Tread structure and tire
By optimizing the tread pattern design, including the fine grooves and semi-closed wide grooves of the center tread ribs, side tread ribs, and shoulder tread ribs, the problem of reducing noise and rolling resistance while ensuring driving comfort and braking performance in both dry and wet conditions has been solved, achieving a comprehensive effect of high grip, wear resistance, and low noise.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU FENGLI RUBBER TIRE
- Filing Date
- 2025-06-17
- Publication Date
- 2026-06-23
Smart Images
Figure CN224392274U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to tire technical field, especially a kind of tread structure and tire. BACKGROUND
[0002] At present, in the automobile tire industry, more and more attention and emphasis are paid to the driving noise, driving comfort and dry and wet road safety of the tire. In the tire pattern design work, small block patterns can improve the driving noise and driving comfort of the tire, but can affect the dry and wet road handling of the tire, and large block patterns are just the opposite, which can promote the improvement of the handling stability of the tire, but are not conducive to the improvement of the driving noise and driving comfort.
[0003] Therefore, how to ensure good driving comfort performance of the tire, maximize the improvement of the dry and wet road braking performance of the tire, and keep the driving noise of the tire low, so as to achieve the balance point of these performances, has been a problem that needs to be considered by the research and development personnel of tire products. At present, it is urgent to design and develop a new tire product, which has the characteristics of high grip, high wear resistance, good driving comfort, low driving noise and low rolling resistance. SUMMARY
[0004] The utility model aims at at least one of the technical problems existing in the prior art. To this end, the utility model provides a kind of tread structure and tire, so that the tire can provide high grip and high wear resistance when vehicle is driven on highway or ordinary urban road, and also can ensure good driving comfort, low driving noise and low rolling resistance.
[0005] The utility model provides a kind of tread structure in the first aspect embodiment, it includes: the center pattern rib, side pattern rib and shoulder pattern rib along the circumference of the tread structure extend;
[0006] The side pattern rib is provided with two, and is respectively arranged in the two sides of the center pattern rib, the shoulder pattern rib is provided with two, and is respectively arranged in the side of two side pattern rib away from the center pattern rib, the center pattern rib and the side pattern rib between and the side pattern rib and the shoulder pattern rib between are equipped with main groove;
[0007] The center pattern rib is provided with a plurality of first fine grooves arranged at intervals along its extension direction, a plurality of the first fine grooves are arranged at different slopes, and the two ends of the first fine groove are respectively through the side wall of the main groove adjacent thereto;
[0008] The side pattern rib is provided with a plurality of second fine grooves arranged at intervals along its extension direction, and the two ends of the second fine groove are respectively through the side wall of the main groove adjacent thereto;
[0009] The tire shoulder tread ribs are provided with a plurality of semi-enclosed wide grooves arranged at intervals along their extension direction, and one end of each semi-enclosed wide groove penetrates the sidewall of the adjacent main groove.
[0010] The tread structure according to the first aspect of the present invention has at least the following beneficial effects: by setting multiple first fine grooves arranged with different slopes on the central tread rib to divide the central tread rib into several pieces, the inherent ground contact area of each part of the central tread rib can be broken, making the strength of the central tread rib irregular. While ensuring the overall strength of the central tread rib and a large ground contact area, the rigidity of the central tread rib is effectively divided, the stress distribution of the central part is prioritized, the ground contact frequency of the central part is effectively dispersed, the excessive deformation of the central tread rib during vehicle operation is reduced, the wear resistance is improved, and the rolling resistance is reduced. Moreover, while ensuring the grip performance and wear performance of the tire center, the ride comfort is improved.
[0011] By setting main grooves between the center tread rib and the side tread rib, and between the side tread rib and the shoulder tread rib, the tire can quickly expel water when driving on wet roads, providing excellent wet grip performance, cornering stability, and precise steering response, which is beneficial to improving grip performance on both dry and wet roads. By setting multiple semi-enclosed wide grooves on the shoulder tread rib, the airflow direction of the tire shoulder during driving can be effectively blocked, which helps to reduce driving noise.
