Tread pattern with a linear fractal structure

Abstract

The present invention provides a tread pattern with a linear fractal structure, which relates to the technical field of tread pattern structures of vehicle tires, comprising four longitudinal grooves, which divide the tread into an inner shoulder pattern block, a left pattern block, a middle pattern block, a right pattern block and an outer shoulder pattern block in the horizontal direction; the four longitudinal grooves are symmetrical in pairs with the center line of the middle pattern block; the inner shoulder pattern block and the outer shoulder pattern block are both provided with a first linear fractal transverse groove that is centrally symmetrical and extends to the sidewall and the bottom of the longitudinal grooves; the left pattern block and the right pattern block are both provided with a second linear fractal transverse groove that is centrally symmetrical and extends to the bottom of the longitudinal grooves on both sides; the middle pattern block is provided with a third linear fractal transverse groove that extends to the bottom of the longitudinal grooves on both sides, which solves the technical problem of easy formation of water film, which leads to a sharp decrease in friction between the tire and the ground and the occurrence of water sliding, and achieves the technical effect of improving the drainage and grip of the tire.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle tire tread pattern structures, in particular to a tread pattern with a linear fractal structure. Background Art

[0002] In transportation, tires are key components that connect vehicles to the ground, and their performance directly affects driving safety and comfort. Especially when driving on slippery roads, the drainage performance of tires is particularly important.

[0003] Currently, common tire treads primarily utilize simple geometric shapes. While these shapes can achieve a certain degree of drainage, their performance is often unstable under complex road conditions and varying water depths due to the diverse nature of vehicle driving scenarios. When a vehicle travels at high speed on a flooded road, a film of water easily forms between the tire and the ground, causing a sharp decrease in friction between the tire and the ground, resulting in "hydroplaning," a phenomenon that threatens driving safety.

[0004] However, as a geometric form with self-similarity and infinite complexity, the existing technology lacks a method to use the fractal structure to increase the number and complexity of drainage groove channels, thereby improving the tire's drainage ability on wet roads and reducing the occurrence of "hydroplaning" on the tire tread. Summary of the Invention

[0005] The purpose of the present invention is to provide a tread pattern with a linear fractal structure to alleviate the technical problem in the prior art that the tire tread adopts a simple geometric shape, which easily forms a water film, causing a sharp drop in friction between the tire and the ground and resulting in hydroplaning.

[0006] To achieve the above object, the technical solution of the present invention is as follows:

[0007] The present invention provides a tread pattern with a linear fractal structure, comprising four longitudinal grooves, which divide the tread into inner shoulder pattern blocks, left pattern blocks, middle pattern blocks, right pattern blocks and outer shoulder pattern blocks in sequence along the horizontal direction;

[0008] The four longitudinal grooves are arranged symmetrically in pairs around the center line of the middle pattern block;

[0009] The inner shoulder pattern block and the outer shoulder pattern block are both provided with a first linear fractal transverse groove which is centrally symmetrical and extends to the sidewall and the bottom of the longitudinal groove;

[0010] The left and right pattern blocks are both provided with a centrally symmetrical second linear fractal transverse groove, which extends to the bottom of the longitudinal grooves on both sides;

[0011] A third straight fractal transverse groove extending to the groove bottoms of the longitudinal grooves on both sides is provided on the middle pattern block.

[0012] Furthermore, the longitudinal groove includes a first groove wall and a second groove wall, both of which are in a broken line shape; a first groove wall angle α formed by the first groove wall and the tread is 18° to 23°, a second groove wall angle β is 10° to 15°, a third groove wall angle γ formed by the second groove wall and the tread is 10° to 15°, and a fourth groove wall angle θ is 18° to 23°;

[0013] The width of the longitudinal groove is 13mm to 15mm, and the depth of the longitudinal groove is 13mm to 20mm;

[0014] The bottom of the longitudinal groove is semicircular in shape, and the diameter of the semicircular bottom of the longitudinal groove is 3 to 8 mm.

[0015] Furthermore, the first linear fractal transverse groove includes a fractal V-shaped transverse groove and a first fine groove; one end of the V-shaped transverse groove extends to the sidewall, and the other end of the V-shaped transverse groove is connected to the first fine groove; the first fine groove extends to the sidewall and the bottom of the longitudinal groove;

[0016] The second linear fractal transverse grooves include two groups of C-shaped transverse grooves and a second fine groove formed by fractalization; the two groups of C-shaped transverse grooves are symmetrically arranged, one side of the C-shaped transverse groove extends to the bottom of the longitudinal groove, the other side of the C-shaped transverse groove is connected to the second fine groove, and the third side of the C-shaped transverse groove is connected to the bottom of the second fine groove and the longitudinal groove at both ends;

[0017] The third straight fractal transverse groove includes a fractal rectangular transverse groove, a fractal third fine groove and a fractal angular transverse groove; the two corners of the rectangular transverse groove extend to the bottom of the longitudinal groove, the two ends of the third fine groove extend to the bottom of the longitudinal grooves on both sides, and one side of the angular transverse groove extends to the bottom of the longitudinal groove.

[0018] Furthermore, the included angles of the V-shaped transverse grooves, the C-shaped transverse grooves and the angular transverse grooves are all 45° to 60°;

[0019] The width of the grooves on the first linear fractal transverse groove, the second linear fractal transverse groove and the third linear fractal transverse groove are all 0.5 mm to 2 mm, and the depth is 0.5 mm to 2 mm.

