Tire tread structure and tire having the same

Abstract

The utility model provides a kind of tire tread structure and the tire with it.The tire tread structure includes: shoulder block;Pattern block group, including two first pattern block and second pattern block;First pattern block has first, second groove, first groove is close to the groove width of shoulder block pattern block greater than close to the groove width of second pattern block, and the groove width of second groove is close to the groove width of shoulder block pattern block less than close to the groove width of second pattern block;Second pattern block has third, fourth groove, and at least part of third groove is straight groove, and at least part of fourth groove is bent groove or arc groove;At least one groove in first, second, third groove and fourth groove includes opening groove and special-shaped groove;In the direction of the outer surface to center axis of tire, the groove width of at least one part of groove section of special-shaped groove is invariable, and the groove width of at least one part of groove section of special-shaped groove is reduced first and then increased.The utility model solves the problem that conventional fuel car tire cannot be used on electric vehicle in prior art.

Description

Technical Field

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

[0002] Currently, in the field of tire technology, electric vehicles, due to their large battery weight and different motor drive characteristics compared to fuel vehicles, place higher demands on tire load-bearing capacity, impact resistance, forced braking capacity, rolling resistance, wear performance, and noise control.

[0003] However, traditional urban SUV tire designs are mainly used for gasoline vehicles. The tire designs have deficiencies in balancing tread block rigidity, traction performance, wear performance and noise control. The tread block rigidity design of the tires is often too biased towards improving traction and wear performance, while ignoring the need for comfort and noise control, and therefore cannot be used on electric vehicles, that is, the tires have poor compatibility. Utility Model Content

[0004] The main objective of this invention is to provide a tire tread structure and a tire having the same, so as to solve the problem that traditional fuel vehicle tires cannot be used in electric vehicles in the prior art.

[0005] To achieve the above objectives, according to one aspect of the present invention, a tire tread structure is provided, comprising: two shoulder tread blocks; a tread block group located between the two shoulder tread blocks, the tread block group including two first tread blocks and a second tread block spaced apart along the axial direction of the tire; each first tread block being disposed close to its corresponding shoulder tread block relative to the second tread block; on each first tread block, the surface of the first tread block having a first groove and a second groove inclined relative to the center plane CS of the tire, the groove width of the first groove near the shoulder tread block corresponding to the first tread block being greater than the groove width near the second tread block. The width of the second groove near the shoulder tread block corresponding to the first tread block is smaller than the width of the groove near the second tread block; the surface of the second tread block has a third groove and a fourth groove that are inclined relative to the center plane CS, at least a portion of the third groove is a straight groove, and at least a portion of the fourth groove is a bent groove or an arc groove; wherein, at least one of the first groove, the second groove, the third groove and the fourth groove includes an open groove and an irregular groove that are interconnected; along the direction from the outer surface of the tire to the central axis, the width of at least a portion of the irregular groove remains unchanged, and the width of at least a portion of the irregular groove first decreases and then increases.

[0006] Furthermore, the surface of each shoulder tread block has a plurality of fifth grooves and a plurality of sixth grooves spaced along the circumference of the tire, with at least one sixth groove between each two adjacent fifth grooves and at least one fifth groove between each two adjacent sixth grooves, and the fifth groove or the sixth groove is connected to the underside shoulder tread groove.

[0007] Furthermore, on each first patterned block, the surface of the first patterned block also has a seventh groove that is inclined relative to the center plane CS, the seventh groove being located between adjacent first and second grooves; at least a portion of the seventh groove is bent along its extension direction; and / or, the surface of the second patterned block also has an eighth groove that is inclined relative to the center plane CS, the eighth groove being located between adjacent third and fourth grooves; at least a portion of the eighth groove is bent along its extension direction; and / or, the surface of each shoulder patterned block also has a ninth groove that is located between adjacent fifth and sixth grooves; at least a portion of the ninth groove is bent along its extension direction.

[0008] Furthermore, longitudinal grooves are provided between adjacent shoulder pattern blocks and the first pattern block, and between the first pattern block and the second pattern block; wherein, the first groove and the longitudinal groove are set at an angle A and satisfy: 50°≤A≤60°; and / or, the second groove and the longitudinal groove are set at an angle B and satisfy: 50°≤B≤60°; and / or, the third groove and the longitudinal groove are set at an angle C and satisfy: 55°≤C≤65°; and / or, the fourth groove and the longitudinal groove are set at an angle D and satisfy: 55°≤D≤65°; and / Or, the first groove is set at an obtuse angle to at least one of the third and fourth grooves; and / or, the second groove is set at an obtuse angle to at least one of the third and fourth grooves; and / or, the fifth groove has a first distance between itself and the adjacent longitudinal groove, the first distance being greater than or equal to 0.04L and less than or equal to 0.05L, where L is the tire's tread width; and / or, the sixth groove has a second distance between itself and the adjacent longitudinal groove, the second distance being greater than or equal to 0.04L and less than or equal to 0.05L, where L is the tire's tread width.

