Chain with accessories
By introducing a limiting mechanism and spring structure into the chain, the problem of chain tooth skipping during start-up and rapid acceleration is solved, achieving stable chain riding and enhancing chain durability.
Patent Information
- Application Number
- CN202520322733.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-02-27
AI Technical Summary
Chains are prone to skipping teeth during startup and rapid acceleration, affecting the normal riding of the bicycle.
Design a chain with accessories, including a limiting mechanism and a spring structure. The spacing of the fixed plates is adjusted by the stretching and compression of the spring to ensure that the gears smoothly enter the chain links and reduce the phenomenon of skipping teeth.
It effectively reduces chain skipping during startup and rapid acceleration, improving chain stability and practicality, and enhancing chain durability.
Smart Images

Figure CN223839663U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chains, and in particular to a chain with accessories. Background Technology
[0002] Chains are generally metal links or rings, mostly used for mechanical transmission and traction. They can also be used as chain-like objects to obstruct traffic (such as in streets, river or harbor entrances), or as chains used for mechanical transmission.
[0003] During use, sudden starts and rapid acceleration can cause bicycle chains to straighten momentarily, leading to skipped teeth and making riding impossible, which greatly affects the daily use of the bicycle.
[0004] The technical problem this application aims to solve is: how to reduce chain tooth skipping during startup and rapid acceleration. Utility Model Content
[0005] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a chain with accessories to reduce the occurrence of chain skipping and facilitate daily riding.
[0006] The technical solution adopted by this utility model is as follows: a chain with accessories, including an inner chain plate, a limiting mechanism is movably installed on the outer side of the inner chain plate, the limiting mechanism includes a fixed plate, multiple fixed plates are installed, the fixed plates are symmetrically installed on the inner chain plate, a pin is provided between the fixed plate and the inner chain plate for connecting the two, a movable rod is installed between the fixed plates on both sides of the same end, the movable rod and the fixed plate are fixedly connected by a connecting rod, a spring is installed in the movable rod, the two ends of the spring are fixedly connected to the end of the connecting rod away from the fixed plate, a limiting post is fixedly installed on the side of the fixed plate away from the connecting rod, a limiting plate is fixedly installed between the limiting posts on both sides of the same end, a sliding groove is opened on the limiting plate for the limiting post to slide left and right, and multiple fixing nuts are installed on both sides of the limiting post.
[0007] The device is equipped with a limiting mechanism. When the gear fails to engage with the chain link and instead presses against the pin, the limiting plate installed on the outside of the fixing plate prevents the chain from shifting vertically. When the gear presses against the pin and the teeth move forward, the spring pulls, and the fixing plates on both sides move away from each other, increasing the gap in the middle. This facilitates the gear re-engaging into the chain link and prevents the chain from skipping teeth. When the gear presses against the pin and the teeth move backward, the spring compresses, and the fixing plates on both sides move closer together, reducing the distance of the gap in the middle. This facilitates the gear re-engaging into the chain link and prevents the chain from skipping teeth.
[0008] In some implementations, the maximum range of spring expansion is equal to the range of the groove, controlling the distance the chain moves back and forth.
[0009] In some implementations, an outer chain plate is mounted on the outside of the inner chain plate, and the inner and outer chain plates are connected by pins to form a chain assembly.
[0010] In some embodiments, an oil storage tank is provided on the inner chain plate, and an oil storage cotton is installed in the oil storage tank. An oil outlet brush is fixedly installed on the inner wall of the inner chain plate to increase the oil storage capacity of the chain and facilitate the oiling of the gears.
[0011] In some implementations, a cover plate is installed on top of the inner chain plate, which is located on top of the oil reservoir to prevent dust from entering the chain.
[0012] In some implementations, fixing screws are symmetrically installed on the cover plate to facilitate fixing the cover plate.
