CN109595342A - A kind of rotary oil seal - Google Patents
A kind of rotary oil seal Download PDFInfo
- Publication number
- CN109595342A CN109595342A CN201811393867.2A CN201811393867A CN109595342A CN 109595342 A CN109595342 A CN 109595342A CN 201811393867 A CN201811393867 A CN 201811393867A CN 109595342 A CN109595342 A CN 109595342A
- Authority
- CN
- China
- Prior art keywords
- seal
- retainer
- major diameter
- diameter section
- protrusion
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3208—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip provided with tension elements, e.g. elastic rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/324—Arrangements for lubrication or cooling of the sealing itself
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The invention discloses a kind of rotary oil seals, the rotary oil seal includes seal, retainer, tensioning spring and seal assembly, the centre bore is passed through for rotary shaft, the major diameter section and the path section are integrally formed, and left and right is oppositely arranged, the retainer is set in outside the path section, the annular notch is located at side of the retainer far from the major diameter section, the annular groove is located at the annular notch inner wall, the tensioning spring is loaded in the annular groove, cavity is formed between the major diameter section and the retainer, grease is stored in the cavity, the sealing cover is fixedly connected with the major diameter section, and it is located on the outside of the major diameter section, the left end of the outer ring is to after in-flanges, it is pressed in the outer edge of the sealing cover, the right end of the outer ring is to the outer edge for pushing down the retainer right side after in-flanges, to reality Now seal is effectively prevent to wear, to fail after avoiding seal from wearing, guarantees oil sealing effect.
Description
Technical field
The present invention relates to oil sealing field more particularly to a kind of rotary oil seals.
Background technique
Oil sealing is a kind of sealing element for being sleeved on rotating shaft, and is sealed to lubricating oil, guarantees rotary shaft just
Often operating.Existing oil sealing includes seal and plastic body, and seal lip, the sealing lip are wherein equipped in the centre bore of seal
It is cased with tensioning spring outside mouthful, and seal is externally provided with skeleton and plastic body.Existing oil sealing is fixedly mounted on the oil sealing hole of cabinet
It is interior, and seal and seal lip are fixed, and rotate relative to rotary shaft.
The defect of existing oil sealing is: seal and seal lip are fixed, and rotate relative to rotary shaft, and rotary shaft turns
Seal lip can be worn when dynamic, and impurity meeting unstable wear situation makes lubricating oil from sealing so as to cause seal lip failure
Outside is leaked at lip.
Summary of the invention
The purpose of the present invention is to provide a kind of rotary oil seals, it is intended to which solving existing oil sealing can wear in rotary shaft rotation
The problem of seal lip causes seal lip to fail, and lubricating oil is made to leak into outside from seal lip.
To achieve the above object, the present invention provides a kind of rotary oil seal, the rotary oil seal includes seal, retainer
And seal assembly, the seal have centre bore, major diameter section and path section, the centre bore is passed through for rotary shaft, described big
Diameter section and the path section are integrally formed, and left and right is oppositely arranged, and the retainer is set in outside the path section, and with it is described
Seal is rotatably assorted, and cavity is formed between the major diameter section and the retainer, and grease is stored in the cavity, described close
Sealing assembly is set on the outside of the seal；
The seal assembly includes sealing cover and outer ring, and the sealing cover is fixedly connected with the major diameter section, and is located at institute
It states on the outside of major diameter section, the sealing cover has the first enclosing part and protrusion, first enclosing part and protrusion one
Molding, first enclosing part enclose the major diameter section, and the protruding parts is located on the outside of the seal close to described
Cavity side, the outer ring have U-shaped parcel and the second enclosing part, the U-shaped parcel and second enclosing part one
Molding, the U-shaped parcel wrap up the protrusion, and second enclosing part encloses the retainer, and to pressing after in-flanges
State the outer edge of retainer right side in residence.
Wherein, end face of the major diameter section far from the path section side is ladder-like.
Wherein, the retainer has annular notch, and the annular notch is located at the retainer far from the major diameter section
Side.
Wherein, the retainer also has annular groove, and the annular groove is located at the annular notch inner wall, and is located at described
Retainer is close to the side of the centre bore.
Wherein, the rotary oil seal further includes tensioning spring, and the tensioning spring is located in the annular groove.
Wherein, the rotary oil seal further includes friction pad, and the friction pad is rotatably assorted with the retainer, and is located at institute
It states in annular groove, and is located at close to the side of the centre bore.
Wherein, the rotary oil seal further includes raised component, and the protrusion component has the first annulus protrusion and the second circle
Ring convex rise, and the first annulus protrusion is fixedly connected with the path section, and is located remotely from the side of the major diameter section, and described the
Two annulus protrusions and the first annulus protrusion are integrally formed, and are located at one of the first annulus protrusion far from the path section
Side.
Wherein, the outer diameter of the first annulus protrusion is less than the outer diameter of the second annulus protrusion.
Rotary oil seal of the invention is passed through by the centre bore for rotary shaft, the major diameter section and the path section one
It is body formed, and left and right is oppositely arranged, the retainer is set in outside the path section, and the annular notch is located at the retainer
Side far from the major diameter section, the annular groove are located at the annular notch inner wall, and the tensioning spring is loaded on the annular
In slot, form cavity between the major diameter section and the retainer, be stored with grease in the cavity, the sealing cover with it is described
Major diameter section is fixedly connected, and is located on the outside of the major diameter section, and the left end of the outer ring is pressed in the sealing cover to after in-flanges
Outer edge, the right end of the outer ring are effectively prevent to the outer edge for pushing down the retainer right side after in-flanges to realize
Seal abrasion guarantees oil sealing effect to fail after avoiding seal from wearing.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the front view of rotary oil seal of the present invention；
Fig. 2 is a kind of cross-sectional view A-A of the structural schematic diagram of embodiment of rotary oil seal of the present invention；
Fig. 3 is the partial enlarged view B of Fig. 2；
Fig. 4 is the cross-sectional view A-A of the structural schematic diagram of another embodiment of rotary oil seal of the present invention；
Fig. 5 is the partial enlarged view C of Fig. 4；
In figure: 100- rotary oil seal, 1- seal, 2- retainer, 3- seal assembly, 4- cavity, 5- tension spring, 6- rub
Scrubbing pad, 7- protrusion component, 11- centre bore, 12- major diameter section, 13- path section, 21- annular notch, 22- annular groove, 31- sealing
Lid, the outer ring 32-, the first annulus of 71- protrusion, the second annulus of 72- protrusion, 73- interconnecting piece, the first enclosing part of 311-, 312- protrusion
Portion, the second enclosing part of 321-, 322-U type parcel.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " length ", " width ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to limit of the invention
System.In addition, in the description of the present invention, the meaning of " plurality " is two or more, unless otherwise specifically defined.
Fig. 1-3 is please referred to, the present invention provides a kind of rotary oil seal 100, the rotary oil seal 100 includes seal 1, protects
Frame 2 and seal assembly 3 are held, the seal 1 has centre bore 11, major diameter section 12 and path section 13, and the centre bore 11 is for rotation
Shaft passes through, and the major diameter section 12 is integrally formed with the path section 13, and left and right is oppositely arranged, and the retainer 2 is set in
It outside the path section 13, and is rotatably assorted with the seal 1, forms cavity between the major diameter section 12 and the retainer 2
4, grease is stored in the cavity 4, the seal assembly 3 is set to 1 outside of seal；
The seal assembly 3 includes sealing cover 31 and outer ring 32, and the sealing cover 31 is fixedly connected with the major diameter section 12,
And it is located at 12 outside of major diameter section, the sealing cover 31 has the first enclosing part 311 and protrusion 312, and described first encloses
Portion 311 and the protrusion 312 are integrally formed, and first enclosing part 311 encloses the major diameter section 12, the protrusion 312
Positioned at 1 outside of seal, and it is located at close to 4 side of cavity, the outer ring 32 has U-shaped parcel 322 and second
Enclosing part 321, the U-shaped parcel 322 are integrally formed with second enclosing part 321, and the U-shaped parcel 322 wraps up institute
State protrusion 312, second enclosing part 321 encloses the retainer 2, and to pushing down 2 right end of retainer after in-flanges
The outer edge in face.
