Low-wind-resistance light-weight spoke

Abstract

The low-wind-resistance light-weight spoke comprises a spoke rod body, the lower end of the spoke rod body is provided with an elbow part, the upper end of the spoke rod body is in threaded connection with a spoke cap, and the middle section of the spoke rod body is provided with a main rod part; the two ends of the main rod part are wrapped with the first carbon fiber reinforcing parts, and the middles of the first carbon fiber reinforcing parts are provided with taper angles extending inwards; the second carbon fiber reinforcing parts wrap the center of the main rod part and are arranged at intervals, and taper angles extending inwards are arranged at the upper ends and the lower ends of the second carbon fiber reinforcing parts correspondingly; the blade groove parts are cut in the main rod part, face the front side of the wheel, are located between the first carbon fiber reinforcing parts and the second carbon fiber reinforcing parts and between the multiple second carbon fiber reinforcing parts, and are provided with cutting edges connected with the adjacent taper angles. The main rod part of the spoke rod body is provided with the multiple sections of carbon fiber reinforcing parts, the strength is improved, the weight is reduced, meanwhile, the cutting edge groove parts are arranged between the main rod part and the carbon fiber reinforcing parts to form a triangular prism shape, wind guiding is facilitated, wind resistance is reduced, and the trouble that a conventional rod-shaped spoke is poor in performance is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of spokes, and in particular relates to a low wind resistance and lightweight spoke. Background Art

[0002] Spokes are many rods, bars or straight lines extending outward from a center or hub on the same plane. Currently, spokes are mostly alloy steel parts, which can no longer meet the production requirements of low wind resistance and lightweight on some high-end bicycles. Some manufacturers have introduced carbon fiber spokes, but spokes made of all carbon fiber are too expensive and do not significantly reduce wind resistance.

[0003] Therefore, there is an urgent need for a new structure that has sufficient strength, can greatly reduce wind resistance, and has a lightweight spoke structure. Utility Model Content

[0004] In view of this, the technical problem to be solved by the utility model is to provide a low wind resistance and lightweight spoke, by arranging multiple sections of carbon fiber reinforcement parts on the main rod part of the spoke rod body to improve the strength and reduce the weight, and at the same time cutting edge grooves between them to form a triangular shape, which is convenient for guiding wind, reducing wind resistance, and avoiding the trouble of weak performance of conventional rod-shaped spokes.

[0005] In order to solve the above technical problems, the utility model discloses a low wind resistance lightweight spoke, which comprises a spoke rod body, an elbow portion is arranged at the lower end of the spoke rod body, a spoke cap is threadedly connected at the upper end, and a main rod portion is arranged in the middle section;

[0006] A first carbon fiber reinforcement portion covering both ends of the main rod portion, wherein the middle of the first carbon fiber reinforcement portion has a cone angle extending inwards;

[0007] A plurality of second carbon fiber reinforcement parts are wrapped around the center of the main rod part and spaced apart from each other, and the upper and lower ends of the second carbon fiber reinforcement parts are respectively provided with inwardly extending cone angles;

[0008] A blade groove portion is cut on the main rod portion and faces the front side of the wheel. The blade groove portion is located between the first carbon fiber reinforcement portion and the second carbon fiber reinforcement portion, and between multiple second carbon fiber reinforcement portions. The blade groove portion has a cutting edge connecting adjacent cone angles.

[0009] According to an embodiment of the utility model, the first carbon fiber reinforcement portion is inclined inwardly from the rear to the taper angle direction, and the second carbon fiber reinforcement portion is inclined inwardly from the middle to the two ends of the taper angle direction.

[0010] According to an embodiment of the present invention, the cone angle is 60°.

[0011] According to an embodiment of the present invention, the outer diameters of the first carbon fiber reinforcement portion and the second carbon fiber reinforcement portion are not greater than the outer diameter of the spoke rod.

[0012] According to one embodiment of the utility model, the blade groove is in a triangular shape.

[0013] Compared with the prior art, the utility model can obtain the following technical effects:

[0014] The main rod of the spoke body is provided with multiple sections of carbon fiber reinforcement to increase strength and reduce weight. At the same time, cutting edge grooves are cut between them to form a triangular shape, which is convenient for guiding wind and reducing wind resistance, thus avoiding the trouble of weak performance of conventional rod-shaped spokes.

[0015] 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

[0016] 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:

[0017] Figure 1 It is a schematic diagram of a low wind resistance lightweight spoke according to an embodiment of the utility model.

[0018] Figure ID

[0019] The spoke rod body 10 , the elbow portion 11 , the spoke nipple 12 , the main rod portion 20 , the first carbon fiber reinforcement portion 21 , the second carbon fiber reinforcement portion 22 , the blade groove portion 30 , and the cutting edge 31 . DETAILED DESCRIPTION

[0020] 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.

[0021] Please refer to Figure 1 , Figure 1 It is a schematic diagram of a low wind resistance lightweight spoke according to an embodiment of the utility model.

[0022] As shown in the figure, a low wind resistance lightweight spoke includes a spoke rod body 10, a bend portion 11 is arranged at the lower end of the spoke rod body 10, a spoke cap 12 is threadedly connected to the upper end, and a main rod portion 20 is arranged in the middle; a first carbon fiber reinforcement portion 21 is coated on both ends of the main rod portion 20, and the middle of the first carbon fiber reinforcement portion 21 has a cone angle extending inward; a plurality of second carbon fiber reinforcement portions 22 are coated on the center of the main rod portion 20 and spaced apart, and the upper and lower ends of the second carbon fiber reinforcement portion 22 are respectively provided with cone angles extending inward; a blade groove portion 30 cut on the main rod portion 20 and facing the front side of the wheel, the blade groove portion 30 is located between the first carbon fiber reinforcement portion 21 and the second carbon fiber reinforcement portion 22, and between the plurality of second carbon fiber reinforcement portions 22, and the blade groove portion 30 has a cutting edge 31 connecting adjacent cone angles.

[0023] In one embodiment of the utility model, an elbow 11 is provided at the lower end of the spoke rod 10 for fixing to the wheel hub, and an external thread is provided at the upper end, which is fixed to the wheel rim through the spoke cap 12 to form a support as a whole. The main rod 20 is located in the middle section of the spoke rod 10, and is coated with a first carbon fiber reinforcement 21 at the upper and lower ends and a multi-section second carbon fiber reinforcement 22 in the middle through infusion molding, wherein the upper and lower outer ends of the first carbon fiber reinforcement 21 are planes, and the inner side extends to the second carbon fiber reinforcement 22 through a cone angle, and the second carbon fiber reinforcement 22 is equivalent to two first carbon fiber reinforcements 21 connected, and the upper and lower parts are provided with corresponding cone angles, and the carbon fiber reinforcement is increased to improve the strength.

[0024] The blade groove 30 is formed by cutting between each adjacent carbon fiber reinforcement part. The blade groove 30 is symmetrical and faces the front of the wheel to reduce wind resistance. Specifically, the cutting edge 31 connects the cone angles of each carbon fiber reinforcement part, which can cut the opposite wind to the left and right in the center, thereby reducing air resistance and improving portability. At the same time, the carbon fiber reinforcement part is set at its end, which can effectively enhance the support strength of the main rod part 20 after cutting. In addition, the blade groove 30 is triangular, with good flow conductivity and low wind resistance.

[0025] The first carbon fiber reinforcement part 21 of the utility model is inclined inward from the rearward cone angle direction, and the second carbon fiber reinforcement part 22 is inclined inward from the middle to the two ends of the cone angle direction, that is, a downward inclination angle facing the blade groove part 30 is formed to improve the diversion effect.

[0026] Preferably, the cone angle is 60°, which is uniform and has good guiding properties.

[0027] It is worth mentioning that the outer diameters of the first carbon fiber reinforcement part 21 and the second carbon fiber reinforcement part 22 are not greater than the outer diameter of the spoke rod body 10 . Preferably, the joints thereof can be set to be flush with each other, which has high smoothness.

[0028] In summary, the utility model increases the strength and reduces the weight by arranging multiple sections of carbon fiber reinforcement parts on the main rod part of the spoke rod body, and at the same time cuts the edge groove parts therebetween to form a triangular shape, which is convenient for guiding wind and reducing wind resistance, thus avoiding the trouble of the weak performance of conventional rod-shaped spokes.

[0029] 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 low wind resistance lightweight spoke, characterized in that: include: A spoke rod body, wherein an elbow portion is arranged at the lower end of the spoke rod body, a spoke cap is threadedly connected to the upper end, and a main rod portion is arranged in the middle section; A first carbon fiber reinforcement portion covering both ends of the main rod portion, wherein the first carbon fiber reinforcement portion has a cone angle extending inward in the middle; A plurality of second carbon fiber reinforcement parts are wrapped around the center of the main rod part and spaced apart from each other, wherein the second carbon fiber reinforcement parts are respectively provided with inwardly extending cone angles at the upper and lower ends; A blade groove portion is cut on the main rod portion and faces the front side of the wheel, the blade groove portion is located between the first carbon fiber reinforcement portion and the second carbon fiber reinforcement portion, and between multiple second carbon fiber reinforcement portions, and the blade groove portion has a cutting edge connecting adjacent cone angles.

2. The low wind resistance lightweight spoke according to claim 1, characterized in that: The first carbon fiber reinforcement part is inclined inwardly from the rear to the direction of the cone angle, and the second carbon fiber reinforcement part is inclined inwardly from the middle to the two ends in the direction of the cone angle.

3. The low wind resistance lightweight spoke according to claim 1, characterized in that: The cone angle is 60°.

4. The low wind resistance lightweight spoke according to claim 1, characterized in that: The outer diameters of the first carbon fiber reinforcement portion and the second carbon fiber reinforcement portion are not greater than the outer diameter of the spoke rod.

5. The low wind resistance lightweight spoke according to claim 1, characterized in that: The blade groove is in a triangular shape.

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