Winter and summer dual-purpose nail-free snow tire pattern suitable for ice and snow pavements

Abstract

Aiming at long-time snowfields, especially radial tires, the utility model provides a winter and summer dual-purpose nail-free snow tire pattern suitable for ice and snow pavements, which comprises a tread pattern, the tread pattern comprises pattern blocks arranged along the circumferential direction of the tire and pattern grooves arranged along the circumferential direction of the tire, a pattern groove I is arranged at the center of the width direction of the tire, and a pattern groove II is arranged at the center of the width direction of the tire. A pattern block I, a pattern groove II, a pattern block II, a pattern groove III, a pattern block III, a pattern groove IV, a pattern block IV, a pattern groove V and a pattern block V are sequentially arranged from the pattern groove I to the left and the pattern groove II to the right, and the width of the pattern groove I, the width of the pattern groove III and the width of the pattern groove V are smaller than the width of the pattern groove II and the width of the pattern groove IV. The requirements for ice and snow braking performance and handling stability in winter are met preferentially, the requirement for wear resistance in summer is met, and the tedious tire changing link is avoided.

Description

Technical Field

[0001] The utility model relates to a snow tire tread, in particular to a winter and summer dual-purpose studless snow tire tread suitable for ice and snow roads. Background Art

[0002] Japan has a long and narrow terrain, and the main ice and snow environment lasts for five months. The current snow tire products can meet the winter braking requirements, but cannot meet the summer wear resistance needs. The tire changing process is cumbersome and consumes a lot of manpower and material resources. Generally speaking, tires used in snow require the ice and snow grip and handling stability performance of studless tires, while tires used in summer require to meet the wetland, handling stability and wear resistance of summer tires, etc. Different tire performances are required according to different life cycles, so a cumbersome tire changing process has to be faced. Content of the Utility Model

[0003] To solve the above problems, for regions with a long snow time, especially for radial tires, the utility model provides a winter and summer dual-purpose studless snow tire tread suitable for ice and snow roads, which is mainly used for truck and bus fleets, preferentially meets the requirements of winter ice and snow braking and handling stability, takes into account the summer wear resistance requirements, and avoids the cumbersome tire changing process.

[0004] The technical solution of the utility model is as follows: a winter and summer dual-purpose studless snow tire tread suitable for ice and snow roads, including a tread pattern. The tread pattern includes pattern blocks arranged along the circumferential direction of the tire and pattern grooves arranged along the circumferential direction of the tire. The center of the tire in the width direction is Pattern Groove Ⅰ. From Pattern Groove Ⅰ to the left and right respectively, there are Pattern Block Ⅰ, Pattern Groove Ⅱ, Pattern Block Ⅱ, Pattern Groove Ⅲ, Pattern Block Ⅲ, Pattern Groove Ⅳ, Pattern Block Ⅳ, Pattern Groove Ⅴ, Pattern Block Ⅴ in sequence. The widths of Pattern Groove Ⅰ, Pattern Groove Ⅲ, and Pattern Groove Ⅴ are smaller than the widths of Pattern Groove Ⅱ and Pattern Groove Ⅳ; for Pattern Block Ⅰ, Pattern Block Ⅱ, Pattern Block Ⅲ, and Pattern Block Ⅳ, adjacent pattern blocks in the same circumferential direction are connected by reinforcing ribs;

[0005] Horizontal Knife Groove Ⅲ, Horizontal Knife Groove Ⅰ, Horizontal Knife Groove Ⅱ, Horizontal Knife Groove Ⅱ, Horizontal Knife Groove Ⅰ, and Horizontal Knife Groove Ⅲ are respectively arranged on Pattern Block Ⅰ, Pattern Block Ⅱ, Pattern Block Ⅲ, and Pattern Block Ⅳ from top to bottom in sequence; Horizontal Knife Groove Ⅰ and Horizontal Knife Groove Ⅱ are respectively communicated with the pattern grooves on the left and right sides of the pattern blocks where they are located, so as to divide the pattern blocks where they are located into five parts from top to bottom; there is a horizontal transverse knife groove between circumferentially adjacent Pattern Block Ⅴ; for two adjacent Pattern Block Ⅴ, one is provided with a horizontal transverse groove and the other is provided with a variable-angle transverse groove, and the tire shoulder is an open tire shoulder; a vertical knife groove is arranged in the middle of each Pattern Block Ⅴ, which is respectively communicated with the horizontal transverse groove and the variable-angle transverse groove, and there are vertical knife grooves above and below the horizontal transverse groove and the variable-angle transverse groove respectively;

[0006] The tread groove is provided with wear indicators, and the depth is designed to be half of the depth of the corresponding tread groove or other depths less than the depth of the tread groove;

[0007] The depth of the transverse groove I, the depth of the horizontal transverse groove, the depth of the vertical groove, and the depth of the horizontal transverse groove are less than or equal to the depth of the wear indicator; the depth of the transverse groove II, the depth of the variable-angle transverse groove, and the depth of the reinforcing rib are greater than the depth of the wear indicator.

[0008] The wear indicators are evenly distributed at six equal parts along the circumference of the corresponding tread groove.

[0009] The variable-angle transverse groove is a symmetric structure, and from the tread groove V towards the tire sidewall, the upper edge of one side groove wall is successively a horizontal straight line I, a broken line I, a horizontal straight line II, a broken line II, a horizontal straight line III, a broken line III, a horizontal straight line I, a broken line I, a horizontal straight line II, and a broken line II, which are located on the tread block V. From the tread groove V towards the tire sidewall, the width of the variable-angle transverse groove shows an increasing trend, and the broken line III makes the width of the variable-angle transverse groove gradually decrease;

[0010] The vertical groove is located in the middle of the tread block V; the vertical groove is connected to the position where the horizontal straight line II of the variable-angle transverse groove is located;

[0011] For the parts corresponding to the horizontal straight line III and the broken line III of the variable-angle transverse groove, the horizontal transverse groove connects a pair of symmetric grooves, and the width of the symmetric grooves gradually decreases.

[0012] On both sides of the tread block I, the tread block II, the tread block III, and the tread block IV, one side is a tread groove with a wider width, and the other side is a tread groove with a narrower width; the transverse grooves I, II, and III on each tread block are inclined in the same direction;

[0013] For the tread block I, the tread block II, and the tread block III, when the transverse groove I is inclined downward from the tread groove with a wider width to the tread groove with a narrower width, the part of the tread block where the upper transverse groove IV is located extends into the tread groove with a narrower width, forming a protrusion towards the tread groove with a narrower width; when the transverse groove I is inclined upward from the tread groove with a wider width to the tread groove with a narrower width, the part of the tread block where the lower transverse groove IV is located extends into the tread groove with a narrower width, forming a protrusion towards the tread groove with a narrower width;

[0014] The parts of the tread block formed by the transverse grooves I and II on the tread block III and the tread block IV extend towards the tread groove with a wider width, forming a protrusion towards the tread groove with a wider width; moreover, the angle of the tread block formed between the transverse groove I and the tread groove with a wider width is a chamfer.

[0015] The sides of the tread block I and the tread block II close to the tread groove with a wider width are curves, and the sides close to the tread groove with a narrower width are broken lines;

[0016] The side of the tread block Ⅲ adjacent to the wider tread groove is a broken line, and the side adjacent to the narrower tread groove is also a broken line;

[0017] The side of the tread block Ⅳ adjacent to the wider tread groove is a broken line, and the side adjacent to the narrower tread groove is a straight line.

[0018] For the tread block Ⅰ of the left-side tread pattern, from the wider tread groove to the narrower tread groove, the transverse groove Ⅰ is inclined downward, and the part of the tread block where the upper transverse groove Ⅳ is located extends into the narrower tread groove, forming a protrusion towards the narrower tread groove;

[0019] For the tread block Ⅱ of the left-side tread pattern, from the wider tread groove to the narrower tread groove, the transverse groove Ⅰ is inclined downward, and the part of the tread block where the upper transverse groove Ⅳ is located extends into the narrower tread groove, forming a protrusion towards the narrower tread groove;

[0020] For the tread block Ⅲ of the left-side tread pattern, from the wider tread groove to the narrower tread groove, the transverse groove Ⅰ is inclined upward, and the part of the tread block where the lower transverse groove Ⅳ is located extends into the narrower tread groove, forming a protrusion towards the narrower tread groove;

[0021] For the tread block Ⅳ of the left-side tread pattern, from the wider tread groove to the narrower tread groove, the transverse groove Ⅰ is inclined upward, and the part of the tread block where the lower transverse groove Ⅳ is located extends into the narrower tread groove, forming a protrusion towards the narrower tread groove.

[0022] In the sectional view, the edges in the width direction of the tread blocks Ⅰ, Ⅱ, Ⅲ, and Ⅳ are inclined in the same direction as the transverse groove Ⅰ.

[0023] In the sectional view, the edges in the width direction of the tread blocks Ⅰ, Ⅱ, Ⅲ, and Ⅳ have the same inclination angle as the transverse groove Ⅰ, and the transverse grooves Ⅰ, Ⅱ, and Ⅲ have the same inclination angle.

[0024] The tread pattern is centrosymmetric; the tread pattern saturation is 67 - 73%.

[0025] The beneficial effects of the present utility model: The present utility model provides a winter-summer dual-purpose studless snow tire tread pattern suitable for ice and snow roads, mainly used for truck and bus fleets, giving priority to meeting the requirements of winter ice and snow braking performance and handling stability, taking into account the summer wear resistance requirements, and avoiding the cumbersome tire-changing process. Description of the Drawings

[0026] Figure 1 is the structural schematic diagram of the present utility model.

[0027] Figure 2 It is a structural schematic diagram of tread block Ⅰ, tread block Ⅱ, tread block Ⅲ, tread block Ⅳ, and tread block Ⅴ.

[0028] Figure 3 It is a cross-sectional schematic diagram of the steel sheet forming the transverse groove Ⅱ.

[0029] Figure 4 It is a cross-sectional schematic diagram of the steel sheet forming the transverse groove Ⅰ.

[0030] Figure 5 It is a cross-sectional schematic diagram of the steel sheet forming the transverse groove Ⅲ.

[0031] Figure 6 It is a cross-sectional schematic diagram of the steel sheet forming the horizontal transverse groove and the vertical groove.

[0032] Figure 7 It is a cross-sectional schematic diagram of the tread groove Ⅱ and the tread groove Ⅳ.

[0033] Figure 8 It is a cross-sectional schematic diagram of the tread groove Ⅰ, the tread groove Ⅲ, and the tread groove Ⅴ.

[0034] Figure 9 It is a schematic diagram of the tread pattern surface of the present utility model when it is just used in summer after being worn. Detailed implementation manners

[0035] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present utility model, and should not be construed as limiting the protection scope of the present utility model. Those skilled in the art can make some non-essential improvements and adjustments according to the content of the present utility model below. In the present utility model, unless otherwise clearly specified and limited, the technical terms used in this application should have the ordinary meaning understood by those skilled in the art of the present utility model.

[0036] As Figures 1-9 shown, a winter and summer dual-purpose studless snow tire tread applicable to ice and snow roads includes a tread pattern. The tread pattern includes tread blocks arranged along the circumferential direction of the tire and tread grooves arranged along the circumferential direction of the tire. The center of the tire in the width direction is the tread groove Ⅰ1. From the tread groove Ⅰ, the tread blocks Ⅰ6, the tread groove Ⅱ2, the tread blocks Ⅱ7, the tread groove Ⅲ3, the tread blocks Ⅲ8, the tread groove Ⅳ4, the tread blocks Ⅳ9, the tread groove Ⅴ5, and the tread blocks Ⅴ10 are arranged in sequence to the left and right. The widths of the tread grooves Ⅰ1, Ⅲ3, and Ⅴ5 are smaller than the widths of the tread grooves Ⅱ2 and Ⅳ4. For the tread blocks Ⅰ6, Ⅱ7, Ⅲ8, and Ⅳ9, the adjacent tread blocks in the same circumferential direction are connected by the reinforcing ribs 11. While ensuring the pattern saturation, they are connected by the reinforcing ribs 9, which improves the overall rigidity of the tread blocks and ensures the product mileage.

[0037] On the tread blocks Ⅰ6, tread blocks Ⅱ7, tread blocks Ⅲ8, and tread blocks Ⅳ9, transverse grooves Ⅲ14, transverse grooves Ⅰ12, transverse grooves Ⅱ13, transverse grooves Ⅱ13, transverse grooves Ⅰ12, and transverse grooves Ⅲ14 are sequentially arranged from top to bottom. The transverse grooves Ⅰ12 and transverse grooves Ⅱ13 communicate with the tread grooves on the left and right sides of the corresponding tread blocks respectively, thereby dividing the corresponding tread blocks into five tread block parts from top to bottom. The presence of the transverse grooves Ⅲ14, transverse grooves Ⅰ12, and transverse grooves Ⅱ13 facilitates snow and ice removal, rain drainage, and increases the grip performance.

[0038] Horizontal transverse grooves 15 are provided between the circumferentially adjacent tread blocks Ⅴ10; for two adjacent tread blocks Ⅴ10, one is provided with a horizontal transverse groove 16, and the other is provided with a variable-angle transverse groove 17, and the tire shoulder is an open tire shoulder. This facilitates snow and ice removal, rain drainage, and increases the grip performance.

[0039] Each of the tread blocks Ⅴ is provided with a vertical groove 18, which communicates with the horizontal transverse groove and the variable-angle transverse groove 7 respectively, and there are vertical grooves 18 above and below the horizontal transverse groove and the variable-angle transverse groove 7 respectively.

[0040] Wear indicators 19 are arranged in the tread grooves, especially in the tread grooves Ⅴ, and the depth is designed to be half of the depth of the corresponding tread groove or other depths less than the depth of the tread groove, and they are evenly distributed in six equal parts around the circumference. The depth of the wear indicator 10 can be designed according to the wear conditions in winter and summer.

[0041] The depth of the transverse groove Ⅰ12, the depth of the horizontal transverse groove 15, the depth of the vertical groove 18, and the depth of the horizontal transverse groove 16 are less than or equal to the depth of the wear indicator 19; the depth of the transverse groove Ⅱ13, the depth of the variable-angle transverse groove 7, and the depth of the reinforcing rib 11 are greater than the depth of the wear indicator 19; thus, in winter, the transverse groove Ⅰ12, the horizontal transverse groove, the vertical groove 18, the horizontal transverse groove 16, the transverse groove Ⅱ13, the variable-angle transverse groove 7, and the reinforcing rib 11 all exist, and in summer, only the transverse groove Ⅱ13, the variable-angle transverse groove 7, and the reinforcing rib 11 exist, which increases the rigidity between the circumferential tread blocks, meets the requirements of winter ice and snow braking performance and handling stability, takes into account the summer wear resistance requirements, and avoids the cumbersome tire-changing process.

[0042] The winter-summer dual-purpose studless snow tire tread provided by this application can design the depths of each groove and ditch according to the lengths of winter ice and snow weather and summer rain and snow weather, so as to give priority to meeting the requirements of winter ice and snow braking performance and handling stability, while taking into account the summer wear resistance requirements and avoiding the cumbersome tire-changing process. In addition, considering the change from winter ice and snow weather to summer rain and snow weather, the depths of each groove and ditch can be further designed, enabling the tire to be better used in the transitional seasons.

[0043] The depth of the transverse groove Ⅲ 14 is less than the depth of the wear indicator 19.

[0044] The horizontal transverse groove 16 and the variable-angle transverse groove 17 on the tread block Ⅴ 10 are respectively connected to the tread groove Ⅴ 5. On the tread block Ⅴ, they extend from the tread groove Ⅴ 5 towards the tire sidewall, and the width of the variable-angle transverse groove shows an increasing trend. The width at the narrowest part is 6 - 8 mm, and the width at the widest part is 10 - 14 mm.

[0045] The shoulder is an open shoulder. In cross-section, the variable-angle transverse groove 17 is a symmetric structure. From the tread groove Ⅴ towards the tire sidewall, on one side of the groove wall, the upper edges are successively the horizontal straight line Ⅰ 170, the broken line Ⅰ 171, the horizontal straight line Ⅱ 172, the broken line Ⅱ 173, the horizontal straight line Ⅲ 174, the broken line Ⅲ 175, the horizontal straight line Ⅰ 170, the broken line Ⅰ 171, the horizontal straight line Ⅱ 172, and the broken line Ⅱ 173 are located on the tread block Ⅴ 10. From the tread groove Ⅴ towards the tire sidewall, the width of the variable-angle transverse groove shows an increasing trend, and the broken line Ⅲ makes the width of the variable-angle transverse groove gradually decrease.

[0046] The vertical groove 18 is located in the middle of the tread block Ⅴ; the vertical groove 18 is connected to the position where the horizontal straight line Ⅱ 172 of the variable-angle transverse groove 17 is located.

[0047] Corresponding to the horizontal straight line Ⅲ and the broken line Ⅲ of the variable-angle transverse groove, the horizontal transverse groove 16 connects a symmetric groove, and the width of the symmetric groove 20 gradually decreases.

[0048] The design of the horizontal transverse groove and the variable-angle transverse groove can greatly discharge ice and snow, improving the handling stability of the tire. The design of the variable-angle transverse groove also facilitates drainage.

[0049] The shoulder is an open shoulder and is designed with heat dissipation grooves 21, strengthening the snow shoveling and snow discharging capabilities of the tire when driving on an ice and snow road surface, ensuring the ice and snow grip of the tire, and thus ensuring the handling stability of the tire.

[0050] On both sides of the tread block Ⅰ 6, the tread block Ⅱ 7, the tread block Ⅲ 8, and the tread block Ⅳ 9, one side has a wider tread groove, and the other side has a narrower tread groove; the transverse grooves Ⅰ, Ⅱ, and Ⅲ on each tread block are inclined in the same direction; for the tread block Ⅰ, the tread block Ⅱ, and the tread block Ⅲ, when the transverse groove Ⅰ is inclined downward from the wider tread groove to the narrower tread groove, the part of the tread block where the upper transverse groove Ⅲ 14 is located extends into the narrower tread groove, forming a protrusion towards the narrower tread groove; when the transverse groove Ⅰ is inclined upward from the wider tread groove to the narrower tread groove, the part of the tread block where the lower transverse groove Ⅲ 14 is located extends into the narrower tread groove, forming a protrusion towards the narrower tread groove.

