A chain anti-derailment device for motorcycle chains

Abstract

This utility model discloses a chain anti-derailment device for motorcycle chains, including a U-shaped mounting base. A U-shaped support platform is fixedly mounted on the front end of the U-shaped mounting base. A movable lug is movably connected to the inner wall of the front end of the U-shaped support platform. An anti-derailment baffle is fixedly mounted on the front end of the movable lug. An adjusting screw is rotatably connected to the rear end of the movable lug via a rotating shaft. A fixing nut for locking the adjusting screw is threaded onto the outer curved surface of the rear end of the adjusting screw. An anti-derailment groove is formed on the inner side of the anti-derailment baffle. A main slide rod is movably connected to the front end of the anti-derailment baffle. A limit ring is fixedly mounted on the outer end of the main slide rod. A U-shaped mounting bracket is fixedly mounted on the inner side of the main slide rod. Secondary slide rods are fixedly mounted on both sides of the outer end of the U-shaped mounting bracket. This utility model achieves chain anti-derailment and limit while facilitating linear adjustment of the anti-derailment position of the anti-derailment baffle.

Description

Technical Field

[0001] This utility model relates to the field of motorcycle parts technology, specifically to a chain anti-derailment device for motorcycle chains. Background Technology

[0002] The motorcycle chain is a crucial component of the motorcycle's power transmission system, transmitting power from the engine to the rear wheel to propel the motorcycle forward. However, during motorcycle operation, due to various factors such as changes in chain tension, sprocket wear, vibrations during riding, and road bumps, the chain can easily slip off the sprocket. Once the chain comes off, it not only interrupts the motorcycle's power transmission, causing the vehicle to suddenly lose power, but it can also lead to safety accidents, posing a serious threat to the rider's personal safety.

[0003] However, in practical use, while there are some devices on the market to prevent chain slippage, most of them have problems such as complex structure and relatively fixed installation position. For example, some anti-slip devices require changes to the original chain drive structure of the motorcycle, which increases the difficulty and cost of installation. Some devices, after being fixedly installed, are not easy to adapt and adjust the anti-slip distance of the chain, resulting in certain limitations in use. Utility Model Content

[0004] The purpose of this utility model is to provide a chain anti-derailment device for motorcycle chains, in order to solve the problems mentioned in the background art, that although there are some devices on the market to prevent chain detachment, most of them have complex structures and relatively fixed installation positions; for example, some anti-derailment devices require changes to the original chain drive structure of the motorcycle, which increases the difficulty and cost of installation, and some devices, after being fixedly installed, are not easy to adapt and adjust the anti-derailment distance for the chain, resulting in certain limitations in use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a U-shaped mounting base, a U-shaped support platform fixedly mounted at the front end of the U-shaped mounting base, a movable ear movably connected to the inner wall of the front end of the U-shaped support platform, an anti-detachment baffle fixedly mounted at the front end of the movable ear, an adjusting screw rotatably connected to the rear end of the movable ear via a rotating shaft, a fixing nut for locking the adjusting screw via a threaded connection on the outer curved surface of the rear end of the adjusting screw, an anti-detachment groove on the inner side of the anti-detachment baffle, a main slide rod movably connected through and fitted to the front end of the anti-detachment baffle, a limit ring fixedly mounted at the outer end of the main slide rod, a U-shaped mounting frame fixedly mounted on the inner side of the main slide rod, auxiliary slide rods fixedly mounted on both sides of the outer end of the U-shaped mounting frame, a limiting roller for rolling and limiting the motorcycle chain rotatably connected to the inner side of the U-shaped mounting frame via a pin shaft, and a support spring fixedly mounted at the outer end of the U-shaped mounting frame.

[0006] Preferably, the U-shaped mounting base has four through-holes at its four corners, and the number of mounting holes is four, which are symmetrically distributed at the four corners of the U-shaped mounting base.

[0007] Preferably, the movable ear has a limiting groove at its lower end, and the U-shaped support platform has limiting bosses on its upper and lower inner walls, with the limiting bosses being movably connected to the inner wall of the limiting groove.

[0008] Preferably, the rear end of the adjusting screw is threadedly connected to the middle of the U-shaped support platform, and the inner wall of the anti-detachment groove matches the outer end of the motorcycle sprocket.

