A tire with high strength and good puncture resistance

Abstract

The utility model relates to tire technical field, specifically disclose a kind of tire of high-strength good effect of puncture resistance, including by outer to inner sequentially arranged tread layer, carcass ply and airtight layer, the puncture resistance composite layer is arranged between the tread layer and carcass ply;It can effectively resist the penetration of most road surface sharp objects, fundamentally avoids tire burst and air leakage, by the puncture resistance composite layer design is segmented staggered type, make tire when rolling road kerbstone or through bad road condition, can the huge concentrated impact force decomposition, absorption, avoid stress concentration, integrated heat-conducting silicone layer and metal wire and passive air cooling heat dissipation, can high-efficiency export and emit internal heat, effectively control the working temperature of tire, significantly delay rubber aging, oxidation and interlayer degumming phenomenon, ensure the structural integrity of puncture resistance composite layer, to prolong the overall service life of tire.

Description

Technical Field

[0001] This utility model relates to the field of tire technology, and specifically discloses a high-strength tire with good puncture resistance. Background Technology

[0002] Pneumatic tires are widely used in various vehicles due to their good cushioning performance, rolling resistance, and load-bearing capacity. However, their carcass is made of rubber and cord materials, which have limited strength. During driving, they are easily punctured by sharp foreign objects on the road such as nails, broken glass, and metal shavings, leading to air leakage or sudden tire blowout. This not only causes inconvenience and economic losses to users but also poses a serious safety hazard.

[0003] To improve tire puncture resistance, current puncture-resistant tire technologies include: First, self-sealing tires, which have a sealing rubber material coated on the inner wall or cavity of a traditional pneumatic tire. This sealant coats the tire's inner wall, encapsulating the puncture and sealing the wound when a sharp object punctures. However, this method is less effective with larger punctures, and the sealant may fail due to temperature changes or aging, affecting dynamic balance. Second, solid tires, which require no inflation, fundamentally solve the puncture problem. However, they are heavy, have high rolling resistance, poor cushioning, severely impacting the riding experience and increasing energy consumption. Furthermore, some existing tires with protective layers often have simple, hard material layers. While these can withstand some punctures, they are prone to breakage due to stress concentration under strong impacts (such as driving over curbs), offering limited protection and thus requiring improvement. Utility Model Content

[0004] This invention proposes a high-strength tire with good puncture resistance. Through the synergistic design of rigid-flexible composite and segmented interlacing, it achieves excellent puncture resistance while also taking into account the tire's cushioning comfort, impact resistance, and long-term durability.

[0005] This utility model is implemented as follows: a high-strength tire with good puncture resistance includes a tread layer, a carcass ply layer and an airtight layer arranged sequentially from the outside to the inside, and an anti-puncture composite layer is provided between the tread layer and the carcass ply layer. The anti-puncture composite layer includes a high-hardness puncture-resistant layer on the outer side and a high-toughness buffer layer on the inner side. The high-toughness buffer layer is formed by at least two layers of protective sheet material being stacked and vulcanized together, and each layer of the protective sheet material is composed of multiple independent protective segments arranged along the circumference of the tire; in the stacking direction, the seams of the protective segments in adjacent protective sheet materials are staggered. A thermally conductive silicone layer is provided between the puncture-resistant composite layer and the tire carcass ply layer, and the thermally conductive silicone layer contains a spiral metal wire aligned with the circumferential direction of the tire.

[0006] As a preferred embodiment of this invention, a high-strength tire with good puncture resistance, the high-hardness puncture-resistant layer is a fabric layer woven from a metal mesh.

[0007] As a preferred embodiment of this invention for a high-strength tire with good puncture resistance, the protective segment is made of polyurethane elastomer.

[0008] As a preferred embodiment of this utility model of a high-strength tire with good puncture resistance, the mesh density of the high-hardness puncture-resistant layer is 5-20 mesh.

[0009] As a preferred embodiment of this invention for a high-strength tire with good puncture resistance, the spiral metal wire is a shape memory metal.

[0010] As a preferred embodiment of this utility model of a high-strength tire with good puncture resistance, the outer wall of the tread layer is provided with wavy grooves.

[0011] The beneficial effects of this utility model are: 1. By combining a high-hardness puncture-resistant layer with a high-toughness buffer layer, two highly efficient physical barriers are constructed. The first line of defense (the hard layer) is responsible for destroying sharp objects, while the second line of defense (the flexible layer) is responsible for absorbing energy and wrapping and fixing the remaining sharp point. This synergistic mechanism greatly improves the puncture threshold and can effectively resist the penetration of most road sharp objects (such as nails and glass shards), fundamentally avoiding tire blowouts and air leaks, and improving driving safety.

[0012] 2. By designing the puncture-resistant composite layer in a segmented, staggered pattern, the tire can decompose and absorb the enormous concentrated impact force when driving over curbs or traversing rough road conditions, thus avoiding stress concentration. Even under extreme impact, the damage is confined to a localized segment, effectively preventing instantaneous tearing of the tire carcass ply and the resulting tire blowout.

