CN203067686U - Vibration-reducing timing chain transmission system - Google Patents
Vibration-reducing timing chain transmission system Download PDFInfo
- Publication number
- CN203067686U CN203067686U CN 201220708992 CN201220708992U CN203067686U CN 203067686 U CN203067686 U CN 203067686U CN 201220708992 CN201220708992 CN 201220708992 CN 201220708992 U CN201220708992 U CN 201220708992U CN 203067686 U CN203067686 U CN 203067686U
- Authority
- CN
- China
- Prior art keywords
- chain
- gear teeth
- damping
- crankshaft sprocket
- vibration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a vibration-reducing timing chain transmission system. The vibration-reducing timing chain transmission system aims at solving the problem that an existing timing chain transmission system is large in vibration and noise during a transmission process. The vibration-reducing timing chain transmission system comprises a crankshaft sprocket, camshaft sprockets and chain guiding rails, wherein a chain is connected between the crankshaft sprocket and the camshaft sprockets, the chain guiding rails are arranged on the outer sides of the chain between the crankshaft sprocket and the camshaft sprockets, the chain is in lap joint on the chain guiding rails, a ring of gear teeth are arranged on the outer wall of the crankshaft sprocket, the chain is meshed with the gear teeth in a transmission mode, two elastic vibration-reducing rings are connected on the crankshaft sprocket in a sleeved mode, the two elastic vibration-reducing rings are arranged on two sides of the gear teeth, and chain boards on two sides of the chain are in lap joint with the outer walls of the two elastic vibration-reducing rings. During a transmission process of the chain, the elastic vibration-reducing rings can effectively reduce impact vibration and impact noise which are generated during the process when the chain is meshed with the gear teeth, abrasion of the chain and abrasion of the gear teeth are reduced, and NVH performance of an automatic engine is improved.
Description
Technical field
The utility model relates to a kind of transmission system, and more particularly, it relates to a kind of timing chain transmission system that can vibration and noise reducing.
Background technique
Motor car engine timing chain transmission system, have distinguishing features such as compact structure, transmission efficiency height, reliability and wear resistance are good, maintenance-free because of it and be widely used in the motor car engine timing transmission system, but the shortcoming that its rotational noise is big, the transmission resistance is big also can't effectively solve always.Engagement and engine speed that noise and vibration are mainly derived from crankshaft timing sprocket and timing chain fluctuate suddenly to the impact of chain transmission system, and automobile does not all solve the big problem of vibrations and noise well mostly at present.
Chinese patent notification number CN202418449U, a kind of timing stretcher and timing chain transmission system are disclosed, comprise timing stretcher, air inlet side rails, exhaust side guide rail, chain and crankshaft sprocket, stretcher comprises housing, is fixed in the piston hole of housing and limits its flexible jump ring with respect to the flexible piston of housing and with piston, the outer surface of piston is processed with ratchet, housing is provided with the jump ring groove, jump ring makes the motion of jump ring in housing be limited expanding when suitable ratchet direction is moved.This timing chain drive system structure compactness, diverse in function, reliability height, but it in transmission, vibrate and noise bigger.
The model utility content
The utility model has overcome existing timing chain transmission system and has vibrated in the process of transmission and the bigger deficiency of noise, a kind of vibration damping timing chain transmission system is provided, it in the process of transmission, vibrate and noise all less, improved the NVH performance of motor car engine.
In order to solve the problems of the technologies described above, the utility model is by the following technical solutions: a kind of vibration damping timing chain transmission system, comprise crankshaft sprocket, camshaft sprocket, chain guide, connect chain between crankshaft sprocket and the camshaft sprocket, chain guide is arranged on the outside of the chain between crankshaft sprocket and the camshaft sprocket, chain is overlapped on the chain guide, the outer wall of crankshaft sprocket is provided with circle gear teeth, chain and gear teeth meshing transmission, be socketed with two elastic damping rings on the crankshaft sprocket, two damping rings are separately positioned on the both sides of the gear teeth, the carrier bar of chain both sides respectively with the outer wall of two damping rings overlap joint.At crankshaft sprocket damping ring is set, the carrier bar of chain is overlapped on the outer wall of damping ring, in the process of chain transmission, and impact shock and noise that damping ring produces in the time of can reducing chain and gear teeth meshing effectively, reduce the wearing and tearing of chain and the gear teeth, prolong their working life.Vibration damping timing chain transmission system in the process of transmission, vibrate and noise all less, improved the NVH performance of motor car engine.
As preferably, damping ring adopts rubber material to make.Rubber material is wear-resistant, good springiness, vibration damping and excellent noise reduction effect.
As preferably, damping ring is connected with the crankshaft sprocket interference fit.Connect by interference fit between damping ring and the crankshaft sprocket, connect simple and reliable.
As preferably, be coated with the tackiness agent that is useful on bonding damping ring and crankshaft sprocket between damping ring inwall and the crankshaft sprocket outer wall.It is tightr that coated with adhesive makes being connected of damping ring and crankshaft sprocket between damping ring inwall and crankshaft sprocket outer wall, effectively prevents the damping ring axial float.
As preferably, two damping rings are fitted in respectively on the bi-side of the gear teeth, and are coated with between damping ring and the gear teeth and are useful on the tackiness agent that connects damping ring and the gear teeth.Damping ring can deform after damping ring is subjected to the effect of carrier bar pressure, because damping ring is one by tackiness agent and gear bonding, also can not split away off from the gear teeth although damping ring deforms, and has guaranteed the reliability that damping ring connects.
