Tire

Abstract

The utility model belongs to the technical field of tires, and relates to a tire. A plurality of circumferential grooves extending in the circumferential direction of the tread divide the pattern structure into a middle pattern rib, a left pattern rib, a left shoulder pattern rib, a right pattern rib and a right shoulder pattern rib; first transverse grooves and second transverse grooves which are arranged at intervals are circumferentially distributed in the middle pattern ribs, five middle transverse cutter grooves which are parallel to one another and have the same inclination angle are formed between the two first transverse grooves, and the inclination angle of each middle transverse cutter groove ranges from 40 degrees to 70 degrees; the first transverse cutter groove is connected with the first transverse groove, the other end of the first transverse cutter groove extends to the circumferential groove, the second transverse cutter groove is formed between the first transverse groove and the second transverse groove and is not connected with the first transverse groove and the second transverse groove, the two ends of the third transverse cutter groove are communicated with the circumferential groove, the two ends of the fourth transverse cutter groove are closed, and the fifth transverse cutter groove is connected with the first transverse groove. And the other end extends to the circumferential groove. According to the utility model, the compatibility of the rigidity of the tread pattern structure of the tire is optimized, so that the dry land performance and the snowfield performance of the tire are both considered.

Description

Technical Field

[0001] This utility model belongs to the field of tire technology, specifically relating to a tire, and more particularly to an all-season tire tread pattern for pneumatic tires used to balance or take into account performance on dry and snowy surfaces. Background Technology

[0002] In tire usage, due to the emphasis on and requirements for travel safety, people not only pay attention to tire performance on dry surfaces such as grip in sunny weather, but also to tire performance on icy and snowy conditions. Therefore, how to effectively balance dry and snow performance during tire design is a challenge for tire designers.

[0003] During tire design, designers aim to achieve a balanced breakthrough across various performance parameters. However, to achieve certain performance goals, it is often necessary to sacrifice other performance indicators in the early stages of design. There is a trade-off between dry and snow performance in tire tread design.

[0004] Generally, to improve a tire's dry performance, the tread blocks must maintain sufficient rigidity and integrity during the tread pattern design phase. Dry grip requires large, continuous tread blocks to increase the contact patch and thus the coefficient of friction. For snow performance, a single-piece tread pattern is typically used as a base, with multiple cuts in the tread blocks to reduce rigidity and improve traction on snowy surfaces. These cuts are one of the most significant characteristics of a tire with strong snow traction. Snow grip requires a dense sipe and lateral groove design to "bite" into snow, increasing friction. However, this design significantly divides the contact patch, leading to a decrease in dry grip. Therefore, under certain circumstances, improving snow performance may necessitate reducing dry grip.

[0005] Traditionally, when designing tread patterns to balance snow performance, the distance between adjacent tread cuts is maintained at 4-6 mm, and the tread cuts connect with the tire's circumferential grooves, resulting in a dense tread pattern. While this tread pattern effectively improves snow performance, the increased number of cuts reduces tread rigidity, causing tire lag during driving and consequently increasing braking distance on dry roads. Another improvement is the use of a three-dimensional sipe design to achieve the reduced tread rigidity resulting from the denser tread pattern, but this increases manufacturing and design costs. Utility Model Content

[0006] The purpose of this invention is to solve the above-mentioned problems in the prior art and to propose a tire that achieves a balance between dry and snow performance by optimizing the matching of the rigidity of the tire tread pattern structure.

[0007] The technical solution of this utility model is:

[0008] A tire, wherein the tire tread is provided with a tread structure, the tread structure including a plurality of circumferential grooves extending along the circumference of the tread, the circumferential grooves dividing the tread structure into a central tread rib located in the center of the tread and a left tread rib, a left shoulder tread rib, a right tread rib, and a right shoulder tread rib on both sides of it.

[0009] The intermediate tread rib is circumferentially distributed with spaced first and second transverse grooves. Between the two first transverse grooves are five parallel intermediate transverse slits with the same inclination angle. The inclination angle of the intermediate transverse slits relative to the tire circumference is 40° to 70°.

[0010] The intermediate transverse cutting groove includes a first transverse cutting groove, a second transverse cutting groove, a third transverse cutting groove, a fourth transverse cutting groove, and a fifth transverse cutting groove arranged sequentially along the circumference. One end of the first transverse cutting groove is connected to the first transverse groove, and the other end extends into the circumferential groove. The second transverse cutting groove is disposed between the first transverse groove and the second transverse groove but is not connected. Both ends of the third transverse cutting groove are connected to the circumferential groove. Both ends of the fourth transverse cutting groove are closed. One end of the fifth transverse cutting groove is connected to the first transverse groove, and the other end extends into the circumferential groove.

[0011] Furthermore, the circumferential groove includes a first circumferential groove, a second circumferential groove, a third circumferential groove, and a fourth circumferential groove arranged sequentially from left to right.

