EP0116226A2 - Dispositif de manoeuvre pour portes commandé par compression - Google Patents

Dispositif de manoeuvre pour portes commandé par compression Download PDF

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Publication number
EP0116226A2
EP0116226A2 EP83307862A EP83307862A EP0116226A2 EP 0116226 A2 EP0116226 A2 EP 0116226A2 EP 83307862 A EP83307862 A EP 83307862A EP 83307862 A EP83307862 A EP 83307862A EP 0116226 A2 EP0116226 A2 EP 0116226A2
Authority
EP
European Patent Office
Prior art keywords
pressure
cylinder
piston
valve
door
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.)
Withdrawn
Application number
EP83307862A
Other languages
German (de)
English (en)
Other versions
EP0116226A3 (fr
Inventor
George Charles Viner
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.)
Siemens Mobility Ltd
Original Assignee
Westinghouse Brake and Signal Co Ltd
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 Westinghouse Brake and Signal Co Ltd filed Critical Westinghouse Brake and Signal Co Ltd
Publication of EP0116226A2 publication Critical patent/EP0116226A2/fr
Publication of EP0116226A3 publication Critical patent/EP0116226A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/50—Power-operated mechanisms for wings using fluid-pressure actuators
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/132—Doors

Definitions

  • the invention relates to a pressure operated door actuator.
  • Pneumatic and hydraulic pressure operated actuators are used extensively to open and close vehicle doors. Pressures on opposite sides of a actuator piston are varied by means of control valves to move the piston which is connected to a door mechanism. Due to the interplay of pressures caused by these control valves in known actuator arrangements if a door is obstructed during a closing movement and excessive pressure drop - occurs on one side of the piston there is an inherent tendency for the door to slam when the obstruction is removed.
  • the object of the present invention is to provide an arrangement which obviates this tendency for a pressure operated door actuator to slam shut a door following release from a temporary obstruction.
  • a pressure operated door actuator comprising a piston and cylinder arrangement in which piston movement is determined by pressure difference between opposite ends of the cylinder, valve means leading from a port to one end of the cylinder to admit pressure for a door opening stroke and to exhaust pressure for a door closing stroke and, means for halting exhaustion of pressure in the event of piston movement ceasing due to obstruction of a closing door.
  • the means for halting exhaustion of pressure comprises means for reseating the valve means, and in one embodiment there is provided valve lifting means responsive to excess cylinder pressure over port pressure to unseat said valve means during the exhaust stroke and to reseat the valve means if said excess falls below a predetermined value.
  • the value of said excess pressure may be determined by a spring.
  • the pneumatic door actuator comprises a piston 1 reciprocally slidable in a cylinder 2. Either end of the cylinder is closed by an end cap 3 and 4 which includes ports for admitting or exhausting pressure from the respective end of the cylinder 2.
  • the motion of the piston 1 is transmitted to the door (not shown) by means of a piston rod 5 which extends through and is slidably mounted within the end cap 4.
  • the piston 1 is shown in the door closed position; to open the door pressure is admitted to the left hand end of cylinder 2 through valve means in end cap 3 while the right hand end of the cylinder 2 is vented through the valve means in end cap 4.
  • the piston 1 therefore travels towards the right carrying with it piston rod 5.
  • the door is closed by an opposite sequence of events in which the left hand end of the cylinder is vented through the valve in end cap 3 and pressure is admitted to the right hand end of the cylinder 2 through the valve means and end cap 4 thus, causing the piston 1 to now move leftwards, in the drawing, again carrying with it piston rod 5.
  • the anti-slam mechanism of Fig. 2 is housed within the end cap 3 at the,left hand end of cylinder 2 in Fig. 1.
  • the arrangement comprises a pressure inlet/exhaust port 10 connected via a passageway 11 to a chamber 12 which is closed at one end by a piston 13 and at its other by a ball valve generally indicated by reference 14.
  • the valve means 14 communicates via a further chamber 15 and a duct 16 to the left hand end of the cylinder 2 through a port 17 drilled in the face of end cap 3.
  • the ball valve 14 comprises a ball valve member 20 which is urged against a valve seat 21 by a bias spring 22.
  • the piston 13 has a limited degree of axial movement within the chamber 12 and is normally biassed towards the right by a further spring 23.
  • the piston carries a leftward extending probe 24 which acts as a valve lifting means to unseat the ball valve member 20 of ball valve 14 when piston 13 is towards the left hand end of its movement.
  • the right hand end of piston 13 also carries a member 25 which extends through end cap 3 for a short distance into cylinder 2 for abutment by a further probe 26 carried on the piston 1.
  • piston 1 will also cease to move and pressure on the vented side of cylinder 2 will continue to fall until the spring 23 overcomes the pressure on the piston 13 moving it rightwards in chamber 12 to release ball valve member 20 permitting it to reseat.
  • pressure in the left hand end of cylinder 2 will be retained for as long as movement of piston 1 is prevented.
  • a probe 26 carried by piston 1 is arranged to abut extension member 25 of piston 13 towards the end of the stroke thereby mechanically holding ball valve 14 open to permit remaining pressure on that side of the piston 1 to leak away.
  • the embodiment illustrated is also provided with a damping valve 27 which is resiliently mounted on the piston 1 so that at an intermediate stage of the movement it comes to rest against the face of end cap 3 and closes port 17 leading to duct 16 by which route exhausting pressure escapes into chamber 15 leading to ball valve 14.
  • a damping valve 27 which is resiliently mounted on the piston 1 so that at an intermediate stage of the movement it comes to rest against the face of end cap 3 and closes port 17 leading to duct 16 by which route exhausting pressure escapes into chamber 15 leading to ball valve 14.
  • an alternative path of smaller cross-section is provided via an axial port 28 drilled in the extension 25 of the piston 13 into a section 29 of the chamber 12 formed by an annular recess 29 in the piston 13, a peripheral port 30 in the wall of section 28 and, through an adjustable cushioning valve 31 and a further duct 32 into the chamber 15.

