tire

Abstract

This invention provides a tire with a tread pattern. Multiple longitudinal grooves in the tread pattern are spaced apart along the width of the tire, dividing the tread into two shoulder tread portions and a central tread portion between the two shoulder tread portions. Groove structures are provided on the central tread portion, each groove including a first recess and a first sipe that are interconnected. The end of the first recess away from the first sipe extends into a longitudinal groove on one side of the central tread portion, and the end of the first sipe away from the first recess extends into a longitudinal groove on the other side of the central tread portion. The extension direction of the first recess forms a first angle A1 with the first sipe. Multiple groove structures are spaced apart along the circumference of the tire, and the first recesses of adjacent groove structures are connected to different longitudinal grooves. This invention effectively solves the problem in the prior art where tires cannot simultaneously meet the requirements of handling and comfort.

Description

Technical Field

[0001] This utility model relates to the field of tire technology, and more specifically, to a tire. Background Technology

[0002] Currently, tires are the only key component of a car that comes into contact with the ground, performing multiple important functions during vehicle operation. Through friction with the road surface, they provide driving force, braking force, and steering control, and work in conjunction with the suspension system to absorb road vibrations, ensuring ride stability and ride comfort. Simultaneously, the air pressure inside the tire plays a crucial role in supporting the weight of the entire vehicle. Therefore, tires directly affect a vehicle's driving safety, fuel economy, and driving comfort.

[0003] In existing technologies, manufacturers typically design different types of tire tread patterns to achieve corresponding tire handling and comfort.

[0004] However, while existing tire tread patterns improve tire handling in wet conditions, they also increase tire noise, making it impossible for tires to balance the requirements of handling and comfort. Utility Model Content

[0005] The main objective of this invention is to provide a tire that solves the problem that existing tires cannot simultaneously meet the requirements of handling and comfort.

[0006] To achieve the above objectives, this utility model provides a tire with a tread pattern structure on its tread surface. The tread pattern structure includes: longitudinal grooves extending circumferentially along the tire, with multiple longitudinal grooves spaced apart along the width of the tire to divide the tread into two shoulder tread portions and a central tread portion located between the two shoulder tread portions; and a groove structure disposed on the central tread portion, the groove structure including a first recess and a first sipe that are interconnected. The end of the first recess away from the first sipe extends into a longitudinal groove located on one side of the central tread portion to communicate with the longitudinal groove, and the end of the first sipe away from the first recess extends into a longitudinal groove located on the other side of the central tread portion to communicate with the longitudinal groove. The extension direction of the first recess and the first sipe are set at a first angle A1. The groove structure comprises multiple grooves spaced apart circumferentially along the tire, and the first recesses of two adjacent groove structures are respectively connected to different longitudinal grooves.

[0007] Furthermore, the first cutting groove includes a first sub-cutting groove and a second sub-cutting groove that are interconnected. The second sub-cutting groove is located between the first recess and the first sub-cutting groove, and the first sub-cutting groove is connected to the longitudinal groove. The first sub-cutting groove and the second sub-cutting groove are arranged at a second included angle A2.

[0008] Furthermore, the tread pattern also includes: a lateral groove, which is provided on the tire shoulder tread section. One end of the lateral groove is connected to the longitudinal groove, and the other end of the lateral groove extends to the tire shoulder. The lateral groove is set at a third angle A3 with respect to the width direction of the tire, and the third angle A3 satisfies: 11°≤A3≤13°.

[0009] Furthermore, there are multiple lateral grooves, which are spaced apart along the circumference of the tire. The tread pattern also includes: a second sipe, which is located between two adjacent lateral grooves. One end of the second sipe is connected to the longitudinal groove, and the other end of the second sipe is at a first preset distance L1 from the tire shoulder. The second sipe is set at a fourth included angle A4 with the circumference of the tire, and the fourth included angle A4 satisfies: 78°≤A4≤82°; a third sipe, which is located between two adjacent lateral grooves. One end of the third sipe is connected to the longitudinal groove, and the other end of the third sipe is at a second preset distance L2 from the tire shoulder. The third sipe is set at a fifth included angle A5 with the circumference of the tire, and the fifth included angle A5 satisfies: 78°≤A5≤82°; wherein, the first preset distance L1 and the second preset distance L2 satisfy: L2<L1.

[0010] Furthermore, there are multiple intermediate tread portions, including a central tread portion, at least a portion of which coincides with the center surface S of the tire; wherein, the groove structure is provided on the central tread portion.

