High-strength carbon fiber spoke

Abstract

The high-strength carbon fiber spoke comprises a carbon fiber middle rod body, a threaded part is arranged at the lower end of the carbon fiber middle rod body, a shaft sleeve part with the increased shaft diameter is arranged at the upper end of the carbon fiber middle rod body, a positioning taper hole is formed in the middle of the shaft sleeve part, and a groove part is arranged on the inner wall of the positioning taper hole. The spoke cap is in threaded connection with the lower end of the carbon fiber middle rod body; the elbow rod is fixed in the positioning taper hole and provided with a taper head part embedded into the positioning taper hole and an elbow part located at the other end, a glass fiber fabric layer is laid on the surface of the taper head part, and the taper head part is connected with the positioning taper hole through glue; and the rubber sleeve is coated between the lower end of the elbow rod and the shaft sleeve part. The carbon fiber middle rod body is arranged, one end of the carbon fiber middle rod body is connected with the spoke cap and fixed to the rim, the other end of the carbon fiber middle rod body is connected with the elbow rod through the shaft sleeve part and fixed to the hub, spoke assembly is completed, meanwhile, the taper hole is matched with the groove part, the glass fiber fabric layer is added for gluing, the connection strength is enhanced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of spokes, and in particular relates to a high-strength carbon fiber spoke. Background Art

[0002] One end of the spoke is connected to the wheel rim, and the other end is connected to the hub. Traditional spokes are generally made of stainless steel, with one end bent to hook on the wheel rim, and the other end bent to hook on the hub. Made of stainless steel, it is heavy, costly, and has low production efficiency. In response to the above shortcomings, some people have proposed solutions:

[0003] For example, CN205273028U, a carbon fiber spoke, includes a spoke body, one end of the spoke body is connected to a first accessory that can be matched with a wheel rim, and the other end is connected to a second accessory that can be matched with a hub, and the spoke body is made of carbon fiber. The connection between the end of the spoke body and the accessory adopts a simple hole matching and then bonding, and the matching parts of the two are relatively uniform. Therefore, during use, it is easy to be affected by external factors such as vibration, which weakens the matching strength of the two, making the accessory easy to be pulled away from the spoke body, resulting in the separation of the two, short service life, poor stability, and low strength.

[0004] Therefore, there is an urgent need for a carbon fiber spoke structure that is simple in design, easy to assemble, and has sufficient connection strength. Utility Model Content

[0005] In view of this, the technical problem to be solved by the utility model is to provide a high-strength carbon fiber spoke. By setting a carbon fiber intermediate rod body, one end is connected to the spoke cap and fixed to the rim, and the other end is connected to the elbow rod and fixed to the hub through the sleeve part to complete the spoke assembly. At the same time, the tapered hole is matched with the groove part, and a glass fiber fabric layer is added to enhance the connection strength and improve the service life.

[0006] In order to solve the above technical problems, the utility model discloses a high-strength carbon fiber spoke, which includes a carbon fiber intermediate rod body, a threaded portion is arranged at the lower end of the carbon fiber intermediate rod body, a shaft sleeve portion with an increased shaft diameter is arranged at the upper end, a positioning cone hole is arranged in the middle of the shaft sleeve portion, and a groove portion is arranged on the inner wall of the positioning cone hole;

[0007] A spoke nipple threadedly connected to the lower end of the carbon fiber intermediate rod body;

[0008] An elbow rod fixed in the positioning cone hole, the elbow rod having a cone head embedded in the positioning cone hole and an elbow head at the other end, a glass fiber fabric layer is laid on the surface of the cone head, and the cone head and the positioning cone hole are connected by glue;

[0009] A rubber sleeve is wrapped between the lower end of the elbow rod and the shaft sleeve.

[0010] According to an embodiment of the present invention, the groove is outwardly expanded and has a depth of 1-1.5 mm.

[0011] According to an embodiment of the utility model, the rubber sleeve is bonded to the elbow rod and the shaft sleeve portion by epoxy sealing glue.

[0012] According to an embodiment of the utility model, the elbow rod is made of stainless steel, and the end of the elbow portion is configured as a round handle-shaped pier.

[0013] According to an embodiment of the utility model, the depth of the positioning tapered hole is 1 / 2-2 / 3 of the tapered sleeve.

[0014] Compared with the prior art, the utility model can obtain the following technical effects:

[0015] By setting a carbon fiber intermediate rod body, one end is connected to the spoke cap and fixed to the rim, and the other end is connected to the elbow rod through the sleeve part and fixed to the hub to complete the spoke assembly. At the same time, the tapered hole is matched with the groove part, and a glass fiber fabric layer is added to enhance the connection strength and improve the service life.

[0016] Of course, any product implementing the present utility model does not necessarily need to achieve all of the above-mentioned technical effects at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 Schematic diagram of high-strength carbon fiber spokes according to an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the cooperation of the cone head of an embodiment of the utility model.

[0020] Figure ID

[0021] A carbon fiber intermediate rod body 10 , a shaft sleeve portion 11 , a positioning cone hole 20 , a groove portion 21 , a spoke cap 30 , an elbow rod 40 , a cone head portion 41 , and an elbow portion 42 . DETAILED DESCRIPTION

[0022] The following will describe the implementation methods of the present invention in detail with reference to the accompanying drawings and embodiments, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0023] Please refer to Figure 1 and Figure 2, Figure 1 Schematic diagram of high-strength carbon fiber spokes according to an embodiment of the utility model; Figure 2 It is a schematic diagram of the cooperation of the cone head of an embodiment of the utility model.