[0009] Furthermore, along the direction from the open groove to the irregular groove, the width of the open groove gradually decreases, and the irregular groove includes a first groove segment and a second groove segment; along the direction from the outer surface of the tire to the central axis, the width of the first groove segment remains unchanged, and the width of the second groove segment first decreases and then increases; wherein, there is one second groove segment and one first groove segment, and the second groove segment is connected to the open groove through the first groove segment; or, there are multiple second groove segments and multiple first groove segments, and the second groove segment closest to the open groove is connected to the open groove through one first groove segment, and two adjacent second groove segments are connected through at least one first groove segment; the depth H of the open groove satisfies: 0.5mm≤H≤1.5mm; and / or, the groove width L1 of the first groove segment satisfies: 0.3mm≤L1≤1.0mm; and / or, the minimum groove width L2 of the open groove satisfies: 0.3mm≤L2≤1.0mm.

[0010] Further, the first trench includes interconnected open slots and irregularly shaped slots. Along the extension direction of the open slots, the open slots of the first trench include interconnected third and fourth slot segments, the width of the third slot segment being greater than the width of the fourth slot segment, and one wall of the third slot segment and one wall of the fourth slot segment being coplanar; and / or, the second trench includes interconnected open slots and irregularly shaped slots. Along the extension direction of the open slots, the open slots of the second trench include interconnected fifth and sixth slot segments, the width of the fifth slot segment being less than... The sixth groove has a groove width, and one groove wall of the fifth groove and one groove wall of the sixth groove are coplanar; and / or, the third groove includes interconnected open grooves and irregular grooves, and the open groove of the third groove is a straight groove; and / or, the fourth groove includes interconnected open grooves and irregular grooves, and along the extension direction of the open groove, the open groove of the fourth groove includes a first straight groove segment, a bent groove segment and a second straight groove segment connected in sequence, the first straight groove segment and the second straight groove segment are arranged parallel to each other, and the bent groove segment is arranged perpendicular to the center plane CS.

[0011] Furthermore, along the direction from the outer surface of the tire to the central axis, the seventh groove includes two interconnected first irregular groove segments, the width of each first irregular groove segment first increasing and then decreasing; and / or, along the direction from the outer surface of the tire to the central axis, the eighth groove includes two interconnected second irregular groove segments, the width of each second irregular groove segment first increasing and then decreasing; and / or, along the direction from the outer surface of the tire to the central axis, the ninth groove includes two interconnected third irregular groove segments, the width of each third irregular groove segment first increasing and then decreasing.

[0012] Furthermore, the inner surface of the fifth groove includes a first inclined surface, a second inclined surface, a first arc-shaped surface, a third inclined surface, and a fourth inclined surface connected in sequence, with the second inclined surface and the fourth inclined surface being arranged opposite each other; wherein, the height h1 of the first inclined surface satisfies: 0.6mm≤h1≤1.0mm; and / or, the height h2 of the fourth inclined surface satisfies: 1.2mm≤h2≤1.8mm; and / or, the second inclined surface is set at an angle E with the longitudinal reference plane S and satisfies: 1°≤E≤3°; and / or, the third inclined surface is set at an angle F with the longitudinal reference plane S and satisfies: 3°≤F≤5°.

[0013] Furthermore, five different tread pitches are arranged circumferentially along the tire tread structure: the first tread pitch PA, the second tread pitch PB, the third tread pitch PC, the fourth tread pitch PD, and the fifth tread pitch PE. The ratio of the first tread pitch PA to the second tread pitch PB is greater than or equal to 0.58 and less than or equal to 0.70; the ratio of the second tread pitch PB to the third tread pitch PC is greater than or equal to 0.70 and less than or equal to 0.80; the ratio of the third tread pitch PC to the fourth tread pitch PD is greater than or equal to 0.80 and less than or equal to 0.90; and the ratio of the fourth tread pitch PD to the fifth tread pitch PE is greater than or equal to 0.90 and less than or equal to 0.95.

[0014] According to another aspect of the present invention, a tire is provided, including the tire tread structure described above.

[0015] By applying the technical solution of this utility model, the first and second grooves, as well as the third and fourth grooves between the tread block group and the shoulder tread block, all adopt an inclined and gradually widened design. This increases the effective contact area between the tire and the ground, especially on wet and slippery roads, allowing for better water film cutting and improved traction. Simultaneously, the irregular groove design, while maintaining tire rigidity, ensures sufficient rigidity of the tread blocks under various driving conditions through precise control of groove width changes. This improves handling stability on both dry and wet roads, enabling the tire to exhibit excellent traction performance in both hybrid and electric vehicles without sacrificing rigidity. Furthermore, by arranging irregular grooves on the first and second tread blocks, the tire can deform appropriately at the moment of contact with the ground, absorbing the impact force transmitted from the ground, reducing bumps, and improving ride comfort. The combination of irregular grooves and open grooves, by changing the groove width distribution, can break the resonance mode of noise, reducing pumping noise and aerodynamic noise when the tire contacts the road surface. This solves the problem that traditional fuel vehicle tires are incompatible with electric vehicles in existing technologies. 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 1 A plan view of an embodiment of the tire tread structure according to the present invention is shown;

[0018] Figure 2 It shows Figure 1 Side view of the open grooves and irregular grooves in the tire tread structure;

[0019] Figure 3 It shows Figure 1 A side view of the seventh groove of the tire tread structure;

[0020] Figure 4 It shows Figure 1 A side view of the fifth groove of the tire tread structure.

