Multi-dimensional deep sipe all-season tire

Abstract

This invention relates to the field of tire tread patterns and discloses a multi-dimensional depth groove all-season tire. The tire has multiple multi-dimensional grooves and sipes. The multi-dimensional grooves have stepped groove bottoms of equal width and three-dimensional depth, including a first groove bottom, a second groove bottom, and a third groove bottom. The depths of these groove bottoms from the tire tread are 2mm, 4mm, and 6mm, respectively. The angle between the groove walls on both sides and the longitudinal direction is 1°–2°. The angle between the groove wall between the first and second groove bottoms and the longitudinal direction is 1°–2°, and the angle between the groove wall between the second and third groove bottoms and the longitudinal direction is 2°–3°. The intersections of the groove bottoms are rounded, with positive corners rounded to R0.4–R0.6 and negative corners rounded to R0.1–R0.3. The multi-dimensional groove design can effectively improve the tire's snow traction, snow grip, and hydroplaning performance on icy and wet surfaces, and eliminate resonance; the serrated three-dimensional groove design can further enhance tire grip; the asymmetrical staggered arrangement of tread blocks can significantly reduce tire rolling noise.

Description

Technical Field

[0001] This invention relates to the field of tire tread design, and more specifically, to a multi-dimensional deep groove all-season tire. Background Technology

[0002] With the widespread use of all-season tires, more and more tire companies are designing tire treads in a way that is a hybrid of summer and winter tires, in order to cope with different road conditions. Although the existing all-season tire designs take into account most of the problems of tires on icy and snowy surfaces, it is still difficult to improve the grip on icy and snowy roads. How to further improve the grip of all-season tires on icy and snowy surfaces has become an important issue that tire technicians urgently need to solve.

[0003] Tire grooves serve multiple functions, primarily including water drainage, increased grip, noise reduction, and reduced sideslip. The groove design increases the contact area between the tire and the road surface, thereby improving friction and enhancing tire grip. On dry roads, the groove design also provides better traction and braking, ensuring stable vehicle operation in various road conditions. At high speeds, tire-road friction generates noise. The groove design effectively dissipates this noise and reduces the tire-road contact area, thus lowering noise levels.

[0004] Tire sipes also serve multiple functions, not only improving the vehicle's friction and drainage performance, but also significantly enhancing handling performance and driving safety, ensuring the vehicle's stability and reliability under different road conditions. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a multi-dimensional deep groove all-season tire that exhibits good snow traction, snow grip, and hydroplaning performance in icy and wet conditions.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A multi-dimensional deep groove all-season tire includes a central rib, a left rib, a right rib, a left shoulder rib, and a right shoulder rib extending along the tire circumference; the central rib is located in the center of the tread, and side ribs and shoulder ribs are arranged sequentially from the inside to the outside on the left and right sides of the central rib, respectively; the tire includes a first longitudinal main groove, a second longitudinal main groove, a third longitudinal main groove, and a fourth longitudinal main groove extending along the tire circumference from left to right, and the main grooves are distributed at intervals between the ribs;

[0008] The middle rib is divided into several first patterned blocks by a first combined groove that is set horizontally at an inclination. The first combined groove includes a first multidimensional groove and a first cutting groove. The bottom of the first multidimensional groove is flush with the bottom of the first cutting groove. The left end of the first multidimensional groove is connected to the second longitudinal main groove. The first cutting groove extends from the right end of the first multidimensional groove to be connected to the third longitudinal main groove.

[0009] The left rib is divided into several "V"-shaped second patterned blocks by the second combined groove. The first combined groove includes a second multi-dimensional groove and a second cutting groove. The left end of the second multi-dimensional groove and the right end of the second cutting groove are connected to form a "V" shape with an included angle of 105-115°. The right end of the second multi-dimensional groove is connected to the second longitudinal main groove, and the left end of the second cutting groove is connected to the first longitudinal main groove. The second patterned block is also provided with a curved multi-dimensional groove, and the left end of the curved multi-dimensional groove is connected to the first longitudinal main groove.

[0010] The right rib is divided into several third patterned blocks by a third combined groove that is set horizontally and inclined. The third combined groove includes a third multidimensional groove and a third cutting groove. The bottom of the third multidimensional groove is flush with the bottom of the third cutting groove. The right end of the third multidimensional groove is connected to the fourth longitudinal main groove. The third cutting groove extends from the left end of the third multidimensional groove to be connected to the third longitudinal main groove.

