An off-road tire structure

Abstract

The utility model relates to cross -country tire technical field, and disclose a kind of cross -country tire structure, comprising: carcass and reinforcing inner cavity, the reinforcing inner cavity is set in the inner cavity of carcass, the outside both sides of carcass are provided with meridian, meridian can enhance the structural strength of carcass side, resist the lateral impact force that carcass side is subjected to in cross -country driving, such as roll scraping, stone impact, prevent carcass side excessive deformation or cracking, ensure the structural stability of tire under complex road conditions, the outside of carcass is uniformly provided with first pattern block, the outside of first pattern block is provided with first pattern groove. The cross -country tire structure avoids the damage caused by the collision between tire side and obstacle directly, and the lock chain clamping groove set in the second pattern block cavity can be adapted to external anti-skid chain, in ice and snow, steep slope and other extreme cross -country road conditions, the anti-skid performance of tire can be further improved by installing anti-skid chain.

Description

Technical Field

[0001] This utility model relates to the field of off-road tire technology, specifically to an off-road tire structure. Background Technology

[0002] Off-road tires are a key component of off-road vehicles. They are mainly used in complex off-road conditions such as mud, slippery surfaces, ice, snow, and steep slopes. Their performance directly affects the vehicle's driving stability and safety under these conditions. Therefore, high requirements are placed on the tires' grip, impact resistance, and anti-skid performance in extreme environments. They are an important part of ensuring the smooth passage of off-road vehicles.

[0003] Existing off-road tires have certain design flaws in their performance. The tread blocks are insufficient to effectively increase the contact area with the ground, resulting in inadequate tire grip. Furthermore, the tread grooves have limited space, failing to adequately hold water and mud, making vehicles prone to slipping on muddy or slippery surfaces. Additionally, the tire sidewalls lack dedicated protective structures, making them less impact-resistant and more susceptible to damage in collisions with obstacles. Moreover, the tires lack a structure to accommodate external anti-skid chains, meaning that in extreme off-road conditions such as ice, snow, or steep slopes, anti-skid chains cannot be installed to further enhance traction, thus compromising driving safety. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides an off-road tire structure to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an off-road tire structure, comprising: a tire body and a reinforced inner cavity, wherein the reinforced inner cavity is disposed within the inner cavity of the tire body, and radial lines are provided on both outer sides of the tire body. The radial lines can enhance the structural strength of the tire body sidewalls, resist the lateral impact forces on the tire body sidewalls during off-road driving, such as side-slip scraping and stone impacts, prevent excessive deformation or cracking of the tire body sidewalls, and ensure the structural stability of the tire under complex road conditions.

[0006] The tire body is uniformly provided with first tread blocks on the outside, and first tread grooves are formed on the outside of the first tread blocks. The uniform distribution of the first tread blocks can increase the contact area between the tire tread and the ground and improve grip. The first tread grooves can accommodate water and mud on the road surface and reduce the risk of slipping between the tire tread and the ground. In particular, it can effectively improve driving safety on muddy and slippery off-road roads.

[0007] The tire body has two outer sides with evenly distributed second tread blocks. The inner cavity of the second tread block is provided with a chain slot. The second tread blocks are located on both sides of the tire body to enhance the impact resistance of the tire sidewall and prevent the tire sidewall from directly colliding with obstacles and causing damage. The chain slot can be used to adapt to external anti-skid chains. In extreme off-road conditions, the anti-skid performance can be further improved by installing chains.

[0008] The inner cavity of the first tread block is provided with short steel plates. The short steel plates can improve the wear resistance and tear resistance of the first tread block, reduce the wear and damage caused by friction and impact during off-road driving, and extend the service life of the tread block.

[0009] The inner cavity of the chain slot is fitted with a soft pad, which can cushion the impact of the chain slot with foreign objects such as small stones during driving, reduce impact noise, and prevent the edge of the slot from cracking or deforming due to impact, thus protecting the structural integrity of the chain slot. A mud discharge groove is opened between the first tread block and the second tread block. The mud discharge groove can promptly discharge the mud and water accumulated between the tire tread and the ground, preventing mud and sand from clogging the tread gaps and causing a decrease in grip, ensuring that the tire always maintains good passability on muddy off-road surfaces.

[0010] Preferably, the inner wall of the reinforced cavity is uniformly and integrally formed with reinforcing ribs, which are spaced apart along the circumference of the tire body. The spaced arrangement of the reinforcing ribs along the circumference can evenly distribute the pressure inside the tire body during tire rotation, avoid local pressure concentration that could lead to deformation of the reinforced cavity, and enhance the compression resistance of the reinforced cavity, thereby improving the tire's load-bearing capacity and adapting to the heavy load requirements during off-road driving.

