EP0096400B1 - Lock installation for securing doors - Google Patents

Abstract

A locking arrangement for securing doors (2) or the like with two bolts (5, 6) displaceable relative to the door (2) to be closed and two locking devices (7, 8) associated therewith are described. One of the two locking devices (7, 8) has a locking mechanism (9) lockable with a key (10) and the other one is associated with a remote-controllable unlocking drive (14). A positioning device (16) is furthermore associated with lock bolt (5) lockable by the locking mechanism (9), which is actuated when lock bolt (5) is open. The actuation of the remote-controllable unlocking drive (14) is released when lock bolt (5) is open. Safety bolt (6) is associated with the unlocking drive (14). A drive device (17) is associated with the safety bolt (6) and is effective in the opening direction. It cooperates with the lock bolt (5) and is movable with the same in a starting position provided for the displacement of the safety bolt (6 ).

Description

The invention relates to a lock system for securing doors or the like: with two bolts which are mounted so as to be movable relative to the door to be locked and two locking devices assigned to them, one of the two locking devices has a locking mechanism which can be locked with a key and the other is assigned a remote-controlled unlocking drive.

Lock systems are already known which, in order to secure doors, in particular in small tensor systems, have two bolts which are mounted so as to be movable relative to the door to be locked and locking devices assigned to them. One of the two bolts can be unlocked manually using a locking mechanism that can be locked with a key. The other bolt can be released fully automatically via a remote-controlled unlocking drive. A relatively large amount of force is required to adjust this remotely operable bolt. Each lock is therefore equipped with control lines for monitoring the lock and additionally with constant current lines for actuating the drive device for the remotely operable locking bolt.

The present invention has for its object to provide a lock system of the type described above, in which the remotely operable opening of the security bolt requires little power, so that the electrical installation of such lock systems is simplified. In addition, the use of standard locks should also be made possible in the lock system according to the invention.

This object of the invention is achieved in that a position transmitter is assigned to the locking bolt which can be locked with the locking mechanism, which is activated when the locking bolt is open and releases the action on the remotely operable unlocking drive and that the locking bolt assigned to the unlocking drive is assigned a drive device which is effective in the opening direction and which is associated with the locking bar interacts and can be adjusted with it into a release position provided for adjusting the locking bar. The advantage of this surprisingly simple solution lies in the fact that the force applied when the manually operated locking bolt is actuated is stored in order to adjust the securing bolt. Characterized in that the manually applied adjusting force for the locking bolt is used for the adjustment of the locking bolt in the open or closed position, the power requirement which is to be applied by the electrical energy is low. At the same time it is achieved that even with the use of standard locks by adding a few parts, an additional securing of the door is possible by means of a further locking bolt. In conjunction with a control device that is connected to a database, the door can also be fully electronically secured against unauthorized opening. Another advantage of the lock system is that the locking bolt that is to be opened by the remote-controlled locking device is precisely defined by the provision of a position transmitter for the locking bolt. In this way, incorrect operation in such lock systems for securing safe doors is avoided.

According to a further very essential feature of the invention, it is provided that the locking bar is displaceably mounted in a guide track running in the opening direction, in particular arranged on the locking bar, and that the locking device assigned to the locking bar has an unlocking drive formed by an electromagnet and a locking lever engaging in the locking bar, is adjustable by the electromagnet in a release position removed from the locking bolt. This enables a compact construction of a lock system according to the invention, the effort for the installation of the security bolt being reduced by the guidance of the security bolt on the locking bolt. Since the locking bar can only be released by the locking lever for opening, the energy expenditure for opening the locking device is low. The current control and monitoring lines can thus transmit the current to actuate the electromagnet acting on the locking lever.

According to the invention, it is also possible that the drive device for the security bolt by a pulling device arranged between the locking and security bolt, e.g. a coil spring is formed. An advantage of this embodiment is that the force required to open the locking bolt can also be monitored after the locking bolt has been actuated or opened. By prestressing the pulling device or the helical spring forming it, the force for displacing the securing bolt is available even after the locking bolt is actuated when the locking lever is released.

According to a further embodiment of the invention, it is provided that the guideway for the safety catch is preferably arranged in the door frame and that the drive device is formed by a pulling device, namely a screw spring, arranged between the safety catch and the door frame. This enables simple r retrofitting of existing lock systems in lock systems according to the invention, since nothing needs to be changed in the locking bolts and the installations in the door.

An embodiment of the invention is advantageous in which the securing bolt is rotatably mounted about an axis and the drive device is a pulling device, for example a helical spring, which can be moved by the unlocking drive, for example an electromanet, from an idle position between the axis and one end face of the securing bolt to an opening position located between the axis and the opposite end face of the securing bolt. This solution according to the invention is also characterized in that retrofitting to existing lap systems is easily possible and furthermore the additional bolt can be actuated regardless of whether the manually operated locking bolt has already been adjusted to its open position or not. The knee for opening the locking bolt is already saved in this case during the previous closing process of the manually operable locking bolt.

According to the invention, it is also possible that the securing bolt, the associated drive device and the unlocking drive and the position transmitter assigned to the locking bolt are arranged in the door frame.

Within the scope of the invention, an embodiment is also possible according to which the position transmitter is parallel to the unlocking drive, e.g. the electromagnet, and an interrupter element, e.g. has an opening contact, which is activated when the locking bolt is open. This embodiment is characterized by an extremely low installation effort, since only two lines are required to monitor the position of the position transmitter and to act on the unlocking drive. It is also advantageous if the position transmitter and the unlocking drive are connected to both a high-frequency supply system and a low-frequency supply system, since different information can be conveyed in a simple manner via the same line system. So both the position of the position transmitter and the actuation of an electromagnet can be carried out without mutual interference.

Finally, according to a further very advantageous embodiment of the invention, it is provided that the control device for the lock system has a row-column matrix and the position transmitters are connected to the high-frequency supply system via a row control unit and a column control unit and that a code element is activated when the opening contact of the position transmitter is activated is activated, which connects the unlocking drive to the low-frequency supply system via the row control unit and the column control unit, preferably a blocking element being assigned to the code element, which is interconnected on a coding unit and an alarm signaling system and, when the position transmitter is activated, the alarm signaling system is not present without a release signal from the coding unit is activated. This selected type of control and monitoring device can be used in conjunction with the row-column matrix with very little installation effort for a large number of lock systems according to the invention, for example in small safe systems. It is advantageous that the existing components can also be used at the same time for monitoring against unauthorized opening of the doors secured by the lock systems according to the invention. In this way, a favorable combination of effort in the lock system and achievable security level is achieved.

According to the invention it is also provided that the safety bolt or its drive device is assigned an emergency opening device, which preferably comprises an actuating device which can be brought into engagement with the safety bolt or its drive device via a lock. This makes it possible to actuate the locking bolt by manual intervention in connection with another key even after the drive device or the unlocking drive has failed.

For a better understanding of the invention, it is explained in more detail below with reference to the exemplary embodiments shown in the drawings:

• Fig. 1 eine erfindungsgemäße Schloßanlage, eingebaut in einen Kleintresor, mit der zugehörigen Steuereinrichtung in Seitenansicht;
• Fig. 2 die Schloßanlage nach Fig. 1 in Seitenansicht und größerem Maßstab;
• Fig. 3 die Schloßanlage gemäß Figur 1 und 2 in Draufsicht;
• Fig. 4 - 7 verschiedene Stellungen des Sperrund Sicherungsriegels, der erfindungsgemäßen Schloßanlage, gemäß den Figuren 1 - 3, in Seitenansicht;
• Fig. 8 eine Ausfürungsvariante einer erfindungsgemäßen Schloßanlage in Seitensicht;
• Fig. 9 die Schloßanlage gemäß Figur 8 in Stimansicht;
• Fig. 10 -14 verschiedene Stellungen des Sperrund Sicherungsriegels der Schoßanlage gemäß den Figuren 8 und 9;
• Fig. 15 ein Blockschaltbild einer, einer erfindungs-gemäßen Schloßanlage zugeordneten Steuereinrichtung.

Show it

• Figure 1 shows a lock system according to the invention, installed in a small safe, with the associated control device in side view.
• Figure 2 shows the lock system of Figure 1 in side view and on a larger scale.
• Figure 3 shows the lock system according to Figures 1 and 2 in plan view.
• Fig. 4 - 7 different positions of the locking and locking bolt, the lock system according to the invention, according to Figures 1-3, in side view;
• 8 shows an embodiment variant of a lock system according to the invention in a side view;
• 9 shows the lock system according to FIG. 8 in front view;
• 10 -14 different positions of the locking and securing bolt of the lap system according to FIGS. 8 and 9;
• 15 is a block diagram of a control device assigned to a lock system according to the invention.

1 shows a door 2 of a small safe 1 and the associated door frame 3. A lock system 4 is arranged between the door 2 and the door frame 3. This lock system 4 comprises a locking bolt 5 and a locking bolt 6. The locking bolt 5 is assigned a locking device 7 and the locking bolt 6 is a locking device 8. The locking device 7 comprises a manually operated locking mechanism 9 which has a handle which can be locked with a key 10. Between the locking bar 5 and the Locking bolt 6, a drive device 12 is arranged, which is formed for example by a coil spring 13.

