Tire tread pattern and tire

Abstract

The present application provides a kind of tire tread pattern, by being provided with inclined groove on pattern bar 1, air flow is transmitted to both sides, so as to achieve the left and right of noise energy reduction. Pattern bar is provided with at least three inclined grooves, which can ensure that the tire has driving performance, can provide steering performance, can also prevent tire from being worn, and can also achieve noise reduction. In the present application, the inclined groove is provided with a vine bionic structure, each inclined groove includes parallel inclined grooves, and adjacent parallel inclined grooves have a distance in the length direction, and the opposite ends of adjacent parallel inclined grooves are connected by a straight line connecting groove, at least one end of the inclined groove is connected with the pattern groove through the inclined groove, and the noise of the tread pattern can be reduced through multiple bending, while the tensile and torsional properties of the pattern bar are improved, low noise, strong climbing effect is realized.

Description

Technical Field

[0001] This invention relates to tire tread patterns, and more particularly to a tire tread pattern and tire, especially suitable for use in all wheel positions of electric buses. Background Technology

[0002] With the development of public transportation, urban roads are increasingly interconnected, while rural roads are often narrow, hindering the rapid passage of two vehicles and leading to more frequent braking and turning. Therefore, tires for electric buses need to prioritize noise pollution, energy efficiency, and protection against uneven wear. Since electric buses have no engine noise, tire noise is more easily perceived by users, making low-noise design crucial for enhancing customer experience. Research shows that when vehicle speeds exceed 60 km / h, tire tread noise becomes the primary source of vehicle noise, accounting for over 30%. Regulations on vehicle noise are becoming increasingly stringent in various countries, further driving the tire industry to optimize noise reduction designs. Simultaneously, global focus on carbon emissions and fuel efficiency is pushing tires towards lower rolling resistance and superior fuel economy. Developing tires that meet the requirements for low noise, low rolling resistance, superior fuel economy, and protection against uneven wear is imperative for tire manufacturers.

[0003] The existing electric bus tire EP3498496A1 does not have good anti-wear performance, and its noise reduction needs to be improved. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a tire tread pattern and tire that can ensure driving performance, provide handling performance, prevent uneven tire wear, and reduce noise; it is especially suitable for use as tires on all wheels of electric buses.

[0005] The object of the present invention is achieved in the following manner: a tire tread pattern includes tread strips and tread grooves arranged along the circumference of the tire, each tread strip having at least three oblique grooves; each oblique groove includes parallel oblique grooves, and adjacent parallel oblique grooves are spaced apart in the length direction, and adjacent parallel oblique grooves are connected at opposite ends by straight connecting grooves, and at least one end of the oblique groove is connected to the tread groove through the oblique groove; the oblique grooves on the same tread strip arranged along the circumference are arranged in parallel.

[0006] The parallel inclined grooves consist of inclined groove I and inclined groove II, with at least one end of the inclined groove connected to the patterned groove via inclined groove I. The distance between inclined groove I and inclined groove II in the vertical direction is h1, the straight-line distance between the two ends of the inclined groove is L1, and the physical length formed along the bending path between the two ends of the inclined groove is l1. The value of L1 / l1 ranges from 0.9 to 1, and the value of h1 / L1 ranges from 0.05 to 0.1.

[0007] The parallel inclined grooves consist of inclined groove I, inclined groove II, and inclined groove III. At least one end of the inclined groove is connected to the patterned groove through inclined groove I. The ends of inclined grooves II and III in the length direction are connected by straight connecting grooves. The inclined grooves connected to the ends of inclined grooves II and III in the length direction are respectively inclined groove I. The distance between inclined groove I and inclined groove II in the vertical direction is h1, the distance between inclined groove I and inclined groove III in the vertical direction is h2, the straight distance between the two ends of the inclined groove is L1, and the physical length formed along the bending path between the two ends of the inclined groove is l1. The value of L1 / l1 ranges from 0.9 to 1, the value of h1 / L1 ranges from 0.05 to 0.1, and the value of h2 / L1 ranges from 0.05 to 0.1.