[0012] In some embodiments of this utility model, the two side tread ribs and the two shoulder tread ribs are symmetrically arranged about the central tread rib; and / or,
[0013] The first fine groove has first Y-shaped grooves at both ends, and the first Y-shaped grooves are respectively connected to the first fine groove and the main groove; and / or,
[0014] The first fine grooves are arranged at equal intervals or at unequal intervals.
[0015] In some embodiments of this utility model, all the second fine grooves are arc-shaped, and the concave and convex directions of the second fine grooves located on the two side patterned ribs are opposite.
[0016] In some embodiments of this utility model, the side patterned rib is further provided with a U-shaped third fine groove, the third fine groove is connected to the second fine groove, and the two ends of the third fine groove pass through the sidewall of the main groove away from the central patterned rib.
[0017] In some embodiments of this utility model, the second fine grooves are arranged at equal intervals or at unequal intervals, and the second fine grooves with odd numbers are provided with the third fine groove.
[0018] In some embodiments of this utility model, the center position of the third fine groove coincides with and is connected to the center position of the second fine groove; and / or,
[0019] The dimensions of the plurality of third fine grooves are different along the length direction of the side patterned ribs; and / or,
[0020] The second fine groove has a second Y-shaped groove at one end near the central patterned rib, and the second Y-shaped groove is connected to both the second fine groove and the main groove; and / or,
[0021] The cross-sectional shape of the second fine groove is Y-shaped or trapezoidal.
[0022] In some embodiments of this utility model, the semi-enclosed wide groove is long and straight and is inclined, and the inclination direction of the semi-enclosed wide groove located on the two tire shoulder tread ribs is consistent.
[0023] In some embodiments of this utility model, the shoulder tread rib is further provided with a plurality of long straight fourth fine grooves. The fourth fine grooves are inclined and are arranged alternately with the semi-enclosed wide grooves along the circumference of the tread structure. The fourth fine grooves and the semi-enclosed wide grooves located on the same shoulder tread rib are consistent in the inclined direction.
[0024] In some embodiments of this utility model, the semi-enclosed wide groove and the fourth fine groove are arranged at equal or unequal intervals; and / or,
[0025] The semi-enclosed wide groove has a Y-shaped cross-section. The end of the semi-enclosed wide groove near the central patterned rib is provided with a connecting groove, which is connected to both the semi-enclosed wide groove and the main groove. The end of the fourth fine groove near the central patterned rib is provided with a third Y-shaped groove, which is connected to both the fourth fine groove and the main groove.
[0026] The second aspect of this utility model provides a tire, the tire having a tread structure as described in the first aspect embodiment.
[0027] The tire according to the second aspect of the present invention has at least the following beneficial effects: by providing the above-mentioned tread structure on the tire tread, the tire can have good dry and wet grip and wear resistance, while also having good driving comfort and reducing driving noise and rolling resistance.
[0028] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description
[0029] Figure 1 This is a partial structural schematic diagram of the tread structure provided according to an embodiment of the present utility model;
[0030] Figure 2 This is a schematic diagram of the groove structure provided according to an embodiment of the present utility model;
[0031] Figure 3 This is a schematic diagram of a groove structure according to another embodiment of the present invention;
[0032] Figure 4 This is a physical illustration of a tire provided according to an embodiment of the present utility model. Figure 1 ;
[0033] Figure 5 This is a physical illustration of a tire provided according to an embodiment of the present utility model. Figure 2 .
[0034] Reference numerals: 110, center tread rib; 111, first fine groove; 112, first Y-shaped groove; 120, side tread rib; 121, second fine groove; 122, second Y-shaped groove; 123, third fine groove; 130, shoulder tread rib; 131, fourth fine groove; 132, third Y-shaped groove; 133, connecting groove; 134, semi-enclosed wide groove; 135, oblique groove; 140, main groove; 150, groove structure. Detailed Implementation
[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0036] In the description of this utility model, it should be understood that features specified as "first" or "second" may explicitly or implicitly include one or more of those features. In the description of this utility model, unless otherwise stated, "several" means one or more, and "multiple" means two or more.
