CN201753765U - Rotating shaft oil seal - Google Patents
Rotating shaft oil seal Download PDFInfo
- Publication number
- CN201753765U CN201753765U CN2010202963222U CN201020296322U CN201753765U CN 201753765 U CN201753765 U CN 201753765U CN 2010202963222 U CN2010202963222 U CN 2010202963222U CN 201020296322 U CN201020296322 U CN 201020296322U CN 201753765 U CN201753765 U CN 201753765U
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- China
- Prior art keywords
- seal
- rotary shaft
- oil seal
- shaft oil
- oil
- 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 provides a rotating shaft oil seal, which can solve the problems of easy oil leakage, low reliability and short service life in prior art. The rotating shaft oil seal comprises a seal lip mouth, a dustproof lip mouth, a waist and an oil seal outer circle, the refluxing line depth from the waist to the seal lip mouth is descended gradually, namely the refluxing line is changed from deep to shallow gradually, accordingly, the pumping effect of the refluxing line of the seal lip mouth is improved, the oil is not easy to leak during shutdown, the seal effect is good, and the reliability and the service life can be greatly improved.
Description
Technical field
The utility model relates to a kind of oil sealing, relates in particular to a kind of rotary shaft oil seal.
Background technique
Rotary shaft oil seal is used for the running shaft of motor car engine, vehicle bridge gearbox more, and technical field such as other mechanical rotation axle.Existing rotary shaft oil seal, referring to Fig. 1, the employing nitrile butadiene rubber is made, its return wire is the general expression structure, return wire from waist to seal lip degree of depth unanimity, then the seal lip place also can store more lubricant oil, because seal lip is positioned at outer portion, then the internal lubrication grease oozes out easily during engine shutdown; Dustproof lip is unsuitable for storage lubricating grease for following big-eared formula convex; In addition, the nitrile butadiene rubber non-refractory can only be in long-term work below 120 °, and along with running shaft constantly rotates, lubricating oil temperature raises in the oil sealing, and nitrile butadiene rubber was lost efficacy, and finally causes the oil sealing leakage of oil; Therefore, the existing easy oil impregnate of rotary shaft oil seal, reliability is low, working life is short.
Summary of the invention
Problems such as the utility model provides a kind of rotary shaft oil seal, and easy oil impregnate, the reliability that can solve the prior art existence is low, working life is short.
In order to reach the purpose that solves the problems of the technologies described above, the technical solution of the utility model is, a kind of rotary shaft oil seal comprises seal lip, dustproof lip, waist and oil sealing cylindrical, and the return wire degree of depth of described waist to the return wire degree of depth of seal lip is successively decreased gradually.
In the technical solution of the utility model, also have following technical characteristics:
The return wire degree of depth of described waist to the return wire degree of depth of seal lip is decremented to 0.04 ± 0.005mm gradually by 0.1 ± 0.005mm.。
Described dustproof lip is presented and is stuck up the formula convex.
Described oil sealing cylindrical is corrugated.
Described rotary shaft oil seal adopts resistant to elevated temperatures fluorine rubber to make.
Compared with prior art, the utlity model has following advantage and good effect:
1, the utility model rotary shaft oil seal, by oil sealing waist to the degree of depth of the return wire of seal lip is successively decreased successively, be that return wire is by shoaling deeply gradually, the seal lip return wire degree of depth is less, then oil reserve is less, improved the pump of seal lip return wire and inhaled effect, made to be difficult for oil impregnate, good sealing effect when shutting down;
2, dustproof lip adopts the bending upwards type convex design, can make seal lip obtain sufficient lubrication at the space storage compartment lubricating grease between projection and the rubbery sealed body;
3, the oil sealing cylindrical is a corrugated, the frictional force in oil sealing cylindrical and oil sealing base hole, assembling easily when having reduced assembling;
4, the utility model rotary shaft oil seal adopts resistant to elevated temperatures fluorine rubber to make, and has improved reliability and working life greatly.
Description of drawings
Fig. 1 is the structural representation of prior art rotary shaft oil seal;
Fig. 2 is an embodiment's of the utility model rotary shaft oil seal a structural representation;
Fig. 3 is an A-A rotation partial enlarged drawing among Fig. 2;
Among the figure, 1, seal lip; 2, dustproof lip; 3, waist; 4, oil sealing cylindrical; h
1, waist the return wire degree of depth; h
2, seal lip the return wire degree of depth; 5, rubbery sealed body; 6, oil sealing base hole.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with the accompanying drawing among the utility model embodiment, technological scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figures 2 and 3, a kind of rotary shaft oil seal comprises seal lip 1, dustproof lip 2, waist 3 and oil sealing cylindrical 4, the return wire degree of depth h of waist
1Return wire degree of depth h to seal lip
2Successively decrease gradually, promptly waist 3 to 1 return wire of seal lip by shoaling deeply gradually.