An unlocking drive 14, namely an electromagnet 15, is shown in the door frame 3 by the locking device 8 for the locking bolt 6. The locking bolt 5 is assigned a position transmitter in the door frame 3. The electromagnet 15 and the position transmitter 16 are connected to a control device 19 via two lines 17, 18. This control device 19 is equipped with a high-frequency supply system 20, a low-frequency supply system 21, a row control unit 22, a column control unit 23, a program switch 24, e.g. a computer, an energy supply device 25, an alarm signaling system 26 and a siren 27 assigned to this alarm signaling system.

In Figure 2, the lock system 1 is shown, the locking bolt 5 is open. This is done in that the handle 11 is released by turning the key 10 by 90 degrees and by turning the handle 11 the bolt 5 is moved from the rest position 28 shown in broken lines to the open position 29 shown in full lines. The locking bolt 6 is in the closed position because it is held in place by a locking lever 30, which is connected to the unlocking drive 14. Through the movement of the locking bolt 5 into the open position 29, the drive device 12 - the helical spring 13 - is pretensioned so that after the locking bolt 6 has been released, it is opened along a guide track 31 arranged on the locking bolt 5 in the opening direction - arrow 32 - into the open line drawn with dashed lines To spend position. When the locking bolt 5 is withdrawn with the handle 11, the position transmitter 16 is also released and an interrupter member 38 is opened.

In Figure 3, the storage of the locking lever 30 is shown. The locking lever 30 is rotatably mounted on an axis 34 approximately in its longitudinal center - which is held in the door frame 3, and coupled in its end area which is deflected from the locking bolt 6 to the electromagnet 15 of the locking drive 14. In its position fixing the locking bolt 6, the locking lever 30 is biased in the direction of the locking bolt 6 with a tension spring 35. To unlock the locking bolt 6, the lever with the electromagnet 15 is pivoted up against the tension spring 35.

FIGS. 4-7 then show the different positions of the securing and locking bolt 6, 7 of the drive device 12 between the two bolts and the position transmitter 16 and the locking lever 30. In Figure 4 the lock system is shown in the locked state. The locking mechanism 9 is closed and locked with the key. The position transmitter 16 is actuated by the locking bolt 5. The interrupter member 33 is closed. There is a line connection between the two lines 17, 18. The high frequency fed into the lines 17 and 18 by the control device 19 does not influence the coil of the electromagnet 15, but can be passed back to the control device unhindered via the closed contact of the interrupter member 38. In the event that an attempt is now made to open the door 2 by force, the position transmitter 16 is released when the locking bolt 5 is opened and the interrupter member 33 is opened. When the interrupter element is opened, the transmission of the high-frequency currents or pulses is interrupted and the control device 19 triggers an alarm in accordance with the set program. If, on the other hand, an opening of the door 2 is preprogrammed in the control device 19 via the program switching mechanism 24, the locking mechanism 9 can be unlocked with the key and, as shown in FIG. 5, the locking bolt 5 can be moved into its open position by turning the handle 11. By moving the locking bolt 5, the drive device 12, namely the helical spring 13, because the securing bolt 6 is still blocked with the locking lever 30, is biased. The opening of the interrupter member 33 now indicates to the control device 19 that the locking bolt 5 in the door 2 is open, so that the bypass line of the electromagnet 15 is interrupted and a low-frequency voltage can now be supplied by the control device 19 via the same lines 17, 18 that excites the electromagnet 15 briefly. The force of the electromagnet 15 only has to be sufficient to overcome the action of the tension spring 35 and to bring the locking lever 30 out of the cross-sectional area of the securing bolt 6. The force required to move the locking bolt 6 into its open position after the locking lever 30 has been lifted is applied by the pre-tensioned coil spring 13. As a result, only an electromagnet with low power is required, and small line cross sections are sufficient to actuate the electromagnet 15.

6 shows that position of the locking and securing bolt 5 or 6 in which the door 2 can be opened.

FIG. 7 shows that when the lock system is closed by means of the handle 11, the locking and securing bolts 5 and 6 are moved simultaneously in the direction of the door frame 3. The interrupter member 33 is closed by the locking bolt 5. The shape of the end face of the locking bolt 6 ensures that when the locking lever 30 is closed it is pushed up against the action of the tension spring 35 and engages in the locking bolt 6. The state is thus again, as already shown in FIG. 4 produced.

