WO2006033202A1 - 密封装置 - Google Patents
密封装置 Download PDFInfo
- Publication number
- WO2006033202A1 WO2006033202A1 PCT/JP2005/014170 JP2005014170W WO2006033202A1 WO 2006033202 A1 WO2006033202 A1 WO 2006033202A1 JP 2005014170 W JP2005014170 W JP 2005014170W WO 2006033202 A1 WO2006033202 A1 WO 2006033202A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- seal lip
- sealing device
- sliding surface
- lip
- main seal
- Prior art date
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
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/36—Special sealings, including sealings or guides for piston-rods
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
- F16C33/7823—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region of sealing lips
-
- 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
- F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
- F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
- F16C2240/54—Surface roughness
Definitions
- the present invention relates to a sealing device, and more particularly to a sealing device in which a main seal lip used in a shock absorber is a one-stage seal lip structure.
- shock absorbers use a two-stage lip structure main seal lip and an oil seal that also has a dust seal lip force.
- the second seal lip of the main seal lip has a matte finish, threaded, and parallel Patent Document 1 below proposes to improve the friction characteristics by providing protrusions. This is an improvement in the friction characteristics by providing a space where the oil film intervenes by providing an uneven portion on the sliding surface of the second-stage seal lip, but when the main seal lip has a one-stage seal lip structure. When applied, there was a concern that the sealing characteristics would deteriorate, and it was difficult to apply as it was.
- the main seal lip has a two-stage seal lip structure in Patent Document 2 as well.
- the main seal lip has a single-stage seal lip structure without deteriorating the sealing characteristics, there was no force described.
- Patent Document 1 Japanese Patent Laid-Open No. 2001-355740
- Patent Document 2 Japanese Patent Application Laid-Open No. 2004-138091
- the present invention provides a sealing device in which a main seal lip used in a shock absorber is a sealing device having a one-stage seal lip structure with improved sealing characteristics while ensuring sealing characteristics.
- An object is to provide an apparatus.
- a sealing device is a main seal lip force used in a shock absorber.
- the moving surface is roughened at a position spaced apart from the lip edge by a predetermined distance, and a Karoe portion is formed.
- a sealing device is the sealing device according to claim 1 described above, and is a sliding surface of the main seal lip at a position separated from the lip edge by a predetermined distance. It is characterized in that the roughened portion of the sliding surface is formed by providing a plurality of protrusions extending in the axial direction.
- the sealing device according to claim 3 is the sealing device according to claim 1, wherein the sealing device according to claim 1 extends in the axial direction to a position that is a sliding surface of the main seal lip and is separated from the lip edge by a predetermined distance.
- the roughened portion of the sliding surface is formed by providing a plurality of boat bottom screws.
- the sealing device according to claim 4 is the sealing device according to claim 1 described above, wherein the grid-like projections are formed at a position spaced apart from the lip edge by a predetermined distance on the sliding surface of the main seal lip. By providing, the roughened portion of the sliding surface is formed.
- the present invention has the following effects.
- the sealing device according to claim 1 having the above-described configuration exhibits a friction characteristic by interposing an oil film on the sliding surface due to the unevenness of the roughened portion formed on the sliding surface of the main seal lip. It can be improved. Neither the squeezing force nor the roughened part is formed with a lip edge force on the sliding surface at a predetermined distance, and a plain part is formed between them, so that the sealing target is sealed by the plain part to ensure the sealing characteristics can do.
- the main seal lip has a single-stage seal lip structure, which achieves both the characteristics that improve the friction characteristics while ensuring the sealing characteristics. An improved sealing device can be provided.
- the main seal lip has a single-stage seal lip structure
- the conventional two-way structure such as a reduction in friction due to a small contact width, a reduction in space due to a small cross-section of the seal lip, and an improvement in wear resistance, etc.
- the advantageous effect compared with the step seal lip structure can be maintained as it is.
- the roughened portion is a plurality of projections extending in the axial direction, boat bottom screws, or grid-like projections.
- the surface becomes more uniform than roughing, and the amount of oil film on the sliding surface is kept constant.
- 'Gender can be stabilized.
- FIG. 1 is a partial cross-sectional view of a sealing device according to a first embodiment of the present invention.
- FIG. 2 is a comparative graph of friction force between the first embodiment of the present invention and a comparative example.
- FIG. 3 is a comparison graph of the leakage amount between the first embodiment of the present invention and a comparative example.
- FIG. 4 is a partial sectional view of a sealing device according to a second embodiment of the present invention.
- FIG. 6 is a comparative graph of friction force between the second embodiment of the present invention and a comparative example.
- FIG. 7 is a comparative graph of the leakage amount between the second embodiment of the present invention and a comparative example.
- FIG. 8 is a partial cross-sectional view of a sealing device according to a third embodiment of the present invention.
- FIG. 9 is a partial cross-sectional view of a sealing device according to a fourth embodiment of the present invention.
- FIG. 1 shows a cross section of the main part of a sealing device 1 according to the first embodiment of the present invention, which is configured as follows.
- the sealing device 1 includes a metal ring 2 having a cylindrical cross section and a seal body 3 made of a rubber-like elastic body that is vulcanized and bonded to the metal ring 2.
- the seal body 3 is positioned on the outer peripheral side of the metal ring 2 on the side to be sealed (inner side) and fixedly attached to the housing (not shown) 4, and on the inner periphery side of the metal ring 2 and on the shaft (not shown).
- the seal part 5 that slides closely is bonded to the metal ring 2 by vulcanization.
- the seal portion 5 is located on the inner side of the metal ring 2 and extends toward the inner side, and has a function of mainly sealing the oil of the inner fluid.
- the main seal lip 6 has a rulip structure, and the dust seal lip 7 is located on the outer side of the metal ring 2 and extends toward the outer side. 7 has a two-stage seal lip structure that also has a force with the first seal lip 71 and the second seal lip 72 on the inner side.
- a roughened portion 63 is formed on the sliding surface 61 of the main seal lip 6 at a position spaced apart from the lip edge 62 by a predetermined distance.
- the roughening force portion 63 is subjected to a pear finish to provide an uneven portion on the surface. Therefore, the predetermined distance from the lip edge 62 to the roughening force feeding portion 63 is formed with a plane portion 64 having no uneven portion on the surface.
- the roughness of the surface by the satin finish is preferably 0.5 to 500 m, and more preferably 5 to 40 / ⁇ ⁇ . .
- the roughening force feeding portion 63 is preferably formed from a position spaced from the lip edge 62 by 0.2 to Lmm.
- the sealing device 1 according to the first embodiment having the above-described configuration When the sealing device 1 according to the first embodiment having the above-described configuration is mounted, the roughened portion 63 formed on the sliding surface 61 of the main seal lip 6 slides with the shaft that is the counterpart member. It is possible to improve the friction characteristics by interposing an oil film on the moving surface 61.
- FIG. 2 shows the experimental results of the friction characteristics.
- Figure 2 shows the first embodiment of Example 1, and when the surface is roughened and the processed surface is roughened (Comparative Example 1), the entire sliding surface is processed without forming the plain portion. This is a comparative data of frictional force for the case (Comparative Example 2). From this result, it is recognized that the friction force is improved in Example 1 as compared with the case where the roughened portion is not formed (Comparative Example 1).
- the force force roughening portion 63 is not formed up to a position separated from the lip edge 62 by a predetermined distance, and the plain portion 64 formed therebetween slides with the shaft to seal it. It is possible to seal the target oil and ensure the sealing characteristics.
- FIG. 3 shows the experimental results regarding the leakage amount.
- Figure 3 shows the same finish as Example 1, but when the surface was roughed and formed with a roughened part (Comparative Example 1), the entire sliding surface was processed without forming a plain part.
- This is the comparison data of the leakage amount conducted for the case of (Comparative Example 2). From these results, the leakage amount of Example 1 was significantly reduced compared to the case where the entire surface of the sliding surface was processed (Comparative Example 2), and the roughened portion was formed (comparative). Example Even when compared with 1), it is recognized that the increase in leakage is small.
- Example 1 the frictional force characteristic can be improved while ensuring the sealing characteristic, and both characteristics can be achieved at the same time.
- the contact width of the main seal lip located on the side to be sealed (inner side) is about 0.5 to 1. Ot with respect to the axial thickness t of the metal ring, so that the rigidity of the lip is increased. The pressure resistance is improved. It is possible to improve the frictional force stability (frictional force characteristics) by lowering the friction of the main seal lip having such a shape and stabilizing the amount of oil film during sliding.
- the unevenness formed in the roughened portion is intended to form an oil film, and therefore, if it is within the range of its purpose, such as a screw case other than a satin force force, a parallel protrusion, etc. Any shape is acceptable.
- FIG. 4 is a cross-sectional view of the main part of the sealing device 1 according to the second embodiment of the present invention
- FIG. 5 is an image for explaining the shape of the protrusion provided on the sliding surface of the main seal lip in FIG.
- the cross section is shown, and different parts from the first embodiment will be described below.
- a plurality of projections 65 extending in the axial direction are provided on the sliding surface 61 of the main seal lip 6 at a predetermined distance from the lip edge 62 over the entire circumference at equal intervals. It is. That is, the roughened portion 63 formed on the sliding surface 61 is provided with a protrusion 65 that is parallel to the axial direction. Therefore, the uneven portion is provided on the surface for a predetermined distance from the lip edge 62 to the protrusion 65, and the plane portion 64 is formed.
- the position where the protrusion 65 is formed is preferably formed from a position spaced by 0.2 to 1 mm from the lip edge 62.
- a positional force separated by 3 to 0.7 mm should also be formed. That is, the distance from the lip edge 62 on which the plane portion 64 is formed is preferably 0.2 to 1 mm, and more preferably, the distance from the lip edge 62 is 0.3 to 0.7 mm. It is good to be formed from the position.
- the cross-sectional shape of the protrusion 65 is preferably triangular, and the apex angle a of the protrusion at that time is preferably 60 to 120 °.
- the dimension and shape of the protrusion is 2 ⁇ 500 / ⁇ ⁇ , and the distance between protrusions (distance between the vertices of protrusions) L is preferably 0.005 ⁇ 1.Omm.
- the length H is 5 to: LOO / zm
- the distance L between the protrusions is preferably 0.01-0.2 mm.
- the protrusion 65 provided on the roughening force portion 63 of the sliding surface 61 of the main seal lip 6 slides with the shaft. It is possible to improve the friction characteristics by interposing an oil film on the sliding surface 61. In particular, since the protrusion 65 can be provided uniformly on the roughened portion 63, the amount of oil film interposed on the sliding surface 61 can be made uniform and the friction characteristics can be stabilized.
- the protrusion 65 is not formed up to a position spaced apart from the lip edge 62 by a predetermined distance, and the plain portion 64 formed therebetween slides with the shaft, so that it is a sealing target. It becomes possible to seal the oil and ensure the sealing characteristics.
- Example 2 That is, also in Example 2, it is possible to improve the frictional force characteristic while ensuring the sealing characteristic, and to achieve both characteristics.
- the contact width of the main seal lip located on the side to be sealed is about 0.5 to 1. Ot with respect to the axial thickness t of the metal ring, so that the rigidity of the lip is increased. The pressure resistance is improved. It is possible to improve the frictional force stability (frictional force characteristics) by lowering the friction of the main seal lip having such a shape and stabilizing the amount of oil film during sliding.
- FIG. 8 shows a cross-section of the main part of the sealing device 1 according to the third embodiment of the present invention, and parts different from the first and second embodiments will be described below.
- a plurality of boat bottom screws 67 extending in the axial direction on the sliding surface 61 of the main seal lip 6 at a predetermined distance from the lip edge 62 are provided at equal intervals over the entire circumference. It is installed. That is, a plurality of boat bottom screws 67 parallel to the axial direction are provided in the roughened portion 63 formed on the sliding surface 61. Therefore, a plane portion 64 having no uneven portion on the surface is formed for a predetermined distance from the lip edge 62 to the boat bottom screw 67.
- the boat bottom screw 67 is not formed up to a position separated from the lip edge 62 by a predetermined distance, and the plain portion 64 formed therebetween slides with the mating member to seal it. It is possible to seal the target oil and ensure the sealing characteristics.
- FIG. 9 shows a cross-section of the main part of the sealing device 1 according to the fourth embodiment of the present invention, and parts different from the first to third embodiments will be described below.
- grid-like projections 68 are provided on the sliding surface 61 of the main seal lip 6 at a predetermined distance from the lip edge 62 over the entire circumference at equal intervals. sand In other words, a grid-like protrusion 68 is provided on the roughening portion 63 formed on the sliding surface 61. Therefore, a plane portion 64 having no uneven portion on the surface is formed for a predetermined distance from the lip edge 62 to the lattice-like protrusion 68.
- the lattice-shaped protrusion 68 may have a lattice shape orthogonal to the axial direction as shown in FIGS. 9 (1) and (2). A lattice shape having a predetermined angle with respect to the direction may be used. Further, the size of the lattice forming the lattice-shaped protrusion is not particularly limited as shown in FIGS. 9 (1) and 9 (2), but is appropriately determined depending on the amount of oil film interposed on the sliding surface.
- the sealing device 1 according to the fourth embodiment having the above-described configuration When the sealing device 1 according to the fourth embodiment having the above-described configuration is mounted, the grid-like projections 68 provided on the roughened portion 63 of the sliding surface 61 of the main seal lip 6 slide with the mating member. It is possible to improve the friction characteristics by interposing an oil film on the sliding surface 61. In particular, since the grid-like projections 68 can be provided uniformly on the roughening force feeding portion 63, the amount of oil film interposed on the sliding surface 61 can be made uniform and the frictional characteristics can be stabilized. .
- the grid-like protrusion 68 is not formed up to a position spaced apart from the lip edge 62 by a predetermined distance, and the plain part 64 formed therebetween slides with the mating member, so It becomes possible to seal a certain oil and ensure the sealing characteristics.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
- Fluid-Damping Devices (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/661,571 US20070241515A1 (en) | 2004-09-24 | 2005-08-03 | Sealing Device |
EP05768487A EP1793146A1 (en) | 2004-09-24 | 2005-08-03 | Sealing device |
US12/171,620 US20080272558A1 (en) | 2004-09-24 | 2008-07-11 | Sealing device |
US12/171,584 US20080272556A1 (en) | 2004-09-24 | 2008-07-11 | Sealing device |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004276258 | 2004-09-24 | ||
JP2004-276258 | 2004-09-24 | ||
JP2005-026456 | 2005-02-02 | ||
JP2005026456 | 2005-02-02 | ||
JP2005193488A JP2006242373A (ja) | 2004-09-24 | 2005-07-01 | 密封装置 |
JP2005-193488 | 2005-07-01 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/171,620 Division US20080272558A1 (en) | 2004-09-24 | 2008-07-11 | Sealing device |
US12/171,584 Division US20080272556A1 (en) | 2004-09-24 | 2008-07-11 | Sealing device |
Publications (1)
Publication Number | Publication Date |
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WO2006033202A1 true WO2006033202A1 (ja) | 2006-03-30 |
Family
ID=36089967
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/014170 WO2006033202A1 (ja) | 2004-09-24 | 2005-08-03 | 密封装置 |
Country Status (6)
Country | Link |
---|---|
US (3) | US20070241515A1 (ja) |
EP (1) | EP1793146A1 (ja) |
JP (1) | JP2006242373A (ja) |
KR (1) | KR20070104513A (ja) |
CN (1) | CN101027512A (ja) |
WO (1) | WO2006033202A1 (ja) |
Cited By (2)
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EP2031269A3 (en) * | 2007-08-31 | 2010-01-27 | Carl Freudenberg KG | Sealing apparatus for reciprocrating shaft |
CN102410334A (zh) * | 2010-08-09 | 2012-04-11 | Skf公司 | 单管式减震器杆的导向和密封单元和环形密封组件 |
Families Citing this family (20)
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JP2006242373A (ja) * | 2004-09-24 | 2006-09-14 | Nok Corp | 密封装置 |
US7828300B2 (en) * | 2006-09-21 | 2010-11-09 | Nok Corporation | Sealing device for reciprocating shaft |
CN101680254B (zh) * | 2007-06-12 | 2013-07-03 | 纹周五金株式会社 | 铰链阻尼器 |
JP2009144763A (ja) * | 2007-12-12 | 2009-07-02 | Nok Corp | 逆止弁 |
CN102906472B (zh) * | 2010-03-12 | 2016-03-16 | Skf公司 | 低摩擦密封 |
JP5692504B2 (ja) * | 2010-09-21 | 2015-04-01 | Nok株式会社 | ガスケット |
US20130154192A1 (en) * | 2011-12-15 | 2013-06-20 | Trelleborg Sealing Solutions Us, Inc. | Sealing assembly |
ITTO20120307A1 (it) * | 2012-04-06 | 2013-10-07 | Skf Ab | Dispositivo anulare di tenuta |
JP5879206B2 (ja) * | 2012-05-31 | 2016-03-08 | 日立オートモティブシステムズ株式会社 | シリンダ装置 |
WO2014183542A1 (zh) * | 2013-05-16 | 2014-11-20 | 烟台润蚨祥油封有限公司 | 往复运动密封件 |
JP2015014303A (ja) * | 2013-07-03 | 2015-01-22 | Nok株式会社 | 密封装置 |
JP6150737B2 (ja) * | 2014-02-03 | 2017-06-21 | 株式会社ニフコ | ダンパー装置 |
US10687642B2 (en) | 2016-02-05 | 2020-06-23 | Havi Global Solutions, Llc | Microstructured packaging surfaces for enhanced grip |
US9988201B2 (en) | 2016-02-05 | 2018-06-05 | Havi Global Solutions, Llc | Micro-structured surface with improved insulation and condensation resistance |
US10752415B2 (en) | 2016-04-07 | 2020-08-25 | Havi Global Solutions, Llc | Fluid pouch with inner microstructure |
US10434837B2 (en) * | 2017-09-28 | 2019-10-08 | Hanon Systems | Rib seal on front of dash seal |
EP3501960B1 (en) * | 2017-12-22 | 2021-11-10 | Campagnolo S.r.l. | Bicycle bottom bracket |
CN112204278B (zh) * | 2018-07-09 | 2023-02-17 | Nok株式会社 | 密封装置 |
JP7058573B2 (ja) * | 2018-08-29 | 2022-04-22 | 日立Astemo株式会社 | 緩衝器 |
CN111015521B (zh) * | 2018-10-09 | 2020-10-09 | 山东莱阳市昌誉密封产品有限公司 | 一种降低盒式油封摩擦扭矩的加工方法及其专用喷砂装置 |
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JP2006242373A (ja) * | 2004-09-24 | 2006-09-14 | Nok Corp | 密封装置 |
-
2005
- 2005-07-01 JP JP2005193488A patent/JP2006242373A/ja active Pending
- 2005-08-03 EP EP05768487A patent/EP1793146A1/en not_active Withdrawn
- 2005-08-03 WO PCT/JP2005/014170 patent/WO2006033202A1/ja active Application Filing
- 2005-08-03 KR KR1020077007762A patent/KR20070104513A/ko not_active Application Discontinuation
- 2005-08-03 US US11/661,571 patent/US20070241515A1/en not_active Abandoned
- 2005-08-03 CN CNA2005800322146A patent/CN101027512A/zh active Pending
-
2008
- 2008-07-11 US US12/171,620 patent/US20080272558A1/en not_active Abandoned
- 2008-07-11 US US12/171,584 patent/US20080272556A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02136858U (ja) * | 1989-04-19 | 1990-11-15 | ||
JP2001355740A (ja) | 2000-06-15 | 2001-12-26 | Nok Corp | オイルシール |
JP2002022027A (ja) * | 2000-07-04 | 2002-01-23 | Nok Corp | オイルシール |
JP2002206644A (ja) * | 2001-01-12 | 2002-07-26 | Nok Corp | 密封装置 |
JP2003074710A (ja) * | 2001-08-30 | 2003-03-12 | Nok Corp | 密封装置 |
JP2004138091A (ja) | 2002-10-15 | 2004-05-13 | Nok Corp | 往復動シール |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2031269A3 (en) * | 2007-08-31 | 2010-01-27 | Carl Freudenberg KG | Sealing apparatus for reciprocrating shaft |
CN102410334A (zh) * | 2010-08-09 | 2012-04-11 | Skf公司 | 单管式减震器杆的导向和密封单元和环形密封组件 |
Also Published As
Publication number | Publication date |
---|---|
KR20070104513A (ko) | 2007-10-26 |
JP2006242373A (ja) | 2006-09-14 |
CN101027512A (zh) | 2007-08-29 |
US20070241515A1 (en) | 2007-10-18 |
US20080272556A1 (en) | 2008-11-06 |
US20080272558A1 (en) | 2008-11-06 |
EP1793146A1 (en) | 2007-06-06 |
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