Tire tread structure and tire with same

Abstract

The utility model provides a tire tread structure and a tire with the same, the tire tread structure comprises at least four longitudinal grooves, and the longitudinal grooves extend along the circumferential direction of the tire and are arranged at intervals along the width direction of the tire so as to divide a tread into tire shoulder pattern parts and a plurality of middle pattern parts positioned between two tire shoulder pattern parts; the longitudinal grooves adjacent to the tire shoulder pattern parts have the width W1, the longitudinal grooves located between every two adjacent middle pattern parts have the width W2, and the width W1 and the width W2 meet the condition that W1 is larger than or equal to 0.865 W2 and smaller than or equal to 0.869 W2; wherein the plurality of middle pattern parts comprise a central pattern part and a tire crown pattern part, and the width W3 of the tire shoulder pattern part, the width W4 of the central pattern part and the width W5 of the tire crown pattern part meet the following conditions: 1.3 W4 < = W3 < = 1.7 W4, and 1.3 W5 < = W3 < = 1.7 W5. The problem that a tire tread structure cannot give consideration to the travelled distance and the traveling noise of the electric vehicle is solved.

Description

Technical Field

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

[0002] At present, with the continuous development and progress of the electric vehicle industry, pure electric light trucks (light trucks) have gradually become popular in the market. For light trucks, their load-bearing performance requirements are greatly reduced compared to traditional fuel vehicles, but due to the electric drive, the cruising range of light trucks is often unsatisfactory.

[0003] However, the tire pattern structure of some light-duty trucks will only be improved on the basis of the original fuel vehicle tire tread structure, because the tire is actually the main energy-consuming component during the vehicle's movement (that is, the vehicle needs to rely on the friction between the tire and the driving surface to move), but the surface pattern structure design usually affects the overall performance of the tire. In the process of changing the original tire tread structure design to reduce tire energy consumption, it often affects other tire performance, especially the tire driving noise problem, which will seriously affect the user's driving experience. Utility Model Content

[0004] The main purpose of the utility model is to provide a tire tread structure and a tire having the same, so as to solve the problem that the tram tire tread structure in the prior art cannot take into account both the tram's driving mileage and driving noise.

[0005] In order to achieve the above-mentioned object, according to one aspect of the utility model, a tire tread structure is provided, comprising: at least four longitudinal grooves, each of which extends along the circumference of the tire, and at least four longitudinal grooves are arranged at intervals along the width direction of the tire to separate the tread into a shoulder pattern portion and a plurality of intermediate pattern portions located between two shoulder pattern portions; the longitudinal groove adjacent to the shoulder pattern portion has a width W1, the longitudinal groove located between two adjacent intermediate pattern portions has a width W2, and the width W1 and the width W2 satisfy: 0.865W2≤W1≤0.869W2; wherein, the multiple intermediate pattern portions include a center pattern portion and a crown pattern portion, the center pattern portion coincides with at least part of the center plane S of the tire, the crown pattern portion is located between the shoulder pattern portion and the center pattern portion, and the width W3 of the shoulder pattern portion, the width W4 of the center pattern portion and the width W5 of the crown pattern portion satisfy: 1.3W4≤W3≤1.7W4, 1.3W5≤W3≤1.7W5.

[0006] Furthermore, the tire tread structure further includes: a first recessed portion, which is arranged on a single-side groove wall of at least one longitudinal groove.

[0007] Furthermore, there are multiple first recesses, which are spaced apart along the circumference of the tire; wherein, there is a preset distance H between the groove wall between two adjacent first recesses and the groove bottom of any first recess, and the preset distance H satisfies: 0.6mm≤H≤1mm.

[0008] Furthermore, an inner wall of the first recess and an adjacent groove wall form an offset portion, and there are multiple offset portions, including a first offset portion, a second offset portion, and a third offset portion. Along the circumferential direction of the tire, a length L1 of the first offset portion, a length L2 of the second offset portion, and a length L3 of the third offset portion satisfy: 37.3L1≤44L3≤37.5L1, 40.5L2≤44L3≤40.7L2.

[0009] Furthermore, the tire tread structure also includes a sheet-like structure, which is arranged in the crown pattern portion, and the two ends of the sheet-like structure respectively extend into two longitudinal grooves adjacent to the crown pattern portion; and / or, the sheet-like structure is arranged in the center pattern portion, and the two ends of the sheet-like structure respectively extend into two longitudinal grooves adjacent to the center pattern portion.

