Bicycle tire inner tube protection bushing and bicycle tire

By adding a TPU protective bushing with a hardness higher than that of the outer tire to the bicycle tire, the problem of tires being easily punctured is solved, the service life of the inner tube is extended, and the environmental protection effect of energy saving and emission reduction is achieved.

CN224159127UActive Publication Date: 2026-04-24SHANGHAI HUBEN CULTURE COMMUNICATION CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI HUBEN CULTURE COMMUNICATION CO LTD
Filing Date
2025-08-12
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

Bicycle tires are easily punctured by sharp objects, leading to frequent inner tube replacements, which increases operating costs and is not environmentally friendly.

Method used

A protective bushing with a higher hardness than the outer tire is added to the bicycle tire to enclose the inner tire. The protective bushing is made of TPU material and can be threaded on the surface. It is the same shape as the inner tire and is installed in the inner cavity of the outer tire. The edge of the outer tire is clamped to the steel rim.

Benefits of technology

It effectively protects the inner tube from being punctured by sharp objects, extends the life of the inner tube, reduces the frequency of replacement, saves energy and reduces emissions, and improves the cost-effectiveness of riding.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a bicycle tire inner tube protection bushing and a bicycle tire, and relates to the technical field of tires. The bicycle tire inner tube protection bush is applied to a bicycle tire, the bicycle tire further comprises an inner tube, an outer tube and a steel ring, the protection bush wraps the inner tube, the protection bush and the inner tube are both installed in an inner cavity of the outer tube, and a bead on the edge of the outer tube clamps the steel ring; wherein the hardness of the protective bushing is greater than that of the outer tire. According to the bicycle tire provided by the invention, the protective bushing is additionally arranged, the material of the protective bushing has the characteristic of high hardness, and the inner tire is wrapped by the protective bushing, so that the protective bushing is difficult to pierce even if the outer tire is pierced by a sharp object when the sharp object encounters the sharp object, the inner tire is further effectively protected, and the service life of the inner tire is prolonged. The condition that the inner tube is punctured by sharp objects is prevented, and the service life of the bicycle inner tube is effectively prolonged.
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Description

Technical Field

[0001] This application relates to the field of tire technology, and more specifically, to a bicycle tire inner tube protective bushing and a bicycle tire. Background Technology

[0002] A bicycle, also known as a pedal bike or cyclist, is a small, two-wheeled land vehicle. It is powered by pedaling and is a green and environmentally friendly mode of transportation.

[0003] In the structure of a bicycle, the tire is crucial. Currently, bicycle tires generally consist of an outer tire, an inner tube, and a steel rim. When a user rides a bicycle, sharp objects such as splinters, gravel, or broken glass can easily puncture the outer and inner tires, causing the inner tube to leak air. This necessitates replacing the inner tube. This not only increases the user's operating costs, but frequent inner tube replacements also consume energy and resources, which is not environmentally friendly.

[0004] In summary, existing technologies suffer from the problem that tires are easily punctured by sharp objects. Utility Model Content

[0005] The purpose of this application is to provide a protective bushing for bicycle tire inner tubes to solve the problems of thin and soft tire walls lacking support and being easily punctured by sharp objects in the prior art.

[0006] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows:

[0007] On one hand, this application provides a bicycle tire inner tube protective bushing, which is applied to a bicycle tire. The bicycle tire also includes an inner tube, an outer tire, and a steel rim. The protective bushing encloses the inner tube, and both the protective bushing and the inner tube are installed inside the outer tire. The tire bead at the edge of the outer tire engages with the steel rim.

[0008] The hardness of the protective bushing is greater than that of the outer tire.

[0009] Optionally, the surface of the protective bushing is provided with a threaded structure.

[0010] Optionally, the thickness of the protective bushing is less than or equal to the thickness of the outer tire.

[0011] Optionally, the protective bushing is made of TPU material.

[0012] Optionally, the diameter of the protective bushing is any one of 12, 14, 16, 18, 20, 22, 24, 26, 27.5, and 29 inches.

[0013] Optionally, the width of the protective bushing is 1.5 to 4 inches.

[0014] Optionally, the protective bushing has the same shape as the inner tube.

[0015] Optionally, the protective bushing is configured as a circular inner ring side opening structure.

[0016] Optionally, the protective bushing is manufactured using a plastic extruder and a plastic injection molding machine.

[0017] On the other hand, this application embodiment also provides a bicycle tire, which includes the above-mentioned bicycle tire inner tube protective bushing.

[0018] Compared with the prior art, the embodiments of this application have the following beneficial effects:

[0019] This application provides a bicycle tire inner tube protective bushing and a bicycle tire. The bicycle tire inner tube protective bushing is applied to a bicycle tire, which also includes an inner tube, an outer tire, and a steel rim. The protective bushing encloses the inner tube, and both the protective bushing and the inner tube are installed inside the outer tire. The tire bead at the edge of the outer tire is secured to the steel rim. The protective bushing has a higher hardness than the outer tire. Because the bicycle tire provided by this application includes a protective bushing with high hardness, and because the protective bushing encloses the inner tube, even if a sharp object punctures the outer tire, it is difficult for the object to puncture the protective bushing. This effectively protects the inner tube, preventing it from being punctured by sharp objects and significantly extending the lifespan of the bicycle inner tube.

[0020] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a bicycle tire provided in an embodiment of this application.

[0023] Figure 2 This is a schematic diagram of an explosion of a bicycle tire provided in an embodiment of this application.

[0024] Figure 3 This is a cross-sectional schematic diagram of a bicycle tire provided in an embodiment of this application.

[0025] Figure 4 This is a schematic diagram of the bicycle tire layout provided in an embodiment of this application.

[0026] Figure 5 This is a schematic diagram of a protective bushing provided in an embodiment of this application.

[0027] Figure 6 This is a schematic diagram of a protective bushing provided in an embodiment of this application.

[0028] Figure 7 This is another schematic diagram of the protective bushing provided in the embodiments of this application.

[0029] In the picture:

[0030] 100 - Bicycle tire; 110 - Outer tire; 120 - Protective bushing; 121 - Threaded structure; 122 - Circular inner ring with side opening structure; 130 - Inner tube; 140 - Steel rim. Detailed Implementation

[0031] 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 only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0033] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] It should be noted that in this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0035] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0036] As described in the background section, bicycle tires inevitably encounter sharp objects such as splinters, gravel, and broken glass when used outdoors. To ensure riding comfort, bicycle tires are made of rubber, which is generally not very hard. Therefore, when encountering sharp objects, it is easy for the sharp object to puncture both the outer tire and the inner tube. Once the inner tube is punctured, air will leak from it, requiring the inner tube to be replaced.

[0037] Replacing the inner tube of a bicycle tire not only increases operating costs but is also environmentally unfriendly. This is especially true for mountain bikes, where the riding environment is more complex, increasing the likelihood of encountering sharp objects and making the inner tube more prone to punctures.

[0038] In view of this, in order to solve the above problems, this application provides a protective bushing for bicycle tire inner tubes, which protects the inner tube by adding a protective bushing.

[0039] The following is an exemplary description of the bicycle tire inner tube protective bushing provided in this application:

[0040] As an optional implementation, please refer to Figures 1-4 The bicycle tire inner tube protective bushing 120 is applied to a bicycle tire, and the bicycle tire 100 includes a steel rim 140, an inner tube 130 and an outer tire 110. The steel rim 140 is circular, and the protective bushing 120 wraps around the inner tube 130. The protective bushing 120 and the inner tube 130 are both installed in the inner cavity of the outer tire 110, and the tire bead at the edge of the outer tire 110 is clamped to the steel rim 140. The hardness of the protective bushing 120 is greater than that of the outer tire 110.

[0041] Because the bicycle tire 100 provided in this application includes a protective bushing 120, and the hardness of the protective bushing 120 is greater than that of the outer tire 110, when encountering a sharp object, even if the sharp object punctures the outer tire 110, it is not easy to puncture the protective bushing 120, thus protecting the inner tire 130 and preventing the inner tire 130 from being punctured and leaking air. At the same time, since the protective bushing 120 is installed inside the outer tire 110, it does not cause any hardening to the outer tire 110, and therefore will not affect the user's comfort during riding.

[0042] Furthermore, in one implementation, the surface of the protective bushing 120 is provided with an annular threaded structure. The threaded structure refers to the uneven structure on the surface of the protective bushing 120. This structure can enhance the support, shock absorption, and cushioning of the inflatable inner tube 130, as well as improve the overall cushioning of the bicycle wheelset. Moreover, by providing a threaded structure on the surface of the protective bushing 120, the outer side of the inner tube 130 has a locally expandable cushioning layer, thus reducing the likelihood of rim punctures and snake bites occurring on the inner tube 130 during high-intensity riding. A rim puncture refers to the inner tube 130 being squeezed between the rim 140 and the tire bead of the outer tire 110, resulting in a localized cut or crack; a snake bite refers to the inner tube 130 being squeezed by the rim edge due to insufficient tire pressure or severe impact, creating two adjacent small holes resembling snake teeth marks.

[0043] Please see Figures 5-7 The protective bushing 120 has an annular thread structure 121 on its surface, and a circular inner ring side opening structure 122 on its protective bushing 120, which can be used to wrap the inner tube 130.

[0044] Furthermore, the protective bushing 120 provided in this application has the characteristics of small size, light weight, high hardness, and good ductility. In one implementation, the thickness of the protective bushing 120 is less than or equal to the thickness of the outer tire 110. Meanwhile, the protective bushing 120 is made of TPU material (thermoplastic polyurethane rubber). Of course, the protective bushing 120 can also be made of modified TPU material, and this is not limited here.

[0045] Based on the use of TPU material to make the protective bushing 120, it can effectively prevent sharp objects such as splinters, gravel, and broken glass from puncturing the inner tube 130 and causing air leakage. Tests have shown that adding this product to the wheelset can extend the service life of the inner tube 130 and reduce the frequency of replacement, achieving energy conservation and emission reduction while saving users time, effort, and lowering riding costs. Therefore, the bicycle tire 100 provided in this application has puncture-resistant and impact-resistant functions, reducing energy and resource consumption caused by frequent replacement of damaged inner tubes 130, thus achieving the goal of energy conservation, emission reduction, and green environmentally friendly travel.

[0046] Understandably, in order to effectively protect the inner tube 130, the protective bushing 120 is circular, and the shape of the protective bushing 120 is the same as that of the inner tube 130, and the protective bushing 120 fits tightly against the inner tube 130.

[0047] Furthermore, this application does not limit the size of the protective bushing 120 or its manufacturing process. For example, the diameter of the protective bushing 120 may be any one of 12, 14, 16, 18, 20, 22, 24, 26, 27.5, and 29 inches. The width of the protective bushing 120 may be 1.5 to 4 inches. The protective bushing 120 can be manufactured using either a plastic extruder or an injection molding machine.

[0048] Of course, the outer tire 110 has a raised dot structure on its surface to improve the grip of the bicycle tire 100.

[0049] Based on the above implementation, this application embodiment also provides a bicycle tire, which includes the above-mentioned bicycle tire inner tube protective bushing.

[0050] In summary, this application provides a bicycle tire inner tube protective bushing and a bicycle tire. The bicycle tire inner tube protective bushing is applied to a bicycle tire, which also includes an inner tube, an outer tire, and a steel rim. The protective bushing encloses the inner tube, and both the protective bushing and the inner tube are installed inside the outer tire. The tire bead at the edge of the outer tire is secured to the steel rim. The protective bushing has a higher hardness than the outer tire. Because the bicycle tire provided by this application includes a protective bushing with high hardness, and because the protective bushing encloses the inner tube, even if a sharp object punctures the outer tire, it is difficult for the object to puncture the protective bushing. This effectively protects the inner tube, preventing it from being punctured by sharp objects and significantly extending the lifespan of the bicycle inner tube.

[0051] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0052] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A protective bushing for a bicycle tire inner tube, characterized in that, The bicycle tire inner tube protective bushing is applied to a bicycle tire, which also includes an inner tube, an outer tire, and a steel rim. The protective bushing encloses the inner tube, and both the protective bushing and the inner tube are installed inside the outer tire. The tire bead at the edge of the outer tire secures itself to the steel rim. The hardness of the protective bushing is greater than that of the outer tire.

2. The bicycle tire inner tube protective bushing as described in claim 1, characterized in that, The surface of the protective bushing is provided with a threaded structure.

3. The bicycle tire inner tube protective bushing as described in claim 1, characterized in that, The thickness of the protective bushing is less than or equal to the thickness of the outer tire.

4. The bicycle tire inner tube protective bushing as described in claim 1, characterized in that, The protective bushing is made of TPU material.

5. The bicycle tire inner tube protective bushing as described in claim 1, characterized in that, The diameter of the protective bushing is any one of 12, 14, 16, 18, 20, 22, 24, 26, 27.5, and 29 inches.

6. The bicycle tire inner tube protective bushing as described in claim 1, characterized in that, The width of the protective bushing is 1.5 to 4 inches.

7. The bicycle tire inner tube protective bushing as described in claim 1, characterized in that, The protective bushing has the same shape as the inner tube.

8. The bicycle tire inner tube protective bushing as described in claim 1, characterized in that, The protective bushing is configured as a circular inner ring side opening structure.

9. The bicycle tire inner tube protective bushing as described in claim 1, characterized in that, The protective bushing is manufactured using a plastic extruder and a plastic injection molding machine.

10. A bicycle tire, characterized in that, The bicycle tire includes the inner tube protective bushing as described in any one of claims 1 to 9.