Carbon fiber spoke

Abstract

The utility model belongs to the technical field of spokes, and particularly relates to a carbon fiber spoke which comprises a carbon fiber strip, rotating threads are arranged at the two ends of the carbon fiber strip, a spoke cap head and a spoke tooth cap are arranged at the two ends of the carbon fiber strip respectively, and threaded grooves are formed in the surface of one end of the spoke cap head and the surface of one end of the spoke tooth cap respectively. The carbon fiber spoke comprises a carbon fiber strip, a spoke cap head and a spoke tooth cap. The spoke cap head and the tooth cap are located at the two ends of the spoke body respectively. The insertion locking holes are formed in the middle of the spoke cap head and the middle of the tooth cap, the fixing pins are embedded in the insertion locking holes, transverse fastening force is applied to the spoke body through the fixing pins, and connection between the spoke cap head and the tooth cap and the carbon fiber spoke is enhanced through the structure. The tension of the carbon fiber spokes is kept stable in the wheel weaving riding process; and the conical insertion locking holes are matched with the fixing pins, so that better anti-skid performance can be provided, and the spokes are prevented from falling off during high-speed riding or impact bearing.

Description

TECHNICAL FIELD

[0001] The utility model relates to spoke technical field especially relates to a carbon fiber spoke. BACKGROUND

[0002] In the existing bicycle spoke design, although carbon fiber spokes are widely adopted due to their lightweight and high-strength characteristics, there are still some technical problems in connection stability. The connection mode of traditional spoke caps and tooth caps with carbon fiber spokes often relies on threaded connection. This connection mode may have the following problems during long-term use and vibration: connection loosening: due to continuous vibration and impact during riding, threaded connection may gradually loosen, resulting in unstable spoke tension, which in turn affects the balance of the rim and the performance of the entire vehicle. Maintenance difficulty: once the spoke cap or tooth cap is loose, it needs to be tightened again, and the carbon fiber material is sensitive to thread damage, repeated disassembly and installation may damage the threads, increasing the difficulty of maintenance. Therefore, a carbon fiber spoke is needed. SUMMARY

[0003] Based on the existing technical problems, the utility model provides a carbon fiber spoke.

[0004] The utility model provides a carbon fiber spoke, including carbon fiber strip, both ends of carbon fiber strip are provided with rotating thread, both ends of carbon fiber strip are provided with spoke cap and spoke tooth cap respectively, the surface of one end of spoke cap and spoke tooth cap is provided with thread groove, the end face of spoke cap and spoke tooth cap close to carbon fiber strip is respectively connected with the surface thread of two rotating threads.

[0005] The arc surface of spoke cap and spoke tooth cap is provided with plug-in locking hole, the plug-in locking hole also penetrates the surface of carbon fiber strip, the inner wall of plug-in locking hole is tightly matched with fixed pin, the inner wall of plug-in locking hole is conical, the outer surface of fixed pin is matched with the inner wall of plug-in locking hole.

[0006] Preferably, one end of the spoke cap is provided with an arc protrusion, and the diameter of the arc protrusion is greater than the outer diameter of the other end of the spoke cap.

[0007] Preferably, the end face corner of the arc protrusion is rounded.

[0008] Preferably, the cross section of the carbon fiber strip is circular, and the arc diameters of both ends of the carbon fiber strip are smaller than the arc diameter of the middle section.

[0009] Preferably, a conical shape is further arranged between the two end cylindrical surfaces of the carbon fiber strip and the middle end cylindrical surface, the large end of the carbon fiber strip conical shape is located at the middle end cylindrical surface, and the small end of the carbon fiber strip conical shape is located at the end surface cylindrical surface of the carbon fiber strip.

[0010] Preferably, one end of the spoke cap is threaded, the other end of the spoke cap has a diameter larger than the threaded diameter of the spoke cap, and the spoke cap is further provided as a stepped shaft.

[0011] The beneficial effects in the utility model are:

[0012] The device comprises a carbon fiber strip, a spoke cap and a spoke cap. The spoke cap and the cap are respectively located at both ends of the spoke body. The middle part of the spoke cap and the cap is provided with an insertion locking hole and a fixed pin, and the spoke body is transversely fastened by the fixed pin. This structure enhances the connection between the spoke cap, the cap and the carbon fiber spoke. The carbon fiber spoke maintains stable carbon spoke tension during the cycling process of the weaving wheel. The insertion locking hole and the fixed pin in the conical shape can provide better anti-skid performance and ensure that the spoke will not fall off during high-speed cycling or impact. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a structural diagram of a carbon fiber spoke.

[0014] Fig. 2 It is a three-dimensional exploded view of a carbon fiber spoke.

[0015] In the figure: 1, carbon fiber strip; 2, rotating thread; 3, spoke cap; 4, spoke cap; 5, threaded groove; 6, insertion locking hole; 7, fixed pin; 8, arc protrusion. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0017] Referring to Figs. 1-2 A carbon fiber spoke comprises a carbon fiber strip 1, rotating threads 2 arranged at both ends of the carbon fiber strip 1, a spoke cap 3 and a spoke cap 4 arranged at both ends of the carbon fiber strip 1 respectively, threaded grooves 5 arranged at one end surface of the spoke cap 3 and the spoke cap 4, and the end surfaces of the spoke cap 3 and the spoke cap 4 close to the carbon fiber strip 1 are respectively threadedly connected with the surfaces of the two rotating threads 2.

[0018] Specifically, by setting a rotating thread 2 at both ends of the carbon fiber strip 1 and threadedly connecting with the thread groove 5 of the spoke cap head 3 and the spoke cap 4, the connection between the spoke and the rim and hub is more secure, reducing the loosening phenomenon and improving the safety and stability during riding.

[0019] One end of the spoke cap 4 is provided with a circular arc protrusion 8, and the diameter of the circular arc protrusion 8 is greater than the outer diameter of the other end of the spoke cap 4; the end face corner of the circular arc protrusion 8 is round.

[0020] Specifically, the design of the circular arc protrusion 8 can increase the structural strength of the spoke cap 4, making it more solid when subjected to external forces and less prone to deformation or damage; the diameter of the circular arc protrusion 8 is greater than that of the other end of the spoke cap 4, which can better adapt to the size and shape of different hubs, ensuring that the spoke cap 4 can be securely installed on the hub; the round design can reduce stress concentration of the spoke cap 4 when subjected to impact or load, thereby reducing the risk of fracture; the circular arc protrusion 8 and the round design can reduce the sharp edges of the spoke cap 4, reducing the risk of injury during riding due to accidental contact.

[0021] The cross section of the carbon fiber strip 1 is circular, and the diameter of the two ends of the carbon fiber strip 1 is smaller than the diameter of the middle section; the two ends of the carbon fiber strip 1 are also provided with a conical shape between the cylindrical surface of the two ends and the middle end, and the large end of the carbon fiber strip 1 is located at the middle cylindrical surface, and the small end of the carbon fiber strip 1 is located at the end face cylindrical surface of the carbon fiber strip 1.

[0022] Specifically, the design of the two ends with a smaller diameter than the middle section can make the stress more evenly distributed on the carbon fiber strip 1, reducing stress concentration and thereby improving the durability and fracture resistance of the spoke; the smaller diameter of the two ends can reduce the amount of material used at the two ends of the spoke, thereby reducing the overall weight and improving the performance of the bicycle; the conical shape design is more smooth and aesthetically pleasing in appearance, enhancing the overall visual effect of the vehicle; the conical shape can effectively transmit force from the middle section of the spoke to the two ends, thereby improving the mechanical properties of the spoke, especially when subjected to torsional and bending forces.

[0023] One end of the spoke cap 3 is threaded, the other end of the spoke cap 3 is larger in diameter than the threaded diameter of the spoke cap 3, and the spoke cap 3 is also stepped shaft.

[0024] Specifically, the threaded design allows the spoke cap 3 to be tightly connected with the rim or other components of the vehicle, while the stepped shaft design can provide additional support to prevent the spoke cap 3 from rotating or loosening during high-speed riding or vibration; the stepped shaft design helps to evenly transmit force to the spoke, reducing stress concentration and improving the overall strength and durability of the spoke.

[0025] The arc surfaces of the spoke cap head 3 and the spoke tooth cap 4 are provided with plug-in locking holes 6, the plug-in locking holes 6 also penetrate the surface of the carbon fiber spoke 1, the inner wall of the plug-in locking hole 6 is tightly fitted with a fixing pin 7, the inner wall of the plug-in locking hole 6 is conical, and the outer surface of the fixing pin 7 is matched with the inner wall of the plug-in locking hole 6.

[0026] The device comprises a carbon fiber spoke 1, a spoke cap head 3 and a spoke tooth cap 4. The spoke cap head 3 and the tooth cap are respectively arranged at both ends of the spoke body. The middle part of the spoke cap head 3 and the tooth cap is provided with a plug-in locking hole 6 and a fixed pin 7 is embedded in the plug-in locking hole 6, the spoke body is transversely fastened by the fixed pin 7, the structure enhances the connection between the spoke cap head 3, the tooth cap and the carbon fiber spoke. The carbon fiber spoke keeps the carbon spoke tension stable during the process of riding on the wheel, and the cooperation of the conical plug-in locking hole 6 and the fixed pin 7 can provide better anti-skid performance, and ensure that the spoke will not fall off when high-speed riding or impact is borne.

[0027] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A carbon fibre spoke comprising a carbon fibre strip (1) characterised in that: Both ends of the carbon fiber strip (1) are provided with rotating threads (2), both ends of the carbon fiber strip (1) are provided with spoke caps (3) and spoke tooth caps (4) respectively, one end surface of the spoke caps (3) and the spoke tooth caps (4) is provided with a threaded groove (5), the end surface of the spoke caps (3) and the spoke tooth caps (4) close to the carbon fiber strip (1) is respectively threadedly connected with the surface of two rotating threads (2); The arc surface of the spoke caps (3) and the spoke tooth caps (4) is provided with an insertion locking hole (6), the insertion locking hole (6) also penetrates the surface of the carbon fiber strip (1), the inner wall of the insertion locking hole (6) is tightly fitted with a fixed pin (7), the inner wall of the insertion locking hole (6) is conical, the outer surface of the fixed pin (7) is matched with the inner wall of the insertion locking hole (6).

2. A carbon fiber spoke according to claim 1, characterized in that: One end of the spoke tooth cap (4) is provided with an arc protrusion (8), the diameter of the arc protrusion (8) is greater than the outer diameter of the other end of the spoke tooth cap (4).

3. A carbon fibre spoke according to claim 2, wherein: The end face corner of the arc protrusion (8) is provided with a round corner.

4. A carbon fiber spoke according to claim 1, wherein: The cross section of the carbon fiber strip (1) is circular, and the arc diameters of both ends of the carbon fiber strip (1) are smaller than the arc diameter of the middle section.

5. A carbon fiber spoke according to claim 1, wherein: The carbon fiber strip (1) is further provided with a conical shape between the cylindrical surface of both ends and the cylindrical surface of the middle section, the large end of the carbon fiber strip (1) is located in the middle section of the cylindrical surface, and the small end of the carbon fiber strip (1) is located in the end face cylindrical surface of the carbon fiber strip (1).

6. A carbon fiber spoke according to claim 1, wherein: One end of the spoke cap (3) is provided with a thread, the diameter of the other end of the spoke cap (3) is greater than the thread diameter of the spoke cap (3), and the spoke cap (3) is further provided with a stepped shaft.

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