tire

Abstract

This invention provides a tire. The tire tread includes multiple tread patterns spaced apart along the width direction of the tire. Marking structures are provided on the tread patterns, each marking structure including: a first marking groove located between two opposite sides of the tread pattern; a second marking groove disposed on the bottom wall of the first marking groove; and a guide groove, one end of which communicates with the second marking groove, and the other end of which extends to one of the two sides. The groove wall of the first marking groove forms a first angle A1 with the tire tread, where the angle A1 satisfies: 20° ≤ A1 ≤ 60°. This invention effectively solves the problem in the prior art where drivers cannot anticipate the tire wear process of new energy vehicles, leading to lower driving safety.

Description

Technical Field

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

[0002] Currently, tires are the only component of new energy vehicles in contact with the ground, and their wear condition directly affects the vehicle's driving safety, handling stability, and range efficiency. Wear indicators are core markings in the tire structure used to indicate the tire's wear limit; they are typically located on the tire tread and are used to determine whether the tire needs to be replaced.

[0003] However, traditional wear indicators are mostly single-depth structures. For new energy vehicles with large curb weight and high instantaneous torque, the tire wear rate is relatively fast. Users can only perceive the wear through vision or touch when the tire wear reaches its limit. They cannot understand the tire wear process in advance, making it difficult to carry out preventive maintenance and increasing the driving safety of drivers. Summary of the Invention

[0004] The main objective of this invention is to provide a tire that solves the problem of low driving safety in the prior art, where drivers cannot know in advance the wear process of tires on new energy vehicles.

[0005] To achieve the above objectives, the present invention provides a tire. The tire tread includes a plurality of tread patterns spaced apart along the width direction of the tire. A marking structure is provided on the tread patterns. The marking structure includes: a first marking groove located between two opposite sides of the tread patterns; a second marking groove disposed on the bottom wall of the first marking groove; and a flow guiding groove, one end of which communicates with the second marking groove, and the other end of which extends to one of the two sides. The groove wall of the first marking groove is set at a first angle A1 with the tread, and the first angle A1 satisfies: 20°≤A1≤60°.

[0006] Furthermore, along the direction perpendicular to the tire tread, the groove depth D1 of the first marking groove satisfies: 0.5mm≤D1≤1mm, and the groove depth D2 of the second marking groove satisfies: 1.5mm≤D2-D1≤4.5mm; wherein, the groove depths D3, D1, and D2 of the guide groove satisfy: D1<D3≤D2.

[0007] Furthermore, the groove depth D3 is greater than 0.6 mm, and the marking structure also includes: a reinforcing protrusion, which is set on the bottom wall of the flow guiding groove, and the two ends of the reinforcing protrusion are respectively connected to the two side walls of the flow guiding groove.

[0008] Furthermore, the guide groove includes a first guide groove and a second guide groove that are interconnected. The end of the first guide groove away from the second guide groove is connected to the second marking groove, and the end of the second guide groove away from the first guide groove extends to the side of the tread pattern. The first guide groove and the second guide groove are set at a second included angle A2, and the second included angle A2 satisfies: 90°<A2≤165°.

[0009] Furthermore, along the width direction of the tire, the length L of the guide groove and the width W1 of the guide groove satisfy: 40mm≤L<80mm, 0.6mm≤W1<2mm; and / or, along the width direction of the tire, the length L of the guide groove and the width W2 of the tread pattern satisfy: L<W2; and / or, along the width direction of the tire, the length L1 of the second guide groove and the length L of the guide groove satisfy: 0.31L≤L≤0.35L.

[0010] Furthermore, the marking structure also includes: a third marking groove, disposed on the bottom wall of the second marking groove; wherein, along the direction perpendicular to the tread, the groove depth D4 of the third marking groove satisfies the following condition: 2.8mm≤D4-D2≤3.2mm; and / or, the edge of the third marking groove has a minimum distance C1 between the edge of the bottom wall of the second marking groove and the minimum distance C1 satisfies the following condition: 0.48mm≤C1≤0.52mm.

[0011] Furthermore, the third marking groove includes a first marking sub-groove and a second marking sub-groove that are interconnected and centrally symmetrical; wherein, along the direction away from the tread, the groove width of the first marking sub-groove gradually decreases to form a conical structure; and / or, along the direction away from the tread, the groove width of the second marking sub-groove gradually decreases to form a conical structure.

[0012] Further, at least one of the first and second marking grooves includes a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall connected in sequence, with the first and third sidewalls facing each other; wherein the second sidewall is positioned at a third angle A3 with the centerline S of the tread, the third sidewall is positioned at a fourth angle A4 with the centerline S, and the fourth sidewall is positioned at a fifth angle A5 with the centerline S. The third angle A3, the fourth angle A4, and the fifth angle A5 are respectively defined as follows: 5. Satisfying: 10.5°≤A3≤14.5°, 48°≤A4≤52°, 88°≤A5≤92°; and / or, the longest orthographic projection L3 of the second sidewall on the tread and the side length L4 of the bottom wall of the second marking groove satisfy: 0.48L4≤L3≤0.52L4; and / or, the longest orthographic projection L5 of the third sidewall on the tread and the side length L4 of the bottom wall of the second marking groove satisfy: 0.64L4≤L5≤0.68L4.