[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0038] In the past, tire wear performance and load-bearing capacity have been the focus of market attention during car driving. However, with the continuous development and progress of global automotive technology and the continuous improvement of people's car concepts, the market has put forward increasingly higher performance requirements for tires that provide load-bearing capacity and transmit driving force. In particular, various countries have formulated corresponding tire labeling regulations, paying more and more attention to tire noise, ride comfort and dry and wet road safety.
[0039] Generally, depending on different usage requirements, passenger car tire tread patterns can be divided into large and small tread patterns, as well as symmetrical, asymmetrical, and directional patterns. Small tread patterns are beneficial for reducing tire noise and improving ride comfort, but are not conducive to improving tire handling performance in dry and wet conditions. Conversely, large tread patterns are beneficial for improving tire handling stability, but are not conducive to improving driving noise and comfort.
[0040] Therefore, designing an optimal tire product that ensures good ride comfort, maximizes dry and wet braking performance, and maintains low tire noise—achieving the best performance balance—has always been a key consideration for tire tread pattern designers. Based on this, innovative tire tread design can guarantee low noise performance. Generally, a design technique can improve certain performance aspects of passenger car tires, while conversely limiting improvements in others. Therefore, comprehensively considering the optimal solution among numerous performance factors and developing targeted products to meet market demands is a significant test of tire designers' ingenuity.
[0041] Based on this, the present invention proposes a tread structure and tire that enables the tire to have high grip and high wear resistance on highways or ordinary urban roads, while also ensuring good driving comfort, low driving noise and low rolling resistance.
[0042] The following is for reference. Figures 1 to 5 This invention describes the tread structure and tire provided according to embodiments of the present invention.
[0043] like Figures 1 to 3As shown, the tread structure according to the first aspect of the present invention is suitable for tires on ordinary roads and can provide excellent driving comfort, dry and wet handling, high wear resistance and low driving noise for automobile pneumatic tires.
[0044] The tread structure of this embodiment has circumferential and axial directions, wherein the circumferential direction is consistent with the circumferential direction of the tire, the axial direction is consistent with the axial direction of the tire, and the axial direction is perpendicular to the circumferential direction. It is understood that... Figure 1 Only a partial structure of the tread is shown, where the longitudinal direction represents the tread structure in... Figure 1 The direction of extension in the middle is perpendicular to the axial direction.
[0045] like Figure 1 As shown, the tread structure includes a central tread rib 110, a side tread rib 120, and a shoulder tread rib 130.
[0046] The center tread rib 110, side tread rib 120, and shoulder tread rib 130 all extend circumferentially along the tread structure. Therefore, viewed axially along the tread structure, the center tread rib 110, side tread rib 120, and shoulder tread rib 130 are all circular. It is understood that the width of the center tread rib 110, side tread rib 120, and shoulder tread rib 130 can be selected according to actual conditions, and no specific limitation is made here.
[0047] One central tread rib 110 is provided, located in the middle of the tread structure. Two side tread ribs 120 are provided, and the two side tread ribs 120 are respectively provided on both sides of the central tread rib 110. Each side tread rib 120 is arranged at intervals from the central tread rib 110, so there is a certain distance between the side tread ribs 120 and the central tread rib 110. Moreover, a main groove 140 is formed between the central tread rib 110 and each side tread rib 120. There are two shoulder tread ribs 130, and the two shoulder tread ribs 130 are respectively located on the side of the two side tread ribs 120 away from the central tread rib 110, so that the side tread ribs 120 are located between the central tread rib 110 and the shoulder tread ribs 130. The shoulder tread ribs 130 and the side tread ribs 120 are arranged at intervals, so there is a certain gap between the shoulder tread ribs 130 and the side tread ribs 120. Moreover, a main groove 140 is formed between the side tread ribs 120 and the adjacent shoulder tread ribs 130.
[0048] Understandably, the main groove 140 also extends circumferentially along the tread structure, making it cylindrical when viewed axially along the tread structure. The width and depth of the main groove 140 can be set according to actual conditions and are not specifically limited here. The cross-sectional shape of the main groove 140 can be square. On the tread structure, four main grooves 140 separate the center tread rib 110, the two side tread ribs 120, and the two shoulder tread ribs 130.
