All-steel tire tread pattern

Abstract

The present invention provides a tread pattern for all-steel tires, which relates to the technical field of tire production and includes: tread grooves; four longitudinally arranged tread grooves divide the tire tread into a first shoulder, a first tread block, a central tread block, a second tread block, and a second shoulder in sequence along a first direction; a plurality of transverse grooves are longitudinally distributed on the surfaces of the first tread block, the central tread block, and the second tread block, and abrasive patterns are further provided on one side of the first tread block and the second tread block that is close to the transverse grooves; the tread grooves extend in a wavy shape towards the groove bottom, the groove wall angle α at the top of the tread groove is 10° to 15°, and the groove wall angle β at the bottom of the tread groove is 20° to 25°. The present invention solves the problems in the prior art that the tread pattern of all-steel tires cannot enhance the grip and foreign objects such as stones are often stuck in the tread surface, and achieves the technical effects of improving the performance of all-steel tires under various road conditions and increasing the stability and safety of vehicles during high-speed driving.

Description

Technical Field

[0001] The present invention relates to the technical field of tire production, and particularly to a tread pattern of an all-steel tire. Background Art

[0002] Automobile tires are the only part of a vehicle that comes into contact with the road surface. Tires not only bear the entire weight of the vehicle but also are responsible for providing traction, braking force, and driving stability. The manufacture of tires needs to consider wear resistance, grip, anti-aging property, heat resistance, and adaptability to different road surfaces. With the development of technology, modern tires are usually made of synthetic rubber, steel wires, and other composite materials to ensure good performance under various climate and road conditions.

[0003] All-steel tires belong to a type of automobile tires. The multi-layer steel cord structure of all-steel tires can withstand greater pressure and load, thus having a longer service life and better durability, and is usually used for heavy-duty vehicles such as freight trucks and buses. The tread pattern of all-steel tires can provide good road braking effect for heavy-duty vehicles.

[0004] The existing designs of tire tread patterns are all for semi-steel tires suitable for small vehicles; as a result, the functional tread pattern designs of existing all-steel tires are relatively single, and the performance of the tires under different road conditions has not been fully considered; moreover, the driving environment of all-steel tires is often high-load and rough and harsh road conditions. Therefore, the tread patterns of all-steel tires designed in the prior art cannot enhance the grip during driving, and foreign objects such as stones are often easily stuck in the tread. Summary of the Invention

[0005] The purpose of the present invention is to provide a tread pattern of an all-steel tire to alleviate the problems that the tread pattern of the existing all-steel tire cannot enhance the grip during driving and foreign objects such as stones are often stuck in the tread.

[0006] The present invention provides a tread pattern of an all-steel tire, including: tread grooves;

[0007] Four longitudinally opened tread grooves divide the tire tread into a first shoulder, a first tread block, a central tread block, a second tread block, and a second shoulder in sequence along a first direction;

[0008] A plurality of transverse grooves are longitudinally distributed on the surfaces of the first tread block, the central tread block, and the second tread block, and abrasive patterns are also provided on one side of the first tread block and the second tread block that is close to the transverse grooves;

[0009] The tread grooves extend in a wavy shape towards the groove bottom, the groove wall angle α at the top of the tread grooves is 10° - 15°, and the groove wall angle β at the bottom of the tread grooves is 20° - 25°.

[0010] Further, the four longitudinally formed tread grooves are symmetrically arranged in pairs with the central tread block as the center line.

[0011] Further, the width of the tread groove is 12 mm to 14 mm, and the depth of the tread groove is 13 mm to 15 mm.

[0012] Further, one surface of the tread groove is a first folded edge, and the other surface of the tread groove is a second folded edge; the groove wall angle α is the top wall angle at the top of the tread groove, and the groove wall angle β is the groove wall angle at the bottom of the tread groove.

[0013] Further, the depth from the corner of the first folded edge 101 and the second folded edge 102 to the bottom of the groove is 6.5 mm to 7.5 mm.

[0014] Further, the transverse groove includes two inclined portions extending from the edge of the tread groove towards the middle of the tread surface, and the ends of the inclined portions are connected with vertical portions, and the two vertical portions are arranged in parallel.

[0015] Further, the inclined portion includes a deep groove and a fine groove, the length of the deep groove is 2 mm to 3 mm, the deep groove is communicated with the tread groove, the fine groove is communicated with the vertical portion, the depth of the deep groove is 1.5 mm to 2 mm, and the depths of the fine groove and the vertical portion are 0.5 mm to 1 mm.

[0016] Further, the width of the transverse groove is 0.5 mm to 2 mm.

[0017] Further, the bottom of the transverse groove is in a round head shape.

[0018] Further, the matte pattern is velvet or rubber grinding.

[0019] Beneficial effects:

[0020] The present invention provides a tread pattern for an all-steel tire, including: tread grooves; the four longitudinally formed tread grooves divide the tire tread into a first shoulder, a first tread block, a central tread block, a second tread block and a second shoulder along the first direction in sequence; by symmetrically designing the tread pattern with the central groove of the tread surface as the reference, the patterns on both sides are exactly the same, ensuring the balanced performance of the tire, and maintaining good grip whether on dry or wet ground.

[0021] A plurality of transverse grooves are longitudinally distributed on the surfaces of the first tread block, the central tread block and the second tread block, and matte patterns are also provided on one side of the first tread block and the second tread block that are close to the transverse grooves. By combining the transverse grooves and the matte patterns on the first tread block and the second tread block, the contact area between the tire and the ground can be increased, thereby increasing the friction force and the grip. On a dry road surface, the block-shaped areas of the pattern can better generate friction with the ground, providing stable driving performance. And the central tread block is the highest point of the tread arc, and the transverse grooves can enhance the stability of the tire;

[0022] The tread grooves extend in a wavy shape towards the groove bottom. The groove wall angle α at the top of the tread groove is 10° - 15°, and the groove wall angle β at the bottom of the tread groove is 20° - 25°. By providing the tread grooves with corner edges, stones can be effectively blocked from entering the groove walls, improving the stone trapping resistance rate of the tire. Brief Description of the Drawings

[0023] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 Structural schematic diagram of the tread pattern of a steel radial tire provided by an embodiment of the present invention;

[0025] Figure 2 Schematic diagram of an overall tire with the tread pattern of a steel radial tire provided by an embodiment of the present invention;

[0026] Figure 3 Partial enlarged view of the first and second tread blocks with the tread pattern of a steel radial tire provided by an embodiment of the present invention;

[0027] Figure 4 Partial enlarged view of the central tread block with the tread pattern of a steel radial tire provided by an embodiment of the present invention;

[0028] Figure 5 Structural schematic diagram of the tread pattern of a steel radial tire provided by an embodiment of the present invention with a sectional view identifier;

[0029] Figure 6 Schematic sectional view at A - A of the tread pattern of a steel radial tire provided by an embodiment of the present invention;

[0030] Figure 7 Schematic sectional view at B - B of the tread pattern of a steel radial tire provided by an embodiment of the present invention;

[0031] Figure 8 Schematic sectional view at C - C of the tread pattern of a steel radial tire provided by an embodiment of the present invention;

[0032] Figure 9 Schematic diagram of the inclined part in the tread pattern of a steel radial tire provided by an embodiment of the present invention.

[0033] Icon: 1 - tread groove; 101 - first broken line edge; 102 - second broken line edge; 2 - first shoulder; 3 - first tread block; 4 - center tread block; 5 - second tread block; 6 - second shoulder; 7 - transverse groove; 701 - inclined portion; 702 - vertical portion; 703 - deep groove; 704 - fine groove; 8 - abrasive pattern. Detailed implementation

[0034] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Usually, the components of the embodiments of the present invention described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0036] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0037] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0038] In addition, terms such as "horizontal", "vertical", "hanging" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0039] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "installed", "connected", and "joined" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0040] The following will describe in detail some embodiments of the present invention with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0041] Embodiment 1

[0042] A tread pattern of an all-steel tire provided by the present invention, as Figure 1 、 Figure 2 shown, includes: a tread groove 1;

[0043] Four longitudinally opened tread grooves 1 sequentially divide the tire tread into a first shoulder 2, a first tread block 3, a central tread block 4, a second tread block 5, and a second shoulder 6 along a first direction;

[0044] A plurality of transverse grooves 7 are longitudinally distributed on the surfaces of the first tread block 3, the central tread block 4, and the second tread block 5, and a matte pattern 8 is further provided on one side of the first tread block 3 and the second tread block 5 that is close to the transverse groove 7;

[0045] The tread groove 1 extends in a wavy shape towards the groove bottom, the groove wall angle α at the top of the tread groove 1 is 10° - 15°, and the groove wall angle β at the groove bottom of the tread groove 1 is 20° - 25°.