[0013] The beneficial effects of this utility model are as follows:
[0014] 1) This utility model uses a limiting mechanism. When the chain tooth is stuck on the pin instead of the chain center gap, the spring is stretched due to the force when the gear tooth moves forward, increasing the distance between the two fixing plates. This makes it easier for the next gear tooth to enter the center gap in the limiting mechanism, reducing the possibility of chain tooth skipping. When the gear tooth moves backward while stuck on the pin, the spring is compressed due to the force, reducing the distance between the two fixing plates. This makes it easier for the gear tooth to enter the center gap in the limiting mechanism, reducing the possibility of chain tooth skipping and improving the chain's practicality.
[0015] 2) In this utility model, the limiting plate installed on the outside of the fixed plate is connected by the limiting post. The connecting post is equipped with multiple fixing nuts on both sides of the limiting plate to prevent the chain from being displaced vertically and reduce the possibility of the chain skipping teeth. The limiting plate is provided with a sliding groove for the limiting post to slide, which is used to control the degree of spring deformation and prevent the spring deformation from being too large to reset the position of the gear teeth. Attached Figure Description
[0016] Figure 1 This is a top view of the limiting mechanism of this utility model;
[0017] Figure 2 This is a cross-sectional view of the movable rod of this utility model;
[0018] Figure 3 This is a top view of the limiting plate of this utility model;
[0019] Figure 4 This is a three-dimensional structural diagram of the inner chain plate of this utility model.
[0020] In the diagram: 1. Inner chain plate; 2. Limiting mechanism; 3. Fixing plate; 4. Pin; 5. Movable rod; 6. Connecting rod; 7. Spring; 8. Limiting post; 9. Limiting plate; 10. Outer chain plate; 11. Oil storage tank; 12. Oil storage cotton; 13. Oil outlet brush; 14. Cover plate; 15. Limiting bolt; 16. Slide groove; 17. Fixing nut. Detailed Implementation
[0021] 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.
[0022] Please see Figures 1 to 3 This utility model provides a technical solution: a chain with accessories, including an inner chain plate 1, a limiting mechanism 2 movably mounted on the outer side of the inner chain plate 1, a fixing plate 3 inside the limiting mechanism 2, multiple fixing plates 3 mounted symmetrically on the inner chain plate 1, a pin 4 for connecting the fixing plate 3 and the inner chain plate 1, a movable rod 5 installed between the fixing plates 3 on both sides of the same end, the movable rod 5 and the fixing plate 3 fixedly connected by a connecting rod 6, a spring 7 installed inside the movable rod 5 for moving the fixing plate 3 closer and further away, and the two ends of the spring 7 and... The end of the connecting rod 6 away from the fixed plate 3 is fixedly connected. Limiting posts 8 are fixedly installed on the side of the fixed plate 3 away from the connecting rod 6. Limiting plates 9 are fixedly installed between the limiting posts 8 on both sides of the same end to limit the vertical movement of the chain. The limiting plates 9 have grooves 16 for the limiting posts 8 to slide left and right to control the deformation distance of the spring 7. Multiple fixing nuts 17 are installed on both sides of the limiting plate 9 to prevent the limiting posts 8 from detaching from the limiting plate 9. An outer chain plate 10 is installed on the outside of the inner chain plate 1. The inner chain plate 1 and the outer chain plate 10 are connected by a pin 4.
[0023] Please see Figure 4 An oil storage tank 11 is provided on the inner chain plate 1 to raise the oil storage tank of the chain. An oil storage cotton 12 is installed in the oil storage tank 11 to facilitate the absorption of oil. An oil brush 13 is fixedly installed on the inner wall of the inner chain plate 1 to facilitate the oiling of the gears. A cover plate 14 is installed on the top of the inner chain plate 1 to prevent dust from entering the inside of the chain plate. Limit bolts 15 are symmetrically installed on the cover plate 14 to fix the cover plate 14.
[0024] The working principle and usage process of this utility model are as follows: An outer chain plate 10 is installed on the outer side of the inner chain plate 1. The inner chain plate 1 and the outer chain plate 10 are connected by a pin 4. A limit mechanism 2 is connected to the outer side of the inner chain plate 1. During the use of the chain, if the position of the gear teeth is accidentally misaligned and comes into contact with the pin 4, the gear teeth move backward when they come into contact with the pin 4. At this time, the spring 7 is compressed according to the force, and the compression of the spring 7 drives the connecting rod 6 to move towards the center. The connecting rod 6 drives the fixing plates 3 on both sides to move towards the middle point. At the same time, the limit post 8 moves along the sliding groove 16 opened on the limit plate 9 to reduce the gap in the limit mechanism 2, so that the gear teeth can fall into the limit mechanism 2 to avoid skipping teeth. The limit plate 9 is installed to reduce the possibility of vertical displacement of the chain and further reduce the possibility of skipping teeth. When the gear teeth come into contact with the pin 4, the chain moves forward. At this time, the spring 7 is stretched and deformed according to the force. The spring 7 stretches the electric connecting rod 6 to move to both sides. The connecting rod 6 drives the fixed plate 3 to move to both sides. At the same time, the limiting post 8 moves along the sliding groove 16 opened on the limiting plate 9, increasing the gap in the limiting mechanism 2, so that the next gear tooth can fall into the limiting mechanism 2 to avoid skipping teeth. The limiting post 8 is equipped with multiple fixing nuts 17 on both sides of the limiting plate 9 to prevent the limiting post 8 from detaching from the limiting plate 9. When it is necessary to add oil to the chain, first open the fixing nuts 17 and take out the cover plate 14 to add oil to the oil storage tank 11. The oil storage tank 11 is equipped with oil storage cotton 12 to facilitate the storage of oil. Then, cover the cover plate 14 and screw in the fixing nuts 17 to complete the addition of oil to the chain. An oil brush 13 is fixedly installed on the inner wall of the inner chain plate 1 to facilitate brushing oil on the gears.
[0025] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A chain with attachments, comprising an inner chain plate (1), characterized in that, A limiting mechanism (2) is movably installed on the outer side of the inner chain plate (1). The limiting mechanism (2) includes a fixing plate (3). Multiple fixing plates (3) are installed symmetrically on the inner chain plate (1). A pin (4) is provided between the fixing plate (3) and the inner chain plate (1) for connecting the two. A movable rod (5) is installed between the fixing plates (3) on both sides of the same end. The movable rod (5) and the fixing plate (3) are fixedly connected by a connecting rod (6). A spring (7) is installed inside the rod (5). The two ends of the spring (7) are fixedly connected to the end of the connecting rod (6) away from the fixed plate (3). Limiting posts (8) are fixedly installed on the side of the fixed plate (3) away from the connecting rod (6). Limiting plates (9) are fixedly installed between the limiting posts (8) on both sides of the same end. The limiting plates (9) have grooves (16) for the limiting posts (8) to slide left and right. Multiple fixing nuts (17) are installed on both sides of the limiting plates (9) for the limiting posts (8).
2. A chain with accessories according to claim 1, characterized in that, The maximum scaling range of the spring (7) is equal to the range of the groove (16).
3. A chain with accessories according to claim 1, characterized in that, An outer chain plate (10) is installed on the outside of the inner chain plate (1), and the inner chain plate (1) and the outer chain plate (10) are connected by a pin (4).
4. A chain with accessories according to claim 1, characterized in that, An oil storage tank (11) is provided on the inner chain plate (1), an oil storage cotton (12) is installed in the oil storage tank (11), and an oil outlet brush (13) is fixedly installed on the inner wall of the inner chain plate (1).
5. A chain with accessories according to claim 1, characterized in that, The top of the inner chain plate (1) is fitted with a cover plate (14), which is located on top of the oil storage tank (11).
6. A chain with accessories according to claim 5, characterized in that, Limit bolts (15) are symmetrically installed on the cover plate (14).