[0020] Furthermore, the first linear fractal transverse groove is a fractal first rectangular transverse groove, the first rectangular transverse groove includes five first narrow grooves and second narrow grooves arranged perpendicular to the first narrow grooves, and the two first narrow grooves extend to the sidewall and the bottom of the longitudinal groove;

[0021] The second linear fractal transverse groove is a second rectangular transverse groove formed by fractal, and the second rectangular transverse groove includes four third narrow grooves and three fourth narrow grooves arranged perpendicular to the third narrow grooves, and both ends of one third narrow groove extend to the bottom of the longitudinal groove;

[0022] The third linear fractal transverse groove is a fractal third rectangular transverse groove, which includes three fifth narrow grooves and a sixth narrow groove perpendicular to the fifth narrow groove. Both ends of a fifth narrow groove extend to the bottom of the longitudinal groove.

[0023] Furthermore, the width of the grooves on the first rectangular transverse groove, the second rectangular transverse groove and the third rectangular transverse groove are all 0.5 mm to 2 mm, the depth is 0.5 mm to 2 mm, and the inclination angle is 40° to 45°.

[0024] Furthermore, the first linear fractal transverse grooves are first parallelogram transverse grooves formed by fractal, and the first parallelogram transverse grooves include eight first grooves extending to the sidewall and to the groove bottom of the longitudinal groove, and second grooves arranged perpendicular to the first grooves;

[0025] The second linear fractal transverse groove is a second parallelogram transverse groove formed by fractal, and the second parallelogram transverse groove includes eight third grooves extending to the groove bottom of the longitudinal groove, and eight fourth grooves are vertically staggered to the third groove;

[0026] The third linear fractal transverse groove is a third parallelogram transverse groove formed by fractal, and the third parallelogram transverse groove includes six fifth grooves extending to the groove bottom of the longitudinal groove, and six sixth grooves are arranged perpendicular to the fifth groove;

[0027] Furthermore, the width of the grooves on the first parallelogram transverse groove, the second parallelogram transverse groove and the third parallelogram transverse groove are all 0.5 mm to 2 mm, the depth is 1 mm to 2 mm, and the inclination angle is 50° to 55°.

[0028] Furthermore, the first linear fractal transverse groove is a fractal first Z-shaped transverse groove, and the first Z-shaped transverse groove includes three first shallow grooves extending to the sidewall and six second shallow grooves extending to the bottom of the longitudinal groove;

[0029] The second linear fractal transverse groove is a fractal triangular transverse groove, which includes eight third shallow grooves extending to the bottom of the longitudinal groove and three fourth shallow grooves connected to the third shallow grooves;

[0030] The third linear fractal transverse groove is a fractal second Z-shaped transverse groove, and the second Z-shaped transverse groove includes four fifth shallow grooves extending to the groove bottom of the longitudinal groove and a sixth shallow groove connected to the fifth shallow groove.

[0031] The width of the first linear fractal transverse groove, the second linear fractal transverse groove and the third linear fractal transverse groove is 2.5 mm to 3 mm.

[0032] Furthermore, the first linear fractal transverse groove is a fold line transverse groove, both ends of which extend to the sidewall and the bottom of the longitudinal groove respectively, and a thin iron groove is provided at the bend of the fold line transverse groove;

[0033] The second linear fractal transverse groove is a fractal goose-beak-shaped transverse groove, with both ends of the goose-beak-shaped transverse groove extending to the bottom of the longitudinal groove;

[0034] The third straight fractal transverse groove is a fractal goose-wing-shaped transverse groove, both ends of which extend to the bottom of the longitudinal groove, and the goose-wing-shaped transverse groove is connected to the vertical groove.

[0035] The bevel angle of the broken-line transverse groove is 45° to 47°; the sharp angle α of the goose-beak transverse groove is 95° to 97°, and the sharp angle β is 35° to 40°;

[0036] The width of the broken line transverse groove, goose beak transverse groove and goose wing transverse groove is 1mm to 2mm.

[0037] Beneficial effects:

[0038] The present invention provides a tread pattern with a linear fractal structure, comprising four longitudinal grooves arranged longitudinally, the four longitudinal grooves dividing the tread into an inner shoulder pattern block, a left pattern block, a middle pattern block, a right pattern block and an outer shoulder pattern block in the horizontal direction; the four longitudinal grooves are symmetrically arranged in pairs around the center line of the middle pattern block; the four longitudinal grooves can quickly and effectively drain water between the tire and the ground on rainy days or flooded roads, thereby reducing the probability of hydroplaning.

[0039] The inner and outer shoulder blocks each feature a centrally symmetrical first linear fractal lateral groove, extending to the sidewall and the bottom of the longitudinal grooves. The left and right tread blocks each feature a centrally symmetrical second linear fractal lateral groove, extending to the bottom of the longitudinal grooves on both sides. The center block features a third linear fractal lateral groove, extending to the bottom of the longitudinal grooves on both sides. These fractal lateral grooves extend from the tread to the bottom of the longitudinal grooves, helping to quickly drain water on rainy days or slippery roads, reducing the formation of water film and thus improving the tire's anti-hydroplaning performance. This synergistic improvement in both tread groove noise and hydroplaning performance is achieved.

