EP2083140B1 - Lock assembly for a two-wing door with an active leaf and a semi-fixed leaf - Google Patents

Description

The invention relates to a locking system for a wing and a passive leaf having double-leaf door with at least one formed as escape door closure wing closure, which has one or more locking bars, which engage in the course of locking in corresponding locking receptacles, for example in a door frame, and at least one actuating element for unlocking and opening the pawl closure, and with at least one designed as emergency exit door leaf closure, which is designed as a drive rod lock with multiple locking and at least one central lock and one or more actuatable via one or more espagnolettes additional locks, wherein the central lock and the auxiliary locks have locking elements, which engage in the course of locking in corresponding locking receptacles in the passive leaf, and with at least one actuation element for unlocking and opening the active leaf closure. - Two-leaf door means in the context of the invention, a two-leaf (swing) hinged door, on the one hand has a fixed leaf and on the other hand, a walking leaf. The passive leaf is also referred to as a demand wing. He is often in a predetermined position, for example, with the wing closed in the door frame locked or locked, while the so-called active leaf can then be opened and closed independently, for example, with closed or locked inactive leaf. In this case, both the sash closure and the sash closure are designed as escape door lock, that is, they are - regardless of the respective locking position - in each case unlocked from the inside of the door without a key or the like and can be unlocked and opened via the respective actuator.

The actuating element may be a conventional door handle on the inside of the door. In this case, such an escape door is set up as an emergency exit. However, the actuator may also be formed as an actuating rod or rod fitting, wherein such an actuating rod extends over a large part of the door width and is easy to use. In this case, the escape door is designed as a panic door. In this case, the locking mechanism of the "normal operation" closed passive leaf is relatively simple. Usually locking bars are provided, which engage on the upper side and underside in corresponding receptacles in the door frame. In the event of a panic, these locking rods are withdrawn via the actuating element. The aisle flap closure is elaborately designed and designed as a drive rod lock with multiple locking.

Overall, such a lock with escape door locks or a panic lock it allows a person escaping from inside, for example in the event of a fire, the previously fully locked lock at any time on the inside lock nut operation to open by means of pushers (EN 179) or bar fitting (EN 1125) ,

While simple panic mortise locks, which have only latch and bolt, are often used for basic security as panic locks, panic multipoint locking systems are increasingly being used to increase security. In the case of the increasingly used double-leaf doors, it is necessary that in a panic case not only the active leaf can be opened, but also the inactive leaf. Of particular importance is the fact that when operating the poppet closure always swinging up the active leaf must be possible.

In this respect, one knows from practice a locking system with panic multi-point locking for double-leaf doors of the type described above, in which in the course of opening the inactive leaf arranged in the fixed wing locking receptacles for the active leaf are slightly withdrawn, so free the locking elements of the active leaf and swung the active leaf with can be. The problem in this context is the fact that the locking elements or the latch of the active leaf remain extended or excluded. Consequently, after such an emergency opening operation, it is not possible to automatically close the active leaf since the extended latches prevent it. This is disadvantageous for both fire safety and security reasons. For example, if it is an outside door in a building, it is often problematic if the door remains unlocked after a "panic case".

A locking system of the type described above is z. B. also from the DE 42 22 751 A1 known. This describes a safety release, which can be retrofitted to doors used in escape and rescue routes. When the active leaf is actuated, an unlocking of the active leaf is automatically achieved via a push element. Thus, a jam-free opening of a two-leaved door is given. By closing the inactive leaf a renewed bias of the thrust element is automatically reached, so that a renewed triggering can take place.

In addition, two-winged panic doors, which are equipped with special panic mortise locks in the fixed leaf and the moving leaf, are known from the field. When pressing or opening the poppet closure, a lever mechanism integrated in the peg closure pushes the extended one Latch of the sash mortise lock back in its lock case. In this way, both elements can be swung back automatically when re-closing (usually by door closer with closing sequence controller). The disadvantage in this case is the fact that after such an opening and closing operation only the active leaf lock latch stops the active leaf. This is in safety terms insufficient. For doors with split locknut and outer handle, the active leaf is completely unsecured after such opening. Incidentally, there is the problem in the known solutions that the bolt of the moving wing lock is not always completely completely pressed by the opposite inactive leaf-lever. It is due to installation and profile due quite possible that the inactive leaf is released too early and the lever mechanism had not yet had the opportunity to push back the latch of the swing gate lock far enough to allow a renewed closing of both wings.

Incidentally, the describes EP 1 700 981 A1 a remote-controlled door opener for a two-leaf door assembly, wherein the active leaf is provided with a door lock, which is designed as a panic lock and having a latch, a latch and a pusher. The inactive leaf is provided with a driving bolt lock, which has a drive bolt rod. The door opener has an unlocking device, the z. B. is a nut of a release handle of the floating bolt lock. This nut is provided with a switch cam which, when rotated, actuates a limit switch which in turn actuates positive opening contacts which interrupt a circuit. In this way, the door opener is unlocked.

From the WO 97/17519 A1 one knows a two-leaf door with passive leaf and active leaf, the closure of the active leaf can be designed as a motor lock and / or as an electric door opener.

Finally, in practice, multi-point locks with motor drive and integrated panic function are known, in which the motorized locking takes place automatically when the door is closed. For this purpose, an integrated magnetic contact is provided in the regularly arranged in the door frame closing strip, which triggers the lock when the door is closed. A corresponding drive unit describes, for example, the DE 103 08 263 B4 , The problems raised in connection with the security of double-winged panic doors have had no effect on such developments.

The invention has for its object to provide a locking system for a leaf and a passive leaf having double-leaf door of the type described above, which ensures not only always a proper unlocking both the active leaf and the passive leaf, but especially after a panic unlocking reliable and safe automatically closable.

To solve this problem, the invention teaches in a generic locking system for a two-leaf door of the type described above, that the active leaf closure is designed as a motor lock with at least one additional drive motor having a drive unit for locking and unlocking the active leaf shutter and that the inactive leaf at least a first Position detection sensor is assigned, which detects an opening of the inactive leaf and / or an operation of the passive leaf closure, wherein the drive motor of the active leaf closure the aisle closure in the case of opening or the operation of the poppet closure automatically unlocked, wherein the drive unit of the active leaf closure automatically locks the leaflet closure in the event of closure of the leaflet closure with the leaflet closed, and wherein the leaflet closure is associated with at least a second position sensing sensor which detects the closed position of the active leaf. The drive motor or the drive unit with one or more electric motors can be designed in a known manner. One or more electric motors operate on, for example, one or more transmissions on the drive rods (see, for example DE 103 08 263 B4 ).

The invention is initially based on the recognition that the problems described above in connection with the unlocking of the inactive leaf can be avoided upon actuation of the active leaf when the active leaf closure is designed as a motor lock, which is controlled by operating the inactive leaf. Consequently, if the inactive leaf closure is actuated in the event of panic and / or the inactive leaf is opened, the first sensor associated with the inactive leaf responds, so that the active leaf is completely unlocked. In the case of operation of the passive leaf, therefore, all the bars of the multi-point locking of the active leaf are automatically withdrawn, so that a subsequent closing of the doors is not prevented or disturbed by excluded bars. This then allows a subsequent automatic and reliable locking of the active leaf closure. Because according to the invention it is provided that the drive motor automatically locks the active leaf closure in the case of closing the active leaf with the inactive leaf closed. For this purpose, the active leaf closure is also associated with a second position sensing sensor with which the position of the active leaf can be interrogated.

Preferably, a control unit is provided, to which on the one hand the position sensing sensor of the inactive leaf and on the other hand, the drive motor of the poppet closure are connected, wherein the control unit in the case of actuation or the opening of the inactive leaf activates the drive motor in the opening direction. Furthermore, the control unit can also provide for the locking of the active leaf after an opening operation, as soon as both inactive leaf and active leaf have returned to the fully closed position. For this purpose, it may be appropriate to connect the additional position sensing sensor of the active leaf with the control unit.

While the locking of the active leaf is carried out by electromotive means, a relatively simple locking mechanism is provided in the inactive leaf, which operates essentially with spring-loaded locking rods or driving rods, which engages in corresponding locking recesses, for example on the top and bottom in the door frame. In the course of actuation or unlocking when opening the passive leaf these rods are withdrawn from the recordings against the force of the locking spring. In the subsequent case of closing the passive leaf locks this arrangement by itself or automatically, since the locking rods or rods may have, for example, beveled ends, which allow a quasi-like automatic locking of the drive rods.

Incidentally, it is expedient if the locking system or the two-leaf door is equipped with a closing sequence controller, which closes after opening the active leaf and fixed wing first, the inactive leaf and only then the active leaf. Such closing sequence controllers, which operate mechanically, for example, are known. You can in the context of Invention can be used in unchanged form. They are often combined with an automatic door closer, so that the two leaves automatically close automatically after opening, but always in the desired closing sequence (first passive leaf and then active leaf).

However, the invention also includes embodiments in which one works without (mechanical) closing sequence controller. This is particularly in question when working with (electric motor) revolving door drives for automatic opening and closing of the wings. The opening and closing and the closing sequence control can be done in this case via a suitable control of the revolving door drives.

The first position sensing sensor, which is assigned to the inactive leaf, can be designed as a contactless sensor or contactless sensor unit. These are, for example, an electromagnetically operating sensor unit which, for example, has a first sensor element on the door frame and a corresponding counter element on the inactive leaf, or vice versa. The sensor element may be a reed switch and the counterelement may be a permanent magnet. There are also optical sensor units conceivable. Furthermore, the position inquiry sensor can also be designed mechanically or electromechanically, for example as a microswitch. Such, for example, actuated by the door or the door frame microswitch can be arranged in the region of the door leaf and / or the door frame. However, it may also be expedient to provide such a microswitch in the region of the resilient drive rods or locking rods of the inactive leaf, that is to say the microswitches are switched by one of the sprung rod exclusions of the inactive leaf closure.

The described solutions are in particular those which actually detect the current position or position of the passive leaf within the frame. Alternatively or additionally, however, sensors may also be provided as position sensing sensors, which do not first interrogate the opening of the wing, but already respond in the course of the actuation of the closure, for example of the rod fitting or the pusher. In that regard, it can be handle switch contacts or lock nut switch contacts, which respond in the case of actuation of the actuating element and generate a signal or transmit a signal to the motor control. Since such sensors or switching elements are usually arranged in the region of the fitting or the lock nut of the poppet closure, it may be expedient to transmit the sensor signal wirelessly, for example by radio signal, to the motor or the controller. However, the invention also includes embodiments with a wired transmission.

In the context of the invention - as explained - the possibility to open the inactive leaf even with a closed leaf. It should be noted that active leaf and / or fixed leaf are usually provided with a door rebate or a projection, so that in the course of pressing the inactive leaf, the active leaf is also swung to a certain extent with. Since it is quite possible that the locking elements of the active leaf are retracted by the engine only when the inactive leaf has been pivoted to a certain extent, it may be appropriate to provide a certain amount of play in the region of the locking elements or the locking receptacles, so that the inactive leaf Even with locked locking elements of the active leaf can be pivoted to a certain extent, which is sufficient that the sensor of the invention responds.

Optionally, it is also possible to arrange the locking receptacles for the locking of the active leaf arranged on the inactive leaf or fixed leaf closure on a retractable latch receiving unit. Such retractable latch receiving units are basically known in practice. Now, if the poppet closure on the actuator, such as the bar fitting, actuated, it is possible that the latch receiving unit is slightly withdrawn with the locking receptacles, so that the inactive leaf can swing open even when still extended locking elements of the active leaf. Then the position inquiry sensor responds, so that now also the locking elements of the inactive leaf are retracted.

Incidentally, the first position sensing sensor according to the invention, which is assigned to the passive leaf, additionally enables the generation of an alarm signal (optical and / or acoustic) or the generation of an alarm message which can be transmitted to a monitoring point.

Furthermore, the locking system according to the invention can be provided in a conventional manner with an access control, which is preferably arranged on the outside. Such outside access control may include a code lock, a transponder, a finger scanner or the like. In this case, it is expedient to use this access control in "normal operation" to unlock only the active leaf. On the unlocking of the passive leaf, this should have no influence.

Particularly advantageous in the context of the invention is the fact that the invention can be realized constructively with existing components or lock systems, so that the installation costs are minimized.

Fig. 1

eine schematische Draufsicht auf eine zweiflügelige Tür,

Fig. 2

eine Ansicht auf die Türinnenseite einer zweiflügeligen Tür mit erfindungsgemäßer Schließanlage und

Fig. 3

einen Ausschnitt aus dem Standflügelverschluss des Gegenstandes nach Fig. 2.

In the following the invention will be explained in more detail with reference to drawings showing only one exemplary embodiment. Show it

Fig. 1

a schematic plan view of a double-leaf door,

Fig. 2

a view of the inside of the door of a two-leaf door with inventive locking system and

Fig. 3

a section of the poppet closure of the object according to Fig. 2 ,

In the figures, a two-leaf door is shown, which has on the one hand a leaf 2 and on the other hand, a fixed leaf 1. The inactive leaf 1 of such a door is usually closed, while the active leaf 2 is opened and closed when the passive leaf 1 is closed or locked during normal operation. For locking or locking the closed passive leaf 1, this inactive leaf has a passive leaf closure 3, which is designed as an escape door lock. For this purpose, a plurality (for example, two) locking rods 4 are provided, which engage in the course of locking or in the locking position in corresponding locking receptacles 5, said locking receptacles are arranged in the embodiment on the upper side and lower side in the door frame R. For this purpose, these locking bars 4 are displaceably guided behind a forend 6 of the inactive leaf 1. This is in Fig. 3 partially indicated. The locking rods 4 are acted upon by one or more locking springs (not shown) which press the locking rods (automatically) into the locking receptacles. To ensure automatic locking of the inactive leaf 1 when closing the inactive leaf 1, are Ends of the locking bars 4 - as in Fig. 3 shown - bevelled so that they are pressed back like a fall in the course of closing the inactive leaf 1 and are finally pressed by the force of the locking spring in the locking receptacles 5 and held in this. For unlocking or opening the inactive leaf closure 3 or passive leaf 1, the inactive leaf closure 3 has an actuating element 7. In that regard, it may be a conventional door handle. In the exemplary embodiment, a rod fitting 7 is provided as an actuating element to increase safety, said rod fitting is pivotally hinged to the door and - similar to a door handle - works on the lock nut of the poppet closure and retracts the locking rods 4 in this way, so that the inactive leaf can be opened ,

The active leaf 2 has a moving leaf closure 8, which is designed as a drive rod lock with multiple locking. This active leaf closure 8 has a central lock 9 and on the upper side and underside of the central lock 9 each have a via a drive rod 10 actuated additional lock 11. The central lock 9 on the one hand and auxiliary locks 11 on the other hand each have at least one locking element 12 in a manner known per se. In that regard, it may be bolts, bolts or the like, said locking elements 12 engage in the course of locking the active leaf closure 8 and in the locking position of the active leaf closure 8 in corresponding locking receptacles 13, said locking receptacles are arranged frontally in the inactive leaf 1. To open the active leaf closure 8 or active leaf 2, an actuating element 14 is likewise provided. This could be designed as a door handle. In the exemplary embodiment, a rod fitting is provided as an actuating element 14 in the region of the active leaf, wherein this pivotally arranged on the active leaf rod fitting 14 works on the central lock 9 and there in particular on the lock nut. The active leaf closure 8 is designed as escape door lock. This means that even with extended bars 12 of the aisle closure always unlocked on actuation of the rod fitting 14, without unlocking with a key or the like is required. Such a panic operation is of course possible only from the inside of the door I, that is, the rod fittings 7 and 14 are associated with the inside of the door.

Incidentally, in the Fig. 1 and 2 recognizable that the door or the locking system is equipped with a closing sequence controller 15 with (automatic) door closer. This ensures, first of all, that both inactive leaf 1 and active leaf 2 pivot automatically in the closed position. Of particular importance, however, is the fact that the closing sequence controller always ensures that first the inactive leaf 1 and only then the active leaf 2 is closed.

In the context of the invention it is now provided that the active leaf closure 2 is designed as a motor lock. For this purpose, the active leaf closure 8 has a drive unit 16 with at least one drive motor. This motor unit 16 enables a motor-driven opening and unlocking as well as locking the active leaf closure 8. Of particular importance is the fact that the inactive leaf 1, a first position sensing sensor 17 is assigned, which detects an opening of the passive leaf 1. According to the invention, it is now provided that the drive motor of the active leaf closure 8 automatically unlocks the active leaf closure 8 in the case of opening the inactive leaf 1. As soon as the sensor 17 responds, the drive motor 16 is set in motion and the active leaf closure 8 in the opening direction operated, so that the locking elements 12 are retracted. Now, if the inactive leaf 1 further pressed, this leads without any problems to open the active leaf 2, as arranged on the moving leaf and / or fixed leaf door rebate 18 with the active leaf with. After such a panic operation can passive leaf 1 and active leaf 2 - controlled by the closing sequence controller 15 - properly close again, as no extended locking elements of the active leaf 2 hinder such a closing movement. It is now provided that the active leaf closure - automatically locked again when the passive leaf already closed, as soon as the active leaf 2 also comes in the closed position. The drive motor 16 consequently locks the active leaf closure 8 automatically again as soon as the inactive leaf 1 and active leaf 2 are closed. For this purpose, a second position sensing sensor 19 is provided which interrogates the position or position of the active leaf (relative to the inactive leaf). This position sensing sensor 19 may be integrated into the motor unit 16 and cooperate with a magnet 19a arranged in the stationary leaf.

