CN201187581Y - Combined two-sided oil seal - Google Patents
Combined two-sided oil seal Download PDFInfo
- Publication number
- CN201187581Y CN201187581Y CNU2008200189831U CN200820018983U CN201187581Y CN 201187581 Y CN201187581 Y CN 201187581Y CN U2008200189831 U CNU2008200189831 U CN U2008200189831U CN 200820018983 U CN200820018983 U CN 200820018983U CN 201187581 Y CN201187581 Y CN 201187581Y
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- China
- Prior art keywords
- oil seal
- boss
- inner oil
- sealing
- sided
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- Expired - Fee Related
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Abstract
The utility model relates to a sealing element, in particular to a combined double-sided oil seal used for simultaneously sealing the medium in adjacent different chambers in a lubrication system. The utility model overcomes the defects in the prior art that the installation of the oil seal is complex, the assembly space is large, and the operation and the inspection are inconvenient due to the simultaneous sealing to different oil sealing medium in the adjacent chambers. The combined double-sided oil seal comprises an internal oil seal and an external oil seal, wherein, the internal oil seal and the external oil seal respectively comprise a sealing lip, a framework and a spring, each sealing lip is provided with a backflow wire, wherein, the internal oil seal and the external oil seal are combined back to back, namely, the bottom surfaces of the internal oil seal and the external oil seal are opposite, the directions of the sealing lips of the internal oil seal and the external oil seal are opposite, the directions of the backflow wires of the two sealing lips are opposite, and the internal oil seal and the external oil seal are mutually connected. The utility model has the advantages that the installation is simple, the occupied space is greatly reduced after installation, simultaneously, the oil seal is convenient to be inspected, and the damaged oil seal can be accurately replaced in time, thus the normal lubricating work is guaranteed.
Description
Technical field
The utility model relates to a kind of Sealing, especially a kind of combined double-sided oil seal that medium in the two adjacent chambers in the lubrication system is sealed simultaneously.
Background technique
In the existing lubrication system,, oil sealing prevents leaking of lubricant medium or seepage by being set.When the medium in to lubrication system in adjacent two chambers seals simultaneously, oil sealing as shown in Figure 1 normally is set respectively in two chambers, during work, two above-mentioned oil sealings oppositely need be installed respectively, trouble is installed, it is bigger that the back occupation space is installed simultaneously, therefore is not suitable for the sealing to precision part, in addition this mode using and check and also caused inconvenience oil sealing.
Summary of the invention
The purpose of this utility model be to overcome in the prior art oil sealing that the lubricant medium to adjacent two chambers seals simultaneously install complicated, assembly space is big, use and check the defective of inconvenience, a kind of novel combined double-sided oil seal has been proposed, this oil sealing is easy for installation, the back occupation space is installed to be reduced greatly, be convenient to simultaneously oil sealing is checked, can change the oil sealing that damages timely and accurately, guarantee normally carrying out of lubricated work.
The utility model is to adopt following technological scheme to realize: a kind of combined double-sided oil seal, comprise inner oil seal and outer oil seal, wherein inner oil seal and outer oil seal comprise sealing lip, skeleton and spring respectively, and return wire is set all on the sealing lip, the bottom surface of wherein said inner oil seal and outer oil seal is relative, the sealing lip of inner oil seal and outer oil seal is opposite direction, and the return wire direction on two sealing lips is opposite, interconnects between inner oil seal and the outer oil seal.
In the utility model, inner oil seal can be connected by following mode with outer oil seal: the bottom of outer oil seal is provided with groove, and corresponding inner oil seal bottom evenly is provided with flange at interval, and inner oil seal is stuck in the groove by flange and is connected with outer oil seal; Also can groove be set in the bottom of inner oil seal, corresponding outer oil seal bottom evenly is provided with flange at interval, and outer oil seal is stuck in the groove by flange and is connected with inner oil seal; Also the skeleton of outer oil seal can be arranged on the outside of inner oil seal skeleton, the cooperation place of the outer surface of inner oil seal and outer oil seal and inner oil seal evenly is provided with boss at interval, form interference fit between boss and the outer oil seal skeleton inboard, perhaps boss evenly is set at interval at the internal surface of outer oil seal and the cooperation place of outer oil seal and inner oil seal, form interference fit between the boss and the inner oil seal skeleton outside, outer oil seal is connected by interference fit with inner oil seal; Also can make outer oil seal and inner oil seal be integral structure.Except that above-mentioned Placement, can also connect by modes such as pin connections between outer oil seal and the inner oil seal.
In the using process of oil sealing,, can between two oil sealings, certain clearance be set for the ease of checking its whether leakage of oil.The structure that boss is set by above-mentioned inner oil seal and outer oil seal cooperation place can make between inner oil seal and the outer oil seal and keep certain clearance, also can evenly be interval with hemisphere boss or cylindrical boss respectively in addition in the bottom of inner oil seal and outer oil seal outer rim, wherein the hemisphere boss that is provided with of outer oil seal bottom or cylindrical boss can insert in the hemisphere boss or the gap between the cylindrical boss that the inner oil seal bottom is provided with, and perhaps the hemisphere boss that is provided with of inner oil seal bottom or cylindrical boss can insert in the hemisphere boss or the gap between the cylindrical boss that the outer oil seal bottom is provided with.
In addition; the internal surface of inner oil seal and/or outer oil seal and the outside of sealing lip can be provided with back-up ring; this back-up ring can play the effect of guiding during the oil sealing assembling; come off when preventing the spring assembling simultaneously; several apertures evenly are set on the back-up ring at interval; this hole make the impact force of the lubricant medium that sealing lip is subjected to down in working order little and stressed evenly, sealing lip is played a protective role.The catch spring wall in the spring outside of inner oil seal and/or outer oil seal is provided with evenly arc boss spaced apart, can check directly by this arc boss whether the assembly process medi-spring comes off, and has guaranteed the proper functioning of oil sealing.
The beneficial effects of the utility model are: when using this double-sided oil seal, at first interior outer oil seal is installed, directly be assemblied in then between the adjacent lubricated chamber, therefore this oil sealing compared with prior art, compact structure, the manufacture cost of having saved oil sealing is installed simple, and assembling back occupation space is less, and this oil sealing has guaranteed that the lubricant medium of two side cavity does not leak and seepage mutually not simultaneously.Can check oil sealing whether leakage of oil in use by being arranged on gap between two oil sealings in addition, and when the lubricant medium of both sides not simultaneously, can also directly judge the oil sealing leakage of oil of which side according to the leakage of oil situation, be convenient to change timely and accurately the oil sealing of damage.
Description of drawings
Accompanying drawing 1 is the half sectional view to oil sealing in the prior art;
Accompanying drawing 2 is the half sectional view of oil sealing among the utility model embodiment 1;
Accompanying drawing 3 is a C portion boss schematic representation among Fig. 2;
Accompanying drawing 4 is a D portion boss schematic representation among Fig. 2;
Accompanying drawing 5 be among Fig. 2 A-B to catch spring wall boss schematic representation;
Accompanying drawing 6 is the half sectional view of oil sealing among the utility model embodiment 2;
Accompanying drawing 7 is the half sectional view of oil sealing among the utility model embodiment 3.
Embodiment
Embodiment 1
As shown in Figure 2, outer oil seal 1 is relative with the bottom of inner oil seal 2, and the sealing lip 3 of two oil sealings is opposite with 4 direction, and the direction of the return wire 5 of two sealing lips and 6 is opposite.Wherein the bottom of outer oil seal 1 is provided with groove 7, and the bottom of inner oil seal 2 evenly is provided with flange 8 at interval, and groove 7 bottoms are provided with a projection, is stuck on this projection after flange 8 inserts groove 7, has realized being connected of inner oil seal 2 and outer oil seal 1.The bottom outer rim of outer oil seal 1 and inner oil seal 2 all is provided with boss simultaneously, circumferencial direction along outer oil seal 1 bottom margin evenly is provided with cylindrical boss 9 at interval, its distribution situation as shown in Figure 3, the circumferencial direction of inner oil seal 2 bottom margins evenly is provided with hemisphere boss 10, its distribution situation as shown in Figure 4, the cylindrical boss 9 of outer oil seal 1 bottom can insert between the hemisphere boss 10 of inner oil seal 2 bottoms, its effect is still to have certain clearance after at first can making inner oil seal 2 and outer oil seal 1 combination, be convenient to check whether leakage of oil of oil sealing, and the oil sealing leakage of oil of which side; The adjustable angle that secondly can make inside and outside oil sealing rotate mutually and rotate makes between two oil sealings gap everywhere equate that all the assurance oil sealing is not adorned partially during the assembling oil sealing.The catch spring wall 17 in the sealing lip 3 of outer oil seal 1 and inner oil seal 2 and 4 the spring outside is provided with evenly arc boss spaced apart, as shown in Figure 5, can observe directly spring in the inside and outside oil sealing by this arc boss, whether come off in installation or assembly process so that check spring, in time change the oil sealing that damages, guaranteed the proper functioning of oil sealing.
When this double-sided oil seal uses, at first make inner oil seal 2 and rotation relative with the bottom surface of outer oil seal 1, flange 8 with inner oil seal 2 bottoms in the rotary course inserts in the groove 7 of outer oil seal 1 bottom, make inner oil seal 2 be connected the back with outer oil seal 1 and form this double-sided oil seal, then it is installed between adjacent two chambers of lubrication system, lubricant medium in two chambers can be the same or different, and inside and outside oil sealing seals the lubricant medium of sealing lip side separately respectively during use.After oil sealing used the long period, if a side seal wherein damages, lubricant medium can flow out along the gap between the inside and outside oil sealing, can judge in view of the above whether oil sealing damages; Lubricant medium in adjacent two chambers not simultaneously, the color by the lubricant medium that flows out in the gap etc. can also judge exactly which side seal damages, thereby the oil sealing that damages is changed timely and accurately.When therefore using this double-sided oil seal that the lubricant medium between the adjacent chamber is sealed, not only assembling and easy for installation, good sealing effect, and also inspection and maintenance is very convenient, is applicable to the sealing of the precision part that assembly space is less.
In the present embodiment, can groove be set in the bottom of inner oil seal, the bottom of outer oil seal evenly is provided with flange at interval, and flange inserts in the groove, thereby inner oil seal is connected with outer oil seal.The distribution of inner oil seal bottom boss simultaneously can be as shown in Figure 3, and the distribution of outer oil seal bottom boss as shown in Figure 4, and promptly the boss of inner oil seal bottom can insert between the boss that the outer oil seal bottom is provided with.
As shown in Figure 6, the skeleton 11 of outer oil seal 1 is arranged on the outside of the skeleton 12 of inner oil seal 2, the cooperation place of the outer surface of inner oil seal 2 and outer oil seal 1 and inner oil seal 2 evenly is interval with boss 13, form interference fit between boss 13 and the outer oil seal 1, be connected by interference fit between inner oil seal 2 and the outer oil seal 1, guaranteed to have certain clearance between inner oil seal 2 and the outer oil seal 1 by boss 13 simultaneously, after inside and outside oil sealing damages, lubricant medium can flow out along this gap, is convenient to the inspection of oil sealing and replacing in time.The outside of the sealing lip 4 of the internal surface of inner oil seal 2 and inner oil seal 2 is provided with back-up ring 15, and this back-up ring 15 both can play the effect of guiding when oil sealing assembles, and has prevented that also inner oil seal spring 14 from falling the spring phenomenon simultaneously.Back-up ring 15 is provided with the hole 16 that is evenly distributed in addition, and this hole has reduced the impact force of the lubricant medium that is subjected under sealing lip 4 working staties of inner oil seal 2, and stressedly evenly plays the effect of protection sealing lip 4, has prolonged the working life of oil sealing.
In the present embodiment, also can at interval boss be set with the cooperation place of inner oil seal 2 is even, form interference fit between this boss and the inner oil seal, thereby inner oil seal is connected with outer oil seal at the internal surface and the outer oil seal 1 of outer oil seal 1.
Other are with embodiment 1.
In the present embodiment, outer oil seal 1 and inner oil seal 2 are integral structure.The double-sided oil seal of this structure is convenient to the manufacturing of oil sealing, need not simultaneously inner oil seal and outer oil seal are installed and can directly be used.
In addition, the oil sealing of this structure also can be used with other oil sealings, thereby realizes other seal actions.
Other are with embodiment 1.
Claims (10)
1, a kind of combined double-sided oil seal, comprise inner oil seal and outer oil seal, wherein inner oil seal and outer oil seal comprise sealing lip, skeleton and spring respectively, and return wire is set all on the sealing lip, it is characterized in that: the bottom surface of described inner oil seal and outer oil seal is relative, the sealing lip of inner oil seal and outer oil seal is opposite direction, and the return wire direction on two sealing lips is opposite, interconnects between inner oil seal and the outer oil seal.
2, combined double-sided oil seal according to claim 1 is characterized in that: the bottom of outer oil seal is provided with groove, and corresponding inner oil seal bottom evenly is provided with flange at interval, and inner oil seal is stuck in the groove by flange and is connected with outer oil seal.
3, combined double-sided oil seal according to claim 1 is characterized in that: the bottom of inner oil seal is provided with groove, and corresponding outer oil seal bottom evenly is provided with flange at interval, and outer oil seal is stuck in the groove by flange and is connected with inner oil seal.
4, combined double-sided oil seal according to claim 1, it is characterized in that: the skeleton of described outer oil seal is arranged on the outside of inner oil seal skeleton, the cooperation place of the outer surface of inner oil seal and outer oil seal and inner oil seal evenly is provided with boss at interval, form interference fit between boss and the outer oil seal skeleton inboard, make simultaneously between inner oil seal and the outer oil seal to have certain clearance.
5, combined double-sided oil seal according to claim 1, it is characterized in that: the skeleton of described outer oil seal is arranged on the outside of inner oil seal skeleton, the cooperation place of the internal surface of outer oil seal and outer oil seal and inner oil seal evenly is provided with boss at interval, form interference fit between the boss and the inner oil seal skeleton outside, make simultaneously between inner oil seal and the outer oil seal to have certain clearance.
6, combined double-sided oil seal according to claim 1 is characterized in that: described outer oil seal and inner oil seal are integral structure.
7, according to claim 2 or 3 described combined double-sided oil seals, it is characterized in that: the bottom outer rim of described inner oil seal and outer oil seal evenly is interval with hemisphere boss or cylindrical body boss respectively, and wherein the hemisphere boss of outer oil seal bottom setting or cylindrical boss can insert in the hemisphere boss or the gap between the cylindrical boss of inner oil seal bottom setting.
8, according to claim 2 or 3 described combined double-sided oil seals, it is characterized in that: the bottom outer rim of described inner oil seal and outer oil seal evenly is interval with hemisphere boss or cylindrical body boss respectively, and wherein the hemisphere boss of inner oil seal bottom setting or cylindrical boss can insert in the hemisphere boss or the gap between the cylindrical boss of outer oil seal bottom setting.
9, combined double-sided oil seal according to claim 1 is characterized in that: back-up ring is installed in the internal surface of described inner oil seal and/or outer oil seal and the outside of sealing lip, and the hole evenly is set on the back-up ring at interval.
10, combined double-sided oil seal according to claim 1 is characterized in that: the catch spring wall in the described inner oil seal and/or the outer oil seal spring outside is provided with the arc boss that is evenly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200189831U CN201187581Y (en) | 2008-03-20 | 2008-03-20 | Combined two-sided oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200189831U CN201187581Y (en) | 2008-03-20 | 2008-03-20 | Combined two-sided oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201187581Y true CN201187581Y (en) | 2009-01-28 |
Family
ID=40310603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200189831U Expired - Fee Related CN201187581Y (en) | 2008-03-20 | 2008-03-20 | Combined two-sided oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201187581Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101539202B (en) * | 2008-03-20 | 2012-06-13 | 青岛开世密封工业有限公司 | Combined double-sided oil seal |
| CN112074676A (en) * | 2018-07-17 | 2020-12-11 | Nok株式会社 | Sealing device |
-
2008
- 2008-03-20 CN CNU2008200189831U patent/CN201187581Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101539202B (en) * | 2008-03-20 | 2012-06-13 | 青岛开世密封工业有限公司 | Combined double-sided oil seal |
| CN112074676A (en) * | 2018-07-17 | 2020-12-11 | Nok株式会社 | Sealing device |
| CN112074676B (en) * | 2018-07-17 | 2022-12-23 | Nok株式会社 | Sealing device |
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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: 20090128 Termination date: 20110320 |