EP1366985A2 - Door locking mechanism - Google Patents

Door locking mechanism Download PDF

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Publication number
EP1366985A2
EP1366985A2 EP03010526A EP03010526A EP1366985A2 EP 1366985 A2 EP1366985 A2 EP 1366985A2 EP 03010526 A EP03010526 A EP 03010526A EP 03010526 A EP03010526 A EP 03010526A EP 1366985 A2 EP1366985 A2 EP 1366985A2
Authority
EP
European Patent Office
Prior art keywords
locking device
locking
actuator
locking mechanism
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.)
Granted
Application number
EP03010526A
Other languages
German (de)
French (fr)
Other versions
EP1366985A3 (en
EP1366985B1 (en
Inventor
Wolfgang Buchs
Thangaraju Nithyanandam
Holger Schreitmüller
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.)
Airbus Helicopters Deutschland GmbH
Original Assignee
Eurocopter Deutschland GmbH
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 Eurocopter Deutschland GmbH filed Critical Eurocopter Deutschland GmbH
Publication of EP1366985A2 publication Critical patent/EP1366985A2/en
Publication of EP1366985A3 publication Critical patent/EP1366985A3/en
Application granted granted Critical
Publication of EP1366985B1 publication Critical patent/EP1366985B1/en
Anticipated expiration legal-status Critical
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/06—Controlling mechanically-operated bolts by electro-magnetically-operated detents
    • E05B47/0657—Controlling mechanically-operated bolts by electro-magnetically-operated detents by locking the handle, spindle, follower or the like
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
    • E05B2047/0014—Constructional features of actuators or power transmissions therefor
    • E05B2047/0018—Details of actuator transmissions
    • E05B2047/002—Geared transmissions
    • E05B2047/0022—Planetary gears
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
    • E05B47/0012—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with rotary electromotors

Definitions

  • the present invention relates to a locking device for securing a Door kinematics for the door of an aircraft.
  • the locking device comprises a control unit, a Actuator for actuating a locking mechanism and an automatic reset device.
  • the locking device is also constructed such that the Control unit the actuator depending on the presence of a predetermined signal actuated to lock the locking mechanism in the locked position bring.
  • the automatic reset device brings in if necessary, especially in in an emergency, the locking mechanism automatically in an unlocked position back so that the airplane door can be opened from the inside.
  • the continues automatic reset device ensures that, for example, if a individual component of the locking device, the locking device also in the unlocked state is reset so that the door kinematics to open the Door can be operated.
  • the locking device advantageously comprises a rotary actuator.
  • a rotary actuator provides a small space high operational reliability, especially with regard to locking during of the flight, sure.
  • a brushless one is preferably used as the rotary actuator DC motor used.
  • Such motors are compact, only need a small space and have only a low weight. Furthermore are Such motors are largely maintenance-free and have a high level of reliability.
  • Another possibility for a rotary actuator is to use a Drive with a solenoid through which an inexpensive drive is provided can be, which, however, a higher weight and a larger Has installation volume as a DC motor.
  • the predetermined signal depending on which the Control unit actuates the actuator, a "flight" signal of the aircraft. This can ensure that the locking device always automatically locks the door kinematics during the flight of the aircraft.
  • Another preferred way of providing the predetermined signal is the provision of a switch, for example in the cockpit predetermined signal is generated when the switch is actuated and the Locking device locks the door kinematics.
  • a switch can for example also for maintenance purposes or to check the function of the Locking device can be used on the floor.
  • the locking device further preferably a gear, in particular a Planetary gear.
  • the automatic reset device is preferably with a spring element formed, whereby a particularly inexpensive locking device can be provided.
  • the automatic includes Reset device at least two spring elements, each individually in the Are able to move the locking mechanism from the locked position to the unlocked position reset. This will make the reset device redundant enables, which also compensates for failure of a spring element can. This will provide an even greater security for a possibly in an emergency get necessary reset of the locking mechanism.
  • the spring elements are preferably biased in that the locking mechanism in the Lock position is brought. This means that the Door kinematics transferred the reset device in its tensioned state.
  • the spring force of the spring element is preferably selected such that the spring element is able to lock the mechanism in a period of a few seconds from the locked position to the unlocked position.
  • the rotary actuator is preferably designed such that it de-energized, also acts as a brake when the locking mechanism of the Lock position is returned to the unlock position. This enables one damped reset of the locking mechanism.
  • the locking mechanism advantageously comprises a hook and a fitting element with a recess in which the hook engages in the locked state and thereby blocking the door kinematics.
  • a separate stop element is provided, which a start and / or defines an end position without the hook being loaded.
  • the control unit preferably controls the actuator such that the Speed when approaching the stop is reduced to a smooth one To achieve striking.
  • control unit controls the actuator in such a way that with a suitable one Signal of the locking mechanism is actively driven in the direction of unlocking.
  • the locking device according to the invention is in particular also for retrofitting in the case of aircraft already in use with corresponding modifications suitable. Since the locking device according to the invention is very light and compact is built, it can usually easily between door frame segments Door to be installed.
  • 1 to 5 is a locking device according to an embodiment of the presented present invention.
  • 1 and 2 show the locked State of the locking device and FIGS. 3 and 4 the unlocked state of the Locking device.
  • the invention comprises Locking device a control unit 10, which via a cable 14 with a Actuator 1 is connected.
  • the actuator 1 is a rotary actuator, which comprises a brushless DC motor 2 which has an output shaft 17 drives.
  • the DC motor 2 is connected via a reduction planetary gear 3 a locking mechanism or locking kinematics 18, comprising one Actuator lever 5, a connecting element 6, a hook 7, two springs 8a, 8b and a fitting 9, connected (see in particular FIGS. 2 and 4).
  • the hook 7 engages in a recess 16 formed in the fitting 9 Undercut (see FIG. 1).
  • the fitting 9 is on one Door inner lever 15 attached (shown only schematically), which has a Handle roller 12 can be operated by hand to the aircraft door in a known manner to open.
  • the locking device comprises a stop mechanism a first stop 11a, a second stop 11b and a finger 4 (see Fig. 3).
  • the finger 4 is connected to the output shaft 17 of the transmission 3 and thus limits the adjustment path of the hook 7.
  • the Stop mechanism is prevented that the hook 7 against the load Fitting 9 presses and could possibly be damaged.
  • Two spiral springs 8a and 8b are used as the automatic reset device provided which when the locking mechanism is moved into the locking position be excited. This state is shown in Fig. 2. Unlocked are also the springs 8a, 8b except for their pre-tensioning relaxed. The restoring force of the springs 8a and 8b is in each case such dimensioned that they are each individually capable of the locking mechanism return to the unlocked state independently from any position. A redundant automatic reset device is thus provided.
  • the locking device according to the invention mountable between two door span segments 13 of the aircraft door.
  • the function of the locking device of the exemplary embodiment according to the invention is as follows.
  • the plane takes off from the ground, it automatically turns on so-called "flight” signal, which indicates the flying state of the aircraft indicates.
  • This signal is supplied to the control unit 10, which the Locking device 1 controls.
  • the Control device 10 Based on the "flight” signal, the Control device 10 the actuator 1 by means of electrical signals via the line 14 such that the DC motor 2 through the drive shaft Voltage limitation drives in a controlled manner.
  • the speed of the Drive shaft is reduced in planetary gear 3.
  • the output shaft 17 of the Planetary gear is with the actuator lever 5 by means of a toothing connected.
  • the Hook 7 thus, starting from the position shown in FIGS. 3 and 4, after moved upwards in the direction of the recess 16.
  • Fig. 3 lies in the starting position of the locking device of the fingers 4 on the second stop 11 b on.
  • the hook 7 is now turned up until the finger 4 on the first Stop 11a strikes (Fig. 1).
  • the hook 7 is in the recess 16 of the fitting 9 arranged without, however, contact between the hook 7 and the fitting 9 is present.
  • the locking device is in their Locked position brought.
  • the control unit 10 for Rotation of the actuator required electronic commutation through detection a current pulse turns off and a constant current into the motor brings. This can prevent the motor from overheating in the end stop and the need for electrical energy to hold the position of the Hook 7 in the locked state is minimized. Furthermore, the Detection of the current pulse an automatic setting of the Actuator travel path reached at the stop. This allows one End position sensor can be dispensed with.
  • the motor 2 If the "Flight" signal is now missing, for example if the aircraft is on the ground or in an emergency in the event of a power failure the motor 2 is switched off and the hook 7 by means of the restoring force of the two springs 8a, 8b returned to its starting position, so that the Inner door lever 15 is released and can be actuated to open the door. So is it is possible to operate the inner door lever 15 in the direction of the arrow in FIG. 4.
  • the motor 2 overruns as a brake by short-circuiting the motor windings a braking resistor and thus prevents a hard stop.
  • the Geometry of the contact surfaces between hook 7 and recess 16 an oblique slip tangent designed so that in the de-energized case, even at Stiffness of the locking mechanism 18 by hand force on the handle roller 12 an opening moment is generated on the hook 7. In the energized case this opening moment is overcompensated by the holding torque of the actuator.
  • the locking device according to the invention is thus constructed such that even at Failure of one of the components of the locking device (e.g. engine failure, mechanical breakage of a component) the reset device the locking device can unlock automatically, so that there is always the possibility of opening the door is guaranteed by hand in an emergency.
  • the rotary actuator 1 can thus be highly reliable in the event of failure of a single element the locking device is in a safe state (unlocked position).
  • the electromechanical locking device has the highest Reliability, even when holding in the locked position, with a low Weight and low manufacturing and assembly costs. Because of the compact In terms of construction, it is also easily possible to lock the inventive locking device in retrofit aircraft already in use.

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  • Lock And Its Accessories (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

The aircraft door mechanism (12,15) securing device has a control unit (10), an actuator (1) for operating a locking mechanism and an automatic reset device. The control unit operates the actuator depending on the presence of a predefined signal so that the actuator brings the locking mechanism into a locking position and the reset device automatically brings the locking mechanism into the unlocking position as required.

Description

Die vorliegende Erfindung betrifft eine Sperrvorrichtung zur Sicherung einer Türkinematik für die Tür eines Flugzeugs.The present invention relates to a locking device for securing a Door kinematics for the door of an aircraft.

In den letzten Jahren sind häufiger Vorfälle aufgetreten, in denen unbefugte Personen versucht haben, sich während des Fluges aus einem Flugzeug nach außen zu begeben und eine Tür eines Flugzeugs zu öffnen. Falls es einem derartigen Passagier gelingen sollte, eine Tür zu öffnen, hätte dies katastrophale Folgen, da die sich entfaltende Notrutsche das Flugzeug zum Absturz bringen kann oder durch den plötzlichen Abfall des Kabinendruckes Personal und Passagiere aus dem Flugzeug geschleudert werden könnten.Incidents involving unauthorized persons have occurred more frequently in recent years People have tried to get out of an airplane while in flight to go outside and open a door of an airplane. If it does if such a passenger were able to open a door, it would be catastrophic Consequences as the unfolding emergency slide can cause the plane to crash may or due to the sudden drop in cabin pressure personnel and Passengers could be thrown out of the plane.

