Rim spoke connecting structure

Abstract

The utility model discloses a rim spoke connecting structure, including spoke, tooth cap, nut and rim, the rim is provided with spoke hole, tooth cap includes screw tooth portion and fixed portion, the screw tooth portion is provided with external thread, the end of tooth cap provided with the fixed portion is connected and fixed with the spoke, and the periphery of the fixed portion is provided with a fixed plane. The tooth cap penetrates into the spoke hole until the thread portion extends out of the outer edge of the spoke hole, the end of the fixing portion completely extends into the spoke hole, a fixing tool extends into the spoke hole and is matched with the fixing plane to prevent the tooth cap and the spoke from rotating, meanwhile, the nut is in threaded connection with the tooth cap, and therefore the spoke and the rim are connected. According to the wheel rim and spoke connecting structure, the fixing plane is arranged on the outer peripheral face of an original tooth cap, the size and the weight of the tooth cap are reduced, and wind resistance during riding can be reduced; when the nut and the tooth cap are matched and fixed in a threaded mode, efficient and stable connection of the spokes and the rim is achieved through matching of the fixing tool and the fixing plane.

Description

Technical Field

[0001] This utility model relates to the field of bicycle accessories, and more specifically, to a wheel rim spoke connection structure. Background Technology

[0002] Spokes are common vehicle components used to connect the rim and hub. One end of the spoke connects to the hub, and the other end connects to the rim. Carbon fiber spokes are connected to the rim as follows: a threaded cap (made of metal with threads on its outer circumference) is placed at the end of the spoke. The rim has spoke holes, and the threaded cap passes through the spoke holes and is threaded into a nut (made of metal with internal threads). However, during the process of screwing the nut onto the threaded cap, the threaded cap and spoke usually rotate together with the nut, resulting in low efficiency or failure to tighten the connection properly. To solve the above problems, existing methods typically extend a structure at the end where the threaded cap connects to the spoke, and this extension structure protrudes outside the spoke hole. When tightening the nut, a tool such as a wrench is used to clamp the extension structure to fix the threaded cap and spoke, thereby completing the tightening connection. However, the addition of the extension structure increases the size and weight of the threaded cap, and the extension structure exposed outside the spoke hole also increases wind resistance during riding.

[0003] In view of this, the inventors of this application have invented a wheel rim spoke connection structure. Utility Model Content

[0004] The purpose of this invention is to provide a wheel spoke connection structure that can achieve an efficient and stable connection between the spokes and the wheel rim.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a wheel rim spoke connection structure, including spokes, a toothed cap, a nut, and a wheel rim. The wheel rim has spoke holes. The toothed cap includes a threaded portion and a fixing portion. The threaded portion has external threads. One end of the toothed cap with the fixing portion is connected and fixed to the spoke. The outer periphery of the fixing portion has a fixing plane. The toothed cap is inserted into the spoke hole until the threaded portion extends out of the outer edge of the spoke hole and the end of the fixing portion is completely inserted into the spoke hole. A fixing tool is inserted into the spoke hole and cooperates with the fixing plane to prevent the toothed cap and spoke from rotating. At the same time, the nut is threadedly connected to the toothed cap, thereby realizing the connection between the spokes and the wheel rim.

[0006] Furthermore, the number of fixed planes is two, and the two fixed planes are arranged symmetrically at the center.

[0007] Furthermore, the threaded portion and the fixing portion are integrally formed structures, the threaded portion is cylindrical, and any radial dimension of the fixing portion is not greater than the diameter of the threaded portion.

[0008] Furthermore, the fixing tool is a fixing wrench, which includes a gripping part and a locking part at one end of the gripping part. The locking part has a corresponding locking groove for locking the fixing part, and the inner wall of the locking groove has a mating plane that mates with the fixing plane.

[0009] Furthermore, the outer surface of the engaging part is an arc surface adapted to the inner wall of the spoke hole.

[0010] Furthermore, a clearance groove is provided on one side of the fixing tool, the clearance groove passing through both ends of the fixing tool and communicating with the slot.

[0011] Furthermore, the spokes are carbon fiber spokes, the rim is a carbon fiber rim, and the nuts and bolts are all metal parts.

