CN205745185U - A kind of crankshaft chain wheel of automobile engine structure - Google Patents
A kind of crankshaft chain wheel of automobile engine structure Download PDFInfo
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- CN205745185U CN205745185U CN201620502759.4U CN201620502759U CN205745185U CN 205745185 U CN205745185 U CN 205745185U CN 201620502759 U CN201620502759 U CN 201620502759U CN 205745185 U CN205745185 U CN 205745185U
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- sprocket wheel
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- scabbled
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Abstract
nullThis utility model provides a kind of crankshaft chain wheel of automobile engine structure being prevented effectively from interference，Including the axle journal (5) on crankshaft front end and sprocket wheel (3)，Axle journal (5) on crankshaft front end is provided with the flat structure (52) of keyway (50) and radial protrusion，Two flat faces (520) scabbled it are arranged with on the periphery of flat structure (52)，The pilot hole of sprocket wheel (3) is provided with the sprocket wheel keyway (30) corresponding with the keyway (50) on axle journal (5)、Periphery is provided with sprocket (4)，Its one end corresponding with flat structure (52) is flange face (2)，Flange face (2) is dish tooth flange face: the periphery of flange face (2) is provided with that two corresponding with the flat face (520) that two be arranged with on the periphery of flat structure (52) are scabbled and diameter is less than dish tooth flange toothless portion) (20) of the spacing between two flat faces (520) scabbled.
Description
Technical field
This utility model relates to automobile engine, is specifically related to a kind of crankshaft chain wheel of automobile engine structure.
Background technology
The general trend of Automobile Motor Design at present is compact conformation, lightweight etc..Then, integral type engine oil pump assembly
Widely applied.For this reason, it may be necessary to set up the flat structure of radial protrusion on axle journal on traditional crankshaft front end, and at this
Being arranged with two flat faces scabbled on the periphery of flat structure, integral type engine oil pump assembly is nested in song by installing hole
In axle flat structure, and connect driving rotor of engine oil pump work by crank rotation.This end face making flat structure and sprocket wheel
Effective contact area of flange face reduces, and the moment of torsion that bent axle passes to sprocket wheel is less.Meanwhile, integral type engine oil pump assembly compares split
Formula engine oil pump assembly is taken up space relatively big, and in work process, its rotor may interfere with traditional sprocket wheel, causes damage
Evil, causes engine oil pump assembly cisco unity malfunction, and makes electromotor cisco unity malfunction.To this end, occur in that following several on market
Plant the chain sprocket structure that tradition sprocket wheel is improved；
A kind of crankshaft chain wheel of automobile engine structure shown in Figure 1, the flange face 2 of its sprocket wheel 3 is disc-shaped structure,
The periphery of flange face 2 is provided with two symmetrical flat faces 8 scabbled.This flat face 8 and flat square of engine crankshaft boss
The flat face that two be arranged with on the periphery in portion are scabbled is corresponding, keeps away to meet when sprocket wheel 3 assembles with engine crankshaft
Exempting from the integral type rotor of engine oil pump with periphery to interfere, its defect existed is, two symmetrical flat faces 8 scabbled need
Turning operation to be increased, processing cost is high.
Another crankshaft chain wheel of automobile engine structure shown in Figure 2, the flange face 2 of its sprocket wheel 3 is dish tooth flange
Face, its needs that disclosure satisfy that transmission torsion and employing gear hobbing process molding, processing cost is relatively low；But the maximum of its flange face 2
Distance between two flat faces scabbled that external diameter is arranged with on the periphery beyond flat square of engine crankshaft boss portion,
There is the risk interfered with integral type rotor of engine oil pump.
Another crankshaft chain wheel of automobile engine structure shown in Figure 3, this sprocket wheel 3 without flange face, its sprocket wheel 3 with start
The external diameter of one end that flat structure on the axle journal on machine crankshaft front end is corresponding is less than outside flat square of engine crankshaft boss portion
Distance between the flat face that two be arranged with on week are scabbled, can use gear hobbing process, and processing cost is relatively low；And can
Avoiding interfering with integral type rotor of engine oil pump in installation process, the deficiency existed is, sprocket wheel 3 and the effective contact diameter of bent axle
Too small, the moment of friction between sprocket wheel 3 and bent axle boss portion is not enough, and the moment of torsion that motivation bent axle passes to sprocket wheel 3 is less.
Utility model content
The technical problems to be solved in the utility model provides one to be prevented effectively from interference, transmission moment of torsion, and relatively greatly and processing is compared
Readily crankshaft chain wheel of automobile engine structure.
For solving above-mentioned technical problem, crankshaft chain wheel of automobile engine structure of the present utility model, including on crankshaft front end
Axle journal and sprocket wheel, the axle journal on described crankshaft front end is provided with the flat structure of keyway and radial protrusion, described flat structure
Periphery on be arranged with two flat faces scabbled, the pilot hole of described sprocket wheel is provided with corresponding with the keyway on axle journal
Sprocket wheel keyway, periphery be provided with sprocket, its one end corresponding with flat structure is flange face, and described flange face is dish tooth
Flange face: the periphery of described flange face be provided with two with two flat scabbled being arranged with on the periphery of flat structure
Face is corresponding and diameter is less than the dish tooth flange toothless portion) of the spacing between two flat faces scabbled.
Preferably, described sprocket wheel uses powder metallurgy straight forming.
Preferably, described sprocket wheel uses steel rough forging, teeth portion gear hobbing process molding.
