Wear-resistant bicycle rim

Abstract

The utility model belongs to the technical field of bicycle accessories, and discloses a wear-resistant bicycle rim which comprises a hub, spokes and a rim body, the rim body is provided with a brake contact surface, the brake contact surface is provided with assembly arc-shaped grooves which are arranged at equal intervals in the axial / circumferential direction of the rim body, and sectional wear-resistant parts are arranged in the assembly arc-shaped grooves; the sectional type wear-resisting part comprises a hard alloy base and an ultra-high molecular weight polyethylene wear-resisting piece detachably installed on the hard alloy base, the hard alloy base is matched with the assembling arc-shaped groove, and clamping grooves are symmetrically formed in the hard alloy base; and the ultra-high molecular weight polyethylene wear-resistant sheet is provided with clamping bulges respectively corresponding to the clamping grooves. By arranging the detachable and sectional type wear-resisting pieces, the service life of the wheel rim can be prolonged, meanwhile, the maintenance cost is reduced, when the wheel rim is locally abraded, only the corresponding ultra-high molecular weight polyethylene wear-resisting pieces need to be replaced, and resource waste caused by traditional overall replacement of the wheel rim is avoided.

Description

Technical Field

[0001] This utility model relates to the field of bicycle accessories technology, and in particular to a wear-resistant bicycle rim. Background Technology

[0002] A bicycle consists of steel rims (wheel rims) and a frame. The rolling of the steel rims drives the frame to move. When braking, the friction between the brakes on the frame and the steel rims generates resistance, causing the steel rims to stop rolling and thus stopping the bicycle from moving.

[0003] Traditional bicycle rims (especially spoked rims) wear down on the sides due to long-term friction with brake pads and road debris. Existing technologies often use integral quenching or surface plating, which are complex, costly, and irreparable once worn. Therefore, we propose a wear-resistant bicycle rim. Utility Model Content

[0004] In view of the problems of existing bicycle rims, such as complex manufacturing process, high cost and irreparable wear after wear, this utility model is proposed.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A wear-resistant bicycle rim includes a hub, spokes, and a rim body. The rim body has a brake contact surface, and the brake contact surface has mounting arc-shaped grooves that are equidistantly arranged along the axial / circumferential direction of the rim body. Segmented wear-resistant parts are provided in the mounting arc-shaped grooves.

[0007] The segmented wear-resistant component includes a cemented carbide base corresponding to the assembly arc groove and an ultra-high molecular weight polyethylene wear-resistant sheet detachably mounted on the cemented carbide base, wherein the cemented carbide base is adapted to the assembly arc groove.

[0008] As a technical solution for a wear-resistant bicycle rim according to this utility model, the hard alloy base has symmetrically arranged snap-fit ​​grooves, and the ultra-high molecular weight polyethylene wear-resistant sheet has integrally formed snap-fit ​​protrusions that correspond to the snap-fit ​​grooves respectively. The snap-fit ​​protrusions are adapted to the snap-fit ​​grooves, and the ultra-high molecular weight polyethylene wear-resistant sheet can be detachably installed on the hard alloy base through the snap-fit ​​protrusions and the snap-fit ​​grooves.

[0009] As a technical solution for a wear-resistant bicycle rim according to the present invention, the hard alloy base is divided into 6-8 segments at equal intervals along the axial / circumferential direction of the rim body, and each segment of the hard alloy base has a first neodymium iron boron magnet and a second neodymium iron boron magnet embedded at both ends.

[0010] As a technical solution for a wear-resistant bicycle rim according to the present invention, the first neodymium iron boron magnet and the second neodymium iron boron magnet are opposite magnetic poles, and the first neodymium iron boron magnet and the second neodymium iron boron magnet attract each other magnetically.

[0011] As a technical solution for a wear-resistant bicycle rim according to the present invention, the surface of the ultra-high molecular weight polyethylene wear-resistant sheet is provided with circumferentially and inclined anti-slip grooves, and the grooves are 0.5-1.2mm deep, 2-3mm wide, and 8-10mm apart.

[0012] As a technical solution for a wear-resistant bicycle rim according to this utility model, the anti-slip groove is inclined at 45° along the rim body towards the hub.

[0013] As a technical solution of the wear-resistant bicycle rim described in this utility model, the outer surface of the segmented wear-resistant part is coated with a fluorescent energy-storing coating, and the thickness of the fluorescent energy-storing coating is 50-80μm.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects:

[0015] 1. This utility model, by setting detachable and segmented wear-resistant parts, can extend the service life of the wheel rim and reduce maintenance costs. When local wear occurs, only the corresponding ultra-high molecular weight polyethylene wear-resistant sheet needs to be replaced, avoiding the resource waste caused by the traditional whole wheel rim replacement.

[0016] 2. This utility model, through the integration of composite functions such as magnetic fixation and anti-slip groove mechanical optimization, hard alloy base and ultra-high molecular weight polyethylene wear-resistant sheet material composite, and fluorescent energy storage coating intelligent prompt, improves braking performance while taking into account all-weather use safety and maintenance convenience. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

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

[0019] Figure 2 This is an exploded front view diagram of the segmented wear-resistant part and the rim body of this utility model.

[0020] Figure 3For the present utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0021] Figure 4 This is a side view of the disassembled structure of the segmented wear-resistant part and the rim body of this utility model.

[0022] Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point B.

[0023] Explanation of reference numerals in the attached figures:

[0024] In the diagram: 1. Hub; 2. Spokes; 3. Rim body; 301. Brake contact surface; 302. Assembly arc groove; 401. Hard alloy base; 4011. Snap-fit ​​groove; 402. Ultra-high molecular weight polyethylene wear-resistant sheet; 4021. Snap-fit ​​protrusion; 4022. Anti-slip groove; 403. First neodymium iron boron magnet; 404. Second neodymium iron boron magnet. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] Reference Figures 1-5 A wear-resistant bicycle rim is provided, which includes a hub 1, spokes 2 and rim body 3. The rim body 3 has a brake contact surface 301. The brake contact surface 301 is provided with mounting arc grooves 302 that are equidistantly arranged along the axial / circumferential direction of the rim body 3. Segmented wear-resistant parts are provided in the mounting arc grooves 302.

[0027] The segmented wear-resistant component includes a cemented carbide base 401 corresponding to the mounting arc groove 302 and an ultra-high molecular weight polyethylene wear-resistant sheet 402 detachably mounted on the cemented carbide base 401. The cemented carbide base 401 is adapted to the mounting arc groove 302. In application, through the combined design of the segmented wear-resistant component (cemented carbide base 401 and ultra-high molecular weight polyethylene wear-resistant sheet 402), the wear resistance of the brake surface is improved while the function of partial replacement is realized. At the same time, the cemented carbide base 401 provides support strength, while the ultra-high molecular weight polyethylene wear-resistant sheet 402 reduces the coefficient of friction.

[0028] Reference Figures 1-5The hard alloy base 401 has symmetrically arranged snap-fit ​​grooves 4011, and the ultra-high molecular weight polyethylene wear-resistant sheet 402 has integrally formed snap-fit ​​protrusions 4021 that correspond to the snap-fit ​​grooves 4011. The snap-fit ​​protrusions 4021 and the snap-fit ​​grooves 4011 are adapted to each other. The ultra-high molecular weight polyethylene wear-resistant sheet 402 can be detachably installed on the hard alloy base 401 through the snap-fit ​​protrusions 4021 and the snap-fit ​​grooves 4011. In application, the snap-fit ​​structure design makes the replacement of the ultra-high molecular weight polyethylene wear-resistant sheet 402 simple and can be completed without professional tools. At the same time, the design of symmetrical snap-fit ​​grooves 4011 and snap-fit ​​protrusions 4021 ensures installation stability and avoids displacement caused by riding vibration.

[0029] Reference Figures 2-5 The hard alloy base 401 is divided into 6-8 segments at equal intervals along the axial / circumferential direction of the rim body 3. Each segment of the hard alloy base 401 has a first neodymium iron boron magnet 403 and a second neodymium iron boron magnet 404 embedded at both ends. The first neodymium iron boron magnet 403 and the second neodymium iron boron magnet 404 are opposite magnetic poles and are magnetically attracted to each other. In application, the design of the magnetic segmented hard alloy base 401 has two advantages: first, it disperses stress and avoids overall deformation; second, it achieves quick positioning and installation through the attraction of opposite magnetic poles. The attraction force of the first neodymium iron boron magnet 403 and the second neodymium iron boron magnet 404 reaches 12-15N, which can withstand the impact of normal riding.

[0030] Reference Figure 2 and Figure 3 The surface of the ultra-high molecular weight polyethylene wear-resistant sheet 402 is provided with circumferentially inclined anti-slip grooves 4022. The grooves 4022 have a depth of 0.5-1.2mm, a width of 2-3mm, and a spacing of 8-10mm between adjacent grooves. The inclined direction of the anti-slip grooves 4022 gradually tilts 45° from the rim body 3 toward the hub 1. In application, the design of the inclined anti-slip grooves 4022 with specific parameters can maintain a specific value (such as 0.35-0.45) of friction coefficient in a wet environment. Compared with a planar structure, it can improve and shorten the braking distance. At the same time, the inclination angle of the anti-slip grooves 4022 can optimize the drainage and mud removal path.