[0008] The two ends of the inclined groove I are connected to the inclined groove by straight connecting grooves. One end of the inclined groove I is connected to the inclined groove II by a straight connecting groove, and the other end of the inclined groove I is connected to the inclined groove III by a straight connecting groove. The length and width of the inclined groove II and the inclined groove III are the same, and h1 and h2 are equal.

[0009] The tread pattern includes the crown tread pattern and the shoulder tread pattern. The tread groove on the inner side of the shoulder tread pattern is called the shoulder tread groove. The oblique groove on the crown tread pattern is connected to the tread groove on both sides of the crown tread pattern, and the oblique groove on the shoulder tread pattern is connected to the shoulder tread groove.

[0010] The oblique grooves on the tread pattern are oblique grooves I. The two ends of oblique groove I are connected to the tread grooves through different oblique grooves I located on the same straight line. The oblique grooves on the tire shoulder tread are called tire shoulder oblique grooves. One end of the tire shoulder oblique groove is connected to the tire shoulder tread groove through oblique groove I, and the other end is located on the tire shoulder tread and is connected to the circular groove.

[0011] The oblique grooves on the tread pattern are called oblique grooves I, with a width of 1-5mm. The depth of oblique grooves I is greater than half the depth of the tread grooves but less than the depth of the tread grooves. The width of the oblique groove on the tire shoulder is 1-5mm, and the depth is less than half the depth of the tread groove; the diameter of the circular groove is greater than the width of the oblique groove on the tire shoulder, and is between 2-5mm.

[0012] The zigzag oblique grooves on the tire shoulder tread strip include oblique groove II and oblique groove III, which are alternately arranged on the same tire shoulder tread strip; all tread grooves are zigzag tread grooves, and there are recesses in the tread grooves that connect to the oblique grooves on the tread strip; the length of oblique groove II is greater than that of oblique groove III, and the tire shoulder tread grooves connect to the recesses in the tire shoulder tread strips that connect to oblique groove III. The depth of the oblique grooves I and II on the tire shoulder tread pattern is 1.5-3mm.

[0013] The groove pattern has the following characteristics on the transverse section: the maximum width at the bottom is b1, the length dimension in the depth direction is a1, the width of the upper connecting section at the bottom is b2, the length dimension in the depth direction is a2, and the range of a1 / a2 is 0.5-0.8; the range of b1 / b2 is 1.1-1.9.

[0014] The tread grooves consist of two narrower central tread grooves and two wider shoulder tread grooves, with the width ratio of the shoulder tread grooves to the central tread grooves being 1.5-2.5:1. In the depth direction, the middle groove of the pattern is narrow in the middle and wide at the top and bottom ends; The width of the middle groove gradually increases outward from the upper end, forming a trumpet shape. The bottom of the middle groove is an arc, and the diameter of the arc is greater than the width of the narrowest part of the middle groove at the upper end of the arc. The ratio of the diameter of the arc to the width of the narrowest part of the middle groove at the upper end of the arc is greater than 1.2:1 and less than 1.7:1. The tire tread and shoulders are closed-shoulder designs, and the product's running surface width reaches over 240mm. The tire tread section has two lengths, long and short, and the long and short sections are arranged irregularly. The tread pattern is either non-directional or bidirectional, and the tread pattern is symmetrical at the center.

[0015] Compared to existing technologies, this invention provides a tire tread pattern that uses oblique grooves on the tread strip 1 to allow airflow to be transmitted to both sides, thereby reducing noise energy. The tread strip has at least three oblique grooves, which ensures tire traction, provides handling performance, prevents uneven tire wear, and reduces noise. In this application, the oblique grooves are designed as a vine-like biomimetic structure—each oblique groove includes parallel oblique slots, and adjacent parallel oblique slots are spaced apart in the length direction. Adjacent parallel oblique slots are connected at opposite ends by straight connecting slots. At least one end of each oblique groove is connected to the tread groove via an oblique slot. Through multiple bending, tread noise is reduced while improving the tensile and torsional strength of the tread strip, achieving low noise and strong adhesion. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention.

[0017] Figure 2A It is a cross-sectional schematic diagram of the patterned groove, especially the middle patterned groove; Figure 2B It is a cross-sectional schematic diagram of the patterned groove, especially the middle patterned groove; Figure 2C It is a cross-sectional schematic diagram of the patterned groove, especially the middle patterned groove; Figure 2DIt is a cross-sectional schematic diagram of the patterned groove, especially the middle patterned groove; Figure 2E It is a cross-sectional schematic diagram of the patterned groove, especially the middle patterned groove; Figure 2F It is a cross-sectional schematic diagram of the patterned groove, especially the middle patterned groove.

[0018] Figure 3 This is a schematic diagram of a type of oblique trench.

[0019] Figure 4 It is the tread pattern in existing technology.

[0020] Among them, tread strip 1, tread groove 2, vertical section I 20, arc I 21, vertical section II 22, inclined line enlargement section 23, equilateral trapezoidal section 24, vertical section III 25, gradually shrinking section 26, oblique groove 3, oblique groove I 31, shoulder oblique groove 32, oblique groove II 33, oblique groove III 34, oblique groove 4, oblique groove I 40, oblique groove II 41, oblique groove III 42, straight connecting groove 5, crown tread strip 6, shoulder tread strip 7, circular groove 70, shoulder tread groove 8, and middle tread groove 9. Detailed Implementation

[0021] The present invention will now be described in detail with reference to specific embodiments. It should be noted that these embodiments are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Those skilled in the art can make some non-essential improvements and adjustments based on the above description of the present invention.

[0022] like Figures 1-3 As shown, a tire tread pattern includes tread strips 1 and tread grooves 2 arranged along the circumference of the tire. Each tread strip 1 has at least three oblique grooves 3. Each oblique groove 3 includes parallel oblique grooves 4, and adjacent parallel oblique grooves are spaced apart in the length direction. Adjacent parallel oblique grooves 4 are connected to opposite ends by straight connecting grooves 5. At least one end of the oblique groove 3 is connected to the tread groove through the oblique groove 4. The oblique grooves 3 on the same tread strip arranged along the circumference are arranged in parallel.

[0023] By setting oblique grooves on the tread strip 1, airflow is transmitted to both sides, thereby reducing noise energy. The tread strip has at least three oblique grooves, which ensures tire traction, provides handling performance, prevents uneven tire wear, and reduces noise. In this application, the oblique grooves are designed as a vine-like biomimetic structure—each oblique groove includes parallel oblique slots, and adjacent parallel oblique slots are spaced apart in the length direction. Adjacent parallel oblique slots are connected to their opposite ends by straight connecting slots. At least one end of each oblique groove is connected to the tread groove. Through multiple bending, tread noise can be reduced while improving the tensile and torsional strength of the tread strip, achieving low noise and strong adhesion.

[0024] The parallel inclined groove 4 is composed of inclined groove I 40 and inclined groove II 41. At least one end of the inclined groove 3 is connected to the patterned groove 2 through inclined groove I 40. The distance between inclined groove I 40 and inclined groove II 41 in the vertical direction is h1, the straight-line distance between the two ends of the inclined groove 3 is L1, and the physical length formed along the bending path between the two ends of the inclined groove 3 is l1. The value of L1 / l1 ranges from 0.9 to 1, and the value of h1 / L1 ranges from 0.05 to 0.1.

[0025] The parallel inclined groove 4 is composed of inclined groove I 40, inclined groove II 41, and inclined groove III 42. At least one end of the inclined groove 3 is connected to the patterned groove 2 through inclined groove I 40. The ends of inclined groove II 41 and inclined groove III 42 in the length direction are connected to the inclined grooves by straight connecting grooves 5. The inclined grooves connected to the ends of inclined groove II 41 and inclined groove III 42 in the length direction are inclined groove I 40. The distance between inclined groove I 40 and inclined groove II 41 in the vertical direction is h1, the distance between inclined groove I 40 and inclined groove III 42 in the vertical direction is h2, the straight distance between the two ends of the inclined groove 3 is L1, and the physical length formed along the bending path between the two ends of the inclined groove 3 is l1. The value of L1 / l1 ranges from 0.9 to 1, the value of h1 / L1 ranges from 0.05 to 0.1, and the value of h2 / L1 ranges from 0.05 to 0.1.

[0026] Preferably, the two ends of the inclined groove I 40 are connected to the inclined groove via straight connecting grooves. One end of the inclined groove I 40 is connected to the inclined groove II 41 via a straight connecting groove, and the other end of the inclined groove I is connected to the inclined groove III 42 via a straight connecting groove. The inclined groove II 41 and the inclined groove III 42 have the same length and width, and h1 and h2 are equal.

[0027] Tread pattern 1 includes crown tread pattern 6 and shoulder tread pattern 7. The tread groove on the inner side of shoulder tread pattern 7 is called shoulder tread groove 8. The oblique groove on crown tread pattern 6 is connected to the tread grooves on both sides of crown tread pattern 6, and the oblique groove 3 on shoulder tread pattern 7 is connected to shoulder tread groove 8. This structural design allows the tread grooves and oblique grooves of the tire tread pattern to be connected in both directions, which can reduce energy and thus reduce noise.

[0028] The oblique grooves on the tread pattern 6 are oblique grooves I31, with a width of 1-5mm. The depth of oblique groove I31 is greater than half the depth of tread groove 2 but less than the depth of the tread groove. The greater depth of oblique groove I31 ensures sufficient traction performance even in the later stages of tire use. The oblique groove I31 connects to the tread groove on the left and right sides, which improves the tire's water drainage and air exhaust performance, ensuring good grip on wet and slippery roads.

[0029] The two ends of the oblique groove I31 are connected to the patterned groove 2 through different oblique grooves I40 located on the same straight line.

[0030] The oblique groove on the shoulder tread 7 is the shoulder oblique groove 32. One end of the shoulder oblique groove 32 is connected to the shoulder tread groove through the oblique groove I 40, and the other end is located on the shoulder tread and connected to the circular groove 70.

[0031] The length and width of the oblique grooves I 40, II 41, and III 42 of the shoulder oblique groove 32, as well as the distance between oblique groove I 40 and oblique groove II 41 and oblique groove III 42 in the vertical direction, may be the same or different.

[0032] The zigzag oblique grooves 32 on the shoulder tread slab 7 include oblique grooves II 33 and III 34. Oblique grooves II 33 and III 34 are alternately arranged on the same shoulder tread slab. The length of oblique groove II 33 is greater than that of oblique groove III 34. The two grooves run in the same direction or are parallel. This structural design can not only prevent uneven tire wear, but also reduce noise.

[0033] The width of oblique grooves II33 and III34 is 1-5mm, and their depth is less than half the depth of the tread grooves. The diameter of the circular groove 70 is greater than the width of oblique grooves II33 and III34, generally between 2-5mm. The shallow depth of oblique grooves II33 and III34 provides some driving and handling performance in the early stages of tire use. They also complement the oblique grooves on the tread blocks, creating a more harmonious transition and a more aesthetically pleasing appearance.

[0034] All two tread grooves are zigzag grooves, which improve the tire's driving performance and passability.

[0035] Since all tread grooves 2 are zigzag grooves, there are recesses in the tread strips, and these recesses connect to oblique grooves on the tread strips. The length of oblique groove II 33 is greater than that of oblique groove III 34, and the shoulder tread groove connects to the recesses in the shoulder tread strips via oblique groove III 34.

[0036] The tread grooves consist of two narrower central tread grooves 9 and two wider shoulder tread grooves 8.

[0037] The middle tread groove 9 is a zigzag groove, which can maximize the tread saturation of the tire while ensuring good driving performance, thereby increasing tire mileage.

[0038] By adjusting the number, width, and depth of the zigzag grooves on the tire tread, it can be adapted to more usage scenarios, such as city buses and long-distance tour buses.

[0039] The central groove exhibits a wide bottom and a narrower upper connecting section on the transverse cross-section, which can be one of the following scenarios: (1) The upper bottom connecting section is a vertical section I20, and the bottom is an arc I21. The vertical section I20 and the arc I21 are connected by a rounded corner. The maximum width of the bottom arc I21 is b1, and the length dimension in the depth direction is a1. The width of the vertical section I is b2, and the length dimension in the depth direction is a2. The range of a1 / a2 is generally 0.5-0.8; the range of b1 / b2 is generally 1.1-1.9; thus achieving a noise reduction effect. If the ratio is too large, it will reduce the service life. If the ratio is too small, it will not achieve a noise reduction effect. Figure 2A ; (2) The upper bottom connecting section is vertical section I20, and the bottom is vertical section II22. The connection between vertical section I20 and vertical section II22, as well as the corners at the bottom and top of vertical section II, are all transitioned by rounded corners. The width of the bottom vertical section II is b1, and its length in the depth direction is a1. The width of vertical section I is b2, and its length in the depth direction is a2. The ratio of a1 / a2 is generally 0.5-0.8; the ratio of b1 / b2 is generally 1.1-1.9; thus achieving a noise reduction effect; such as Figure 2B ; (3) The upper bottom connecting section is a vertical section I20, and the bottom is an enlarged inclined line section 23. The connection between the vertical section I20 and the enlarged inclined line section 23, as well as the corners at the bottom of the enlarged inclined line section, are all rounded. The maximum width of the enlarged inclined line section is b1, and its length in the depth direction is a1. The width of the vertical section I is b2, and its length in the depth direction is a2. The ratio of a1 / a2 is generally 0.5-0.8; the ratio of b1 / b2 is generally 1.1-1.9. This achieves a noise reduction effect. Figure 2C ; (4) The upper bottom connecting section is a vertical section I20, and the bottom is an equilateral trapezoidal section 24 that is wider at the top and narrower at the bottom. The connection between the vertical section I20 and the equilateral trapezoidal section 24, as well as the corners at the bottom and top of the equilateral trapezoidal section, are all transitioned by rounded corners. The maximum width of the equilateral trapezoidal section is b1, and its length in the depth direction is a1. The width of the vertical section I is b2, and its length in the depth direction is a2. The range of a1 / a2 is generally 0.5-0.8; the range of b1 / b2 is generally 1.1-1.9; thus achieving a noise reduction effect; such as Figure 2D ; (5) The upper bottom connecting section is vertical section I20, the bottom is vertical section III25 and the gradually narrowing section 26 connecting the lower part of vertical section III25. The connection between vertical section I20 and vertical section III25, the connection between vertical section III25 and gradually narrowing section 26, the upper corner of vertical section III25 and the lower corner of gradually narrowing section 26 are all transitioned by rounded corners. The maximum width of vertical section III25 and gradually narrowing section 26 is b1, and the length dimension in the depth direction is a1. The width of vertical section I is b2, and the length dimension in the depth direction is a2. The range of a1 / a2 is generally 0.5-0.8; the range of b1 / b2 is generally 1.1-1.9; thus achieving a noise reduction effect. Figure 2E .

[0040] The bottom of the vertical segment II 22, the enlarged inclined line segment 23, the equilateral trapezoidal segment 24, and the gradually narrowing segment 26 is an arc-shaped bottom, preferably a rounded bottom. For example... Figure 2F .

[0041] As shown in the cross-sectional view of Figure 2, in the depth direction, the central tread groove 9 adopts a dumbbell-shaped design, narrow in the middle and wide at both ends. Under pressure, the central tread groove can close, effectively making the center of the tire crown a single piece, which can reduce the deformation of the tire tread pattern to a certain extent, reducing tire heat generation and rolling resistance. The width of the central tread groove 9 gradually increases outward from the upper end, forming a trumpet shape, which can provide a certain degree of anti-stone trapping function; the bottom of the central tread groove is an arc, and the diameter of the arc is larger than the width of the connecting section at the bottom, reducing stress concentration at the bottom of the groove.

[0042] The ratio of b1 to b2 is greater than 1.2:1 and less than 1.7:1, thus achieving a good noise reduction effect.

[0043] The width of the central pattern groove is relatively narrow, ranging from 1 to 5 mm.