[0011] Furthermore, the multiple intermediate tread portions also include a crown tread portion located between the shoulder tread portion and the center tread portion. The tread structure also includes a connecting groove disposed on the crown tread portion for connecting two adjacent longitudinal grooves. The connecting groove includes a first sub-connecting groove and a second sub-connecting groove that are interconnected. The ends of the first sub-connecting groove and the second sub-connecting groove that are away from each other are connected to the longitudinal grooves. The extension direction of the first sub-connecting groove is consistent with the width direction of the tire. The extension direction of the second sub-connecting groove is set at a sixth included angle A6 with the width direction of the tire. The sixth included angle A6 satisfies: 39°≤A6≤41°.

[0012] Furthermore, there are multiple connecting grooves, which are spaced apart along the circumference of the tire. The tread structure also includes a fourth sipe, which is located between two adjacent connecting grooves. The fourth sipe includes a third sub-sipe and a fourth sub-sipe that are connected to each other. The ends of the third sub-sipe and the fourth sub-sipe that are away from each other are connected to the longitudinal groove. The third sub-sipe is aligned with the width direction of the tire, and the fourth sub-sipe is set at a seventh angle A7 with the width direction of the tire. The seventh angle A7 satisfies: 39°≤A7≤41°.

[0013] Furthermore, the tread pattern also includes: circumferential grooves, provided on the shoulder tread portion and / or the middle tread portion, the circumferential grooves extending along the circumference of the tire; wherein, the width W2 of the circumferential grooves satisfies: 1.3mm≤W2≤1.7mm.

[0014] Furthermore, the lateral groove includes a first lateral groove and a second lateral groove that are interconnected. The end of the first lateral groove away from the second lateral groove extends to the tire shoulder, and the end of the second lateral groove away from the first lateral groove is connected to the longitudinal groove. The depth H1 of the first lateral groove and the depth H2 of the second lateral groove satisfy the condition: H2 < H1.

[0015] Furthermore, the tread pattern structure also includes: N pitch tread units arranged circumferentially along the tire, each pitch tread unit including a lateral groove, and the pitch tread unit having a pitch P; the pitch P of the pitch tread unit containing the lateral groove, the width W51 of the first lateral groove, and the width W52 of the second lateral groove satisfy: 0.088P≤W51≤0.098P, 0.121P≤W52≤0.131P; wherein, the N pitch tread units include a first tread group, a second tread group, a third tread group, and a fourth tread group. The pitches P1 of the first pattern group, P2 of the second pattern group, P3 of the third pattern group, P4 of the fourth pattern group, and P5 of the fifth pattern group satisfy the following: 1.04P1≤P2≤1.24P1, 1.18P1≤P3≤1.38P1, 1.32P1≤P4≤1.52P1, 1.46P1≤P5≤1.66P1. The number N of the pitch pattern units satisfies: 68≤N≤72, where N is an even number.

[0016] Applying the technical solution of this utility model, a tread pattern is provided on the tire tread. The longitudinal grooves of the tread pattern extend circumferentially along the tire, and there are multiple longitudinal grooves. These multiple longitudinal grooves are spaced apart along the width direction of the tire to divide the tread into two shoulder tread portions and a middle tread portion located between the two shoulder tread portions. The groove structure is provided on the middle tread portion and includes a first recess and a first sipe that are interconnected. The end of the first recess away from the first sipe extends into a longitudinal groove located on one side of the middle tread portion to communicate with that longitudinal groove. The end of the first sipe away from the first recess extends into a longitudinal groove located on the other side of the middle tread portion to communicate with that longitudinal groove. The extending direction of the first recess forms a first angle A1 with the first sipe. There are multiple groove structures, which are spaced apart circumferentially along the tire. The first recess of two adjacent groove structures communicates with different longitudinal grooves. In this way, during vehicle operation, the multiple longitudinal grooves on the tire ensure water drainage performance and improve its anti-slip properties. Simultaneously, the first recess breaks the water film between the central tread and the road surface, preventing the formation of a complete water film that could cause tire slippage. This increases the friction between the central tread and the ground, improving wet handling. Furthermore, the design of the first groove enhances the rigidity of the central tread, improving grip and handling, and ensuring driving safety. Additionally, the first recess of the separator extends to different longitudinal grooves, resulting in an alternating symmetrical distribution of the separator along the tire's circumference. This helps disrupt the periodic vibrations of the central tread when in contact with the road surface, dispersing noise energy across a wider frequency range during tire operation. This optimizes the distribution characteristics of noise vibration energy, reduces tire noise, and improves tire comfort, thus solving the problem in existing technologies where tires cannot simultaneously meet the requirements of handling and comfort. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 A partial structural schematic diagram of an embodiment of the tire tread structure according to the present invention is shown;

[0019] Figure 2 It shows Figure 1 Enlarged view of part of the pattern structure in the image;

[0020] Figure 3 It shows Figure 1 A cross-sectional view of the transverse grooves in the pattern structure from one perspective;

[0021] Figure 4 It shows Figure 1 A cross-sectional view of the first recess of the patterned structure and the connecting groove, and a cross-sectional view of the transverse groove from another perspective.

[0022] Figure 5 It shows Figure 1 A cross-sectional view of the circumferential grooves in the patterned structure.

[0023] The above figures include the following reference numerals:

[0024] 10. Longitudinal groove; 11. First longitudinal groove; 12. Second longitudinal groove;

[0025] 20. Tire shoulder pattern area;

[0026] 30. Middle pattern section; 31. Central pattern section; 32. Crown pattern section;

[0027] 40. Groove structure; 41. First recess; 42. First cutting groove; 421. First sub-cutting groove; 422. Second sub-cutting groove;

[0028] 50. Transverse groove; 51. First transverse groove; 52. Second transverse groove;

[0029] 60. Second tool groove;

[0030] 70. Third tool groove;

[0031] 80. Connecting trench; 81. First sub-connecting trench; 82. Second sub-connecting trench;

[0032] 90. Fourth tool groove; 91. Third sub-tool groove; 92. Fourth sub-tool groove;

[0033] 100. Circumferential groove. Detailed Implementation

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0036] In this utility model, unless otherwise stated, directional terms such as "upper" and "lower" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" are generally used in relation to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0037] To address the problem that existing tires cannot simultaneously meet the requirements of handling and comfort, this application provides a tire.

[0038] like Figures 1 to 5 As shown, the tire tread has a tread pattern, which includes longitudinal grooves 10 and groove structures 40. The longitudinal grooves 10 extend circumferentially along the tire, and there are multiple longitudinal grooves 10. These multiple longitudinal grooves 10 are spaced apart along the width of the tire to divide the tread into two shoulder tread portions 20 and an intermediate tread portion 30 located between the two shoulder tread portions 20. The groove structure 40 is disposed on the intermediate tread portion 30 and includes a first recess 41 and a first sipe 42 that communicate with each other. The end of the first recess 41 away from the first sipe 42 extends into the longitudinal groove 10 located on one side of the intermediate tread portion 30 to communicate with it. The end of the first sipe 42 away from the first recess 41 extends into the longitudinal groove 10 located on the other side of the intermediate tread portion 30 to communicate with it. The extending direction of the first recess 41 and the first sipe 42 form a first angle A1. There are multiple groove structures 40, which are spaced apart along the circumference of the tire. The first recess 41 of two adjacent groove structures 40 are respectively connected to different longitudinal grooves 10.

[0039] Using the technical solution of this embodiment, a tread pattern is provided on the tire tread. The longitudinal grooves 10 of the tread pattern extend along the circumference of the tire. There are multiple longitudinal grooves 10, which are spaced apart along the width direction of the tire to divide the tread into two shoulder tread portions 20 and an intermediate tread portion 30 located between the two shoulder tread portions 20. A groove structure 40 is provided on the intermediate tread portion 30. The groove structure 40 includes a first recess 41 and a first sipe 42 that are interconnected. The end of the first recess 41 away from the first sipe 42 extends into the longitudinal groove 10 located on one side of the intermediate tread portion 30 to communicate with the longitudinal groove 10. The end of the first sipe 42 away from the first recess 41 extends into the longitudinal groove 10 located on the other side of the intermediate tread portion 30 to communicate with the longitudinal groove 10. The extending direction of the first recess 41 and the first sipe 42 are set at a first included angle A1. The tire features multiple groove structures 40, spaced apart circumferentially along its surface. The first recess 41 of adjacent groove structures 40 connects to different longitudinal grooves 10. This design ensures excellent water drainage and improves the tire's anti-slip performance during driving. Simultaneously, the first recess 41 breaks the water film between the central tread pattern 30 and the road surface, preventing the formation of a complete water film that could cause tire slippage. This increases the friction between the central tread pattern 30 and the ground, enhancing wet handling. Furthermore, the arrangement of the first sipe 42 increases the rigidity of the central tread pattern 30, improving grip and handling, and ensuring driving safety. Meanwhile, the first recess 41 of the separator extends to different longitudinal grooves 10, so that the separator is alternately and symmetrically distributed along the circumference of the tire. This helps to disrupt the periodic vibration of the middle tread portion 30 when it contacts the driving surface, so that the noise energy during tire driving can be dispersed to a wider frequency range, optimize the distribution characteristics of noise vibration energy, reduce the noise during tire driving, improve tire comfort, and thus solve the problem that the tire cannot meet the requirements of handling and comfort in the prior art.

[0040] In this embodiment, the ground contact area of ​​the tire tread pattern structure is 61%-67%, which ensures the uniformity of the force on the tire tread pattern blocks, optimizes the force distribution on the tire tread, improves the tire's wear resistance, and extends the tire's service life.

[0041] Specifically, the contact patch of the tire tread pattern is 64%. This design ensures the rigidity of the tire tread, improves tire wear resistance, extends tire life, optimizes the performance balance between dry and wet roads, and enhances the overall safety of the tire.

[0042] like Figure 4As shown, one groove wall of the first recess 41 is set at a 3° angle with the normal of the groove wall, and the other groove wall of the first recess 41 is set at a 5° angle with the normal of the groove wall, so as to facilitate the discharge of foreign objects, improve the wear resistance of the tire, and extend the service life of the tire.

[0043] In this embodiment, the first included angle A1 is set at 90°.

[0044] like Figure 1 and Figure 2 As shown, the first cutting groove 42 includes a first sub-cutting groove 421 and a second sub-cutting groove 422 that are interconnected. The second sub-cutting groove 422 is located between the first recess 41 and the first sub-cutting groove 421. The first sub-cutting groove 421 is connected to the longitudinal groove 10. The first sub-cutting groove 421 and the second sub-cutting groove 422 are arranged at a second included angle A2. In this way, the first cutting groove 42 achieves communication with the longitudinal groove 10 through the first sub-cutting groove 421 and with the first recess 41 through the second sub-cutting groove 422, ensuring the reliability of the communication of the first cutting groove 42. Meanwhile, the arrangement of the first sub-groove 421 and the second sub-groove 422 at a second included angle A2 has two advantages. First, it makes the first groove 42 zigzag-shaped, expanding the range of the first groove 42 in the middle tread portion 30, further improving the rigidity of the middle tread portion 30, enhancing the tire's grip and braking force, and thus improving the tire's driving safety. Second, it disperses the sound waves in the first groove 42 at the bending point, avoiding the concentration of sound wave energy, further reducing tire driving noise and improving tire comfort.

[0045] In this embodiment, the second included angle A2 is set at 90°.

[0046] like Figure 1 and Figure 2 As shown, the tread pattern also includes lateral grooves 50. The lateral grooves 50 are located on the tire shoulder tread portion 20, with one end connected to the longitudinal grooves 10 and the other end extending to the tire shoulder. The lateral grooves 50 are positioned at a third angle A3 with respect to the tire's width direction, where the angle A3 satisfies: 11°≤A3≤13°. Thus, the lateral grooves 50 on the tire shoulder tread portion 20 can, on the one hand, connect with the longitudinal grooves 10, draining water from the longitudinal grooves 10 to the tire shoulder, improving the drainage performance of the tire shoulder tread portion 20 and thus enhancing its wet handling; on the other hand, they can increase the friction between the tire shoulder tread portion 20 and the ground, improving its grip performance, increasing braking force during braking, shortening the braking distance, improving tire handling stability, and ultimately enhancing tire safety.

[0047] like Figure 4 As shown, one wall of the transverse groove 50 is set at a 3° angle to the normal of the groove wall, and the other wall of the transverse groove 50 is set at a 5° angle to the normal of the groove wall, so as to facilitate the discharge of foreign objects, improve the wear resistance of the tire, and extend the service life of the tire.

[0048] In this embodiment, the edges of the lateral groove 50 are chamfered to reduce the impact of the driving surface on the tire shoulder tread 20, prevent the tire shoulder tread 20 from cracking and falling off, improve the wear resistance of the tire shoulder tread 20, and improve the wear resistance of the tire.