[0031] Reference Figures 1-5 The outer surface of the segmented wear-resistant parts is coated with a fluorescent energy storage coating with a thickness of 50-80μm. In application, the fluorescent energy storage coating can improve safety by enhancing nighttime visibility, and at the same time can serve as a wear indicator layer (the fluorescence disappears when the parts are completely worn).

[0032] The working principle of this utility model is as follows: When installation is required, firstly, clean the wheel rim body 3 and remove oil and dust from the brake contact surface 301. At the same time, press the hard alloy base 401 into the assembly arc groove 302 in the direction of the magnetic pole (alternating N and S). The adjacent sections are automatically positioned by magnetic attraction. Then, align the snap-fit ​​protrusion 4021 on the ultra-high molecular weight polyethylene wear-resistant sheet 402 with the snap-fit ​​groove 4011 on the hard alloy base 401 and press vertically until locked. Finally, spray the fluorescent energy storage coating and let it stand for a period of time to ensure that the coating is fully adhered.

[0033] Post-maintenance: Wear detection: Observe the fluorescent energy storage coating: If there is no fluorescence in some areas, it indicates that the ultra-high molecular weight polyethylene wear-resistant sheet 402 has been worn to its limit (thickness <1mm). At the same time, check the depth of the anti-slip groove 4022: if the groove depth is <0.3mm, it needs to be replaced.

[0034] Replacement of UHMWPE wear-resistant sheet 402: Use a flat tool to pry up the edge of the old UHMWPE wear-resistant sheet 402, remove it after releasing the clip, clean the snap groove 4011 on the carbide base 401, install the new UHMWPE wear-resistant sheet 402 and press to lock it.

[0035] Maintenance of cemented carbide base 401: Replace only when cemented carbide base 401 is deformed or when the first neodymium iron boron magnet 403 and the second neodymium iron boron magnet 404 fail. A special tool is required to pry it out and re-embed a new cemented carbide base 401.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A wear-resistant bicycle rim, comprising a hub (1), spokes (2), and a rim body (3), characterized in that: The rim body (3) has a brake contact surface (301), and the brake contact surface (301) is provided with an assembly arc groove (302) equidistantly arranged along the axial / circumferential direction of the rim body (3). The assembly arc groove (302) is provided with a segmented wear-resistant part. The segmented wear-resistant component includes a cemented carbide base (401) corresponding to the assembly arc groove (302) and an ultra-high molecular weight polyethylene wear-resistant sheet (402) detachably mounted on the cemented carbide base (401), wherein the cemented carbide base (401) is adapted to the assembly arc groove (302).

2. The wear-resistant bicycle rim according to claim 1, characterized in that: The cemented carbide base (401) has symmetrically arranged snap-fit ​​grooves (4011), and the ultra-high molecular weight polyethylene wear-resistant sheet (402) has integrally formed snap-fit ​​protrusions (4021) that correspond to the snap-fit ​​grooves (4011). The snap-fit ​​protrusions (4021) are adapted to the snap-fit ​​grooves (4011), and the ultra-high molecular weight polyethylene wear-resistant sheet (402) can be detachably installed on the cemented carbide base (401) through the snap-fit ​​protrusions (4021) and the snap-fit ​​grooves (4011).

3. The wear-resistant bicycle rim according to claim 1, characterized in that: The cemented carbide base (401) is divided into 6-8 segments at equal intervals along the axial / circumferential direction of the rim body (3), and each segment of the cemented carbide base (401) has a first neodymium iron boron magnet (403) and a second neodymium iron boron magnet (404) embedded at both ends.

4. The wear-resistant bicycle rim according to claim 3, characterized in that: The first neodymium iron boron magnet (403) and the second neodymium iron boron magnet (404) are opposite magnetic poles, and the first neodymium iron boron magnet (403) and the second neodymium iron boron magnet (404) are mutually attracted by each other.

5. The wear-resistant bicycle rim according to claim 1, characterized in that: The surface of the ultra-high molecular weight polyethylene wear-resistant sheet (402) is provided with circumferential and inclined anti-slip grooves (4022), and the anti-slip grooves (4022) have a depth of 0.5-1.2mm, a width of 2-3mm, and a spacing of 8-10mm between adjacent grooves.

6. The wear-resistant bicycle rim according to claim 5, characterized in that: The anti-slip groove (4022) is inclined at 45° along the rim body (3) toward the hub (1).

7. The wear-resistant bicycle rim according to any one of claims 1-6, characterized in that: The outer surface of the segmented wear-resistant part is coated with a fluorescent energy storage coating, and the thickness of the fluorescent energy storage coating is 50-80μm.

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