A bicycle wheel

Abstract

The utility model discloses a bicycle rim, including main circle body and set up two opposite setting of the hook edge of main circle body, the main circle body is triangle structure, and the height and width ratio of main circle body is 1:1.8 2.4, the main circle body includes the outer circle body of V shape and the inner circle body of the opening one side of connecting in the outer circle body, the outer circle body includes first connecting part, second connecting part and third connecting part, the second connecting part is arc structure, the outer circle body is based on the symmetry of second connecting part's central axis and arranges, first connecting part and third connecting part set up respectively in the both sides of second connecting part, the thickness of first connecting part and third connecting part gradually increases from one end to the other end with second connecting part connects, the thickness of second connecting part gradually reduces from central axis to both ends. The utility model discloses a bicycle rim adopts triangle structure, reduces the rim cost, and improves the rim stability.

Description

Technical Field

[0001] This utility model relates to the field of bicycle accessories technology, specifically to a bicycle rim. Background Technology

[0002] Bicycle rims are a crucial component of bicycle wheels, responsible for supporting the wheel, connecting to the axle, and providing rotation. The design and materials of the rims not only affect the bicycle's performance and riding experience but also its overall weight and durability. There are various types of rims, typically including front rims, rear rims, one-piece rims, and adjustable rims. Based on the materials used, common rim types include aluminum alloy, carbon fiber, and steel. High-quality rims play a key role in the riding experience, affecting not only riding comfort and handling but also the overall transmission efficiency and responsiveness. Choosing the right rims and their configuration can significantly improve the vehicle's performance.

[0003] Patent CN219505771U discloses a carbon fiber bicycle rim, including a rim body and a tire groove. Tire bead locks are symmetrically arranged on both sides of the tire groove, tilting towards the center of the groove. Several protrusions are provided on the inner wall of the tire bead locks. Patent CN213441893U discloses a deformation-resistant bicycle rim, including an inner ring and an outer ring. The inner ring has curved portions at both ends; the curved portions and the outer ring form a tire limiting groove; the outer ring has an inner tire support portion on its outer side, with a U-shaped cross-section and an arc-shaped top surface; a support portion is provided on the inner side of the outer ring. The bicycle rims in the above patents all use a near-elliptical shape, which, while offering high strength, also increases cost. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, this utility model provides a bicycle rim that adopts a triangular structure, which reduces the cost of the rim and improves its stability.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A bicycle rim includes a main rim body and two oppositely arranged hook edges on the main rim body. The main rim body has a triangular-like structure, and the height-to-width ratio of the main rim body is 1:1.8-2.4. The main rim body includes a V-shaped outer rim body and an inner rim body connected to the open side of the outer rim body. The outer rim body includes a first connecting part, a second connecting part, and a third connecting part. The second connecting part has an arc-shaped structure. The outer rim body is symmetrically arranged based on the central axis of the second connecting part. The first connecting part and the third connecting part are respectively arranged on both sides of the second connecting part. The thickness of the first connecting part and the third connecting part gradually increases from the end connected to the second connecting part to the other end, and the thickness of the second connecting part gradually decreases from the central axis to both ends.

[0007] As a further improvement to the above technical solution, the height of the main ring body is 11-20.5mm, and the length of the main ring body is 26-42mm.

[0008] As a further improvement to the above technical solution, the thickness at the central axis of the second connecting part is 2-3 mm.

[0009] As a further improvement to the above technical solution, the inner ring body includes a first straight portion, an arc-shaped portion, and a second straight portion. The arc-shaped portion is recessed towards the outer ring body. The inner ring body is symmetrically arranged based on the central axis of the arc-shaped portion, and the central axis of the arc-shaped portion is coaxial with the central axis of the second connecting portion. The first straight portion and the second straight portion are respectively connected to both sides of the arc-shaped portion. The first straight portion is connected to the first connecting portion, and the second straight portion is connected to the second connecting portion. The two hook edges are respectively provided at the connection between the first straight portion and the first connecting portion and at the connection between the second straight portion and the second connecting portion.