[0040] The present invention utilizes the self-similarity and infinite complexity of fractal structures to more evenly distribute tire wear during use, thereby extending the tire's service life. By fractalizing the grooves on the tread blocks, the area of ​​contact between the tire and the air is widened, which helps to dissipate heat generated by the tire during use more quickly and reduce performance degradation caused by overheating. At the same time, the evenly distributed fine grooves are more conducive to tread drainage, reducing the formation of water film and increasing the tire's grip.

[0041] In addition, fractal patterns not only provide functional advantages, but also serve as a visual identification for tire brands, increasing the market appeal of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0043] Figure 1 A schematic structural diagram of a tread pattern having a linear fractal structure provided by the first embodiment of the present invention;

[0044] Figure 2 A schematic structural diagram of the left longitudinal groove in a tread pattern having a linear fractal structure provided by the first embodiment of the present invention;

[0045] Figure 3 A schematic structural diagram of a right longitudinal groove in a tread pattern having a linear fractal structure provided by the first embodiment of the present invention;

[0046] Figure 4 A schematic structural diagram of a transverse groove in a tread pattern having a linear fractal structure provided by the first embodiment of the present invention;

[0047] Figure 5 A schematic structural diagram of a transverse groove in a tread pattern having a linear fractal structure provided by the first embodiment of the present invention;

[0048] Figure 6 A schematic diagram of the structure of a transverse groove in a tread pattern having a linear fractal structure provided by a second embodiment of the present invention;

[0049] Figure 7 A schematic diagram of the structure of a transverse groove in a tread pattern having a linear fractal structure provided by a third embodiment of the present invention;

[0050] Figure 8 A schematic diagram of the structure of a transverse groove in a tread pattern having a linear fractal structure provided by a fourth embodiment of the present invention;

[0051] Figure 9 A schematic structural diagram of a transverse groove in a tread pattern having a linear fractal structure provided in a fifth embodiment of the present invention.

[0052] Icons: 1-longitudinal groove; 2-inner shoulder tread block; 3-left tread block; 4-middle tread block; 5-right tread block; 6-outer shoulder tread block; 7-first linear fractal transverse groove; 8-second linear fractal transverse groove; 9-third linear fractal transverse groove; 101-first groove wall; 102-second groove wall;

[0053] 701-V-shaped transverse groove; 702-first fine groove; 801-C-shaped transverse groove; 802-second fine groove; 901-rectangular transverse groove; 902-third fine groove; 903-angular transverse groove;

[0054] 703 - first rectangular transverse groove; 704 - first narrow groove; 705 - second narrow groove; 803 - second rectangular transverse groove; 804 - third narrow groove; 805 - fourth narrow groove; 904 - third rectangular transverse groove; 905 - fifth narrow groove; 906 - sixth narrow groove;

[0055] 706 - first parallelogram transverse groove; 707 - first groove; 708 - second groove; 806 - second parallelogram transverse groove; 807 - third groove; 808 - fourth groove; 907 - third parallelogram transverse groove; 908 - fifth groove; 909 - sixth groove;

[0056] 709 - first Z-shaped transverse groove; 710 - first shallow groove; 711 - second shallow groove; 809 - triangular transverse groove; 810 - third shallow groove; 811 - fourth shallow groove; 910 - second Z-shaped transverse groove; 911 - fifth shallow groove; 912 - sixth shallow groove;

[0057] 712-zigzag transverse groove; 713-iron sheet fine groove; 812-goose-beak-shaped transverse groove; 913-goose-wing-shaped transverse groove; 914-vertical groove. DETAILED DESCRIPTION

[0058] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0059] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0060] Example 1

[0061] like Figure 1 As shown, the present invention provides a tread pattern with a linear fractal structure, comprising four longitudinal grooves 1, which divide the tread into an inner shoulder pattern block 2, a left pattern block 3, a middle pattern block 4, a right pattern block 5 and an outer shoulder pattern block 6 in the horizontal direction.

[0062] The four longitudinal grooves 1 are arranged symmetrically in pairs around the center line of the middle pattern block 4;

[0063] The inner shoulder pattern block 2 and the outer shoulder pattern block 6 are both provided with a first linear fractal transverse groove 7 which is centrally symmetrical. The first linear fractal transverse groove 7 extends to the sidewall and the bottom of the longitudinal groove 1.

[0064] The left pattern block 3 and the right pattern block 5 are both provided with a centrally symmetrical second linear fractal transverse groove 8, which extends to the bottom of the longitudinal grooves 1 on both sides;

[0065] The middle pattern block 4 is provided with a third linear fractal transverse groove 9 extending to the groove bottom of the longitudinal grooves 1 on both sides.

[0066] Specifically, four longitudinal grooves 1 divide the tire tread into five blocks. These four grooves 1 are symmetrical about the centerline of the middle block 4, meaning the groove walls of the two left and right longitudinal grooves 1 have different angles. The presence of longitudinal grooves 1 in the tire tread prevents abnormal tire wear. The inner shoulder block 2 and the outer shoulder block 6 are symmetrically arranged, while the left block 3 and the right block 5 are symmetrically arranged. The tread patterns on these five blocks employ a fractal structure.

[0067] The longitudinal groove 1 can effectively prevent abnormal tire wear and balance the tire ground pressure. During vehicle driving, the longitudinal groove 1 can disperse the force from the road surface, prevent excessive pressure on a certain area of ​​the tire, and make the wear of various parts of the tire more even. When turning, the pressure on the outer tire of the vehicle will increase. At this time, the longitudinal groove 1 can disperse this extra pressure to other parts, preventing excessive wear of the outer shoulder tread blocks 6. At the same time, the longitudinal groove 1 can also guide the deformation of the tire during rolling, making the deformation of the tire more reasonable. In addition to preventing abnormal wear, on slippery roads, the longitudinal groove 1 can quickly drain water, reduce the risk of hydroplaning, and improve wetland driving safety; the four different tread blocks with fractal design cooperate with each other to enhance the tire's grip under various road conditions and ensure the vehicle's handling stability and driving smoothness.

[0068] First linear fractal transverse grooves 7 are centrally symmetrical on the inner shoulder block 2 and the outer shoulder block 6, second linear fractal transverse grooves 8 are centrally symmetrical on the left and right blocks 3 and 5, and third linear fractal transverse grooves 9 are formed on the center block 4;

[0069] The first linear fractal transverse groove 7, the second linear fractal transverse groove 8 and the third linear fractal transverse groove 9 are all fractalized in a linear shape; the irregularity of the fractal structure enables the tire to better adapt to different road conditions when in contact with the ground, and can fit tightly whether it is a flat road or a road with slight undulations, thereby significantly enhancing the tire's grip and improving the vehicle's handling stability and safety during driving.

[0070] At the same time, the first linear fractal transverse groove 7 extends to the sidewall and the bottom of the longitudinal groove 1, forming an efficient drainage channel. When driving on slippery roads, accumulated water can flow to the sidewall through the first linear fractal transverse groove 7. At the same time, it can also be quickly drained through the connection with the bottom of the longitudinal groove 1, greatly reducing the risk of the vehicle hydroplaning. The second linear fractal transverse groove 8 extends to the bottom of the longitudinal grooves 1 on both sides, allowing accumulated water in the central area of ​​the tire to be quickly drained laterally. Combined with the longitudinal drainage of the longitudinal grooves 1, a criss-cross drainage network is formed, which speeds up drainage. The third linear fractal transverse groove 9 on the middle pattern block 4 extends to the bottom of the longitudinal grooves 1 on both sides, ensuring that the tire can drain accumulated water in a timely manner even when driving at high speeds, always maintaining good wetland grip. The fractal transverse grooves on the three pattern blocks extend from the tread to the bottom of the longitudinal grooves, effectively reducing the formation of water film between the tire and the ground. They can drain the accumulated water in time, break the continuity of the water film, and keep the tire in effective contact with the ground at all times, thereby improving the tire's anti-hydroskid performance and ensuring the safety and stability of the vehicle when driving on wet roads.

[0071] Therefore, by utilizing the self-similarity and infinite complexity of fractal structures, the wear of tires during use can be distributed more evenly, extending the service life of tires. By fractalizing the grooves on the tread blocks, the area of ​​contact between the tire and the air is widened, which helps to dissipate the heat generated by the tire during use faster and reduce performance degradation caused by overheating. At the same time, the evenly distributed fine grooves are more conducive to tread drainage, reducing the formation of water film and increasing the tire's grip.

[0072] In addition, the fractal-structured transverse groove pattern not only provides functional advantages, but also serves as a visual identification of the tire brand, increasing the market appeal of the product.

[0073] In embodiment 1 of the present invention, Figure 2 、 Figure 3 As shown, the longitudinal groove 1 includes a first groove wall 101 and a second groove wall 102, and the first groove wall 101 and the second groove wall 102 are both in a broken line shape; a first groove wall angle α formed by the first groove wall 101 and the tread is 18° to 23°, a second groove wall angle β is 10° to 15°, a third groove wall angle γ formed by the second groove wall 102 and the tread is 10° to 15°, and a fourth groove wall angle θ is 18° to 23°;

[0074] The width of the longitudinal groove 1 is 13 mm to 15 mm, and the depth of the longitudinal groove 1 is 13 mm to 20 mm; the bottom of the longitudinal groove 1 is semicircular, and the diameter of the semicircular bottom of the longitudinal groove 1 is 3 to 8 mm.

[0075] Specifically, the four longitudinal grooves 1 are symmetrically distributed in pairs with the center line of the middle pattern block 4 as the symmetry axis, that is, the groove wall angles of the two longitudinal grooves 1 on the left and the two longitudinal grooves 1 on the right are exchanged, such as Figure 2 and Figure 3As shown, two longitudinal grooves on the left and right sides are shown respectively. The longitudinal groove 1 includes a first groove wall 101 and a second groove wall 102 in the shape of a broken line, and the height from the broken line to the tread is 3mm to 6mm. The first groove wall angle α formed by the first groove wall 101 and the tread is 18° to 23°, the second groove wall angle β is the angle at the broken line, and the angle is 10° to 15°, the third groove wall angle γ formed by the second groove wall 102 and the tread is 10° to 15°, and the fourth groove wall angle θ is also the angle at the broken line, and the angle is 18° to 23°. During the wear process, the tire is very prone to abnormal wear. Once a certain position begins to wear, the wear area will continue to expand outward along that position. The longitudinal grooves of the pattern with different angles can effectively alleviate the repeated wear of the same position of the tire pattern block, allowing the tire to achieve uniform wear, thereby greatly extending the service life of the tire and effectively alleviating the problem of abnormal tire wear.