[0021] The above figures include the following reference numerals:

[0022] 10. Shoulder pattern block; 11. Fifth groove; 111. First inclined surface; 112. Second inclined surface; 113. First arc-shaped surface; 114. Third inclined surface; 115. Fourth inclined surface; 12. Sixth groove; 13. Ninth groove;

[0023] 20. First patterned block; 21. First groove; 22. Second groove; 23. Seventh groove; 231. First irregular groove segment;

[0024] 30. Second patterned block; 31. Third groove; 32. Fourth groove; 33. Eighth groove;

[0025] 41. Open groove; 411. Third groove segment; 412. Fourth groove segment; 413. Fifth groove segment; 414. Sixth groove segment; 415. First straight groove segment; 416. Bent groove segment; 417. Second straight groove segment; 42. Irregular groove; 421. First groove segment; 422. Second groove segment; 43. Longitudinal groove. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] 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.

[0029] To address the problem that traditional fuel vehicle tires are incompatible with electric vehicles, this application provides a tire tread structure and a tire having the same.

[0030] like Figures 1 to 4 As shown, the tire tread structure includes two shoulder tread blocks 10 and a tread block group. The tread block group is located between two shoulder tread blocks 10. The tread block group includes two first tread blocks 20 and second tread blocks 30 spaced apart along the axial direction of the tire. Each first tread block 20 is positioned close to its corresponding shoulder tread block 10 relative to the second tread block 30. On each first tread block 20, the surface of the first tread block 20 has a first groove 21 and a second groove 22 that are inclined relative to the center plane CS of the tire. The groove width of the first groove 21 near the shoulder tread block 10 corresponding to the first tread block 20 is greater than the groove width near the second tread block 30. The groove width of the second groove 22 near the shoulder tread block 10 corresponding to the first tread block 20 is smaller than the groove width near the second tread block 30. The surface of the second tread block 30 has a third groove 31 and a fourth groove 32 that are inclined relative to the center plane CS. At least a portion of the third groove 31 is a straight groove, and at least a portion of the fourth groove 32 is a bent groove or an arc-shaped groove. Among them, at least one of the first groove 21, the second groove 22, the third groove 31 and the fourth groove 32 includes an open groove 41 and a shaped groove 42 that are interconnected; along the direction from the outer surface of the tire to the central axis, the width of at least a portion of the groove segment of the shaped groove 42 remains unchanged, and the width of at least a portion of the groove segment of the shaped groove 42 first decreases and then increases.

[0031] Applying the technical solution of this embodiment, the first groove 21 and the second groove 22, as well as the third groove 31 and the fourth groove 32 between the tread block group and the shoulder tread block 10, all adopt an inclined and width-gradient design, thereby increasing the effective contact area between the tire and the ground. Especially on wet and slippery roads, it can better cut through the water film and improve traction. At the same time, the design of the irregular groove 42, while maintaining tire rigidity, ensures that the tread blocks can maintain sufficient rigidity under various driving conditions by precisely controlling the groove width change, thereby improving handling stability on dry and wet roads. This allows the tire to perform excellent traction performance in both hybrid and electric vehicles without sacrificing rigidity. Meanwhile, by arranging irregular grooves 42 on the first tread block 20 and the second tread block 30, the tire can deform appropriately at the moment of contact with the ground, absorb the impact force transmitted from the ground, reduce the feeling of bumps, and improve ride comfort. Furthermore, the combination of irregular grooves 42 and open grooves 41 can break the resonance mode of noise by changing the width distribution of the grooves, reduce the pumping noise and aerodynamic noise when the tire contacts the road surface, and thus solve the problem that traditional fuel vehicle tires cannot be used on electric vehicles in the prior art.

[0032] In this embodiment, through precise groove layout and shape optimization, the best balance of traction performance, rigidity, comfort and noise control is achieved. It not only meets the basic requirements of traditional fuel vehicles for tire performance, but also makes targeted improvements for the characteristics of electric vehicles, making it a city SUV tire that is fully compatible with hybrid vehicles.

[0033] like Figure 1 As shown, the surface of each shoulder tread block 10 has multiple fifth grooves 11 and multiple sixth grooves 12 spaced apart along the tire's circumference. At least one sixth groove 12 is provided between every two adjacent fifth grooves 11, and at least one fifth groove 11 is provided between every two adjacent sixth grooves 12. The fifth grooves 11 or sixth grooves 12 communicate with the under-shoulder tread grooves. In this way, the fifth grooves 11 and sixth grooves 12 are arranged at intervals along the tire's circumference. Through the communication between the fifth grooves 11 or sixth grooves 12 and the under-shoulder tread grooves, accumulated water can be quickly and effectively guided to the tire sidewalls for drainage, reducing the formation of a water film and thus improving the tire's wet grip. Simultaneously, the staggered arrangement of at least one sixth groove 12 between every two adjacent fifth grooves 11 and at least one fifth groove 11 between every two adjacent sixth grooves 12 increases the density of drainage channels on the tire surface, significantly improving drainage efficiency and driving safety on slippery roads.

[0034] In this embodiment, the staggered design of the fifth groove 11 and the sixth groove 12 breaks the noise pattern caused by continuous grooves. By intersecting different grooves, sound waves can be effectively dispersed, reducing the generation of noise at specific frequencies. In addition, the connection between the grooves and the shoulder tread grooves can optimize the acoustic characteristics of the tire, reduce the noise generated by the interaction between the tire and the air during driving, thereby reducing the overall noise level and improving the driver's auditory comfort.

[0035] Optionally, on each of the first patterned blocks 20, the surface of the first patterned block 20 further has a seventh groove 23 inclined relative to the center plane CS, the seventh groove 23 being located between adjacent first grooves 21 and second grooves 22; at least a portion of the seventh groove 23 is bent along its extension direction; and / or, the surface of the second patterned block 30 further has an eighth groove 33 inclined relative to the center plane CS, the eighth groove 33 being located between adjacent third grooves 31 and fourth grooves 32; at least a portion of the eighth groove 33 is bent along its extension direction; and / or, the surface of each shoulder patterned block 10 further has a ninth groove 13, the ninth groove 13 being located between adjacent fifth grooves 11 and sixth grooves 12; at least a portion of the ninth groove 13 is bent along its extension direction. In this way, the bending grooves disperse deformation pressure at the bending point when the tire contacts the ground, reducing lateral slippage of the tread blocks and thus improving handling precision and responsiveness. At the same time, the design of the bending grooves helps avoid abnormal wear, especially wear at the groove edges when the tire rotates. The shape of the bending grooves reduces direct contact between the groove edges and the ground, resulting in more even wear and extending tire life.

[0036] In this embodiment, because the bending grooves disrupt the resonance effect that might be generated by continuous grooves, they reduce the straight-line propagation of sound waves, thereby dispersing the noise source and reducing the noise intensity at specific frequencies. Therefore, the bending design of the seventh groove 23, the eighth groove 33, and the ninth groove 13 can significantly reduce tire noise during driving. Among them, the bending design of the ninth groove 13, located on the shoulder tread block 10, can more effectively control the noise when the tire contacts the ground, providing the driver with a quieter driving environment and improving overall driving comfort.

[0037] Optionally, longitudinal grooves 43 are provided between adjacent shoulder pattern blocks 10 and the first pattern block 20, and between the first pattern block 20 and the second pattern block 30; wherein the first groove 21 and the longitudinal groove 43 are set at an angle A and satisfy: 50°≤A≤60°; and / or, the second groove 22 and the longitudinal groove 43 are set at an angle B and satisfy: 50°≤B≤60°; and / or, the third groove 31 and the longitudinal groove 43 are set at an angle C and satisfy: 55°≤C≤65°; and / or, the fourth groove 32 and the longitudinal groove 43 are set at an angle D and satisfy: 55°≤D≤65°. And / or, the first groove 21 is set at an obtuse angle to at least one of the third groove 31 and the fourth groove 32; and / or, the second groove 22 is set at an obtuse angle to at least one of the third groove 31 and the fourth groove 32; and / or, the fifth groove 11 has a first distance between itself and the adjacent longitudinal groove 43, the first distance being greater than or equal to 0.04L and less than or equal to 0.05L, where L is the tire's tread width; and / or, the sixth groove 12 has a second distance between itself and the adjacent longitudinal groove 43, the second distance being greater than or equal to 0.04L and less than or equal to 0.05L, where L is the tire's tread width. In this way, by precisely controlling the angles between the first groove 21, the second groove 22, the third groove 31, and the fourth groove 32 and the longitudinal groove 43, it helps the tire form more effective water dispersion channels on wet surfaces, preventing the formation of a water film, i.e., hydroplaning, thereby improving wet grip and handling stability. Furthermore, the obtuse angles between the first groove 21 and the third groove 31 and the fourth groove 32, and between the second groove 22 and the third groove 31 and the fourth groove 32, can further increase the effective contact area between the tire and the ground, improve traction, and provide a more stable and safer driving experience, especially during rapid acceleration or braking.

[0038] In this embodiment, angles A and B are both 56°, angles C and D are both 60°, and the first distance and the second distance are both 0.0486L. This configuration effectively reduces the vibration of the tire tread blocks upon contact with the ground, thereby reducing driving noise and improving driving comfort. Simultaneously, the appropriate first and second distances ensure that the tread blocks maintain sufficient rigidity when subjected to lateral forces, preventing excessive deformation during cornering and ensuring the vehicle's lateral stability.

[0039] Optionally, along the direction from the opening groove 41 to the irregular groove 42, the width of the opening groove 41 gradually decreases, and the irregular groove 42 includes a first groove segment 421 and a second groove segment 422; along the direction from the outer surface of the tire to the central axis, the width of the first groove segment 421 remains constant, while the width of the second groove segment 422 first decreases and then increases; wherein, there is one second groove segment 422 and one first groove segment 421, and the second groove segment 422 communicates with the opening groove 41 through the first groove segment 421; or, there are multiple second groove segments 422. The first groove segment 421 consists of multiple segments. A second groove segment 422 near the opening groove 41 is connected to the opening groove 41 via one of the first groove segments 421. Two adjacent second groove segments 422 are connected via at least one first groove segment 421. The depth H of the opening groove 41 satisfies: 0.5mm ≤ H ≤ 1.5mm; and / or, the groove width L1 of the first groove segment 421 satisfies: 0.3mm ≤ L1 ≤ 1.0mm; and / or, the minimum groove width L2 of the opening groove 41 satisfies: 0.3mm ≤ L2 ≤ 1.0mm. Thus, the groove width of the opening groove 41 gradually decreases along the direction towards the irregular groove 42, which facilitates rapid cutting of the water film and improves wet grip. In particular, the variation in the groove width of the second groove segment 422 within the irregular groove 42 effectively guides accumulated water into the groove and then drains it through the variation in groove width, thereby preventing water film from remaining on the tire surface and significantly improving the tire's drainage efficiency on wet and slippery roads. Meanwhile, by controlling the depth H of the opening groove 41 within the range of 0.5mm to 1.5mm, and setting the groove width L1 of the first groove segment 421 and the minimum groove width L2 of the opening groove 41 within a reasonable range of 0.3mm to 1.0mm, the air pumping effect of the tire when driving on the road can be effectively reduced, thereby reducing the noise generated by the tire. The appropriate deformation of the opening groove 41 and the irregular groove 42 when the tire contacts the ground ensures the flexibility of the tire and maintains the stability of the tread blocks, reducing vibration during driving and further improving driving comfort. In particular, the special design of the second groove segment 422 in the irregular groove 42 can break the continuous propagation of sound waves and reduce noise at specific frequencies.

[0040] like Figure 2 As shown, there are two second groove segments 422 and two first groove segments 421. The second groove segment 422 closest to the opening groove 41 is connected to the opening groove 41 through one of the first groove segments 421, and two adjacent second groove segments 422 are connected through another first groove segment 421. The depth H of the opening groove 41 is 1.0 mm, the groove width L1 of the first groove segment 421 is 0.6 mm, and the minimum groove width L2 of the opening groove 41 is 0.6 mm. This dimensional selection increases the tire's self-cleaning ability. During tire rolling, the second groove segment 422 contracts or expands, effectively squeezing out or pushing away foreign objects, preventing tire performance degradation and abnormal wear caused by foreign object embedding, thereby extending the overall service life of the tire.

[0041] Optionally, the first trench 21 includes an open trench 41 and a shaped trench 42 that are interconnected. Along the extending direction of the open trench 41, the open trench 41 of the first trench 21 includes a third trench segment 411 and a fourth trench segment 412 that are interconnected. The width of the third trench segment 411 is greater than the width of the fourth trench segment 412. One wall of the third trench segment 411 and one wall of the fourth trench segment 412 are coplanar. And / or, the second trench 22 includes an open trench 41 and a shaped trench 42 that are interconnected. Along the extending direction of the open trench 41, the open trench 41 of the second trench 22 includes a fifth trench segment 413 and a sixth trench segment 414 that are interconnected. The width of the fifth trench segment 413 is less than the width of the shaped trench 42. The sixth groove segment 414 has a groove width, and one groove wall of the fifth groove segment 413 and one groove wall of the sixth groove segment 414 are coplanar; and / or, the third groove 31 includes an open groove 41 and an irregular groove 42 that are interconnected, and the open groove 41 of the third groove 31 is a straight groove; and / or, the fourth groove 32 includes an open groove 41 and an irregular groove 42 that are interconnected, and along the extending direction of the open groove 41, the open groove 41 of the fourth groove 32 includes a first straight groove segment 415, a bent groove segment 416 and a second straight groove segment 417 that are connected in sequence, the first straight groove segment 415 and the second straight groove segment 417 are arranged parallel to each other, and the bent groove segment 416 is arranged perpendicular to the center plane CS. Thus,

[0042] Optionally, along the direction from the outer surface of the tire to the central axis, the seventh groove 23 includes two interconnected first irregular groove segments 231, the width of each first irregular groove segment 231 first increasing and then decreasing; and / or, along the direction from the outer surface of the tire to the central axis, the eighth groove 33 includes two interconnected second irregular groove segments, the width of each second irregular groove segment first increasing and then decreasing; and / or, along the direction from the outer surface of the tire to the central axis, the ninth groove 13 includes two interconnected third irregular groove segments, the width of each third irregular groove segment first increasing and then decreasing. In this way, the above configuration allows the tire to effectively find the optimal balance between wet grip, water drainage performance, handling stability, and wear resistance, providing an excellent driving experience whether dealing with daily driving on urban roads or facing complex weather conditions. It is particularly suitable for hybrid-electric urban SUVs, meeting the dual requirements of high performance and long lifespan.

[0043] In this embodiment, along the direction from the outer surface of the tire to the central axis, the seventh groove 23 includes two interconnected first irregular groove segments 231, the width of each first irregular groove segment 231 first increasing and then decreasing. The eighth groove 33 includes two interconnected second irregular groove segments, the width of each second irregular groove segment first increasing and then decreasing. The ninth groove 13 includes two interconnected third irregular groove segments, the width of each third irregular groove segment first increasing and then decreasing. Thus, by designing different groove segment width variations of the opening groove 41 and its connection with the irregular groove 42, especially the differences between the third groove segment 411 and the fourth groove segment 412 of the first groove 21, and the fifth groove segment 413 and the sixth groove segment 414 of the second groove 22, the tire's grip on wet and slippery roads can be significantly improved. Meanwhile, the larger groove widths of the third groove section 411 and the fifth groove section 413 facilitate the rapid drainage of water from the road surface, preventing hydroplaning, while the smaller groove widths of the fourth groove section 412 and the sixth groove section 414 help maintain the rigidity of the tread blocks and improve wet grip. This groove width design breaks the continuity of water flow, accelerates the rupture of the water film, and ensures maximum contact area between the tire and the ground, providing stable handling and braking performance even on roads after heavy rain or snow.

[0044] Specifically, in the central area of ​​the tread block, the opening groove 41 of the third groove 31 is designed as a straight groove, which helps maintain the stability of the tread block and improves the tire's handling performance, especially on straight roads. The opening groove 41 of the fourth groove 32 is designed as a combination of a first straight groove section 415, a bent groove section 416, and a second straight groove section 417, further optimizing the rigidity distribution of the tread block, preventing excessive deformation during cornering, improving lateral support, and reducing abnormal wear. The perpendicular setting of the bent groove section 416 to the center plane disperses lateral forces, reduces tread block torsion, maintains the tire's responsiveness and precision during cornering, and also improves wear resistance, extending tire life.

[0045] Optionally, the inner surface of the fifth groove 11 includes a first inclined surface 111, a second inclined surface 112, a first arc-shaped surface 113, a third inclined surface 114, and a fourth inclined surface 115 connected in sequence, with the second inclined surface 112 and the fourth inclined surface 115 being arranged opposite to each other; wherein, the height h1 of the first inclined surface 111 satisfies: 0.6mm≤h1≤1.0mm; and / or, the height h2 of the fourth inclined surface 115 satisfies: 1.2mm≤h2≤1.8mm; and / or, the second inclined surface 112 is set at an angle E with the longitudinal reference surface S and satisfies: 1°≤E≤3°; and / or, the third inclined surface 114 is set at an angle F with the longitudinal reference surface S and satisfies: 3°≤F≤5°. Thus, the aforementioned fine groove surface treatment significantly improves the tire's water drainage capacity. The height design of the first inclined surface 111 and the fourth inclined surface 115 creates effective water dispersion channels when the tire contacts the ground, accelerating the rupture of the water film. Especially on wet and slippery roads after rain or snow, this design significantly reduces hydroplaning, improves wet grip, and ensures driving safety. Simultaneously, the angle E between the second inclined surface 112 and the fourth inclined surface 115, and the angle F between the third inclined surface 114 and the longitudinal reference plane S, can be finely adjusted between 1° and 3° and 3° and 5° respectively. This effectively scatters the sound waves generated when the tire contacts the ground, reducing noise at specific frequencies and making the tire's noise spectrum smoother during driving. This lowers the noise level perceived by the driver, thereby improving driving comfort.

[0046] like Figure 4 As shown, the inner surface of the fifth groove 11 includes a first inclined surface 111, a second inclined surface 112, a first arc-shaped surface 113, a third inclined surface 114, and a fourth inclined surface 115 connected in sequence. The second inclined surface 112 and the fourth inclined surface 115 are arranged opposite to each other. The height h1 of the first inclined surface 111 is 0.8 mm, and the height h2 of the fourth inclined surface 115 is 1.5 mm. The second inclined surface 112 forms an angle E of 2° with the longitudinal reference plane S, and the third inclined surface 114 forms an angle F of 4° with the longitudinal reference plane S.

[0047] Optionally, five different tread pitches are provided along the circumference of the tire tread structure, namely, the first tread pitch PA, the second tread pitch PB, the third tread pitch PC, the fourth tread pitch PD, and the fifth tread pitch PE. The ratio of the first tread pitch PA to the second tread pitch PB is greater than or equal to 0.58 and less than or equal to 0.70, the ratio of the second tread pitch PB to the third tread pitch PC is greater than or equal to 0.70 and less than or equal to 0.80, the ratio of the third tread pitch PC to the fourth tread pitch PD is greater than or equal to 0.80 and less than or equal to 0.90, and the ratio of the fourth tread pitch PD to the fifth tread pitch PE is greater than or equal to 0.90 and less than or equal to 0.95.

[0048] In this embodiment, the pitch ratio of the first pattern pitch PA to the second pattern pitch PB is 0.618, the pitch ratio of the second pattern pitch PB to the third pattern pitch PC is 0.75, the pitch ratio of the third pattern pitch PC to the fourth pattern pitch PD is 0.83, and the pitch ratio of the fourth pattern pitch PD to the fifth pattern pitch PE is 0.917. Furthermore, the minimum and maximum pitch ratios conform to the golden ratio. Simultaneously, the number of first pattern pitches PA is 10, the number of second pattern pitches PB is 8, the number of third pattern pitches PC is 7, the number of fourth pattern pitches PD is 7, and the number of fifth pattern pitches PE is 6, for a total of 38 pattern pitches.

