A bicycle chainring oil-proof cover

Abstract

This utility model relates to the field of oil-proof protection for bicycle chainrings and chains. It includes a protective cover comprising a four-way chain guard, an upper cover, and a rear chain guard. A first connector is attached to the rear surface of the upper cover, and the first connector has four threaded holes. The upper cover is fixed to the two threaded holes on the right side of the first connector by screws. The rear surface of the first connector fits against the bicycle column and is fixed to the bicycle column by a hose clamp. The advantages of this utility model are: through the coordinated operation of the upper cover, rear chain guard, and four-way chain guard, it provides all-around protection for the chainring and chain, preventing oil stains from getting on trousers. Installation is simple; the upper cover only requires screws for fixing, and the rear chain guard has few parts and can be operated by ordinary people without professional tools or skills. The four-way chain guard's rocker arm fixing design allows it to adapt to various bicycle models and specifications.

Description

Technical Field

[0001] This utility model relates to the field of oil-proof technology for bicycle chainrings and cranks, specifically to an oil-proof cover for bicycle chains and cranks. Background Technology

[0002] As a common means of transportation and sports equipment, the maintenance of the bicycle's drivetrain (chain and chainring) is always a key concern for users. During riding, the chain needs to be lubricated to reduce wear, but lubricating oil easily attracts dust, dirt, and other impurities, forming a sticky sludge that not only affects transmission efficiency but also accelerates component wear and shortens the bicycle's lifespan.

[0003] Most existing oil-resistant products for bicycle chainrings and chains only provide protection for the sides of the chainring, while the top of the chainring and the sides of the chain are difficult to protect effectively. In addition, these products generally have poor compatibility and are complicated to install. The installation process is not only time-consuming and laborious, but also requires certain professional knowledge and skills, making it difficult for ordinary users to use. Utility Model Content

[0004] To solve the aforementioned technical problems, this utility model provides a bicycle chain crankset oil-proof cover, which addresses the issues that most products can only protect the sides of the crankset, failing to effectively protect the top of the crankset and the sides of the chain, and also suffer from poor compatibility and cumbersome installation.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a bicycle chain chain anti-oil stain cover, including a cover, the cover including a four-way chain guard, an upper cover and a rear chain guard plate, a first connector connected to the rear surface of the upper cover, the surface of the first connector having four threaded holes, the upper cover being fixed to the two threaded holes on the right side of the first connector by screws, the rear surface of the first connector being in contact with the bicycle column and fixed to the bicycle column by a hose clamp.

[0006] As an improvement, a second connector is connected to the rear surface of the rear chain guard plate. The second connector has four threaded holes, and two elongated holes are opened on the surface of the rear chain guard plate. Screws are installed in both elongated holes. The screws pass through the elongated holes and connect to the second connector. The rear side of the second connector is provided with the rear chain fork of the frame, and the rear surface of the second connector fits against the surface of the rear chain fork of the frame. It is fixed by the hose clamp, which facilitates fixing and height adjustment.

[0007] As an improvement, the front side of the four-way guard plate is provided with four arc-shaped rectangular holes, and a connecting block is provided at each of the four arc-shaped rectangular holes. A toothed plate is fixedly connected to the rear surface of the four-way guard plate, and a self-tapping screw is provided in each of the four arc-shaped rectangular holes. The four self-tapping screws pass through the connecting block and are fixed to the toothed plate, covering the toothed plate to prevent oil stains from getting on clothes.

[0008] As an improvement, the hose clamp is secured by bolts and lock nuts for easy fixing.

[0009] The advantages of this utility model compared with the prior art are as follows: through the coordinated cooperation of the upper guard, the rear chain guard plate and the four-way guard, the chainring and chain are protected in all directions, preventing oil stains from getting on the trouser legs. It is easy to install. The upper guard only needs to be fixed with screws. The rear chain guard plate has fewer parts and can be operated by ordinary people without professional tools and skills. The rocker arm fixing design of the four-way guard makes it compatible with various specifications and models of bicycles. Attached Figure Description

[0010] Figure 1 This is a front view structural diagram of this utility model.

[0011] Figure 2 This is a schematic diagram of the rear view structure of this utility model.

[0012] Figure 3 This is a three-dimensional structural diagram of the present invention.

[0013] As shown in the figure: 1. Upper guard; 2. Rear chain guard; 3. Four-way guard; 4. Arc-shaped rectangular hole; 5. Self-tapping screw; 6. Hose clamp; 7. Rear chainstay; 9. Bicycle column; 11. Long strip hole; 13. First connector; 14. Second connector; 15. Crankset; 16. Guard; 17. Connecting block. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings.

[0015] This utility model combines [the following] when installing the protective cover. Figures 1 to 3 A bicycle chain chain guard for preventing oil stains includes a guard 16, which includes a four-way guard 3, an upper guard 1, and a rear chain guard 2. A first connector 13 is connected to the rear surface of the upper guard 1. The surface of the first connector 13 has four threaded holes. The upper guard 1 is fixed to the two threaded holes on the right side of the first connector 13 by screws. The rear surface of the first connector 13 is in contact with the bicycle column 9 and is fixed to the bicycle column 9 by a hose clamp 6. The hose clamp 6 is fixed by bolts and lock nuts for easy fixation.

[0016] The rear surface of the rear chain guard plate 2 is connected to a second connector 14. The second connector 14 has four threaded holes. The surface of the rear chain guard plate 2 has two elongated holes 11. Each of the two elongated holes 11 has a screw. The screw passes through the elongated holes 11 and connects to the second connector 14. The rear side of the second connector 14 is provided with the rear chain fork 7 of the frame. The rear surface of the second connector 14 is in contact with the surface of the rear chain fork 7 of the frame and is fixed by a hose clamp 6, which facilitates fixing and height adjustment.

[0017] The front side of the four-way guard plate 3 has four arc-shaped rectangular holes 4, and a connecting block 17 is provided at each of the four arc-shaped rectangular holes 4. A toothed plate 15 is fixedly connected to the rear surface of the four-way guard plate 3. A self-tapping screw 5 is provided in each of the four arc-shaped rectangular holes 4. The four self-tapping screws 5 pass through the connecting block 17 and are fixed to the toothed plate 15, covering the toothed plate 15 to prevent oil stains from getting on clothes.

[0018] In actual use, this device is first installed according to the specific model and structure of the bicycle. First, the upper guard 1 is fixed to the bicycle stem 9 via the first connector 13 and the hose clamp 6. When tightening the bolts and lock nuts, the position of the upper guard 1 in the X, Y, and Z axes can be adjusted appropriately to ensure it completely covers the area above the chainring where oil is easily splashed. Next, the rear chain guard 2 is installed. Using the elongated hole 11 and the second connector 14, the vertical position of the rear chain guard 2 is flexibly adjusted according to the actual height of the rear chainstay 7. It is then fixed with the hose clamp 6 to ensure it fits tightly against the side of the chain. Finally, the four-way guard 3 is fixed to the chainring 15 via the connecting block 17 and the self-tapping screw 5, ensuring that the four-way guard 3... The chainring 15 is completely enclosed to prevent oil spillage. After installation, during riding, the upper guard 1, rear chain guard 2, and four-way guard 3 work together to block oil splashes from the chainring and chain during operation. Even when riding on bumpy roads or shifting gears, the components will not loosen due to vibration and will always maintain good protection, effectively preventing oil stains on your trouser legs. After daily use, if you need to clean the bicycle or check the condition of the chain and chainring, simply loosen the bolts and lock nuts of the hose clamp 6, as well as the screws connecting the components, to easily remove the guard 16 without damaging the original structure of the bicycle. After cleaning, simply reverse the installation steps to quickly reinstall the guard on the bicycle.

[0019] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A bicycle chain chain sprocket oil-proof cover, comprising a cover (16), characterized in that, The guard (16) includes a four-way guard plate (3), an upper guard (1) and a rear chain guard plate (2). The rear surface of the upper guard (1) is connected to a first connector (13). The surface of the first connector (13) is provided with four threaded holes. The upper guard (1) and the two threaded holes on the right side of the first connector (13) are fixed by screws. The rear surface of the first connector (13) is in contact with the bicycle column (9) and is fixed to the bicycle column (9) by a hose clamp (6).

2. The bicycle chain crankset oil-proof cover according to claim 1, characterized in that, The rear side surface of the rear chain guard plate (2) is connected to a second connector (14). The second connector (14) has four threaded holes. The surface of the rear chain guard plate (2) has two elongated holes (11). Each of the two elongated holes (11) is provided with a screw. The screw passes through the elongated hole (11) and connects to the second connector (14). The rear side of the second connector (14) is provided with a frame rear chain fork (7), and the rear side surface of the second connector (14) is in contact with the surface of the frame rear chain fork (7) and is fixed by the hose clamp (6).

3. The bicycle chain crankset oil-proof cover according to claim 1, characterized in that, The four-way guard plate (3) has four arc-shaped rectangular holes (4) on its front side, and a connecting block (17) is provided at each of the four arc-shaped rectangular holes (4). A toothed plate (15) is fixedly connected to the rear surface of the four-way guard plate (3). A self-tapping screw (5) is provided in each of the four arc-shaped rectangular holes (4). The four self-tapping screws (5) pass through the connecting block (17) and are fixed to the toothed plate (15).

4. The bicycle chain crankset oil-proof cover according to claim 1, characterized in that, The hose clamp (6) is secured by bolts and lock nuts.

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