Thermoplastic fiber spoke structure

Abstract

The utility model provides a thermoplastic fiber spoke structure. The thermoplastic fiber spoke structure comprises a fiber rod which is a rod body made of thermoplastic resin base materials and fibers; each sleeve is arranged on the fiber rod in a sleeving mode and comprises at least one clamping concave part, and each clamping concave part is embedded into the fiber rod in the radial direction. According to the spoke, the clamping concave part which is radially embedded into the fiber rod is formed on the sleeve, so that the problem that a connecting piece of an existing spoke falls off due to deterioration of an adhesive can be solved, and the combination stability degree can be improved.

Description

Technical Field

[0001] The utility model relates to a bicycle component, in particular to a thermoplastic fiber spoke structure with relatively stable combination. Background Art

[0002] As the trend of cycling becomes more and more popular, more and more people choose bicycles as a means of transportation and fitness.

[0003] The wheel of a bicycle includes a hub, a rim surrounding the hub, and a plurality of spokes connecting the hub and the rim. The existing spokes include a rod body and two connecting members respectively sleeved and fixed at both ends of the rod body, and the two connecting members are respectively used to connect with the hub and the rim.

[0004] In order to consolidate the rod body and the connecting piece and to prevent the rod body and the connecting piece from moving relative to each other, the existing carbon fiber spokes are coated with adhesive on the inner circumference of the connecting piece to combine the rod body and the connecting piece, or the rod body is restricted by a cured adhesive on the inner circumference of the connecting piece to prevent the rod body and the connecting piece from moving relative to each other.

[0005] However, after a period of time, the properties of the adhesive often change and reduce or lose the bonding strength, causing the rod body and the connecting piece to fall off. Therefore, it can be seen that there is still room for further improvement in the existing spoke bonding method. Summary of the invention

[0006] In order to solve the above-mentioned problem that the properties of the existing spokes often change due to the adhesive, the utility model provides a thermoplastic fiber spoke structure, which can achieve the purpose of improving the structural stability of the spokes.

[0007] The utility model solves the technical problem of the thermoplastic fiber spoke structure, which includes:

[0008] A fiber rod, which is a rod body made of a thermoplastic resin matrix and fibers; and

[0009] At least one sleeve, each sleeve is sleeved on the fiber rod and includes at least one clamping recess, each clamping recess is radially embedded in the fiber rod.

[0010] In the thermoplastic fiber spoke structure, each of the clamping recesses of each of the sleeves comprises a width and a depth; the width of each of the sleeves is 9 mm; and the depth of each of the sleeves is 0.3 to 0.9 mm.

[0011] In the thermoplastic fiber spoke structure, the at least one clamping recess is a plurality of clamping recesses, and the plurality of clamping recesses are annularly arranged on the outer peripheral surface of the sleeve.

[0012] In the thermoplastic fiber spoke structure, the fiber rod comprises a shaping section formed by heating and shaping, the shaping section is located in the middle section of the fiber rod and has a thin cross section.

[0013] The technical means of the utility model can achieve the improved effect that: the thermoplastic fiber spoke structure of the utility model forms a radially embedded clamping recess in the sleeve by heating and shaping the fiber rod and the sleeve, so that the sleeve and the fiber rod can be clamped. Since the sleeve and the fiber rod are combined in a structural manner, there will be no situation where the two fall off due to the deterioration of the adhesive, which can improve the firmness of the combination between the sleeve and the fiber rod of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional exploded schematic diagram of a preferred embodiment of the thermoplastic fiber spoke structure of the utility model.

[0015] Figure 2 It is a three-dimensional schematic diagram of a preferred embodiment of the thermoplastic fiber spoke structure of the utility model.

[0016] Figure 3 It is a partial cross-sectional schematic diagram of a preferred embodiment of the thermoplastic fiber spoke structure of the utility model.

[0017] Figure 4 It is a partial cross-sectional enlarged stereoscopic schematic diagram of a preferred embodiment of the thermoplastic fiber spoke structure of the utility model.

[0018] Figure 5 It is a partial cross-sectional schematic diagram of a preferred embodiment of the thermoplastic fiber spoke structure of the utility model.

[0019] Figure 6 This is a preferred embodiment of the thermoplastic fiber spoke structure of the utility model. Figure 5 Schematic diagram of the cross section at AA in the middle.

[0020] Figure 7 The utility model is a flow chart of the manufacturing method of the thermoplastic fiber spoke structure. DETAILED DESCRIPTION

[0021] In order to understand the technical features and practical effects of the utility model in detail and to realize them according to the content of the invention, a preferred embodiment as shown in the figure is further described in detail as follows:

[0022] A preferred embodiment of the thermoplastic fiber spoke structure manufactured by the manufacturing method of the thermoplastic fiber spoke structure of the utility model is as follows: Figure 1 and Figure 2As shown. In the preferred embodiment, a fiber rod 10 and two sleeves 20A, 20B are included. The thermoplastic fiber spoke structure of the utility model is used to connect the hub and rim of a bicycle. The fiber rod 10 is a rod body made of a thermoplastic resin base material and fibers.

[0023] like Figure 1 and Figure 2 As shown, the fiber rod 10 includes a shaping section 12 formed by heating and shaping. The shaping section 12 is located in the middle section of the fiber rod 10 and has a thin cross section so as to reduce wind resistance.

[0024] like Figure 1 , Figure 2 and Figure 6 As shown, in the present invention, the cross section of the shaping section 12 is slightly rectangular. In practice, as long as the cross section of the shaping section 12 is thin enough to reduce wind resistance, the present invention does not impose any specific restrictions on the profile of the cross section of the shaping section 12.

[0025] In the present invention, the fiber rod 10 can be made of a thermoplastic resin base material and carbon fiber, Kevlar fiber, Dyneema fiber, nylon fiber or other tough fiber.

[0026] like Figure 2 and Figure 3 As shown, the two sleeves 20A and 20B are sleeved on the fiber rod 10 and are respectively adjacent to the opposite ends of the fiber rod 10; each sleeve 20A / 20B can be made of a flexible material such as metal, and each sleeve 20A / 20B can be heated and pressurized together with the fiber rod 10 so that the sleeve 20A / 20B forms at least one clamping recess 21 radially embedded in the fiber rod 10, and each clamping recess 21 of each sleeve 20 includes a width W along the length direction of the fiber rod 10, and a depth D along the radial direction of the fiber rod 10; the width W of each clamping recess 21 is defined along the length direction of the fiber rod 10; the depth D of each clamping recess 21 is defined along the radial direction of the fiber rod 10. In application, each sleeve 20A / 20B can be provided with a plurality of the clamping recesses 21, which are annularly provided on the outer circumference of the sleeve 20A / 20B; specifically, in a preferred embodiment of the present invention, each sleeve 20A / 20B is provided with four clamping recesses 21 on its outer circumference. Further, the plurality of clamping recesses 21 provided on each sleeve 20A / 20B can be divided into two groups, and the two groups of clamping recesses 21 are spaced apart and annularly provided on the outer circumference of the sleeve 20A / 20B, respectively, so that the clamping between the fiber rod 10 and the sleeve 20A / 20B is more stable.

[0027] like Figure 2 , Figure 3 and Figure 5 As shown, in the preferred embodiment of the present invention, the sleeve 20A is provided with a screw lock section 22 ; the sleeve 20B is provided with a clamping head 23 .

[0028] like Figure 7 As shown, the manufacturing method of the thermoplastic fiber spoke structure of the preferred embodiment of the utility model includes a sleeve installation step S1, a hot pressing forming step S2, a shaping section heating and shaping step S3 and a processing step S4.

[0029] The step S1 of installing the sleeve is to prepare a fiber rod 10 made of a thermoplastic resin substrate and fibers, and a sleeve 20A / 20B; and sleeve the sleeve 20A / 20B on the fiber rod 10.

[0030] Hot pressing forming step S2: heating and pressurizing the sleeve 20A / 20B and the fiber rod 10, so that the fiber rod 10 with a thermoplastic resin as a base material is deformed together with the sleeve 20A / 20B to form the sleeve 20A / 20B as follows: Figures 2 to 4 As shown, at least one of the clamping recesses 21 radially embedded in the fiber rod 10 allows the sleeve 20A / 20B and the fiber rod 10 to be clamped to each other.

[0031] The shaping section heating and shaping step S3: The middle section of the fiber rod 10 is heated and shaped to form the shaping section 12, so that the shaping section 12 has a thin cross section that can reduce wind resistance. In the present utility model, the order of the hot pressing forming step S2 and the shaping section heating and shaping step S3 is not specifically limited.

[0032] Processing step S4: processing the fiber rod 10 to remove the burrs formed by heating and shaping, especially processing the shaping section 12 of the fiber rod 10 to remove the burrs.

[0033] Compared with the existing spokes that use adhesive to consolidate the rod body and the connecting piece, the thermoplastic fiber spoke structure made by the manufacturing method of the thermoplastic fiber spoke structure of the utility model heats and pressurizes the sleeve 20A / 20B and the fiber rod 10, and the sleeve 20A / 20B sleeved on the fiber rod 10 forms a ring arrangement and radially embeds the clamping recess 21 of the fiber rod 10, so that the fiber rod 10 with a thermoplastic resin as the base material and the sleeve 20A / 20B are deformed together and clamped to each other. The utility model combines the sleeve 20A / 20B and the fiber rod 10 in a structural manner, and there will be no situation where the fiber rod 10 and the sleeve 20A / 20B fall off from each other due to the deterioration of the adhesive, which can improve the degree of stability of the combination between the two.

[0034] Please refer to the following table obtained by conducting a tensile test on the thermoplastic fiber spoke structure of the present invention; wherein the maximum fiber diameter of each fiber rod 10 is 2.25 mm:

[0035]

[0036] It can be seen from the above table that when the width W of each clamping recess 21 of each sleeve 20A / 20B is 9 millimeters (mm) and the depth D is 0.3 to 0.9 millimeters (mm), the thermoplastic fiber spoke structure of the present invention will not produce the situation that the sleeve 20A / 20B falls off until the tension exceeds 290 kilograms (kgf).

[0037] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any person with ordinary knowledge in the technical field can make equivalent embodiments by partial changes or modifications to the technical content disclosed in the utility model without departing from the scope of the technical solution of the utility model, and they still fall within the scope of the technical solution of the utility model without departing from the technical solution of the utility model.

Claims

1. A thermoplastic fiber spoke structure, characterized in that: include: A fiber rod, which is a rod body made of a thermoplastic resin matrix and fibers; and At least one sleeve, each sleeve is sleeved on the fiber rod and includes at least one clamping recess, each clamping recess is radially embedded in the fiber rod.

2. The thermoplastic fiber spoke structure according to claim 1, characterized in that: Each of the clamping recesses of each of the sleeves includes a width and a depth; the width of each of the sleeves is 9 mm; and the depth of each of the sleeves is 0.3 to 0.9 mm.

3. The thermoplastic fiber spoke structure according to claim 2, characterized in that: The at least one clamping recess is a plurality of clamping recesses, and the plurality of clamping recesses are annularly arranged on the outer peripheral surface of the sleeve.

4. The thermoplastic fiber spoke structure according to any one of claims 1 to 3, characterized in that: The fiber rod comprises a shaping section formed by heating and shaping, the shaping section is located in the middle section of the fiber rod and has a thin cross section.

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