An assembly structure for carbon fiber spokes
By designing carbon fiber spokes and combining them with the wedge-shaped groove flange structure of the joint and nut joint, the problem of loosening of bicycle spokes during installation, removal and maintenance has been solved, achieving lightweighting and improved safety of bicycle wheels.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 厦门凯世迈复材科技有限公司
- Filing Date
- 2025-05-14
- Publication Date
- 2026-05-29
AI Technical Summary
Existing bicycle spokes are prone to stripping and loosening during frequent assembly and disassembly for maintenance, making it difficult to balance lightweight design and safety.
The spokes are made of carbon fiber and have a coupling joint and a nut joint at both ends. The reducer head has a wedge groove. The inner walls of the coupling joint and the nut joint have flanges. The coupling joint is connected to the hub through the wedge groove and the flange. The nut joint is threaded to the metal component inside the hub to enhance the structural strength.
This improves the connection strength of the spokes, prevents them from loosening, and ensures the lightweight and safety of the bicycle wheel.
Smart Images

Figure CN224296924U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bicycle parts technology, specifically to an assembly structure for carbon fiber spokes. Background Technology
[0002] Bicycle wheels not only have to support the weight of the user and the frame, but also have to withstand the stress from the vertical impacts and lateral swaying caused by various road conditions. In addition, with the trend of bicycles becoming lighter in recent years, the lightweighting of bicycle wheels has also become imperative. Therefore, many people are dedicated to designing bicycle wheels that take into account both lightweighting and safety.
[0003] Currently, bicycle spokes are connected to the rim via threads. During frequent assembly and disassembly for maintenance, these threads are prone to stripping and there is a risk of them coming loose. Utility Model Content
[0004] (I) Problems to be solved
[0005] The technical problem to be solved by this utility model is to overcome the above-mentioned technical defects and provide an assembly structure for carbon fiber spokes that increases connection strength, reduces weight, and prevents loosening.
[0006] (II) Technical Solution
[0007] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: an assembly structure for carbon fiber spokes, including spokes, wherein the spokes are made of carbon fiber material, and both ends of the spokes are respectively connected to a joint and a nut joint;
[0008] Both ends of the spoke are engaged with the coupling joint and the nut joint. The nut joint has an external thread at the end away from the spoke, and the coupling joint has an installation flange at the end away from the spoke.
[0009] As an improvement, both ends of the spokes are provided with reducing heads, and the connecting joint and nut joint are respectively sleeved and locked with the reducing heads on both sides.
[0010] As an improvement, the variable diameter head is recessed with a wedge-shaped groove, and multiple sets of wedge-shaped grooves are arrayed along the circumference of the variable diameter head;
[0011] Both the connecting joint and the nut joint have protruding flanges on their inner walls that mate with the wedge-shaped grooves.
[0012] As an improvement, the junction between the mounting flange and the connecting joint is rounded.
[0013] (III) Beneficial Effects
[0014] The advantages of this utility model compared with the prior art are as follows: In this application, spokes, coupling joints, and nut joints can be used for snap-fit connection to prevent loosening during use. At the same time, in this application, the coupling joint is connected to the hub, and the nut joint is connected to the wheel hub. A threaded metal kit is pre-embedded in the wheel hub and connected to the nut joint to complete the assembly and use, ensuring the strength of use. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of an assembly structure for carbon fiber spokes.
[0016] Figure 2 This is a second-view structural diagram of an assembly structure for carbon fiber spokes.
[0017] As shown in the figure: 1. Spoke; 2. Connecting joint; 3. Nut joint; 4. External thread; 5. Mounting flange; 6. Variable diameter head; 7. Wedge groove; 8. Flange. Detailed Implementation
[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals.
[0019] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.
[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0022] To make the content of this utility model easier to understand, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.
[0023] Please refer to the appendix carefully. Figure 1-2An assembly structure for carbon fiber spokes includes spokes 1, which are made of carbon fiber material, and connecting joints 2 and nuts 3 to both ends of spokes 1 respectively.
[0024] The spoke 1 is engaged with the coupling joint 2 and the nut joint 3 at both ends. The nut joint 3 has an external thread 4 at the end away from the spoke 1, and the coupling joint 2 has an installation flange 5 at the end away from the spoke 1.
[0025] During assembly and use, both ends of the spoke 1 are provided with a reducing head 6, and the connecting joint 2 and the nut joint 3 are respectively sleeved and locked with the reducing heads 6 on both sides.
[0026] The reducing head 6 has a recessed wedge-shaped groove 7, and multiple sets of wedge-shaped grooves 7 are arranged along the circumference of the reducing head 6. The inner walls of the connecting joint 2 and the nut joint 3 are both provided with protruding flanges 8 that cooperate with the wedge-shaped grooves 7.
[0027] The joint between the mounting flange 5 and the coupling joint 2 is rounded. The mounting flange 5 and the coupling joint 2 are connected to the hole of the hub. The nut joint 3 is connected by a threaded connection through a metal kit embedded in the hub to ensure structural strength and prevent the spokes from being damaged during subsequent maintenance.
[0028] The contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0029] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.
[0030] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. An assembly structure for carbon fiber spokes, characterized in that: Includes spokes (1), which are made of carbon fiber, and the two ends of the spokes (1) are respectively connected to a joint (2) and a nut joint (3). The two ends of the spoke (1) are engaged with the coupling joint (2) and the nut joint (3). The nut joint (3) has an external thread (4) at the end away from the spoke (1), and the coupling joint (2) has an installation flange (5) at the end away from the spoke (1).
2. The assembly structure for carbon fiber spokes according to claim 1, characterized in that: Both ends of the spoke (1) are provided with a reducing head (6), and the connecting joint (2) and the nut joint (3) are respectively fitted and locked with the reducing heads (6) on both sides.
3. The assembly structure for carbon fiber spokes according to claim 2, characterized in that: The variable diameter head (6) is provided with a wedge-shaped groove (7) recessed inward, and multiple sets of wedge-shaped grooves (7) are arranged along the circumference of the variable diameter head (6); The inner walls of both the connecting joint (2) and the nut joint (3) are provided with flanges (8) that mate with the wedge groove (7).
4. The assembly structure for carbon fiber spokes according to claim 1, characterized in that: The junction between the mounting flange (5) and the connecting joint (2) is rounded.