Full steel load tire without inner tube type meridian tire tread band knurl pattern structure and tire
By designing longitudinal and lateral tread grooves on the tread of tubeless tires and combining them with knurling structures, the problems of insufficient directional, drainage, grip and anti-skid performance of tires at high speeds are solved, thereby improving the high-speed stability and service life of the tires.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 双钱集团(新疆)昆仑轮胎有限公司
- Filing Date
- 2025-06-27
- Publication Date
- 2026-07-03
AI Technical Summary
Existing tubeless tires have insufficient directional, drainage, grip, stone removal and anti-skid performance at high speeds, and the tread design results in high rolling resistance and low wear resistance.
The all-steel tubeless radial truck tire features a knurled tread pattern. The design includes longitudinal and lateral tread grooves. Knurling is provided on both sides of the longitudinal tread grooves, while the lateral tread grooves are shallower and narrower. Combined with the knurling design and vent holes, it forms an independent small unit structure, which enhances the tire's directional, drainage, and anti-skid performance, while also improving stone removal and heat dissipation.
It achieves good guidance, drainage, grip and anti-skid performance of the tire at high speeds, reduces rolling resistance, extends tire life, and improves aesthetics and wear resistance.
Smart Images
Figure CN224447362U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of tire design technology, and relates to a tread structure with knurled pattern for an all-steel tubeless radial truck tire and the tire itself. Background Technology
[0002] Tires are annular, elastic rubber products mounted on various vehicles or machinery for contact with the ground and rolling. Typically mounted on metal rims, tires support the vehicle body, cushion external impacts, ensure contact with the road surface, and guarantee vehicle performance. Tires are often used under complex and harsh conditions, enduring various deformations, loads, forces, and extreme temperatures during operation. Therefore, they must possess high load-bearing capacity, traction, and cushioning performance. Simultaneously, tires also require high wear resistance and flexural strength, as well as low rolling resistance and heat generation. Half of the world's rubber consumption is used in tire production, highlighting the significant rubber consumption involved in tire manufacturing.
[0003] Tire tread designs come in a variety of styles, tailored to different uses and road conditions. These factors should be considered when selecting tires. Tire tread plays a crucial role in overall driving performance. A well-designed tread pattern can not only effectively save fuel and reduce vehicle noise, but also enhance the vehicle's driving, braking, and traction performance on various harsh and slippery road surfaces, thereby improving driving safety.
[0004] There are several main types of tire tread patterns:
[0005] (1) Straight groove pattern, also called ordinary pattern, is a pattern design with vertical grooves as the main feature;
[0006] Features include excellent handling stability, low rotational resistance, low noise, and especially excellent drainage performance, making it less prone to lateral slippage.
[0007] Suitable for walking on flat surfaces;
[0008] Vehicle types used: cars, trucks, and even airplanes;
[0009] Disadvantages: Poor driving and traction;
[0010] (2) Horizontal groove pattern, a pattern design with horizontal grooves as the main feature;
[0011] Features: The horizontal groove pattern provides excellent driving force, braking force and traction, and its wear resistance is also excellent.
[0012] Suitable for rough road surfaces such as gravel roads;
[0013] The vehicles used are mostly industrial and short-to-medium distance vehicles, such as bulldozers, excavators, loaders and other medium and heavy-duty vehicles;
[0014] Disadvantages: High noise level;
[0015] (3) Vertical and horizontal groove pattern, also called composite pattern, which combines the design of vertical groove and horizontal groove patterns;
[0016] Features: It combines the advantages of both longitudinal and transverse groove patterns;
[0017] Suitable for rough road surfaces;
[0018] Disadvantages: It is prone to abnormal wear;
[0019] (4) Block pattern, the pattern is arranged in regular blocks;
[0020] Features include good driving and braking force, providing the power to propel the vehicle forward;
[0021] Suitable for snow, mud, and other uneven surfaces;
[0022] Disadvantages include poor wear resistance and short service life.
[0023] Tubeless tires have high requirements for road performance. The main driving routes for tubeless tires on the market are paved roads and above. The main quality problems of these tires are shoulder gaps, crown gaps, and poor wear resistance. Therefore, the tires have high requirements for tread patterns, which should have good wear resistance and a novel appearance. Straight groove patterns, transverse groove patterns, longitudinal and transverse groove patterns, and block patterns cannot simultaneously have good guidance, drainage, grip, stone removal, and anti-skid performance, and the tires also have low traction or lateral force.
[0024] Patent CN111703258A discloses a tread structure and tire. The tread structure, from the outside to the inside, features an outer shoulder rib, a center rib, and an inner shoulder rib, separated by longitudinal main grooves. The outer shoulder rib has multiple first lateral grooves arranged circumferentially with unequal pitches. The inner shoulder rib has multiple second lateral grooves arranged circumferentially with unequal pitches. The first lateral grooves penetrate the longitudinal main grooves; the second lateral grooves axially penetrate the inner shoulder ribs; the pitch of the first lateral grooves is greater than the pitch of the second lateral grooves; the width of the first lateral grooves is less than the width of the second lateral grooves; the center rib has multiple first sipes with unequal spacing; the first sipes are axially inclined, and at least one end penetrates the adjacent longitudinal main groove. However, this patent only designs the lateral groove pattern, resulting in poor guidance, poor water drainage, and poor grip.
[0025] Patent CN219172103U discloses a tread pattern structure for a light-duty radial tire, including a tire tread composed of nine equal sections. The tread includes main tread blocks and a central longitudinal groove between the main tread blocks. Side longitudinal grooves are provided on both sides of the main tread blocks. Multiple umbrella-shaped shoulder grooves for heat dissipation are distributed on both shoulders of the tire tread. The walls of the central and side longitudinal grooves are zigzag structures. Multiple oblique grooves are provided on the main tread blocks. However, the oblique grooves on the main tread blocks in this patent are relatively wide, dividing the tread blocks into independent units, resulting in relatively high rolling resistance. Furthermore, because the longitudinal grooves are ordinary longitudinal groove patterns, the wear resistance and stone removal performance are relatively low during high-speed driving, and the guiding performance is also poor. Utility Model Content
[0026] The purpose of this utility model is to overcome at least one of the defects of the prior art and provide an all-steel tubeless radial tire with a knurled tread structure and a tire. This utility model achieves good guidance, drainage, grip, stone removal and anti-skid performance of the tire at high speed.
[0027] The objective of this utility model can be achieved through the following technical solutions:
[0028] One of the technical solutions of this utility model is to provide a tread structure with knurled patterns on an all-steel tubeless radial truck tire. This tread structure includes longitudinal grooves and lateral grooves. Three longitudinal grooves, in a zigzag shape and with the same zigzag direction, are evenly distributed along the centerline of the tire tread circumferentially to both sides. The zigzag longitudinal grooves provide good high-speed performance while also offering good anti-skid performance. The longitudinal grooves include a central longitudinal groove and lateral longitudinal grooves. The central longitudinal groove is located at the center of the tire crown, and the lateral longitudinal grooves are evenly distributed on both sides of the central longitudinal groove. The longitudinal grooves are lateral... The tire tread features evenly distributed longitudinally arranged tread blocks, with straight, inclined transverse tread grooves evenly distributed between these blocks. These transverse and longitudinal tread grooves divide the tire tread into individual small units. Since the transverse tread grooves are relatively shallow, they do not completely separate the tread blocks, effectively creating a reinforcing rib between them. This combination of longitudinal and transverse tread patterns enhances the tire's driving performance while maintaining appropriate rolling resistance, ensuring high-speed stability. Overall, the tire exhibits excellent guidance, drainage, grip, and anti-skid performance at high speeds.
[0029] The longitudinal tread grooves have knurling on both sides of the groove walls, which improves the tire's stone removal and heat dissipation performance, and extends the tire's service life.
[0030] Furthermore, the bottom of the knurled groove transitions in a straight line, and the bottom of the groove extends outward along the axial direction of the tire tread to the groove wall of the longitudinal tread groove, forming a groove with gradually increasing width. The flat bottom and inclined groove wall further enhance the stone removal effect and increase the aesthetics.
[0031] Furthermore, the knurling groove has a depth of 0.5 mm, a width of 1 mm, a spacing of 2 mm between adjacent patterns, a straight transition at the bottom of the groove, and a groove width of 0.73 mm at the bottom.
[0032] Furthermore, the bottom of the longitudinal tread groove is rounded, and the bottom of the groove extends radially outward along the tire tread to form a groove with gradually increasing width. The round bottom and inclined groove wall also serve to remove stones and prevent sideslip.
[0033] Furthermore, the longitudinal patterned groove has a depth of 15.6 mm, a tortuosity of 146°, a width of 15 mm, and a radius of 3.13 mm for the arc transition at the bottom of the groove.
[0034] Furthermore, the lateral tread groove includes a wide upper groove and a narrow lower groove. The bottom of the lower groove is rounded, and the bottom of the upper groove is rounded to the wall of the lower groove. The bottoms of both the upper and lower grooves extend radially outward along the tire tread to form grooves of equal width, which effectively avoids the problem of stones getting stuck, improves grip and drainage performance, and ensures the safety of tire use.
[0035] Furthermore, the transverse patterned groove has a depth of 7mm, an inclination angle of 22°, a lower groove width of 0.8mm, a groove depth of 5mm, a groove bottom arc transition radius of 0.4mm, an upper groove width of 2mm, a groove depth of 2mm, and an upper groove bottom arc transition radius of 0.5mm with the lower groove wall.
[0036] Furthermore, the tire tread has shoulder blocks distributed on both sides of the longitudinal tread grooves, which improves the anti-skid performance and prevents uneven wear.
[0037] Furthermore, several vent holes are distributed on both sides of the shoulder block and around the transverse and longitudinal tread grooves to facilitate venting during vulcanization, prevent air pockets from causing tread rounded corners and missing rubber on the tire sidewalls, promote rubber flow, and make the rubber vulcanization more uniform.
[0038] As a preferred technical solution, the diameter of the exhaust hole is 0.8 mm.
[0039] As a preferred technical solution, the shoulder block is marked with specification markings, and the tire tread is evenly staggered on the left and right, and divided into 6 equal parts along the circumference. This not only clearly indicates the specifications, making it easy to confirm the specifications during tire loading and on-site production, but also enhances the aesthetic appearance of the tire.
[0040] As a preferred technical solution, the shoulder block has an outer shoulder groove that serves both a heat dissipation function and a decorative purpose.
[0041] As a preferred technical solution, the groove depth of the underside pattern is 1mm and the groove width is 15mm.
[0042] One of the technical solutions of this utility model is to provide a tire, which includes a wheel disc and a tire carcass, and the tread pattern is distributed on the surface of the tire carcass.
[0043] Compared with the prior art, the present invention has the following beneficial effects:
[0044] (1) In this utility model, the transverse tread grooves and longitudinal tread grooves divide the tire tread into individual small units. At the same time, because the transverse tread grooves are shallow and narrow, they do not completely separate the tread blocks. There is a reinforcing rib between the tread blocks. This combination of longitudinal and transverse tread patterns is beneficial to improving the tire's driving performance and also takes into account the appropriate rolling resistance, ensuring the tire's high-speed stability. The transverse tread grooves adopt a design with different widths at the top and bottom, which effectively avoids the problem of stones getting stuck, and also improves the grip and drainage performance, ensuring the tire's safety. Overall, the tire has good guidance, drainage, grip and anti-skid performance at high speeds.
[0045] (2) The groove wall of the longitudinal pattern groove in this utility model adopts a knurled design, which improves the tire's stone removal and heat dissipation performance and extends the tire's service life; the tire surface is distributed with vent holes, which facilitates venting during vulcanization, prevents air pockets from causing rounded corners of the pattern and missing rubber on the sidewall, promotes the flow of rubber material, and makes the rubber material vulcanization more uniform.
[0046] (3) The tire of this utility model adopts a longitudinal zigzag pattern design, and the constantly changing tread groove angle improves the tire's traction and lateral force; the tire shoulder rigidity is rationalized into a single block design, which makes the tire have excellent resistance to uneven wear; the deep longitudinal tread groove pattern design results in a long wear life; and the overall tire carcass achieves excellent durability. Attached Figure Description
[0047] Figure 1 This is a schematic diagram of the tread pattern structure of the all-steel tubeless radial truck tire in this embodiment of the present invention.
[0048] Figure 2 This is a schematic diagram of the structure of the longitudinal patterned groove wall in an embodiment of this utility model.
[0049] Explanation of markings in the diagram:
[0050] 1—Central longitudinal groove, 2—Side longitudinal groove, 201—Knurling, 3—Transverse groove, 4—Shoulder block, 5—Ventilation hole, 6—Specification marking, 7—Under-shoulder groove. Detailed Implementation
[0051] The present invention will now be described in detail with reference to specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.
[0052] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., used to describe a common object only indicate different instances of the same object, and are not intended to imply that the objects described in this way must be in a given order, whether temporally, spatially, sequentially, or in any other way.
[0053] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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.
