the tire and the driving surface, avoiding the formation of a complete water film between the tire tread and the driving surface and causing the tire to float on the water, further improving the wet handling performance of the tire; on the other hand, it can improve the uniformity of the rigidity distribution of the shoulder pattern portion, reduce pump noise, thereby improving the driving comfort of the driver, and thus solving the technical problem that the tires of light trucks in the prior art cannot take into account handling, comfort and long mileage.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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 tire tread structure has an area S1, the contact portion between the tire and the running surface has an area S2, the total area of ​​the plurality of longitudinal grooves (10) is S3, and the area S1, the area S2 and the total area S3 satisfy the following conditions: 0.68S1≤S2≤0.74S1, 0.21S1≤S3≤0.23S1; A first recess (30) is arranged on the shoulder tread portion (20), the first recess (30) comprising a first sub-recess (31) and a second sub-recess (32) which are connected to each other, the first sub-recess (31) being arranged closer to the middle tread portion relative to the second sub-recess (32); The depth of the first sub-recess (31) is smaller than the depth of the second sub-recess (32), so that a step surface (33) is formed at the connection between the two.

2. The tire tread structure according to claim 1, characterized in that: One end of the second sub-recess (32) away from the first sub-recess (31) extends to the side of the shoulder pattern portion (20) away from the longitudinal groove (10), and a preset distance is provided between one end of the first sub-recess (31) away from the second sub-recess (32) and the side of the shoulder pattern portion (20) close to the longitudinal groove (10).

3. The tire tread structure according to claim 1, characterized in that: The plurality of longitudinal grooves (10) include: A first longitudinal groove (11) is located between two adjacent intermediate tread portions; A second longitudinal groove (12) adjacent to the shoulder tread portion (20); The width W1 of the first longitudinal groove (11) and the width W2 of the second longitudinal groove (12) satisfy the following relationship: 1.04W1≤W2≤1.08W1; The contact portion between the tire and the driving surface has a width T, and the width W1, the width W2 and the width T satisfy the following conditions: 0.047T≤W1≤0.057T, 0.05T≤W2≤0.06T.

4. The tire tread structure according to claim 1, characterized in that: The plurality of intermediate pattern portions include: A central tread portion (40), wherein the central tread portion (40) coincides with at least a portion of a central plane S of the tire; A crown tread portion (50) located between the center tread portion (40) and the shoulder tread portion (20); The contact portion between the tire and the driving surface has a width T, and the width W3 of the shoulder pattern portion (20), the width W4 of the crown pattern portion (50), the width W5 of the center pattern portion (40) and the width T satisfy the following conditions: 0.165T≤W3≤0.195T, 0.125T≤W4≤0.155T, 0.115T≤W5≤0.155T; The width W3, the width W4 and the width W5 satisfy the following conditions: 1.1W5≤W3≤1.5W5, 1.01W5≤W4≤1.05W5.

5. The tire tread structure according to claim 4, characterized in that: The tire tread structure further comprises: A second recess (60) is arranged on the shoulder tread portion (20), one end of the second recess (60) extends to the side of the shoulder tread portion (20) close to the longitudinal groove (10), and the other end of the second recess (60) extends to at least a portion of the inner wall of the first sub-recess (31), and the extension direction of the second recess (60) forms a first angle A1 with the inner wall, and the first angle A1 satisfies: 110°≤A1≤120°; A third recess (70) is arranged on the shoulder pattern portion (20), one end of the third recess (70) extends to the side of the shoulder pattern portion (20) close to the longitudinal groove (10), and a preset distance is provided between the other end of the third recess (70) and the side of the shoulder pattern portion (20) away from the longitudinal groove (10), and an extension direction of the third recess (70) and an extension direction of the longitudinal groove (10) form a second angle A2, and the second angle A2 satisfies: 75°≤A2≤85°; There are a plurality of first recesses (30), a plurality of second recesses (60), the plurality of first recesses (30) are arranged at intervals along the circumference of the tire, the plurality of second recesses (60) are arranged in one-to-one correspondence with the plurality of first recesses (30), the plurality of first recesses (30) and the plurality of second recesses (60) separate the shoulder pattern portion (20) into a plurality of shoulder pattern blocks (21), and at least two third recesses (70) are arranged on the shoulder pattern block (21).

6. The tire tread structure according to claim 5, characterized in that: The tire tread structure further comprises: a first connecting groove (80) disposed on the central tread portion (40) for connecting the longitudinal grooves (10) located on both sides of the central tread portion (40); the first connecting groove (80) comprises a first sub-connecting groove (81), a second sub-connecting groove (82) and a third sub-connecting groove (83) which are interconnected; the second sub-connecting groove (82) is located between the first sub-connecting groove (81) and the third sub-connecting groove (83); A fourth recess (90) is arranged on one side of the first connecting groove (80), one end of the fourth recess (90) extends to the inner wall of the first connecting groove (80), and the other end of the fourth recess (90) is at a preset distance from the side surface of the central pattern portion (40). There are at least two fourth recesses (90), and the extension direction of at least one of the fourth recesses (90) is arranged at a third angle A3 with the extension direction of the first sub-connecting groove (81), and the extension direction of at least another fourth recess (90) is arranged at a fourth angle A4 with the extension direction of the third sub-connecting groove (83), and the third angle A3 and the fourth angle A4 satisfy: 45°≤A3≤55°, 45°≤A4≤55°; A fifth recess (100) is arranged on the central tread portion (40), one end of the fifth recess (100) extends to a side surface of the central tread portion (40), a preset distance is provided between the other end of the fifth recess (100) and the other side surface of the central tread portion (40), and a sixth angle A6 is formed between an extension direction of the fifth recess (100) and an extension direction of the longitudinal groove (10), and the sixth angle A6 satisfies: 55°≤A6≤65°; There are a plurality of first connecting grooves (80), and the plurality of first connecting grooves (80) are arranged at intervals along the circumference of the tire to separate the central tread portion (40) into a plurality of central tread blocks (41), and the central tread block (41) is provided with at least two of the fifth recesses (100).

7. The tire tread structure according to claim 6, characterized in that: The tire tread structure further comprises: A second connecting groove (110) is arranged on the crown pattern portion (50) to connect the longitudinal grooves (10) located on both sides of the crown pattern portion (50), the second connecting groove (110) comprising a fourth sub-connecting groove (111) and a fifth sub-connecting groove (112) which are connected to each other, the fourth sub-connecting groove (111) being arranged close to the central pattern portion (40); wherein the second connecting groove (110) is a plurality of the plurality of the second connecting grooves (110), and the plurality of the second connecting grooves (110) are arranged at intervals along the circumferential direction of the tire to separate the crown pattern portion (50) into a plurality of crown pattern blocks (51); A sixth recess (120) is arranged on the crown pattern block (51), one end of the sixth recess (120) extends to the inner wall of the second connecting groove (110), the other end of the sixth recess (120) is at a preset distance from the side surface of the crown pattern portion (50), and the extension direction of the sixth recess (120) and the extension direction of the fourth sub-connecting groove (111) form a seventh angle A7, and the seventh angle A7 satisfies: 35°≤A7≤45°; A seventh recess (130) is arranged on the crown pattern block (51), two ends of the seventh recess (130) respectively extend to two side surfaces of the crown pattern block (51), an extension direction of the seventh recess (130) and an extension direction of the longitudinal groove (10) form an eighth angle A8, and the eighth angle A8 satisfies: 95°≤A8≤105°; An eighth recess (140) is arranged on the crown pattern block (51), the eighth recess (140) is located between the seventh recess (130) and the second connecting groove (110), one end of the eighth recess (140) extends to a side surface of the crown pattern block (51), and a preset distance is provided between the other end of the eighth recess (140) and the other side surface of the crown pattern block (51), and an extension direction of the eighth recess (140) and an extension direction of the longitudinal groove (10) form a ninth angle A9, and the ninth angle A9 satisfies: 95°≤A9≤105°.

8. The tire tread structure according to claim 7, characterized in that: The plurality of shoulder pattern blocks (21) are arranged in one-to-one correspondence with the plurality of center pattern blocks (41), and the plurality of shoulder pattern blocks (21) are arranged in one-to-one correspondence with the plurality of crown pattern blocks (51). The shoulder pattern blocks (21) and the corresponding center pattern blocks (41) and the crown pattern blocks (51) form a pattern group, and the pattern group has a length L; Wherein, in one of the pattern groups, the width W6 of the first recess (30), the width W7 of the first connecting groove (80), the width W8 of the second connecting groove (110) and the length L satisfy: 0.12L≤W6≤014L, 0.05L≤W7≤0.07L, 0.08L≤W8≤0.11L.

9. The tire tread structure according to claim 8, characterized in that: There are multiple pattern groups, including 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 the following conditions: L1<L2<L3, 1.1L2≤L3≤1.2L2, 1.1L1≤L2≤1.2L1; and / or, The tire tread structure further comprises a protrusion (150), wherein the protrusion (150) is arranged on the bottom wall of the first connecting groove (80), and a height H1 of the protrusion (150) satisfies: 1.8 mm≤H1≤2.2 mm.

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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