CN203926787U - A kind of oil sealing - Google Patents
A kind of oil sealing Download PDFInfo
- Publication number
- CN203926787U CN203926787U CN201420303123.8U CN201420303123U CN203926787U CN 203926787 U CN203926787 U CN 203926787U CN 201420303123 U CN201420303123 U CN 201420303123U CN 203926787 U CN203926787 U CN 203926787U
- Authority
- CN
- China
- Prior art keywords
- oil
- storage tank
- sealing
- pump
- oil storage
- 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
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 65
- 210000002421 cell wall Anatomy 0.000 claims abstract description 11
- 239000012530 fluid Substances 0.000 claims abstract description 10
- 210000003205 muscle Anatomy 0.000 claims description 6
- 239000003921 oil Substances 0.000 abstract description 117
- 239000000314 lubricant Substances 0.000 abstract description 11
- 239000010721 machine oil Substances 0.000 abstract description 11
- 230000009471 action Effects 0.000 abstract description 3
- 239000010705 motor oil Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model discloses a kind of oil sealing, sealing lip is being provided with oil storage tank near cavity end, oil storage tank extends upwardly to seal lip away from the cell wall of cavity end, oil storage tank was provided with hydraulic fluid port near the cell wall of cavity end, the internal surface of oil storage tank is provided with a plurality of oil of the pump to seal lip pump oil passages, and pump oil passage is extended to seal lip by the bottom land of oil storage tank.The machine oil that the utility model splashes while utilizing motor operation lubricates, during engine start operation, pump-absorb action due to pump oil passage, even if only have micro-machine oil in oil storage tank, pump oil passage also can be drawn onto oil pump seal lip place, between seal lip and bent axle, form lubricant film, eliminate dry friction.The utility model has solved the Properties of Dry Friction Problems of engine start initial operating stage oil sealing sealing lip and bent axle, fundamentally solves the engine oil seal Leakage that the seal lip scaling loss that causes due to dry friction causes, improves the reliability of oil sealing.
Description
Technical field
The utility model relates to a kind of oil sealing.
Background technique
Oil sealing, claims again rotary shaft lip seal, and it has flexible lip, flexible lip is generally rubber or plastic materials, conventionally has a metal frame to support, and by seal lip, imposes on axle with radial force, prevent the leakage of lubricant oil, also can prevent outside dust and drowned intrusion by it.Mainly splash and be lubricated by machine oil in oil seal for crankshaft of engine place.As shown in fig. 1, oil sealing has two seal lips 3, between two seal lips 3, be provided with oil storage tank 4, the oil storage tank 4 of this kind of oil sealing is enclosed slot, because the gap between double sealing lip 3 and bent axle 6 is very little, the machine oil that motor splashes cannot enter into oil storage tank 4, therefore needs outer lubricating oil filling or lubricant grease to be lubricated.Engine crankshaft bent axle in rotation process can be beated, cause the gap between seal lip and bent axle to become large, additional lubricant medium can run off, when motor is driven again, in oil storage tank, do not have lubricant medium to form lubricant film between sealing lip and bent axle, cause oil seal lip and bent axle to produce dry friction, the High Rotation Speed of bent axle, between sealing lip and bent axle surface, just can produce rapidly high temperature, because sealing lip is generally rubber material, material heat-resisting quantity is lower, the high temperature that rotation produces surpasses the highest threshold temperature of rubber, so that scaling loss sealing lip, make seal failure.The oil seal lip that current oil sealing exists in the time of cannot fundamentally solving engine start and the Properties of Dry Friction Problems of bent axle.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of oil sealing, at engine start initial operating stage, can form lubricant film, avoids because dry friction causes oil sealing sealing lip scaling loss impact sealing.
For solving the problems of the technologies described above, the utility model comprises oil sealing body, oil sealing body is provided with sealing lip, sealing lip is provided with for by the seal lip of shaft sealing, it is characterized in that described sealing lip is being provided with oil storage tank near cavity end, described oil storage tank extends upwardly to seal lip away from the cell wall of cavity end, described oil storage tank was provided with hydraulic fluid port near the cell wall of cavity end, the internal surface of described oil storage tank is provided with a plurality of oil of the pump to seal lip pump oil passages, and described pump oil passage is extended to seal lip by the bottom land of oil storage tank.
Described oil storage tank is curve bath.
