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 extending 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; the tire shoulder pattern part close to the outer side of the tire is an outer side tire shoulder pattern part, the tire shoulder pattern part close to the inner side of the tire is an inner side tire shoulder pattern part, and the width W1 of the outer side tire shoulder pattern part and the width W2 of the inner side tire shoulder pattern part meet the condition that W1 is larger than W2; the first concave part is arranged on the outer side tire shoulder pattern part, the first concave part is provided with a diameter expanding section and a diameter reducing section which are sequentially arranged in the direction from the central plane S of the tire to the outer side of the tire, the width of the diameter expanding section is gradually increased, and the width of the diameter reducing section is gradually reduced. The racing car tire effectively solves the problem that a racing car tire in the prior art cannot give consideration to the road condition of a racing car lane and the road condition of a conventional road.

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, as the only contact part between the vehicle and the driving surface, the tread pattern structure of the tire not only affects the performance of the tire itself (such as wear resistance, noise reduction performance, etc.), but also affects the driving performance of the vehicle (such as handling performance, safety performance, etc.).

[0003] In the prior art, the tread pattern structure of racing tires usually only focuses on the high handling requirements of the racing car due to the special driving characteristics of the racing car itself (high speed driving) and the special road conditions of the racing lanes (highly flat).

[0004] However, in some competitions (road rallies) or training, racing cars also need to run on regular road tracks (with lower flatness). At this time, racing tires will expose obvious disadvantages, especially the poor anti-eccentric wear performance of traditional racing tires. Conventional road surfaces will cause the outer tread of racing tires to wear quickly, which will seriously affect the service life of the tires. Utility Model Content

[0005] 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 that the racing tire in the prior art cannot take into account both the racing car road condition and the conventional highway road condition.

[0006] 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 shoulder pattern portion close to the outer side of the tire is the outer shoulder pattern portion, and the shoulder pattern portion close to the inner side of the tire is the inner shoulder pattern portion, and the width W1 of the outer shoulder pattern portion and the width W2 of the inner shoulder pattern portion satisfy: W1>W2; a first recessed portion is arranged on the outer shoulder pattern portion, and in the direction from the center plane S of the tire to the outer side of the tire, the first recessed portion has an expanding diameter section and a reducing diameter section arranged in sequence, and the width W3 of the expanding diameter section gradually increases, and the width W4 of the reducing diameter section gradually decreases.

[0007] Furthermore, the plurality of longitudinal grooves include: a first longitudinal groove, located on the side of the center plane S of the tire close to the outer side of the tire; at least two second longitudinal grooves, at least two second longitudinal grooves are both located on the side of the center plane S of the tire close to the inner side of the tire; wherein the width W5 of the first longitudinal groove and the width W6 of the second longitudinal groove satisfy: W5<W6.

[0008] Furthermore, the tire tread structure also includes: a second recess, which is arranged on the groove wall of the first longitudinal groove; and / or, which is arranged on the inner wall of the first recess, and the second recess extends to the tread; wherein the second recess includes a first sub-recess and a second sub-recess that are interconnected, and along the direction from the first sub-recess to the second sub-recess, the width W7 of the first sub-recess gradually increases, the depth of the first sub-recess gradually increases, and along the direction from the tread to the bottom wall of the first longitudinal groove, the width W7 gradually decreases; along the direction from the second sub-recess to the first sub-recess, the width W8 of the second sub-recess gradually increases, the depth of the second sub-recess gradually increases, and along the direction from the tread to the bottom wall of the first longitudinal groove, the width W8 gradually decreases.

[0009] Furthermore, a plurality of second recesses are arranged on the groove walls on both sides of the first longitudinal groove, and the plurality of second recesses located on the groove wall on one side of the first longitudinal groove are arranged one-to-one correspondingly to the plurality of second recesses located on the groove wall on the other side of the first longitudinal groove; wherein, along the circumferential direction of the tire, the arrangement directions of the second recesses located on the groove wall on one side of the first longitudinal groove and the second recesses arranged correspondingly thereto are opposite; and / or, the first recess is arranged in a polygonal shape, and in two adjacent inner walls of the first recess, the first sub-recess is arranged on one inner wall, and the second sub-recess is arranged on the other inner wall.

[0010] Furthermore, the multiple intermediate pattern portions include: a center pattern portion, at least a portion of the center pattern portion coincides with the center plane S; a crown pattern portion, located between the center pattern portion and the inner shoulder pattern portion; wherein the tire tread structure also includes a fourth recessed portion arranged on the center pattern portion, one end of the fourth recessed portion extends to the side surface of the center pattern portion close to the inner side of the tire, and the other end of the fourth recessed portion has a preset distance from the side surface of the center pattern portion close to the outer side of the tire; in the direction from the center plane S to the outer side of the tire, the width of the fourth recessed portion gradually decreases.

[0011] Furthermore, the tire tread structure also includes: a connecting groove, which is arranged on the crown pattern portion, and is used to connect the longitudinal grooves located on both sides of the crown pattern portion; wherein, in the direction from the center plane S to the outer side of the tire, the width of the connecting groove gradually increases.

[0012] Furthermore, the tire tread structure also includes: a fifth recess, which is arranged on the inner shoulder pattern portion, one end of the fifth recess extends to the side surface of the inner shoulder pattern portion close to the inner side of the tire, and the other end of the fifth recess has a preset distance from the side surface of the inner shoulder pattern portion close to the outer side of the tire; wherein, in the direction from the center plane S to the outer side of the tire, the width of at least part of the fifth recess gradually decreases; and / or, the fifth recess includes a third sub-recess and a fourth sub-recess that are interconnected, the third sub-recess is arranged close to the center plane S relative to the fourth sub-recess, and the depth H1 of the third sub-recess and the depth H2 of the fourth sub-recess satisfy: 1mm≤H2-H1≤3mm.

[0013] Furthermore, there are multiple first recesses, which are spaced apart along the circumference of the tire to separate the outer shoulder pattern portion into multiple outer shoulder pattern blocks; there are multiple connecting grooves, which are spaced apart along the circumference of the tire to separate the crown pattern portion into multiple crown pattern blocks; there are multiple fifth recesses, which are spaced apart along the circumference of the tire to separate the inner shoulder pattern portion into multiple inner shoulder pattern blocks; wherein, the multiple outer shoulder pattern blocks are arranged in one-to-one correspondence with the multiple crown pattern blocks, each outer shoulder pattern block is arranged in correspondence with at least two inner shoulder pattern blocks, and the outer shoulder pattern block and the corresponding crown pattern block and the inner shoulder pattern block form a pattern group, and there are at least five pattern groups, and the lengths L of the at least five pattern groups are different.

[0014] Furthermore, the tire tread structure also includes: a sixth recess, at least one sixth recess is arranged on the outer shoulder pattern block, and the width W7 of the sixth recess gradually decreases along the center plane S to the outer side of the tire; and / or, a protrusion is arranged on the bottom wall of the connecting groove.

[0015] According to another aspect of the utility model, a tire is provided, the tire comprising the above tire tread structure.

[0016] According to the technical solution of the utility model, the plurality of longitudinal grooves of the tire tread structure extend along the circumference of the tire, and 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 shoulder pattern portion close to the outer side of the tire is the outer shoulder pattern portion, and the shoulder pattern portion close to the inner side of the tire is the inner shoulder pattern portion. The width W1 of the outer shoulder pattern portion and the width W2 of the inner shoulder pattern portion satisfy: W1>W2. The first recess is arranged on the outer shoulder pattern portion. In the direction from the center plane S of the tire to the outer side of the tire, the first recess has an enlarged diameter section and a reduced diameter section arranged in sequence. The width W3 of the enlarged diameter section gradually increases, and the width W4 of the reduced diameter section gradually decreases. In this way, during the driving process of the vehicle (especially during the turning process), the outer shoulder pattern portion with a larger width can increase the contact area of ​​the tire in the extreme motion state, so as to maximize the lateral grip of the tire, thereby improving the handling performance of the tire and ensuring that the tire can better adapt to the road conditions of the racing car. At the same time, the above-mentioned setting of the first recess enables the rigid part of the outer shoulder pattern portion along the tire width direction to match the stress condition of the tire in an extreme motion state, thereby improving the tire's anti-eccentric wear performance and ensuring that the tire can better adapt to road conditions, thereby solving the problem that racing tires in the prior art cannot take into account both racing car road conditions and conventional road conditions, and extending the service life of the tire. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

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

[0019] Figure 2 Shows Figure 1 An enlarged schematic diagram of the tire tread structure at point B in FIG.

[0020] Figure 3 Shows Figure 1 An enlarged schematic diagram of a first concave portion of a tire tread structure;

[0021] Figure 4 Shows Figure 2 A cross-sectional schematic diagram of the second concave portion in FIG.

[0022] Figure 5 Shows Figure 1 A schematic cross-sectional view of a first concave portion of a tire tread structure;

[0023] Figure 6 Shows Figure 1 A schematic cross-sectional view of the connecting grooves of the tire tread structure;

[0024] Figure 7 Shows Figure 1 Schematic cross-sectional view of the fifth concave portion of the tire tread structure.

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

[0026] 10. Longitudinal groove; 11. First longitudinal groove; 12. Second longitudinal groove; 20. Shoulder pattern portion; 21. Outer shoulder pattern portion; 211. Outer shoulder pattern block; 22. Inner shoulder pattern portion; 221. Inner shoulder pattern block; 30. First recess; 31. Expanded diameter section; 32. Reduced diameter section; 40. Second recess; 41. First sub-recess; 42. Second sub-recess; 50. Center pattern portion; 60. Crown pattern portion; 61. Crown pattern block; 70. Fourth recess; 80. Connecting groove; 90. Fifth recess; 91. Third sub-recess; 92. Fourth sub-recess; 100. Sixth recess; 110. Protrusion. DETAILED DESCRIPTION

[0027] 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.

[0028] 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.

[0029] 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.

[0030] In order to solve the problem that the racing tires in the prior art cannot take into account both racing lane road conditions and conventional highway road conditions, the present application provides a tire tread structure and a tire having the same.

[0031] like Figures 1 to 7As shown, the tire tread structure includes a plurality of longitudinal grooves 10 and a first recess 30, each of which extends along the circumference of the tire. The plurality of longitudinal grooves 10 are arranged at intervals along the width direction of the tire to separate the tread into a shoulder pattern portion and a plurality of intermediate pattern portions located between the two shoulder pattern portions. The shoulder pattern portion close to the outer side of the tire is the outer shoulder pattern portion 21, and the shoulder pattern portion close to the inner side of the tire is the inner shoulder pattern portion 22. The width W1 of the outer shoulder pattern portion 21 and the width W2 of the inner shoulder pattern portion 22 satisfy: W1>W2. The first recess 30 is arranged on the outer shoulder pattern portion 21. In the direction from the center plane S of the tire to the outer side of the tire, the first recess 30 has an enlarged diameter section 31 and a reduced diameter section 32 arranged in sequence. The width W3 of the enlarged diameter section 31 gradually increases, and the width W4 of the reduced diameter section 32 gradually decreases.

[0032] By applying the technical solution of this embodiment, the multiple longitudinal grooves 10 of the tire tread structure all extend along the circumference of the tire, and the multiple longitudinal grooves 10 are arranged at intervals along the width direction of the tire to separate the tread into a shoulder pattern portion and a plurality of intermediate pattern portions located between the two shoulder pattern portions. The shoulder pattern portion close to the outer side of the tire is the outer shoulder pattern portion 21, and the shoulder pattern portion close to the inner side of the tire is the inner shoulder pattern portion 22. The width W1 of the outer shoulder pattern portion 21 and the width W2 of the inner shoulder pattern portion 22 satisfy: W1>W2. The first recess 30 is arranged on the outer shoulder pattern portion 21. In the direction from the center plane S of the tire to the outer side of the tire, the first recess 30 has an expanding section 31 and a reducing section 32 arranged in sequence, and the width W3 of the expanding section 31 gradually increases, and the width W4 of the reducing section 32 gradually decreases. In this way, during the driving process of the vehicle (especially during the turning process), the outer shoulder pattern portion 21 with a larger width can increase the contact area of ​​the tire in the extreme motion state, so as to maximize the lateral grip of the tire, thereby improving the handling performance of the tire and ensuring that the tire can better adapt to the racing track conditions. At the same time, the above-mentioned setting of the first recess 30 enables the rigid part of the outer shoulder pattern portion 21 along the tire width direction to match the stress condition of the tire in the extreme motion state, thereby improving the tire's anti-eccentric wear performance and ensuring that the tire can better adapt to the road conditions of the highway, thereby solving the problem that the racing tire in the prior art cannot take into account both the racing track conditions and the conventional road conditions, and prolonging the service life of the tire.

[0033] In this embodiment, the actual widths of the outer shoulder pattern portion 21, the inner shoulder pattern portion 22 and the middle pattern portion are calculated by software simulation, which reasonably distributes the overall rigidity of the tire pattern structure, makes the tire contact pressure more uniform, and further improves the tire's wear resistance, handling, safety and quietness.

[0034] Specifically, an asymmetrical design is actually adopted between the outer shoulder pattern portion 21, the inner shoulder pattern portion 22 and the middle pattern portion. During the turning process of the vehicle, the outer shoulder pattern portion 21 serves as the main force-bearing area between the tire and the ground. The wider design makes the tire have greater lateral grip, thereby improving the tire's dry handling performance.

[0035] Optionally, the plurality of longitudinal grooves 10 include a first longitudinal groove 11 and at least two second longitudinal grooves 12, wherein the first longitudinal groove 11 is located on the side of the center plane S of the tire close to the outer side of the tire. At least two second longitudinal grooves 12 are both located on the side of the center plane S of the tire close to the inner side of the tire. Among them, the width W5 of the first longitudinal groove 11 and the width W6 of the second longitudinal groove 12 satisfy: W5<W6. In this way, the width setting of the second longitudinal groove 12 makes the second longitudinal groove 12 have better drainage performance than the first longitudinal groove 11, and the number setting and position setting of the second longitudinal groove 12 make the inner part of the tire have better drainage performance, so as to adapt to the liquid easy to gather area (i.e. the inner side of the tire) when the tire is driving on a slippery road, and to avoid the formation of a complete water film between the tread and the driving surface to the greatest extent, which causes the tire to slip, thereby improving the driving safety of the driver.

[0036] In this embodiment, the second longitudinal grooves 12 are longitudinal straight grooves.

[0037] In the present embodiment, there is one first longitudinal groove 11 and two second longitudinal grooves 12, that is, the tire tread structure in the present embodiment has only three longitudinal grooves 10. Compared with the four or five longitudinal grooves of the traditional tire tread structure, the pattern saturation of the tire tread structure in the present embodiment can be improved by about ten percent, which gives the tire better safety and wear resistance while ensuring that the tire has excellent track traction performance and dry handling performance.

[0038] Optionally, the tire tread structure further includes a second recess 40, which is arranged on the groove wall of the first longitudinal groove 11; and / or, is arranged on the inner wall of the first recess 30, and the second recess 40 extends to the tread. Wherein, the second recess 40 includes a first sub-recess 41 and a second sub-recess 42 that are connected to each other, and the width W7 of the first sub-recess 41 gradually increases along the direction from the first sub-recess 41 to the second sub-recess 42, and the depth of the first sub-recess 41 gradually increases, and the width W7 gradually decreases along the tread to the bottom wall of the first longitudinal groove 11. Along the direction from the second sub-recess 42 to the first sub-recess 41, the width W8 of the second sub-recess 42 gradually increases, the depth of the second sub-recess 42 gradually increases, and the width W8 gradually decreases along the tread to the bottom wall of the first longitudinal groove 11. In this way, the second recess 40 is actually a diamond-shaped cut angle. On the one hand, the second recess 40 can increase the contact area between the tire pattern structure and the driving surface, thereby improving the dry handling and traction of the tire; on the other hand, it makes the pattern portion provided with the second recess 40 more beautiful, thereby improving the aesthetics of the tire. At the same time, the above arrangement makes the arrangement position of the second recess 40 more flexible and diverse to adapt to different working conditions and usage requirements, and also improves the processing flexibility of the staff.

[0039] Optionally, a plurality of second recesses 40 are arranged on both sides of the groove wall of the first longitudinal groove 11, and the plurality of second recesses 40 located on one side of the groove wall of the first longitudinal groove 11 are arranged one by one with the plurality of second recesses 40 located on the other side of the groove wall of the first longitudinal groove 11. Wherein, along the circumferential direction of the tire, the arrangement direction of the second recesses 40 located on one side of the groove wall of the first longitudinal groove 11 and the second recesses 40 arranged corresponding thereto are opposite; and / or, the first recess 30 is arranged in a polygonal shape, and in the two adjacent inner walls of the first recess 30, the first sub-recess 41 is arranged on one inner wall, and the second sub-recess 42 is arranged on the other inner wall. In this way, the above-mentioned arrangement of the first longitudinal groove 11, on the one hand, enables the area of ​​the pattern parts located on both sides of the first longitudinal groove 11 to be increased, so as to further increase the contact area between the tire pattern structure and the driving surface; on the other hand, the first longitudinal groove 11 is in a lightning shape as a whole, which further improves the appearance, handling and braking performance of the tire. At the same time, the second recess 40 located on the inner wall of the first recess 30 can increase the contact area between the first recess 30 and the running surface.

[0040] In this embodiment, a plurality of second recesses 40 are disposed on both side walls of the first longitudinal groove 11 .

[0041] In this embodiment, a second recess is also provided on the inner wall of the first recess 30 .

[0042] In this embodiment, the first recess 30 is arranged in a triangular shape.

[0043] like Figure 5 As shown, a chamfer is provided at the connection between the bottom wall and the side wall of the first recess 30, and a first angle A1 is provided between the side wall of the first recess 30 and the normal line of the first recess 30, and the first angle A1 is 3°.

[0044] Specifically, the first recess 30 is an elongated triangle, half of the first recess 30 forms an expanded diameter section 31, and the other half of the first recess 30 forms a reduced diameter section 32. In this way, the above arrangement enables the first recess 30 to irregularly adjust the rigidity of the outer shoulder pattern portion 21 along the width direction of the tire to adapt to the actual stress state of the outer shoulder pattern portion 21 during the rolling process of the tire, thereby improving the handling, traction and wear resistance of the tire.

[0045] like Figure 1 As shown, the plurality of intermediate pattern portions include a central pattern portion 50 and a crown pattern portion 60, and at least part of the central pattern portion 50 coincides with the central plane S. The crown pattern portion 60 is located between the central pattern portion 50 and the inner shoulder pattern portion 22. The tire tread structure further includes a fourth recess 70 disposed on the central pattern portion 50, one end of the fourth recess 70 extends to the side of the central pattern portion 50 close to the inner side of the tire, and the other end of the fourth recess 70 is at a preset distance from the side of the central pattern portion 50 close to the outer side of the tire. The width of the fourth recess 70 gradually decreases in the direction from the central plane S to the outer side of the tire. In this way, the fourth recess 70 disposed on the central pattern portion 50 can cut the water film between the tire tread and the driving surface during the rolling process of the tire, thereby improving the ability of the tire to cut the water film, and further improving the anti-wet skid performance and dry traction performance of the tire.

[0046] In this embodiment, the fourth recess 70 is actually a V-shaped notch.

[0047] like Figure 1 As shown, the tire tread structure also includes a connecting groove 80, which is arranged on the crown pattern portion 60, and the connecting groove 80 is used to connect the longitudinal grooves 10 located on both sides of the crown pattern portion 60. Among them, the width of the connecting groove 80 gradually increases in the direction from the center plane S to the outer side of the tire. In this way, the liquid in the longitudinal groove 10 can flow into the adjacent longitudinal groove 10 through the connecting groove 80, further improving the drainage performance of the tire. At the same time, the above-mentioned setting of the connecting groove 80 can not only adapt to the flow direction of the liquid to increase the flow speed of the liquid, but also can cut the water film between the tire tread and the driving surface through its edge, thereby improving the anti-skid performance and handling of the tire.

