A hybrid all-terrain tire to improve off-road performance

Abstract

This invention relates to the field of tire technology and discloses a hybrid all-terrain tire that improves off-road performance. The tread blocks on the tire tread interlock with each other in the circumferential and axial directions, and the tread grooves are evenly distributed, improving handling on off-road surfaces. The stepped tread edge design enhances traction while maintaining tire stability. The tread block chamfers improve tear resistance. Stone-expelling tread blocks accelerate the expulsion of stones. The staggered concave and convex shoulder profiles along the tire circumferential direction improve the tire's ability to get out of trouble on soft surfaces. The sidewall tread pattern enhances lateral grip and improves driving safety.

Description

Technical Field

[0001] This invention relates to the field of tire technology, and more specifically, to a hybrid all-terrain tire that improves off-road performance. Background Technology

[0002] In recent years, hybrid all-terrain tires (RT tires), which fall between all-terrain tires (AT tires) and mud tires (MT tires), have become popular in some countries and regions. Hybrid all-terrain tires balance on-road and off-road performance, making them suitable for off-road enthusiasts who frequently switch between on-road and unpaved surfaces. Their application areas are concentrated in Northwest China, North America, the Middle East deserts, and European outdoor adventure regions. RT tires require deep tread grooves, rugged tread blocks, and a robust sidewall design to improve puncture resistance and traction on mud and gravel roads. The key to designing hybrid all-terrain tires is how to meet performance requirements on paved roads while also improving off-road performance. Summary of the Invention

[0003] This invention addresses the shortcomings of existing technologies by providing a hybrid all-terrain tire that improves off-road performance.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A hybrid all-terrain tire for improving off-road performance includes a tread and a sidewall. The tread has three circumferentially extending alternating tread ribs and two main tread grooves arranged laterally along the tire tread. The three tread ribs, from left to right, include a first tread rib, a second tread rib, and a third tread rib. The two main tread grooves, from left to right, include a first main tread groove and a second main tread groove. The tread patterns of the first and third tread ribs are centrally symmetrical. The sidewall has evenly arranged sidewall tread blocks, and the tread patterns on both sides of the tread are centrally symmetrical.

[0006] The first tread rib is divided into evenly arranged first tread block units by the first transverse groove. The first tread block units are divided into first shoulder tread blocks and second shoulder tread blocks by the first secondary groove. The first transverse groove and the first secondary groove are both connected to the first main tread groove. The first tread rib extends from the tread crown to the shoulder. The shoulder on the first shoulder tread block adopts a convex shoulder profile, and the shoulder on the second shoulder tread block adopts a concave shoulder profile.

[0007] The second pattern rib is divided into evenly arranged second pattern block units by the second transverse groove. The second pattern block unit is divided into two first central pattern blocks and two second central pattern blocks by the intersecting second and third secondary grooves. The overall pattern of the second pattern block unit is centrally symmetrical. The second transverse groove and the second secondary groove are parallel to each other and are connected to the first main pattern groove and the second main pattern groove. The third secondary groove is connected to the second transverse grooves on both sides.

[0008] Both the first and second patterned block units have protrusions and recesses on their outlines, which can cooperate to form an interlocking structure; a first row of stone patterned blocks is set at the intersection of the first horizontal groove, the second horizontal groove, and the first main patterned groove; a second row of stone patterned blocks is set between adjacent first patterned block units.

[0009] The first and second shoulder tread blocks, the first center tread block, the second center tread block, and the second transverse groove all have stepped tread edges on their sides facing the first main tread groove.

[0010] Preferably, the first shoulder tread block, the second shoulder tread block, and the second row of stone tread blocks are all arrow-shaped, with the arrows pointing in the same circumferential direction of the tire; the first shoulder tread block and the second shoulder tread block, and the second shoulder tread block and the second row of stone tread blocks cooperate with each other to form an interlocking structure;

[0011] The first row of stone pattern blocks is shaped like an arrow, with the arrow pointing towards the second row of stone pattern blocks.

