EP1918592A1 - Joint d'étanchéité avec amortisseur de fin de course, fond avec joint d'étanchéité et vérin pneumatique avec fond et joint d'étanchéité - Google Patents

Joint d'étanchéité avec amortisseur de fin de course, fond avec joint d'étanchéité et vérin pneumatique avec fond et joint d'étanchéité Download PDF

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Publication number
EP1918592A1
EP1918592A1 EP06022912A EP06022912A EP1918592A1 EP 1918592 A1 EP1918592 A1 EP 1918592A1 EP 06022912 A EP06022912 A EP 06022912A EP 06022912 A EP06022912 A EP 06022912A EP 1918592 A1 EP1918592 A1 EP 1918592A1
Authority
EP
European Patent Office
Prior art keywords
sealing
sealing ring
ring according
cylinder tube
piston
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
EP06022912A
Other languages
German (de)
English (en)
Other versions
EP1918592B2 (fr
EP1918592B1 (fr
Inventor
Gonzalo Barillas
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.)
Carl Freudenberg KG
Original Assignee
Carl Freudenberg KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=37891698&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1918592(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Carl Freudenberg KG filed Critical Carl Freudenberg KG
Priority to EP06022912.7A priority Critical patent/EP1918592B2/fr
Priority to AT06022912T priority patent/ATE484682T1/de
Priority to DE502006008098T priority patent/DE502006008098D1/de
Priority to TW096136999A priority patent/TW200837297A/zh
Priority to US11/982,158 priority patent/US7866252B2/en
Priority to JP2007286928A priority patent/JP4847431B2/ja
Publication of EP1918592A1 publication Critical patent/EP1918592A1/fr
Publication of EP1918592B1 publication Critical patent/EP1918592B1/fr
Application granted granted Critical
Priority to US12/958,859 priority patent/US8234970B2/en
Publication of EP1918592B2 publication Critical patent/EP1918592B2/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • F15B15/223—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having a piston with a piston extension or piston recess which completely seals the main fluid outlet as the piston approaches its end position
    • 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
    • F15B15/1438—Cylinder to end cap assemblies
    • F15B15/1442—End cap sealings