This utility model comprises advantages below；
Due to this utility model be provided with on the periphery of flange face two with the periphery of flat structure on be arranged with two
The individual flat face scabbled is corresponding and diameter is less than the dish tooth flange toothless portion) of the spacing between two flat faces scabbled.
Thus, the rotor that can be prevented effectively from integral type engine oil pump assembly interferes with sprocket wheel, causes damage, it is ensured that engine oil pump assembly is just
Often work, and make engine work.Simultaneously, it is ensured that the end face of flat structure and effective contact area of the flange face of sprocket wheel
Relatively big, the moment of torsion that flat structure passes to sprocket wheel is bigger.Additionally, due to the flange face of sprocket wheel is dish tooth flange face, outside sprocket wheel
Be provided with sprocket week, thus flange face and sprocket can together with process so that processing is easier, processing cost is relatively low.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of crankshaft chain wheel of automobile engine structure of prior art；
Fig. 2 is the schematic diagram of the another kind of crankshaft chain wheel of automobile engine structure of prior art；
Fig. 3 is the schematic diagram of another crankshaft chain wheel of automobile engine structure of prior art；
Fig. 4 is structural representation of the present utility model;
Fig. 5 is assembling schematic diagram of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawings preferred implementation of the present utility model is elaborated.
Seeing Fig. 4 and Fig. 5, crankshaft chain wheel of automobile engine structure of the present utility model, including the axle journal 5 on crankshaft front end
With sprocket wheel 3, the axle journal 5 on described crankshaft front end is provided with the flat structure 52 of keyway 50 and radial protrusion, described flat structure
It is arranged with two flat faces 520 scabbled on the periphery of 52, the pilot hole of described sprocket wheel 3 is provided with and the key on axle journal 5
The corresponding sprocket wheel keyway 30 of groove 50, periphery are provided with sprocket 4, and its one end corresponding with flat structure 52 is flange face 2,
Described flange face 2 is dish tooth flange face.From Fig. 4 and Fig. 5, the periphery of described flange face 2 is provided with two and flat structure
The flat face 520 that two be arranged with on the periphery of 52 are scabbled is corresponding and diameter is less than two flat faces scabbled
The dish tooth flange toothless portion) 20 of the spacing between 520.So, rotor and the chain of integral type engine oil pump assembly can be prevented effectively from
Wheel 3 interferes, causes damage, it is ensured that engine oil pump assembly normally works, and makes engine work.Simultaneously, it is ensured that flat
The end face of square structure 52 is relatively big with effective contact area of the flange face 2 of sprocket wheel 3, and flat structure 52 passes to the moment of torsion of sprocket wheel 3
Bigger.Additionally, flange face 2 and sprocket 4 can together with process so that processing is easier, processing cost is relatively low.
The entirety of described sprocket wheel 3 can use powder metallurgy straight forming.Thus, process fairly simple and processing cost relatively
Low.
The entirety of described sprocket wheel 3 can also use steel rough forging, teeth portion gear hobbing process molding.Thus, process equally
Fairly simple and processing cost is relatively low.
This utility model assembling process is as follows；
See Fig. 5, the installing hole (not shown) of integral-type oil pump assembly is nested in flat structure 52, then will
Woodruff key 51 on axle journal 5 utilizes rubber hammer to rap in the keyway 50 being placed on axle journal 5, subsequently by the flange face 2 of sprocket wheel 3 towards
Flat structure 52 ground is inserted on axle journal 5, is alignd with woodruff key 51 by the sprocket wheel keyway 30 on sprocket wheel 3 simultaneously, and touches sprocket wheel 3,
Until the end face laminating of its flange face 2 and flat structure 52, and make two dish tooth flange toothless portion)s 20 respectively with flat structure 52
Periphery on two flat faces 520 scabbled align, i.e. complete assembling.
Claims (3)
1. a crankshaft chain wheel of automobile engine structure, including the axle journal (5) on crankshaft front end and sprocket wheel (3), before described bent axle
Axle journal (5) on end is provided with the flat structure (52) of keyway (50) and radial protrusion, on the periphery of described flat structure (52)
It is arranged with two flat faces (520) scabbled, the pilot hole of described sprocket wheel (3) is provided with and the keyway on axle journal (5)
(50) corresponding sprocket wheel keyway (30), periphery are provided with sprocket (4), and its one end corresponding with flat structure (52) is method
Blue face (2), described flange face (2) is dish tooth flange face, it is characterized in that: the periphery of described flange face (2) is provided with two with flat
The flat face (520) that two be arranged with on the periphery of square structure (52) are scabbled is corresponding and diameter is scabbled less than two
Flat face (520) between dish tooth flange toothless portion) (20) of spacing.
Crankshaft chain wheel of automobile engine structure the most according to claim 1, it is characterised in that: described sprocket wheel (3) entirety is adopted
Use powder metallurgy straight forming.
Crankshaft chain wheel of automobile engine structure the most according to claim 1, it is characterised in that: described sprocket wheel (3) uses steel
Rough forging processed, teeth portion gear hobbing process molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620502759.4U CN205745185U (en) | 2016-05-30 | 2016-05-30 | A kind of crankshaft chain wheel of automobile engine structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620502759.4U CN205745185U (en) | 2016-05-30 | 2016-05-30 | A kind of crankshaft chain wheel of automobile engine structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205745185U true CN205745185U (en) | 2016-11-30 |
Family
ID=57362107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620502759.4U Active CN205745185U (en) | 2016-05-30 | 2016-05-30 | A kind of crankshaft chain wheel of automobile engine structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205745185U (en) |
-
2016
- 2016-05-30 CN CN201620502759.4U patent/CN205745185U/en active Active
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |