WO2008096726A1 - Sealing device and hydraulic cylinder - Google Patents

Sealing device and hydraulic cylinder Download PDF

Info

Publication number
WO2008096726A1
WO2008096726A1 PCT/JP2008/051812 JP2008051812W WO2008096726A1 WO 2008096726 A1 WO2008096726 A1 WO 2008096726A1 JP 2008051812 W JP2008051812 W JP 2008051812W WO 2008096726 A1 WO2008096726 A1 WO 2008096726A1
Authority
WO
WIPO (PCT)
Prior art keywords
sealing region
sealing device
prevented
hydraulic cylinder
sealing
Prior art date
Application number
PCT/JP2008/051812
Other languages
French (fr)
Japanese (ja)
Inventor
Takeshi Wakana
Manabu Hirano
Hikaru Tadano
Toshiyuki Maeda
Original Assignee
Nok Corporation
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nok Corporation filed Critical Nok Corporation
Priority to CN2008800002813A priority Critical patent/CN101542170B/en
Publication of WO2008096726A1 publication Critical patent/WO2008096726A1/en

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
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1457—Piston rods
    • F15B15/1461—Piston rod sealings
    • 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
    • F16J10/00—Engine or like cylinders; Features of hollow, e.g. cylindrical, bodies in general
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • F16J15/3208—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip provided with tension elements, e.g. elastic rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Sealing Devices (AREA)
  • Actuator (AREA)

Abstract

A sealing device in which gas leakage to a first sealing region in which liquid is sealed is prevented and liquid leakage to a second sealing region in which gas is sealed is more reliably prevented. In the sealing device (50), nitrogen gas leakage to the first sealing region (O) is prevented and oil leakage to the second sealing region (G) is prevented. The shape of the tip of a first seal lip (51) provided on the first sealing region (O) side and the shape of the tip of a second seal lip (52) provided on the second sealing region (G) are formed such that the thickness of an oil film formed at a sliding portion between the first seal lip (51) and the surface of a piston (32) when the former slides on the latter is less than the thickness of an oil film formed at a sliding portion between the second lip (52) and the surface of the piston (32) when the former slides on the latter.
PCT/JP2008/051812 2007-02-06 2008-02-05 Sealing device and hydraulic cylinder WO2008096726A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2008800002813A CN101542170B (en) 2007-02-06 2008-02-05 Sealing device and hydraulic cylinder

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-027130 2007-02-06
JP2007027130A JP5040338B2 (en) 2007-02-06 2007-02-06 Sealing device and hydraulic cylinder

Publications (1)

Publication Number Publication Date
WO2008096726A1 true WO2008096726A1 (en) 2008-08-14

Family

ID=39681635

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/051812 WO2008096726A1 (en) 2007-02-06 2008-02-05 Sealing device and hydraulic cylinder

Country Status (4)

Country Link
JP (1) JP5040338B2 (en)
KR (1) KR101116343B1 (en)
CN (1) CN101542170B (en)
WO (1) WO2008096726A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102032346B (en) * 2009-09-30 2013-06-05 中国船舶重工集团公司第七一○研究所 Sealed rotation shaft capable of bearing combined moment
US8973921B2 (en) 2010-03-09 2015-03-10 Baker Hughes Incorporated High temperature/high pressure seal
CN103671930B (en) * 2013-12-12 2016-08-24 南车二七车辆有限公司 A kind of odd-shaped cross section Pneumatic sealing ring
CN103968072A (en) * 2014-05-21 2014-08-06 西北工业大学 Novel sealing element
US20160039079A1 (en) * 2014-08-11 2016-02-11 Caterpillar Inc. Hydraulic hammer having single piece seal assembly
JP5847899B1 (en) * 2014-08-19 2016-01-27 Nok株式会社 High pressure gas seal
JP5932940B2 (en) 2014-10-17 2016-06-08 Nok株式会社 Rubber gasket
CN104613045B (en) * 2015-02-13 2016-08-24 樊硕 Nitrogen energy-storage hydraulic cylinder
CN112161059B (en) * 2020-10-29 2021-11-30 清华大学 Elastic energy storage sealing assembly

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62104072U (en) * 1985-12-19 1987-07-02
JPH01174677U (en) * 1988-05-30 1989-12-12
JPH0527430U (en) * 1991-09-24 1993-04-09 エヌオーケー株式会社 Reciprocating sealing device
JPH0552385U (en) * 1991-12-24 1993-07-13 エヌオーケー株式会社 Sealing device for shock absorber
JPH074959U (en) * 1993-06-18 1995-01-24 エヌオーケー株式会社 Reciprocating sealing device
JP2004183799A (en) * 2002-12-04 2004-07-02 Kayaba Ind Co Ltd Seal structure of sliding part

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3539066B2 (en) * 1996-04-24 2004-06-14 Ｎｏｋ株式会社 Reciprocating sealing device
EP1394452A4 (en) * 2001-06-04 2007-09-19 Nok Corp Sealing device
DE10329893A1 (en) * 2003-07-03 2005-02-03 Carl Freudenberg Kg poetry

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62104072U (en) * 1985-12-19 1987-07-02
JPH01174677U (en) * 1988-05-30 1989-12-12
JPH0527430U (en) * 1991-09-24 1993-04-09 エヌオーケー株式会社 Reciprocating sealing device
JPH0552385U (en) * 1991-12-24 1993-07-13 エヌオーケー株式会社 Sealing device for shock absorber
JPH074959U (en) * 1993-06-18 1995-01-24 エヌオーケー株式会社 Reciprocating sealing device
JP2004183799A (en) * 2002-12-04 2004-07-02 Kayaba Ind Co Ltd Seal structure of sliding part

Also Published As

Publication number Publication date
JP2008190661A (en) 2008-08-21
KR20090012218A (en) 2009-02-02
CN101542170B (en) 2013-06-12
JP5040338B2 (en) 2012-10-03
KR101116343B1 (en) 2012-03-09
CN101542170A (en) 2009-09-23

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