[0010] Furthermore, the sheet-like structure arranged on the crown pattern portion is a first sheet-like structure; the first sheet-like structure includes a first sub-sheet-like structure, a second sub-sheet-like structure and a third sub-sheet-like structure which are interconnected, the second sub-sheet-like structure is located between the first sub-sheet-like structure and the third sub-sheet-like structure, and in two longitudinal grooves adjacent to the crown pattern portion, one end of the first sub-sheet-like structure away from the second sub-sheet-like structure extends into one longitudinal groove, and one end of the third sub-sheet-like structure away from the second sub-sheet-like structure extends into the other longitudinal groove; wherein, the first sub-sheet-like structure and the second sub-sheet-like structure are arranged at a first angle A1, and the second sub-sheet-like structure and the third sub-sheet-like structure are arranged at a second angle A2, and the first angle A1 and the second angle A2 satisfy: A1≠A2; and / or, the length L4 of the first sub-sheet-like structure and the length L5 of the third sub-sheet-like structure satisfy: L4≠L5.

[0011] Furthermore, the sheet structure arranged on the central tread portion is a second sheet structure; the second sheet structure includes a fourth sub-sheet structure, a fifth sub-sheet structure and a sixth sub-sheet structure which are interconnected, the fifth sub-sheet structure is located between the fourth sub-sheet structure and the sixth sub-sheet structure, and in two longitudinal grooves adjacent to the central tread portion, one end of the fourth sub-sheet structure away from the fifth sub-sheet structure extends into one longitudinal groove, and one end of the sixth sub-sheet structure away from the fifth sub-sheet structure extends into the other longitudinal groove; wherein, the fourth sub-sheet structure is arranged at a third angle A3 with the fifth sub-sheet structure, and the sixth sub-sheet structure is arranged at a fourth angle A4 with the fifth sub-sheet structure, the third angle A3 and the fourth angle A4 satisfy: A3=A4, and the length L6 of the fourth sub-sheet structure and the length L7 of the sixth sub-sheet structure satisfy: L6=L7.

[0012] Furthermore, there are multiple second sheet structures, and the multiple second sheet structures are arranged at intervals along the circumference of the tire. The tire tread structure also includes: multiple second recesses, which are arranged at intervals along the circumference of the tire on the shoulder pattern portion, one end of the second recess extends to the longitudinal groove located on one side of the shoulder pattern portion, and the other end of the second recess has a preset distance from the shoulder of the tire; multiple third recesses, which are arranged at intervals along the circumference of the tire on the crown pattern portion, in two longitudinal grooves adjacent to the crown pattern portion, one end of the third recess extends to one longitudinal groove, and the other end of the third recess has a preset distance from the other longitudinal groove; wherein, the multiple third recesses extending to the longitudinal groove adjacent to the shoulder pattern portion are arranged one-to-one with the multiple second recesses, and the multiple third recesses extending to the longitudinal groove adjacent to the center pattern portion are arranged one-to-one with the multiple second sheet structures.

[0013] Furthermore, the groove bottom of each longitudinal groove is an arc-shaped surface, and a first recess is provided on the single-side groove wall of each longitudinal groove; wherein, the longitudinal groove adjacent to the shoulder pattern portion is the first longitudinal groove, and the longitudinal groove located between two adjacent middle pattern portions is the second longitudinal groove; a fifth angle A5 is set between the bottom wall of the first recess of the first longitudinal groove and the groove wall on the other side, and the fifth angle A5 satisfies: 32°≤A5≤35°, a sixth angle A6 is set between the groove wall of the first longitudinal groove located between two adjacent first recesses and the groove wall on the other side, and the sixth angle A6 satisfies: 28°≤A6≤30°, a seventh angle A7 is set between the bottom wall of the first recess of the second longitudinal groove and the groove wall on the other side, and the seventh angle A7 satisfies: 26°≤A7≤28°, a eighth angle A8 is set between the groove wall of the second longitudinal groove located between two adjacent first recesses and the groove wall on the other side, and the eighth angle A8 satisfies: 23°≤A8≤25°.

[0014] According to another aspect of the utility model, a tire is provided, and the tire comprises the tire tread structure described above.

[0015] According to the technical solution of the utility model, at least four longitudinal grooves of the tire tread structure extend along the circumference of the tire, and at least four longitudinal grooves are arranged at intervals along the width direction of the tire to separate the tread into a shoulder pattern portion and a plurality of intermediate pattern portions located between two shoulder pattern portions, and the longitudinal groove adjacent to the shoulder pattern portion has a width W1, and the longitudinal groove located between two adjacent intermediate pattern portions has a width W2, and the width W1 and the width W2 satisfy: 0.865W2≤W1≤0.869W2. Among them, the plurality of intermediate pattern portions include a center pattern portion and a crown pattern portion, the center pattern portion coincides with at least part of the center plane S of the tire, the crown pattern portion is located between the shoulder pattern portion and the center pattern portion, and the width W3 of the shoulder pattern portion, the width W4 of the center pattern portion, and the width W5 of the crown pattern portion satisfy: 1.3W4≤W3≤1.7W4, 1.3W5≤W3≤1.7W5. In this way, the setting mode of separating the tread by at least four longitudinal grooves enables the tire tread structure to have a shoulder pattern portion, a crown pattern portion and a center pattern portion at the same time, and the width ratio relationship between the longitudinal grooves, the shoulder pattern portion, the center pattern portion and the crown pattern portion, on the one hand, can increase the rigidity of each pattern portion to reduce the energy loss and the rolling resistance of the tire caused by pattern deformation during tire driving, thereby increasing the mileage of the tram; on the other hand, the vibration frequencies of the shoulder pattern portions, the crown pattern portions and the center pattern portions of different widths during the rolling process of the tire are difficult to reach a consistency, thereby reducing the phenomenon of rolling noise resonance of the tire, thereby solving the problem that the tread structure of the tram tire in the prior art cannot take into account both the mileage and driving noise of the tram, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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:

[0017] Figure 1 A partial front view of an embodiment of a tire tread structure according to the present utility model is shown;

[0018] Figure 2 Shows Figure 1 An enlarged schematic diagram of the tire tread structure at point B;

[0019] Figure 3 Shows Figure 2 Schematic cross-sectional view at CC in FIG.

[0020] Figure 4 Shows Figure 2 Schematic diagram of the cross section at DD in FIG.

[0021] Figure 5 Shows Figure 1 Schematic cross-sectional view of EE in FIG.

[0022] Figure 6 Shows Figure 1 Schematic cross-sectional view at FF in FIG.

[0023] Figure 7 Shows Figure 1 A front view of a first sheet structure of a tire tread structure;

[0024] Figure 8 Shows Figure 1 A front view of a second sheet structure of a tire tread structure.

[0025] The above drawings include the following reference numerals:

[0026] 10. Longitudinal groove; 11. First longitudinal groove; 12. Second longitudinal groove; 20. Shoulder pattern portion; 30. Center pattern portion; 40. Crown pattern portion; 50. First recess; 60. Offset portion; 70. First sheet structure; 71. First sub-sheet structure; 72. Second sub-sheet structure; 73. Third sub-sheet structure; 80. Second sheet structure; 81. Fourth sub-sheet structure; 82. Fifth sub-sheet structure; 83. Sixth sub-sheet structure; 90. Second recess; 100. Third recess; 110. Decorative groove. DETAILED DESCRIPTION

[0027] 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.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0029] In the present invention, unless otherwise specified, directional words such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0030] In order to solve the problem that the tram tire tread structure in the prior art cannot take into account both the tram's mileage and driving noise, the present application provides a tire tread structure and a tire having the same.

[0031] like Figure 1 As shown, the tire tread structure includes at least four longitudinal grooves 10, each of which extends along the circumference of the tire, and at least four longitudinal grooves 10 are arranged at intervals along the width direction of the tire to divide the tread into a shoulder pattern portion 20 and a plurality of middle pattern portions located between two shoulder pattern portions 20. The longitudinal groove 10 adjacent to the shoulder pattern portion 20 has a width W1, and the longitudinal groove 10 located between two adjacent middle pattern portions has a width W2, and the width W1 and the width W2 satisfy: 0.865W2≤W1≤0.869W2. Among them, the multiple intermediate pattern portions include a center pattern portion 30 and a crown pattern portion 40, the center pattern portion 30 coincides with at least part of the center plane S of the tire, the crown pattern portion 40 is located between the shoulder pattern portion 20 and the center pattern portion 30, and the width W3 of the shoulder pattern portion 20, the width W4 of the center pattern portion 30 and the width W5 of the crown pattern portion 40 satisfy: 1.3W4≤W3≤1.7W4, 1.3W5≤W3≤1.7W5.

[0032] By applying the technical solution of this embodiment, at least four longitudinal grooves 10 of the tire tread structure extend along the circumference of the tire, and at least four longitudinal grooves 10 are arranged at intervals along the width direction of the tire to separate the tread into a shoulder pattern portion 20 and a plurality of intermediate pattern portions located between the two shoulder pattern portions. The longitudinal groove 10 adjacent to the shoulder pattern portion 20 has a width W1, and the longitudinal groove 10 located between two adjacent intermediate pattern portions has a width W2, and the width W1 and the width W2 satisfy the following condition: 0.865W2≤W1≤0.869W2. Among them, the multiple intermediate pattern portions include a center pattern portion 30 and a crown pattern portion 40, the center pattern portion 30 coincides with at least part of the center plane S of the tire, the crown pattern portion 40 is located between the shoulder pattern portion 20 and the center pattern portion 30, and the width W3 of the shoulder pattern portion 20, the width W4 of the center pattern portion 30 and the width W5 of the crown pattern portion 40 satisfy: 1.3W4≤W3≤1.7W4, 1.3W5≤W3≤1.7W5. In this way, the arrangement of at least four longitudinal grooves 10 to separate the tread allows the tire tread structure to simultaneously have a shoulder pattern portion 20, a crown pattern portion 40 and a center pattern portion 30, and the width ratio relationship between the longitudinal grooves 10, the shoulder pattern portion 20, the center pattern portion 30 and the crown pattern portion 40, on the one hand, can increase the rigidity of each pattern portion to reduce the energy loss and the rolling resistance of the tire caused by pattern deformation during tire driving, thereby increasing the mileage of the tram; on the other hand, the vibration frequencies of the shoulder pattern portions 20, the crown pattern portion 40 and the center pattern portion 30 of different widths during the rolling process of the tire are difficult to reach a consistent level, thereby reducing the phenomenon of rolling noise resonance in the tire, thereby solving the problem in the prior art that the tread structure of the tram tire cannot take into account both the mileage and driving noise of the tram, thereby improving the user experience.

[0033] In this embodiment, the number of longitudinal grooves 10 is four.

[0034] In this embodiment, the center pattern portions 30 are symmetrically arranged with respect to the center plane S of the tire.

[0035] In this embodiment, the width W1 and the width W2 of the longitudinal groove 10 satisfy: W1 = 0.867W2, so as to ensure that the proportional relationship between the width W1 and the width W2 of the longitudinal groove 10 is relatively appropriate, further reducing the rolling resistance of the tire.

[0036] Specifically, when the tire is running on a wet road, the longitudinal groove 10 can discharge the liquid between the tire tread and the running surface. The above-mentioned setting of width W1 and width W2 can also take into account the drainage capacity of the longitudinal groove 10, so that the rolling resistance and drainage capacity of the tire are balanced.

[0037] In this embodiment, the width W3 of the shoulder pattern portion 20, the width W4 of the center pattern portion 30 and the width W5 of the crown pattern portion 40 satisfy: W3=1.5W4, W3=1.5W5, so as to ensure that the proportional relationship between the width W3 of the shoulder pattern portion 20, the width W4 of the center pattern portion 30 and the width W5 of the crown pattern portion 40 is relatively appropriate, thereby further reducing the rolling resistance of the tire and the driving noise of the tire.

[0038] In this embodiment, the shoulder pattern portion 20 is a circumferentially continuous pattern block. In this way, the tire shoulder portion with a closed design makes the material of the tire shoulder portion more evenly stressed, thereby improving the tire's anti-eccentric wear capability.

[0039] like Figure 1 As shown, the tire tread structure further includes a first recess 50, which is disposed on a single side groove wall of at least one longitudinal groove 10. In this way, the two groove walls of the longitudinal groove 10 are asymmetrically disposed to effectively reduce the tire running noise while improving the driving force of the tire.

[0040] In this embodiment, a first recess 50 is disposed on a single side wall of each of the four longitudinal grooves 10 .

[0041] like Figure 1 and Figure 2 As shown, there are multiple first recesses 50, and the multiple first recesses 50 are arranged at intervals along the circumference of the tire. Among them, there is a preset distance H between the groove wall between two adjacent first recesses 50 and the groove bottom of any first recess 50, and the preset distance H satisfies: 0.6mm≤H≤1mm. In this way, the above-mentioned arrangement of multiple first recesses 50 makes the single-side groove wall of the longitudinal groove 10 a zigzag design, so as to further reduce the noise when the tire is running and improve the driving force of the tire. At the same time, the above-mentioned arrangement makes the value of the preset distance H more flexible and diverse, so as to adapt to different working conditions and usage requirements, and also improves the processing flexibility of the staff.

[0042] like Figure 1As shown, the inner wall of the first recess 50 and the groove wall adjacent thereto form an offset portion 60, and there are multiple offset portions 60, including a first offset portion 60, a second offset portion 60 and a third offset portion 60. Along the circumferential direction of the tire, the length L1 of the first offset portion 60, the length L2 of the second offset portion 60 and the length L3 of the third offset portion 60 satisfy: 37.3L1≤44L3≤37.5L1, 40.5L2≤44L3≤40.7L2. In this way, the above-mentioned setting of the offset portion 60 enables the single-side groove wall of the longitudinal groove 10 to have three length ratio settings in the circumferential direction of the tire, so that the groove wall structure of the longitudinal groove 10 is more disordered and messy, thereby reducing the probability of tire rolling noise resonance and further reducing the noise when the tire is running. At the same time, the above-mentioned setting can also further improve the driving force of the tire.

[0043] Specifically, the rolling noise energy of the tire will actually be continuously reflected and transmitted in the longitudinal groove 10. The first recess 50 of the offset portion 60 itself can increase the disorder of the noise during the reflection process, and the further limitation of the three lengths can further increase the disorder of the noise during the reflection process, thereby minimizing the probability of noise resonance during the rolling process of the tire.

[0044] In this embodiment, the length L1 of the first offset portion 60, the length L2 of the second offset portion 60 and the length L3 of the third offset portion 60 satisfy L1:L2:L3=37.3:40.5:44, so as to ensure that the three width ratios are more appropriate, further reducing the driving noise of the tire and improving the driving force of the tire.

[0045] like Figure 1 As shown, the tire tread structure also includes a sheet structure, which is arranged in the crown pattern portion 40, and the two ends of the sheet structure extend into the two longitudinal grooves 10 adjacent to the crown pattern portion 40 respectively; and / or, the sheet structure is arranged in the center pattern portion 30, and the two ends of the sheet structure extend into the two longitudinal grooves 10 adjacent to the center pattern portion 30 respectively. In this way, the sheet structure can not only improve the ability of the tire to cut through the water film (that is, when the tire is running on a wet road, the sheet structure breaks the water film between the tire tread and the driving surface), thereby improving the wet handling of the tire, but also increase the rigidity of the crown pattern portion 40 and the center pattern portion 30, thereby improving the overall rigidity of the tire tread structure. At the same time, the above-mentioned setting makes the setting position of the sheet structure more flexible and diverse to adapt to different working conditions and usage requirements, and also improves the processing flexibility of the staff.

[0046] like Figure 1As shown, the sheet structure disposed on the crown pattern portion 40 is a first sheet structure 70, the first sheet structure 70 includes a first sub-sheet structure 71, a second sub-sheet structure 72 and a third sub-sheet structure 73 which are connected to each other, the second sub-sheet structure 72 is located between the first sub-sheet structure 71 and the third sub-sheet structure 73, in two longitudinal grooves 10 adjacent to the crown pattern portion 40, one end of the first sub-sheet structure 71 away from the second sub-sheet structure 72 extends into one longitudinal groove 10, and one end of the third sub-sheet structure 73 away from the second sub-sheet structure 72 extends into the other longitudinal groove 10. Among them, the first sub-sheet structure 71 and the second sub-sheet structure 72 are arranged at a first angle A1, the second sub-sheet structure 72 and the third sub-sheet structure 73 are arranged at a second angle A2, and the first angle A1 and the second angle A2 satisfy: A1≠A2. And / or, the length L4 of the first sub-sheet structure 71 and the length L5 of the third sub-sheet structure 73 satisfy: L4≠L5. In this way, the above arrangement of the first sub-sheet structure 71, the second sub-sheet structure 72 and the third sub-sheet structure 73 makes the first sheet structure 70 arranged on the crown pattern portion 40 a non-centrosymmetric structure as a whole, so as to further enhance the ability of the first sheet structure 70 to cut through the water film, thereby enhancing the anti-skid performance of the tire. The above arrangement of the first sheet structure 70 can also effectively absorb the vibration wave energy generated when the tire rolls, further reducing the noise when the tire is running.

[0047] In this embodiment, the decorative groove 110 is arranged at the end of the first sub-sheet structure 71 or the third sub-sheet structure 73. In two adjacent first sheet structures 70, one decorative groove 110 is arranged on the first sub-sheet structure 71 of one first sheet structure 70, and the other decorative groove 110 is arranged on the third sub-sheet structure 73 of the other first sheet structure 70. Moreover, along the circumference of the tire, the two decorative grooves 110 are respectively located on different sides of the first sheet structure 70.

[0048] In this embodiment, the first sheet structure 70 is a steel sheet.

[0049] like Figure 7 As shown, the first sheet structure 70 has two protrusions, so that the depth of the steel sheet groove corresponding to the first sheet structure 70 is designed to be deepened, which can further reduce the noise of the tire when running and further improve the tire's anti-skid ability.

[0050] like Figure 1As shown, the sheet structure arranged on the central tread portion 30 is a second sheet structure 80, and the second sheet structure 80 includes a fourth sub-sheet structure 81, a fifth sub-sheet structure 82 and a sixth sub-sheet structure 83 which are connected to each other, and the fifth sub-sheet structure 82 is located between the fourth sub-sheet structure 81 and the sixth sub-sheet structure 83. In the two longitudinal grooves 10 adjacent to the central tread portion 30, one end of the fourth sub-sheet structure 81 away from the fifth sub-sheet structure 82 extends into one longitudinal groove 10, and one end of the sixth sub-sheet structure 83 away from the fifth sub-sheet structure 82 extends into the other longitudinal groove 10. Among them, the fourth sub-sheet structure 81 and the fifth sub-sheet structure 82 are arranged at a third angle A3, the sixth sub-sheet structure 83 and the fifth sub-sheet structure 82 are arranged at a fourth angle A4, the third angle A3 and the fourth angle A4 satisfy: A3 = A4, and the length L6 of the fourth sub-sheet structure 81 and the length L7 of the sixth sub-sheet structure 83 satisfy: L6 = L7. In this way, the above arrangement of the fourth sub-sheet structure 81, the fifth sub-sheet structure 82 and the sixth sub-sheet structure 83 makes the second sheet structure 80 arranged on the central tread portion 30 a central symmetrical structure as a whole, while further improving the ability of the second sheet structure 80 to cut the water film to improve the anti-skid performance of the tire, so that the structure of the second sheet structure 80 can adapt to the contact state between the central tread portion 30 and the driving surface during the rolling process of the tire, thereby improving the straight-line driving ability of the tire.

