Tread structure and tire

Abstract

The invention relates to the technical field of tires, in particular to a tread structure and a tire. The outer side tire shoulder rib of the tread structure can enhance the control stability of the tire, the inner side tire shoulder rib can improve the drainage performance, the middle rib can keep proper rigidity, and large deformation generated when the tire makes contact with the ground is reduced, so that the whole tread structure has the stable control performance and braking performance, the mute performance and the comfort performance are guaranteed, and the service life of the tire is prolonged. According to the invention, the tread structure performance is optimized and balanced, the dry and wet land gripping and controllability of the tire and lower driving noise are ensured, the riding comfort performance of the tire can be maintained to the greatest extent, and lower rolling resistance is maintained at the same time.

Description

Technical Field

[0001] This invention relates to the field of tire technology, and more particularly to a tread structure and a tire. Background Technology

[0002] Depending on the usage requirements, passenger car tire tread patterns are divided into large and small tread patterns, symmetrical patterns, asymmetrical patterns, and directional patterns. Small tread patterns are beneficial to tire noise and ride comfort, but are not conducive to tire handling performance in dry and wet conditions. Large tread patterns, on the other hand, are beneficial to tire handling stability, but are not conducive to noise and comfort.

[0003] In related technologies, multiple grooves are set along the circumference of the tire tread. In order to reduce the car from slipping on wet roads, the grooves need to be designed with a wide opening size to drain rainwater. However, the surface rigidity of the tire will be significantly reduced, and the tire is prone to large deformation when it contacts the ground. The tire's handling is greatly reduced. In addition, the tire noise is high, and it is difficult to balance the tire's drainage performance, noise reduction performance and handling performance. Summary of the Invention

[0004] The purpose of this invention is to provide a tread structure and tire that can simultaneously take into account the tire's water drainage performance, noise reduction performance and handling performance.

[0005] According to one aspect of the present invention, a tread structure is provided, the tread structure including a tire surface, wherein two first main grooves are provided on the tire surface, the first main grooves extending circumferentially along the tire surface, the two first main grooves being spaced apart axially along the tire surface, the two first main grooves dividing the tire surface from the inside to the outside sequentially to form an inner shoulder rib, a middle rib, and an outer shoulder rib, wherein:

[0006] The central rib is provided with a second main groove, which extends circumferentially along the tire surface to divide the central rib into multiple sub-ribs. Each sub-rib is provided with multiple central sipes, which are spaced apart in the circumferential direction of the tire surface. The shapes of the central sipes on the multiple sub-ribs are different and asymmetrical. The central sipes are connected to the first main groove and / or the second main groove.

[0007] The outer shoulder rib is provided with a plurality of outer lateral grooves and a plurality of outer sipes. The plurality of outer lateral grooves are spaced apart in the circumferential direction of the tire surface. The outer sipes intersect and communicate with the outer lateral grooves. One end of the outer sipes extends toward the first main groove, and the other end of the outer sipes extends toward the outer edge of the tire surface.

[0008] The inner shoulder rib is provided with a plurality of inner lateral grooves, which are spaced apart in the circumferential direction of the tire surface. One end of the inner lateral groove is connected to the first main groove, and the other end extends toward the inner edge of the tire surface. The inner lateral groove has a different shape from the outer lateral groove and is asymmetrical.

[0009] As an optional technical solution for the above-mentioned tread structure, a turbulence-disrupting component is provided in the first main groove and / or the second main groove. The turbulence-disrupting components provided in the first main groove and / or the second main groove are spaced apart along the circumferential direction of the tire surface, and the lengths of the turbulence-disrupting components provided in the first main groove and / or the second main groove are different.

[0010] As an optional technical solution for the above-mentioned tread structure, the turbulence component includes a plurality of turbulence grooves, which are spaced apart along the circumferential direction of the tire surface, and the depths of the turbulence grooves located in the same first main groove and / or second main groove are different.

[0011] As an optional technical solution for the aforementioned tread structure, the central sipe includes a first oblique straight groove group disposed on the same rib. The first oblique straight groove group includes a first oblique straight groove and a second oblique straight groove. The first oblique straight groove and the second oblique straight groove are spaced apart and staggered. One end of the first oblique straight groove is connected to the first main groove or the second main groove, and the other end of the second oblique straight groove is a closed end. The first oblique straight groove and the second oblique straight groove are connected to different main grooves. The distance between adjacent first oblique straight grooves is different, and the distance between adjacent second oblique straight grooves is different; and / or,

