Inflation-free tire

Abstract

The utility model discloses a non-pneumatic tire which comprises an outer tire body, and a tire bead end is arranged on the outer tire body; the tire comprises an outer tire body and a bead seat, a convex end is arranged on the bead seat, a concave end is arranged on the bead seat and is close to the convex end, the outer tire body and the bead seat are assembled to form a filling cavity, a polyurethane foaming rubber layer is arranged in the filling cavity, and a protective layer is arranged on the outer wall of the outer tire body. The anti-puncturing and anti-explosion bicycle tire has the beneficial effects that the technical problems that the bicycle tire in the prior art needs to be inflated, the anti-puncturing and anti-explosion effects are poor in the actual use process, and the service life of the bicycle tire is influenced are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of tires, specifically to a pneumatic tire. Background Technology

[0002] Tires are circular, elastic rubber products that are mounted on various vehicles or machinery and roll on the ground. They are usually mounted on metal rims, supporting the vehicle body, buffering external impacts, making contact with the road surface, and ensuring the vehicle's driving performance. Tires are often used under complex and harsh conditions, and they are subjected to various deformations, loads, forces, and high and low temperatures during driving. Therefore, they must have high load-bearing capacity, traction capacity, and cushioning capacity. In the current technology, bicycles need to use tires in actual use. However, bicycle tires need to be inflated frequently, and their wear resistance and puncture resistance are relatively poor, affecting their service life. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide a tire that does not require inflation, thus solving the technical problem that existing bicycle tires need to be inflated and have poor anti-puncture and anti-explosion effects during actual use, which affects the service life of bicycle tires.

[0004] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0005] In a first aspect, this utility model provides a pneumatic tire, comprising:

[0006] The outer tire body, wherein a tire bead end is provided on the outer tire body;

[0007] The tire bead seat has a protruding end and a recessed end near the protruding end. The tire body and the tire bead seat are assembled to form a filling cavity. A polyurethane foam layer is provided in the filling cavity, and a protective layer is provided on the outer wall of the tire body.

[0008] In some embodiments, the fetal lip end includes a first fetal lip and a second fetal lip, which are used to extend into the recessed end.

[0009] In some embodiments, the protruding end includes a first protrusion and a second protrusion, the first protrusion and the second protrusion are respectively disposed on both sides of the tire bead seat and are used to limit the first tire bead and the second tire bead, and a recessed end is provided between the first tire bead and the second tire bead.

[0010] In some embodiments, the recessed end includes a first recessed groove, a second recessed groove, and a third recessed groove; a first lip is provided in the first recessed groove, and a second lip is provided in the third recessed groove.

[0011] In some embodiments, the protective layer includes a reinforcing layer, a shock-absorbing layer, and a tread wear-resistant layer; the reinforcing layer, the shock-absorbing layer, and the tread wear-resistant layer are sequentially disposed on the outer tire body from bottom to top, and the reinforcing layer is a steel wire strap material layer.

[0012] In some embodiments, the damping layer includes a neoprene rubber layer and a styrene-butadiene rubber layer, wherein a damping ball is disposed on the neoprene rubber layer, and a buffer groove is formed on the side of the styrene-butadiene rubber layer facing the damping ball to cooperate with it.

[0013] In some embodiments, the wear-resistant tread layer is a polypropylene mesh belt filler layer, and its outer surface is provided with wear-resistant patterns.

[0014] In some embodiments, the outer tire body is a rubber tire.

[0015] Compared with the prior art, the present invention provides a pneumatic tire, which forms a filling cavity inside the tire body by setting a tire bead end on the tire body and setting a tire bead seat on the tire bead end. A polyurethane foam layer is injected into the filling cavity and the foam is uniformly expanded by a centrifugal device, thereby replacing the traditional pneumatic tire. Furthermore, a protective layer is set on the outer wall of the tire body to further extend the service life of the tire body. Attached Figure Description

[0016] Figure 1 This is a cross-sectional schematic diagram of the pneumatic tire provided in this embodiment of the utility model;

[0017] Figure 2 This is a schematic diagram of the assembly of the tire body and the tire bead seat of the airless tire provided in this embodiment of the utility model;

[0018] Figure 3 This is a schematic diagram of the protective layer structure of the pneumatic tire provided in this embodiment of the utility model;

[0019] Figure 4 This is a schematic diagram of the shock-absorbing layer structure of the airless tire provided in this embodiment of the utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Tire body; 11. Tire bead end; 111. First tire bead; 112. Second tire bead; 2. Tire bead seat; 21. Protruding end; 211. First protrusion; 212. Second protrusion; 22. Recessed end; 221. First recessed groove; 222. Second recessed groove; 223. Third recessed groove; 3. Filling cavity; 4. Polyurethane foam layer; 5. Protective layer; 51. Reinforcing layer; 52. Shock-absorbing layer; 521. Neoprene rubber layer; 5211. Shock-absorbing ball; 522. Styrene-butadiene rubber layer; 5221. Buffer groove; 53. Tread wear-resistant layer; 531. Abrasion-resistant pattern. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] To address the technical problem that existing bicycle tires require inflation and have poor puncture and explosion protection during actual use, thus affecting their lifespan, this invention provides a tire that does not require inflation. This tire can improve tire lifespan, and since it does not require inflation, it effectively enhances the tire's puncture and explosion protection.

[0023] It should be noted that the airless tire described in this utility model is used in, but not limited to, the field of bicycles. For ease of explanation, this utility model only uses the application of airless tires in the field of bicycles as an example. The principle of airless tires in other types of equipment is essentially the same as that in the field of bicycles, and will not be described in detail here.

[0024] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of a tire without inflation in one embodiment of the present invention. A tire without inflation includes an outer tire body 1, and a tire bead end 11 is provided on the outer tire body 1.

[0025] The tire bead seat 2 has a protruding end 21 and a recessed end 22 near the protruding end 21. The tire body 1 and the tire bead seat 2 are assembled to form a filling cavity 3. A polyurethane foam layer 4 is provided in the filling cavity 3, and a protective layer 5 is provided on the outer wall of the tire body 1.

[0026] In this embodiment, a tire bead end 11 is provided on the tire body 1, and a tire bead seat 2 is provided on the tire bead end 11, so that a filling cavity 3 is formed inside the tire body 1. A polyurethane foam layer 4 is quantitatively injected into the filling cavity 3, and it is uniformly expanded and foamed by a centrifugal device, thereby replacing the traditional pneumatic tire. A protective layer 5 is provided on the outer wall of the tire body 1 to further extend the service life of the tire body 1.

[0027] In one embodiment, please refer to Figure 1 and Figure 2 To facilitate the filling of the polyurethane foam layer, the tire bead end 11 includes a first tire bead 111 and a second tire bead 112. The first tire bead 111 and the second tire bead 112 are used to extend into the recessed end 22. The protruding end 21 includes a first protrusion 211 and a second protrusion 212. The first protrusion 211 and the second protrusion 212 are respectively disposed on both sides of the tire bead seat 2 and are used to limit the first tire bead 111 and the second tire bead 112. A recessed end 22 is provided between the first tire bead 111 and the second tire bead 112. The recessed end 22 includes a first recessed groove 221, a second recessed groove 222 and a third recessed groove 223. The first tire bead 111 is disposed in the first recessed groove 221 and the second tire bead 112 is disposed in the third recessed groove 223.

[0028] In this embodiment, a polyurethane foam layer 4 is injected into the filling wall formed between the outer tire body 1 and the tire bead seat 2, and is made to expand and foam evenly by a centrifugal device, so as to replace the pneumatic tire, making it less prone to air leakage and having the effects of explosion-proof and puncture-proof.

[0029] In one embodiment, please refer to Figure 3 - Figure 4 To further improve the protective properties of the tire body 1, the protective layer 5 includes a reinforcing layer 51, a shock-absorbing layer 52, and a tread wear-resistant layer 53. The reinforcing layer 51, the shock-absorbing layer 52, and the tread wear-resistant layer 53 are arranged sequentially from bottom to top on the tire body 1. The reinforcing layer 51 is a steel wire strap material layer. The shock-absorbing layer 52 includes a neoprene rubber layer 521 and a styrene-butadiene rubber layer 522. The neoprene rubber layer 521 is provided with shock-absorbing balls 5211, and the styrene-butadiene rubber layer 522 has a buffer groove 5221 that matches the shock-absorbing balls 5211 on the side facing the shock-absorbing balls 5211. The tread wear-resistant layer 53 is a polypropylene mesh filling layer, and its outer surface is provided with anti-wear patterns 531. The tire body 1 is a rubber tire.

[0030] In this embodiment, the steel wire strap material layer possesses high strength and puncture resistance. Its tensile strength and cut resistance are far superior to nylon or Kevlar fibers, effectively preventing sharp objects (such as glass and nails) from puncturing the tire tread and significantly improving the tire's run-flat capability. Furthermore, the shock-absorbing layer 52 uses a chloroprene rubber layer 521 and a styrene-butadiene rubber layer 522. The chloroprene rubber has a dense molecular structure and extremely low air permeability, effectively preventing slow air leakage and maintaining stable tire pressure. It also exhibits strong resistance to ultraviolet radiation, ozone, and oxidative degradation, making it less prone to cracking during long-term outdoor use and extending tire life. Additionally, it resists the intrusion of engine oil, fuel, and road chemicals (such as de-icing salt). The styrene-butadiene rubber (SBR) layer 52 is designed to prevent corrosion and deterioration of the tire sidewall or carcass due to chemical contact. As a shock-absorbing layer 52 beneath the tread, its high toughness and tear resistance can absorb impacts from sharp objects. The SBR layer 522 has strong anti-aging and heat resistance, and its anti-oxidation and anti-UV capabilities are superior to natural rubber. It is not prone to hardening and cracking after long-term use, thus ensuring the tire's service life. The shock-absorbing effect of the tire is further enhanced by setting shock-absorbing balls 5211 and buffer grooves 5221. The polypropylene mesh filling layer has good impact resistance and deformation resistance, making the tire body less prone to breakage under long-term use, and extending the tire's service life.

