Tire structure

By introducing a solid inner tube and air intake channel into the tire structure, the problems of easy air leakage in pneumatic tires and poor cushioning in solid tires are solved, enabling normal use in an uninflated state and comfortable and safe driving after inflation.

WO2026158682A1PCT designated stage Publication Date: 2026-07-30XIAMEN LENCO
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
XIAMEN LENCO
Filing Date
2026-01-27
Publication Date
2026-07-30

AI Technical Summary

Technical Problem

Traditional pneumatic tires are easily punctured by sharp objects and leak air, while solid tires have poor cushioning and are uncomfortable to use.

Method used

Design a tire structure comprising a rim, an outer tire, and a solid inner tube. The inner circumference of the solid inner tube has grooves to form an air intake channel. When not inflated, the inner tube is in close contact with the outer tire. When inflated, the gas passes through the grooves and air channels to form a buffer gas layer, providing a cushioning and shock absorption effect, and still providing support when the outer tire is damaged.

Benefits of technology

It can be used normally when uninflated, and when inflated, it improves driving comfort and safety. Even if the solid inner tube is punctured, it can still provide support to ensure safe driving to the repair shop.

✦ Generated by Eureka AI based on patent content.

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    Figure CN2026075043_30072026_PF_FP_ABST
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Abstract

A tire structure, comprising a rim (3), an outer tire (2) and a solid inner tube (1), wherein a bead (21) of the outer tire (2) is hermetically connected to the rim (3); the solid inner tube (1) is arranged inside the outer tire (2); a groove (111) is provided on the inner annular surface of the solid inner tube (1); an air intake channel (4) in communication with an air inlet (31) of the rim (3) is formed between the groove (111) and the rim (3); several grooves (131) in communication with each other are densely distributed on the surface of a tread (13) of the solid inner tube (1); at least one sidewall (12) of the solid inner tube (1) is provided with at least one air channel (121) which is in communication with the groove (111) and the grooves (131); when the tire structure is not inflated, the tread (13) of the solid inner tube (1) tightly fits with the inner wall of the outer tire (2); and after inflation, cushioning air (5) is provided between the grooves (131) on the tread (13) of the solid inner tube (1) and the inner wall of the outer tire (2). In this way, the solid inner tube (1) is arranged inside the outer tire (2), such that the usage is safer and more reliable. In addition, after inflation, air enters each groove (131) along the inflation air channel (121), and forms the cushioning air (5), which can achieve the effects of cushioning and shock absorption, and therefore can effectively improve the driving experience.
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Description

A tire structure Technical Field

[0001] This invention relates to the technical field of tires. Background Technology

[0002] Traditional tires are mostly pneumatic tires, consisting of an inner tube and an outer tire, or a tubeless outer tire, often called a vacuum tire. The former inflates the inner tube, while the latter inflates the inner layer of the outer tire directly to support it. The outer tire is made of high-strength and wear-resistant materials. Pneumatic tires are easily punctured by sharp objects, leading to leaks and even blowouts, and they require periodic inflation, making them inconvenient to use. To address these shortcomings, solid tires have emerged on the market. While solid tires eliminate the hassle of inflation, they offer poor cushioning and are less comfortable to use. Summary of the Invention

[0003] The purpose of this invention is to provide a tire structure that has the advantages of safety maintenance without sacrificing comfort.

[0004] To achieve the above objectives, the solution of the present invention is:

[0005] A tire structure includes a rim, an outer tire, and a solid inner tube;

[0006] The tire bead of the outer tire is sealed to the rim, and the solid inner tube is installed inside the outer tire. The inner circumference of the solid inner tube has a groove, and the groove and the rim form an air intake channel that connects to the air intake of the rim.

[0007] The solid inner tube has a tread surface densely covered with several interconnected grooves, and at least one side of the solid inner tube has at least one air passage connecting the grooves and the tread.

[0008] When not inflated, the tread of the solid inner tube fits snugly against the inner wall of the outer tire;

[0009] After inflation, there is buffer gas between the grooves of the solid inner tube and the inner wall of the outer tire.

[0010] Furthermore, after inflation, the buffer gas also overflows into the space between the solid inner tube and the outer tire to form a buffer gas layer.

[0011] Furthermore, the solid inner tube is made of an elastic material and its size is larger than that of the outer tire; when not inflated, the solid inner tube is compressed and contained inside the outer tire; when inflated, the outer tire is expanded by the gas, while the solid inner tube returns to its original shape.

[0012] Furthermore, the groove is an annular structure that surrounds the inner surface of the solid inner tube.

[0013] Furthermore, the solid inner tube has several air passages on both sides, with the outer ends of all air passages connected to the grooves of the tire tread, and the inner ends of some air passages connected to the grooves.

[0014] Furthermore, the inner ends of all airways are connected to the inner annular surface, and the inner ends of some airways are connected to the grooves through connecting slots recessed in the inner annular surface.

[0015] Furthermore, the air passages on the tire sidewall are circumferentially evenly spaced and extend radially.

[0016] Furthermore, the grooves of the tire tread are interconnected and interwoven.

[0017] Furthermore, the grooves on the tread are distributed in an "X" shape.

[0018] Furthermore, the air passage is a groove structure recessed on the sidewall surface of the tire; after inflation, there is also buffer gas between the air passage and the inner wall of the outer tire.

[0019] By adopting the above technical solution, the present invention provides a solid inner tube inside the outer tire. When not inflated, the solid inner tube tread and the outer tire fit tightly together, and the tire can be used normally when not inflated. When inflated, the gas enters each groove along the grooves and air passages, causing the outer tire to expand. The gas can be evenly distributed along the densely distributed grooves, so that there is buffer gas between the grooves of the solid inner tube tread and the outer tire, which can play a role in cushioning and shock absorption, and can effectively improve the driving experience.

[0020] Because of its solid inner tube, even if the outer tire is accidentally punctured during driving, the solid inner tube can still provide sufficient support to ensure driving safety and allow the vehicle to be driven to a repair shop in a timely manner. Attached Figure Description

[0021] Figure 1 is a perspective view of a solid inner tube according to an embodiment of the present invention;

[0022] Figure 2 is a front view of a solid inner tube according to an embodiment of the present invention;

[0023] Figure 3 is a side view of a solid inner tube according to an embodiment of the present invention;

[0024] Figure 4 is a perspective view of the tire structure according to an embodiment of the present invention;

[0025] Figure 5 is a side view of the tire structure according to an embodiment of the present invention;

[0026] Figure 6 is a cross-sectional view at point AA in Figure 5, showing the uninflated state;

[0027] Figure 7 is a partial cross-sectional view of the tire structure according to an embodiment of the present invention, showing the inflation state.

[0028] Labeling explanation: Solid inner tube 1, inner ring 11, groove 111, connecting groove 112, sidewall 12, air passage 121, tread 13, groove 131, outer tire 2, tire bead 21, rim 3, air inlet 31, air inlet channel 4, cushioning air 5, cushioning air layer 6, tire structure 10. Embodiments of the present invention

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0030] As shown in Figures 1 to 3, this is a solid inner tube 1 according to this embodiment.

[0031] The inner circumference 11 of the solid inner tube 1 has a groove 111;

[0032] The surface of the tread 13 of the solid inner tube 1 is densely covered with a number of interconnected grooves 131, and at least one sidewall 12 of the solid inner tube 1 has at least one air passage 121 that connects the groove 111 and the groove 131.

[0033] Therefore, referring to Figures 4 to 7, the solid inner tube 1 of this embodiment can be applied to a tire structure 10 and has the advantage of good cushioning effect.

[0034] Specifically, the tire structure 10 includes a rim 3, an outer tire 2, and a solid inner tube 1;

[0035] The tire bead 21 of the outer tire 2 is sealed to the rim 3, and the solid inner tube 1 is provided inside the outer tire 2. The groove 111 of the solid inner tube 1 and the rim 3 form an air intake channel 4 that connects to the air intake 31 of the rim 3.

[0036] When not inflated, the tread 13 of the solid inner tube 1 fits snugly against the inner wall of the outer tube 2;

[0037] After inflation, a buffer gas 5 is provided between the tread groove 131 of the solid inner tube 1 and the inner wall of the outer tire 2.

[0038] Therefore, in this embodiment, a solid inner tube 1 is installed inside the outer tire 2. When not inflated, the tread 13 of the solid inner tube 1 and the outer tire 2 fit tightly together, and the tire can be used normally when not inflated. When inflated, the gas enters the air intake channel 4 from the air inlet 31, and then enters each groove 131 along the groove 111 and air passage 121, causing the outer tire 2 to expand. The gas can be evenly distributed along the densely distributed grooves 131, so that a buffer gas 5 can be formed between the grooves 131 of the tread 13 of the solid inner tube 1 and the outer tire 2, which can play a role in buffering and shock absorption, and can effectively improve the driving experience.

[0039] When inflation and pressurization continue, the buffer gas 5 can overflow into the space between the solid inner tube 1 and the outer tire 2 to form a buffer air layer 6, further improving the cushioning and shock absorption effect.

[0040] Because of the solid inner tube 1, even if the outer tire 2 is accidentally damaged during driving, the solid inner tube 1 can still provide sufficient support to ensure the safety of driving and allow the vehicle to be driven to a repair shop in a timely manner for repair.