[0010] As a further improvement to the above technical solution, a first protrusion is provided at the end of the first straight portion away from the hook edge, and a second protrusion is provided at the end of the second straight portion away from the hook edge.

[0011] As a further improvement to the above technical solution, a first groove is provided on the first straight portion, the first groove being located between the first protrusion and the hook edge, and a second groove is provided on the second straight portion, the second groove being located between the second protrusion and the hook edge.

[0012] As a further improvement to the above technical solution, the inner surfaces of the two hook edges are perpendicular to the first straight portion and the second straight portion, respectively, and the outer surfaces of the two hook edges are inclined inward.

[0013] As a further improvement to the above technical solution, the outer side of the hook has an inclination angle of 0-5°.

[0014] As a further improvement to the above technical solution, the thickness of the hook edge near the main body is 1.5-4mm, and the thickness of the other end of the hook edge is 1.3-3mm.

[0015] The beneficial effects of this utility model are: 1. The cross-section of the rim is designed to resemble a triangle, which can reduce weight, lower material costs, and increase the stability of the rim. 2. Because the thickness of the first and third connecting parts gradually increases from the end connected to the second connecting part to the other end, and the thickness of the second connecting part gradually decreases from the central axis to both ends, the outer rim body has a gradient design that is thinner in the middle and thicker at both ends, further reducing the weight of the rim. It makes the parts with less stress gradually thinner and the parts with more stress gradually thicker, achieving lightness without sacrificing strength. In addition, the thickness of the connection between the rim and the lip cap (the middle position of the second connecting part) is increased, reducing the probability of the rim being torn by the lip cap, reducing the defect rate, and improving the stability of the rim. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a cross-sectional schematic diagram of a bicycle rim according to the present invention;

[0018] Figure 2 yes Figure 1 A magnified view of part A in the image;

[0019] Figure 3 yes Figure 1 A magnified view of part B in the image;

[0020] Figure 4 yes Figure 1 Dimensioning diagram.

[0021] Reference numerals: 110, first connecting part; 120, second connecting part; 130, third connecting part; 150, first straight part; 151, first protrusion; 152, first groove; 160, arc-shaped part; 170, second straight part; 171, second protrusion; 172, second groove; 180, first hook edge; 190, second hook edge. Detailed Implementation

[0022] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / connections involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. For example, fixed connections / fixed installations can use screw connections, bolt connections, pin connections, key connections, adhesive connections, mortise and tenon connections, welding, riveting, etc., as needed. For detachable connections, screw connections, bolt connections, threaded connections, snap-fit ​​connections, mortise and tenon connections, Velcro connections, etc., can be used as needed. The various technical features in this utility model can be combined interactively without contradicting each other.

[0023] Reference Figures 1-4 This utility model provides a bicycle rim, including a main rim body and two opposing first hook edges 180 and second hook edges 190 disposed on the main rim body. The main rim body has a triangular-like structure, and the height-to-width ratio of the main rim body is 1:1.8-2.4. Specifically, refer to... Figure 4 The height L3 of the main rim is 11-20.5mm, and the outer width L1 of the main rim is 26-42mm. Preferably, the height L3 of the main rim is 17.5mm, and the outer width L1 of the main rim is 36mm. Therefore, the height-to-width ratio of the main rim is approximately 1:2.06, and the inner width L10 of the bicycle rim is 22-32mm, preferably 30mm. Compared to existing rim structures, the triangular-shaped main rim structure in this embodiment reduces weight, lowers material costs, and improves stability (the physical properties of a triangle have a stabilizing effect).

[0024] In this embodiment, refer to Figure 1 and Figure 4The main ring body includes a V-shaped outer ring body and an inner ring body connected to the opening side of the outer ring body. The outer ring body includes a first connecting part 110, a second connecting part 120, and a third connecting part 130. The first connecting part 110, the second connecting part 120, and the third connecting part 130 are all arc-shaped structures. Specifically, the inner radius R1 of the second connecting part 120 is 10-12mm, preferably 11.24mm, the outer radius R2 of the second connecting part 120 is 8.5-10mm, preferably 9.35mm, and the thickness H6 of the central axis of the second connecting part 120 is 2-3mm, preferably 2.2mm. The outer ring is symmetrically arranged based on the central axis of the second connecting portion 120. The first connecting portion 110 and the third connecting portion 130 are respectively disposed on both sides of the second connecting portion 120. The thickness of the first connecting portion 110 and the third connecting portion 130 gradually increases from the end connected to the second connecting portion 120 to the other end, and the thickness of the second connecting portion 120 gradually decreases from the central axis to both ends. Specifically, refer to... Figure 4 As shown, H1 is 1.4±0.5mm (preferably 1.4mm), H2 is 1.29±0.5mm (preferably 1.29mm), H3 is 1.2±0.5mm (preferably 1.2mm), H4 is 1.12±0.5mm (preferably 1.12mm), and H5 is 1.25±0.5mm (preferably 1.25mm).

[0025] It can be understood that, through the above settings, the outer rim can be designed with a gradual transition from thinner in the middle to thicker at both ends, further reducing the weight of the rim. The rim is made thinner in areas with less stress and thicker in areas with greater stress, achieving both lightness and strength. In addition, the thickness H6 at the center axis of the second connecting part 120 (the connection between the rim and the spoke) is increased to 2-3mm (compared to the usual 1.5-1.6mm), reducing the chance of the rim being torn by the spoke, reducing the defect rate, and improving the stability of the rim.

[0026] In this embodiment, refer to Figure 1 and Figure 4The inner ring body includes a first straight portion 150, an arc-shaped portion 160, and a second straight portion 170. The arc-shaped portion 160 is recessed towards the outer ring body, making tire installation and removal more convenient, less strenuous, and faster. The inner ring body is symmetrically arranged based on the central axis of the arc-shaped portion 160, and the central axis of the arc-shaped portion 160 is coaxial with the central axis of the second connecting portion 120. The first straight portion 150 and the second straight portion 170 are respectively connected to both sides of the arc-shaped portion 160. The first straight portion 150 is connected to the first connecting portion 110, and the second straight portion 170 is connected to the second connecting portion 120. The first hook edge 180 is disposed at the connection between the first straight portion 150 and the first connecting portion 110, and the second hook edge 190 is disposed at the connection between the second straight portion 170 and the third connecting portion 130.

[0027] In the preferred embodiment, refer to Figure 2 and Figure 3 The first straight portion 150 has a first protrusion 151 at the end away from the first hook edge 180, and the second straight portion 170 has a second protrusion 171 at the end away from the second hook edge 190. The distance between the first protrusion 151 and the first hook edge 180 is 3mm-6mm, preferably 6mm. The distance L2 between the second protrusion 171 and the second hook edge 190 is 3mm-6mm, preferably 6mm. The first protrusion 151 and the second protrusion 171 are arc-shaped protrusions, and the width L9 of the arc-shaped protrusions is 0.5-3mm, preferably 1mm. The first protrusion 151 and the second protrusion 171 can also be square protrusions, and the width of the square protrusions is 0.5-3mm, preferably 1mm. The height L6 of the first protrusion 151 and the second protrusion 171 is 0.3-1mm, preferably 0.5mm. This increases the airtightness of the tire (including tubeless tires and non-tubeless tires), making the tire more stable and less prone to air leakage.

[0028] In the preferred embodiment, refer to Figure 2 and Figure 3 The first flat portion 150 is provided with a first groove 152, which is located between the first protrusion 151 and the first hook edge 180. The second flat portion 170 is provided with a second groove 172, which is located between the second protrusion 171 and the second hook edge 190. Correspondingly, the length of the first groove 152 and the second groove 172 is 3mm-6mm, preferably 6mm, and the depth is 0.3-1.5mm, preferably 0.5mm. This makes it difficult for the tire to fall off after installation at the inner edge of the tire. When encountering uncontrollable factors such as tire leakage during riding, it can ensure that the outer tire is not easily detached, thereby protecting the rim from damage and reducing losses (replacing the rim is more expensive than replacing the tire).