[0054] Example:
[0055] A type of all-steel tubeless radial truck tire with a knurled tread pattern, such as Figure 1 and Figure 2As shown, the tire tread includes longitudinal grooves and lateral grooves 3. Along the centerline of the tire tread circumferentially to both sides, three longitudinal grooves are evenly distributed in a zigzag shape with the same zigzag direction. The zigzag longitudinal grooves provide good high-speed performance while also offering good anti-skid performance. The longitudinal grooves include a central longitudinal groove 1 and lateral longitudinal grooves 2. The central longitudinal groove 1 is located at the center of the tire crown, and the lateral longitudinal grooves 2 are evenly distributed on both sides of the central longitudinal groove 1. Tread blocks are evenly distributed longitudinally between the longitudinal grooves. The tire has straight, sloping lateral tread grooves 3. These lateral tread grooves 3, together with the longitudinal tread grooves, divide the tire tread into individual small units. At the same time, because the lateral tread grooves 3 are shallower and narrower, they do not completely separate the tread blocks. There is essentially a reinforcing rib between the tread blocks. This combination of longitudinal and lateral tread patterns not only improves the tire's driving performance but also ensures appropriate rolling resistance, thus guaranteeing the tire's high-speed stability. Overall, the tire achieves good guidance, drainage, grip, and anti-skid performance at high speeds.
[0056] The longitudinal tread grooves are provided with knurling 201 on both sides of the groove wall to improve the tire's stone removal and heat dissipation performance, thereby extending the tire's service life.
[0057] The bottom of the 201 knurled grooves transitions straight, and the bottom of the grooves extends outward along the tread axis to the groove wall of the longitudinal tread grooves, forming a groove with gradually increasing width. The flat bottom and sloping groove wall further enhance the stone removal effect and increase the aesthetics.
[0058] The knurling of 201 has a groove depth of 0.5mm, a groove width of 1mm, a spacing of 2mm between adjacent patterns, a straight transition at the bottom of the groove, and a groove width of 0.73mm at the bottom.
[0059] The bottom of the longitudinal tread grooves is rounded, and the bottom of the grooves extends radially outward along the tire tread to form a groove with gradually increasing width. The round bottom and sloping groove walls also serve to remove stones and prevent sideslip.
[0060] The longitudinal groove has a depth of 15.6 mm, a bend angle of 146°, a width of 15 mm, and a radius of 3.13 mm for the rounded transition at the bottom of the groove.
[0061] The lateral tread groove 3 includes a wide upper groove and a narrow lower groove. The bottom of the lower groove is rounded, and the bottom of the upper groove is rounded to the wall of the lower groove. The bottom of both the upper and lower grooves extends radially outward along the tire tread to form grooves of equal width, which effectively avoids the problem of stones getting stuck, and improves grip and drainage performance, ensuring the safety of tire use.
[0062] The horizontal patterned groove 3 has a groove depth of 7mm, an inclination angle of 22°, a lower groove width of 0.8mm, a groove depth of 5mm, and a groove bottom arc transition radius of 0.4mm. The upper groove has a groove width of 2mm, a groove depth of 2mm, and an upper groove bottom and lower groove wall arc transition radius of 0.5mm.
[0063] Shoulder blocks 4 are distributed on both sides of the longitudinal tread grooves 2 on the tire tread, which improves the anti-skid performance and prevents uneven wear.
[0064] Several vent holes 5 are distributed on both sides of the shoulder block 4 and around the transverse tread groove 3 and the longitudinal tread groove, which facilitates venting during vulcanization, prevents air pockets from causing tread rounded corners and missing rubber on the tire sidewall, promotes rubber flow, and makes the rubber vulcanization more uniform.
[0065] The diameter of the vent 5 is 0.8 mm.
[0066] The shoulder block 4 has specification markings 6 distributed on it. The tire tread is evenly staggered on the left and right and divided into 6 equal parts along the circumference. This not only clearly indicates the specifications, making it easy to confirm the specifications during tire loading and on-site production, but also increases the aesthetic performance of the tire.
[0067] The shoulder block 4 extends outward with a shoulder-shaped groove 7, which serves both a heat dissipation function and a decorative purpose.
[0068] The groove 7 under the shoulder has a depth of 1mm and a width of 15mm.
[0069] A tire includes a disc and a tire carcass, wherein the tire carcass has the aforementioned tread pattern distributed on its tread surface.