[0013] Furthermore, the first sidewall includes a first groove segment, a second groove segment, and a third groove segment connected in sequence. The first groove segment is connected to the second sidewall, and the third groove segment is disposed opposite to the fourth sidewall. The first groove segment and the second sidewall are disposed at a sixth included angle A6, the first groove segment and the second groove segment are disposed at a seventh included angle A7, and the second groove segment and the third groove segment are disposed at an eighth included angle A8. The sixth included angle A6, the seventh included angle A7, and the eighth included angle A8 are all obtuse angles, so that the first sidewall forms a structure that protrudes toward the third sidewall.

[0014] Furthermore, the marking structure also includes: multiple textured protrusions, spaced apart along a first preset direction on the bottom wall of the second marking groove, wherein the height H1 of the textured protrusions satisfies: 0.48mm≤H1≤0.52mm, and the width W3 of the textured protrusions satisfies: 0.18mm≤W3≤0.35mm; or, multiple textured grooves, spaced apart along a first preset direction on the bottom wall of the second marking groove, wherein the groove depth D5 of the textured grooves satisfies: 0.48mm≤D5≤0.52mm, and the groove width W4 of the textured grooves satisfies: 0.18mm≤W4≤1mm.

[0015] According to the technical solution of this invention, the tire tread includes multiple tread pattern portions spaced apart along the width direction of the tire. A marking structure is provided on each tread pattern portion. The marking structure includes: a first marking groove located between two opposite sides of the tread pattern portion; a second marking groove disposed on the bottom wall of the first marking groove; and a guide groove, one end of which communicates with the second marking groove, and the other end of which extends to one of the two sides. The groove wall of the first marking groove forms a first angle A1 with the tire tread, where the angle A1 satisfies: 20°≤A1≤60°. Thus, the first marking groove is disposed on the surface of the tread pattern portion, and a second marking groove is further provided on its bottom wall. The first and second marking grooves form two wear indication levels of different depths in a direction perpendicular to the tire tread. Meanwhile, because the first marking groove has an angle of 20° to 60° with the tread, it forms a sloping, chamfered structure similar to that surrounding the second marking groove. Besides the structural difference, this sloping, chamfered structure produces a striking contrast in edge shadows under light, creating a visual effect different from the second marking groove. During tire operation, the sloping first marking groove will wear down first. Once worn down, the driver can clearly see it disappear, leaving the second marking groove exposed and in contact with the road surface, providing an early warning of tire wear. The driver can then check the tire's appearance. When only the bottom wall of the second marking groove remains visible, the tire has reached its wear limit and needs replacement. Compared to traditional single-depth wear indicators, the above-mentioned design can indicate the tire wear process, allowing drivers to intuitively perceive whether the tire is in the middle or late stages of wear. Drivers can promptly check the tire's appearance during the middle stages of wear and plan when to replace it. For new energy vehicles with large curb weight and high instantaneous torque, early warning of tire wear can effectively compensate for the faster tire wear rate, reducing the risks of tire blowouts and wet slippage caused by excessive tire wear, thus improving driving safety. This solves the problem of lower driving safety in existing technologies where drivers cannot anticipate the tire wear process of new energy vehicles. Simultaneously, the drainage groove design creates drainage channels from the inside of the first and second marking grooves to the side of the tread pattern. When the tire travels on flooded roads, water entering the first and second marking grooves can be quickly drained through the drainage grooves, ensuring tire drainage performance and wet handling performance while preventing water and mud from accumulating within the marking structure, maintaining the long-term visibility of the marking structure, and improving the reliability of its identification.Meanwhile, the first marking groove is spaced apart from the side of the tread pattern, which ensures that the first marking groove does not extend to the side of the tread pattern. This ensures the rigidity of the tread pattern block and also prevents the first marking groove from extending to the side of the tread pattern, which could lead to premature detachment and cracking, thus ensuring the durability of the marking structure. Attached Figure Description

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

[0017] Figure 1 A partial perspective view of an embodiment of a tire according to the present invention is shown;

[0018] Figure 2 It shows Figure 1 Enlarged diagram of point A in the diagram;

[0019] Figure 3 It shows Figure 1 Enlarged diagram of point B in the image;

[0020] Figure 4 It shows Figure 1 Sectional view in;

[0021] Figure 5 It shows Figure 1 Top view of part of the structure;

[0022] Figure 6 It shows Figure 5 Enlarged view of some of the structures in the image;

[0023] Figure 7 A partial perspective view of a tire according to a second embodiment of the present invention is shown;

[0024] Figure 8 A partial perspective view of a tire according to a fourth embodiment of the present invention is shown.

