Hub structure for mounting carbon fiber spokes

Abstract

The utility model provides a hub structure for installing carbon fiber spokes, which relates to the technical field of bicycles, and comprises a hub main body, a first assembly part and a second assembly part are respectively arranged at two ends of the hub main body along the circumferential direction in an array manner, each assembly part is provided with two assembly holes in opposite directions, and the first assembly part and the second assembly part are respectively provided with a plurality of carbon fiber spokes. The assembly hole is provided with a limiting section and a communicating section, the limiting section is used for being matched with the head portion of the cap head, the communicating section is used for being matched with the body portion of the cap head, the hole diameter of the communicating section is smaller than that of the limiting section, and flat grooves allowing spokes to penetrate through are formed in the inner wall of the communicating section in a concave mode. Therefore, the problems that an existing hub used for assembling the carbon fiber spokes is low in universality and large in weight are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bicycle technical field, specifically, a kind of hub structure for installing carbon fiber spoke. BACKGROUND

[0002] Carbon fiber material has the characteristics of high strength, high modulus, low weight, etc., therefore more and more bicycles adopt carbon fiber spoke, to realize the lightweight of bicycle, improve the performance of bicycle. The existing carbon fiber spoke structure such as the manufacturing method of carbon fiber spoke and carbon fiber spoke disclosed in Chinese patent CN112092532A includes carbon fiber spoke rod, tooth cap capable of being connected with rim and cap head capable of being connected with hub, wherein carbon fiber spoke rod is in the state of middle thick and both ends thin. The existing carbon fiber spoke is assembled, first end with tooth cap is passed through assembly hole on hub, and cap head is made to fall into assembly hole, then tooth cap is connected with rim. In order to adapt to the middle width of carbon fiber spoke rod, it leads to that the aperture of assembly hole on hub is large, and the compatibility is low. At the same time, the size of assembly hole directly affects the radial dimension of hub, causes the problem of heavy weight of hub. SUMMARY

[0003] The utility model discloses a kind of hub structure for installing carbon fiber spoke, to improve the compatibility of the existing hub with the assembly carbon fiber spoke and the problem of heavy weight.

[0004] The utility model discloses a kind of hub structure for installing carbon fiber spoke, to improve the compatibility of the existing hub with the assembly carbon fiber spoke and the problem of heavy weight.

[0005] A kind of hub structure for installing carbon fiber spoke, including hub main body, the two ends of the hub main body are respectively arrayed with first assembly part and second assembly part along circumferential direction, each assembly part is provided with two assembly holes towards opposite, the assembly hole has with the head of cap head Limiting section for adaptation and with the body of cap head Communication section for adaptation, wherein the aperture of the communication section is less than the aperture of the limiting section, and along the inner wall of the communication section, recessed and formed with the flat groove for spoke to pass.

[0006] As further improvement, the communication section has two oppositely arranged flat grooves, one of which is recessed along the outer wall of the hub main body, and the other is recessed towards the corner direction of the assembly part.

[0007] As further improvement, the through space formed between the two flat grooves can at least pass the spoke with a width of 5.5mm.

[0008] As further improvement, the cross-sectional shape of the communication section is key-shaped.

[0009] As a further improvement, the communication section has a length direction size of 5.7 mm and a short direction size of 1.6 mm, and the cross section shape of the flat groove is semicircular.

[0010] As a further improvement, the limiting section is arranged to be similar to the head shape of the cap head.

[0011] As a further improvement, the limiting section has oppositely arranged straight surfaces to limit the rotation of the spoke.

[0012] As a further improvement, the assembly part is arranged to protrude along the outer wall surface of the hub body, and a gap slot is arranged between the two assembly parts for the spoke to pass through.

[0013] By adopting the above technical scheme, the following technical effects can be achieved:

[0014] 1. By arranging the flat groove in the communication section of the assembly hole, the spoke with a width greater than the hole diameter of the communication section can pass through, that is, the same assembly hole can be adapted to more sizes of the spoke width, thereby improving the compatibility of the assembly hole without expanding the hole diameter size. At the same time, the arrangement of the flat groove can avoid the expansion of the hole diameter of the assembly hole, thereby reducing the influence of the spoke width on the hub size, ensuring the structural strength of the hub, and making the hub as a whole lightweight to ensure the riding performance of the bicycle.

[0015] 2. The limiting section is arranged to be similar to the head shape of the cap head to avoid the head of the cap head from shaking in the limiting section, ensure that the spoke can be at a wind-breaking angle after being fixed, and ensure the riding effect. Further, the limiting section has oppositely arranged straight surfaces to limit the rotation of the spoke, which can avoid the problem of loose connection between the spoke and the rim caused by the rotation of the spoke during riding. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0017] Figure 1 is a structural schematic view of one embodiment of the present application;

[0018] Figure 2 is Figure 1 is a structural schematic view from another perspective;

[0019] Figure 3 is a partial structural schematic view of another embodiment of the present application;

[0020] Figure 4 is a structure diagram of a spoke of one embodiment of the utility model;

[0021] Figure 5 is a structure diagram of a spoke of another embodiment of the utility model.

[0022] Icon:

[0023] 1-hub body; 11-first assembly part; 12-second assembly part; 13-assembly hole; 131-limiting section; 132-communication section; 133-flat groove; 134-straight surface; 14-giving way groove; 15-large end; 16-small end; 17-connection section;

[0024] 21-cap head; 211-head part; 212-body part; 22-spoke; 23-dental cap. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] EMBODIMENT

[0027] In combination with Figures 1 to 5 , the embodiment provides a hub structure for installing carbon fiber spokes, comprising a hub body 1, the two ends of the hub body 1 are respectively arrayed with a first assembly part 11 and a second assembly part 12 in the circumferential direction, two assembly holes 13 facing opposite directions are arranged on each assembly part, specifically, the assembly hole 13 has a limiting section 131 for adapting to the head part 211 of the cap head 21 and a communication section 132 for adapting to the body part 212 of the cap head 21, wherein the hole diameter of the communication section 132 is smaller than the hole diameter of the limiting section 131, and the flat groove 133 for the spoke 22 to pass through is recessed on the inner wall of the communication section 132.

[0028] It should be noted that in the embodiment, the flat groove 133 is arranged in the communication section 132 of the assembly hole 13, so that the spoke 22 with a width greater than the aperture of the communication section 132 can pass through, that is, the same assembly hole 13 can be adapted to spokes with more sizes, thereby improving the adaptability of the assembly hole 13 without expanding the aperture size. At the same time, the arrangement of the flat groove 133 can avoid the expansion of the aperture of the assembly hole 13, so as to reduce the influence of the width of the spoke 22 on the size of the hub, guarantee the structural strength of the hub, and make the hub as a whole lightweight, so as to ensure the riding performance of the bicycle.

[0029] In a preferred embodiment, the communication section 132 has two oppositely arranged flat grooves 133, one of which is recessed along the outer wall of the hub body 1, and the other is recessed towards the corner direction of the assembly part. That is, the flat grooves 133 are arranged at positions with relatively thick wall thickness, so as to guarantee the strength of the assembly part. Further, the two flat grooves 133 can be arranged obliquely, so that the passing space between the two flat grooves 133 is larger. In one embodiment, the passing space formed between the two flat grooves 133 can at least allow a spoke 22 with a width of 5.5 mm to pass through, so as to adapt to most carbon fiber spokes on the market. The maximum width of the flat groove 133 is not greater than twice the thickness of the spoke 22. For example, the thickness of the spoke 22 is 0.85 mm, the cross-sectional shape of the communication section 132 is key-shaped, the length direction size is 5.7 mm, the short direction size is 1.6 mm, the cross-sectional shape of the flat groove 133 is semicircular, the diameter is 1.6 mm, and under the condition of guaranteeing the smooth passing of the spoke 22, the size is also avoided to be too large, and the structural strength is guaranteed.

