WO2006126451A1 - リップタイプシール - Google Patents
リップタイプシール Download PDFInfo
- Publication number
- WO2006126451A1 WO2006126451A1 PCT/JP2006/310005 JP2006310005W WO2006126451A1 WO 2006126451 A1 WO2006126451 A1 WO 2006126451A1 JP 2006310005 W JP2006310005 W JP 2006310005W WO 2006126451 A1 WO2006126451 A1 WO 2006126451A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lip
- type seal
- tip
- flat surface
- lip type
- Prior art date
Links
- 230000013011 mating Effects 0.000 claims abstract description 8
- 239000011347 resin Substances 0.000 claims abstract description 7
- 229920005989 resin Polymers 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 5
- 239000004519 grease Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
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
- F16J15/3212—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 with metal springs
-
- 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
- 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
- F16J15/3236—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips with at least one lip for each surface, e.g. U-cup packings
Definitions
- the present invention is used for reciprocating motions used in general hydraulic / pneumatic / hydraulic equipment and is made of a resin such as PTFE.
- the lip type seal is used for reciprocating motions used in general hydraulic / pneumatic / hydraulic equipment and is made of a resin such as PTFE.
- the lip type seal is used for reciprocating motions used in general hydraulic / pneumatic / hydraulic equipment and is made of a resin such as PTFE.
- the lip type seal is made of a resin such as PTFE.
- the seal performance of lip-type seals is greatly affected by the shape of the tip of the lip, and the shape of the tip of the lip has a cross-section when molded with a material that facilitates creep, such as PTFE.
- the seal performance changed over time due to the compression force and sliding with the shaft, and there was a drawback that stable seal performance could not be obtained.
- the purpose of making the shape of the tip 103 of the lip 102 into the R shape 104 is to place importance on wear resistance by securing an oil film on the sliding surface, but has the disadvantage that sealing performance is slightly inferior.
- the shape of the front end portion 103 is a sharp shape 105 aiming at reducing the amount of leakage, the sealing performance is ensured, but there is a disadvantage that the wear resistance is slightly inferior.
- the following patent document describes that an annular flat surface that is slidably in close contact with a mating member is formed at a tip end portion of a seal lip of an oil seal with a predetermined axial width.
- lip type seals made of resin are not disclosed at all.
- Patent Document 1 Japanese Patent Application Laid-Open No. 11 311338
- Patent Document 2 Japanese Patent Laid-Open No. 2002-022027
- the present invention has been made in view of the above points, and an object of the present invention is to make a lip type made of resin that is installed in an annular gap between a fixed member and a reciprocating operating member. In the seal, the shape of the tip of the lip that is in close contact with the mating member is prevented from changing over time.
- Another object is to provide both the function of ensuring low leakage, which is a feature of the sharp shape of the tip of the lip, and the function of ensuring the oil film thickness, which is a feature of the R shape. It must be well balanced.
- a lip type seal according to the present invention is made of a resin having a hole portion having one end opened in an annular gap between a fixed member and a reciprocating operating member.
- This lip type seal is characterized in that a flat surface having an axial width having an edge portion is formed at the tip of the lip, and the flat surface is in close contact with the mating member.
- the lip type seal may be provided with a panel panel, a coil spring, or an o-ring in the hole. Further, it is preferable that the axial width of the flat surface is set within a range of 5 to 30% of the axial width of the lip portion.
- the present invention has the following effects.
- the lip type seal according to the present invention having the above-described configuration is formed with a flat surface having an axial width having an edge portion at the tip portion of the lip, Even if the main body is made of a material such as PTFE, which is made of grease, the tip of the lip changes over time due to the compressive force of the cross section and sliding with the shaft. Therefore, stable sealing performance as designed can be maintained for a long time.
- the tip portion of the lip is formed in a flat surface, the contact area is increased and the surface pressure is lowered as compared with the R shape and the sharp shape. Even in this case, the shape of the lip tip does not change with time, and thus the stable sealing performance as designed can be maintained for a long time.
- the flat surface formed at the tip of the lip has an edge, the low-leakage function, which is a characteristic function when the tip of the conventional lip has a sharp shape, is edged.
- the flat surface exhibits the function of ensuring the oil film thickness, which is a characteristic function when the part is in an R shape, and the shape of the tip can be ensured in a balanced manner.
- the axial width of the flat surface is set within a range of 5 to 30% of the total axial width of the lip.
- the lip type seal according to the present invention is a surface contact due to the formation of a flat surface rather than an edge or a line contact, so that the sealing performance is improved, and a highly viscous liquid such as grease is used. It is also suitable for use with low-viscosity liquids such as gasoline.