Landscapes

  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Actuator (AREA)
EP83307862A 1983-01-11 1983-12-22 Dispositif de manoeuvre pour portes commandé par compression Withdrawn EP0116226A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8300675 1983-01-11
GB838300675A GB8300675D0 (en) 1983-01-11 1983-01-11 Pressure operated door actuator

Publications (2)

Publication Number Publication Date
EP0116226A2 true EP0116226A2 (fr) 1984-08-22
EP0116226A3 EP0116226A3 (fr) 1985-05-29

Family

ID=10536187

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83307862A Withdrawn EP0116226A3 (fr) 1983-01-11 1983-12-22 Dispositif de manoeuvre pour portes commandé par compression

Country Status (4)

Country Link
EP (1) EP0116226A3 (fr)
DK (1) DK9784A (fr)
GB (2) GB8300675D0 (fr)
ZA (1) ZA839506B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2385900A (en) * 2001-12-14 2003-09-03 Eurocopter Deutschland Emergency opening actuation cylinder with venting into a collecting chamber
DE4323151C5 (de) * 1993-07-10 2005-12-22 Geze Gmbh Drehtürantrieb

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230203870A1 (en) * 2017-02-02 2023-06-29 In & Tec S.R.L. Linear actuator, as well as closing/opening system that includes such actuator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB299363A (en) * 1927-10-24 1929-11-07 Nat Pneumatic Co Improvements in fluid pressure engines for operating and controlling doors
DE1708314A1 (de) * 1967-10-17 1971-05-19 Bosch Gmbh Robert Bewegungseinrichtung fuer Tueren und aehnliche Teile
FR2449215A1 (fr) * 1979-02-16 1980-09-12 Rousset Noelle Verin hydraulique a double effet, notamment pour la commande d'un portail
GB2054734A (en) * 1979-06-27 1981-02-18 Wabco Fahrzeugbremsen Gmbh Pneumatic door actuators

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1584037B1 (de) * 1963-10-25 1969-10-23 Haegglund & Soener Ab Sicherheitsschalteinrichtung fuer hydraulisch betaetigte Kolben-Zylinder-Antriebe von Tueren,Luken od.dgl.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB299363A (en) * 1927-10-24 1929-11-07 Nat Pneumatic Co Improvements in fluid pressure engines for operating and controlling doors
DE1708314A1 (de) * 1967-10-17 1971-05-19 Bosch Gmbh Robert Bewegungseinrichtung fuer Tueren und aehnliche Teile
FR2449215A1 (fr) * 1979-02-16 1980-09-12 Rousset Noelle Verin hydraulique a double effet, notamment pour la commande d'un portail
GB2054734A (en) * 1979-06-27 1981-02-18 Wabco Fahrzeugbremsen Gmbh Pneumatic door actuators

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4323151C5 (de) * 1993-07-10 2005-12-22 Geze Gmbh Drehtürantrieb
GB2385900A (en) * 2001-12-14 2003-09-03 Eurocopter Deutschland Emergency opening actuation cylinder with venting into a collecting chamber
US6685139B2 (en) 2001-12-14 2004-02-03 Eurocopter Deutschland Gmbh Emergency opening cylinder of a passenger door for an airplane, a door system and a method of modifying a door system
GB2385900B (en) * 2001-12-14 2005-03-23 Eurocopter Deutschland Emergency opening cylinder of a passenger door

Also Published As

Publication number Publication date
ZA839506B (en) 1984-08-29
EP0116226A3 (fr) 1985-05-29
DK9784D0 (da) 1984-01-10
GB8300675D0 (en) 1983-02-09
GB2134175A (en) 1984-08-08
DK9784A (da) 1984-07-12
GB8334319D0 (en) 1984-02-01

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19860130

RIN1 Information on inventor provided before grant (corrected)

Inventor name: VINER, GEORGE CHARLES