CN201382155Y - Axially moving combined oil seal - Google Patents
Axially moving combined oil seal Download PDFInfo
- Publication number
- CN201382155Y CN201382155Y CN200920022377U CN200920022377U CN201382155Y CN 201382155 Y CN201382155 Y CN 201382155Y CN 200920022377 U CN200920022377 U CN 200920022377U CN 200920022377 U CN200920022377 U CN 200920022377U CN 201382155 Y CN201382155 Y CN 201382155Y
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- China
- Prior art keywords
- oil seal
- skeleton
- inner oil
- rubber
- axial motion
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- 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 relates to a sealing piece, in particular to an axially moving combined oil seal comprising an outer oil seal and an inner oil seal, wherein, the outer oil seal comprises a seal lip, an outer oil seal skeleton and a spring, the inner oil seal comprises an inner skeleton, the seal lip is in interference fit with the inner oil seal skeleton, a support ring is arranged between the outer skeleton and the inner oil seal skeleton, the support ring is fixedly connected to the inner oil seal skeleton, the outside diameter of the outer oil seal skeleton adopts a semi encapsulation structure, and a rubber outer ring is corrugated. The utility model has the advantages of simple structure, convenient heat dissipation, high assembly precision, and good leak tightness.
Description
Technical field
The utility model relates to a kind of Sealing, especially a kind of axial motion type combination oil seal.
Background technique
Oil sealing at present commonly used is generally the full rubber-wrapping structure of external diameter, and as shown in Figure 1, the skeleton outer ring is all wrapped by rubber, the oil sealing of this kind structure in use, heat dispersion is poor, because heat can not in time shed, causes reduce the working life of oil sealing.In addition, running shaft axial motion can occur inevitably in rotation, and general oil sealing is to install in the present hole by interference fit; therefore when axle produces axial motion; oil sealing can not cooperate preferably with running shaft, causes sealing effect poor, the phenomenon of leakage of oil and oil impregnate occurs through regular meeting.
Summary of the invention
The purpose of this utility model is to overcome the above-mentioned defective that existing oil sealing exists, and has proposed a kind of axial motion type combination oil seal, and it is simple in structure, is convenient to heat radiation, assembly precision height, good airproof performance.
The utility model is to adopt following technological scheme to realize: a kind of axial motion type combination oil seal, comprise outer oil seal and inner oil seal, wherein outer oil seal comprises sealing lip, outer oil seal skeleton and spring, inner oil seal comprises inner frame, is interference fit between sealing lip and the inner oil seal skeleton, wherein, be provided with support ring between outer skeleton and the inner oil seal skeleton, support ring is fixedly connected on the inner oil seal skeleton, and the external diameter of described outer oil seal skeleton adopts half rubber-wrapping structure, and the rubber outer ring has ripple.
In the utility model, the annular inboard of described inner oil seal skeleton is provided with rubber, has ripple on the rubber, and ripple is convenient to the installation of oil sealing, has played the effect of sealing simultaneously.Be provided with the gap between outer oil seal bottom and the inner oil seal skeleton, this gap width is 0.5～1mm, also has certain clearance between outer oil seal skeleton and the inner oil seal skeleton, and its gap width is 0.5～1mm.
In the utility model, be interference fit between inner oil seal and the outer oil seal.Wherein the external diameter of outer oil seal skeleton adopts half rubber-wrapping structure, the part external diameter that is the outer oil seal skeleton directly contacts with the seat hole wall, so the thermal diffusivity of oil sealing is better, and has improved the installation precision of oil sealing, have ripple on the outer ring rubber of outer oil seal simultaneously, make oil sealing be convenient to install; Support ring both can stop introduced contaminants to enter oil sealing, had also prevented coming off of outer oil seal spring simultaneously; Between outer oil seal and the inner oil seal skeleton certain clearance is set, when running shaft produced axial motion, above-mentioned gap made oil sealing improve the sealing effect of oil sealing with the running shaft axial motion.
The beneficial effects of the utility model are: this oil seal structure is simple, and its external diameter ripple half rubber-wrapping structure makes that whole oil sealing is easy to install, and the installation precision height, and thermal diffusivity is better; Axial motion gap between outer oil seal and the interior assembling skeleton can rotate and axial motion whole oil sealing with running shaft, and servo-actuated is good, has improved the sealing effect of oil sealing.
Description of drawings
Fig. 1 partly cuts open structural representation for rotary shaft oil seal in the prior art;
Fig. 2 is the structural representation that partly cuts open of the present utility model.
Embodiment
As shown in Figure 2, the utility model comprises outer oil seal 1 and inner oil seal 3, and wherein outer oil seal 1 comprises outer oil seal skeleton 2, and spring and sealing lip 4, inner oil seal 3 comprise the inner oil seal skeleton and be arranged on the rubber of skeleton annular inboard.In the outer oil seal 1, produce interference fit between the inner oil seal skeleton that sealing lip 4 is adjacent by spring.The external diameter of outer oil seal 1 adopts half rubber-wrapping structure, and promptly the external diameter of part skeleton 2 directly contacts with the seat hole wall, has circular wave on the outer ring rubber of outer oil seal 1 simultaneously, and this ripple is convenient to oil sealing is installed in the present hole.Be provided with support ring 3 ' between outer oil seal 1 and the inner oil seal 3, it both can prevent that impurity from entering in the oil sealing, also prevented coming off suddenly of oil sealing using process medi-spring simultaneously, had improved sealing effect.There is certain axial motion gap between outer oil seal 1 bottom and the inner oil seal skeleton, this gap width is between 0.5mm～1mm, also there is certain clearance between outer oil seal skeleton 2 and the inner oil seal skeleton simultaneously, this gap width is between 0.5mm～1mm, moving axially of oil sealing realized in above-mentioned gap, oil sealing can and be moved axially with running shaft rotation, cooperates better between oil sealing and the running shaft, improved the sealing effect of oil sealing.
This oil seal structure is simple, and is easy for installation and installation precision is high, and thermal diffusivity is better, and and running shaft between servo-actuated good, be mainly used in the automotive hub sealing.
Claims (5)
1, a kind of axial motion type combination oil seal, comprise outer oil seal and inner oil seal, wherein outer oil seal comprises sealing lip, outer oil seal skeleton and spring, inner oil seal comprises the inner oil seal skeleton, be interference fit between sealing lip and the inner oil seal skeleton, it is characterized in that: be provided with support ring between outer oil seal skeleton and the inner oil seal skeleton, support ring is fixedly connected on the inner oil seal skeleton, the external diameter of described outer oil seal skeleton adopts half rubber-wrapping structure, and the rubber outer ring has ripple.
2, axial motion type combination oil seal according to claim 1 is characterized in that: described inner oil seal skeleton annular inboard is provided with rubber.
3, axial motion type combination oil seal according to claim 2 is characterized in that: the rubber of described inner oil seal skeleton annular inboard is provided with ripple.
4, axial motion type combination oil seal according to claim 1 is characterized in that: be provided with the gap between described outer oil seal skeleton and the inner oil seal skeleton, this gap width is 0.5～1mm.
5, axial motion type combination oil seal according to claim 3 is characterized in that: be provided with the gap between described outer oil seal bottom and the inner oil seal skeleton, this gap width is 0.5～1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920022377U CN201382155Y (en) | 2009-02-25 | 2009-02-25 | Axially moving combined oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920022377U CN201382155Y (en) | 2009-02-25 | 2009-02-25 | Axially moving combined oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201382155Y true CN201382155Y (en) | 2010-01-13 |
Family
ID=41525630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920022377U Expired - Fee Related CN201382155Y (en) | 2009-02-25 | 2009-02-25 | Axially moving combined oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201382155Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016737A (en) * | 2012-12-31 | 2013-04-03 | 青岛开世密封工业有限公司 | Non-rubber oil seal |
| CN103277522A (en) * | 2013-06-15 | 2013-09-04 | 青岛开世密封工业有限公司 | Oil seal capable of lowering pressure of lip |
| CN107339436A (en) * | 2017-08-11 | 2017-11-10 | 徐州华通浮动油封科技有限公司 | A kind of combination oil seal |
| CN112145693A (en) * | 2020-10-15 | 2020-12-29 | 江西大杰科技产业有限公司 | Oil seal with good liquid leakage prevention effect |
-
2009
- 2009-02-25 CN CN200920022377U patent/CN201382155Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016737A (en) * | 2012-12-31 | 2013-04-03 | 青岛开世密封工业有限公司 | Non-rubber oil seal |
| CN103277522A (en) * | 2013-06-15 | 2013-09-04 | 青岛开世密封工业有限公司 | Oil seal capable of lowering pressure of lip |
| CN103277522B (en) * | 2013-06-15 | 2015-10-21 | 青岛开世密封工业有限公司 | A kind of oil sealing that can reduce pressure of lip |
| CN107339436A (en) * | 2017-08-11 | 2017-11-10 | 徐州华通浮动油封科技有限公司 | A kind of combination oil seal |
| CN112145693A (en) * | 2020-10-15 | 2020-12-29 | 江西大杰科技产业有限公司 | Oil seal with good liquid leakage prevention effect |
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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: 20100113 Termination date: 20110225 |