Tire sidewall reinforced polyurethane tire

Abstract

The utility model discloses a sidewall reinforced polyurethane tire, which relates to the field of tires and comprises a tire body, a circle of reinforcing layer is formed on the periphery of the sidewall of the tire body close to a tire crown, and the reinforcing layer and the tire body are integrally formed; according to the sidewall-reinforced polyurethane tire, the peripheral part of the sidewall of the tire body is reinforced through the arrangement of the reinforcing layer, the metal embedded layer and the double-layer cord fabric layer, so that after the arc-shaped convex part is formed on the peripheral part of the sidewall of the tire body which bears load and is close to the ground, the sidewall of the tire body is reinforced; the puncture resistance of the lower surface of the protruding part can be greatly improved due to the existence of the reinforcing layer, the metal embedded layer and the double-layer cord fabric layer, compression caused by sharp objects on the ground can be effectively resisted, the tire sidewall damage probability of the tire is reduced, and the service life of the tire body is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of tires, and more particularly to a sidewall-reinforced polyurethane tire. Background Technology

[0002] When a tire is under load, the sidewall near the ground is compressed, forming an arc-shaped bulge on both sides. The lower surface of this bulge is easily punctured by sharp objects on the ground. Traditional tires do not have corresponding reinforcement structures in this area, and because this part of the sidewall is compressed, its puncture resistance is weakened, making the tire very easy to be punctured at this location. Sidewall damage is different from tread damage, which can be repaired with tire repair techniques, while a tire with a damaged sidewall will be scrapped. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, the purpose of this utility model is to provide a sidewall-reinforced polyurethane tire, which solves the problem that the sidewall of the existing tire does not have a corresponding reinforcement structure, resulting in the arc-shaped protrusion that is very easy to break after bearing weight.

[0004] To address the problems in the existing technology, the technical solution of this utility model is as follows:

[0005] A sidewall-reinforced polyurethane tire includes a tire carcass. A reinforcing layer is formed on the outer periphery of the sidewall near the tire crown. The reinforcing layer is integrally formed with the tire carcass. The cross-section of the outer contour of the reinforcing layer is a smoothly transitioning arc shape. The reinforcing layer protrudes from the sidewall portion and has an embedded metal layer. The outer ring of the reinforcing layer connects to the tire crown of the tire carcass. A double-layer ply is embedded in the tire carcass portion opposite the reinforcing layer. When the tire carcass bears weight, the bottom of its contact surface will compress the tire sidewall, causing the two sides of the tire sidewall to be squeezed outward to form an outwardly expanding arc shape. The reinforcing layer is located at this outwardly expanding arc shape. During the process, when this part comes into contact with a sharp object on the ground, the puncture resistance of the tire sidewall is enhanced. The metal embedded layer further improves the puncture resistance of the reinforcing layer.

[0006] Preferably, the metal inlay layer includes at least one mesh structure made of steel wire. Multiple dividing ribs are formed at equal angles around the outer side of the reinforcing layer around the tire axis. The dividing ribs are arranged in a straight line along their extension path. The multiple dividing ribs are distributed in a centripetal manner. The dividing ribs divide the reinforcing layer into multiple independent blocks. Scratches or cracks in a single block are physically blocked by the ribs to prevent them from spreading to adjacent areas. Furthermore, the dividing ribs further enhance the strength of the reinforcing layer.

[0007] Compared with the prior art, the advantages of this utility model are as follows:

[0008] 1. This utility model strengthens the outer periphery of the tire sidewall by setting up a reinforcing layer, a metal inlay layer, and a double-layer ply layer. When the tire bears weight and the outer periphery of the tire sidewall near the ground forms an arc-shaped protrusion, the lower surface of the protrusion can have its puncture resistance greatly improved due to the presence of the reinforcing layer, the metal inlay layer, and the double-layer ply layer. It can effectively resist the pressure from sharp objects on the ground, reduce the probability of tire sidewall damage, and improve the service life of the tire.

[0009] 2. This utility model divides the reinforcing layer into multiple independent blocks by setting partition ribs. When a sharp object punctures a block, the adjacent ribs act as a physical barrier to block the crack propagation path, ensuring that surface damage is limited to a single block. Furthermore, the lateral partition ribs further enhance tire grip. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0011] Figure 2 This is a cross-sectional view of the tire body of this utility model.

[0012] Figure 3 This utility model Figure 2 Enlarged view of point A.

[0013] Figure 4 This is a schematic diagram of the mesh structure of this utility model.

[0014] Reference numerals: 1. Carcass; 101. Crown; 102. Sidewall; 2. Reinforcing layer; 3. Cord layer; 4. Separating ribs; 5. Mesh structure. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Please see Figures 1 to 4 This embodiment provides a sidewall-reinforced polyurethane tire, including a tire body 1. A reinforcing layer 2 is formed on the outer periphery of the sidewall 102 of the tire body 1 near the crown 101. The reinforcing layer 2 is integrally formed with the tire body 1 and is manufactured using polyurethane. This eliminates the interface bonding defects (such as delamination and air bubbles) of traditional lamination processes and ensures the mechanical continuity of the transition area between the sidewall 102 and the crown 101.

[0017] The cross-section of the outer contour of the reinforcing layer 2 is a smoothly transitioning arc shape. The reinforcing layer 2 protrudes from the sidewall 102 on the sidewall 102. The outer ring of the reinforcing layer 2 connects to the crown 101 of the tire body 1 and matches the natural curvature of the sidewall 102 to reduce noise generated by air turbulence. When the sidewall 102 is compressed and expands outward, the protruding part of the reinforcing layer 2 will preferentially contact sharp objects on the ground to form a "sacrificial layer" to protect the core area of ​​the sidewall 102 of the tire body 1.

[0018] The tire carcass 1 portion facing the reinforcing layer 2 has a double-layer ply 3 embedded in it. The reinforcing layer 2 has a mesh structure 5 made of steel wire embedded in it, which further enhances the strength of the outer periphery of the tire sidewall 102, improves the puncture resistance of the tire sidewall 102 when it forms an arc-shaped protrusion under pressure, and reduces the probability of tire damage.

[0019] Multiple dividing ribs 4 are formed at equal angles around the axis of the tire body 1 on the outer side of the reinforcing layer 2. The dividing ribs 4 are arranged in a straight line along their extension path and are distributed centripetally. The ribs extend along the main force direction of the tire sidewall 102 (from the tire crown 101 to the axis) to form a "radial mechanical skeleton" that evenly transmits the ground pressure to the tire body 1. The dividing ribs 4 also divide the reinforcing layer 2 into multiple independent blocks. When a sharp object punctures a block, the adjacent ribs act as a physical barrier to block the crack propagation path, ensuring that the surface damage is limited to a single block. Furthermore, the lateral dividing ribs 4 further enhance the tire's grip. When driving on snow or turning, the lower part of the tire sidewall 102 will form an arc-shaped protrusion on the outside due to the pressure. The dividing ribs 4 at the bottom of the protrusion face the ground and can contact the ground to generate grip, thus improving the grip effect.

[0020] 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. A sidewall-reinforced polyurethane tire, comprising a tire carcass (1), characterized in that, A reinforcing layer (2) is formed on the outer periphery of the sidewall (102) of the tire body (1) near the crown (101). The reinforcing layer (2) is set to protrude from the sidewall (102) on the sidewall (102). The reinforcing layer (2) has a metal inlay layer embedded in it. The outer ring of the reinforcing layer (2) is connected to the crown (101) of the tire body (1).

2. The sidewall-reinforced polyurethane tire according to claim 1, characterized in that, The reinforcing layer (2) and the body (1) are integrally formed.

3. The sidewall-reinforced polyurethane tire according to claim 1, characterized in that, The metal inlay layer includes at least one layer of mesh structure made of steel wire material (5).

4. The sidewall-reinforced polyurethane tire according to claim 2, characterized in that, The cross-section of the outer contour of the reinforcing layer (2) is a smoothly transitioning arc shape.

5. The sidewall-reinforced polyurethane tire according to claim 4, characterized in that, The outer side of the reinforcing layer (2) is surrounded by multiple partition ribs (4) at equal angles around the axis of the tire body (1). The multiple partition ribs (4) are distributed in a centripetal manner, and the partition ribs (4) divide the reinforcing layer (2) into multiple independent blocks.

6. The sidewall-reinforced polyurethane tire according to claim 5, characterized in that, The part of the carcass (1) directly opposite the reinforcing layer (2) has a double-layer plywood layer (3) embedded inside.

7. The sidewall-reinforced polyurethane tire according to claim 5, characterized in that, The dividing rib (4) is arranged in a straight line along its extension path.

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