CN213039779U - Polygonal noise-reducing rubber-coated chain wheel - Google Patents
Polygonal noise-reducing rubber-coated chain wheel Download PDFInfo
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- CN213039779U CN213039779U CN202020788072.8U CN202020788072U CN213039779U CN 213039779 U CN213039779 U CN 213039779U CN 202020788072 U CN202020788072 U CN 202020788072U CN 213039779 U CN213039779 U CN 213039779U
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- sprocket
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Abstract
The utility model mainly discloses a rubber coating sprocket of making an uproar falls in polygon, its technical scheme: including sprocket skeleton and yielding rubber, the yielding rubber appearance is the polygon, and polygon limit number is the same with sprocket skeleton number of teeth, keeps the link joint side to be the face contact with yielding rubber, and the limit between the yielding rubber is adjacent is provided with the dashpot, has certain buffering effect during the atress, and yielding rubber is designed into the polygon, and area of contact reaches the at utmost in the design, and when rubber received extrusion deformation, because there was sufficient lifting surface area, can effectively improve yielding rubber's life-span.
Description
Technical Field
The utility model relates to a sprocket technical field, especially a rubber coating sprocket of making an uproar falls in polygon.
Background
During the transmission process of the chain wheel, meshing noise is inevitably generated. Taking roller chain transmission as an example, in the transmission process, the rollers on the chain directly impact with the bottom of the sprocket teeth to generate noise. At present, the noise reduction requirement of users on the chain transmission system is higher and higher, and particularly in the field of engine timing systems, the NVH requirement on the chain system is almost strict. There is a need for a technique for reducing chain and sprocket meshing noise that improves the NVH performance of a chain drive system.
Present patent application number 201821169369.5 discloses a sprocket of making an uproar falls, including sprocket skeleton and yielding rubber, yielding rubber surface distribution has the dashpot, when guaranteeing that rubber receives extrusion deformation, has the space to allow rubber to warp, disperses the link joint to yielding rubber's impact force, and the relative production technology of this kind of structure becomes complicated at present, and when rubber received extrusion deformation, the atress area was little, and yielding rubber's life-span can reduce.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model provides a rubber coating sprocket of making an uproar falls in polygon has simple structure, promotes extrusion deformation intensity, can effectively improve yielding rubber's life-span.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a polygon rubber coating sprocket of making an uproar that falls, includes sprocket skeleton and yielding rubber, the yielding rubber appearance is the polygon, and polygon limit number is the same with sprocket skeleton tooth number, keeps the link joint side to be the face contact with yielding rubber, and the limit between the yielding rubber is adjacent is provided with the dashpot, has certain buffering effect during the atress, combine or the gluing agent bonds through the primer between sprocket skeleton and the yielding rubber. In the use, the yielding rubber can not be separated from the chain wheel framework.
Preferably: the chain wheel framework is made of powder metallurgy or steel materials.
Preferably: the chain wheel framework is provided with a key groove on the inner side, and a protruding part is arranged above the key groove. The thickness of the base body at the key groove is thickened, and the strength is improved.
The utility model discloses it does to have beneficial effect:
the utility model discloses a damping rubber durability can be good, and for improving damping rubber's life, damping rubber is designed into the polygon, and polygonal limit number is the same with the sprocket tooth number, keeps the link joint side to be the face contact with damping rubber. When the chain is surrounded on the chain wheel, the chain plate is firstly contacted with the rubber, and the damping rubber is polygonal, so that the side surface of the chain plate is in surface contact with the damping rubber, and the contact area reaches the maximum degree in design. When the rubber is extruded and deformed, the service life of the damping rubber can be effectively prolonged due to the sufficient stressed area.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
fig. 3 is a schematic view of the three-dimensional structure of the present invention.
Reference numerals: 1. a sprocket skeleton; 2. damping rubber; 3. a boss portion; 4. a buffer tank.
Detailed Description
The preferred embodiments of the present invention will be further described in detail with reference to the accompanying drawings.
1-3, including sprocket skeleton 1 and yielding rubber 2, yielding rubber 2 appearance is the polygon, and the polygon limit number is the same with sprocket skeleton 1 tooth number, and the limit between yielding rubber 2 is adjacent is provided with dashpot 4, has certain buffering effect during the atress. Sprocket skeleton 1 is made by powder metallurgy or steel material, combine or gluing agent bonding through the primer between sprocket skeleton 1 and yielding rubber 2, in the use, yielding rubber 2 can not break away from sprocket skeleton 1. The chain wheel framework 1 is provided with a key groove on the inner side, and a protruding part 3 is arranged above the key groove. The thickness of the base body at the key groove is thickened, and the strength is improved. Through the existence of yielding rubber 2 for chain and sprocket meshing in-process, the link joint earlier with yielding rubber 2 contact, link joint extrusion yielding rubber 2 warp the back, the roller on the chain falls into the sprocket tooth bottom again, through the link joint with yielding rubber 2 contact earlier the buffering come from the kinetic energy of chain, weaken the impact of roller to the sprocket tooth bottom, with this noise that reduces chain and sprocket meshing production, can effectively reduce the meshing noise of chain and sprocket, improve chain drive system's NVH performance.
The utility model discloses a 2 durability of yielding rubber are good, and for improving 2 life of yielding rubber, yielding rubber 2 is designed into the polygon, and polygonal limit number is the same with the sprocket number of teeth, keeps the link joint side to be the face contact with yielding rubber 2. When the chain encloses the chain on the sprocket, the link joint earlier with rubber contact, and because damping rubber 2 is the polygon for the link joint side is face contact with damping rubber 2, area of contact reaches the at utmost in the design. When the rubber is extruded and deformed, the service life of the damping rubber 2 can be effectively prolonged due to the sufficient stressed area.
The above embodiments are only used for explaining the inventive concept of the present invention, and not for limiting the protection of the claims of the present invention, and all the insubstantial modifications of the present invention made by using the above inventive concept shall fall within the protection scope of the present invention.
Claims (3)
1. The utility model provides a rubber coating sprocket of making an uproar falls in polygon, includes sprocket skeleton and yielding rubber, its characterized in that: the yielding rubber appearance is the polygon, and polygon limit number is the same with sprocket skeleton number of teeth, and the limit between the yielding rubber is adjacent is provided with the dashpot, combine or the gluing agent bonds through the primer between sprocket skeleton and the yielding rubber.
2. The polygonal noise reducing encapsulated sprocket as set forth in claim 1, wherein: the chain wheel framework is made of powder metallurgy or steel materials.
3. The polygonal noise reducing encapsulated sprocket as set forth in claim 1, wherein: the chain wheel framework is provided with a key groove on the inner side, and a protruding part is arranged above the key groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020788072.8U CN213039779U (en) | 2020-05-13 | 2020-05-13 | Polygonal noise-reducing rubber-coated chain wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020788072.8U CN213039779U (en) | 2020-05-13 | 2020-05-13 | Polygonal noise-reducing rubber-coated chain wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213039779U true CN213039779U (en) | 2021-04-23 |
Family
ID=75520013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020788072.8U Active CN213039779U (en) | 2020-05-13 | 2020-05-13 | Polygonal noise-reducing rubber-coated chain wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213039779U (en) |
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2020
- 2020-05-13 CN CN202020788072.8U patent/CN213039779U/en active Active
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