EP0180030B1 - Pneumatic actuating device for vehicle doors - Google Patents

Pneumatic actuating device for vehicle doors Download PDF

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Publication number
EP0180030B1
EP0180030B1 EP85111891A EP85111891A EP0180030B1 EP 0180030 B1 EP0180030 B1 EP 0180030B1 EP 85111891 A EP85111891 A EP 85111891A EP 85111891 A EP85111891 A EP 85111891A EP 0180030 B1 EP0180030 B1 EP 0180030B1
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EP
European Patent Office
Prior art keywords
door
pressure
pressure limiter
valve
limiter
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
Application number
EP85111891A
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German (de)
French (fr)
Other versions
EP0180030A3 (en
EP0180030A2 (en
Inventor
Lothar Dipl.-Ing. Benkowitz (Fh)
Alfred Ernst
Karl Dipl.-Ing. König
Elefterios Dipl.-Ing. Kontotheodorou
Steffen Ing. Schneider
Steffen Ing. Straub
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.)
Robert Bosch GmbH
Daimler Benz AG
Original Assignee
Robert Bosch GmbH
Daimler Benz AG
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.)
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Publication date
Application filed by Robert Bosch GmbH, Daimler Benz AG filed Critical Robert Bosch GmbH
Publication of EP0180030A2 publication Critical patent/EP0180030A2/en
Publication of EP0180030A3 publication Critical patent/EP0180030A3/en
Application granted granted Critical
Publication of EP0180030B1 publication Critical patent/EP0180030B1/en
Expired legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00Power-operated mechanisms for wings
    • E05F15/50Power-operated mechanisms for wings using fluid-pressure actuators
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00Power-operated mechanisms for wings
    • E05F15/40Safety devices, e.g. detection of obstructions or end positions
    • E05F15/49Safety 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
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2900/00Application of doors, windows, wings or fittings thereof
    • E05Y2900/10Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13Application of doors, windows, wings or fittings thereof for buildings or parts thereof characterised by the type of wing
    • E05Y2900/132Doors

Definitions

  • the invention is based on a pneumatic door control system according to the preamble of the main claim.
  • Such door actuation systems are primarily used for automatically closing and opening the doors in public transport, the closing process being initiated by the driver from the driver's station and the opening movement likewise by the driver or via push buttons or buttons arranged near the doors by the passengers. At the same time, the closing pressure of the closed doors is applied to lock them while driving.
  • the invention is based on the object; to improve a circuit arrangement of the type mentioned in such a way that, with little effort, a risk to persons even when the doors open is safely excluded and the known design is simplified.
  • Such a door operating system has the advantage that protection against jamming in the opening and closing directions is provided not only during normal operation of the system but also in the event of electrical failure or in workshop operation, i.e. if the door valve switched mechanically by hand when the system is intact is activated by a magnet is.
  • the secondary ventilation regardless of the pressure level in the door cylinder during the movement of the door, ensures a constant, previously adjustable and safe clamping force for the passenger.
  • Another advantage is that the triggering force on the differential pressure switch can be selected completely independently of the setting of the pressure limiter. This makes it possible, for example, to set the clamping force so low that the doors run slowly and without beating into their end position after an obstacle has been removed.
  • the speed at which the door moves is not affected by the pressure limiter, because the pressure limiter is under current during normal operation of the door and therefore assumes a position in which the compressed air passage through the pressure limiter is unimpeded, that is to say free.
  • FIG. 1 shows a first embodiment of a door actuation system with a lockable emergency valve
  • FIG. 2 shows a modification of the type according to FIG. 1 with an unlockable emergency valve
  • FIG. 3 shows an electrical switching device for the systems according to FIGS. 1 and 2.
  • a door operating system has a storage container 2 fed by a compressor 1, to which two double-acting working cylinders 4, 5 are connected via a line 6, 6a via an electromagnetically actuated switchover or door valve 3.
  • Each working cylinder 4 and 5 is intended for actuating a door, not shown, which is articulated to it.
  • Each closing side of each working cylinder 4 and 5 is a throttle 7 or 8 and each opening side is a throttle check valve 9 or 10 upstream.
  • an emergency valve 11 This is designed as a 3/3-way valve, has a manual override 12 and also a lock 13. The middle position, in which all line connections are separated, is only a transitional position. Subsequent to the emergency valve 11, a throttle valve 14 (also called a starting throttle) is inserted into the line 6, and a pressure limiter 15 is located in front of the door valve 3 neten position the pressure limitation is effective.
  • the pressure limiter 15 has a ventilation point 16 which, in this position of the pressure limiter 15, is connected to the secondary side of the system, that is to say to the working cylinder side. Via this vent 16, the pressure of the secondary side can be released to a certain residual pressure. In its current-operated, other position, it offers a free, unobstructed passage through line 6.
  • the door In the drawn position, the door is closed. To open the closed door (s), the door valve 3 is switched over by briefly receiving its magnet. Before d. H. As soon as the vehicle's electrical system was switched on, the pressure limiter 15 had been switched to its other position, in which it did not hinder the passage of air. The door is opened and the other side of the working cylinder 4 or 5 is vented. If a person is pinched when opening, the power supply to the pressure limiter 15 is interrupted by one of the differential pressure switch 23, which measures the differential pressure between the opening and closing chamber of the working cylinder and responds when a predetermined value is exceeded, so that the pressure limitation becomes effective and the secondary side is vented is up to an adjustable residual pressure.
  • the opening force of the door is significantly reduced and the trapped person cannot be harmed.
  • the door runs slowly and without beating into its open end position due to the low residual pressure.
  • the pressure limiter is energized again by the electrical switching device described in FIG. 3, so that the system is normally ready for operation again at full supply pressure.
  • the door valve 3 is switched over again. If a person is trapped when the door is closed, the reversing which is customary in this case is brought about by means not shown in FIG. 1. With the emergency valve 11, the system can be depressurized so that the doors can be easily opened or closed by hand.
  • the lock 13 ensures that after resetting the emergency valve z. B. during a repair of the vehicle, the system can only be put back into operation by actuating the actuating device located in the driver's position.
  • FIG. 2 shows that it is also possible to do without a lock 13 if the structure of the system is otherwise the same by using the pressure limiter 15 according to the invention. This is because the pinch protection is fully effective even when the system is de-energized by the pressure limiter 15 according to the invention.
  • FIG. 3 shows an embodiment which, starting from the installation according to FIG. 1, represents the electrical circuit for the installation. Corresponding parts again have the same reference numbers as in FIG. 1.
  • the pressure limiter 15 there is a normally closed relay 22, the one coil side of which is connected to + and the other coil side of which is connected to ground via the differential pressure switch 23 and a limit switch 24, but only if the differential pressure switch 23 is closed. So, as shown, the relay 22 is de-energized, but the pressure limiter 15 is energized.
  • the limit switches 24 are mechanically operated switches which are actuated by the door in the settings thereof.
  • Another relay 25 is - as drawn - open when de-energized and controls the current for the pressure limiter 15 in connection with the other relay 22.
  • the mode of operation is such that after the occurrence of an obstacle in the door movement path the pressure limiter 15 is switched to its pressure limiting position.
  • the relay 25 represents a holding relay circuit that comes into operation when the contact of the differential pressure switch 23 closes.
  • the holding relay circuit is released when the door reaches its end positions and the limit switch 24 disconnects the circuit.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Lock And Its Accessories (AREA)

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einer pneumatischen Türbetätigungsanlage nach der Gattung des Hauptanspruchs.The invention is based on a pneumatic door control system according to the preamble of the main claim.

Eine solche Türbetätigungsanlage ist bekannt (DE-A-31 05 867).Such a door operating system is known (DE-A-31 05 867).

Solche Türbetätigungsanlagen werden vor allem zum selbsttätigen Schließen und Öffnen der Türen in offentlichen Verkehrsmitteln eingesetzt, wobei der Schließvorgang vom Fahrstand durch den Fahrzeuglenker und die Öffnungsbewegung ebenfalls vom Fahrzeuglenker oder über nahe den Türen angeordnete Druckknöpfe oder Tasten von den Fahrgästen eingeleitet werden. Zugleich wird der Schließdruck der geschlossenen Türen zu deren Verriegelung während der Fahrt aufgebracht.Such door actuation systems are primarily used for automatically closing and opening the doors in public transport, the closing process being initiated by the driver from the driver's station and the opening movement likewise by the driver or via push buttons or buttons arranged near the doors by the passengers. At the same time, the closing pressure of the closed doors is applied to lock them while driving.

Aus Sicherheitsgründen für den Ein- und Ausstieg sind verschiedene Maßnahmen getroffen, die beim Schließen der Türen ein Einklemmen versehentlich in der Türbewegungsbahn befindlicher Personen oder Gegenstände dadurch verhindern, daß die Türbewegung in Schließrichtung beim Anstoßen der Tür an ein Hindernis gestoppt oder reversiert wird. Beim Öffnungsvorgang hingegen fehlen häufig solche Sicherheitsmaßnahmen, so daß insbesondere im Stoßverkehr mit hohem Belegungsgrad des Fahrzeugs eine Gefährdung von Fahrgästen bei der Türöffnung nicht sicher ausgeschlossen werden kann.For safety reasons for getting in and out, various measures are taken to prevent people or objects accidentally being caught in the door movement path when the doors are closed by stopping or reversing the door movement in the closing direction when the door bumps into an obstacle. However, such safety measures are often absent during the opening process, so that a risk to passengers when opening the door cannot be ruled out, particularly in rush hour traffic with a high occupancy rate of the vehicle.

Der Erfindung liegt die Aufgabe zugrunde; eine Schaltungsanordnung der eingangs genannten Art derart zu verbessern, daß mit geringem Aufwand eine Gefährdung von Personen auch bei sich öffnenden Türen sicher ausgeschlossen und die bekannte Bauart vereinfacht wird.The invention is based on the object; to improve a circuit arrangement of the type mentioned in such a way that, with little effort, a risk to persons even when the doors open is safely excluded and the known design is simplified.

Diese Aufgabe ist bei einer Türbetätigungsanlage der im Oberbegriff des Anspruchs 1 definierten Gattung erfindungsgemäß durch die Merkmale im Kennzeichnungsteil des Anspruchs 1 gelöst.This object is achieved according to the invention in a door actuation system of the type defined in the preamble of claim 1 by the features in the characterizing part of claim 1.

Zwar ist durch die DE-A-32 34 615 bereits bekannt, für Pneumatische Türbetätigungsanlagen einen umschaltbaren Druckbegrenzer zu verwenden. Dieser bekannte Druckbegrenzer hat aber den Nachteil, daß er keine Entlüftungsstelle hat, über die der Arbeitsdruck schlagartig verminderbar ist, um den Öffnungsdruck der Tür zu begrenzen.It is already known from DE-A-32 34 615 to use a switchable pressure limiter for pneumatic door actuation systems. This known pressure limiter has the disadvantage, however, that it does not have a venting point, via which the working pressure can be suddenly reduced in order to limit the opening pressure of the door.

Vorteile der ErfindungAdvantages of the invention

Eine solche Türbetätigungsanlage hat den Vorteil, daß nicht nur beim gewöhnlichen Betrieb der Anlage sondern auch bei Ausfall der Elektrik oder im Werkstattbetrieb, wenn also das bei intakter Anlage über einen Magneten geschaltete Türventil mechanisch von Hand betätigt wird, ein Einklemmschutz in Öffnungs- und Schließrichtung gegeben ist.Such a door operating system has the advantage that protection against jamming in the opening and closing directions is provided not only during normal operation of the system but also in the event of electrical failure or in workshop operation, i.e. if the door valve switched mechanically by hand when the system is intact is activated by a magnet is.

Dazu kommt, daß die Sekundärentlüftung unabhängig von der Druckhöhe in dem Türzylinder während der Bewegung der Tür eine konstante, vorher einstellbare und für den Fahrgast ungefährliche Einklemmkraft gewährleistet.In addition, the secondary ventilation, regardless of the pressure level in the door cylinder during the movement of the door, ensures a constant, previously adjustable and safe clamping force for the passenger.

Ein weiterer Vorteil liegt darin, daß die Auslösekraft an den Differenzdruckschaltem völlig unabhängig von der Einstellung des Druckbegrenzers gewählt werden kann. Dadurch ist es beispielsweise möglich, die Einklemmkraft so niedrig einzustellen, daß die Türen nach Entfernen eines Hindernisses langsam und ohne zu schlagen in ihre Endlage laufen.Another advantage is that the triggering force on the differential pressure switch can be selected completely independently of the setting of the pressure limiter. This makes it possible, for example, to set the clamping force so low that the doors run slowly and without beating into their end position after an obstacle has been removed.

Die Geschwindigkeit, mit der sich die Tür bewegt, wird durch den Druckbegrenzer nicht beeinflußt, weil der Druckbegrenzer im Normalbetrieb der Tür unter Strom steht und dadurch eine Stellung einnimmt, in welcher der Druckluftdurchgang durch den Druckbegrenzer unbehindert, also frei ist.The speed at which the door moves is not affected by the pressure limiter, because the pressure limiter is under current during normal operation of the door and therefore assumes a position in which the compressed air passage through the pressure limiter is unimpeded, that is to say free.

Schließlich ist es auch von Vorteil, daß eine Verriegelung des Nothahns in der Stellung « Notbetrieb entfallen kann, da der Einklemmschutz bei stromloser Anlage voll wirksam ist. Auch dadurch ist eine wesentliche Vereinfachung und Verbilligung der Anlage gegeben.Finally, it is also advantageous that locking the emergency valve in the emergency mode position can be omitted, since the anti-trap protection is fully effective when the system is de-energized. This also significantly simplifies and reduces the cost of the system.

Zeichnungdrawing

Mehrere Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen : Figur 1 eine erste Ausführung einer Türbetätigungsanlage mit einem verriegelbaren Nothahn, Figur 2 eine Abwandlung der Bauart nach der Figur 1 mit einem nicht verriegelbaren Nothahn und Figur 3 eine elektrische Schalteinrichtung für die Anlagen nach Figur 1 und 2.Several embodiments of the invention are shown in the drawing and explained in more detail in the following description. FIG. 1 shows a first embodiment of a door actuation system with a lockable emergency valve, FIG. 2 shows a modification of the type according to FIG. 1 with an unlockable emergency valve and FIG. 3 shows an electrical switching device for the systems according to FIGS. 1 and 2.

Beschreibung der AusführungsbeispieleDescription of the embodiments

Eine Türbetätigungsanlage hat einen von einem Kompressor 1 gespeisten Vorratsbehälter 2, an den über ein elektromagnetisch betätigbares Umschalt- oder Türventil 3 zwei doppeltwirkende Arbeitszylinder 4, 5 über eine Leitung 6, 6a angeschlossen sind. Jeder Arbeitszylinder 4 und 5 ist zum Betätigen einer an ihn angelenkten, nicht dargestellten Tür bestimmt. Jeder Schließseite jedes Arbeitszylinders 4 und 5 ist eine Drossel 7 bzw. 8 und jeder Öffnungsseite ist ein DrosselRückschlagventil 9 bzw. 10 vorgeschaltet.A door operating system has a storage container 2 fed by a compressor 1, to which two double-acting working cylinders 4, 5 are connected via a line 6, 6a via an electromagnetically actuated switchover or door valve 3. Each working cylinder 4 and 5 is intended for actuating a door, not shown, which is articulated to it. Each closing side of each working cylinder 4 and 5 is a throttle 7 or 8 and each opening side is a throttle check valve 9 or 10 upstream.

Unmittelbar hinter dem Vorratsbehälter 2 befindet sich ein Nothahn 11. Dieser ist als 3/3-WegeVentil ausgebildet, hat eine Handbetätigung 12 und außerdem eine Verriegelung 13. Seime Mittelstellung, in der alle Leitungsverbindungen getrennt sind, ist nur eine Übergangsstellung. Anschließend an den Nothahn 11 ist ein Drosselventil 14 (auch Anlaufdrossel genannt) in die Leitung 6 eingesetzt, und vor dem Türventil 3 liegt ein Druckbegrenzer 15. Dieser Druckbegrenzer 15 ist mit einem Betätigungsmagneten ausgerüstet, also umschaltbar, wobei in der stromlosen, gezeichneten Stellung die Druckbegrenzung wirksam ist. Der Druckbegrenzer 15 weist eine Entlüftungsstelle 16 auf, die in dieser Stellung des Druckbegrenzers 15 an die Sekundärseite der Anlage, also an die Arbeitszylinder-Seite angeschlossen ist. Über diese Entlüftungsstelle 16 kann der Druck der Sekundärseite bis auf einen bestimmten Restdruck abgelassen werden. In seiner strombetätigten, anderen Stellung bietet er einen freien, unbehinderten Durchgang durch die Leitung 6.Immediately behind the storage container 2 is an emergency valve 11. This is designed as a 3/3-way valve, has a manual override 12 and also a lock 13. The middle position, in which all line connections are separated, is only a transitional position. Subsequent to the emergency valve 11, a throttle valve 14 (also called a starting throttle) is inserted into the line 6, and a pressure limiter 15 is located in front of the door valve 3 neten position the pressure limitation is effective. The pressure limiter 15 has a ventilation point 16 which, in this position of the pressure limiter 15, is connected to the secondary side of the system, that is to say to the working cylinder side. Via this vent 16, the pressure of the secondary side can be released to a certain residual pressure. In its current-operated, other position, it offers a free, unobstructed passage through line 6.

In der gezeichnetem Stellung ist die Tür geschlossen. Zum Öffnen der geschlossenen Tür (en) wird das Türventil 3 umgeschaltet, indem sein Magnet kurzzeitig Strom erhält. Vorher d. h. bereits beim Einschalten der Elektrik des Fahrzeugs, war der Druckbegrenzer 15 in seine andere Stellung umgeschaltet worden, in der er den Luftdurchgang nicht behindert. Die Tür wird geöffnet und die jeweils andere Seite des Arbeitszylinders 4 bzw. 5 wird entlüftet. Wenn beim Öffnen eine Person eingeklemmt wird, wird durch einen der Differenzdruckschalter 23, der den Differenzdruck zwischen Öffnungs- und Schließkammer des Arbeitszylinders mißt und bei Überschreitung eines vorbestimmten Wertes anspricht, die Stromzuführung zum Druckbegrenzer 15 unterbrochen, so daß die Druckbegrenzung wirksam und die Sekundärseite entlüftet wird bis zu einem einstellbaren Restdruck. Dadurch wird die Öffnungskraft der Tür wesentlich vermindert und die eingeklemmte Person kann keinen Schaden nehmen. Nachdem sich die Person befreit hat, läuft die Tür infolge des nur noch geringen Restdruckes langsam und ohne zu schlagen in ihre Öffnungsendlage. In dieser Lage wird durch die in Figur 3 beschriebene elektrische Schalteinrichtung der Druckbegrenzer wieder bestromt, so daß die Anlage wieder mit vollem Vorratsdruck normal betriebsbereit ist.In the drawn position, the door is closed. To open the closed door (s), the door valve 3 is switched over by briefly receiving its magnet. Before d. H. As soon as the vehicle's electrical system was switched on, the pressure limiter 15 had been switched to its other position, in which it did not hinder the passage of air. The door is opened and the other side of the working cylinder 4 or 5 is vented. If a person is pinched when opening, the power supply to the pressure limiter 15 is interrupted by one of the differential pressure switch 23, which measures the differential pressure between the opening and closing chamber of the working cylinder and responds when a predetermined value is exceeded, so that the pressure limitation becomes effective and the secondary side is vented is up to an adjustable residual pressure. As a result, the opening force of the door is significantly reduced and the trapped person cannot be harmed. After the person has freed themselves, the door runs slowly and without beating into its open end position due to the low residual pressure. In this position, the pressure limiter is energized again by the electrical switching device described in FIG. 3, so that the system is normally ready for operation again at full supply pressure.

Zum Schließen der Tür wird das Türventil 3 wieder umgeschaltet. Wenn beim Schließen der Tür eine Person eingeklemmt wird, wird das in diesem Fall übliche Reversieren durch in Figur 1 nicht dargestellte Mittel bewirkt. Mit dem Nothahn 11 kann die Anlage drucklos gemacht werden, so daß die Türen von Hand leicht geöffnet oder geschlossen werden können. Die Verriegelung 13 sorgt dafür, daß nach Zurückstellen des Nothahns z. B. bei einer Reparatur des Fahrzeugs die Anlage erst durch Betätigung der am Fahrerplatz befindlichen Betätigungseinrichtung wieder in Betrieb genommen werden kann.To close the door, the door valve 3 is switched over again. If a person is trapped when the door is closed, the reversing which is customary in this case is brought about by means not shown in FIG. 1. With the emergency valve 11, the system can be depressurized so that the doors can be easily opened or closed by hand. The lock 13 ensures that after resetting the emergency valve z. B. during a repair of the vehicle, the system can only be put back into operation by actuating the actuating device located in the driver's position.

Die Bauart nach der Figur 2 zeigt, daß es bei sonst gleichem Aufbau der Anlage, durch Verwendung des erfindungsgemässen Druckbegrenzers 15 auch möglich ist, ohne Verriegelung 13 auszukommen. Dies deshalb, weil der Einklemmschutz auch bei stromloser Anlage durch den erfindungsgemäßen Druckbegrenzer 15 voll wirksam ist.The design according to FIG. 2 shows that it is also possible to do without a lock 13 if the structure of the system is otherwise the same by using the pressure limiter 15 according to the invention. This is because the pinch protection is fully effective even when the system is de-energized by the pressure limiter 15 according to the invention.

Entsprechende Teile tragen im übrigen die gleichen Bezugszeichen wie in der Figur 1. Der geänderte Nothahn hat hier die Bezugszahl 21. Es ist zu erkennen, daß die Anlage wesentlich vereinfacht und verbilligt ist.Corresponding parts have the same reference numerals as in Figure 1. The modified emergency valve has the reference number 21 here. It can be seen that the system is significantly simplified and cheaper.

Die Figur 3 zeigt eine Ausführung, die ausgehend von der Anlage nach der Figur 1 die elektrische Schaltung für die Anlage, darstellt. Entsprechende Teile tragen auch hier wieder die gleichen Bezugszahlen wie in der Figur 1.FIG. 3 shows an embodiment which, starting from the installation according to FIG. 1, represents the electrical circuit for the installation. Corresponding parts again have the same reference numbers as in FIG. 1.

Im Stromkreis des Druckbegrenzers 15 liegt ein stromlos geschlossenes Relais 22, dessem eine Spulenseite an + und dessen andere Spulenseite über den Differenzdruckschalter 23 und einem Endschalter 24 an Masse liegt, aber nur, wenn der Differenzdruckschalter 23 geschlossen ist. So, wie gezeichnet ist also das Relais 22 stromlos, der Druckbegrenzer 15 jedoch steht unter Strom. Die Endschalter 24 sind mechanisch betätigte Schalter, die in dem Enstellungen der Tür von dieser betätigt werden.In the circuit of the pressure limiter 15 there is a normally closed relay 22, the one coil side of which is connected to + and the other coil side of which is connected to ground via the differential pressure switch 23 and a limit switch 24, but only if the differential pressure switch 23 is closed. So, as shown, the relay 22 is de-energized, but the pressure limiter 15 is energized. The limit switches 24 are mechanically operated switches which are actuated by the door in the settings thereof.

Ein weiteres Relais 25 ist - wie gezeichnet - stromlos offen und steuert im Zusammenhang mit dem anderen Relais 22 den Strom für den Druckbegrenzer 15.Another relay 25 is - as drawn - open when de-energized and controls the current for the pressure limiter 15 in connection with the other relay 22.

Dabei ist die Wirkungsweise so, daß nach dem Auftreten eines Hindernisses in der Türbewegungsbahn der Druckbegrenzer 15 in seine Druckbegrenzungsstellung umgeschaltet wird.The mode of operation is such that after the occurrence of an obstacle in the door movement path the pressure limiter 15 is switched to its pressure limiting position.

Das Relais 25 stellt dabei eine Halterelaisschaltung dar, die in Funktion tritt, wenn der Kontakt des Differenzdruckschalters 23 schließt. Die Halterelaisschaltung wird dagegen aufgehoben, wenn die Tür im ihre Endstellungen gelangt und der Endschalter 24 den Stromkreis trennt.The relay 25 represents a holding relay circuit that comes into operation when the contact of the differential pressure switch 23 closes. The holding relay circuit, however, is released when the door reaches its end positions and the limit switch 24 disconnects the circuit.

Auf diese Weise können feinfühlige Einstellarbeiten am Druckbegrenzer 15 und am Differenzdruckschalter 23 entfallen.In this way, sensitive adjustment work on the pressure limiter 15 and on the differential pressure switch 23 can be omitted.

Claims (5)

1. Pneumatic door actuating installation for vehicles having a pressure generating device (1, 2), a manually and electromagnetically actuable door valve (3) and having at least one cylinder (4 or 5) which is provided with an articulation for a vehicle door, also having an electromagnetically switchable pressure limiter (5) coordinated with the door valve (3), characterized in that the pressure limiter (15) exhibits a vent position (16) and that in the deenergised position of the pressure limiter (15) said vent position (16) is connected directly to the cylinder (4 or 5) with pressure limitation.
2. Pneumatic door actuating installation according to Claim 1, characterized in that the pressure limiter (15) is an electromagnetically switchable 3/2-way solenoid valve.
3. Pneumatic door actuating installation according to Claim 1 or 2, characterized by its use in conjunction with an emergency cock (11) provided with a locking device (13).
4. Pneumatic door actuating installation according to Claim 1 or 2, characterized by its use in conjunction with an unlockable emergency cock (21).
5. Pneumatic door actuating installation according to one of Claims 2 to 4, characterized in that the pressure limiter (15) is placed in a circuit with a relay (22) closed when deenergised and with a relay (25) open when deenergised and also with a differential pressure switch (23) and with a limit switch (24).
EP85111891A 1984-10-30 1985-09-20 Pneumatic actuating device for vehicle doors Expired EP0180030B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843439613 DE3439613A1 (en) 1984-10-30 1984-10-30 PNEUMATIC DOOR OPERATING SYSTEM FOR VEHICLES
DE3439613 1984-10-30

Publications (3)

Publication Number Publication Date
EP0180030A2 EP0180030A2 (en) 1986-05-07
EP0180030A3 EP0180030A3 (en) 1986-10-08
EP0180030B1 true EP0180030B1 (en) 1989-07-19

Family

ID=6249047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85111891A Expired EP0180030B1 (en) 1984-10-30 1985-09-20 Pneumatic actuating device for vehicle doors

Country Status (2)

Country Link
EP (1) EP0180030B1 (en)
DE (2) DE3439613A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104290686A (en) * 2014-01-06 2015-01-21 郑州宇通客车股份有限公司 System and method for controlling bus door

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3624823A1 (en) * 1986-07-23 1988-02-04 Messerschmitt Boelkow Blohm SECURITY DEVICE FOR A DOOR SYSTEM
DE3809325A1 (en) * 1988-03-19 1989-10-05 Bosch Gmbh Robert Door-actuating device
CN109469419A (en) * 2019-01-04 2019-03-15 厦门金龙联合汽车工业有限公司 A kind of pneumatic Outer turning service door system of quick emergency opening
CN113183731B (en) * 2021-04-19 2022-09-27 金湖县华明客车门系统有限公司 Folding inner swing door used on passenger car

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3105867C2 (en) * 1981-02-18 1982-12-02 Daimler-Benz Ag, 7000 Stuttgart Circuit arrangement for pressure medium-operated, in particular pneumatically operated, doors in vehicles, such as buses, trams or the like.
DE3234615A1 (en) * 1982-09-18 1984-03-22 Robert Bosch Gmbh, 7000 Stuttgart Door-actuating device
DE3310525A1 (en) * 1983-03-23 1984-09-27 Robert Bosch Gmbh, 7000 Stuttgart Door-actuating device, especially for commercial vehicles, such as buses, tramways or the like

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104290686A (en) * 2014-01-06 2015-01-21 郑州宇通客车股份有限公司 System and method for controlling bus door
CN104290686B (en) * 2014-01-06 2017-04-05 郑州宇通客车股份有限公司 A kind of bus door control system and method

Also Published As

Publication number Publication date
DE3439613A1 (en) 1986-05-07
EP0180030A3 (en) 1986-10-08
DE3439613C2 (en) 1988-01-21
EP0180030A2 (en) 1986-05-07
DE3571666D1 (en) 1989-08-24

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