CN202023649U - Oil leakage preventing structure of automobile engine crankshaft oil seal - Google Patents
Oil leakage preventing structure of automobile engine crankshaft oil seal Download PDFInfo
- Publication number
- CN202023649U CN202023649U CN2011200906997U CN201120090699U CN202023649U CN 202023649 U CN202023649 U CN 202023649U CN 2011200906997 U CN2011200906997 U CN 2011200906997U CN 201120090699 U CN201120090699 U CN 201120090699U CN 202023649 U CN202023649 U CN 202023649U
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- oil
- oil return
- hole
- automobile engine
- engine crankshaft
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The utility model provides an oil leakage preventing structure of an automobile engine crankshaft oil seal, belongs to the technical field of automobiles, and solves the problems that the conventional oil leakage preventing structure of the automobile engine crankshaft oil seal has poor oil drain effect and is easy to leak oil. The oil leakage preventing structure of the automobile engine crankshaft oil seal is arranged on a cylinder block of the engine; a plurality of oil return through holes are formed at a main journal seat of the cylinder block; each oil return through hole is provided with a front orifice and a rear orifice, each front orifice is communicated with an oil seal mounting hole of a crankshaft, and each rear orifice is communicated with an air cylinder inner cavity; and when the cylinder block is arranged in the mounting position, the oil return through holes are downwardly inclined from the front orifices to the rear orifices. The oil leakage preventing structure of the automobile engine crankshaft oil seal adopts the plurality of oil return through holes to achieve the oil return function, has simple structure and excellent oil return effect, and does not influence the strength of the main journal seat.
Description
Technical field
The utility model belongs to automobile technical field, relates to a kind of leak-proof arrangement, particularly a kind of leak-proof arrangement of automobile engine crankshaft oil sealing.
Background technique
Bent axle is the main rotary component of motor, load onto connecting rod after, can accept moving up and down of connecting rod, and be converted into and rotatablely move.Bent axle is made by structural carbon steel or spheroidal graphite cast iron, and bent axle has main journal and connecting rod neck.Main journal is installed on the cylinder body, and the connecting rod neck is connected with crank pin end pore, and the connecting rod small end hole is connected with steam-cylinder piston, is a typical slidercrank mechanism.Bent axle lubricated mainly be meant and rocking arm between lubricated and place, fixed position, two ends lubricated of bearing shell.
The lubricated main of bent axle adopts the in-engine circulatory system to finish, and selects for use machine oil and lubricating grease as oiling agent usually.Machine oil can effectively reduce the friction of parts under high-speed motion of engine crankshaft in the engine cylinder body-internal-circulation, reduces the wearing and tearing of parts.Motor is in the work of reality, because matching gap increase, coaxiality deviation become big behind crankshaft main journal and the bearing bush abrasion; Bent axle axial clearance is big, the bent axle axial float, makes the machine oil of storing between main journal seat and the Rear oil seal mounting hole too much.Machine oil constantly accumulates and will cause the oil leakage phenomenon of motor.
Usually those skilled in the art can be provided with spill port at the installed position of oil sealing, discharge in order to the machine oil that will accumulate between main journal seat and the oil sealing, and for example, [patent No. ZL 96217546.3 for Chinese patent; Notice of authorization CN 2258936Y] a kind of bent axle Rear oil seal seat is disclosed, it comprises oil-sealing sleeve, oil-sealing sleeve end face, spill port etc., main feature is to be provided with the oil sealing limit dais at oil-sealing sleeve and oil-sealing sleeve end face jointing place.It has the effective advantage of oil sealing.
Above-mentioned structure can improve motor the oil sealing effect, reduce leakage of oil, but the problem that exists is: 1, bent axle Rear oil seal seat has just strengthened the size of spill port, the raising of oil return effect is also not obvious; 2, on bent axle Rear oil seal seat, the oil sealing limit dais is set, oil sealing and limit dais end face is maintained a certain distance, the installation defective tightness of oil sealing; 3, the oil extraction effect that plays more for a long time at the machine oil that accumulates is limited.
Summary of the invention
The purpose of this utility model is to have the problems referred to above at existing technology, has proposed a kind of simple in structurely, can lead the leak-proof arrangement of the automobile engine crankshaft oil sealing of oil return drain pan with accumulating in machine oil in the seal mounting hole.