[0011] The reinforced inner cavity is filled with a polyurethane foam core. The polyurethane foam core is lightweight and highly elastic, which can reduce the overall weight of the tire and reduce driving energy consumption. It can also absorb vibrations when encountering uneven road surfaces during off-road driving, alleviate the feeling of bumps, and improve ride comfort. At the same time, it can also provide temporary support when the tire is low in pressure or slightly damaged, preventing the tire from losing pressure quickly and ensuring driving safety.

[0012] Preferably, the radial line is made of aramid fiber and the diameter of the radial line is 1.2 to 1.5 mm. Aramid fiber has the characteristics of high strength, high modulus and wear resistance, which can provide excellent structural support for the radial line. The diameter setting of 1.2 to 1.5 mm can ensure that the radial line has sufficient strength to resist the impact force of the tire sidewall and prevent breakage or tensile deformation, while the tire sidewall will not be too thick and hard due to the diameter being too large, which would affect the flexibility of the tire. This ensures that the tire can fit well on complex off-road surfaces and further improve grip stability.

[0013] Preferably, the short steel pieces inside the first tread block are evenly spaced along the length of the first tread block. This even spacing ensures uniform force distribution on the first tread block, preventing uneven wear due to dense or missing steel pieces and extending its service life. The uniform steel piece arrangement also enhances the overall impact resistance of the tread block, adapting to complex conditions such as rock impacts and ground friction during off-road driving. The mud discharge channel between the first and second tread blocks has a polygonal cross-section. Compared to an arc-shaped channel, the polygonal cross-section enhances the scraping ability of mud and sand. When the tire rotates, the polygonal channel wall can more efficiently scrape off and discharge mud and sand. Simultaneously, the polygonal structure improves the deformation resistance of the mud discharge channel itself, preventing damage to the channel wall due to mud and sand compression and ensuring long-term stable mud discharge performance.

[0014] Preferably, the tire carcass is made of 3-5 layers of ply fabric. The stacking of 3-5 ply fabric layers allows for flexible adjustment of structural strength according to the tire's off-road strength and load-bearing requirements. Too few layers would make it difficult to withstand off-road impacts, while too many layers would increase the tire's weight. This range of layers ensures that the tire carcass has sufficient tensile and impact resistance while controlling the tire carcass weight within a reasonable range, balancing performance and energy consumption. Adjacent ply fabric layers are bonded together with butyl rubber adhesive. Butyl rubber adhesive has excellent bonding strength and sealing properties, ensuring that adjacent ply fabric layers are tightly bonded, preventing gaps between layers that could lead to water or sand ingress, avoiding damage to the ply fabric layers due to corrosion and wear, and extending the tire carcass's service life. Furthermore, the outer surface of the outermost ply fabric layer is fixedly connected to the radial axis. This connection method combines the supporting force of the radial axis with the structural strength of the ply fabric layer, forming a unified force system on the outside of the tire carcass, improving the overall deformation resistance of the tire carcass, and ensuring that the tire maintains a stable structural shape during off-road driving.

[0015] Preferably, the first tread groove on the outside of the first tread block is an arc-shaped groove. The arc-shaped groove structure can reduce the impact stress when the first tread groove contacts the ground, and prevent the groove opening from cracking or chipping due to frequent impacts. At the same time, the arc-shaped groove can increase the contact friction with the ground and improve the grip. The radius of curvature of the first tread groove is 8-10mm. The radius of curvature of 8-10mm can ensure that the first tread groove has enough volume to accommodate the water and mud on the road surface, and play a role in the transition and removal of debris. It can also prevent the tread groove from being too shallow due to the radius of curvature being too large, which would affect the grip effect, or too thin due to the radius of curvature being too small, which would reduce the wear resistance. This ensures that the tread groove can play a stable role in off-road conditions such as muddy and slippery roads.

[0016] Compared with the prior art, the present invention provides an off-road tire structure with the following advantages:

[0017] This off-road tire structure features evenly spaced first tread blocks on the outer surface of the tire carcass, which increase the contact area between the tire and the ground, thereby improving the tire's grip. Simultaneously, the first tread grooves on the outer surface of the first tread blocks can trap water and mud from the road surface, reducing the risk of slippage between the tire and the ground. This is especially beneficial when driving on muddy or slippery off-road surfaces, effectively improving driving safety. Evenly spaced second tread blocks on both sides of the tire carcass further enhance the tire's impact resistance, preventing direct collisions with obstacles and subsequent damage. Furthermore, the chain slots within the second tread blocks can accommodate external anti-skid chains. In extreme off-road conditions such as ice, snow, and steep slopes, installing anti-skid chains further enhances the tire's anti-skid performance. Attached Figure Description

[0018] Figure 1 This is a front view of the present utility model;

[0019] Figure 2 This is a schematic diagram of the external appearance of the present invention;

[0020] Figure 3 This is a schematic diagram of the external appearance of this utility model.

