EP1715194A3 - Hydraulic actuator - Google Patents

Hydraulic actuator Download PDF

Info

Publication number
EP1715194A3
EP1715194A3 EP05027904A EP05027904A EP1715194A3 EP 1715194 A3 EP1715194 A3 EP 1715194A3 EP 05027904 A EP05027904 A EP 05027904A EP 05027904 A EP05027904 A EP 05027904A EP 1715194 A3 EP1715194 A3 EP 1715194A3
Authority
EP
European Patent Office
Prior art keywords
piston
cylinder
rod
sealing
seal
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.)
Granted
Application number
EP05027904A
Other languages
German (de)
French (fr)
Other versions
EP1715194B1 (en
EP1715194A2 (en
Inventor
Marcus Dr. Fischer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weber Hydraulik GmbH Germany
Original Assignee
Weber Hydraulik GmbH Germany
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 Weber Hydraulik GmbH Germany filed Critical Weber Hydraulik GmbH Germany
Publication of EP1715194A2 publication Critical patent/EP1715194A2/en
Publication of EP1715194A3 publication Critical patent/EP1715194A3/en
Application granted granted Critical
Publication of EP1715194B1 publication Critical patent/EP1715194B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F15B15/1447—Pistons; Piston to piston rod assemblies
    • F15B15/1452—Piston sealings
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sealing Devices (AREA)
  • Actuator (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

Es ist eine hydraulische Zylindereinheit mit einem einen Innenmantel aufweisenden Zylinderrohr mit an diesem geführten, einen Aussenmantel aufweisenden Kolben (8), mit einer mit diesem verbundenen Kolbenstange, deren Stangenoberfläche an einem den stangenseitigen Zylinderraum abschliessenden Zylinderkopf geführt ist, mit zumindest einer, den kolbenstangenseitigen Zylinderraum von der Umgebung der Zylindereinheit zwischen der Stangenoberfläche und dem Zylinderkopf mittels eines rotationssymmetrischen Dichtunginnenmantels abdichtenden, in diesem angeordneten Stangendichtung und mit zumindest einer den kolbenstangenseitigen Zylinderraum und den von dem Zylinderboden und dem Kolben (8) gebildeten Zylinderraum zwischen dessen Innenmantel (7) und dem Aussenmantel (9) des Kolbens (8) mittels eines rotationssymmetrischen Dichtungsaussenmantels (162) abdichtenden, in dem Kolben (8) angeordneten Kolbendichtung (161) bekannt, die sich dadurch auszeichnet, dass die Stangen- und/oder die Kolbendichtung (161) zumindest bereichsweise auf ihrem Dichtungsinnen- bzw. Dichtungsaussenmantel (163) eine von dem Mantel eines senkrechten Kreiszylinders abweichende Form unter Bildung eines konvergierenden Spaltes (165) bezüglich der Stangenoberfläche bzw. des Innenmantels (7) des Zylinderrohrs aufweist.

Figure imgaf001
It is a hydraulic cylinder unit with an inner jacket having a cylinder tube guided on this, having an outer shell piston (8), with a connected thereto piston rod, the rod surface is guided on a rod-side cylinder chamber final cylinder head, with at least one, the piston rod side cylinder chamber from the vicinity of the cylinder unit between the rod surface and the cylinder head by means of a rotationally symmetrical sealing inner jacket sealing, arranged in this rod seal and with at least one piston rod side cylinder space and the cylinder bottom and the piston (8) formed between the cylinder inner space (7) and the outer shell (9) of the piston (8) by means of a rotationally symmetrical Dichtungsaussenmantels (162) sealing, in the piston (8) arranged piston seal (161) is known, which is characterized in that the rod and / or the piston Seal (161) at least partially on its Dichtungsinnen- or Dichtungsaussenmantel (163) has a deviating from the shell of a vertical circular cylinder shape forming a converging gap (165) with respect to the rod surface and the inner shell (7) of the cylinder tube.
Figure imgaf001
EP05027904.1A 2005-04-20 2005-12-20 Hydraulic actuator Active EP1715194B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005018442A DE102005018442A1 (en) 2005-04-20 2005-04-20 Hydraulic cylinder unit

Publications (3)

Publication Number Publication Date
EP1715194A2 EP1715194A2 (en) 2006-10-25
EP1715194A3 true EP1715194A3 (en) 2008-05-21
EP1715194B1 EP1715194B1 (en) 2014-06-04

Family

ID=36607376

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05027904.1A Active EP1715194B1 (en) 2005-04-20 2005-12-20 Hydraulic actuator

Country Status (3)

Country Link
US (1) US7762177B2 (en)
EP (1) EP1715194B1 (en)
DE (1) DE102005018442A1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4414966B2 (en) * 2006-01-16 2010-02-17 Ｎｏｋ株式会社 High pressure fuel pump and sealing system for high pressure fuel pump
US7607383B2 (en) * 2007-05-01 2009-10-27 Nagel Robert W System for backup rod seal for hydraulic cylinder
DE102009021170A1 (en) * 2009-05-13 2010-12-16 Compart Compressor Technology Gmbh Cylinder and piston rod seal of a linear compressor
US8985591B2 (en) * 2010-03-04 2015-03-24 Nok Corporation Sealing apparatus
DE102011119181A1 (en) 2011-11-23 2013-05-23 Robert Bosch Gmbh Cylinders, in particular hydraulic cylinders for the deep sea
US10330187B2 (en) * 2014-04-11 2019-06-25 Eaton Corporation Hydraulic control unit for a limited slip differential
JP2016080115A (en) * 2014-10-21 2016-05-16 株式会社鷺宮製作所 Fluid control valve
US9702382B2 (en) * 2014-12-16 2017-07-11 World Friendship Co., Ltd. Oil hydraulic cylinder and spindle thereof
KR20180110069A (en) 2016-02-23 2018-10-08 이턴 인텔리전트 파워 리미티드 Hydraulic control unit with charging port
FR3054277B1 (en) * 2016-07-19 2018-07-13 Airbus Helicopters RESONATOR, AND AIRCRAFT PROVIDED WITH THIS RESONATOR
US10272891B2 (en) * 2016-07-28 2019-04-30 Kelsey-Hayes Company Compliant torque coupler for a dual acting plunger assembly of a vehicle brake system
EP3290719B1 (en) * 2016-08-31 2019-07-17 Goodrich Actuation Systems SAS Seal arrangement for an actuator
DE102017204810A1 (en) * 2017-03-22 2018-09-27 Robert Bosch Gmbh Fluid cylinder with improved sealing element and manufacturing method therefor
DE102021111383A1 (en) 2021-05-03 2022-11-03 Elringklinger Ag sealing arrangement
CN113494610B (en) * 2021-07-08 2023-06-27 西华大学 Floating ring structure with damping support and mechanical sealing device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2349170A (en) * 1942-01-23 1944-05-16 Woodling George V Sealing device
US4566703A (en) * 1981-04-24 1986-01-28 Microdot Incorporated Seal assembly
DE19526783A1 (en) * 1995-07-21 1997-01-23 Amtec Spannhydraulik Gmbh Cylinder and piston unit
DE19717652A1 (en) * 1996-04-27 1997-11-27 Tokico Ltd Vehicle suspension shock absorbing cylinder
US20040164496A1 (en) * 2001-06-04 2004-08-26 Masatoshi Okada Sealing device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2325000B2 (en) * 1973-05-17 1978-04-13 Busak & Luyken Gmbh & Co SEAL FOR HYDRAULIC PISTON OR PISTON ROD

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2349170A (en) * 1942-01-23 1944-05-16 Woodling George V Sealing device
US4566703A (en) * 1981-04-24 1986-01-28 Microdot Incorporated Seal assembly
DE19526783A1 (en) * 1995-07-21 1997-01-23 Amtec Spannhydraulik Gmbh Cylinder and piston unit
DE19717652A1 (en) * 1996-04-27 1997-11-27 Tokico Ltd Vehicle suspension shock absorbing cylinder
US20040164496A1 (en) * 2001-06-04 2004-08-26 Masatoshi Okada Sealing device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Simrit Catalogue, Edition 2005", 15 April 2005, FREUDENBERG SIMRIT KG, WEINHEIM, GERMANY, XP002475214 *

Also Published As

Publication number Publication date
DE102005018442A1 (en) 2006-10-26
EP1715194B1 (en) 2014-06-04
US20060272498A1 (en) 2006-12-07
US7762177B2 (en) 2010-07-27
EP1715194A2 (en) 2006-10-25

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