Von daher besteht eine Notwendigkeit für eine Sperrvorrichtung, um Türen des Flugzeugs gegen unbefugtes Öffnen zu sichern.Therefore, there is a need for a locking device to lock doors of the Secure the aircraft against unauthorized opening.

Es ist daher Aufgabe der vorliegenden Erfindung, eine Sperrvorrichtung zur Sicherung einer Türkinematik einer Flugzeugtür bereitzustellen, die bei einfachem Aufbau und einfacher, kostengünstiger Herstellbarkeit eine Flugzeugtür sicher sperren kann und bei Bedarf, insbesondere in einem Notfall, die Sperrung der Tür freigibt.It is therefore an object of the present invention to provide a locking device for Securing a door kinematics of an aircraft door to provide simple Construction and simple, inexpensive to manufacture an aircraft door safely can lock and if necessary, especially in an emergency, the door lock releases.

Diese Aufgabe wird durch eine Sperrvorrichtung mit den Merkmalen des Anspruchs 1 gelöst. Die Unteransprüche zeigen vorteilhafte Weiterbildungen der Erfindung.This task is performed by a locking device with the features of Claim 1 solved. The subclaims show advantageous developments of Invention.

Die erfindungsgemäße Sperrvorrichtung umfasst eine Steuerungseinheit, einen Aktuator zur Betätigung eines Sperrmechanismus und eine automatische Rückstelleinrichtung. Die Sperrvorrichtung ist weiterhin derart aufgebaut, dass die Steuerungseinheit den Aktuator in Abhängigkeit des Vorhandenseins eines vorbestimmten Signals betätigt, um den Sperrmechanismus in Sperrstellung zu bringen. Die automatische Rückstelleinrichtung bringt bei Bedarf, insbesondere in einem Notfall, den Sperrmechanismus selbstständig in eine Entsperrstellung zurück, sodass die Flugzeugtür von innen geöffnet werden kann. Weiter stellt die automatische Rückstelleinrichtung sicher, dass beispielsweise bei Versagen eines einzelnen Bauteils der Sperrvorrichtung die Sperrvorrichtung ebenfalls in den entsperrten Zustand zurückgestellt wird, sodass die Türkinematik zum Öffnen der Tür betätigt werden kann.The locking device according to the invention comprises a control unit, a Actuator for actuating a locking mechanism and an automatic reset device. The locking device is also constructed such that the Control unit the actuator depending on the presence of a predetermined signal actuated to lock the locking mechanism in the locked position bring. The automatic reset device brings in if necessary, especially in in an emergency, the locking mechanism automatically in an unlocked position back so that the airplane door can be opened from the inside. The continues automatic reset device ensures that, for example, if a individual component of the locking device, the locking device also in the unlocked state is reset so that the door kinematics to open the Door can be operated.

Vorteilhaft umfasst die Sperrvorrichtung einen rotatorischen Aktuator. Die Verwendung eines rotatorischen Aktuators stellt dabei bei kleinem Bauraum eine hohe Betriebszuverlässigkeit, insbesondere hinsichtlich der Sperrung während des Fluges, sicher. Vorzugsweise wird als rotatorischer Aktuator ein bürstenloser Gleichstrommotor verwendet. Derartige Motoren sind kompakt, benötigen nur einen geringen Bauraum und weisen nur ein geringes Gewicht auf. Weiterhin sind derartige Motoren weitgehend wartungsfrei und haben eine hohe Zuverlässigkeit. Eine andere Möglichkeit für einen rotatorischen Aktuator ist die Verwendung eines Antriebs mit einem Solenoid, durch den ein kostengünster Antrieb bereitgestellt werden kann, welcher allerdings ein höheres Gewicht und ein größeres Einbauvolumen als ein Gleichstrommotor aufweist.The locking device advantageously comprises a rotary actuator. The Use of a rotary actuator provides a small space high operational reliability, especially with regard to locking during of the flight, sure. A brushless one is preferably used as the rotary actuator DC motor used. Such motors are compact, only need a small space and have only a low weight. Furthermore are Such motors are largely maintenance-free and have a high level of reliability. Another possibility for a rotary actuator is to use a Drive with a solenoid through which an inexpensive drive is provided can be, which, however, a higher weight and a larger Has installation volume as a DC motor.

Besonders bevorzugt ist das vorbestimmte Signal, in dessen Abhängigkeit die Steuerungseinheit den Aktuator betätigt, ein "Flight"-Signal des Flugzeugs. Dadurch kann sichergestellt werden, dass die Sperrvorrichtung immer automatisch während des Fluges des Flugzeugs die Türkinematik sperrt.The predetermined signal, depending on which the Control unit actuates the actuator, a "flight" signal of the aircraft. This can ensure that the locking device always automatically locks the door kinematics during the flight of the aircraft.

Eine andere bevorzugte Möglichkeit zur Bereitstellung des vorbestimmten Signals ist das Vorsehen eines Schalters, beispielsweise im Cockpit, wobei das vorbestimmte Signal bei Betätigung des Schalters erzeugt wird und die Sperrvorrichtung die Türkinematik sperrt. Ein derartiger Schalter kann beispielsweise auch für Wartungszwecke bzw. zur Überprüfung der Funktion der Sperrvorrichtung am Boden verwendet werden. Another preferred way of providing the predetermined signal is the provision of a switch, for example in the cockpit predetermined signal is generated when the switch is actuated and the Locking device locks the door kinematics. Such a switch can for example also for maintenance purposes or to check the function of the Locking device can be used on the floor.

Um eine Reduktion der Antriebsdrehzahl des Aktuators zu ermöglichen, umfasst die Sperrvorrichtung weiter bevorzugt ein Getriebe, insbesondere ein Planetengetriebe.To enable a reduction in the drive speed of the actuator, includes the locking device further preferably a gear, in particular a Planetary gear.

Vorzugsweise ist die automatische Rückstelleinrichtung mit einem Federelement ausgebildet, wodurch eine besonders kostengünstige Sperrvorrichtung bereitgestellt werden kann. Noch bevorzugter umfasst die automatische Rückstelleinrichtung wenigstens zwei Federelemente, die jeweils einzeln in der Lage sind, den Sperrmechanismus von der Sperrstellung in die Entsperrstellung zurückzustellen. Dadurch wird eine Redundanz der Rückstelleinrichtung ermöglicht, wodurch auch ein Ausfall eines Federelements kompensiert werden kann. Somit wird eine noch größere Sicherheit für eine eventuell im Notfall notwendige Rückstellung des Sperrmechanismus erhalten. Die Federelemente werden vorzugsweise dadurch vorgespannt, dass der Sperrmechanismus in die Sperrstellung gebracht wird. Somit wird automatisch immer auch bei Sperren der Türkinematik die Rückstelleinrichtung in ihren gespannten Zustand überführt.The automatic reset device is preferably with a spring element formed, whereby a particularly inexpensive locking device can be provided. Even more preferably, the automatic includes Reset device at least two spring elements, each individually in the Are able to move the locking mechanism from the locked position to the unlocked position reset. This will make the reset device redundant enables, which also compensates for failure of a spring element can. This will provide an even greater security for a possibly in an emergency get necessary reset of the locking mechanism. The spring elements are preferably biased in that the locking mechanism in the Lock position is brought. This means that the Door kinematics transferred the reset device in its tensioned state.

Vorzugsweise ist die Federkraft des Federelements dabei derart gewählt, dass das Federelement in der Lage ist, den Sperrmechanismus in einem Zeitraum von wenigen Sekunden von der Sperrstellung in die Entsperrstellung zu bringen.The spring force of the spring element is preferably selected such that the spring element is able to lock the mechanism in a period of a few seconds from the locked position to the unlocked position.

Weiterhin bevorzugt ist der rotatorische Aktuator derart ausgebildet, dass er, stromlos geschaltet, auch als Bremse wirkt, wenn der Sperrmechanismus von der Sperrstellung in die Entsperrstellung zurückgebracht wird. Dies ermöglicht eine gedämpfte Rückstellung des Sperrmechanismus.Furthermore, the rotary actuator is preferably designed such that it de-energized, also acts as a brake when the locking mechanism of the Lock position is returned to the unlock position. This enables one damped reset of the locking mechanism.

Der Sperrmechanismus umfasst vorteilhaft einen Haken und ein Beschlagelement mit einer Ausnehmung, in welche der Haken im verriegelten Zustand eingreift und dadurch die Türkinematik blockiert. Um während des gesperrten Zustands mechanische Belastungen auf den Sperrmechanismus zu verhindern, ist vorzugsweise ein separates Anschlagelement vorgesehen, welches eine Startund/oder eine Endposition festlegt, ohne dass dabei der Haken belastet ist. The locking mechanism advantageously comprises a hook and a fitting element with a recess in which the hook engages in the locked state and thereby blocking the door kinematics. To during the locked state prevent mechanical loads on the locking mechanism preferably a separate stop element is provided, which a start and / or defines an end position without the hook being loaded.

Vorzugsweise steuert die Steuereinheit den Aktuator derart an, dass die Geschwindigkeit bei Annäherung an den Anschlag reduziert wird, um ein sanftes Anschlagen zu erreichen.The control unit preferably controls the actuator such that the Speed when approaching the stop is reduced to a smooth one To achieve striking.

Gemäß einer weiteren bevorzugten Ausgestaltung der vorliegenden Erfindung steuert die Steuereinheit den Aktuator derart an, dass bei einem geeigneten Signal der Sperrmechanismus aktiv in Richtung Entsperren getrieben wird.According to a further preferred embodiment of the present invention the control unit controls the actuator in such a way that with a suitable one Signal of the locking mechanism is actively driven in the direction of unlocking.

Die erfindungsgemäße Sperrvorrichtung ist insbesondere auch zur Nachrüstung bei schon im Einsatz befindlichen Flugzeugen mit entsprechenden Modifikationen geeignet. Da die erfindungsgemäße Sperrvorrichtung sehr leicht und kompakt aufgebaut ist, kann sie in der Regel problemlos zwischen Türspantsegmenten der Tür eingebaut werden.The locking device according to the invention is in particular also for retrofitting in the case of aircraft already in use with corresponding modifications suitable. Since the locking device according to the invention is very light and compact is built, it can usually easily between door frame segments Door to be installed.

