Integrated wheel rim and wheel

Abstract

The utility model relates to an integrated wheel rim, which comprises a carbon fiber wheel rim and a spoke assembly. The spoke assembly comprises a plurality of groups of spoke strips. Each group of spoke strips comprises a first spoke main body, a second spoke main body and a cladding member. One end of the first spoke main body is provided with a first butt joint, one end of the second spoke main body is provided with a second butt joint, the first butt joint and the second butt joint are mutually spliced, and the cladding member is wound outside the first butt joint and the second butt joint and integrally formed and fixed. One end of the second spoke main body away from the second butt joint is provided with a connecting portion. The connecting portion is made of carbon fiber material. The connecting portion is attached to one side or both sides of the carbon fiber wheel rim and integrally formed with the carbon fiber wheel rim. The utility model also discloses a wheel. The carbon fiber wheel rim and the spoke main body are respectively produced and then integrally formed by splicing and assembling, thereby improving the yield of the integrated wheel rim.

Description

Technical Field

[0001] This utility model relates to the field of bicycle wheel technology, and in particular to an integrated rim and wheel. Background Technology

[0002] One-piece carbon fiber bicycle wheels offer numerous advantages. Firstly, they are remarkably lightweight. The low density of carbon fiber significantly reduces wheel weight, improving riding agility and speed, making them particularly suitable for climbing hills and high-speed riding. Secondly, they boast excellent strength and rigidity. Carbon fiber's high tensile strength prevents wheel deformation, allowing it to withstand significant impacts and ensuring riding stability and safety. It also precisely transmits power to the rider, reducing energy loss. Thirdly, they provide excellent shock absorption. The unique structure of carbon fiber absorbs vibrations from road bumps, reducing rider fatigue and improving riding comfort. Fourthly, they are highly corrosion-resistant. Carbon fiber is not easily corroded by rain or sweat, resulting in a long service life and low maintenance costs. Furthermore, their stylish and attractive appearance makes them highly recognizable, making them a top choice for many cycling enthusiasts.

[0003] One-piece carbon fiber wheels are highly favored by cyclists in the high-end bicycle market due to their superior performance, such as lightweight, high strength, and corrosion resistance. However, the "one-piece molding of wheel and spokes" process is becoming a core technological barrier restricting the large-scale development of the industry. This manufacturing method, which simultaneously molds the rim, spokes, and hub, breaks the traditional process logic of assembling metal wheels as separate parts ("rim-spoke-hub"), but it also brings problems such as high production and processing difficulty and low yield rate. Utility Model Content

[0004] The purpose of this invention is to provide a manufacturing process for integrated bicycle rims, wheels, and wheels, in order to solve the problems of high processing difficulty and low yield rate of integrated carbon fiber wheels.

[0005] To achieve the above objectives, this utility model discloses an integrated bicycle rim, comprising: a carbon fiber rim and a spoke assembly, wherein the spoke assembly comprises multiple spokes stacked together. Each set of spokes includes a first spoke body, a second spoke body, and a covering. Both the first and second spoke bodies are made of carbon fiber. One end of the first spoke body is provided with a first mating portion, and one end of the second spoke body is provided with a second mating portion. The first and second mating portions are spliced ​​together. The covering is made of fiber and is wound around the outside of the first and second mating portions and integrally formed and fixed. The end of the second spoke body away from the second mating portion is provided with a connecting portion, which is made of carbon fiber material. The connecting portion is attached to one or both sides of the carbon fiber rim and is integrally formed with the carbon fiber rim.

[0006] Preferably, the connecting part includes two oppositely arranged carbon fiber sheets, which are respectively attached to both sides of the carbon fiber rim and integrally formed with the carbon fiber rim.

[0007] Preferably, the carbon fiber sheet is fan-shaped, and the second spoke body is fixedly connected to the central angle of the carbon fiber sheet. The angle of the central angle is α, and the value of α ranges from 20 to 40 degrees.

[0008] Preferably, the first spoke body is composed of a central arc segment and two straight segments. The central arc segment is used to connect with the hub, and the two straight segments extend from both ends of the central arc segment. The ends of the two straight segments are provided with the first mating portion.

[0009] Preferably, the cross-sectional area of ​​the first docking portion is smaller than the cross-sectional area of ​​the first spoke body, and the cross-sectional area of ​​the second docking portion is smaller than the cross-sectional area of ​​the second spoke body; the first docking portion includes a first docking groove opened along the length direction of the first spoke body, and the second docking portion includes a second docking groove opened along the length direction of the second spoke body, and the first docking groove and the second docking groove cooperate with each other.

[0010] Preferably, the carbon fiber sheet is carbon cloth.

[0011] Preferably, after the first spoke body and the second spoke body are spliced ​​together, the carbon fibers of the first spoke body and the second spoke body have the same direction; the covering is made of carbon fiber, and the carbon fiber direction of the covering is the same as that of the first spoke body and / or the second spoke body.

