Scratch-proof chain box piece of bicycle

Abstract

The utility model belongs to the technical field of bicycle accessories, and discloses a bicycle scratch-proof chain box sheet which comprises a chain box body which is made of light composite materials and is of an arc-shaped sheet structure. The anti-skid layer is arranged on the inner side of the chain box main body; the multiple flow guide grooves are formed in the chain box body, extend in the length direction of the chain box body and guide airflow and block external dust; the chain box main body is connected with a bicycle frame through the mounting assembly, the mounting assembly comprises an elastic buckle and a fixing bolt, a composite material of the chain box main body is formed by mixing nylon and glass fibers according to the proportion of 3: 1 in an injection molding mode, the surface of the chain box main body is coated with an ultraviolet-proof coating, the anti-skid layer is made of silica gel or rubber, and anti-skid grains are formed on the surface of the anti-skid layer. By means of the double-buffering structure of the anti-skid layer and the honeycomb-shaped damping layer, the hard chain box is prevented from making direct contact with the frame, the magnetic flow guide grooves are combined to actively adsorb metal chippings, and the scratch risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of bicycle accessories technology, and in particular to a bicycle anti-scratch chain box plate. Background Technology

[0002] A bicycle anti-scratch chain guard is a protective device installed between the bicycle chain and the frame. It is mainly used to prevent the chain from contacting the frame during riding, thereby avoiding scratches or wear on the frame. It has shown great application potential in daily riding, sports riding, children's bicycles and other fields.

[0003] Traditional bicycle chain guards (chain covers) are mainly used to cover the chain and prevent clothing from getting caught in it, but they have the following drawbacks:

[0004] 1) Easily scratches the frame: Traditional chain guards are mostly made of hard materials (such as metal and ABS plastic), and after installation, they are in direct contact with the frame. When riding, vibrations or misalignment during installation can easily scratch the frame paint.

[0005] 2) Complex installation: Most chain boxes rely on multiple sets of bolts for fixing, which makes disassembly and maintenance inconvenient, and improper installation can easily lead to structural loosening. Therefore, we propose a bicycle anti-scratch chain box plate. Utility Model Content

[0006] In order to overcome the defects of the prior art mentioned above, the inventors conducted in-depth research and, after a great deal of creative work, completed this utility model.

[0007] Specifically, the technical problem to be solved by this utility model is to provide a bicycle anti-scratch chain box piece to solve the existing technical problems of easy scratching of the frame and complicated installation.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0009] A bicycle scratch-resistant chain box sheet includes a chain box body, which is made of lightweight composite material and has an arc-shaped sheet structure.

[0010] An anti-slip layer is provided on the inner side of the chain box body;

[0011] A plurality of flow guide channels are provided on the chain box body and extend along the length direction of the chain box body. The flow guide channels guide airflow and block external dust.

[0012] The chain box body is connected to the bicycle frame via a mounting assembly, which includes a resilient buckle and fixing bolts.

[0013] As an improved technical solution, the composite material of the chain box body is injection molded from a 3:1 mixture of nylon and glass fiber, and the surface is coated with an anti-ultraviolet coating.

[0014] As an improved technical solution, the anti-slip layer is made of silicone or rubber, the surface of the anti-slip layer is provided with anti-slip texture, and the thickness of the anti-slip layer is 1-3mm.

[0015] As an improved technical solution, a number of magnetic adsorption strips are installed on the inner wall of the guide channel, and the magnetic adsorption strips are equidistantly arranged along the circumference of the guide channel. The magnetic adsorption strips are used to adsorb metal debris generated by chain friction.

[0016] As an improved technical solution, the elastic buckle has a U-shaped structure, a buffer pad is installed on the inner side of the elastic buckle, and the opening direction of the elastic buckle matches the curvature of the frame tube.

[0017] As an improved technical solution, the screw portion of the fixing bolt is wrapped with an anti-loosening rubber sleeve, and the rubber sleeve of the anti-loosening rubber sleeve is made of thermoplastic polyurethane.

[0018] As an improved technical solution, a honeycomb-shaped shock-absorbing layer is also provided on the inner side of the chain box body. The honeycomb-shaped shock-absorbing layer is bonded to the anti-slip layer, and the honeycomb pore size on the honeycomb-shaped shock-absorbing layer is 2-5mm.

[0019] After adopting the above technical solution, the beneficial effects of this utility model are:

[0020] 1. This utility model, through the dual buffer structure of the anti-slip layer and the honeycomb shock-absorbing layer, can avoid direct contact between the rigid chain box and the frame. At the same time, combined with the magnetic guide channel to actively absorb metal debris, it further reduces the risk of scratches.

[0021] 2. The present invention uses a nylon and glass fiber composite material, which can reduce weight while ensuring strength, and the surface anti-ultraviolet coating can extend the service life outdoors.

[0022] 3. The combination of the elastic buckle and the anti-loosening fixing bolt in this utility model can ensure stability under vibration environment. Attached Figure Description

[0023] 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:

[0024] Figure 1 This is a schematic diagram of the overall main structure of this utility model.

[0025] Figure 2 This is a schematic side view of the overall structure of this utility model.

[0026] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0027] Figure 4 For the present utility model Figure 2 Enlarged structural diagram at point B.

[0028] Explanation of reference numerals in the attached figures:

[0029] In the diagram: 1. Chain box body; 2. Anti-slip layer; 201. Anti-slip texture; 3. Guide channel; 301. Magnetic adsorption strip; 4. Elastic buckle; 401. Buffer pad; 5. Fixing bolt; 501. Anti-loosening rubber sleeve; 6. Honeycomb shock-absorbing layer. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0032] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0033] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0034] Reference Figures 1-4 This invention provides a bicycle scratch-resistant chain box sheet, which includes a chain box body 1. The chain box body 1 is made of lightweight composite material and has an arc-shaped sheet structure. The composite material of the chain box body 1 is injection molded by mixing nylon and glass fiber in a 3:1 ratio, and the surface is coated with a UV-resistant coating. In application, the use of nylon and glass fiber composite material can reduce weight while ensuring strength, and the UV-resistant coating on the surface can extend the service life outdoors.

[0035] Anti-slip layer 2 is located inside the chain box body 1. The anti-slip layer 2 is made of silicone or rubber and has anti-slip texture 201 on its surface. The thickness of the anti-slip layer 2 is 1-3mm. A honeycomb shock-absorbing layer 6 is also provided inside the chain box body 1. The honeycomb shock-absorbing layer 6 is bonded to the anti-slip layer 2. The honeycomb pore size on the honeycomb shock-absorbing layer 6 is 2-5mm. In application, the double buffer structure of the anti-slip layer 2 and the honeycomb shock-absorbing layer 6 can prevent the hard chain box from directly contacting the frame.

[0036] A plurality of flow channels 3 are provided on the chain box body 1 and extend along the length of the chain box body 1. The flow channels 3 guide airflow and block external dust. A plurality of magnetic adsorption strips 301 are installed on the inner wall of the flow channels 3 and are equidistantly arranged along the circumference of the flow channels 3. The magnetic adsorption strips 301 are used to adsorb metal debris generated by chain friction. In application, the magnetic adsorption strips 301 in the flow channels 3 can actively adsorb metal debris and reduce the risk of scratches.

[0037] The chain box body 1 is connected to the bicycle frame via the mounting components. The mounting components include a flexible buckle 4 and a fixing bolt 5. The flexible buckle 4 has a U-shaped structure and a buffer pad 401 is installed on the inner side of the flexible buckle 4. The opening direction of the flexible buckle 4 matches the curvature of the frame tube diameter. The screw part of the fixing bolt 5 is covered with an anti-loosening rubber sleeve 501. The rubber sleeve of the anti-loosening rubber sleeve 501 is made of thermoplastic polyurethane. In application, the combination of the flexible buckle 4 and the anti-loosening fixing bolt 5 can ensure stability under vibration.

[0038] This utility model provides a bicycle anti-scratch chain box plate. Through the double buffer structure of the anti-slip layer 2 and the honeycomb shock-absorbing layer 6, it can avoid direct contact between the hard chain box and the frame. Combined with the magnetic guide groove 3 to actively absorb metal debris, it can reduce the risk of scratches.

[0039] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A bicycle chain guard plate with anti-scratch properties, characterized in that: include: The chain box body (1) is made of lightweight composite material and has an arc-shaped sheet structure; Anti-slip layer (2), the anti-slip layer (2) is provided on the inner side of the chain box body (1); A plurality of flow channels (3) are provided on the chain box body (1), and the plurality of flow channels (3) extend along the length direction of the chain box body (1). The flow channels (3) guide airflow and block external dust. The chain box body (1) is connected to the bicycle frame via the mounting assembly, which includes a resilient buckle (4) and a fixing bolt (5).

2. The bicycle anti-scratch chain guard plate according to claim 1, characterized in that: The anti-slip layer (2) is made of silicone or rubber, and the surface of the anti-slip layer (2) is provided with anti-slip texture (201). The thickness of the anti-slip layer (2) is 1-3mm.

3. The bicycle anti-scratch chain guard plate according to claim 1, characterized in that: A plurality of magnetic adsorption strips (301) are installed on the inner wall of the guide groove (3), and the plurality of magnetic adsorption strips (301) are equidistantly arranged along the circumference of the guide groove (3). The magnetic adsorption strips (301) are used to adsorb metal debris generated by chain friction.

4. The bicycle anti-scratch chain guard plate according to claim 1, characterized in that: The elastic buckle (4) has a U-shaped structure, and a buffer pad (401) is installed on the inner side of the elastic buckle (4). The opening direction of the elastic buckle (4) matches the arc of the frame tube diameter.

5. The bicycle anti-scratch chain guard plate according to claim 1, characterized in that: The screw portion of the fixing bolt (5) is covered with an anti-loosening rubber sleeve (501), and the rubber sleeve of the anti-loosening rubber sleeve (501) is made of thermoplastic polyurethane.

6. The bicycle anti-scratch chain guard plate according to claim 1, characterized in that: The inner side of the chain box body (1) is also provided with a honeycomb shock-absorbing layer (6), which is bonded to the anti-slip layer (2). The honeycomb pore size on the honeycomb shock-absorbing layer (6) is 2-5mm.

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