Tire tread structure and tire with same

Abstract

The utility model discloses a tire tread structure and a tire with the tire tread structure. The tire tread structure is provided with a plurality of main grooves surrounding in the circumferential direction, and the main grooves are divided into outer side tire shoulder pattern ribs, a plurality of center pattern ribs and inner side tire shoulder pattern ribs. A plurality of first cutter grooves which are bent in the inclined direction and second cutter grooves which are arranged in the inclined direction are formed in the central pattern ribs in the circumferential direction, and at least part of the second cutter grooves and the first cutter grooves are arranged in a crossed mode. Through the arrangement of the main groove extending in the circumferential direction, rapid drainage is achieved, and excellent wet land wet skid resistance is provided; through the arrangement of the first cutter groove lines and the second cutter groove lines, the rigidity of the tread structure in the area of the central pattern ribs can be effectively reduced, the mute comfort performance of the tire is improved, and the cutter groove lines are smaller than grooves in width, so that the strength of the central pattern ribs can be enhanced, excessive deformation when the tire is in contact with the ground is reduced, and the service life of the tire is prolonged. And the dry / wet land control performance of the tire is maintained.

Description

Technical Field

[0001] The present application relates to the field of tire technology, and in particular to a tire tread structure and a tire having the same. Background Art

[0002] During vehicle use, the tire's grip performance and wear performance have always been the focus of market attention. However, with the continuous development of automotive industry technology and the continuous improvement of people's automotive concepts, higher and higher requirements are placed on tires that provide load-bearing capacity and transmit driving force. Especially with the development of new energy vehicles in recent years, the quietness and comfort of tires, dry and wet braking performance, and rolling resistance performance have received more and more attention.

[0003] Among existing tires, automobile tire patterns can be divided into large-block patterns and small-block patterns, as well as symmetrical patterns, asymmetrical patterns and guide patterns according to different classification standards; small-block patterns are beneficial to the quietness and comfort of the tire, but are not conducive to the dry / wet handling performance and braking performance of the tire; large-block patterns are just the opposite, which are beneficial to the tire's handling stability and braking performance, but are not conducive to quietness and comfort.

[0004] How to improve the tire's quietness and comfort performance while ensuring the tire's dry / wet handling performance, braking performance, and wetland drainage performance, achieve a balance between these performances, and design the best tire product has always been a technical issue that tire tread pattern designers need to focus on. Utility Model Content

[0005] The present application aims to at least partially address one of the aforementioned technical problems in the prior art. To this end, a first embodiment of the present application provides a tire tread structure that improves tire quietness and comfort while ensuring good dry / wet handling performance and wet drainage performance.

[0006] A second embodiment of the present application provides a tire.

[0007] According to the tire tread structure of the embodiment of the first aspect of the present application, the tread structure surrounds the circumference of the tire body;

[0008] The tread structure is provided with a plurality of main grooves circumferentially arranged along the circumferential direction, wherein the plurality of main grooves are sequentially arranged along the axial direction of the tire body and divide the tread structure into outer shoulder pattern ribs, a plurality of center pattern ribs and inner shoulder pattern ribs;

[0009] A plurality of the central pattern ribs are provided with a plurality of obliquely curved first sipes and obliquely arranged second sipes along the circumferential direction, and at least a portion of the second sipes are arranged to cross the first sipes.

[0010] Based on the above technical solution, the embodiments of the first aspect of the present application have at least the following beneficial effects: The tire tread structure of the present application is circumferentially arranged along the tire body, and the tread structure is provided with a plurality of circumferentially arranged main grooves. The plurality of main grooves are sequentially arranged along the axial direction of the tire body and divide the tread structure into outer shoulder pattern ribs, a plurality of center pattern ribs, and inner shoulder pattern ribs. The plurality of center pattern ribs are each circumferentially provided with a plurality of obliquely curved first sipes and obliquely arranged second sipes, with at least some of the second sipes being arranged intersecting with the first sipes. The provision of circumferentially extending main grooves in this application allows for rapid drainage, providing excellent wet-wet skid resistance. The provision of first and second sipes effectively reduces the rigidity of the tread structure in the area of the multiple center ribs, improving the tire's quiet and comfortable performance. Furthermore, the first and second guide grooves are narrower than the grooves provided on the center ribs in the prior art, enhancing the strength of the center ribs and reducing excessive deformation during tire contact, effectively maintaining the tire's handling performance in both wet and dry conditions. In summary, the tire achieves a good balance between wet and dry handling performance and wet drainage while improving quiet and comfortable performance.

[0011] According to the tire tread structure of the embodiment of the first aspect of the present application, the first sipes are divided into through sipes and semi-closed sipes;

[0012] The through sipes pass through the central pattern rib, and both ends are connected to the main grooves respectively;

[0013] One end of the semi-closed sipe is closed, and the other end is connected to the main groove;

[0014] The through sipes and the semi-closed sipes are alternately provided on at least a portion of the central pattern ribs along the circumferential direction.

[0015] According to the tire tread structure of the embodiment of the first aspect of the present application, the tread structure is provided with three central pattern ribs, namely a first central pattern rib located in the middle and a second and third central pattern ribs located on both sides, wherein the first central pattern rib is close to the outer shoulder pattern ribs;

[0016] The first center pattern rib and the second center pattern rib are both provided with the through sipes and the semi-closed sipes alternately along the circumferential direction;

[0017] On the first center pattern rib and the second center pattern rib, the second sipes are inclined in an opposite direction to the first sipes and are arranged in a cross shape with the through sipes and the semi-closed sipes.

[0018] According to the tire tread structure of the embodiment of the first aspect of the present application, a plurality of semi-closed sipes are provided on the third center pattern rib along the circumferential direction, and the second sipes are inclined in the same direction as the semi-closed sipes on the third center pattern rib and are spaced apart from the semi-closed sipes along the circumferential direction.

[0019] According to the tire tread structure of the embodiment of the first aspect of the present application, the first sipes provided on the third center pattern rib and the first sipes provided on the second center pattern rib are asymmetrically designed.

[0020] According to the tire tread structure of the embodiment of the first aspect of the present application, a plurality of first axial grooves and a plurality of third sipes are provided along the circumferential direction on the outer shoulder pattern rib, one end of the first axial groove is closed and the other end is connected to the outside, and the third sipe is provided between two adjacent first axial grooves along the circumferential direction.

[0021] According to the tire tread structure of the embodiment of the first aspect of the present application, a plurality of second axial grooves and a plurality of fourth sipes are provided on the inner shoulder pattern rib along the circumferential direction, one end of the second axial groove is connected to the main groove through the fifth sipe, and the other end is connected to the outside, and the fourth sipe is arranged between two adjacent second axial grooves along the circumferential direction.

[0022] According to the tire tread structure of the embodiment of the first aspect of the present application, the first axial groove and the second axial groove have an arc design along the axial direction and both ends adopt a multi-segment arc design.

[0023] According to the tire tread structure of the embodiment of the first aspect of the present application, the first sipe, the second sipe, the third sipe, the first axial groove or the second axial groove is provided with a wedge-shaped decorative edge.

[0024] According to the tire of the second embodiment of the present application, the tire includes a tire body and the above-mentioned tire tread structure.

[0025] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1Schematic diagram of the tread structure of a tire in an embodiment of the present application;

[0028] Figure 2 for Figure 1 A partial enlarged view of the first groove of the knife;

[0029] Figure 3 for Figure 2 Cross-sectional view of the AA section;

[0030] Figure 4 for Figure 1 A partial enlarged view of the third groove in the middle;

[0031] Figure 5 for Figure 4 Cross-sectional view of the B-B' portion;

[0032] Figure numerals: tread structure 100; center area 110, first center pattern rib 111, second center pattern rib 112, third center pattern rib 113, first sipe 114, through sipe 1141, semi-closed sipe 1142, small steel sheet 1143, second sipe 115; shoulder area 120, outer shoulder pattern rib 121, first axial groove 1211, third sipe 1212, inner shoulder pattern rib 122, second axial groove 1221, fourth sipe 1222, fifth sipe 1223; main groove 130. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0034] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0035] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0036] Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0037] Furthermore, the terms "first," "second," etc., are primarily used to distinguish between different devices, elements, or components (which may or may not be of the same type and configuration), and are not intended to indicate or imply the relative importance or quantity of the devices, elements, or components indicated. Unless otherwise specified, "plurality" means two or more.

[0038] The technical solution of the present application will be further described below with reference to the embodiments and drawings.

[0039] The embodiment of the present application provides a tire tread structure that can improve the quietness and comfort of the tire while ensuring that the tire has good dry / wet handling performance and wet drainage performance. Figure 1 The present application provides a tire, including a tire body (not shown in the figure) and a tire tread structure 100 circumferentially surrounding the tire body.

[0040] refer to Figure 1 , Figure 1 This is a plan view of the tire tread structure 100 in this application, refer to Figure 1 As indicated by the arrows, the horizontal direction is the axial direction of the tire body (hereinafter directly referred to as the axial direction), the vertical direction is the circumferential direction of the tire body (hereinafter directly referred to as the circumferential direction), and the direction perpendicular to the paper is the radial direction of the tire body (hereinafter directly referred to as the radial direction). It should be noted that the left side in the horizontal direction in the figure is the outer side of the tire body, and the right side in the horizontal direction is the inner side of the tire body. When the tire body is loaded onto the car body, the outer side is the side away from the longitudinal axis of the car body, and the inner side is the side close to the longitudinal axis of the car body. It should be noted that in this application, the dimension of each part of the tire tread structure 100 extending in the axial direction is called width, the dimension extending in the circumferential direction is called length, and the dimension extending in the radial direction is called depth.

[0041] In the present application, the tread structure 100 surrounds the tire body in the circumferential direction, and the tread structure 100 is provided with a plurality of main grooves 130 surrounding the circumferential direction. The plurality of main grooves 130 are arranged in sequence along the axial direction and divide the tread structure 100 into outer shoulder pattern ribs 121, a plurality of center pattern ribs and inner shoulder pattern ribs 122.

[0042] refer to Figure 1 Outer shoulder ribs 121 and inner shoulder ribs 122 form the shoulder regions 120 on either side of the tread structure 100, while a plurality of center ribs form the center region 110 of the tread structure 100. After the tire is loaded onto a vehicle body, the outer shoulder ribs 121 on the tread structure 100 are further away from the longitudinal axis of the vehicle body than the inner shoulder ribs 122. Main grooves 130 separate the outer shoulder ribs 121 from the center ribs, the multiple center ribs from each other, and the center ribs from the inner shoulder ribs 122. In this application, the axially spaced main grooves 130 enable rapid drainage, resulting in excellent wet-wet anti-skid performance, cornering stability, and precise steering responsiveness, thereby enhancing the tire's wet-wet safety performance.

[0043] refer to Figure 1 Multiple first sipes 114 and second sipes 115 are circumferentially provided on the plurality of center pattern ribs. The first sipes 114 are obliquely curved along the axial direction, while the second sipes 115 are inclined along the axial direction. By providing the first sipes 114 and second sipes 115, the rigidity of the central region 110 of the tread structure is reduced, improving the quietness and comfort of the tire body. Compared to the prior art method of providing grooves on the pattern ribs of the tread structure 100, the first sipes 114 and second sipes 115 are provided with a shorter circumferential length. When the vehicle starts, brakes, or turns, compared to grooves with a longer circumferential length, they can increase the mutual support of the tread rubber during deformation, reduce excessive deformation, and enhance the rigidity of the center pattern ribs, effectively improving quietness and ride comfort while maintaining the tire's handling performance.

[0044] Furthermore, the first sipes 114 and second sipes 115 may be arranged differently on different center pattern ribs. On at least some center pattern ribs, the first sipes 114 and second sipes 115 are arranged in an intersecting pattern. Alternatively, on other center pattern ribs, the first sipes 114 and second sipes 115 may be arranged alternately and in the same direction, which is not further limited in this application. The intersecting arrangement of the first sipes 114 and second sipes 115 in this application can further reduce the rigidity of the multiple center pattern ribs within the center region 110 of the tread structure, thereby improving the quietness and comfort performance of the tire.

[0045] refer to Figure 1In this application, the first sipes 114 are divided into through sipes 1141 and semi-enclosed sipes 1142. The through sipes 1141 axially extend through the central pattern rib, with both ends communicating with the main grooves 130 on either side of the central pattern rib. The semi-enclosed sipes 1142 are closed at one end and extend beyond the central pattern rib to communicate with the main grooves 130. In this application, each central pattern rib is circumferentially provided with a plurality of first sipes 114. At least some central pattern ribs are circumferentially provided with alternating through sipes 1141 and semi-enclosed sipes 1142. Alternatively, other central pattern ribs may be circumferentially provided with only through sipes 1141 or only semi-enclosed sipes 1142, which is not further defined in this application.