Definitions

  • the invention relates to a sealing ring, a cover with a sealing ring and a pneumatic cylinder with a cover and a sealing ring.
  • Sealing rings that are used in pneumatic cylinders for application and seal end caps against the cylinder tube of the pneumatic cylinder, are well known, for example from the EP 1 447 571 B1 .
  • the sealing rings which seal the frontal cover in each case with respect to the cylinder tube, are formed by conventional O-rings.
  • the piston has the front side on both sides in each case a dynamically stressed seal, for mutual sealing of the acted upon by a pressure medium spaces.
  • At least partially iron metallic stop element is provided, which is fixed in a piston near basic position by the magnetic force of at least one permanent magnet on the piston and which in a piston remote working position for cushioning in the respective adjacent Protruding pressure chamber, wherein an externally arranged on the cylinder housing adjustable magnetic element for generating a relative to the magnetic field of the permanent magnet substantially inverted magnetic field is provided to achieve a change in position of the stop element from the basic position to the working position when the piston shortly before reaching the end position Magnetic element happens.
  • the previously known pneumatic cylinder has a variety of items, which is unsatisfactory in manufacturing and economic terms.
  • the invention has for its object to further develop a sealing ring, a lid with a sealing ring and a pneumatic cylinder with cover and sealing ring such that the respective parts are simple and inexpensive to produce.
  • the sealing ring should be multifunctional with a simple structure. Due to the small number of parts, the risk of assembly errors should be reduced to a minimum.
  • a sealing ring comprising a damping buffer for a piston acted upon by a pressure medium, which is axially reciprocable in a cylinder tube and at least one static seal for sealing the cylinder tube against a front side connected to the cylinder tube cover and a dynamic Seal with at least one dynamically stressed sealing lip, which during the intended use of the sealing ring to the surface to be sealed a connected to the piston and with this axially reciprocable damping pin can be applied and at least one flow-conducting connection opening which connects the axial end faces of the sealing ring.
  • a sealing ring is advantageous that it has a variety of functions.
  • the sealing ring includes the static seal, the dynamic seal, a dynamic limit stop which also affects the function of the end cushioning and also the flow-conducting connection opening, which connects the pressurized space inside the cylinder tube with the throttle bore in the cylinder tube.
  • the sealing ring is integrally merging with each other and formed of the same material.
  • the material of the sealing ring is not the subject of the invention, be formed by a known sealing material and can thereby be adapted to the particular circumstances of the application,
  • the damping buffer, the static seal and the dynamic seal may be integral with each other and formed of the same material. By combining in one component, the risk of assembly errors is kept to a minimum.
  • the static seal may be formed bead-shaped and be snapped into a congruently formed undercut of the lid.
  • the static seal and the lid are thus captive connected to each other and form a preassembled unit that can be easily installed.
  • the sealing lip may comprise a first sealing edge, wherein the first sealing edge is sealingly applied to the cover when the sealing lip is applied to the sealing lip.
  • the sealing of the sealing edge on the cover is required that builds up a sufficiently high pressure within the space to be sealed for the cushioning and then the piston moves damped in its final position until it rests against the damping buffer.
  • the sealing lip may comprise a second sealing edge which is sealingly applied to the cover when the sealing lip is applied to the sealing lip, wherein the second sealing edge of the first sealing edge is connected upstream in the direction of the pressurized cylinder tube.
  • the first sealing edge may be enclosed at a radial distance on the outside of the second sealing edge.
  • the sealing edges can limit an axially opposite the piston open, C-shaped groove.
  • the sealing lip may be bulged axially in the direction of the piston.
  • This lip design has a pressure-activating effect. The pressure-facing portion of the seal and the lid can be carried out so that no gap extrusion can occur.
  • connection opening may comprise at least one bore arranged on the front side on the circumference and, on the other hand, an annular channel on the face side, which can be connected in a flow-conducting manner to a throttle bore in the cylinder tube.
  • the connection opening within the sealing ring can be formed immediately with the production of the sealing ring, so that it no longer requires complicated, subsequent process steps for the preparation of the connection opening.
  • the end faces of the sealing ring can be connected by a ventilation opening, wherein the ventilation opening connects the cylinder tube and the cylinder tube facing side of the second sealing edge in a flow-conducting manner.
  • the sealing lip is acted upon by the overpressure to be sealed so that the pressure on both sealing edges compensates and create these sealing and without risk of lifting on the surfaces to be sealed by damping pin and cover.