[0012] The first transverse groove, the second transverse groove and the middle transverse cutter groove have opposite inclination directions;

[0013] The two ends of the first transverse groove are connected to the second circumferential groove and the third circumferential groove, respectively. One end of the second transverse groove is connected to the second circumferential groove, and the other end extends to the third transverse groove but is not connected.

[0014] Furthermore, the distance between the second transverse groove and the first transverse groove is 2-5 mm, and the distance between the second transverse groove and the second transverse groove is 2-5 mm.

[0015] Furthermore, the length of the second transverse groove is 0.75 to 0.95 times the width of the middle pattern rib.

[0016] Furthermore, the distance between the fourth transverse cutting groove and the first transverse groove is 2-5 mm, and the distance between the fourth transverse cutting groove and the circumferential groove is 2-5 mm.

[0017] Furthermore, the length of the fourth transverse groove is 0.8 to 0.95 times the width of the middle pattern rib.

[0018] Furthermore, the height h1 at the junction of the first transverse cutter groove and the first transverse groove satisfies the condition 0.3h2≤h1≤h2 with respect to the height h2 of the first transverse groove.

[0019] The height h3 at the junction of the fifth transverse groove and the first transverse groove satisfies the condition 0.3h2≤h3≤h2 with respect to the height h2 of the first transverse groove.

[0020] Furthermore, the length d5 ​​at the junction of the first transverse cutting groove and the first transverse groove satisfies 2mm≤d5≤0.4d7, and the length d6 at the junction of the fifth transverse cutting groove and the first transverse groove satisfies 2mm≤d6≤0.4d8; where d7 is the length of the first transverse cutting groove and d8 is the length of the fifth transverse cutting groove.

[0021] Furthermore, the right side tread rib is circumferentially distributed with staggered third and fourth lateral grooves, and between the two third lateral grooves are five parallel side lateral sipes with the same inclination angle, the inclination angle of the side lateral sipes relative to the tire circumference is 45° to 60°.

[0022] The beneficial effects of this utility model are:

[0023] The tire tread pattern provided by this utility model optimizes the matching of the circumferential and radial tread rigidity by designing parameters such as the arrangement rules, tilt angle, and distance of the transverse sipes, as well as the connection relationship between the transverse grooves and transverse sipes on the tread ribs and the parameters involved, thereby solving the problem of reduced overall tread rigidity caused by increased tread cut density.

[0024] The tire tread design of this utility model can balance and take into account both dry and snow performance of the tire, while reducing the risks such as increased costs associated with using three-dimensional steel sheets. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the tire tread pattern structure provided by this utility model;

[0026] Figure 2 This is a magnified view of a section of the central patterned ribs;

[0027] Figure 3 This is a magnified view of a section of the patterned rib on the right side;

[0028] Figure 4 It is a magnified view of the middle patterned rib, including the description of the cutting groove;

[0029] Figure 5 It is a magnified view of the middle patterned rib, including the dimensions and arrangement of the cutting groove;

[0030] Figure 6 It is a magnified view of the right-side patterned ribs, including the description of the rib arrangement;

[0031] Figure 7 This is an explanatory diagram of the connection between the first transverse groove, the fifth transverse groove and the first transverse groove;

[0032] Figure 8 This is a design illustration of the groove at the junction of the first transverse groove, the fifth transverse groove and the first transverse groove;

[0033] In the above figures, 11. Left shoulder patterned rib; 12. Left side patterned rib; 13. Middle patterned rib; 14. Right side patterned rib; 15. Right shoulder patterned rib; 21. First transverse groove; 22. Second transverse groove; 31. First transverse cutting groove; 32. Second transverse cutting groove; 33. Third transverse cutting groove; 34. Fourth transverse cutting groove; 35. Fifth transverse cutting groove; 41. First circumferential groove; 42. Second circumferential groove; 43. Third circumferential groove; 44. Fourth circumferential groove; 51. Transverse cutting groove one; 52. Transverse cutting groove two; 53. Transverse cutting groove three; 54. Transverse cutting groove four; 55. Transverse cutting groove five; 61. Third transverse groove; 62. Fourth transverse groove. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] To further understand this utility model, it will be further described in conjunction with the accompanying drawings and embodiments.

[0036] like Figure 1 As shown, this utility model provides a tire with a tread pattern on its tread surface. The tread pattern includes a left shoulder tread rib 11, a left side tread rib 12, a middle tread rib 13, a right side tread rib 14, and a right shoulder tread rib 15. The middle tread rib 13 is located in the center of the tread, and each tread rib is arranged continuously in the circumferential direction. Each adjacent tread rib is separated by a circumferential groove. The circumferential groove includes a first circumferential groove 41, a second circumferential groove 42, a third circumferential groove 43, and a fourth circumferential groove 44 arranged sequentially from left to right.