[0011] The left shoulder rib is divided into several fourth patterned blocks by a fourth combined groove that is set horizontally at an inclination. The fourth combined groove includes a fourth multi-dimensional groove and a fourth groove. The interface between the fourth multi-dimensional groove and the fourth groove is the same width. The right end of the fourth multi-dimensional groove is connected to the first longitudinal main groove. The fourth groove extends from the left end of the fourth multi-dimensional groove to the left edge of the left shoulder rib. A fourth cutting groove is also provided inside the fourth patterned block. The fourth cutting groove extends from the left end of the upper fourth groove at a vertical angle of 24-28° to the lower fourth groove.

[0012] The right shoulder rib has a longitudinal secondary groove near the left edge inside, and is divided into several fifth pattern blocks by a fifth groove arranged laterally. The fifth pattern block has a fifth combined groove inside. The fifth combined groove includes a fifth multidimensional groove and a fifth groove. The interface between the fifth multidimensional groove and the fifth groove is the same width. The right end of the fifth multidimensional groove passes through the longitudinal secondary groove and is not connected to the fourth longitudinal main groove. The fifth groove extends from the right end of the fifth multidimensional groove to the right edge of the right shoulder rib.

[0013] The tread blocks are asymmetrically staggered on the left and right sides of the tread with the circumferential central axis of the tread. Therefore, the tread blocks on the left and right sides of the tread are asymmetrically staggered. The tread blocks are arranged in an optimized staggered manner to avoid resonance noise during tire rotation and to significantly reduce tire rolling noise.

[0014] The aforementioned multi-dimensional grooves result in a more diverse and upgraded tread block structure. When the tire rotates and touches the ground, the air noise generated by the multi-dimensional grooves and tread blocks is at different frequencies, eliminating resonance. The multi-dimensional grooves and tread blocks also generate different stresses, providing diverse grip for all-season tires on icy and snowy roads, making the tires easier to grip and greatly improving the grip performance of all-season tires.

[0015] The multi-dimensional grooves feature stepped groove bottoms of equal width and three-dimensional depth, comprising a first, second, and third groove bottom. The depths of these groove bottoms from the tire tread are 2mm, 4mm, and 6mm, respectively. The angles between the groove walls on both sides and the longitudinal direction are 1°-2°. The angle between the groove wall between the first and second groove bottoms and the longitudinal direction is 1°-2°, and the angle between the groove wall between the second and third groove bottoms and the longitudinal direction is 2°-3°. The intersections of the groove bottoms are rounded, with positive corners rounded to R0.4-R0.6 and negative corners rounded to R0.1-R0.3. This design ensures maximum snow catchment area in the longitudinal grooves while maximizing the centrifugal force on the snow during movement and minimizing tire groove wall resistance. Under the interaction of the tire and the ground, the multi-dimensional stepped groove bottoms more easily form a snow removal and release angle, facilitating the discharge of snow and meltwater, increasing the contact area between the tire and the ground, maximizing snow removal, and thus improving tire grip.

[0016] The multiple multi-dimensional grooves designed above, namely the multi-dimensional stepped groove bottoms with different heights on the inner walls and bottoms of the main transverse grooves, can reduce turbulence near the groove walls. Because the turbulence is in contact with the apex and slope of each layer of the multi-dimensional stepped groove bottom, the turbulence is confined to the multi-dimensional stepped groove bottom, thus improving the hydroplaning performance of the tire on icy and snowy wet roads. During the tire's driving on icy and snowy roads, under the action of snow or snow water, the multi-dimensional grooves generate a reaction force. In addition, the elastic deformation of the rubber is subjected to the reaction force on the snow blocks and snow water in the groove. The resultant force is perpendicular to the multi-dimensional stepped grooves and upwards. The shear stress Fs of the snow in the gaps increases. The shear strength increases due to the compression of the vertical force. This shear stress is within the shear strength of the snow, effectively improving the tire's traction and grip on icy and snowy surfaces.

[0017] Preferably, the first patterned block has two sixth grooves arranged laterally at an angle, and both ends of the grooves are connected to the adjacent main groove.

[0018] The third patterned block has a seventh groove vertically inclined inside, which divides the third patterned block into two trapezoids by connecting the third multidimensional groove and the third groove. The right trapezoidal patterned block has an eighth and a ninth groove horizontally inclined inside, and the left trapezoidal patterned block has a tenth and an eleventh groove horizontally inclined inside. The tenth, eighth, eleventh, and ninth grooves are arranged in parallel and staggered order.

[0019] The fourth patterned block has a twelfth and thirteenth groove arranged horizontally inside. The twelfth and thirteenth grooves are located to the right of the fourth groove. The right end of the thirteenth groove is connected to the first longitudinal main groove, and the right end of the twelfth groove is connected to the first longitudinal main groove through a trapezoidal groove.

[0020] The fifth patterned block has two fourteenth grooves arranged horizontally inside. The two fourteenth grooves are located above and below the fifth groove, respectively. The left end of the fourteenth groove is connected to the longitudinal secondary groove, and the right end is located inside the patterned block.

[0021] A well-designed arrangement of multiple grooves can increase tire friction and improve grip performance.

[0022] Preferably, in the first patterned block, the first multidimensional groove and the first cutting groove have the same inclination angle;

[0023] The first multidimensional groove has a maximum angle of 15-25° with the horizontal, and the groove width is a gradually changing width of 3-4mm, gradually narrowing from the outer end to the inner end.

[0024] The first groove has an angle of 15-25° with the horizontal, a groove width of 0.6-1mm, and a depth of 3-6mm;

[0025] The sixth groove has an angle of 15-25° with the horizontal, a groove width of 0.6-1mm, and a depth of 3-6mm.

[0026] Preferably, in the second patterned block, the second multidimensional groove has an angle of 15-25° with the horizontal and a groove width of 3-4 mm.

[0027] The second groove has an angle of 40-60° with the horizontal, a groove width of 0.6-1mm, and a depth of 3-6mm;

[0028] The curved multidimensional groove has a maximum angle of 55-70° with the horizontal, and the groove width is a gradually changing width of 3-4mm, gradually narrowing from the outer end to the inner end.

[0029] Preferably, in the third patterned block, the third multidimensional groove and the third cutting groove have the same inclination angle; the third cutting groove is parallel to the eighth, ninth, tenth, and eleventh cutting grooves.

[0030] The third multidimensional groove has a maximum angle of 15-25° with the horizontal, and the groove width is a gradually changing width of 3-4mm, which gradually narrows from the outer end to the inner end.

[0031] The seventh groove has an angle of 50-60° with the horizontal, a groove width of 0.6-1mm, and a depth of 3-6mm;

[0032] The third, eighth, ninth, tenth, and eleventh grooves have an angle of 15-25° with the horizontal, a groove width of 0.6-1mm, and a depth of 3-6mm.

[0033] Preferably, in the fourth patterned block, the fourth multidimensional groove has an angle of 5°-10° with the horizontal and a groove width of 3.5-5mm;

[0034] The fourth groove has a maximum angle of 5°-10° with the horizontal, a width of 3.5-5mm, and a depth of 8-8.5mm.

[0035] The fourth cutting groove is 0.6-1mm wide and 2-6mm deep;

[0036] The twelfth and thirteenth grooves have an angle of 5-10° with the horizontal, a groove width of 0.6-1mm, and a depth of 2-6mm.

[0037] Preferably, in the fifth patterned block, the fifth multidimensional groove has an angle of 15-20° with the horizontal, and the groove width is a gradually changing width of 3-4mm, with the outer end gradually narrowing towards the inner end.

[0038] The fifth groove has an angle of 15-20° with the horizontal, a width of 3-4mm, and a depth of 8-8.5mm.

[0039] The fifth and fourteenth cutting grooves have an angle of 15-20° with the horizontal, a groove width of 0.6-1mm, and a depth of 2-6mm.

[0040] Preferably, the second, sixth, twelfth, and fourteenth cutting grooves are serrated.

[0041] Serrated three-dimensional sipes significantly improve the tire's coefficient of friction on icy and snowy roads because they not only absorb moisture from between the tire and the road surface but also penetrate deep into the ice or snow. The serrated three-dimensional sipes give the rubber block a multi-dimensional geometric shape in the depth direction, enhancing the shear self-locking ability between the rubber blocks and thus improving the contact area. The vertical contact force borne by the serrated three-dimensional sipe rubber block is greater than that of the rubber block with ordinary two-dimensional sipes. Therefore, under shear loads, the frictional displacement rate of the rubber block with serrated three-dimensional sipes is greatly reduced, resulting in a significant increase in grip.