[0046] Specifically, four longitudinally arranged tread grooves 1 are opened along the first direction on the tire tread, where the first direction is the direction horizontal to the ground, that is, arranged transversely in sequence. The tread of the all-steel tire is divided by the four tread grooves 1 to form a first shoulder 2, a first tread block 3, a central tread block 4, a second tread block 5, and a second shoulder 6; the all-steel tire pattern symmetrically arranged with the center of the tread as the reference, and the patterns on both sides are exactly the same, which can ensure the balanced performance of the tire and maintain good grip whether on dry or wet ground. And no pattern is provided on the first shoulder 2 and the second shoulder 6, which can reduce the frictional force between the tire and the ground, thereby reducing the rolling resistance and improving the fuel economy of the vehicle. At the same time, since the all-steel tire is applied to heavy-duty vehicles, the noise is relatively large, and no pattern is provided on the first shoulder 2 and the second shoulder 6 can also reduce the noise generated when the tire is running.

[0047] As Figure 3 , Figure 4As shown, transverse grooves 7 are arranged on the surfaces of the first tread block 3, the central tread block 4, and the second tread block 5. The transverse grooves 7 are formed by two oppositely arranged grooves. The two opposite transverse grooves 7 both spread from the two side tread grooves 1 towards the center of the tread, and can be combined to form a "s"-shaped groove. A number of transverse grooves 7 are distributed longitudinally in a circle on the surface of the tire. Since the central tread block 4 is the highest point of the transverse tread arc, the use of the transverse grooves 7 can enhance the stability of the tire. On the inner sides of the first tread block 3 and the second tread block 5, abrasive patterns 8 are closely provided. The shape of the abrasive patterns 8 is exactly the same as that of the transverse grooves 7. The abrasive patterns 8 have no thickness and are the added materials during tire manufacturing. They do not protrude from the tread surface of the tire and are in a matte shape, which can increase the grip of the tire and is suitable for the heavy-duty driving environment of all-steel tires. Combining the transverse grooves 7 and the abrasive patterns 8 can increase the contact area between the tire and the ground, thereby increasing the friction and grip. On dry roads, the block areas of the tread can better generate friction with the ground and provide stable driving performance.

[0048] The tread grooves 1 extend in a wavy shape towards the bottom of the groove, that is, both sides of the four tread grooves 1 are bent. Compared with the traditional tread grooves 1 directly using an inverted T-shaped inclined surface, the wavy tread grooves 1 can effectively prevent stones from being stuck into the bottom of the groove through the groove walls of the tread grooves 1, and can improve the stone trapping resistance rate of the tire. At the same time, the groove wall angle α at the top of the tread groove 1 is 10° - 15°, and the groove wall angle β at the bottom of the tread groove 1 is 20° - 25°.

[0049] Embodiment 2

[0050] In the embodiment of the present invention, as Figure 5 、 Figure 6 and Figure 7 shown, the four longitudinally opened tread grooves 1 are symmetrically arranged in pairs with the central tread block 4 as the midline.

[0051] The width of the tread groove 1 is 12 mm - 14 mm, and the depth of the tread groove 1 is 13 mm - 15 mm.

[0052] One surface of the tread groove 1 is the first folded edge 101, and the other surface of the tread groove 1 is the second folded edge 102; the groove wall angle α is the top wall angle at the top of the tread groove 1, and the groove wall angle β is the groove wall angle at the bottom of the tread groove 1.

[0053] The depth from the corner of the first folded edge 101 and the second folded edge 102 to the bottom of the groove is 6.5 mm - 7.5 mm.

[0054] Specifically, there are four longitudinally opened tread grooves 1 on the tire surface. Among them, the two tread grooves 1 between the first shoulder 2 and the first tread block 3, and between the first tread block 3 and the central tread block 4 are identical; the two tread grooves 1 between the central tread block 4 and the second tread block 5, and between the second tread block 5 and the second shoulder 6 are identical, so that the four tread grooves are symmetrically arranged in pairs with the central tread block 4 as the center line; when the vehicle is driving on a wet road surface, rainwater will enter between the tire and the road surface; the four symmetrically arranged longitudinal tread grooves 1 can effectively drain the water from the contact area between the tire and the road surface; and the four symmetrically arranged longitudinal tread grooves 1 make the pressure distribution of each part of the tire relatively balanced, enabling the tire to maintain good stability under different road conditions. On a road surface with a certain slope, it can ensure that the tire grip is evenly distributed, which helps the vehicle climb or descend the slope stably.

