Low-wind-resistance spoke structure
By designing the sloping wall and wing section of the aluminum alloy rod and combining it with carbon fiber reinforcement, the problem of high wind resistance in existing spokes was solved, achieving a low wind resistance and lightweight spoke structure that meets the performance requirements of high-end bicycles.
Patent Information
- Application Number
- CN202520425674.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-12
AI Technical Summary
Existing spoke structures have high wind resistance and cannot meet the requirements of low wind resistance and lightweight design for high-end bicycles. Furthermore, adding a tail wing to the structure is unstable and increases weight.
A low-drag spoke structure is designed, using an aluminum alloy rod with a sloping wall and a vane section. The thickness of the sloping wall gradually decreases, and the vane section gradually becomes thinner. It is combined with a carbon fiber filament layer to enhance durability, and a V-shaped guide section is used for transition to form a quadrangular prism structure to reduce wind resistance.
It effectively reduces wind resistance, improves bending strength, achieves lightweight design and enhanced stability, and meets the performance requirements of high-end bicycles.
Smart Images
Figure CN223850343U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to spoke technical field, concretely relates to a low wind resistance spoke structure. BACKGROUND
[0002] Spoke is a center or hub in the same plane outwardly extending many poles, rods or straight lines. At present, spoke is mostly round shaft alloy steel parts, and the modeling is single, and the production demand of low wind resistance and light weight cannot be met on some high-end bicycles. In order to reduce wind resistance, some designers will install strip tail wing pieces on the front and rear sides of spoke, but the structure is unstable, and the weight is increased, which affects cycling.
[0003] Therefore, a new structure is urgently needed, which can ensure sufficient strength and reduce wind resistance. CONTENT OF UTILITY MODEL
[0004] Therefore, the utility model wants to solve the technical problem to provide a low wind resistance spoke structure, avoids the single round bar of the previous spoke structure, and the trouble of high wind resistance.
[0005] In order to solve the above technical problem, the utility model discloses a low wind resistance spoke structure, comprising:
[0006] Spoke rod body, the elbow part is arranged at one end of spoke rod body, and the threaded part is arranged at the other end, and the threaded part is used for connecting spoke cap;Wherein the spoke rod body has the round shaft part close to the elbow part and the threaded part respectively and the main rod part connecting the round shaft part of two ends, the main rod part has the left-right symmetrical inclined wall part and the wing piece part extending on the edge of inclined wall part, the thickness of inclined wall part gradually reduces from the center line of main rod part to left and right sides, the wing piece part is symmetrical up and down, and has the arc towards the outside;Wherein, the extension length of the wing piece part on both sides is different.
[0007] According to the utility model one embodiment, wherein the above inclined wall part is about front and back symmetry, and the lowest thickness of edge is 2mm.
[0008] According to the utility model one embodiment, wherein the surface of the above round shaft part adheres carbon fiber silk layer through epoxy AB glue, and the thickness of carbon fiber silk layer is 2mm.
[0009] According to the utility model one embodiment, wherein the above round shaft part extends into the central part of inclined wall part through V-shaped guide part.
[0010] According to the utility model one embodiment, wherein the thickness of the above wing piece part gradually reduces from 2mm to 0mm from inclined wall part outward.
[0011] Compared with the prior art, the utility model can obtain the following technical effects:
[0012] The spoke rod body is formed by the round shaft part and the main rod part, the inclined wall part and the fin part are formed on the main rod part, the inclined wall part is in quadrangular prism shape, and the thickness of the two sides is gradually reduced, so that the bending resistance is improved and the wind resistance is reduced, and in addition, the edge continues to form the gradually thinned fin design, so that the wind resistance is reduced again and the performance is improved.
[0013] Of course, any product implementing the present application does not necessarily need to achieve all the technical effects described above. BRIEF DESCRIPTION OF DRAWINGS
[0014] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and together with the description serve to explain the present application. In the drawings:
[0015] Figure 1 is a low wind resistance spoke structure schematic diagram of the embodiment of the present application.
[0016] IDENTIFICATION OF DRAWINGS
[0017] Spoke rod body 10, elbow part 11, spoke cap 12, round shaft part 20, main rod part 30, inclined wall part 40, fin part 50. DETAILED DESCRIPTION
[0018] The implementation of the present application will be described in detail below with reference to the drawings and embodiments, so that the realization process of how the present application applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented.
[0019] Please refer to Figure 1 , Figure 1 is a low wind resistance spoke structure schematic diagram of the embodiment of the present application.