[0049] In this embodiment, as Figure 1 As shown, the two side tread ribs 120 are arranged symmetrically about the central tread rib 110, and the two shoulder tread ribs 130 are arranged symmetrically about the central tread rib 110.
[0050] The central patterned rib 110 has a plurality of first fine grooves 111 along its extending direction. These first fine grooves 111 are arranged at intervals and are inclined at different slopes to form a pattern on the central patterned rib 110. The two ends of each first fine groove 111 penetrate the sidewall of an adjacent main groove 140, allowing the first fine groove 111 to communicate with the main grooves 140 on both sides. In some embodiments, the plurality of first fine grooves 111 are arranged at equal intervals. In other embodiments, the plurality of first fine grooves 111 are arranged at unequal intervals.
[0051] It is understood that the first fine groove 111 is long and straight, and its length direction forms a certain angle with the axial direction of the tread structure, so that the first fine groove 111 is set on the central tread rib 110 in an inclined state. In some examples, multiple first fine grooves 111 are arranged with gradually increasing slopes, and the increase in slope can be constant or variable. In other examples, in any two adjacent first fine grooves 111, the slope of one first fine groove 111 is increased or decreased relative to the other first fine groove 111. In addition, a certain number of first fine grooves 111 can be set as first tread units, and multiple first tread units can be provided, and they can be uniformly or non-uniformly arranged along the circumferential direction of the tread structure. The width of the first fine groove 111 can be set to the range of 0.4 mm to 4 mm.
[0052] In this embodiment, the central tread rib 110 is cut by multiple first fine grooves 111 with different slopes. While ensuring the overall strength and large ground contact area of the central tread rib 110, the stiffness of the central part can be effectively reduced, avoiding excessive deformation of the central tread rib 110 during vehicle operation. At the same time, while ensuring the grip performance and wear performance of the tire center, the ride comfort is improved.
[0053] The side patterned rib 120 is provided with a plurality of second fine grooves 121 along its extension direction. The plurality of second fine grooves 121 are arranged at intervals. Moreover, the two ends of the second fine grooves 121 respectively penetrate the side wall of the adjacent main groove 140, so that the second fine grooves 121 can be connected to the main grooves 140 on both sides.
[0054] In this embodiment, as Figure 1 As shown, all the second fine grooves 121 are arc-shaped. The concave and convex directions of the second fine grooves 121 located on the two side tread ribs 120 are opposite. Specifically, on one side tread rib 120, the concave surfaces of all the second fine grooves 121 face upwards; on the other side tread rib 120, the concave surfaces of all the second fine grooves 121 face downwards. In some embodiments, the second fine grooves 121 are arranged at equal intervals. In other embodiments, the second fine grooves 121 are arranged at unequal intervals. In addition, a certain number of second fine grooves 121 can be set as second tread units. Multiple second tread units are provided and are uniformly or non-uniformly arranged along the circumferential direction of the tread structure. The specific curvature of the second fine grooves 121 can be set according to design requirements and is not specifically limited here.
[0055] The shoulder tread rib 130 has multiple semi-enclosed wide grooves 134 along its extension direction. The multiple semi-enclosed wide grooves 134 are arranged at intervals. Moreover, one end of the semi-enclosed wide groove 134 passes through the side wall of the adjacent main groove 140, so that the semi-enclosed wide groove 134 is connected to the main groove 140 on one side.
[0056] In this embodiment, as Figure 1 As shown, the semi-enclosed wide groove 134 is long and straight, and it is inclined, meaning that the length direction of the semi-enclosed wide groove 134 forms a certain angle with the axial direction of the tread structure, so that the semi-enclosed wide groove 134 is inclined on the shoulder tread rib 130. Moreover, the inclination direction of the semi-enclosed wide groove 134 on the two shoulder tread ribs 130 is consistent. Specifically, on one shoulder tread rib 130, the length extension lines of all the semi-enclosed wide grooves 134 are parallel to each other; on the other shoulder tread rib 130, the length extension lines of all the semi-enclosed wide grooves 134 are parallel to each other; and for the semi-enclosed wide grooves 134 on the two shoulder tread ribs 130, their length extension lines are parallel.
[0057] It is understood that the inclination angle of the semi-enclosed wide groove 134 can be selected according to the actual design, and is not specifically limited here. In some embodiments, the semi-enclosed wide grooves 134 are arranged at equal intervals. In other embodiments, the semi-enclosed wide grooves 134 are arranged at unequal intervals. Figure 4and Figure 5 As shown, the end of the semi-enclosed wide groove 134 away from the center tread rib 110 can extend to the tire sidewall.
[0058] In addition, such as Figure 1 As shown, a connecting groove 133 is provided at one end of the semi-enclosed wide groove 134 near the central patterned rib 110, and the connecting groove 133 communicates with both the semi-enclosed wide groove 134 and the main groove 140. The cross-sectional shape of the connecting groove 133 can be U-shaped. The depth of the semi-enclosed wide groove 134 generally exhibits the following trend: the closer to the connecting groove 133, the greater the depth. The maximum depth of the semi-enclosed wide groove 134 is greater than the depth of the connecting groove 133.
[0059] In the tread structure provided in this embodiment of the utility model, by setting multiple first fine grooves 111 arranged with different slopes on the central tread rib 110, the central tread rib 110 is divided into several pieces. This breaks the inherent ground contact area of each part of the divided central tread rib 110, making the strength of the central tread rib 110 irregular. While ensuring the overall strength and large ground contact area of the central tread rib 110, the rigidity of the central tread rib 110 is effectively divided, and the stress distribution in the central part is prioritized. This effectively disperses the ground contact frequency in the central part, reduces the regular stress deformation of the central tread rib 110 during vehicle operation, thereby improving wear resistance and reducing rolling resistance. Moreover, while ensuring the grip and wear performance of the tire center, the ride comfort is improved.
[0060] By setting main grooves 140 between the center tread rib 110 and the side tread rib 120 and between the side tread rib 120 and the shoulder tread rib 130, water can be quickly expelled from the tire during driving on wet roads, providing excellent wet grip performance, cornering stability, and precise steering response, which is beneficial to improving dry and wet grip performance. By setting multiple semi-enclosed wide grooves 134 on the shoulder tread rib 130, the airflow direction of the tire shoulder during driving can be effectively blocked, which helps to reduce driving noise.
[0061] In some embodiments, such as Figure 1 As shown, the first fine groove 111 has first Y-shaped grooves 112 at both ends, and the first Y-shaped grooves 112 are connected to the first fine groove 111 and the main groove 140, respectively. The width of the first Y-shaped groove 112 can be set from 0.4 mm to 4 mm.
[0062] It is understandable that by providing first Y-shaped grooves 112 at both ends of the first fine groove 111, when the tire is traveling on a wet road surface, the first Y-shaped grooves 112 can quickly and effectively cut into the surface of the water film, improving the drainage performance of the tread pattern on the central tread rib 110. In some examples, such as Figure 2 As shown, the cross-sectional shape of the first Y-shaped groove 112 can be a groove structure 150 in the shape of a capital letter "Y". In other examples, such as Figure 3 As shown, the cross-sectional shape of the first Y-shaped groove 112 can be a groove structure 150 in the shape of a lowercase letter "y". In addition, the number of first Y-shaped grooves 112 located at the same end of the first fine groove 111 is not limited to one. Multiple first Y-shaped grooves 112 can be continuously and sequentially arranged at the same end of the first fine groove 111. Moreover, the opening of the first Y-shaped groove 112 generally exhibits the following pattern: the further away from the first fine groove 111, the larger the opening size.
[0063] In some embodiments, such as Figure 1 As shown, the side patterned rib 120 is also provided with a third fine groove 123. The third fine groove 123 is U-shaped and is connected to the second fine groove 121 so that the second fine groove 121 and the third fine groove 123 together form a trident-shaped patterned structure. Moreover, the two ends of the third fine groove 123 penetrate the side wall of the main groove 140 away from the central patterned rib 110, so that the third fine groove 123 can be connected to the main groove 140.