[0051] Since the tread blocks I, II, and III are located in the middle of the tread pattern and have many steel sheet grooves, the tread blocks I, II, and III have weak rigidity. The part of the tread block where the transverse groove III 14 is located bulges outward towards the narrower tread groove, increasing the area of the tread block. This can improve the rigidity of the tread block while ensuring snow performance.

[0052] The transverse groove I is located at 1 / 5 - 1 / 4 of the tread block, the transverse groove II is located at 1 / 2 - 1 / 3 of the tread block, and the transverse groove III is located at 1 / 8 - 1 / 7 of the tread block.

[0053] The cross-sectional views of the tread blocks I 6, II 7, III 8, and IV 9 are similar to quadrilaterals; and in the cross-sectional view, the sides in the width direction of the tread blocks I 6, II 7, III 8, and IV 9 are inclined in the same direction as the transverse groove I. The inclination angle, i.e., the angle with the horizontal direction, is 8° - 10°. The purpose of the inclined setting is to improve winter ice and snow braking performance and handling stability requirements under the condition of consistent stiffness.

[0054] And in the cross-sectional view, the sides in the width direction of the tread blocks I 6, II 7, III 8, and IV 9 can have the same inclination angle as the transverse groove I, and the transverse grooves I 12, II 13, and III 14 can also have the same inclination angle. The same direction is beneficial to noise and handling stability.

[0055] The sides of the tread blocks I 6 and II 7 close to the wider tread groove are curves, and the sides close to the narrower tread groove are broken lines. Considering the overall tread pattern, it is beneficial to handling stability and mileage.

[0056] The sides of the tread block III 8 close to the wider tread groove are broken lines, and the sides close to the narrower tread groove are also broken lines. The sides of the tread block IV 9 close to the wider tread groove are broken lines, and the sides close to the narrower tread groove are straight lines. Considering the overall tread pattern, it is beneficial to handling stability and mileage.

[0057] The transverse grooves I 12 and II 13 on the tread blocks III 8 and IV 9 divide the tread blocks, and the tread blocks form five tread block parts from top to bottom. Among them, the three middle tread block parts extend towards the wider tread groove, forming a bulge towards the wider tread groove. And in the cross-sectional view, the angle formed by the transverse groove I 12 and the tread block, on the side of the wider tread groove, and the angle close to the transverse groove II 13 is a chamfer.

[0058] For the tread block Ⅰ6 of the left-side pattern, from the wider pattern groove to the narrower pattern groove, the transverse groove Ⅰ is arranged obliquely downward from top to bottom. The part of the tread block where the upper transverse groove Ⅲ14 is located extends into the narrower pattern groove, forming a protrusion towards the narrower pattern groove. This design can improve the overall rigidity of the tread block while ensuring heat dissipation of the tread block.

[0059] For the tread block Ⅱ7 of the left-side pattern, from the wider pattern groove to the narrower pattern groove, the transverse groove Ⅰ is arranged obliquely downward from top to bottom. The part of the tread block where the upper transverse groove Ⅲ14 is located extends into the narrower pattern groove, forming a protrusion towards the narrower pattern groove. This design can improve the overall rigidity of the tread block while ensuring heat dissipation of the tread block.

[0060] For the tread block Ⅲ8 of the left-side pattern, from the wider pattern groove to the narrower pattern groove, the transverse groove Ⅰ is arranged obliquely upward from bottom to top. The part of the tread block where the lower transverse groove Ⅲ14 is located extends into the narrower pattern groove, forming a protrusion towards the narrower pattern groove. This design can improve the overall rigidity of the tread block while ensuring heat dissipation of the tread block.

[0061] The tread blocks on the left and right sides of the pattern groove are arranged in a staggered manner. The stagger of the tread blocks on the left and right sides of the pattern groove is about 1 / 4 - 1 / 2 of the length of the tread block, which is beneficial to the ice grip performance.

[0062] The tread pattern is centrally symmetric. The right-side pattern is formed by rotating the left-side pattern of the tire 180° around the center.

[0063] The widths of the tread blocks Ⅱ7, Ⅲ8, and Ⅳ9 are 0.9 - 1.1 times that of the tread block Ⅰ6, and the width of the tread block Ⅴ10 is 1.4 - 1.5 times that of the tread blocks Ⅱ7, Ⅲ8, and Ⅳ9.

[0064] The widths of the pattern grooves Ⅲ3 and Ⅴ5 are 0.9 - 1.1 times that of the pattern groove Ⅰ1. The width ranges of the pattern grooves Ⅰ1, Ⅲ3, and Ⅴ5 are 0.75 - 2 mm; the widths of the pattern grooves Ⅱ2 and Ⅳ4 are 6 - 8 mm.

[0065] As Figure 7 , the schematic cross-sectional views of the pattern grooves Ⅱ and Ⅳ. From the tire surface downwards, the widths of the pattern grooves Ⅱ and Ⅳ first gradually decrease and then remain unchanged. The bottom of the pattern groove is arc-shaped. The height L2 of the gradually decreasing part of the width is 10 - 11 mm, the height L1 - L2 of the part with unchanged width is 8.5 - 10 mm, the maximum width is 6 - 8 mm, and the minimum width is 4 - 5 mm. In addition, C in the figure represents a full fillet, that is, the cross-section at the bottom of the pattern groove is arc-shaped.

[0066] As Figure 8, for the pattern grooves Ⅰ, Ⅲ, and Ⅴ, the pattern grooves extend downward from the tire surface with a constant width, and the bottoms of the pattern grooves are arc-shaped.

[0067] The depth L1 of the pattern groove Ⅰ is 15 - 16 mm, and the width W1 is 1.2 - 1.5 mm respectively; the depth L1 of the pattern groove Ⅲ is 15 - 16 mm, the width W1 is 1.2 - 1.5 mm respectively, and the width W1 is 0.7 - 0.8 mm; the depth L1 of the pattern groove Ⅴ is 10 - 11 mm, and the width W1 is 1 - 1.2 mm.

[0068] The depth of the horizontal transverse groove 15 is 0.6 - 0.8 mm, and the width is 6 - 8 mm; the depth of the horizontal transverse groove on the pattern block Ⅴ is 8 - 10 mm, the width is 4 - 6 mm, and the depth of the variable-angle transverse groove is 12 - 14 mm, and the width is 6 - 14 mm.

[0069] Two adjacent transverse grooves Ⅱ13 on the same pattern block are formed together by a 2D steel sheet, as Figure 3 is the vertical sectional view of the 2D steel sheet and also the sectional view of two adjacent transverse grooves Ⅱ13; the 2D steel sheet is in an "n" shape, so the distance between the two far sides between two adjacent transverse grooves Ⅱ13 is the size of W1 of the 2D steel sheet, which is 3 - 6 mm; the distance between the two nearest sides between two adjacent transverse grooves Ⅱ13 is the size of W2 of the 2D steel sheet, which is 2 - 4 mm; the depth of the transverse groove Ⅱ13 is the size of L1 of the 2D steel sheet, which is 12 - 14 mm; the normal distance from the part between two adjacent transverse grooves Ⅱ13 to the tread is the size of L2 of the 2D steel sheet, which is 1.5 - 3 mm. In addition, C in the figure represents that the bottom of the steel sheet is a full fillet, that is, the bottom cross-section of the transverse groove Ⅱ13 is arc-shaped.

[0070] The transverse groove Ⅰ on the pattern block is formed by a 3D steel sheet, and the 3D steel sheet is in a "wave" shape, as Figure 4 is the vertical sectional view of the 3D steel sheet and also the sectional view of the transverse groove Ⅰ; the width of the transverse groove Ⅰ at the same depth is the size of W1 of the 3D steel sheet, which is 0.6 - 0.8 mm; the depth of the transverse groove Ⅰ is the size of L1 of the 3D steel sheet, which is 6 - 10 mm; in addition, the transverse groove Ⅰ has vertical sections at the uppermost and lowermost ends, and the sizes of these two vertical sections are the sizes of L1 and L2 of the 3D steel sheet respectively, the size of L1 is 5 - 7 mm, and the size of L2 is 2 - 3 mm. The middle curved section of the transverse groove Ⅰ is in an S shape, and this part of the size is L - L1 - L2. In addition, C in the figure represents a full fillet, that is, the middle curved section is in an S shape.

[0071] The transverse groove Ⅲ on the pattern block is formed by a 2D steel sheet, as Figure 5It is a vertical sectional view of the 2D steel sheet and also a sectional view of the horizontal knife groove Ⅲ; the width of the horizontal knife groove Ⅲ is the dimension of the 2D steel sheet W1, which is 0.8 - 1 mm; the depth of the horizontal knife groove Ⅲ is the dimension of the 2D steel sheet L1, which is 2 - 4 mm; in addition, C in the figure represents a full fillet, that is, the bottom section of the horizontal knife groove Ⅲ is arc-shaped.

[0072] The horizontal transverse knife grooves on the tread block Ⅴ are formed by 2D steel sheets, as Figure 6 It is a vertical sectional view of the 2D steel sheet and also a sectional view of the horizontal transverse knife groove; the width of the horizontal transverse knife groove is the dimension of the 2D steel sheet W1, which is 0.4 - 0.6 mm; the depth of the horizontal transverse knife groove is the dimension of the 2D steel sheet L1, which is 8 - 10 mm; in addition, C in the figure represents a full fillet, that is, the bottom section of the horizontal transverse knife groove is arc-shaped.

