High-elasticity motorcycle inner tube
By combining a multi-layered structure with different materials, the problem of insufficient elasticity in motorcycle inner tubes has been solved, resulting in greater stability and comfort, and extended service life.
Patent Information
- Application Number
- CN202520660827.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-04-09
AI Technical Summary
Existing motorcycle inner tubes have insufficient elasticity, making them prone to deformation, which reduces stability and comfort, and makes them unsafe and unreliable.
It adopts a multi-layer structure design, including an inner tube, a carcass ply, an elastic layer with multiple air bladders, and an outer buffer layer. Different types of rubber and polyester fiber materials are used to enhance the overall elasticity and stability of the inner tube.
It improves the elasticity and stability of the inner tube, enhances safety and durability, extends service life, and maintains good performance, especially in low-temperature environments.
Smart Images

Figure CN223864629U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motorcycle inner tube technology, specifically to a high-elasticity motorcycle inner tube. Background Technology
[0002] Tires are annular, elastic rubber products that roll and come into contact with the ground, mounted on various vehicles or machinery. They are typically mounted on metal rims, supporting the vehicle body, cushioning external impacts, ensuring contact with the road surface, and guaranteeing vehicle performance. Tires are often used under complex and harsh conditions, enduring various deformations, loads, forces, and extreme temperatures during operation; therefore, they must possess high load-bearing capacity, traction, and cushioning performance. The inner tube, also known as the inner tube, is an annular elastic tube with a valve stem used to maintain tire pressure. The valve stem is used for inflation and to maintain a certain air pressure within the inner tube. Inner tubes should have good airtightness, heat resistance, elasticity, aging resistance, and minimal permanent deformation. They are generally made of butyl rubber. Inner tubes are air-bearing containers used for inflation and vibration damping, serving as auxiliary pressure vessels within the tire cavities of automobiles, motorcycles, bicycles, and rickshaws. Based on their main material composition, they can be divided into natural rubber inner tubes and butyl rubber inner tubes. There is also a newer product: pure butyl rubber inner tubes, such as the "Baolujie" pure butyl rubber inner tube produced by Zhengzhou Aode Rubber. Butyl rubber inner tube products: These are products made from butyl rubber and butyl recycled rubber as the main raw materials, with the addition of EPDM rubber, fillers, additives, anti-aging agents, and other auxiliary materials, formulated in a certain proportion, and processed into various types of automotive inner tube products after mixing, internal mixing, molding, vulcanization and setting.
[0003] Motorcycle tubeless tires can be fitted with inner tubes, provided that the original tubeless tire is not damaged and the inner tube is not worn through, and a reliable quality inner tube is chosen. Motorcycles do not have inner tube pressure; the standard tire pressure is generally 170 kPa for the front tire and 200-220 kPa for the rear tire. Normally, a motorcycle tire pressure between 2.2 and 2.5 bar is considered normal. If the tire pressure is too high, the tire center will become irregular, increasing the risk of a tire blowout at high speeds in hot summer weather. It will also exacerbate vehicle bumps, affecting comfort and potentially damaging other parts. When repairing, prepare tools such as tire pry bar, sandpaper, glue, and tire patch. Ensure the working environment is clean and dry. Remove the inner tube from the tire, inflate it, and soak it in water. Observe where bubbles appear to determine the location of the puncture. Use sandpaper to sand around the puncture area, making the area slightly larger than the tire patch. Be careful to apply even pressure and avoid over-sanding. Apply glue evenly to the sanded area and wait until it is no longer sticky. Align the tire patch with the puncture area and press it firmly to ensure there are no air bubbles or wrinkles. Use a roller or other tools to press the repaired area firmly to make the tire patch bond more securely to the inner tube.
[0004] Currently, motorcycle inner tubes are typically made of a single layer of butyl rubber, which is neither safe nor durable. The specification of a puncture-resistant motorcycle inner tube in existing technology (publication number CN221437631U) mentions that "a buffer layer is provided on the outer wall of the inner tube base layer, a reinforcing layer is provided on the outside of the buffer layer, multiple evenly distributed buffer pads are provided between the buffer layer and the reinforcing layer, a puncture-resistant layer is provided on the outer wall of the reinforcing layer, and an outer protective layer is provided on the outer wall of the puncture-resistant layer." However, the elasticity of the inner tube structure in existing technology is insufficient, making it prone to deformation, which reduces its stability and comfort during use, and makes it neither safe, reliable, nor durable. Utility Model Content
[0005] To overcome the shortcomings of existing technologies, a high-elasticity motorcycle inner tube is provided to solve the problem that the inner tube structure of existing technologies has insufficient elasticity, is prone to deformation, and thus reduces its stability and comfort, and is not safe, reliable and durable.
[0006] To achieve the above objectives, a high-elasticity motorcycle inner tube is provided, comprising an inner tube, an inner surface being provided on the inner side of the inner surface, a carcass ply being provided on the outer side of the carcass ply, a first elastic layer being provided on the outer side of the first elastic layer, a metal mesh layer being provided on the outer side of the first elastic layer, a middle buffer layer being provided on the outer side of the metal mesh layer, a second elastic layer being provided on the outer side of the middle buffer layer, an outer buffer layer being provided on the outer side of the second elastic layer, and an outer tire tread being provided on the outer side of the outer buffer layer.
[0007] Furthermore, the inner surface is made of butyl rubber, and the tire carcass ply is made of polyester fiber.
[0008] Furthermore, the first elastic layer is provided with multiple sets of first airbags, and the first airbags adopt a spherical airbag structure, and the first elastic layer is made of natural rubber.
[0009] Furthermore, a second elastic layer is provided on the outer side of the middle buffer layer, and multiple sets of second airbags are provided inside the second elastic layer. The middle buffer layer is made of butadiene rubber, and the second elastic layer is made of natural rubber.
[0010] Furthermore, the second airbag adopts an elliptical airbag structure, and both the first and second airbags are made of styrene-butadiene rubber.
[0011] Furthermore, the outer buffer layer is made of ethylene propylene rubber, and the outer tire tread is made of butyl and halogenated butyl rubber.
[0012] Furthermore, the outer ring surface of the tire tread is provided with multiple sets of anti-slip patterns, and the anti-slip patterns adopt a rectangular anti-slip pattern structure and are made of PA dynamic thermoplastic elastomer material.
[0013] The beneficial effects of this utility model are as follows:
[0014] 1. The inner surface and the carcass ply layer of this utility model are more robust and secure, less prone to corrosion and weathering, and have a longer service life.
[0015] 2. The present invention has a first elastic layer with a first air bladder and a second elastic layer with a second air bladder inside the inner tube, which constitute a double elastic structure layer. The first air bladder and the second air bladder provide high elasticity and cushioning performance, making it safer, more stable and reliable to use, and helping to increase the overall elasticity of the inner tube.
[0016] 3. The outer buffer layer and outer tire tread of this utility model have high strength. The halogenated butyl rubber has better cold resistance, wear resistance and crack resistance, making it suitable for use in cold weather. It can ensure that the tire elastic layer still has good elasticity and performance in low temperature environment. Moreover, the anti-slip pattern has high elasticity, high toughness and high wear resistance. After installation, it is safer and more stable, not easy to fall off, and more stable and durable.
[0017] 4. This utility model not only has a robust and corrosion-resistant inner tube, but also features a double elastic structure layer with air bladders inside the inner tube to enhance the overall elastic strength of the inner tube, thereby ensuring its stability and comfort during use. Furthermore, the outer tire layer is more robust and wear-resistant, making it safe, reliable, and long-lasting. Attached Figure Description
[0018] Figure 1 This is a front view schematic diagram of an embodiment of the present utility model;
[0019] Figure 2 This is a cross-sectional schematic diagram of an embodiment of the present utility model;
[0020] Figure 3 This is a schematic diagram showing a partial structural effect of an embodiment of the present utility model;
[0021] Figure 4 This is a partial internal structural diagram of an embodiment of the present utility model;
[0022] Figure 5 This is a top view of a partial structural outer surface of an embodiment of the present invention.
[0023] In the diagram: 1. Inner tube; 10. Inner surface; 11. Carcass ply layer; 12. First air bladder; 13. First elastic layer; 14. Metal mesh layer; 15. Middle buffer layer; 16. Second air bladder; 17. Second elastic layer; 18. Outer buffer layer; 19. Outer tire tread; 100. Anti-skid pattern. Detailed Implementation
[0024] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. The specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. Specific details, such as particular system structures and technologies, are provided to facilitate a more thorough understanding of the embodiments of the present utility model. The described embodiments are some, but not all, of the embodiments disclosed herein. However, those skilled in the art should understand that the present utility model can also be implemented in other embodiments without these specific details. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.
[0025] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0026] Figure 1 This is a front view schematic diagram of an embodiment of the present utility model. Figure 2 This is a cross-sectional schematic diagram of an embodiment of the present utility model. Figure 3 This is a schematic diagram showing a partial structural effect of an embodiment of the present utility model. Figure 4 This is a partial structural internal unfolding diagram of an embodiment of the present utility model and Figure 5 This is a top view of a partial structural outer surface of an embodiment of the present invention.
[0027] Reference Figures 1 to 5 As shown, this utility model provides a high-elasticity motorcycle inner tube, including an inner tube 1. The inner tube 1 has an inner surface 10 on its inner side, and a carcass ply layer 11 is provided on the outer side of the inner surface 10. A first elastic layer 13 is provided on the outer side of the carcass ply layer 11, and a metal mesh layer 14 is provided on the outer side of the first elastic layer 13. A middle buffer layer 15 is provided on the outer side of the metal mesh layer 14, and a second elastic layer 17 is provided on the outer side of the middle buffer layer 15. An outer buffer layer 18 is provided on the outer side of the second elastic layer 17, and an outer tire tread 19 is provided on the outer side of the outer buffer layer 18.
[0028] In this embodiment, the inner surface 10 is made of butyl rubber, and the carcass ply 11 is made of polyester fiber.
