Winter tire

Abstract

The utility model provides a winter tire, which belongs to the technical field of tires, the tread pattern structure of the tire comprises a plurality of groups of guide grooves symmetrically arranged along the center line of the tread and a plurality of V-shaped pattern blocks divided by the guide grooves, the edge of one side of each guide groove is of an arc structure, and the edge of the other side of each guide groove is of a sawtooth structure. And the width of the guide groove is gradually widened from the center line of the tread to the edge of the tire shoulder. The winter tire disclosed by the utility model belongs to an Alpine type winter tire, has extremely strong ice and snow road holding force, excellent wet land performance and snowfield traction performance and control performance, and can provide better winter driving and riding experience.

Description

Technical Field

[0001] The utility model belongs to the technical field of tires, and in particular relates to an Alpine type winter tire. Background Art

[0002] Tires significantly impact vehicle comfort and safety. Different road conditions and environments dictate different tire performance requirements. Winter, with its frequent rain, snow, and slippery, icy roads, places even higher demands on tire grip and handling. Winter tires are specifically designed for the unique driving conditions of winter, ensuring safety on icy and snowy roads and maximizing vehicle performance.

[0003] Chinese utility model patent CN216733775U discloses a tire whose tread is provided with a plurality of circumferentially distributed transverse grooves. The transverse grooves include two connected groove bodies, which are arranged at an angle. The angle between the two groove bodies and the rolling direction of the tire increases in a step-wise or continuously manner in the direction away from the connection between the two groove bodies. This tire can effectively improve grip, but it does not take into account the tire's handling stability and snow traction performance. Therefore, the utility model provides a winter tire to improve the tire's grip, wet performance, and handling performance in severe cold and snowy conditions, providing a better winter driving experience. Utility Model Content

[0004] The details of one or more embodiments of the present invention are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent.

[0005] The utility model proposes a winter tire that solves the technical problem of insufficient consideration of handling stability and snow traction performance in existing winter tires. It is an Alpine type winter tire with extremely strong ice and snow grip, excellent wet performance, snow traction performance and handling performance, and can provide a better winter driving experience.

[0006] The present invention discloses a winter tire with a tread pattern structure comprising multiple sets of guide grooves symmetrically arranged along the tread centerline and a plurality of V-shaped pattern blocks formed by the guide grooves. The guide grooves have an arc-shaped edge on one side and a serrated edge on the other side, and the width of the guide grooves gradually widens from the tread centerline to the shoulder edge. The serrated edge structure of the guide grooves in the present invention increases the tire's tread's grip on the ground, and the gradual groove structure improves the tire's ability to clear snow and mud, enabling the tire to quickly recover traction in harsh snow and mud conditions, thereby enhancing the tire's snow traction performance.

[0007] In some embodiments, the included angle between each set of guide grooves is 58°-62°.

[0008] In some embodiments, within the tire tread width TAW, the ratio of the total area of ​​the V-shaped tread blocks to the tire tread width is (72%-75%): 1. The effective contact area of ​​the tread pattern can improve the stability and safety of the tire on icy and snowy roads.

[0009] In some embodiments, a plurality of inclined longitudinal grooves are sequentially arranged between adjacent guide grooves on the same side of the tread centerline, and the longitudinal grooves and adjacent guide grooves divide the V-shaped pattern block into a plurality of pattern blocks of different areas.

[0010] In some embodiments, reinforcing ribs are provided in the longitudinal grooves, and the depth of the reinforcing ribs accounts for 50% to 60% of the depth of the guide grooves. This structural arrangement can suppress tread block deformation, improve tread block rigidity, and ensure excellent handling performance of the tire.

[0011] In some embodiments, the longitudinal groove includes a first fold line groove, a second fold line groove and an arc groove, wherein the fold line angles of the first fold line groove and the second fold line groove are both 145°-150°, and the angle between the two end points of the arc groove and the center line is 28°-30°.

[0012] In some embodiments, the tread blocks are irregular polygons, and each block is provided with a plurality of wavy sipes. The sharp polygonal structure can provide the tire with excellent grip on ice and snow.

[0013] In some embodiments, the pattern blocks include a first pattern block, a second pattern block, a third pattern block and a fourth pattern block, and an area ratio of the first pattern block, the second pattern block, the third pattern block and the fourth pattern block is 1:(0.8-0.9):(0.5-0.6):(0.4-0.5).

[0014] In some embodiments, a first sipe is provided on the first tread block, a second sipe is provided on the second tread block, a third sipe is provided on the third tread block, and a fourth sipe is provided on the fourth tread block, wherein the angle between the first sipe and the centerline of the tread is 69°-71°, and the angles between the second sipe, the third sipe, and the fourth sipe and the centerline of the tread are all 88°-90°.