[0012] The central groove pattern includes a second oblique straight groove group, which includes a third oblique straight groove and a fourth oblique straight groove disposed on the same rib. The third oblique straight groove and the fourth oblique straight groove are spaced apart and staggered. The third oblique straight groove is connected to the first main groove or the second main groove, and the fourth oblique straight groove is also connected to the first main groove or the second main groove. One end of the third oblique straight groove is connected to the first main groove or the second main groove, and the other end is closed. One end of the fourth oblique straight groove is connected to the first main groove or the second main groove, and the other end is closed. The third oblique straight groove and the fourth oblique straight groove are connected to different main grooves. The distance between adjacent third oblique straight grooves is different, and the distance between adjacent fourth oblique straight grooves is different; and / or,

[0013] The central groove pattern includes a third oblique straight groove group, which includes a fifth oblique straight groove, an oblique groove, and an oblique slot. The fifth oblique straight groove runs through the oblique groove, and the two ends of the oblique groove are closed ends. The two ends of the fifth oblique straight groove are connected to the oblique slot, and the oblique slot is located on different sides of the fifth oblique straight groove.

[0014] As an optional technical solution for the above-mentioned tread structure, the width of the first oblique straight groove decreases along the depth direction of the first oblique straight groove; and / or,

[0015] The width of the second oblique straight line decreases along the depth direction of the second oblique straight line; and / or,

[0016] The width of the third oblique straight line decreases along the depth direction of the third oblique straight line; and / or,

[0017] The width of the fourth oblique straight line tends to decrease along the depth direction of the fourth oblique straight line.

[0018] As an optional technical solution for the above-mentioned tread structure, the width of the first oblique straight groove decreases along the length direction of the first oblique straight groove; and / or,

[0019] The width of the second oblique straight line decreases along the length direction of the second oblique straight line; and / or,

[0020] The width of the third oblique straight line tends to decrease along the depth direction of the third oblique length.

[0021] As an optional technical solution for the above-mentioned tread structure, the outer sipes include a first sipe segment, a second sipe segment, a third sipe segment, a fourth sipe segment, and a fifth sipe segment connected in sequence. The extension direction of the first sipe segment intersects with the extension direction of the second sipe segment, the extension direction of the second sipe segment intersects with the extension direction of the third sipe segment, the extension direction of the third sipe segment intersects with the extension direction of the fourth sipe segment, and the extension direction of the fourth sipe segment intersects with the extension direction of the fifth sipe segment.

[0022] As an optional technical solution for the above-mentioned tread structure, the widths of the two first main grooves are different, and the number of the second main grooves is two or more, with the widths of the two or more second main grooves being different.

[0023] As an optional technical solution for the above-mentioned tread structure, the pitch between the multiple central sipes on each of the ribs is not equal; and / or,

[0024] The pitch between the multiple outer lateral grooves is not equal; and / or,

[0025] The pitch between the multiple inner lateral grooves is not equal; and / or,

[0026] The opening size of the outer lateral groove is smaller than that of the inner lateral groove.

[0027] According to another aspect of the present invention, a tire is provided, comprising a tire body and a tread structure as described in any of the above embodiments, the tread structure being disposed on the tire body.

[0028] The above technical solution has at least the following advantages or beneficial effects:

[0029] The outer shoulder ribs of the tread structure enhance the tire's handling stability, the inner shoulder ribs improve water drainage, and the central ribs maintain appropriate rigidity, reducing large deformations when the tire contacts the ground. This results in an overall tread structure that provides stable handling and braking performance while ensuring quietness and comfort, achieving optimization and balance in tread structure performance. This ensures good grip and handling in both dry and wet conditions, as well as low driving noise, while maximizing ride comfort and maintaining low rolling resistance. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the tread structure in an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the structure of the outer lateral groove and the outer knife groove provided in an embodiment of the present invention;

[0032] Figure 3 for Figure 1 A magnified view of a section at point A in the middle;

[0033] Figure 4 This is a schematic diagram of the inner lateral trench provided in an embodiment of the present invention.

[0034] In the picture:

[0035] 1. Tire surface; 2. First main groove; 3. Inner shoulder rib; 31. Inner lateral groove; 311. First groove segment; 312. Second groove segment; 4. Central rib; 41. Split rib; 42. Central sipe; 421. First diagonal straight groove; 422. Second diagonal straight groove; 423. Third diagonal straight groove; 424. Fourth diagonal straight groove; 425. Fifth diagonal straight groove; 426. Diagonal groove; 427. Diagonal groove; 5. Outer shoulder rib; 51. Outer lateral groove; 52. Outer sipe; 521. First groove segment; 522. Second groove segment; 523. Third groove segment; 524. Fourth groove segment; 525. Fifth groove segment; 6. Second main groove; 7. Spoiler assembly. Detailed Implementation

[0036] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0040] like Figure 1As shown, the tread structure provided by the present invention includes a tire surface 1, on which two first main grooves 2 are provided. The first main grooves 2 extend circumferentially along the tire surface 1, and the two first main grooves 2 are spaced apart axially along the tire surface 1. The two first main grooves 2 divide the tire surface 1 from the inside to the outside and form an inner shoulder rib 3, a middle rib 4 and an outer shoulder rib 5.