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

[0026] 1. Tread pattern area;

[0027] 10. First marking groove;

[0028] 20. Second marking groove;

[0029] 30. Flow guide groove; 31. First flow guide groove; 32. Second flow guide groove;

[0030] 40. Strengthen the protrusions;

[0031] 50. Third marking groove; 501. First marking groove; 502. Second marking groove;

[0032] 51. First sidewall; 511. First groove segment; 512. Second groove segment; 513. Third groove segment; 52. Second sidewall; 53. Third sidewall; 54. Fourth sidewall;

[0033] 60. Textured bumps. Detailed Implementation

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0036] In this invention, unless otherwise stated, directional terms such as "up" and "down" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" are generally used in relation to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0037] To address the problem of low driving safety in existing technologies where drivers cannot anticipate the wear process of tires on new energy vehicles, this application provides a tire.

[0038] like Figures 1 to 8 As shown, the tire tread includes multiple tread pattern portions 1 spaced apart along the width direction of the tire. Marking structures are provided on the tread pattern portions 1, including a first marking groove 10, a second marking groove 20, and a flow guide groove 30. The first marking groove 10 is located between two opposite sides of the tread pattern portion 1. The second marking groove 20 is disposed on the bottom wall of the first marking groove 10. One end of the flow guide groove 30 communicates with the second marking groove 20, and the other end of the flow guide groove 30 extends to one of the two sides. The groove wall of the first marking groove 10 forms a first angle A1 with the tire tread, where the first angle A1 satisfies: 20° ≤ A1 ≤ 60°.

[0039] Applying the technical solution of this embodiment, the tire tread includes a plurality of tread pattern portions 1 spaced apart along the width direction of the tire. A marking structure is provided on each tread pattern portion 1. The marking structure includes: a first marking groove 10 located between two opposite sides of the tread pattern portion 1; a second marking groove 20 disposed on the bottom wall of the first marking groove 10; and a guide groove 30, one end of which communicates with the second marking groove 20, and the other end of which extends to one of the two sides. The groove wall of the first marking groove 10 forms a first angle A1 with the tire tread, where the first angle A1 satisfies: 20°≤A1≤60°. Thus, the first marking groove 10 is disposed on the surface of the tread pattern portion 1, and the second marking groove 20 is further provided on its bottom wall. The first marking groove 10 and the second marking groove 20 form two wear indication levels of different depths in a direction perpendicular to the tire tread. Meanwhile, because the groove wall of the first marking groove 10 forms an angle of 20° to 60° with the tire tread, the first marking groove 10 forms a sloping, chamfered structure similar to that surrounding the second marking groove 20. Besides the structural difference, the sloping, chamfered structure produces a significant contrast in edge shadows under light, creating a visual effect different from the second marking groove 20. During tire operation, the sloping first marking groove 10 will wear down first. Once worn down, the driver can clearly see the first marking groove 10 disappear, and the second marking groove 20 becomes exposed and in contact with the driving surface, thus providing a warning of tire wear. The driver can then check the tire's appearance. When the second marking groove 20 is worn down to its bottom wall, and the driver can only see the bottom wall, it indicates that the tire has reached its wear limit and needs to be replaced. Compared to traditional single-depth wear indicators, the above-mentioned settings can indicate the tire wear process, allowing drivers to intuitively perceive whether the tire is in the middle or late stages of wear. Drivers can promptly check the tire's appearance during the middle stages of wear and plan when to replace it. For new energy vehicles with large curb weight and high instantaneous torque, early warning of tire wear can effectively compensate for the faster tire wear rate, reducing the risks of tire blowouts and slippage on wet surfaces caused by excessive tire wear, thus improving tire driving safety. This solves the problem of lower driving safety in existing technologies where drivers cannot anticipate the tire wear process of new energy vehicles.Meanwhile, the arrangement of the drainage groove 30 forms a drainage channel from the inside of the first marking groove 10 and the second marking groove 20 to the side of the tread pattern 1. When the tire travels on a flooded road, water entering the first marking groove 10 and the second marking groove 20 can be quickly discharged through the drainage groove 30. This ensures the tire's drainage performance and wet handling performance while preventing water and mud from accumulating in the marking structure, maintaining the long-term visibility of the marking structure and improving its recognition reliability. Furthermore, the spacing between the sidewall of the first marking groove 10 and the side of the tread pattern 1 ensures that the first marking groove 10 does not extend to the side of the tread pattern 1. This maintains the rigidity of the tread pattern blocks and prevents the first marking groove 10 from extending to the side of the tread pattern 1, thus avoiding premature detachment and cracking and ensuring the durability of the marking structure.

[0040] In this embodiment, the first marking groove 10 has an inclined groove wall, which makes the first marking groove 10 form a structure similar to an inverted trapezoid.

[0041] In this embodiment, the second marking groove 20 is rectangular in design to reduce stress concentration.