- FIG. 1 is a cross-sectional view of a lip type seal according to Embodiment 1 of the present invention.
- FIG. 3 is a mounting cross-sectional view of a lip type seal according to Embodiment 1 of the present invention.
- FIG. 4 is a sectional view of a lip type seal according to Embodiment 2 of the present invention.
- the lip type seal 1 according to Embodiment 1 of the present invention is installed in an annular space between a housing (not shown) and a shaft that is reciprocated through the inner periphery thereof.
- a seal body 2 and a plate panel 11 are provided.
- the seal body 2 is integrally formed with PTFE, which is a resin, and is in close contact with the housing so as to be slidable between the outer lip 3 and the shaft which mainly seals the gasoline to be sealed on the right side of the figure. It is also provided with an inner lip 4 that closely seals gasoline, and a hole 5 that opens to the gasoline side (G).
- PTFE a resin
- FIG. 2 shows an enlarged state of the distal end portion 41 of the inner diameter side lip 4 surrounded by a broken line in FIG.
- Tip Reference numeral 41 denotes a flat surface 21 having a predetermined width that is flat in the axial direction, and the flat surface 21 has an edge portion 22 at an end in the width direction.
- the axial width W of the flat surface 21 formed at the tip 41 is the inner diameter side lip shown in FIG.
- the tip 31 of the outer diameter lip 3 is also the same as the inner lip 4, and as shown in FIG. 1, is formed by a flat surface 21 having an edge 22 at the end in the width direction.
- the axial width W of the surface 21 is set within a range of 5 to 30% with respect to the total axial width A of the outer diameter side lip 3.
- a plate panel 11 having a substantially U-shaped cross-section opened to the gasoline side (G) is internally provided in the hole portion 5 provided at one end of the seal body 2 and having an outer diameter. A radial pressing force is applied to the side lip 3 and the inner diameter lip 4.
- FIG. 3 shows a state in which the lip type seal 1 having the above-described configuration is installed in an annular space between the housing 12 and a shaft 13 that is reciprocated through the inner periphery thereof.
- the outer diameter lip 3 is in close contact with the housing 12 which is the mating member, and the flat surface 21 formed at the tip 31 is in close contact, and the inner lip 4 is the tip 41 with respect to the shaft 13 which is the mating member
- the flat surface 21 formed at the distal end portions (31, 41) of the outer diameter lip 3 and the inner diameter lip 4 has the edge portion 22 at the axial end portion, the distal end portion of the conventional lip
- the edge 22 exhibits a low-leakage function, which is a characteristic function when the lip is sharp, and the oil film thickness, which is a characteristic function when the conventional lip tip force is 3 ⁇ 4-shaped.
- the flat surface 21 exhibits the function to be secured, and the tip of the lip can be designed with a good balance between the function of low leakage and the function of securing the oil film thickness.
- the lip type seal 1 according to the present invention is not an edge or a line contact but a surface contact due to the formation of the flat surface 21, so that only a high viscosity liquid such as grease is used. It is possible to improve the sealing performance even for a low-viscosity liquid.
- an elastic body such as a coil spring or a collar ring having the same effect is used. May be.
- the lip type seal 1 exhibits a self-sealing function when pressure is applied, and the hole 5 may not be provided with an elastic body such as a panel panel.
- FIG. 4 is a cross-sectional view of a lip type seal 1 according to another embodiment 2 of the present invention.
- an oil lip 6 having a substantially rectangular cross section that is slidably in close contact with a shaft that reciprocates on the anti-gasoline side (G ′) is further provided.
- the tip 61 of the oil lip 6 is formed by a flat surface 21 having an edge 22 at the end in the width direction, like the tips (31, 41) of the outer diameter lip 3 and the inner diameter lip 4.
