Wear-resistant motorcycle chain wheel with protection device

Abstract

The utility model relates to a wear-resisting motorcycle chain wheel with a protection device. The wear-resisting motorcycle chain wheel comprises a chain wheel body, two sets of protection parts and at least one connecting block. A sleeving section is formed in the center of the outer end face of the chain wheel body in a protruding mode, and a limiting check ring is formed at the end, back on to the chain wheel body, of the sleeving section. The protection part comprises a positioning support, two first baffles, two threaded columns and two nuts, a semicircular groove is formed in the middle of the positioning support, adjusting grooves are formed in the upper section and the lower section of the positioning support, and the threaded columns are fixedly connected to the sides, facing the positioning support, of the two first baffles. The chain wheel main body is matched with the two groups of protection parts, so that the first baffles in the two groups of protection parts can shield and protect the contact position of the chain wheel main body and the motorcycle chain when the chain wheel main body is matched with the motorcycle chain for transmission, and water drops and impurities are splashed to the contact position of the chain wheel main body and the motorcycle chain to cause abrasion.

Description

Technical Field

[0001] This utility model relates to the field of motorcycle sprocket technology, specifically a wear-resistant motorcycle sprocket with a protective device. Background Technology

[0002] As a widely used means of transportation, the performance and reliability of a motorcycle's transmission system directly affect the vehicle's overall operating efficiency and safety. The sprocket and chain, as key components of the motorcycle's transmission system, bear the crucial responsibility of transmitting engine power to the rear wheel. However, in actual use, the contact points between the sprocket and chain are highly susceptible to erosion from external impurities (such as mud, sand, etc.) and water droplets, leading to accelerated wear, lubrication failure, and consequently affecting transmission efficiency, shortening service life, and even causing safety accidents.

[0003] Current motorcycle sprocket designs often lack effective protective structures, leaving the sprocket and chain directly exposed to harsh environments during operation. When motorcycles travel on muddy, dusty, or rainy roads, the contact points between the sprocket and chain are highly susceptible to splashing debris and water droplets. Over time, this will severely impact the lifespan of the sprocket and chain, increase maintenance costs, and even jeopardize driving safety. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] This invention provides a wear-resistant motorcycle sprocket with a protective device, which solves the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant motorcycle sprocket with a protective device, comprising a sprocket body, two sets of protective parts, and at least one connecting block. A sleeve section is protruding at the center of the outer end face of the sprocket body, and a limiting retaining ring is formed at the end of the sleeve section facing away from the sprocket body. The protective parts include a positioning bracket, two first baffles, two threaded posts, and two nuts. A semi-circular groove is formed in the middle of the positioning bracket, and adjustment grooves are formed in both the upper and lower sections of the positioning bracket. Threaded posts are fixedly connected to the side of each of the two first baffles facing the positioning bracket. The two threaded posts pass through the two adjustment grooves, and each threaded post is fitted with a nut threadedly connected to it, so that the two first baffles are adjustablely fixed to the upper and lower sections of the positioning bracket, respectively. The two sets of protective parts are symmetrically fitted onto the outside of the sleeve section using the semi-circular groove in the middle of the positioning bracket, and the positioning brackets in the two sets of protective parts are connected and fixed to at least one connecting block by fasteners, so that the first baffles in the two sets of protective parts provide protection above and below the sprocket body, respectively.

[0008] Preferably, the two first baffles in the protective part are symmetrically distributed, and the bottom section of the lower first baffle is inclined inward, the top section of the upper first baffle is inclined inward, the diameter of the semi-circular groove in the middle of the first baffle is adapted to the outer diameter of the sleeve section, and the outer diameter of the limiting ring is larger than the outer diameter of the sleeve section.

[0009] In a further preferred embodiment, the wear-resistant motorcycle sprocket with protective device also includes a second baffle. The second baffle is disposed between the two sets of protective parts and is detachably fixedly connected to the two sets of protective parts. The top and bottom of the second baffle are both formed with outwardly protruding steps, and the second baffle is respectively engaged with the first baffle of the two sets of protective parts by means of the two steps. Both the steps of the second baffle and the first baffle are formed with connecting holes, and screws for fixing the second baffle to the adjacent first baffle are inserted into the connecting holes.

[0010] (III) Beneficial Effects

[0011] Compared with the prior art, this utility model provides a wear-resistant motorcycle sprocket with a protective device, which has the following beneficial effects:

[0012] In this utility model, by cooperating with the sprocket body and the two sets of protective parts, the first baffle in the two sets of protective parts can shield and protect the contact position between the sprocket body and the motorcycle chain during the use of the sprocket body in conjunction with the motorcycle chain drive, so that water droplets and impurities splash onto the contact position and cause wear.

[0013] By combining two sets of protective sections with the second baffle, the first baffle in the two sets of protective sections can work with the second baffle to provide a larger area of ​​shielding and protection for the sprocket body, thereby better reducing the splashing of impurities and water droplets onto the sprocket body and improving the service life of the motorcycle sprocket. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the wear-resistant motorcycle sprocket with protective device in Example 1;

[0015] Figure 2 This is a schematic diagram of the wear-resistant motorcycle sprocket with protective device in Embodiment 2;

[0016] Figure 3 This is a structural schematic diagram of the sprocket body according to the implementation plan;

[0017] Figure 4 This is a structural diagram of the protective section according to the implementation plan.

[0018] In the diagram: 10. Sprocket body; 11. Connecting section; 12. Limiting retaining ring; 20. Protective part; 21. Positioning bracket; 22. First baffle; 23. Adjusting groove; 24. Threaded post; 25. Nut; 30. Connecting block; 40. Second baffle. Detailed Implementation

[0019] 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.

[0020] Example 1:

[0021] Please see Figure 1 A wear-resistant motorcycle sprocket with a protective device includes a sprocket body 10, two sets of protective parts 20, and at least one connecting block 30. The two sets of protective parts 20 and the at least one connecting block 30 are installed on the outside of the sprocket body 10 using fasteners such as bolts, and the two sets of protective parts 20 are respectively used to shield and protect the contact position between the motorcycle sprocket and the chain above and below the sprocket body 10.

[0022] See Figure 3 A sleeve section 11 is formed in a raised position at the center of the outer end face of the sprocket body 10 (i.e. the side of the sprocket body facing the outside of the motorcycle after it is connected to the motorcycle drive shaft). A limit retaining ring 12 is formed at the end of the sleeve section 11 facing away from the sprocket body 10. The outer diameter of the limit retaining ring 12 is larger than the outer diameter of the sleeve section 11. The sleeve section 11 and the limit retaining ring 12 are used to cooperate with the positioning and installation of the two sets of protective parts 20.

[0023] See Figure 4The protective section 20 includes a positioning bracket 21, two first baffles 22, two threaded posts 24, and two nuts 25. A semi-circular groove is formed in the center of the positioning bracket 21, and the two sets of protective sections 20 can be symmetrically fitted onto the outside of the connecting section 11 using the semi-circular groove in the center of the positioning bracket 21. The diameter of the semi-circular groove in the center of the first baffle 22 matches the outer diameter of the connecting section 11, and the thickness of the first baffle 22 matches the length of the connecting section 11. The positioning bracket 21 in the protective section 20 is connected and fixed to at least one connecting block 30 by fasteners, thereby preventing interference between the positioning bracket 21 and the sprocket body 10 when it is driven to rotate after being connected to the motorcycle drive shaft. Furthermore, the two positioning brackets 21 can be positioned to prevent separation and detachment from the connecting section 11. Adjustment grooves 23 are formed in both the upper and lower sections of the positioning bracket 21, and the adjustment grooves 23 can be set as oblong as shown in the figure. Each of the two first baffles 22 facing the positioning bracket 21 is fixedly connected to a threaded post 24. The two threaded posts 24 pass through two adjustment slots 23 respectively. Moving the threaded posts 24 along the length of the adjustment slots 23 can adjust the height position of the first baffles 22. Each threaded post 24 is fitted with a nut 25 that is threaded to it. Tightening the nuts 25 can fix the two first baffles 22 to the upper and lower sections of the positioning bracket 21 respectively. The bottom section of the lower first baffle 22 is inclined inward, and the top section of the upper first baffle 22 is inclined inward. The inclined parts of the two first baffles 22 contact the top and bottom of the motorcycle chain respectively. Thus, the first baffles 22 can be used to shield and protect the contact position between the sprocket and the chain. The chain can also be used to limit the first baffles 22 and prevent them from rotating with the sprocket body 10.

[0024] In this embodiment, the sprocket body 10 and the two sets of protective parts 20 are configured to cooperate, so that when the sprocket body 10 is used in conjunction with the motorcycle chain drive, the first baffle 22 of the two sets of protective parts 20 can shield and protect the contact position between the sprocket body 10 and the motorcycle chain, thereby preventing water droplets and impurities from splashing onto the contact position and causing wear.

[0025] Example 2:

[0026] See Figure 2 Based on Embodiment 1, the wear-resistant motorcycle sprocket with protective device also includes a second baffle 40. The second baffle 40 is disposed between the two sets of protective parts 20, and the second baffle 40 is detachably fixedly connected to the two sets of protective parts 20, so that the second baffle 40, together with the first baffle 22 in the two sets of protective parts 20, provides shielding and protection on the outside of the sprocket body 10.

[0027] In this embodiment, the second baffle 40 has outwardly protruding steps at both its top and bottom, and the second baffle 40 engages with the first baffle 22 of the two sets of protective parts 20 via these two steps. Furthermore, both the steps of the second baffle 40 and the first baffle 22 have connecting holes, into which screws are inserted to securely connect the second baffle 40 to the adjacent first baffle 22. Through the cooperative arrangement of the two sets of protective parts 20 and the second baffle 40, the first baffle 22 in the two sets of protective parts 20 can work in conjunction with the second baffle 40 to provide a larger area of ​​protection for the sprocket body 10, thereby better reducing the splashing of impurities and water droplets onto the sprocket body 10 and improving the service life of the motorcycle sprocket.

[0028] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant motorcycle sprocket with a protection device, comprising a sprocket body (10), characterized in that, It also includes two sets of protective parts (20) and at least one connecting block (30). Among them, a sleeve section (11) is formed in a raised position at the center of the outer end face of the sprocket body (10), and a limit retaining ring (12) is formed at the end of the sleeve section (11) facing away from the sprocket body (10). The protective part (20) includes a positioning bracket (21), two first baffles (22), two threaded posts (24) and two nuts (25). A semi-circular groove is formed in the middle of the positioning bracket (21). Adjustment grooves (23) are formed in the upper and lower sections of the positioning bracket (21). Threaded posts (24) are fixedly connected to the side of the two first baffles (22) facing the positioning bracket (21). The two threaded posts (24) pass through the two adjustment grooves (23) respectively, and a nut (25) is fitted on each threaded post (24) and threadedly connected to it, so that the two first baffles (22) are fixedly fixed in the upper and lower sections of the positioning bracket (21) respectively in an adjustable position. The two sets of protective parts (20) are symmetrically fitted on the outside of the sleeve section (11) using the semi-circular groove in the middle of the positioning bracket (21), and the positioning bracket (21) in the two sets of protective parts (20) is connected and fixed to at least one connecting block (30) by fasteners, so that the first baffle (22) in the two sets of protective parts (20) protects the sprocket body (10) above and below the sprocket body (10) respectively.

2. A wear-resistant motorcycle sprocket with a protection device according to claim 1, characterized in that: The two first baffles (22) in the protective part (20) are symmetrically distributed, and the bottom section of the lower first baffle (22) of the two first baffles (22) is inclined inward, and the top section of the upper first baffle (22) of the two first baffles (22) is inclined inward.

3. A wear-resistant motorcycle sprocket with a protection device according to claim 1, characterized in that: The diameter of the semi-circular groove in the middle of the first baffle (22) is adapted to the outer diameter of the sleeve section (11), and the outer diameter of the limiting retaining ring (12) is greater than the outer diameter of the sleeve section (11).

4. A wear-resistant motorcycle sprocket with a protection device according to any one of claims 1-3, characterized in that: It also includes a second baffle (40), which is disposed between the two sets of protective parts (20) and is detachably fixedly connected to the two sets of protective parts (20).

5. A wear-resistant motorcycle sprocket with a protection device according to claim 4, characterized in that: The second baffle (40) has outwardly protruding steps at both the top and bottom, and the second baffle (40) engages with the first baffle (22) of the two sets of protective parts (20) using the two steps respectively.

6. A wear-resistant motorcycle sprocket with a protection device according to claim 5, characterized in that: Both the stepped portion of the second baffle (40) and the first baffle (22) have connecting holes, and screws are inserted into the connecting holes to fix the second baffle (40) and the adjacent first baffle (22).

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