Nachfolgend wird die vorliegende Erfindung anhand eines bevorzugten Ausführungsbeispiels in Verbindung mit der Zeichnung beschrieben. In der Zeichnung ist:

Fig. 1
eine schematische perspektivische Ansicht einer Sperrvorrichtung gemäß einem Ausführungsbeispiel der Erfindung im gesperrten Zustand,
Fig. 2
eine schematische perspektivische Ansicht des Sperrmechanismus im gesperrten Zustand von der zu Fig. 1 entgegengesetzten Seite,
Fig. 3
eine schematische perspektivische Ansicht der Sperrvorrichtung im entsperrten Zustand,
Fig. 4
eine schematische perspektivische Ansicht des Sperrmechanismus im entsperrten Zustand von der zu Fig. 3 entgegengesetzten Seite, und
Fig. 5
eine schematische Darstellung eines öffnungsvorgangs der Sperrvorrichtung.
The present invention is described below on the basis of a preferred exemplary embodiment in conjunction with the drawing. In the drawing is:
Fig. 1
2 shows a schematic perspective view of a locking device according to an exemplary embodiment of the invention in the locked state,
Fig. 2
2 shows a schematic perspective view of the locking mechanism in the locked state from the side opposite to FIG. 1,
Fig. 3
2 shows a schematic perspective view of the locking device in the unlocked state,
Fig. 4
is a schematic perspective view of the locking mechanism in the unlocked state from the opposite side to FIG. 3, and
Fig. 5
a schematic representation of an opening process of the locking device.

In den Fig. 1 bis 5 ist eine Sperrvorrichtung gemäß einem Ausführungsbeispiel der vorliegenden Erfindung dargestellt. Hierbei zeigen die Fig. 1 und 2 den gesperrten Zustand der Sperrvorrichtung und die Fig. 3 und 4 den entsperrten Zustand der Sperrvorrichtung.1 to 5 is a locking device according to an embodiment of the presented present invention. 1 and 2 show the locked State of the locking device and FIGS. 3 and 4 the unlocked state of the Locking device.

Wie insbesondere aus Fig. 1 ersichtlich ist, umfasst die erfindungsgemäße Sperrvorrichtung eine Steuerungseinheit 10, welche über ein Kabel 14 mit einem Aktuator 1 verbunden ist. Der Aktuator 1 ist ein rotatorischer Aktuator, welcher einen bürstenlosen Gleichstrommotor 2 umfasst, der eine Abtriebswelle 17 antreibt. Der Gleichstrommotor 2 ist über ein Reduktionsplanetengetriebe 3 mit einem Sperrmechanismus bzw. Sperrkinematik 18, umfassend einen Aktuatorhebel 5, ein Verbindungselement 6, einen Haken 7, zwei Federn 8a, 8b und einen Beschlag 9, verbunden (vgl. insbesondere Fig. 2 und 4). Im gesperrten Zustand greift der Haken 7 in eine im Beschlag 9 gebildete Aussparung 16 mit Hinterschneidung ein (vgl. Fig. 1). Der Beschlag 9 ist dabei an einem Türinnenhebel 15 angebracht (nur schematisch dargestellt), welcher über eine Griffrolle 12 von Hand betätigbar ist, um die Flugzeugtür in bekannter Weise zu öffnen.As can be seen in particular from FIG. 1, the invention comprises Locking device a control unit 10, which via a cable 14 with a Actuator 1 is connected. The actuator 1 is a rotary actuator, which comprises a brushless DC motor 2 which has an output shaft 17 drives. The DC motor 2 is connected via a reduction planetary gear 3 a locking mechanism or locking kinematics 18, comprising one Actuator lever 5, a connecting element 6, a hook 7, two springs 8a, 8b and a fitting 9, connected (see in particular FIGS. 2 and 4). In the locked State the hook 7 engages in a recess 16 formed in the fitting 9 Undercut (see FIG. 1). The fitting 9 is on one Door inner lever 15 attached (shown only schematically), which has a Handle roller 12 can be operated by hand to the aircraft door in a known manner to open.

Weiterhin umfasst die Sperrvorrichtung einen Anschlagmechanismus, bestehend aus einem ersten Anschlag 11a, einem zweiten Anschlag 11b und einem Finger 4 (vgl. Fig. 3). Der Finger 4 ist mit der Abtriebswelle 17 des Getriebes 3 verbunden und beschränkt somit den Verstellweg des Hakens 7. Durch den Anschlagmechanismus wird verhindert, dass der Haken 7 unter Last gegen den Beschlag 9 drückt und somit evtl. beschädigt werden könnte.Furthermore, the locking device comprises a stop mechanism a first stop 11a, a second stop 11b and a finger 4 (see Fig. 3). The finger 4 is connected to the output shaft 17 of the transmission 3 and thus limits the adjustment path of the hook 7. By the Stop mechanism is prevented that the hook 7 against the load Fitting 9 presses and could possibly be damaged.

Als automatische Rückstelleinrichtung sind zwei Spiralfedern 8a und 8b vorgesehen, welche bei Bewegung des Sperrmechanismus in die Sperrstellung gespannt werden. Dieser Zustand ist in Fig. 2 gezeigt. Im entsperrten Zustand sind auch die Federn 8a, 8b bis auf ihre auslegungsgemäße Vorspannung entspannt. Die Rückstellkraft der Federn 8a und 8b ist dabei jeweils derart bemessen, dass sie jeweils einzeln in der Lage sind, den Sperrmechanismus selbstständig aus jeder Position in den entsperrten Zustand zurückzustellen. Somit ist eine redundante automatische Rückstelleinrichtung vorgesehen.Two spiral springs 8a and 8b are used as the automatic reset device provided which when the locking mechanism is moved into the locking position be excited. This state is shown in Fig. 2. Unlocked are also the springs 8a, 8b except for their pre-tensioning relaxed. The restoring force of the springs 8a and 8b is in each case such dimensioned that they are each individually capable of the locking mechanism return to the unlocked state independently from any position. A redundant automatic reset device is thus provided.