[0042] In this embodiment, along the direction perpendicular to the tire tread, the groove depth D1 of the first marking groove 10 satisfies: 0.5mm ≤ D1 ≤ 1mm, and the groove depth D2 of the second marking groove 20 satisfies: 1.5mm ≤ D2 - D1 ≤ 4.5mm. The groove depths D3, D1, and D2 of the guide groove 30 satisfy: D1 < D3 ≤ D2. Thus, the range of the groove depth D1 of the first marking groove 10 forms the first wear indicator level of the tire. After the first marking groove 10 wears down, it indicates to the driver that the tire has developed a certain degree of wear, prompting the driver to observe the tire's appearance. Simultaneously, the range of the groove depth D2 of the second marking groove 20 forms the second wear indicator level of the tire, indicating to the driver that the tire has worn down to the position of the second marking groove 20 and that tire replacement needs to be planned in advance. Meanwhile, the setting of the groove depth D3 of the guide groove 30 allows the guide groove 30 to smoothly drain the accumulated water or sludge in the first marking groove 10 and the second marking groove 20, ensuring the reliability of the identification of the first marking groove 10 and the second marking groove 20. On the other hand, it makes the setting of the guide groove 30 more flexible. When the groove depth D3 of the guide groove 30 is greater than the groove depth D1 of the first marking groove 10 and less than the groove depth D2 of the second marking groove 20, the guide groove 30 can become an auxiliary marking groove, which can refine the tire wear degree under the indication of wear of the second marking groove 20. Specifically, after the first marking groove 10 is worn away, because the groove depth D3 of the guide groove 30 is shallower than the groove depth D2 of the second marking groove 20, the driver can understand that the tire has worn to the second stage after the first marking groove 10 disappears. When the guide groove 30 wears away further while the second marking groove 20 has not yet worn away, the driver can judge that the tire has worn to the middle to late stage of the second stage, and there is a relatively short time before the second marking groove 20 is worn away. At this time, the driver can obtain information that the tire is close to the wear limit based on the wear of the guide groove 30, thereby helping the driver to further refine the indication information of the second wear level of the tire and improve the graded warning function of the marking structure. When the groove depth D3 of the guide groove 30 is the same as the groove depth D2 of the second marking groove 20, the guide groove 30 can combine with the second marking groove 20 to form the second wear indication level, enhance the display area of ​​the second wear indication level, and enable the driver to quickly identify that the tire has worn to the second stage and needs to pay close attention to the appearance of the tire and replace the tire in time.

[0043] In this embodiment, the groove depth D1 is 0.5 mm to ensure that the value of the groove depth H1 is more appropriate.

[0044] In this embodiment, the groove depth D2 is 1.5mm to ensure that the value of the groove depth H1 is more appropriate.

[0045] In this embodiment, the groove depth D3 is the same as the groove depth D2 to enhance the visual effect of the tire wearing down to the second marking groove 20.

[0046] In this embodiment, since the sidewall of the first marking groove 10 is inclined, the first marking groove 10 forms an inverted trapezoidal three-dimensional groove. The second marking groove 20 is disposed on the bottom wall of the first marking groove 10. The second marking groove 20 is generally designed as a cube, and the side length of the groove wall of the second marking groove 20 is the same as the side length of the bottom wall of the first marking groove 10.

[0047] Specifically, the walls of the first marking groove 10 are connected by an arc with a radius of 0.5 mm.

[0048] Specifically, the walls of the second marking groove 20 are connected by an arc with a radius ranging from 0.5 mm to 2 mm, and the side length of the bottom wall of the second marking groove 20 ranges from 10 mm to 15 mm.

[0049] In this embodiment, the tread is provided with multiple longitudinal grooves, which are spaced apart along the width direction of the tire to divide the tread into multiple tread pattern portions 1. One end of the guide groove 30 is connected to the longitudinal grooves or extends to the side of the tire shoulder tread portion.

[0050] Specifically, the multiple tread pattern portions 1 include two shoulder tread portions and multiple intermediate tread portions located between the two shoulder tread portions. The marking structure is disposed on the shoulder tread portion, and one end of the guide groove 30 is connected to the longitudinal groove.

[0051] like Figure 1 and Figure 3 As shown, the groove depth D3 is greater than 0.6 mm. The marking structure also includes a reinforcing protrusion 40, which is set on the bottom wall of the guide groove 30. The two ends of the reinforcing protrusion 40 are respectively connected to the two side walls of the guide groove 30. In this way, when the groove depth D3 of the guide groove 30 is greater than 0.6 mm, the reinforcing protrusion 40 is provided on the bottom wall of the guide groove 30. The reinforcing protrusion 40 can connect the two side walls of the guide groove 30, ensuring the rigidity of the tread pattern blocks and avoiding the situation where the tire creep deformation is large due to the greater groove depth D3 of the guide groove 30, thereby improving the tire's handling stability.

[0052] In this embodiment, the height of the reinforcing protrusion 40 is 0.75 mm.

[0053] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the guide groove 30 includes a first guide groove 31 and a second guide groove 32 that are interconnected. The end of the first guide groove 31 away from the second guide groove 32 is connected to the second marking groove 20, and the end of the second guide groove 32 away from the first guide groove 31 extends to the side of the tread pattern portion 1. The first guide groove 31 and the second guide groove 32 are set at a second included angle A2, which satisfies the condition: 90° < A2 ≤ 165°. This arrangement creates a bent shape in the guide groove 30, allowing water and sediment to settle at the bend and be discharged as the tire rolls, reducing the risk of the guide groove 30 being blocked by foreign objects and improving the tire's self-cleaning ability. Simultaneously, the bent shape of the guide groove 30 reduces the tire's rigidity from different directions, ensuring the tire's grip in different directions and improving its traction performance.

[0054] In this embodiment, the connection between the first guide groove 31 and the second guide groove 32 is a smooth arc transition.

[0055] like Figure 5 As shown, along the width direction of the tire, the length L and width W1 of the guide groove 30 satisfy: 40mm ≤ L < 80mm, 0.6mm ≤ W1 < 2mm; and / or, along the width direction of the tire, the length L of the guide groove 30 and the width W2 of the tread pattern 1 satisfy: L < W2; and / or, along the width direction of the tire, the length L1 of the second guide channel 32 and the length L of the guide groove 30 satisfy: 0.31L ≤ L ≤ 0.35L. Thus, the above arrangement firstly ensures that the length of the guide groove 30 on the tread pattern 1 is appropriately positioned, avoiding excessive tire creep deformation due to a long or wide guide groove 30, ensuring the rigidity of the tire tread blocks, and improving tire handling stability. Secondly, it ensures that the position of the second guide channel 32 relative to the overall length of the guide groove 30 is appropriate, making the bending position of the second guide groove 30 more reasonable, which is conducive to the discharge of accumulated water and sludge.

[0056] In this embodiment, the reinforcing protrusion 40 is provided on the bottom wall of the second guide groove 32. The length of the reinforcing protrusion 40 is the same as the length of the second guide groove 32. The reinforcing protrusion 40 connects the two side walls of the second guide groove 32 to ensure the rigidity of the tread pattern block at the second guide groove 32, reduce the chipping and wear of the tread pattern block, and ensure the wear resistance of the tire.

[0057] like Figure 1 and Figure 2As shown, the marking structure also includes a third marking groove 50, which is disposed on the bottom wall of the second marking groove 20. Specifically, along the direction perpendicular to the tire tread, the groove depth D4 of the third marking groove 50 satisfies the following condition: 2.8mm ≤ D4 - D2 ≤ 3.2mm; and / or, the edge of the third marking groove 50 has a minimum distance C1 between it and the edge of the bottom wall of the second marking groove 20, where the minimum distance C1 satisfies the following condition: 0.48mm ≤ C1 ≤ 0.52mm. Thus, after the second marking groove 20 is completely worn, the bottom wall of the second marking groove 20 will directly contact the driving surface. At this time, the third marking groove 50 disposed on the bottom wall of the second marking groove 20 will be exposed, clearly indicating to the driver that the tire needs to be replaced. This allows the driver to receive the notification of tire replacement upon seeing the third marking groove 50. Compared to the bottom wall of the second marking groove 20, the third marking groove 50 is more easily distinguishable and intuitive, more quickly indicating to the driver that the tire has reached its wear limit, thus improving the reliability of the marking structure. Meanwhile, the minimum spacing C1 setting ensures that the third marking groove 50 does not touch the edge of the second marking groove 20, avoiding stress concentration and ensuring the durability of the tread pattern blocks.

[0058] like Figure 2 , Figure 5 and Figure 6 As shown, the third marking groove 50 includes a first marking groove 501 and a second marking groove 502 that are interconnected and centrally symmetrical. The width of the first marking groove 501 gradually decreases in the direction away from the tire tread, forming a conical structure; and / or, the width of the second marking groove 502 gradually decreases in the direction away from the tire tread, forming a conical structure. Thus, the third marking groove 50, formed by the interconnected centrally symmetrical first and second marking grooves 501, enhances its recognizability and facilitates driver identification. Simultaneously, the marking grooves help break the water film between the tire and the road surface, aiding in the drainage of water accumulated on the tire tread and ensuring the tire's wet handling performance. Furthermore, the gradually decreasing width of the marking grooves ensures that the third marking groove 50, while providing wear indication, also maintains the rigidity of the tread blocks, guaranteeing tire handling stability.

[0059] In this embodiment, the third marking groove 50 is designed in a V-shape or a U-shape.

[0060] In this embodiment, the first marker groove 501 and the second marker groove 502 have the same shape.