[0012] By adopting the above technical solution, this utility model has the following advantages compared with the prior art:

[0013] This utility model relates to a spoke connection structure for wheel rims. By setting a fixed plane on the outer circumference of the original spoke cap, the size and weight of the spoke cap are reduced. During assembly, the end of the spoke cap that connects to the spoke is fully inserted into the spoke hole, which also reduces wind resistance during riding. At the same time, when the nut and spoke cap are threaded together, the cooperation between the fixing tool and the fixed plane can effectively prevent the spoke cap and spoke from rotating in the spoke hole, ensuring that the nut and spoke cap are properly engaged, thereby achieving an efficient and stable connection between the spoke and the wheel rim. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the assembly process of the spoke connection structure of the wheel rim of this utility model;

[0015] Figure 2 for Figure 1 A magnified view of a portion of the image;

[0016] Figure 3 for Figure 1 A partial sectional view;

[0017] Figure 4 This is a schematic diagram showing the fitting of the fixing tool and the dental cap of this utility model;

[0018] Figure 5 This is a schematic diagram of the fixing tool of this utility model;

[0019] Figure 6 , Figure 7 These are schematic diagrams of two design embodiments of the dental cap of this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 10 spokes

[0022] 20-tooth cap,

[0023] 21-Threaded section,

[0024] 22-Fixing part, 221-Fixing plane,

[0025] 30-Wheel Rim

[0026] 31-Spoke holes,

[0027] 40-Fixed tools,

[0028] 41-Grip section,

[0029] 42-Matching part, 421-Matching slot, 422-Matching plane,

[0030] 43 - Relief groove. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0032] It should be noted that in this utility model, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element of this utility model must have a specific orientation, and therefore should not be construed as a limitation of this utility model. Example

[0033] Cooperate Figures 1 to 7 As shown, this utility model discloses a spoke connection structure, in which the two ends of the bicycle spoke connection are respectively connected to the hub and the rim 30. Both the spokes 10 and the rim 30 of this utility model are carbon fiber products. The spoke 10 connection structure of this utility model can realize a fast, efficient and firm connection between the spokes 10 and the rim 30.

[0034] Cooperate Figures 1 to 7As shown, a spoke 10 connection structure includes spokes 10, a threaded cap 20, a nut, and a rim 30. The rim 30 has a spoke hole 31. The threaded cap 20 includes a threaded portion 21 and a fixing portion 22. The threaded portion 21 has an external thread. One end of the threaded cap 20 with the fixing portion 22 is connected and fixed to the spoke 10. The outer periphery of the fixing portion 22 has a fixing plane 221. The threaded cap 20 is inserted into the spoke hole 31 until the threaded portion 21 extends out of the outer edge of the spoke hole 31 and the end of the fixing portion 22 is completely inserted into the spoke hole 31. A fixing tool 40 is inserted into the spoke hole 31 and cooperates with the fixing plane 221 to prevent the threaded cap 20 and the spoke 10 from rotating. At the same time, the nut is threadedly connected to the threaded cap 20, thereby realizing the connection between the spoke 10 and the rim 30.

[0035] The spokes 10 and rim 30 are made of carbon fiber, while the screw cap 20 and nut are metal parts. The spoke hole 31 on the rim 30 is a through hole used to connect and fix the spokes 10. One end of the spoke 10 is connected to the hub, and the other end is fixed to the screw cap 20. The screw cap 20 has a fixing part 22 at one end, which is connected and fixed to the spoke 10. The threaded part 21 of the screw cap 20 passes through the spoke hole 31 and is threadedly connected and fixed to the nut, thereby achieving the connection and fixation of the spokes 10 and the rim 30. Specifically, a fixing plane 221 is provided on the outer periphery of the fixing part 22 of the screw cap 20. When the screw cap 20 and the nut are threadedly engaged, the fixing tool 40 can engage with the fixing plane 221 to prevent the screw cap 20 and the spokes 10 from rotating together with the nut, while ensuring that the screw cap 20 and the nut are properly engaged, achieving an efficient and stable connection.

[0036] The threaded portion 21 and the fixing portion 22 are integrally formed. The threaded cap 20 is cylindrical in shape, with an axial through hole in its center for connection and fixation with the spokes 10. The fixing plane 221 is directly machined from the original circumferential side of the fixing portion 22 of the threaded cap 20. Therefore, no radial dimension of the fixing portion 22 is greater than the diameter of the threaded portion 21. This arrangement of the fixing plane 221 allows the end of the fixing portion 22 of the threaded cap 20 to fully extend into the spoke hole 31 without changing the spoke hole 31, the nut, or other structures. The fixing plane 221 is also fully placed within the spoke hole 31, and the fixing tool 40 extends into the spoke hole 31 to engage with the fixing plane 221. No extension structure is needed at the end of the fixing portion 22 of the threaded cap 20. This ensures that the size and weight of the threaded cap 20 do not increase (and even slightly reduces weight by machining a flat surface on the original basis). Furthermore, the wind resistance during riding is reduced because the fixing portion 22 is hidden within the spoke hole 31. Figure 6 , Figure 7As shown, there are two fixing planes 221, and the two fixing planes 221 are centrally symmetrically arranged. Since one end of the tooth cap 20 is already connected and fixed to the spoke 10, this arrangement of the fixing planes 221 facilitates the cooperation between the fixing tool 40 and the fixing planes 221, minimizing the influence of the spoke 10 on the fixing tool 40. Specifically, the distance between the fixing plane 221 and the axis of the tooth cap 20 can be adjusted according to requirements, such as... Figure 6 , Figure 7 The figures shown are schematic diagrams of two design embodiments of the dental cap 20, respectively, when the fixed plane 221 and the axis of the dental cap 20 are set at two different distances.

[0037] Cooperate Figures 1 to 5 As shown, the design of the fixing tool 40 is as follows: The fixing tool 40 is a fixing wrench, which includes a gripping part 41 and a locking part 42 located at one end of the gripping part 41. The locking part 42 has a corresponding groove 421 for locking the fixing part 22, and the inner wall of the groove 421 has a mating plane 422 that mates with the fixing plane 221. The outer surface of the locking part 42 is an arc surface adapted to the inner wall of the spoke hole 31.

[0038] In use, the holding part 41 is used to directly insert the engaging part 42 into the spoke hole 31. The mating plane 422 on the inner wall of the groove 421 corresponds to the fixing plane 221, and the arc surface of the outer side of the engaging part 42 fits perfectly with the inner wall of the spoke hole 31. After the engaging part 42 enters the spoke hole 31 and engages with the fixing plane 221, the plane's constraint prevents the nut 20 and spoke 10 from rotating within the spoke hole 31. After the fixing plane 221 is restricted, the other hand can use a tool to tighten the nut and the threaded portion 21 of the nut 20, thus connecting and fixing the spoke 10 to the rim 30. The operation is simple and convenient. Specifically, the engaging part 42 consists of two elastic clips extending outwards from the ends. The distance between the two elastic clips forms the groove 421, and the inner wall of the elastic clips is the mating plane 422.

[0039] The fixing tool 40 has a relief groove 43 on one side, which extends through both ends of the fixing tool 40 and is connected to the slot 421. The relief groove 43 and the slot 421 cooperate with the spoke 10 that is fixed to the toothed cap 20. The spoke 10 is accommodated in the relief groove 43 and the slot, so that the engaging part 42 can be inserted into the spoke hole 31 along the axial direction of the toothed cap 20 and the spoke hole 31, and the mating plane 422 can fit more snugly and firmly with the fixing plane 221.

[0040] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A spoke connection structure for a wheel rim, characterized in that: The wheel includes spokes, a toothed cap, a nut, and a rim. The rim has spoke holes. The toothed cap includes a threaded portion and a fixing portion. The threaded portion has external threads. One end of the toothed cap with the fixing portion is connected and fixed to the spokes. The outer periphery of the fixing portion has a fixing plane. The toothed cap is inserted into the spoke hole until the threaded portion extends out of the outer edge of the spoke hole and the end of the fixing portion is fully inserted into the spoke hole. A fixing tool extends into the spoke hole and cooperates with the fixing plane to prevent the toothed cap and spokes from rotating. At the same time, the nut is threadedly connected to the toothed cap, thereby realizing the connection between the spokes and the rim.

2. The spoke connection structure of a wheel rim as described in claim 1, characterized in that: The number of fixed planes is two, and the two fixed planes are arranged symmetrically at the center.

3. The spoke connection structure of a wheel rim as described in claim 1, characterized in that: The threaded part and the fixing part are integrally formed. The threaded part is cylindrical, and any radial dimension of the fixing part is not greater than the diameter of the threaded part.

4. The spoke connection structure of a wheel rim as described in claim 1, characterized in that: The fixing tool includes a gripping part and a locking part located at one end of the gripping part. The locking part has a corresponding locking groove for locking the fixing part, and the inner wall of the locking groove has a mating plane that mates with the fixing plane.

5. The spoke connection structure of a wheel rim as described in claim 4, characterized in that: The outer surface of the engaging part is an arc surface that fits the inner wall of the spoke hole.

6. The spoke connection structure of a wheel rim as described in claim 4, characterized in that: The fixing tool has a clearance groove on one side, which passes through both ends of the fixing tool and is connected to the slot.

7. The spoke connection structure of a wheel rim as described in claim 1, characterized in that: The spokes are carbon fiber spokes, the rim is a carbon fiber rim, and the nuts and bolts are metal parts.

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