Wie insbesondere in Fig. 1 gezeigt, ist die erfindungsgemäße Sperrvorrichtung zwischen zwei Türspantensegmenten 13 der Flugzeugtür montierbar.As shown in particular in Fig. 1, the locking device according to the invention mountable between two door span segments 13 of the aircraft door.

Die Funktion der erfindungsgemäßen Sperrvorrichtung des Ausführungsbeispiels ist dabei wie folgt. Wenn das Flugzeug vom Boden abhebt, wird automatisch ein sog. "Flight"-Signal erzeugt, welches den fliegenden Zustand des Flugzeugs angibt. Dieses Signal wird zur Steuerungseinheit 10 geliefert, welche die Sperrvorrichtung 1 steuert. Basierend auf dem "Flight"-Signal steuert die Steuereinrichtung 10 den Aktuator 1 mittels elektrischer Signale über die Leitung 14 derart, dass der Gleichstrommotor 2 die Antriebswelle durch Spannungsbegrenzung in geregelter Weise antreibt. Die Drehzahl der Antriebswelle wird im Planetengetriebe 3 reduziert. Die Abtriebswelle 17 des Planetengetriebes ist mit dem Aktuatorhebel 5 mittels einer Verzahnung verbunden. Über den Aktuatorhebel 5 und das Verbindungselement 6 wird der Haken 7 somit, ausgehend von der in den Fig. 3 und 4 gezeigten Stellung, nach oben in Richtung der Aussparung 16 bewegt. Wie aus Fig. 3 ersichtlich ist, liegt in der Ausgangsstellung der Sperrvorrichtung der Finger 4 am zweiten Anschlag 11 b an. Der Haken 7 wird nun solange nach oben gedreht, bis der Finger 4 am ersten Anschlag 11a anschlägt (Fig. 1). Dadurch ist der Haken 7 in der Aussparung 16 des Beschlags 9 angeordnet, ohne dass jedoch ein Kontakt zwischen dem Haken 7 und dem Beschlag 9 vorhanden ist. Somit ist die Sperrvorrichtung in ihre Sperrstellung gebracht. The function of the locking device of the exemplary embodiment according to the invention is as follows. When the plane takes off from the ground, it automatically turns on so-called "flight" signal, which indicates the flying state of the aircraft indicates. This signal is supplied to the control unit 10, which the Locking device 1 controls. Based on the "flight" signal, the Control device 10 the actuator 1 by means of electrical signals via the line 14 such that the DC motor 2 through the drive shaft Voltage limitation drives in a controlled manner. The speed of the Drive shaft is reduced in planetary gear 3. The output shaft 17 of the Planetary gear is with the actuator lever 5 by means of a toothing connected. About the actuator lever 5 and the connecting element 6 is the Hook 7 thus, starting from the position shown in FIGS. 3 and 4, after moved upwards in the direction of the recess 16. As can be seen from Fig. 3, lies in the starting position of the locking device of the fingers 4 on the second stop 11 b on. The hook 7 is now turned up until the finger 4 on the first Stop 11a strikes (Fig. 1). As a result, the hook 7 is in the recess 16 of the fitting 9 arranged without, however, contact between the hook 7 and the fitting 9 is present. Thus, the locking device is in their Locked position brought.

Wenn nun ein Passagier versuchen sollte, den Türinnenhebel 15 mittels einer Griffrolle 12 zu ziehen, um die Tür zu öffnen, verhindert der Haken 7 das Entsichern und Entriegeln Türkinematik.If a passenger should now try to open the inner door lever 15 by means of a To pull the handle roller 12 to open the door, the hook 7 prevents this Unlocking and unlocking door kinematics.

Es sei angemerkt, dass, wenn der Haken 7 in seine Endlage kommt (d.h. der Finger 4 liegt am ersten Anschlag 11a an), die Steuerungseinheit 10 die zur Drehung des Aktuators benötigte elektronische Kommutierung durch Detektion eines Stromimpulses abschaltet und einen konstanten Strom in den Motor einbringt. Dadurch kann ein Überhitzen des Motors im Endanschlag verhindert werden und der Bedarf an elektrischer Energie zum Halten der Position des Hakens 7 im gesperrten Zustand ist minimiert. Desweiteren wird durch die Detektion des Stromimpulses ein automatisches Einstellen des Aktuatorverfahrweges am Anschlag erreicht. Dadurch kann auf einen Endpositionssensor verzichtet werden.It should be noted that when the hook 7 comes to its end position (i.e. the Finger 4 rests on the first stop 11a), the control unit 10 for Rotation of the actuator required electronic commutation through detection a current pulse turns off and a constant current into the motor brings. This can prevent the motor from overheating in the end stop and the need for electrical energy to hold the position of the Hook 7 in the locked state is minimized. Furthermore, the Detection of the current pulse an automatic setting of the Actuator travel path reached at the stop. This allows one End position sensor can be dispensed with.

Wenn nun das "Flight"-Signal ausbleibt, beispielsweise wenn sich das Flugzeug am Boden befindet oder im Falle eines Stromausfalls in einer Notsituation, wird der Motor 2 stromlos geschaltet und der Haken 7 mittels der Rückstellkraft der beiden Federn 8a, 8b in seine Ausgangsstellung zurückgestellt, sodass der Türinnenhebel 15 freigegeben ist und zum Öffnen der Tür betätigbar ist. Somit ist es möglich, den Türinnenhebel 15 in Richtung des Pfeils in Figur 4 zu betätigen. Hierbei läuft der Motor 2 als Bremse durch Kurzschluss der Motorwicklungen über einen Bremswiderstand und verhindert somit einen harten Anschlag.If the "Flight" signal is now missing, for example if the aircraft is on the ground or in an emergency in the event of a power failure the motor 2 is switched off and the hook 7 by means of the restoring force of the two springs 8a, 8b returned to its starting position, so that the Inner door lever 15 is released and can be actuated to open the door. So is it is possible to operate the inner door lever 15 in the direction of the arrow in FIG. 4. Here, the motor 2 overruns as a brake by short-circuiting the motor windings a braking resistor and thus prevents a hard stop.

Wie in der detaillierten, schematischen Darstellung von Fig. 5 gezeigt, ist die Geometrie der Berührflächen zwischen Haken 7 und Aussparung 16 dabei durch eine schräge Abgleittangente derart gestaltet, dass im stromlosen Fall, auch bei Schwergängigkeit des Sperrmechanismus 18 durch Handkraft an der Griffrolle 12 ein öffnendes Moment auf den Haken 7 erzeugt wird. Im bestromten Fall wird dieses öffnende Moment durch das Haltemoment des Aktuators überkompensiert. As shown in the detailed schematic illustration of FIG. 5, the Geometry of the contact surfaces between hook 7 and recess 16 an oblique slip tangent designed so that in the de-energized case, even at Stiffness of the locking mechanism 18 by hand force on the handle roller 12 an opening moment is generated on the hook 7. In the energized case this opening moment is overcompensated by the holding torque of the actuator.

Die erfindungsgemäße Sperrvorrichtung ist somit derart aufgebaut, dass auch bei Versagen eines der Bauteile der Sperrvorrichtung (z.B. Ausfall des Motors, mechanischer Bruch eines Bauteils) die Rückstelleinrichtung die Sperrvorrichtung selbstständig entsperren kann, sodass immer die Möglichkeit des Öffnens der Tür von Hand im Notfall gewährleistet ist. Durch Auswahl des rotatorischen Aktuators 1 kann somit mit hoher Zuverlässigkeit bei Versagen eines einzelnen Elements der Sperrvorrichtung ein sicherer Zustand (Entsperrstellung) erreicht werden. Weiterhin weist die elektromechanische Sperrvorrichtung dabei eine höchste Zuverlässigkeit, auch beim Halten in der Sperrposition, bei einem geringen Gewicht und geringen Herstell- und Montagekosten auf. Aufgrund der kompakten Bauweise ist es auch leicht möglich, die erfindungsgemäße Sperrvorrichtung in bereits im Einsatz befindlichen Flugzeugen nachzurüsten. The locking device according to the invention is thus constructed such that even at Failure of one of the components of the locking device (e.g. engine failure, mechanical breakage of a component) the reset device the locking device can unlock automatically, so that there is always the possibility of opening the door is guaranteed by hand in an emergency. By selecting the rotary actuator 1 can thus be highly reliable in the event of failure of a single element the locking device is in a safe state (unlocked position). Furthermore, the electromechanical locking device has the highest Reliability, even when holding in the locked position, with a low Weight and low manufacturing and assembly costs. Because of the compact In terms of construction, it is also easily possible to lock the inventive locking device in retrofit aircraft already in use.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Aktuatoractuator
22
Motorengine
33
Getriebetransmission
44
Fingerfinger
55
Aktuatorhebelactuator lever
66
Verbindungselementconnecting element
77
Hakenhook
8a8a
Federfeather
8b8b
Federfeather
99
Beschlagfitting
1010
Steuerungseinheitcontrol unit
11a11a
Anschlagattack
11b11b
Anschlagattack
1212
Griffrollenhandle rolls
1313
TürspantsegmentTürspantsegment
1414
Kabelelectric wire
1515
TürinnenhebelInterior door lever
1616
Aussparungrecess
1717
Abtriebswelleoutput shaft
1818
Sperrmechanismuslocking mechanism

Claims (14)

