CN203035278U - Gas distribution cam of engine of motorcycle - Google Patents
Gas distribution cam of engine of motorcycle Download PDFInfo
- Publication number
- CN203035278U CN203035278U CN 201220721257 CN201220721257U CN203035278U CN 203035278 U CN203035278 U CN 203035278U CN 201220721257 CN201220721257 CN 201220721257 CN 201220721257 U CN201220721257 U CN 201220721257U CN 203035278 U CN203035278 U CN 203035278U
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- CN
- China
- Prior art keywords
- camshaft
- bearing assembly
- assembly department
- center hole
- convex closure
- 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 gas distribution cam of an engine of a motorcycle. The gas distribution cam comprises a camshaft (1); a first bump (5) and a second bump (6) are arranged on the camshaft (1) at intervals; a first bearing mounting portion (1a) and a second bearing mounting portion (1b) are respectively arranged at the left end and the right end of the camshaft (1); the camshaft (1) is axially provided with a center hole (2); the center hole (2) is a blind hole and extends to the first bearing mounting portion (1a); first oil passages (3) are uniformly distributed between the surface of the first bearing mounting portion (1a) and the center hole (2); and a spiral oil groove (3) is arranged on the surface of the second bearing mounting portion (1b). The gas distribution cam has the advantages of good cooling and lubricating effects, long service life and high reliability.
Description
Technical field
The utility model relates to a kind of cam structure, particularly relates to a kind of cam for the motorcycle engine distribution device.
Background technique
In the prior art, the valve cam of motorcycle engine is arranged in the engine cylinder head by bearing, and cam is by rotating so that convex closure regularly backs down the air inlet push rod of intake valve and the push rod of giving vent to anger of exhaust valve, to open intake valve and exhaust valve.Therefore, in the process of cam high speed rotating, cam and bearing must be cooled off and be lubricated preferably, otherwise will cause cam or bearing premature failure.
Therefore those skilled in the art are devoted to develop the effective motorcycle engine valve cam of a kind of cooling and lubricating.
The model utility content
Because the above-mentioned defective of prior art, technical problem to be solved in the utility model provides the effective motorcycle engine valve cam of a kind of cooling and lubricating.
For achieving the above object, the utility model provides a kind of motorcycle engine valve cam, comprises camshaft; Be arranged at intervals with first convex closure and second convex closure on the described camshaft; The two ends, the left and right sides of described camshaft are respectively arranged with clutch shaft bearing assembly department and the second bearing assembly department; Described camshaft is provided with center hole vertically; Described center hole is blind hole, extends to described clutch shaft bearing assembly department; Be evenly equipped with first oil duct between the surface of described clutch shaft bearing assembly department and the described center hole; The surface of the described second bearing assembly department is provided with spiral helicine oil groove.
Preferable, described camshaft has been disposed radially second oil duct at the minimum diameter place of described first convex closure, has been disposed radially the 3rd oil duct at the minimum diameter place of described second convex closure.
Preferable, the length of described first convex closure and second convex closure is 14mm, at interval 3mm.
Preferable, described center hole is shoulder hole; Described center hole is 6mm near the diameter of described clutch shaft bearing assembly department one end, and the diameter of the close described second bearing assembly department, one end is 12mm, and length is 56mm.
Preferable, the bottom of described oil groove is semicircle, the radius of this semicircle is 1mm.
The beneficial effects of the utility model are: the utility model is by to oil duct and oil groove unique design, and the camshaft critical size is carried out brand-new design, therefore cooling, high lubricating effect, long service life, reliability height.
Description of drawings
Fig. 1 is the structural representation of the utility model one embodiment.
Fig. 2 is that the A of Fig. 1 is to view.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
As depicted in figs. 1 and 2, a kind of motorcycle engine valve cam comprises camshaft 1; Be arranged at intervals with first convex closure 5 and second convex closure 6 on the camshaft 1; The two ends, the left and right sides of camshaft 1 are respectively arranged with clutch shaft bearing assembly department 1a and the second bearing assembly department 1b; Camshaft 1 is provided with center hole 2 vertically; Center hole 2 is blind hole, extends to clutch shaft bearing assembly department 1a; Be evenly equipped with first oil duct 3 between the surface of clutch shaft bearing assembly department 1a and the center hole 2; The surface of the second bearing assembly department 1b is provided with spiral helicine oil groove 4.
Camshaft 1 has been disposed radially second oil duct 7 at the minimum diameter place of first convex closure 5, has been disposed radially the 3rd oil duct 8 at the minimum diameter place of second convex closure 6.
The bottom of oil groove 4 is semicircle, and the radius R of this semicircle is 1mm.
In camshaft when work,, lubricant oil can enter the camshaft 1 in center hole 2, and is lubricated cooling by first oil duct 3 pairs of clutch shaft bearing assembly departments 1a and the clutch shaft bearing that is installed on it; Lubricant oil cools off by 7 pairs of first convex closures 5 of second oil duct, cools off by 8 pairs of second convex closures 6 of the 3rd oil duct; Simultaneously, lubricant oil is lubricated cooling by 4 couples of second bearing assembly department 1b of oil groove and second bearing that is installed on it.
More than describe preferred embodiment of the present utility model in detail.Should be appreciated that those of ordinary skill in the art need not creative work and just can make many modifications and variations according to design of the present utility model.Therefore, all technician in the art comply with design of the present utility model on the basis of existing technology by the available technological scheme of logical analysis, reasoning, or a limited experiment, all should be in the determined protection domain by claims.
Claims (5)
1. a motorcycle engine valve cam comprises camshaft (1); Be arranged at intervals with first convex closure (5) and second convex closure (6) on the described camshaft (1); The two ends, the left and right sides of described camshaft (1) are respectively arranged with clutch shaft bearing assembly department (1a) and the second bearing assembly department (1b); It is characterized in that: described camshaft (1) is provided with center hole (2) vertically; Described center hole (2) is blind hole, extends to described clutch shaft bearing assembly department (1a); Be evenly equipped with first oil duct (3) between the surface of described clutch shaft bearing assembly department (1a) and the described center hole (2); The surface of the described second bearing assembly department (1b) is provided with spiral helicine oil groove (4).
2. motorcycle engine valve cam as claimed in claim 1, it is characterized in that: described camshaft (1) has been disposed radially second oil duct (7) at the minimum diameter place of described first convex closure (5), has been disposed radially the 3rd oil duct (8) at the minimum diameter place of described second convex closure (6).
3. motorcycle engine valve cam as claimed in claim 1 or 2, it is characterized in that: the length of described first convex closure (5) and second convex closure (6) is 14mm, at interval 3mm.
4. motorcycle engine valve cam as claimed in claim 1 or 2, it is characterized in that: described center hole (2) is shoulder hole; Described center hole (2) is 6mm near the diameter of described clutch shaft bearing assembly department (1a) end, and the diameter of the close described second bearing assembly department (1b) end is 12mm.
5. motorcycle engine valve cam as claimed in claim 4 is characterized in that: the bottom of described oil groove (4) is for semicircle, and the radius of this semicircle is 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220721257 CN203035278U (en) | 2012-12-25 | 2012-12-25 | Gas distribution cam of engine of motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220721257 CN203035278U (en) | 2012-12-25 | 2012-12-25 | Gas distribution cam of engine of motorcycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203035278U true CN203035278U (en) | 2013-07-03 |
Family
ID=48687411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220721257 Expired - Fee Related CN203035278U (en) | 2012-12-25 | 2012-12-25 | Gas distribution cam of engine of motorcycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203035278U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107484450A (en) * | 2017-07-03 | 2017-12-19 | 昆明理工大学 | A kind of bionical multiple dimensioned convex closure structure based on fractal theory |
-
2012
- 2012-12-25 CN CN 201220721257 patent/CN203035278U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107484450A (en) * | 2017-07-03 | 2017-12-19 | 昆明理工大学 | A kind of bionical multiple dimensioned convex closure structure based on fractal theory |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20151225 |
|
| EXPY | Termination of patent right or utility model |