[0012] A wheel includes a hub and an integral rim, the hub including a hub body and flanges disposed at both ends of the hub body, the first spoke body being fixedly mounted on the flanges.

[0013] Preferably, the hub body and the flange are separate components, the hub body is made of metal, the flange is made of carbon fiber, and the first spoke body and the flange are integrally formed.

[0014] This utility model has the following beneficial effects:

[0015] 1. This utility model divides the spoke assembly into a first spoke body, a second spoke body, and a covering. The second spoke body is first integrally formed with the carbon fiber rim, which improves the strength of the connection between the spoke assembly and the rim. Then the first spoke body and the second spoke body are assembled, which reduces the production difficulty and improves the yield rate.

[0016] 2. The carbon fiber orientation of the cladding is the same as that of the first and second spoke bodies. When subjected to stress, the three can be regarded as "different segments of the same fiber bundle", and the load can be continuously transmitted along the fiber axis, avoiding stress concentration or load interruption caused by mismatch in fiber orientation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the wheel provided in a specific embodiment of the present utility model;

[0018] Figure 2 This is a partially enlarged schematic diagram of point A provided in a specific embodiment of this utility model;

[0019] Figure 3 This is a schematic diagram of the connection between the first spoke body and the flange in a specific embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the first spoke body provided in a specific embodiment of the present utility model;

[0021] Figure 5 This is a partially enlarged schematic diagram of point B provided in a specific embodiment of this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the second spoke provided in a specific embodiment of the present utility model;

[0023] Figure 7 This is a partially enlarged schematic diagram of point C provided in a specific embodiment of this utility model;

[0024] Figure 8 This is an exploded view of the spokes provided in a specific embodiment of the present utility model;

[0025] Figure 9 An exploded view of the integrated wheel rim provided in a specific embodiment of this utility model;

[0026] Figure 10 This is a schematic diagram of the wheel rim structure provided in a specific embodiment of the present utility model;

[0027] Figure 11 This is an overall schematic diagram provided in a specific embodiment of the present utility model;

[0028] Figure 12 This is a schematic diagram of the wheel rim structure provided in a specific embodiment of the present utility model;

[0029] Figure 13 This is a partially enlarged schematic diagram of point D provided in a specific embodiment of this utility model;

[0030] Figure 14This is a schematic diagram of the overall structure provided in a specific embodiment of the present utility model.

[0031] Explanation of symbols for main components:

[0032] 100, First spoke body; 101, Straight section; 102, Curved section; 110, First mating part; 111, First mating groove; 200, Second spoke body; 210, Second mating part; 211, Second mating groove; 220, Connecting part; 300, Covering part; 400, Wheel rim; 500, Hub body; 600, Flange. Detailed Implementation

[0033] 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.

[0034] like Figures 1-14 This utility model provides an integrated bicycle rim, comprising: a carbon fiber rim and a spoke assembly, the spoke assembly being composed of several sets of spokes stacked together. Each set of spokes includes a first spoke body 100, a second spoke body 200, and a covering 300. Both the first spoke body 100 and the second spoke body 200 are made of carbon fiber. One end of the first spoke body 100 is provided with a first mating portion 110, and one end of the second spoke body 200 is provided with a second mating portion 210. The first mating portion 110 and the second mating portion 210 are spliced ​​together. The covering 300 is made of fiber. After the first spoke body 100 and the second spoke body 200 are spliced ​​together, their carbon fiber orientations are the same. Figure 13 In this embodiment, the covering 300 is made of carbon fiber, and the carbon fiber orientation of the covering 300 is the same as that of the first spoke body 100 and / or the second spoke body 200. When the carbon fiber orientations of the first and second spoke bodies 200 and the covering 300 are consistent, they can be regarded as "different segments of the same fiber bundle" when subjected to force, and the load can be continuously transmitted along the fiber axis, avoiding stress concentration or load interruption caused by mismatch in fiber orientation.

[0035] like Figure 13 , 14The covering 300 is wound around the outside of the first mating portion 110 and the second mating portion 210 and integrally formed and fixed. That is, after the first mating portion 110 and the second mating portion 210 are spliced, the covering 300 is wrapped around the mating point for initial fixation. Then, the first spoke body 100, the second spoke body 200, and the covering 300 are integrally formed. A connecting portion 220 is provided at the end of the second spoke body 200 away from the second mating portion 210. The connecting portion 220 includes two oppositely arranged carbon fiber sheets. The carbon fiber sheets are carbon cloth and are fan-shaped. The second spoke body 220 is fixedly connected to the rounded corner of the carbon fiber sheets. The angle of this rounded corner is α, and the value of α ranges from 20 to 40 degrees. The two carbon fiber sheets are respectively attached to both sides of the carbon fiber rim and integrally formed with the carbon fiber rim.