[0070] Comparative example:
[0071] A tread pattern structure for an all-steel tubeless radial truck tire is basically the same as the embodiment, except that the knurling 201 on the groove walls of the lateral groove 3 and the longitudinal groove is omitted.
[0072] A tire includes a disc and a tire carcass, wherein the tire carcass has the aforementioned tread pattern distributed on its tread surface.
[0073] The above-mentioned tires were subjected to the following tests or examinations, and the results were then analyzed.
[0074] Experimental example:
[0075] Rolling resistance and grip were tested on the above tires according to ECE R117 standard. The test results are shown in Table 1.
[0076] As shown in Table 1, after adopting a smooth and non-knurled design, the rolling resistance of the tires in the embodiment is basically the same as that of the comparative embodiment, the wet road grip performance index is increased, and the stone removal performance is also improved.
[0077] Table 1 shows the test results of rolling resistance and grip of the tires in the examples and comparative examples.
[0078] performance Example Comparative Example Rolling resistance N / kN 5.898 5.897 Grip performance index on wet surfaces 1.15 1.05
[0079] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.
Claims
1. A knurled pattern structure for a tread band of a full-steel truck tubeless radial tire, characterized by, The tread pattern structure includes longitudinal tread grooves and transverse tread grooves (3). Along the center line of the tire tread circumferential direction to both sides, there are three longitudinal tread grooves with the same zigzag direction. The longitudinal tread grooves include a central longitudinal tread groove (1) and a lateral longitudinal tread groove (2). The central longitudinal tread groove (1) is located at the center of the tire crown, and the lateral longitudinal tread grooves (2) are located on both sides of the central longitudinal tread groove (1). The longitudinal tread grooves are arranged with longitudinally arranged tread blocks in the transverse direction. The tread blocks are arranged with straight, inclined transverse tread grooves (3) in the longitudinal direction. The walls of the longitudinal tread grooves are provided with knurling (201).
2. A knurled pattern structure for a tread band of a full steel truck tubeless radial tire according to claim 1, characterized in that, The bottom of the knurling (201) is a straight transition, and the bottom of the groove extends outward along the axial direction of the tire tread to the groove wall of the longitudinal tread groove to form a groove with gradually increasing width.
3. A knurled pattern structure for a tread band of a full steel truck tubeless radial tire according to claim 2, characterized in that, The knurling (201) has a groove depth of 0.5 mm, a groove width of 1 mm, a spacing of 2 mm between adjacent patterns, a straight transition at the bottom of the groove, and a groove width of 0.73 mm at the bottom.
4. The knurled pattern structure of the full steel truck tire of claim 1, wherein, The bottom of the longitudinal tread groove is rounded, and the bottom of the groove extends radially outward along the tire tread to form a groove with gradually increasing width.
5. The knurled pattern structure of the full steel truck tire of claim 4, wherein, The longitudinal patterned groove has a depth of 15.6 mm, a tortuosity of 146°, a width of 15 mm, and a radius of 3.13 mm for the arc transition at the bottom of the groove.
6. The all-steel tubeless radial truck tire with knurled tread pattern structure according to claim 1, characterized in that, The transverse tread groove (3) includes an upper wide groove and a lower narrow groove. The bottom of the lower groove is rounded, and the bottom of the upper groove is rounded to the wall of the lower groove. The bottoms of both the upper and lower grooves extend radially outward along the tire tread to form grooves of equal width.
7. A knurled pattern structure for a tread band of a full steel truck tubeless radial tire according to claim 6, characterized in that, The transverse patterned groove (3) has a groove depth of 7mm, an inclination angle of 22°, a groove width of 0.8mm and a groove depth of 5mm at the bottom, a groove bottom arc transition radius of 0.4mm, a groove width of 2mm and a groove depth of 2mm at the top, and a groove bottom and lower groove wall arc transition radius of 0.5mm.
8. A knurled pattern structure for a tread band of a full steel truck tubeless radial tire according to claim 1, characterized in that, The tire tread has shoulder blocks (4) distributed on both sides of the longitudinal tread groove (2).
9. A knurled pattern structure for a tread band of a full steel truck tubeless radial tire according to claim 8, characterized in that, Vent holes (5) are distributed on both sides of the shoulder block (4) and around the transverse pattern groove (3) and the longitudinal pattern groove.
10. A tire, characterized in that, The tire includes a disc and a tire carcass, the tire carcass having a tread pattern distributed on its surface as described in any one of claims 1 to 9.