[0037] like Figure 2As shown, the intermediate patterned rib 13 has first transverse grooves 21 and second transverse grooves 22 distributed on it, and multiple sets of first transverse grooves 21 and second transverse grooves 22 are continuously arranged circumferentially on the intermediate patterned rib 13. The intermediate patterned rib 13 also has multiple sets of intermediate transverse cutting grooves, which are located between two adjacent first transverse grooves 21, including a first transverse cutting groove 31, a second transverse cutting groove 32, a third transverse cutting groove 33, a fourth transverse cutting groove 34, and a fifth transverse cutting groove 35 arranged sequentially circumferentially. The first transverse cutting grooves 31 to the fifth transverse cutting grooves 35 are arranged in a parallel manner on the surface of the intermediate patterned rib 13, and have the same inclination angle.

[0038] As can be seen from the figure, the inclination direction of the first transverse groove 21 and the second transverse groove 22 is opposite to the inclination direction of the intermediate transverse cutting groove (first transverse cutting groove 31 to fifth transverse cutting groove 35).

[0039] like Figure 5 As shown, the angle α formed by the first to fifth transverse sipes 31 and the boundary of the intermediate tread rib 13 in the intermediate transverse sipes, that is, the inclination angle α relative to the tire circumference, satisfies 40°≤α≤70°. α can be any angle value within the range of 40° to 70°, preferably α is 60°.

[0040] In this specific embodiment, the second transverse cutting groove 32 is distributed between the first transverse cutting groove 31 and the third transverse cutting groove 33; wherein, the first transverse cutting groove 31 is connected to the first transverse groove 21 and extends to the second circumferential groove 42; the two ends of the third transverse cutting groove 33 extend and connect to the second circumferential groove 42 and the third circumferential groove 43; the second transverse cutting groove 32 is located between the first transverse groove 21 and the second transverse groove 22, and is not connected to any transverse groove or circumferential groove.

[0041] The fourth transverse groove 34 is distributed between the fifth transverse groove 35 and the third transverse groove 33; wherein, the fifth transverse groove 35 is connected to the first transverse groove 21 and extends to the third circumferential groove 43; the third transverse groove 33 extends to connect the second circumferential groove 42 and the third circumferential groove 43 at both ends; the fourth transverse groove 34 is not connected to the transverse groove and the circumferential groove.

[0042] In one specific embodiment, at least one groove that approximately satisfies the requirements of the second transverse groove 32 is arranged between the first transverse groove 31 and the third transverse groove 33; and at least one groove that approximately satisfies the requirements of the fourth transverse groove 34 is arranged between the fifth transverse groove 35 and the third transverse groove 33.

[0043] In this specific embodiment, the two ends of the first transverse groove 21 extend and connect to the second circumferential groove 42 and the third circumferential groove 43, one end of the second transverse groove 22 is connected to the second circumferential groove 42, and the other end extends to the third transverse groove 33 but is not connected.

[0044] like Figure 4 and Figure 5 As shown, there is a distance d1 between the second transverse groove 32 and the first transverse groove 21, and a distance d2 between the second transverse groove 32 and the second transverse groove 22. The value of distance d1 is in the range of 2mm ≤ d1 ≤ 5mm, and the value of distance d2 is in the range of 2mm ≤ d1 ≤ 5mm. Furthermore, distances d1 and d2 can be any value in the range of 2 to 5mm.

[0045] To ensure that the second transverse groove 32 provides better snow performance, the length L1 of the second transverse groove 32 and the width L of the middle patterned rib 13 satisfy 0.75L≤L1≤0.95L.

[0046] Furthermore, there is a distance d4 between the fourth transverse groove 34 and the first transverse groove 21, and a distance d3 between the fourth transverse groove 34 and the third circumferential groove 43. The value of distance d3 is in the range of 2mm ≤ d3 ≤ 5mm, and the value of distance d4 is in the range of 2mm ≤ d4 ≤ 5mm. Furthermore, distances d3 and d4 can take any value within the range of 2 to 5mm.

[0047] To ensure that the fourth transverse groove 34 provides better snow performance, the length L2 of the fourth transverse groove 34 and the width L of the middle patterned rib 13 should satisfy 0.8L≤L2≤0.95L.

[0048] To ensure that the tires have better dry performance, such as Figure 7 and Figure 8 As shown, the first transverse groove 31 and the fifth transverse groove 35 are tightly connected to the first transverse groove 21. At the junction of the first transverse groove 31, the fifth transverse groove 35 and the first transverse groove 21, there is a groove depth of a certain width that is lower than the overall depth of the groove.

[0049] The height h1 at the junction of the first transverse cutter groove 31 and the first transverse groove 21 and the height h2 of the first transverse groove 21 satisfy 0.3h2≤h1≤h2; the height h3 at the junction of the fifth transverse cutter groove 35 and the first transverse groove 21 and the height h2 of the first transverse groove 21 satisfy 0.3h2≤h3≤h2.