Sperrvorrichtung zur Sperren einer Türkinematik (12, 15) für eine Tür eines Flugzeugs, umfassend eine Steuerungseinheit (10), einen Aktuator (1) zur Betätigung eines Sperrmechanismus (18) und eine automische Rückstelleinrichtung (8a, 8b), wobei die Steuerungseinheit (10) den Aktuator (1) in Abhängigkeit des Vorhandenseins eines vorbestimmten Signals betätigt, sodass der Aktuator (1) den Sperrmechanismus (18) in eine Sperrstellung bringt, und wobei die Rückstelleinrichtung (8a, 8b) bei Bedarf den Sperrmechanismus selbstständig in eine Entsperrstellung bringt.Locking device for locking a door kinematics (12, 15) for a door of a Aircraft, comprising a control unit (10), an actuator (1) for Actuation of a locking mechanism (18) and an automatic Reset device (8a, 8b), wherein the control unit (10) the actuator (1) depending on the presence of a predetermined signal actuated so that the actuator (1) the locking mechanism (18) in a Brings locking position, and wherein the reset device (8a, 8b) if necessary automatically brings the locking mechanism into an unlocked position. Sperrvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Aktuator ein rotatorischer Aktuator ist.Locking device according to claim 1, characterized in that the actuator is a rotary actuator. Sperrvorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass der Aktuator (1) einen bürstenlosen Gleichstrommotor (2) umfasst.Locking device according to claim 2, characterized in that the actuator (1) comprises a brushless DC motor (2). Sperrvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das vorbestimmte Signal ein "Flight"-Signal des Flugzeugs ist.Locking device according to one of the preceding claims, characterized in that the predetermined signal is a "flight" signal of the aircraft. Sperrvorrichtung nach einem der vorhergehenden Ansprüche, weiter umfassend ein Getriebe (3), insbesondere ein Planetengetriebe, zur Reduktion der Antriebsdrehzahl.Locking device according to one of the preceding claims, further comprising a gear (3), in particular a planetary gear, for Reduction of the drive speed. Sperrvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die automatische Rückstelleinrichtung (8a, 8b) als Federelement ausgebildet ist. Locking device according to one of the preceding claims, characterized in that the automatic reset device (8a, 8b) is designed as a spring element. Sperrvorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass die automatische Rückstelleinrichtung (8a, 8b) wenigstens zwei Federelemente umfasst, welche jeweils einzeln in der Lage sind, den Sperrmechanismus (18) von der Sperrstellung in die Entsperrstellung zu bringen.Locking device according to claim 6, characterized in that the automatic reset device (8a, 8b) comprises at least two spring elements, which are each individually capable of bringing the locking mechanism (18) from the locking position into the unlocking position. Sperrvorrichtung nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass das Federelement gespannt wird, wenn der Sperrmechanismus (18) in Sperrstellung gebracht wird.Locking device according to claim 6 or 7, characterized in that the spring element is tensioned when the locking mechanism (18) is brought into the locking position. Sperrvorrichtung nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, dass das Federelement eine derartige Rückstellkraft aufweist, dass der Sperrmechanismus (18) in einem Zeitraum von wenigen Sekunden von der Sperrstellung aus jeder beliebigen Position in die Entsperrstellung bringbar ist.Locking device according to one of claims 6 to 8, characterized in that the spring element has such a restoring force that the locking mechanism (18) can be brought from the locked position from any position into the unlocked position within a period of a few seconds. Sperrvorrichtung nach einem der vorhergehenden Ansprüche, gekennzeichnet durch eine Bremseinrichtung zur Abbremsung der Bewegunggeschwindigkeit bei der Entsperrung der Sperrvorrichtung.Locking device according to one of the preceding claims, characterized by a braking device for braking the speed of movement when unlocking the locking device. Sperrvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Sperrmechanismus (18) einen Haken (7) und ein Beschlagelement (9) mit einer Ausnehmung (16) umfasst, wobei der Haken (7) im gesperrten Zustand in die Ausnehmung (16) eingreift und die Türkinematik (12, 15) blockiert.Locking device according to one of the preceding claims, characterized in that the locking mechanism (18) comprises a hook (7) and a fitting element (9) with a recess (16), the hook (7) in the locked state in the recess (16) intervenes and the door kinematics (12, 15) blocked. Sperrvorrichtung nach einem der vorhergehenden Ansprüche, weiter umfassend eine Anschlageinrichtung (11a, 11b, 4) zur Festlegung einer Startposition und/oder einer Endposition der Sperrvorrichtung.Locking device according to one of the preceding claims, further comprising a stop device (11a, 11b, 4) for fixing a Start position and / or an end position of the locking device. Sperrvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Steuereinheit (10) den Aktuator (1) derart ansteuert, dass die Geschwindigkeit bei Annäherung an den Anschlag (11a) reduziert wird.Locking device according to one of the preceding claims, characterized in that the control unit (10) controls the actuator (1) in such a way that the speed is reduced when the stop (11a) is approached. Sperrvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Steuereinheit (10) den Aktuator (1) derart ansteuert, dass bei einem geeigneten Signal der Sperrmechanismus (18) aktiv in Richtung Entsperren getrieben wird.Locking device according to one of the preceding claims, characterized in that the control unit (10) controls the actuator (1) in such a way that the locking mechanism (18) is actively driven in the direction of unlocking when the signal is suitable.
EP03010526A 2002-05-29 2003-05-10 Door locking mechanism Expired - Lifetime EP1366985B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10223902A DE10223902B4 (en) 2002-05-29 2002-05-29 Locking device of an outer door of an aircraft for locking a door kinematics
DE10223902 2002-05-29

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EP1366985A2 true EP1366985A2 (en) 2003-12-03
EP1366985A3 EP1366985A3 (en) 2004-01-28
EP1366985B1 EP1366985B1 (en) 2006-06-28

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EP03010526A Expired - Lifetime EP1366985B1 (en) 2002-05-29 2003-05-10 Door locking mechanism

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US (1) US6951320B2 (en)
EP (1) EP1366985B1 (en)
JP (1) JP4430339B2 (en)
AT (1) ATE331658T1 (en)
CA (1) CA2429297C (en)
DE (2) DE10223902B4 (en)

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CN103603555B (en) * 2013-08-23 2016-08-10 中国航空工业集团公司西安飞机设计研究所 A kind of cabin door lock
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CN111021865B (en) * 2019-12-09 2021-07-09 中航沈飞民用飞机有限责任公司 Blocking type cabin door opening position lock mechanism

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CN102230344B (en) * 2011-06-21 2014-04-23 宁波永发集团有限公司 Coded lock permanent magnet assembly locking device

Also Published As

Publication number Publication date
EP1366985A3 (en) 2004-01-28
JP2003341596A (en) 2003-12-03
DE50304025D1 (en) 2006-08-10
JP4430339B2 (en) 2010-03-10
DE10223902A1 (en) 2003-12-18
ATE331658T1 (en) 2006-07-15
US6951320B2 (en) 2005-10-04
CA2429297A1 (en) 2003-11-29
CA2429297C (en) 2012-07-03
US20040004159A1 (en) 2004-01-08
DE10223902B4 (en) 2009-04-30
EP1366985B1 (en) 2006-06-28

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