[0076] Despite the swapped groove wall angles, the longitudinal groove width remains at 13mm to 15mm. This width ensures optimal drainage performance, compared to the same drainage effect as when the groove wall angles remain unchanged. When driving on rainy or slippery roads, the longitudinal groove 1 can drain water trapped between the tire and the ground, reducing the risk of hydroplaning and ensuring safe and stable driving.

[0077] Longitudinal groove 1 has a depth of 13mm to 20mm and a narrow semicircular bottom with a diameter of 3 to 8mm. This effectively prevents stones from becoming lodged in the groove, significantly improving the tire's stone-entrapment resistance. When driving on complex roads, reducing stone entrapment not only prevents tire damage but also reduces noise caused by stone friction, improving driving comfort.

[0078] In embodiment 1 of the present invention, Figure 5 As shown, the first linear fractal transverse groove 7 is provided on the inner shoulder pattern block 2 and the outer shoulder pattern block 6, as shown in FIG. Figure 5 As shown, it consists of a fractal V-shaped transverse groove 701 and a first fine groove 702. One end of the V-shaped transverse groove 701 extends to the sidewall, and the other end is connected to the first fine groove 702, and the first fine groove 702 extends to the sidewall and the bottom of the longitudinal groove 1. Compared with setting only a single coarse groove at the same position, the noise reduction effect is improved. When the tire rolls, the vibration of the transverse groove will generate noise, and the fractal structure of the V-shaped transverse groove 701 and the first fine groove 702 can effectively disperse the vibration energy, thereby reducing the noise value caused by the vibration of the transverse groove. At the same time, the transverse groove is connected to the longitudinal groove 1. When driving in the rain, accumulated water can quickly flow into the longitudinal groove 1 through the V-shaped transverse groove 701 and the first fine groove 702, and then be discharged between the tire and the ground, effectively improving the drainage of the tire and reducing the risk of hydroplaning when the vehicle is driving on wet roads.

[0079] The second linear fractal transverse groove 8 is located on the surfaces of the left and right tread blocks 3 and 5 and consists of two fractal sets of C-shaped transverse grooves 801 and second fine grooves 802. The two sets of C-shaped transverse grooves 801 are symmetrically arranged, with one side of the C-shaped transverse groove 801 extending to the bottom of the longitudinal groove 1, another side connecting to the second fine groove 802, and the third side connecting the second fine groove 802 to the bottom of the longitudinal groove 1. When the tire encounters flooded road surface, water can flow from multiple directions through the C-shaped transverse grooves 801 and second fine grooves 802 into the longitudinal groove 1, accelerating drainage. The conveniently connected fine grooves facilitate gas discharge upon contact with the ground.

[0080] The third linear fractal transverse groove 9, located on the surface of the middle tread block 4, consists of a fractal rectangular transverse groove 901, a third thin groove 902, and an angular transverse groove 903. The corners of the rectangular transverse groove 901 extend to the bottom of the longitudinal groove 1, the ends of the third thin groove 902 extend to the bottom of the longitudinal grooves 1 on both sides, and one side of the angular transverse groove 903 extends to the bottom of the longitudinal groove 1. This not only enhances the tire's drainage capacity but also improves its overall stability. During drainage, the rectangular transverse groove 901 and the angular transverse groove 903 guide accumulated water quickly toward the longitudinal groove 1, while the third thin groove 902 further ensures smooth flow of accumulated water between the longitudinal grooves 1 on both sides.

[0081] Specifically, the included angles of the V-shaped transverse groove 701, the C-shaped transverse groove 801 and the angular transverse groove 903 are all between 45° and 60°. Figure 4 As shown, the groove widths of the first straight fractal transverse groove 7, the second straight fractal transverse groove 8 and the third straight fractal transverse groove 9 are all 0.5mm to 2mm, and the depths are 0.5mm to 2mm, which not only ensures the effectiveness of the fractal transverse grooves in drainage and noise reduction, but also does not affect the overall strength of the tire.

[0082] Example 2

[0083] In the second embodiment of the present invention, the size and shape of the longitudinal groove 1 are the same as those in the first embodiment, while the transverse grooves on the inner shoulder pattern block 2, the left pattern block 3, the middle pattern block 4, the right pattern block 5 and the outer shoulder pattern block 6 are as follows: Figure 6 shown.

[0084] Specifically, the first linear fractal transverse grooves 7 are fractally formed into first rectangular transverse grooves 703. Specifically, the first linear fractal transverse grooves 7 are composed of multiple rectangular fractals. The length and width of the rectangular grooves comprise five first narrow grooves 704 (leftward-leaning lines in the figure) and second narrow grooves 705 (rightward-leaning lines in the figure) arranged perpendicular to the first narrow grooves 704. Two of the first narrow grooves 704 extend to the sidewall and the bottom of the longitudinal groove 1, forming an efficient drainage network. When the vehicle travels on flooded roads, accumulated water can quickly flow through the first and second narrow grooves 704, 705, and drain through multiple channels into the longitudinal groove 1. This significantly reduces the risk of hydroplaning and ensures vehicle safety on slippery roads. The first rectangular transverse grooves 703 increase the tire's contact area with the ground, and the different orientations of the first and second narrow grooves 704, 705 ensure a more even distribution of friction between the tire and the ground. This provides more stable and reliable grip during acceleration, deceleration, and cornering, significantly improving vehicle handling stability. When the tire rolls, the vibration of the transverse groove will generate noise, while the first rectangular transverse groove 703 can disperse the vibration energy in multiple directions, effectively reducing the generation of noise and providing a quieter and more comfortable environment.

