Chain Nylon Protective Disc

Abstract

This utility model discloses a nylon protective disc for chains, specifically relating to the technical field of chain protection discs. It includes a first limiting plate and a second limiting plate, which are arranged opposite to each other. The surfaces of the first and second limiting plates are respectively provided with mounting grooves, and these mounting grooves are interconnected. This utility model, by employing an arc-shaped nylon protective structure, allows the first and second limiting plates, the second limiting plate, the first baffle, and the second baffle to fully cover the meshing area between the chain and the sprocket, directly preventing clothing such as trouser legs, shoelaces, and long skirts from getting caught in the transmission gap and avoiding tearing. Simultaneously, it isolates children's fingers from contact with the rotating chain, preventing pinching, abrasions, and other safety accidents, specifically addressing the problem of existing chains lacking protection or providing incomplete protection.

Description

Technical Field

[0001] This utility model relates to the field of chain protection disc technology, and more specifically, to a chain nylon protection disc. Background Technology

[0002] A chain is a flexible mechanical component consisting of a series of freely rotating metal links (usually including inner chain plates, outer chain plates, pins, rollers, etc.). Its core function is to transmit power and motion, transferring the rotational force of the driving component (such as the chainring of a bicycle or the crankshaft sprocket of a motorcycle) to the driven component (such as the freewheel of a bicycle or the rear wheel sprocket of a motorcycle), ultimately driving the equipment to run.

[0003] In everyday scenarios (such as bicycles / motorcycles): When riding, clothing such as trouser legs, shoelaces, and long skirts may get caught in the meshing gap between the chain and the chainring, causing the clothing to tear or even pulling the legs towards the drive mechanism, resulting in abrasions and crush injuries; when children ride, their fingers may be pinched if they accidentally touch the rotating chain. To address this, a nylon chain protection disc is provided. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a chain nylon protective disc, which aims to solve the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a chain nylon protective disc, including a first limiting plate and a second limiting plate, wherein the first limiting plate and the second limiting plate are arranged opposite to each other;

[0006] The surfaces of the first limiting plate and the second limiting plate are respectively provided with mounting grooves, and the mounting grooves are connected to each other;

[0007] A first baffle and a second baffle are respectively provided in the two mounting slots. The first baffle and the second baffle are arranged opposite to each other, and a number of limiting pins are embedded in the first limiting plate, the second limiting plate, the first baffle, and the second baffle.

[0008] Optionally, in a possible implementation, the cross-sectional shape of the first limiting plate, the second limiting plate, the first baffle, and the second baffle are all set to be arc-shaped, and the first baffle and the second baffle are rotatably connected to the mounting groove. A plurality of first limiting holes are opened through the first baffle and the second baffle. A plurality of second limiting holes are opened through the inner wall of the mounting groove. The mounting groove and the second limiting holes are stacked, and each of the limiting pins is located in the corresponding mounting groove and the second limiting hole. A first misalignment groove is formed between the first limiting plate and the second limiting plate, and a second misalignment groove is formed between the first baffle and the second baffle. Anti-slip sleeves are respectively provided on the outer sides of the plurality of limiting pins. The anti-slip sleeves can be serrated.

[0009] The technical effects and advantages of this utility model are as follows:

[0010] By adopting an arc-shaped nylon protective structure, the first and second limiting plates, the second limiting plate, the first baffle and the second baffle can fully cover the meshing area of ​​the chain and sprocket, directly preventing trouser legs, shoelaces, long skirts and other clothing from getting caught in the transmission gap and avoiding tearing of clothing; at the same time, it isolates children's fingers from contact with the rotating chain, eliminating safety accidents such as pinching and abrasion, and specifically solving the problem of existing chains having no protection or incomplete protection.

[0011] The first and second baffles are rotatably connected to the mounting groove, and the angle can be flexibly adjusted to adapt to different sizes of sprockets and changes in chain tension. With the combination of limit pins and serrated anti-slip sleeves, the baffle angle can be firmly fixed to prevent chain vibration from causing the protective structure to loosen, thus solving the problems of adaptability and stability of traditional protective discs that are one type for one use and easy to move. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0013] Figure 1 This is a front view of the overall structure of this utility model.

[0014] Figure 2 This is a top view of the overall structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the first limiting plate and the second limiting plate of this utility model.

[0016] Figure 4 This is a schematic diagram of the first limiting hole, the second baffle, the limiting pin, and the anti-slip sleeve of this utility model.

[0017] The attached figures are labeled as follows: 1. First limiting plate; 2. Second limiting plate; 3. First baffle; 4. Second baffle; 5. First limiting hole; 6. Limiting pin; 7. Anti-slip sleeve; 8. Mounting groove; 9. Second limiting hole; 10. First misalignment groove; 11. Second misalignment groove. Detailed Implementation

[0018] 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.

[0019] This embodiment discloses a chain nylon protective disc, which aims to solve the safety problems in the prior art where chains are easily caught in trouser legs, shoelaces and other clothing during daily use, causing damage to clothing, or children accidentally touching the rotating chain and getting pinched. At the same time, it improves the adaptability and installation stability of the protective disc.

[0020] Specifically, the chain nylon protective disc includes a first limiting plate 1 and a second limiting plate 2. Both the first limiting plate 1 and the second limiting plate 2 are integrally injection molded from nylon material, capable of withstanding minor impacts and friction during chain transmission over a long period, while avoiding the drawbacks of metal materials such as easy rusting and heavy weight. The first limiting plate 1 and the second limiting plate 2 are arranged relatively parallel, and both have an arc-shaped cross-section. This arc-shaped structure matches the outer circumference of bicycle chainrings and motorcycle sprockets, allowing for a close fit to the outside of the transmission components, forming all-around protection and avoiding blind spots.

