Pattern structure of radial tire and radial tire

Abstract

The utility model provides a pattern structure of a radial tire and the radial tire. A first pattern, a second pattern, a third pattern, a fourth pattern and a fifth pattern are different in structure; one end, facing the center line of the tire crown, of each first transverse groove of the first pattern and the first longitudinal groove are arranged at an interval; one end, facing the center line of the tire crown, of each second transverse groove of the fifth pattern and the fourth longitudinal groove are arranged at an interval; the two ends of each first inclined groove of the second pattern respectively extend to the first longitudinal groove and the second longitudinal groove; two ends of each second chute of the third pattern respectively extend to the second longitudinal groove and the third longitudinal groove; the fourth pattern comprises a plurality of third chutes; the two ends of a part of the third inclined grooves extend to the third longitudinal groove and the fourth longitudinal groove correspondingly. One end of a part of the third chutes extends to the third longitudinal groove or the fourth longitudinal groove, and the other end of the third chutes and the fourth longitudinal groove or the third longitudinal groove are arranged at intervals.

Description

Technical Field

[0001] The utility model relates to the technical field of tires, in particular to a pattern structure of a radial tire and a radial tire. Background Art

[0002] Tires are one of the core safety components of a car. The car contacts the ground through tires. Tires and suspensions work together to cushion the impact of the vehicle while driving, ensuring good riding comfort and driving stability. The friction generated by the contact between the tires and the road surface provides the traction and braking performance of the car. The tires support the entire weight of the vehicle through internal air pressure and bear the load of the vehicle. Tires play a very important role in the car.

[0003] Tire noise is the noise generated by the interaction between the tires of a moving vehicle and the road surface, the interaction between the tires and the air, and the deformation of the tires. The noise caused by the flow and disturbance of the surrounding air during tire movement is called air noise.

[0004] The tread structure of a tire plays a vital role in the performance of the tire, and the performance of the tire will directly affect the driving experience. Insufficient tire wear resistance will cause the tire to wear faster and have a shorter service life. Utility Model Content

[0005] The main purpose of the utility model is to provide a radial tire pattern structure and a radial tire, so as to improve the noise comfort and wet-slip performance of the tire.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a pattern structure of a radial tire is provided, wherein four longitudinal grooves of the pattern structure divide the tread of the radial tire into a first tread portion, a second tread portion, a third tread portion, a fourth tread portion and a fifth tread portion which are arranged in sequence; the pattern structure includes a first pattern arranged on the first tread portion, a second pattern arranged on the second tread portion, a third pattern arranged on the third tread portion, a fourth pattern arranged on the fourth tread portion, and a fifth pattern arranged on the fifth tread portion; the four longitudinal grooves include a first longitudinal groove, a second longitudinal groove, a third longitudinal groove and a fourth longitudinal groove which are arranged in sequence at intervals along the axial direction of the radial tire; the structures of the first pattern, the second pattern, the third pattern, the fourth pattern and the fifth pattern are all different; the first pattern includes a plurality of first transverse grooves spaced apart along the circumferential direction of the radial tire, and an end of each first transverse groove facing the crown centerline is aligned with the first transverse groove. The first longitudinal grooves are spaced apart; and / or the fifth pattern includes a plurality of second transverse grooves spaced apart along the circumferential direction of the radial tire, and one end of each second transverse groove facing the crown centerline is spaced apart from the fourth longitudinal groove; and / or the second pattern includes a plurality of first oblique grooves spaced apart along the circumferential direction of the radial tire, and both ends of each first oblique groove extend to the first longitudinal groove and the second longitudinal groove respectively; and / or the third pattern includes a plurality of second oblique grooves spaced apart along the circumferential direction of the radial tire, and both ends of each second oblique groove extend to the second longitudinal groove and the third longitudinal groove respectively; and / or the fourth pattern includes a plurality of third oblique grooves spaced apart along the circumferential direction of the radial tire; both ends of a portion of the plurality of third oblique grooves extend to the third longitudinal groove and the fourth longitudinal groove respectively; one end of a portion of the plurality of third oblique grooves extends to the third longitudinal groove or the fourth longitudinal groove, and the other end is spaced apart from the fourth longitudinal groove or the third longitudinal groove.

[0007] Furthermore, along the circumference of the radial tire, each first transverse groove has a first groove side wall and a second groove side wall that are relatively arranged; the first pattern also includes: a plurality of first grooves, and the plurality of first grooves are arranged one-to-one corresponding to the plurality of first transverse grooves; the groove depth of each first groove is less than the groove depth of the corresponding first transverse groove, and the groove bottom wall of each first groove and the first groove side wall of the corresponding first transverse groove form a first step structure.

[0008] Furthermore, the first pattern also includes a plurality of second grooves, which are arranged one-to-one corresponding to the plurality of first transverse grooves; the groove depth of each second groove is smaller than the groove depth of the corresponding first transverse groove, and the groove bottom wall of each second groove and the second groove side wall of the corresponding first transverse groove form a second step structure.

[0009] Furthermore, in the direction from the first tread portion to the fifth tread portion, the first transverse groove includes a first groove segment and a second groove segment connected to each other; the groove bottom wall of each first groove and the first groove side wall of the first groove segment of the corresponding first transverse groove form a first step structure.

[0010] Furthermore, the groove bottom wall of each second groove and the second groove side wall of the first groove section of the corresponding first transverse groove form a second step structure.

[0011] Furthermore, along the circumference of the radial tire, each second transverse groove has a third groove side wall and a fourth groove side wall that are relatively arranged; the fifth pattern also includes: a plurality of third grooves, and the plurality of third grooves are arranged one-to-one corresponding to the plurality of second transverse grooves; the groove depth of each third groove is less than the groove depth of the corresponding second transverse groove, and the groove bottom wall of each third groove and the third groove side wall of the corresponding second transverse groove form a third step structure.

[0012] Furthermore, the fifth pattern also includes a plurality of fourth grooves, which are arranged one-to-one corresponding to the plurality of second transverse grooves; the groove depth of each fourth groove is smaller than the groove depth of the corresponding second transverse groove, and the groove bottom wall of each fourth groove and the fourth groove side wall of the corresponding second transverse groove form a fourth step structure.

[0013] Furthermore, the first oblique groove includes a third groove segment and a fourth groove segment; the first end of the third groove segment extends to the first longitudinal groove, the second end of the third groove segment is connected to the first end of the fourth groove segment, and the second end of the fourth groove segment extends to the second longitudinal groove; from the first end to the second end of the third groove segment, the groove width of the third groove segment gradually increases; from the first end to the second end of the fourth groove segment, the groove width of the fourth groove segment gradually decreases.

[0014] Furthermore, along the circumference of the radial tire, the third groove segment has a fifth groove sidewall and a sixth groove sidewall that are relatively arranged, and the fourth groove segment has a seventh groove sidewall and an eighth groove sidewall that are relatively arranged; the fifth groove sidewall and the eighth groove sidewall are located on the same preset plane, and the sixth groove sidewall and the seventh groove sidewall are respectively located on both sides of the preset plane.

[0015] Furthermore, the second oblique groove includes a second oblique groove and a first steel sheet groove, the first end of the second oblique groove extends to the second longitudinal groove, the second end of the second oblique groove is connected to the first end of the first steel sheet groove, and the second end of the first steel sheet groove extends to the third longitudinal groove.

[0016] Furthermore, the multiple third oblique grooves include multiple oblique groove units distributed in sequence along the circumferential direction of the radial tire, and each oblique groove unit includes three third oblique grooves adjacent to each other in sequence; the three third oblique grooves of each oblique groove unit are respectively the third oblique groove, the fourth oblique groove and the second steel sheet groove in sequence; the first end of the third oblique groove extends to the third longitudinal groove, and the second end of the third oblique groove is spaced apart from the fourth longitudinal groove; the first end of the fourth oblique groove is spaced apart from the third longitudinal groove, and the second end of the third oblique groove extends to the fourth longitudinal groove; both ends of the second steel sheet groove extend to the third longitudinal groove and the fourth longitudinal groove, respectively.

[0017] Furthermore, a plurality of fold lines spaced apart along the circumference of the radial tire divide the tread of the radial tire into a plurality of pitch segments; the plurality of pitch segments include a plurality of pitch units sequentially distributed along the circumference of the radial tire, and each pitch unit includes three adjacent pitch segments in sequence; a plurality of first transverse grooves of the first pattern are arranged in one-to-one correspondence with a plurality of fold lines, and each first transverse groove is arranged on a corresponding fold line; a plurality of first oblique grooves of the second pattern are arranged in one-to-one correspondence with a plurality of fold lines, and each first oblique groove is arranged on a corresponding fold line; a plurality of second oblique grooves of the third pattern are arranged in one-to-one correspondence with a plurality of fold lines, and each second oblique groove is arranged on a corresponding fold line; a plurality of third oblique grooves of the fourth pattern are arranged in one-to-one correspondence with a plurality of fold lines, and each third oblique groove is arranged on a corresponding fold line; a plurality of second transverse grooves of the fifth pattern are arranged in one-to-one correspondence with a plurality of fold lines, and each second transverse groove is arranged on a corresponding fold line.

[0018] Furthermore, a noise reduction structure is arranged in each longitudinal groove, and the noise reduction structure includes a recessed groove arranged on the bottom wall of the longitudinal groove and a protruding portion convexly arranged on the bottom wall of the recessed groove; a protruding portion is convexly arranged on the convex side surface of the protruding portion.

[0019] According to another aspect of the utility model, a radial tire is provided, which includes the above-mentioned pattern structure.

[0020] By applying the technical solution of the utility model, the four longitudinal grooves of the pattern structure divide the tread of the radial tire into a first tread portion, a second tread portion, a third tread portion, a fourth tread portion and a fifth tread portion which are arranged in sequence; the pattern structure includes a first pattern arranged on the first tread portion, a second pattern arranged on the second tread portion, a third pattern arranged on the third tread portion, a fourth pattern arranged on the fourth tread portion, and a fifth pattern arranged on the fifth tread portion; the four longitudinal grooves include a first longitudinal groove, a second longitudinal groove, a third longitudinal groove and a fourth longitudinal groove which are arranged in sequence and at intervals along the axial direction of the radial tire; the structures of the first pattern, the second pattern, the third pattern, the fourth pattern and the fifth pattern are all different; the first pattern includes a plurality of first transverse grooves spaced apart along the circumferential direction of the radial tire, and one end of each first transverse groove facing the crown centerline is spaced apart from the first longitudinal groove; and / or the The fifth pattern includes a plurality of second transverse grooves spaced apart along the circumference of the radial tire, and one end of each second transverse groove facing the crown centerline is spaced apart from the fourth longitudinal groove; and / or the second pattern includes a plurality of first oblique grooves spaced apart along the circumference of the radial tire, and both ends of each first oblique groove extend to the first longitudinal groove and the second longitudinal groove respectively; and / or the third pattern includes a plurality of second oblique grooves spaced apart along the circumference of the radial tire, and both ends of each second oblique groove extend to the second longitudinal groove and the third longitudinal groove respectively; and / or the fourth pattern includes a plurality of third oblique grooves spaced apart along the circumference of the radial tire; both ends of a portion of the plurality of third oblique grooves extend to the third longitudinal groove and the fourth longitudinal groove respectively; one end of a portion of the plurality of third oblique grooves extends to the third longitudinal groove or the fourth longitudinal groove, and the other end is spaced apart from the fourth longitudinal groove or the third longitudinal groove. The pattern structure of the radial tire of the present application can improve the noise comfort and wet skid performance of the tire. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0022] Figure 1 The schematic diagram of the structure of the radial tire after the pattern structure according to the utility model is unfolded is shown;

[0023] Figure 2 Shows Figure 1 A schematic diagram of the structure of the first transverse groove, the first groove and the second groove of the pattern structure;

[0024] Figure 3 Shows Figure 1 A schematic structural diagram of a first oblique groove of the pattern structure;

[0025] Figure 4Shows Figure 1 A longitudinal cross-sectional view of a first oblique groove of the pattern structure;

[0026] Figure 5 Shows Figure 1 A schematic diagram of the structure of the second inclined groove of the pattern structure;

[0027] Figure 6 A schematic diagram showing a noise reduction structure of a radial tire pattern structure according to the utility model is shown;

[0028] Figure 7 Shows Figure 1 A longitudinal cross-sectional view from one perspective of a noise reduction structure in a first longitudinal groove of the pattern structure;

[0029] Figure 8 Shows Figure 1 A schematic diagram of a noise reduction structure in a third longitudinal groove of the pattern structure;

[0030] Fig. 9 Shows Figure 1 Schematic diagram of the broken lines of the pattern structure.

[0031] The above drawings include the following reference numerals:

[0032] 11. first longitudinal groove; 12. second longitudinal groove; 13. third longitudinal groove; 14. fourth longitudinal groove;

[0033] 20, first transverse groove; 201, first groove segment; 2011, first line segment; 2012, second line segment; 202, second groove segment; 21, first groove; 22, second groove;

[0034] 30. second inclined groove; 31. second inclined groove; 32. first steel sheet groove;

[0035] 40, third inclined groove; 41, third inclined groove; 42, fourth inclined groove; 43, second steel sheet groove;

[0036] 50, second transverse groove; 501, third transverse groove; 502, fourth transverse groove; 503, fifth transverse groove; 51, third concave groove; 52, fourth concave groove;

[0037] 61, first tread portion; 62, second tread portion; 63, third tread portion; 64, fourth tread portion; 65, fifth tread portion;

[0038] 70, first oblique groove; 71, third groove section; 72, fourth groove section; 73, first groove portion; 74, second groove portion; 75, third groove portion;

[0039] 80, broken line; 81, first straight line segment; 82, second straight line segment; 83, third straight line segment; 84, fourth straight line segment; 841, first connecting line segment; 85, fifth straight line segment; 851, second connecting line segment;

[0040] 90. Noise reduction structure; 91. Concave groove; 92. Protrusion; 921. First protrusion; 922. Second protrusion; 923. Third protrusion; 924. Fourth protrusion; 925. Fifth protrusion; 926. Sixth protrusion; 93. Raised portion. DETAILED DESCRIPTION

[0041] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0042] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0043] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0044] The utility model provides a radial tire pattern structure, please refer to Figures 1 to 9 The four longitudinal grooves of the pattern structure divide the tread of the radial tire into a first tread portion 61, a second tread portion 62, a third tread portion 63, a fourth tread portion 64 and a fifth tread portion 65 which are arranged in sequence; the pattern structure includes a first pattern arranged on the first tread portion 61, a second pattern arranged on the second tread portion 62, a third pattern arranged on the third tread portion 63, a fourth pattern arranged on the fourth tread portion 64, and a fifth pattern arranged on the fifth tread portion 65. The structures of the first pattern, the second pattern, the third pattern, the fourth pattern and the fifth pattern are all different, that is, the pattern structure of the radial tire of the present application adopts an asymmetric design.