[0041] The central rib 4 is provided with a second main groove 6, which extends circumferentially along the tire surface 1 to divide the central rib 4 and form multiple sub-ribs 41. Each sub-rib 41 is provided with multiple central sipes 42. The multiple central sipes 42 are spaced apart in the circumferential direction of the tire surface 1, and the shapes of the central sipes 42 on the multiple sub-ribs 41 are different and asymmetrical.

[0042] Compared to solid ribs, the central sipes 42 effectively reduce the stiffness of the central ribs 4, thereby reducing the stiffness of the central area of ​​the tire crown 1 and improving tire comfort. Compared to wider grooves, each rib 41 has only multiple central sipes 42 as dividing lines, which effectively enhances the stiffness of the central ribs 4. During starting, braking, or cornering, it reduces the large-area deformation when the tire contacts the ground. The central sipes 42 ensure the tire's handling stability in both dry and wet conditions while reducing rolling resistance.

[0043] The outer shoulder rib 5 is provided with multiple outer lateral grooves 51 and multiple outer sipes 52. The multiple outer lateral grooves 51 are spaced apart in the circumferential direction of the tire surface 1. The outer sipes 52 intersect and communicate with the outer lateral grooves 51. One end of the outer sipes 52 extends toward the first main groove 2, and the other end of the outer sipes 52 extends toward the outer edge of the tire surface 1.

[0044] The outer shoulder rib 5 is provided with multiple outer lateral grooves 51 and multiple outer sipes 52. The multiple outer lateral grooves 51 are spaced apart in the circumferential direction of the tire surface 1. The outer sipes 52 intersect and connect with the outer lateral grooves 51 to reduce the flow path of the outer sipes 52. One end of the outer sipe 52 extends towards the first main groove 2, and the other end of the outer sipe 52 extends towards the outer edge of the tire surface 1. The width of the outer sipe 52 is much smaller than the width of the outer lateral grooves 51.

[0045] The outer shoulder rib 5 is divided into several parts by multiple outer lateral grooves 51, which effectively improves the tread contact area and ground stress distribution on the outer shoulder rib, which is beneficial to the tire's cornering stability, prevents early wear of the shoulder area and enhances the tire's handling stability. At the same time, the outer tread grooves and the outer lateral grooves 51 intersect and connect, and the outer tread grooves can effectively disperse the tread surface stress of the outer shoulder rib 5, providing better comfort in the early stages of tire use, while reducing tire noise.

[0046] Multiple inner lateral grooves 31 are provided on the inner shoulder rib 3. These inner lateral grooves 31 are spaced apart in the circumferential direction of the tire surface 1. One end of each inner lateral groove 31 is connected to the first main groove 2, and the other end extends towards the inner edge of the tire surface 1. The inner lateral grooves 31 have different shapes from the outer lateral grooves 51 and are asymmetrical. The inner lateral grooves 31 ensure the grip performance of the inner shoulder rib 3 and can also cut through the water film surface to quickly drain water, achieving good inner drainage performance during high-speed driving.

[0047] In this embodiment, the outer shoulder rib 5 of the tread structure enhances the tire's handling stability, the inner shoulder rib 3 improves drainage performance, and the central rib 4 maintains appropriate rigidity, reducing large deformation when the tire contacts the ground. This results in the overall tread structure having stable handling and braking performance, while also ensuring quietness and comfort. This achieves optimization and balance of tread structure performance, ensuring good dry and wet grip and handling, as well as low driving noise, while maximizing tire ride comfort and maintaining low rolling resistance.

[0048] The tread structure is composed of 2-8 pattern pitch units of different widths and numbers stacked circumferentially according to a simulation-optimized sequence. The pitch width ranges from 12mm to 55mm, and the number of pitches ranges from 40 to 95.

[0049] In some embodiments, a turbulence-inducing component 7 is provided in the first main groove 2 and / or the second main groove 6. The turbulence-inducing components 7 are spaced apart along the circumferential direction of the tire surface 1, and their lengths are different. Because of the presence of the turbulence-inducing components 7, the sound frequency is altered by the turbulence-inducing components 7, thereby achieving noise reduction. Furthermore, the spaced-apart turbulence-inducing components 7 along the circumferential direction of the tire surface 1 and their different lengths further interfere with the sound frequency, reducing noise.

[0050] In some embodiments, the lengths of the turbulence components 7 disposed in different first main trenches 2 / or second main trenches 6 are different.

[0051] That is, when the length of the spoiler component 7 in the first main groove 2 is different from the length of the spoiler component 7 in the second main groove 6, when there are two or more first main grooves 2, the length of the spoiler component 7 located in different first main grooves 2 is different, and when there are two or more second main grooves 6, the length of the spoiler component 7 located in different second main grooves 6 is different. This can further disrupt the spectrum of compressed air on the main grooves during driving, causing noise frequencies to superimpose and cancel each other out, thus reducing driving noise.

[0052] In some embodiments, the spoiler assembly 7 includes a plurality of spoiler grooves, which are spaced apart along the circumferential direction of the tire surface 1, and the spoiler grooves located in the same first main groove 2 and / or second main groove 6 have different depths.

[0053] Specifically, the sloshing groove is a three-dimensional slanted cylindrical sloshing groove, and the multiple sloshing grooves are of different lengths.

[0054] Specifically, the depths of the bleeder grooves located in the same first main groove 2 are different, and the depths of the bleeder grooves located in the same second main groove 6 are different. This can further disrupt the spectrum of compressed air on the main grooves during driving, so that the noise frequencies can be superimposed and canceled out, thereby reducing driving noise.

[0055] In some embodiments, the central groove 42 includes a first oblique straight groove group disposed on the same rib 41. The first oblique straight groove group includes a first oblique straight groove 421 and a second oblique straight groove 422. The first oblique straight groove 421 and the second oblique straight groove 422 are spaced apart and staggered. One end of the first oblique straight groove 421 is connected to the first main groove 2 or the second main groove 6, and the other end of the second oblique straight groove 422 is a closed end. The first oblique straight groove 421 and the second oblique straight groove 422 are connected to different main grooves. The distance between adjacent first oblique straight grooves 421 is different, and the distance between adjacent second oblique straight grooves 422 is different.

[0056] The lengths of the first oblique straight line 421 and the second oblique straight line 422 are different.

[0057] The first oblique straight groove 421 and the second oblique straight groove 422 are interleaved and spaced apart, so that the first oblique straight groove 421 and the second oblique straight groove 422 can cut the rib 41, but still keep the rib 41 intact rather than being divided into independent pattern blocks. This ensures the rigidity of the overall rib 41 when the tread rubber is under stress, reduces excessive deformation, and effectively maintains the tire's handling performance.

[0058] More specifically, the widths of the first oblique groove 421 and the second oblique groove 422 both decrease along the depth direction, which can prevent water from accumulating in the first oblique groove 421 and the second oblique groove 422, and can reduce excessive deformation of the first oblique groove 421 and the second oblique groove 422, thus maintaining the grip of the tire surface 1.

[0059] And / or, in some embodiments, the central groove 42 includes a second oblique straight groove group, the second oblique straight groove group including a third oblique straight groove 423 and a fourth oblique straight groove 424 disposed on the same rib 41, the third oblique straight groove 423 and the fourth oblique straight groove 424 are spaced apart and staggered, one end of the third oblique straight groove 423 is connected to the first main groove 2 or the second main groove 6, and the other end of the third oblique straight groove 423 is a closed end, one end of the fourth oblique straight groove 424 is connected to the first main groove 2 or the second main groove 6, and the other end of the fourth oblique straight groove 424 is a closed end, the third oblique straight groove 423 and the fourth oblique straight groove 424 are connected to different main grooves, the distance between adjacent third oblique straight grooves 423 is different, and the distance between adjacent fourth oblique straight grooves 424 is different.

[0060] The third diagonal straight stripe 423 and the fourth diagonal straight stripe 424 have the same pattern.

[0061] The third and fourth oblique straight grooves 423 and 424 are staggered and spaced apart, thus cutting the rib 41. By using several of these grooves to divide the central rib 41 into a single unit, the stiffness of the rib 41 is effectively reduced, optimizing the stress distribution at the center. While maintaining the overall strength of the central rib 41, the stiffness of this area is effectively reduced, minimizing excessive deformation during tire operation. This ensures stable handling in both dry and wet conditions while reducing rolling resistance. The staggered arrangement of the third and fourth oblique straight grooves 423 and 424 also effectively optimizes tread block noise and reduces tire noise.