[0048] Optionally, the tire tread structure further includes a fifth recess 90, which is arranged on the inner shoulder pattern portion 22, one end of the fifth recess 90 extends to the side of the inner shoulder pattern portion 22 close to the inner side of the tire, and the other end of the fifth recess 90 is at a preset distance from the side of the inner shoulder pattern portion 22 close to the outer side of the tire. Wherein, in the direction from the center plane S to the outer side of the tire, the width of at least part of the fifth recess 90 gradually decreases; and / or, the fifth recess 90 includes a third sub-recess 91 and a fourth sub-recess 92 that are interconnected, the third sub-recess 91 is arranged close to the center plane S relative to the fourth sub-recess 92, and the depth H1 of the third sub-recess 91 and the depth H2 of the fourth sub-recess 92 satisfy: 1mm≤H2-H1≤3mm. In this way, the fifth recess 90 actually adopts a design of variable width and depth, which can, on the one hand, improve the drainage performance and anti-skid performance of the tire (the edge of the fifth recess 90 can also cut the water film between the tire tread and the driving surface); on the other hand, it can disrupt the noise propagation direction in the fifth recess 90 and reduce the driving noise of the tire.

[0049] In this embodiment, in a direction from the center plane S to the outer side of the tire, the width of at least a portion of the fifth recessed portion 90 gradually decreases.

[0050] In this embodiment, the fifth recess 90 includes a third sub-recess 91 and a fourth sub-recess 92 which are interconnected. The third sub-recess 91 is arranged close to the center plane S relative to the fourth sub-recess 92. The depth H1 of the third sub-recess 91 and the depth H2 of the fourth sub-recess 92 satisfy: 1mm≤H2-H1≤3mm.

[0051] In this embodiment, the depth H1 of the third sub-recess 91 and the depth H2 of the fourth sub-recess 92 satisfy: H2 − H1 = 2 mm.

[0052] Optionally, there are a plurality of first recesses 30, which are spaced apart along the circumferential direction of the tire to separate the outer shoulder pattern portion 21 into a plurality of outer shoulder pattern blocks 211. There are a plurality of connecting grooves 80, which are spaced apart along the circumferential direction of the tire to separate the crown pattern portion 60 into a plurality of crown pattern blocks 61. There are a plurality of fifth recesses 90, which are spaced apart along the circumferential direction of the tire to separate the inner shoulder pattern portion 22 into a plurality of inner shoulder pattern blocks 221. Among them, multiple outer shoulder pattern blocks 211 are arranged in one-to-one correspondence with multiple crown pattern blocks 61, and each outer shoulder pattern block 211 is arranged in correspondence with at least two inner shoulder pattern blocks 221. The outer shoulder pattern blocks 211 and the corresponding crown pattern blocks 61 and inner shoulder pattern blocks 221 form a pattern group, and there are at least five pattern groups, and the lengths L of at least five pattern groups are different. The five pattern groups with different lengths L make the arrangement of the tire tread structure in the circumferential direction of the tire more chaotic, which minimizes the probability of resonance between each pattern group, thereby reducing the driving noise of the tire. At the same time, within a pattern group, the corresponding setting method between each pattern block makes the structure of a single pattern group more complex, thereby avoiding the probability of resonance between each pattern block, and further reducing the driving noise of the tire.

[0053] In this embodiment, the length L is actually the pitch of the tire, that is, the tire tread structure in this embodiment adopts a five-pitch design, and five pattern groups with different pitches are randomly arranged along the circumference of the tire through software simulation.

[0054] In this embodiment, each outer shoulder pattern block 211 is arranged corresponding to two inner shoulder pattern blocks 221, that is, each crown pattern block 61 is arranged corresponding to two inner shoulder pattern blocks 221, so as to further reduce the driving noise of the tire.

[0055] In this embodiment, within a pattern group, there is a preset offset between two adjacent pattern blocks along the circumferential direction of the tire, so that a pattern group is arranged in an inclined shape along the width direction of the tire to further reduce the driving noise of the tire.

[0056] Specifically, the tire tread structure in this embodiment actually adopts a variety of design methods to reduce the driving noise of the tire, thereby ensuring that the tire also has a smaller driving noise when driving on a regular road, thereby ensuring that the racing tire can take into account the road conditions on the road (i.e., avoid excessive noise that exceeds the requirements for driving in urban areas).

[0057] Optionally, the tire tread structure further includes a sixth recess 100 and a protrusion 110, and at least one sixth recess 100 is provided on the outer shoulder pattern block 211, and the width W7 of the sixth recess 100 gradually decreases in the direction from the center plane S to the outer side of the tire. The protrusion 110 is provided on the bottom wall of the connecting groove 80. In this way, the above-mentioned arrangement of the sixth recess 100 can further optimize the rigidity of the outer shoulder pattern portion 21 to improve the ground contact footprint of the tire, further improve the anti-eccentric wear performance of the tire and the coordination between the pattern portions, and extend the service life of the tire. At the same time, the protrusion 110 can balance the rigidity between the inner and outer sides of the tire tread structure, and further improve the anti-eccentric wear performance of the tire.

[0058] In this embodiment, the sixth recess 100 is arranged in a triangular shape.

[0059] In this embodiment, there are multiple sixth recesses 100 , and one sixth recess 100 is disposed between each of two adjacent first recesses 30 .

[0060] In this embodiment, the protrusion 110 is a trapezoidal boss structure.

[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 plurality of longitudinal grooves of the tire tread structure all 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 shoulder pattern portion close to the outer side of the tire is the outer shoulder pattern portion, and the shoulder pattern portion close to the inner side of the tire is the inner shoulder pattern portion. The width W1 of the outer shoulder pattern portion and the width W2 of the inner shoulder pattern portion satisfy: W1>W2. The first recess is arranged on the outer shoulder pattern portion. In the direction from the center plane S of the tire to the outer side of the tire, the first recess has an enlarged diameter section and a reduced diameter section arranged in sequence. The width W3 of the enlarged diameter section gradually increases, and the width W4 of the reduced diameter section gradually decreases. In this way, during the driving process of the vehicle (especially during the turning process), the outer shoulder pattern portion with a larger width can increase the contact area of ​​the tire in an extreme motion state, so as to maximize the lateral grip of the tire, thereby improving the handling performance of the tire and ensuring that the tire can better adapt to the road conditions of the racing track. At the same time, the above-mentioned setting of the first recess enables the rigid part of the outer shoulder pattern portion along the tire width direction to match the stress condition of the tire in an extreme motion state, thereby improving the tire's anti-eccentric wear performance and ensuring that the tire can better adapt to road conditions, thereby solving the problem that racing tires in the prior art cannot take into account both racing car road conditions and conventional road conditions, and extending the service life of the tire.

[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 and a plurality of intermediate pattern portions located between the two shoulder pattern portions; The shoulder pattern portion close to the outer side of the tire is an outer shoulder pattern portion (21), and the shoulder pattern portion close to the inner side of the tire is an inner shoulder pattern portion (22), and the width W1 of the outer shoulder pattern portion (21) and the width W2 of the inner shoulder pattern portion (22) satisfy: W1>W2; The first recess (30) is arranged on the outer shoulder pattern portion (21), and in the direction from the center plane S of the tire to the outer side of the tire, the first recess (30) has an expanding section (31) and a reducing section (32) arranged in sequence, the width W3 of the expanding section (31) gradually increases, and the width W4 of the reducing section (32) gradually decreases.

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 located on a side of the center plane S of the tire close to the outer side of the tire; At least two second longitudinal grooves (12), wherein at least two of the second longitudinal grooves (12) are both located on a side of a center plane S of the tire close to an inner side of the tire; Wherein, the width W5 of the first longitudinal groove (11) and the width W6 of the second longitudinal groove (12) satisfy: W5<W6.

3. The tire tread structure according to claim 2, characterized in that: The tire tread structure further comprises: a second recess (40) disposed on the groove wall of the first longitudinal groove (11); and / or disposed on the inner wall of the first recess (30), the second recess (40) extending to the tread; The second recess (40) includes a first sub-recess (41) and a second sub-recess (42) which are interconnected. In the direction from the first sub-recess (41) to the second sub-recess (42), the width W7 of the first sub-recess (41) gradually increases, the depth of the first sub-recess (41) gradually increases, and the width W7 gradually decreases from the tread to the bottom wall of the first longitudinal groove (11); in the direction from the second sub-recess (42) to the first sub-recess (41), the width W8 of the second sub-recess (42) gradually increases, the depth of the second sub-recess (42) gradually increases, and the width W8 gradually decreases from the tread to the bottom wall of the first longitudinal groove (11).

4. The tire tread structure according to claim 3, characterized in that: A plurality of second recesses (40) are arranged on both side groove walls of the first longitudinal groove (11), and the plurality of second recesses (40) located on one side groove wall of the first longitudinal groove (11) are arranged one-to-one with the plurality of second recesses (40) located on the other side groove wall of the first longitudinal groove (11); wherein, along the circumferential direction of the tire, the second recesses (40) located on one side groove wall of the first longitudinal groove (11) and the second recesses (40) arranged corresponding thereto are arranged in opposite directions; and / or, The first recess (30) is arranged in a polygonal shape. In two adjacent inner walls of the first recess (30), the first sub-recess (41) is arranged on one inner wall, and the second sub-recess (42) is arranged on the other inner wall.

5. The tire tread structure according to claim 1, characterized in that: The plurality of intermediate pattern portions include: A central tread portion (50), at least a portion of the central tread portion (50) coincides with the central plane S; A crown tread portion (60) located between the center tread portion (50) and the inner shoulder tread portion (22); The tire tread structure further comprises a fourth recess (70) arranged on the central tread portion (50), one end of the fourth recess (70) extends to the side surface of the central tread portion (50) close to the inner side of the tire, and the other end of the fourth recess (70) is at a preset distance from the side surface of the central tread portion (50) close to the outer side of the tire; and the width of the fourth recess (70) gradually decreases in the direction from the central plane S to the outer side of the tire.

6. The tire tread structure according to claim 5, characterized in that: The tire tread structure further comprises: A connecting groove (80) is provided on the tread crown pattern portion (60), and the connecting groove (80) is used to connect the longitudinal grooves (10) located on both sides of the tread crown pattern portion (60); Wherein, in the direction from the center plane S to the outer side of the tire, the width of the connecting groove (80) gradually increases.

7. The tire tread structure according to claim 6, characterized in that: The tire tread structure further comprises: A fifth recess (90) is arranged on the inner shoulder pattern portion (22), one end of the fifth recess (90) extends to the side surface of the inner shoulder pattern portion (22) close to the inner side of the tire, and a preset distance is formed between the other end of the fifth recess (90) and the side surface of the inner shoulder pattern portion (22) close to the outer side of the tire; Wherein, in the direction from the center plane S to the outer side of the tire, the width of at least part of the fifth recess (90) gradually decreases; and / or, The fifth recess (90) comprises a third sub-recess (91) and a fourth sub-recess (92) which are interconnected, the third sub-recess (91) being arranged close to the center plane S relative to the fourth sub-recess (92), and the depth H1 of the third sub-recess (91) and the depth H2 of the fourth sub-recess (92) satisfying the condition: 1mm≤H2-H1≤3mm.

8. The tire tread structure according to claim 7, characterized in that: There are a plurality of the first recesses (30), and the plurality of the first recesses (30) are arranged at intervals along the circumferential direction of the tire so as to separate the outer shoulder pattern portion (21) into a plurality of outer shoulder pattern blocks (211); There are a plurality of the connecting grooves (80), and the plurality of connecting grooves (80) are arranged at intervals along the circumferential direction of the tire to separate the crown pattern portion (60) into a plurality of crown pattern blocks (61); There are a plurality of the fifth recesses (90), and the plurality of the fifth recesses (90) are arranged at intervals along the circumferential direction of the tire to separate the inner shoulder pattern portion (22) into a plurality of inner shoulder pattern blocks (221); The plurality of outer shoulder pattern blocks (211) and the plurality of crown pattern blocks (61) are arranged in one-to-one correspondence, each of the outer shoulder pattern blocks (211) is arranged in correspondence with at least two inner shoulder pattern blocks (221), the outer shoulder pattern blocks (211) and the corresponding crown pattern blocks (61) and the inner shoulder pattern blocks (221) form a pattern group, the number of the pattern groups is at least five, and the lengths L of the at least five pattern groups are different from each other.

9. The tire tread structure according to claim 8, characterized in that: The tire tread structure further comprises: A sixth recess (100), wherein at least one sixth recess (100) is provided on the outer shoulder pattern block (211), and a width W7 of the sixth recess (100) gradually decreases in a direction from the center plane S to the outer side of the tire; and / or, The protrusion (110) is arranged on the bottom wall of the connecting groove (80).

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

Images