tire

Abstract

This invention provides a tire with a tread pattern on its tread surface. The tread pattern includes: multiple longitudinal grooves extending circumferentially along the tire's width, spaced apart to divide the tread into two shoulder tread portions and a central tread portion between the two shoulder tread portions; connecting grooves on the shoulder tread portions and the central tread portion, one end of which connects to a longitudinal groove, and the other end extending to the tire shoulder; and connecting grooves on the central tread portion connecting two adjacent longitudinal grooves; and a first sipe on the central tread portion, with both ends connecting to a longitudinal groove and a connecting groove, respectively. This invention effectively solves the problem of low wet handling performance of SUV tires in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of tire technology, and more specifically, to a tire. Background Technology

[0002] Currently, sport utility vehicles (SUVs) are increasingly favored by consumers due to their high space utilization and reinforced suspension systems, combining the comfort of a sedan with the off-road capability of an SUV. Correspondingly, consumer demand for SUV tires is growing, and the performance requirements for SUV tires are gradually increasing, especially their handling performance.

[0003] However, most existing tires for sport utility vehicles use simple tread patterns. While these designs can meet the basic requirements of SUV tires, the simple tread patterns often result in poor water drainage and grip, reducing the tire's anti-slip performance and failing to meet the wet handling performance requirements of SUV tires. Utility Model Content

[0004] The main objective of this invention is to provide a tire that addresses the problem of low wet handling performance of SUV tires in the prior art.

[0005] To achieve the above objectives, this utility model provides a tire with a tread pattern structure on its tread surface. The tread pattern structure includes: longitudinal grooves extending circumferentially along the tire, with multiple longitudinal grooves spaced apart along the width of the tire to divide the tread into two shoulder tread portions and an intermediate tread portion located between the two shoulder tread portions; connecting grooves disposed on the shoulder tread portions and the intermediate tread portion, one end of the connecting groove on the shoulder tread portion communicating with the longitudinal grooves, and the other end of the connecting groove extending to the tire shoulder; and connecting grooves disposed on the intermediate tread portion to connect two adjacent longitudinal grooves; and a first sipe disposed on the intermediate tread portion, with both ends of the first sipe communicating with the longitudinal grooves and the connecting grooves, respectively.

[0006] Furthermore, the end of the first cutting groove that connects to the longitudinal groove is the first connecting end; there are at least two first connecting ends, and in the two longitudinal grooves adjacent to the first cutting groove, each longitudinal groove is connected to at least one first connecting end.

[0007] Furthermore, the first cutting groove includes a main cutting groove and a plurality of supporting cutting grooves connected to the main cutting groove. One end of the main cutting groove is connected to a connecting groove, and the end of each supporting cutting groove away from the main cutting groove is connected to a longitudinal groove.

[0008] Furthermore, the plurality of support grooves include: a first support groove, which communicates with the end of the main groove, and the first support groove and the main groove are arranged at an angle; a second support groove, which communicates with the main groove, and the connection between the second support groove and the main groove is located between the two ends of the main groove; wherein, the end of the first support groove away from the main groove communicates with a longitudinal groove located on one side of the middle patterned portion, and the end of the second support groove away from the main groove communicates with a longitudinal groove located on the other side of the middle patterned portion.

[0009] Furthermore, the multiple intermediate tread portions include a central tread portion and a crown tread portion. At least a portion of the central tread portion coincides with the center surface S of the tire, and the crown tread portion is located between the central tread portion and the shoulder tread portion. Among them, the connecting groove located on the crown tread portion is a first connecting groove. The first connecting groove includes a first sub-connecting groove, a second sub-connecting groove, and a third sub-connecting groove that are interconnected. The second sub-connecting groove is located between the first sub-connecting groove and the third sub-connecting groove. The depth of the first sub-connecting groove and the depth of the third sub-connecting groove are both greater than the depth of the second sub-connecting groove, so as to form a first structural reinforcement portion through the bottom of the second sub-connecting groove.

[0010] Furthermore, the main cutting groove, the first supporting cutting groove, and the connecting groove connected to the main cutting groove form an arrangement area. The pattern structure also includes a second cutting groove, which is set in the arrangement area; wherein, one end of the first cutting groove is connected to the longitudinal groove.

[0011] Furthermore, the connecting groove located on the central tread portion is a second connecting groove, and there are multiple second connecting grooves. The multiple second connecting grooves are spaced apart along the circumference of the tire. The tread structure also includes a third sipe, which is disposed between two adjacent second connecting grooves and connects two adjacent longitudinal grooves.