The purpose of this utility model can realize by following technical proposal: a kind of leak-proof arrangement of automobile engine crankshaft oil sealing, be located on the cylinder block of motor, it is characterized in that, the main journal seat place of described cylinder block is provided with several oil return through-holes, each oil return through-hole all has a preceding aperture and aperture, a back, described preceding aperture communicates with the seal mounting hole of bent axle, aperture, described back communicates with cylinder inner cavity, and described oil return through-hole is directed downwards inclination in the aperture backward from above-mentioned preceding aperture when cylinder block is in the mounting point.
The leak-proof arrangement of this automobile engine crankshaft oil sealing is used for the machine oil that accumulates between axle journal seat and the oil sealing fitting seat is led the oil return drain pan.In the working procedure of motor, machine oil enters and accumulates between axle journal seat and the oil sealing fitting seat, and the preceding aperture of oil return through-hole is positioned at below the liquid level of machine oil, and machine oil flows to the aperture, back along the oil return through-hole that tilts under action of gravity, and finally flows back to oil sump.
In the leak-proof arrangement of above-mentioned automobile engine crankshaft oil sealing, when cylinder block was in the mounting point, the preceding aperture of described oil return through-hole was in the position near the bottom of seal mounting hole.Can make the oil pressure in the preceding aperture of oil return through-hole higher, oil extraction is more thorough.
In the leak-proof arrangement of above-mentioned automobile engine crankshaft oil sealing, the quantity of described oil return through-hole is three.Adopt the design of a plurality of oil return through-holes that the oil return effect is significantly improved, little to the intensity effect of main journal seat simultaneously.
In the leak-proof arrangement of above-mentioned automobile engine crankshaft oil sealing, the preceding aperture of the oil return through-hole of described centre is in the minimum point of described seal mounting hole bottom.Middle oil return through-hole can be led the oil return drain pan with the machine oil that enters in the seal mounting hole.
In the leak-proof arrangement of above-mentioned automobile engine crankshaft oil sealing, the oil return through-hole of described centre and two other oil return through-hole angulation are 25 degree～35 degree.
The purpose of She Zhiing is like this: when the burden of machine oil hour, the oil return through-hole in the middle of having only is positioned at below the machine oil liquid level, machine oil is merely able to flow back to oil sump from the oil return through-hole of centre; When the burden of machine oil more for a long time, all oil return through-holes all are positioned at below the machine oil liquid level, three oil return through-holes are worked simultaneously and are made machine oil flow back to oil sump rapidly, have improved the oil return ability.
Compared with prior art, the advantage of the leak-proof arrangement of this automobile engine crankshaft oil sealing is:
1, the leak-proof arrangement of this automobile engine crankshaft oil sealing adopts a plurality of oil return through-holes to realize the oil return function, and is simple in structure, can the intensity of main journal seat do not impacted.
2. the oil return through-hole of the leak-proof arrangement of this automobile engine crankshaft oil sealing does not have only an oil return through-hole to work at the machine oil that accumulates not in same plane for a long time, when the machine oil that accumulates more for a long time, all oil return through-holes are all worked, and make the oil return better effects if.
3, the oil return through-hole of the leak-proof arrangement of this automobile engine crankshaft oil sealing certain angle that all tilts guaranteed the smooth and easy of oil.
Description of drawings
Fig. 1 is the main TV structure schematic representation of the leak-proof arrangement of this automobile engine crankshaft oil sealing.
Fig. 2 is the left TV structure schematic representation of the leak-proof arrangement of this automobile engine crankshaft oil sealing.
Among the figure, 1, the main journal seat; 2, seal mounting hole; 3, oil return through-hole; 31, preceding aperture; 32, aperture, back.
Embodiment
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
The leak-proof arrangement of this automobile engine crankshaft oil sealing is arranged on the cylinder block of motor, cylinder block comprises main journal seat 1 and seal mounting hole 2, main journal seat 1 is used for the main journal of supporting crankshaft, and seal mounting hole 2 is provided with and can prevents machine oil oil spill envelope from cylinder block.As depicted in figs. 1 and 2, the lower end of main journal seat 1 is provided with the oil return through-hole 3 of inclination, the preceding aperture 31 of oil return through-hole 3 communicates with the seal mounting hole 2 of bent axle, and back aperture 32 communicates with the inner chamber of cylinder, and the machine oil that refluxes from oil return through-hole 3 can flow to oil sump by aperture 32, back.
