Tire

Abstract

This invention provides a tire with a tread pattern. The tread pattern includes: longitudinal grooves extending circumferentially along the tire, 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 between the two shoulder tread portions; lateral grooves on the shoulder tread portions, one end of which communicates with the tire shoulder, and the other end of which is spaced apart from the longitudinal grooves; and connecting sipes on the central tread portion to connect two adjacent longitudinal grooves. Both the shoulder tread portions and the central tread portion have chamfered corners, with at least a portion of the chamfers on the shoulder tread portions located within the lateral grooves, and at least a portion of the chamfers on the central tread portions located within the connecting sipes. This invention effectively solves the problem of poor tire handling in the prior art.

Description

Technical Field

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

[0002] Currently, as the only component of a vehicle that directly contacts the ground, the performance of tires directly affects the vehicle's driving safety, comfort, handling, and environmental friendliness.

[0003] However, traditional tires primarily bear the weight of the vehicle and generally employ a relatively simple longitudinal tread groove and tread block design to achieve tire performance. But as vehicle sales increase, driving scenarios become increasingly complex and varied, with more situations requiring improved tire handling performance, such as city cornering, highway lane changes, and emergency maneuvers. Utility Model Content

[0004] The main objective of this invention is to provide a tire that solves the problem of poor tire handling in the prior art.

[0005] 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 middle tread portion located between the two shoulder tread portions; lateral grooves disposed on the shoulder tread portions, one end of which communicates with the tire shoulder, and the other end of which is spaced apart from the longitudinal grooves; and a connecting sipe disposed on the middle tread portion to connect two adjacent longitudinal grooves; wherein both the shoulder tread portions and the middle tread portion have chamfered corners, with at least a portion of the chamfered corners on the shoulder tread portions located within the lateral grooves, and at least a portion of the chamfered corners on the middle tread portions located within the connecting sipe.

[0006] Furthermore, the tread pattern also includes: a transverse sipe, which is provided on the tread section of the tire shoulder, with one end of the transverse sipe connected to the tire shoulder and the other end of the transverse sipe spaced apart from the longitudinal groove.

[0007] Furthermore, the inner shoulder tread portion of the two tire shoulder tread portions is designated as the inner shoulder tread portion, and the outer shoulder tread portion is designated as the outer shoulder tread portion. The lateral groove includes: a first lateral groove disposed on the inner shoulder tread portion; and a second lateral groove disposed on the outer shoulder tread portion. The width W11 of the second lateral groove and the width W22 of the outer shoulder tread portion satisfy the following condition: 0.78W22≤W11≤0.82W22. The second lateral groove forms a fourth angle A4 with respect to the width direction of the tire, and the fourth angle A4 satisfies the following condition: 10°≤A4≤15°. The chamfer disposed on the inner shoulder tread portion includes at least two first chamfers, which are located on both sides of the first lateral groove. The ends of the at least two first chamfers away from each other are connected to the longitudinal groove and the shoulder, respectively. The width of the at least two first chamfers gradually decreases in the direction toward each other.

[0008] Furthermore, the tread pattern also includes: a first sipe, one end of which is connected to a first transverse groove, and the other end of which is connected to a longitudinal groove; the first sipe is set at a third included angle A3 with respect to the width direction of the tire, and the third included angle A3 satisfies: 50°≤A3≤55°.

[0009] Further, the lateral groove includes: a first lateral groove disposed on the inner shoulder tread portion, the first lateral groove including a first sub-lateral groove and a second sub-lateral groove that are interconnected, the end of the first sub-lateral groove away from the second sub-lateral groove being connected to the tire shoulder, and the end of the second sub-lateral groove away from the first sub-lateral groove being spaced apart from the longitudinal groove; wherein, the first sub-lateral groove is set at a first angle A1 with respect to the width direction of the tire, the first angle A1 satisfying: 10°≤A1≤15°, the second sub-lateral groove is set at a second angle A2 with respect to the width direction of the tire, the second angle A2 satisfying: 50°≤A2≤55°; and / or, the second lateral groove is disposed on the outer shoulder tread portion, the second lateral groove is set at a fifth angle A5 with respect to the width direction of the tire, the fifth angle A5 satisfying: 10°≤A5≤15°.

[0010] Further, the intermediate tread portion includes a central tread portion, at least a portion of which passes through the center surface S of the tire. The connecting grooves on the central tread portion include a first connecting groove and a second connecting groove. There are multiple first connecting grooves, spaced apart circumferentially along the tire. The second connecting grooves are located between two adjacent first connecting grooves and communicate with two adjacent longitudinal grooves. The chamfers on the central tread portion include: a second chamfer, at least a portion of which is located within the first connecting groove; one end of which communicates with a longitudinal groove on one side of the central tread portion, and the other end of which is spaced apart from a longitudinal groove on the other side of the central tread portion; and a third chamfer, at least a portion of which is located within the first connecting groove; one end of which is spaced apart from the second chamfer, and the other end of which is spaced apart from a longitudinal groove. The third chamfer and the second chamfer are located on opposite sides of the first connecting groove.

[0011] Furthermore, the intermediate tread portion also includes an inner crown tread portion located between the central tread portion and the inner shoulder tread portion. The connecting sipes include a third connecting sipe provided on the inner crown tread portion. There are multiple third connecting sipes, which are spaced apart along the circumference of the tire. The tread structure also includes a second sipe, which is provided between two adjacent third connecting sipes. The second sipe includes a first sub-sipe and a second sub-sipe that are interconnected. The end of the first sub-sipe away from the second sub-sipe is connected to a longitudinal groove on one side of the inner crown tread portion. The end of the second sub-sipe away from the first sub-sipe is spaced apart from a longitudinal groove on the other side of the inner crown tread portion. The second sub-sipe is set at a sixth included angle A6 with the circumference of the tire, and the sixth included angle A6 satisfies: 34°≤A6≤40°.

[0012] Furthermore, the cut corner includes a fourth cut corner disposed on the inner tread pattern portion, both ends of the fourth cut corner being spaced apart from two adjacent longitudinal grooves. The pattern structure also includes a third sipe, disposed between two adjacent third connecting sipes, one end of the third sipe communicating with a longitudinal groove located on one side of the inner tread pattern portion, and the other end of the third sipe being spaced apart from a longitudinal groove located on the other side of the inner tread pattern portion. The third sipe and the second sipe are respectively connected to different longitudinal grooves; wherein, at least a portion of the fourth cut corner is located within the third sipe.

[0013] Furthermore, the intermediate tread portion also includes an outer crown tread portion located between the central tread portion and the outer shoulder tread portion; the connecting groove includes a fourth connecting groove disposed on the outer crown tread portion; the cutting angle includes a fifth cutting angle disposed on the outer crown tread portion, at least a portion of the fifth cutting angle being located within the fourth connecting groove; wherein, the width W31 of the fifth cutting angle satisfies the following condition with respect to the width W24 of the outer crown tread portion: 0.58W24≤W31≤0.62W24; and / or, the width of the fifth cutting angle gradually decreases along the direction from the shoulder tread portion to the outer crown tread portion.

[0014] Furthermore, there are multiple fourth connecting grooves, which are spaced apart along the circumference of the tire; the tread structure also includes: a fifth connecting groove, disposed on the outer shoulder tread portion, the fifth connecting groove including a first sub-connecting groove and a second sub-connecting groove that are interconnected, the ends of the first and second sub-connecting grooves that are away from each other being connected to the longitudinal groove and the shoulder respectively, and the first and second sub-connecting grooves are arranged at an angle; and a fourth groove, including a third sub-groove and a fourth sub-groove that are interconnected, the third and fourth sub-grooves being far apart. The third and fourth sub-cutting grooves are respectively connected to the fourth connecting groove and the longitudinal groove at their respective ends. The fifth cutting groove includes a fifth sub-cutting groove, a sixth sub-cutting groove, and a seventh sub-cutting groove connected in sequence. The sixth sub-cutting groove is located between the fifth and seventh sub-cutting grooves. The ends of the fifth and seventh sub-cutting grooves away from the sixth sub-cutting groove are respectively connected to the fourth connecting groove and the longitudinal groove. The fifth and third sub-cutting grooves are respectively connected to two adjacent fourth connecting grooves. The fourth and seventh sub-cutting grooves are connected to the same longitudinal groove.

[0015] 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. Transverse grooves are provided on the shoulder tread portions, with one end communicating with the tire shoulder and the other end spaced apart from the longitudinal grooves. Connecting sipes are provided on the middle tread portion to connect two adjacent longitudinal grooves. Both the shoulder tread portions and the middle tread portion have chamfered corners; at least a portion of the chamfered corners on the shoulder tread portions are located within the transverse grooves, and at least a portion of the chamfered corners on the middle tread portions are located within the connecting sipes. In this way, during vehicle operation, the connecting grooves on the center tread section effectively drain water between the center tread section and the road surface into the longitudinal grooves on both sides of the center tread section, ensuring reliable drainage and maintaining the tire's anti-slip performance, thus guaranteeing wet handling. Furthermore, they balance the rigidity of the tread blocks in the center tread section, ensuring that the center tread section maintains a high degree of centering during steering, further enhancing tire handling. Simultaneously, the lateral grooves on the shoulder tread section drain water from the shoulder tread section to the outside of the tire, ensuring reliable drainage and further guaranteeing the tire's anti-slip performance and wet handling. Meanwhile, the chamfered corners on the tire shoulder tread pattern cooperate with the lateral grooves, not only closing under tire stress to maintain the rigid support of the shoulder tread pattern and ensure its overall rigidity and dry grip, resulting in good tire support during cornering and reducing the risk of sideslip; but also quickly diverting water from the shoulder tread pattern, ensuring good wet drainage and improving wet handling. Simultaneously, the chamfered corners on the center tread pattern cooperate with the connecting grooves, not only balancing the rigidity of the center tread pattern and ensuring tire stability and handling, but also cutting the water film between the center tread pattern and the road surface, increasing the friction between them, improving the tire's anti-slip performance and wet handling, thus solving the problem of poor tire handling in existing technologies. Furthermore, the chamfered corner design also reduces the risk of tire chipping during driving, reduces tire wear, improves tire wear resistance, and extends tire life. Attached Figure Description

[0016] 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:

[0017] Figure 1A partial structural schematic diagram of an embodiment of the tire tread structure according to the present invention is shown;

[0018] Figure 2 It shows Figure 1 A cross-sectional view of the first longitudinal groove of the pattern structure in the image;

[0019] Figure 3 It shows Figure 1 Cross-sectional views of the second and third longitudinal grooves of the pattern structure;

[0020] Figure 4 It shows Figure 1 A cross-sectional view of the fourth longitudinal groove in the pattern structure;

[0021] Figure 5 It shows Figure 1 A cross-sectional view of the first transverse groove of the pattern structure in the image;

[0022] Figure 6 It shows Figure 1 A cross-sectional view of the second transverse groove in the pattern structure.

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

[0024] 10. Longitudinal groove; 11. First longitudinal groove; 12. Second longitudinal groove; 13. Third longitudinal groove; 14. Fourth longitudinal groove;

[0025] 20. Tire shoulder tread pattern; 21. Inner tire shoulder tread pattern; 22. Outer tire shoulder tread pattern;

[0026] 30. Middle tread pattern; 31. Central tread pattern; 32. Inner tread pattern; 33. Outer tread pattern;

[0027] 41. First transverse groove; 42. Second transverse groove;

[0028] 51. First connecting groove; 52. Second connecting groove; 53. Third connecting groove; 54. Fourth connecting groove;

[0029] 61. First cut angle; 62. Second cut angle; 63. Third cut angle; 64. Fourth cut angle; 65. Fifth cut angle;

[0030] 71. First transverse groove; 711. First sub-transverse groove; 712. Second sub-transverse groove; 72. Second transverse groove;

[0031] 80. First tool groove;

[0032] 90. Second tool groove; 91. First sub-tool groove; 92. Second sub-tool groove;

[0033] 100. Third tool groove;

[0034] 110. Fifth connecting groove; 111. First sub-connecting groove; 112. Second sub-connecting groove;

[0035] 120. Fourth tool groove; 121. Third sub-tool groove; 122. Fourth sub-tool groove;

[0036] 130. Fifth cutting groove; 131. Fifth sub-cutting groove; 132. Sixth sub-cutting groove; 133. Seventh sub-cutting groove. Detailed Implementation

[0037] 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.

[0038] 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.

[0039] 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.

[0040] To address the problem of poor tire handling in existing technologies, this application provides a tire.

[0041] like Figures 1 to 6 As shown, the tire tread has a tread pattern, including longitudinal grooves 10, lateral grooves, and connecting sipes. 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 lateral grooves are provided on the shoulder tread portions 20, with one end communicating with the tire shoulder and the other end spaced apart from the longitudinal grooves 10. The connecting sipes are provided on the intermediate tread portion 30 to connect two adjacent longitudinal grooves 10. Both the shoulder tread portions 20 and the intermediate tread portion 30 have chamfered corners; at least a portion of the chamfers on the shoulder tread portion 20 are located within the lateral grooves, and at least a portion of the chamfers on the intermediate tread portion 30 are located within the connecting sipes.

[0042] 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 circumferentially along the tire. There are multiple longitudinal grooves 10, 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. Transverse grooves are provided on the shoulder tread portions 20, with one end communicating with the tire shoulder and the other end spaced apart from the longitudinal grooves 10. Connecting sipes are provided on the intermediate tread portion 30 to connect two adjacent longitudinal grooves 10. Both the shoulder tread portions 20 and the intermediate tread portion 30 have chamfered corners; at least a portion of the chamfers on the shoulder tread portion 20 are located within the transverse grooves, and at least a portion of the chamfers on the intermediate tread portion 30 are located within the connecting sipes. In this way, during vehicle operation, the connecting grooves on the central tread portion 30 can drain water between the central tread portion 30 and the driving surface into the longitudinal grooves 10 on both sides of the central tread portion 30, ensuring the reliability of drainage of the central tread portion 30 and the tire's anti-slip performance, thereby ensuring the tire's wet handling. On the other hand, it can balance the rigidity of the tread blocks of the central tread portion 30, ensuring that the central tread portion 31 always maintains a high center feel during steering, thus ensuring the tire's handling. At the same time, the transverse grooves on the shoulder tread portion 20 can drain water between the shoulder tread portion 20 and the driving surface out of the tire, ensuring the reliability of drainage of the shoulder tread portion 20, further ensuring the tire's anti-slip and wet handling. Meanwhile, the chamfered corners on the shoulder tread portion 20 can cooperate with the lateral grooves, not only closing when the tire is under force to maintain the rigid support of the shoulder tread portion 20 and ensure its overall rigidity and dry grip, giving the tire good support during cornering and reducing the risk of sideslip; but also quickly diverting water from the shoulder tread portion 20, ensuring the tire's wet drainage and improving wet handling. Simultaneously, the chamfered corners on the center tread portion 30 can cooperate with the connecting grooves, not only balancing the rigidity of the center tread portion 30 and ensuring the tire's driving stability and handling, but also cutting the water film between the center tread portion 30 and the driving surface, increasing the friction between the center tread portion 30 and the driving surface, improving the tire's anti-slip performance and wet handling, thus solving the problem of poor tire handling in existing technologies. At the same time, the angled design can reduce the risk of tire chipping during driving, reduce tire wear, improve tire wear resistance, and extend tire life.

[0043] like Figure 1As shown, the tread pattern also includes lateral sipes, which are provided on the shoulder tread portion 20. One end of the lateral sipe connects to the tire shoulder, and the other end is spaced apart from the longitudinal grooves 10. In this way, the lateral sipes can break through the water film between the shoulder tread portion 20 and the driving surface, increasing the friction between them and ensuring the anti-slip performance and wet handling of the shoulder tread portion 20, thus improving the tire's wet handling. Simultaneously, the lateral sipes also balance the rigidity of the tread blocks in the shoulder tread portion 20, ensuring its handling and further improving the tire's handling.

[0044] like Figure 1 , Figure 5 and Figure 6As shown, of the two tire shoulder tread sections 20, the one located on the inner side of the tire is the inner tire shoulder tread section 21, and the one located on the outer side of the tire is the outer tire shoulder tread section 22. The lateral grooves include a first lateral groove 41 and a second lateral groove 42. The first lateral groove 41 is provided on the inner tire shoulder tread section 21. The second lateral groove 42 is provided on the outer tire shoulder tread section 22. The width W11 of the second lateral groove 42 and the width W22 of the outer tire shoulder tread section 22 satisfy the following condition: 0.78W22≤W11≤0.82W22. The second lateral groove 42 is set at a fourth angle A4 with the width direction of the tire, and the fourth angle A4 satisfies the following condition: 10°≤A4≤15°. The cut angles provided on the inner shoulder tread portion 21 include at least two first cut angles 61. These at least two first cut angles 61 are located on either side of the first lateral groove 41, and their ends, furthest from each other, communicate with the longitudinal groove 10 and the tire shoulder, respectively. The width of the at least two first cut angles 61 gradually decreases in the direction towards each other. Thus, the first lateral groove 41 and the first cut angles 61 on the inner shoulder tread portion 21 work together to quickly guide and drain water accumulated between the inner shoulder tread portion 21 and the driving surface, improving the drainage performance and anti-slip performance of the inner shoulder tread portion 21. Furthermore, during tire compression, the cut angles close to maintain the rigidity of the inner shoulder tread portion 21, ensuring its handling. Simultaneously, the gradual design of the first cut angles 61 reduces damage to the annular blocks of the inner shoulder tread portion 21, ensuring its wear resistance and extending tire life. Meanwhile, the second lateral groove 42 provided on the outer shoulder tread portion 22 can drain water accumulated between the outer shoulder tread portion 22 and the driving surface, ensuring the drainage performance and anti-slip properties of the outer shoulder tread portion 22. Furthermore, the proportional relationship between the width W11 of the second lateral groove 42 and the width W22 of the outer shoulder tread portion 22 optimizes the overall rigidity of the outer shoulder tread portion 22, improves its grip, enhances its cornering support on dry driving surfaces, prevents tire deformation during high-speed cornering, reduces the risk of tire sideslip, and improves tire handling and safety.

[0045] In this embodiment, the width W11 of the second lateral groove 42 and the width W22 on the outer shoulder tread portion 22 satisfy the following condition: W11 = 0.8W22.

[0046] like Figure 1As shown, the tread pattern also includes a first groove 80. One end of the first groove 80 is connected to the first lateral groove 41, and the other end is connected to the longitudinal groove 10. The first groove 80 is set at a third angle A3 with respect to the width direction of the tire, where the third angle A3 satisfies: 50°≤A3≤55°. In this way, the first groove 80 can further break through the water film between the area between the first lateral groove 41 and the longitudinal groove 10 and the driving surface, further increasing the friction between the inner shoulder tread portion 21 and the driving surface, thus improving tire handling. Simultaneously, the first groove 80 can also balance the rigidity of the inner shoulder tread portion 21, further improving the grip and handling of the inner shoulder tread portion 21.

[0047] In this embodiment, a chamfer is provided at the connection between the first groove 80 and the first transverse groove 41 to avoid stress concentration and ensure the wear resistance of the inner shoulder tread portion 21.

[0048] like Figure 1 As shown, the lateral groove includes a first lateral groove 71, which is disposed on the inner shoulder tread portion 21. The first lateral groove 71 includes a first sub-lateral groove 711 and a second sub-lateral groove 712 that are interconnected. The end of the first sub-lateral groove 711 away from the second sub-lateral groove 712 is connected to the tire shoulder, and the end of the second sub-lateral groove 712 away from the first sub-lateral groove 711 is spaced apart from the longitudinal groove 10. The first sub-lateral sipe 711 is set at a first angle A1 with the width direction of the tire, and the first angle A1 satisfies: 10°≤A1≤15°; the second sub-lateral sipe 712 is set at a second angle A2 with the width direction of the tire, and the second angle A2 satisfies: 50°≤A2≤55°; and / or, the lateral sipe includes a second lateral sipe 72, which is set on the outer shoulder tread portion 22, and the second lateral sipe 72 is set at a fifth angle A5 with the width direction of the tire, and the fifth angle A5 satisfies: 10°≤A5≤15°. Thus, the first sub-lateral sipe 711 and the second sub-lateral sipe 712 make the first lateral sipe 71 arranged in a zigzag shape. This zigzag arrangement of the first lateral sipe 71 balances the rigidity of the inner shoulder tread portion 21 from multiple directions, ensuring the uniformity of rigidity of the inner shoulder tread portion 21 and improving its handling stability. Simultaneously, the second lateral sipe 72 balances the rigidity of the outer shoulder tread portion 22, ensuring the uniformity of rigidity of the outer shoulder tread portion 22 and improving its handling, thereby enhancing the tire's cornering stability.

[0049] In this embodiment, the connection between the first sub-lateral groove and the second sub-lateral groove is located at three-quarters of the width of the inner shoulder tread portion 21.

[0050] like Figure 1 As shown, the intermediate tread portion 30 includes a central tread portion 31, at least a portion of which passes through the center surface S of the tire. The central tread portion 31 has connecting grooves including a first connecting groove 51 and a second connecting groove 52. There are multiple first connecting grooves 51, spaced apart circumferentially along the tire. The second connecting grooves 52 are located between adjacent first connecting grooves 51 and communicate with two adjacent longitudinal grooves 10. The chamfers on the central tread portion 31 include a second chamfer 62 and a third chamfer 63. At least a portion of the second chamfer 62 is located within the first connecting groove 51. One end of the second chamfer 62 communicates with a longitudinal groove 10 located on one side of the central tread portion 31, and the other end of the second chamfer 62 is spaced apart from a longitudinal groove 10 located on the other side of the central tread portion 31. At least a portion of the third chamfer 63 is located within the first connecting groove 51. One end of the third chamfer 63 is spaced apart from the second chamfer 62, and the other end of the third chamfer 63 is spaced apart from the longitudinal groove 10. The third chamfer 63 and the second chamfer 62 are located on opposite sides of the first connecting groove 51. Thus, the first connecting groove 51 and the second connecting groove 52 on the central tread portion 31 can break through the water film between the central tread portion 31 and the driving surface, increasing the friction between the central tread portion 31 and the driving surface, and improving the wet handling performance of the central tread portion 31. Simultaneously, the first chamfer 61 and the second chamfer 62 can cooperate with the first connecting groove 51, increasing the drainage width of the first connecting groove 51, improving the drainage efficiency of the first connecting groove 51, and enhancing the tire's drainage performance. Meanwhile, the first cut angle 61 and the second cut angle 62 not only increase the contact area of ​​the center tread portion 31, preventing the center tread block from falling off and improving the handling stability and wear resistance of the center tread portion 31, but also improve the rigidity of the center tread portion 31, ensuring that the contact center area maintains a high center feel during steering, improving the tire's handling, and also preventing the tread blocks of the center tread portion 31 from vibrating, reducing tire driving noise and improving tire comfort.

[0051] like Figure 1As shown, the intermediate tread portion 30 also includes an inner crown tread portion 32 located between the central tread portion 31 and the inner shoulder tread portion 21. The connecting grooves include third connecting grooves 53 disposed on the inner crown tread portion 32. Multiple third connecting grooves 53 are spaced apart along the circumference of the tire. The tread structure also includes second grooves 90 disposed between adjacent third connecting grooves 53. The second groove 90 includes a first sub-groove 91 and a second sub-groove 92 that are interconnected. The end of the first sub-groove 91 away from the second sub-groove 92 communicates with a longitudinal groove 10 located on one side of the inner crown tread portion 32. The end of the second sub-groove 92 away from the first sub-groove 91 is spaced apart from the longitudinal groove 10 located on the other side of the inner crown tread portion 32. The second sub-groove 92 is positioned at a sixth angle A6 with respect to the circumference of the tire, where the sixth angle A6 satisfies: 34°≤A6≤40°. In this way, the third connecting sipe 53 can break through the water film between the inner tread pattern 32 and the driving surface, increasing the friction between the inner tread pattern 32 and the driving surface, and ensuring the wet handling performance of the inner tread pattern 32. At the same time, the first sub-sipe 91 and the second sub-sipe 92 make the second sipe 90 zigzag-shaped, which allows the second sipe 90 to balance the rigidity of the inner tread pattern 32 in multiple directions, ensuring the uniformity of the rigidity of the inner tread pattern 32, balancing the ground contact pressure of the inner tread pattern 32, and improving the tire's handling and driving stability.

[0052] like Figure 1 As shown, the cut angle includes a fourth cut angle 64 disposed on the inner tread pattern 32. Both ends of the fourth cut angle 64 are spaced apart from two adjacent longitudinal grooves 10. The tread structure also includes a third sipe 100, which is disposed between two adjacent third connecting sipes 53. One end of the third sipe 100 communicates with a longitudinal groove 10 located on one side of the inner tread pattern 32, and the other end of the third sipe 100 is spaced apart from a longitudinal groove 10 located on the other side of the inner tread pattern 32. The third sipe 100 and the second sipe 90 communicate with different longitudinal grooves 10. At least a portion of the fourth cut angle 64 is located within the third sipe 100. Thus, the third sipe 100 can cut through the water film between the area between the second sipe 90 and the longitudinal groove 10 and the driving surface, further increasing the friction between the inner tread pattern 32 and the driving surface, improving the tire's anti-slip performance and wet handling. At the same time, the third groove 100 can further balance the rigidity of the inner tread pattern 32 and can also be combined with the fourth tangent 64 to improve the edge effect of the tire, reduce the wear of the sharp corners of the tread blocks of the inner tread pattern 32, and improve the wear resistance of the tire.

[0053] In this embodiment, the fourth chamfer 64 is located at half the width of the inner tread pattern 32.

[0054] like Figure 1 As shown, the intermediate tread portion 30 also includes an outer crown tread portion 33 located between the central tread portion 31 and the outer shoulder tread portion 22. A connecting groove includes a fourth connecting groove 54 disposed on the outer crown tread portion 33. A chamfer includes a fifth chamfer 65 disposed on the outer crown tread portion 33, at least a portion of which is located within the fourth connecting groove 54. The width W31 of the fifth chamfer 65 satisfies the following relationship with the width W24 of the outer crown tread portion 33: 0.58W24≤W31≤0.62W24; and / or, the width of the fifth chamfer 65 gradually decreases along the direction from the shoulder tread portion 20 to the outer crown tread portion 33. Thus, the fourth connecting groove 54 can cut through the water film between the outer crown tread portion 33 and the driving surface, increasing the friction between the outer crown tread portion 33 and the driving surface, thereby improving the tire's anti-slip performance and wet handling. Meanwhile, the setting of the fifth tangent 65 not only works in conjunction with the fourth connecting groove 54 to improve the drainage efficiency of the fourth connecting groove 54 and enhance the tire's drainage performance, but also avoids wear at the sharp corner of the outer tread pattern 33, thus improving the tire's wear resistance.

[0055] In this embodiment, the width W31 of the fifth chamfer 65 and the width W24 of the outer tread pattern 33 satisfy the following condition: W31 = 0.6W24.

[0056] like Figure 1As shown, there are multiple fourth connecting grooves 54, which are spaced apart along the circumference of the tire. The tread pattern also includes a fifth connecting groove 110, a fourth groove 120, and a fifth groove 130. The fifth connecting groove 110 is provided on the outer shoulder tread portion 22. The fifth connecting groove 110 includes a first sub-connecting groove 111 and a second sub-connecting groove 112 that are connected to each other. The ends of the first sub-connecting groove 111 and the second sub-connecting groove 112 that are away from each other are connected to the longitudinal groove 10 and the tire shoulder, respectively. The first sub-connecting groove 111 and the second sub-connecting groove 112 are arranged at an angle. The fourth groove 120 includes a third sub-groove 121 and a fourth sub-groove 122 that are connected to each other. The ends of the third sub-groove 121 and the fourth sub-groove 122 that are away from each other are connected to the fourth connecting groove 54 and the longitudinal groove 10, respectively. The third sub-groove 121 and the fourth sub-groove 122 are arranged at an angle. The fifth sipe 130 includes a fifth sub-sipe 131, a sixth sub-sipe 132, and a seventh sub-sipe 133 connected in sequence. The sixth sub-sipe 132 is located between the fifth sub-sipe 131 and the seventh sub-sipe 133. The ends of the fifth sub-sipe 131 and the seventh sub-sipe 133 away from the sixth sub-sipe 132 are respectively connected to the fourth connecting sipe 54 and the longitudinal groove 10. Among them, the fifth sub-sipe 131 and the third sub-sipe 121 are respectively connected to two adjacent fourth connecting sipes 54, and the fourth sub-sipe 122 and the seventh sub-sipe 133 are connected to the same longitudinal groove 10. In this way, the first sub-connecting sipe 111 and the second sub-connecting sipe 112 make the fifth connecting sipe 110 arranged in a zigzag shape, which further improves the anti-slip and wet handling of the outer shoulder tread portion 22, while balancing the rigidity of the outer shoulder tread portion 22 in multiple directions and improving the handling of the outer shoulder tread portion 22. Meanwhile, the arrangement of the third sub-groove 121 and the fourth sub-groove 122, as well as the arrangement of the fifth sub-groove 131, the sixth sub-groove 132, and the seventh sub-groove 133, makes the fourth sub-groove 120 and the fifth sub-groove 130 arranged in a zigzag shape. This can balance the rigidity of the outer tread pattern 33 from multiple directions, improve the handling of the outer tread pattern 33, and further enhance the handling of the tire.

[0057] In this embodiment, a decorative groove is also provided between the fourth cutting groove 120 and the fifth cutting groove 130.

[0058] In this embodiment, there are multiple fifth connecting grooves 110, which are spaced apart along the circumference of the tire. Two second lateral grooves 42 are provided between two adjacent fifth connecting grooves 110. In this way, two adjacent fifth connecting grooves 110 and adjacent fourth grooves 120 and fifth grooves 130 surround to form a positioning groove assembly, so as to accurately and stably position the tread blocks during the tire vulcanization process, thereby improving the tire production quality.

[0059] like Figures 1 to 4 As shown, the plurality of longitudinal grooves 10 include a first longitudinal groove 11, a second longitudinal groove 12, a third longitudinal groove 13 and a fourth longitudinal groove 14. The first longitudinal groove 11 is located between the inner shoulder tread portion 21 and the inner crown tread portion 32. The second longitudinal groove 12 is located between the inner crown tread portion 32 and the center tread portion 31. The third longitudinal groove 13 is located between the center tread portion 31 and the outer crown tread portion 33. The fourth longitudinal groove 14 is located between the outer crown tread portion 33 and the outer shoulder tread portion 22. The contact surface between the tire tread structure and the driving surface has a width T. The width W11 of the first longitudinal groove 11 satisfies the following relationship with width T: 0.058T≤W11≤0.064T; the width W12 of the second longitudinal groove 12 satisfies the following relationship with width T: 0.067T≤W12≤0.073T; the width W13 of the third longitudinal groove 13 satisfies the following relationship with width T: 0.064T≤W13≤0.070T; the width W14 of the fourth longitudinal groove 14 satisfies the following relationship with width T: 0.033T≤W14≤0.039T; and the widths W21, W22, W23 and W24 satisfy the following relationships: 1.14W24≤W21≤1.18W24, 1.03W24≤W12≤1.07W24, 1.03W24≤W13≤1.07W24. Meanwhile, the widths W21 of the inner shoulder tread portion 21, W22 of the outer shoulder tread portion 22, W23 of the inner crown tread portion 32, W24 of the outer crown tread portion 33, W25 of the center tread portion 31, and the width T satisfy the following: 0.272T≤W21≤0.302T, 0.27T≤W22≤0.30T, 0.115T≤W23≤0.145T, 0.111T≤W24≤0.141T, 0.119T≤W25≤0.149T; and the widths W21, W22, W23, W24, and W25 satisfy the following: W21=2.28W24, W22=2.26W24, W23=1.03W24, W25=1.06W24. In this way, the above-mentioned design results in two main characteristics: firstly, the inner longitudinal grooves 10 of the tire are wider, while the tread blocks are smaller compared to the outer ones, which facilitates water drainage and improves the tire's drainage and safety performance; secondly, the outer longitudinal grooves 10 are narrower, while the tread blocks are larger, which increases tire rigidity. This effectively increases the friction between the outer side of the tire and the ground during cornering, resulting in stronger grip and improved handling and safety. Simultaneously, the larger contact patch allows each tread block to make full contact with the ground, which not only improves the product's wear resistance but also effectively enhances grip performance.

[0060] In this embodiment, the ratio B between the total length of the tire crown arc and the nominal section width SN of the tire satisfies: 0.81≤B≤0.85.

[0061] In this application, three different tread pitches are provided along the circumference of the tire, with widths of P1, P2, and P3, respectively. The relationships between P1, P2, and P3 satisfy: 1.174P1≤P2≤1.234P1, 1.368P1≤P3≤1.428P1. This ensures a uniform distribution of pitch units in contact with the ground during tire rolling, reducing vibration and noise caused by pitch variations, effectively lowering tire noise, and improving tire comfort.

[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. Multiple longitudinal grooves extend circumferentially along the tire's width, dividing the tread into two shoulder tread sections and a central tread section between them. Lateral grooves are located on the shoulder tread sections, with one end connecting to the tire shoulder and the other end spaced apart from the longitudinal grooves. Connecting sipes are located on the central tread section to connect adjacent longitudinal grooves. Both the shoulder and central tread sections have chamfered edges; at least a portion of the chamfered edges on the shoulder tread sections are located within the lateral grooves, and at least a portion of the chamfered edges on the central tread sections are located within the connecting sipes. In this way, during vehicle operation, the connecting grooves on the center tread section effectively drain water between the center tread section and the road surface into the longitudinal grooves on both sides of the center tread section, ensuring reliable drainage and maintaining the tire's anti-slip performance, thus guaranteeing wet handling. Furthermore, they balance the rigidity of the tread blocks in the center tread section, ensuring that the center tread section maintains a high degree of centering during steering, further enhancing tire handling. Simultaneously, the lateral grooves on the shoulder tread section drain water from the shoulder tread section to the outside of the tire, ensuring reliable drainage and further guaranteeing the tire's anti-slip performance and wet handling. Meanwhile, the chamfered corners on the tire shoulder tread pattern cooperate with the lateral grooves, not only closing under tire stress to maintain the rigid support of the shoulder tread pattern and ensure its overall rigidity and dry grip, resulting in good tire support during cornering and reducing the risk of sideslip; but also quickly diverting water from the shoulder tread pattern, ensuring good wet drainage and improving wet handling. Simultaneously, the chamfered corners on the center tread pattern cooperate with the connecting grooves, not only balancing the rigidity of the center tread pattern and ensuring tire stability and handling, but also cutting the water film between the center tread pattern and the road surface, increasing the friction between them, improving the tire's anti-slip performance and wet handling, thus solving the problem of poor tire handling in existing technologies. Furthermore, the chamfered corner design also reduces the risk of tire chipping during driving, reduces tire wear, improves tire wear resistance, and extends tire life.

[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 in that, 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 lateral groove is provided on the tread pattern (20) on the tire shoulder. One end of the lateral groove is connected to the tire shoulder, and the other end of the lateral groove is spaced apart from the longitudinal groove (10). A connecting groove is provided on the middle patterned part (30) to connect two adjacent longitudinal grooves (10). Both the shoulder tread portion (20) and the middle tread portion (30) are provided with chamfers, at least a portion of the chamfers on the shoulder tread portion (20) are located in the transverse groove, and at least a portion of the chamfers on the middle tread portion (30) are located in the connecting groove.

2. The tire according to claim 1, characterized in that, The pattern structure also includes: A transverse slit is provided on the tire shoulder tread portion (20). One end of the transverse slit is connected to the tire shoulder, and the other end of the transverse slit is spaced apart from the longitudinal groove (10).

3. The tire according to claim 2, characterized in that, Of the two shoulder tread portions (20), the one located on the inner side of the tire is the inner shoulder tread portion (21), and the one located on the outer side of the tire is the outer shoulder tread portion (22). The lateral grooves include: The first transverse groove (41) is provided on the inner shoulder tread portion (21); The second lateral groove (42) is provided on the outer shoulder tread portion (22). The width W11 of the second lateral groove (42) and the width W22 of the outer shoulder tread portion (22) satisfy the following: 0.78W22≤W11≤0.82W22. The second lateral groove (42) is provided at a fourth angle A4 with the width direction of the tire. The fourth angle A4 satisfies the following: 10°≤A4≤15°. The chamfer on the inner shoulder tread portion (21) includes at least two first chamfers (61), which are located on both sides of the first transverse groove (41). The ends of the at least two first chamfers (61) that are away from each other are connected to the longitudinal groove (10) and the shoulder, respectively. The width of the at least two first chamfers (61) gradually decreases in the direction toward each other.

4. The tire according to claim 3, characterized in that, The pattern structure also includes: The first cutting groove (80) has one end connected to the first transverse groove (41) and the other end connected to the longitudinal groove (10); the first cutting groove (80) is set at a third included angle A3 with the width direction of the tire, and the third included angle A3 satisfies: 50°≤A3≤55°.

5. The tire according to claim 3, characterized in that, The transverse cutting groove includes: A first lateral sipe (71) is provided on the inner shoulder tread portion (21). The first lateral sipe (71) includes a first sub-lateral sipe (711) and a second sub-lateral sipe (712) that are interconnected. The end of the first sub-lateral sipe (711) away from the second sub-lateral sipe (712) is connected to the shoulder. The end of the second sub-lateral sipe (712) away from the first sub-lateral sipe (711) is spaced apart from the longitudinal groove (10). The first sub-lateral sipe (711) is set at a first angle A1 with respect to the width direction of the tire, and the first angle A1 satisfies: 10°≤A1≤15°. The second sub-lateral sipe (712) is set at a second angle A2 with respect to the width direction of the tire, and the second angle A2 satisfies: 50°≤A2≤55°. And / or, The second transverse sipe (72) is provided on the outer shoulder tread portion (22). The second transverse sipe (72) is provided at a fifth angle A5 with respect to the width direction of the tire. The fifth angle A5 satisfies: 10°≤A5≤15°.

6. The tire according to claim 3, characterized in that, The intermediate tread portion (30) includes a central tread portion (31), at least a portion of which passes through the center surface S of the tire. A connecting groove on the central tread portion (31) includes a first connecting groove (51) and a second connecting groove (52). There are multiple first connecting grooves (51), spaced apart circumferentially along the tire. The second connecting groove (52) is located between two adjacent first connecting grooves (51) and communicates with two adjacent longitudinal grooves (10). The chamfer on the central tread portion (31) includes: The second cut angle (62) is located at least part of the second cut angle (62) within the first communicating groove (51). One end of the second cut angle (62) is connected to the longitudinal groove (10) located on one side of the central patterned part (31), and the other end of the second cut angle (62) is spaced apart from the longitudinal groove (10) located on the other side of the central patterned part (31). The third cut angle (63) is located at least partly within the first communicating groove (51), with one end of the third cut angle (63) spaced apart from the second cut angle (62), and the other end of the third cut angle (63) spaced apart from the longitudinal groove (10). The third chamfer (63) and the second chamfer (62) are located on opposite sides of the first connecting groove (51).

7. The tire according to claim 6, characterized in that, The intermediate tread portion (30) further includes an inner crown tread portion (32) located between the central tread portion (31) and the inner shoulder tread portion (21). The connecting groove includes a third connecting groove (53) disposed on the inner crown tread portion (32). There are multiple third connecting grooves (53), and the multiple third connecting grooves (53) are spaced apart along the circumference of the tire. The tread structure further includes: The second cutting groove (90) is disposed between two adjacent third connecting cutting grooves (53). The second cutting groove (90) includes a first sub-cutting groove (91) and a second sub-cutting groove (92) that are connected to each other. The end of the first sub-cutting groove (91) away from the second sub-cutting groove (92) is connected to a longitudinal groove (10) located on one side of the inner tread pattern (32). The end of the second sub-cutting groove (92) away from the first sub-cutting groove (91) is spaced apart from a longitudinal groove (10) located on the other side of the inner tread pattern (32). The second sub-groove (92) is set at a sixth included angle A6 with the circumferential direction of the tire, and the sixth included angle A6 satisfies: 34°≤A6≤40°.

8. The tire according to claim 7, characterized in that, The chamfer includes a fourth chamfer (64) disposed on the inner tread pattern portion (32), both ends of the fourth chamfer (64) being spaced apart from two adjacent longitudinal grooves (10), and the pattern structure further includes: The third groove (100) is disposed between two adjacent third connecting grooves (53). One end of the third groove (100) is connected to the longitudinal groove (10) located on one side of the inner tread pattern (32). The other end of the third groove (100) is spaced apart from the longitudinal groove (10) located on the other side of the inner tread pattern (32). The third groove (100) and the second groove (90) are respectively connected to different longitudinal grooves (10). At least part of the fourth chamfer (64) is located within the third cut groove (100).

9. The tire according to claim 6, characterized in that, The intermediate tread portion (30) also includes an outer crown tread portion (33) located between the central tread portion (31) and the outer shoulder tread portion (22), the connecting groove includes a fourth connecting groove (54) provided on the outer crown tread portion (33); the cutting angle includes a fifth cutting angle (65) provided on the outer crown tread portion (33), at least a portion of the fifth cutting angle (65) is located within the fourth connecting groove (54); The width W31 of the fifth chamfer (65) and the width W24 of the outer tread pattern (33) satisfy the following: 0.58W24≤W31≤0.62W24; and / or, the width of the fifth chamfer (65) gradually decreases along the direction from the shoulder pattern (20) to the outer tread pattern (33).

10. The tire according to claim 9, characterized in that, The fourth connecting groove (54) is multiple, and the multiple fourth connecting grooves (54) are arranged at intervals along the circumference of the tire; the tread structure also includes: The fifth connecting groove (110) is provided on the outer shoulder tread portion (22). The fifth connecting groove (110) includes a first sub-connecting groove (111) and a second sub-connecting groove (112) that are connected to each other. The ends of the first sub-connecting groove (111) and the second sub-connecting groove (112) that are away from each other are respectively connected to the longitudinal groove (10) and the shoulder. The first sub-connecting groove (111) and the second sub-connecting groove (112) are arranged at an angle. The fourth groove (120) includes a third sub-groove (121) and a fourth sub-groove (122) that are connected to each other. The ends of the third sub-groove (121) and the fourth sub-groove (122) that are away from each other are respectively connected to the fourth connecting groove (54) and the longitudinal groove (10). The third sub-groove (121) and the fourth sub-groove (122) are arranged at an angle. The fifth cutting groove (130) includes a fifth sub-cutting groove (131), a sixth sub-cutting groove (132) and a seventh sub-cutting groove (133) connected in sequence. The sixth sub-cutting groove (132) is located between the fifth sub-cutting groove (131) and the seventh sub-cutting groove (133). The ends of the fifth sub-cutting groove (131) and the seventh sub-cutting groove (133) away from the sixth sub-cutting groove (132) are respectively connected to the fourth connecting cutting groove (54) and the longitudinal groove (10). The fifth sub-cutting groove (131) and the third sub-cutting groove (121) are respectively connected to two adjacent fourth connecting grooves (54), and the fourth sub-cutting groove (122) and the seventh sub-cutting groove (133) are connected to the same longitudinal groove (10).

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