A carbon fiber spoke

Abstract

The utility model discloses a carbon fiber spoke, including spoke body, cap head and denture, cap head and denture all are provided with the through -hole of the spoke body plug -in fixed, and the both ends of spoke body are inserted into the denture and cap head and are fixed by viscose, and the both ends of spoke body are fixed with cap head and denture respectively, and the outside of spoke body is still equipped with reinforcing part, and the inner wall of both ends of reinforcing part is connected with the outer wall of cap head and denture and is fixed. The present application has the tensile strength of improving carbon fiber spoke, the protective effect of the outer surface of spoke body, improves the effect of weather resistance and anti -aging.

Description

Technical Field

[0001] This utility model relates to the field of bicycle spoke technology, and in particular to a carbon fiber spoke. Background Technology

[0002] Currently, carbon fiber spokes are made of carbon fiber as the core material and are used as supporting components to connect bicycle hubs and rims. They mainly consist of the spoke body with a carbon fiber core and metal parts installed at both ends of the spoke body - the spoke cap and the spoke tip.

[0003] In the prior art, in order to improve the connection strength between the spoke body and the tooth cap and the cap head, tapered joints are often formed at both ends of the spoke body, and matching tapered grooves are provided inside the tooth cap and the cap head. The tapering effect is used to improve the connection strength between the spoke body and the tooth cap and the cap head.

[0004] The applicant has conducted research and development to address the above problems by using an adhesive method for connection and fixation. However, during the tensile strength test, the connection node between the spoke body and the metal part broke, resulting in low tensile strength of the spokes. Therefore, improvement is needed. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a carbon fiber spoke that can improve the tensile strength of the carbon fiber spoke and protect the spoke body.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A carbon fiber spoke includes a spoke body, a cap, and a toothed cap. The two ends of the spoke body are respectively bonded and fixed to the cap and the toothed cap. A reinforcing member is also sleeved on the outside of the spoke body. The inner sidewalls of the two ends of the reinforcing member are respectively connected and fixed to the outer wall of the toothed cap and the cap.

[0008] By adopting the above technical solution and setting up reinforcement components, on the one hand, the reinforcement components can connect the cap and the tooth cap, further disperse the tensile force, and improve the tensile strength of the carbon fiber spokes; on the other hand, the reinforcement components can protect the connection nodes and reduce the breakage of the connection nodes.

[0009] In one possible implementation, the reinforcement is configured as a fully enclosed sleeve that wraps around the outside of the spoke body, and both ends of the reinforcement are respectively bonded and fixed to the cap and the tooth cap.

[0010] By adopting the above technical solution, the reinforcement wrapped around the outside of the spoke body can protect the surface of the spoke body while ensuring that the reinforcement improves the tensile strength of the spoke body, thereby reducing external wear on the spoke body and improving the weather resistance and anti-aging performance of the spoke body.

[0011] In one possible implementation, the reinforcement is configured as a semi-enclosed sleeve, the reinforcement comprising a pair of sleeves, both sleeves being fitted onto the outside of the connection node between the tooth cap and the head cap and the spoke body, the two sleeves being respectively used for the connection between the tooth cap and the spoke body and the head cap and the spoke body, the section of the outer wall of the tooth cap, the head cap and the spoke body connected to the reinforcement being coated with an adhesive layer, and the two reinforcements being respectively wrapped and bonded to the adhesive layer.

[0012] By adopting the above technical solution, under the premise of ensuring that the reinforcing component improves the tensile strength of the spoke body, the semi-enclosed structure can reduce the weight of the spokes and achieve lightweighting.

[0013] In one possible implementation, the reinforcement is a pre-formed sleeve made of carbon fiber or engineering plastic, with the inner walls of both ends of the sleeve bonded and fixed to the tooth cap and the outer wall of the cap head.

[0014] By adopting the above technical solution, high-strength materials such as carbon fiber or engineering plastics can be pre-formed into a sleeve shape, which is then fitted onto the spoke body and bonded and fixed by applying an adhesive layer.

[0015] In one possible implementation, the reinforcement is an injection-molded body, the inner wall of the reinforcement is wrapped and attached to the outer wall of the spoke body, and the two ends of the reinforcement are integrally injection-molded with the cap and the tooth cap, respectively.

[0016] By adopting the above technical solution, the reinforcing part can be formed by injection molding. The assembled components of the tooth cap and the cap head are positioned and placed in the injection molding mold, and the reinforcing part is formed by injection molding process to achieve the function of fitting, wrapping and connecting.

[0017] In one possible implementation, both the cap head and the outer wall section where the tooth cap connects to the reinforcement are provided with threaded grooves.

[0018] By adopting the above technical solution, the threaded groove is used to increase the surface roughness of the connection section between the cap and the toothed cap, thereby improving the connection strength between the reinforcing member and the cap and the toothed cap.

[0019] In one possible implementation, the tooth cap and the end of the cap facing each other are provided with a roller compression section.

[0020] By adopting the above technical solution, the setting of the roller compression section can improve the connection strength between the cap and the riveting and the spoke body through the tube shrinking process, thereby further improving the tensile strength of the spokes.

[0021] In one possible implementation, the reinforcement is provided as a heat-shrink tubing, which is heat-shrink wrapped around the outside of the spoke body.

[0022] By adopting the above technical solution and using the heat shrink tubing structure, although the effect on improving the tensile strength of the spokes is small, it can effectively protect the spoke body and the parts of the metal parts exposed to the outside world, reduce the wear of the spoke body from the outside world, and improve the weather resistance and anti-aging performance of the spoke body.

[0023] In one possible implementation, the reinforcement is provided with a color layer, which is either the color of the reinforcement body or a color applied to the surface of the reinforcement.

[0024] By adopting the above technical solution, the setting of the color layer can improve the single-color spoke body, enhance the aesthetics of the spokes, reduce the aesthetic fatigue of the spokes, and allow users to customize bicycle spokes according to their personalization, thus enhancing the fun of using the spokes.

[0025] Compared with existing technologies, the advantages of this utility model are:

[0026] 1. By setting reinforcement components, on the one hand, the reinforcement components can connect the cap and the tooth cap, which can further disperse the tensile force and improve the tensile strength of the carbon fiber spokes. On the other hand, the reinforcement components can protect the connection nodes and reduce the breakage of the connection nodes.

[0027] 2. The full-coverage structure, which wraps around the outside of the spoke body, protects the surface of the spoke body while ensuring that the reinforcement increases the tensile strength of the spoke body, reducing external wear and improving the weather resistance and anti-aging performance of the spoke body. The semi-coverage structure, while ensuring that the reinforcement increases the tensile strength of the spoke body, can reduce the weight of the spokes and achieve lightweighting. Attached Figure Description

[0028] Figure 1 This is an overall structural diagram of the carbon fiber spokes of Embodiment 1 of this application;

[0029] Figure 2 This is a cross-sectional schematic diagram of the carbon fiber spoke full-coverage sleeve preforming method of Embodiment 1 of this application;

[0030] Figure 3 for Figure 2 A magnified view of part A;

[0031] Figure 4 This is a partially enlarged schematic diagram of the injection molding method for the carbon fiber spoke full-coverage sleeve in Embodiment 1 of this application;

[0032] Figure 5 This is a cross-sectional schematic diagram of the carbon fiber spoke semi-enclosed injection molding method of Embodiment 2 of this application;

[0033] Figure 6 for Figure 5 A magnified view of part B;

[0034] Figure 7 This is a schematic diagram of the carbon fiber radial cross-section of Embodiment 3 of this application.

[0035] Explanation of the labels in the diagram:

[0036] 1. Spoke body; 2. Head; 3. Tooth cap; 4. Through hole; 5. Adhesive layer; 6. Reinforcing element; 7. Roller compression section; 8. Threaded groove. Detailed Implementation

[0037] This application discloses a carbon fiber spoke. The following is a description of the embodiment. Figure 1-2 This application will be described in further detail.

[0038] Example 1:

[0039] Reference Figures 1-4 The carbon fiber spoke includes a spoke body 1, a cap 2, and a toothed cap 3. Both the cap 2 and the toothed cap 3 are provided with through holes 4 for inserting and fixing the spoke body 1. Both ends of the spoke body 1 are inserted into the toothed cap 3 and the cap 2 and fixed by adhesive. Both ends of the spoke body 1 are respectively bonded and fixed to the cap 2 and the toothed cap 3. A reinforcing member 6 is also sleeved on the outside of the spoke body 1. The inner sidewalls of both ends of the reinforcing member 6 are respectively connected and fixed to the outer wall of the toothed cap 3 and the cap 2.

[0040] In this embodiment, the reinforcement 6 is set as a sleeve with a full-coverage structure. The reinforcement 6 wraps around the outside of the spoke body 1, and the two ends of the reinforcement 6 are respectively bonded and fixed to the cap 2 and the tooth cap 3.

[0041] In one embodiment, the reinforcement 6 is a pre-formed sleeve made of carbon fiber or engineering plastic, and the inner walls of both ends of the sleeve are bonded and fixed to the outer walls of the tooth cap 3 and the cap head 2. High-strength engineering plastics such as carbon fiber or PEEK can be pre-formed into a sleeve shape, which is then fitted onto the spoke body 1 and bonded and fixed by applying an adhesive layer 5.

[0042] In another embodiment, the reinforcement 6 is an injection-molded body. The inner wall of the reinforcement 6 wraps around and adheres to the outer wall of the spoke body 1, and both ends of the reinforcement 6 are integrally injection-molded with the cap 2 and the tooth cap 3, respectively. The reinforcement 6 can be formed by injection molding. The assembled components of the tooth cap 3 and the cap 2 are positioned in the injection molding mold, and the reinforcement 6 is formed by injection molding to achieve the function of fitting, wrapping and connecting.