In the exemplary embodiment, a control unit 20 is otherwise provided. To this control unit 20, firstly, on the one hand, the position sensing sensor 17 is connected via a connecting cable 21 and the motor drive 16 via a further connecting cable 22. Further, a power supply or a power supply 23 in Fig. 2 indicated, which is connected via a supply cable 24 to the control unit. Since the second sensor 19 is integrated in the drive unit 16, this is also connected via the cable 22 to the control unit 20.

The locking system according to the invention operates as follows:

In the basic position "locked", which in Fig. 2 is indicated, the two door leaves 1, 2 pivoted closed and both the active leaf closure 8 and the poppet closure 3 are locked. The poppet closure 3 locked by the two spring-loaded locking rods 4 up and down. The aisle door lock 8 locks fully motorized the center bar and the two bolts of the central lock 9 and the additional locks 11. The bolt 12 are thus retracted in this locking position in locking receptacles 13, which are arranged in the inactive leaf 1.

It is now possible to open only the active leaf 2 by pressing the active leaf rod fitting 14. Upon actuation of the active leaf rod fitting 14 all locking elements 12 are mechanically retracted via the integrated panic function. The active leaf 2 is opened and then swung over the door closer of the closing sequence controller 15 again. In the pivoted-down position, the closing part-side contact magnet 19a switches the sensor 19 integrated in the motor unit 16 so that the motor drive actuates the active leaf closure 8 and all locking elements 12 are fully extended by a motor. The double-leaf door is now back in the basic position "locked".

If now - for example, in a fire - a panic not about the active leaf 2, but the passive leaf 1 by pressing the passive leaf rod fitting 7, the locking rods 4 are actuated and mechanically extracted from the locking receptacles 5 on the integrated panic function. As soon as these bar exclusions have retracted far enough, the inactive leaf 1 can be swung open. By this opening movement of the position sensing sensor 17 is now activated. In this way, for example, a potential-free continuous signal (NO) from the sensor 17 via the cable 21 to the control unit 20 go. This signal activates the motor 16 and causes an immediate motor retraction movement of all locking elements 12 of the moving leaf engine lock 8. In the further pivoting movement of the active leaf 2 on the inactive leaf 1 (or over the fold) is pressed with. The retraction of all bars is very fast, usually within about 1 second.

If, for example, a person has crossed the double-leaf door in this way, then both wings are automatically swiveled in again automatically via the automatic door closer in the closing sequence controller 15. The door lock adjuster 15 ensures that the active leaf remains open until the fixed leaf 1 has been swiveled in again. Once the inactive leaf 1 has been swiveled in again, the spring-loaded locking rods 4 again drive automatically into the locking receptacles 5 on the door frame, so that first of all the fixed leaf 1 is locked again. Furthermore, the sensor 17 is switched, so that the potential-free continuous signal is deactivated again. The closing sequence controller 15 releases the active leaf, which then automatically swivels back. In tilted position now the sensor 19 switches - taking into account the fact that the sensor 17 again indicates the locking state of the passive leaf - the motor drive 16 of the engine lock. The active leaf closure 8 is fully locked again by a motor. The door is back in the basic position "locked".

From the outside of the door, the active leaf can be unlocked mechanically via the profile cylinder or motorized by means of an access control 25 also indicated in the figure. This is followed by the automatic pivoting and locking already described. An unlocking or opening the pawl closure from the outside of the door is not provided. Overall, the invention provides an electromechanical position inquiry of the inactive leaf element, and this position information is forwarded to the motorized leaf closure. In this way, a logical inevitability between the two independently movable elements / closures is realized in a simple manner.

In the exemplary embodiment, the sensor 17 is designed as an electromagnetic door contact (reed switch), which on the one hand consists of the actual reed switch 17a and on the other hand a counter element, for example a permanent magnet 17b.

Incidentally, it is indicated that the bolt receptacles 13 in the inactive leaf can be arranged in or on a (common) retractable bolt receiving unit 26. Upon actuation of the poppet closure 3, it is then possible to automatically (mechanically) retract this latch receiving unit 26 so that a simple swinging up is possible. In principle, this possibility can be dispensed with, however, if bolt and bolt receptacles provide sufficient clearance to swing open the passive leaf. The already mentioned cuff 6, behind which the locking rods 4 of the passive leaf are guided, is arranged behind the latch receiving unit 26.