As preferably, the external diameter of damping ring is greater than the root diameter of the gear teeth, and the external diameter of damping ring is less than the standard pitch diameter of the gear teeth.The external diameter of damping ring is limited in the scope of the root diameter of the gear teeth and standard pitch diameter, can not make the pressure between carrier bar and the damping ring too big because the vibration damper outside dimension is too big, increase the wearing and tearing of damping ring, can not make the pressure between carrier bar and the damping ring too little because the damping ring outside dimension is too little yet, reduce vibration damping and the noise reduction of damping ring.
Compared with prior art, the beneficial effects of the utility model are: (1) vibration damping timing chain transmission system in the process of transmission, vibrate and noise all less, improved the NVH performance of motor car engine; (2) long service life of the gear teeth of vibration damping timing chain transmission system and chain.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is the partial enlarged drawing of crankshaft sprocket of the present utility model position;
Among the figure: 1, crankshaft sprocket, 2, camshaft sprocket, 3, chain guide, 4, chain, 5, the gear teeth, 6, damping ring, 7, carrier bar, 8, stretcher.
Embodiment
Below by specific embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is further described specifically:
Embodiment: a kind of vibration damping timing chain transmission system (referring to accompanying drawing 1), comprise crankshaft sprocket 1, camshaft sprocket 2, chain guide 3, connect chain 4 between crankshaft sprocket 1 and the camshaft sprocket 2, camshaft sprocket 2 has two to be arranged on the top, crankshaft sprocket 1 is arranged on the below, chain 4 and crankshaft sprocket 1, camshaft sprocket 2 engagements.Chain guide 3 is arranged on the outside of the chain 4 between crankshaft sprocket 1 and the camshaft sprocket 2, and two chain guides 3 are separately positioned on the outside of left and right sides chain 4, and chain 4 is overlapped on the chain guide 3.Be provided with stretcher 8 near chain guide 3 positions, 8 pairs of chains of stretcher carry out tensioning.The outer wall of crankshaft sprocket 1 is provided with circle gear teeth 5, and chain 4 and the gear teeth 5 engagement driving are socketed with two elastic damping rings 6 on the crankshaft sprocket 1, and damping ring 6 adopts rubber materials to make, and rubber wear-resisting damage, good springiness, effectiveness in vibration suppression are obvious.Two damping rings 6 are separately positioned on the both sides of the gear teeth 5, the carrier bar 7 of chain 4 both sides respectively with the outer wall of two damping rings 6 overlap joint.The external diameter of damping ring 6 is greater than the root diameter of the gear teeth 5, and the external diameter of damping ring 6 is less than the standard pitch diameter of the gear teeth 5.The outer wall of damping ring 6 exceeds the gear teeth 5 root circle 2mm.Damping ring 6 is connected with crankshaft sprocket 1 interference fit, is coated with the tackiness agent that is useful on bonding damping ring 6 and crankshaft sprocket 1 between damping ring 6 inwalls and crankshaft sprocket 1 outer wall.Two damping rings 6 are fitted in respectively on the bi-side of the gear teeth 5, and damping ring 6 is coated with 5 on the gear teeth and is useful on the tackiness agent that is connected damping ring 6 and the gear teeth 5.
At crankshaft sprocket damping ring is set, the carrier bar of chain is overlapped on the outer wall of damping ring, in the process of chain transmission, and impact shock and noise that damping ring produces in the time of can reducing chain and gear teeth meshing effectively, reduce the wearing and tearing of chain and the gear teeth, prolong their working life.Vibration damping timing chain transmission system in the process of transmission, vibrate and noise all less, improved the NVH performance of motor car engine.
Above-described embodiment is a kind of preferable scheme of the present utility model, is not that the utility model is done any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technological scheme that claim puts down in writing.
Claims (6)
1. vibration damping timing chain transmission system, comprise crankshaft sprocket (1), camshaft sprocket (2), chain guide (3), connect chain (4) between crankshaft sprocket and the camshaft sprocket, chain guide is arranged on the outside of the chain between crankshaft sprocket and the camshaft sprocket, chain is overlapped on the chain guide, it is characterized in that, the outer wall of crankshaft sprocket is provided with circle gear teeth (5), chain and gear teeth meshing transmission, be socketed with two elastic damping rings (6) on the crankshaft sprocket, two damping rings are separately positioned on the both sides of the gear teeth, the carrier bar of chain both sides (7) respectively with the outer wall of two damping rings overlap joint.
2. vibration damping timing chain transmission system according to claim 1 is characterized in that, damping ring adopts rubber material to make.
3. vibration damping timing chain transmission system according to claim 1 is characterized in that, damping ring is connected with the crankshaft sprocket interference fit.
4. according to claim 1 or 2 or 3 described vibration damping timing chain transmission systems, it is characterized in that, be coated with the tackiness agent that is useful on bonding damping ring and crankshaft sprocket between damping ring inwall and the crankshaft sprocket outer wall.
5. according to claim 1 or 2 or 3 described vibration damping timing chain transmission systems, it is characterized in that two damping rings are fitted in respectively on the bi-side of the gear teeth, and be coated with the tackiness agent that is useful on connection damping ring and the gear teeth between damping ring and the gear teeth.
6. according to claim 1 or 2 or 3 described vibration damping timing chain transmission systems, it is characterized in that the external diameter of damping ring is greater than the root diameter of the gear teeth, the external diameter of damping ring is less than the standard pitch diameter of the gear teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220708992 CN203067686U (en) | 2012-12-19 | 2012-12-19 | Vibration-reducing timing chain transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220708992 CN203067686U (en) | 2012-12-19 | 2012-12-19 | Vibration-reducing timing chain transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203067686U true CN203067686U (en) | 2013-07-17 |
Family
ID=48766473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220708992 Expired - Fee Related CN203067686U (en) | 2012-12-19 | 2012-12-19 | Vibration-reducing timing chain transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203067686U (en) |
-
2012
- 2012-12-19 CN CN 201220708992 patent/CN203067686U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20131219 |