[0042] The beneficial effects of this invention are as follows:

[0043] 1) The tread blocks are asymmetrically staggered on the left and right sides of the tread with the circumferential centerline of the tread to avoid resonance noise during tire rotation and to significantly reduce tire rolling noise.

[0044] 2) The multi-dimensional grooves make the resulting tread block structure more diverse and upgraded. When the tire rotates and touches the ground, the air noise generated by the multi-dimensional grooves and tread blocks is at different frequencies, thus eliminating resonance.

[0045] 3) The multi-dimensional groove design makes it easier to form a snow removal and release angle, making it easier to remove snow and snow water, increasing the contact area between the tire and the ground, maximizing the removal of snow, and under the action of snow or snow water, the multi-dimensional groove forms a reaction force, plus the elastic deformation of the rubber is subjected to the reaction force on the snow and snow water in the groove, effectively improving the tire's traction and grip on icy and snowy ground.

[0046] 4) Multi-dimensional grooves can restrict turbulence on the multi-dimensional stepped groove bottom, thereby improving the hydroplaning performance of tires on icy and wet roads;

[0047] 5) The serrated three-dimensional grooves can improve the friction coefficient of the tire on icy and snowy roads, thereby reducing the friction displacement rate of the rubber block, which improves the tire grip. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of the structure of an all-season tire tread unfolded into a plane.

[0049] Figure 2 Cross-sectional view of a multidimensional transverse trench.

[0050] Figure 3 This is a force diagram of a multidimensional trench, where F is the force exerted by the snow and snowmelt, and Fs is the reaction force.

[0051] Attached reference numerals: 21-First longitudinal main ditch, 22-Second longitudinal main ditch, 23-Third longitudinal main ditch, 24-Fourth longitudinal main ditch, 25-Longitudinal secondary ditch;

[0052] 11-Intermediate rib, 31-First cutting groove, 41-First multi-dimensional groove, 51-Sixth cutting groove;

[0053] 12-Left side rib, 32-Second cutting groove, 42-Second multi-dimensional groove, 52-Curved multi-dimensional groove;

[0054] 13-Right side rib, 33-Third groove, 43-Third multi-dimensional groove, 53-Seventh groove, 63-Eighth groove, 73-Ninth groove, 83-Tenth groove, 93-Eleventh groove;

[0055] 14-Left shoulder rib, 34-Fourth groove, 44-Fourth multidimensional groove, 64-Fourth groove, 74-Twelfth groove, 84-Thirteenth groove, 94-Trapezoidal groove;

[0056] 15-Right shoulder rib, 35-Fifth incision groove, 45-Fifth multidimensional groove, 65-Fifth groove, 75-Fourteenth incision groove;

[0057] 01 - First ditch bottom, 02 - Second ditch bottom, 03 - Third ditch bottom. Detailed Implementation

[0058] 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.

[0059] 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. Example

[0060] A multi-dimensional deep groove all-season tire, such as Figure 1 , 2 As shown. The tire includes a central rib 11, a left rib 12, a right rib 13, a left shoulder rib 14, and a right shoulder rib 15 extending along the tire circumference; the central rib 11 is located in the center of the tread, and side ribs and shoulder ribs are arranged sequentially from the inside to the outside on the left and right sides of the central rib 11, respectively; the tire includes a first longitudinal main groove 21, a second longitudinal main groove 22, a third longitudinal main groove 23, and a fourth longitudinal main groove 24 extending along the tire circumference from left to right, and the above main grooves are distributed at intervals between the ribs.

[0061] The intermediate rib 11 is divided into several first patterned blocks by a first combined groove arranged laterally at an incline. The first combined groove includes a first multi-dimensional groove 41 and a first cutting groove 31. The bottom of the first multi-dimensional groove 41 is flush with the bottom of the first cutting groove 31. The left end of the first multi-dimensional groove 41 is connected to the second longitudinal main groove 22. The first cutting groove 31 extends from the right end of the first multi-dimensional groove 41 to connect with the third longitudinal main groove 23. Two sixth cutting grooves 51 are arranged laterally at an incline inside the first patterned block. Both ends of the cutting grooves are connected to the adjacent main grooves.