[0050] The length d5 ​​at the junction of the first transverse cutter groove 31 and the first transverse groove 21 satisfies 2mm≤d5≤0.4d7, and the length d6 at the junction of the fifth transverse cutter 35 and the first transverse groove 21 satisfies 2mm≤d6≤0.4d8; where d7 is the length of the first transverse cutter groove and d8 is the length of the fifth transverse cutter groove.

[0051] like Figure 3 As shown, in this embodiment, the right side patterned rib 14 is provided with a third transverse groove 61, a fourth transverse groove 62, a transverse groove one 51, a transverse groove two 52, a transverse groove three 53, a transverse groove four 54 and a transverse groove five 55, and the above transverse grooves and transverse grooves are arranged in a regular circumferential pattern on the right side patterned rib 14.

[0052] like Figure 6 As shown, transverse grooves 51 to 55 are arranged in a parallel manner on the surface of the intermediate patterned rib 13, with the same inclination angle. The angle β formed by the boundaries of transverse grooves 51 to 55 and the right-side patterned rib 14 should satisfy 45° ≤ β ≤ 60°. β can be any angle value within the range of 45° to 60°. Furthermore, β is approximately equal to α.

[0053] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, alterations, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tire provided with a pattern structure on a tread of the tire, characterized in that, The pattern structure comprises a plurality of circumferential grooves extending along the tire tread circumferential direction, which divides the pattern structure into a middle pattern rib located in the center of the tire tread and a left side pattern rib, a left shoulder pattern rib and a right side pattern rib, a right shoulder pattern rib on both sides of the middle pattern rib; The middle pattern rib is circumferentially distributed with a first transverse groove and a second transverse groove arranged at intervals, and five middle transverse sipes parallel to each other and with the same inclination angle are arranged between the two first transverse grooves, and the inclination angle of the middle transverse sipes relative to the tire circumferential direction is 40°-70°; The middle transverse sipe comprises a first transverse sipe, a second transverse sipe, a third transverse sipe, a fourth transverse sipe and a fifth transverse sipe arranged in sequence along the circumferential direction, one end of the first transverse sipe is connected with the first transverse groove, and the other end extends to the circumferential groove, the second transverse sipe is arranged between the first transverse groove and the second transverse groove and is not connected, both ends of the third transverse sipe are communicated with the circumferential groove, both ends of the fourth transverse sipe are closed, one end of the fifth transverse sipe is connected with the first transverse groove, and the other end extends to the circumferential groove.

2. Tyre according to Claim 1, characterized in that, The circumferential groove comprises a first circumferential groove, a second circumferential groove, a third circumferential groove and a fourth circumferential groove arranged in sequence from left to right; The inclination direction of the first transverse groove, the second transverse groove and the middle transverse sipe is opposite; One end of the first transverse groove is communicated with the second circumferential groove and the third circumferential groove respectively, and the other end of the second transverse groove is communicated with the second circumferential groove and extends to the third transverse sipe without being connected.

3. The tire of claim 1, wherein, The distance between the second transverse sipe and the first transverse groove is 2-5mm, and the distance between the second transverse sipe and the second transverse groove is 2-5mm.

4. The tire of claim 1, wherein, The length of the second transverse sipe is 0.75-0.95 times the width of the middle pattern rib.

5. The tire of claim 1, wherein, The distance between the fourth transverse sipe and the first transverse groove is 2-5mm, and the distance between the fourth transverse sipe and the circumferential groove is 2-5mm.

6. The tire of claim 1, wherein, The length of the fourth transverse sipe is 0.8-0.95 times the width of the middle pattern rib.

7. The tire of claim 1, wherein, The height h1 of the joint of the first transverse sipe and the first transverse groove and the height h2 of the first transverse groove satisfy 0.3h2≤h1≤h2; The height h3 of the joint of the fifth transverse sipe and the first transverse groove and the height h2 of the first transverse groove satisfy 0.3h2≤h3≤h2.

8. The tire of claim 1, wherein, The length d5 of the joint of the first transverse sipe and the first transverse groove satisfies 2mm≤d5≤0.4d7, and the length d6 of the joint of the fifth transverse sipe and the first transverse groove satisfies 2mm≤d6≤0.4d8; wherein d7 is the length of the first transverse sipe, and d8 is the length of the fifth transverse sipe.

9. The tire of claim 1, wherein, The right side pattern rib is circumferentially distributed with a third transverse groove and a fourth transverse groove arranged alternately, and five side transverse sipes parallel to each other and with the same inclination angle are arranged between the two third transverse grooves, and the inclination angle of the side transverse sipe relative to the tire circumferential direction is 45°-60°.

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