[0049] This application also provides a tire (not shown) including the tire tread structure described above.

[0050] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0051] The first and second grooves, as well as the third and fourth grooves between the tread block group and the shoulder tread block, all feature an inclined and gradually widened design. This increases the effective contact area between the tire and the ground, especially on wet roads, allowing for better water film cutting and improved traction. Simultaneously, the irregular groove design maintains tire rigidity while precisely controlling the groove width variation, ensuring sufficient rigidity of the tread blocks under various driving conditions. This improves handling stability on both dry and wet roads, enabling the tire to perform excellent traction without sacrificing rigidity in both hybrid and electric vehicles. Furthermore, the irregular grooves on the first and second tread blocks allow for appropriate deformation upon tire contact with the ground, absorbing the impact force transmitted from the road surface, reducing bumps, and improving ride comfort. The combination of irregular grooves and open grooves, by altering the groove width distribution, breaks the resonance mode of noise, reducing pumping noise and aerodynamic noise during tire-road contact, thus solving the problem of traditional gasoline vehicle tires being incompatible with electric vehicles.

[0052] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0053] 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.

[0054] 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.

[0055] 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 tread structure, characterized in that, include: Two shoulder patterned blocks (10); The tread block group is located between the two shoulder tread blocks (10). The tread block group includes two first tread blocks (20) and a second tread block (30) spaced apart along the axial direction of the tire. Each first tread block (20) is positioned close to its corresponding shoulder tread block (10) relative to the second tread block (30). On each first tread block (20), the surface of the first tread block (20) has a first groove (21) and a second groove (22) inclined relative to the center plane CS of the tire. The first groove (21) is close to the first tread block (30). The groove width of the shoulder pattern block (10) corresponding to the pattern block (20) is greater than the groove width near the second pattern block (30), and the groove width of the second groove (22) near the shoulder pattern block (10) corresponding to the first pattern block (20) is less than the groove width near the second pattern block (30); the surface of the second pattern block (30) has a third groove (31) and a fourth groove (32) inclined relative to the center plane CS, at least part of the third groove (31) is a straight groove, and at least part of the fourth groove (32) is a bent groove or an arc groove; Among them, at least one of the first groove (21), the second groove (22), the third groove (31) and the fourth groove (32) includes an open groove (41) and a shaped groove (42) that are interconnected; along the direction from the outer surface of the tire to the central axis, the width of at least a portion of the shaped groove (42) remains unchanged, and the width of at least a portion of the shaped groove (42) first decreases and then increases.

2. The tire tread structure according to claim 1, characterized in that, Each of the shoulder tread blocks (10) has a plurality of fifth grooves (11) and a plurality of sixth grooves (12) spaced circumferentially along the tire. At least one sixth groove (12) is provided between each two adjacent fifth grooves (11), and at least one fifth groove (11) is provided between each two adjacent sixth grooves (12). The fifth groove (11) or the sixth groove (12) is connected to the underside tread groove.

3. The tire tread structure according to claim 2, characterized in that, On each of the first patterned blocks (20), the surface of the first patterned block (20) further has a seventh groove (23) inclined relative to the center plane CS, the seventh groove (23) being located between adjacent first grooves (21) and second grooves (22); along the extending direction of the seventh groove (23), at least a portion of the seventh groove (23) is bent; and / or, The surface of the second patterned block (30) also has an eighth groove (33) that is inclined relative to the center plane CS, and the eighth groove (33) is located between the adjacent third groove (31) and the fourth groove (32); Along the extending direction of the eighth groove (33), at least a portion of the eighth groove (33) is bent; and / or, Each of the shoulder pattern blocks (10) also has a ninth groove (13) on its surface, which is located between the adjacent fifth groove (11) and the sixth groove (12); Along the extension direction of the ninth groove (13), at least a portion of the ninth groove (13) is bent.

4. The tire tread structure according to claim 2, characterized in that, Longitudinal grooves (43) are provided between adjacent shoulder pattern blocks (10) and the first pattern block (20), and between the first pattern block (20) and the second pattern block (30); wherein, The first groove (21) and the longitudinal groove (43) are set at an angle A and satisfy: 50°≤A≤60°; and / or, The second groove (22) and the longitudinal groove (43) are set at an angle B and satisfy: 50°≤B≤60°; and / or, The third groove (31) is set at an angle C with the longitudinal groove (43) and satisfies: 55°≤C≤65°; and / or, The fourth groove (32) is set at an angle D with the longitudinal groove (43) and satisfies: 55°≤D≤65°; and / or, The first groove (21) is set at an obtuse angle to at least one of the third groove (31) and the fourth groove (32); and / or, The second groove (22) is set at an obtuse angle to at least one of the third groove (31) and the fourth groove (32); and / or, The fifth groove (11) has a first distance between itself and the adjacent longitudinal groove (43), the first distance being greater than or equal to 0.04L and less than or equal to 0.05L, where L is the tread width of the tire; and / or, The sixth groove (12) has a second distance with the adjacent longitudinal groove (43), the second distance being greater than or equal to 0.04L and less than or equal to 0.05L, where L is the tread width of the tire.