Claims (10)

1. A closure system for a two-leaf door having a fixed leaf (1) and a moving leaf (2),
   with at least one fixed leaf closure unit (3) designed as an escape door closure unit, which has one or a plurality of locking bars (4), which in the course of the locking procedure engage in corresponding locking reception areas (5), for example in a door frame (R), and at least one actuation element (7) for purposes of unlocking and opening the fixed leaf closure unit (3),
   and with at least one moving leaf closure unit (8) designed as an escape door closure unit, which is designed as a drive bar closure unit with a multiple locking system, and has at least one central lock (9), together with one or a plurality of additional locks (11), which can be actuated by means of one or a plurality of drive bars (10), wherein the central lock (9) and the additional locks (11) have locking elements (12), which in the course of the locking procedure engage in corresponding locking reception areas (13) in the fixed leaf, and with at least one actuation element (14) for purposes of unlocking and opening the moving leaf closure unit (8), characterised in that,
   the moving leaf closure unit (8) is designed as a motorised lock with at least drive unit (16) with at least one drive motor for purposes of locking and unlocking the moving leaf closure unit (8),
   in that, at least one position-monitoring sensor (17) is assigned to the fixed leaf closure unit (3), which detects an opening of the fixed leaf and/or actuation of the fixed leaf closure unit, wherein
   the drive unit (16) of the moving leaf closure unit (8) automatically unlocks the moving leaf closure unit in the event of an opening and/or actuation of the fixed leaf, i.e. the fixed leaf closure unit, wherein
   the drive unit (16) of the moving leaf closure unit (8) automatically locks the moving leaf closure unit (8) in the event of a closure of the moving leaf closure unit when the fixed leaf closure unit (3) is closed, and wherein
   at least one second position-monitoring sensor (19) is assigned to the moving leaf closure unit (8), which sensor detects the closed position of the moving leaf (2).
2. The system in accordance with Claim 1, characterised by a control unit (20), to which on the one hand the first sensor (17), together with the second sensor (19), are connected, and on the other hand the drive unit (16) is connected, wherein in the event of an opening of the fixed leaf the control unit (20) unlocks the moving leaf closure unit, and/or automatically locks the moving leaf closure unit when the fixed leaf closure unit is closed.
3. The system in accordance with Claim 1 or 2, characterised in that, at least one first position-monitoring sensor (17) is arranged in the door frame (R) and/or in the fixed leaf (3), and, for example, has a frame-side sensor element (17a) together with a leaf-side counter-element (17b), or vice versa.
4. The system in accordance with one of the Claims 1 to 3, characterised in that, the first position-monitoring sensor (17) is designed as a sensor operating in a non-contacting manner, for example, an electromagnetic sensor.
5. The system in accordance with one of the Claims 1 to 4, characterised in that, the first position-monitoring sensor (17) is designed as an electromagnetic sensor, for example a pushbutton switch.
6. The system in accordance with one of the Claims 1 to 5, characterised in that, the first position-monitoring sensor (17) is assigned to the locking bars (5), i.e. is actuated by the locking bars (5) of the fixed leaf closure unit (3).
7. The system in accordance with one of the Claims 1 to 6, characterised in that, at least one mechanical closure sequence selector (15) is assigned to the fixed leaf closure unit and the moving leaf closure unit, which, after an opening of moving leaf (2) and fixed leaf (1), closes firstly the fixed leaf (1), and only subsequently the moving leaf, i.e. it holds the moving leaf (2) open until the fixed leaf (1) is closed.
8. The system in accordance with one of the Claims 1 to 7, characterised in that, the fixed leaf (1) and the moving leaf (2) in each case are fitted with at least one rotary door drive for an automatic opening and closing of the fixed leaf and moving leaf respectively.
9. The system in accordance with one of the Claims 1 to 8, characterised in that, the locking reception areas (5), for the locking elements (12) of the moving leaf closure unit (8), arranged on the fixed leaf (1), are arranged on a retractable locking reception unit (26).
10. The system in accordance with one of the Claims 1 to 9, characterised in that, in the event of an opening of the fixed leaf (1) the position-monitoring sensor (17), and/or the control unit (20), generates an alarm signal.

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