[0030] On the basis of the above-mentioned embodiments, in an optional embodiment of the utility model, the limiting section 131 is arranged to be similar to the shape of the head 211 of the cap head 21, so as to avoid the head 211 of the cap head 21 from shaking in the limiting section 131, and ensure that the spoke can be at a wind-breaking angle after being fixed, and the riding effect is guaranteed. In another embodiment, the limiting section 131 has oppositely arranged straight surfaces 134, which are used to limit the rotation of the spoke 22. Figure 3 and Figure 5 The head 211 of the cap head 21 is arranged in a T shape, and the T-shaped cap head 21 is limited by the straight surface 134 of the limiting section 131, so that the spoke 22 cannot rotate after the cap head 21 is placed in the limiting section 131, and the problem that the spoke 22 rotates to cause the tooth cap 23 to be loose from the rim during riding can be avoided.

[0031] In other embodiments, the assembling portions are protruded along the outer wall surface of the hub body 1, and a slot 14 is arranged between the two assembling portions for the spoke 22 to pass through. The arrangement of the slot 14 can also reduce the weight of the hub, so as to further ensure the light weight of the hub. For example, the first assembling portion 11 and the second assembling portion 12 have the same structure, the assembling portions are lugs, and are arranged at intervals along the circumferential direction of the hub body 1. The outer periphery of the assembling portion is a circular arc transition, and a recess is arranged between the two assembling holes 13 to reduce the weight of the material. The circular arc transition can avoid stress concentration, ensure the structural strength of the assembling portion, and also can enhance the aesthetics of the hub and improve the texture of the hub. The forming method of the hub body 1 is forging followed by machining, so as to ensure the strength of the hub body 1. In another preferred embodiment, the hub body 1 has a large end 15 and a small end 16, the first assembling portion 11 is formed on the small end 16, the second assembling portion 12 is formed on the large end 15, and the large end 15 and the small end 16 are connected through a connecting segment 17 with a decreasing cross-sectional size, so as to optimize the weight distribution of the wheel and obtain better performance.

[0032] The above are only preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solution falling within the idea of the present application belongs to the protection scope of the present application.

Claims

1. A hub structure for mounting carbon fiber spokes, characterized in that, The wheel includes a hub body, and a first assembly part and a second assembly part are respectively arranged in an array at both ends along the circumferential direction. Each assembly part is provided with two assembly holes facing opposite directions. The assembly holes have a limiting section for fitting the head of the cap and a connecting section for fitting the body of the cap. The diameter of the connecting section is smaller than the diameter of the limiting section, and a flat groove for the spokes to pass through is formed along the inner wall of the connecting section.

2. The hub structure for mounting carbon fiber spokes according to claim 1, characterized in that, The connecting section has two oppositely arranged flat grooves, one of which is recessed along the outer wall of the hub body, and the other is recessed toward the corner of the assembly part.

3. The hub structure for mounting carbon fiber spokes according to claim 2, characterized in that, The through space formed between the two flat slots is large enough for spokes with a width of at least 5.5 mm to pass through.

4. The hub structure for mounting carbon fiber spokes according to any one of claims 1-3, characterized in that, The cross-sectional shape of the connecting segment is key-shaped.

5. The hub structure for mounting carbon fiber spokes according to claim 4, characterized in that, The connecting segment has a length of 5.7 mm and a width of 1.6 mm, and the cross-sectional shape of the flat groove is semi-circular.

6. The hub structure for mounting carbon fiber spokes according to claim 1, characterized in that, The limiting segment is configured to resemble the shape of the head of the hat.

7. The hub structure for mounting carbon fiber spokes according to claim 6, characterized in that, The limiting section has oppositely arranged straight surfaces to restrict the rotation of the spokes.

8. The hub structure for mounting carbon fiber spokes according to claim 1, characterized in that, The assembly part protrudes along the outer wall of the hub body, and a clearance groove for the spokes to pass through is provided between the two assembly parts.

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