WO2006137182A1 - オイルシールおよびその製造方法 - Google Patents
オイルシールおよびその製造方法 Download PDFInfo
- Publication number
- WO2006137182A1 WO2006137182A1 PCT/JP2005/022922 JP2005022922W WO2006137182A1 WO 2006137182 A1 WO2006137182 A1 WO 2006137182A1 JP 2005022922 W JP2005022922 W JP 2005022922W WO 2006137182 A1 WO2006137182 A1 WO 2006137182A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lip
- rubber
- coating
- oil seal
- seal
- Prior art date
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Classifications
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- 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
- F16J15/3244—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with hydrodynamic pumping action
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- 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
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- 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
Definitions
- the present invention relates to an oil seal that is a kind of sealing device and a method for manufacturing the same.
- the lip length is set to be shorter as the tightening force on the shaft is reduced, so that compatibility with the shaft following high eccentricity is achieved.
- the lip design is difficult, and therefore there is a disadvantage that the sliding resistance cannot be significantly reduced.
- the latter method (2) a method of coating various coatings on the lip sliding portion has been studied for a long time, but there is a disadvantage that the sliding resistance increases at an extremely early stage due to the initial wear of the coating coating. is there.
- the method of attaching the fluororesin sheet to the lip sliding portion has a problem that the durability of the adhesion between the lip base rubber and the resin sheet becomes a problem or the sealing performance is impaired ( (See Patent Document 1 or 2).
- PTFE polytetrafluoroethylene
- an oil seal in which a resin layer in which a dispersion of a solid lubricant is bonded to a slope on the atmosphere side of a lip sliding portion with a binding resin (binder) is known.
- a binding resin binder
- the lip sliding portion that reduces the friction coefficient is in contact with the shaft only by the resin layer, the contact state of the lip sliding portion with the shaft becomes unstable, and thus There is an inconvenience that the rubbing property is lowered.
- the strength of the imide resin or the epoxy resin is S.
- These resins are binders used in general fluororesin processing, and when these are applied to the surface of a seal lip made of rubber-like elastic material, the coating layer May cause a problem in durability during sliding (breakage of the coating layer, occurrence of peeling, etc.) (see Patent Document 6).
- Patent Document 7 the applicant of the present application has proposed various coating layers applied to the lip sliding portion, and these are different in content from the present invention.
- Patent Document 8 the applicant of the present application has proposed various coating layers applied to the lip sliding portion, and these are different in content from the present invention.
- Patent Document 1 Japanese Utility Model Publication No. 6-16771
- Patent Document 2 Kokaihei 5-57523
- Patent Literature 3 Kokaihei 6-35740
- Patent Document 4 Kohei No. 9-68011
- Patent Document 5 Kohei No. 8-48800
- Patent Document 6 JP-A-7-217746
- Patent Document 7 Japanese Patent Laid-Open No. 63-8-1428
- Patent Document 8 Japanese Patent No. 3316993
- Patent Document 9 Japanese Patent Laid-Open No. 2003-213122
- the present invention can maintain an excellent friction reducing function over a long period of time, an oil seal excellent in wear resistance, strength and sealability, and its The purpose is to provide a manufacturing method.
- an oil seal according to claim 1 of the present invention is an oil having a seal lip made of a rubber-like elastic material provided with an air-side inclined surface and a sealing fluid-side inclined surface on both sides of a lip edge portion.
- the atmosphere-side slope has a coating film on the surface thereof
- the lip edge portion has a rubber part on the sealing fluid side and a coating film on the atmosphere side simultaneously in contact with the shaft at the contact portion with the shaft.
- the oil seal according to claim 2 of the present invention is the oil seal according to claim 1, wherein the coating film is formed of a coating agent comprising a fluororesin, a polyethylene resin, an isocyanate-modified polybutadiene resin, and a solvent. It is characterized by being.
- the present invention proposes a low torque method and a low torque seal based on seal lubrication and a seal mechanism.
- the seal sliding surface is said to be in a fluid lubrication state in which the shaft and the seal lip are separated by a sealing fluid (for example, oil).
- a sealing fluid for example, oil
- oil film becomes thinner from the sealed fluid side (oil tank side) to the atmosphere side that is not uniform throughout (reference: tribologist 48, 6 (2003) 494).
- the frictional torque of the seal is considered to be mainly due to the shearing force accompanying shaft rotation, and this shearing force is inversely related to the oil film thickness. In other words, reducing the coefficient of friction in this area, where the oil side with a small oil film contributes significantly to the friction torque of the seal, is considered effective in reducing the overall torque.
- the sealing action of the seal requires that the sliding surface has an appropriate roughness and that the pressure distribution at the contact point is biased toward the sealing fluid side.
- Surface deformation model) and model as shown in Fig. 2 (circulation flow model).
- the sealing action is thought to be due to the macro- and micro-contact pressure distribution of the sliding surface. Therefore, the formation of a low-friction material such as PTFE on the sliding surface is affected as much as possible. It is preferable not to give.
- the film thickness is sufficiently thinner than the roughness of the seal, or that the film is formed only on a very small part of the sliding surface.
- the film thickness is on the order of submicrons, which is problematic in terms of durability and torque reduction effect. Therefore, the latter method, that is, it is desirable that the coating of the low friction material is present only on a part of the sliding surface. As described above, it is preferable that the portion be on the atmosphere side of the sliding surface for reducing the torque. .
- reference numeral 4 is a rubber seal lip
- 8 is an atmospheric slope
- 9 is a lip edge
- 10 is a sealed fluid slope
- 13 is a shaft
- 14 indicates the coating
- arrow B indicates the sliding direction
- the film formation region is limited to the surface on the lip atmosphere side, so that the seal torque is effectively reduced while maintaining the seal function. Can be made. This is because a low friction material film is formed on the atmosphere side where the contribution of torque is large on the sliding surface, and the formation of the film is limited to a narrow range on the atmosphere side surface. This is because maintaining the roughness as much as possible and keeping the film hardness low will not adversely affect the macro contact pressure distribution. In addition, by forming a film with excellent adhesion on the slope on the atmosphere side of the lip, even if wear progresses, there is a film of low friction material on the atmosphere side of the sliding surface. Sex can be maintained.
- isocyanate-modified polybutadiene resin strength S lip base material Since it chemically reacts with the functional group of rubber, peeling and falling off of fluororesin (PTFE) and coating film are suppressed. Is done.
- the coating film is formed by heat treatment, the adhesion between the lip base rubber and the coating film is strengthened.
- Fluorine tree Fat (PTFE) and polyethylene resin realize low friction, and polybutadiene resin and polyethylene resin suppress the increase in surface hardness, the surface roughness does not increase, and the sealing performance is not impaired.
- the coating film is not easily peeled off by sliding friction and can maintain low friction characteristics for a relatively long period of time.
- low friction is achieved without changing the lip shape with little change in rubber hardness and surface roughness, so low friction can be achieved while maintaining basic seal performance.
- the frictional reduction effect is extremely large, sliding heat generation is reduced, so it is possible to suppress thermal deterioration of the oil to be sealed and lip base rubber, etc., providing a longer-lasting oil seal can do.
- FIG. 4 is a cross-sectional view of an essential part showing a manufacturing process of an oil seal according to an embodiment of the present invention.
- FIG. 5 Enlarged sectional view of the main part showing the contact state of the oil seal with the shaft
- FIG. 6 Cross section of the main part of the oil seal showing an example of the masking method
- FIG. 7 (A) and (B) are cross-sectional views of the essential parts of an oil seal showing another example of the masking method.
- FIG. 8 is a cross-sectional view of main parts of an oil seal according to another embodiment of the present invention.
- the present invention includes the following embodiments.
- the coating surface is formed only on the air side sliding surface by applying the coating agent, heat treatment, and main lip finishing in the above items (2) to (4).
- Embodiment 2 A method for reducing the friction of a seal lip in an oil seal, the step of applying a coating liquid comprising a fluorine resin, a polyethylene resin, an isocyanate-modified polybutadiene resin, and a solvent to the atmosphere-side sliding surface of the seal lip; It is characterized by having a step of baking and drying after coating, and a step of forming a sealing fluid side sliding surface on the seal lip by a knife cut after drying.
- Embodiment 3 ⁇ ⁇ ⁇ ⁇ ⁇
- Isocyanate group-containing 1,2-polybutadiene has a molecular weight of about 1,000 to 3,000 with an isocyanate group added as a terminal group, which is a commercial product, for example, Nippon Soda Products Nisso. TP-1001 (a solution containing 50% by weight of butyl acetate) or the like can be used as it is.
- This polybutadiene resin has better compatibility and compatibility with rubber than a polyurethane resin that reacts with similar isocyanate groups to form a reactive polymer, so it has good adhesion to rubber and particularly good friction and wear resistance. Is a feature.
- this isocyanate group-containing 1,2-polybutadiene has an isocyanate group added to the terminal group, the polymer can be reacted with a functional group on the surface of the vulcanized rubber or a hydroxyl group-containing 1,2-polybutadiene. It can be used as a curing agent for hydroxyl group-containing 1,2-polybutadiene.
- a molecular weight of about 1,000 to 3,000 is used, which is a commercial product, for example, Nippon Soda Product Nisso G_1000, C-1000, GQ-1000, GQ-2000, etc.
- isocyanate group-containing 1,2_polybutadiene and hydroxyl group-containing 1,2-polybutadiene are used in combination, the isocyanate group-containing 1,2_polybutadiene is 25% by weight or more, preferably 40 to 100% by weight, Hydroxyl-containing 1,2_polybutadiene is used in a proportion of 75% by weight or less, preferably 0 to 60% by weight. Isocyanate group-containing 1,2-po If the amount of rebutadiene is less than this, the adhesion to the rubber will be lowered, and consequently the slipping property will be lowered, and the friction and wear resistance will be lowered.
- fluororesins include polytetrafluoroethylene (PTFE), tetrafluoroethylene / hexafluoropropylene copolymer, tetrafluoroethylene Z perfluoro (alkyl vinyl ether) copolymer, polyvinylidene fluoride, and poly (vinyl fluoride). And ethylene Z tetrafluoroethylene copolymer.
- PTFE polytetrafluoroethylene
- These fluororesin particles include those obtained by classifying fluororesins obtained by bulk polymerization, suspension polymerization, solution polymerization, emulsion polymerization, etc.
- a dispersion obtained by dispersing the particles to about 0.1-5 ⁇ m by shearing stirring, etc., or a product obtained by the above polymerization is coagulated and dried, followed by dry grinding or cooling grinding to 10 zm In the following, fine particles are used.
- the particle size is set to 0.1 to 10 zm, if the particle size is smaller, the coating thickness can be reduced, and there is a merit that does not deteriorate the sealing performance, but the unevenness of the coating surface is reduced.
- the particle size is appropriately adjusted according to the usage requirements, and for oil seal parts, it is determined in consideration of the sealing properties, and preferably about 0.5 to 5 ⁇ .
- Polyethylene resin is also equivalent to fluororesin.
- 1,2-polybutadiene is used as a solution in an organic solvent in a proportion of 10 to 160 parts by weight of a polyethylene resin and 10 to 160 parts by weight of a fluororesin with respect to 100 parts by weight of a polybutadiene. . If the proportion of the polyethylene resin is higher than this range, the adhesion to rubber and the friction and wear resistance will be poor. On the other hand, if the ratio of the fluororesin is larger than this, the adhesion to rubber, the friction and wear resistance and the sealing properties will be deteriorated, the flexibility of the coating will be impaired, and the cured coating will be cracked. If it is less than the range, the slipperiness becomes worse.
- the polyethylene resin and the fluororesin are each 25 to 120 parts by weight.
- Examples of the organic solvent include toluene, xylene, ethyl acetate, butyl acetate, and methyl ethyl keto. And methyl isobutyl ketone are used, and a commercially available solvent can be used as it is.
- the amount diluted with the organic solvent is appropriately selected according to the coating thickness.
- the coating thickness is usually 1 to 10 ⁇ , preferably 2 to 7 / im. If the coating thickness is smaller than this, the rubber surface unevenness cannot be covered completely, and slipperiness is reduced. There is power S to lose. On the other hand, if the coating thickness is larger than this, the rigidity of the coating surface increases, and the sealing performance and flexibility may be impaired.
- Examples of rubbers that can be treated with the above coating agent include fluorine rubber, nitrile rubber, hydrogenated nitrinole rubber, ethylene-propylene rubber, sterene-butadiene rubber, acrylic rubber, chloroprene rubber, butyl rubber, and natural rubber.
- rubber materials that are less likely to bloom on the rubber surface layer such as an anti-aging agent and oil blended in the rubber are preferably used.
- the blending ratio of the above components, the type of organic solvent, the amount of organic solvent, and the mixing ratio of organic solvents are appropriately selected.
- Examples of the application method to the oil seal include application methods such as spray, roll coater, flow coater, and ink jet. If an oil seal is coated on the outer periphery, it cannot be fixed after installation, so apply only to the seal lip.
- the coating method is not limited to these methods, but spray coating is preferable because partial coating can be easily performed.
- FIG. 4 shows a cross section of the main part of the oil seal 1 according to the embodiment, and the oil seal 1 is manufactured as follows.
- a rubber elastic body portion indicated as a whole by 2 is molded by using a mold and using fluororubber as a molding material.
- the rubber elastic body part 2 which is attached (vulcanized and bonded) to the metal ring 3 at the same time as the molding has a main lip (sealing lip) 4 for mainly sealing the sealing fluid (sealing medium) and mainly external dust.
- the main lip 4 is formed with a gutter spring 7 mounting groove 6.
- the sliding surface of the main lip 4 is formed with an atmospheric slope (atmospheric sliding surface) 8.
- the lip edge 9 and the lip edge 9 sandwich the lip edge 9 on the opposite side in the axial direction. Sealed fluid side slope (seal fluid side sliding surface) 10 is the force of the knife to be implemented later (later) It is decided to form this in the mold C, and in the molding step using the mold, the groove portion 11 is integrally formed in the portion.
- a coating agent is prepared and applied to the atmosphere-side inclined surface 8 of the molded main lip 4 and the sealed fluid-side inclined surface 12 of the dust lip 9, respectively.
- the coating agent use is made of a fluororesin, a polyethylene resin, an isocyanate-modified polybutadiene resin and a solvent.
- the coating thickness is about 2 to 20 x m. In the figure, each application area is indicated by a dotted line. If the coating thickness is smaller than this, the friction is not reduced. If the coating thickness is larger than this, the sealing fluid may leak.
- the coating agent was chemically bonded to the slopes 8 and 12 by drying and curing at 150 to 250 ° C for 1 minute to 24 hours.
- the lip edge portion 9 and the sealing fluid side inclined surface 10 are formed on the main lip 4. Since no coating agent is applied to the sealed fluid side slope 10, a coating film is formed only on the atmosphere side slope 8.
- the lip edge portion 9 is bent at the contact portion with the shaft 13 as shown in an enlarged view in FIG.
- the rubber part 2 'on the fluid side and the coating film 14 on the atmosphere side simultaneously contact the peripheral surface of the shaft 13 with a predetermined contact width (contact width of the rubber part 2').
- L represents the contact width of the coating film 14).
- the curing treatment is performed at a temperature lower than the range of 150 to 250 ° C and 1 minute to 24 hours for a short time, the adhesion with the rubber and the coating are insufficiently cured, resulting in low friction. Or the wear resistance (low friction durability) is impaired.
- drying and curing are performed at 150 to 250 ° C. for 5 minutes to 15 hours. If the curing process is performed at a temperature higher than this range for a long time, the film and rubber are cured and deteriorated, leaking of the sealing fluid occurs and the sealing performance is impaired. Therefore, it is necessary to appropriately set the heating temperature and the heating time according to the heat resistance of various base materials. Drying and curing treatments use commercially available machines such as general air-heated closed ovens and continuous tunnel furnaces.
- the coating film 14 and the inclined surfaces 8 and 12 to which the coating film 14 is applied are firmly coupled.
- low friction can be achieved without changing the shape of each lip 4, 5, it is possible to achieve low friction while maintaining the basic seal performance.
- the friction reduction effect can be achieved between 30% and 60% compared to products without coating.
- the friction reduction effect is extremely large, sliding heat generation is reduced, so it is possible to suppress thermal deterioration of oil and lip base rubber, etc., which is a sealing fluid, and a longer-lasting oil seal 1 Can be provided.
- the main lip 4 is finished with a knife after the coating agent is applied, so that the sharpness of the lip edge portion 9 is sufficiently ensured, so that good sealing performance can be exhibited.
- the present invention is characterized in that no coating agent is applied to the lip surface on the sealing fluid side from the lip sliding portion.
- Embodiment 4 described above the characteristics are satisfied by performing the knife cut C after the coating agent is applied.
- the coating agent is applied after the knife cut C, the sealing fluid side inclined surface 10 of the lip 4 is masked.
- the same effect can be obtained by means such as applying only to the atmosphere side slope 8 or applying only partially to the atmosphere side slope 8 by brush coating or the like. To do. Therefore, the following two modes can be considered as a manufacturing method.
- a method for producing an oil seal according to claim 1 or 2 wherein a coating agent is applied to the atmosphere-side inclined surface 8 with the seal lip 4 having the groove portion 11 provided with the atmosphere-side inclined surface 8 being applied. And a step of forming the coating film 14 by curing the coating agent by heat treatment after application, and a step of forming the lip edge portion 9 and the sealing fluid side slope 10 by the knife cut C after the formation.
- a method for producing an oil seal comprising: a step of applying a coating agent only to the atmosphere side slope 8; and a step of forming a coating film 14 by curing the coating agent by heat treatment after the application.
- the sealing fluid side inclined surface 10 is masked by using a masking jig 21 that contacts and covers the sealing fluid side inclined surface 10 of the seal lip 4, and then the sealing lip Apply coating agent to the atmospheric side slope 8 of 4.
- the masking jig 21 shown in the figure has an annular inclined surface 22 that contacts the entire surface of the sealing fluid side inclined surface 10 of the seal lip 4 and covers the entire surface.
- the seal lip 4 is fitted into an axial masking jig 23 having a cylindrical or conical surface 24, and then the seal lip Apply coating agent to the atmospheric slope 8 of 4.
- the shaft-shaped masking jig 23 the shaft 13 itself may be used. In any case, this shaft-shaped masking jig 23 does not directly contact the sealing fluid side inclined surface 10 of the seal lip 4 and does not directly cover the inclined surface 10, but contacts the lip edge portion 9 to the atmosphere side. Since the slope 8 and the sealed fluid side slope 10 are partitioned, the sealed fluid side slope 10 is substantially masked.
- the coating of the lip 4 is characterized in that it is applied in the narrowest possible range of the atmospheric slope 8 with the sliding part as the tip. If the coating is thick, if the coating agent is applied over a wide area, the tension will increase, and there is a concern that the effect of reducing tonorecking by the coating may be suppressed. It only needs to be applied to the skin.
- the oil seal 1 in which the screw portion 15 formed by the combination of the parallel protrusion 16 and the bottom-shaped protrusion 17 is provided on the atmosphere-side slope 8 of the lip 4 as shown in FIG.
- the middle of the bottom projection 17 is the application range E. As a dimensional guide, it is 1.5mm or less.
- the film thickness shall be 20 ⁇ m or less for unthreaded lip products, and the parallel thread height (50 ⁇ 20 ⁇ m) or less for lip products with threads.
- Example 1 ⁇ ⁇ ⁇
- this tonoleene solution was applied to a fluoro rubber formed by compression vulcanization at a thickness of 6 xm using a spray and heat-treated at 200 ° C for 30 minutes. A rub measurement test, a friction wear test, and a surface roughness measurement were performed. Also, partially apply the above-mentioned toluene solution to the atmosphere-side slope 8 of an oil seal (inner diameter 85 mm, outer diameter 105 mm, width 13 mm) made of vulcanized fluoro rubber, and after heat treatment, use a female cut C to seal the sliding fluid side sliding surface 9 The following oil seal rotation test (oil seal friction torque measurement test) was conducted.
- Friction and abrasion test For 2mm fluororubber sheet coated as described above, according to JIS K7125, P8147, using a surface testing machine (manufactured by Shinto Kagaku) and made of stainless steel as the mating material By using a pulling needle with a diameter of 0.4 mm, moving speed of 400 mmZ, reciprocating movement width of 30 mm, and a load test of 300 g. Judgment was made in the following three stages.
- Oil seal friction torque measurement test Vulcanized fluororubber oil seal (inner diameter 85mm, outer diameter 105mm, width 13mm) is coated with the above coating and sealed under conditions of test temperature 100 ° C and rotation speed 200 Orpm. In this state, the initial friction torque immediately after the start of the test and the friction torque 1 hour after the start of the test were measured to confirm whether there was oil leakage.
- Example 2 Various tests were carried out in the same manner as in Example 1 except that coating and heating were performed using the tonolene solution comprising the above components.
- Example 2 the polyethylene resin was changed to 50 parts by weight and the polytetrafluoroethylene was changed to 50 parts by weight.
- Example 2 the polyethylene resin was changed to 500 parts by weight and the polytetrafluoroethylene was changed to 500 parts by weight.
- Example 2 the polyethylene resin was changed to 30 parts by weight and the polytetrafluoroethylene was changed to 30 parts by weight.
- Example 2 the polyethylene resin was changed to 600 parts by weight and the polytetrafluoroethylene was changed to 600 parts by weight.
- Polyester polyol resin (Dai Nippon Ink Chemical Co., Ltd. D6-439) 100 parts by weight
- a methyl ethyl ketone solution consisting of the above components was applied to a vulcanized fluoro rubber that had been compression-molded at a thickness of 15 / im using a spray, heat-treated at 80 ° C for 30 minutes, and then the same as in Example 1.
- Various tests were conducted in the same manner.
- Comparative Example 6 In Comparative Example 5, polytetrafluoroethylene was changed to 130 parts by weight, and 60 parts by weight of silicone rubber powder (Shin-Etsu Chemical KMP-594) and Graphite (SCI Co., Ltd. product SGO-GB) 130 parts by weight. Part of the methyl ethyl ketone solution was used for coating.
- a spray was applied to a vulcanized fluoro rubber obtained by compression molding the above-mentioned Tonolen solution consisting of the above components, and applied to a thickness of 5 ⁇ . After drying the solvent, various tests were conducted in the same manner as in Example 1.
- Example 1 the force was not applied.
- Example 1 After cutting the oil seal of Example 1 with a knife, the coating liquid of Example 1 was applied to the air-side sliding surface 8 and the sealing fluid-side sliding surface 9, heat treatment was performed, and then an oil seal rotation test was performed.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/922,634 US7789396B2 (en) | 2005-06-21 | 2005-12-14 | Oil seal and process for producing the same |
KR1020087001544A KR101239771B1 (ko) | 2005-06-21 | 2005-12-14 | 오일시일 및 그 제조방법 |
CN2005800501894A CN101203702B (zh) | 2005-06-21 | 2005-12-14 | 油封及其制造方法 |
EP05816813A EP1895208B1 (en) | 2005-06-21 | 2005-12-14 | Oil seal and process for producing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2005-180964 | 2005-06-21 | ||
JP2005180964A JP4873120B2 (ja) | 2004-08-31 | 2005-06-21 | オイルシール |
Publications (1)
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WO2006137182A1 true WO2006137182A1 (ja) | 2006-12-28 |
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PCT/JP2005/022922 WO2006137182A1 (ja) | 2005-06-21 | 2005-12-14 | オイルシールおよびその製造方法 |
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US (1) | US7789396B2 (ja) |
EP (1) | EP1895208B1 (ja) |
KR (1) | KR101239771B1 (ja) |
CN (1) | CN101203702B (ja) |
WO (1) | WO2006137182A1 (ja) |
Cited By (1)
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EP1854965A1 (en) * | 2006-05-02 | 2007-11-14 | Carl Freudenberg KG | Oil seal |
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EP2500606B1 (en) * | 2009-11-13 | 2014-03-12 | IHI Corporation | Seal structure of fluid device |
EP2693089A4 (en) * | 2011-03-31 | 2015-05-27 | Eagle Ind Co Ltd | SEALING DEVICE AND SEALING STRUCTURE |
EP2537902A1 (en) * | 2011-06-20 | 2012-12-26 | Nok Corporation | Surface-treating agent for oil seals |
US9873781B2 (en) * | 2012-01-12 | 2018-01-23 | Daikin Industries, Ltd. | Acrylic rubber composition, acrylic rubber molded product, and method for producing same |
KR20140110046A (ko) * | 2012-01-23 | 2014-09-16 | 다이킨 고교 가부시키가이샤 | 자동차용 오일 시일 |
CN104169119A (zh) * | 2012-03-13 | 2014-11-26 | 大金工业株式会社 | 汽车用加油口盖 |
JP5637172B2 (ja) * | 2012-04-27 | 2014-12-10 | Nok株式会社 | 密封装置 |
WO2014144617A1 (en) * | 2013-03-15 | 2014-09-18 | Thermo King Corporation | Shaft seal for an open-drive compressor |
JP6177582B2 (ja) * | 2013-05-14 | 2017-08-09 | Nok株式会社 | 密封装置 |
JP6231352B2 (ja) * | 2013-10-29 | 2017-11-15 | Nok株式会社 | オイルシール |
JP6384952B2 (ja) * | 2014-09-09 | 2018-09-05 | 株式会社ジェイテクト | 摺動部材 |
KR101823545B1 (ko) * | 2014-09-22 | 2018-01-30 | 에누오케 가부시키가이샤 | 가황 고무용 표면처리제 |
WO2016132982A1 (ja) * | 2015-02-17 | 2016-08-25 | Nok株式会社 | オイルシール用コーティング剤 |
JP2018204761A (ja) * | 2017-06-08 | 2018-12-27 | Nok株式会社 | ダストシール |
US20200124177A1 (en) * | 2018-10-22 | 2020-04-23 | Harry Arnon | Method of coating a shaft seal for use with rotating parts |
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2005
- 2005-12-14 EP EP05816813A patent/EP1895208B1/en active Active
- 2005-12-14 CN CN2005800501894A patent/CN101203702B/zh active Active
- 2005-12-14 US US11/922,634 patent/US7789396B2/en active Active
- 2005-12-14 KR KR1020087001544A patent/KR101239771B1/ko active IP Right Grant
- 2005-12-14 WO PCT/JP2005/022922 patent/WO2006137182A1/ja active Application Filing
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EP1854965A1 (en) * | 2006-05-02 | 2007-11-14 | Carl Freudenberg KG | Oil seal |
Also Published As
Publication number | Publication date |
---|---|
CN101203702A (zh) | 2008-06-18 |
US7789396B2 (en) | 2010-09-07 |
EP1895208A4 (en) | 2011-06-01 |
EP1895208A1 (en) | 2008-03-05 |
KR101239771B1 (ko) | 2013-03-06 |
KR20080022204A (ko) | 2008-03-10 |
EP1895208B1 (en) | 2012-07-04 |
CN101203702B (zh) | 2011-07-13 |
US20090200750A1 (en) | 2009-08-13 |
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