In the present embodiment, the seal 1 is made of rubber material, and rubber is that there is reversible deformation to obtain high-elastic polymerization
Object material, can generate larger deformation under the external force of very little, remove resilient after external force, at the same have insulating properties,
The characteristics of impermeable water and air, rotary shaft penetrates the centre bore 11 of the seal 1, and fixes and connect with 1 inner wall of seal
It connects, rubber can protect rotation axis not damaged during rotation, increase the service life of rotation axis mechanical organ.Rotary shaft
Center line be overlapped with the center line of the seal 1, it is eccentric when the seal 1 being avoided to rotate with rotary shaft, influence machinery
Performance.The seal 1 is integrally formed by the major diameter section 12 and the path section 13, and the major diameter section 12 is located at the sealing
The left end of body 1, the path section 13 are located at the right end of the seal 1, and stable structure increases making for the rotary oil seal 100
Use the service life.The retainer 2 is set in outside the path section 13, and is rotatably assorted with the seal 1, and the retainer 2 is
Non-metallic cage 2 has good intensity and sliding property and Elastic Matching such as nylon, phenolic aldehyde adhesive plaster, polytetrafluoroethylene (PTFE)
Degree makes the retainer 2 generate the friction for only generating very little when relative motion with 1 surface of the seal lubricated, this
Sample can be such that the fever of rotary shaft and abrasion is preferably minimized, and under conditions of lubricant lacks, the retainer 2 still has fabulous
Kinetic characteristic, it is ensured that rotary shaft continue to run a period of time without damage.The major diameter section 12 and the holding
Cavity 4 is formed between frame 2, is stored with grease in the cavity 4, the grease can be lubricated the seal 1.It is described close
Sealing assembly 3 includes sealing cover 31 and outer ring 32, and the sealing cover 31 is fixedly connected with the major diameter section 12, and is located at the major diameter
12 outside of section, the sealing cover 31 have the first enclosing part 311 and protrusion 312, first enclosing part 311 and the protrusion
Portion 312 is integrally formed, and first enclosing part 311 encloses the major diameter section 12, and the protrusion 312 is located at the seal 1
Outside, and be located at close to 4 side of cavity, the outer ring 32 has U-shaped parcel 322 and the second enclosing part 321, the U
Type parcel 322 and second enclosing part 321 are integrally formed, and the U-shaped parcel 322 wraps up the protrusion 312, described
Second enclosing part 321 encloses the retainer 2, and to the outer edge for pushing down 2 right side of retainer after in-flanges.It is described close
The connection of capping 31 and the outer ring 32, can not only protect the seal 1 free from the influence of the external environment, but also can prevent the oil
Rouge leaks into outside.The parcel be it is U-shaped, combine the sealing cover 31 and the outer ring 32 closer.The seal 1
The centre bore 11 and chosen axis clearance fit, when the frictional force of rotary shaft is small, the seal 1 is motionless, and to lubrication
The oily and described grease is sealed；When the frictional force of rotary shaft is larger, drives the seal 1 to rotate, prevent from this way
Frictional force between rotation axis and the seal 1 further increases, and avoids the seal 1 from being further worn out, to protect
The seal 1 is also avoided that the rotary oil seal 100 fails in this way.Also, the grease is to the seal 1 of rotation
It is lubricated, prevents the junction excessive wear of the seal 1 and the retainer 2.
Rotary oil seal 100 of the invention is passed through by the centre bore 11 for rotary shaft, the major diameter section 12 with it is described small
Diameter section 13 is integrally formed, and left and right is oppositely arranged, and the retainer 2 is set in outside the path section 13, the annular notch 21
Side positioned at the retainer 2 far from the major diameter section 12, the annular groove 22 is located at 21 inner wall of the annular notch, described
Tensioning spring is loaded in the annular groove 22, formation cavity 4 between the major diameter section 12 and the retainer 2, in the cavity 4
It is stored with grease, the sealing cover 31 is fixedly connected with the major diameter section 12, and is located at 12 outside of major diameter section, the outer ring
32 left end is to after in-flanges, being pressed in the outer edge of the sealing cover 31, and the right end of the outer ring 32 is to pushing down institute after in-flanges
The outer edge for stating 2 right side of retainer effectively prevent seal 1 to wear to realize, to lose after avoiding seal 1 from wearing
Effect guarantees oil sealing effect.
Further, end face of the major diameter section 12 far from 13 side of path section is ladder-like.In present embodiment
In, the ladder-like enclosing for being conducive to first enclosing part 311 to the major diameter section 12, and be conducive to avoid the grease
It is leaked from the cavity 4 through the sealing cover 31.
Further, the retainer 2 has annular notch 21, and it is separate that the annular notch 21 is located at the retainer 2
The side of the major diameter section 12.The retainer 2 also has annular groove 22, and the annular groove 22 is located in the annular notch 21
Wall, and it is located at the retainer 2 close to the side of the centre bore 11.The rotary oil seal 100 further includes tensioning spring, described
Tensioning spring is located in the annular groove 22.In the present embodiment, when rotary shaft high-speed rotation, the retainer 2 will be born
Very big centrifugal force, shock and vibration, there are biggish sliding friction, lubricating oil between the retainer 2 and the seal 1
The retainer 2 can be entered through the annular notch 21, the retainer 2 is entered and is lubricated, friction is reduced.Lubricating oil enters institute
Annular groove 22 is stated, the tension spring 5 is lubricated.The rotary oil seal 100 is firmly stuck in rotation by the tension spring 5
In shaft, reach the more strict effect of sealing.
Further, the rotary oil seal 100 further includes friction pad 6, and the friction pad 6 is matched with the retainer 2 rotation
It closes, and is located in the annular groove 22, and be located at close to the side of the centre bore 11.In the present embodiment, the friction
Pad 6 is made of rub resistance material, and such as nylon, polytetrafluoroethylene (PTFE), the friction pad 6 can effectively prevent the retainer 2 with rotation
With the friction of the path section 13 when axis rotates, increase the service life of the rotary oil seal 100.
Further, rotary oil seal 100 described in other embodiments in the present embodiment further includes raised component 7, institute
Raised component 7 is stated with the first annulus protrusion 71, interconnecting piece 73 and the second annulus protrusion 72, the first annulus protrusion 71 connects
Socket part 73 and second annulus protrusion 72 are integrally formed, and the first annulus protrusion 71 is fixedly connected with the path section 13,
And it is located remotely from the side of the major diameter section 12, the second annulus protrusion 72 is located at the first annulus protrusion 71 far from described in
The side of path section 13, the interconnecting piece 73 are located between the first annulus protrusion 71 and the second annulus protrusion 72.Institute
The outer diameter for stating the first annulus protrusion 71 is less than the outer diameter of the second annulus protrusion 72.Fig. 4-5 is please referred to, first annulus is convex
Rise 71 and the second annulus protrusion 72 lubricating oil and rotary shaft are kept apart in certain distance, and integrated formed structure both guarantees
The stable structure of the raised component 7, and leakproofness is enhanced, reduce in the lubricating oil close to 13 side of path section
A possibility that flowing to rotary shaft.The size of outer diameter by lubricating oil to far from 11 two sides of centre bore the seal 1 at draw
It goes, avoids lubricating oil and gather excessively at rotary shaft, influence mechanical performance, and flow into lubricating oil through the annular notch 21
The annular groove 22 is lubricated the retainer 2 and the tension spring 5, while seal assembly 3 is close to lubricating oil progress
Envelope.
Above disclosed is only a preferred embodiment of the present invention, cannot limit the power of the present invention with this certainly
Sharp range, those skilled in the art can understand all or part of the processes for realizing the above embodiment, and weighs according to the present invention
Benefit requires made equivalent variations, still belongs to the scope covered by the invention.
Claims (8)
1. a kind of rotary oil seal, which is characterized in that
Including seal, retainer and seal assembly, the seal has centre bore, major diameter section and path section, the center
Hole is passed through for rotary shaft, and the major diameter section and the path section are integrally formed, and left and right is oppositely arranged, and the retainer is set in
It outside the path section, and is rotatably assorted with the seal, forms cavity, the sky between the major diameter section and the retainer
Intracavitary to be stored with grease, the seal assembly is set on the outside of the seal；
The seal assembly includes sealing cover and outer ring, and the sealing cover is fixedly connected with the major diameter section, and is located at described big
On the outside of diameter section, the sealing cover has the first enclosing part and protrusion, and first enclosing part and the protrusion are integrally formed,
First enclosing part encloses the major diameter section, and the protruding parts is located on the outside of the seal close to the cavity
Side, the outer ring have U-shaped parcel and the second enclosing part, and the U-shaped parcel and second enclosing part are integrally formed,
The U-shaped parcel wraps up the protrusion, and second enclosing part encloses the retainer, and described to pushing down after in-flanges
The outer edge of retainer right side.
2. rotary oil seal as described in claim 1, which is characterized in that
End face of the major diameter section far from the path section side is ladder-like.
3. rotary oil seal as described in claim 1, which is characterized in that
The retainer has annular notch, and the annular notch is located at side of the retainer far from the major diameter section.
4. rotary oil seal as claimed in claim 3, which is characterized in that
The retainer also has annular groove, and the annular groove is located at the annular notch inner wall, and is located at the retainer and leans on
The side of the nearly centre bore.
5. rotary oil seal as claimed in claim 4, which is characterized in that
The rotary oil seal further includes tensioning spring, and the tensioning spring is located in the annular groove.
6. rotary oil seal as claimed in claim 4, which is characterized in that
The rotary oil seal further includes friction pad, and the friction pad is rotatably assorted with the retainer, and is located at the annular groove
It is interior, and be located at close to the side of the centre bore.
7. rotary oil seal as described in claim 1, which is characterized in that
The rotary oil seal further includes raised component, and the protrusion component has the first annulus protrusion, interconnecting piece and the second annulus
Protrusion, first annulus protrusion, interconnecting piece and the second annulus protrusion are integrally formed, the first annulus protrusion with it is described
Path section is fixedly connected, and is located remotely from the side of the major diameter section, and it is convex that the second annulus protrusion is located at first annulus
The side far from the path section is played, the connecting portion is between the first annulus protrusion and second annulus protrusion.
8. rotary oil seal as claimed in claim 7, which is characterized in that
The outer diameter of the first annulus protrusion is less than the outer diameter of the second annulus protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811393867.2A CN109595342A (en) | 2018-11-21 | 2018-11-21 | A kind of rotary oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811393867.2A CN109595342A (en) | 2018-11-21 | 2018-11-21 | A kind of rotary oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109595342A true CN109595342A (en) | 2019-04-09 |
Family
ID=65958836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811393867.2A Pending CN109595342A (en) | 2018-11-21 | 2018-11-21 | A kind of rotary oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109595342A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728093A (en) * | 2021-01-05 | 2021-04-30 | 益航电子股份有限公司 | Rotary machine |
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| CN112728093A (en) * | 2021-01-05 | 2021-04-30 | 益航电子股份有限公司 | Rotary machine |
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| PB01 | Publication | ||
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Application publication date: 20190409 |