[0012] Furthermore, the connecting groove located on the tire shoulder tread is a third connecting groove. The third connecting groove includes a fourth sub-connecting groove and a fifth sub-connecting groove that are interconnected. The depth of the fourth sub-connecting groove is greater than the depth of the fifth sub-connecting groove, so that a second structural reinforcement is formed through the bottom of the fifth sub-connecting groove.

[0013] Furthermore, there are multiple third connecting grooves, which are spaced apart along the circumference of the tire. The tread pattern also includes a fourth sipe, which is disposed between two adjacent third connecting grooves. One end of the fourth sipe is connected to the longitudinal groove, and the other end of the fourth sipe extends to the tire shoulder. There are multiple fourth sipes, which are spaced apart along the circumference of the tire.

[0014] Furthermore, along the direction from the center tread pattern to the shoulder tread pattern, the width of the first connecting groove gradually decreases.

[0015] Applying the technical solution of this utility model, the tire tread is provided with a tread structure. The longitudinal grooves of the tread structure extend circumferentially along the tire, and there are multiple longitudinal grooves spaced apart along the width of the tire to divide the tread into two shoulder tread portions and a central tread portion located between the two shoulder tread portions. One end of a connecting groove on the shoulder tread portion connects to the longitudinal groove, and the other end extends to the tire shoulder. The connecting groove on the central tread portion connects two adjacent longitudinal grooves. A first sipe is provided on the central tread portion, and its two ends connect to the longitudinal groove and the connecting groove, respectively. Thus, during vehicle operation, the connecting groove on the central tread portion can drain water between the central tread portion and the driving surface into the longitudinal grooves on both sides of the central tread portion, ensuring the drainage reliability of the central tread portion. The connecting groove on the shoulder tread portion can drain water from the longitudinal grooves to the tire shoulder, forming a drainage network on the tire tread and ensuring the tire's drainage performance. At the same time, the first groove can not only break the water film between the middle tread and the driving surface, increasing the friction between the middle tread and the driving surface and ensuring the tire's grip, but also further improve the tire's drainage performance through the connection with the connecting groove and the longitudinal groove, thereby improving the tire's anti-slip performance and wet handling, thus solving the problem of low wet handling of SUV tires in the existing technology. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 A partial structural schematic diagram of an embodiment of the tire tread structure according to the present invention is shown;

[0018] Figure 2 It shows Figure 1 A cross-sectional view of the first connecting trench in the middle.

[0019] The above figures include the following reference numerals:

[0020] 10. Longitudinal groove; 11. First longitudinal groove; 12. Second longitudinal groove;

[0021] 20. Tire shoulder pattern area;

[0022] 30. Middle pattern section; 31. Central pattern section; 32. Crown pattern section;

[0023] 40. Connecting groove; 41. First connecting groove; 411. First structural reinforcement; 42. Second connecting groove; 43. Third connecting groove; 431. Second structural reinforcement;

[0024] 50. First cutting groove; 51. Main cutting groove; 52. Support cutting groove; 521. First support cutting groove; 522. Second support cutting groove;

[0025] 60. Second tool groove;

[0026] 70. Third tool groove;

[0027] 80. Fourth tool groove. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0030] In this utility model, unless otherwise stated, directional terms such as "upper" and "lower" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" are generally used in relation to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0031] To address the issue of low wet handling performance of SUV tires in the prior art, this application provides a tire.

[0032] like Figure 1 and Figure 2 As shown, the tire tread has a tread pattern, including longitudinal grooves 10, connecting grooves 40 on the shoulder tread portions 20 and the intermediate tread portion 30, and a first sipe 50. The longitudinal grooves 10 extend circumferentially along the tire, and there are multiple longitudinal grooves 10 spaced apart along the width of the tire to divide the tread into two shoulder tread portions 20 and an intermediate tread portion 30 located between the two shoulder tread portions 20. One end of the connecting groove 40 on the shoulder tread portion 20 communicates with the longitudinal grooves 10, and the other end extends to the tire shoulder. The connecting groove 40 on the intermediate tread portion 30 connects two adjacent longitudinal grooves 10. The first sipe 50 is provided on the intermediate tread portion 30, and both ends of the first sipe 50 communicate with the longitudinal grooves 10 and the connecting grooves 40, respectively.