5. The tire tread structure according to claim 1, characterized in that, Along the direction from the opening groove (41) to the irregular groove (42), the width of the opening groove (41) gradually decreases, and the irregular groove (42) includes a first groove segment (421) and a second groove segment (422); along the direction from the outer surface of the tire to the central axis, the width of the first groove segment (421) remains unchanged, and the width of the second groove segment (422) first decreases and then increases; wherein, there is one second groove segment (422) and one first groove segment (421), and the second groove segment (422) is connected to the opening groove (41) through the first groove segment (421); or, the second groove segment (422) is connected to the opening groove (41) through the first groove segment (421). 2) There are multiple first groove segments (421), and the second groove segment (422) close to the opening groove (41) is connected to the opening groove (41) through one of the first groove segments (421). Two adjacent second groove segments (422) are connected through at least one first groove segment (421). The depth H of the opening groove (41) satisfies: 0.5mm≤H≤1.5mm; and / or, the groove width L1 of the first groove segment (421) satisfies: 0.3mm≤L1≤1.0mm; and / or, the minimum groove width L2 of the opening groove (41) satisfies: 0.3mm≤L2≤1.0mm.

6. The tire tread structure according to claim 1, characterized in that, The first trench (21) includes an open groove (41) and an irregular groove (42) that are interconnected. Along the extending direction of the open groove (41), the open groove (41) of the first trench (21) includes a third groove segment (411) and a fourth groove segment (412) that are interconnected. The width of the third groove segment (411) is greater than the width of the fourth groove segment (412). One groove wall of the third groove segment (411) and one groove wall of the fourth groove segment (412) are coplanar; and / or, The second trench (22) includes an interconnected open groove (41) and a shaped groove (42). Along the extending direction of the open groove (41), the open groove (41) of the second trench (22) includes an interconnected fifth groove segment (413) and a sixth groove segment (414). The width of the fifth groove segment (413) is smaller than the width of the sixth groove segment (414). One groove wall of the fifth groove segment (413) and one groove wall of the sixth groove segment (414) are coplanar; and / or, The third groove (31) includes an open groove (41) and an irregular groove (42) that are interconnected, wherein the open groove (41) of the third groove (31) is the straight groove; and / or, The fourth groove (32) includes an open groove (41) and an irregular groove (42) that are connected to each other. Along the extension direction of the open groove (41), the open groove (41) of the fourth groove (32) includes a first straight groove section (415), a bent groove section (416) and a second straight groove section (417) that are connected in sequence. The first straight groove section (415) and the second straight groove section (417) are arranged parallel to each other, and the bent groove section (416) is arranged perpendicular to the center plane CS.

7. The tire tread structure according to claim 3, characterized in that, Along the direction from the outer surface of the tire to the central axis, the seventh groove (23) includes two interconnected first irregular groove segments (231), the width of each first irregular groove segment (231) first increasing and then decreasing; and / or, Along the direction from the outer surface of the tire to the central axis, the eighth groove (33) includes two interconnected second irregular groove segments, the width of each second irregular groove segment first increasing and then decreasing; and / or, Along the direction from the outer surface of the tire to the central axis, the ninth groove (13) includes two interconnected third irregular groove segments, the width of each third irregular groove segment first increases and then decreases.

8. The tire tread structure according to claim 2, characterized in that, The inner surface of the fifth groove (11) includes a first inclined surface (111), a second inclined surface (112), a first arc-shaped surface (113), a third inclined surface (114), and a fourth inclined surface (115) connected in sequence. The second inclined surface (112) and the fourth inclined surface (115) are arranged opposite to each other. The height h1 of the first inclined surface (111) satisfies: 0.6mm≤h1≤1.0mm; and / or the height h2 of the fourth inclined surface (115) satisfies: 1.2mm≤h2≤1.8mm; and / or the second inclined surface (112) is set at an angle E with the longitudinal reference surface S and satisfies: 1°≤E≤3°; and / or the third inclined surface (114) is set at an angle F with the longitudinal reference surface S and satisfies: 3°≤F≤5°.

9. The tire tread structure according to claim 1, characterized in that, Five different tread pitches are provided along the circumference of the tire tread structure, namely, the first tread pitch PA, the second tread pitch PB, the third tread pitch PC, the fourth tread pitch PD, and the fifth tread pitch PE. The ratio of the first tread pitch PA to the second tread pitch PB is greater than or equal to 0.58 and less than or equal to 0.

70. The ratio of the second tread pitch PB to the third tread pitch PC is greater than or equal to 0.70 and less than or equal to 0.

80. The ratio of the third tread pitch PC to the fourth tread pitch PD is greater than or equal to 0.80 and less than or equal to 0.

90. The ratio of the fourth tread pitch PD to the fifth tread pitch PE is greater than or equal to 0.90 and less than or equal to 0.

95.

10. A tire, characterized in that, The tire tread structure includes any one of claims 1 to 9.

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