[0062] The left rib 12 is divided into several "V"-shaped second patterned blocks by the second combined groove. The first combined groove includes a second multi-dimensional groove 42 and a second cutting groove 32. The left end of the second multi-dimensional groove 42 and the right end of the second cutting groove 32 are connected to form a "V" shape with an included angle of 110°. The right end of the second multi-dimensional groove 42 is connected to the second longitudinal main groove 22, and the left end of the second cutting groove 32 is connected to the first longitudinal main groove 21. The second patterned block is also provided with a curved multi-dimensional groove 52, the left end of which is connected to the first longitudinal main groove 21.

[0063] The right-side rib 13 is divided into several third patterned blocks by a third combined groove arranged laterally at an incline. The third combined groove includes a third multidimensional groove 43 and a third cutting groove 33. The bottom of the third multidimensional groove 43 is flush with the bottom of the third cutting groove 33. The right end of the third multidimensional groove 43 is connected to the fourth longitudinal main groove 24. The third cutting groove 33 extends from the left end of the third multidimensional groove 43 to connect with the third longitudinal main groove 23. A seventh cutting groove 53 is arranged vertically at an incline inside the third patterned block. The seventh cutting groove 53 divides the third patterned block into two trapezoids by connecting the third multidimensional groove 43 and the third cutting groove 33. An eighth cutting groove 63 and a ninth cutting groove 73 are arranged laterally at an incline inside the right trapezoidal patterned block. A tenth cutting groove 83 and an eleventh cutting groove 93 are arranged laterally at an incline inside the left trapezoidal patterned block. The tenth cutting groove 83, the eighth cutting groove 63, the eleventh cutting groove 93, and the ninth cutting groove 73 are arranged in parallel and staggered order.

[0064] The left shoulder rib 14 is divided into several fourth patterned blocks by a fourth combined groove arranged laterally at an incline. The fourth combined groove includes a fourth multi-dimensional groove 44 and a fourth groove 64. The interface between the fourth multi-dimensional groove 44 and the fourth groove 64 is flush. The right end of the fourth multi-dimensional groove 44 is connected to the first longitudinal main groove 21. The fourth groove 64 extends from the left end of the fourth multi-dimensional groove 44 to the left edge of the left shoulder rib 14. A fourth cutting groove 34 is also provided inside the fourth patterned block. The fourth cutting groove 34 extends from the left end of the upper fourth groove 64 at a vertical angle of 26° to the lower fourth groove 64. A twelfth cutting groove 74 and a thirteenth cutting groove 84 are arranged laterally at an incline inside the fourth patterned block. The twelfth cutting groove 74 and the thirteenth cutting groove 84 are located to the right of the fourth cutting groove 34. The right end of the thirteenth cutting groove 84 is connected to the first longitudinal main groove 21. The right end of the twelfth cutting groove 74 is connected to the first longitudinal main groove 21 through a trapezoidal groove 94.

[0065] The right shoulder rib 15 has a longitudinal secondary groove 25 near its left edge, which is divided into several fifth patterned blocks by a fifth groove 35 arranged laterally. Each fifth patterned block contains a fifth combined groove, including a fifth multi-dimensional groove 45 and a fifth groove 65. The interfaces of the fifth multi-dimensional groove 45 and the fifth groove 65 are flush. The right end of the fifth multi-dimensional groove 45 passes through the longitudinal secondary groove 25 but does not connect with the fourth longitudinal main groove 24. The fifth groove 65 extends from the right end of the fifth multi-dimensional groove 45 to the right edge of the right shoulder rib 15. Two fourteenth grooves 75 are arranged laterally at an angle inside each of the fifth patterned blocks. The two fourteenth grooves 75 are located above and below the fifth groove 35, respectively. The left end of the fourteenth groove 75 connects to the longitudinal secondary groove 25, and the right end is located inside the patterned block.

[0066] The tread blocks are asymmetrically distributed on the left and right sides of the tread along the circumferential central axis.

[0067] The multidimensional groove has a stepped groove bottom with equal width and three-dimensional depth. The stepped groove bottom includes a first groove bottom 01, a second groove bottom 02, and a third groove bottom 03. The depths of the groove bottoms from the tread are 2mm, 4mm, and 6mm, respectively. The angle between the groove walls on both sides and the longitudinal direction is 2°. The angle between the groove wall between the first groove bottom 01 and the second groove bottom 02 and the longitudinal direction is 2°. The angle between the groove wall between the second groove bottom 02 and the third groove bottom 03 and the longitudinal direction is 3°. The intersection of the groove bottoms is rounded, with the positive corner rounded by R0.5 and the negative corner rounded by R0.2.

[0068] Furthermore, in the first patterned block, the first multidimensional groove 41 has an angle of 25° with the horizontal, and the groove width is a gradually changing width of 3-4mm, gradually narrowing from the outer end to the inner end;

[0069] The first groove 31 and the sixth groove 51 form an angle of 25° with the horizontal, with a groove width of 0.8 mm and a depth of 5 mm.

[0070] Furthermore, in the second patterned block, the second multidimensional groove 42 has an angle of 25° with the horizontal and a groove width of 3.5mm;

[0071] The second groove 32 has an angle of 45° with the horizontal, a groove width of 0.8 mm, and a depth of 5 mm;

[0072] The curved multidimensional groove 52 has an angle of 60° with the horizontal, and the groove width is a gradually changing width of 3-4mm, gradually narrowing from the outer end to the inner end.

[0073] Furthermore, in the third patterned block, the third multidimensional groove 43 has an angle of 25° with the horizontal, and the groove width is a gradually changing width of 3-4mm, gradually narrowing from the outer end to the inner end;

[0074] The seventh groove 53 has an angle of 55° with the horizontal, a groove width of 0.8 mm, and a depth of 5 mm;

[0075] The third groove 33, the eighth groove 63, the ninth groove 73, the tenth groove 83, and the eleventh groove 93 form an angle of 25° with the horizontal, with a groove width of 0.8 mm and a depth of 5 mm.

[0076] Furthermore, in the fourth patterned block, the fourth multidimensional groove 44 has an angle of 10° with the horizontal and a groove width of 5mm;

[0077] The fourth groove 64 has an angle of 10° with the horizontal, a width of 3.5-5mm, and a depth of 85mm.

[0078] The fourth groove 34 has a width of 0.6-1mm and a depth of 2-6mm;

[0079] The twelfth groove 74 and the thirteenth groove 84 form an angle of 10° with the horizontal, with a groove width of 0.8 mm and a depth of 5 mm.

[0080] Furthermore, in the fifth patterned block, the fifth multidimensional groove 45 has an angle of 20° with the horizontal, and the groove width is a gradually changing width of 3-4mm, gradually narrowing from the outer end to the inner end;

[0081] The fifth groove 65 has an angle of 20° with the horizontal, a width of 3-4mm (uneven width), and a depth of 8mm;

[0082] The fifth groove 35 and the fourteenth groove 75 are at an angle of 20° to the horizontal, with a groove width of 0.8 mm and a depth of 5 mm.

[0083] Furthermore, the second groove 32, the sixth groove 51, the twelfth groove 74, and the fourteenth groove 75 are serrated.

[0084] Comparative Example 1

[0085] The multidimensional trenches in Example 1 were all replaced with ordinary trenches.

[0086] Example 1 and Comparative Example 1 were compared through testing. The tests were conducted according to UNECE / R117 regulations. Grip testing included braking tests on vehicles equipped with ABS. Shorter stopping distances indicate better tire performance.

[0087] Table 1

[0088]

[0089] As shown in Table 1, the experimental data comparison between Comparative Example 1 and Example 1 shows that Example 1 has a shorter acceleration time from 0-30 km / h and better traction per unit distance in ice and snow tests; Example 1 also has a shorter braking distance in ice and snow tests and better braking performance per unit distance. In summary, the tires in Example 1 have higher grip and better braking performance than those in Comparative Example 1.

[0090] 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 multi-dimensional deep groove all-season tire, the tire comprising a central rib (11), a left rib (12), a right rib (13), a left shoulder rib (14), and a right shoulder rib (15) extending along the tire circumference; the central rib (11) is located in the center of the tread, and side ribs and shoulder ribs are respectively arranged on the left and right sides of the central rib (11) from the inside out; the tire comprises, from left to right, a first longitudinal main groove (21), a second longitudinal main groove (22), a third longitudinal main groove (23), and a fourth longitudinal main groove (24) extending along the tire circumference, the main grooves being spaced apart between the ribs; characterized in that, The middle rib (11) is divided into several first patterned blocks by a first combined groove that is set horizontally and inclined. The first combined groove includes a first multidimensional groove (41) and a first cutting groove (31). The bottom of the first multidimensional groove (41) is flush with the bottom of the first cutting groove (31). The left end of the first multidimensional groove (41) is connected to the second longitudinal main groove (22). The first cutting groove (31) extends from the right end of the first multidimensional groove (41) to be connected to the third longitudinal main groove (23). The left rib (12) is divided into several "V"-shaped second patterned blocks by the second combined groove. The first combined groove includes a second multidimensional groove (42) and a second cutting groove (32). The left end of the second multidimensional groove (42) is connected to the right end of the second cutting groove (32) to form a "V" shape. The included angle of the "V" shape is 105-115°. The right end of the second multidimensional groove (42) is connected to the second longitudinal main groove (22). The left end of the second cutting groove (32) is connected to the first longitudinal main groove (21). The second patterned block is also provided with a curved multidimensional groove (52). The left end of the curved multidimensional groove (52) is connected to the first longitudinal main groove (21). The right rib (13) is divided into several third patterned blocks by a third combined groove that is set horizontally and inclined. The third combined groove includes a third multidimensional groove (43) and a third cutting groove (33). The bottom of the third multidimensional groove (43) is flush with the bottom of the third cutting groove (33). The right end of the third multidimensional groove (43) is connected to the fourth longitudinal main groove (24). The third cutting groove (33) extends from the left end of the third multidimensional groove (43) to be connected to the third longitudinal main groove (23). The left shoulder rib (14) is divided into several fourth patterned blocks by a fourth combined groove that is set horizontally and inclined. The fourth combined groove includes a fourth multidimensional groove (44) and a fourth groove (64). The interface of the fourth multidimensional groove (44) and the fourth groove (64) is the same width. The right end of the fourth multidimensional groove (44) is connected to the first longitudinal main groove (21). The fourth groove (64) extends from the left end of the fourth multidimensional groove (44) to the left edge of the left shoulder rib (14). The fourth patterned block is also provided with a fourth knife groove (34). The fourth knife groove (34) extends from the left end of the upper fourth groove (64) at a vertical angle of 24-28° to the lower fourth groove (64). The right shoulder rib (15) has a longitudinal secondary groove (25) near the left edge, and is divided into several fifth pattern blocks by a fifth knife groove (35) arranged laterally. The fifth pattern block has a fifth combined groove, which includes a fifth multidimensional groove (45) and a fifth groove (65). The interface of the fifth multidimensional groove (45) and the fifth groove (65) is the same width. The right end of the fifth multidimensional groove (45) passes through the longitudinal secondary groove (25) and is not connected to the fourth longitudinal main groove (24). The fifth groove (65) extends from the right end of the fifth multidimensional groove (45) to the right edge of the right shoulder rib (15). The tread blocks are asymmetrically distributed on the left and right sides of the tread along the circumferential central axis of the tread. The multidimensional groove is provided with a stepped groove bottom of equal width and three-dimensional depth. The stepped groove bottom includes a first groove bottom (01), a second groove bottom (02), and a third groove bottom (03). The depth of the groove bottom from the tread is 2mm, 4mm, and 6mm respectively. The angle between the groove walls on both sides and the longitudinal direction is 1°-2°. The angle between the groove wall between the first groove bottom (01) and the second groove bottom (02) and the longitudinal direction is 1°-2°. The angle between the groove wall between the second groove bottom (02) and the third groove bottom (03) and the longitudinal direction is 2°-3°. The intersection of the groove bottoms is rounded. The rounded corners of the positive corners are R0.4-R0.6, and the rounded corners of the negative corners are R0.1-R0.

