Asymmetric anti-skid SUV (sports utility vehicle) snowfield tire

Abstract

The invention relates to the technical field of tire pattern design, and discloses an asymmetric anti-skid SUV (sports utility vehicle) snow tire which adopts asymmetric pattern design and is provided with a multi-dimensional anti-skid structure and an efficient water and snow discharging system. Due to the design of the multi-layer tire pattern blocks, the water and snow discharging performance, the traction capacity and the road holding force of the tire are effectively enhanced, and slippage of the tire on the wet land is reduced; and meanwhile, the accumulated snow self-cleaning of the tire can be realized, so that the accumulated snow accumulated in the transverse wide grooves of the tire crown and the transverse wide grooves of the tire crown can be automatically cleaned when the tire rotates.

Description

Technical Field

[0001] The present invention relates to the technical field of tire tread design, and more specifically, to an asymmetric anti-slip SUV snow tire. Background Art

[0002] In the winter snow environment, due to the complex road surface conditions covered by ice and snow, higher requirements are put forward for the performance of automobiles and tires. SUV models have high requirements for the grip, drainage and snow removal performance, and handling stability of tires. To meet this demand, technical fields such as the automotive engineering field, the material science field, and the mechanical manufacturing field have begun to devote themselves to developing SUV snow tires suitable for use in harsh ice and snow road conditions. Existing technical problems: The grip and traction ability of existing SUV snow tires on snow still need to be improved, especially on deep snow and icy roads. Secondly, existing snow tires are prone to slippage on wet ground after the ice and snow melt, affecting driving safety.

[0003] The tire tread can intuitively affect various aspects of the performance of SUV snow tires. For example, the depth and width of the tread will affect the degree of engagement between the tire and the ground and the friction between the tire and the ground; the drainage and snow removal design of the tread will affect the effective contact between the tire and the ground. Scientific tread design can effectively improve the grip and traction performance of the tire and reduce the slippage of the tire on wet ground after the ice and snow melt, thereby effectively improving the safety of the tire. Therefore, it is very necessary to develop a tire that can adapt to various working conditions of SUVs driving in the snow. Summary of the Invention

[0004] The present invention aims at the deficiencies of the existing technology and provides an asymmetric anti-slip SUV snow tire.

[0005] To achieve the above object, the present invention adopts the following technical solutions: An asymmetric anti-slip SUV snow tire includes a tread, on which there are circumferentially extending outer shoulder treads, outer crown treads, inner crown treads, and inner shoulder treads. The tire tread is asymmetrically designed, and there are circumferentially extending longitudinal grooves between the treads, which are the first longitudinal groove, the second longitudinal groove, and the third longitudinal groove from outside to inside in sequence; The outer shoulder tread includes a plurality of outer shoulder transverse grooves arranged circumferentially. The width of the outer shoulder transverse groove is 5-8 mm, and its inner end is connected to the first longitudinal groove; the outer shoulder transverse groove divides the outer shoulder tread into outer shoulder tread blocks. The part of the outer shoulder tread block located on the shoulder is provided with anti-slip teeth, and a first oblique groove and a second oblique groove are respectively provided above and below the anti-slip teeth; the part of the outer shoulder tread block located inside the shoulder is provided with an outer shoulder longitudinal groove, and the upper and lower ends of the outer shoulder longitudinal groove are connected to adjacent outer shoulder transverse grooves; the inner end of the outer shoulder tread block is provided with a triangular prism recess along the tire circumference; The outer crown pattern includes a plurality of outer crown transverse grooves arranged in the circumferential direction, the outer ends of the outer crown transverse grooves are connected to the first longitudinal grooves, and the inner ends are connected to the second longitudinal grooves; the outer crown transverse grooves divide the outer crown pattern into outer crown blocks, and the outer crown blocks are provided with outer crown auxiliary grooves extending obliquely in the longitudinal direction, and the upper and lower ends of the outer crown auxiliary grooves are respectively connected to the adjacent outer crown transverse grooves; the outer crown auxiliary grooves divide the outer crown blocks into the first outer crown blocks and the second outer crown blocks; the outer crown blocks are also provided with third oblique fine grooves; The inner crown pattern includes a plurality of inner crown transverse grooves arranged in the circumferential direction, the outer ends of the inner crown transverse grooves are connected to the second longitudinal grooves, the inner ends are connected to the third longitudinal grooves, and the inner groove bottoms are formed in a stepped form due to unequal depths; the inner crown transverse grooves divide the inner crown pattern into inner crown pattern blocks; The inner shoulder pattern includes a plurality of inner shoulder transverse grooves arranged along the circumferential direction, the inner shoulder transverse grooves are 5-8 mm wide, and the outer ends thereof are connected to the third longitudinal grooves; the inner shoulder transverse grooves divide the inner shoulder pattern into inner shoulder pattern blocks; the inner shoulder pattern blocks are provided with inner shoulder longitudinal grooves at the inner side of the shoulder, and the upper and lower ends of the inner shoulder longitudinal grooves are connected to the adjacent inner shoulder transverse grooves; the outer ends of the inner shoulder pattern blocks are provided with triangular prism recesses along the circumferential direction of the tire; The outer shoulder transverse groove, the outer crown transverse groove, the inner crown transverse groove, and the inner shoulder transverse groove are all grooves of unequal width; The tread blocks are provided with a plurality of steel sheets which are staggered with the grooves on the tread blocks and are arranged at intervals of depth and shallowness, and the steel sheets do not extend beyond the tire shoulders.

[0006] Preferably, the first longitudinal groove, the second longitudinal groove and the third longitudinal groove have a depth of 7-10 mm and a width of 10-14 mm.

[0007] Preferably, the anti-skid teeth include at least three teeth, and the teeth face the circumferential direction of the tire.

[0008] Preferably, the steel sheet is provided with a plurality of triangular protrusions, and the steel sheets in the same pattern are arranged in parallel.

[0009] Preferably, the steel sheets on the outer shoulder pattern blocks and the inner shoulder pattern blocks are arranged transversely; and the steel sheets on the outer crown pattern blocks and the inner crown pattern blocks are arranged obliquely.

[0010] Preferably, the outer crown transverse groove includes a first bend, which forms a raised portion on the upper side and a recessed portion on the lower side of the first outer crown pattern block, and the raised portion extends into the recessed portion to form an interlocking structure.

[0011] Preferably, the inner crown transverse groove includes a second bend, which causes a concave portion to be formed on the upper side of the inner crown transverse groove and a convex portion to be formed on the lower side. The convex portion extends into the concave portion to form an interlocking structure.

[0012] Preferably, the triangular prism concave portions on the outer shoulder tread blocks and the triangular prism concave portions on the inner shoulder tread blocks face in opposite directions.

[0013] Preferably, an arc-shaped groove is provided on one edge of the third oblique fine groove.

[0014] The SUV snow tire provided by the present invention adopts an asymmetric tread design and is equipped with a multi-dimensional anti-slip structure and an efficient drainage and snow removal system.

[0015] Asymmetric tread design: enables the tire to maintain a certain softness on the ice and snow road surface, thereby improving the grip and traction ability on ice and snow.

[0016] Multi-dimensional anti-slip structure: combines anti-slip teeth and steel sheets to enhance the friction and biting force between the tire and the ice and snow road surface from different angles, breaking the limitations of a single anti-slip structure, and enabling the tire to have excellent performance on different types of ice and snow road surfaces, such as compacted snow surfaces, frozen road surfaces, and soft snow.

[0017] Efficient drainage and snow removal system: through the grooves with different orientations and sizes in each tread area being interconnected to form an efficient drainage and snow removal system, whether it is a large area of accumulated water or heavy snow accumulation, it can be quickly discharged, maintaining the effective contact between the tire and the road surface. Compared with traditional snow tires, the drainage and snow removal efficiency is greatly improved, enhancing driving safety and stability.

[0018] The above multi-level tire tread block design effectively enhances the drainage and snow removal performance, traction ability and grip of the tire, and reduces the slip of the tire on wet ground; at the same time, it can achieve self-cleaning of the tire from snow, enabling the tire to automatically remove the snow accumulated in the crown transverse wide grooves and the crown transverse wide grooves when rotating. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an expanded view of the tread of an asymmetric anti-slip SUV snow tire.

[0020] Figure 2 It is a schematic diagram of the tread of the comparative example.

[0021] Reference Numerals: 1 - outer shoulder tread pattern, 101 - outer shoulder transverse groove, 11 - outer shoulder tread block, 111 - anti-slip teeth, 121 - first diagonal groove, 122 - second diagonal groove, 131 - outer shoulder longitudinal groove, 2 - outer crown tread pattern, 201 - outer crown transverse groove, 2011 - first bend, 202 - outer crown secondary groove, 21 - first outer crown tread block, 22 - second outer crown tread block, 221 - third diagonal fine groove, 3 - inner crown tread pattern, 301 - inner crown transverse groove, 3011 - second bend, 31 - inner crown tread block, 4 - inner shoulder tread pattern, 401 - inner shoulder transverse groove, 41 - inner shoulder tread block, 411 - inner shoulder longitudinal groove, 5 - first longitudinal groove, 6 - second longitudinal groove, 7 - third longitudinal groove, 8 - steel sheet, 81 - triangular protrusion, 9 - triangular prism recess. Detailed Embodiment

[0022] Combined with the embodiments of the present invention below, the technical solutions in the embodiments will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the protection scope of the present invention.

[0023] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0024] Figure 1 shows a structural schematic diagram in a state where the tread is unfolded into a flat surface, and Figure 1 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 figure that the tire tread pattern is asymmetric and mainly consists of large-area block tread patterns. Different designs of the tread patterns in different regions can bring different forces and performances to different parts of the tire.

[0025] As Figure 1 shown, from the outside to the inside along the width direction of the tread ( Figure 1When viewed from right to left, the tire tread pattern successively includes: an outer shoulder pattern 1, an outer crown pattern 2, an inner crown pattern 3, and an inner shoulder pattern 4. The widths of the outer shoulder pattern 1 and the inner shoulder pattern 4 are quite equivalent, while the width of the outer crown pattern 2 is significantly greater than that of the inner crown pattern 3. The above four patterns are mutually independent, that is, adjacent patterns do not directly contact each other.

[0026] There are also longitudinal grooves extending along the tire circumference on the tire tread, which can ensure that the above patterns do not directly contact each other. A first longitudinal groove 5 extending linearly in the circumferential direction is formed between the outer shoulder pattern 1 and the outer crown pattern 2, a second longitudinal groove 6 extending linearly in the circumferential direction is formed between the outer crown pattern 2 and the inner crown pattern 3, and a third longitudinal groove 7 extending linearly in the circumferential direction is formed between the inner crown pattern 3 and the inner shoulder pattern 4. The groove depths of these three longitudinal grooves are 7 - 10 mm, and the groove widths are 10 - 14 mm. While separating the patterns, they can improve the drainage and snow discharge performance of the tire.

[0027] The outer shoulder pattern 1 includes a plurality of outer shoulder transverse grooves 101 arranged in parallel along the tire circumference. The outer ends ( Figure 1 the right ends in the figure) of the outer shoulder transverse grooves 101 are located at the ends of the tread, and the inner ends ( Figure 1 the left ends in the figure) of the outer shoulder transverse grooves 101 communicate with the first longitudinal groove 5, so that the accumulated water or snow in the outer shoulder transverse grooves 101 can be discharged inwards or outwards. The outer shoulder transverse grooves 101 are grooves with unequal widths, and their groove widths are 5 - 8 mm, and the groove width at the inner end is smaller than that at the outer end. The outer shoulder transverse grooves 101 under this composite design can quickly discharge snow, prevent snow from accumulating on the outer side of the tire and affecting driving, and effectively prevent stone and snow jamming, improving the handling performance and braking performance of the tire on snow and wet ground, while bringing ideal traction and better acceleration performance.

[0028] The outer shoulder transverse grooves 101 divide the outer shoulder pattern 1 into several outer shoulder pattern blocks 11 arranged in the circumferential direction. The outer shoulder pattern blocks 11 as a whole present a parallelogram shape and are large block patterns, which can provide strong lateral support force when the SUV turns and reduce the risk of vehicle roll.

[0029] The part of the outer shoulder pattern block 11 located on the shoulder ( Figure 1 on the right side of the right shoulder line b in the figure) is provided with anti-slip teeth 110. The anti-slip teeth 111 include three tooth tips. The tooth tips face the tire circumferential direction, and the lengths of the tooth tips are unequal, and the lengths of the tooth tips increase along the direction from the outer side to the inner side of the tread. The anti-slip teeth 111 can increase the biting area between the tire and the snow, and improve the grip of the tire on soft snow or when climbing slopes. A first oblique groove 121 and a second oblique groove 122 are respectively arranged above and below the anti-slip teeth 111, which can penetrate into the snow during the tire rolling process to increase the adhesion between the tire and the road surface, thereby improving the driving stability of the vehicle.

[0030] The part of the outer shoulder tread block 11 located inside the shoulder ( Figure 1 on the left side of the middle right shoulder line b) is provided with an outer shoulder longitudinal groove 131 and steel sheets 8. The outer shoulder longitudinal groove 131 extends circumferentially and is a straight and narrow groove, with its upper and lower ends respectively communicating with adjacent outer shoulder transverse grooves 101. However, its depth is less than that of the outer shoulder transverse groove 101 and does not divide the outer shoulder tread block 11 into two independent left and right parts. The steel sheets 8 in the outer shoulder tread block 11 are arranged horizontally and parallel to the tire circumference, intersecting with the outer shoulder longitudinal groove 131. The depth of the steel sheets 8 is set with deep and shallow intervals. The steel sheets 8 are provided with a number of triangular protrusions 81, and adjacent triangular protrusions 81 face in opposite directions, making the steel sheets 8 more three-dimensional. When the tire is driving and braking, the steel sheets 8 can contact the ground in sequence to form a continuous biting effect, providing stable grip and anti-slip performance. The inner end of the outer shoulder tread block 101 is also provided with continuously connected triangular prism recesses 431 along the tire circumference, increasing the area of the tire in contact with the ice and snow ground, thereby increasing the grip on the ice and snow ground.

[0031] The outer crown tread 2 includes a number of outer crown transverse grooves 201 arranged parallel to the circumference. The outer end ( Figure 1 the middle right end) of the outer crown transverse groove 201 communicates with the first longitudinal groove 5, and the inner end ( Figure 1 the middle left end) communicates with the second longitudinal groove 6. The outer crown transverse groove 201 is a groove with unequal widths and depths, thus forming a stepped form inside, including a very narrow groove located on the left side of the middle of the tread. The outer crown transverse groove 201 also includes a first bend 2011 located on the right side of the middle of the tread. This bend is in the shape of a triangular arrow, with the arrow pointing upward towards the tread surface.

[0032] The outer crown transverse groove 201 divides the outer crown tread 2 into a number of circumferentially arranged outer crown tread blocks. The outer crown tread blocks are provided with outer crown secondary grooves 202 extending longitudinally and obliquely. The upper and lower ends of the outer crown secondary groove 202 communicate with adjacent outer crown transverse grooves 201 respectively, and the groove width is about 4.5 - 7.5 mm. The relatively wide groove width of the outer crown secondary groove 202 divides the outer crown tread blocks into the first outer crown tread block 21 and the second outer crown tread block 22 that are mutually but not completely independent. The outer crown tread blocks are also provided with a third oblique narrow groove 221. The inner end of the third oblique narrow groove 221 communicates with the second longitudinal groove 6, and the outer end passes through the outer crown transverse groove 201 and is located inside the first outer crown tread block 21. One side edge of the third oblique narrow groove 221 is provided with an arc-shaped groove 2211, increasing the area of the tire in contact with the ice and snow ground, thereby increasing the grip on the ice and snow ground. The outer crown tread blocks are covered with steel sheets 8 distributed obliquely and parallelly. The steel sheets 8 are higher on the left and lower on the right, and their shape and depth design are the same as those of the steel sheets 8 on the outer shoulder tread block 11.

[0033] The extremely narrow groove included in the outer crown transverse groove 201 is located between adjacent second outer crown blocks 22, and the depth of the extremely narrow groove is inconsistent with the outer crown transverse groove 201. The first bend 2011 is located between adjacent first outer crown blocks 21. The first bend 2011 forms a raised portion on the upper side of the first outer crown block 21 and a recessed portion on the lower side, and the raised portion extends into the recessed portion to form an interlocking structure. During the tire grounding process, the raised portion and the recessed portion abut against each other, so that the rigidity of the first outer crown block 21 is enhanced, thereby reducing the deformation of the tire, thereby improving the handling performance and avoiding the phenomenon of tire block falling.

[0034] The inner crown pattern 3 includes a plurality of inner crown transverse grooves 301 arranged in parallel along the circumferential direction. Figure 1 The middle right end) is connected to the second longitudinal groove 6, and the inner end ( Figure 1 The inner crown transverse groove 301 is a groove of unequal width and depth, so that a step form is formed inside, and also includes a second bend 3011 located on the left side of the middle of the pattern, which is in the shape of a triangular arrow, with the arrow pointing to the bottom of the tread.

[0035] The inner crown transverse groove 301 divides the inner crown pattern 3 into a plurality of inner crown blocks 31 arranged circumferentially. The inner crown blocks 31 are covered with obliquely parallel steel sheets 8, which are higher on the left and lower on the right. The shape and depth of the steel sheets 8 are designed to be the same as the steel sheets 8 on the outer shoulder blocks 11. The second bend 3011 forms a concave portion on the upper side of the inner crown transverse groove 301 and a convex portion on the lower side. The convex portion extends into the concave portion to form an interlocking structure. During the tire grounding process, the convex portion and the concave portion abut against each other, which increases the rigidity of the inner crown blocks 31, thereby reducing the deformation of the tire, thereby improving the handling performance and avoiding the phenomenon of tire block falling.

[0036] From the overall view of the tread, the grooves and steel sheets 8 on the inner crown pattern 3 and the grooves and steel sheets 8 on the outer crown pattern 2 are continuous patterns that can be connected, and are separated by the second longitudinal grooves 6. The areas of the inner crown pattern block 31, the first outer crown pattern block 21 and the second outer crown pattern block 22 are substantially the same.

[0037] The inner shoulder pattern 4 includes a plurality of inner shoulder transverse grooves 401 arranged in parallel along the circumferential direction. The inner shoulder transverse grooves 401 and the outer shoulder transverse grooves 101 are centrally symmetrical. Figure 1 The inner right end of the inner shoulder lateral groove 401 ( Figure 1The left end of the inner side (left end in the middle) is located at the end of the tread. The inner shoulder transverse groove 401 is also a groove with unequal widths. The groove width is 5 - 8 mm, and the groove width at the outer end is smaller than that at the inner end. The inner shoulder transverse groove 401 under this composite design can quickly remove snow, prevent snow from accumulating on the outer side of the tire and affecting driving, effectively prevent stones and snow from being trapped, improve the handling performance and braking performance of the tire on snow and wet ground, and at the same time bring ideal traction and better acceleration performance.

[0038] The inner shoulder transverse groove 401 divides several circumferentially arranged inner shoulder tread blocks 41 on the inner shoulder tread pattern 4. The inner shoulder tread blocks 41 are overall in the shape of a parallelogram and are large block patterns, which can provide strong lateral support force when the SUV turns and reduce the risk of vehicle roll.

[0039] The part of the inner shoulder tread block 41 located on the inner side of the tire shoulder ( Figure 1 on the right side of the middle right tire shoulder line a) is provided with an inner shoulder longitudinal groove 411 and steel sheets 8. The inner shoulder longitudinal groove 411 extends circumferentially, and its upper and lower ends are respectively communicated with the adjacent inner shoulder transverse grooves 401. The inner shoulder longitudinal groove 411 is a gradually changing straight groove, which gradually becomes wider from top to bottom, and the lower end is slightly inclined towards the inner side of the tire, with an inclination of about 5 - 10°. The inner shoulder longitudinal groove 411 can effectively break the water film and increase the contact area between the tire and the ground, thereby improving the grip. The distribution, shape, and depth design of the steel sheets 8 are the same as those of the steel sheets 8 on the outer shoulder tread blocks 11. The outer end of the inner shoulder tread block 401 is also provided with continuously connected triangular prism depressions 431 along the tire circumference, increasing the contact area of the tire with the ice and snow ground, thereby increasing the grip on the ice and snow ground.

[0040] According to the test methods of relevant national standards, all test results are calculated based on the comparative example as 100 benchmarks. The test value (relative value) = test value of the example / test value of the comparative example × 100. The specific measurement results are shown in Tables 1 and 2. For the trial - produced tire with the specification of 225 / 60R17, the specific comparisons of various performances are shown in Tables 1 and 2. The pattern results of the comparative example are as Figure 2 shown. Generally speaking, the example has more detailed designs, the tire pattern design is more abundant, with multi - dimensional anti - slip structures and an efficient drainage and snow - removal system.

[0041] There are obvious differences Table 1 Comparison of outdoor subjective performances between the comparative example and the example Subjective performance Comparative example Example 1 Dry ground steering 100 100 Wetland handling (subjective) 100 102 Snow steering accuracy 100 103 Snow predictability 100 102 Snow turning stability 100 103 Snow front and rear wheel balance 100 102 Snow straight / turn traction 100 104 Snow braking grip 100 105 Table 2 Comparison of outdoor objective performances between the comparative example and the example Objective performance Comparative example Example 1 Dry ground braking 100 100 Wetland acceleration 100 103 Wetland braking 100 102 Wetland handling (objective) 100 104 Wetland circle 100 102 Wetland straight hydroplaning 100 104 Snow braking 100 103 Snow traction 100 103 Snow circle 100 104 Ice traction 100 103 Ice braking 100 103 Combined with Tables 1 and 2, it can be seen from the comparative examples and the examples that the dry performance of the examples is not much different from that of the comparative examples, but the wet and ice-snow performance of the tires is better. The tires have good grip and traction performance, and reduce the slippage of the tires on the wet ground after the ice and snow melt, thereby effectively improving the safety of the tires.

[0042] The above is the description of the embodiments of the present invention. Through the above description of the disclosed embodiments, those skilled in the art can implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel points disclosed herein.

Claims

1. An asymmetric anti-slip SUV snow tire, characterized in that, It includes a tread, on which there are circumferentially extending outer shoulder tread patterns (1), outer crown tread patterns (2), inner crown tread patterns (3), and inner shoulder tread patterns (4). The tire tread pattern is asymmetrically designed, and there are circumferentially extending longitudinal grooves between the patterns, which are the first longitudinal groove (5), the second longitudinal groove (6), and the third longitudinal groove (7) from the outside to the inside in sequence. The outer shoulder tread pattern (1) includes a number of outer shoulder transverse grooves (101) arranged circumferentially. The groove width of the outer shoulder transverse groove (101) is 5 - 8 mm, and its inner end is connected to the first longitudinal groove (5). The outer shoulder transverse groove (101) divides the outer shoulder tread pattern (1) into outer shoulder tread blocks (11). The part of the outer shoulder tread block (11) located on the shoulder is provided with anti-slip teeth (111), and the first diagonal groove (121) and the second diagonal groove (122) are respectively arranged above and below the anti-slip teeth (111). The part of the outer shoulder tread block (11) located on the inner side of the shoulder is provided with an outer shoulder longitudinal groove (131), and the upper and lower ends of the outer shoulder longitudinal groove (131) are connected to the adjacent outer shoulder transverse grooves (101). The inner end of the outer shoulder tread block (101) is provided with a triangular prism recess (9) along the tire circumference. The outer crown tread pattern (2) includes a number of outer crown transverse grooves (201) arranged circumferentially. The outer end of the outer crown transverse groove (201) is connected to the first longitudinal groove (5), and the inner end is connected to the second longitudinal groove (6). The outer crown transverse groove (201) divides the outer crown tread pattern (2) into outer crown tread blocks. There are outer crown secondary grooves (202) extending longitudinally and obliquely on the outer crown tread blocks. The upper and lower ends of the outer crown secondary groove (202) are respectively connected to the adjacent outer crown transverse grooves (201). The outer crown secondary groove (202) divides the outer crown tread block into a first outer crown tread block (21) and a second outer crown tread block (22). There is also a third diagonal fine groove (221) on the outer crown tread block. The inner crown tread pattern (3) includes a number of inner crown transverse grooves (301) arranged circumferentially. The outer end of the inner crown transverse groove (301) is connected to the second longitudinal groove (6), and the inner end is connected to the third longitudinal groove (7), and the inner bottom of the groove forms a stepped form due to unequal depths. The inner crown transverse groove (301) divides the inner crown tread pattern (3) into inner crown tread blocks (31). The inner shoulder tread pattern (4) includes a number of inner shoulder transverse grooves (401) arranged circumferentially. The groove width of the inner shoulder transverse groove (401) is 5 - 8 mm, and its outer end is connected to the third longitudinal groove (7). The inner shoulder transverse groove (401) divides the inner shoulder tread pattern (4) into inner shoulder tread blocks (41). The part of the inner shoulder tread block (41) located on the inner side of the shoulder is provided with an inner shoulder longitudinal groove (411), and the upper and lower ends of the inner shoulder longitudinal groove (411) are connected to the adjacent inner shoulder transverse grooves (401). The outer end of the inner shoulder tread block (401) is provided with a triangular prism recess (9) along the tire circumference. The outer shoulder transverse groove (101), the outer crown transverse groove (201), the inner crown transverse groove (301), and the inner shoulder transverse groove (401) are all grooves with unequal widths; A number of steel sheets (8) are arranged on the tread blocks, alternating with the grooves on the tread blocks and arranged at different depths, and the steel sheets (8) do not extend to the tire shoulder.

2. The asymmetric anti-slip SUV snow tire according to claim 1, wherein The first longitudinal groove (5), the second longitudinal groove (6), and the third longitudinal groove (7) have a groove depth of 7 - 10 mm and a groove width of 10 - 14 mm.

3. An asymmetric anti-slip SUV snow tire according to claim 1, characterized in that, The anti-slip teeth (111) include at least three tooth tips, and the tooth tips face the circumferential direction of the tire.

4. An asymmetric anti-slip SUV snow tire according to claim 1, characterized in that, The steel sheets (8) are provided with a number of triangular protrusions (81), and the steel sheets (8) in the same pattern are arranged in parallel.

5. An asymmetric anti-slip SUV snow tire according to claim 1, characterized in that, The steel sheets (8) on the outer shoulder tread blocks (101) and the inner shoulder tread blocks (401) are arranged horizontally; the steel sheets (8) on the outer crown tread blocks and the inner crown tread blocks (31) are arranged obliquely.

6. The asymmetric anti-slip SUV snow tire according to claim 1, characterized in that, The outer crown transverse groove (201) includes a first bend (2011), and the first bend (2011) causes a protrusion to be formed on the upper side of the first outer crown tread block (21) and a depression to be formed on the lower side. The protrusion extends into the depression to form an interlocking structure.

7. An asymmetric anti-slip SUV snow tire according to claim 1, characterized in that, The inner crown transverse groove (301) includes a second bend (3011), and the second bend (3011) causes a depression to be formed on the upper side of the inner crown transverse groove (301) and a protrusion to be formed on the lower side. The protrusion extends into the depression to form an interlocking structure.

8. An asymmetric anti-slip SUV snow tire according to claim 1, characterized in that, The triangular prism depressions (9) on the outer shoulder tread blocks (101) and the triangular prism depressions (9) on the inner shoulder tread blocks (401) face in opposite directions.

9. An asymmetric anti-slip SUV snow tire according to claim 1, characterized in that, An arc-shaped groove (2211) is provided on one side edge of the third oblique fine groove (221).

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