[0049] like Figure 1 As shown, there are multiple lateral grooves 50, which are spaced apart along the circumference of the tire. The tread pattern also includes a second sipe 60 and a third sipe 70. The second sipe 60 is positioned between two adjacent lateral grooves 50. One end of the second sipe 60 connects to the longitudinal groove 10, and the other end of the second sipe 60 has a first preset distance L1 between it and the tire shoulder. The second sipe 60 forms a fourth angle A4 with the tire's circumference, satisfying: 78°≤A4≤82°. The third sipe 70 is positioned between two adjacent lateral grooves 50. One end of the third sipe 70 connects to the longitudinal groove 10, and the other end of the third sipe 70 has a second preset distance L2 between it and the tire shoulder. The third sipe 70 forms a fifth angle A5 with the tire's circumference, satisfying: 78°≤A5≤82°. The first preset distance L1 and the second preset distance L2 satisfy: L2<L1. In this way, the second groove 60 and the third groove 70 not only improve the grip of the shoulder tread portion 20, but also improve the rigidity of the shoulder tread portion 20, thereby improving the handling stability and wear resistance of the shoulder tread portion 20, extending the service life of the shoulder tread portion 20, and thus extending the service life of the tire.

[0050] In this embodiment, both the second cutting groove 60 and the third cutting groove 70 are arc-shaped.

[0051] like Figure 1 and Figure 2 As shown, there are multiple intermediate tread portions 30, including a central tread portion 31, at least a portion of which coincides with the center surface S of the tire. A groove structure 40 is provided on the central tread portion 31. Thus, the central tread portion 31 serves as the center of the contact area between the tire and the road surface. The groove structure 40 on the central tread portion 31 increases the friction between the central tread portion 31 and the road surface, ensuring the grip of the central tread portion 31 and reducing noise between the central tread portion 31 and the road surface, thereby improving tire handling and comfort.

[0052] like Figure 1 and Figure 2 As shown, the plurality of intermediate tread portions 30 also include a crown tread portion 32 located between the shoulder tread portion 20 and the center tread portion 31, and the tread structure also includes a connecting groove 80. The connecting groove 80 is provided on the crown tread portion 32 to connect two adjacent longitudinal grooves 10. The connecting groove 80 includes a first sub-connecting groove 81 and a second sub-connecting groove 82 that are interconnected. The ends of the first sub-connecting groove 81 and the second sub-connecting groove 82 that are away from each other are connected to the longitudinal grooves 10. The extending direction of the first sub-connecting groove 81 is consistent with the width direction of the tire, and the extending direction of the second sub-connecting groove 82 is set at a sixth included angle A6 with the width direction of the tire, where the sixth included angle A6 satisfies: 39°≤A6≤41°. Thus, the connecting groove 80 can connect the longitudinal grooves 10 located on both sides of the connecting crown tread portion 32, allowing water in the longitudinal grooves 10 to be discharged to the outside of the tire through the connecting groove 80, thereby improving the drainage performance of the crown tread portion 32. Meanwhile, the arrangement of the first sub-connecting groove 81 and the second sub-connecting groove 82 is beneficial to improving the drainage efficiency of the tread pattern 32 and enhancing the tire's drainage efficiency. On the other hand, it can alleviate the noise resonance caused by the arrangement of the longitudinal groove 10 and the connecting groove 80, reduce the noise between the tread pattern 32 and the driving surface, and further improve the tire's comfort.

[0053] like Figure 4 As shown, one wall of the connecting groove 80 is set at a 3° angle to the normal of the groove wall, and the other wall of the connecting groove 80 is set at a 5° angle to the normal of the groove wall, so as to facilitate the discharge of foreign objects, improve the wear resistance of the tire, and extend the service life of the tire.

[0054] In this embodiment, the tire has a width T between itself and the driving surface. Multiple longitudinal grooves 10 include a first longitudinal groove 11 and a second longitudinal groove 12. The first longitudinal groove 11 is located between the shoulder tread portion 20 and the crown tread portion 32, and the second longitudinal groove 12 is located between the crown tread portion 32 and the center tread portion 31. The width W41 of the first longitudinal groove 11 and the width W42 of the second longitudinal groove 12 satisfy the following condition: 1.09W41≤W42≤1.13W41. The widths T, W41, and W42 satisfy the following conditions: 0.113T≤W11≤0.143T, 0.114T≤W12≤0.144T, and 0.177T≤W13≤0.207T. This arrangement allows the longitudinal grooves 10 to drain more water, improving the tire's drainage performance, reducing the risk of tire slippage on the ground, and enhancing the tire's wet traction. At the same time, the width of the multiple longitudinal grooves 10 can also disperse the sound wave energy generated by the tire during rolling, avoid the concentration of noise peaks, thereby reducing tire driving noise and improving tire comfort.

[0055] In this embodiment, the width W11 of the center tread portion 31, the width W12 of the crown tread portion 32, and the width W13 of the shoulder tread portion 20 satisfy the following conditions: 0.113T≤W11≤0.143T, 0.114T≤W12≤0.144T, and 0.177T≤W13≤0.207T. Specifically, the widths W11, W12, and W13 satisfy the following conditions: 0.99W11≤W12≤1.03W11, and 1.47W11≤W13≤1.51W11. This optimized distribution of the tire tread blocks ensures straight-line stability while improving the tire's responsiveness during small-angle turns, enhancing rotational precision and handling stability, and improving the tire's dynamic performance. Meanwhile, the above-mentioned design, combined with the arrangement of the longitudinal grooves 10, ensures tire drainage performance and improves wet handling, while reducing deformation energy consumption during tire-road contact, increasing tire rigidity, improving dry grip, and enhancing both dry and wet grip. Furthermore, this design also reduces tire rolling resistance, improves fuel economy, and enhances the tire's environmental friendliness.

[0056] like Figure 1 As shown, there are multiple connecting grooves 80, which are spaced apart along the circumference of the tire. The tread pattern also includes a fourth sipe 90. The fourth sipe 90 is located between two adjacent connecting grooves 80 and includes a third sub-sipe 91 and a fourth sub-sipe 92 that are interconnected. The ends of the third sub-sipe 91 and the fourth sub-sipe 92 that are furthest from each other are connected to the longitudinal groove 10. The third sub-sipe 91 is aligned with the width direction of the tire, and the fourth sub-sipe 92 is set at a seventh angle A7 with respect to the width direction of the tire, where the seventh angle A7 satisfies: 39°≤A7≤41°. This arrangement ensures the grip of the tread pattern 32 while improving its rigidity, thereby enhancing the handling stability and wear resistance of the tread pattern 32, extending its service life, and consequently, the tire's service life. Meanwhile, the arrangement of the third sub-groove 91 and the fourth sub-groove 92 makes the rigidity of the tread pattern 32 more uniform, avoids abnormal wear of the tread pattern 32 during rolling, improves the wear resistance of the tread pattern 32, and thus improves the wear resistance of the tire.

[0057] like Figure 1 , Figure 2 and Figure 5As shown, the tread pattern also includes circumferential grooves 100. The circumferential grooves 100 are provided on the shoulder tread portion 20 and / or the intermediate tread portion 30, extending circumferentially along the tire. The width W2 of the circumferential grooves 100 satisfies: 1.3mm ≤ W2 ≤ 1.7mm. Thus, the circumferential grooves 100 enhance the ability of the shoulder tread portion 20 and the crown tread portion 32 to cut through the water film, further improving the tire's wet handling. They also optimize the rigidity distribution of the shoulder tread portion 20 and the crown tread portion 32, preventing stress concentration and extending the service life of both portions, thus further extending the tire's lifespan.

[0058] In this embodiment, axial grooves are provided on the shoulder tread portion 20 and the crown tread portion 32.

[0059] like Figure 1 and Figure 2 As shown, the lateral groove 50 includes a first lateral groove 51 and a second lateral groove 52 that are interconnected. The end of the first lateral groove 51 away from the second lateral groove 52 extends to the tire shoulder, and the end of the second lateral groove 52 away from the first lateral groove 51 is connected to the longitudinal groove 10. The depth H1 of the first lateral groove 51 and the depth H2 of the second lateral groove 52 satisfy the condition: H2 < H1. This arrangement ensures both the drainage performance of the lateral groove 50 and the rigidity of the tire shoulder tread pattern 20, further improving the wear resistance and handling of the tire shoulder tread pattern 20.

[0060] like Figure 1As shown, the tread pattern structure also includes N pitch tread units arranged circumferentially along the tire. Each pitch tread unit includes a lateral groove 50, and the pitch tread unit has a pitch P. The pitch P of the pitch tread unit containing the lateral groove 50, the width W51 of the first lateral groove 51, and the width W52 of the second lateral groove 52 satisfy the following: 0.088P≤W51≤0.098P, 0.121P≤W52≤0.131P. The N pitch pattern units include the first pattern group, the second pattern group, the third pattern group, the fourth pattern group, and the fifth pattern group. The pitches P1 of the first pattern group, P2 of the second pattern group, P3 of the third pattern group, P4 of the fourth pattern group, and P5 of the fifth pattern group satisfy the following: 1.04P1≤P2≤1.24P1, 1.18P1≤P3≤1.38P1, 1.32P1≤P4≤1.52P1, and 1.46P1≤P5≤1.66P1. The number of pitch pattern units N satisfies: 68≤N≤72, and N is an even number. In this way, the proportional relationship between distance P, the width W51 of the first lateral groove 51, and the width W52 of the second lateral groove 52 optimizes the size and layout of the lateral grooves 50 of the shoulder tread portion 20, improves the water drainage efficiency of the shoulder tread portion 20, enhances the wet handling of the shoulder tread portion 20, and thus improves the tire's handling. At the same time, the multi-pitch setting effectively disperses the cavity noise spectrum energy generated by the grooves, making the noise frequency distribution more uniform, reducing noise peaks in specific frequency bands, thereby reducing tire driving noise and improving tire comfort.