[0009] Preferably, there are two main slide rods, which are symmetrically distributed on the upper and lower sides of the front end of the anti-detachment baffle, and the outer end of the auxiliary slide rod is movably connected to the front end of the anti-detachment baffle through and fitting.

[0010] Preferably, the outer end of the support spring is fixedly installed inside the anti-detachment groove, and the support spring is in a compressed state.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] When the anti-derailment groove of this utility model limits the motorcycle chain to prevent it from slipping off, the limiting roller rolls the motorcycle chain to keep it in place while the support spring is compressed. The elastic potential energy generated by the compression of the support spring pushes the U-shaped mounting bracket inward. When the U-shaped mounting bracket is pushed inward, it causes the limiting roller to always be in contact with the motorcycle chain. Thus, when the motorcycle chain rotates, the anti-derailment groove and the limiting roller will effectively prevent the chain from slipping off the sprocket.

[0013] This invention also allows the adjusting screw to move back and forth when it rotates, due to the force generated by the threaded connection with the center of the U-shaped support. When the adjusting screw moves back and forth, it drives the moving ear to move linearly back and forth. When the moving ear moves linearly back and forth, it drives the anti-slip baffle to move linearly back and forth. This achieves the anti-slip limit of the motorcycle chain while facilitating the linear adjustment of the anti-slip baffle's anti-slip position. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a motorcycle chain anti-derailment device according to the present invention. Figure 1 ;

[0015] Figure 2 This is a schematic diagram of the overall structure of a motorcycle chain anti-derailment device according to the present invention. Figure 2 ;

[0016] Figure 3 This is a partial structural diagram of an anti-chain-derailment device for motorcycle chains according to the present invention.

[0017] In the diagram: 1. U-shaped mounting base; 2. Mounting hole; 3. U-shaped support platform; 4. Moving ear; 5. Anti-detachment baffle; 6. Adjusting screw; 7. Anti-detachment groove; 8. Main slide rod; 9. Limiting ring; 10. U-shaped mounting bracket; 11. Secondary slide rod; 12. Limiting roller; 13. Support spring; 14. Fixing nut. 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] Please see Figure 1-3 This utility model provides a technical solution for a chain anti-derailment device for motorcycle chains: it includes a U-shaped mounting base 1, with mounting holes 2 through the four corners of the U-shaped mounting base 1, and the number of mounting holes 2 is four, which are symmetrically distributed at the four corners of the U-shaped mounting base 1, so that the U-shaped mounting base 1 can be installed and fixed by mounting bolts through the mounting holes 2.

[0020] A U-shaped support platform 3 is fixedly installed at the front end of the U-shaped mounting base 1. A movable ear 4 is movably connected to the inner wall of the front end of the U-shaped support platform 3. An anti-slip baffle 5 is fixedly installed at the front end of the movable ear 4. A limiting groove is opened at the lower end of the movable ear 4. Limiting bosses are opened at the upper and lower inner walls of the U-shaped support platform 3, and the limiting bosses are movably connected to the inner wall of the limiting groove, so that the movable ear 4 is linearly limited by the limiting bosses and the limiting groove. An adjusting screw 6 is rotatably connected to the rear end of the movable ear 4 through a rotating shaft, and the rear end of the adjusting screw 6 is threaded through the middle of the U-shaped support platform 3. A fixing nut 14 for locking and fixing the adjusting screw 6 is threaded on the outer curved surface of the rear end of the adjusting screw 6. An anti-slip groove 7 is opened on the inner side of the anti-slip baffle 5, and the inner wall of the anti-slip groove 7 matches the outer end of the motorcycle sprocket, so that the motorcycle chain is limited by the anti-slip groove 7. The front end of the plate 5 is connected to a main slide rod 8, and there are two main slide rods 8, which are symmetrically distributed on the upper and lower sides of the front end of the anti-detachment baffle 5. A limit ring 9 is fixedly installed on the outer end of the main slide rod 8, and a U-shaped mounting bracket 10 is fixedly installed on the inner side of the main slide rod 8. A secondary slide rod 11 is fixedly installed on both sides of the outer end of the U-shaped mounting bracket 10, and the outer end of the secondary slide rod 11 is connected to the front end of the anti-detachment baffle 5. This allows the U-shaped mounting bracket 10 to be vertically and linearly limited by the secondary slide rod 11 in conjunction with the main slide rod 8. A limit roller 12 for rolling limit of the motorcycle chain is rotatably connected to the inner side of the U-shaped mounting bracket 10 by a pin. A support spring 13 is fixedly installed on the outer end of the U-shaped mounting bracket 10, and the outer end of the support spring 13 is fixedly installed on the inner side of the anti-detachment groove 7. The support spring 13 is in a compressed state, so that the U-shaped mounting bracket 10 is elastically supported by the support spring 13.

