A lightweight high-strength carbon fiber wheel rim

Abstract

The utility model discloses a kind of high-strength carbon fiber wheel rim of light weight, relate to wheel rim technical field, this kind of high-strength carbon fiber wheel rim of light weight, by being folded symmetrically with first patch and second patch being X-shaped in two first side wall parts two sides, the first patch and second patch of each first side wall part are V-shaped, again cooperate adjacent V-shaped patch unit, so that each first side wall part has several X-shaped patches, and the rim body side wall is reinforced, on the basis of the amount of yarn used in the production of a rim body, the amount of yarn is reduced to use close to half, that is, the strength of rim body can be guaranteed, and a large number of yarn can be reduced, material cost is greatly saved, so that rim body reaches the advantages of light weight and high strength.

Description

Technical Field

[0001] This utility model relates to the field of carbon fiber wheel technology, and in particular to a lightweight and high-strength carbon fiber wheel. Background Technology

[0002] As people's living standards improve, the demand for high-end bicycles is increasing, and cycling is becoming more and more popular. People are starting to pursue lighter riding tools. Due to its lightness and strength, carbon fiber composite materials are very suitable for manufacturing lightweight bicycles. At present, the trend of "carbon fiberization" in high-end bicycles is becoming more and more obvious.

[0003] In the manufacturing process of wheel rims, composite materials are difficult to process at the arc transitions and irregular joints. It is necessary to add fiber yarn to meet the requirements of shape and strength. In particular, at the side wall and spoke connection of the wheel rim, in order to improve strength and aesthetics, yarn is used. The existing yarn patching method usually involves laying multiple layers of vertical strips of yarn. Although the strength is improved, it not only increases the amount of composite material used and increases the material cost, but also makes the wheel rim relatively heavy. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a lightweight and high-strength carbon fiber wheel rim to solve the problem that the existing patching method usually involves laying multiple layers of vertical strips of yarn, which increases the strength but also increases the amount of composite material used, increases the material cost, and the wheel rim is still relatively heavy.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a lightweight and high-strength carbon fiber wheel rim, comprising a wheel rim body, wherein the wheel rim body includes: The inner patch layer includes a first tire connection portion, a first spoke connection portion, and two first sidewall portions; An outer patch layer, located outside the inner patch layer, includes a second tire connection portion, a second spoke connection portion, and two second sidewall portions; An intermediate patch layer is located between the inner patch layer and the outer patch layer. The intermediate patch layer includes several patch units. Each patch unit includes a first patch and a second patch that are bonded together in an X-shape. The patch units are folded and symmetrically disposed on both sides of two first sidewall portions. The first patch and the second patch of each patch unit are bonded together in an X-shape with the first patch or the second patch of two adjacent patch units and have a first intersection. The first intersection is located between the first sidewall portion and the second sidewall portion.

[0006] Preferably, the first patch and the second patch have a second intersection, which is located between the first spoke connection and the second spoke connection. A third intersection is also formed between the two patch units, which is located between the first tire connection and the second tire connection.

[0007] Preferably, the patch unit further includes a third patch, which is directly opposite the second intersection and the third intersection.

[0008] Preferably, the included angle between the first patch and the second patch is 120°-130°.

[0009] Preferably, the lengths of the first patch and the second patch are 100mm-300mm.

[0010] Preferably, the length of the third patch is 50mm-300mm.

[0011] Preferably, the inner patch layer, outer patch layer, and intermediate patch layer are all made of carbon fiber.

[0012] Preferably, the wheel rim body is hollow inside.

[0013] Compared with the prior art, the beneficial effects that this utility model can achieve are: This invention symmetrically arranges X-shaped first and second patches on both sides of two first sidewalls. Each first sidewall has a V-shaped first and second patch, which, together with adjacent V-shaped patch units, reinforces the sidewall of the wheel rim body with several X-shaped patches. This reduces the amount of yarn used in producing a single wheel rim body by nearly half, ensuring the strength of the wheel rim body while significantly reducing the amount of yarn used, thus greatly saving material costs and achieving the advantages of lightweight and high strength in the wheel rim body. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of the wheel rim of this utility model; Figure 2 This utility model Figure 1 Cross-sectional structural diagram; Figure 3 This is a schematic diagram of the inner patch layer, patch unit, and outer patch layer structure of this utility model; Figure 4 This is a schematic diagram of the structure of the patch unit of this utility model when it is attached to the inner patch layer; Figure 5 This is a schematic diagram of the structure of the present invention when a single patch unit is disposed on a first sidewall portion of the inner patch layer; Figure 6This is a schematic diagram of the structure of the present invention when multiple patch units are disposed in a first sidewall portion and a first tire connection portion of an inner patch layer; The components are: 1. Wheel rim body; 11. Inner patch layer; 12. Patch unit; 121. First patch; 122. Second patch; 123. Third patch; 13. Outer patch layer. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model is further described below in conjunction with specific embodiments. However, the following embodiments are only preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of this utility model.

[0016] like Figures 1-6 As shown, this utility model provides a lightweight and high-strength carbon fiber wheel rim, including a wheel rim body 1, the wheel rim body 1 being hollow inside, and the wheel rim body 1 including an inner patch layer 11, an outer patch layer 13 and a middle patch layer; The inner patch layer 11 includes a first tire connection portion, a first spoke connection portion and two first sidewall portions, with each first sidewall portion having its two ends connected to one end of the first tire connection portion and one end of the first spoke connection portion, respectively. The outer patch layer 13 is located outside the inner patch layer 11. The outer patch layer 13 includes a second tire connection portion, a second spoke connection portion, and two second sidewall portions. Each second sidewall portion is connected to one end of the second tire connection portion and the second spoke connection portion at both ends. The intermediate patch layer is located between the inner patch layer 11 and the outer patch layer 13. The intermediate patch layer includes a plurality of patch units 12. Each patch unit 12 includes a first patch 121 and a second patch 122 that are bonded together in an X-shape. The patch units 12 are folded and symmetrically disposed on both sides of the two first sidewall portions. The first patch 121 and the second patch 122 of each patch unit 12 are bonded together in an X-shape with the first patch 121 or the second patch 122 of two adjacent patch units 12 and have a first intersection. The first intersection is located between the first sidewall portion and the second sidewall portion. The inner patch layer 11, the outer patch layer 13 and the middle patch layer are all made of carbon fiber, specifically carbon fiber yarn. By folding the X-shaped first patch 121 and second patch 122 symmetrically on both sides of the two first sidewall portions, and making the first patch 121 and second patch 122 of each first sidewall portion V-shaped, and cooperating with the adjacent V-shaped patch unit 12, each first sidewall portion has several X-shaped patches to reinforce the sidewall of the wheel rim body 1. Based on the amount of yarn required to produce one wheel rim body 1, the amount of yarn used is reduced by nearly half. This ensures the strength of the wheel rim body 1 while reducing a large amount of yarn, greatly saving material costs and enabling the wheel rim body 1 to achieve the advantages of being lightweight and high-strength.

[0017] like Figure 4 , Figure 5 and Figure 6 As shown, the first patch 121 and the second patch 122 have a second intersection, thereby providing single-point reinforcement at the spoke mounting location. The second intersection is located between the first spoke connection and the second spoke connection. A third intersection is also formed between the two patch units 12 (e.g., Figure 6 As shown, the first patch 121 / second patch 122 of a patch unit 12 is bonded to the second patch 122 / first patch 121 of the second adjacent patch unit 12 (crossing over each other), and the third intersection is located between the first tire connection part and the second tire connection part, thereby further reinforcing the tire mounting point.

[0018] like Figure 4 , Figure 5 and Figure 6 As shown, the patch unit 12 also includes a third patch 123, which is directly opposite the second intersection and the third intersection; The third patch 123, which is configured in this way, wraps around the outer periphery of the first sidewall portion and is located between the first tire connection portion and the second tire connection portion, as well as between the first spoke connection portion and the second spoke connection portion, thereby jointly reinforcing the spoke connection portion, the tire connection portion, and the sidewall of the wheel rim body 1, making the tensile strength of the wheel rim body 1 higher and further improving the overall strength of the wheel rim body 1.

[0019] like Figure 4 , Figure 5 and Figure 6 As shown, the included angle between the first patch 121 and the second patch 122 is 120°-130°, which optimizes the force distribution at the spoke hole position, avoids damage to the spokes, provides a certain degree of protection, and greatly improves the overall strength of the wheel rim.

[0020] like Figure 4 , Figure 5 and Figure 6 As shown, the lengths of the first patch 121 and the second patch 122 are 100mm-300mm, and the specific length can be selected according to the width of the wheel.

[0021] like Figure 4 , Figure 5 and Figure 6 As shown, the length of the third patch 123 is 50mm-300mm, and the specific length can be selected according to the width of the wheel.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lightweight and high-strength carbon fiber wheel rim, comprising a wheel rim body (1), characterized in that: The wheel rim body (1) includes: The inner patch layer (11) includes a first tire connection portion, a first spoke connection portion and two first sidewall portions; The outer patch layer (13) is located outside the inner patch layer (11), and the outer patch layer (13) includes a second tire connection part, a second spoke connection part and two second sidewall parts; An intermediate patch layer is located between the inner patch layer (11) and the outer patch layer (13). The intermediate patch layer includes a plurality of patch units (12). Each patch unit (12) includes a first patch (121) and a second patch (122) that are bonded together in an X-shape. The patch units (12) are folded and symmetrically disposed on both sides of two first sidewall portions. The first patch (121) and the second patch (122) of each patch unit (12) are bonded together in an X-shape with the first patch (121) or the second patch (122) of two adjacent patch units (12) and have a first intersection. The first intersection is located between the first sidewall portion and the second sidewall portion.

2. The lightweight, high-strength carbon fiber wheel rim according to claim 1, characterized in that: The first patch (121) and the second patch (122) have a second intersection, which is located between the first spoke connection and the second spoke connection. A third intersection is also formed between the two patch units (12), which is located between the first tire connection and the second tire connection.

3. The lightweight, high-strength carbon fiber wheel rim according to claim 2, characterized in that: The patch unit (12) further includes a third patch (123) which is directly opposite the second intersection and the third intersection.

4. The lightweight, high-strength carbon fiber wheel rim according to claim 3, characterized in that: The included angle between the first patch (121) and the second patch (122) is 120°-130°.

5. The lightweight, high-strength carbon fiber wheel rim according to claim 3, characterized in that: The lengths of the first patch (121) and the second patch (122) are 100mm-300mm.

6. The lightweight, high-strength carbon fiber wheel rim according to claim 3, characterized in that: The length of the third patch (123) is 50mm-300mm.

7. The lightweight, high-strength carbon fiber wheel rim according to claim 1, characterized in that: The inner patch layer (11), outer patch layer (13) and intermediate patch layer are all made of carbon fiber.

8. The lightweight, high-strength carbon fiber wheel rim according to claim 1, characterized in that: The wheel rim body (1) is hollow inside.

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