[0061] In this embodiment, the five pitch pattern elements are optimized through finite element simulation. They are arranged randomly in the circumferential direction to obtain the pitch arrangement with the best noise performance. Finally, the even-numbered pitches within 68-72 are sorted to achieve the optimal noise, thereby reducing tire noise during driving and reducing the generation of noise resonance frequency.

[0062] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0063] The tire tread has a tread pattern with longitudinal grooves extending circumferentially along the tire. Multiple longitudinal grooves are spaced apart along the tire's width, dividing the tread into two shoulder tread sections and a central tread section between them. The groove structure is located on the central tread section and includes a first recess and a first sipe that communicate with each other. The end of the first recess away from the first sipe extends into a longitudinal groove on one side of the central tread section, communicating with that groove. The end of the first sipe away from the first recess extends into a longitudinal groove on the other side of the central tread section, communicating with that groove. The extension direction of the first recess forms a first angle A1 with the first sipe. Multiple groove structures are spaced apart circumferentially along the tire, and the first recesses of adjacent groove structures communicate with different longitudinal grooves. Thus, during vehicle operation, the multiple longitudinal grooves on the tire ensure water drainage performance and improve the tire's anti-slip performance. Meanwhile, the first recess can break the water film between the central tread and the driving surface, preventing the formation of a complete water film that could cause tire slippage. This increases the friction between the central tread and the ground, improving the tire's wet handling. Simultaneously, the design of the first groove enhances the rigidity of the central tread, improving tire grip and handling, and ensuring driving safety. Furthermore, the first recess of the separator extends to different longitudinal grooves, resulting in an alternating symmetrical distribution of the separator along the tire's circumference. This helps disrupt the periodic vibrations of the central tread when in contact with the driving surface, dispersing noise energy across a wider frequency range during tire operation. This optimizes the distribution characteristics of noise vibration energy, reduces tire noise, and improves tire comfort, thus solving the problem in existing technologies where tires cannot simultaneously meet the requirements of handling and comfort.

[0064] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0065] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0066] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tire characterized by, The tire tread has a tread pattern, the tread pattern including: Longitudinal grooves (10) extend along the circumference of the tire. There are multiple longitudinal grooves (10), and the multiple longitudinal grooves (10) are spaced apart along the width direction of the tire to divide the tread into two shoulder tread portions (20) and an intermediate tread portion (30) located between the two shoulder tread portions (20). A groove structure (40) is provided on the intermediate patterned portion (30). The groove structure (40) includes a first recess (41) and a first cutting groove (42) that are interconnected. The end of the first recess (41) away from the first cutting groove (42) extends into a longitudinal groove (10) located on one side of the intermediate patterned portion (30) to communicate with the longitudinal groove (10). The end of the first cutting groove (42) away from the first recess (41) extends into a longitudinal groove (10) located on the other side of the intermediate patterned portion (30) to communicate with the longitudinal groove (10). The extension direction of the first recess (41) and the first cutting groove (42) are set at a first included angle A1. There are multiple groove structures (40), and the multiple groove structures (40) are arranged at intervals along the circumference of the tire. The first recess (41) of two adjacent groove structures (40) are respectively connected to different longitudinal grooves (10).

2. The tire according to claim 1, characterized in that, The first cutting groove (42) includes a first sub-cutting groove (421) and a second sub-cutting groove (422) that are interconnected. The second sub-cutting groove (422) is located between the first recess (41) and the first sub-cutting groove (421). The first sub-cutting groove (421) is connected to the longitudinal groove (10). The first sub-slot (421) and the second sub-slot (422) are arranged at a second included angle A2.

3. The tire of claim 1, wherein, The pattern structure also includes: A lateral groove (50) is provided on the tread portion (20) of the tire shoulder. One end of the lateral groove (50) is connected to the longitudinal groove (10), and the other end of the lateral groove (50) extends to the tire shoulder. The transverse groove (50) is set at a third angle A3 with respect to the width direction of the tire, and the third angle A3 satisfies: 11°≤A3≤13°.