[0045] The first tread portion 61 and the fifth tread portion 65 are shoulder pattern regions, the second tread portion 62 and the fourth tread portion 64 are intermediate pattern regions, and the third tread portion 63 is a center pattern region.

[0046] Each longitudinal groove is extended along the circumference of the radial tire and connected end to end. The four longitudinal grooves include a first longitudinal groove 11, a second longitudinal groove 12, a third longitudinal groove 13 and a fourth longitudinal groove 14 which are sequentially spaced apart along the axial direction of the radial tire.

[0047] In the axial direction of the radial tire, the direction from the first longitudinal groove 11 to the fourth longitudinal groove 14 is the same as the direction from the first tread portion 61 to the fifth tread portion 65 .

[0048] Optionally, the radial tire is a passenger car radial tire.

[0049] In this embodiment, the first pattern includes a plurality of first transverse grooves 20 spaced apart along the circumferential direction of the radial tire, and one end of each first transverse groove 20 facing the crown centerline is spaced apart from the first longitudinal groove 11 .

[0050] Specifically, along the circumferential direction of the radial tire, each first transverse groove 20 has two groove side walls that are opposite to each other, and the two groove side walls are respectively a first groove side wall and a second groove side wall.

[0051] Specifically, the first pattern also includes a plurality of first grooves 21, and the plurality of first grooves 21 are arranged in one-to-one correspondence with the plurality of first transverse grooves 20; each first groove 21 is arranged on one side of the first groove side wall of the corresponding first transverse groove 20, so that each first groove 21 is connected with the corresponding first transverse groove 20; the groove depth of each first groove 21 is less than the groove depth of the corresponding first transverse groove 20, and the groove bottom wall of each first groove 21 and the first groove side wall of the corresponding first transverse groove 20 form a first step structure.

[0052] Specifically, the first pattern also includes a plurality of second grooves 22, and the plurality of second grooves 22 are arranged in one-to-one correspondence with the plurality of first transverse grooves 20; each second groove 22 is arranged on one side of the second groove side wall of the corresponding first transverse groove 20, so that each second groove 22 is connected with the corresponding first transverse groove 20; the groove depth of each second groove 22 is less than the groove depth of the corresponding first transverse groove 20, and the groove bottom wall of each second groove 22 and the second groove side wall of the corresponding first transverse groove 20 form a second step structure.

[0053] Specifically, in a direction from the first tread portion 61 to the fifth tread portion 65 , the first transverse groove 20 includes a first groove segment 201 and a second groove segment 202 connected to each other.

[0054] Specifically, the groove bottom wall of each first groove 21 and the first groove side wall of the first groove section 201 of the corresponding first transverse groove 20 form a first step structure.

[0055] Specifically, the groove bottom wall of each second groove 22 and the second groove side wall of the first groove section 201 of the corresponding first transverse groove 20 form a second step structure.

[0056] Specifically, the projection of the first groove 21 on the tread of the radial tire is a triangle or an approximate triangle; further, the projection line of the first groove sidewall of the first groove segment 201 on the tread of the radial tire includes a first line segment 2011 and a second line segment 2012 set at an angle, and the angle between the first line segment 2011 and the second line segment 2012 is set in a direction away from the second groove sidewall.

[0057] Specifically, the projection of the second groove 22 on the tread of the radial tire is a triangle or a nearly triangle.

[0058] Specifically, the vertex angle formed by the groove sidewall of the first groove 21 is set close to the end of the first groove segment 201 away from the crown centerline, and the vertex angle formed by the groove sidewall of the second groove 22 is set close to the end of the first groove segment 201 facing the crown centerline.

[0059] Specifically, the extension directions of the plurality of first transverse grooves 20 of the first pattern are all parallel.

[0060] In this embodiment, the fifth pattern includes a plurality of second transverse grooves 50 spaced apart along the circumferential direction of the radial tire, and one end of each second transverse groove 50 facing the crown centerline is spaced apart from the fourth longitudinal groove 14 .

[0061] Specifically, along the circumferential direction of the radial tire, each second lateral groove 50 has two groove side walls that are opposite to each other, and the two groove side walls are respectively a third groove side wall and a fourth groove side wall.

[0062] Specifically, the fifth pattern also includes a plurality of third grooves 51, and the plurality of third grooves 51 are arranged in one-to-one correspondence with the plurality of second transverse grooves 50; each third groove 51 is arranged on one side of the third groove side wall of the corresponding second transverse groove 50, so that each third groove 51 is connected with the corresponding second transverse groove 50; the groove depth of each third groove 51 is less than the groove depth of the corresponding second transverse groove 50, and the groove bottom wall of each third groove 51 and the third groove side wall of the corresponding second transverse groove 50 form a third step structure.

[0063] Specifically, the fifth pattern also includes a plurality of fourth grooves 52, and the plurality of fourth grooves 52 are arranged in one-to-one correspondence with the plurality of second transverse grooves 50; each fourth groove 52 is arranged on one side of the fourth groove side wall of the corresponding second transverse groove 50, so that each fourth groove 52 is connected with the corresponding second transverse groove 50; the groove depth of each fourth groove 52 is less than the groove depth of the corresponding second transverse groove 50, and the groove bottom wall of each fourth groove 52 and the fourth groove side wall of the corresponding second transverse groove 50 form a fourth step structure.

[0064] Specifically, the projection of the third groove 51 on the tread of the radial tire is a triangle or a nearly triangle.

[0065] Specifically, the projection of the fourth groove 52 on the tread of the radial tire is a triangle or a nearly triangle.

[0066] Specifically, the top angle formed by the groove sidewall of the third groove 51 is set close to the end of the second transverse groove 50 facing the crown centerline, and the top angle formed by the groove sidewall of the fourth groove 52 is set close to the end of the second transverse groove 50 away from the crown centerline.

[0067] Specifically, the extension directions of the plurality of second transverse grooves 50 of the fifth pattern are all parallel.

[0068] In this embodiment, the second pattern includes a plurality of first oblique grooves 70 spaced apart along the circumferential direction of the radial tire, and both ends of each first oblique groove 70 extend to the first longitudinal groove 11 and the second longitudinal groove 12 respectively.

[0069] Specifically, the first oblique groove 70 includes a third groove segment 71 and a fourth groove segment 72 ; the first end of the third groove segment 71 extends to the first longitudinal groove 11 , the second end of the third groove segment 71 is connected to the first end of the fourth groove segment 72 , and the second end of the fourth groove segment 72 extends to the second longitudinal groove 12 .