[0062] The distances between adjacent third oblique straight grooves 423 and adjacent fourth oblique straight grooves 424 are different. This design effectively reduces the stiffness of the central rib 41 while maintaining the overall strength of the central rib, minimizing excessive deformation of the rib 41 during tire operation, ensuring dry and wet handling stability at the tire center, and reducing tire noise. Using identical third oblique straight grooves 423 and fourth oblique straight grooves 424 effectively divides the rib 41 into a single unit, optimizing the stress distribution of the central rib 41.

[0063] And / or, such as Figure 3 As shown, in some embodiments, the central groove 42 includes a third oblique straight groove group, which includes a fifth oblique straight groove 425, an oblique groove 426, and an oblique slot 427. The fifth oblique straight groove 425 penetrates the oblique groove 426, and the two ends of the oblique groove 426 are closed ends. The two ends of the fifth oblique straight groove 425 are connected to the oblique slot 427, which is disposed on different sides of the fifth oblique straight groove 425. The oblique slots 427 located on different sides of the fifth oblique straight groove 425 are respectively connected to the first main groove 2 and the second main groove 6. The two ends of the oblique groove 426 are respectively connected to the first main groove 2 and the second main groove 6.

[0064] The fifth oblique straight groove 425, oblique groove 426 and oblique groove 427 cut the rib 41 into several pieces, the same number as the pitch, effectively maintaining the tire's handling performance. On wet and slippery roads, the oblique groove 427 is an oblique V-shaped groove, which can quickly and effectively cut into the surface of the water film and improve the drainage performance of the tread pattern.

[0065] The third oblique straight groove group can effectively increase the contact area of ​​the outer tread blocks and the stiffness of the ribs 41, which is beneficial to the steering and handling stability of the tire. At the same time, the use of the oblique grooves 427 can ensure that the tire is in use and that the sharp angle at the contact point does not cause excessive stress concentration, resulting in tread block breakage. This ensures the overall continuity of the tire and guarantees the stiffness and grip of the ribs 41.

[0066] In some embodiments, the width of the first oblique line 421 decreases along the depth direction of the first oblique line 421. And / or, the width of the second oblique line 422 decreases along the depth direction of the second oblique line 422; and / or, the width of the third oblique line 423 decreases along the depth direction of the third oblique line 423; and / or, the width of the fourth oblique line 424 decreases along the depth direction of the fourth oblique line 424.

[0067] For example, the width of the third diagonal straight line 423 and the fourth diagonal straight line 424 both range from 0.4mm to 4.5mm. Optionally, the width of the third diagonal straight line 423 can be 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, 3mm, 3.1mm, 3.2mm, 3.3mm, 3.4mm, 3.5mm, 3.6mm, 3.7mm, 3.8mm, 3.9mm, 4mm, or 4.1mm. The width of the fourth diagonal straight line 424 can be 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, 3mm, 3.1mm, 3.2mm, 3.3mm, 3.4mm, 3.5mm, 3.6mm, 3.7mm, 3.8mm, 3.9mm, 4mm, 4.1mm, 4.2mm, 4.3mm, 4.4mm, or 4.5mm.

[0068] Optionally, both the first oblique straight groove 421 and the second oblique straight groove 422 are Y-direction fine grooves. The width of the first oblique straight groove 421 and the second oblique straight groove 422 are both in the range of 0.4mm to 10mm. For example, the width of the first oblique straight groove 421 is 0.4mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm or 10mm, and the width of the second oblique straight groove 422 is 0.4mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm or 10mm.

[0069] Optionally, the width of the fifth diagonal straight line 425 is in the range of 0.4mm to 8mm. For example, the value of the fifth diagonal straight line 425 is 0.4mm, 4mm, 5mm, 6mm, 7mm or 8mm.

[0070] Optionally, the width of the inclined groove 426 is in the range of 0.5mm to 9mm. For example, the width of the inclined groove 426 is 0.5mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm or 9mm.

[0071] Optionally, the width of the groove 427 can range from 0.4mm to 8mm. For example, the width of the groove 427 can be 0.4mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, or 8mm. This ensures that the tire's overall continuity and the rigidity and grip of the tread blocks are maintained, preventing excessive stress concentration due to the sharp angle at the contact patch.

[0072] This design facilitates water flow from the first oblique groove 421, the second oblique groove 422, the third oblique groove 423, the fourth oblique groove 424, and / or the fifth oblique groove 425, thereby improving the water-guiding performance of each oblique groove, preventing slippage, increasing initial ride comfort, and reducing noise. It also enhances the mutual support of the tire surface 1 during deformation, reducing excessive deformation, maintaining tire grip, and thus ensuring the overall handling performance of the tire.

[0073] In some embodiments, the width of the first oblique line 421 decreases along the length direction of the first oblique line 421; and / or, the width of the second oblique line 422 decreases along the length direction of the second oblique line 422; and / or, the width of the third oblique line 423 decreases along the depth direction of the third oblique length.

[0074] This design allows for water flow guidance, disperses stress on the ribs 41, and increases the strength of the ribs 41.

[0075] like Figure 2 As shown, in some embodiments, the outer groove 52 includes a first groove segment 521, a second groove segment 522, a third groove segment 523, a fourth groove segment 524, and a fifth groove segment 525 connected in sequence. The extension direction of the first groove segment 521 intersects the extension direction of the second groove segment 522, the extension direction of the second groove segment 522 intersects the extension direction of the third groove segment 523, the extension direction of the third groove segment 523 intersects the extension direction of the fourth groove segment 524, and the extension direction of the fourth groove segment 524 intersects the extension direction of the fifth groove segment 525.

[0076] This configuration increases the overall length of the outer tread groove, and the first groove segment 521, the third groove segment 523, and the fifth groove segment 525 extend in the same direction as the outer lateral groove 51. This separation of the outer shoulder rib 5 can appropriately reduce the rigidity of the outer shoulder rib 5, reduce the impact of the outer shoulder rib 5 on the ground, and improve comfort.

[0077] The outer shoulder rib 5 is divided into several parts by the outer lateral grooves 51 (the number of which is equivalent to the number of tread pitches), effectively increasing the tread contact area and stress distribution of the outer shoulder rib 5. This is beneficial for tire cornering stability, prevents premature wear of the shoulder area, and enhances tire handling stability. Simultaneously, shallow, fine outer sipes 52 are added to the outer side, effectively dispersing surface stress and providing better comfort in the early stages of tire use while reducing tire noise. After wear and tear in later stages, the contact area on the outer side of the tread increases, improving handling stability in the later stages of tire use. Furthermore, the fine groove design of the outer sipes 52 enhances the aesthetics of the tread pattern.

[0078] For example, the width of the outer groove 52 ranges from 0.3mm to 2mm. For example, the width of the outer groove 52 can be selected as 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm or 2mm.

[0079] The depth of the outer groove 52 ranges from 0.5mm to 3mm. For example, the depth of the outer groove 52 can be 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm or 3mm.

[0080] For example, the width of the outer lateral groove 51 ranges from 3mm to 15mm, and the width of the outer lateral groove 51 can be 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm or 15mm.

[0081] In some embodiments, the widths of the two first main grooves 2 are different, and the number of second main grooves 6 is two or more, with the widths of the two or more second main grooves 6 being different.

[0082] Optionally, the width of the second main groove 6 is in the range of 5mm to 22mm. For example, the width of the second main groove 6 is 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm or 22mm.

[0083] Optionally, the width of one of the first main grooves 2 is in the range of 4mm to 20mm. The main groove is located between the branch rib 41 and the inner shoulder rib 3. For example, the width of the first main groove 2 is 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm or 20mm. The width of the other first main groove 2 is in the range of 3mm to 19mm. For example, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm or 19mm.

[0084] The tire tread features grooves of varying widths, with the width of the central second main groove 6 exceeding the width of the inner first main groove 2, which in turn exceeds the width of the outer first main groove 2. This design ensures that water is quickly expelled from the tire during driving on wet surfaces, providing excellent wet grip, cornering stability, and precise steering response, thus improving wet safety. The difference in groove width between the inner and outer sides also ensures a larger contact area at the tread shoulders, guaranteeing overall grip and handling performance. Furthermore, the main grooves incorporate slanted cylindrical frequency-disrupting grooves of varying lengths, effectively disrupting the frequency spectrum of compressed air in the first main groove 2 and / or the second main groove 6 during driving. This causes noise frequencies to cancel each other out, reducing driving noise.

[0085] The above design ensures that the tire surface 1 quickly expels water during driving on wet roads, providing excellent wet grip, cornering stability, and precise steering response, thus improving wet safety performance. Simultaneously, the differentiated groove width design on the inner and outer sides ensures a larger contact area between the inner and outer tread shoulders, thereby guaranteeing overall tread grip and handling performance.

[0086] In some embodiments, the pitch between the plurality of central grooves 42 on each rib 41 is not equal; and / or, the pitch between the plurality of outer lateral grooves 51 is not equal; and / or, the pitch between the plurality of inner lateral grooves 31 is not equal; and / or, the groove size of the outer lateral groove 51 is smaller than the groove size of the inner lateral groove 31.

[0087] The above setup can avoid resonance problems caused by equally spaced patterns, reduce resonance, and thus achieve the goal of reducing noise.

[0088] The outer lateral groove 51 has a smaller opening size than the inner lateral groove 31, which effectively increases the contact area between the outer shoulder rib 5 and the ground. This is beneficial to the tire's cornering stability and can also reduce the deformation of the outer shoulder rib 5 when it contacts the ground, thus emphasizing handling. In addition, the inner lateral groove 31 has a larger width, which effectively increases the drainage capacity of the inner shoulder rib 3.

[0089] like Figure 4 As shown, in some embodiments, the inner lateral groove 31 includes a first groove segment 311 and a second groove segment 312 that are connected to each other, wherein the width of the first groove segment 311 is smaller than the width of the second groove segment 312, and the depth of the first groove segment 311 is smaller than the depth of the second groove segment 312.

[0090] The inner shoulder rib 3 is split by the first groove section 311 and the second groove section 312, which not only ensures the grip performance of the inner side, but also allows water to be quickly discharged by cutting the water film surface through the relatively wide second groove section 312, thus achieving the inner side drainage performance during high-speed driving.

[0091] For example, the width of the first groove section 311 ranges from 0.4mm to 3mm. For example, the width of the first groove section 311 is 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, or 3mm.

[0092] For example, the width of the second groove section 312 ranges from 3mm to 15mm. Specifically, the width of the second groove section 312 is 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm or 15mm.

[0093] The present invention also provides a tire, including a tire body and a tread structure provided by any of the above embodiments, wherein the tread structure is disposed on the tire body.

[0094] Because the tire includes the aforementioned tread structure, the outer shoulder ribs 5 of the tread structure can enhance the tire's handling stability, the inner shoulder ribs 3 can improve water drainage performance, and the central ribs 4 can maintain appropriate rigidity, reducing large deformation when the tire contacts the ground. This allows the overall tread structure to have stable handling and braking performance, as well as quiet and comfortable performance, achieving optimization and balance of tread structure performance. This ensures the tire's dry and wet grip and handling, as well as low driving noise, while maximizing the tire's ride comfort and maintaining low rolling resistance.

[0095] This tire is suitable for high-end sports cars and can meet the needs of highway and ordinary urban roads. It is a professional tire with good handling in both dry and wet conditions and low noise.

[0096] The tires provided in this embodiment are safer, more comfortable, and have a beautiful and practical appearance. They can be inspected and replaced at ordinary tire repair shops, making them very convenient and simple for users.

[0097] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A tread structure, characterized in that, The tire surface (1) includes two first main grooves (2) provided on the tire surface (1). The first main grooves (2) extend circumferentially along the tire surface (1), and the two first main grooves (2) are spaced apart axially along the tire surface (1). The two first main grooves (2) divide the tire surface (1) from the inside to the outside and form an inner shoulder rib (3), a middle rib (4), and an outer shoulder rib (5), wherein: The central rib (4) is provided with a second main groove (6), which extends circumferentially along the tire surface (1) to divide the central rib (4) and form a plurality of sub-ribs (41). Each sub-rib (41) is provided with a plurality of central sipes (42). The plurality of central sipes (42) are spaced apart in the circumferential direction of the tire surface (1), and the shapes of the central sipes (42) on the plurality of sub-ribs (41) are different and asymmetrical. The central sipes (42) are connected to the first main groove (2) and / or the second main groove (6). The outer shoulder rib (5) is provided with a plurality of outer lateral grooves (51) and a plurality of outer sipes (52). The plurality of outer lateral grooves (51) are spaced apart in the circumferential direction of the tire surface (1). The outer sipes (52) intersect and communicate with the outer lateral grooves (51). One end of the outer sipes (52) extends toward the first main groove (2), and the other end of the outer sipes (52) extends toward the outer edge of the tire surface (1). The inner shoulder rib (3) is provided with a plurality of inner lateral grooves (31). The plurality of inner lateral grooves (31) are spaced apart in the circumferential direction of the tire surface (1). One end of the inner lateral groove (31) is connected to the first main groove (2), and the other end extends toward the inner side of the tire surface (1). The inner lateral groove (31) and the outer lateral groove (51) have different shapes and are asymmetrical.

2. The tread structure according to claim 1, characterized in that, A turbulence-disrupting component (7) is provided in the first main groove (2) and / or the second main groove (6). The turbulence-disrupting components (7) provided in the first main groove (2) and / or the second main groove (6) are spaced apart along the circumferential direction of the tire surface (1), and the lengths of the turbulence-disrupting components (7) provided in the first main groove (2) and / or the second main groove (6) are different.

3. The tread structure according to claim 2, characterized in that, The turbulence component (7) includes a plurality of turbulence grooves, which are spaced apart along the circumferential direction of the tire surface (1). The depths of the turbulence grooves located in the same first main groove (2) and / or second main groove (6) are different.

4. The tread structure according to any one of claims 1-3, characterized in that, The central groove pattern (42) includes a first oblique straight groove group disposed on the same rib (41). The first oblique straight groove group includes a first oblique straight groove (421) and a second oblique straight groove (422). The first oblique straight groove (421) and the second oblique straight groove (422) are spaced apart and staggered. One end of the first oblique straight groove (421) is connected to the first main groove (2) or the second main groove (6), and the other end of the second oblique straight groove (422) is a closed end. One end of the second oblique straight groove (422) is connected to the first main groove (2) or the second main groove (6), and the other end of the second oblique straight groove (422) is a closed end. The first oblique straight groove (421) and the second oblique straight groove (422) are connected to different main grooves. The distance between adjacent first oblique straight grooves (421) is different, and the distance between adjacent second oblique straight grooves (422) is different; and / or, The central groove (42) includes a second oblique straight groove group, which includes a third oblique straight groove (423) and a fourth oblique straight groove (424) disposed on the same rib (41). The third oblique straight groove (423) and the fourth oblique straight groove (424) are spaced apart and staggered. The third oblique straight groove (423) is connected to the first main groove (2) or the second main groove (6). The fourth oblique straight groove (424) is connected to the first main groove (2) or the second main groove (6). One end of the third oblique straight line (423) is connected to the first main groove (2) or the second main groove (6), and the other end of the fourth oblique straight line (424) is a closed end. One end of the fourth oblique straight line (424) is connected to the first main groove (2) or the second main groove (6), and the other end of the fourth oblique straight line (424) is a closed end. The third oblique straight line (423) and the fourth oblique straight line (424) are connected to different main grooves. The distance between adjacent third oblique straight lines (423) is different, and the distance between adjacent fourth oblique straight lines (424) is different; and / or, The central groove (42) includes a third oblique straight groove group, which includes a fifth oblique straight groove (425), an oblique groove (426), and an oblique slot (427). The fifth oblique straight groove (425) penetrates the oblique groove (426), and the two ends of the oblique groove (426) are closed ends. The two ends of the fifth oblique straight groove (425) are connected to the oblique slot (427), and the oblique slot (427) is disposed on different sides of the fifth oblique straight groove (425).

5. The tread structure according to claim 4, characterized in that, The width of the first oblique straight line (421) decreases along the depth direction of the first oblique straight line (421); and / or, The width of the second oblique straight line (422) decreases along the depth direction of the second oblique straight line (422); and / or, The width of the third oblique straight line (423) decreases along the depth direction of the third oblique straight line (423); and / or, The width of the fourth oblique straight line (424) tends to decrease along the depth direction of the fourth oblique straight line (424).

6. The tread structure according to claim 4, characterized in that, The width of the first oblique straight line (421) decreases along the length direction of the first oblique straight line (421); and / or, The width of the second oblique straight line (422) decreases along the length direction of the second oblique straight line (422); and / or, The width of the third oblique straight line (423) tends to decrease along the depth direction of the third oblique length.

7. The tread structure according to any one of claims 1-3, characterized in that, The outer groove (52) includes a first groove segment (521), a second groove segment (522), a third groove segment (523), a fourth groove segment (524), and a fifth groove segment (525) connected in sequence. The extension direction of the first groove segment (521) intersects with the extension direction of the second groove segment (522), the extension direction of the second groove segment (522) intersects with the extension direction of the third groove segment (523), the extension direction of the third groove segment (523) intersects with the extension direction of the fourth groove segment (524), and the extension direction of the fourth groove segment (524) intersects with the extension direction of the fifth groove segment (525).

8. The tread structure according to any one of claims 1-3, characterized in that, The two first main grooves (2) have different widths, and the number of second main grooves (6) is more than two, and the widths of the two or more second main grooves (6) are different.

9. The tread structure according to any one of claims 1-3, characterized in that, The pitch between the plurality of central grooves (42) on each of the said ribs (41) is not equal; and / or, The pitch between the multiple outer lateral grooves (51) is not equal; and / or, The pitches between the multiple inner lateral grooves (31) are not equal; and / or, The opening size of the outer lateral groove (51) is smaller than the opening size of the inner lateral groove (31).

10. A tire, characterized in that, It includes a tire body and a tread structure as described in any one of claims 1-9, wherein the tread structure is disposed on the tire body.

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