[0012] Preferably, the depth of the first row of stone pattern blocks and the second row of stone pattern blocks is 2.0~3.0mm from the tire bottom.

[0013] Preferably, the contour of the first shoulder tread block facing the first tread main groove is recessed into the first shoulder tread block to form a first concave part. The first concave part divides the contour of the first shoulder tread block into two segments. One segment is provided with a first trapezoidal tread edge at the location of the first shoulder tread block, and a second step-like tread edge is provided in the first concave part.

[0014] The second shoulder tread block has its side profile facing the first tread main groove recessed into the second shoulder tread block to form a second concave part. The second concave part divides the side profile into two segments. One segment is provided with a third trapezoidal tread edge at the location of the second shoulder tread block, and a fourth trapezoidal tread edge is provided in the second concave part.

[0015] The first central pattern block has its side profile facing the first pattern main groove recessed into the first central pattern block to form a third concave part. The third concave part divides the side profile into two segments. One segment is provided with a fifth-first trapezoidal pattern edge at the location of the first central pattern block, and the other segment is provided with a fifth-second trapezoidal pattern edge at the location of the first central pattern block. A sixth-step pattern edge is provided inside the third concave part.

[0016] A seventh trapezoidal pattern edge is provided on the side of the second central pattern block facing the first main groove. A fourth concave portion is formed by the side of the second central pattern block facing the second transverse groove, which divides the side profile into two segments. An eighth trapezoidal pattern edge is provided in the fourth concave portion. A ninth trapezoidal pattern edge is provided on the corner of the second central pattern block facing the second transverse groove and the third secondary groove.

[0017] Preferably, the step height difference between the edges of the first, third, fifth, fifth, seventh, and ninth trapezoidal patterns is 15% to 20% of the depth of the main groove of the pattern.

[0018] The height difference between the second, fourth, sixth, and eighth stepped pattern edges is 30% to 40% of the depth of the main groove of the pattern.

[0019] Preferably, the groove depth of the main groove of the pattern is 11.5~13.5mm.

[0020] Preferably, the first central patterned block has a chamfered corner at one corner facing the interior of the second patterned block unit.

[0021] Preferably, the first shoulder tread block, the first center tread block, the second center tread block, and the second shoulder tread block are provided with steel plate grooves inside; the width of the steel plate grooves is 0.7~0.8mm and the depth is 3~9mm.

[0022] Preferably, the first shoulder tread block, the second shoulder tread block, the first center tread block, and the second center tread block are all provided with a bottom protection block at the bottom of the outer groove of the tread crown portion.

[0023] Preferably, the depth of the tire bottom protection block is 1.0~2.0mm from the tire bottom, and the width is 2.0~3.0mm.

[0024] This invention provides a hybrid all-terrain tire with improved off-road performance. The tread blocks interlock with each other in the circumferential and axial directions, forming an interlocking structure. The evenly distributed tread grooves enhance handling on off-road surfaces. The stepped edge design of the tread blocks improves traction while maintaining tire stability. The tread block chamfers enhance tear resistance. Stone-expelling tread blocks accelerate stone removal. The staggered concave and convex shoulder profiles along the tire's circumferential direction improve the tire's ability to detach from loose surfaces. The sidewall pattern enhances lateral grip and improves driving safety. In summary, this tire, while maintaining stable grip and safety, improves self-cleaning capabilities by removing mud and stones and enhances detachment from loose surfaces, making it a hybrid all-terrain tire with superior off-road performance. Attached Figure Description

[0025] Figure 1 This is a planar development diagram of the tire tread pattern.

[0026] Figure 2 for Figure 1 One of the partial images.

[0027] Figure 3 for Figure 1 Partial view of the second part.

[0028] Figure 4 Cross-sectional views of the edges of the first, third, fifth, and seventh stepped patterns.

[0029] Figure 5 Detailed cross-sectional views of the second, fourth, sixth, and eighth stepped pattern edges.

[0030] Figure 6 This is a cross-sectional view of the edge of the ninth-step pattern.

[0031] Figure 7 This is a cross-sectional view of the cut corner of the first patterned block.

[0032] Figure 8 This is a cross-sectional view of the tire bottom protection block.

[0033] Figure 9 These are cross-sectional views of the convex and concave tire shoulder profiles.

[0034] Reference numerals: 110-First tread rib, 111-First transverse groove, 131-First secondary groove, 1-First shoulder tread block, 11-Convex shoulder profile, 2-Second shoulder tread block, 12-Concave shoulder profile, 120-Second tread rib, 121-Second transverse groove, 132-Second secondary groove, 133-Third secondary groove, 3-First center tread block, 4-Second center tread block, 130-Third tread rib, 5-Sidewall tread block, 6-First row of tread blocks, 7-Second row of tread blocks, 210-First main tread groove, 220-Second main tread groove, 21-First steel... 22-Second steel plate groove, 23-Third steel plate groove, 24-Fourth steel plate groove, 25-Fifth steel plate groove, 31-First trapezoidal pattern edge, 32-Second trapezoidal pattern edge, 33-Third trapezoidal pattern edge, 34-Fourth trapezoidal pattern edge, 351-Fifth trapezoidal pattern edge, 352-Fifth trapezoidal pattern edge, 36-Sixth trapezoidal pattern edge, 37-Seventh trapezoidal pattern edge, 38-Eighth trapezoidal pattern edge, 39-Ninth trapezoidal pattern edge, 41-First pattern block chamfer, 8-Tire bottom protection block. Detailed Implementation

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present invention.

[0036] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this application.

[0037] The tire specifications in this implementation case are 35*12.5R20LT. Figure 1 The diagram shows a schematic of the tire tread and sidewall unfolded into a planar state. Figure 1 The image also shows the left shoulder line a and the right shoulder line b. A circumferentially extending tire tread pattern is provided on the tread between the left shoulder line a and the right shoulder line b. It can be observed from the image that the tire tread pattern is centrally symmetrical and mainly consists of large-area block patterns. Different areas have different tread designs, which can provide different stress and performance to different parts of the tire.

[0038] like Figure 1-3As shown, the tire tread has three circumferentially extending alternating ribs and two main grooves, along the width of the tire tread ( Figure 1 (From left to right) The tire tread pattern includes: first tread rib 110, second tread rib 120, and third tread rib 130. The width of the second tread rib 120 is significantly greater than the widths of the first tread rib 110 and the third tread rib 130, and the patterns of the first tread rib 110 and the third tread rib 130 are centrally symmetrical. The three tread ribs are independent of each other, meaning that adjacent tread ribs do not directly contact each other.

[0039] The tire tread also features zigzag longitudinal grooves extending circumferentially to prevent direct contact between the tread ribs. A first main tread groove 210 extending circumferentially is formed between the first tread rib 110 and the second tread rib 120, and a second main tread groove 220 extending circumferentially is formed between the second tread rib 120 and the third tread rib 130. The groove depth D of these two longitudinal grooves is 11.5~13.5mm. In this embodiment, the groove depth D of these two longitudinal grooves is 12.5mm, so the depth of the three tread ribs from the bottom of the grooves is also 12.5mm, that is, the thickness of the three tread ribs is 12.5mm.

[0040] The tread patterns on both sides of the tire sidewall are also centrally symmetrical, with evenly arranged sidewall tread blocks 5. The sidewall tread blocks 5 are integrated with the tread blocks on adjacent tread ribs, and are 4-6 mm higher than the sidewall surface (5 mm in this embodiment). On slopes, soft surfaces, and rocky sections, the sidewall tread blocks 5 embed into surface cracks, forming temporary anchor points to improve lateral grip; simultaneously, they enhance the rigidity of the sidewall area, further strengthening the rigidity of the shoulder tread blocks and improving driving safety.

[0041] The first tread rib 110 extends from the tread crown to the shoulder and borders the sidewall tread block 5. The first tread rib 110 is circumferentially provided with a first transverse groove 111 and a first secondary groove 131, which are parallel to each other and both communicate with the first main tread groove 210. The depth of the first transverse groove 111 and the first secondary groove 131 is the same as that of the first main tread groove 210. The first tread rib 110 is divided into uniformly arranged first tread block units by the first transverse groove 111, with adjacent first tread block units remaining independent. The first tread block units are further divided by the first secondary groove 131 into first shoulder tread blocks 1 and second shoulder tread blocks 2 arranged side-by-side in the tire circumferential direction, with adjacent first shoulder tread blocks 1 and second shoulder tread blocks 2 remaining independent. In this embodiment, the first shoulder tread block 1 in the first tread block unit is located in front of the second shoulder tread block 2.

[0042] A second row of stone pattern blocks 7 is provided between adjacent first pattern block units, that is, the second row of stone pattern blocks 7 is located inside the first transverse groove 111. The depth of the second row of stone pattern blocks 7 is 2.0~3.0mm from the tire bottom. In this embodiment, the depth of the second row of stone pattern blocks 7 is 2.5mm from the tire bottom, that is, the thickness of the second row of stone pattern blocks 7 is 2.5mm. When a stone gets stuck in the groove, the rebound force generated by the compression deformation of the stone pattern blocks in the groove can accelerate the expulsion of the stone. At the same time, the local deformation absorbs energy when impacted, preventing stress from being transmitted to the tire carcass ply layer, reducing the risk of bulges by about 80%.

[0043] The first shoulder tread block 1, the second shoulder tread block 2, and the second row of tread blocks 7 are all arrow-shaped, with the arrows pointing in the same circumferential direction of the tire. In this embodiment, the arrows all point towards the rear of the tire circumference. The rear of the first shoulder tread block 1, the second shoulder tread block 2, and the second row of tread blocks 7 has a protruding part forming the tip of the arrow, and the front has a recessed part forming the tail tip of the arrow. Thus, the first shoulder tread block 1 and the second shoulder tread block 2, and the second shoulder tread block 2 and the second row of tread blocks 7 can form an interlocking structure in the circumferential direction of the tire through the cooperation of the protruding and recessed parts, improving the handling ability on off-road surfaces.

[0044] The first tire shoulder tread block 1 features a convex shoulder profile 11, specifically as follows: Figure 1-3 As shown in Figure 9, the convex shoulder profile 11 protrudes upwards towards the tire. The shoulder on the second shoulder tread block 2 adopts a concave shoulder profile 12, as shown in Figure 9. Figure 1-3 As shown in Figure 9, the concave shoulder profile 12 is recessed towards the inside of the tire. These two shoulder profiles are evenly staggered along the tire circumference as the first shoulder tread block 1 and the second shoulder tread block 2 are arranged. When the vehicle is driving on a soft road surface, the convex shoulder profile 11 generates centrifugal force to throw out mud, and the concave shoulder profile 12 forms a negative pressure zone to accelerate the radial flow of mud, thereby improving the tire's ability to get out of trouble on soft roads and enhancing off-road capability.

[0045] The second pattern rib 120 has a second transverse groove 121 arranged circumferentially, with its two ends connected to the first pattern main groove 210 and the second pattern main groove 220, respectively. The second pattern rib 120 is divided into uniformly arranged second pattern block units by the second transverse groove 121, with adjacent second pattern block units remaining independent of each other. The second transverse groove 121 is arranged obliquely, lower on the left and higher on the right, causing the second pattern block units to also be distributed at an angle. The second pattern block units are divided into two first central pattern blocks 3 and two second central pattern blocks 4 by intersecting second secondary grooves 132 and third secondary grooves 133. The first central pattern blocks 3 and the second central pattern blocks 4 are arranged alternately and remain independent of each other, making the overall pattern of the second pattern block unit centrally symmetrical. The two ends of the second secondary groove 132 are also connected to the first pattern main groove 210 and the second pattern main groove 220, respectively, and the second secondary groove 132 is approximately parallel to the second transverse groove 121. The third secondary ditch 133 intersects with the second transverse ditch 121. Both ends of the third secondary ditch 133 are connected to the adjacent second transverse ditch 121 on both sides. In this embodiment, the angle between the third secondary ditch 133 and the second transverse ditch 121 is approximately 114°. Furthermore, in this embodiment, the depths of the second transverse ditch 121, the second secondary ditch 132, and the third secondary ditch 133 are the same as those of the first patterned main ditch 210.

[0046] Both the first and second tread block units have protrusions and recesses on their outlines, which can cooperate to form an interlocking structure. Specifically, the first and second tread block units are both zigzag-shaped on the side facing the first main tread groove 210, and the protrusions of the two units correspond to the recesses of the other unit, thus cooperating to form an interlocking structure in the tire width direction, improving handling on off-road surfaces.

[0047] Overall, the first transverse groove 111 and the second transverse groove 121 are sequentially connected through the first main tread groove 210, so that the two first tread block units on the first tread rib 110 and the third tread rib 130, and the second tread block unit on the second tread rib 120 can form a complete tread block. A first row of stone tread blocks 6 is provided at the intersection of the first transverse groove 111, the second transverse groove 121, and the first main tread groove 210, i.e., the first row of stone tread blocks 6 is located inside the first main tread groove 210. The depth of the first row of stone tread blocks 6 is 2.0~3.0mm from the tire bottom. In this embodiment, the depth of the first row of stone tread blocks 6 is 2.5mm from the tire bottom, i.e., the thickness of the first row of stone tread blocks 6 is 2.5mm, the same as the second row of stone tread blocks 7. The first row of stone tread blocks 6 is a small triangular arrowhead shape, with the arrowhead pointing towards the second row of stone tread blocks 7.

[0048] The first shoulder tread block 1, the second shoulder tread block 2, the first center tread block 3, and the second center tread block 4 are all equipped with tire bottom protection blocks 8 at the bottom of the outer groove of the tire crown portion. Figure 1-3 As shown, where Figure 1 Although the tire bottom protection block 8 is shown, it is not painted black. Figure 2 , 3 The undercarriage protection block 8 is shown in black. A cross-section of the undercarriage protection block 8 is shown below. Figure 8 As shown, its depth from the tire bottom d3 is 1.0~2.0mm, and its width is 2.0~3.0mm; the chamfer radius at its connection with the tread block is R, and the chamfer at its connection with the tread groove is R'; the angle between its outer wall surface and the vertical direction is α. In this embodiment, the depth of the tire bottom protection block 8 from the tire bottom d3 is 1.5mm, its width is 2.5mm, R is 0.5mm, R' is 1.0mm, and α is 5°. The integrated design of the tread pattern and the groove bottom can enhance the strength of the tire groove bottom, prevent groove cracking, and ensure driving safety.

[0049] like Figure 1-3 As shown, the first shoulder tread block 1, the second shoulder tread block 2, the first center tread block 3, and the second center tread block 4 are all provided with stepped tread edges and three-dimensional steel plate grooves. The width of the steel plate grooves is 0.7~0.8mm, and the depth is 3~9mm. Details are as follows.

[0050] The first shoulder tread block 1 has its contour facing the first main tread groove 210 recessed inward to form a first concave portion. This first concave portion divides the contour into two segments: the first segment is near the first transverse groove 111 at the front, and the second segment is near the first secondary groove 131 at the rear. A first trapezoidal tread edge 31 is provided at the location of the first segment on the first shoulder tread block 1, and a second stepped tread edge 32 is provided within the first concave portion. The first shoulder tread block 1 also has a transverse first steel strip groove 21 inside, with its right end contacting the contour of the first concave portion and its left end extending into the convex shoulder contour 11.