  • the medium that is sealed is air.
  • the invention relates to a cover for a pneumatic cylinder, which is connected to a sealing ring, as described above, and forms with this a preassemblable unit.
  • the undercut in the cover may be formed by a radially outwardly open groove in which the bead-shaped static seal is sealingly arranged.
  • the invention relates to a pneumatic cylinder, comprising at least one front-side cover with a sealing ring, in each case as described above.
  • Figures 1 to 3 show the sealing ring according to the invention, the lid according to the invention and the pneumatic cylinder according to the invention in different operating conditions.
  • FIG. 1 Another embodiment is shown in FIG. 1
  • a section of a pneumatic cylinder is shown schematically. Due to the inventive design of the Sealing ring consists of the pneumatic cylinder only a few parts, which is advantageous in manufacturing technology and economic terms. The risk of assembly errors is reduced by the low-part construction.
  • the sealing ring is multifunctional and comprises a damping buffer 1, which is touched by the piston 2 when it is in its end position (FIG. 3).
  • the sealing ring has a static seal 4, with which the front side of the pneumatic cylinder arranged cover 5 is sealed relative to the cylinder tube 3.
  • the sealing ring has a dynamic seal 6 with a dynamically stressed sealing lip 7, which can be applied to the surface 8 of the damping pin 9 to be sealed (FIGS. 2 and 3).
  • the sealing ring has a flow-conducting connection opening 10 which connects the end faces 11, 12 of the sealing ring, wherein the connection opening 10 in the embodiment shown here consists of a bore 16, which the piston 2 axially facing end face 11 of the sealing ring with an annular channel 17th connects, which is arranged on the cover 5 facing the end face 12 and is flow-conducting with the throttle bore 18 in communication.
  • Fig. 1 the piston 2 and the damping pin 9 are shown in a position shortly before the onset of cushioning. At the end of the stroke of the damping pin 9 dives into the dynamic seal 6 with its sealing lip 7, thereby closing off the remaining pressure chamber to be vented, which only via the connection opening 10, which consists of the bore 16 and the annular channel 17, and via the throttle bore 18 of the pneumatic cylinder can be relaxed.
  • connection opening 10 can be given, for example, by the fact that the bore 16, as described above, forms part of the sealing ring, the annular channel 17 but not in the sealing ring but in the lid 5 is located.
  • Such a design is significantly more complicated compared to the described as advantageous, since it requires a machining of the cover 5 for producing an annular channel or a precise shaping of the lid.
  • the annular channel 17, preferably as part of the sealing ring, is advantageous because it does not require the sealing ring to be positioned at an exact angular position in its installation space.
  • At least one ventilation opening 19 is provided, wherein preferably a plurality of evenly distributed in the circumferential direction arranged ventilation openings can be provided.
  • the static first seal 4 is snapped by its bead-shaped holding portion positively and sealingly into a congruently formed undercut 13 of the lid 5 and forms with this a preassembled unit.
  • the dynamic seal 6 comprises the dynamically stressed sealing lip 7, which has two sealing edges 14, 15, wherein the second sealing edge 15 shuts off the flow of air through the ventilation openings 19 during retraction into the end position.
  • the second sealing edge 15 When applied to the damping pin 9 sealing lip 7, the second sealing edge 15 is sealingly applied to the lid 5, wherein the second sealing edge 15 of the first sealing edge 14 is connected upstream in the direction of the pressurized cylinder tube 3.
  • Fig. 2 the piston 2 is shown, wherein the cushioning has already used and the piston 2 moves at a significantly reduced speed in the direction of its end position shown in Fig. 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Gasket Seals (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Fluid-Damping Devices (AREA)
  • Actuator (AREA)
  • Sealing Devices (AREA)
EP06022912.7A 2006-11-03 2006-11-03 Ensemble de joint d'étanchéité avec joint, amortisseur de fin de course et fond pour un vérin pneumatique Active EP1918592B2 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP06022912.7A EP1918592B2 (fr) 2006-11-03 2006-11-03 Ensemble de joint d'étanchéité avec joint, amortisseur de fin de course et fond pour un vérin pneumatique
AT06022912T ATE484682T1 (de) 2006-11-03 2006-11-03 Dichtring mit integrierter endlagendämpfung, deckel mit dichtring und pneumatikzylinder mit deckel und dichtring
DE502006008098T DE502006008098D1 (de) 2006-11-03 2006-11-03 Dichtring mit integrierter Endlagendämpfung, Deckel mit Dichtring und Pneumatikzylinder mit Deckel und Dichtring
TW096136999A TW200837297A (en) 2006-11-03 2007-10-03 Sealing ring, cap with sealing ring and pneumatic cylinder with cap and sealing ring
US11/982,158 US7866252B2 (en) 2006-11-03 2007-11-01 Gasket, cover with gasket, and pneumatic cylinder with cover and gasket
JP2007286928A JP4847431B2 (ja) 2006-11-03 2007-11-05 シールリング、シールリングを備えたキャップ並びに、キャップ及びシールリングを備えた空気圧シリンダ
US12/958,859 US8234970B2 (en) 2006-11-03 2010-12-02 Gasket, cover with gasket, and pneumatic cylinder with cover and gasket

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06022912.7A EP1918592B2 (fr) 2006-11-03 2006-11-03 Ensemble de joint d'étanchéité avec joint, amortisseur de fin de course et fond pour un vérin pneumatique

Publications (3)

Publication Number Publication Date
EP1918592A1 true EP1918592A1 (fr) 2008-05-07
EP1918592B1 EP1918592B1 (fr) 2010-10-13
EP1918592B2 EP1918592B2 (fr) 2014-01-01

Family

ID=37891698

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06022912.7A Active EP1918592B2 (fr) 2006-11-03 2006-11-03 Ensemble de joint d'étanchéité avec joint, amortisseur de fin de course et fond pour un vérin pneumatique

Country Status (6)

Country Link
US (2) US7866252B2 (fr)
EP (1) EP1918592B2 (fr)
JP (1) JP4847431B2 (fr)
AT (1) ATE484682T1 (fr)
DE (1) DE502006008098D1 (fr)
TW (1) TW200837297A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009014817A1 (de) 2009-03-25 2010-09-30 Festo Ag & Co. Kg Fluidbetätigter Linearantrieb
DE102012103595A1 (de) 2012-04-24 2013-10-24 Parker Hannifin Manufacturing Germany GmbH & Co. KG Dichtungsanordnung für eine Zylinderabdichteinrichtung

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1401377B1 (it) * 2010-08-09 2013-07-18 Skf Ab Unita' di guida e tenuta, in particolare per uno stelo di un ammortizzatore monotubo e complesso anulare di tenuta per la stessa
TWI401376B (zh) * 2011-01-21 2013-07-11 Chime Ball Technology Co Ltd Piston airtight device
JP5793346B2 (ja) * 2011-05-31 2015-10-14 日立オートモティブシステムズ株式会社 シリンダ装置
JP6570544B2 (ja) * 2014-05-19 2019-09-04 マイクロフレックス テクノロジーズ エルエルシー シール面の延長部を備えたリングシール
CN114087360A (zh) * 2021-10-18 2022-02-25 东风汽车集团股份有限公司 一种封堵装置和零件

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2658872A1 (fr) * 1990-02-27 1991-08-30 Joucomatic Sa Perfectionnements apportes aux verins pour fluide sous pression.
EP1447571A1 (fr) 2003-02-12 2004-08-18 Rexroth Mecman GmbH Cylindre à amortissement de fin de course réglable

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1100907B (de) † 1958-01-24 1961-03-02 Cie Parisienne D Outil A Air C Druckmittelbetaetigter Hebebock
BE793149A (fr) * 1971-12-27 1973-06-21 Westinghouse Bremsen Apparate Dispositif d'amortissement de fin de course
JPS57205403A (en) 1981-06-12 1982-12-16 Hitachi Ltd Formation of polymer film
JPS6128086Y2 (fr) † 1981-06-24 1986-08-21
DE29501243U1 (de) † 1995-01-27 1995-04-20 Festo Kg, 73734 Esslingen Arbeitszylinder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2658872A1 (fr) * 1990-02-27 1991-08-30 Joucomatic Sa Perfectionnements apportes aux verins pour fluide sous pression.
EP1447571A1 (fr) 2003-02-12 2004-08-18 Rexroth Mecman GmbH Cylindre à amortissement de fin de course réglable
EP1447571B1 (fr) * 2003-02-12 2005-09-07 Rexroth Mecman GmbH Cylindre à amortissement de fin de course réglable

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009014817A1 (de) 2009-03-25 2010-09-30 Festo Ag & Co. Kg Fluidbetätigter Linearantrieb
DE102009014817B4 (de) * 2009-03-25 2011-07-21 FESTO AG & Co. KG, 73734 Fluidbetätigter Linearantrieb
DE102012103595A1 (de) 2012-04-24 2013-10-24 Parker Hannifin Manufacturing Germany GmbH & Co. KG Dichtungsanordnung für eine Zylinderabdichteinrichtung
EP2657541A2 (fr) 2012-04-24 2013-10-30 Parker Hannifin Manufacturing Germany GmbH & Co. KG Agencement d'étanchéité pour un système d'étanchéification de cylindre
DE102012103595B4 (de) * 2012-04-24 2015-10-15 Parker Hannifin Manufacturing Germany GmbH & Co. KG Dichtungsanordnung für eine Zylinderabdichteinrichtung eines Pneumatikzylinders

Also Published As

Publication number Publication date
US7866252B2 (en) 2011-01-11
ATE484682T1 (de) 2010-10-15
DE502006008098D1 (de) 2010-11-25
EP1918592B2 (fr) 2014-01-01
US20110074114A1 (en) 2011-03-31
JP2008116050A (ja) 2008-05-22
TW200837297A (en) 2008-09-16
EP1918592B1 (fr) 2010-10-13
JP4847431B2 (ja) 2011-12-28
US8234970B2 (en) 2012-08-07
US20080122187A1 (en) 2008-05-29

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