[0041] In this embodiment, the solid inner tube 1 is made of an elastic material, and the size of the solid inner tube 1 can be equal to or greater than the size of the outer tire 2.

[0042] When the size of the solid inner tube 1 is larger than the size of the outer tire 2, when it is not inflated, the solid inner tube 1 will be compressed and contained inside the outer tire 2; when inflated, the outer tire 2 will expand due to the air, while the solid inner tube 1 will return to its original shape. Therefore, by setting the solid inner tube 1 and outer tire 2 of the tire to a structure with the inner tube larger than the outer tube, the tire's grip can be effectively improved, and it can also have a good cushioning effect.

[0043] As shown in Figures 1 to 3, the groove 111 in this embodiment can be an annular structure surrounding the inner annular surface 11 of the solid inner tube 1, which facilitates the installation of the solid inner tube 1. Regardless of the installation angle of the solid inner tube 1, it can easily form an air intake channel 4 that connects to the air intake 31 of the wheel rim 3.

[0044] In this embodiment, the two sides 12 of the solid inner tube 1 are provided with a plurality of air passages 121. The outer ends of all air passages 121 are connected to the grooves 131 of the tread 13, and the inner ends of some air passages 13 are connected to the grooves 111.

[0045] Gas can flow from groove 111 through air passage 121 to groove 131, thereby filling all grooves 131.

[0046] Specifically, the inner ends of all air passages 121 are connected to the inner annular surface 11, and the inner ends of some air passages 121 are connected to the groove 111 through the connecting groove 112 recessed in the inner annular surface 11.

[0047] In this embodiment, the air passages 121 of the sidewall 12 are circumferentially evenly spaced and extend radially. The air passages 121 can be groove structures recessed on the surface of the sidewall 12, so as to fill and form a buffer gas 5 between the sidewall 12 and the outer tire 2, and further form a uniform buffer gas layer 6.

[0048] The number of connecting grooves 112 may be less than the number of air passages 121. Each connecting groove 112 is also evenly spaced in the circumference and extends axially to connect the groove 111 and the inner end of the air passage 121. Multiple connecting grooves 112 facilitate the rapid flow of gas to the air passage 121.

[0049] In this embodiment, the grooves 131 of the tread 13 are interconnected and interwoven. Specifically, the grooves 131 of the tread 13 can be distributed in an "X" shape to facilitate rapid gas dispersion and flow, ensure uniform air layer, and guarantee cushioning and shock absorption effects.

[0050] The above description is only a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions that fall within the scope of the present invention are within the scope of protection of the present invention.

Claims

1. A tire structure, characterized in that: Includes rims, tires, and solid inner tubes; The tire bead of the outer tire is sealed to the rim, and the solid inner tube is installed inside the outer tire. The inner circumference of the solid inner tube has a groove, and the groove and the rim form an air intake channel that connects to the air intake of the rim. The solid inner tube has a tread surface densely covered with several interconnected grooves, and at least one side of the solid inner tube has at least one air passage connecting the grooves and the tread. When not inflated, the tread of the solid inner tube fits snugly against the inner wall of the outer tire; After inflation, there is buffer gas between the grooves of the solid inner tube and the inner wall of the outer tire.

2. The tire structure according to claim 1, characterized in that: After inflation, the buffer gas also overflows into the space between the solid inner tube and the outer tube to form a buffer gas layer.

3. The tire structure according to claim 1, characterized in that: The solid inner tube is made of an elastic material and its size is larger than that of the outer tire. When not inflated, the solid inner tube is compressed and contained inside the outer tire. When inflated, the outer tire is expanded by the gas, while the solid inner tube returns to its original shape.

4. A tire structure according to claim 1, characterized in that: The groove is an annular structure that surrounds the inner surface of the solid inner tube.

5. A tire structure according to claim 4, characterized in that: The solid inner tube has several air passages on both sides, and the outer ends of all air passages are connected to the grooves of the tire tread, while the inner ends of some air passages are connected to the grooves.

6. A tire structure according to claim 5, characterized in that: The inner ends of all airways are connected to the inner annular surface, and the inner ends of some airways are connected to the grooves through connecting slots recessed in the inner annular surface.

7. A tire structure according to claim 5, characterized in that: The air passages on the tire sidewall are circumferentially evenly spaced and extend radially.

8. A tire structure according to claim 3, characterized in that: The grooves in the tire tread are interconnected and interwoven.

9. A tire structure according to claim 8, characterized in that: The grooves on the tire tread are arranged in an "X" shape.

10. A tire structure according to claim 1, characterized in that: The air passage is a groove structure recessed on the sidewall surface of the tire; after inflation, there is also buffer gas between the air passage and the inner wall of the outer tire.