CN201486684U - Rear oil seal sealing assembly for crank shaft - Google Patents
Rear oil seal sealing assembly for crank shaft Download PDFInfo
- Publication number
- CN201486684U CN201486684U CN2009200297845U CN200920029784U CN201486684U CN 201486684 U CN201486684 U CN 201486684U CN 2009200297845 U CN2009200297845 U CN 2009200297845U CN 200920029784 U CN200920029784 U CN 200920029784U CN 201486684 U CN201486684 U CN 201486684U
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- oil seal
- skeleton
- frame
- sealing
- seal
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Abstract
The utility model belongs to sealing devices, and particularly relates to an oil seal for a crank shaft of an engine. The oil seal aims to overcome the shortcomings of an existing oil seal for an engine crank shaft that end surface sealing effect is comparatively poor, the existing oil seal is not easy to be positioned, service life is short, and the like. A rear oil seal sealing assembly for a crank shaft has novel structure and comprises a frame and sealing lips; end surface sealing glue lines are arranged on the end surface of the frame; threaded holes are respectively arranged on the left side and the right side of the position of the frame close to the lower portion; four holes are arranged at the bottom of the frame; metal washers are respectively arranged inside the four holes so as to enable the upper surfaces of the end surface sealing glue lines to be positioned on the same plane and be parallel to the surface of the frame; notches are respectively arranged on the left side and the right side of the middle portion of the frame; rubber columns are respectively arranged inside the two threaded holes on the frame; and square grid sealing lines are arranged at the position of combination of the left side and the right side at the bottom of the frame and a bridge frame. The rear oil seal sealing assembly improves end surface sealing effect of a crank shaft oil seal, simplifies the structures of the frame and a corresponding vulcanizing module, and prolongs the service life of the oil seal.
Description
Technical field
The utility model belongs to seal arrangement, relates in particular to a kind of oil sealing that is used for engine crankshaft.
Background technique
The structure of at present common engine crankshaft oil sealing as shown in the figure, it comprises skeleton 1 and lip seal lip 2, the bottom of skeleton 1 is provided with four tapped holes 3.This oil sealing installs that the back is main to be cooperated with tapped hole jam-packed on the crane span structure by the rubber body 4 on four tapped holes in bottom, play positioning action simultaneously, motor is through after working long hours, the rubber body performance reduces, the screw fastening force descends accordingly, causes the sealing load of base sealing line to reduce, thereby produces leakage of oil, simultaneously the both sides in four holes, skeleton bottom can not machined grooves, makes its both sides sealing tree lace excessive and not have Free up Memory damaged or come off because of pressure; Secondly, face seal is generally adopted in crane span structure and this oil seal body junction, on the crane span structure correspondence be provided with the screw thread chamfering, the screw thread chamfering is sharp-pointed, cuts the screw thread tree lace easily, causes seal failure; In addition, this oil sealing does not have suitable location when assembling, be easy to cause installation not just, forms excessive offset, can cause the seal failure of oil sealing yet.In a word, the engine crankshaft oil sealing end face seal effect of existing structure is poor, is difficult for the location, and working life is short.
Summary of the invention
The purpose of this utility model is to overcome the above-mentioned defective that existing engine crankshaft oil sealing exists, a kind of bent axle Rear oil seal seal assembly of new structure has been proposed, it improves on existing engine crankshaft oil sealing, improved the end face seal effect of crank shaft oil seal, simplify the structure of skeleton and corresponding vulcanization die, prolonged the working life of oil sealing.
The utility model is to adopt following technological scheme to realize: a kind of bent axle Rear oil seal seal assembly, comprise skeleton and sealing lip, the skeleton end face is provided with the end face seal tree lace, skeleton is respectively equipped with tapped hole near the left and right sides of lower position, and the skeleton bottom is provided with four holes, wherein, be respectively equipped with metal washer in four holes of described skeleton bottom, make the upper surface of end face seal tree lace in the same plane and parallel with the skeleton surface, the left and right sides at skeleton middle part is provided with breach respectively, be respectively equipped with rubber column in two tapped holes on the skeleton, the skeleton left and right sides, bottom and crane span structure junction are provided with grid-like potted line.
In the utility model, the sealing lip lip seal can adopt two kinds of materials in the end face seal tree lace, promptly can be made into common rubber running shaft lip oil seal structure, also can be made by the PTFE material of sheet.Above-mentioned two kinds of structural types all satisfy the sealing needs of oil sealing.The working surface of sealing lip is provided with threaded line.
Described packing ring can be arranged on around four tapped holes of skeleton bottom by bonding or welding manner, and coaxial with the hole.Packing ring makes the upper surface of end face seal tree lace in the same plane, so the end face seal tree lace is not easily broken, has also avoided the loss of four the screw torsion in bottom simultaneously, has guaranteed the end face seal effect of oil sealing.Make full use of the existing tapped hole in skeleton both sides, and in tapped hole, set up rubber column, make oil sealing be convenient to installing and locating, reduced the offset that oil sealing is installed.During oil sealing assembling jam-packed bolt, skeleton is yielding, and the breach by the left and right sides, skeleton middle part can discharge the stress that produces because of framework deformation, has reduced the irreversible transformation of skeleton.Change the sealing oil face seal between skeleton body and the crane span structure into the linear sealing structure, both saved sizing material, be convenient to again discharge the resiliently deformable that the end face seal tree lace produces, improved sealing effect.
The beneficial effects of the utility model are: the structure of having simplified skeleton and corresponding vulcanization die, the distortional stress that produces when being convenient to discharge the oil sealing assembling, reduced the torsion loss of four screws in oil sealing bottom, improve the sealing effect of oil sealing greatly, especially end face seal effect, prolong the working life of oil sealing, and reduced the use amount of sizing material, reduced the manufacture cost of oil sealing.
Description of drawings
Fig. 1 is the structural representation of existing bent axle Rear oil seal;
Fig. 2 is the structural representation of bent axle Rear oil seal in the utility model;
Fig. 3 for the A-A of Fig. 2 when the sealing lip employing rubbery sealed body to sectional view;
Fig. 4 is that the B-B of Fig. 2 is to cutaway view Amplified image;
Fig. 5 for the A-A of Fig. 2 when the sealing lip employing PTFE sheet to sectional view.
Embodiment
As shown in Figures 2 and 3, this bent axle Rear oil seal comprises skeleton 1 and sealing lip 8, wherein the surface of skeleton 1 is provided with end face seal tree lace 2, and this adhesive tape is around the surface of skeleton 1, and the bottom of skeleton 1 is provided with four holes 5, the hole bonds on every side or is welded with packing ring, packing ring is coaxial with hole 5, makes the upper surface of end face seal tree lace 2 in the same plane by packing ring, and parallels with the surface of skeleton 1, end face seal this moment tree lace 2 is not easily broken, has guaranteed the effect of end face seal.Skeleton 1 is provided with tapped hole near the left and right sides of bottom, and rubber column 3 is installed in the tapped hole, and by being threaded, rubber column 3 makes oil sealing increase the location, the offset that produces when reducing to assemble between rubber column 3 and the tapped hole.Be respectively equipped with breach 7 on the dual-side at skeleton 1 middle part, it is used to discharge oil sealing the distortional stress that the back is produced is installed.The junction of skeleton 1 and crane span structure is that the both sides, bottom of skeleton 1 all are provided with grid-like potted line 6, as shown in Figure 4, the sealing line makes the linear sealing that is sealed between skeleton and the crane span structure, this kind sealing means has promptly been saved sizing material, be convenient to discharge the resiliently deformable of rubber simultaneously, can improve the sealing effect of oil sealing.As shown in Figure 3, end face seal tree lace 2 and sealing lip 8 can be formed by the rubber material manufacturing.The working surface of sealing lip 8 is provided with threaded line.
Other is with embodiment 1.
Claims (5)
1. bent axle Rear oil seal seal assembly, comprise skeleton and sealing lip, skeleton is respectively equipped with tapped hole near the left and right sides of lower position, the skeleton end face is provided with the end face seal tree lace, and the skeleton bottom is provided with four holes, it is characterized in that: be respectively equipped with metal washer in four holes of described skeleton bottom, make the upper surface of end face seal tree lace in the same plane and parallel with the skeleton surface, the left and right sides of skeleton is provided with breach respectively, be provided with the cylindrical rubber body in the tapped hole of skeleton, the crane span structure and the body junction of the left and right sides, skeleton bottom are provided with grid-like potted line.
2. bent axle Rear oil seal seal assembly according to claim 1 is characterized in that: described sealing lip lip and end face seal tree lace are the rubber seal body structure.
3. bent axle Rear oil seal seal assembly according to claim 1 is characterized in that: described sealing lip lip adopts the PTFE sheet structure.
4. bent axle Rear oil seal seal assembly according to claim 1 is characterized in that: described packing ring is fixed on around four holes of skeleton bottom by bonding or welding manner, and coaxial with the hole.
5. bent axle Rear oil seal seal assembly according to claim 1 is characterized in that: on the described sealing lip working surface threaded line is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200297845U CN201486684U (en) | 2009-07-16 | 2009-07-16 | Rear oil seal sealing assembly for crank shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200297845U CN201486684U (en) | 2009-07-16 | 2009-07-16 | Rear oil seal sealing assembly for crank shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201486684U true CN201486684U (en) | 2010-05-26 |
Family
ID=42425562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200297845U Expired - Fee Related CN201486684U (en) | 2009-07-16 | 2009-07-16 | Rear oil seal sealing assembly for crank shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201486684U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909795A (en) * | 2016-06-30 | 2016-08-31 | 广东亿达汽车密封件有限公司 | PTFE engine oil seal of PPS material framework |
-
2009
- 2009-07-16 CN CN2009200297845U patent/CN201486684U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909795A (en) * | 2016-06-30 | 2016-08-31 | 广东亿达汽车密封件有限公司 | PTFE engine oil seal of PPS material framework |
| CN105909795B (en) * | 2016-06-30 | 2018-01-05 | 广东亿达汽车密封件有限公司 | The PTFE engine oil seals of PPS material skeletons |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20170716 |