[0029] As a preferred embodiment, the inner surface 10 and the tire cord layer 11 in this utility model are more robust and secure, less prone to corrosion and weathering, and have a longer service life.
[0030] In this embodiment, a plurality of first airbags 12 are disposed within the first elastic layer 13, and the first airbags 12 adopt a spherical airbag structure, and the first elastic layer 13 is made of natural rubber; a second elastic layer 17 is disposed on the outer side of the middle buffer layer 15, and a plurality of second airbags 16 are disposed within the second elastic layer 17, and the middle buffer layer 15 is made of butadiene rubber, and the second elastic layer 17 is made of natural rubber; the second airbags 16 adopt an elliptical airbag structure, and both the first airbags 12 and the second airbags 16 are made of styrene-butadiene rubber.
[0031] As a preferred embodiment, the present invention provides a double elastic structure layer in which a first elastic layer 13 with a first air bladder 12 and a second elastic layer 17 with a second air bladder 16 are provided inside the inner tube 1. The first air bladder 12 and the second air bladder 16 provide high elasticity and cushioning performance, making the use safer, more stable and reliable, and helping to increase the overall elasticity of the inner tube body.
[0032] In this embodiment, the outer buffer layer 18 is made of ethylene propylene rubber, and the outer tire tread 19 is made of butyl and halogenated butyl rubber. Multiple anti-slip patterns 100 are provided in the middle of the outer ring surface of the outer tire tread 19, and the anti-slip patterns 100 adopt a rectangular anti-slip pattern structure and are made of PA dynamic thermoplastic elastomer material.
[0033] As a preferred embodiment, the outer buffer layer 18 and the outer tire tread 19 of this utility model have high strength. The halogenated butyl rubber has better cold resistance, wear resistance and crack resistance, making it suitable for use in cold weather. It can ensure that the tire elastic layer still has good elasticity and performance in low temperature environment. Moreover, the anti-slip pattern 100 has high elasticity, high toughness and high wear resistance, making it safer and more stable after installation, less prone to detachment, and more stable and durable.
[0034] This invention effectively solves the problem of insufficient elasticity in the inner tube structure of existing technologies, which makes it prone to deformation, resulting in reduced stability and comfort, and making it unsafe, unreliable, and undurable. This invention not only makes the inner tube sturdy and corrosion-resistant, but also incorporates a double elastic structure layer with air bladders to enhance the overall elastic strength of the inner tube, thereby ensuring its stability and comfort. Furthermore, the outer tire layer is more robust and wear-resistant, making it safe, reliable, and long-lasting.
[0035] The above embodiments are used to explain and illustrate the present utility model, and not to limit the utility model. Any modifications and changes made to the present utility model within the spirit and scope of the claims should be included within the protection scope of the present utility model.
Claims
1. A high-elasticity motorcycle inner tube, characterized in that: The device includes an inner tube (1), an inner surface (10) is provided on the inner side of the inner tube (1), and a carcass ply (11) is provided on the outer side of the inner surface (10). A first elastic layer (13) is provided on the outer side of the carcass ply (11), and a metal mesh layer (14) is provided on the outer side of the first elastic layer (13). A middle buffer layer (15) is provided on the outer side of the metal mesh layer (14), and a second elastic layer (17) is provided on the outer side of the middle buffer layer (15). An outer buffer layer (18) is provided on the outer side of the second elastic layer (17), and an outer tire tread (19) is provided on the outer side of the outer buffer layer (18).
2. The high-elasticity motorcycle inner tube according to claim 1, characterized in that, The inner surface (10) is made of butyl rubber, and the carcass ply (11) is made of polyester fiber.
3. The high-elasticity motorcycle inner tube according to claim 1, characterized in that, The first elastic layer (13) is provided with multiple sets of first airbags (12), and the first airbags (12) adopt a spherical airbag structure, and the first elastic layer (13) is made of natural rubber.
4. The high-elasticity motorcycle inner tube according to claim 1, characterized in that, The outer side of the middle buffer layer (15) is provided with a second elastic layer (17), and multiple sets of second airbags (16) are provided inside the second elastic layer (17). The middle buffer layer (15) is made of butadiene rubber, and the second elastic layer (17) is made of natural rubber.
5. A high-elasticity motorcycle inner tube according to claim 4, characterized in that, The second airbag (16) adopts an elliptical airbag structure, and both the first airbag (12) and the second airbag (16) are made of styrene-butadiene rubber.
6. A high-elasticity motorcycle inner tube according to claim 1, characterized in that, The outer buffer layer (18) is made of ethylene propylene rubber, and the outer tire surface (19) is made of butyl and halogenated butyl rubber.
7. A high-elasticity motorcycle inner tube according to claim 1, characterized in that, The outer ring surface of the tire tread (19) is provided with multiple sets of anti-slip patterns (100), and the anti-slip patterns (100) adopt a rectangular anti-slip pattern structure and are made of PA dynamic thermoplastic elastomer material.
Citation Information
Patent Citations
Anti-pricking motorcycle inner tube
CN221437631U