[0070] Specifically, the groove width of the third groove segment 71 gradually increases from the first end to the second end of the third groove segment 71 ; and the groove width of the fourth groove segment 72 gradually decreases from the first end to the second end of the fourth groove segment 72 .

[0071] Specifically, along the circumference of the radial tire, the third groove segment 71 has two groove side walls arranged opposite to each other, and the two groove side walls are the fifth groove side wall and the sixth groove side wall, respectively. Along the circumference of the radial tire, the fourth groove segment 72 has two groove side walls arranged opposite to each other, and the two groove side walls are the seventh groove side wall and the eighth groove side wall, respectively.

[0072] Specifically, the fifth groove sidewall and the eighth groove sidewall are located on the same preset plane; along the circumferential direction of the radial tire, the sixth groove sidewall and the seventh groove sidewall are located on both sides of the preset plane respectively.

[0073] Specifically, the second end surface of the third groove segment 71 and the first end surface of the fourth groove segment 72 are located on the same plane, and the plane is arranged at an angle to the center line of the tread crown.

[0074] Specifically, the preset planes of the plurality of first oblique grooves 70 of the second pattern are all parallel.

[0075] Specifically, the extending direction of the first oblique groove 70 is arranged at an angle with the axial direction of the radial tire. Optionally, the extending direction of the first oblique groove 70 is arranged at an angle with the axial direction of the radial tire of 20 degrees to 30 degrees.

[0076] Specifically, the preset plane is arranged at an angle with the central axis of the radial tire. Optionally, the angle between the preset plane and the central axis of the radial tire is 20 degrees to 30 degrees.

[0077] Specifically, the extending direction of the first oblique groove 70 is parallel to or the same as the preset plane.

[0078] Specifically, along the groove width direction of the first oblique groove 70, the first oblique groove 70 includes a first groove portion 73, a second groove portion 74 and a third groove portion 75 connected in sequence; from the first groove portion 73 to the third groove portion 75, the groove depth of the first groove portion 73 remains unchanged, the groove depth of the second groove portion 74 gradually decreases, and the groove depth of the third groove portion 75 gradually increases. Optionally, the groove depth of the third groove portion 75 increases linearly. The third groove segment 71 and the fourth groove segment 72 both adopt this structural design. By making the first oblique groove 70 adopt a variable depth structural design, the air pump noise of the tire increased due to the connection of the first oblique groove 70 can be reduced.

[0079] In this embodiment, the third pattern includes a plurality of second oblique grooves 30 spaced apart along the circumferential direction of the radial tire, and both ends of each second oblique groove 30 extend to the second longitudinal groove 12 and the third longitudinal groove 13 respectively.

[0080] Specifically, the second oblique groove 30 includes a second oblique groove 31 and a first steel sheet groove 32 , the first end of the second oblique groove 31 extends to the second longitudinal groove 12 , the second end of the second oblique groove 31 is connected to the first end of the first steel sheet groove 32 , and the second end of the first steel sheet groove 32 extends to the third longitudinal groove 13 .

[0081] Specifically, the second oblique grooves 31 of the second oblique grooves 30 and the first steel sheet grooves 32 extend in the same direction, and the extending directions of the plurality of second oblique grooves 30 of the third pattern are all parallel.

[0082] Specifically, the extending direction of the second oblique groove 30 is arranged at an angle with the axial direction of the radial tire. Optionally, the extending direction of the second oblique groove 30 is arranged at an angle with the axial direction of the radial tire of 20 degrees to 30 degrees.

[0083] In the present embodiment, the fourth pattern includes a plurality of third oblique grooves 40 distributed at intervals along the circumferential direction of the radial tire; both ends of a portion of the plurality of third oblique grooves 40 extend to the third longitudinal groove 13 and the fourth longitudinal groove 14, respectively; one end of a portion of the plurality of third oblique grooves 40 extends to the third longitudinal groove 13 or the fourth longitudinal groove 14, and the other end is spaced apart from the fourth longitudinal groove 14 or the third longitudinal groove 13.

[0084] Specifically, the plurality of third oblique grooves 40 include a plurality of oblique groove units sequentially distributed along the circumference of the radial tire, and each oblique groove unit includes three adjacent third oblique grooves 40 sequentially distributed along the circumference of the radial tire. The three third oblique grooves 40 of each oblique groove unit are respectively and sequentially a third oblique groove 41, a fourth oblique groove 42, and a second steel sheet groove 43.

[0085] Specifically, the first end of the third oblique groove 41 extends to the third longitudinal groove 13 , and the second end of the third oblique groove 41 is spaced apart from the fourth longitudinal groove 14 .

[0086] Specifically, the first end of the fourth oblique groove 42 is spaced apart from the third longitudinal groove 13 , and the second end of the third oblique groove 41 extends to the fourth longitudinal groove 14 .

[0087] Specifically, both ends of the second steel sheet groove 43 extend to the third longitudinal groove 13 and the fourth longitudinal groove 14 respectively.

[0088] Specifically, the extension directions of the plurality of third oblique grooves 40 of the fourth pattern are all parallel.

[0089] Specifically, the extending direction of the third oblique groove 40 is arranged at an angle with the axial direction of the radial tire. Optionally, the extending direction of the third oblique groove 40 is arranged at an angle with the axial direction of the radial tire of 20 degrees to 30 degrees.

[0090] Specifically, the width of the third oblique groove 41 gradually decreases from the first end to the second end of the third oblique groove 41 .

[0091] Specifically, the width of the third oblique groove 41 gradually increases from the first end to the second end of the fourth oblique groove 42 .

[0092] Compared with the second pattern, the third and fourth patterns both use grooves and steel sheets to divide the tread blocks, so as to further differentiate the rigidity of the inner and outer shoulder blocks of the tire's asymmetric pattern, thereby improving the steering responsiveness of the tire at small turns and enhancing the handling performance on dry and wet roads.

[0093] In the present embodiment, in the longitudinal groove, the first transverse groove 20, the first oblique groove 70, the second oblique groove 31, the third oblique groove 41, the fourth oblique groove 42, and the second transverse groove 50, the groove walls on both sides of each groove are designed to be inclined at different angles; in this way, when a stone is stuck in the groove, due to the different forces on the groove walls on both sides of the groove, it is helpful to throw or eject the stone stuck in the tire groove during vehicle driving; on the one hand, it can prevent the angular stones from wearing and damaging the tire in the groove, or even puncturing the tire to cause the tire to burst or leak, which is beneficial to improving the safety performance of the tire; on the other hand, it can prevent the tire from generating discordant noise due to the stuck stones, thereby avoiding affecting the noise comfort; furthermore, it can avoid hindering the discharge of accumulated water in the groove due to the presence of stones, that is, avoiding poor drainage and affecting the wetland performance, thereby improving the wetland handling and safety of the tire.

[0094] In this embodiment, a noise reduction structure 90 is provided in each longitudinal groove; the noise reduction structure 90 includes a concave groove 91 provided on the groove bottom wall of the longitudinal groove and a protrusion 92 provided on the groove bottom wall of the concave groove 91, that is, the concave groove 91 is provided concavely from the groove bottom wall of the longitudinal groove, and the protrusion 92 is provided protrudingly from the groove bottom wall of the concave groove 91; a protrusion 93 is provided protrudingly on the protruding side of the protrusion 92. On the one hand, the provision of the protrusion 92 and the protrusion 93 is conducive to disrupting the fixed flow frequency of the gas in the longitudinal groove and reducing noise; on the other hand, the provision of the concave groove 91 increases the water capacity of the longitudinal groove, avoids the reduction of the water capacity in the longitudinal groove caused by the provision of the protrusion 92, and is conducive to drainage while effectively reducing noise.