4. The tire according to claim 3, characterized in that, The lateral grooves (50) are multiple, and the multiple lateral grooves (50) are spaced apart along the circumference of the tire. The tread pattern also includes: The second sipe (60) is disposed between two adjacent transverse grooves (50). One end of the second sipe (60) is connected to the longitudinal groove (10). The other end of the second sipe (60) is at a first preset distance L1 from the tire shoulder. The second sipe (60) is disposed at a fourth included angle A4 with respect to the circumference of the tire. The fourth included angle A4 satisfies: 78°≤A4≤82°. The third groove (70) is provided between two adjacent transverse grooves (50). One end of the third groove (70) is connected to the longitudinal groove (10). The other end of the third groove (70) is at a second preset distance L2 from the tire shoulder. The third groove (70) is set at a fifth angle A5 with respect to the circumference of the tire. The fifth angle A5 satisfies: 78°≤A5≤82°. Wherein, the first preset distance L1 and the second preset distance L2 satisfy the condition: L2 < L1.

5. The tire according to claim 1, characterized in that, There are multiple intermediate tread portions (30), and the multiple intermediate tread portions (30) include a central tread portion (31), at least a portion of the central tread portion (31) coincides with the center surface S of the tire; wherein, the groove structure (40) is disposed on the central tread portion (31).

6. The tire according to claim 5, characterized in that, The plurality of intermediate tread portions (30) also include a crown tread portion (32) located between the shoulder tread portion (20) and the center tread portion (31), and the tread structure further includes: A connecting groove (80) is provided on the tread pattern portion (32) to connect two adjacent longitudinal grooves (10); The connecting groove (80) includes a first sub-connecting groove (81) and a second sub-connecting groove (82) that are connected to each other. The ends of the first sub-connecting groove (81) and the second sub-connecting groove (82) that are away from each other are connected to the longitudinal groove (10). The extension direction of the first sub-connecting groove (81) is consistent with the width direction of the tire. The extension direction of the second sub-connecting groove (82) is set at a sixth included angle A6 with the width direction of the tire. The sixth included angle A6 satisfies: 39°≤A6≤41°.

7. The tire according to claim 6, characterized in that, The connecting grooves (80) are multiple, and the multiple connecting grooves (80) are spaced apart along the circumference of the tire. The tread pattern structure also includes: The fourth cutting groove (90) is disposed between two adjacent connecting grooves (80). The fourth cutting groove (90) includes a third sub-cutting groove (91) and a fourth sub-cutting groove (92) that are connected to each other. The ends of the third sub-cutting groove (91) and the fourth sub-cutting groove (92) that are away from each other are connected to the longitudinal groove (10). The third sub-groove (91) is aligned with the width direction of the tire, and the fourth sub-groove (92) is set at a seventh angle A7 with respect to the width direction of the tire. The seventh angle A7 satisfies: 39°≤A7≤41°.

8. The tire according to claim 1, characterized in that, The pattern structure also includes: A circumferential groove (100) is provided on the shoulder tread portion (20) and / or the intermediate tread portion (30), the circumferential groove (100) extending along the circumference of the tire; The width W2 of the circumferential groove (100) satisfies: 1.3mm≤W2≤1.7mm.

9. The tire according to claim 3, characterized in that, The transverse groove (50) includes a first transverse groove (51) and a second transverse groove (52) that are interconnected. The first transverse groove (51) extends to the tire shoulder at one end away from the second transverse groove (52), and the second transverse groove (52) communicates with the longitudinal groove (10) at one end away from the first transverse groove (51). The depth H1 of the first transverse groove (51) and the depth H2 of the second transverse groove (52) satisfy the condition: H2 < H1.

10. The tire according to claim 9, characterized in that, The pattern structure also includes: N pitch pattern units are arranged circumferentially along the tire, each pitch pattern unit includes the lateral groove (50), and the pitch pattern unit has a pitch P; The pitch P of the pitch pattern unit where the transverse groove (50) is located, and the width of the first transverse groove (51) The widths W51 and the second transverse groove (52) satisfy the following: 0.088P ≤ W51 ≤ 0.098P, 0.121P ≤ W52≤0.131P; The N pitch pattern units include a first pattern group, a second pattern group, a third pattern group, a fourth pattern group, and a fifth pattern group. The pitches P1 of the first pattern group, P2 of the second pattern group, P3 of the third pattern group, P4 of the fourth pattern group, and P5 of the fifth pattern group satisfy the following: 1.04P1≤P2≤1.24P1, 1.18P1≤P3≤1.38P1, 1.32P1≤P4≤1.52P1, 1.46P1≤P5≤1.66P1, and the number N of the pitch pattern units satisfies: 68≤N≤72, where N is an even number.

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