[0033] Using the technical solution of this embodiment, a tread pattern is provided on the tire tread. The longitudinal grooves 10 of the tread pattern extend circumferentially along the tire. There are multiple longitudinal grooves 10, spaced apart along the width of the tire, to divide the tread into two shoulder tread portions 20 and an intermediate tread portion 30 located between the two shoulder tread portions 20. One end of a connecting groove 40 provided on the shoulder tread portion 20 communicates with the longitudinal grooves 10, and the other end of the connecting groove 40 extends to the tire shoulder. The connecting groove 40 provided on the intermediate tread portion 30 connects two adjacent longitudinal grooves 10. A first sipe 50 is provided on the intermediate tread portion 30, and both ends of the first sipe 50 communicate with the longitudinal grooves 10 and the connecting groove 40, respectively. In this way, during vehicle operation, the connecting grooves 40 on the central tread portion 30 can drain water between the central tread portion 30 and the driving surface into the longitudinal grooves 10 on both sides of the central tread portion 30, ensuring the reliability of drainage of the central tread portion 30. The connecting grooves 40 on the tire shoulder tread portion 20 can drain water from the longitudinal grooves 10 to the tire shoulder, forming a drainage network on the tire tread and ensuring the tire's drainage performance. At the same time, the first sipe 50 not only breaks the water film between the central tread portion 30 and the driving surface, increasing the friction between the central tread portion 30 and the driving surface and ensuring the tire's grip, but also further improves the tire's drainage performance through its connection with the connecting grooves 40 and the longitudinal grooves 10, thereby improving the tire's anti-slip performance and wet handling, thus solving the problem of low wet handling of SUV tires in the prior art.

[0034] like Figure 1 As shown, the end of the first sipe 50 that connects to the longitudinal groove 10 is the first connecting end. There are at least two first connecting ends; in two longitudinal grooves 10 adjacent to the first sipe 50, each longitudinal groove 10 is connected to at least one first connecting end. This arrangement allows the first sipe 50 to connect with two adjacent longitudinal grooves 10 through multiple first connecting ends, increasing the connection area between the first sipe 50 and the longitudinal grooves 10, improving the drainage performance of the intermediate tread portion 30, and thus improving the tire's drainage performance and anti-skid properties.

[0035] like Figure 1As shown, the first sipe 50 includes a main sipe 51 and multiple branch sipes 52 connected to the main sipe 51. One end of the main sipe 51 is connected to the connecting groove 40, and the ends of each branch sipe 52 away from the main sipe 51 are connected to the longitudinal grooves 10. Thus, the first sipe 50 achieves connection with the connecting groove 40 through the main sipe 51 and with two adjacent longitudinal grooves 10 through the multiple branch sipes 52. The main sipe 51, the multiple branch sipes 52, the connecting groove 40, and the two adjacent longitudinal grooves 10 together form a more complex and efficient water channel network, further improving the drainage performance of the intermediate tread portion 30, thereby improving the tire's drainage performance. Simultaneously, the arrangement of the first sipe 50 also balances the rigidity of the intermediate tread portion 30, increasing the friction between the intermediate tread portion 30 and the driving surface, improving tire grip, and thus enhancing the tire's handling performance in both dry and wet conditions.

[0036] like Figure 1 As shown, the plurality of support grooves 52 include a first support groove 521 and a second support groove 522. The first support groove 521 communicates with the end of the main groove 51, and the first support groove 521 and the main groove 51 are arranged at an included angle. The second support groove 522 communicates with the main groove 51, and the communication point between the second support groove 522 and the main groove 51 is located between the two ends of the main groove 51. Specifically, the end of the first support groove 521 away from the main groove 51 communicates with a longitudinal groove 10 located on one side of the intermediate patterned portion 30, and the end of the second support groove 522 away from the main groove 51 communicates with a longitudinal groove 10 located on the other side of the intermediate patterned portion 30. In this way, the arrangement of the first sipe 521 and the second sipe 522 achieves two objectives: firstly, to drain water from the main sipe 51 into the longitudinal groove 10, thereby improving the drainage performance of the intermediate tread portion 30 and enhancing the tire's anti-slip performance; secondly, to balance the rigidity of the intermediate tread portion 30 from multiple directions, allowing the intermediate tread portion 30 to increase the friction with the driving surface from multiple directions, further enhancing the grip of the intermediate tread portion 30 and improving the tire's handling in both dry and wet conditions.

[0037] In this embodiment, two second cutter grooves 522 are provided, and the two second cutter grooves 522 are spaced apart along the extension direction of the main cutter groove 51 to further improve the handling of the tire.

[0038] like Figure 1 and Figure 2As shown, the plurality of intermediate tread portions 30 include a central tread portion 31 and a crown tread portion 32. At least a portion of the central tread portion 31 coincides with the center surface S of the tire, and the crown tread portion 32 is located between the central tread portion 31 and the shoulder tread portion 20. Among them, the connecting groove 40 located on the crown tread portion 32 is a first connecting groove 41. The first connecting groove 41 includes a first sub-connecting groove, a second sub-connecting groove, and a third sub-connecting groove that are interconnected. The second sub-connecting groove is located between the first sub-connecting groove and the third sub-connecting groove. The depth of the first sub-connecting groove and the depth of the third sub-connecting groove are both greater than the depth of the second sub-connecting groove, so that a first structural reinforcement portion 411 is formed through the bottom of the second sub-connecting groove. In this way, the first connecting groove 41, through the first sub-connecting groove, the second sub-connecting groove, and the third sub-connecting groove, can drain water between the tread pattern 32 and the driving surface into the two longitudinal grooves 10 located on both sides of the tread pattern 32, ensuring the drainage performance of the tread pattern 32 and further improving the tire's drainage performance. Simultaneously, the arrangement of the first structural reinforcement 411, while ensuring the drainage reliability of the first connecting groove 41, also strengthens the structural rigidity of the tread pattern 32, ensuring the handling stability of the tread pattern 32, and thus ensuring the tire's handling stability. Furthermore, the first structural reinforcement 411 can also prevent sound waves from resonating within the first connecting groove 41, reducing tire noise and improving tire ride comfort.

[0039] In this embodiment, there are multiple first connecting grooves 41, which are spaced apart along the circumference of the tire to improve the tire's drainage performance.

[0040] Specifically, the first cutting groove 50 is disposed between two adjacent first connecting grooves 41.

[0041] In this embodiment, the plurality of longitudinal grooves 10 include a first longitudinal groove 11 and a second longitudinal groove 12. The first longitudinal groove 11 is located between the shoulder tread portion 20 and the crown tread portion 32, and the second longitudinal groove 12 is located between the crown tread portion 32 and the center tread portion 31.

[0042] Specifically, the widths W1 of the first longitudinal groove 11, W2 of the second longitudinal groove 12, W3 of the shoulder tread portion 20, W4 of the crown tread portion 32, and W5 of the center tread portion 31 satisfy the following ratio: W1:W2:W3:W4:W5=21±1:5±0.5:12±0.5:6±0.5:11±0.5. This arrangement makes the widths of the longitudinal grooves 10 and each tread portion more suitable, which is beneficial for improving the tire's water drainage performance, improving tire rigidity, thereby enhancing the tire's anti-slip performance and handling performance, and improving driving comfort.

[0043] In this embodiment, the tread structure also includes five pitch tread units arranged along the circumference of the tire. With the optimal unit pitch combination, the resonance of the tread is reduced, the tire driving noise is reduced, and the driving comfort of the tire is improved.

[0044] like Figure 1 As shown, the main sipe 51, the first branch sipe 521, and the connecting groove 40 connected to the main sipe 51 form an arrangement area. The tread structure also includes a second sipe 60. The second sipe 60 is disposed within the arrangement area. One end of the first sipe 50 is connected to the longitudinal groove 10. This arrangement of the second sipe 60 balances the rigidity of the tread blocks within the arrangement area, further balancing the rigidity of the tread pattern 32 and improving tire handling performance. Simultaneously, the second sipe 60 can break through the water film between the arrangement area and the driving surface, increasing the friction between the arrangement area and the driving surface, further improving the anti-wet skid performance of the tread pattern 32 and enhancing the tire's wet handling.

[0045] In this embodiment, there is a preset distance between the first cutting groove 50 and the main cutting groove 51.

[0046] like Figure 1 As shown, the connecting groove 40 located on the central tread portion 31 is a second connecting groove 42. There are multiple second connecting grooves 42, spaced apart along the circumference of the tire. The tread structure also includes a third sipe 70. The third sipe 70 is positioned between two adjacent second connecting grooves 42, connecting two adjacent longitudinal grooves 10. In this way, the second connecting grooves 42 can drain water between the central tread portion 31 and the road surface into the two longitudinal grooves 10 located on both sides of the central tread portion 31, ensuring the drainage performance of the central tread portion 31 and further improving the tire's drainage performance. Simultaneously, the arrangement of the third sipe 70 not only balances the rigidity of the central tread portion 31 and improves its grip, but also breaks the water film between the central tread portion 31 and the road surface, increasing the friction between them, thereby improving the tire's handling in both dry and wet conditions.

