CN208431375U - A kind of combination oil seal structure - Google Patents
A kind of combination oil seal structure Download PDFInfo
- Publication number
- CN208431375U CN208431375U CN201820969969.3U CN201820969969U CN208431375U CN 208431375 U CN208431375 U CN 208431375U CN 201820969969 U CN201820969969 U CN 201820969969U CN 208431375 U CN208431375 U CN 208431375U
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- Prior art keywords
- spring
- skeleton
- lip
- seal
- oil seal
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Abstract
The utility model provides a kind of combination oil seal structure, including the second seal (10) and the second skeleton (12), form a fixed connection structure between second seal (10) and the second skeleton (12), secondary lip (6) and outer secondary lip (9) in being formed on second seal (10), the second spring (7) of secondary lip (6) in ring is set on the outside of the interior secondary lip (6), the third spring (11) of the outer secondary lip (9) of setting ring on the outside of the outer secondary lip (9), the second spring (7), third spring (11) is located at the opposite sides of the second skeleton (12).When the utility model and main shaft are used cooperatively, Multi-point sealing structure can be formed between the two, second spring therein, third spring can also be respectively that the lip where it provides permanent back-off radial force, greatly improve the sealing reliability of oil seal product.
Description
Technical field
The utility model relates to oil enveloping structure design fields, more particularly, to a kind of combination oil seal structure.
Background technique
Outer secondary unlubricated dose of lip in traditional oil enveloping structure, as the spindle turns, main shaft surface can rub with lip
It wipes and lip is caused to wear, until oil seal failure.After outer secondary lip mill is rotten to be ground off, the impurity such as extraneous dust, muddy water will
Into near interior secondary lip, to accelerate the abrasion of interior secondary lip, until failure.After interior secondary lip failure, dust, muddy water
And its sundries that abrasion generates can enter near main lip again, and then cause main lip that abrasive wear occurs and fails, and cause
Oil leak.
Utility model content
Technical problem to be solved by the utility model is: in view of the problems of the existing technology, providing a kind of combination oil seal
Structure improves the sealing reliability of oil seal product.
The technical problems to be solved in the utility model is realized using following technical scheme: a kind of combination oil seal structure, packet
The second seal and the second skeleton are included, form a fixed connection structure between second seal and the second skeleton, and described
Interior secondary lip and outer secondary lip are formed on two seals, and the second spring of secondary lip in ring, institute are set on the outside of the interior secondary lip
The third spring of the outer secondary lip of setting ring on the outside of outer secondary lip is stated, the second spring, third spring are located at the second bone
The opposite sides of frame.
Preferably, further include the first seal and the first skeleton, form main lip on first seal, described
It is fixedly connected between one skeleton and the second skeleton by the first seal into a single integrated structure.
Preferably, the first spring of the outside setting main lip of ring of the main lip.
Preferably, further include baffle, form Hermetical connecting structure between the baffle and the second skeleton.
Preferably, the T-shaped structure of the second skeleton, shape between the relatively long side and baffle in second skeleton
At sealing structure is rabbeted, the relatively short side in second skeleton is between second spring and third spring.
Preferably, groove is formed on second seal, fills lubricating grease in the groove.
Preferably, wave structure is formed on the outer circle outside of second seal.
Compared with prior art, the utility model has the beneficial effects that passing through secondary lip in setting ring on the outside of secondary lip inside
The third spring of the second spring of mouth, the outside outer pair lip of secondary lip outside setting ring, and second spring, third spring are distinguished
Multi-point sealing knot can be formed between the two when oil seal product is used cooperatively with main shaft positioned at the opposite sides of the second skeleton
Structure, so that the sealing reliability of oil seal product be enable to greatly enhance.
Detailed description of the invention
Fig. 1 is a kind of organigram of combination oil seal structure of the utility model.
Fig. 2 is a kind of operation principle schematic diagram of combination oil seal structure of the utility model.
Component token name claims in figure: 1- baffle, the first spring of 2-, the first seal of 3-, the main lip of 4-, 5- oil drive back thread, 6-
Interior pair lip, 7- second spring, 8- lubricating grease, the outer secondary lip of 9-, the second seal of 10-, 11- third spring, the second bone of 12-
Frame, 13- outer circle, the first skeleton of 14-, 15- main shaft, 16- lubricant medium, 17- cylinder body.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, with reference to the accompanying drawing and specifically
The utility model is described in detail in embodiment.It should be appreciated that specific embodiment described herein is only used to explain this
Utility model is not used to limit the utility model.
Combination oil seal structure as shown in Figure 1 specifically includes baffle 1, the first spring 2, the first seal 3, second spring
7, the second seal 10, third spring 11 and the first skeleton 14 and the second skeleton 12 form master on first seal 3
Lip 4, between first skeleton 14 and the second skeleton 12 by the first seal 3 be fixedly connected it is into a single integrated structure, in master
First spring 2 of the outside setting main lip 4 of ring of lip 4, forms between the baffle 1 and the second skeleton 12 and is tightly connected knot
Structure.Interior secondary lip 6 and outer secondary lip 9 are formed on second seal 10, and pair lip in ring is set on the outside of the interior secondary lip 6
Mouthfuls 6 second spring 7, the third spring 11 of the outer secondary lip 9 of setting ring on the outside of the outer secondary lip 9, the second spring 7,
Third spring 11 is located at the opposite sides of the second skeleton 12, is formed between second seal 10 and the second skeleton 12
Fixed connection structure.