[0095] Optionally, along the axial direction of the radial tire, the groove width of the concave groove 91 is slightly larger than the groove width of the longitudinal groove.

[0096] Optionally, the groove depth d of the depressed groove 91 is 0.5 mm, that is, the groove bottom wall of the longitudinal groove is depressed by 0.5 mm to form the depressed groove 91 .

[0097] Optionally, the projection of the concave groove 91 on the tread of the radial tire is a quadrilateral; for example, the projection of the concave groove 91 on the tread of the radial tire is a parallelogram.

[0098] Specifically, the protruding direction of the protruding portion 92 is parallel to or the same as the groove depth direction of the longitudinal groove.

[0099] Optionally, the noise reduction structure 90 includes one or two protrusions 92. When the noise reduction structure 90 includes two protrusions 92, the two protrusions 92 are spaced apart in the axial direction of the radial tire.

[0100] In the specific implementation process, the number of the protrusions 92 of the noise reduction structure 90 in the longitudinal groove is determined according to the width of the longitudinal groove. When the noise reduction structure 90 includes one protrusion 92, the protrusion 92 is located in the middle of the longitudinal groove along the axial direction of the radial tire. When the noise reduction structure 90 includes two protrusions 92, the two protrusions 92 are evenly distributed along the axial direction of the radial tire.

[0101] Optionally, the protrusion 92 has a certain width along the circumferential direction of the radial tire; when the noise reduction structure 90 includes two protrusions 92, the two protrusions 92 are arranged in parallel.

[0102] Optionally, the width direction of the protrusion 92 is parallel to or the same as the circumferential direction of the radial tire.

[0103] For example Figure 1 In the embodiment, the noise reduction structure 90 in the first longitudinal groove 11 includes two protrusions 92; the two protrusions 92 of the noise reduction structure 90 in the first longitudinal groove 11 are respectively a first protrusion 921 and a second protrusion 922; along the circumferential direction of the radial tire, the upper end of the first protrusion 921 extends to the upper groove side wall of the recessed groove 91, the lower end of the first protrusion 921 is spaced apart from the lower groove side wall of the recessed groove 91, the upper end of the second protrusion 922 is spaced apart from the upper groove side wall of the recessed groove 91, the lower end of the second protrusion 922 extends to the lower groove side wall of the recessed groove 91, and the lower end of the first protrusion 921 is spaced apart from the upper end of the second protrusion 922.

[0104] For example Figure 1 In the embodiment, the noise reduction structure 90 in the second longitudinal groove 12 includes two protrusions 92; the two protrusions 92 of the noise reduction structure 90 in the second longitudinal groove 12 are respectively a third protrusion 923 and a fourth protrusion 924; along the circumferential direction of the radial tire, the upper end and the lower end of the third protrusion 923 are respectively spaced apart from the upper groove side wall and the lower groove side wall of the recessed groove 91, and the upper end and the lower end of the fourth protrusion 924 are respectively spaced apart from the upper groove side wall and the lower groove side wall of the recessed groove 91.

[0105] For example Figure 1 In the embodiment, the noise reduction structure 90 in the third longitudinal groove 13 includes two protrusions 92; the two protrusions 92 of the noise reduction structure 90 in the third longitudinal groove 13 are respectively a fifth protrusion 925 and a sixth protrusion 926; along the circumferential direction of the radial tire, the upper end of the fifth protrusion 925 is spaced apart from the upper groove side wall of the recessed groove 91, and the lower end of the fifth protrusion 925 extends to the lower groove side wall of the recessed groove 91, the upper end of the sixth protrusion 926 is spaced apart from the upper groove side wall of the recessed groove 91, and the lower end of the sixth protrusion 926 extends to the lower groove side wall of the recessed groove 91.

[0106] For example Figure 1In the embodiment, the noise reduction structure 90 in the fourth longitudinal groove 14 includes a protrusion 92, and along the circumferential direction of the radial tire, the upper end and the lower end of the protrusion 92 are spaced apart from the upper groove side wall and the lower groove side wall of the recessed groove 91 respectively.

[0107] Optionally, the protruding portion 92 has two protruding side surfaces that are arranged opposite to each other along the axial direction of the radial tire, and the protruding portions 93 are protrudingly provided on both protruding side surfaces of the protruding portion 92 .

[0108] Optionally, the protrusions 93 on the two protruding sides of the protrusion 92 are staggered.

[0109] Specifically, the protrusions 92 and the raised portions 93 form a 3D structure.

[0110] Optionally, each longitudinal groove is provided with a plurality of noise reduction structures 90 spaced apart along the circumferential direction of the radial tire; in any two longitudinal grooves, any noise reduction structure 90 in one longitudinal groove is staggered with any noise reduction structure 90 in another longitudinal groove along the circumferential direction of the radial tire, that is, any noise reduction structure 90 in one longitudinal groove is spaced apart with any noise reduction structure 90 in another longitudinal groove along the circumferential direction of the radial tire.

[0111] Optionally, 2 to 4 noise reduction structures 90 are disposed in each longitudinal groove.

[0112] Optionally, a protruding height h from the protruding top surface of the protruding portion 92 to the bottom wall of the longitudinal groove is less than or equal to 2 / 3 of the groove depth of the longitudinal groove.

[0113] In this embodiment, a plurality of fold lines 80 spaced apart along the circumference of the radial tire divide the tread of the radial tire into a plurality of pitch segments; the plurality of pitch segments include a plurality of pitch units sequentially distributed along the circumference of the radial tire, and each pitch unit includes three adjacent pitch segments sequentially distributed along the circumference of the radial tire.

[0114] Specifically, the first transverse grooves 20 of the first pattern are arranged in one-to-one correspondence with the fold lines 80, and each first transverse groove 20 is arranged on a corresponding fold line 80; the first oblique grooves 70 of the second pattern are arranged in one-to-one correspondence with the fold lines 80, and each first oblique groove 70 is arranged on a corresponding fold line 80; the second oblique grooves 30 of the third pattern are arranged in one-to-one correspondence with the fold lines 80, and each second oblique groove 30 is arranged on a corresponding fold line 80; the third oblique grooves 40 of the fourth pattern are arranged in one-to-one correspondence with the fold lines 80, and each third oblique groove 40 is arranged on a corresponding fold line 80; the second transverse grooves 50 of the fifth pattern are arranged in one-to-one correspondence with the fold lines 80, and each second transverse groove 50 is arranged on a corresponding fold line 80. Among them, the second steel sheet grooves 43 of any two adjacent oblique groove units are a pitch unit.

[0115] Specifically, the three pitch segments of each pitch unit L are respectively the first pitch segments L and the second pitch segments L distributed in sequence along the circumference of the radial tire. 1 , the second pitch segment L 2 and the third pitch segment L 3 The values ​​of the first pitch segments of the plurality of pitch units are equal, the values ​​of the second pitch segments of the plurality of pitch units are equal, and the values ​​of the third pitch segments of the plurality of pitch units are equal. The value of the pitch segment refers to the length of the pitch segment along the circumference of the radial tire.