[0064] In this embodiment, as Figure 1 As shown, the second fine groove 121, which has an odd number, is provided with a third fine groove 123. The long side of the third fine groove 123 extends along the extension direction of the side patterned rib 120. The two short sides of the third fine groove 123 are not perpendicular to the long side of the third fine groove 123; the two short sides of the third fine groove 123 are parallel and tend to be parallel to the second fine groove 121. The center position of the third fine groove 123 coincides with the center position of the second fine groove 121 and they are interconnected. Specifically, the center position of the long side of the third fine groove 123 falls on the center position of the second fine groove 121.
[0065] Furthermore, the dimensions of the multiple third fine grooves 123 vary along the length of the side patterned ribs 120. Specifically, as... Figure 1 As shown, at least a portion of the third fine groove 123 has different long side dimensions. The width of the second fine groove 121 can be set to a range of 0.4 mm to 4 mm, and its arc length can be set to a range of 15 mm to 50 mm. The width of the third fine groove 123 can be set to a range of 0.4 mm to 4 mm, and its total length can be set to a range of 10 mm to 120 mm.
[0066] Understandably, the side tread ribs 120 are intermittently cut with multiple second fine grooves 121 and multiple third fine grooves 123, creating a unique pattern on the side tread ribs 120. This enhances the mutual support of the tread rubber in this area during deformation, reducing excessive deformation and effectively maintaining the tire's comfort and handling performance. Simultaneously, it increases the effective contact area in this area, thus ensuring good overall tire handling and wear resistance. Furthermore, the varying sizes of the third fine grooves 123, through this irregular design, disrupt the natural frequency of the pattern on the side tread ribs 120, causing noise waves of different frequencies to cancel each other out during tire operation, thereby reducing driving noise.
[0067] Of course, it is not excluded that in other embodiments, each of the second fine grooves 121 is provided with a third fine groove 123. In addition, it is not excluded that in other embodiments, each third fine groove 123 has the same size.
[0068] In some embodiments, such as Figure 1 As shown, a second Y-shaped groove 122 is provided at one end of the second fine groove 121 near the central patterned rib 110, and the second Y-shaped groove 122 is connected to both the second fine groove 121 and the main groove 140. It is understood that by providing the second Y-shaped groove 122 on the second fine groove 121, when a vehicle travels on a wet road surface, the second Y-shaped groove 122 can quickly and effectively penetrate the water film surface, improving the drainage performance of the pattern on the side patterned rib 120. In some examples, the cross-sectional shape of the second fine groove 121 is U-shaped; in other examples, the cross-sectional shape of the second fine groove 121 is Y-shaped; and in still other examples, the cross-sectional shape of the second fine groove 121 is trapezoidal, such as a right trapezoid or an isosceles trapezoid.
[0069] In some embodiments, such as Figure 1 As shown, the shoulder tread rib 130 also has multiple fourth fine grooves 131. These fourth fine grooves 131 are long and straight, and are arranged at an angle. The fourth fine grooves 131 and semi-enclosed wide grooves 134 are alternately arranged along the circumference of the tread structure and are spaced apart. The length of the semi-enclosed wide grooves 134 is greater than that of the fourth fine grooves 131. The fourth fine grooves 131 and semi-enclosed wide grooves 134 located on the same shoulder tread rib 130 are aligned in the same direction of inclination. In this embodiment, both the semi-enclosed wide grooves 134 and the fourth fine grooves 131 are arranged at unequal intervals.
[0070] The width of the fourth fine groove 131 can be set from 0.4 mm to 4 mm, and the depth can be set from 0.1 mm to 10 mm. The width of the semi-enclosed wide groove 134 can be set from 2 mm to 10 mm, and the depth can be set from 0.5 mm to 8 mm.
[0071] It is understood that in this embodiment, the tire shoulder tread rib 130 is cut by the semi-enclosed wide groove 134 and the fourth fine groove 131, so that multiple tread blocks are formed on the tire shoulder tread rib 130. This ensures good grip and wear performance of the tire shoulder, and also increases the pitch of the tread blocks, effectively increasing the contact area of the tread blocks and enhancing the rigidity of the tread blocks, which is beneficial to improving the steering and handling stability of the tire. At the same time, the semi-enclosed wide groove 134 promotes an increase in the contact area of the tire in the middle and later stages of use, ensuring good tire grip and thus ensuring good overall tire handling performance. Moreover, the semi-enclosed wide groove 134 can effectively block the airflow direction of the tire shoulder during vehicle operation, thereby reducing driving noise.
[0072] Of course, it is not excluded that in other embodiments, the semi-enclosed wide groove 134 and the fourth fine groove 131 are arranged at equal intervals.
[0073] In this embodiment, as Figure 1 As shown, the semi-enclosed wide groove 134 has a Y-shaped cross-section. Specifically, a beveled groove 135 is provided at the opening of the semi-enclosed wide groove 134. The beveled groove 135 communicates with the semi-enclosed wide groove 134, and the wall surface of the beveled groove 135 is in contact with the wall surface of the semi-enclosed wide groove 134, causing the cross-sectional shape of the semi-enclosed wide groove 134 to be Y-shaped. A third Y-shaped groove 132 is provided at one end of the fourth fine groove 131 near the central patterned rib 110. Moreover, the third Y-shaped groove 132 communicates with both the fourth fine groove 131 and the main groove 140.
[0074] Understandably, by setting a third Y-shaped groove 132 at one end of the fourth fine groove 131, when the vehicle is driving on a wet road surface, the third Y-shaped groove 132 can quickly and effectively cut into the water film layer of the wet road surface, improving the water drainage performance of the tread pattern on the tire shoulder rib 130, thereby ensuring good overall tire grip performance. The number of third Y-shaped grooves 132 located at one end of the fourth fine groove 131 is not limited to one; multiple third Y-shaped grooves 132 can be set continuously at one end of the fourth fine groove 131. Moreover, the opening of the third Y-shaped groove 132 generally exhibits the following pattern: the further away from the fourth fine groove 131, the larger the opening size.
[0075] By providing groove structures 150, such as the first Y-shaped groove 112, the second Y-shaped groove 122, and the third Y-shaped groove 132, on the tread structure, when the tire travels on a wet road surface, the groove structures 150 can quickly break up the water film surface of the wet road surface by cross-slapping the road surface, thus achieving good drainage performance at high speeds. For example, the first Y-shaped groove 112 is formed by oblique cutting on the basis of the first fine groove 111. In addition, the semi-enclosed wide groove 134 is larger in width than the first fine groove 111, the second fine groove 121, the third fine groove 123, and the fourth fine groove 131.
[0076] like Figures 1 to 5 As shown, the tire according to the second aspect embodiment of this utility model is a pneumatic tire product for passenger cars, which can be installed on ordinary passenger cars, especially ride-hailing vehicles. The tire of this embodiment has the advantages of high grip, high wear resistance, excellent driving comfort and handling in both dry and wet conditions, as well as low driving noise, and can meet the usage requirements of highways and ordinary urban roads. The tire tread has the tread structure as in the first aspect embodiment.
[0077] In this embodiment, as Figure 1 , Figure 4 and Figure 5 As shown, the tire tread structure consists of multiple tread units with different pitches and symmetrical left and right centers, where the left and right directions are axial. Specifically, the tread structure can be formed by stacking 2 to 6 tread pitch units along the circumference according to a simulation-optimized sequence. Each tread pitch unit contains pitches of different lengths and numbers, with pitch lengths ranging from 18mm to 48mm and the number of pitches ranging from 40 to 100. It can be understood that the tire pitch refers to the circumferential spacing between the tread blocks or grooves on the tire tread.
[0078] The tire in this embodiment features a symmetrical tread pattern design, consisting of a central tread rib 110 and symmetrical tread blocks on both sides. By specially designing the groove shapes of the appropriately wide central tread rib 110, the two side tread ribs 120, and the two shoulder tread ribs 130, the tire achieves high grip and high wear resistance, while maximizing comfort and handling performance, and resulting in low driving noise and rolling resistance.