[0020] As shown in the figure, a low wind resistance spoke structure comprises: a spoke rod body 10, the spoke rod body 10 is provided with an elbow part 11 at one end and a threaded part at the other end, the threaded part is used for connecting a spoke cap 12; wherein the spoke rod body 10 has a round shaft part 20 close to the elbow part 11 and the threaded part respectively and a main rod part 30 connecting the two end round shaft parts 20, the main rod part has left-right symmetrical inclined wall parts 40 and fin parts 50 extending on the edges of the inclined wall parts 40, the thickness of the inclined wall parts 40 gradually decreases from the center line of the main rod part 30 to the left and right sides, the fin parts 50 are symmetrical upward and downward and have an outward arc; wherein the extension lengths of the fin parts 50 on the two sides are different.
[0021] In an embodiment of the present application, the spoke rod body 10 is an aluminum alloy rod, one end is provided with an elbow part 11 for connecting a hub, the other end is provided with a threaded part, and the threaded part is fixed to a rim in cooperation with a spoke cap 12, and the middle spoke rod body 10 completes the support. The round shaft part 20 and the main rod part 30 constitute the spoke rod body 10.
[0022] Specifically, the round shaft part 20 is located at both ends, connecting the elbow part 11 and the threaded part, and the middle main rod part 30 is symmetrical left and right, and the left and right directions correspond to the front and back directions of the wheel. The main rod part 30 is composed of the inclined wall part 40 and the fin part 50, wherein the inclined wall part 40 is inclined to both sides from the center line of the main rod part 30, that is, the thickness is continuously reduced, in a tapered shape, for reducing wind resistance. The fin part 50 extends from the end edge of the inclined wall part 40, and forms a piece-shaped structure with an arc outward again, similar to a tail fin, which can relatively increase the extension, so that the wind pressure transition is smoother, and the wind resistance is smaller.
[0023] The fin part 50 on the front and back sides has different extension lengths, and the fin part 50 on the front side of the wheel can be set to be longer, and the fin part 50 on the back side is slightly shorter, so that the front side wind cutting effect is increased, the wind resistance is reduced, the back end is contracted, and the transition is lightweight.
[0024] The inclined wall part 40 of the utility model is symmetrical about the front and back, that is, the left and right and the front and back are relatively symmetrical, in a four-rib structure, and the edge has a minimum thickness of 2 mm, facilitating the transition of the fin part 50.
[0025] Preferably, the thickness of the fin part 50 gradually reduces from 2 mm to 0 mm outward from the inclined wall part 40, that is, the thickness gradually changes, in a reducing shape, facilitating the reduction of wind resistance.
[0026] In addition, the surface of the round shaft part 20 is adhered with a carbon fiber wire layer through epoxy AB glue, and the thickness of the carbon fiber wire layer is 2 mm, for improving the strength of both ends and enhancing the durability. Further, the round shaft part 20 extends into the center of the inclined wall part 40 through the V-shaped guide part, and the transition is good.
[0027] In summary, the utility model forms the spoke rod body 10 through the round shaft part 20 and the main rod part 30, forms the inclined wall part 40 and the fin part 50 on the main rod part 30, the inclined wall part 10 is in a four-rib prism shape, and the thickness of both sides is gradually thin, improving the bending resistance and reducing the wind resistance, and the edge continues to form a gradually thin fin design, further reducing the wind resistance and improving the performance.
[0028] The above description shows and describes several preferred embodiments of the utility model, but as described above, it should be understood that the utility model is not limited to the forms disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified by the above teaching or related technical or knowledge within the scope of the utility model concept described herein. The modification and change made by the person skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the protection scope of the claims attached to the utility model.
Claims
1. A low wind resistance spoke structure comprising a spoke rod body, one end of which is provided with an elbow portion, and the other end of which is provided with a threaded portion for connecting a spoke cap; characterized in that, The spoke rod body has a round shaft part near the bend part and the thread part respectively, and a main rod part connecting the two round shaft parts, the main rod part has left-right symmetrical inclined wall parts and wing part extending on the edge of the inclined wall part, the thickness of the inclined wall part gradually decreases from the middle line of the main rod part to the left and right sides, the wing part is symmetrical up and down, and has an outward arc; the extension length of the wing part on both sides is different.
2. The low wind resistance spoke structure of claim 1, wherein The inclined wall part is symmetrical about front and back, and the edge has a minimum thickness of 2mm.
3. The low wind resistance spoke structure of claim 1, wherein The surface of the round shaft part is adhered with a carbon fiber wire layer by epoxy AB glue, and the thickness of the carbon fiber wire layer is 2mm.
4. The low wind resistance spoke structure of claim 1, wherein The round shaft part extends into the center of the inclined wall part through a V-shaped guide part.
5. The low wind resistance spoke structure of claim 2, wherein, The thickness of the wing part gradually decreases from 2mm to 0mm outward from the inclined wall part.