[0021] like Figure 3 As shown, mounting grooves 8 are respectively formed on the inner surfaces of the first limiting plate 1 and the second limiting plate 2. The mounting grooves 8 are grooves extending along the arc direction of the limiting plate, which are adapted to the thickness of the baffle to be assembled later. The mounting grooves 8 on the two limiting plates are symmetrically connected to ensure that the baffle can protect both sides of the chain simultaneously after assembly. The first baffle 3 and the second baffle 4 are rotatably connected in the two mounting grooves 8 respectively. The first baffle 3 and the second baffle 4 are also made of nylon material, and their cross-sectional shape is the same as that of the limiting plates, which is arc-shaped. They are arranged opposite to each other. When the protective disc is adapted to different sizes of sprockets or when the chain tension changes, the rotation angle of the baffle can be adjusted to ensure that the baffle always maintains a safe distance from the chain surface, avoiding direct contact between the baffle and the chain to generate friction noise, while not affecting the normal transmission of the chain.

[0022] like Figure 4As shown, several first limiting holes 5 are evenly provided along the length of the first baffle 3 and the second baffle 4; correspondingly, several second limiting holes 9 are also evenly provided along the arc direction on the inner wall of the mounting groove 8. The diameter and spacing of the second limiting holes 9 are exactly the same as those of the first limiting holes 5, and the mounting groove 8 and the second limiting holes 9 are stacked. Several limiting pins 6 are embedded in the first limiting plate 1, the second limiting plate 2, the first baffle 3 and the second baffle 4. Each limiting pin 6 passes through the corresponding first limiting hole 5 and is inserted into the second limiting hole 9 to fix the angle between the baffle and the limiting plate. The outer side of the limiting pin 6 is wrapped with a serrated anti-slip sleeve 7. The anti-slip sleeve 7 is made of nitrile rubber. The serrated structure can increase the friction with the inner wall of the limiting hole, preventing the limiting pin 6 from loosening and falling off due to long-term chain vibration. At the same time, nitrile rubber has aging resistance and can adapt to outdoor sun and rain environments.

[0023] like Figure 1 and Figure 2 As shown, a first misalignment groove 10 is formed between the first limiting plate 1 and the second limiting plate 2. The first misalignment groove 10 is located at one end of the connection between the two limiting plates to avoid interference between the protective plate and the transmission components. A second misalignment groove 11 is formed between the first baffle 3 and the second baffle 4. The second misalignment groove 11 corresponds to the first misalignment groove 10 in position and has the same size, further expanding the clearance space and ensuring that the chain can run smoothly throughout the entire transmission cycle without jamming.

[0024] The specific working principle is as follows: First, according to the size of the chain to be protected, adjust the rotation angle of the first baffle 3 and the second baffle 4. By pulling out the limit pin 6, rotate the baffle to a position that matches the outer circumference of the chain, so that the first limit hole 5 is aligned with the corresponding second limit hole 9 on the mounting groove 8. Then insert the limit pin 6 with the anti-slip sleeve 7 to complete the baffle angle fixation.

[0025] The adjusted protective disc is fixed to the frame outside the bicycle chainring by bolts through the first limiting plate 1 and the second limiting plate 2, and the protective disc covers the exposed part of the chain.

[0026] When the bicycle is ridden, the chain is driven between the limiting plate and the baffle inside the protective chainring. The nylon protective structure can prevent clothing such as trouser legs and shoelaces from getting caught between the chain and the chainring, while also preventing children's fingers from accidentally touching the rotating chain. If the chain deviates slightly due to vibration, the arc-shaped baffle can guide it and prevent the chain from falling off. The limiting pin 6 fixed by the anti-slip sleeve 7 can ensure the baffle angle is stable and maintain the protective effect for a long time.

[0027] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A chain nylon protective disc, characterized in that: It includes a first limiting plate (1) and a second limiting plate (2), which are arranged opposite to each other; The first limiting plate (1) and the second limiting plate (2) are respectively provided with mounting grooves (8), and the mounting grooves (8) are connected to each other; The two mounting slots (8) are respectively provided with a first baffle (3) and a second baffle (4). The first baffle (3) and the second baffle (4) are arranged opposite to each other, and a number of limiting pins (6) are embedded in the first limiting plate (1), the second limiting plate (2), the first baffle (3) and the second baffle (4).

2. The chain nylon protective disc according to claim 1, characterized in that: The cross-sectional shape of the first limiting plate (1), the second limiting plate (2), the first baffle (3) and the second baffle (4) are all set to be arc-shaped, and the first baffle (3) and the second baffle (4) are rotatably connected to the mounting groove (8).

3. The chain nylon protective disc according to claim 1, characterized in that: The first baffle (3) and the second baffle (4) are provided with a number of first limiting holes (5), and the inner wall of the mounting groove (8) is provided with a number of second limiting holes (9).

4. The chain nylon protective disc according to claim 1, characterized in that: The mounting groove (8) and the second limiting hole (9) are stacked, and each of the limiting pins (6) is located in the corresponding mounting groove (8) and the second limiting hole (9).

5. The chain nylon protective disc according to claim 1, characterized in that: A first misalignment groove (10) is formed between the first limiting plate (1) and the second limiting plate (2), and a second misalignment groove (11) is formed between the first baffle (3) and the second baffle (4).

6. The chain nylon protective disc according to claim 1, characterized in that: Each of the plurality of limiting pins (6) is provided with an anti-slip sleeve (7) on its outer side, and the anti-slip sleeve (7) may be serrated.

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