[0043] Furthermore, the outer wall of the cap 2 and the toothed cap 3 connected to the reinforcing member 6 is provided with threaded grooves 8. The threaded grooves 8 can improve the connection strength between the reinforcing member 6, the toothed cap 3, and the cap 2.

[0044] Furthermore, the tooth cap 3 and the head cap 2 are provided with a roller compression section 7 at their opposite ends. The roller compression section 7 can improve the connection strength between the head cap 2 and the riveting and the spoke body 1 through the tube shrinking process, thereby further improving the tensile strength of the spoke.

[0045] The implementation principle of Example 1 is as follows: the tooth cap 3 and the cap head 2 are bonded and fixed to the spoke body 1, and the reinforcing member 6 is bonded and fixed to the spoke body 1.

[0046] Example 2:

[0047] Reference Figures 5-6 The difference from Embodiment 1 is that the reinforcement 6 is set as a semi-enclosed sleeve. The reinforcement 6 includes a pair of sleeves. Both sleeves are sleeved to the outside of the connection node between the tooth cap 3 and the head cap 2 and the spoke body 1. The two sleeves are used to connect the tooth cap 3 and the spoke body 1 and the head cap 2 and the spoke body 1, respectively. The section where the outer wall of the tooth cap 3, the head cap 2 and the spoke body 1 is connected to the reinforcement 6 is coated with an adhesive layer 5. The two reinforcements 6 are respectively wrapped and bonded to the adhesive layer 5.

[0048] The implementation principle of Example 2 is as follows: the difference from Example 1 is that the reinforcing member 6 is set as two pieces, and its molding method is the same as that of Example 1.

[0049] Example 3:

[0050] Reference Figure 7 The difference from Embodiment 1 is that the reinforcement 6 is a heat-shrink tubing, which is heat-shrink wrapped around the outside of the spoke body 1. The reinforcement 6 is provided with a color layer, which is either the color of the reinforcement 6 body or the color applied to the surface of the reinforcement 6.

[0051] The implementation principle of Example 3 is as follows: the difference from Example 1 is that after the heat shrink tubing is put onto the spokes, it is heat-shrinked and wrapped to the outer surface of the spokes by baking with high temperature hot air.

[0052] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A carbon fiber spoke, characterized in that, It includes a spoke body (1), a cap (2) and a tooth cap (3). The two ends of the spoke body (1) are respectively bonded and fixed to the cap (2) and the tooth cap (3). A reinforcing member (6) is also sleeved on the outside of the spoke body (1). The inner sidewalls of the two ends of the reinforcing member (6) are respectively connected and fixed to the outer wall of the tooth cap (3) and the cap (2).

2. The carbon fiber spoke according to claim 1, characterized in that, The reinforcing member (6) is configured as a sleeve with a full-coverage structure. The reinforcing member (6) wraps around the outside of the spoke body (1), and the two ends of the reinforcing member (6) are respectively bonded and fixed to the cap (2) and the tooth cap (3).

3. A carbon fiber spoke according to claim 1, characterized in that, The reinforcing member (6) is configured as a semi-enclosed sleeve. The reinforcing member (6) includes a pair of sleeves. Both sleeves are sleeved to the outside of the connection node between the tooth cap (3) and the head cap (2) and the spoke body (1). The two sleeves are used to connect the tooth cap (3) and the spoke body (1) and the head cap (2) and the spoke body (1), respectively. The section of the outer wall of the tooth cap (3), the head cap (2) and the spoke body (1) connected to the reinforcing member (6) is coated with an adhesive layer (5). The two reinforcing members (6) are respectively wrapped and bonded to the adhesive layer (5).

4. A carbon fiber spoke according to any one of claims 2 or 3, characterized in that, The reinforcing member (6) is a pre-formed sleeve made of carbon fiber or engineering plastic, and the inner walls of both ends of the sleeve are bonded and fixed to the outer walls of the tooth cap (3) and the cap head (2).

5. A carbon fiber spoke according to any one of claims 2 or 3, characterized in that, The reinforcing member (6) is an injection molded body formed by injection molding. The inner wall of the reinforcing member (6) is wrapped and attached to the outer wall of the spoke body (1), and the two ends of the reinforcing member (6) are integrally injection molded with the cap (2) and the tooth cap (3).

6. A carbon fiber spoke according to claim 1, characterized in that, The outer wall of the cap (2) and the tooth cap (3) connected to the reinforcement (6) are both provided with threaded grooves (8).

7. A carbon fiber spoke according to claim 1, characterized in that, The tooth cap (3) and the cap head (2) are provided with roller compression section (7) at the opposite ends.

8. A carbon fiber spoke according to claim 1, characterized in that, The reinforcing member (6) is configured as a heat shrink tubing, which is wrapped around the outside of the spoke body (1) by heat shrinking.

9. A carbon fiber spoke according to claim 8, characterized in that, The reinforcing member (6) is provided with a color layer, which is either the color of the body of the reinforcing member (6) or the color applied to the surface of the reinforcing member (6).

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