[0013] 3. The integrated thermally conductive silicone layer, along with metal wires and passive air cooling, can efficiently conduct and dissipate internal heat, effectively controlling the tire's operating temperature, significantly delaying rubber aging, oxidation, and interlayer delamination, ensuring the structural integrity of the puncture-resistant composite layer, and thus extending the overall service life of the tire. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0015] Figure 1This is an overall structural diagram of a high-strength tire with good puncture resistance according to this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a structural diagram of the high-hardness puncture-resistant layer and the high-toughness buffer layer of this utility model; Figure 4 This is a structural diagram of the spiral metal wire of this utility model; Figure 5 This is a cross-sectional view of the protective segment of this utility model.

[0016] The markings in the diagram are: 1. Tread layer; 2. Puncture-resistant composite layer; 201. High-hardness puncture-resistant layer; 202. High-toughness buffer layer; 2021. Protective segment; 3. Thermally conductive silicone layer; 301. Spiral metal wire; 4. Carcass ply layer; 5. Airtight layer. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0018] Please see Figure 1-5 A high-strength tire with good puncture resistance includes a tread layer 1, a carcass ply layer 4 and an airtight layer 5 arranged sequentially from the outside to the inside; a puncture-resistant composite layer 2 is provided between the tread layer 1 and the carcass ply layer 4. The anti-puncture composite layer 2 includes a high-hardness puncture-resistant layer 201 on the outer side and a high-toughness buffer layer 202 on the inner side; The high-toughness buffer layer 202 is formed by at least two layers of protective sheet layers being stacked and vulcanized together, and each layer of protective sheet layer is composed of multiple independent protective segments 2021 arranged along the tire circumference; in the stacking direction, the seams of the protective segments 2021 in adjacent protective sheet layers are staggered. A thermally conductive silicone layer 3 is provided between the puncture-resistant composite layer 2 and the tire carcass ply layer 4. The thermally conductive silicone layer 3 contains a spiral metal wire 301 that is aligned with the circumferential direction of the tire.

[0019] In this embodiment: when a sharp object (such as a nail) pierces the tire, the defense process is initiated sequentially. After the sharp object penetrates the tread layer 1, it first impacts the high-hardness puncture-resistant layer 201 (such as a metal braided mesh). This layer uses its extremely high hardness and strength to hard intercept the sharp object. By breaking off the tip or rolling it, most of its kinetic energy is consumed and its physical form is changed. The remaining foreign object after being destroyed by the first line of defense continues to impact the high-toughness buffer layer 202 composed of polyurethane protective segments 2021. The high-toughness buffer layer 202 is composed of multiple independent protective segments 2021 stacked in an alternating manner. By utilizing the material's high toughness and viscoelasticity, the remaining impact kinetic energy is converted into heat energy, terminating the puncture process. Most sharp objects are successfully blocked by this "rigid-flexible" dual defense and cannot puncture the airtight layer 5, thus achieving the core anti-puncture function. This greatly improves the tire's impact resistance and structural durability. At the same time, when the tire is subjected to a large local impact (such as running over a road shoulder), it can decompose the concentrated stress into individual segments, allowing them to undergo small-amplitude independent deformation to absorb energy, avoiding the penetrating cracks that are prone to occur in traditional integral protective layers.

[0020] When the tire is in operation, the heat generated by the puncture-resistant composite layer 2 is first absorbed by the thermally conductive silicone layer 3. The embedded spiral metal wires 301, especially the shape memory metal, act as a highly efficient heat-conducting skeleton, rapidly conducting and evenly distributing heat along the tire's circumference to prevent localized overheating. As the tire rotates, centrifugal force causes the air to carry away the accumulated heat through the wavy grooves and dissipate it into the external environment, effectively dissipating the heat generated during energy conversion and deformation during the puncture protection process, ensuring long-term stable tire operation.

[0021] As a technical optimization of this utility model, the high-hardness puncture-resistant layer 201 is a fabric layer woven from metal mesh.

[0022] In this embodiment: When a sharp object (such as a nail or glass) attempts to penetrate, the hard metal mesh (such as high-carbon steel wire) directly resists it. Its function is either to use the extremely high strength and hardness of the mesh wire to "break" or "bend" the sharp object, or to use the "shearing" effect of the mesh holes to cut off small sharp objects (such as the edges of gravel).

[0023] As a technical optimization of this utility model, the protective segment 2021 is made of polyurethane elastomer.

[0024] In this embodiment: the polyurethane elastomer, preferably thermoplastic polyurethane elastomer (TPU), possesses excellent toughness, high elasticity, and tear strength. When a sharp object (or a blunted tip) that the high-hardness puncture-resistant layer 201 fails to completely resist impacts the layer carrying residual kinetic energy, the polyurethane elastomer does not rigidly resist but undergoes large deformation, encapsulating the foreign object like a piece of tough putty. This process converts the impact kinetic energy into heat energy through the material's own viscoelastic internal friction, thereby effectively dissipating the energy. Simultaneously, it tightly clamps the foreign object, preventing it from penetrating further or exiting due to vibration during tire rolling, thus avoiding secondary punctures and slow leaks.

[0025] As a technical optimization of this utility model, the mesh density of the high-hardness puncture-resistant layer 201 is 5-20 mesh.

[0026] In this embodiment: setting a mesh density range of 5-20 meshes is a balanced and optimized range. If the mesh is too dense (mesh count is too high), although the protection is better, the layer will be too hard, which is not conducive to the local deformation of the tire and the comfort of ground contact. At the same time, the weight and rolling resistance will also increase. If the mesh is too sparse (mesh count is too low), although the flexibility is better and the weight is lighter, enough gaps will be left for fine and sharp objects (such as sewing needles and thorns) to pass through directly, resulting in the failure of protection.

[0027] As a technical optimization of this utility model, the spiral metal wire 301 is a shape memory metal.

[0028] In this embodiment, the shape memory metal is a nickel-titanium alloy. During normal tire rolling and deformation, the shape memory metal wires can withstand much greater strain than ordinary metals without permanent deformation. When the stress is relieved, it can instantly return to its original shape. This gives the thermally conductive silicone layer 3 excellent fatigue resistance, preventing the metal wires from breaking due to long-term repeated deformation of the tire.

[0029] As a technical optimization of this utility model, the outer wall of the tread layer 1 is provided with a wavy groove.

[0030] In this embodiment: When the tire rolls at high speed, the air inside it flows outward due to centrifugal force. As the tire rotates, the wavy grooves help to turbulent the air and improve heat exchange efficiency. This airflow continuously carries away the heat transferred from the puncture-proof composite layer 2 and the thermally conductive silicone layer 3, and dissipates it into the outside air through the tire sidewall and other parts.

[0031] The working principle and usage process of this utility model are as follows: When a sharp object (such as a nail) pierces the tire, the defense process is initiated sequentially. After the sharp object penetrates the tread layer 1, it first impacts the high-hardness puncture-resistant layer 201 (such as a metal mesh). This layer utilizes its extremely high hardness and strength to hard-intercept the sharp object, consuming most of its kinetic energy and changing its physical form by breaking off the tip or causing it to curl. The remaining foreign object, after being destroyed by the first line of defense, continues to impact the high-toughness buffer layer 202, which is composed of multiple independent protective segments 2021. The layered structure utilizes the high toughness and viscoelasticity of the materials to convert the remaining impact kinetic energy into heat energy, terminating the puncture process. Most sharp objects are successfully blocked by this "rigid-flexible" dual defense and cannot puncture the airtight layer 5, thus achieving the core anti-puncture function. This greatly improves the tire's impact resistance and structural durability, while maintaining good ground compliance. When the tire is subjected to a large local impact (such as running over a road shoulder), it can decompose the concentrated stress into individual segments, allowing them to undergo small-amplitude independent deformation to absorb energy, avoiding the penetrating cracks that are prone to occur in traditional integral protective layers.

[0032] When the tire is working, the heat generated by the puncture-proof composite layer 2 is first absorbed by the thermally conductive silicone layer 3. The embedded spiral metal wire 301, especially the shape memory metal, serves as a highly efficient thermally conductive skeleton, which quickly conducts and evenly distributes the heat along the tire circumference, preventing local overheating. When the tire rotates, the centrifugal force causes the air to dissipate the heat to the external environment through the wave-shaped grooves, which can efficiently conduct and dissipate the internal heat.

[0033] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0034] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A high-strength tire with good puncture resistance, comprising, from the outside to the inside, a tread layer (1), a carcass ply (4), and an airtight layer (5); characterized in that: A puncture-resistant composite layer (2) is provided between the tread layer (1) and the carcass ply layer (4); The anti-puncture composite layer (2) includes a high-hardness puncture-resistant layer (201) on the outer side and a high-toughness buffer layer (202) on the inner side. The high-toughness buffer layer (202) is formed by at least two layers of protective sheet layers being stacked and vulcanized together, and each layer of the protective sheet layer is composed of multiple independent protective segments (2021) arranged along the tire circumference; in the stacking direction, the seams of the protective segments (2021) in adjacent protective sheet layers are staggered. A thermally conductive silicone layer (3) is provided between the puncture-resistant composite layer (2) and the tire carcass ply layer (4), and the thermally conductive silicone layer (3) contains a spiral metal wire (301) that is aligned with the circumferential direction of the tire.

2. The high-strength tire with good puncture resistance according to claim 1, characterized in that: The high-hardness puncture-resistant layer (201) is a fabric layer woven from metal mesh.

3. The high-strength tire with good puncture resistance according to claim 1, characterized in that: The protective segment (2021) is made of polyurethane elastomer.

4. The high-strength tire with good puncture resistance according to claim 1, characterized in that: The high-hardness puncture-resistant layer (201) has a mesh density of 5-20 mesh.

5. A high-strength tire with good puncture resistance according to claim 1, characterized in that: The spiral metal wire (301) is a shape memory metal.

6. The high-strength tire with good puncture resistance according to claim 1, characterized in that: The outer wall of the tread layer (1) is provided with wavy grooves.

Images