Wear-resistant long-service-life motorcycle chain wheel
By incorporating a through-hole structure and cover plate design between the motorcycle sprocket ring and the reinforcing disc, the wear problem caused by mud and sand entering the sprocket meshing area is solved, achieving a wear-resistant and long-life sprocket effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- RENQIU YATE MOTORCYCLE PARTS CO LTD
- Filing Date
- 2025-04-10
- Publication Date
- 2026-04-21
AI Technical Summary
During use, mud and sand can get into the meshing point between the chain and the sprocket of a motorcycle, causing wear on the sprocket and affecting its service life.
A wear-resistant and long-life motorcycle sprocket was designed. By setting a through-hole structure between the sprocket ring and the reinforcing disc, combined with the design of the cover plate, an inner cavity is formed to collect and store fallen dust and impurities, thereby reducing wear.
It effectively reduces wear between the sprocket and the chain, extends the service life of the sprocket, and prevents impurities from affecting other parts of the vehicle body.
Smart Images
Figure CN224146106U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motorcycle sprocket technology, specifically a wear-resistant and long-life motorcycle sprocket. Background Technology
[0002] Motorcycles are two- or three-wheeled vehicles driven by gasoline engines and steered by the front wheel operated by handlebars. They are lightweight, flexible, and fast, and are widely used for patrol, passenger and freight transportation, as well as sports equipment. Motorcycles commonly use a combination of sprockets and chains for transmission.
[0003] When a motorcycle is in motion, mud and sand on the road surface are easily thrown out and come into contact with the sprocket. As the sprocket rotates, some of the mud and sand will enter the meshing point between the chain and the sprocket, causing friction and damage to the sprocket. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] This invention provides a wear-resistant and long-life motorcycle sprocket, solving the problem that mud and sand entering the meshing point between the chain and the sprocket cause friction and damage to the sprocket.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant and long-life motorcycle sprocket, comprising a sprocket ring, a reinforcing disc, and a cover plate. The sprocket ring has an internal cavity, the reinforcing disc is inserted into the internal cavity of the sprocket ring, and the reinforcing disc is detachably connected and fixed to the sprocket ring. An opening is formed on one side of the reinforcing disc, and the cover plate is inserted into the opening of the reinforcing disc, and the cover plate is detachably connected and fixed to the reinforcing disc. A plurality of interconnected through-hole structures are provided between the sprocket ring and the reinforcing disc, so that the inner cavity enclosed by the reinforcing disc and the cover plate can accommodate impurities that fall into the sprocket ring.
[0008] Preferably, the sprocket ring includes an outer ring, on the outer wall of which a plurality of sprocket teeth are uniformly formed radially, a tooth root is formed between every two adjacent sprocket teeth, and at least one outlet hole penetrating the outer ring is formed at each tooth root.
[0009] In a further preferred embodiment, the reinforcing disc includes an inner disc, multiple support bars, an inner ring, multiple connecting holes, and a positioning ring. Multiple support bars are uniformly formed radially on the outer wall of the inner disc. The ends of the support bars away from the inner disc are fixedly connected to the inner wall of the inner ring. At least one connecting hole penetrating the inner ring is provided between every two adjacent support bars. The positioning ring is formed at the outer edge of the inner ring on the side with an opening. The connecting hole is coaxially aligned with adjacent sprocket teeth. The diameters of the connecting hole and the sprocket teeth are matched to form a through-hole structure that connects the sprocket ring and the reinforcing disc. The outer diameter of the positioning ring is larger than the inner diameter of the outer ring, and the side of the positioning ring facing the outer ring is in close contact with the outer ring. The positioning ring and the outer ring are fixed together by bolts. The width of the support bars is smaller than the depth of the inner ring's cavity, so that the opening of the inner ring has a gap for inserting a cover plate.
[0010] In a further preferred embodiment, the cover plate includes a fastening plate and a positioning plate, the fastening plate being inserted into and secured to the opening of the inner ring, and the positioning plate being formed on the side of the fastening plate facing away from the inner ring, with the diameter of the positioning plate being larger than the inner diameter of the inner ring.
[0011] (III) Beneficial Effects
[0012] Compared with the prior art, this utility model provides a wear-resistant and long-life motorcycle sprocket, which has the following beneficial effects:
[0013] In this invention, the coordinated arrangement of the sprocket ring, reinforcing disc, and cover plate allows dust and impurities falling from the surface of the sprocket ring during transmission to be temporarily stored in the inner cavity enclosed by the diameter of the reinforcing disc and cover plate through the through-hole structure. This reduces the wear between the sprocket ring and the chain caused by the accumulation of impurities and dust on the sprocket ring, and also prevents the falling impurities and dust from being thrown into the motorcycle body and affecting the normal use of other components. Attached Figure Description
[0014] Figure 1 This is an exploded view of a wear-resistant, long-life motorcycle sprocket according to the implementation plan.
[0015] Figure 2 for Figure 1 A schematic diagram of the assembled structure of a medium wear-resistant, long-life motorcycle sprocket;
[0016] Figure 3 This is a schematic diagram of the sprocket ring structure according to the implementation plan;
[0017] Figure 4 This is a structural schematic diagram of the reinforced plate according to the implementation plan;
[0018] Figure 5 This is a structural schematic diagram of the cover plate according to the implementation plan.
[0019] In the diagram: 10, sprocket ring; 11, outer ring; 12, sprocket tooth; 13, tooth root; 14, guide hole; 20, reinforcing plate; 21, inner plate; 22, support bar; 23, inner ring; 24, connecting hole; 25, positioning ring; 30, cover plate; 31, fastening plate; 32, positioning plate. Detailed Implementation
[0020] 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.
[0021] Please see Figure 1 and Figure 2 A wear-resistant, long-life motorcycle sprocket includes a sprocket ring 10, a reinforcing disc 20, and a cover plate 30. The sprocket ring 10 has an internal cavity, and the reinforcing disc 20 is inserted into the internal cavity of the sprocket ring 10, and the reinforcing disc 20 is detachably connected and fixed to the sprocket ring 10. An opening is formed on one side of the reinforcing disc 20, and the cover plate 30 is inserted into the opening of the reinforcing disc 20, and the cover plate 30 is detachably connected and fixed to the reinforcing disc 20, forming an inner cavity between the cover plate 30 and the reinforcing disc 20. Multiple interconnected through-hole structures are provided between the sprocket ring 10 and the reinforcing disc 20, allowing impurities and debris falling from the sprocket ring 10 during the overall operation of the motorcycle sprocket to fall into the inner cavity enclosed by the reinforcing disc 20 and the cover plate 30.
[0022] See Figure 3 The sprocket ring 10 includes an outer ring 11. Multiple sprocket teeth 12 are uniformly formed radially on the outer wall of the outer ring 11. A tooth root 13 is formed between every two adjacent sprocket teeth 12. At least one outlet hole 14 is formed at each tooth root 13, which penetrates the outer ring 11. This allows dust and impurities at the tooth root 13 to fall off through the outlet hole 14 during the rotation of the sprocket ring 10, preventing accumulation and wear between the sprocket teeth 12 and the chain.
[0023] See Figure 4The reinforcing disc 20 includes an inner disc 21, multiple support bars 22, an inner ring 23, multiple connecting holes 24, and a positioning ring 25. Multiple support bars 22 are uniformly formed radially on the outer wall of the inner disc 21, and the ends of the support bars 22 away from the inner disc 21 are fixedly connected to the inner wall of the inner ring 23. At least one connecting hole 24 penetrating the inner ring 23 is provided between every two adjacent support bars 22. The connecting hole 24 is coaxially aligned with adjacent sprocket teeth 12, and the diameters of the connecting hole 24 and the sprocket teeth 12 are matched to form a through-hole structure that connects the sprocket ring 10 and the reinforcing disc 20. The positioning ring 25 is formed on the outer edge of the inner ring 23 with an opening. The outer diameter of the positioning ring 25 is larger than the inner diameter of the outer ring 11, and the side of the positioning ring 25 facing the outer ring 11 is in close contact with the outer ring 11. The positioning ring 25 and the outer ring 11 can be fixed together by bolts. The width of the support bar 22 is less than the depth of the inner cavity of the inner ring 23, so that the opening of the inner ring 23 has a gap for the cover plate 30 to be inserted.
[0024] See Figure 5 The cover plate 30 includes a fastening plate 31 and a positioning plate 32. The fastening plate 31 can be inserted into the opening of the inner ring 23 and locked therein for connection and fixation. The positioning plate 32 is formed on the side of the fastening plate 31 facing away from the inner ring 23, and the diameter of the positioning plate 32 is larger than the inner diameter of the inner ring 23, so that the cover plate 30 can be inserted into the inner ring 23 in a limited position. When cleaning is required, the cover plate 30 can be removed to clean the impurities and dust accumulated in the inner ring 23.
[0025] 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 long life, wear resistant motorcycle sprocket, characterized by, The device includes a sprocket ring (10), a reinforcing disc (20), and a cover plate (30). The sprocket ring (10) has an internal cavity. The reinforcing disc (20) is inserted into the internal cavity of the sprocket ring (10) and is detachably connected and fixed to the sprocket ring (10). An opening is formed on one side of the reinforcing disc (20), and the cover plate (30) is inserted into the opening of the reinforcing disc (20) and is detachably connected and fixed to the reinforcing disc (20). A plurality of interconnected through holes are provided between the sprocket ring (10) and the reinforcing disc (20) so that the inner cavity enclosed by the reinforcing disc (20) and the cover plate (30) can accommodate impurities that fall into the sprocket ring (10).
2. A long wearing motorcycle sprocket that resists wear according to claim 1, wherein: The sprocket ring (10) includes an outer ring (11), on the outer wall of the outer ring (11) a plurality of sprocket teeth (12) are uniformly formed along its radial direction, a tooth root (13) is formed between every two adjacent sprocket teeth (12), and at least one outlet hole (14) penetrating the outer ring (11) is formed at each tooth root (13).
3. A long wearing motorcycle sprocket that resists wear according to claim 2, wherein: The reinforcing plate (20) includes an inner plate (21), multiple support bars (22), an inner ring (23), multiple connecting holes (24), and a positioning ring (25). Multiple support bars (22) are uniformly formed radially on the outer wall of the inner plate (21). The ends of the multiple support bars (22) away from the inner plate (21) are fixedly connected to the inner wall of the inner ring (23). At least one connecting hole (24) penetrating the inner ring (23) is provided between every two adjacent support bars (22). The positioning ring (25) is formed at the outer edge of the inner ring (23) on the side with the opening.
4. A long wearing motorcycle sprocket that resists wear according to claim 3, wherein: The connecting hole (24) is coaxially aligned with the adjacent sprocket tooth (12), and the diameters of the connecting hole (24) and the sprocket tooth (12) are matched to form a through hole structure that connects the sprocket ring (10) and the reinforcing disc (20).
5. A long wearing motorcycle sprocket that resists wear according to claim 3, wherein: The outer diameter of the positioning ring (25) is larger than the inner diameter of the outer ring (11), and the side of the positioning ring (25) facing the outer ring (11) is in close contact with the outer ring (11). The positioning ring (25) and the outer ring (11) are fixed together by bolts.
6. A wear-resistant, long-life motorcycle sprocket according to claim 3, characterized in that: The width of the support bar (22) is less than the depth of the inner cavity of the inner ring (23), so that the opening of the inner ring (23) has a gap for the cover plate (30) to be inserted.
7. A long wearing motorcycle sprocket that resists wear according to claim 6, wherein: The cover plate (30) includes a fastening plate (31) and a positioning plate (32). The fastening plate (31) is inserted into the opening of the inner ring (23) and is fastened thereto. The positioning plate (32) is formed on the side of the fastening plate (31) facing away from the inner ring (23), and the diameter of the positioning plate (32) is larger than the inner diameter of the inner ring (23).