[0036] In this embodiment, the one-piece rim is divided into a first spoke body 100, a second spoke body 200, and a carbon fiber rim. During production, the first spoke body 100, the second spoke body 200, and the carbon fiber rim can be manufactured separately before being integrated into a single unit. Compared to traditional one-piece carbon fiber wheels, where a defect in the rim or even just one spoke renders the entire wheel unqualified, this application manufactures the spokes and rim separately. Only qualified spokes and rims are selected for integrated molding, significantly improving the yield rate of the one-piece carbon fiber wheel.

[0037] like Figure 4 The first spoke body 100 consists of a central arc segment and two straight segments. The central arc segment connects to the hub, and the two straight segments extend from both ends of the central arc segment, forming an "arch-shaped" structure, similar to an arch beam in a bridge. When subjected to vertical loads, the bending stiffness of the arc segment and the tensile stiffness of the straight segments work synergistically. Each of the two straight segments has a first mating part 110 at its end. As the rotation center of the wheel, the hub's connecting part 220 must withstand complex torque, axial force, and radial force. The curvature design of the central arc segment fits snugly against the circumferential surface of the hub, forming surface contact rather than point contact, distributing the localized load over a larger area.

[0038] like Figures 4-7The cross-sectional area of ​​the first mating portion 110 is smaller than that of the first spoke body 100, and the cross-sectional area of ​​the second mating portion 210 is smaller than that of the second spoke body 200. When the covering 300 is wrapped around the outside of the first mating portion 110 and the second mating portion 210, it just fills the groove formed by the first mating portion 110 and the second mating portion 210, making the spoke surface integrally formed by the first spoke body 100 and the second spoke body 200 smooth and flat. The first mating portion 110 includes a first mating groove 111 opened along the length direction of the first spoke body 100, and the second mating portion 210 includes a second mating groove 211 opened along the length direction of the second spoke body 200. The first mating groove 111 and the second mating groove 211 cooperate with each other.

[0039] This utility model also discloses a wheel, including a flange 600 and an integrated rim 400. A first spoke body 100 is fixedly mounted on the flange 600, which is made of carbon fiber. The first spoke body 100 and the flange 600 can be fixedly connected by adhesive or integrally formed with the flange 600. The wheel also includes a hub body 500, which is the part connecting the wheel to the wheel axle. The flange 600 is fixedly connected to the hub body 500 or detachably connected. In this embodiment, the flange 600 can be a carbon fiber spoke disc disclosed in publication number CN222946452U.

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

Claims

1. A one-piece bicycle wheel, characterized in that, include: Carbon fiber rim and spoke assembly, wherein the spoke assembly comprises multiple stacked spokes; Each set of spokes includes a first spoke body, a second spoke body, and a cover. Both the first spoke body and the second spoke body are made of carbon fiber. One end of the first spoke body is provided with a first mating part, and one end of the second spoke body is provided with a second mating part. The first mating part and the second mating part are spliced ​​together. The cover is made of fiber and is wound around the outside of the first mating part and the second mating part and integrally formed and fixed. The second spoke body has a connecting part at one end away from the second mating part. The connecting part is made of carbon fiber material and is attached to one or both sides of the carbon fiber rim, and is integrally formed with the carbon fiber rim.

2. The integrated wheel rim as described in claim 1, characterized in that: The connecting part includes two oppositely arranged carbon fiber sheets, which are respectively attached to both sides of the carbon fiber rim and integrally formed with the carbon fiber rim.

3. The integrated wheel rim according to claim 2, characterized in that: The carbon fiber sheet is fan-shaped, and the second spoke body is fixedly connected to the central angle of the carbon fiber sheet. The angle of the central angle is α, and the value of α ranges from 20 to 40 degrees.

4. The integrated wheel rim according to any one of claims 1 to 3, characterized in that: The first spoke body is composed of a central arc segment and two straight segments. The central arc segment is used to connect with the hub. The two straight segments extend from both ends of the central arc segment. The ends of the two straight segments are provided with the first mating part.

5. The integrated wheel rim according to any one of claims 1 to 3, characterized in that: The first docking part includes a first docking groove opened along the length direction of the first spoke body, and the second docking part includes a second docking groove opened along the length direction of the second spoke body, and the first docking groove and the second docking groove cooperate with each other.

6. The integrated wheel rim according to claim 5, characterized in that: After the first spoke body and the second spoke body are spliced ​​together, their carbon fibers have the same orientation; the covering is made of carbon fiber, and the carbon fiber orientation of the covering is the same as that of the first spoke body and / or the second spoke body.

7. A wheel, characterized in that: The wheel includes a hub and an integral rim as described in any one of claims 1-6, wherein the hub includes a hub body and flanges disposed at both ends of the hub body, and the first spoke body is fixedly mounted on the flanges.

8. A wheel according to claim 7, characterized in that: The hub body and flange are separate components. The hub body is made of metal, and the flange is made of carbon fiber. The first spoke body and flange are integrally formed or glued together by adhesive.

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