[0116] Specifically, different pitch segments are arranged in a disordered and mixed manner along the circumference of the tire, which will affect the vibration frequency of the gas in the pattern groove. 1 The value of the second pitch segment L 2 The value of the third pitch segment L 3 The value of P is from five values 1 , P 2 , P 3 , P 4 and P 5 Random value in the middle; 0.83P 3 ≤P 1 ≤0.88P 3 , 0.91P 3 ≤P 2 ≤0.95P 3 , 1.08P 3 ≤P 4 ≤1.12P 3 , 1.14P 3 ≤P 5 ≤1.20P 3 In this way, the complexity and diversity of the pitch segments can be increased, so that the noise energy can be dispersed over a wider frequency band as much as possible, affecting the vibration frequency of the gas in the pattern grooves, so as to effectively disrupt the audio frequency of the pattern cavity noise, reduce the noise peak, and improve noise comfort.

[0117] Optionally, in any two adjacent longitudinal grooves, the spacing between any noise reduction structure 90 in one longitudinal groove and any noise reduction structure 90 in another longitudinal groove along the circumferential direction of the radial tire is greater than or equal to the pitch unit L. This is to avoid the effect of too many and too densely arranged noise reduction structures 90 on the rigidity of the pattern at the same position (along the circumferential direction of the radial tire), and to avoid the problem of reduced controllability due to reduced rigidity.

[0118] Optionally, in each pitch unit L, and in any two adjacent longitudinal grooves, only one of the longitudinal grooves is provided with a noise reduction structure 90 .

[0119] Optionally, in each pitch unit L, the length of the concave groove 91 of the noise reduction structure 90 in each longitudinal groove along the circumferential direction of the radial tire is 0.2 to 0.5 of the pitch unit L.

[0120] In this embodiment, in the first transverse groove 20, the third groove segment 71, the fourth groove segment 72, the second oblique groove 31, the third oblique groove 41, the fourth oblique groove 42, and the second transverse groove 50, the groove width of each groove is set in a certain proportion to the pitch segment in which it is located, so as to avoid increasing the impact noise between the tire and the ground due to the single groove width of the groove. In addition, the disordered and mixed arrangement of the pitch segments can further disrupt the pattern cavity noise audio and improve the noise comfort.

[0121] In this embodiment, the plurality of second transverse grooves 50 of the fifth pattern include a plurality of transverse groove units sequentially distributed along the circumference of the radial tire, and each transverse groove unit includes three second transverse grooves 50 sequentially distributed and adjacent along the circumference of the radial tire. The three second transverse grooves 50 of each transverse groove unit are respectively and sequentially the third transverse groove 501, the fourth transverse groove 502 and the fifth transverse groove 503. There is a pitch unit between the third transverse grooves 501 of any two adjacent transverse groove units.

[0122] Specifically, the length of each second transverse groove 50 refers to the length along its extension direction. The length of the first transverse groove 20 refers to the length along its extension direction. In each transverse groove unit, the length of the fourth transverse groove 502 and the length of the fifth transverse groove 503 are both shorter than the length of the third transverse groove 501. The length of the fourth transverse groove 502 and the length of the fifth transverse groove 503 are both shorter than the length of the first transverse groove 20. By appropriately reducing the length of the fourth transverse groove 502 and the length of the fifth transverse groove 503, the relative rigidity of the outer tread block is improved.

[0123] In this embodiment, the extending directions of the first oblique groove 70, the second oblique groove 30, and the third oblique groove 40 are all the same or parallel. In this way, in a wetland environment, when water flows in the first oblique groove 70, the second oblique groove 30, and the third oblique groove 40, the groove edges and the steel sheet positions in the same direction are sharp, which is conducive to cutting the water film, avoiding poor drainage of the grooves, and improving the wet performance and handling stability of the tire.

[0124] In this embodiment, the fold line 80 includes a first straight line segment 81 ; each first transverse groove 20 is disposed on the first straight line segment 81 of the corresponding fold line 80 .

[0125] Optionally, the first straight segment 81 is parallel to the central axis of the radial tire.

[0126] In this embodiment, the fold line 80 further includes a second straight line segment 82 , a first end of the second straight line segment 82 is connected to one end of the first straight line segment 81 ; each first oblique groove 70 is disposed on the second straight line segment 82 of the corresponding fold line 80 .

[0127] Optionally, the second straight line segment 82 is arranged at an angle to the central axis of the radial tire, and the angle between the second straight line segment 82 and the central axis of the radial tire is 20 degrees to 30 degrees.

[0128] Optionally, the second straight line segment 82 of each fold line 80 is located on a preset plane of the corresponding first oblique groove 70 .

[0129] In this embodiment, the fold line 80 further includes a third straight line segment 83 , a first end of the third straight line segment 83 is connected to a second end of the second straight line segment 82 ; each second inclined groove 30 is disposed on the third straight line segment 83 of the corresponding fold line 80 .

[0130] Optionally, the third straight line segment 83 is arranged at an angle to the central axis of the radial tire, and the angle between the third straight line segment 83 and the central axis of the radial tire is 20 degrees to 30 degrees.

[0131] Optionally, the second straight line segment 82 and the third straight line segment 83 are located on the same straight line segment.

[0132] In this embodiment, the fold line 80 further includes a fourth straight line segment 84 , a first end of which is connected to a second end of the third straight line segment 83 ; each third inclined groove 40 is disposed on the fourth straight line segment 84 of the corresponding fold line 80 .

[0133] Optionally, the fourth straight line segment 84 is arranged at an angle to the central axis of the radial tire, and the angle between the fourth straight line segment 84 and the central axis of the radial tire is 20 degrees to 30 degrees.

[0134] Optionally, the fourth straight line segment 84 is parallel to the third straight line segment 83; the broken line 80 also includes a first connecting line segment 841 connected between the first end of the fourth straight line segment 84 and the second end of the third straight line segment 83, and the first end of the fourth straight line segment 84 and the second end of the third straight line segment 83 are connected by the first connecting line segment 841.

[0135] In this embodiment, the fold line 80 further includes a fifth straight line segment 85 , a first end of which is connected to a second end of the fourth straight line segment 84 ; each second transverse groove 50 is disposed on the fifth straight line segment 85 of the corresponding fold line 80 .

[0136] Optionally, the fifth straight line segment 85 is set at an angle to the central axis of the radial tire; the fifth straight line segment 85 is set at an angle to the fourth straight line segment 84; the broken line 80 also includes a second connecting line segment 851 connected between the first end of the fifth straight line segment 85 and the second end of the fourth straight line segment 84, and the first end of the fifth straight line segment 85 and the second end of the fourth straight line segment 84 are connected via the second connecting line segment 851.

[0137] Optionally, the angle between the fifth straight line segment 85 and the central axis of the radial tire is smaller than the angle between the fourth straight line segment 84 and the central axis of the radial tire.

[0138] Optionally, the fifth straight line segment 85 of each fold line 80 is located on the fourth groove side wall of the corresponding second transverse groove 50 .

[0139] Optionally, the first end of the fourth straight line segment 84 and the second end of the fifth straight line segment 85 are both located on the same side of the second end of the fourth straight line segment 84 , that is, the first end of the fourth straight line segment 84 and the second end of the fifth straight line segment 85 are both located on the same side of the first end of the fifth straight line segment 85 .

[0140] In this embodiment, the width direction of each tread portion is parallel to the axial direction of the radial tire; the ratio of the sum of the width of the second tread portion 62, the width of the third tread portion 63 and the width of the fourth tread portion 64 to the tire contact surface width T is 0.35 to 0.38. The ratio of the width of the second tread portion 62, the width of the third tread portion 63 and the width of the fourth tread portion 64 is 0.97:1.00:0.97.

[0141] In this embodiment, the width direction of each longitudinal groove is parallel to the axial direction of the radial tire; the ratio of the width of the first longitudinal groove 11, the width of the second longitudinal groove 12, the width of the third longitudinal groove 13 and the width of the fourth longitudinal groove 14 is 1.00:1.00:1.17:0.67; the ratio of the sum of the width of the third longitudinal groove 13 and the width of the fourth longitudinal groove 14 to the sum of the width of the first longitudinal groove 11 and the width of the second longitudinal groove 12 is 0.90 to 0.95.

[0142] Optionally, the ratio of the sum of the groove widths of the four longitudinal grooves to the tire's contact patch width T is 0.26. The wider longitudinal groove design is conducive to rapid drainage during tire driving and improves wet handling performance.

[0143] In this embodiment, the pattern contact ratio is 66% to 70%; the pattern contact ratio is the ratio of the actual pattern contact area to the total area within the pattern contact width T; within the pattern contact surface width T, after removing each longitudinal groove, each transverse groove, each oblique groove and each oblique groove, the sum of the areas of the remaining pattern areas is the actual pattern contact area.

[0144] The utility model also provides a radial tire, which comprises the above-mentioned pattern structure.

[0145] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0146] In the pattern structure of the radial tire of the present application: 1. The pattern structure adopts an asymmetric design; the inner pattern groove accounts for a large proportion and has a small ground contact rate, which improves the drainage performance in a wetland environment; the outer pattern groove accounts for a small proportion, has a relatively large ground contact rate, and has a large pattern block rigidity, which effectively provides the tire with braking and maneuverability on dry and wet roads. 2. The first transverse groove 20 and the second transverse groove 50 adopt a closed structure design and are not connected to the longitudinal groove to reduce pumping noise by limiting the circulation of lateral air. 3. Within the width T of the pattern contact surface, the width of each tread portion is optimized to ensure the stability of the vehicle when driving in a straight line, while improving the steering responsiveness of the tire at small corners. 4. The tread portion is designed with grooves and steel sheets at a certain angle, which can increase the ability of the tire to cut through the water film when driving in wetlands, improve the pattern drainage capacity, effectively improve the wet performance, and thus increase the safety performance. 5. The special groove design on the inside and outside can appropriately reduce the rigidity of the inner shoulder pattern block. 6. The ratio of the sum of the width of the third longitudinal groove 13 and the width of the fourth longitudinal groove 14 to the sum of the width of the first longitudinal groove 11 and the width of the second longitudinal groove 12 is controlled within a suitable ratio range. On the one hand, the steering responsiveness of the tire can be improved when the tire turns at a small angle; on the other hand, the rigidity of the inner and outer shoulder blocks can be balanced at a suitable differential level, the rigidity of the inner and outer shoulder blocks can be kept relatively balanced, and abnormal wear of the inner shoulder can be avoided, so that the overall wear of the tread is more uniform and the wear performance is improved. 7. The structural design of the middle pattern block can avoid the problem of the middle pattern block being concave during use due to the rigidity of the pattern block being less than the rigidity of the inner and outer shoulders, so that the middle pattern block can fully contact the ground, increase the friction with the road surface, avoid the hydroplaning phenomenon, and effectively enhance the wet and slippery and handling performance. 8. Reasonable pattern ground contact rate design can make each pattern block fully contact with the ground, and the pattern utilization rate is high. Combined with the design of the middle pattern block, the ground contact area can be increased, so that it can fully rub with the ground and improve wet handling performance. 9. When the pattern ground contact rate is constant, the more pitch segments there are, the smaller the width of a single pitch segment and a pattern groove, and the smaller the noise. Combined with the nonlinear proportion design of the small pitch width in each pitch segment, the pitch noise energy can be dispersed as much as possible over a wider frequency band through random and disordered arrangement. The reasonable staggered design of the middle and shoulder pattern blocks can further improve the noise comfort. 10. A specific noise reduction and drainage structure is designed in the longitudinal groove, which is conducive to disrupting the audio frequency of the cavity noise of the pattern longitudinal groove during tire driving, dispersing the sound wave frequency, and reducing the noise peak; by making the protrusion 92 have a certain width along the circumference of the radial tire, and making the width direction of the protrusion 92 parallel to or the same as the circumference of the radial tire, while reducing noise, it avoids hindering the flow of water in the longitudinal groove under wet road conditions; and because of the setting of the concave groove 91, the water capacity of the longitudinal groove is avoided to decrease due to the setting of the protrusion 92, which is conducive to drainage while effectively reducing noise.

[0147] The radial tire of the present application is a low-noise, anti-slip high-performance radial tire. The noise comfort and wet-slip performance are improved through the optimized design of the pattern structure to reduce the fatigue of the driver and passengers; and the safety performance and wear performance of the tire are improved, while taking into account the noise comfort and high wet-slip performance, and it is easy to achieve in terms of technology.

[0148] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0149] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0150] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A pattern structure of a radial tire, wherein four longitudinal grooves of the pattern structure divide the tread of the radial tire into a first tread portion (61), a second tread portion (62), a third tread portion (63), a fourth tread portion (64) and a fifth tread portion (65) which are arranged in sequence; the pattern structure comprises a first pattern arranged on the first tread portion (61), a second pattern arranged on the second tread portion (62), a third pattern arranged on the third tread portion (63), a fourth pattern arranged on the fourth tread portion (64), and a fifth pattern arranged on the fifth tread portion (65); the four longitudinal grooves comprise a first longitudinal groove (11), a second longitudinal groove (12), a third longitudinal groove (13) and a fourth longitudinal groove (14) which are arranged in sequence and at intervals along the axial direction of the radial tire; characterized in that The structures of the first pattern, the second pattern, the third pattern, the fourth pattern and the fifth pattern are all different; The first pattern comprises a plurality of first transverse grooves (20) spaced apart along the circumferential direction of the radial tire, and one end of each first transverse groove (20) facing the crown centerline is spaced apart from the first longitudinal groove (11); and / or The fifth pattern comprises a plurality of second transverse grooves (50) spaced apart along the circumferential direction of the radial tire, and one end of each second transverse groove (50) facing the crown centerline is spaced apart from the fourth longitudinal groove (14); and / or The second pattern comprises a plurality of first oblique grooves (70) spaced apart along the circumference of the radial tire, and both ends of each of the first oblique grooves (70) extend to the first longitudinal groove (11) and the second longitudinal groove (12), respectively; and / or The third pattern comprises a plurality of second oblique grooves (30) spaced apart along the circumference of the radial tire, and both ends of each second oblique groove (30) extend to the second longitudinal groove (12) and the third longitudinal groove (13), respectively; and / or The fourth pattern comprises a plurality of third oblique grooves (40) spaced apart along the circumference of the radial tire; two ends of a portion of the third oblique grooves (40) among the plurality of third oblique grooves (40) extend to the third longitudinal groove (13) and the fourth longitudinal groove (14) respectively; one end of a portion of the third oblique grooves (40) among the plurality of third oblique grooves (40) extends to the third longitudinal groove (13) or the fourth longitudinal groove (14), and the other end is spaced apart from the fourth longitudinal groove (14) or the third longitudinal groove (13).

2. The radial tire pattern structure according to claim 1, characterized in that: Along the circumferential direction of the radial tire, each of the first transverse grooves (20) has a first groove side wall and a second groove side wall that are arranged opposite to each other; the first pattern further comprises: a plurality of first grooves (21), the plurality of first grooves (21) being arranged in one-to-one correspondence with the plurality of first transverse grooves (20); the groove depth of each first groove (21) being less than the groove depth of the corresponding first transverse groove (20), and the groove bottom wall of each first groove (21) and the first groove side wall of the corresponding first transverse groove (20) forming a first step structure; and / or A plurality of second grooves (22), wherein the plurality of second grooves (22) are arranged in one-to-one correspondence with the plurality of first transverse grooves (20); the groove depth of each second groove (22) is less than the groove depth of the corresponding first transverse groove (20), and the groove bottom wall of each second groove (22) and the second groove side wall of the corresponding first transverse groove (20) form a second step structure.

3. The radial tire pattern structure according to claim 2, characterized in that: In a direction from the first tread portion (61) to the fifth tread portion (65), the first transverse groove (20) includes a first groove segment (201) and a second groove segment (202) connected to each other; The groove bottom wall of each first groove (21) and the first groove side wall of the first groove section (201) of the corresponding first transverse groove (20) form the first step structure; and / or The groove bottom wall of each second groove (22) and the second groove side wall of the first groove section (201) of the corresponding first transverse groove (20) form the second step structure.

4. The radial tire pattern structure according to claim 1, characterized in that: Along the circumferential direction of the radial tire, each of the second transverse grooves (50) has a third groove side wall and a fourth groove side wall that are arranged opposite to each other; the fifth pattern further includes: a plurality of third grooves (51), the plurality of third grooves (51) being arranged in one-to-one correspondence with the plurality of second transverse grooves (50); the groove depth of each of the third grooves (51) being less than the groove depth of the corresponding second transverse groove (50), and the groove bottom wall of each of the third grooves (51) and the third groove side wall of the corresponding second transverse groove (50) forming a third step structure; and / or A plurality of fourth grooves (52), wherein the plurality of fourth grooves (52) are arranged in one-to-one correspondence with the plurality of second transverse grooves (50); the groove depth of each of the fourth grooves (52) is less than the groove depth of the corresponding second transverse groove (50), and the groove bottom wall of each of the fourth grooves (52) and the fourth groove side wall of the corresponding second transverse groove (50) form a fourth step structure.

5. The radial tire pattern structure according to claim 1, characterized in that: The first oblique groove (70) comprises a third groove segment (71) and a fourth groove segment (72); the first end of the third groove segment (71) extends to the first longitudinal groove (11), the second end of the third groove segment (71) is connected to the first end of the fourth groove segment (72), and the second end of the fourth groove segment (72) extends to the second longitudinal groove (12); From the first end to the second end of the third groove segment (71), the groove width of the third groove segment (71) gradually increases; from the first end to the second end of the fourth groove segment (72), the groove width of the fourth groove segment (72) gradually decreases.

6. The radial tire pattern structure according to claim 5, characterized in that: Along the circumference of the radial tire, the third groove segment (71) has a fifth groove side wall and a sixth groove side wall that are arranged opposite to each other, and the fourth groove segment (72) has a seventh groove side wall and an eighth groove side wall that are arranged opposite to each other; the fifth groove side wall and the eighth groove side wall are located on the same preset plane, and the sixth groove side wall and the seventh groove side wall are respectively located on both sides of the preset plane.

7. The radial tire pattern structure according to claim 1, characterized in that: The second inclined groove (30) comprises a second inclined groove (31) and a first steel sheet groove (32), wherein the first end of the second inclined groove (31) extends to the second The second end of the second oblique groove (31) is connected to the first end of the first steel sheet groove (32), and the second end of the first steel sheet groove (32) extends to the third longitudinal groove (13).

8. The tread structure of a radial tire according to claim 1, characterized in that: The plurality of third oblique grooves (40) include a plurality of oblique groove units distributed in sequence along the circumferential direction of the radial tire, and each of the oblique groove units includes three third oblique grooves (40) adjacent to each other in sequence; the three third oblique grooves (40) of each of the oblique groove units are respectively and sequentially a third oblique groove (41), a fourth oblique groove (42) and a second steel sheet groove (43); the first end of the third oblique groove (41) extends to the third longitudinal groove (13), and the second end of the third oblique groove (41) is spaced apart from the fourth longitudinal groove (14); the first end of the fourth oblique groove (42) is spaced apart from the third longitudinal groove (13), and the second end of the third oblique groove (41) extends to the fourth longitudinal groove (14); the two ends of the second steel sheet groove (43) extend to the third longitudinal groove (13) and the fourth longitudinal groove (14), respectively.

9. The radial tire pattern structure according to claim 1, characterized in that: A plurality of fold lines (80) spaced apart along the circumference of the radial tire divide the tread of the radial tire into a plurality of pitch segments; the plurality of pitch segments include a plurality of pitch units sequentially distributed along the circumference of the radial tire, each of the pitch units includes three sequentially adjacent pitch segments; a plurality of first transverse grooves (20) of the first pattern are arranged in one-to-one correspondence with the plurality of fold lines (80), each of the first transverse grooves (20) being arranged on a corresponding fold line (80); a plurality of first oblique grooves (70) of the second pattern are arranged in one-to-one correspondence with the plurality of fold lines (80), each of the first oblique grooves (70) being arranged on a corresponding fold line (80); The plurality of second oblique grooves (30) of the third pattern are arranged in one-to-one correspondence with the plurality of fold lines (80), and each of the second oblique grooves (30) is arranged on the corresponding fold line (80); the plurality of third oblique grooves (40) of the fourth pattern are arranged in one-to-one correspondence with the plurality of fold lines (80), and each of the third oblique grooves (40) is arranged on the corresponding fold line (80); the plurality of second transverse grooves (50) of the fifth pattern are arranged in one-to-one correspondence with the plurality of fold lines (80), and each of the second transverse grooves (50) is arranged on the corresponding fold line (80); and / or A noise reduction structure (90) is provided in each of the longitudinal grooves, and the noise reduction structure (90) comprises a recessed groove (91) provided on the groove bottom wall of the longitudinal groove and a protruding portion (92) protruding from the groove bottom wall of the recessed groove (91); a protruding portion (93) is provided on the protruding side surface of the protruding portion (92).

10. A radial tire, characterized in that: The invention comprises the pattern structure as claimed in any one of claims 1 to 9.

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