[0046] refer to Figure 1 As an example, the central area 110 of the tread structure described in the present application includes 3 central pattern ribs, and correspondingly, the number of main grooves 130 is 5. Along the horizontal direction in the figure, from left to right, there are the second central pattern rib 112, the first central pattern rib 111 and the third central pattern rib 113, wherein the first central pattern rib 111 is located in the middle of the central area 110, the second central pattern rib 112 is close to the outer shoulder pattern rib 121, and the third central pattern rib 113 is close to the inner shoulder pattern rib.

[0047] It should be noted that the number of central pattern ribs included in the central area 110 in the present application can be other values, preferably 3 to 5. Correspondingly, the number of main grooves 130 can also be the same value, preferably 2 to 4.

[0048] Furthermore, the through knife grooves 1141 and the semi-closed knife grooves 1142 are alternately provided on the first center pattern rib 111 and the second center pattern rib 112 along the circumferential direction, and the second knife grooves 115 on the first center pattern rib 111 and the second center pattern rib 112 are opposite to the inclination direction of the first knife grooves 114, and are cross-arranged with the through knife grooves 1141 and the semi-closed knife grooves 1142.

[0049] Optionally, the pitches of the through sipes 1141 and the semi-closed sipes 1142 on the first center pattern rib 111 and the second center pattern rib 112 along the circumferential direction are different. Figure 1In this application, the circumferential spacing between the alternating semi-enclosed sipes 1142 and through-sipes 1141 on the second center pattern rib 112 is relatively small, while the circumferential spacing between adjacent semi-enclosed sipes 1142 and through-sipes 1141 on the first center pattern rib 111 is relatively large. The unequal spacing of the first sipes 114 on the two center pattern ribs can avoid the problem of loud resonance caused by an equidistant spacing, thereby reducing noise. Optionally, the circumferential pitch of the through-sipes 1141 and semi-enclosed sipes 1142 on the first and second center pattern ribs 111, 112, can be the same, though this is not a strict limitation in this application.

[0050] refer to Figure 1 In the present application, the pitch of the second sipes 115 on the first center pattern rib 111 and the second center pattern rib 112 along the circumferential direction is the same. Optionally, the pitch of the second sipes 115 on the first center pattern rib 111 and the second center pattern rib 112 along the circumferential direction may also be different, and the present application does not make a strict limitation here.

[0051] refer to Figure 1 In the present application, only a plurality of semi-enclosed sipes 1142 are circumferentially defined on the third center pattern rib 113. On the third center pattern rib 113, the second sipes 115 and the semi-enclosed sipes 1142 have the same inclination direction, and the second sipes 115 and the semi-enclosed sipes 1142 are circumferentially spaced apart. By way of example, in the present application, two second sipes 115 are defined between two circumferentially adjacent semi-enclosed sipes 1142. Alternatively, the number of first sipes 114 between two circumferentially adjacent semi-enclosed sipes 1142 may be one, three, or any other number, which is not specifically limited in the present application.

[0052] refer to Figure 1 In the present application, the first sipes 114 provided on the second center pattern rib 112 and the first sipes 114 provided on the third center pattern rib 113 are asymmetrically designed. Specifically, the first sipes 114 provided on the second center pattern rib 112 are alternately provided through sipes 1141 and semi-enclosed sipes 1142, while the first sipes 114 provided on the third center pattern rib 113 are sequentially provided semi-enclosed sipes 1142. That is, the semi-enclosed sipes 1142 on the second center pattern rib 112 and the semi-enclosed sipes 1142 on the third center pattern rib 113 are asymmetrically designed, and the asymmetrical design includes non-axisymmetry and non-centerymmetry.

[0053] Optionally, in the present application, a small steel sheet 1143 is embedded in the middle of the first sipes 114 on the multiple center pattern ribs. The steel sheet reduces the stiffness of the center pattern rib to a certain extent, thereby increasing ride comfort.

[0054] It should be noted that the first sipes 114 and the second sipes 115 on different center pattern ribs can be set to sipes of different shapes, lengths, and depths. The setting of the first sipes 114 and the second sipes 115 is beneficial to improving the dry / wet grip performance of the tire, and at the same time can reduce the stiffness of the center area 110 of the tread structure to a certain extent, thereby improving the ride comfort of the tire body.

[0055] refer to Figure 1 In this application, a plurality of first axial grooves 1211 and a plurality of third sipes 1212 are provided on the outer shoulder pattern rib 121 along the circumferential direction, and the third sipes 1212 are arranged between adjacent first axial grooves 1211 along the circumferential direction; a plurality of second axial grooves 1221 and a plurality of fourth sipes 1222 are provided on the inner shoulder pattern rib 122 along the circumferential direction, and the fourth sipes 1222 are arranged between two adjacent second axial grooves 1221 along the circumferential direction.

[0056] It should be noted that in the present application, the pitch between two adjacent first axial grooves 1211 on the circumference of the outer shoulder pattern rib 121 and the pitch between two adjacent second axial grooves 1221 on the inner shoulder pattern rib 122 can be set to the same or different sizes, and when set to different sizes, the pitch between the second axial grooves 1221 should be smaller than the pitch between the first axial grooves 1211.

[0057] In other words, the plurality of first axial grooves 1211 and the plurality of second axial grooves 1221 respectively divide the outer shoulder pattern ribs 121 and the inner shoulder pattern ribs 122 into a plurality of outer shoulder pattern blocks and inner shoulder pattern blocks, wherein the number of pattern blocks of the outer shoulder pattern ribs 121 and the inner shoulder pattern ribs 122 are the same or different. When the number of pattern blocks is different, the inner shoulder pattern blocks should be more than the outer shoulder pattern blocks.

[0058] Preferably, the pitch of the first axial grooves 1211 or the second axial grooves 1221 ranges from 18 mm to 42 mm, and the number of the outer shoulder pattern blocks or the inner shoulder pattern blocks ranges from 65 to 85.

[0059] Furthermore, in the present application, one end of the first axial groove 1211 is closed and the other end is connected to the outside; the larger pitch design of the first axial groove 1211 effectively increases the ground contact area of the outer shoulder pattern block, enhances the stiffness of the outer shoulder pattern block, and is beneficial to the steering control stability performance of the tire body; at the same time, a plurality of third sipes 1212 are auxiliaryly arranged on the outer shoulder pattern block, which can reduce the stiffness of the outer shoulder pattern block and improve the comfort performance.

[0060] Furthermore, in this application, the axial width of the second axial groove 1221 is slightly greater than the axial width of the first axial groove 1211. One end of the second axial groove 1221 is connected to the main groove 130 via the fifth sipe 1223, and the other end is connected to the exterior. This effectively enhances the drainage of the inner shoulder block, thereby improving the drainage performance of the tire. The pitch of the second axial groove 1221 is the same as or smaller than that of the first axial groove 1211, improving tire ride comfort and reducing noise, while also facilitating wetland drainage performance.

[0061] refer to Figure 1 In the present application, the first axial groove 1211 and the second axial groove 1221 optimize the ground contact footprint shape and ground contact stress distribution of the shoulder part through a special tread curvature design, thereby preventing early wear of the shoulder part and enhancing the handling stability of the tire. Preferably, the top arc design on the first axial groove 1211 and the second axial groove 1221 adopts a multi-segment arc anti-eccentric wear design, that is, the two ends of the first axial groove 1211 and the second axial groove 1221 are arcs with continuously changing convexity.

[0062] It should be noted that the third sipe 1212 , the fourth sipe 1222 and the fifth sipe 1223 of the shoulder area 120 of the tread structure can be set to different shapes, different depths, different lengths and different widths, which are not specifically limited in this application.

[0063] In the present application, by setting the first axial groove 1211 and the second axial groove 1221 of different widths, the outer shoulder area 120 domain focuses on the handling stability performance of the tire body, and the inner shoulder area 120 domain focuses on the wetland drainage performance of the tire, so that the tire has both stable noise and ride comfort performance, and ensures dry / wet handling performance, thereby achieving optimization and balance of tire performance.

[0064] Optionally, the main groove 130 in this application has a radially inclined groove wall design, that is, the axial opening width of the main groove 130 gradually decreases from the opening to the groove bottom, which can improve the self-cleaning performance of the tire. At the same time, the maximum width at the opening of the main groove 130 can quickly drain water, providing excellent wet anti-skid performance, cornering stability, and precise steering responsiveness, which is conducive to improving wet safety performance. Preferably, the width of the main groove 130 is 6mm to 18mm, and the groove wall angle of the main groove 130 is 8 degrees to 15 degrees.

[0065] Optionally, in the present application, the ratio of the width of the center area 110 to the width of the tread structure 100 is 0.4 to 0.6, the ratio of the width of the outer shoulder pattern rib 121 or the inner shoulder pattern rib 122 to the width of the tread structure 100 is 0.2 to 0.3, and the width of the main groove 130 is 6 to 18 mm.

[0066] Further, refer to Figures 2 to 5 In the present application, a wedge-shaped decorative edge is provided at a local position of the first sipe 114, the second sipe 115, the third sipe 1212, the first axial groove 1211 or the second axial groove 1221.

[0067] It should be noted that the wedge-shaped decorative edge is an oblique triangle with a side length of 2mm to 10mm and a depth of 1mm to 6mm. During driving, the sharp corners of the tread blocks are prone to friction with the ground, causing not only surface wear but also noise. In this application, by providing wedge-shaped decorative edges at local locations on the first sipe 114, the second sipe 115, the third sipe 1212, the first axial groove 1211, and the second axial groove 1221, the sharp edges of the tread structure 100 are eliminated, reducing excessive deformation when the tire contacts the ground, thereby reducing abnormal friction between the tire and the ground and increasing the contact patch. This reduces tire wear, reduces tire noise, and improves handling performance. Furthermore, the combination of the wedge-shaped decorative beveled edge at the top of the first sipe 114 effectively reduces the stiffness of the tread structure's central area 110, enhancing the quiet and comfortable performance of the tire's main body.

[0068] Another embodiment of the present application provides a tire, including a tire body and a tread structure 100 circumferentially surrounding the tire body. It can be understood that since the tire applies the aforementioned tread structure 100, the tire also has the aforementioned characteristics and functions of the aforementioned tread structure 100, which will not be repeated here.

[0069] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present application.

Claims

1. A tire tread structure, characterized in that: The tread structure surrounds the circumference of the tire body; The tread structure is provided with a plurality of main grooves circumferentially arranged along the circumferential direction, wherein the plurality of main grooves are sequentially arranged along the axial direction of the tire body and divide the tread structure into outer shoulder pattern ribs, a plurality of center pattern ribs and inner shoulder pattern ribs; A plurality of the central pattern ribs are provided with a plurality of obliquely curved first sipes and obliquely arranged second sipes along the circumferential direction, and at least a portion of the second sipes are arranged to cross the first sipes.

2. The tire tread structure according to claim 1, characterized in that: The first sipes are divided into through sipes and semi-closed sipes; The through sipes pass through the central pattern rib, and both ends are connected to the main grooves respectively; One end of the semi-closed sipe is closed, and the other end is connected to the main groove; The through sipes and the semi-closed sipes are alternately provided on at least a portion of the central pattern ribs along the circumferential direction.

3. The tire tread structure according to claim 2, wherein: The tread structure is provided with three central pattern ribs, namely a first central pattern rib located in the middle and a second central pattern rib and a third central pattern rib located on both sides, wherein the first central pattern rib is close to the outer shoulder pattern rib; The first center pattern rib and the second center pattern rib are both provided with the through sipes and the semi-closed sipes alternately along the circumferential direction; On the first center pattern rib and the second center pattern rib, the second sipes are inclined in an opposite direction to the first sipes and are arranged in a cross shape with the through sipes and the semi-closed sipes.

4. The tire tread structure according to claim 3, wherein: A plurality of semi-closed sipes are provided on the third center pattern rib along the circumferential direction, and the second sipes are inclined in the same direction as the semi-closed sipes on the third center pattern rib and are spaced apart from the semi-closed sipes along the circumferential direction.

5. The tire tread structure according to claim 4, characterized in that: The first sipes provided on the third center pattern rib and the first sipes provided on the second center pattern rib are asymmetrically designed.

6. The tire tread structure according to claim 1, characterized in that: The outer shoulder pattern rib is provided with a plurality of first axial grooves and a plurality of third sipes along the circumferential direction, wherein one end of the first axial groove is closed and the other end is connected to the outside, and the third sipe is provided between two adjacent first axial grooves along the circumferential direction.

7. The tire tread structure according to claim 6, characterized in that: The inner shoulder pattern rib is provided with a plurality of second axial grooves and a plurality of fourth sipes along the circumferential direction, one end of the second axial groove is connected to the main groove through the fifth sipe, and the other end is connected to the outside, and the fourth sipe is arranged between two adjacent second axial grooves along the circumferential direction.

8. The tire tread structure according to claim 7, characterized in that: The first axial groove and the second axial groove have an arc design along the axial direction, and both ends adopt a multi-segment arc design.

9. The tire tread structure according to claim 7, wherein: The first sipe, the second sipe, the third sipe, the first axial groove or the second axial groove is provided with a wedge-shaped decorative edge.

10. A tire, characterized in that: The tire comprises a tire body and the tire tread structure according to any one of claims 1 to 9.

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