[0073] The vertical knife grooves on the tread block Ⅴ are formed by 2D steel sheets, as Figure 6 It is a vertical sectional view of the 2D steel sheet and also a sectional view of the vertical knife groove; the width of the vertical knife groove is the dimension of the 2D steel sheet W1, which is 0.4 - 0.6 mm; the depth of the vertical knife groove is the dimension of the 2D steel sheet L1, which is 8 - 10 mm; in addition, C in the figure represents a full fillet, that is, the bottom section of the vertical knife groove is arc-shaped.

[0074] For the tire tread with the above knife groove depth, after 50% wear, the surface of the tread pattern when it is just used in summer is as Figure 9 shown. The customer installs the tires around October, uses them in winter until April of the next year, and uses them in summer from April to October, and the life cycle of the tires is completed.

[0075] The combined design of the tread block knife grooves in this application enhances the rain and snow drainage performance of the tread pattern. Combining with the reinforcing rib design between the blocks, the overall handling stability of the tire is improved.

[0076] The tread pattern saturation is 67 - 73%, such as it can be 70%. To a certain extent, it can increase the product mileage.

[0077] The tread blocks Ⅰ, Ⅱ, Ⅲ, and Ⅳ adopt an equal pitch design, and the number of pitches can be 60.

[0078] The tread block Ⅴ adopts an equal pitch design, and the number of pitches can be 30.

[0079] The overall pattern is designed with nearly 1000 3D steel sheets, which can ensure the grip and handling stability on ice and snow roads; the pattern groove design form of this application, combined with the open shoulder design, can not only ensure the traction in the straight direction of the tire but also improve the drainage performance of the tire.

[0080] The above are only the preferred embodiments of the present utility model, rather than all the embodiments. The protection scope of the present utility model is not limited thereto. The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model. It should be noted that for those skilled in the art and any person familiar with the technical field, without departing from the overall concept of the present utility model and the spirit of the principle of the present utility model, equivalent replacements or changes made according to the technical solutions of the present utility model and its inventive concept, as well as several changes and improvements made, should also be regarded as within the protection scope of the present utility model.

Claims

1. A winter and summer dual-use studless snow tire pattern suitable for icy and snowy roads, characterized by: The tire comprises a tread pattern, wherein the tread pattern comprises pattern blocks and pattern grooves arranged along the circumferential direction of the tire, wherein the tire widthwise center is pattern groove I (1), and from pattern groove I to the left and right are pattern block I (6), pattern groove II (2), pattern block II (7), pattern groove III (3), pattern block III (8), pattern groove IV (4), pattern block IV (9), pattern groove V (5), and pattern block V (10), wherein the widths of pattern groove I (1), pattern groove III (3), and pattern groove V (5) are smaller than the widths of pattern groove II (2) and pattern groove IV (4); for pattern block I (6), pattern block II (7), pattern block III (8), and pattern block IV (9), adjacent pattern blocks in the same circumferential direction are connected by reinforcing ribs (11); The tread blocks I (6), II (7), III (8) and IV (9) are provided with transverse slits III (14), I (12), II (13), II (13), I (12) and III (14) respectively from top to bottom; the transverse slits I (12) and II (13) are connected to the tread grooves on the left and right sides of the tread blocks respectively, thereby dividing the tread blocks into five parts from top to bottom. ; Horizontal transverse sipes (15) are provided between circumferentially adjacent pattern blocks V (10); one of two adjacent pattern blocks V (10) is provided with a horizontal transverse groove (16), and the other is provided with a variable-angle transverse groove (17), and the tread shoulder is an open shoulder; wherein a vertical sipe (18) is provided in the middle of each pattern block V, and is connected to the horizontal transverse groove and the variable-angle transverse groove (17), respectively, and the horizontal transverse groove and the variable-angle transverse groove (17) are provided with vertical sipes (18) above and below, respectively; The groove is provided with a wear indicator (19), the depth of which is designed to correspond to half of the groove depth or other depth less than the groove depth; The depth of the transverse sipe I (12), the depth of the horizontal transverse sipe (15), the depth of the vertical sipe (18), and the depth of the horizontal transverse groove (16) are less than or equal to the depth of the wear indicator (19); the depth of the transverse sipe II (13), the depth of the variable angle transverse groove (17), and the depth of the reinforcing rib (11) are greater than the depth of the wear indicator (19).

2. The studless snow tire pattern suitable for winter and summer use on icy and snowy roads according to claim 1, characterized in that: The wear indicators (19) are evenly distributed along the circumference of the corresponding groove.

3. The studless snow tire pattern suitable for winter and summer use on icy and snowy roads according to claim 1, characterized in that: The variable angle transverse groove (17) is a symmetrical structure, and from the pattern groove V to the tire sidewall, the upper edge of the groove wall on one side is in sequence a horizontal straight line I (170), a fold line I (171), a horizontal straight line II (172), a fold line II (173), a horizontal straight line III (174), a fold line III (175), a horizontal straight line I (170), a fold line I (171), a horizontal straight line II (172), and a fold line II (173) located on the pattern block V (10), and the width of the variable angle transverse groove increases from the pattern groove V to the tire sidewall, and the fold line III causes the width of the variable angle transverse groove to gradually decrease; The vertical sipe (18) is located in the middle of the pattern block V; the vertical sipe (18) is connected to the position where the horizontal straight line II (172) of the variable angle transverse groove (17) is located; In the portion corresponding to the horizontal straight line III and the broken line III of the variable angle transverse groove, the horizontal transverse groove is connected to a symmetrical groove, and the width of the symmetrical groove (20) gradually decreases.

4. The studless snow tire pattern suitable for winter and summer use on icy and snowy roads according to claim 1, characterized in that: On both sides of pattern blocks Ⅰ, Ⅱ, Ⅲ and Ⅳ, one side is a wider pattern groove and the other side is a narrower pattern groove; the transverse sipes Ⅰ, Ⅱ and Ⅲ on each pattern block are inclined in the same direction; For pattern blocks I, II and III, from the wider pattern groove to the narrower pattern groove, when the transverse sipe I is arranged obliquely from top to bottom, the portion of the pattern block where the upper transverse sipe IV is located extends into the narrower pattern groove to form a protrusion toward the narrower pattern groove; When the transverse sipe I is arranged obliquely from bottom to top from the wider groove to the narrower groove, the portion of the block where the lower transverse sipe IV is located extends into the narrower groove to form a protrusion toward the narrower groove; The pattern block portion formed by the transverse sipes I and II on the pattern blocks III (8) and IV (9) dividing the pattern blocks extends toward the wider pattern grooves to form a protrusion toward the wider pattern grooves; and the corner of the pattern block formed between the transverse sipes I and the wider pattern grooves is a chamfer.

5. The studless snow tire pattern suitable for winter and summer use on icy and snowy roads according to claim 4, characterized in that: The edges of the pattern blocks I (6) and II (7) close to the wider pattern grooves are curved, and the edges close to the narrower pattern grooves are broken lines; The edge of the pattern block III (8) close to the wider pattern groove is a broken line, and the edge close to the narrower pattern groove is a broken line; The side of the pattern block IV (9) close to the wider pattern groove is a broken line, and the side close to the narrower pattern groove is a straight line.

6. The studless snow tire pattern suitable for both winter and summer use on icy and snowy roads according to claim 5, characterized in that: In the pattern block I of the left pattern, from the wider pattern groove to the narrower pattern groove, the transverse sipe I is arranged obliquely from top to bottom, and the portion of the pattern block where the upper transverse sipe IV is located extends into the narrower pattern groove to form a bulge toward the narrower pattern groove; In the pattern block II of the left pattern, from the wider pattern groove to the narrower pattern groove, the transverse sipe I is arranged obliquely from top to bottom, and the portion of the pattern block where the upper transverse sipe IV is located extends into the narrower pattern groove to form a bulge toward the narrower pattern groove; In the pattern block III of the left pattern, from the wider pattern groove to the narrower pattern groove, the transverse sipe I is arranged obliquely from bottom to top, and the portion of the pattern block where the lower transverse sipe IV is located extends into the narrower pattern groove to form a bulge toward the narrower pattern groove; In the pattern block IV of the left pattern, from the wider groove to the narrower groove, the transverse sipe I is tilted upward from bottom to top, and the part of the pattern block where the lower transverse sipe IV is located extends into the narrower groove to form a bulge toward the narrower groove.

7. The studless snow tire pattern suitable for winter and summer use on icy and snowy roads according to claim 4, characterized in that: In the cross-sectional view, the widthwise edges of the pattern blocks I (6), II (7), III (8) and IV (9) are arranged to be inclined in the same direction as the transverse sipe I.

8. The studless snow tire pattern suitable for winter and summer use on icy and snowy roads according to claim 7, characterized in that: In the cross-sectional view, the edges of the pattern blocks I (6), II (7), III (8) and IV (9) in the width direction are consistent with the inclination angle of the transverse sipe I, and the inclination angles of the transverse sipe I, II and III are consistent.

9. The studless snow tire pattern suitable for winter and summer use on icy and snowy roads according to any one of claims 1 to 8, characterized in that: The tread pattern is centrally symmetrical; the tread pattern saturation is 67-73%.

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