[0061] like Figure 2 and Figure 6As shown, at least one of the first mark groove 501 and the second mark groove 502 includes a first sidewall 51, a second sidewall 52, a third sidewall 53 and a fourth sidewall 54 connected in sequence, with the first sidewall 51 and the third sidewall 53 disposed opposite to each other. Specifically, the second sidewall 52 is set at a third angle A3 with the center line S of the tread, the third sidewall 53 is set at a fourth angle A4 with the center line S, and the fourth sidewall 54 is set at a fifth angle A5 with the center line S. The third angle A3, the fourth angle A4, and the fifth angle A5 satisfy the following conditions: 10.5°≤A3≤14.5°, 48°≤A4≤52°, and 88°≤A5≤92°; and / or, the longest orthographic projection L3 of the second sidewall 52 on the tread and the side length L4 of the bottom wall of the second marking groove 20 satisfy the following condition: 0.48L4≤L3≤0.52L4; and / or, the longest orthographic projection L5 of the third sidewall 53 on the tread and the side length L4 of the bottom wall of the second marking groove 20 satisfy the following condition: 0.64L4≤L5≤0.68L4. In this way, the first marking groove 501 or the second marking groove 502, connected by four sidewalls in different directions, forms an arrow-like shape, which in turn makes the third marking groove 50 form a lightning bolt-like shape. When the third marking groove 50 is exposed, the different sidewalls reflect light, enhancing its recognizability and making it easier for drivers to identify, thus improving the warning effect of the marking structure. Simultaneously, the lengths of the second sidewall 52 and the third sidewall 53 are designed to ensure that the third marking groove 50, while achieving its specific shape, is centered on the bottom wall of the second marking groove 20, avoiding contact with the edge of the second marking groove 20 and ensuring the durability of the tread pattern blocks.

[0062] In this embodiment, the fourth sidewall 54 is arranged perpendicular to the center line S.

[0063] like Figure 2 and Figure 6As shown, the first sidewall 51 includes a first groove segment 511, a second groove segment 512, and a third groove segment 513 connected in sequence. The first groove segment 511 is connected to the second sidewall 52, and the third groove segment 513 is disposed opposite to the fourth sidewall 54. The first groove segment 511 and the second sidewall 52 are arranged at a sixth included angle A6, the first groove segment 511 and the second groove segment 512 are arranged at a seventh included angle A7, and the second groove segment 512 and the third groove segment 513 are arranged at an eighth included angle A8. The sixth included angle A6, the seventh included angle A7, and the eighth included angle A8 are all obtuse angles, so that the first sidewall 51 forms a structure that protrudes towards the third sidewall 53. In this way, the first sidewall 51 continues to form a bent structure through three groove segments, so that the first sidewall 51 bends and protrudes towards the third sidewall 53. As a result, the bottom wall of the second marking groove 20 forms a long strip protrusion corresponding to the bent part of the first sidewall 51. The bottom wall of the second marking groove 20 will form a similar interlocking structure with the first sidewall 51 of the marking groove. While realizing the special shape of the third marking groove 50, it can also ensure that the bottom wall of the second marking groove 20 and the third marking groove 50 form an interlocking fit, ensuring the structural rigidity of the bottom wall of the second marking groove 20, thereby ensuring the structural rigidity of the tread pattern block and ensuring the handling performance of the tire.

[0064] In this embodiment, the first groove segment 511 and the second sidewall 52 are arranged at a 120° angle, and the first groove segment 511 and the second groove segment 512 are arranged at a 240° angle.

[0065] Example 2

[0066] The difference between Embodiment 2 and Embodiment 1 is that a plurality of textured protrusions 60 are provided on the bottom wall of the second marking groove 20 at intervals along the length direction of the second marking groove 20.

[0067] like Figure 7 As shown, the marking structure also includes multiple textured protrusions 60, which are spaced apart along a first preset direction on the bottom wall of the second marking groove 20. The height H1 of the textured protrusions 60 satisfies: 0.48mm≤H1≤0.52mm, and the width W3 of the textured protrusions 60 satisfies: 0.18mm≤W3≤1mm. Thus, the multiple textured protrusions 60 on the bottom wall of the second marking groove 20, compared to a smooth bottom wall, can reflect light, giving the bottom wall of the second marking groove 20 a frosted feel. This enhances the recognizability of the bottom wall of the second marking groove 20, facilitating driver identification and improving the tactile feel of the driver's fingers, thereby increasing the distinguishability of the second marking groove 20.

[0068] Specifically, the textured protrusions 60 can be achieved using laser engraving technology.

[0069] Specifically, the smaller the groove width W3 of the texture protrusion 60, the smaller the height H1 of the texture protrusion 60, and the larger the spacing between two adjacent texture protrusions 60. Optionally, the texture protrusion 60 can be arranged in a straight line, an arc shape, or a broken line shape.

[0070] Example 3

[0071] The difference between Embodiment 3 and Embodiment 2 is that Embodiment 2 enhances recognizability by setting multiple textured protrusions 60 on the bottom wall of the second marking groove 20, while Embodiment 3 enhances recognizability by cutting multiple textured grooves spaced along the length of the second marking groove 20 downwards on the bottom wall of the second marking groove 20, so that light is reflected by the groove walls of the multiple grooves.

[0072] Specifically, the marking structure also includes multiple textured grooves, which are spaced apart on the bottom wall of the second marking groove 20 along a first preset direction. The groove depth D5 of the textured groove satisfies: 0.48mm≤D5≤0.52mm, and the groove width W4 of the textured groove satisfies: 0.18mm≤W4≤1mm.

[0073] Specifically, the smaller the groove width W4 of the textured groove, the smaller the groove depth D5 of the textured groove, and the larger the distance between two adjacent textured grooves.

[0074] Optionally, the textured grooves can be straight lines, arcs, or zigzag lines.

[0075] Example 4

[0076] like Figure 8 As shown, the difference between Embodiment 4 and Embodiment 1 lies only in the way the various grooves are implemented. In Embodiment 4, a steel sheet is set on the vulcanizing mold, and the steel sheet forms a fine groove on the tire surface to form a marking structure. Compared with Embodiment 1, which uses a mold protrusion to form grooves on the tire surface, the groove width of the marking structure in Embodiment 4 is narrower.

[0077] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0078] The tire tread includes multiple tread patterns spaced apart along the width of the tire. Marking structures are provided on the tread patterns, including: a first marking groove located between two opposite sides of the tread pattern; a second marking groove on the bottom wall of the first marking groove; and a guide groove, one end of which communicates with the second marking groove, and the other end extending to one of the two sides. The wall of the first marking groove forms a first angle A1 with the tread, satisfying 20°≤A1≤60°. Thus, the first marking groove is located on the surface of the tread pattern, and the second marking groove is further provided on its bottom wall. The first and second marking grooves form two wear indication levels of different depths in a direction perpendicular to the tread. Meanwhile, because the first marking groove has an angle of 20° to 60° with the tread, it forms a sloping, chamfered structure similar to that surrounding the second marking groove. Besides the structural difference, this sloping, chamfered structure produces a striking contrast in edge shadows under light, creating a visual effect different from the second marking groove. During tire operation, the sloping first marking groove will wear down first. Once worn down, the driver can clearly see it disappear, leaving the second marking groove exposed and in contact with the road surface, providing an early warning of tire wear. The driver can then check the tire's appearance. When only the bottom wall of the second marking groove remains visible, the tire has reached its wear limit and needs replacement. Compared to traditional single-depth wear indicators, the above-mentioned design can indicate the tire wear process, allowing drivers to intuitively perceive whether the tire is in the middle or late stages of wear. Drivers can promptly check the tire's appearance during the middle stages of wear and plan when to replace it. For new energy vehicles with large curb weight and high instantaneous torque, early warning of tire wear can effectively compensate for the faster tire wear rate, reducing the risks of tire blowouts and wet slippage caused by excessive tire wear, thus improving driving safety. This solves the problem of lower driving safety in existing technologies where drivers cannot anticipate the tire wear process of new energy vehicles. Simultaneously, the drainage groove design creates drainage channels from the inside of the first and second marking grooves to the side of the tread pattern. When the tire travels on flooded roads, water entering the first and second marking grooves can be quickly drained through the drainage grooves, ensuring tire drainage performance and wet handling performance while preventing water and mud from accumulating within the marking structure, maintaining the long-term visibility of the marking structure, and improving the reliability of its identification.Meanwhile, the first marking groove is spaced apart from the side of the tread pattern, which ensures that the first marking groove does not extend to the side of the tread pattern. This ensures the rigidity of the tread pattern block and also prevents the first marking groove from extending to the side of the tread pattern, which could lead to premature detachment and cracking, thus ensuring the durability of the marking structure.

[0079] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0080] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0081] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A tire characterized by, The tire tread includes a plurality of tread pattern portions (1) spaced apart along the width direction of the tire, and a marking structure is provided on the tread pattern portions (1), the marking structure including: The first marking groove (10) is located between two opposite sides of the tread pattern portion (1); The second marking groove (20) is disposed on the bottom wall of the first marking groove (10); A flow guide groove (30), one end of which is connected to the second marking groove (20), and the other end of which extends to one of the two sides; Wherein, the groove wall of the first marking groove (10) is set at a first included angle A1 with the tread, and the first included angle A1 satisfies: 20°≤A1≤60°.

2. The tire according to claim 1, characterized in that, Along the direction perpendicular to the tread, the groove depth D1 of the first marking groove (10) satisfies: 0.5mm≤D1≤1mm, and the groove depth D2 of the second marking groove (20) satisfies: 1.5mm≤D2-D1≤4.5mm; The groove depths D3, D1, and D2 of the flow guide groove (30) satisfy the following condition: D1 < D3 ≤ D2.