[0079] It is understandable that in the tire industry, the patterns on the side tread ribs 120 and the shoulder tread ribs 130 can overlap after rotating 180°, thus they are centrally symmetrical patterns. In this embodiment, the second fine grooves 121 and the third fine grooves 123 on the two side tread ribs 120 are symmetrically arranged, and the semi-enclosed wide grooves 134 and the fourth fine grooves 131 on the two shoulder tread ribs 130 are symmetrically arranged.
[0080] In the tire provided in the second aspect embodiment of this utility model, by providing the tread structure of the first aspect embodiment on the tire tread, the tire can have good dry and wet grip and wear resistance, while also having good driving comfort and reducing driving noise and rolling resistance.
[0081] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0082] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A tread structure, characterized in that, include: The center tread rib, side tread rib, and shoulder tread rib all extend circumferentially along the tread structure. The tire has two side tread ribs, one on each side of the central tread rib. The tire shoulder has two tread ribs, one on each side of the two side tread ribs furthest from the central tread rib. Main grooves are provided between the central tread rib and the side tread rib, and between the side tread rib and the shoulder tread rib; The central patterned rib is provided with a plurality of first fine grooves arranged at intervals along its extension direction. The plurality of first fine grooves are inclined with different slopes, and the two ends of the first fine grooves respectively penetrate the sidewall of the adjacent main groove. The side patterned ribs are provided with a plurality of second fine grooves arranged at intervals along their extension direction, and the two ends of the second fine grooves respectively penetrate the sidewall of the adjacent main groove. The tire shoulder tread ribs are provided with a plurality of semi-enclosed wide grooves arranged at intervals along their extension direction, and one end of each semi-enclosed wide groove penetrates the sidewall of the adjacent main groove.
2. The tread structure according to claim 1, characterized in that, The two side tread ribs and the two shoulder tread ribs are symmetrically arranged about the central tread rib; and / or, The first fine groove has first Y-shaped grooves at both ends, and the first Y-shaped grooves are respectively connected to the first fine groove and the main groove; and / or, The first fine grooves are arranged at equal intervals or at unequal intervals.
3. The tread structure according to claim 1, characterized in that, All of the second fine grooves are arc-shaped, and the concave and convex directions of the second fine grooves located on the two side patterned ribs are opposite.
4. The tread structure according to claim 1 or 3, characterized in that, The side patterned rib is also provided with a U-shaped third fine groove, which is connected to the second fine groove, and the two ends of the third fine groove pass through the side wall of the main groove away from the central patterned rib.
5. The tread structure according to claim 4, characterized in that, The second fine grooves are arranged at equal or unequal intervals, and the second fine grooves with odd numbers are provided with the third fine groove.
6. The tread structure according to claim 5, characterized in that, The center position of the third fine groove coincides with and is connected to the center position of the second fine groove; and / or, The dimensions of the plurality of third fine grooves are different along the length direction of the side patterned ribs; and / or, The second fine groove has a second Y-shaped groove at one end near the central patterned rib, and the second Y-shaped groove is connected to both the second fine groove and the main groove; and / or, The cross-sectional shape of the second fine groove is Y-shaped or trapezoidal.
7. The tread structure according to claim 1, characterized in that, The semi-enclosed wide groove is long and straight, and is inclined. The inclination direction of the semi-enclosed wide grooves located on the two tire shoulder tread ribs is the same.
8. The tread structure according to claim 7, characterized in that, The shoulder tread rib is also provided with a plurality of long, straight fourth fine grooves. The fourth fine grooves are inclined and are arranged alternately with the semi-enclosed wide grooves along the circumference of the tread structure. The fourth fine grooves and the semi-enclosed wide grooves on the same shoulder tread rib are in the same inclination direction.
9. The tread structure according to claim 8, characterized in that, The semi-enclosed wide trenches and the fourth fine trenches are arranged at equal or unequal intervals; and / or, The semi-enclosed wide groove has a Y-shaped cross-section. The end of the semi-enclosed wide groove near the central patterned rib is provided with a connecting groove, which is connected to both the semi-enclosed wide groove and the main groove. The end of the fourth fine groove near the central patterned rib is provided with a third Y-shaped groove, which is connected to both the fourth fine groove and the main groove.
10. A tire, characterized in that, The tire tread has the tread structure as described in any one of claims 1 to 9.