The present embodiment rotary shaft oil seal by oil sealing waist to the degree of depth of the return wire of seal lip is successively decreased successively, has improved the pump of seal lip return wire and has inhaled effect, makes to be difficult for oil impregnate, good sealing effect when shutting down.
Based on technique scheme, optionally, inhale effect for the return wire pump that makes seal lip 1 and reach best effect, the return wire degree of depth h of waist
1Return wire degree of depth h to seal lip
2Be decremented to 0.04 ± 0.005mm gradually by 0.1 ± 0.005mm.In the present embodiment, the return wire degree of depth h of waist
1Return wire degree of depth h to seal lip
2Evenly successively decrease, the backflow number of lines is 74.
Dustproof lip 2 is the bending upwards type convex.Form one between the projection that this structure can make dustproof lip 2 and the rubbery sealed body 5 and enclose the space of indent, can be in this space storage compartment lubricating grease, make seal lip obtain sufficient lubrication.
Based on technique scheme, optionally, the frictional force in oil sealing cylindrical and oil sealing base hole 6 makes it be easy to assemble in order to reduce to assemble, and oil sealing cylindrical 4 is a corrugated.The surface of oil sealing cylindrical 4 is rough corrugated like this, has reduced the frictional force of itself and oil sealing base hole 6 internal surfaces greatly.
Described rotary shaft oil seal is whole to adopt resistant to elevated temperatures fluorine rubber to make.Fluorine rubber has outstanding high temperature resistance and aging quality resistance, adapts to the higher environment of oil temperature of present embodiment rotary shaft oil seal, the working life of having improved the present embodiment rotary oil seal greatly.
It is big that the utility model rotary shaft oil seal novel structure, seal lip return wire pump are inhaled effect, is difficult for oil impregnate during shutdown, and good sealing effect is oil-proof through sit quietly platform experiment and sport car experiment about 1000 hours in working life, about 150,000 kilometers of distance travelleds.
The above, it only is preferred embodiment of the present utility model, be not to be the restriction of the utility model being made other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solutions of the utility model content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment did, still belongs to the protection domain of technical solutions of the utility model according to technical spirit of the present utility model.
Claims (5)
1. a rotary shaft oil seal comprises seal lip, dustproof lip, waist and oil sealing cylindrical, and it is characterized in that: the return wire degree of depth of described waist to the return wire degree of depth of seal lip is successively decreased gradually.
2. a kind of rotary shaft oil seal according to claim 1 is characterized in that: the return wire degree of depth of described waist to the return wire degree of depth of seal lip is decremented to 0.04 ± 0.005mm gradually by 0.1 ± 0.005mm.
3. a kind of rotary shaft oil seal according to claim 2 is characterized in that: described dustproof lip is presented and is stuck up the formula convex.
4. a kind of rotary shaft oil seal according to claim 3 is characterized in that: described oil sealing cylindrical is corrugated.
5. according to the described a kind of rotary shaft oil seal of claim 1 to 4, it is characterized in that: described rotary shaft oil seal adopts resistant to elevated temperatures fluorine rubber to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202963222U CN201753765U (en) | 2010-08-12 | 2010-08-12 | Rotating shaft oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202963222U CN201753765U (en) | 2010-08-12 | 2010-08-12 | Rotating shaft oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201753765U true CN201753765U (en) | 2011-03-02 |
Family
ID=43621497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202963222U Expired - Fee Related CN201753765U (en) | 2010-08-12 | 2010-08-12 | Rotating shaft oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201753765U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104321567A (en) * | 2012-05-16 | 2015-01-28 | Nok株式会社 | Buffer ring |
-
2010
- 2010-08-12 CN CN2010202963222U patent/CN201753765U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104321567A (en) * | 2012-05-16 | 2015-01-28 | Nok株式会社 | Buffer ring |
| CN104321567B (en) * | 2012-05-16 | 2017-06-16 | Nok株式会社 | Buffer |
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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: 20110302 Termination date: 20160812 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |