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EP0255530B1 - Pneumatic or hydraulic drive for opening and closing doors - Google Patents

Pneumatic or hydraulic drive for opening and closing doors Download PDF

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Publication number
EP0255530B1
EP0255530B1 EP87900774A EP87900774A EP0255530B1 EP 0255530 B1 EP0255530 B1 EP 0255530B1 EP 87900774 A EP87900774 A EP 87900774A EP 87900774 A EP87900774 A EP 87900774A EP 0255530 B1 EP0255530 B1 EP 0255530B1
Authority
EP
European Patent Office
Prior art keywords
piston
pct
door
pressure
movement
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.)
Expired - Lifetime
Application number
EP87900774A
Other languages
German (de)
French (fr)
Other versions
EP0255530A1 (en
Inventor
Martin Fink
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.)
IFE Industrie-Einrichtungen Fertigungs-Aktiengesellschaft
Original Assignee
IFE Industrie-Einrichtungen Fertigungs-Aktiengesellschaft
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Publication date
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Publication of EP0255530A1 publication Critical patent/EP0255530A1/en
Application granted granted Critical
Publication of EP0255530B1 publication Critical patent/EP0255530B1/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D19/00—Door arrangements specially adapted for rail vehicles
    • B61D19/02—Door arrangements specially adapted for rail vehicles for carriages
    • B61D19/026—Safety devices for preventing passengers from being injured by movements of doors or variations in air pressure
    • 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
    • E05F15/40—Safety devices, e.g. detection of obstructions or end positions
    • E05F15/49—Safety devices, e.g. detection of obstructions or end positions specially adapted for mechanisms operated by fluid pressure, e.g. detection by monitoring transmitted fluid pressure
    • 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
    • E05F15/53—Power-operated mechanisms for wings using fluid-pressure actuators for swinging wings
    • 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
    • E05F15/53—Power-operated mechanisms for wings using fluid-pressure actuators for swinging wings
    • E05F15/54—Power-operated mechanisms for wings using fluid-pressure actuators for swinging wings operated by linear actuators acting on a helical track coaxial with the swinging axis
    • 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
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/218—Holders
    • E05Y2201/22—Locks
    • 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
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/23—Actuation thereof
    • E05Y2201/244—Actuation thereof by manual operation
    • 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
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/644—Flexible elongated pulling elements
    • E05Y2201/654—Cables
    • 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
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/25—Emergency conditions
    • 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
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/51—Application of doors, windows, wings or fittings thereof for vehicles for railway cars or mass transit vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/11—Tripping mechanism
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20636—Detents
    • Y10T74/20648—Interrelated lever release

Definitions

  • DE-A-31 12 646 discloses a door drive in which this fuse is provided within the working cylinder in direct cooperation with the piston. These designs require a support column that can be raised and lowered.
  • this is achieved in that the locking lever engages under the action of a further spring in the closed position of the door on a part connected directly to the piston rod from the drive cylinder to the outside, the movement of which is derived from the axial movement of the piston, and the piston secures in its closed end position.
  • an angular locking helix 10 is pivotally mounted on a bracket 9, which engages under a roller 11 in its locking position, not shown, which is supported coaxially with the pair of rollers 7 on the piston rod 6.
  • a piston rod 12 of a piston 13 is articulated on the locking lever 10 slides in a working cylinder 14 and is pressurized on one side with the same pressure medium as the double piston 5.
  • the working cylinder 4 can be set to open or close by means of the valve 22.
  • the double-acting piston 5 In the closed position, the double-acting piston 5 is in its upper end position and is held in this position by the pressure medium.
  • the working cylinder 14 is always connected to the pressure line, so that the piston 13 is in its end position compressing the spring 15, in which it holds the locking lever 10 out of its locked position.
  • the hand lever 27, which represents an emergency device with the Bowden cable 17 and the valve 26, is in the position in which the valve 26 connects the pressure source 23 to the valve 22. If there is a leak at any point in the lines that are under pressure and the pressure therefore drops, the first step is under the influence of the spring 15 of the piston 13 pressed into the working cylinder 4, whereby the leakage amount is initially compensated.
  • the locking lever 10 was brought into its locked position by the piston rod 12, in which it engages under the roller 11 (FIG. 2). If pressure medium escapes further, the working piston 4 is depressurized. However, the door cannot be opened by itself or under load. However, opening the door is temporarily possible if the Bowden cable 17 is actuated by means of the hand lever 27. When the lever 27 is released, the locking lever 10 returns to its locking position.
  • the hand lever 27 is actuated, whereby the pressure line connects the pressure line to the return line 24 and at the same time the Bowden cable is actuated, so that the locking lever 10 is held in its open position, although not only the working cylinder 4 but also the working cylinder 14 are depressurized.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

PCT No. PCT/AT87/00002 Sec. 371 Date Nov. 9, 1987 Sec. 102(e) Date Nov. 9, 1987 PCT Filed Jan. 20, 1987 PCT Pub. No. WO87/04483 PCT Pub. Date Jul. 30, 1987.The invention is directed to a penumatic or hydraulic drive for opening and closing of doors, in which the linear motion of a double-acting piston 5 driven by a pressure medium is converted into a rotary motion of a spindle 2 through a piston rod 6 and a helical gear box 3. Herein a blocking lever 10 supported in a stationary manner is provided, which in the closed position of the door engages under the action of a spring 18 at a part 11 connected with a piston 5, wherein said blocking lever secures the piston in its end position and is held in its open position counter to the force of an additional spring 15 by a power cylinder 14 acted upon by the pressure means.

Description

Die Erfindung betrifft einen pneumatischen oder hydraulischen Antrieb zum Öffnen und Schließen von Türen, bei welchem die Linearbewegung eines von einem Druckmittel angetriebenen, doppelt wirkenden Kolbens über eine Kolbenstange und ein Schraubgetriebe in eine Drehbewegung einer Spindel umgesetzt wird, wobei ein ortsfest gelagerter,mit einem handbetätigbaren Bowdenzug verbundenen Sperrhebel vorgesehen ist, welcher in seiner Sperrstellung die Geschlossenstellung der Tür sichert und der mittels eines vom Druckmittel unabhängig vom Antriebszylinder beaufschlagten Arbeitszylinders entgegen der Kraft einer Feder in seiner Offenstellung gehalten ist und bei Druckabfall im Antriebszylinder in seine Sperrstellung zurückkehrt.The invention relates to a pneumatic or hydraulic drive for opening and closing doors, in which the linear movement of a double-acting piston driven by a pressure medium is converted via a piston rod and a screw gear into a rotary movement of a spindle, with a stationary, with a manually operated Bowden cable connected locking lever is provided, which secures the closed position of the door in its locked position and which is held in its open position against the force of a spring by means of a working cylinder acted upon by the pressure medium independently of the drive cylinder and returns to its locked position when the pressure in the drive cylinder drops.

Bei dem durch die DE-B 28 05 639 bekanntgewordenen Drehantrieb dieser Art untergreift der ortsfest gelagerte Sperrhebel eine mit der Drehsäule fest verbundene Scheibe, um das Türblatt auch bei Druckverlust im Arbeitsmedium in seiner Lage zu sichern.In the rotary drive of this type, which became known from DE-B 28 05 639, the stationary locking lever engages under a disk which is firmly connected to the rotating column, in order to secure the position of the door leaf even in the event of pressure loss in the working medium.

Die DE-A-31 12 646 offenbart einen Türantrieb, bei dem diese Sicherung innerhalb des Arbeitszylinders im unmittelbaren Zusammenwirken mit dem Kolben vorgesehen ist. Diese Bauarten setzen eine heb- und senkbare Tragsäule voraus.DE-A-31 12 646 discloses a door drive in which this fuse is provided within the working cylinder in direct cooperation with the piston. These designs require a support column that can be raised and lowered.

Die Erfindung bezweckt eine Einrichtung zu schaffen, welche bei Türantrieben, bei denen die Tragsäule keine Heb- und Senkbewegung ausführt, die Öffnungsbewegung der Türe bei Druckabfall sperrt.The invention aims to provide a device which, in the case of door drives in which the support column does not carry out a lifting and lowering movement, blocks the opening movement of the door when the pressure drops.

Erfindungsgemäß wird dies dadurch erreicht, daß der Sperrhebel unter der Wirkung einer weiteren Feder in Geschlossenstellung der Tür an einem mit der Kolbenstange unmittelbar verbundenen aus dem Antriebszylinder nach außen geführten Teil, dessen Bewegung von der Axialbewegung des Kolbens abgeleitet ist, angreift und den Kolben in seiner Geschlossen-Endlage sichert.According to the invention, this is achieved in that the locking lever engages under the action of a further spring in the closed position of the door on a part connected directly to the piston rod from the drive cylinder to the outside, the movement of which is derived from the axial movement of the piston, and the piston secures in its closed end position.

Eine besonders vorteilhafte Ausgestaltung ergibt sich, wenn der Bowdenzug von einem Handhebel ausgeht, mit dem ein Dreiweghahn in der Druckleitung des Druckmittels betätigbar ist, der in der einen Endstellung des Handhebels die Druckmittelleitung mit dem Rückfluß verbindet. Dadurch ist eine Notbetätigungseinrichtung geschaffen.A particularly advantageous embodiment results if the Bowden cable starts from a hand lever with which a three-way valve in the pressure line of the pressure medium can be actuated, which connects the pressure medium line with the return flow in one end position of the hand lever. This creates an emergency operating device.

In der Zeichnung ist der Gegenstand der Erfindung in einer beispielsweisen Ausführungsform dargestellt.In the drawing, the subject matter of the invention is shown in an exemplary embodiment.

Es zeigen Fig. 1 eine Ansicht eines erfindungsgemäßen Türantriebes im Aufriß, die Fig. 2 und 3 einen Querschnitt, wobei in Fig. 2 der Sperrhebel in seiner wirksamen und in Fig. 3 in seiner unwirksamen Stellung dargestellt ist, und Fig. 4 eine Regelschaltung.1 shows a view of a door drive according to the invention in elevation, FIGS. 2 and 3 show a cross section, in FIG. 2 the locking lever being shown in its active position and in FIG. 3 in its inactive position, and FIG. 4 a control circuit .

In einer Konsole 1 ist eine Welle 2 gelagert, die mittels eines Schraubgetriebes 3 verdreht werden kann. Unterhalb des Schraubgetriebes ist ein Arbeitszylinder 4 mit einem doppeltwirkenden Kolben 5 samt Zu- und Abflüssen für das Druckmedium vorgesehen. Die Kolbenstange 6 ist mit einem Rollenpaar 7 versehen, das in Schiltzen 8 des Schraubgetriebes 3 geführt ist. Dadurch wird eine Achsialbewegung des Doppelkolbens 5 in eine Drehbewegung der Welle 2 umgewandelt, die das Räderpaar 7 mittels Achsialschlitzen umfaßt.A shaft 2 is mounted in a bracket 1 and can be rotated by means of a screw gear 3. A working cylinder 4 with a double-acting piston 5 including inflows and outflows for the pressure medium is provided below the screw gear. The piston rod 6 is provided with a pair of rollers 7, which is guided in slats 8 of the screw transmission 3. As a result, an axial movement of the double piston 5 is converted into a rotary movement of the shaft 2, which comprises the pair of wheels 7 by means of axial slots.

Ist das Ende der Schlitze 8 gegenüber der Drehachse geneigt ausgebildet, sodaß keine Selbsthemmung besteht, so besteht die Gefahr, daß bei Druckverlust der Doppelkoben 5 nicht mehr in seiner oberen Lage gesichert ist und zumindest bei Belastung der Tür einer Drehbewegung der welle 2 keinen Widerstand entgegensetzen kann. Um dies zu verindern, ist an einer Konsole 9 ein winkelförmiger Sperrhel 10 schwenkbar gelagert, der in seiner nicht dargestellten Sperrstellung eine Rolle 11 untergreift, die gleichachsig mit dem Rollenpaar 7 an der Kolbenstange 6 gelagert ist. Am Sperrhebel 10 ist eine Kolbenstange 12 eines Kolbens 13 angelenkt, der in einem Arbeitszylinder 14 gleitet und einseitig mit dem gleichen Druckmittel wie der Doppelkolben 5 beaufschlagt ist. Zwischen der einen Stirnseite des Arbeitszylinders 14 und dem Kolben 13 ist eine Druckfeder 15 eingesetzt. Der Arbeitszylinder 14 ist an einer Konsole 16 schwenkbar gelagert. Der Sperrhebel 10 ist mittels einer Welle mit einem Hebel 10a fest verbunden, an den ein Bowdenzug 17 angreift, welcher eine Verschwenkung des Sperrhebels 10 aus seiner Sperrlage heraus entgegen der Kraft einer Drehfeder 18 von Hand aus ermöglicht.Is the end of the slots 8 inclined with respect to the axis of rotation, so that there is no self-locking, there is a risk that the pressure loss of the double piston 5 is no longer secured in its upper position and at least when the door is subjected to a rotational movement of the shaft 2 no resistance can. In order to prevent this, an angular locking helix 10 is pivotally mounted on a bracket 9, which engages under a roller 11 in its locking position, not shown, which is supported coaxially with the pair of rollers 7 on the piston rod 6. A piston rod 12 of a piston 13 is articulated on the locking lever 10 slides in a working cylinder 14 and is pressurized on one side with the same pressure medium as the double piston 5. A compression spring 15 is inserted between one end of the working cylinder 14 and the piston 13. The working cylinder 14 is pivotally mounted on a bracket 16. The locking lever 10 is fixedly connected by means of a shaft to a lever 10a which is engaged by a Bowden cable 17, which enables the locking lever 10 to be pivoted out of its locked position against the force of a torsion spring 18 by hand.

Die gesamte Einrichtung ist mittels eines Topfes 19 abgedeckt.The entire device is covered by a pot 19.

Gemäß Fig. 4 ist der Arbeitszylinder 4 mittels der Leitungen 20, 21 mit einem Steuerventil 22 verbunden, das einerseits an einer Druckquelle 23 angeschlossen ist. Eine weitere Leitung 24 führt in das Druckmittelreservoir zurück. Von der Druckleitung fürht eine Zweigleitung 25 zum Arbeitszylinder 14. Weiters ist in der Druckleitung ein Ventil 26 geschaltet, das mittels eines Handhebels 27 betätigt werden kann. Es verbindet wahlweise die Druckquelle 23 mit dem Ventil 22 oder die Druckleitung mit dem Rückfluß. Am Handhebel 27 ist das eine Ende 28 des Bowdenzuges 17 befestigt.4, the working cylinder 4 is connected by means of the lines 20, 21 to a control valve 22 which, on the one hand, is connected to a pressure source 23. Another line 24 leads back into the pressure medium reservoir. A branch line 25 leads from the pressure line to the working cylinder 14. Furthermore, a valve 26 is connected in the pressure line and can be actuated by means of a hand lever 27. It optionally connects the pressure source 23 to the valve 22 or the pressure line to the reflux. One end 28 of the Bowden cable 17 is fastened to the hand lever 27.

Mittels des Ventils 22 kann der Arbeitszylinder 4 auf Öffnen oder Schließen gestellt werden. In der Geschlossenstellung befindet sich der doppeltwirkende Kolben 5 in seiner oberen Endlage und wird durch das Druckmittel in dieser Stellung gehalten. Stets ist der Arbeitszylinder 14 an der Druckleitung angeschlossen, sodaß sich der Kolben 13 in seiner die Feder 15 komprimierenden Endlage befindet, in der er den Sperrhebel 10 aus seiner Sperrlage hält. Der Handhebel 27, der mit dem Bowdenzug 17 und dem Ventil 26 eine Noteinrichtung darstellt, befindet sich in jener Lage, bei der das Ventil 26 die Druckquelle 23 mit dem Ventil 22 verbindet. Entsteht an irgendeiner Stelle der Leitungen, die unter Druck stehen, ein Leck und sinkt daher der Druck, so wird zunächst unter dem Einfluß der Feder 15 der Kolben 13 in den Arbeitszylinder 4 hineingepreßt, wodurch zunächst die Leckmenge ausgeglichen wird. Hierbei wurde von der Kolbenstange 12 der Sperrhebel 10 in dessen Sperrstellung gebracht, in der er die Rolle 11 untergreift (Fig. 2). Bei weiterem Entweichen von Druckmittel wird der Arbeitskolben 4 drucklos. Dennoch kann die Tür weder von selbst noch unter Belastung geöffnet werden. Eine Öffnung der Tür ist jedoch vorübergehend möglich, wenn mittels des Handhebels 27 der Bowdenzug 17 betätigt wird. Bei Freigabe des Hebels 27 kehrt der Sperrhebel 10 in seine Sperrstellung zurück.The working cylinder 4 can be set to open or close by means of the valve 22. In the closed position, the double-acting piston 5 is in its upper end position and is held in this position by the pressure medium. The working cylinder 14 is always connected to the pressure line, so that the piston 13 is in its end position compressing the spring 15, in which it holds the locking lever 10 out of its locked position. The hand lever 27, which represents an emergency device with the Bowden cable 17 and the valve 26, is in the position in which the valve 26 connects the pressure source 23 to the valve 22. If there is a leak at any point in the lines that are under pressure and the pressure therefore drops, the first step is under the influence of the spring 15 of the piston 13 pressed into the working cylinder 4, whereby the leakage amount is initially compensated. Here, the locking lever 10 was brought into its locked position by the piston rod 12, in which it engages under the roller 11 (FIG. 2). If pressure medium escapes further, the working piston 4 is depressurized. However, the door cannot be opened by itself or under load. However, opening the door is temporarily possible if the Bowden cable 17 is actuated by means of the hand lever 27. When the lever 27 is released, the locking lever 10 returns to its locking position.

Soll die Tür mittels der Noteinrichtung geöffnet werden, so wird der Handhebel 27 betätigt, wodurch durch das Ventil 26 dei Druckleitung mit der Rückleitung 24 verbunden und gleichzeitig der Bowdenzug betätigt wird, sodaß der Sperrhebel 10 in seiner Offenstellung gehalten wird, obwohl nicht nur der Arbeitszylinder 4 sondern auch der Arbeitszylinder 14 drucklos werden.If the door is to be opened by means of the emergency device, the hand lever 27 is actuated, whereby the pressure line connects the pressure line to the return line 24 and at the same time the Bowden cable is actuated, so that the locking lever 10 is held in its open position, although not only the working cylinder 4 but also the working cylinder 14 are depressurized.

Es ist gleichgültig, von welchem Abschnitt der Druckleitung 20 die Zweigleitung 25 ausgeht.It does not matter which section of the pressure line 20 the branch line 25 starts from.

Claims (1)

1. A pneumatic or hydraulic drive for opening and closing doors, in which the linear movement of a double-acting piston (5) driven by a pressure medium is converted to a rotary movement of a spindle (2) via a piston rod (6) and a screw gear (7, 8), a locking lever (10) being provided, which is mounted at a fixed point, is connected to a manually actuatable Bowden cable (17), and, in its locking position, secures the closed position of the door and is held in its open position against the force of a spring (15) by means of a working cylinder (14) subjected to the action of pressure medium independently of the drive cylinder and, in the event of a pressure drop in the drive cylinder, returns to its locking position, characterised in that the locking lever (10) acts, under the action of another spring (18), in the closed position of the door, on a part (11) which is directly connected to the piston rod (6) and which is led out from the drive cylinder (4) and the movement of which is derived from the axial movement of the piston (5) and secures the piston in its closed end position.
EP87900774A 1986-01-20 1987-01-20 Pneumatic or hydraulic drive for opening and closing doors Expired - Lifetime EP0255530B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0012586A AT384271B (en) 1986-01-20 1986-01-20 PNEUMATIC OR HYDRAULIC DRIVE FOR OPENING AND CLOSING DOORS
AT125/86 1986-01-20

Publications (2)

Publication Number Publication Date
EP0255530A1 EP0255530A1 (en) 1988-02-10
EP0255530B1 true EP0255530B1 (en) 1991-10-16

Family

ID=3482166

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87900774A Expired - Lifetime EP0255530B1 (en) 1986-01-20 1987-01-20 Pneumatic or hydraulic drive for opening and closing doors

Country Status (5)

Country Link
US (1) US4854223A (en)
EP (1) EP0255530B1 (en)
AT (2) AT384271B (en)
DE (1) DE3773789D1 (en)
WO (1) WO1987004483A1 (en)

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EP0426502B1 (en) * 1989-11-03 1993-08-11 Parker Hannifin (Australia) Pty Ltd Apparatus for operating a sliding door member
US6141908A (en) * 1998-08-13 2000-11-07 Westinghouse Air Brake Company Transit vehicle door system
US7210268B2 (en) * 2003-12-23 2007-05-01 Wabtec Holding Corporation Unlock mechanism for a rotary door operator
US6948765B2 (en) * 2003-12-23 2005-09-27 Westinghouse Air Brake Technologies Corporation Lock mechanism for a rotary door operator
IT1397425B1 (en) * 2008-09-25 2013-01-10 Pampolini COMMAND DEVICE FOR ROTO-TRANSLATING DOORS

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DE2433899C3 (en) * 1974-07-15 1978-06-15 Gebr. Bode & Co Vorm. Wegmann & Co, 3500 Kassel Locking device for a multi-leaf door, especially a pivot door
US4185539A (en) * 1977-03-07 1980-01-29 Andrew Stratienko Locking device for hydraulic actuator
DE2805639C2 (en) * 1978-02-10 1980-02-21 Gebr. Bode & Co, 3500 Kassel Device for securing the locking position of vehicle doors operated by rotating pillars
ATA387978A (en) * 1978-05-29 1982-08-15 Ife Gmbh ROTARY DRIVE FOR DOORS OR THE LIKE.
AT378030B (en) * 1980-04-11 1985-06-10 Ife Gmbh PNEUMATIC OR HYDRAULIC DRIVE FOR OPENING AND CLOSING DOORS
DE3104241A1 (en) * 1981-02-06 1982-08-19 Eckart GmbH & Co KG, 6490 Schlüchtern PRESSURE-OPERATED SWIVEL MOTOR
DE3112646A1 (en) * 1981-03-30 1982-11-18 Eckart GmbH & Co KG, 6490 Schlüchtern Pivoting motor actuated by pressure medium
US4545149A (en) * 1984-01-03 1985-10-08 Gebr. Bode & Co. Gmbh Device for securing the locked position of a motor-vehicle door
DE3532514C1 (en) * 1985-09-12 1987-04-23 Bode & Co Geb Drive device for a rotating column, in particular for moving pivoting door leaves on motor vehicles

Also Published As

Publication number Publication date
AT384271B (en) 1987-10-27
DE3773789D1 (en) 1991-11-21
US4854223A (en) 1989-08-08
ATA12586A (en) 1987-03-15
EP0255530A1 (en) 1988-02-10
ATE68552T1 (en) 1991-11-15
WO1987004483A1 (en) 1987-07-30

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