[0047] In this embodiment, multiple third grooves 70 are provided, and the multiple third grooves 70 are arranged at intervals along the circumference of the tire to further balance the rigidity of the central tread portion 31 and improve the tire's handling.

[0048] like Figure 1As shown, the connecting groove 40 located on the shoulder tread portion 20 is the third connecting groove 43. The third connecting groove 43 includes a fourth sub-connecting groove and a fifth sub-connecting groove that are interconnected. The depth of the fourth sub-connecting groove is greater than the depth of the fifth sub-connecting groove, so that a second structural reinforcement portion 431 is formed through the bottom of the fifth sub-connecting groove. In this way, the arrangement of the second structural reinforcement portion 431 ensures that the third connecting groove 43 drains water from the longitudinal groove 10 to the outside of the tire shoulder, improving the tire's water drainage performance and wet handling. On the other hand, it ensures the structural rigidity of the shoulder tread portion 20, improving the tire's grip and ensuring the tire's handling stability and responsiveness during cornering. At the same time, the above arrangement can also prevent sound waves from resonating in the third connecting groove 43, reducing tire driving noise and improving tire driving comfort.

[0049] like Figure 1 As shown, there are multiple third connecting grooves 43, which are spaced apart along the circumference of the tire. The tread structure also includes a fourth sipe 80. The fourth sipe 80 is positioned between two adjacent third connecting grooves 43, with one end connected to the longitudinal groove 10 and the other end extending to the tire shoulder. This arrangement of multiple third connecting grooves 43 improves the water drainage performance of the tire shoulder tread portion 20, enhancing the overall water drainage effect of the tire. Simultaneously, the arrangement of the fourth sipe 80 not only balances the rigidity of the tire shoulder tread portion 20, improving its grip, but also breaks the water film between the tire shoulder tread portion 20 and the road surface, increasing the friction between them and thus improving the tire's handling in both dry and wet conditions.

[0050] like Figure 1 As shown, the width of the first connecting groove 41 gradually decreases along the direction from the center tread portion 31 to the shoulder tread portion 20. This arrangement ensures that water from the tread portion 32 is drained into the longitudinal grooves 10 on both sides, guaranteeing the reliability of water drainage from the tread portion 32. Simultaneously, it maintains the rigidity of the tread portion 32, ensuring its handling stability and thus improving the tire's handling performance in both dry and wet conditions.

[0051] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0052] The tire tread features a tread pattern with longitudinal grooves extending circumferentially. Multiple longitudinal grooves are spaced apart along the tire's width, dividing the tread into two shoulder tread sections and a central tread section between them. A connecting groove on the shoulder tread section connects at one end to a longitudinal groove, and the other end extends to the tire shoulder. A connecting groove on the central tread section connects two adjacent longitudinal grooves. A first sipe is located on the central tread section, with both ends connecting to the longitudinal grooves and the connecting groove. During vehicle operation, the connecting groove on the central tread section drains water between the central tread section and the road surface into the longitudinal grooves on either side, ensuring reliable drainage in the central tread section. The connecting groove on the shoulder tread section drains water from the longitudinal grooves to the tire shoulder, creating a drainage network on the tire tread and ensuring excellent water drainage performance. At the same time, the first groove can not only break the water film between the middle tread and the driving surface, increasing the friction between the middle tread and the driving surface and ensuring the tire's grip, but also further improve the tire's drainage performance through the connection with the connecting groove and the longitudinal groove, thereby improving the tire's anti-slip performance and wet handling, thus solving the problem of low wet handling of SUV tires in the existing technology.

[0053] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0054] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0055] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tire, characterized in that, The tire tread has a tread pattern, the tread pattern including: Longitudinal grooves (10) extend along the circumference of the tire. There are multiple longitudinal grooves (10), and the multiple longitudinal grooves (10) are spaced apart along the width direction of the tire to divide the tread into two shoulder tread portions (20) and an intermediate tread portion (30) located between the two shoulder tread portions (20). A connecting groove (40) is provided on the shoulder tread portion (20) and the intermediate tread portion (30). One end of the connecting groove (40) on the shoulder tread portion (20) is connected to the longitudinal groove (10), and the other end of the connecting groove (40) extends to the shoulder of the tire. The connecting groove (40) on the intermediate tread portion (30) is used to connect two adjacent longitudinal grooves (10). A first cutting groove (50) is provided on the middle patterned part (30), and the two ends of the first cutting groove (50) are respectively connected to the longitudinal groove (10) and the connecting groove (40).

2. The tire according to claim 1, characterized in that, The end of the first cutting groove (50) that connects to the longitudinal groove (10) is the first connecting end; There are at least two first connecting ends. In the two longitudinal grooves (10) adjacent to the first cutting groove (50), each longitudinal groove (10) is connected to at least one of the first connecting ends.

3. The tire according to claim 2, characterized in that, The first cutting groove (50) includes a main cutting groove (51) and a plurality of supporting cutting grooves (52) communicating with the main cutting groove (51). One end of the main cutting groove (51) is connected to the communicating groove (40), and the end of each supporting cutting groove (52) away from the main cutting groove (51) is connected to the longitudinal groove (10).

4. The tire according to claim 3, characterized in that, The plurality of said support grooves (52) include: The first cutting groove (521) is connected to the end of the main cutting groove (51), and the first cutting groove (521) and the main cutting groove (51) are arranged at an angle. The second cutting groove (522) is connected to the main cutting groove (51), and the connection between the second cutting groove (522) and the main cutting groove (51) is located between the two ends of the main cutting groove (51). The first cutting groove (521) is connected to a longitudinal groove (10) on one side of the middle patterned part (30) at one end away from the main cutting groove (51), and the second cutting groove (522) is connected to a longitudinal groove (10) on the other side of the middle patterned part (30) at one end away from the main cutting groove (51).

5. The tire according to claim 4, characterized in that, The plurality of intermediate tread portions (30) include a central tread portion (31) and a crown tread portion (32), at least a portion of the central tread portion (31) coincides with the center surface S of the tire, and the crown tread portion (32) is located between the central tread portion (31) and the shoulder tread portion (20); Among them, the connecting groove (40) located on the tread pattern portion (32) is the first connecting groove (41). The first connecting groove (41) includes a first sub-connecting groove, a second sub-connecting groove and a third sub-connecting groove that are interconnected. The second sub-connecting groove is located between the first sub-connecting groove and the third sub-connecting groove. The depth of the first sub-connecting groove and the depth of the third sub-connecting groove are both greater than the depth of the second sub-connecting groove, so as to form a first structural reinforcement portion (411) through the bottom of the second sub-connecting groove.

6. The tire according to claim 5, characterized in that, The main cutting groove (51), the first supporting cutting groove (521), and the connecting groove (40) connected to the main cutting groove (51) form an arrangement area around each other, and the pattern structure further includes: A second cutting groove (60) is provided within the arrangement area; One end of the first cutting groove (50) is connected to the longitudinal groove (10).

7. The tire according to claim 5, characterized in that, The connecting groove (40) located on the central tread portion (31) is a second connecting groove (42), and there are multiple second connecting grooves (42). The multiple second connecting grooves (42) are arranged at intervals along the circumference of the tire. The tread structure also includes: The third cutting groove (70) is disposed between two adjacent second connecting grooves (42), and the third cutting groove (70) connects two adjacent longitudinal grooves (10).

8. The tire according to claim 1, characterized in that, The connecting groove (40) located on the shoulder tread portion (20) is the third connecting groove (43). The third connecting groove (43) includes a fourth sub-connecting groove and a fifth sub-connecting groove that are interconnected. The depth of the fourth sub-connecting groove is greater than the depth of the fifth sub-connecting groove, so that a second structural reinforcement portion (431) is formed through the bottom of the fifth sub-connecting groove.

9. The tire according to claim 8, characterized in that, The third connecting groove (43) is multiple, and the multiple third connecting grooves (43) are spaced apart along the circumference of the tire. The tread structure also includes: The fourth cutting groove (80) is provided between two adjacent third connecting grooves (43), one end of the fourth cutting groove (80) is connected to the longitudinal groove (10), and the other end of the fourth cutting groove (80) extends to the tire shoulder; There are multiple fourth cutter grooves (80), and the multiple fourth cutter grooves (80) are arranged at intervals along the circumference of the tire.

10. The tire according to claim 5, characterized in that, Along the direction from the center tread portion (31) to the shoulder tread portion (20), the width of the first connecting groove (41) gradually decreases.

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