[0015] In some embodiments, the number of second sipes is odd, and a bottom through-hole is provided below the middle second sipe. The depth of the bottom through-hole is the same as the depth of the guide groove. Providing the bottom through-hole below the wavy sipes allows for excellent wet performance in the tire. When the wavy sipes above the bottom through-holes are worn away, the bottom through-holes become visible, compensating for the reduced wet performance caused by the shallower groove depth, resulting in superior wet grip for the tire.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] (1) The tread pattern structure of the winter tire of the present invention can increase the bite force of the tread on the ground by providing multiple guide grooves with gradually varying widths and serrated edges, thereby improving the tire's ability to clean snow and mud, enabling the tire to quickly restore traction under severe snow and mud road conditions, thereby improving the tire's snow traction performance; the multiple V-shaped pattern blocks divided by the guide grooves are in effective contact with the ground, which can improve the stability and safety of the tire when driving on icy and snowy roads.

[0018] (2) The tread pattern structure of the winter tire of the present invention can suppress the deformation of the pattern blocks, improve the rigidity of the pattern blocks, and ensure the excellent handling performance of the tire by providing multiple inclined longitudinal grooves and reinforcing ribs in the longitudinal grooves.

[0019] (3) The tread pattern structure of the winter tire of the present invention is composed of irregular polygonal blocks with sharp edges and corners divided by grooves, which can provide the tire with excellent ice and snow grip; dense wave-shaped sipes are arranged on the tread blocks, so that the tire has excellent wet grip. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. Among them:

[0021] Figure 1 A schematic structural diagram of a winter tire provided by an embodiment of the present utility model;

[0022] Figure 2 for Figure 1 Cross-sectional view of the tread groove at A-A';

[0023] In the accompanying drawings: 1, guide groove, 2, first pattern block, 3, second pattern block, 31, second sipe, 32, first bottom through hole, 4, third pattern block, 5, fourth pattern block, 6, first fold line groove, 61, first reinforcing rib, 7, second fold line groove, 71, second reinforcing rib, 8, arc groove, 81, third reinforcing rib;

[0024] TAW: tire tread width;

[0025] CL: tread centerline. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "transverse", "longitudinal", "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", and "third" may explicitly or implicitly include one or more of such features. The term "longitudinal" refers to the direction in which the tire rolls; the term "transverse" refers to the direction perpendicular to the mid-plane of the tire.

[0028] An embodiment of the utility model provides a winter tire with a symmetrical tread pattern design. Figure 1 Schematic diagram of the structure of the tread pattern of a winter tire according to an embodiment of the present invention. Figure 1 As shown, the tread pattern structure of this winter tire includes multiple sets of guide grooves 1 symmetrically arranged along the tread centerline, and a plurality of V-shaped blocks formed by the guide grooves 1. The V-shaped blocks are mirror-symmetrical along the tire centerline, and the V-shaped blocks occupy 72%-75% of the tire's running surface width (TAW). This effective contact patch improves the tire's stability and safety on icy and snowy roads. The guide grooves 1 have a smooth arc-shaped edge on one side and a serrated edge on the other. The width of the guide grooves 1 gradually widens from the tread centerline to the shoulder edge. The serrated edge structure of the guide grooves 1 increases the tire's grip on the ground, and the gradual groove structure improves the tire's ability to clear snow and mud, enabling the tire to quickly recover traction in harsh snow and mud conditions, thereby enhancing its snow traction performance. In a preferred embodiment, the angle between each set of guide grooves 1 is 58°-62°.

[0029] The winter tire of this embodiment of the utility model has multiple inclined longitudinal grooves spaced sequentially between adjacent guide grooves 1 on the same side of the tread centerline. Reinforcement ribs are provided in the longitudinal grooves, and the depth of the reinforcement ribs is half the depth of the guide grooves. The longitudinal grooves include a first fold-line groove 6, a second fold-line groove 7, and an arc-line groove 8. The width ratio of the first fold-line groove 6, the second fold-line groove 7, and the arc-line groove 8 is 1:(0.85-0.9):(0.65-0.7). The fold angles of the first fold-line groove 6 and the second fold-line groove 7 are both 145°-150°, and the angle between the two endpoints of the arc-line groove 8 and the centerline is 28°-30°. The first fold line groove 6 is provided with a first reinforcing rib 61, the depth of which is half that of the guide groove 1. The second fold line groove 7 is provided with a second reinforcing rib 71, the depth of which is half that of the guide groove 1. The arc groove 8 is provided with a third reinforcing rib 81, the depth of which is half that of the guide groove. The width ratio of the first reinforcing rib 61, the second reinforcing rib 71, and the third reinforcing rib 81 is 1:(0.85-0.9):(0.65-0.7). The provision of the reinforcing ribs can suppress tread block deformation, improve block rigidity, and ensure the tire's excellent handling performance.

[0030] The longitudinal grooves and adjacent guide grooves of the winter tire of this embodiment divide the V-shaped tread blocks into multiple blocks of varying areas. The blocks are polygonal with sharp edges, providing the tire with excellent grip on ice and snow. Each block is provided with multiple wavy sipes to enhance the tire's wet grip. The tread blocks include a first block 2, a second block 3, a third block 4, and a fourth block 5. The area ratio of the first block 2, the second block 3, the third block 4, and the fourth block 5 is 1:(0.8-0.9):(0.5-0.6):(0.4-0.5). The first pattern block 2 is provided with a plurality of first sipes with a wavy structure, and the angle between the first sipes and the center line of the tread is 69°-71°; the second pattern block 3 is provided with a plurality of second sipes with a wavy structure, and the angle between the second sipes 31 and the center line of the tread is 88°-90°; the third pattern block 4 is provided with a plurality of third sipes with a wavy structure, and the angle between the third sipes and the center line of the tread is 88°-90°; the fourth pattern block 5 is provided with a plurality of fourth sipes with a wavy structure, and the angle between the fourth sipes and the center line of the tread is 88°-90°. The number of second sipes 31 is an odd number, and a first bottom through-hole 32 is provided below the middle second sipe 31. The depth of the first bottom through-hole 32 is the same as that of the guide groove, and the diameter of the first bottom through-hole 32 is 3-5 mm. The number of third sipes is also an odd number, and a second bottom through-hole with the same structure as the first bottom through-hole is provided below the middle third sipe. The depth of the second bottom through-hole is the same as that of the guide groove, and the diameter of the second bottom through-hole is 3-5 mm. The number of fourth sipes is also an odd number, and a third bottom through-hole is provided below the middle fourth sipe. The depth of the third bottom through-hole is the same as that of the guide groove, and the diameter of the third bottom through-hole is 3-5 mm. Providing a bottom through-hole below the middle of an odd number of wave sipes can enhance the tire's wet performance. When the wave sipe above the bottom through-hole wears out, the bottom through-hole becomes visible, compensating for the reduced wet performance caused by the shallower groove depth, resulting in excellent wet grip.

[0031] The above embodiments are only used to illustrate the technical solution of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention. They should all be included in the scope of the technical solution for which protection is requested in the present invention.

Claims

1. A winter tire, characterized by: The tread pattern structure of the tire includes multiple groups of guide grooves symmetrically arranged along the center line of the tread and multiple V-shaped blocks divided by the guide grooves. One edge of the guide groove is an arc structure, and the other edge is a serrated structure. The width of the guide groove gradually widens from the center line of the tread to the shoulder edge.

2. The winter tire according to claim 1, characterized in that: The included angle between each set of guide grooves is 58°-62°.

3. The winter tire according to claim 1, characterized in that: Within the tire tread width TAW area, the ratio of the total area of ​​the V-shaped pattern blocks to the tire tread width area is (72%-75%):

1.

4. The winter tire according to claim 1, characterized in that: A plurality of inclined longitudinal grooves are sequentially arranged between adjacent guide grooves on the same side of the tread centerline, and the longitudinal grooves and the adjacent guide grooves divide the V-shaped pattern block into a plurality of pattern blocks of different areas.

5. The winter tire according to claim 4, characterized in that: Reinforcement ribs are set in the longitudinal grooves, and the depth of the reinforcement ribs accounts for 50%~60% of the depth of the guide grooves.

6. The winter tire according to claim 4 or 5, characterized in that: The longitudinal grooves include a first fold line groove, a second fold line groove and an arc groove, wherein the fold line angles of the first fold line groove and the second fold line groove are both 145°-150°, and the angle between the two end points of the arc groove and the center line is 28°-30°.

7. The winter tire according to claim 4, characterized in that: The pattern blocks are polygonal, and each pattern block is provided with a plurality of wave-shaped sipes.

8. The winter tire according to claim 7, characterized in that: The pattern blocks include a first pattern block, a second pattern block, a third pattern block and a fourth pattern block, and an area ratio of the first pattern block, the second pattern block, the third pattern block and the fourth pattern block is 1: (0.8~0.9): (0.5~0.6): (0.4~0.5).

9. The winter tire according to claim 8, characterized in that: A first sipe is provided on the first pattern block, a second sipe is provided on the second pattern block, a third sipe is provided on the third pattern block, and a fourth sipe is provided on the fourth pattern block, wherein the angle between the first sipe and the center line of the tread is 69°-71°, and the angles between the second sipe, the third sipe, and the fourth sipe and the center line of the tread are all 88°-90°.

10. The winter tire according to claim 9, characterized in that: The number of the second knife grooves is an odd number, and a bottom through hole is provided below the second knife groove located in the middle, and the depth of the bottom through hole is the same as the depth of the guide groove.

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