[0024] As shown in the figure, a high-strength carbon fiber spoke includes a carbon fiber intermediate rod body 10, a threaded portion is arranged at the lower end of the carbon fiber intermediate rod body 10, a shaft sleeve portion 11 with an increased shaft diameter is arranged at the upper end, a positioning cone hole 20 is arranged in the middle of the shaft sleeve portion 11, and a groove portion 21 is arranged on the inner wall of the positioning cone hole 20; a spoke cap 30 threadedly connected to the lower end of the carbon fiber intermediate rod body 10; an elbow rod 40 fixed in the positioning cone hole 20, the elbow rod 40 has a cone head portion 41 embedded in the positioning cone hole 20 and an elbow portion 42 located at the other end, a glass fiber fabric layer is laid on the surface of the cone head portion 41, and the cone head portion 41 and the positioning cone hole 20 are connected by glue; a rubber sleeve covering between the lower end of the elbow rod 40 and the shaft sleeve portion 11.

[0025] In one embodiment of the utility model, the carbon fiber intermediate rod body 10 is made of carbon fiber, has high strength and durability, and an external thread is arranged at its lower end for connecting the spoke nipple and fixing it to the rim, while a shaft sleeve portion 11 with a larger shaft diameter is formed at the upper end, and a positioning tapered hole 20 is arranged inside for matching with an elbow rod 40 made of stainless steel, thereby fixing it to the wheel hub.

[0026] Specifically, the elbow rod 40 is divided into a cone head portion 41 and an elbow portion 42. The cone head portion 41 is embedded in the positioning cone hole 20, and a layer of glass fiber fabric is provided on the surface of the cone head portion 41, which is used to improve the adhesion strength after being glued and fixed to the positioning cone hole 20, and the two can be fastened by stamping. In addition, the positioning cone hole 20 is also provided with a groove portion 21, so as to form a reserved gap between the positioning cone hole 20 and the cone head portion 41 with matching cone surfaces, which are spaced apart, equivalent to forming two cone surfaces in contact, which can be pressed down during tightening to strengthen positioning. And when the rim vibrates at high speed, it can ensure a sufficiently strong preload force, and it is not easy to deviate, causing the elbow rod 40 and the carbon fiber intermediate rod body 10 to be misaligned, which greatly improves stability and high strength.

[0027] Preferably, the groove portion 21 is outwardly expanded and has a depth of 1-1.5 mm, which is highly practical and has good stability.

[0028] The rubber sleeve covers between the lower end of the elbow rod 40 and the shaft sleeve portion 11, and the elbow rod 40 and the shaft sleeve portion 11 are bonded by epoxy sealant to form a seal to prevent water vapor erosion.

[0029] The end of the elbow portion 42 of the present invention is configured as a round handle-shaped butt head, which is convenient for fixing to the wheel hub.

[0030] In addition, the depth of the positioning cone hole 20 is 1 / 2-2 / 3 of the cone sleeve portion 41, which ensures the connection stroke length between the elbow rod 40 and the carbon fiber intermediate rod body 10 and enhances stability.

[0031] In summary, the utility model completes the spoke assembly by setting a carbon fiber intermediate rod body 10, one end of which is connected to the spoke cap 30 and fixed to the rim, and the other end is connected to the elbow rod 40 and fixed to the hub through the shaft sleeve part 20. At the same time, the tapered hole is matched with the groove part, and a glass fiber fabric layer is added to enhance the connection strength and improve the service life.

[0032] The above description shows and describes several preferred embodiments of the utility model, but as mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A high-strength carbon fiber spoke, characterized in that: include: A carbon fiber intermediate rod body, wherein a threaded portion is arranged at the lower end of the carbon fiber intermediate rod body, a shaft sleeve portion with an increased shaft diameter is arranged at the upper end, a positioning cone hole is arranged in the middle of the shaft sleeve portion, and a groove portion is arranged on the inner wall of the positioning cone hole; A spoke nipple threadedly connected to the lower end of the carbon fiber intermediate rod body; An elbow rod fixed in the positioning cone hole, the elbow rod having a cone head portion embedded in the positioning cone hole and an elbow portion at the other end, a glass fiber fabric layer being laid on the surface of the cone head portion, and the cone head portion and the positioning cone hole being connected by glue; A rubber sleeve is covered between the lower end of the elbow rod and the shaft sleeve portion.

2. The high-strength carbon fiber spoke according to claim 1, characterized in that: The groove portion is outwardly expanded and has a depth of 1-1.5 mm.

3. The high-strength carbon fiber spoke according to claim 1, characterized in that: The rubber sleeve is bonded to the elbow rod and the shaft sleeve part by epoxy sealing glue.

4. The high-strength carbon fiber spoke according to claim 1, characterized in that: The elbow rod is made of stainless steel, and the end of the elbow portion is configured as a round handle-shaped pier.

5. The high-strength carbon fiber spoke according to claim 1, characterized in that: The depth of the positioning cone hole is 1 / 2-2 / 3 of the cone head.

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