[0051] The second shoulder tread block 2 has its contour facing the first main tread groove 210 recessed inward to form a second concave portion. This second concave portion divides the contour into two segments: the first segment is near the first secondary groove 131 at the front, and the second segment is near the first transverse groove 111 at the rear. A third trapezoidal tread edge 33 is provided at the location of the first segment on the second shoulder tread block 2, and a fourth trapezoidal tread edge 34 is provided within the second concave portion. A transverse second steel strip groove 22 is provided inside the second shoulder tread block 2. The right end of this first steel strip groove 21 contacts the contour of the second concave portion, and the left end extends into the concave shoulder contour 12.

[0052] The contour of the first central patterned block 3 facing the first main groove 210 is recessed inward to form a third concave portion. This third concave portion divides the contour into two segments: the first segment is near the first transverse groove 111 at the front, and the second segment is near the first secondary groove 131 at the rear. The first segment, located on the first central patterned block 3, has a fifth trapezoidal pattern edge 351; the second segment is bent, and the segment closer to the first secondary groove 131, located on the first central patterned block 3, has a fifth second trapezoidal pattern edge 352; the third concave portion has a sixth step pattern edge 36. The interior of the first central patterned block 3 has an oblique third steel plate groove 23 and a fourth steel plate groove 24. The third steel plate groove 23 is almost parallel to the edge 351 of the fifth stepped pattern, with one end in contact with the upper contour of the first central pattern block 3 and the other end located inside the first central pattern block 3; the fourth steel plate groove 24 is almost parallel to the second secondary groove 132, with one end in contact with the lower contour of the first central pattern block 3 and the other end located inside the first central pattern block 3.

[0053] A seventh trapezoidal pattern edge 37 is provided on the side of the second central pattern block 4 facing the first main pattern groove 210. A fourth concave portion is formed by the side of the second central pattern block 4 facing the second transverse groove 121, dividing this side profile into two segments: the first segment is near the left side of the first main pattern groove 210, and the second segment is near the right side of the third secondary groove 133. An eighth trapezoidal pattern edge 38 is provided within the fourth concave portion. A ninth trapezoidal pattern edge 39 is provided at one corner of the second central pattern block 4 facing the second transverse groove 121 and the third secondary groove 133. An oblique fifth steel strip groove 25 is provided inside the second central pattern block 4, which is nearly parallel to the upper and right contours of the second central pattern block 4, with one end contacting the lower contour of the second central pattern block 4 and the other end extending into the seventh trapezoidal pattern edge.

[0054] The cross-sections of the first trapezoidal pattern edge 31, the third trapezoidal pattern edge 33, the fifth trapezoidal pattern edge 351, the fifth trapezoidal pattern edge 352, and the seventh trapezoidal pattern edge 37 are as follows: Figure 4 As shown, the step height difference d1 is 15%~20% of the groove depth D of the main groove of the pattern. In this embodiment, d1 is 2mm and its chamfer R is 0.5mm. Figure 4 The stepped pattern edges shown can actively embed into the gaps on hard surfaces such as rocks and tree roots, creating a mechanical self-locking effect; at the same time, when the vehicle tilts on off-road sections, the lower pattern blocks provide stable support, while the higher pattern blocks continue to grip the ground, preventing single-point instability.

[0055] The cross-sections of the second-step patterned edge 32, the fourth-step patterned edge 34, the sixth-step patterned edge 36, and the eighth-step patterned edge 38 are as follows: Figure 5 As shown, the step height difference d2 is 30%~40% of the groove depth D of the main groove of the pattern. In this embodiment, d2 is 4mm, and its chamfer R' is 1.0mm. The cross-section of the edge 39 of the ninth trapezoidal pattern is shown below. Figure 6 As shown, the step height difference d1 is 15%~20% of the groove depth D of the main groove of the pattern. In this embodiment, d1 is 2mm and its chamfer R is 0.5mm. Figure 5 and Figure 6 The stepped tread edge shown provides a staggered block structure for the tread pattern. The higher tread blocks directly contact the ground to enhance grip, while the lower tread blocks serve as a supporting base to maintain the overall rigidity of the tire. This layered structure allows the tire to maintain strong traction while ensuring driving stability in complex terrain.

[0056] Furthermore, a first patterned block chamfer 41 is provided at one corner of the first central patterned block 3 facing the interior of the second patterned block unit. The cross-section of this chamfer is as follows: Figure 7 As shown, the chamfer is created by beveling, and the vertical height h of the chamfer is only a portion of the first central tread block 3. In this embodiment, h is 5mm. Chamfering the sharp parts of the tread blocks prevents chipping and breakage of the tread pattern under extreme impacts, improving driving stability. Furthermore, the chamfered tread block can improve the tire's tear resistance by 50%, extending its lifespan on complex off-road terrain.

[0057] The foregoing description of embodiments of the present invention, through which those skilled in the art are able to implement or use the present invention, will be readily apparent to those skilled in the art. Various modifications to these embodiments will be readily apparent to those skilled in the art. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novelty disclosed herein.

Claims

1. A hybrid all-terrain tire for improving off-road performance, characterized in that, The tire includes a tread and a sidewall. The tread has three circumferentially extending alternating tread ribs and two main tread grooves arranged laterally along the tire tread. The three tread ribs from left to right include the first tread rib (110), the second tread rib (120), and the third tread rib (130). The two main tread grooves from left to right include the first main tread groove (210) and the second main tread groove (220). The pattern of the first tread rib (110) and the pattern of the third tread rib (130) are centrally symmetrical. The sidewall has evenly arranged sidewall tread blocks (5), and the sidewall patterns on both sides of the tread are centrally symmetrical. The first tread rib (110) is divided into uniformly arranged first tread block units by the first transverse groove (111). The first tread block units are divided into first shoulder tread blocks (1) and second shoulder tread blocks (2) by the first secondary groove (131). The first transverse groove (111) and the first secondary groove (131) are parallel to each other and are connected to the first main tread groove (210). The first tread rib (110) extends from the tread crown to the shoulder. The shoulder on the first shoulder tread block (1) adopts a convex shoulder profile (11), and the shoulder on the second shoulder tread block (2) adopts a concave shoulder profile (12). The first shoulder tread block (1) and the second shoulder tread block (2) are provided with stepped tread edges on the side facing the first main tread groove (210), the first center tread block (3) is provided with the side facing the first main tread groove (210), the second center tread block (4) is provided with the side facing the first main tread groove (210) and the side facing the second transverse groove (121). The first shoulder tread block (1) has a side profile facing the first tread main groove (210) recessed into the first shoulder tread block (1) to form a first concave part. The first concave part divides the side profile into two segments. One segment is provided with a first trapezoidal tread edge (31) at the location of the first shoulder tread block (1), and a second step-type tread edge (32) is provided in the first concave part. The second shoulder tread block (2) has a side profile facing the first tread main groove (210) recessed into the second shoulder tread block (2) to form a second concave part. The second concave part divides the side profile into two segments. One segment is provided with a third trapezoidal tread edge (33) at the location of the second shoulder tread block (2). A fourth trapezoidal tread edge (34) is provided in the second concave part. The first central pattern block (3) has a side profile facing the first pattern main groove (210) recessed into the first central pattern block (3) to form a third concave part. The third concave part divides the side profile into two segments. One segment is provided with a fifth first trapezoidal pattern edge (351) at the location of the first central pattern block (3), and the other segment is provided with a fifth second trapezoidal pattern edge (352) at the location of the first central pattern block (3). A sixth step pattern edge (36) is provided in the third concave part. A seventh trapezoidal pattern edge (37) is provided on the side profile of the second central pattern block (4) facing the first main groove (210); a fourth concave part is formed by the side profile of the second central pattern block (4) facing the second transverse groove (121) and dividing the side profile into two segments; an eighth trapezoidal pattern edge (38) is provided in the fourth concave part; a ninth trapezoidal pattern edge (39) is provided on the part of the second central pattern block (4) facing the second transverse groove (121) and the corner of the third secondary groove (133). The step height difference of the first trapezoidal pattern edge (31), the third trapezoidal pattern edge (33), the fifth trapezoidal pattern edge (351), the fifth trapezoidal pattern edge (352), the seventh trapezoidal pattern edge (37), and the ninth trapezoidal pattern edge (39) is 15% to 20% of the depth of the main groove of the pattern; The step height difference of the second step pattern edge (32), the fourth step pattern edge (34), the sixth step pattern edge (36), and the eighth step pattern edge (38) is 30% to 40% of the depth of the main groove of the pattern.