- the axial width W of the flat surface 21 is set within a range of 5 to 30% with respect to the total axial width A of the oil lip 6.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
- Sealing Devices (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007517796A JPWO2006126451A1 (ja) | 2005-05-27 | 2006-05-19 | リップタイプシール |
CN2006800185035A CN101184940B (zh) | 2005-05-27 | 2006-05-19 | 唇型密封 |
EP06756361A EP1884691A1 (en) | 2005-05-27 | 2006-05-19 | Lip type seal |
US11/921,127 US20090230630A1 (en) | 2005-05-27 | 2006-05-19 | Lip type seal |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-155294 | 2005-05-27 | ||
JP2005155294 | 2005-05-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006126451A1 true WO2006126451A1 (ja) | 2006-11-30 |
Family
ID=37451876
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/310005 WO2006126451A1 (ja) | 2005-05-27 | 2006-05-19 | リップタイプシール |
Country Status (6)
Country | Link |
---|---|
US (1) | US20090230630A1 (ja) |
EP (1) | EP1884691A1 (ja) |
JP (1) | JPWO2006126451A1 (ja) |
KR (1) | KR20080018909A (ja) |
CN (1) | CN101184940B (ja) |
WO (1) | WO2006126451A1 (ja) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101988580A (zh) * | 2009-07-31 | 2011-03-23 | Nok株式会社 | 密封装置 |
WO2011090756A3 (en) * | 2009-12-29 | 2011-11-10 | Saint-Gobain Performance Plastics Corporation | Springs and methods of forming same |
JP2012145130A (ja) * | 2011-01-07 | 2012-08-02 | Ihara Science Corp | ピストンバルブ |
US20150267752A1 (en) * | 2014-03-19 | 2015-09-24 | Roller Bearing Company Of America, Inc. | Bearing outer race having a radially inwardly biased seal |
CN105485346A (zh) * | 2016-02-23 | 2016-04-13 | 亿德机电科技(福建)有限公司 | 一种可径向转动和轴向滑动的密封 |
JP2016118252A (ja) * | 2014-12-22 | 2016-06-30 | Kyb株式会社 | シール部材 |
JPWO2017098622A1 (ja) * | 2015-12-10 | 2018-06-21 | 三菱電機株式会社 | バルブ装置 |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2556110T3 (es) * | 2004-02-25 | 2016-01-13 | John Wentworth Bucknell | Juntas para conjuntos hidráulicos |
JP4877460B2 (ja) * | 2005-06-14 | 2012-02-15 | Nok株式会社 | リップタイプシール |
US8215646B2 (en) | 2008-08-28 | 2012-07-10 | Castleman Larry J | Seal assembly |
DE102012203931A1 (de) * | 2011-08-02 | 2013-02-07 | Continental Teves Ag & Co. Ohg | Kolbenpumpe |
JP5966532B2 (ja) * | 2012-04-02 | 2016-08-10 | セイコーエプソン株式会社 | ロボット |
DE102013109081A1 (de) * | 2013-08-22 | 2015-02-26 | Karl Storz Gmbh & Co. Kg | Wellenringdichtung und Verfahren zum Herstellen einer Wellenringdichtung |
JP6314487B2 (ja) * | 2014-01-16 | 2018-04-25 | Nok株式会社 | 密封装置 |
US9869395B2 (en) * | 2014-02-26 | 2018-01-16 | Garlock Sealing Technologies, Llc | Shaft sealing apparatus and associated methods |
KR20160132083A (ko) * | 2014-03-21 | 2016-11-16 | 생-고뱅 퍼포먼스 플라스틱스 코포레이션 | 회전축 시일 |
KR102110756B1 (ko) | 2014-03-27 | 2020-05-15 | 생-고뱅 퍼포먼스 플라스틱스 코포레이션 | 회전축 하우징 및 시일 |
US10865669B2 (en) | 2015-08-31 | 2020-12-15 | Dana Automotive Systems Group, Llc | Run out tolerant reciprocating cylinder sleeve seal carbon scraper |
CN105546119A (zh) * | 2016-02-02 | 2016-05-04 | 天紫环保投资控股有限公司 | 用于蒸汽弹射装置的高温高压的滑动密封结构 |
EP3434943A1 (en) * | 2016-03-22 | 2019-01-30 | NOK Corporation | Sealing device |
CN105697786B (zh) * | 2016-04-18 | 2017-09-22 | 北京裕泰行新材料科技有限公司 | 超低温密封圈 |
CN105909788B (zh) * | 2016-05-27 | 2018-02-06 | 辽宁华日高新材料股份有限公司 | 制作耐高温式圆环形组件的方法 |
US9976452B1 (en) | 2016-10-31 | 2018-05-22 | Dana Automotive Systems Group, Llc | Reciprocating cylinder liner seal assembly |
CN109253255A (zh) * | 2018-11-30 | 2019-01-22 | 安徽江淮汽车集团股份有限公司 | 密封孔塞 |
EP4074969A4 (en) * | 2019-12-11 | 2023-12-27 | NTN Corporation | SHAFT SEAL |
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JPS6157270U (ja) * | 1984-09-20 | 1986-04-17 | ||
JPS61172257U (ja) * | 1985-04-16 | 1986-10-25 | ||
JPS6457459U (ja) * | 1987-10-06 | 1989-04-10 | ||
JPH11311338A (ja) | 1998-02-27 | 1999-11-09 | Nok Corp | オイルシ―ル |
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JP2003247646A (ja) * | 2002-02-21 | 2003-09-05 | Mitsubishi Cable Ind Ltd | 樹脂製シール |
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US3901517A (en) * | 1972-10-11 | 1975-08-26 | Utex Ind Inc | Dynamic seal |
JPH0799206B2 (ja) * | 1987-03-31 | 1995-10-25 | 株式会社リケン | オイルシ−ル装置 |
JPH028565A (ja) * | 1988-01-11 | 1990-01-12 | Taiho Kogyo Co Ltd | リップシール装置 |
NL9300593A (nl) * | 1993-04-05 | 1994-11-01 | Single Buoy Moorings | Afdichtelement. |
US5472216A (en) * | 1994-09-30 | 1995-12-05 | Parker-Hannifin Corporation | Seal ring for valve stem |
GB9526171D0 (en) * | 1995-12-21 | 1996-02-21 | Dowty Seals Ltd | Gas purge lip seal |
CN2497113Y (zh) * | 2001-08-15 | 2002-06-26 | 成都华西化工研究所 | 唇形密封圈 |
US6722654B1 (en) * | 2003-01-09 | 2004-04-20 | Christopher S. Johnson | Golf card game |
-
2006
- 2006-05-19 US US11/921,127 patent/US20090230630A1/en not_active Abandoned
- 2006-05-19 KR KR1020077030291A patent/KR20080018909A/ko not_active Application Discontinuation
- 2006-05-19 JP JP2007517796A patent/JPWO2006126451A1/ja active Pending
- 2006-05-19 WO PCT/JP2006/310005 patent/WO2006126451A1/ja active Application Filing
- 2006-05-19 EP EP06756361A patent/EP1884691A1/en not_active Withdrawn
- 2006-05-19 CN CN2006800185035A patent/CN101184940B/zh not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6157270U (ja) * | 1984-09-20 | 1986-04-17 | ||
JPS61172257U (ja) * | 1985-04-16 | 1986-10-25 | ||
JPS6457459U (ja) * | 1987-10-06 | 1989-04-10 | ||
JPH11311338A (ja) | 1998-02-27 | 1999-11-09 | Nok Corp | オイルシ―ル |
JP2002022027A (ja) | 2000-07-04 | 2002-01-23 | Nok Corp | オイルシール |
JP2002147614A (ja) * | 2000-11-08 | 2002-05-22 | Daido Metal Co Ltd | 液圧機器用シール |
JP2003247646A (ja) * | 2002-02-21 | 2003-09-05 | Mitsubishi Cable Ind Ltd | 樹脂製シール |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101988580A (zh) * | 2009-07-31 | 2011-03-23 | Nok株式会社 | 密封装置 |
WO2011090756A3 (en) * | 2009-12-29 | 2011-11-10 | Saint-Gobain Performance Plastics Corporation | Springs and methods of forming same |
CN102667267A (zh) * | 2009-12-29 | 2012-09-12 | 美国圣戈班性能塑料公司 | 弹簧及其形成方法 |
RU2532477C2 (ru) * | 2009-12-29 | 2014-11-10 | Сэнт-Гобен Перформанс Пластикс Корпорейшн | Уплотнение (варианты) и способ его формирования |
US9121507B2 (en) | 2009-12-29 | 2015-09-01 | Saint-Gobain Performance Plastics Corporation | Springs and methods of forming same |
CN102667267B (zh) * | 2009-12-29 | 2015-11-25 | 美国圣戈班性能塑料公司 | 弹簧及其形成方法 |
JP2012145130A (ja) * | 2011-01-07 | 2012-08-02 | Ihara Science Corp | ピストンバルブ |
US20150267752A1 (en) * | 2014-03-19 | 2015-09-24 | Roller Bearing Company Of America, Inc. | Bearing outer race having a radially inwardly biased seal |
JP2016118252A (ja) * | 2014-12-22 | 2016-06-30 | Kyb株式会社 | シール部材 |
JPWO2017098622A1 (ja) * | 2015-12-10 | 2018-06-21 | 三菱電機株式会社 | バルブ装置 |
CN105485346A (zh) * | 2016-02-23 | 2016-04-13 | 亿德机电科技(福建)有限公司 | 一种可径向转动和轴向滑动的密封 |
Also Published As
Publication number | Publication date |
---|---|
CN101184940A (zh) | 2008-05-21 |
US20090230630A1 (en) | 2009-09-17 |
JPWO2006126451A1 (ja) | 2008-12-25 |
KR20080018909A (ko) | 2008-02-28 |
EP1884691A1 (en) | 2008-02-06 |
CN101184940B (zh) | 2010-04-14 |
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