CN2675968Y - Engine crankshaft oil seal - Google Patents
Engine crankshaft oil seal Download PDFInfo
- Publication number
- CN2675968Y CN2675968Y CNU2004200035500U CN200420003550U CN2675968Y CN 2675968 Y CN2675968 Y CN 2675968Y CN U2004200035500 U CNU2004200035500 U CN U2004200035500U CN 200420003550 U CN200420003550 U CN 200420003550U CN 2675968 Y CN2675968 Y CN 2675968Y
- Authority
- CN
- China
- Prior art keywords
- lip
- engine crankshaft
- seal
- utility
- sealing
- 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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- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model belongs to a sealing device, and in particular to an oil seal used for an engine crankshaft. The utility model is provided with a lamellar seal lip whose working face is provided with a reflux line, and the back side of the seal lip relative with the working face is provided with a screw thread line. The oil seal used for an engine crankshaft of the utility model has the lamellar seal lip, the reflux line on the working face of the seal lip and the screw thread line arranged on the back side of the seal lip relative with the working face so as to form a wave-shaped lip slice, so that the flexibility and the dynamic following performance of the lip slice are improved, the friction between the lip slice and a shaft and the fastening force are decreased, and the stability of the seal is also improved.
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
Present engine crankshaft oil sealing, sealing lip mostly adopt PTFE lip sheet, and at the working surface of lip sheet return wire are set, as shown in Figure 1.Because hardness height, the pliability of PTFE material are poor, thus big to the power of holding tightly of axle during its work, and the moment of torsion of startup is big, makes axle be easy to be worn, thereby causes sealability to reduce.
Summary of the invention
The purpose of this utility model provides a kind of oil sealing that is used for engine crankshaft that seals good stability.
For achieving the above object, the utility model comprises the sealing lip of sheet, and the working surface of sealing lip is provided with return wire, with the working surface opposing backside surface threaded line is set also on the sealing lip.
The return wire rotation direction of the threaded line at the sealing lip back side and working surface is identical and shift to install, and forms waveform.
The utility model engine crankshaft oil sealing is because the sealing lip of sheet, the working surface of sealing lip is provided with return wire, with the working surface opposing backside surface threaded line is set also on the sealing lip, the pliability and the dynamic following of lip sheet have been improved, reduced the power of holding tightly and and axle between friction, improved the stability of sealing.
Description of drawings
Fig. 1 is a prior art engine crankshaft oil seal structure schematic representation;
Fig. 2 is the utility model structural representation.
Embodiment
The structure of the utility model engine crankshaft oil sealing as shown in Figure 2, it comprises belt rubbery sealed body 1 and embeds wherein belt metal frame 2 that the anterior bonding of the inner peripheral surface of seal 1 PTFE lip sheet 3 is as primary seal lip; In addition, seal 1 inner peripheral surface rear portion extends to form secondary sealing lip 4; In the ear end face of seal 1 felt piece 5 that also bonds, as dust excluder lips.
The working surface of PTFE lip sheet is provided with return wire, and the back side of lip sheet also is provided with threaded line; Two return wire rotation directions are identical and shift to install whole lip sheet formation waveform.
The utility model engine crankshaft oil sealing is because the sealing lip of sheet, the working surface of sealing lip is provided with return wire, with the working surface opposing backside surface threaded line is set also on the sealing lip, make the lip sheet form waveform, the pliability and the dynamic following of lip sheet have been improved, reduced the power of holding tightly and and axle between friction, improved the stability of sealing.
Claims (3)
1. engine crankshaft oil sealing, it comprises the sealing lip of sheet, the working surface of sealing lip is provided with threaded line, it is characterized in that with the working surface opposing backside surface threaded line being set also on the sealing lip.
2. engine crankshaft oil sealing according to claim 1 is characterized in that the threaded line at the sealing lip back side is identical with the threaded line rotation direction of working surface.
3. engine crankshaft oil sealing according to claim 2 is characterized in that the threaded line at the sealing lip back side and the threaded line of working surface shift to install, and forms waveform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200035500U CN2675968Y (en) | 2004-02-16 | 2004-02-16 | Engine crankshaft oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200035500U CN2675968Y (en) | 2004-02-16 | 2004-02-16 | Engine crankshaft oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2675968Y true CN2675968Y (en) | 2005-02-02 |
Family
ID=34482405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2004200035500U Expired - Fee Related CN2675968Y (en) | 2004-02-16 | 2004-02-16 | Engine crankshaft oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2675968Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996808A (en) * | 2012-12-13 | 2013-03-27 | 青岛北海油封有限公司 | Protective oil seal |
| CN105736705A (en) * | 2016-05-05 | 2016-07-06 | 青岛开世密封工业有限公司 | High-horsepower engine crankshaft polytetrafluoroethylene (PTFE) combined oil seal |
| CN106574721A (en) * | 2014-08-20 | 2017-04-19 | Nok株式会社 | Sealing structure |
| CN106832696A (en) * | 2017-02-25 | 2017-06-13 | 青岛汉兴新材料有限公司 | A kind of modified polytetrafluoroethylcomposite composite material and preparation method thereof and a kind of sealing system |
| CN108799499A (en) * | 2017-04-27 | 2018-11-13 | 卡尔·弗罗伊登伯格公司 | sealing device |
-
2004
- 2004-02-16 CN CNU2004200035500U patent/CN2675968Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996808A (en) * | 2012-12-13 | 2013-03-27 | 青岛北海油封有限公司 | Protective oil seal |
| CN102996808B (en) * | 2012-12-13 | 2015-05-13 | 青岛北海油封有限公司 | Protective oil seal |
| CN106574721A (en) * | 2014-08-20 | 2017-04-19 | Nok株式会社 | Sealing structure |
| CN105736705A (en) * | 2016-05-05 | 2016-07-06 | 青岛开世密封工业有限公司 | High-horsepower engine crankshaft polytetrafluoroethylene (PTFE) combined oil seal |
| CN106832696A (en) * | 2017-02-25 | 2017-06-13 | 青岛汉兴新材料有限公司 | A kind of modified polytetrafluoroethylcomposite composite material and preparation method thereof and a kind of sealing system |
| CN108799499A (en) * | 2017-04-27 | 2018-11-13 | 卡尔·弗罗伊登伯格公司 | sealing device |
| US11131386B2 (en) | 2017-04-27 | 2021-09-28 | Carl Freudenberg Kg | Seal |
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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: 20050202 Termination date: 20120216 |