[0021] Working principle: In use, this utility model uses the anti-derailment groove 7 to prevent the motorcycle chain from slipping off. When the anti-derailment groove 7 prevents the motorcycle chain from slipping off, the limiting roller 12 rolls and limits the motorcycle chain, and the support spring 13 is in a compressed state. The elastic potential energy generated by the compression of the support spring 13 will push the U-shaped mounting bracket 10 inward. When the U-shaped mounting bracket 10 is pushed inward, it will cause the limiting roller 12 to always be in contact with the motorcycle chain. Thus, when the motorcycle chain rotates, the anti-derailment groove 7 and the limiting roller 12 will effectively prevent the chain from slipping off the sprocket.

[0022] At the same time, by rotating the loosening fixing nut 14, when the fixing nut 14 is loose, by rotating the adjusting screw 6, when the adjusting screw 6 rotates, it will move back and forth due to the force generated by the threaded connection with the middle of the U-shaped support platform 3. When the adjusting screw 6 moves back and forth, it will drive the moving ear 4 to move back and forth linearly. When the moving ear 4 moves back and forth linearly, it will drive the anti-detachment baffle 5 to move back and forth linearly. Thus, while limiting the motorcycle chain from detachment, it is convenient to adjust the anti-detachment position of the anti-detachment baffle 5 by moving it back and forth linearly.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A chain anti-derailment device for motorcycle chains, characterized in that: The system includes a U-shaped mounting base (1), a U-shaped support platform (3) fixedly mounted at the front end of the U-shaped mounting base (1), a movable ear (4) movably connected to the inner wall of the front end of the U-shaped support platform (3), an anti-detachment baffle (5) fixedly mounted at the front end of the movable ear (4), an adjusting screw (6) rotatably connected to the rear end of the movable ear (4) via a rotating shaft, and a fixing nut (14) for locking and fixing the adjusting screw (6) is threaded on the outer curved surface of the rear end of the adjusting screw (6). An anti-detachment groove is provided on the inner side of the anti-detachment baffle (5). (7) The front end of the anti-detachment baffle (5) is connected to the main slide rod (8) through and fits. The outer end of the main slide rod (8) is fixedly installed with a limit ring (9). The inner side of the main slide rod (8) is fixedly installed with a U-shaped mounting bracket (10). The outer sides of the U-shaped mounting bracket (10) are fixedly installed with auxiliary slide rods (11). The inner side of the U-shaped mounting bracket (10) is rotatably connected with a limit roller (12) for rolling and limiting the motorcycle chain through a pin shaft. The outer end of the U-shaped mounting bracket (10) is fixedly installed with a support spring (13).

2. The motorcycle chain guard according to claim 1, characterized in that: The U-shaped mounting base (1) has mounting holes (2) through its four corners, and there are four mounting holes (2) symmetrically distributed at the four corners of the U-shaped mounting base (1).

3. The motorcycle chain guard according to claim 2, wherein: The movable ear (4) has a limiting groove at its lower end, and the U-shaped support platform (3) has limiting bosses on its upper and lower inner walls. The limiting bosses are fitted and movably connected to the inner wall of the limiting groove.

4. The motorcycle chain guard according to claim 3, wherein: The rear end of the adjusting screw (6) is threaded through and connected to the middle of the U-shaped support platform (3), and the inner wall of the anti-detachment groove (7) matches the outer end of the motorcycle sprocket.

5. The motorcycle chain guard according to claim 4, wherein: There are two main slide rods (8), which are symmetrically distributed on the upper and lower sides of the front end of the anti-detachment baffle (5). The outer end of the auxiliary slide rod (11) is connected to the front end of the anti-detachment baffle (5) through and fits.

6. A motorcycle chain guard according to claim 5, wherein: The outer end of the support spring (13) is fixedly installed inside the anti-detachment groove (7), and the support spring (13) is in a compressed state.

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