3. The first patterned block has two sixth grooves (51) arranged horizontally inside, and both ends of the grooves are connected to the adjacent main groove. The third patterned block has a seventh groove (53) vertically inclined inside. The seventh groove (53) divides the third patterned block into two trapezoids by connecting the third multidimensional groove (43) and the third groove (33). The right trapezoidal patterned block has an eighth groove (63) and a ninth groove (73) horizontally inclined inside. The left trapezoidal patterned block has a tenth groove (83) and an eleventh groove (93) horizontally inclined inside. The tenth groove (83), the eighth groove (63), the eleventh groove (93) and the ninth groove (73) are arranged in parallel with staggered positions in sequence. The fourth patterned block is provided with a 12th groove (74) and a 13th groove (84) arranged horizontally inside. The 12th groove (74) and the 13th groove (84) are located to the right of the fourth groove (34). The right end of the 13th groove (84) is connected to the first longitudinal main groove (21). The right end of the 12th groove (74) is connected to the first longitudinal main groove (21) through a trapezoidal groove (94). The fifth patterned block has two fourteenth grooves (75) arranged horizontally inside. The two fourteenth grooves (75) are located above and below the fifth groove (35) respectively. The left end of the fourteenth groove (75) is connected to the longitudinal secondary groove (25), and the right end is located inside the patterned block.

2. The multi-dimensional deep groove all-season tire according to claim 1, characterized in that, In the first patterned block, the first multidimensional groove (41) and the first cutting groove (31) have the same inclination angle; The first multidimensional groove (41) has a maximum angle of 15-25° with the horizontal, and the groove width is a gradually changing width of 3-4 mm, with the outer end gradually narrowing towards the inner end. The first groove (31) has an angle of 15-25° with the horizontal, a groove width of 0.6-1mm, and a depth of 3-6mm; The sixth groove (51) has an angle of 15-25° with the horizontal, a groove width of 0.6-1mm, and a depth of 3-6mm.

3. The multi-dimensional deep groove all-season tire according to claim 1, characterized in that, In the second patterned block, the second multidimensional groove (42) has an angle of 15-25° with the horizontal and a groove width of 3-4 mm; The second groove (32) has an angle of 40-60° with the horizontal, a groove width of 0.6-1mm, and a depth of 3-6mm; The curved multidimensional groove (52) has a maximum angle of 55-70° with the horizontal, and the groove width is a gradually changing width of 3-4 mm, which gradually narrows from the outer end to the inner end.

4. The multi-dimensional deep groove all-season tire according to claim 1, characterized in that, In the third patterned block, the third multidimensional groove (43) and the third cutting groove (33) have the same inclination angle; the third cutting groove (33) is parallel to the eighth cutting groove (63), the ninth cutting groove (73), the tenth cutting groove (83), and the eleventh cutting groove (93); The third multidimensional groove (43) has a maximum angle of 15-25° with the horizontal, and the groove width is a gradually changing width of 3-4 mm, with the outer end gradually narrowing towards the inner end. The seventh groove (53) has an angle of 50-60° with the horizontal, a groove width of 0.6-1mm, and a depth of 3-6mm; The third groove (33), the eighth groove (63), the ninth groove (73), the tenth groove (83), and the eleventh groove (93) have an angle of 15-25° with the horizontal, a groove width of 0.6-1mm, and a depth of 3-6mm.

5. The multi-dimensional deep groove all-season tire according to claim 1, characterized in that, In the fourth patterned block, the fourth multidimensional groove (44) has an angle of 5°-10° with the horizontal and a groove width of 3.5-5mm; The fourth groove (64) has a maximum angle of 5°-10° with the horizontal, a width of 3.5-5mm, and a depth of 8-8.5mm. The fourth cutter groove (34) has a width of 0.6-1mm and a depth of 2-6mm; The twelfth groove (74) and the thirteenth groove (84) have an angle of 5-10° with the horizontal, a groove width of 0.6-1mm, and a depth of 2-6mm.

6. The multi-dimensional deep groove all-season tire according to claim 1, characterized in that, In the fifth patterned block, the fifth multidimensional groove (45) has an angle of 15-20° with the horizontal, and the groove width is a gradually changing width of 3-4mm, with the outer end gradually narrowing towards the inner end; The fifth groove (65) has an angle of 15-20° with the horizontal, a width of 3-4 mm, and a depth of 8-8.5 mm. The fifth groove (35) and the fourteenth groove (75) have an angle of 15-20° with the horizontal, a groove width of 0.6-1mm, and a depth of 2-6mm.

7. The multi-dimensional deep groove all-season tire according to claim 1, characterized in that, The second cutting groove (32), the sixth cutting groove (51), the twelfth cutting groove (74), and the fourteenth cutting groove (75) are serrated.

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