[0021] In the diagram: 1. Tire body; 11. Meridian; 2. Reinforced inner cavity; 3. First tread block; 4. Second tread block; 41. Chain slot. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] This utility model provides a technical solution, please refer to Figure 1 , Figure 2 and Figure 3 An off-road tire structure includes: a tire body 1 and a reinforced inner cavity 2. The reinforced inner cavity 2 is disposed in the inner cavity of the tire body 1. Meridians 11 are provided on both outer sides of the tire body 1. The meridians 11 can enhance the structural strength of the side of the tire body 1, resist the lateral impact force on the side of the tire body 1 during off-road driving, such as side-slip scraping and stone impact, prevent excessive deformation or cracking of the side of the tire body 1, and ensure the structural stability of the tire under complex road conditions.

[0024] The tire body 1 is uniformly provided with first tread blocks 3, and the first tread blocks 3 are provided with first tread grooves 32. The uniform distribution of the first tread blocks 3 can increase the contact area between the tire tread and the ground and improve grip. The first tread grooves 32 can accommodate water and mud on the road surface and reduce the risk of slippage between the tire tread and the ground. In particular, it can effectively improve driving safety on muddy and slippery off-road roads.

[0025] The tire body 1 has two outer sides evenly provided with second tread blocks 4. The inner cavity of the second tread blocks 4 is provided with a chain groove 41. The second tread blocks 4 are provided on both outer sides of the tire body 1, which can enhance the impact resistance of the tire side and prevent the tire side from directly colliding with obstacles and causing damage. The chain groove 41 can be used to adapt to external anti-skid chains. In extreme off-road conditions such as ice and snow and steep slopes, the anti-skid performance can be further improved by installing chains.

[0026] The inner cavity of the first patterned block 3 is provided with short steel plates. The short steel plates can improve the wear resistance and tear resistance of the first patterned block 3, reduce the wear and damage caused by friction and impact during off-road driving, and extend the service life of the patterned block.

[0027] The inner cavity of the chain groove 41 is fitted with a soft pad, which can cushion the impact of the chain groove 41 with foreign objects such as small stones during driving, reduce impact noise, and prevent the edge of the groove from cracking or deforming due to impact, thus protecting the structural integrity of the chain groove 41. A mud discharge groove 5 is provided between the first tread block 3 and the second tread block 4. The mud discharge groove 5 can promptly discharge the mud and water accumulated between the tire tread and the ground, preventing mud and sand from clogging the tread gaps and causing a decrease in grip, thus ensuring that the tire always maintains good passability on muddy off-road surfaces.

[0028] The inner wall of the reinforced inner cavity 2 is uniformly and integrally formed with reinforcing ribs. The reinforcing ribs are spaced along the circumference of the tire body 1. The spaced reinforcing ribs can evenly distribute the pressure inside the tire body 1 during tire rotation, avoid local pressure concentration that could cause deformation of the reinforced inner cavity 2, and enhance the compression resistance of the reinforced inner cavity 2, thereby improving the tire's load-bearing capacity and adapting to the heavy load requirements during off-road driving.

[0029] The interior of the reinforced inner cavity 2 is filled with a polyurethane foam core. The polyurethane foam core is lightweight and highly elastic, which can reduce the overall weight of the tire and reduce driving energy consumption. It can also absorb vibrations when encountering uneven road surfaces during off-road driving, alleviate the feeling of bumps, and improve ride comfort. At the same time, it can also provide temporary support when the tire is low in pressure or slightly damaged, preventing the tire from losing pressure quickly and ensuring driving safety.

[0030] The Meridian 11 is made of aramid fiber with a diameter of 1.2–1.5 mm. Aramid fiber has high strength, high modulus, and wear resistance, which can provide excellent structural support for the Meridian 11. The diameter setting of 1.2–1.5 mm can ensure that the Meridian 11 has sufficient strength to resist the impact force of the tire sidewall and prevent breakage or tensile deformation, while avoiding excessive thickness and hardness of the tire sidewall due to excessive diameter, which would affect the flexibility of the tire. This ensures that the tire can fit well on complex off-road surfaces and further improve grip stability.

[0031] The short steel plates inside the first tread block 3 are evenly spaced along the length of the first tread block 3. This even spacing ensures uniform force distribution on the first tread block 3, preventing uneven wear caused by dense or missing steel plates and extending its service life. The uniform steel plate arrangement also enhances the overall impact resistance of the tread block, adapting to complex conditions such as rock impacts and ground friction during off-road driving. The mud discharge groove 5 between the first tread block 3 and the second tread block 4 has a polygonal cross-section. Compared to an arc-shaped groove, the polygonal cross-section of the mud discharge groove 5 enhances its ability to scrape mud and sand. When the tire rotates, the polygonal groove wall can more efficiently "scrape off" and discharge mud and sand. Simultaneously, the polygonal structure improves the deformation resistance of the mud discharge groove 5, preventing damage to the groove wall due to mud and sand compression and ensuring long-term stable mud discharge performance.

[0032] The tire carcass 1 is made of 3-5 layers of ply fabric. The stacking of 3-5 ply fabric layers allows for flexible adjustment of structural strength according to the tire's off-road strength and load-bearing requirements. Too few layers would make it difficult to withstand off-road impacts, while too many layers would increase the tire's weight. This range of ply fabric layers ensures that the tire carcass 1 has sufficient tensile and impact resistance while controlling the tire's weight within a reasonable range, balancing performance and energy consumption. Adjacent ply fabric layers are bonded together with butyl rubber adhesive. Butyl rubber adhesive has excellent bonding strength and sealing properties, ensuring that adjacent ply fabric layers are tightly bonded, preventing gaps between layers that could lead to water or sand ingress, and avoiding damage to the ply fabric layers due to corrosion and wear, thus extending the service life of the tire carcass 1. Furthermore, the outer surface of the outermost ply fabric layer is fixedly connected to the radial 11. This connection method combines the supporting force of the radial 11 with the structural strength of the ply fabric layer, forming a unified force system on the outside of the tire carcass 1, improving the overall deformation resistance of the tire carcass, and ensuring that the tire maintains a stable structural shape during off-road driving.

[0033] The first tread groove on the outside of the first tread block 3 is an arc-shaped groove. The arc-shaped groove structure can reduce the impact stress when the first tread groove contacts the ground, and prevent the groove opening from cracking or chipping due to frequent impacts. At the same time, the arc-shaped groove can increase the contact friction with the ground and improve the grip. The radius of curvature of the first tread groove is 8-10mm. The radius of curvature of 8-10mm can ensure that the first tread groove has enough volume to accommodate the water and mud on the road surface, and play a role in the transition and removal of debris. It can also prevent the tread groove from being too shallow due to the radius of curvature being too large, which would affect the grip effect, or too thin due to the radius of curvature being too small, which would reduce the wear resistance. This ensures that it can perform stably in off-road conditions such as muddy and slippery roads.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.

Claims

1. An off-road tire structure, comprising: The tire body (1) and the reinforcing inner cavity (2) are located in the inner cavity of the tire body (1). The tire body (1) has a meridian line (11) on both sides of its exterior. The tire body (1) has a first tread block (3) evenly distributed on its exterior. The first tread block (3) has a (32) opening on its exterior. The tire body (1) has a second tread block (4) evenly distributed on both sides of its exterior. The second tread block (4) has a chain groove (41) opening in its inner cavity. The first tread block (3) has a short steel sheet in its inner cavity. The chain groove (41) has a soft pad embedded in its inner cavity. A mud discharge groove is opened between the first tread block (3) and the second tread block (4).

2. The off-road tire structure according to claim 1, characterized in that: The inner wall of the reinforced inner cavity (2) is uniformly and integrally formed with reinforcing ribs, which are spaced apart along the circumferential direction of the tire body (1). The interior of the reinforced inner cavity (2) is filled with polyurethane foam core.

3. The off-road tire structure according to claim 2, characterized in that: The meridian (11) is made of aramid fiber and has a diameter of 1.2 to 1.5 mm.

4. The off-road tire structure according to claim 1, characterized in that: The short steel pieces inside the first patterned block (3) are evenly spaced along the length of the first patterned block (3), and the mud discharge trough (5) between the first patterned block (3) and the second patterned block (4) has a polygonal cross section.

5. The off-road tire structure according to claim 1, characterized in that: The tire body (1) is made of 3-5 layers of plywood, with adjacent plywood layers bonded together by butyl rubber adhesive, and the outer surface of the outermost plywood layer is fixedly connected to the meridian (11).

6. The off-road tire structure according to claim 1, characterized in that: The first pattern groove opened on the outside of the first pattern block (3) is an arc-shaped groove with a radius of curvature of 8 to 10 mm.

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