[0085] The second linear fractal transverse groove 8 is a fractal second rectangular transverse groove 803, formed from multiple rectangular fractals. The length and width of the rectangular component include four third narrow grooves 804 and three fourth narrow grooves 805 arranged perpendicular to the third narrow grooves 804. Both ends of each third narrow groove 804 extend to the bottom of the longitudinal groove 1. This allows accumulated water to flow into the longitudinal groove 1 from multiple angles through the third narrow grooves 804 and fourth narrow grooves 805, improving drainage efficiency and enabling timely drainage of accumulated water even during high-speed tire travel.

[0086] The third linear fractal transverse groove 9 is a fractal-shaped third rectangular transverse groove 904, formed from two rectangles and a diagonal fractal. It includes three fifth narrow grooves 905 and a sixth narrow groove 906, arranged perpendicular to the fifth narrow grooves 905. Each fifth narrow groove 905 extends from both ends to the bottom of the longitudinal groove 1, improving the drainage system and ensuring the rapid and effective drainage of accumulated water. It also enhances the structural stability of the tire. During driving, tires are subjected to various complex stresses. The third linear fractal transverse groove 9 effectively distributes these stresses, reducing abnormal wear caused by localized stress concentration, thereby extending the tire's service life.

[0087] The groove widths of the first rectangular transverse groove 703, the second rectangular transverse groove 803, and the third rectangular transverse groove 904 are all 0.5mm to 2mm, 0.5mm to 2mm deep, and have an inclination angle of 45° to 60°. This was determined based on full consideration of performance requirements such as drainage, grip, and noise reduction, as well as tire manufacturing processes and costs. This ensures that the fractal structure not only leverages its various advantages but also offers excellent practicality and cost-effectiveness.

[0088] It should be noted that the width of the small rectangle formed by the first rectangular transverse groove 703 is 7mm to 8mm, and the width of the large rectangle is 14mm to 16mm; the width of the rectangle formed by the second rectangular transverse groove 803 is 7mm to 8mm; and the width of the small rectangle formed by the third rectangular transverse groove is 3.5mm to 4mm. This makes the pattern on each tread block fractal and increases exponentially. The complex channels formed by the multiples of large and small rectangles and rectangles of different sizes improve the fractal structure of the entire tire pattern. In terms of drainage, rectangles of different sizes cooperate with each other to guide accumulated water into the longitudinal grooves from different angles, ensuring drainage without dead ends. In terms of structural stability, the distribution of rectangles of different sizes but in multiples enhances the overall strength of the tire, better copes with various stresses during driving, reduces abnormal wear, and extends the service life of the tire.

[0089] Example 3

[0090] In the third embodiment of the present invention, the size and shape of the longitudinal groove 1 are the same as those in the first embodiment, while the transverse grooves on the inner shoulder block 2, the left side block 3, the middle block 4, the right side block 5 and the outer shoulder block 6 are as follows: Figure 7 shown.

[0091] Specifically, the first linear fractal transverse groove 7 is a fractal first parallelogram transverse groove 706. Figure 7As shown, it includes a parallelogram formed by fracting three sides and a group of single-sided parallelograms; among them, there are eight first grooves 707 (the oblique lines tilted to the left in the figure) extending to the sidewall and the bottom of the longitudinal groove 1, and second grooves 708 (the oblique lines tilted to the right in the figure) arranged perpendicular to the first groove 707. The first groove 707 and the second groove 708 form a parallelogram structure. The groove width on the transverse groove is 0.5mm to 2mm, the depth is 1mm to 2mm, and the inclination angle is between 50° and 55°. Because the first groove 707 extends to the sidewall and the bottom of the longitudinal groove 1, accumulated water can quickly flow in from the sidewall and quickly drain to the longitudinal groove 1 through the criss-crossing grooves. The multi-channel drainage design greatly improves the drainage efficiency and effectively reduces the occurrence of hydroplaning. In terms of grip, the parallelogram grid structure increases the contact area between the tire and the ground, and the grooves in different directions enable the tire to better grip the ground in all directions, providing stable and reliable grip whether accelerating, braking or turning.

[0092] The second linear fractal transverse groove 8 is a fractal second parallelogram transverse groove 806. Figure 7 As shown, the structure consists of a fractal parallelogram formed by three sides and a stack of single-sided parallelograms. The structure includes eight third grooves 807 extending to the bottom of the longitudinal groove 1. Eight fourth grooves 808 are interlaced perpendicularly with the third grooves 807, forming a dense parallelogram fractal structure. The groove width, depth, and inclination angle are identical to those of the first linear fractal transverse grooves 7. The interlaced parallelograms further enhance drainage performance. When driving in the rain, accumulated water can quickly flow into the longitudinal grooves 1 from multiple directions, draining away more quickly and ensuring the tire maintains good contact with the ground.

[0093] The third linear fractal transverse groove 9 is a fractal third parallelogram transverse groove 907. As can be seen from the figure, Figure 7 As shown, the parallelogram is formed by fracting three sides, consisting of six fifth grooves 908 extending to the bottom of the longitudinal groove 1, and six vertically arranged sixth grooves 909. Because it is located on the middle pattern block 4, although the number of grooves is relatively small, the parallelogram structure design makes the tire's contact with the ground more directional in terms of grip, providing stable grip in specific driving conditions, such as straight-line driving or small-angle turns.

[0094] It should be noted that the width between the parallelogram formed by the three sides in the first parallelogram transverse groove 706 and a group of single-sided parallelograms is 7mm to 8mm; the width of the parallelogram in the second parallelogram transverse groove 806 is 3.5mm to 4mm; the width of the parallelogram in the third parallelogram transverse groove 907 is 14mm to 16mm.

[0095] In terms of drainage performance, the sizes of the three fractal grooves are interrelated and work together to enable the tire to drain accumulated water promptly and effectively on wet roads, reducing the risk of hydroplaning and maintaining good grip and driving stability.

[0096] Example 4

[0097] In embodiment 4 of the present invention, the size and shape of the longitudinal groove 1 are the same as those in embodiment 1, while the transverse grooves on the inner shoulder pattern block 2, the left pattern block 3, the middle pattern block 4, the right pattern block 5 and the outer shoulder pattern block 6 are as follows: Figure 8 shown.

[0098] The first Z-shaped transverse groove 709 is in the shape of a letter Z. Its structure includes three first shallow grooves 710 extending to the sidewall (the diagonal lines tilted to the left in the figure) and six second shallow grooves 711 extending to the bottom of the longitudinal groove 1 (the diagonal lines tilted to the right in the figure). These shallow grooves are intertwined to form a complex drainage and grip network. The three first shallow grooves 710 extending to the sidewall are like "water diversion channels". When the tire contacts a flooded road surface, they can quickly divert the water accumulated on the sidewall into the transverse groove system. The six second shallow grooves 711 extending to the bottom of the longitudinal groove 1 further guide the accumulated water to the longitudinal groove for drainage. This multi-channel system improves drainage efficiency and effectively reduces the possibility of hydroplaning.

[0099] The triangular transverse groove 809 is in the shape of a triangle and is composed of eight third shallow grooves 810 extending to the bottom of the longitudinal groove 1 and three fourth shallow grooves 811 connected to the third shallow grooves 810. It can collect the accumulated water on the tire surface and guide it to the longitudinal groove for drainage. The three fourth shallow grooves 811 connected to the third shallow grooves 810 optimize the drainage path so that the accumulated water can be discharged from the tire more smoothly. In terms of grip, the triangular structural design increases the roughness of the tire surface and has greater friction with the ground. When the vehicle encounters different road conditions during driving, it can better adapt to changes in the road surface, provide reliable grip, and ensure the stability of the vehicle. At the same time, the structure of the triangular transverse grooves also helps to disperse the stress during vehicle driving, reduce local wear of the tire, and extend the service life of the tire.

[0100] The second Z-shaped transverse groove 910 includes four fifth shallow grooves 911 extending to the bottom of the longitudinal groove 1 and sixth shallow grooves 912 connected to the fifth shallow grooves 911. Its Z-shaped structure echoes that of the first Z-shaped transverse groove 709, but with a different composition. The four fifth shallow grooves 911 extending to the bottom of the longitudinal groove 1 provide a crucial channel for draining accumulated water, quickly directing it from the tire surface to the longitudinal grooves. The sixth shallow grooves 912, connected to the fifth shallow grooves 911, further enhance the transverse groove's drainage and grip structure.

[0101] It should be noted that the first Z-shaped transverse groove 709 and the second Z-shaped transverse groove 910 are in the shape of a letter Z, and the spacing between the two fractal Z shapes is 4.8mm to 5.5mm; the spacing formed by the triangular transverse groove 809 is 2.3mm to 2.6mm; these three fractal transverse grooves cooperate with each other on the tire to form similar fractal structures and work together. In terms of drainage, through their respective drainage channels and interconnected structures, accumulated water can be drained quickly and effectively, ensuring that the tire can maintain good grip performance even on wet and slippery roads. In terms of grip, transverse groove structures of different shapes increase the complexity and diversity of the contact between the tire and the ground, adapt to various road conditions, and provide stable and reliable grip. At the same time, these transverse groove structures can also disperse vibration and stress to a certain extent, reduce noise, and reduce tire wear, thereby improving the overall performance and service life of the tire.

[0102] Example 5

[0103] In the fifth embodiment of the present invention, the size and shape of the longitudinal groove 1 are the same as those in the first embodiment, while the transverse grooves on the inner shoulder pattern block 2, the left pattern block 3, the middle pattern block 4, the right pattern block 5 and the outer shoulder pattern block 6 are as follows: Figure 9 shown.

[0104] The first linear fractal transverse groove 7 is a zigzag transverse groove 712. The angle of the zigzag groove 712, i.e., the angle between the bend and the longitudinal horizontal line, is 45° to 47°, creating a unique flow-guiding path in the tread. The thin iron groove 713 at the bend is formed when the steel sheet is inserted during tire vulcanization and then removed after vulcanization. These grooves increase the complexity and diversity of the overall transverse grooves, thereby enhancing the tire's rigidity.

[0105] The second linear fractal transverse groove 8 is a fractal goose-beak-shaped transverse groove 812. The sharp angle α (i.e., the end of the large triangle) of the goose-beak-shaped transverse groove 812 is 95° to 97°, while the sharp angle β (i.e., the end of the small triangle) is 35° to 40°. This allows the opening of the transverse groove to effectively collect accumulated water and, during tire rolling, utilize the inertia of the water flow to quickly direct it toward the longitudinal groove. Furthermore, when in contact with the ground, it provides friction in different directions, enhancing the tire's grip stability.

[0106] The third linear fractal transverse groove 9 is a fractal goose-wing-shaped transverse groove 913. Its extension to the bottom of the longitudinal groove 1 and the connected vertical groove 914 form a three-dimensional drainage and stress conduction system. The transverse goose-wing-shaped structure disperses stress and reduces tread block deformation when the tire is subjected to lateral forces. The vertical groove 914 provides additional vertical support and drainage channels, further enhancing the tire's overall performance.

[0107] In addition, the width of the three types of transverse grooves are all controlled at 1mm to 2mm, ensuring sufficient drainage space without excessively weakening the rigidity of the pattern blocks.

[0108] The zigzag transverse grooves 712, goose-beak-shaped transverse grooves 812 and goose-wing-shaped transverse grooves 913 use a fractal structure formed by straight lines, which is similar to the shape of geese. When forming a drainage network, the thickness of the water film between the tire and the ground is reduced, which significantly improves the drainage ability of the tire on wet and slippery roads, effectively reduces the risk of slipping, and increases the aesthetics.

[0109] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tread pattern having a linear fractal structure, characterized in that: include: Four longitudinal grooves (1) are provided in a longitudinal direction, wherein the four longitudinal grooves (1) divide the tread into an inner shoulder pattern block (2), a left pattern block (3), a middle pattern block (4), a right pattern block (5) and an outer shoulder pattern block (6) in sequence along the horizontal direction; The four longitudinal grooves (1) are symmetrically arranged in pairs about the center line of the middle pattern block (4); The inner shoulder pattern block (2) and the outer shoulder pattern block (6) are both provided with a first linear fractal transverse groove (7) in a centrally symmetrical manner, and the first linear fractal transverse groove (7) extends to the sidewall and the bottom of the longitudinal groove (1); The left pattern block (3) and the right pattern block (5) are both provided with a second linear fractal transverse groove (8) in a centrally symmetrical manner, and the second linear fractal transverse groove (8) extends to the bottom of the longitudinal grooves (1) on both sides; The middle pattern block (4) is provided with a third linear fractal transverse groove (9) extending to the groove bottom of the longitudinal grooves (1) on both sides; The longitudinal groove (1) includes a first groove wall (101) and a second groove wall (102), and the first groove wall (101) and the second groove wall (102) are both in a broken line shape; a first groove wall angle α formed between the first groove wall (101) and the tread is 18° to 23°, and a second groove wall angle β is 10° to 15°; a third groove wall angle γ formed between the second groove wall (102) and the tread is 10° to 15°, and a fourth groove wall angle θ is 18° to 23°; The width of the longitudinal groove (1) is 13 mm to 15 mm, and the depth of the longitudinal groove (1) is 13 mm to 20 mm; The bottom of the longitudinal groove (1) is semicircular in shape, and the diameter of the semicircular bottom of the longitudinal groove (1) is 3 to 8 mm; The first linear fractal transverse groove (7) comprises a fractal V-shaped transverse groove (701) and a first fine groove (702); one end of the V-shaped transverse groove (701) extends to the tire side, and the other end of the V-shaped transverse groove (701) is connected to the first fine groove (702); the first fine groove (702) extends to the tire side and the groove bottom of the longitudinal groove (1); The second linear fractal transverse groove (8) comprises two groups of fractal C-shaped transverse grooves (801) and second fine grooves (802); the two groups of C-shaped transverse grooves (801) are symmetrically arranged, one side of the C-shaped transverse groove (801) extends to the bottom of the longitudinal groove (1), the other side of the C-shaped transverse groove (801) is connected to the second fine groove (802), and the third side of the C-shaped transverse groove (801) is connected to the bottom of the second fine groove (802) and the longitudinal groove (1) at both ends; The third linear fractal transverse groove (9) comprises a fractal rectangular transverse groove (901), a fractal third fine groove (902), and a fractal angular transverse groove (903); two corners of the rectangular transverse groove (901) extend to the bottom of the longitudinal groove (1), two ends of the third fine groove (902) extend to the bottom of the longitudinal grooves (1) on both sides, and one side of the angular transverse groove (903) extends to the bottom of the longitudinal groove (1); The included angles of the V-shaped transverse groove (701), the C-shaped transverse groove (801) and the angular transverse groove (903) are all 45° to 60°; The width of the grooves on the first linear fractal transverse groove (7), the second linear fractal transverse groove (8) and the third linear fractal transverse groove (9) are all 0.5 mm to 2 mm, and the depth is 0.5 mm to 2 mm.

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