2. The hybrid all-terrain tire for improving off-road performance according to claim 1, characterized in that, The second pattern rib (120) is divided into uniformly arranged second pattern block units by the second transverse groove (121). The second pattern block unit is divided into two first central pattern blocks (3) and two second central pattern blocks (4) by the intersecting second secondary groove (132) and third secondary groove (133). The pattern of the second pattern block unit is centrally symmetrical. The second transverse groove (121) and the second secondary groove (132) are connected to the first main groove (210) and the second main groove (220). The third secondary groove (133) is connected to the second transverse groove (121) on both sides.

3. A hybrid all-terrain tire for improving off-road performance according to claim 2, characterized in that, The first and second patterned block units are provided with protrusions and recesses on their outlines, which can cooperate with each other to form an interlocking structure; the first row of stone patterned blocks (6) is provided at the intersection of the first horizontal groove (111), the second horizontal groove (121), and the first main patterned groove (210); the second row of stone patterned blocks (7) is provided between adjacent first patterned block units.

4. A hybrid all-terrain tire for improving off-road performance according to claim 2, characterized in that, The first shoulder tread block (1), the second shoulder tread block (2), and the second row of stone tread blocks (7) are all arrow-shaped, with the arrows pointing in the same circumferential direction of the tire. The first shoulder tread block (1) and the second shoulder tread block (2), and the second shoulder tread block (2) and the second row of stone tread blocks (7) cooperate with each other to form an interlocking structure.

5. A hybrid all-terrain tire for improving off-road performance according to claim 3, characterized in that, The depth of the first row of stone pattern blocks (6) and the second row of stone pattern blocks (7) is 2.0~3.0mm from the tire bottom.

6. A hybrid all-terrain tire for improving off-road performance according to claim 1, characterized in that, The depth of the main groove of the pattern is 11.5~13.5mm.

7. A hybrid all-terrain tire for improving off-road performance according to claim 1, characterized in that, The first central patterned block (3) has a first patterned block chamfer (41) at one corner facing the inside of the second patterned block unit.

8. A hybrid all-terrain tire for improving off-road performance according to claim 1, characterized in that, The first shoulder tread block (1), the second shoulder tread block (2), the first center tread block (3), and the second center tread block (4) are provided with steel plate grooves inside; the width of the steel plate grooves is 0.7~0.8mm and the depth is 3~9mm.

9. A hybrid all-terrain tire for improving off-road performance according to claim 1, characterized in that, The first shoulder tread block (1), the second shoulder tread block (2), the first center tread block (3), and the second center tread block (4) are all provided with a bottom protection block (8) at the bottom of the outer groove of the crown portion.

10. A hybrid all-terrain tire for improving off-road performance according to claim 9, characterized in that, The depth of the tire bottom protection block (8) is 1.0~2.0mm from the tire bottom, and the width is 2.0~3.0mm.

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