3. Tyre according to Claim 2, characterized in that, The groove depth D3 is greater than 0.6 mm, and the marking structure further includes: A reinforcing protrusion (40) is provided on the bottom wall of the flow guide groove (30), and the two ends of the reinforcing protrusion (40) are respectively connected to the two side walls of the flow guide groove (30).

4. The tire according to claim 1, characterized in that, The flow guide groove (30) includes a first flow guide groove (31) and a second flow guide groove (32) that are interconnected. The end of the first flow guide groove (31) away from the second flow guide groove (32) is connected to the second marking groove (20). The end of the second flow guide groove (32) away from the first flow guide groove (31) extends to the side of the tread pattern portion (1). The first guide groove (31) and the second guide groove (32) are set at a second included angle A2, and the second included angle A2 satisfies: 90°<A2≤165°.

5. The tire according to claim 4, characterized in that, Along the width direction of the tire, the length L of the guide groove (30) and the width W1 of the guide groove (30) satisfy: 40mm ≤ L < 80mm, 0.6mm ≤ W1 < 2mm; and / or, Along the width direction of the tire, the length L of the guide groove (30) and the width W2 of the tread pattern (1) satisfy the following condition: L < W2; and / or, Along the width direction of the tire, the length L1 of the second guide groove (32) and the length L of the guide groove (30) satisfy the following condition: 0.31L≤L≤0.35L.

6. The tire according to claim 2, characterized in that, The tag structure also includes: The third marking groove (50) is disposed on the bottom wall of the second marking groove (20); Wherein, along the direction perpendicular to the tread, the groove depth D4 of the third marking groove (50) satisfies the following condition: 2.8mm ≤ D4 - D2 ≤ 3.2mm; and / or, The edge of the third marking groove (50) has a minimum distance C1 between the edge of the bottom wall of the second marking groove (20), and the minimum distance C1 satisfies: 0.48mm≤C1≤0.52mm.

7. The tire according to claim 6, characterized in that, The third marking groove (50) includes a first marking sub-groove (501) and a second marking groove (502) that are interconnected and centrally symmetrical. Wherein, along the direction away from the tread, the groove width of the first marking groove (501) gradually decreases, so that the first marking groove (501) forms a conical structure; and / or, Along the direction away from the tread, the groove width of the second marking groove (502) gradually decreases so that the second marking groove (502) forms a conical structure.

8. The tire according to claim 7, characterized in that, At least one of the first marking groove (501) and the second marking groove (502) includes a first sidewall (51), a second sidewall (52), a third sidewall (53) and a fourth sidewall (54) connected in sequence, with the first sidewall (51) and the third sidewall (53) being disposed opposite to each other; Wherein, the second sidewall (52) is set at a third angle A3 with the center line S of the tread, the third sidewall (53) is set at a fourth angle A4 with the center line S, and the fourth sidewall (54) is set at a fifth angle A5 with the center line S. The third angle A3, the fourth angle A4, and the fifth angle A5 satisfy: 10.5°≤A3≤14.5°, 48°≤A4≤52°, 88°≤A5≤92°; and / or, The longest orthographic projection L3 of the second sidewall (52) on the tire tread satisfies the following condition between the side length L4 of the bottom wall of the second marking groove (20): 0.48L4≤L3≤0.52L4; and / or, The third sidewall (53) satisfies the following condition between its longest orthographic projection L5 on the tire surface and the side length L4 of the bottom wall of the second marking groove (20): 0.64L4≤L5≤0.68L4.

9. The tire according to claim 8, characterized in that, The first sidewall (51) includes a first groove segment (511), a second groove segment (512) and a third groove segment (513) connected in sequence. The first groove segment (511) is connected to the second sidewall (52), and the third groove segment (513) is disposed opposite to the fourth sidewall (54). The first groove segment (511) and the second sidewall (52) are arranged at a sixth included angle A6, the first groove segment (511) and the second groove segment (512) are arranged at a seventh included angle A7, and the second groove segment (512) and the third groove segment (513) are arranged at an eighth included angle A8. The sixth included angle A6, the seventh included angle A7 and the eighth included angle A8 are all obtuse angles, so that the first sidewall (51) forms a structure that protrudes toward the third sidewall (53).

10. The tire according to claim 1, characterized in that, The tag structure also includes: Multiple textured protrusions (60) are spaced apart along a first preset direction on the bottom wall of the second marking groove (20). The height H1 of the textured protrusions (60) satisfies: 0.48mm ≤ H1 ≤ 0.52mm, and the width W3 of the textured protrusions (60) satisfies: 0.18mm ≤ W3 ≤ 1mm; or, Multiple textured grooves are spaced apart on the bottom wall of the second marking groove (20) along a first preset direction. The groove depth D5 of the textured groove satisfies: 0.48mm≤D5≤0.52mm, and the groove width W4 of the textured groove satisfies: 0.18mm≤W4≤1mm.

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