[0029] In this embodiment, refer to Figure 4 The inner surface of the first hook edge 180 is perpendicular to the first straight portion 150, and the inner surface of the second groove edge 190 is perpendicular to the second straight portion 170. The outer surfaces of both hook edges are inclined inwards at an angle θ of 0-5°, preferably 3°. This reduces wind resistance during riding, increases aerodynamics, accelerates riding speed, and provides additional stiffness and stability to the third point. The height L4 of the first hook edge 180 and the second hook edge 190 is 4-7.5m. The thickness of the first hook edge 180 and the second hook edge 190 near the main rim body is 1.5-4mm, preferably 2.01mm, and the thickness of the other end of the first hook edge 180 and the second hook edge 190 is 1.3-3mm, preferably 1.7mm. Within this range, the defect rate of hook edge folding and concave deformation during riding can be reduced, the quality stability of the rim can be improved, and the hardness and stability of the hook edge of the rim can be increased by about 30-40% compared with the conventional method.

[0030] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A bicycle rim, comprising a main rim body and two oppositely disposed hook edges on the main rim body, characterized in that: The main ring body has a triangular structure, and the height to width ratio of the main ring body is 1:1.8-2.

4. The main ring body includes a V-shaped outer ring body and an inner ring body connected to the opening side of the outer ring body. The outer ring body includes a first connecting part, a second connecting part, and a third connecting part. The second connecting part has an arc-shaped structure. The outer ring body is symmetrically arranged based on the central axis of the second connecting part. The first connecting part and the third connecting part are respectively arranged on both sides of the second connecting part. The thickness of the first connecting part and the third connecting part gradually increases from the end connected to the second connecting part to the other end, and the thickness of the second connecting part gradually decreases from the central axis to both ends.

2. The bicycle rim according to claim 1, characterized in that: The height of the main ring is 11-20.5mm, and the outer width of the main ring is 26-42mm.

3. A bicycle rim according to claim 2, characterized in that: The thickness at the axis of the second connecting part is 2-3mm.

4. A bicycle rim according to claim 1, characterized in that: The inner ring body includes a first straight portion, an arc-shaped portion, and a second straight portion. The arc-shaped portion is recessed towards the outer ring body. The inner ring body is symmetrically arranged based on the central axis of the arc-shaped portion, and the central axis of the arc-shaped portion is coaxial with the central axis of the second connecting portion. The first straight portion and the second straight portion are respectively connected to the two sides of the arc-shaped portion. The first straight portion is connected to the first connecting portion, and the second straight portion is connected to the second connecting portion. The two hook edges are respectively provided at the connection between the first straight portion and the first connecting portion and at the connection between the second straight portion and the second connecting portion.

5. A bicycle rim according to claim 4, characterized in that: The first straight portion has a first protrusion at the end away from the hook edge, and the second straight portion has a second protrusion at the end away from the hook edge.

6. A bicycle rim according to claim 5, characterized in that: The first straight portion is provided with a first groove, which is located between the first protrusion and the hook edge. The second straight portion is provided with a second groove, which is located between the second protrusion and the hook edge.

7. A bicycle rim according to claim 6, characterized in that: The inner surfaces of the two hook edges are perpendicular to the first straight portion and the second straight portion, respectively, and the outer surfaces of the two hook edges are inclined inward.

8. A bicycle rim according to claim 7, characterized in that: The outer side of the hook has an inclination angle of 0-5°.

9. A bicycle rim according to claim 8, characterized in that: The thickness of the hook edge near the main body is 1.5-4mm, and the thickness of the other end of the hook edge is 1.3-3mm.

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