Lightweight single-layer rim of bicycle

Abstract

The utility model discloses a light-weight single-layer rim of a bicycle, which relates to the technical field of bicycle accessories and comprises a first bottom wall, the first bottom wall is bent into a circular ring shape in an arc mode, joint faces which are correspondingly connected are formed at two ends of the first bottom wall, and second bottom walls which obliquely extend towards the outer side are arranged on two sides of the first bottom wall. Side walls perpendicular to the second bottom walls are arranged on the sides, away from the first bottom wall, of the two second bottom walls, first flanges are fixedly connected to the joints of the second bottom walls and the side walls, second flanges are fixedly connected to the joints of the second bottom walls and the two sides of the first bottom wall, and a reinforcing module is arranged on the inner side of the first bottom wall; the triangular flanges, the first flanges and the second flanges are additionally arranged on the single-layer rim, the strength of the rim is improved, the triangular flanges are hollowed out, the weight of the rim is further reduced, and it is guaranteed that the weight of the rim is light; the connecting rods are additionally arranged on the connecting faces of the wheel rims, after the wheel rims are welded, the connecting rods can improve the strength of the connecting positions, and breakage is reduced.

Description

Technical Field

[0001] This utility model relates to the field of bicycle parts technology, specifically a lightweight single-layer bicycle rim. Background Technology

[0002] Lightweighting is a goal pursued by bicycle manufacturers today. In addition to lightweighting the frame, bicycle rims also need to be lightweight. Bicycle rims mainly provide tire fixation and allow the tire to make stable contact with the ground and move forward. Since bicycles are prone to up-and-down vibrations due to uneven road surfaces when riding on the road, the structural strength of the rim is related to the stability and safety of the bicycle when riding, and is just as important as the lightweighting of the rim.

[0003] While most existing bicycle rims feature a U-shaped cross-section to enhance rigidity, this structure is typically a two-layer design, making manufacturing complex and assembly cumbersome. Most importantly, it increases the overall weight of the bicycle, failing to meet cyclists' demands for lightweight construction. Furthermore, the current rim manufacturing process involves bending the rim and welding the two ends together. This method inevitably introduces gaps at the joints, resulting in poor overall rim performance. Under strong impacts or repeated collisions, rims are prone to breakage at the joints, posing significant safety hazards. Therefore, improvements are necessary.

[0004] Based on this, a lightweight single-layer bicycle rim is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0005] The purpose of this invention is to provide a lightweight single-layer bicycle rim to solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A lightweight single-layer bicycle rim includes: a first bottom wall, which is curved into a ring shape with corresponding mating surfaces at both ends; second bottom walls extending outwardly on both sides of the first bottom wall; side walls perpendicular to the second bottom walls on the side away from the first bottom wall; a first flange fixedly connected at the connection between the second bottom wall and the side wall; second flanges fixedly connected at the connection between the second bottom wall and the two sides of the first bottom wall; and a reinforcing module on the inner side of the first bottom wall.

[0008] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0009] In one alternative: the reinforcing module includes six triangular flanges, which are fixedly connected to the inner side of the first bottom wall, and the interior of the six triangular flanges is hollowed out.

[0010] In one alternative: four connecting rods are provided at the mating surface, and the first flange and the second flange are provided with connecting holes at the mating surface, and the two ends of the connecting rods are inserted into the connecting holes.

[0011] In one alternative: the first bottom wall is provided with a plurality of spoke connection holes.

[0012] In one alternative: the outer edge of the sidewall extends inward to form a retaining ring.

[0013] In one alternative: the first bottom wall, the second bottom wall, and the side walls are made of aluminum alloy.

[0014] In one alternative: the distance between the inner edges of the two sidewalls is a = 50 mm.

[0015] In one alternative: the thickness of the first bottom wall is b = 1 mm.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention employs a single-layer wheel rim and adds a triangular flange, a first flange, and a second flange to the single-layer rim. This increases the strength of the wheel rim while ensuring its lightweight design. Furthermore, the triangular flange is designed with a hollowed-out shape to further reduce the weight of the wheel rim. By adding a connecting rod to the joint surface of the wheel rim, the connecting rod can increase the strength of the joint after the wheel rim is welded, reducing the occurrence of breakage. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a structural schematic diagram of the connecting rod of this utility model.

[0020] Figure 3 This is a structural schematic diagram of the cross-section of this utility model.

[0021] Reference numerals in the attached drawings: 100, first bottom wall; 101, mating surface; 102, spoke connection hole; 200, second bottom wall; 201, first flange; 202, second flange; 300, side wall; 301, retaining ring; 400, triangular flange; 500, connecting rod; 501, connecting hole. Detailed Implementation

[0022] 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.

[0023] In one embodiment, such as Figures 1-3 As shown, a lightweight single-layer bicycle rim includes a first bottom wall 100, which is curved into a ring shape with corresponding mating surfaces 101 at both ends. Second bottom walls 200 extending outwards are provided on both sides of the first bottom wall 100. A side wall 300 perpendicular to the second bottom wall 200 is provided on the side of the two second bottom walls 200 away from the first bottom wall 100. A first flange 201 is fixedly connected at the connection between the second bottom wall 200 and the side wall 300, and a second flange 202 is fixedly connected at the connection between the second bottom wall 200 and the two sides of the first bottom wall 100. A reinforcing module is provided on the inner side of the first bottom wall 100. By adding a first flange 201 at the connection between the second bottom wall 200 and the side wall 300, and adding a second flange 202 at the connection between the second bottom wall 200 and the two sides of the first bottom wall 100, the strength of the rim is increased. The strength of the rim is further increased by adding the reinforcing module.

[0024] In this embodiment, as Figure 2 As shown, the reinforcing module includes six triangular flanges 400, which are fixedly connected to the inner side of the first bottom wall 100. The interior of the six triangular flanges 400 is hollowed out. By utilizing the stability of triangles, the triangular flanges 400 are fixedly connected to the inner side of the first bottom wall 100, increasing the overall strength of the wheel rim. Furthermore, by hollowing out the triangular flanges 400, the weight of the wheel rim is reduced, achieving a lightweight design.

[0025] In one embodiment, such as Figure 2 As shown, four connecting rods 500 are provided at the mating surface 101. The first flange 201 and the second flange 202 are provided with connecting holes 501 at the mating surface 101. The two ends of the connecting rods 500 are inserted into the connecting holes 501. When welding the wheel rim, the connecting rods 500 are inserted into the connecting holes 501 to increase the strength of the connection and reduce the occurrence of breakage.

[0026] In one embodiment, such as Figure 1 As shown, the first bottom wall 100 is provided with a plurality of spoke connection holes 102, through which the wheel rim and spokes are connected.

[0027] In one embodiment, such as Figure 2 As shown, the outer edge of the sidewall 300 extends inward to form a retaining ring 301, through which the wheel rim and the tire are connected.

[0028] In one embodiment, such as Figure 1 As shown, the first bottom wall 100, the second bottom wall 200, and the side wall 300 are made of aluminum alloy. Aluminum alloy wheels are characterized by light weight, high strength, and corrosion resistance.

[0029] In one embodiment, such as Figure 3 As shown, the distance between the inner edges of the two sidewalls 300 is a=50mm, which effectively reduces the weight of the wheel rim while ensuring its rigidity and strength.

[0030] In one embodiment, such as Figure 3 As shown, the thickness of the first bottom wall 100 is b=1 mm, which effectively reduces the weight of the wheel rim while ensuring its rigidity and strength.

[0031] The above embodiment discloses a lightweight single-layer bicycle rim, wherein the rim is connected by welding during the forming process. By adding a connecting rod 500, the connecting rod 500 is inserted into the connecting hole 501 during the welding forming of the rim. The connecting rod increases the strength of the connection and reduces the occurrence of breakage. By adding a triangular flange 400, a first flange 201 and a second flange 202, the overall strength of the single-layer rim is increased. By hollowing out the triangular flange 400, the weight of the rim is reduced. The design achieves lightweight design while ensuring the overall strength of the rim.

[0032] The above description is merely a specific embodiment of this application, but the scope of protection of this application 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 application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A lightweight single-layer bicycle rim, characterized in that, The first bottom wall (100) is curved into a ring shape. The two ends of the first bottom wall (100) form corresponding joint surfaces (101). The first bottom wall (100) has second bottom walls (200) extending outward on both sides. The two second bottom walls (200) have side walls (300) perpendicular to the second bottom wall (200) on the side away from the first bottom wall (100). The second bottom wall (200) and the side wall (300) are fixedly connected to a first flange (201). The second bottom wall (200) and the two sides of the first bottom wall (100) are fixedly connected to a second flange (202). The inner side of the first bottom wall (100) is provided with a reinforcing module.

2. The lightweight single-layer bicycle rim according to claim 1, characterized in that, The reinforcing module includes six triangular flanges (400), which are fixedly connected to the inner side of the first bottom wall (100). The interior of the six triangular flanges (400) is hollowed out.

3. The lightweight single-layer bicycle rim according to claim 1, characterized in that, Four connecting rods (500) are provided at the joint surface (101). The first flange (201) and the second flange (202) are provided with connecting holes (501) at the joint surface (101). The two ends of the connecting rods (500) are inserted into the connecting holes (501).

4. A lightweight single-layer bicycle rim according to claim 1, characterized in that, The first bottom wall (100) is provided with a plurality of spoke connection holes (102).

5. A lightweight single-layer bicycle rim according to claim 1, characterized in that, The outer edge of the sidewall (300) extends inward to form a retaining ring (301).

6. A lightweight single-layer bicycle rim according to claim 1, characterized in that, The first bottom wall (100), the second bottom wall (200), and the side wall (300) are made of aluminum alloy.

7. A lightweight single-layer bicycle rim according to claim 1, characterized in that, The distance between the inner edges of the two sidewalls (300) is a = 50 mm.

8. A lightweight single-layer bicycle rim according to claim 1, characterized in that, The thickness of the first bottom wall (100) is b=1 mm.

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