As shown in Figure 1, the quantity of oil return through-hole 3 is three, and the oil return through-hole 3 in the middle of being positioned at is in main journal seat 1 bottom, and two other oil return through-hole 3 lays respectively at middle oil return through-hole 3 both sides, and becomes 25 to spend to 30 degree angles with it.When the burden of machine oil hour, the oil return through-hole 3 in the middle of having only is positioned at below the machine oil liquid level, machine oil is merely able to flow back to oil sump from the oil return through-hole 3 of centre; When the burden of machine oil more for a long time, all oil return through-holes 3 all are positioned at below the machine oil liquid level, three oil return through-holes 3 are worked simultaneously and are made machine oil flow back to oil sump rapidly, have improved the oil return ability.As preferably, the oil return through-hole 3 that is positioned at both sides is 30 degree with oil return through-hole 3 angulations that are positioned at the neutral position.
The quantity of oil return through-hole 3 has more than and is limited to three, adopts not two oil return through-holes 3 or a plurality of oil return through-hole 3 on same horizontal plane that the oil return effect is improved.
The leak-proof arrangement of this automobile engine crankshaft oil sealing is used for the machine oil that accumulates between axle journal seat and the oil sealing fitting seat is led the oil return drain pan.In the working procedure of motor, machine oil enters and accumulates between axle journal seat and the oil sealing fitting seat, and the preceding aperture 31 of oil return through-hole 3 is positioned at below the liquid level of machine oil, and machine oil flows to aperture 32, back along the oil return through-hole 3 that tilts under action of gravity, and finally flow back to oily base, prevent engine oil leakage.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used terms such as main journal seat 1, seal mounting hole 2, oil return through-hole 3, preceding aperture 31, aperture 32, back morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (5)
1. the leak-proof arrangement of an automobile engine crankshaft oil sealing, be located on the cylinder block of motor, it is characterized in that, the main journal seat (1) of described cylinder block locates to be provided with several oil return through-holes (3), each oil return through-hole (3) all has a preceding aperture (31) and aperture (32), a back, described preceding aperture (31) communicates with the seal mounting hole (2) of bent axle, aperture, described back (32) communicates with cylinder inner cavity, and when cylinder block is in the mounting point described oil return through-hole (3) from above-mentioned preceding aperture (31) backward aperture (32) be directed downwards inclination.
2. the leak-proof arrangement of automobile engine crankshaft oil sealing according to claim 1 is characterized in that, when cylinder block was in the mounting point, the preceding aperture (31) of described oil return through-hole (3) was in the position near the bottom of seal mounting hole (2).
3. the leak-proof arrangement of automobile engine crankshaft oil sealing according to claim 1 and 2 is characterized in that, the quantity of described oil return through-hole (3) is three.
4. the leak-proof arrangement of automobile engine crankshaft oil sealing according to claim 3 is characterized in that, the preceding aperture (31) of the oil return through-hole of described centre (3) is in the minimum point of described seal mounting hole (2) bottom.
5. the leak-proof arrangement of automobile engine crankshaft oil sealing according to claim 4 is characterized in that, the oil return through-hole of described centre (3) is 25 degree～35 degree with two other oil return through-hole (3) angulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200906997U CN202023649U (en) | 2011-03-31 | 2011-03-31 | Oil leakage preventing structure of automobile engine crankshaft oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200906997U CN202023649U (en) | 2011-03-31 | 2011-03-31 | Oil leakage preventing structure of automobile engine crankshaft oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202023649U true CN202023649U (en) | 2011-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200906997U Expired - Fee Related CN202023649U (en) | 2011-03-31 | 2011-03-31 | Oil leakage preventing structure of automobile engine crankshaft oil seal |
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| Country | Link |
|---|---|
| CN (1) | CN202023649U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295402A (en) * | 2014-07-20 | 2015-01-21 | 中国北方发动机研究所(天津) | Crankshaft oil seal oil return structure suitable for internal combustion engine |
| CN109826720A (en) * | 2018-04-19 | 2019-05-31 | 浙江吉利控股集团有限公司 | Crankshaft oil seal device and automobile engine |
-
2011
- 2011-03-31 CN CN2011200906997U patent/CN202023649U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295402A (en) * | 2014-07-20 | 2015-01-21 | 中国北方发动机研究所(天津) | Crankshaft oil seal oil return structure suitable for internal combustion engine |
| CN109826720A (en) * | 2018-04-19 | 2019-05-31 | 浙江吉利控股集团有限公司 | Crankshaft oil seal device and automobile engine |
| CN109826720B (en) * | 2018-04-19 | 2020-07-21 | 浙江吉利控股集团有限公司 | Crankshaft oil seal device and automobile engine |
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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: 20111102 Termination date: 20140331 |