A rubber-hung sprocket with sewage discharge function
By designing an annular noise reduction ring and sewage drain structure on the rubber-mounted sprocket, the problem of the existing noise reduction sprocket lacks sewage discharge capabilities is solved, and the directional discharge of pollutants and the safety of the chain system is improved.
Patent Information
- Application Number
- CN202421690760.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-17
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-07-17
AI Technical Summary
The existing noise reduction sprockets lack the ability to discharge pollutants, such as silt particles, easily enter the sprocket tooth valley or the hinge pair of the chain, causing safety hazards.
A rubber hanging sprocket with sewage discharge function is designed. There are ring-shaped noise reduction rings on both sides of the sprocket. The inner surface of the noise reduction ring is closely fitted with the outer surface of the sprocket, and a sewage discharge groove is evenly distributed on the circumferential surface. The pollutants are guided to the outside through the guide groove structure.
It realizes the directional discharge of pollutants on the sprocket while reducing noise, reducing the possibility of pollutants entering the tooth valley or hinge pair, and improving the safety of the chain system.
Smart Images
Figure CN222702513U_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of chain transmission, and specifically relates to a rubber-coated sprocket with a sewage discharge function. Background Art
[0002] The sprocket is a mechanical transmission component, which is mainly used in the field of chain transmission. During the operation of the motorcycle, the engine drive sprocket and the chain mesh with each other, causing collisions and generating a lot of noise. In order to solve this technical problem, noise reduction sprockets have appeared in the prior art. This type of sprocket has noise reduction rings on both sides of the sprocket, which can achieve a certain noise reduction effect. However, this type of noise reduction sprocket also has the following defects: the motorcycle drive sprocket is located outside the motorcycle engine, and the working environment is complex. Although a protective cover is provided, the circumference of the noise reduction ring is close to the position of the sprocket tooth valley, so the sand particles in the pollutants on the noise reduction ring are easy to enter the tooth valley or the hinge pair of the chain, causing a greater safety hazard. The existing noise reduction sprocket lacks sewage discharge capacity and cannot overcome this defect. Utility Model Content
[0003] In response to the problems of the prior art, the present invention discloses a rubber-coated sprocket with a sewage discharge function. The rubber-coated sprocket has the sewage discharge capability. While reducing noise, it can direct the discharge of pollutants on the sprocket, thereby reducing the possibility of particulate matter entering the tooth valley or the hinge pair of the chain, and effectively ensuring the safety of the chain system.
[0004] To achieve the above purpose, the novel technical solution used is:
[0005] A rubber-coated sprocket with a sewage discharge function comprises a sprocket body. Two side surfaces of the sprocket body are coaxially provided with annular noise reduction rings. The inner surface of the noise reduction ring is tightly fitted with the outer surface of the sprocket body. A plurality of sewage discharge grooves are evenly distributed on the circumferential surface of the noise reduction ring.
[0006] Preferably, the noise reduction ring is a rubber ring made of rubber material, and the radius of the noise reduction ring is smaller than the radius of the tooth valley of the sprocket body.
[0007] Preferably, the drainage trough is a patterned groove structure, and the groove structure constitutes a guide groove for pollutants.
[0008] Preferably, the drainage groove is a V-shaped groove, and both ends of the V-shaped groove extend to the two side edges of the circumferential surface of the rubber ring respectively and penetrate the inner surface or the outer surface of the rubber ring.
[0009] Preferably, an integrally formed annular boss is coaxially provided on the outer periphery of the mounting hole of the sprocket body, the rubber ring is provided on the outer side of the annular boss, and the inner ring surface of the rubber ring is tightly fitted with the outer ring surface of the annular boss.
[0010] Preferably, the outer surface of the rubber ring is flush with the outer surface of the annular boss.
[0011] Preferably, the sprocket body is located on the wheel body outside the annular boss and has a plurality of through holes evenly distributed around the axis for the rubber material to pass through, and two rubber rings are integrally formed on both sides of the sprocket body by injection molding.
[0012] Preferably, the rubber ring is made of nitrile rubber material.
[0013] Preferably, the sprocket body is made by powder metallurgy or machining.
[0014] The beneficial effects of the new rubber-coated sprocket with sewage discharge function are:
[0015] The novel rubber-coated sprocket has the ability to discharge pollutants. While reducing noise, it can directionally discharge pollutants on the sprocket to avoid pollutant accumulation and reduce the possibility of particles entering the tooth valley or the hinge pair of the chain, effectively ensuring the safety of the chain system. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a side view structural schematic diagram of the new model.
[0017] Figure 2 It is a schematic diagram of the side sectional structure of the present invention.
[0018] Figure 3 This is a front view structural diagram of the new model (after removing the noise reduction circle).
[0019] Figure 4 This is an enlarged view of the local structure at A of the new model.
[0020] 1. Sprocket body; 2. Noise reduction ring; 3. Drain groove; 4. Annular boss; 5. Mounting hole; 6. Gear teeth; 7. Through hole; 8. Spline keyway; 9. Annular groove. DETAILED DESCRIPTION
[0021] The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
[0022] The following embodiments may be understood as a part of a local structure or method that is expressed separately in the present invention, or may be understood as a combination of the embodiments to explain the connotation of a larger structure or method of the present invention.
[0023] In the initial embodiment, the present invention is a rubber-coated sprocket with a sewage discharge function, such as Figure 1-4As shown, it includes a sprocket body 1, and the two side surfaces of the sprocket body 1 are coaxially provided with annular noise reduction rings 2, the inner surface of the noise reduction ring 2 is tightly fitted with the outer surface of the sprocket body 1, and a plurality of drainage grooves 3 are evenly distributed on the circumferential surface of the noise reduction ring 2.
[0024] In this embodiment, the design of the noise reduction ring 2 can adopt various types of noise reduction rings in the prior art, and the requirement is that the inner surface of the noise reduction ring 2 is tightly fitted with the outer surface of the sprocket body 1 to prevent pollutants from entering. There are several sewage grooves 3 evenly distributed on the circumferential surface of the noise reduction ring 2, which are used to remove pollutants and reduce safety hazards.
[0025] In a further embodiment, Figure 1-4 As shown, the noise reduction ring 2 is a rubber ring made of rubber material, and the radius of the noise reduction ring 2 is smaller than the radius of the tooth valley of the sprocket body 1. The size difference between the two can be set as needed, the purpose is to make the circumferential surface of the noise reduction ring and the tooth valley open a certain distance, further reducing the possibility of contaminants entering the tooth valley or hinge pair.
[0026] In a further embodiment, Figure 1 , 4 As shown, the drainage groove 3 is a patterned groove structure, and the groove structure constitutes a guide groove for pollutants. The guide groove means that the pollutants can be discharged from the sprocket body through the guide groove. The specific structural design of the guide groove can refer to the pattern design of a given automobile tire.
[0027] In a further embodiment, Figure 1 , 4 As shown, the drainage groove 3 is a V-shaped groove, and the two ends of the V-shaped groove extend to the two side edges of the circumferential surface of the rubber ring and penetrate the inner surface or outer surface of the rubber ring. In specific use, the sprocket rotates in the direction away from the tip of the V-shaped groove. Due to the effects of centrifugal force and inertia, the pollutants on the surface of the rubber ring first enter the V-shaped groove, then gather at the tip of the V-shaped groove, and finally are thrown out from the tip along the tangent of the sprocket body, thereby achieving directional drainage. The groove width of the V-shaped groove can be consistent, but the groove width from the outer end of the V-shaped groove to the tip can also be gradually widened, so that the groove body at the tip can accommodate more pollutants, which is convenient for the gathering and discharge of pollutants.
[0028] In a further embodiment, Figure 2 , 3 As shown, an integrally formed annular boss 4 is coaxially provided on the outer periphery of the mounting hole 5 of the sprocket body 1, and the rubber ring is provided on the outer side of the annular boss 4, and the inner ring surface of the rubber ring is tightly fitted with the outer ring surface of the annular boss 4, wherein the annular boss plays a role in positioning the rubber ring.
[0029] In a further embodiment, Figure 2As shown, the outer surface of the rubber ring is flush with the outer surface of the annular boss 4.
[0030] In a further embodiment, Figure 1-4 As shown in the figure, the sprocket body 1 is located outside the annular boss 4 and has a plurality of through holes 7 evenly distributed around the axis for the rubber material to pass through. Two rubber rings are integrally formed on both sides of the sprocket body 1 by injection molding. Such a design can make the connection between the two rubber rings and the sprocket body 1 tighter and extend the service life of the rubber rings. The contact surface between the sprocket body and the rubber ring can be a plane or a flat surface. Figure 3 As shown, the surface of the sprocket body 1 where the outer side of the annular boss 4 is located is coaxially provided with a plurality of annular grooves 9, which are used to embed the rubber material so that the rubber ring and the sprocket body 1 are more tightly combined.
[0031] In a further embodiment, Figure 1-4 As shown, the rubber ring is made of nitrile rubber material; the sprocket body 1 is made of powder metallurgy or machining technology.
Claims
1. A rubber-coated sprocket with sewage discharge function, characterized by: It comprises a sprocket body, wherein two sides of the sprocket body are coaxially provided with annular noise reduction rings, the inner surface of the noise reduction ring is closely fitted with the outer surface of the sprocket body, and a plurality of drainage grooves are evenly distributed on the circumferential surface of the noise reduction ring.
2. A rubber-coated sprocket with sewage discharge function as claimed in claim 1, characterized in that: The noise reduction ring is a rubber ring made of rubber material, and the radius of the noise reduction ring is smaller than the radius of the tooth valley of the sprocket body.
3. A rubber-coated sprocket with sewage discharge function as claimed in claim 2, characterized in that: The sewage trough is a patterned groove structure, and the groove structure constitutes a guide groove for pollutants.
4. A rubber-coated sprocket with sewage discharge function as claimed in claim 3, characterized in that: The drainage groove is a V-shaped groove, and the two ends of the V-shaped groove extend to the two side edges of the circumferential surface of the rubber ring respectively and penetrate the inner surface or the outer surface of the rubber ring.
5. A rubber-coated sprocket with sewage discharge function as claimed in claim 4, characterized in that: An integrally formed annular boss is coaxially arranged on the outer periphery of the mounting hole of the sprocket body, and the rubber ring is arranged on the outer side of the annular boss, and the inner ring surface of the rubber ring is tightly fitted with the outer ring surface of the annular boss.
6. A rubber-coated sprocket with sewage discharge function as claimed in claim 5, characterized in that: The outer surface of the rubber ring is flush with the outer surface of the annular boss.
7. A rubber-coated sprocket with sewage discharge function as claimed in claim 6, characterized in that: The sprocket body is located on the wheel body outside the annular boss and has a plurality of through holes evenly distributed around the axis for rubber material to pass through. Two rubber rings are integrally formed on both sides of the sprocket body by injection molding.
8. A rubber-coated sprocket with a sewage discharge function as claimed in any one of claims 2 to 7, characterized in that: The rubber ring is made of nitrile rubber material.
9. A rubber-coated sprocket with sewage discharge function as described in any one of claims 1 to 7, characterized in that: The sprocket body is made by powder metallurgy or machining technology.