Combinations of the above oil seal product is used cooperatively with main shaft when in use, specifically, as shown in Fig. 2, described second is close
It seals between the mounting hole in the outer circle 13 and cylinder body 17 of body 10 and static sealing structure is formed with interference fit type, it is preferable that can
To form wave structure on the outside of outer circle 13, as shown in Figure 1, to reduce the assembly force of oil sealing and not influence static seal
Effect.Oil seal product is run through in described 15 one end of main shaft, is formed by cavity and fills with oil seal product in main shaft 15, cylinder body 17
Lubricant medium 16, the main lip 4, interior secondary lip 6, outer secondary lip 9 form sealing structure between main shaft 15 respectively, thus
So that Multi-point sealing structure can be formed between oil seal product and main shaft 15, the sealed reliable of oil seal product is effectively enhanced
Property.
As shown in Fig. 2, the main lip 4 can prevent it with sealing lubrication medium 16 when main shaft 15 makes rotating motion
Flow to outside air side;The outer secondary lip 9 can prevent the impurity such as external dust, muddy water from entering near interior secondary lip 6;Institute
The interior secondary lip 6 stated can prevent again or slow down the trash flows such as dust, the muddy water entered from the external world to inner cavity oil side;Described
Oil drive back thread 5 on one seal 3 can make the oil overflowed from oily side be pumped back to oily side again.The speed of lubricant medium 16 therein
Change with liquid level with working condition, not plus before baffle 1, lubricant medium 16 directly impact main lip 4 and its near, easily
Main 4 local vibration of lip is caused to be distorted and cause oil leak.Second skeleton 12 preferably uses T-shaped structure, therein opposite
Between longer sides and baffle 1 formed interlocking sealing structure, relatively short side is between second spring 7 and third spring 11, such as
Shown in Fig. 1, it is arranged after baffle 1 by increasing, so that it may the impact dynamics for weakening lubricant medium 16 significantly, to improve oil sealing
The sealing reliability of product.
In addition, groove can be formed on the second seal 10, and lubricating grease 8 is filled in the groove, such as Fig. 1 institute
Show.When main shaft 15 makes rotating motion, outer secondary lip 9 and interior secondary lip 6 can be made preferably to be lubricated, so as to
Slow down the abrasion of 15 surface of main shaft externally secondary lip 9, interior secondary lip 6 significantly, also, even if outer pair lip 9, interior secondary lip 6 have
It is worn, but due to thering is second spring 7, third spring 11 to provide enclasping force, so that outer pair lip 9, interior secondary lip 6 and main shaft 15
It can fit together again.With certain buffer action when the lubricating grease 8 is molten condition, even if dust, muddy water etc. are miscellaneous
Object enters from outer secondary lip 9, to enter back into interior secondary lip 6 also very slowly.
In the combination oil seal structure of the utility model, the baffle 1 preferably uses cold-rolled steel, for stopping oil liquid straight
Connect impact sealed lip.First seal 3 and the second seal 10 preferably uses high elastic rubber material, close to enhance
Sealing property.First spring 2, second spring 7, third spring 11 preferably use spring winding steel wire, to be respectively its institute
Lip permanent back-off radial force is provided.First skeleton 14, the second skeleton 12 preferably use cold-rolled steel, so that oily
Envelope keeps sufficiently rigid, avoids installing and deforming in.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, and should refer to
Out, any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention etc. should all include
It is within the protection scope of the utility model.
Claims (7)
1. a kind of combination oil seal structure, including the second seal (10) and the second skeleton (12), second seal (10) with
Form a fixed connection structure between second skeleton (12), it is characterised in that: secondary lip in being formed on second seal (10)
The second spring (7) of pair lip (6) in ring, the outer pair is arranged in mouth (6) and outer secondary lip (9), interior secondary lip (6) outside
The third spring (11) of the outer secondary lip (9) of setting ring on the outside of lip (9), the second spring (7), third spring (11) are respectively
Opposite sides positioned at the second skeleton (12).
2. a kind of combination oil seal structure according to claim 1, it is characterised in that: further include the first seal (3) and
One skeleton (14) is formed main lip (4) on first seal (3), first skeleton (14) and the second skeleton (12)
Between by the first seal (3) be fixedly connected it is into a single integrated structure.
3. a kind of combination oil seal structure according to claim 2, it is characterised in that: the outside of the main lip (4) is arranged
The first spring (2) of the main lip of ring (4).
4. a kind of combination oil seal structure according to claim 1-3, it is characterised in that: further include baffle (1), institute
It states and forms Hermetical connecting structure between baffle (1) and the second skeleton (12).
5. a kind of combination oil seal structure according to claim 4, it is characterised in that: second skeleton (12) is T-shaped
Structure forms interlocking sealing structure, second skeleton between the relatively long side and baffle (1) in second skeleton (12)
(12) the relatively short side in is located between second spring (7) and third spring (11).
6. a kind of combination oil seal structure according to claim 1-3, it is characterised in that: second seal
(10) groove is formed on, fills lubricating grease (8) in the groove.
7. a kind of combination oil seal structure according to claim 1-3, it is characterised in that: second seal
(10) wave structure is formed on the outside of outer circle (13).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201820969969.3U CN208431375U (en) | 2018-06-22 | 2018-06-22 | A kind of combination oil seal structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201820969969.3U CN208431375U (en) | 2018-06-22 | 2018-06-22 | A kind of combination oil seal structure |
Publications (1)
Publication Number | Publication Date |
---|---|
CN208431375U true CN208431375U (en) | 2019-01-25 |
Family
ID=65101891
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201820969969.3U Active CN208431375U (en) | 2018-06-22 | 2018-06-22 | A kind of combination oil seal structure |
Country Status (1)
Country | Link |
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CN (1) | CN208431375U (en) |
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2018
- 2018-06-22 CN CN201820969969.3U patent/CN208431375U/en active Active
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