Off-road tire

Abstract

The invention relates to the technical field of tires, in particular to an off-road tire which comprises a tread structure, and the tread structure is divided into a center part and side parts symmetrically distributed on the two sides of the center part in the axial direction; the central part consists of a plurality of groups of first pattern groups and second pattern groups which are arranged in an array, and the side parts consist of a plurality of groups of third pattern blocks and fourth pattern blocks which are arranged in an array; longitudinal grooves are formed in the junctions of the center part and the side parts, the longitudinal grooves penetrate through the center part and the two side parts, two long-strip-shaped pattern ribs are regularly arranged at the groove bottoms, located on the side parts, of the longitudinal grooves, and the first pattern groups and the second pattern groups are connected in a staggered mode through Y-shaped crossed structures. According to the cross-country tire, stress distribution is optimized through the Y-shaped cross structure, and the design of the longitudinal grooves, the pattern ribs, the step blocks and the like is combined, so that the road holding force, the water and mud discharging capacity and the service life of the cross-country tire on a non-paved road surface are remarkably improved, and meanwhile, the comfort and low-noise characteristics of the paved road surface are considered.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tires, in particular to an off-road tire. BACKGROUND

[0002] In recent years, with the rise and popularity of off-road sports, the market demand for off-road tires continues to rise, and numerous off-road racing venues have emerged across the country, such as uninhabited areas, Huker Road, Alashan Hero Meeting, etc., providing rich activity space for off-road enthusiasts. In off-road scenarios, vehicles travel on non-paved roads such as sand and mud, and the traction performance of the tire becomes a core indicator to ensure driving safety and traffic efficiency.

[0003] In the prior art, in order to improve the traction performance of off-road tires, a design scheme of increasing the pattern groove area in the tread pattern is usually adopted to enhance the crossing ability of the tire on sand and mud. However, this design still has some defects: on the one hand, excessive increase of the pattern groove area will cause significant performance decline of the tire when driving on paved roads, which is specifically manifested as increased noise and rolling resistance, thereby increasing vehicle fuel consumption; on the other hand, the increase of the pattern groove area will also reduce the overall wear resistance of the tire and the adhesion on non-paved roads, and increase the deficiencies of the tire in self-cleaning, handling stability, stress dispersion uniformity and other aspects under complex road conditions, which is difficult to meet the high requirements of off-road enthusiasts on the comprehensive performance of the tire.

[0004] Therefore, it is necessary to develop an off-road tire that can balance the performance on non-paved roads and the performance on paved roads, and optimize the multi-dimensional use performance. SUMMARY

[0005] The present application provides an off-road tire to solve the problem that the overall wear resistance of the off-road tire is reduced, the stress is not evenly dispersed, and the self-cleaning performance is insufficient under complex road conditions due to the excessive increase of the pattern groove area in the traditional off-road tire in the prior art.

[0006] The present application provides an off-road tire, comprising:

[0007] a tread structure, the tread structure being divided into a center part and side parts symmetrically distributed on both sides of the center part along the axial direction;

[0008] the center part is composed of a plurality of groups of arrayed first patterns and second patterns, and the side parts are composed of a plurality of groups of arrayed third patterns and fourth patterns;

[0009] a longitudinal groove is arranged at the junction of the center part and the side parts, the longitudinal groove penetrates the center part and the two side parts, and a long strip-shaped pattern rib is regularly arranged at the groove bottom of the side part portion, and the first pattern group and the second pattern group are connected by a "Y-shaped intersection" structure;

[0010] The edge of the pattern block of the center part and the side part is provided with a stepped block with a height of mm.

[0011] Preferably, the first pattern group in the center part and the third pattern block and the fourth pattern block in the side part are arranged in an alternating array.

[0012] Preferably, any one group of the first pattern group is composed of two first pattern blocks that are centrally symmetrical, and any one group of the second pattern group is composed of two second pattern blocks that are centrally symmetrical.

[0013] The first pattern block and the second pattern block are connected by the "Y-shaped intersection" structure.

[0014] Preferably, the "Y-shaped intersection" structure includes a side angle on both sides of the "Y" shape and a central angle in the middle part, and the side angle and the central angle are obtuse angle structures with an angle range of 100° to 150°.

[0015] Preferably, the third pattern block and the fourth pattern block are irregular irregular trapezoidal structures, and one side of the fourth pattern block is connected to one side of the "Y-shaped intersection" structure.

[0016] Preferably, the width of the longitudinal groove is 10% to 15% of the width of the tread, and the depth is 60% to 70% of the height of the first pattern block or the second pattern block, and the inner wall of the longitudinal groove is also provided with concave-convex texture to enhance the drainage and mud removal efficiency and the tire traction performance.

[0017] Preferably, the pattern ribs are uniformly distributed at the bottom of the longitudinal groove, and the pattern ribs are arranged between any one group of the third pattern block and the fourth pattern block.

[0018] Preferably, the stepped block is continuously arranged along the edge of each pattern block, and the width is 1.5 to 3 mm, and the stepped surface of the stepped block is also provided with anti-skid texture.

[0019] Preferably, the surface of the first pattern block, the second pattern block, the third pattern block, and the fourth pattern block is provided with a surface fine pattern groove with a depth of 1.5 to 2 mm.

[0020] Preferably, the tread structure adopts a high wear-resistant rubber composite material with a Shore hardness of 60 to 70 HA, and the material hardness of the pattern rib is higher than that of the tread structure.

[0021] The beneficial effects of the present application are as follows:

[0022] The off-road tire of this application optimizes stress distribution through a "Y-shaped cross" structure. Combined with longitudinal grooves, tread ribs, and step blocks, it significantly improves the off-road tire's grip, water and mud drainage capabilities, and service life on unpaved roads. At the same time, it takes into account its comfort and low noise characteristics on paved roads. The "Y-shaped cross" structure allows the tread blocks to be combined and connected to form a unique biomimetic "antelope" pattern, which enhances its overall aesthetics and gives it a more distinctive visual identity to enhance product recognition.

[0023] Furthermore, by adopting a "Y-shaped cross" structure, the stress in the center of the tread structure is distributed more evenly, improving the tire's service life. The longitudinal grooves set at the junction of the center and the sidewalls, and the long strip-shaped tread ribs regularly arranged at the bottom of the longitudinal grooves, not only improve the tire's traction performance but also enable it to drain water and mud in time, giving it stronger self-cleaning properties. In addition, the stepped blocks located at the edges of the tread blocks in the center and sidewalls increase the contact area of ​​the off-road tire, thereby improving the tire's handling performance. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the tread structure of an off-road tire provided in an embodiment of this application;

[0026] Figure 2 This is an enlarged view of the "Y-shaped intersection" structure in this application.

[0027] Figure label:

[0028] 1. First patterned block; 2. Second patterned block; 3. Third patterned block; 4. Fourth patterned block; 5. Longitudinal groove; 6. Patterned rib; 7. Stepped block; 8. "Y-shaped intersection" structure; A. Central part; B. Side part; Ra, Side angle; Rb, Central angle. Detailed Implementation

[0029] The technical solutions of this application will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] The following is combined Figures 1-2This document describes the off-road tires provided in the embodiments of this application. Additionally, for the purpose of aiding understanding and differentiation, specific details are provided. Figure 1 Each patterned block is colored, with the first patterned block 1 marked in dark yellow; the second patterned block 2 marked in light brown; the third patterned block 3 marked in bright red; the fourth patterned block 4 marked in orange; the longitudinal groove 5 marked in light blue; the step block 7 marked in purple; and the "Y-shaped intersection" structure 8 marked in black.

[0031] Reference Figure 1 As shown in the embodiment of this application, the off-road tire includes a tread structure, which is divided into a central part A and side parts B symmetrically distributed on both sides of the central part A along the axial direction. The tire is suitable for SUVs or off-road vehicles. The tread depth is 12-18 mm, the overall width is 220-280 mm, and it is made of high wear-resistant rubber composite material with a Shore hardness of 60-70 HA.

[0032] The central part A consists of multiple arrays of first and second pattern groups, which are arranged alternately. The spacing between two adjacent first and second pattern groups is between 16 and 20 mm. Each first pattern group consists of two centrally symmetrical first pattern blocks 1, and each second pattern group consists of two centrally symmetrical second pattern blocks 2. The first pattern blocks 1 and the second pattern blocks 2 are connected by a "Y-shaped cross" structure 8.

[0033] Side B consists of multiple arrays of third patterned blocks 3 and fourth patterned blocks 4 arranged in an alternating array. Both third patterned blocks 3 and fourth patterned blocks 4 are irregular trapezoidal structures, and one side of the fourth patterned block 4 is connected to one side of the "Y-shaped cross" structure 8. The first patterned block 1, the second patterned block 2, and the fourth patterned block 4 form a biomimetic "antelope" pattern to enhance its overall aesthetics. The second patterned block 2 represents the antelope's head, the first patterned block 1 represents its forelimbs, and the "Y-shaped cross" structure 8 and the fourth patterned block 4 together form its torso.

[0034] By optimizing stress distribution through a "Y-shaped cross" structure, combined with designs such as longitudinal grooves, tread ribs, and stepped blocks, the off-road tire's grip, water and mud drainage capabilities, and service life on unpaved roads are significantly improved. At the same time, its comfort and low noise characteristics on paved roads are also taken into account. The "Y-shaped cross" structure allows the various tread blocks to be combined and connected to form a unique biomimetic "antelope" pattern, which enhances its overall aesthetics and gives it a more distinctive visual identity to enhance product recognition.

[0035] Please continue reading. Figure 2 ,like Figure 2The image shown is an enlarged view of the "Y-shaped intersection" structure.

[0036] In some specific embodiments, in the central part A, the first tread pattern group consists of two centrally symmetrical first tread blocks 1, and the second tread pattern group consists of two centrally symmetrical second tread blocks 2. The first tread blocks 1 and the second tread blocks 2 are interlaced and connected by a "Y-shaped cross" structure 8. This structure is "Y"-shaped, and its side angle Ra and center angle Rb are both obtuse angles, with an angle range between 100° and 150°, more preferably between 120° and 140°, to optimize its noise control and ground contact performance. The presence of the "Y-shaped cross" structure 8 not only enhances the mechanical linkage between each tread block, but also helps to disperse stress, thereby improving tire durability, effectively dispersing tread stress, reducing noise, and improving comfort and service life.

[0037] In some specific embodiments, a wide longitudinal groove 5 is provided at the junction of the central part A and the side part B. The longitudinal groove 5 runs through the central part A and the two side parts B. Its width is 8% to 12% of the tread width, and its depth is 60% to 70% of the height of the first tread block 1 or the second tread block 2, specifically 8 to 12 mm, preferably 10 mm. The inner wall of the longitudinal groove 5 is also provided with concave and convex textures to enhance its drainage and mud removal efficiency and tire traction performance.

[0038] In some specific embodiments, two long strip-shaped tread ribs 6 are regularly arranged at the bottom of the groove 5 on the side part B. The tread ribs 6 are evenly distributed at the bottom of the groove 5. Tread ribs 6 are provided between any group of third tread blocks 3 and fourth tread blocks 4. The width of the tread ribs 6 is 1 to 2 mm, and the height is 20% to 30% of the depth of the groove. They are evenly distributed between the third tread blocks 3 and the fourth tread blocks 4 to further improve the tire's traction and self-cleaning properties. The material hardness of the tread ribs 6 should be higher than that of the tread structure, and the difference in Shore hardness between the two should be 5 to 10 HA.

[0039] In some specific embodiments, the edges of the tread blocks in the central part A and the side part B are provided with step blocks 7 with a height of 2mm. The step blocks 7 are continuously arranged along the edges of each tread block and have a width of 1.5 to 3mm. The step surface of the step block 7 is also provided with anti-slip texture of 0.3 to 0.5mm to further increase its ground contact area and friction. The surface of each tread block is also provided with fine surface grooves with a depth of 1.5 to 2mm and a width of 0.8 to 1mm to improve the tire's grip on wet and slippery roads.

[0040] In some specific embodiments, the shoulder area of ​​side B is also provided with a laterally extending anti-friction strip 9, the height of which should be higher than the tread rib 6, in order to enhance the wear resistance of the tire sidewall and enhance its off-road performance.

[0041] This invention optimizes stress distribution through a "Y-shaped intersection" structure, and, combined with longitudinal grooves, patterned ribs, and stepped blocks, significantly improves the grip, drainage and mud removal capacity, and service life of unpaved roads, while also taking into account the comfort and low noise characteristics of paved roads.

[0042] In some specific embodiments, ...

[0043] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0047] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An off-road tire, characterized in that, It includes a tread structure, which is divided along the axial direction into a central part (A) and side parts (B) symmetrically distributed on both sides of the central part (A); The central part (A) is composed of multiple arrays of first and second pattern groups, and the side part (B) is composed of multiple arrays of third and fourth pattern blocks (3) and fourth pattern blocks (4). A longitudinal groove (5) is provided at the junction of the central part (A) and the side part (B). The longitudinal groove (5) runs through the central part (A) and the two side parts (B). Long strip-shaped patterned ribs (6) are regularly arranged at the bottom of the groove in the side part (B). The first pattern group and the second pattern group are connected by an interlaced "Y-shaped cross" structure (8). The edges of the patterned blocks in the central part (A) and the side part (B) are provided with stepped blocks (7) with a height of 2mm.

2. The off-road tire according to claim 1, characterized in that, The first pattern group and the second pattern group in the central part (A), as well as the third pattern block (3) and the fourth pattern block (4) in the side part (B), are arranged in an alternating array.

3. The off-road tire according to claim 2, characterized in that, Each group of the first pattern group consists of two centrally symmetrical first pattern blocks (1), and each group of the second pattern group consists of two centrally symmetrical second pattern blocks (2). The first patterned block (1) and the second patterned block (2) are interlocked through the "Y-shaped cross" structure (8).

4. The off-road tire according to claim 3, characterized in that, The "Y-shaped intersection" structure (8) includes side angles (Ra) on both sides of the "Y" shape and a central angle (Rb) in the middle. Both the side angles (Ra) and the central angle (Rb) are obtuse angles, with an angle range of 100° to 150°.

5. The off-road tire according to claim 4, characterized in that, The third pattern block (3) and the fourth pattern block (4) are both irregular trapezoidal structures, and one side of the fourth pattern block (4) is connected to one side of the "Y-shaped intersection" structure (8).

6. The off-road tire according to claim 5, characterized in that, The width of the longitudinal groove (5) is 10% to 15% of the tread width, and the depth is 60% to 70% of the height of the first tread block (1) or the second tread block (2). The inner wall of the longitudinal groove (5) is also provided with concave and convex textures to enhance drainage and mud removal efficiency and tire traction performance.

7. The off-road tire according to claim 6, characterized in that, The patterned ribs (6) are evenly distributed at the bottom of the longitudinal groove (5), and the patterned ribs (6) are provided between any group of the third patterned block (3) and the fourth patterned block (4).

8. The off-road tire according to claim 1, characterized in that, The stepped blocks (7) are continuously arranged along the edge of each patterned block, and their width is 1.5 to 3 mm. The stepped surface of the stepped blocks (7) is also provided with anti-slip texture.

9. The off-road tire according to claim 3, characterized in that, The surfaces of the first patterned block (1), the second patterned block (2), the third patterned block (3), and the fourth patterned block (4) are all provided with fine surface pattern grooves with a depth of 1.5 to 2 mm.

10. The off-road tire according to claim 1, characterized in that, The tread structure is made of high wear-resistant rubber composite material with a Shore hardness of 60-70HA. The material hardness of the tread rib (6) is higher than that of the tread structure.

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