[0031] To better understand this utility model, the following is combined with... Figures 1 to 4The technical solution of this utility model is described in detail as follows: By providing a first protrusion 211 and a second protrusion 212 on the tire bead seat 2, a first recessed groove 221, a second recessed groove 222, and a third recessed groove 223 are formed on the tire bead seat 2. The first recessed groove 221 and the third recessed groove 223 can effectively limit the first tire bead 111 and the second tire bead 112 on the tire body 1 and form a filling cavity 3. According to the quantitative amount of the internal space of the filling cavity 3, the polyurethane foam layer 4 is injected into the filling cavity. The polyurethane foam layer 4 is expanded and foamed within the cavity 3 using an external centrifugal device, thus replacing the pneumatic tire and making it suitable for vehicles such as tricycles, bicycles, or wheelchairs. A protective layer 5 is provided on the outer tire body 1, comprising a reinforcing layer 51, a shock-absorbing layer 52, and a tread wear-resistant layer 53. The reinforcing layer 51 is a steel wire strap material layer, possessing high strength and puncture resistance. Its tensile strength and cut resistance are far superior to nylon or Kevlar fibers, effectively blocking sharp objects (such as glass). (Nail) punctures to the tread significantly improve the tire's run-flat capability; the shock-absorbing layer 52 uses a chloroprene rubber layer 521 and a styrene-butadiene rubber layer 522. The dense molecular structure of chloroprene rubber effectively prevents slow air leakage, maintains stable tire pressure, and has strong resistance to ultraviolet rays, ozone, and oxidative degradation. It is not prone to cracking after long-term outdoor use, extending tire life. It also resists the corrosion of engine oil, fuel, and road chemicals, preventing the sidewall or tire body from deteriorating due to chemical contact. As a shock-absorbing layer 52 under the tread, its high toughness and tear resistance can absorb the impact of sharp objects. The styrene-butadiene rubber layer 522 has strong anti-aging and heat resistance, and its anti-oxidation and anti-ultraviolet capabilities are superior to natural rubber. It is not prone to hardening and cracking after long-term use, ensuring the tire's service life. By setting shock-absorbing balls 5211 and buffer grooves 5221, the tire's shock absorption effect is further enhanced. The polypropylene mesh filling layer has good impact resistance and deformation resistance, making the tire body less prone to breakage under long-term use, and extending the tire's service life.

[0032] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A pneumatic tire, characterized in that, include: The outer tire body, wherein a tire bead end is provided on the outer tire body; The tire bead seat has a protruding end and a recessed end near the protruding end. The tire body and the tire bead seat are assembled to form a filling cavity. A polyurethane foam layer is provided in the filling cavity, and a protective layer is provided on the outer wall of the tire body.

2. The airless tire according to claim 1, characterized in that: The fetal lip end includes a first fetal lip and a second fetal lip, which are used to extend into the concave end.

3. The airless tire according to claim 2, characterized in that: The protruding end includes a first protrusion and a second protrusion, which are respectively disposed on both sides of the tire bead seat and are used to limit the first tire bead and the second tire bead. A recessed end is provided between the first tire bead and the second tire bead.

4. The airless tire according to claim 3, characterized in that: The recessed end includes a first recessed groove, a second recessed groove, and a third recessed groove; a first lip is provided in the first recessed groove, and a second lip is provided in the third recessed groove.

5. The airless tire according to claim 1, characterized in that: The protective layer includes a reinforcement layer, a shock-absorbing layer, and a tread wear-resistant layer; the reinforcement layer, the shock-absorbing layer, and the tread wear-resistant layer are sequentially disposed on the outer tire body from bottom to top, and the reinforcement layer is a steel wire strap material layer.

6. The pneumatic tire according to claim 5, characterized in that: The damping layer includes a neoprene rubber layer and a styrene-butadiene rubber layer. The neoprene rubber layer is provided with damping balls, and the styrene-butadiene rubber layer has a buffer groove on the side facing the damping balls to cooperate with them.

7. A pneumatic tire according to claim 6, characterized in that: The wear-resistant tread layer is a polypropylene mesh belt filler layer, and its outer surface is provided with wear-resistant patterns.

8. The airless tire according to claim 1, characterized in that: The outer tire body is a rubber tire.

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