[0055] Specifically, a width of 12 mm to 14 mm allows more water to quickly enter the tread groove 1, while a depth of 13 mm to 15 mm provides sufficient channel space for the water flow. Such width and depth dimensions can ensure that the tread groove 1 has sufficient volume to drain water. Moreover, the width of the tread groove is between 12 mm and 14 mm, ensuring that the tire size and distribution are reasonable, and it will not cause the tread block to be too small due to the overly wide tread groove, which affects the grip.

[0056] Specifically, taking the two tread grooves 1 on the left side as an example, as Figure 6 shown, one surface of the tread groove 1 is the first broken line edge 101, and the other surface of the tread groove 1 is the second broken line edge 102; among them, the first broken line edge 101 includes three broken line parts, and the three broken line parts extend from the groove surface of the tread groove 1 to the groove bottom in a stepped manner; the second broken line part 102 also includes three broken line parts, where the first broken line part extends upward to the right, the second broken line part extends upward to the left, and the third broken line also extends upward to the right, and then extends from the groove bottom of the tread groove 1 to the groove surface. The two symmetrically arranged tread grooves 1 on the right side are as Figure 7 shown.

[0057] Among them, the groove wall angle α is the top wall angle at the top of the tread groove 1, and the groove wall angle β is the groove wall angle at the bottom of the tread groove 1.. And the range of the groove wall angle α is 10° to 15°, and the range of the groove wall angle β is 20° to 25°, so that the tread groove 1 can effectively prevent stones from being stuck at the groove bottom through the groove wall of the tread groove 1, which can improve the stone trapping prevention rate of the tire. At the same time, during driving, the groove walls at this angle help to shake off dirt, stones and other debris in the tread groove, keep the tread groove clean, and thus maintain the good drainage and grip performance of the tire.

[0058] Specifically, the depth of the first fold line edge 101 and the depth of the corner of the second fold line edge 102 are both 6.5 mm to 7.5 mm. That is, the first fold line edge 101 and the second fold line edge 102 are both bent from the middle, so that the height from the bent portion to the groove bottom is 6.5 mm to 7.5 mm, while ensuring drainage, the probability of stones getting stuck in the pattern groove 1 is increased to the greatest extent.

[0059] Comparative Example

[0060] The comparative example is a groove in an inverted trapezoidal shape, wherein the groove bottom and the groove wall are all inclined surfaces with an inclination angle of 18°; the width and height of the groove are the same as those in Example 2, wherein the width is 13.5 mm and the height is 13 mm, but the stone-pinching prevention rate in Example 2 of the present invention can be increased by 20%; accordingly, the width of the groove 1 in Example 2 of the present invention is changed to the optimal 12 mm, which can prevent smaller stones from being stuck in the groove 1, and the stone-pinching prevention rate can be increased by 30%.

[0061] Example 3

[0062] In an embodiment of the present invention, Figure 3 , Figure 4 and Figure 9 As shown, the transverse groove 7 includes two inclined portions 701 extending from the edge of the groove 1 to the middle of the tread, and the ends of the inclined portions 701 are connected to vertical portions 702, and the two vertical portions 702 are arranged in parallel.

[0063] like Figure 9 As shown, the inclined portion 701 includes a deep groove 703 and a fine groove 704. The length of the deep groove 703 is 2 mm to 3 mm. The deep groove 703 is connected to the pattern groove 1. The fine groove 704 is connected to the vertical portion 702. The depth of the deep groove 703 is 1.5 mm to 2 mm. The depth of the fine groove 704 and the vertical portion 702 is 0.5 mm to 1 mm.

[0064] The width of the transverse groove 7 is 0.5 mm to 2 mm.

[0065] like Figure 8 As shown, the bottom of the transverse groove 7 is in the shape of a round head.

[0066] The frosted pattern 8 is velvet, rubber frosted or ceramic particles.

[0067] Specifically, taking the transverse groove 7 on the first tread block 3 as an example, one transverse groove 7 includes an inclined portion 701 extending from the first tread groove 1 on the left side to the surface of the central part of the first tread block 3, and a vertical portion 702 extending downward from the central part; another transverse groove 7 includes an inclined portion 701 extending from the second tread groove 1 on the left side to the surface of the central part of the first tread block 3, and a vertical portion 702 extending upward from the central part, wherein the two vertical portions 702 are arranged in parallel. Correspondingly, the two transverse grooves of the central tread block 4 extend from the second tread groove 1 and the third tread groove 1 on the left side to the surface of the central tread block 4 respectively; the two transverse grooves of the second tread block 5 extend from the third tread groove 1 and the fourth tread groove 1 on the left side to the surface of the central part respectively. By combining the transverse groove 7 with the matte pattern 8, the contact area of the tread block is increased to improve the grip of the tire.