[0044] The shoulder tread groove 8 is a wider, zigzag tread groove, with a width ratio of 1.5-2.5:1 to the middle tread groove 9. The bottom of the groove is designed with full rounded corners, which can reduce stress concentration at the bottom of the groove.

[0045] The shoulder tread groove 8 and the middle tread groove 9 have the same depth.

[0046] The tire features a closed shoulder design, resulting in a tread width exceeding 240mm. Compared to the standard 275mm width for this specification, this tread width is essentially at the upper limit of acceptable limits. The depth of the diagonal grooves I and II on the shoulder tread pattern is 1.5-3mm. Such shallow depth would reduce tire mileage; therefore, the increased tread width ensures optimal mileage performance. Simultaneously, the shallow tread depth, combined with the closed shoulder design, prevents excessive heat generation and maintains tire lifespan. The overall shallow tread depth, widened tread width, and closed shoulder design ensure both mileage and reduced rolling resistance, thereby improving fuel economy and overall operating costs.

[0047] Tire tread sections have both long and short lengths, which disrupts the noise frequency distribution and prevents the superposition and resonance of single-frequency sound waves generated by the tire at high speeds, thereby reducing the perceptible noise level. The irregular arrangement of long and short sections further disrupts the noise frequency distribution, thus reducing the perceptible noise level.

[0048] Overall, the variable pitch and irregular arrangement design of the tire can minimize tire noise at high speeds; the high saturation design of the tread pattern can reduce tire rolling resistance while ensuring tire driving performance, thereby reducing overall vehicle fuel consumption.

[0049] The tread pattern is either non-directional or bidirectional, and the tread pattern is symmetrical at the center.

[0050] compared to Figure 4 The existing tire tread patterns have a measured noise level as high as 73dB, while the tire tread pattern of this application has a lower tire noise level, reaching 71dB, and the measured noise level is significantly reduced.

[0051] This invention provides a tire tread pattern suitable for urban electric buses; suitable for driving on ordinary and high-quality roads; with low tire noise, reaching 71dB; excellent driving performance and passability; fewer tread stripes, resulting in lower heat generation and rolling resistance; a more aesthetically pleasing design with staggered, zigzag oblique grooves on the shoulder; and a widened tread with high saturation design to ensure superior single-trip mileage performance.

[0052] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. It should be noted that for those skilled in the art and any person skilled in the art, any equivalent substitutions or changes made to the technical solution and inventive concept of the present invention without departing from the overall concept of the present invention, as well as any changes and improvements made, should also be considered within the scope of protection of the present invention.

Claims

1. A tire tread pattern, characterized in that: It includes tread strips (1) and tread grooves (2) arranged along the circumference of the tire. Each tread strip (1) has at least three oblique grooves (3). Each oblique groove (3) includes parallel oblique grooves (4), and adjacent parallel oblique grooves are spaced apart in the length direction. The opposite ends of adjacent parallel oblique grooves (4) are connected by straight connecting grooves (5). At least one end of the oblique groove (3) is connected to the tread groove through the oblique groove (4). The oblique grooves (3) on the same tread strip arranged along the circumference are arranged in parallel.

2. The tire tread pattern according to claim 1, characterized in that: The parallel oblique groove (4) is composed of oblique groove I (40) and oblique groove II (41), and at least one end of the oblique groove (3) is connected to the patterned groove (2) through oblique groove I (40); The distance between the inclined groove I (40) and the inclined groove II (41) in the vertical direction is h1, the straight distance between the two ends of the inclined groove (3) is L1, the physical length formed by the two ends of the inclined groove (3) along the bending path is l1, the value of L1 / l1 is between 0.9 and 1, and the value of h1 / L1 is between 0.05 and 0.

1.

3. The tire tread pattern according to claim 1, characterized in that: The parallel oblique groove (4) is composed of oblique groove I (40), oblique groove II (41) and oblique groove III (42). At least one end of the oblique groove (3) is connected to the patterned groove (2) through oblique groove I (40). The ends of oblique groove II (41) and oblique groove III (42) in the length direction are connected to the oblique grooves through straight connecting grooves (5). The oblique grooves connected to the ends of oblique groove II (41) and oblique groove III (42) in the length direction are oblique groove I (40); oblique groove I (40) The distance between the inclined groove II (41) and the inclined groove I (40) and the inclined groove III (42) in the vertical direction is h1, the distance between the two ends of the inclined groove (3) is h2, the straight distance between the two ends of the inclined groove (3) is L1, the physical length formed by the two ends of the inclined groove (3) along the bending path is l1, the value of L1 / l1 is between 0.9 and 1, the value of h1 / L1 is between 0.05 and 0.1, and the value of h2 / L1 is between 0.05 and 0.

1.

4. The tire tread pattern according to claim 3, characterized in that: The two ends of the inclined groove I (40) are connected to the inclined groove by straight connecting grooves. One end of the inclined groove I (40) is connected to the inclined groove II (41) by a straight connecting groove, and the other end of the inclined groove I is connected to the inclined groove III (42) by a straight connecting groove. The length and width of the inclined groove II (41) and the inclined groove III (42) are the same, and h1 and h2 are equal.

5. The tire tread pattern according to any one of claims 2-4, characterized in that: The tread pattern (1) includes the crown tread pattern (6) and the shoulder tread pattern (7). The tread groove on the inner side of the shoulder tread pattern (7) is the shoulder tread groove (8). The oblique groove on the crown tread pattern (6) is connected to the tread groove on both sides of the crown tread pattern (6), and the oblique groove (3) on the shoulder tread pattern (7) is connected to the shoulder tread groove (8).

6. The tire tread pattern according to claim 5, characterized in that: The oblique grooves on the tread pattern strip (6) are oblique grooves I (31), and the two ends of oblique grooves I (31) are connected to the pattern groove (2) through different oblique grooves I (40) located on the same straight line. The oblique groove on the shoulder tread strip (7) is the shoulder oblique groove (32). One end of the shoulder oblique groove (32) is connected to the shoulder tread groove through the oblique groove I (40), and the other end is located on the shoulder tread strip and connected to the circular groove (70).

7. The tire tread pattern according to claim 6, characterized in that: The oblique grooves on the tread pattern strips (6) are oblique grooves I (31), with a width of 1-5 mm. The depth of oblique grooves I (31) is greater than half the depth of the tread grooves (2) and less than the depth of the tread grooves. The width of the oblique groove (32) on the tire shoulder is 1-5mm, and the depth is less than half the depth of the tread groove; the diameter of the circular groove (70) is greater than the width of the oblique groove (32) on the tire shoulder, and is between 2-5mm.

8. The tire tread pattern according to claim 7, characterized in that: The zigzag oblique grooves (32) on the shoulder tread strip (7) include oblique groove II (33) and oblique groove III (34), which are alternately arranged on the same shoulder tread strip; the tread grooves (2) are all zigzag tread grooves, and there are tread grooves that extend into the tread strip. The tread grooves extend into the tread strip and connect to the oblique grooves on the tread strip; the length of oblique groove II (33) is greater than that of oblique groove III (34), and the shoulder tread grooves extend into the shoulder tread strip and connect to the oblique groove III (34); The depth of the oblique grooves I and II on the tire shoulder tread pattern is 1.5-3mm.

9. The tire tread pattern according to claim 1, characterized in that: The tread grooves consist of two narrower intermediate tread grooves (9) and two wider shoulder tread grooves (8), with the width ratio of the shoulder tread grooves (8) to the intermediate tread grooves (9) being 1.5-2.5:1; In the depth direction, the middle groove (9) is narrow in the middle and wide at the top and bottom ends; The width of the middle groove (9) gradually increases outward from the upper end, forming a trumpet shape, while the shoulder groove (8) is a wider, zigzag groove. The tire tread and shoulders are closed-shoulder designs, and the product's running surface width reaches over 240mm. The tire tread section has two lengths, long and short, and the long and short sections are arranged irregularly. The tread pattern is either non-directional or bidirectional, and the tread pattern is symmetrical at the center.

10. A tire, characterized in that: The tire tread pattern is the tire tread pattern described in any one of claims 1-9.

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