PBO fiber tubular material and integrated handlebar and seat post

Abstract

The utility model discloses a PBO fiber tubular material and an integrated handlebar and seat post, the PBO fiber tubular material comprises an outer layer, an inner layer and a middle layer, the outer layer is a PBO fiber layer woven in a cross mode, the inner layer is an anti-impact PBO fiber reinforcing layer, the middle layer is a continuously wound PBO fiber reinforcing layer, and the outer layer is a PBO fiber layer woven in a cross mode. And the outer layer, the inner layer and the middle layer are soaked in epoxy resin to form an integrated hollow structure. The light-weight high-strength composite board has the advantages of light weight and high strength, also has good impact resistance and fatigue resistance, and can meet the stability requirement under long-time use. In addition, the material is cured and formed after being soaked in epoxy resin, so that all layers of structures are tightly combined to form an integrated hollow tubular structure, and the corrosion resistance and the structural strength of the material are effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bicycle technical field discloses a PBO fiber tubular material and integrated handlebar, seat rod. BACKGROUND

[0002] With the wide application of bicycles and motorcycles and other transportation tools and sports equipment, people's requirements for the strength, weight, durability and aesthetics of these equipment are also gradually increasing. In traditional manufacturing, the handlebars, seat rods and other components of bicycles and motorcycles usually use metal materials such as aluminum alloy, carbon steel, etc. Although these metal materials have good mechanical properties, the high density of metal makes the weight of the components larger, affecting the lightweight development of vehicles. In addition, metal materials are prone to fatigue when subjected to high-frequency impact, and may develop micro-cracks after long-term use, resulting in a decrease in overall structural strength. In harsh environments, such as humid or highly corrosive environments, metal materials will also corrode, affecting the service life and safety of the product.

[0003] In recent years, with the progress of composite material technology, high-performance fiber materials have gradually been applied to lightweight and high-strength structural components. For example, carbon fiber materials are widely used in the frames, handlebars and seat rods of bicycles and motorcycles. However, carbon fiber materials still have certain limitations in terms of impact resistance and durability. Carbon fiber is relatively brittle and can easily break when subjected to large impacts or bending, limiting its application in high-impact environments. In order to further improve the application performance of composite materials in bicycle and motorcycle components, the development of a fiber material with higher strength, impact resistance and corrosion resistance has become a research focus in the industry. SUMMARY

[0004] To solve the above problems, the utility model provides a PBO fiber tubular material and integrated handlebar, seat rod.

[0005] The technical solutions provided by the utility model are as follows:

[0006] A PBO fiber tubular material, comprising an outer layer, an inner layer and an intermediate layer, the outer layer being a cross-woven PBO fiber layer, the inner layer being an impact-resistant PBO fiber reinforced layer, and the intermediate layer being a continuously-wound PBO fiber reinforced layer, the outer layer, the inner layer and the intermediate layer being formed into an integrated hollow structure after impregnation with epoxy resin.

[0007] In some embodiments, the PBO fiber layer is double-axially woven.

[0008] In some embodiments, the PBO fiber reinforced layer is multi-axially woven.

[0009] An integrated handlebar is applied to the PBO fiber tubular material, comprising an integrated main rod, a bend pipe part and a handle part made of PBO fiber tubular material.

[0010] In some embodiments, the PBO fiber layers are arranged in an interlaced woven structure at the positions of the main rod and the bend pipe part, and the PBO fiber layers are arranged in an interlaced woven structure at the positions of the bend pipe part and the handle part.

[0011] In some embodiments, the outer side of the handle part is provided with a wear-resistant and anti-skid coating.

[0012] An integrated seat rod is applied to the PBO fiber tubular material, comprising a middle pipe section and a seat connecting section made of PBO fiber tubular material, the middle pipe section being used for connecting a frame, and the seat connecting section being used for connecting a seat.

[0013] In some embodiments, the middle pipe section and the seat connecting section of the seat rod are connected through a multi-layer composite structure composed of continuously wound PBO fiber layers.

[0014] In summary, the beneficial effects of the present application are as follows:

[0015] (1) The PBO fiber tubular material of the present application has the advantages of light weight and high strength, and also has good impact resistance and fatigue resistance, which can meet the stability requirements under long-term use, through the structural design of the outer interlaced woven PBO fiber layer, the middle continuous winding PBO fiber reinforced layer and the inner impact-resistant PBO fiber reinforced layer.

[0016] (2) The handlebar and seat rod made of the PBO fiber tubular material of the present application not only realize overall lightweight design and improve the riding experience, but also have significant advantages in impact resistance, durability and environmental adaptability. The anti-skid design of the handlebar further improves the safety in use, and is suitable for long-term use under different environmental conditions. Overall, the technical scheme of the present application has better mechanical properties, environmental adaptability and higher safety in use, and has a wide application prospect in bicycle sports equipment. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 is a schematic diagram of the cross-sectional structure of the tubular material;

[0018] Fig. 2 is a schematic diagram of the structure of the integrated handlebar;

[0019] Fig. 3 is a schematic diagram of the structure of the seat pipe.

[0020] The reference signs are as follows:

[0021] 1. Outer layer; 2. Inner layer; 3. Middle layer; 4. Main rod; 5. Bend section; 6. Handle section; 7. Middle tube section; 8. Seat connection section; 9. Wear-resistant and anti-slip coating. Detailed Implementation

[0022] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0023] Example 1

[0024] like Figs. 1-3 As shown, this embodiment provides a PBO fiber tubular material. The tubular material has an outer layer 1, an inner layer 2, and a middle layer 3. The combination of these layers gives the material the characteristics of high strength, lightweight, impact resistance, and corrosion resistance.

[0025] The inner layer 2 is an impact-resistant PBO fiber reinforcement layer. Inner layer 2 is made of specially formulated PBO fiber cloth, which is cured after multi-layer stacking and epoxy resin impregnation. This layer is designed to improve the pipe's impact resistance and fatigue resistance. Especially during use, inner layer 2 provides excellent buffering against high stresses within the pipe, enhancing the overall durability of the pipe.

[0026] The intermediate layer 3 is a continuously wound PBO fiber reinforcement layer. PBO fibers are uniformly wound onto the outer layer 1 of the pipe using a winding process, continuously wound onto the inner layer 2 at ±45° angles to achieve multi-directional reinforcement. This winding method of the intermediate layer 3 provides the pipe with strength in bending and torsional directions, making it suitable for complex stress environments.

[0027] The outer layer 1 is a cross-woven PBO fiber layer. PBO (poly(terephthalamide)) fiber has excellent properties such as high strength, tensile strength, and bending resistance. The PBO fiber of the outer layer 1 is woven using a biaxial weaving method, that is, weaving alternately in the 0° and 90° directions. This structure gives the tubular material better tensile and impact resistance under stress. During the weaving process, the PBO fibers are uniformly tensioned by the equipment, so that the fibers form a uniform and dense structure on the outer surface of the tubular material.

[0028] The outer layer 1, middle layer 3, and inner layer 2 are impregnated with epoxy resin and then molded at high temperature, forming a unified hollow structure. The epoxy resin not only acts as an adhesive but also further enhances the material's corrosion resistance and impact resistance. During the epoxy resin curing process, temperature and pressure are controlled to ensure tight bonding between the layers, thus guaranteeing the overall mechanical properties of the material.

[0029] To verify the actual performance of the PBO fiber tubular material, the following mechanical property tests were conducted:

[0030] Tensile strength test: Tensile tests were conducted in 0° and 90° directions to test the tensile strength of the biaxial woven PBO fiber layer. The results showed that the material exhibited high tensile strength in both directions, making it suitable for applications in structures requiring high load support.

[0031] Impact resistance test: Impact tests were conducted to simulate impact conditions in actual use, and the results showed that the impact-resistant PBO fiber reinforced layer of inner layer 2 effectively absorbed impact energy, allowing the pipe to maintain its integrity after impact.

[0032] Fatigue resistance test: Fatigue tests were conducted under cyclic bending load conditions. The material remained stable in its mechanical properties under long-term, repeated load, making it suitable for high-stress scenarios requiring long-term use.

[0033] Example 2

[0034] The integrated handlebar in this example is made of the above-mentioned PBO fiber tubular material and is solidified and formed in a mold, with an integrated main rod 4, elbow section 5, and handle section 6. The design of the handlebar takes advantage of the high strength and lightweight characteristics of the PBO fiber tubular material, resulting in a structure that is both strong and lightweight, making it suitable for high-performance bicycles.

[0035] Further, at the position where the main rod 4 and the elbow section 5 are connected, interlaced woven PBO fiber layers are used to improve the bending stiffness and durability of the handlebar. This weaving method arranges the fibers at a reasonable angle, allowing the handlebar to better distribute stress and reduce fatigue damage when subjected to a large impact. Similarly, at the connection between the elbow section 5 and the handle section 6, interlaced woven PBO fiber layers are also used, resulting in a region with higher bending strength.

[0036] Further, to improve the grip comfort and safety of the handle, a wear-resistant and anti-slip coating 9 is provided on the outside of the handle section 6. This coating is made of rubber or silicone material and has good anti-slip and wear-resistant properties, allowing the handlebar to provide good grip even in wet and slippery conditions, enhancing the safety of cycling.

[0037] Example 3

[0038] The integrated seat rod in this example is made of the above-mentioned PBO fiber tubular material and is solidified and formed in a mold, with an integrated middle tube section 7 and seat connection section 8. The middle tube section 7 is used to connect the frame, and the seat connection section 8 is used to connect the saddle. The use of PBO fiber tubular material improves the impact resistance and fatigue resistance of the seat rod, allowing it to remain stable even after long-term use.

[0039] Between the middle tube section 7 and the seat connecting section 8, a continuous winding multi-layer PBO fiber composite structure is adopted to improve the structural strength of the connecting part. The winding process passes through the multi-layer winding of PBO fiber layers with different angles, so that the connecting section can effectively reduce the risk of damage when bearing impact. The connecting part matched with the seat is directly formed in the seat connecting section 8 during solidification and forming.

[0040] It should be noted that the implementation not shown or described in the drawings or the specification is the form known by those skilled in the art, and is not described in detail. In addition, the above definitions of elements and methods are not limited to the specific structures, shapes or ways mentioned in the embodiments.

[0041] It should also be noted that this paper can provide examples of parameters containing specific values, but these parameters do not have to be exactly equal to the corresponding values, but can be approximately equal to the corresponding values within the acceptable error tolerance or design constraints. The direction language mentioned in the embodiments, such as "up", "down", "front", "back", "left", "right", "inside", "outside" and the like, is only the direction of the drawings, and is not used to limit the protection scope of the application.

[0042] The above description shows and describes the preferred embodiments of the present application. As mentioned earlier, it should be understood that the present application is not limited to the form disclosed herein, and should not be considered as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the application conceived herein by the above-mentioned teaching or related art or knowledge. The changes and modifications made by those skilled in the art without departing from the spirit and scope of the present application shall be within the scope of protection of the appended claims of the present application.

Claims

1. A tubular material of PBO fibres characterised in that, It comprises an outer layer (1) made of cross-woven PBO fiber layer, an inner layer (2) made of impact-resistant PBO fiber reinforced layer, and a middle layer (3) made of continuously-wound PBO fiber reinforced layer, and the outer layer (1), the inner layer (2) and the middle layer (3) are integrally formed into a hollow structure after impregnation with epoxy resin.

2. The PBO fibrous tubular material according to claim 1, characterized in that, The PBO fiber layer is made of biaxial weaving.

3. The PBO fibrous tubular material according to claim 2, characterized in that, The PBO fiber reinforced layer is made of multi-axial weaving.

4. An integrated handlebar for use with the tubular PBO fiber material of any one of claims 1-3, wherein, It comprises an integrated main rod (4), elbow section (5) and handle section (6) made of PBO fiber tubular material.

5. The unitary handle of claim 4, wherein, The PBO fiber layer is arranged in a staggered weaving structure at the positions of the main rod (4) and the elbow section (5), and the PBO fiber layer is arranged in a staggered weaving structure at the positions of the elbow section (5) and the handle section (6).

6. The unitary handle of claim 4, wherein, The handle section (6) is provided with a wear-resistant and anti-skid coating (9) on the outside.

7. An integrated seat rod applied to the PBO fiber tubular material as claimed in any one of claims 1 to 3, characterized in that, It comprises a middle tube section (7) and a seat connecting section (8) made of PBO fiber tubular material, the middle tube section (7) is used for connecting the frame, and the seat connecting section (8) is used for connecting the seat.

8. The integral seat bar of claim 7 wherein, The middle tube section (7) and the seat connecting section (8) of the seat rod are connected by a multi-layer composite structure composed of continuously-wound PBO fiber layer.

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