[0068] Specifically, the inclined portion 701 includes a deep groove 703 and a fine groove 704. The transverse groove 7 with a deeper outer part and a shallower inner part is beneficial to the exclusion of gas in the tread, increasing the grip while reducing the noise. The length of the deep groove 703 is 2 mm to 3 mm, the deep groove 703 communicates with the tread groove 1, and the fine groove 704 communicates with the vertical portion 702, forming a relatively complex and interconnected drainage network; when the vehicle is driving on a wet and slippery road surface, the accumulated water can be quickly discharged through these grooves, reducing the formation of the water film, thereby reducing the risk of hydroplaning, improving the grip and handling stability of the all-steel tire on wet land, ensuring the safe driving of the vehicle, and increasing the anti-hydroplaning ability of the tire. The depth of the deep groove 703 is 1.5 mm to 2 mm, and the depths of the fine groove 704 and the vertical portion 702 are 0.5 mm to 1 mm. When the vehicle is turning, it can help the all-steel tire better fit the road surface, making the turning more accurate and stable, reducing the risk of sideslip and fishtailing, and increasing the stability during turning.

[0069] Specifically, the bottom of the transverse groove 7 is in a round head shape. The use of a round head shape at the bottom of the transverse groove 7 can also reduce the stress concentration at the groove bottom, thereby improving the tear resistance of the groove bottom. At the same time, it can make the flow of water in the transverse groove smoother, reduce the resistance of the water flow, and thus more quickly discharge the accumulated water from the contact area between the tire and the ground, improving the grip and handling stability of the tire on a wet and slippery road surface.

[0070] Specifically, the matte pattern 8 is velvet or rubber matte. Velvet or rubber matte can increase the friction between the all-steel tire and the ground. When driving on a dry road surface, it can make the tire better grip the ground, improve the acceleration, braking and turning performance of the vehicle, enhance the handling stability, and reduce the risk of sideslip and fishtailing.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tread pattern for an all-steel tire, characterized in that, Including: Groove (1); The four longitudinally provided grooves (1) divide the tire tread into a first shoulder (2), a first tread block (3), a central tread block (4), a second tread block (5), and a second shoulder (6) in sequence along a first direction; A plurality of transverse grooves (7) are longitudinally distributed on the surfaces of the first tread block (3), the central tread block (4), and the second tread block (5). On one side of the first tread block (3) and the second tread block (5) that is in close contact with the transverse grooves (7), there are also provided abrasive patterns (8); The groove (1) extends in a wavy shape towards the groove bottom. The groove wall angle α at the top of the groove (1) is 10° - 15°, and the groove wall angle β at the bottom of the groove (1) is 20° - 25°; The transverse groove (7) includes two inclined portions (701) extending from the edge of the groove (1) towards the middle of the tread. The ends of the inclined portions (701) are connected to a vertical portion (702), and the two vertical portions (702) are arranged in parallel; The inclined portion (701) includes a deep groove (703) and a fine groove (704). The length of the deep groove (703) is 2 mm - 3 mm. The deep groove (703) communicates with the groove (1). The fine groove (704) communicates with the vertical portion (702). The depth of the deep groove (703) is 1.5 mm - 2 mm, and the depths of the fine groove (704) and the vertical portion (702) are 0.5 mm - 1 mm; The width of the transverse groove (7) is 0.5 mm - 2 mm; The bottom of the transverse groove (7) is in a round head shape.

2. The tread pattern of an all-steel tire according to claim 1, characterized in that, The four longitudinally provided grooves (1) are symmetrically arranged in pairs with the central tread block (4) as the center line.

3. The full-steel tire tread pattern according to claim 2, wherein, The width of the groove (1) is 12 mm - 14 mm, and the depths of the grooves (1) are all 13 mm - 15 mm.

4. The tread pattern of an all-steel tire according to claim 3, characterized in that, One side surface of the groove (1) is a first broken line side (101), and the other side surface of the groove (1) is a second broken line side (102); the groove wall angle α is the top wall angle at the top of the groove (1), and the groove wall angle β is the groove wall angle at the bottom of the groove (1).

5. The full-steel tire tread pattern according to claim 4, characterized in that, The depths from the corners of the first broken line side (101) and the second broken line side (102) to the groove bottom are both 6.5 mm - 7.5 mm.

6. The full-steel tire tread pattern according to claim 1, characterized in that, The abrasive pattern (8) is velvet or rubber abrasive.

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