Described store oil grooved ring is located at the surface of sealing lip.
Described hydraulic fluid port ring is excessively located at the end of oil storage tank.
Described pump oil passage is a plurality of, and it is evenly periphery in oil storage tank.
The edge of described pump oil passage is at the camber line that is projected as of axle cross section, and a plurality of pump oil rotation directions of passage are identical with the rotation direction of axle.
The edge of described pump oil passage is projected as oblique line on bent axle cross section, and a plurality of pumps oil rotation directions of passage are identical with the rotation direction of axle.
Described pump oil passage formed by offering oil groove at the internal surface of oil storage tank.
The internal surface of described oil storage tank is provided with protruding pump oil muscle, between described adjacent two pumps oil muscle, forms pump oil passage.
Adopt after said structure, by increasing by one at oil sealing sealing lip position with the oil storage tank of pump oil passage and opening, a small amount of machine oil can remain in oil storage tank, the machine oil that the utility model splashes while utilizing motor operation lubricates, no longer need to add lubricant medium in oil storage tank, during engine start operation, pump-absorb action due to pump oil passage, even if only have micro-machine oil in oil storage tank, pump oil passage also can be drawn onto oil pump seal lip place, between seal lip and bent axle, form lubricant film, eliminate dry friction.The engine oil seal Leakage that the utility model causes from designing the Properties of Dry Friction Problems that has solved engine start initial operating stage oil sealing sealing lip and bent axle, fundamentally solve the seal lip scaling loss that causes due to dry friction, improves the reliability of oil sealing.
Accompanying drawing explanation
Below in conjunction with the drawings and the specific embodiments, the utility model is described in further detail:
Fig. 1 is the structural representation of prior art;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is the right elevation of Fig. 2 sealing lip and bent axle;
Fig. 4 is the another kind of embodiment of pump oil passage.
Embodiment
As shown in Figure 2, for most preferred embodiment of the present utility model, oil sealing comprises oil sealing body 1, oil sealing body 1 is provided with sealing lip 2, sealing lip 2 is provided with for by the seal lip of shaft sealing 3, thereby seal lip 3 contacts with bent axle bent axle 6 sealings, and sealing lip 2 opposite sides are provided with the spring 8 that seal lip 3 is pressed on to bent axle 6 surfaces, and sealing lip 2 is provided with annular oil storage tank 4 close motor cavity end with bent axle 6 contacting sides.Oil storage tank 4 is the smooth curve bath of internal surface transition, oil storage tank 4 extends upwardly to seal lip 3 away from the cell wall (being the cell wall in left side in Fig. 2) of motor cavity end, oil storage tank 4 was provided with hydraulic fluid port 5 near the cell wall (being the cell wall on right side in Fig. 2) of motor cavity end, cross the end that hydraulic fluid port 5 rings are located at oil storage tank 4, by being set, hydraulic fluid port 5 makes along the surface with bent axle 6, to form certain interval on the cell wall on oil storage tank 4 right sides, thereby make oil storage tank 4 become open type oil storage tank 4, the machine oil splashing during motor operation can be smoothly through hydraulic fluid port 5 and enter oil storage tank 4.The internal surface of oil storage tank 4 is evenly equipped with a plurality of oil of the pump to seal lip 3 pump oil passages 7, and pump oil passage 7 is extended to seal lip 3 by the bottom land of oil storage tank 4.As shown in Figure 3, the edge of pump oil passage 7 is at the camber line that is projected as of bent axle 6 cross sections, be that pump oil passage 7 is projected as arc oil duct on bent axle cross section, the rotation direction of a plurality of pump oil passages 7 is identical with the rotation direction of bent axle 6, during bent axle 6 High Rotation Speed, pump oil passage 7 can have enough power by oil pump to seal lip 3 places.The internal surface of oil storage tank 4 is provided with protruding pump oil muscle, between described adjacent two pumps oil muscle, forms pump oil passage 7.Pump oil passage 7 also can form by offering oil groove at the internal surface of oil storage tank 4.
The utility model is by increasing by one with the oil storage tank 4 of pump oil passage 7 and opening at oil sealing sealing lip 3 positions, a small amount of machine oil can remain in oil storage tank 4, the machine oil that the utility model splashes while utilizing motor operation lubricates, no longer need to the interior interpolation lubricant medium of oil storage tank 4, during engine start operation, pump-absorb action due to pump oil passage 7, even if only have micro-machine oil in oil storage tank 4, pump oil passage 7 also can be drawn onto oil pump seal lip 3 places, between seal lip 3 and bent axle 6, form lubricant film, eliminate dry friction.The utility model has solved the Properties of Dry Friction Problems of engine start initial operating stage oil sealing sealing lip 3 with bent axle 6 from designing, fundamentally solve the engine oil seal Leakage that seal lip 3 scaling loss that cause due to dry friction cause, improve the reliability of oil sealing.
In the utility model, oil storage tank 4 can be uniform a plurality of on the surface of sealing lip 2, cross hydraulic fluid port 5 and also can on oil storage tank 4, arrange one or more.The shape of oil storage tank 4 is not limited to curve bath, also can be other shapes, as rectangle.
As shown in Figure 4, the edge of pump oil passage 7 is projected as oblique line on bent axle cross section, i.e. the straight oil duct that be projected as oblique setting of pump oil passage 7 on bent axle cross section, and a plurality of pumps oil rotation directions of passage 7 are identical with the rotation direction of bent axle.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model.Previous embodiment has been described in detail the utility model, and for a person skilled in the art, its technological scheme that still can record aforementioned each embodiment is modified, or part technical characteristics is wherein equal to replacement.In every case within inventive concept scope of the present utility model, any modification of making, be equal to replacement, improvement etc., within being all included in protection domain of the present utility model.
Claims (9)
1. an oil sealing, comprise oil sealing body (1), oil sealing body (1) is provided with sealing lip (2), sealing lip (2) is provided with for by the seal lip of shaft sealing (3), it is characterized in that described sealing lip (2) is being provided with oil storage tank (4) near cavity end, described oil storage tank (4) extends upwardly to seal lip (3) away from the cell wall of cavity end, described oil storage tank (4) was provided with hydraulic fluid port (5) near the cell wall of cavity end, the internal surface of described oil storage tank (4) is provided with a plurality of oil of the pump to seal lip (3) pump oil passages (7), described pump oil passage (7) is extended to seal lip (3) by the bottom land of oil storage tank (4).
2. oil sealing according to claim 1, is characterized in that described oil storage tank (4) is curve bath.
3. oil sealing according to claim 2, is characterized in that described oil storage tank (4) ring is located at the surface of sealing lip (2).
4. oil sealing according to claim 3, is characterized in that the described end that hydraulic fluid port (5) ring is located at oil storage tank (4) of crossing.
5. according to the oil sealing described in any one in claim 1 to 4, it is characterized in that described pump oil passage (7) is for a plurality of, it is evenly periphery in oil storage tank (4).
6. oil sealing according to claim 5, is characterized in that the edge of described pump oil passage (7) is at the camber line that is projected as of axle cross section, and a plurality of pump oil rotation directions of passage are identical with the rotation direction of axle.
7. oil sealing according to claim 5, the edge that it is characterized in that described pump oil passage (7) is projected as oblique line on bent axle cross section, and a plurality of pumps oil rotation directions of passage are identical with the rotation direction of axle.
8. according to the oil sealing described in claim 6 or 7, it is characterized in that described pump oil passage (7) formed by offer oil groove at the internal surface of oil storage tank (4).
9. according to the oil sealing described in claim 6 or 7, it is characterized in that the internal surface of described oil storage tank (4) is provided with protruding pump oil muscle, between described adjacent two pumps oil muscle, form pump oil passage (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420303123.8U CN203926787U (en) | 2014-06-10 | 2014-06-10 | A kind of oil sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420303123.8U CN203926787U (en) | 2014-06-10 | 2014-06-10 | A kind of oil sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203926787U true CN203926787U (en) | 2014-11-05 |
Family
ID=51822598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420303123.8U Expired - Fee Related CN203926787U (en) | 2014-06-10 | 2014-06-10 | A kind of oil sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203926787U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111810639A (en) * | 2020-06-04 | 2020-10-23 | 江门市鑫辉密封科技有限公司 | Self-lubricating grease discharging sealing ring and sealing device |
-
2014
- 2014-06-10 CN CN201420303123.8U patent/CN203926787U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111810639A (en) * | 2020-06-04 | 2020-10-23 | 江门市鑫辉密封科技有限公司 | Self-lubricating grease discharging sealing ring and sealing device |
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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: 20141105 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |