CN103742651B - A kind of low friction reciprocating movement sealing part - Google Patents
A kind of low friction reciprocating movement sealing part Download PDFInfo
- Publication number
- CN103742651B CN103742651B CN201410042652.1A CN201410042652A CN103742651B CN 103742651 B CN103742651 B CN 103742651B CN 201410042652 A CN201410042652 A CN 201410042652A CN 103742651 B CN103742651 B CN 103742651B
- Authority
- CN
- China
- Prior art keywords
- sealing
- annulus
- fomale
- male
- sealing lip
- 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.)
- Active
Links
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The present invention relates to sealing member technical field, specifically disclose a kind of low friction reciprocating movement sealing part, it includes annular brace skeleton and cyclic spring seal, described cyclic spring seal includes at least one sealing lip, it is characterized in that, being provided with male and fomale(M&F) annulus on the annular sealing surface that described sealing lip is formed, described male and fomale(M&F) annulus is provided with multiple projection or pit.Described sealing lip includes the first sealing lip and the second sealing lip, is respectively equipped with the first male and fomale(M&F) annulus and the second male and fomale(M&F) annulus on the annular sealing surface that described first sealing lip and the second sealing lip are formed.Described projection or pit be shaped as hemispherical, the four directions bodily form, truncated cone-shaped or many prismatic table shape.The invention has the beneficial effects as follows, while ensureing that seal radially has enough seal pressures, reduce the frictional force between seal and axle, thus reduce the kinetic friction force of reciprocator, while ensureing to seal, extend the service life of seal and kinematic axis.
Description
Technical field
The present invention relates to a kind of sealing member, particularly relate to a kind of low friction reciprocating movement sealing part.
Background technology
Reciprocating hydraulic structure is parts conventional in modern vehicle, engineering machinery, reciprocating
The service life of reciprocating hydraulic structure is affected to closing weight by shaft seal lip configuration and wearability
Want.And the sealability of sealing member, depend on the thickness of sealing surface oil film, oil film between sealing lip and axle
Thickness is excessive, and sealing member is susceptible to leakage；Thickness is too small, it may occur however that dry friction, causes sealing member
Wear and tear with axle.As automobile amortisseur in use, often because sealing member frictional force is big, lead
Cause reciprocating hydraulic structure and the problems such as leakage of oil, abnormal sound, poor durability occur.But sealing member is wanted simultaneously
Realizing reciprocating hydraulic structure inner sealing medium, the sealing of gases at high pressure, it is right to possess again
Axle keeps enough radial forces.Therefore, when sealing member designs, first have to meet the radial direction required by sealing
Power, according to frictional force equal to radial force and the theory amassed of coefficient of friction, when radial force design load is bigger,
Under conditions of friction coefficient holding is constant, big axial friction will necessarily be produced, at axial rub
Under the state that power is bigger, between sealing member and reciprocating hydraulic structure, easily produce dry grinding, abnormal sound even
Cause reciprocating hydraulic structure to lose efficacy, affect the service life of the movable body such as automobile, engineering machinery.
Therefore, how to solve both to have ensured suitable radial sealing force, seal and reciprocating motion can be reduced again as far as possible
Hydraulic structure between axial friction just become a contradiction.Patent No. 201320268503, name
It is referred to as the patent of invention of a kind of low friction damper, by arranging axial parallel on the sealing surface of sealing member
Stricture of vagina is to reduce the contact area between sealing surface and damper shaft, thus reduces frictional force between the two,
It compares plain shaft sealing member the biggest improvement, but there is also following deficiency: one is simple
Axial parallel stricture of vagina structure is under different applying working conditions, and particularly sealed medium is in the upper end of sealing member, main
Under seal lip applying working condition upward, it is possible to cause the lubricant within axial parallel stricture of vagina to be heated generation
Bad sealing drain；Two is owing to forming axial oil storage groove between axial parallel stricture of vagina, although be conducive to
Between sealing surface and damper shaft, form critical lubricating oil film, but these axial grooves also can promote lubrication
Oil runs off along with axially reciprocating, thus causes sealing member relatively early dry grinding, lost efficacy.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, it is provided that a kind of low friction reciprocating movement sealing part.Its
The axle between seal and reciprocating hydraulic structure can be reduced while ensureing radial seal pressure
To frictional force, thus extend the service life of seal.
The technical scheme is that a kind of low friction reciprocating movement sealing
Part, including annular brace skeleton and cyclic spring seal, described cyclic spring seal includes at least one
Individual sealing lip, it is characterised in that be provided with male and fomale(M&F) annulus on the annular sealing surface that described sealing lip is formed,
Described male and fomale(M&F) annulus is provided with multiple projection or pit.
The invention has the beneficial effects as follows: one is owing to being provided with on the annular sealing surface that described sealing lip is formed
Male and fomale(M&F) annulus, not only reduces the contact area between sealing surface and reciprocating hydraulic structure, and
And be conducive between sealing surface and reciprocating hydraulic structure, form critical lubricating oil film；Two is recessed
Lubricating oil be can preferably store between projection or the pit of convex surface annulus, sealing lip and reciprocating motion reduced
Hydraulic structure between coefficient of friction, keep sealing member to reciprocating hydraulic structure radial force not
On the premise of change, reach to reduce the purpose of frictional force between sealing member and reciprocating hydraulic structure；
Three be due on male and fomale(M&F) annulus by protruding or pit formation vertical-horizontal slot, make lubricating oil at these grooves
Middle storage also can obtain labyrinth sealing effect, is also beneficial to the long-term preservation of lubricating oil film, thus improves
Service life of sealing member；Four be single projection or bowl configurations in reciprocating motion, have more soft
Toughness and trackability.Axial friction can be reduced 10%-37% compared with ordinary seals by the present invention；With
The simple sealing member using axial parallel stricture of vagina is compared, and axial friction can also reduce 5%-25%, extends and seals
Part service life is at 5%-17%.
Hydraulic structure described here can be hydraulic cylinder and piston structure, and the sealing member sheathing of the present invention exists
On reciprocating piston or axle.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described sealing lip includes the first sealing lip and the second sealing lip, at described first sealing lip
And second be respectively equipped with the first male and fomale(M&F) annulus and second concavo-convex on the annular sealing surface that formed of sealing lip
Face annulus.
Use above-mentioned further scheme to provide the benefit that, can arrange many according to the seal of different structure
Road male and fomale(M&F) annulus, to reach better seal effect.
Further, described cyclic spring seal also includes dust excluder lips, in the annular that described dust excluder lips is formed
The 3rd male and fomale(M&F) annulus it is additionally provided with on sealing surface.
Use above-mentioned further scheme to provide the benefit that, based on above-mentioned same reason, arrange the 3rd recessed
Convex surface annulus can reduce sealing member axial friction while effectively deadening dust.
Further, described projection be shaped as hemispherical, the four directions bodily form, truncated cone-shaped or many prismatic table shape.
Further, described pit be shaped as hemispherical, the four directions bodily form, truncated cone-shaped or many prismatic table shape.
Using above-mentioned further scheme to provide the benefit that, projection or the pit of employing different structure can be more
Good adapts to different operating modes to reduce axial friction on the premise of ensureing sealing property: by adjusting
Spacing between the shape of concave, convex structure, density and projection or pit, can adjust the close of sealing member
Sealing property or the adaptation pressure to different sealed mediums.
Further, described projection or pit are uniformly distributed or random distribution on described annular sealing surface.
Use above-mentioned further scheme to provide the benefit that, be uniformly distributed or random distribution can select to adopt
With, more can there is labyrinth type oil storage groove in random distribution, so that the service life of sealing member is longer.
Further, the material of described cyclic spring seal is polyurethane or rubber.
Further, described rubber is nitrile rubber, hydrogenated nitrile-butadiene rubber or fluorubber.
Above-mentioned further scheme is used to provide the benefit that, according to purposes, it is desirable to cost is different, can be selected for
Suitably encapsulant.
Further, the height of described projection or the degree of depth of pit are 0.02--0.3 millimeter.
Above-mentioned further scheme is used to provide the benefit that, can be according to the diameter of sealing member, sealing
The thickness of part, require that oil film thickness and other working condition requirement select the height of described projection or the deep of pit
Degree.
Further, the described sealing surface between described adjacent protrusion or adjacent pit is plane, lower arcs of recesses
Or protrusion arc.
Above-mentioned further scheme is used to provide the benefit that, between described adjacent protrusion or adjacent pit
Described sealing surface is lower arcs of recesses or protrusion arc, advantageously forms the concavo-convex aspect of different levels, is allowed to
Preferably can form critical lubricating oil film between the protruding of sealing surface and reciprocating hydraulic structure, from
And improve the life-span of sealing member.
Accompanying drawing explanation
Fig. 1 is embodiments of the invention 1 structural representations；
Fig. 2 is embodiments of the invention 2 structural representations；
Fig. 3 is embodiments of the invention 3 structural representations；
Fig. 4 is embodiments of the invention 3 structural representations；
Fig. 5 is the male and fomale(M&F) annulus part sectioned view radially (spheroidal is protruding) of the present invention；
Fig. 6 is the part sectioned view (many prismatic table shape are protruding) radially of the male and fomale(M&F) annulus in Fig. 1；
Fig. 7 is the part sectioned view (projection of random distribution) radially of the male and fomale(M&F) annulus in Fig. 2
Fig. 8 is the part sectioned view (being formed annulus by pit) radially of the male and fomale(M&F) annulus in Fig. 3；
Fig. 9 is that the A-A of Fig. 4 is to profile (the four directions bodily form is protruding).
In Fig. 1～Fig. 9,1, annular brace skeleton；2, cyclic spring seal；3, dust excluder lips；
4, the 3rd male and fomale(M&F) annulus；5, the second male and fomale(M&F) annulus；6, the first male and fomale(M&F) annulus；7, second is close
Envelope lip；8, the first sealing lip；9, garter springs；10, protruding；11, pit.
Detailed description of the invention
Being described principle and the feature of the present invention below in conjunction with accompanying drawing, example is served only for explaining this
Invention, is not intended to limit the scope of the present invention.
As shown in Fig. 1 to Fig. 5, a kind of low friction reciprocating movement sealing part, including annular brace skeleton 1
And cyclic spring seal 2, described cyclic spring seal 2 includes at least one sealing lip, described
The annular sealing surface that sealing lip is formed is provided with male and fomale(M&F) annulus, and described male and fomale(M&F) annulus is provided with multiple convex
Play 10 or pit 11
Described cyclic spring seal 2 is additionally provided with garter springs 9.
Described sealing lip includes the first sealing lip 8 and the second sealing lip 7, at described first sealing lip 8 and
The first male and fomale(M&F) annulus 6 and the second male and fomale(M&F) it is respectively equipped with on the annular sealing surface that two sealing lips 7 are formed
Annulus 5.
Described cyclic spring seal 2 also includes dust excluder lips 3, in the ring packing that described dust excluder lips 3 is formed
The 3rd male and fomale(M&F) annulus 4 it is additionally provided with on face.
Described protruding 10 be shaped as hemispherical, the four directions bodily form, truncated cone-shaped or many prismatic table shape.
Described pit 11 be shaped as hemispherical, the four directions bodily form, truncated cone-shaped or many prismatic table shape.
Described protruding 10 or pit 11 be uniformly distributed on described annular sealing surface or random distribution.
The material of described cyclic spring seal 2 is polyurethane or rubber.
Described rubber is nitrile rubber, hydrogenated nitrile-butadiene rubber or fluorubber.
The degree of depth of the described height of protruding 10 or pit is 0.02 0.3 millimeters.
Described sealing surface between described adjacent protrusion 10 or adjacent pit 11 be plane, lower arcs of recesses or
Protrusion arc.
Hereinafter several specific embodiment is listed the most respectively, further the structure of the present invention to be illustrated:
Embodiment 1
As shown in figures 1 to 6, a kind of low friction reciprocating movement sealing part, including annular brace skeleton 1
And cyclic spring seal 22, described cyclic spring seal 2 includes at least one sealing lip, described
The annular sealing surface that sealing lip is formed is provided with male and fomale(M&F) annulus, and described male and fomale(M&F) annulus is provided with multiple convex
Play 10.
Described protruding 10 be shaped as many prismatic table shape.
The described height of protruding 10 is 0.02 millimeter.
Remaining structure is not as it has been described above, repeating.
Embodiment 2
As shown in Figure 2 and Figure 7, a kind of low friction reciprocating movement sealing part, including annular brace skeleton 1
And cyclic spring seal 2, described cyclic spring seal 2 includes at least one sealing lip, described
The annular sealing surface that sealing lip is formed is provided with male and fomale(M&F) annulus, and described male and fomale(M&F) annulus is provided with multiple convex
Play 10.
Described protruding 10 random distributions on described annular sealing surface.
The described height of protruding 10 is 0.10 millimeter.
Remaining structure is not as it has been described above, repeating.
Embodiment 3
As shown in figures 3 and 8, a kind of low friction reciprocating movement sealing part, including annular brace skeleton 1
And cyclic spring seal 2, described cyclic spring seal 2 includes at least one sealing lip, described
The annular sealing surface that sealing lip is formed is provided with male and fomale(M&F) annulus, and described male and fomale(M&F) annulus is provided with multiple recessed
Hole 11.
Described pit 11 be shaped as many prismatic table shape.
The degree of depth of described pit is 0.3 millimeter.
Remaining structure is not as it has been described above, repeating.
Embodiment 4
As shown in figures 4 and 9, a kind of low friction reciprocating movement sealing part, including annular brace skeleton 1
And cyclic spring seal 2, described cyclic spring seal 2 includes at least one sealing lip, described
The annular sealing surface that sealing lip is formed is provided with male and fomale(M&F) annulus, and described male and fomale(M&F) annulus is provided with multiple convex
Play 10.
Described protruding 10 be shaped as four directions the bodily form.When using four directions bodily form projection, close in described annular
Latticed lubricating oil storage channel can be formed on front cover.
The described height of protruding 10 is 0.20 millimeter.
Remaining structure is not as it has been described above, repeating.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all in the present invention
Spirit and principle within, any modification, equivalent substitution and improvement etc. made, should be included in this
Within bright protection domain.
Claims (9)
1. a low friction reciprocating movement sealing part, including annular brace skeleton and cyclic spring seal,
Described cyclic spring seal includes at least one sealing lip, it is characterised in that formed at described sealing lip
Annular sealing surface be provided with male and fomale(M&F) annulus, described male and fomale(M&F) annulus is provided with multiple projection or pit；
Sealing surface between described adjacent protrusion or adjacent pit is plane, lower arcs of recesses or protrusion arc.
Low friction reciprocating movement sealing part the most according to claim 1, it is characterised in that described
Sealing lip includes the first sealing lip and the second sealing lip, in the ring packing that described first sealing lip is formed
Face is provided with the first male and fomale(M&F) annulus, is provided with on the annular sealing surface that described second sealing lip is formed
Two male and fomale(M&F) annulus.
Low friction reciprocating movement sealing part the most according to claim 1 and 2, it is characterised in that
Described cyclic spring seal also includes dust excluder lips, also sets on the annular sealing surface that described dust excluder lips is formed
There is the 3rd male and fomale(M&F) annulus.
Low friction reciprocating movement sealing part the most according to claim 1 and 2, it is characterised in that
Described projection be shaped as hemispherical, the four directions bodily form, truncated cone-shaped or many prismatic table shape.
Low friction reciprocating movement sealing part the most according to claim 1 and 2, it is characterised in that
Described pit be shaped as hemispherical, the four directions bodily form, truncated cone-shaped or many prismatic table shape.
Low friction reciprocating movement sealing part the most according to claim 1 and 2, it is characterised in that
Described projection or pit are uniformly distributed or random distribution on described annular sealing surface.
Low friction reciprocating movement sealing part the most according to claim 1 and 2, it is characterised in that
The material of described cyclic spring seal is polyurethane or rubber.
Low friction reciprocating movement sealing part the most according to claim 7, it is characterised in that described
Rubber is nitrile rubber, hydrogenated nitrile-butadiene rubber or fluorubber.
Low friction reciprocating movement sealing part the most according to claim 1 and 2, it is characterised in that
The height of described projection or the degree of depth of pit are 0.02--0.3 millimeter.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410042652.1A CN103742651B (en) | 2014-01-29 | 2014-01-29 | A kind of low friction reciprocating movement sealing part |
| PCT/CN2014/075952 WO2014183542A1 (en) | 2013-05-16 | 2014-04-22 | Reciprocating motion seal component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410042652.1A CN103742651B (en) | 2014-01-29 | 2014-01-29 | A kind of low friction reciprocating movement sealing part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103742651A CN103742651A (en) | 2014-04-23 |
| CN103742651B true CN103742651B (en) | 2016-11-16 |
Family
ID=50499701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410042652.1A Active CN103742651B (en) | 2013-05-16 | 2014-01-29 | A kind of low friction reciprocating movement sealing part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103742651B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358599A (en) * | 2014-11-18 | 2015-02-18 | 烟台润蚨祥油封有限公司 | Low-friction air valve oil seal |
| US10100931B2 (en) * | 2016-07-29 | 2018-10-16 | Aktiebolaget Skf | Sealing lip for a low friction bonded piston seal |
| WO2020013020A1 (en) * | 2018-07-09 | 2020-01-16 | Nok株式会社 | Sealing device |
| KR102510739B1 (en) * | 2018-08-29 | 2023-03-15 | 히다치 아스테모 가부시키가이샤 | buffer |
| CN108869554A (en) * | 2018-08-31 | 2018-11-23 | 无锡三立轴承股份有限公司 | Bearing seal |
| CN110805738B (en) * | 2019-10-25 | 2024-06-11 | 托伦斯半导体设备启东有限公司 | Sealing structure of vacuum plugboard switch valve |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3742080C2 (en) * | 1987-12-11 | 1994-07-07 | Blohm Voss Ag | Shaft seal for sealing a liquid medium |
| JP2003056718A (en) * | 2001-08-22 | 2003-02-26 | Koyo Seiko Co Ltd | Oil seal |
| JP2004138091A (en) * | 2002-10-15 | 2004-05-13 | Nok Corp | Reciprocating seal |
| CN2599328Y (en) * | 2003-03-05 | 2004-01-14 | 青岛基珀密封工业有限公司 | Oil seal |
| JP2012072822A (en) * | 2010-09-28 | 2012-04-12 | Nok Corp | Sealing device |
| CN103244686B (en) * | 2013-05-16 | 2016-04-20 | 烟台润蚨祥油封有限公司 | A kind of low friction damper oil sealing |
| JP3185997U (en) * | 2013-07-02 | 2013-09-12 | Ｎｏｋ株式会社 | Sealing device |
-
2014
- 2014-01-29 CN CN201410042652.1A patent/CN103742651B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103742651A (en) | 2014-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103742651B (en) | A kind of low friction reciprocating movement sealing part | |
| CN103244686B (en) | A kind of low friction damper oil sealing | |
| CN201373105Y (en) | Metal spring enforced sealing element | |
| CN203868336U (en) | Low-friction reciprocating motion sealing member | |
| JP2010190300A (en) | Rotary shaft seal | |
| CN104358880A (en) | Rotary motion oil seal | |
| CN106838096B (en) | Hydro-pneumatic spring self-lubricating compensates floating piston | |
| CN203286123U (en) | Valve rod sealing ring with metal spring | |
| CN109695716A (en) | Piston and hydraulic cylinder | |
| CN204493719U (en) | The efficient shaft seal structure of helical-lobe compressor | |
| CN206785979U (en) | A kind of sealing structure of reduction box | |
| CN110259949A (en) | Sealing device | |
| CN204284452U (en) | A kind of rotary motion oil sealing | |
| CN204852344U (en) | Coaxial -type combined seal ring for piston rod | |
| CN204755916U (en) | Exoskeletal rubber oil seal of lips mouth J type | |
| CN106801717A (en) | Hydro-pneumatic spring main piston | |
| CN209800550U (en) | Annular double-labyrinth multi-lip spring energy storage sealing device for wind power main bearing | |
| CN201521650U (en) | Two-way movement combined type piston sealing piece | |
| CN202381618U (en) | Oil seal of vibration damper | |
| CN218118594U (en) | Low-friction bidirectional cambered surface U-shaped slip ring type combined seal | |
| CN201265653Y (en) | Three-in-one oil seal | |
| JP3189259U (en) | Oil seal | |
| CN206072131U (en) | New deep groove ball bearing contact type sealing structure | |
| CN204254012U (en) | Valve tool sealing configuration | |
| CN204253122U (en) | A kind of low friction valve oil seal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A low friction reciprocating movement seal Effective date of registration: 20230315 Granted publication date: 20161116 Pledgee: China Construction Bank Corporation Laiyang Sub branch Pledgor: YANTAI RUNFUXIANG OIL SEAL Co.,Ltd. Registration number: Y2023980034910 |