[0051] In this embodiment, the decorative groove 110 is also set at the end of the fourth sub-sheet structure 81 or the sixth sub-sheet structure 83. In two adjacent second sheet structures 80, one decorative groove 110 is set on the fourth sub-sheet structure 81 of one second sheet structure 80, and the other decorative groove 110 is set on the sixth sub-sheet structure 83 of the other second sheet structure 80, and along the circumference of the tire, the two decorative grooves 110 are respectively located on different sides of the second sheet structure 80.

[0052] like Figure 8 As shown, the second sheet structure 80 has three protrusions, so that the depth of the steel sheet groove corresponding to the second sheet structure 80 is designed to be deepened, which can further reduce the noise of the tire when running and further improve the tire's anti-skid ability.

[0053] like Figure 1As shown, there are multiple second sheet structures 80, and the multiple second sheet structures 80 are arranged at intervals along the circumference of the tire. The tire tread structure also includes multiple second recesses 90 and multiple third recesses 100. Multiple second recesses 90 are arranged at intervals along the circumference of the tire on the shoulder pattern portion 20, one end of the second recess 90 extends to the longitudinal groove 10 located on one side of the shoulder pattern portion 20, and the other end of the second recess 90 is at a preset distance from the shoulder of the tire. Multiple third recesses 100 are arranged at intervals along the circumference of the tire on the crown pattern portion 40, and in two longitudinal grooves 10 adjacent to the crown pattern portion 40, one end of the third recess 100 extends to one longitudinal groove 10, and the other end of the third recess 100 is at a preset distance from the other longitudinal groove 10. Among them, the plurality of third recesses 100 extending to the longitudinal grooves 10 adjacent to the shoulder pattern portion 20 are arranged in one-to-one correspondence with the plurality of second recesses 90, and the plurality of third recesses 100 extending to the longitudinal grooves 10 adjacent to the center pattern portion 30 are arranged in one-to-one correspondence with the plurality of second sheet structures 80. In this way, the above-mentioned arrangement of the second recesses 90 and the third recesses 100 can further enhance the water film cutting capabilities of the crown pattern portion 40 and the shoulder pattern portion 20, respectively, so as to further enhance the anti-slip capability of the tire.

[0054] In this embodiment, the third recessed portion 100 extending to the longitudinal groove 10 adjacent to the shoulder pattern portion 20 is symmetrically arranged with the second recessed portion 90 arranged corresponding thereto.

[0055] In this embodiment, the plurality of third recesses 100 extending to the longitudinal grooves 10 adjacent to the shoulder pattern portion 20 and the plurality of third recesses 100 extending to the longitudinal grooves 10 adjacent to the center pattern portion 30 are staggered in the circumferential direction of the tire.

[0056] In this embodiment, the second recessed portion 90 and the third recessed portion 100 are actually sipes disposed on the tire tread.

[0057] like Figure 1 and Figure 6As shown, the bottom of each longitudinal groove 10 is an arc surface, and a first concave portion 50 is provided on the single-side groove wall of each longitudinal groove 10. Among them, the longitudinal groove 10 adjacent to the shoulder pattern portion 20 is a first longitudinal groove 11, and the longitudinal groove 10 located between two adjacent middle pattern portions is a second longitudinal groove 12. A fifth angle A5 is formed between the bottom wall of the first recess 50 of the first longitudinal groove 11 and the groove wall on the other side, and the fifth angle A5 satisfies: 32°≤A5≤35°. A sixth angle A6 is formed between the groove wall between two adjacent first recesses 50 of the first longitudinal groove 11 and the groove wall on the other side, and the sixth angle A6 satisfies: 28°≤A6≤30°. A seventh angle A7 is formed between the bottom wall of the first recess 50 of the second longitudinal groove 12 and the groove wall on the other side, and the seventh angle A7 satisfies: 26°≤A7≤28°. An eighth angle A8 is formed between the groove wall between two adjacent first recesses 50 of the second longitudinal groove 12 and the groove wall on the other side, and the eighth angle A8 satisfies: 23°≤A8≤25°. In this way, since the bottom of each longitudinal groove 10 is uniformly arc-shaped and the groove wall of each longitudinal groove 10 is set at the above-mentioned angle, the force on the groove wall of the longitudinal groove 10 varies (unevenly) during the driving of the tire, which is more conducive to the discharge of stones, thereby improving the stone discharge performance of the tire.

[0058] In this embodiment, the tire tread structure is overall symmetrical about the center plane S, that is, after the tire tread structure on any one side of the center plane S is rotated 180°, the tire tread structure on the other side of the center plane S can be obtained.

[0059] The present application also provides a tire (not shown), which includes the tire tread structure described above.

[0060] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0061] At least four longitudinal grooves of the tire tread structure extend along the circumference of the tire, and at least four longitudinal grooves are arranged at intervals along the width direction of the tire to separate the tread into a shoulder pattern portion and a plurality of intermediate pattern portions located between two shoulder pattern portions, the longitudinal groove adjacent to the shoulder pattern portion has a width W1, and the longitudinal groove located between two adjacent intermediate pattern portions has a width W2, and the width W1 and the width W2 satisfy: 0.865W2≤W1≤0.869W2. Among them, the plurality of intermediate pattern portions include a center pattern portion and a crown pattern portion, the center pattern portion coincides with at least part of the center plane S of the tire, the crown pattern portion is located between the shoulder pattern portion and the center pattern portion, and the width W3 of the shoulder pattern portion, the width W4 of the center pattern portion, and the width W5 of the crown pattern portion satisfy: 1.3W4≤W3≤1.7W4, 1.3W5≤W3≤1.7W5. In this way, the setting mode of separating the tread by at least four longitudinal grooves enables the tire tread structure to have a shoulder pattern portion, a crown pattern portion and a center pattern portion at the same time, and the width ratio relationship between the longitudinal grooves, the shoulder pattern portion, the center pattern portion and the crown pattern portion, on the one hand, can increase the rigidity of each pattern portion to reduce the energy loss and the rolling resistance of the tire caused by pattern deformation during tire driving, thereby increasing the mileage of the tram; on the other hand, the vibration frequencies of the shoulder pattern portions, the crown pattern portions and the center pattern portions of different widths during the rolling process of the tire are difficult to reach a consistency, thereby reducing the phenomenon of rolling noise resonance of the tire, thereby solving the problem that the tread structure of the tram tire in the prior art cannot take into account both the mileage and driving noise of the tram, and improving the user experience.

[0062] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0063] 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.

[0064] 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 numbers used in this way can be interchanged 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.

[0065] 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 tire tread structure, characterized in that: include: At least four longitudinal grooves (10), each of the longitudinal grooves (10) extending along the circumference of the tire, and at least four of the longitudinal grooves (10) being arranged at intervals along the width direction of the tire to divide the tread into a shoulder pattern portion (20) and a plurality of intermediate pattern portions located between the two shoulder pattern portions (20); The longitudinal groove (10) adjacent to the shoulder pattern portion (20) has a width W1, and the longitudinal groove (10) located between two adjacent middle pattern portions has a width W2, and the width W1 and the width W2 satisfy the following relationship: 0.865W2≤W1≤0.869W2; The plurality of intermediate tread portions include a central tread portion (30) and a crown tread portion (40), the central tread portion (30) coincides with at least a portion of a center plane S of the tire, the crown tread portion (40) is located between the shoulder tread portion (20) and the central tread portion (30), and the width W3 of the shoulder tread portion (20), the width W4 of the central tread portion (30), and the width W5 of the crown tread portion (40) satisfy the following conditions: 1.3W4≤W3≤1.7W4, 1.3W5≤W3≤1.7W5.

2. The tire tread structure according to claim 1, characterized in that: The tire tread structure further comprises: The first recess (50) is arranged on a single-side groove wall of at least one of the longitudinal grooves (10).

3. The tire tread structure according to claim 2, characterized in that: There are a plurality of the first recesses (50), and the plurality of the first recesses (50) are arranged at intervals along the circumference of the tire; wherein a preset distance H is provided between a groove wall between two adjacent first recesses (50) and a groove bottom of any one of the first recesses (50), and the preset distance H satisfies: 0.6 mm ≤ H ≤ 1 mm.

4. The tire tread structure according to claim 2, characterized in that: An offset portion (60) is formed between the inner wall of the first recess (50) and the groove wall adjacent thereto. There are a plurality of offset portions (60), including a first offset portion (60), a second offset portion (60) and a third offset portion (60). Along the circumferential direction of the tire, a length L1 of the first offset portion (60), a length L2 of the second offset portion (60) and a length L3 of the third offset portion (60) satisfy the following conditions: 37.3L1≤44L3≤37.5L1, 40.5L2≤44L3≤40.7L2.

5. The tire tread structure according to claim 1, characterized in that: The tire tread structure also includes a sheet structure, The sheet-like structure is arranged in the crown pattern portion (40), and two ends of the sheet-like structure extend into two longitudinal grooves (10) adjacent to the crown pattern portion (40) respectively; and / or, The sheet-like structure is arranged in the central tread portion (30), and two ends of the sheet-like structure extend into two longitudinal grooves (10) adjacent to the central tread portion (30) respectively.

6. The tire tread structure according to claim 1, characterized in that: The sheet-like structure arranged on the crown pattern portion (40) is a first sheet-like structure (70); The first sheet-like structure (70) comprises a first sub-sheet-like structure (71), a second sub-sheet-like structure (72) and a third sub-sheet-like structure (73) which are connected to each other, the second sub-sheet-like structure (72) is located between the first sub-sheet-like structure (71) and the third sub-sheet-like structure (73), and in two longitudinal grooves (10) adjacent to the crown pattern portion (40), one end of the first sub-sheet-like structure (71) away from the second sub-sheet-like structure (72) extends into one longitudinal groove (10), and one end of the third sub-sheet-like structure (73) away from the second sub-sheet-like structure (72) extends into the other longitudinal groove (10); The first sub-sheet structure (71) and the second sub-sheet structure (72) are arranged at a first angle A1, the second sub-sheet structure (72) and the third sub-sheet structure (73) are arranged at a second angle A2, the first angle A1 and the second angle A2 satisfy: A1≠A2; and / or the length L4 of the first sub-sheet structure (71) and the length L5 of the third sub-sheet structure (73) satisfy: L4≠L5.

7. The tire tread structure according to claim 6, characterized in that: The sheet-like structure arranged on the central pattern portion (30) is a second sheet-like structure (80); The second sheet-like structure (80) comprises a fourth sub-sheet-like structure (81), a fifth sub-sheet-like structure (82) and a sixth sub-sheet-like structure (83) which are connected to each other, the fifth sub-sheet-like structure (82) being located between the fourth sub-sheet-like structure (81) and the sixth sub-sheet-like structure (83), and in two of the longitudinal grooves (10) adjacent to the central tread portion (30), an end of the fourth sub-sheet-like structure (81) away from the fifth sub-sheet-like structure (82) extends into one longitudinal groove (10), and an end of the sixth sub-sheet-like structure (83) away from the fifth sub-sheet-like structure (82) extends into the other longitudinal groove (10); The fourth sub-sheet structure (81) and the fifth sub-sheet structure (82) are arranged at a third angle A3, the sixth sub-sheet structure (83) and the fifth sub-sheet structure (82) are arranged at a fourth angle A4, the third angle A3 and the fourth angle A4 satisfy: A3=A4, and the length L6 of the fourth sub-sheet structure (81) and the length L7 of the sixth sub-sheet structure (83) satisfy: L6=L7.

8. The tire tread structure according to claim 7, characterized in that: The second sheet-like structure (80) is in plurality, and the plurality of second sheet-like structures (80) are arranged at intervals along the circumference of the tire, and the tire tread structure further comprises: A plurality of second recesses (90) are arranged on the shoulder pattern portion (20) at intervals along the circumferential direction of the tire, one end of the second recess (90) extends to the longitudinal groove (10) located on one side of the shoulder pattern portion (20), and the other end of the second recess (90) is at a preset distance from the shoulder of the tire; A plurality of third recesses (100) are arranged on the crown pattern portion (40) at intervals along the circumferential direction of the tire, and in two longitudinal grooves (10) adjacent to the crown pattern portion (40), one end of the third recess (100) extends to one of the longitudinal grooves (10), and the other end of the third recess (100) has a preset distance from the other longitudinal groove (10); Among them, a plurality of third recesses (100) extending to the longitudinal groove (10) adjacent to the shoulder pattern portion (20) are arranged in a one-to-one correspondence with a plurality of second recesses (90), and a plurality of third recesses (100) extending to the longitudinal groove (10) adjacent to the center pattern portion (30) are arranged in a one-to-one correspondence with a plurality of second sheet structures (80).

9. The tire tread structure according to claim 2, characterized in that: The bottom of each longitudinal groove (10) is an arc-shaped surface, and a first recess (50) is provided on a single-side groove wall of each longitudinal groove (10); Wherein, the longitudinal groove (10) adjacent to the shoulder pattern portion (20) is a first longitudinal groove (11), and the longitudinal groove (10) located between two adjacent middle pattern portions is a second longitudinal groove (12); A fifth angle A5 is formed between the bottom wall of the first recess (50) of the first longitudinal groove (11) and the groove wall on the other side, and the fifth angle A5 satisfies: 32°≤A5≤35°. A sixth angle A6 is formed between the groove wall between two adjacent first recesses (50) of the first longitudinal groove (11) and the groove wall on the other side, and the sixth angle A6 satisfies: 28°≤A6≤30°. A seventh angle A7 is formed between the bottom wall of the first recess (50) of the second longitudinal groove (12) and the groove wall on the other side, and the seventh angle A7 satisfies: 26°≤A7≤28°. An eighth angle A8 is formed between the groove wall between two adjacent first recesses (50) of the second longitudinal groove (12) and the groove wall on the other side, and the eighth angle A8 satisfies: 23°≤A8≤25°.

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

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