FIGS. 8 and 9 show a variant of a lock system 1. In the lock system shown in Figure 8, a locking bolt 36 is arranged in the door frame 3 of a small safe. A locking bolt 37 is arranged in the door 2. The locking bolt 37 is assigned a position transmitter 16 in the door frame 3. An opening contact 38 of this position transmitter 16, which is designed as an interrupter member 33, is open since the locking bolt 37 has already been opened and is drawn into the door 2. The door 2 is still blocked against opening by the locking bolt 36. To open the locking bolt 36, an unlocking drive 39 is arranged, which comprises an electromagnet 15 and a pulling device 41, which is formed by a helical spring 40 and serves as a drive device for the locking bolt 36. This coil spring 40 is mounted with the inner end 42 in the door frame 3 and with the inner end 43 on the safety latch 36. In the closed position of the locking bolt 36, there is a helical spring 40 between an axis 44, about which the locking bolt 36 can be made difficult, and an end face 45 thereof. A push rod 46 of the electromagnet 15 is guided in a link path 47 which is central to the axis 44. If the safety latch 36 is opened, the electromagnet 15 is acted upon via the lines 17, 18 and pulls the push rod 46. The safety latch 36 is pivoted into its open position 48, drawn with dashed lines, in the direction of the arrow 49. The force of the electromagnet 15 can be kept low, since even after a small pivoting angle the end 43 of the pulling device 41 is located between the axis 44 and an end face 50, which is close to the Kullissenbhnn 47, and supports the opening movement of the locking bolt 36.

FIG. 9 shows that the locking bar 36 has a driving pin 51 which, when the locking bar 36 is opened, is pivoted into the path of movement of the locking bar 37, as indicated by broken lines. Due to the manual force applied when the locking bolt 37 is closed, the safety bolt 36 is moved via the driving pin 51 into the rest position 52 drawn with solid lines and the coil spring 40 is biased again for a further opening movement.

FIGS. 10-14 show the various positions of the locking and securing bolts 35, 37 and of the position transmitter 16 in order to better understand the mode of operation of the lock system according to the invention.

In Figure 10, the lock system is locked and the door 2 is secured by both the locking bolt 37 and the locking bolt 36. After unlocking the lock, the locking bolt 37 can be moved in the opening direction - arrow 54 - with the handle 11 by turning in the direction of arrow 53 - FIG. 11, 12. As a result, the opening contact 38 of the position transmitter 16 is released and informs the control device that the safety catch 36 can now also be opened. This opening of the locking bolt 36 then takes place as described in FIGS. 8 and 9. The position of the locking and securing bolts 36, 37 in the open position is shown in FIG. 13.

In FIG. 14 it is shown that the locking bolt 36 is moved again by the manual movement of the locking bolt 37 when the lap system 1 is closed against the opening direction - arrow 54 - via the driving pin 51. is returned to its closed position shown in FIG. 10.

FIG. 15 shows the control device 19 associated with the lock systems. In order to keep the amount of installation work involved in securing a multitude of doors as low as possible, as is usually the case with small vault systems, a so-called row-column matrix is switched to control the position transmitter 16 in the individual doors. When querying the position of the locking or securing bolt 5, 6 or 36, 37, a high-frequency current pulse or a pulse package is output which does not attract the electromagnet 15. The query impulse can be issued per lock system or together for an entire column.

For this purpose, the control device 19 is provided with a row drive unit 22 and a column drive unit 23. The individual rows and columns of the control system can be connected to a high-frequency supply system 20 or a low-frequency supply system 21 via the row and column control unit 22, 23. The row or column control units 22, 23 are controlled by a program switching device 24 or are connected to a power supply unit 25. In the event of an unauthorized opening of a lock system or a door of such a safe system, the program switching mechanism is assigned an alarm signaling system 26 with a siren 27. Of course, this alarm signaling system 26 can be connected to any alarm signaling device, for example a light signal system or a fully automatic intrusion detection system with a report to the police.

A lock system 4 is arranged in each node between a row and column of the row and column matrix. For better understanding, the lock system 4 described in FIGS. 1 and 2 is used in FIG. This lock system 4 is located in the intersection area between the line 18 embodying the line and the column embodiment line 17. The position transmitter 16 is connected between these lines 17 and 18. A diode 55 is additionally arranged between the position transmitter 16 and the line 17 in order to switch off the influence of further lock systems. In parallel to the position transmitter 16, the electromagnet 15 is connected, which is connected to the locking lever 30.

The function of the control device 19 is such that a common query pulse is triggered by the program switching mechanism 24 per lock or for the locks arranged in a column, for example along the line 17. This is done in such a way that individual current pulses or high-frequency current pulse packets are supplied from the high-frequency supply system 20 to the individual lock systems 1 via the column control unit 23. This high-frequency current pulse does not pass through the electromagnet 15. He also doesn't make the magnet attract. If the interrupter member 33 of the position transmitter 16 is closed, these impulses are fed back unhindered to the control device 19. A continuous passage of this pulse or this pulse packet can be seen in the program switching mechanism 24. The condition is recognized as properly closed. If the lock system 1 is now to be opened, the opening of the door 2 is stored via the program switching mechanism 24. By opening the lock with the aid of the bowl, the opening contact 38 of the position transmitter 16 is opened. The interruption of the transmission of the high-frequency current impulses bsw. Pulse packets signals the program switching mechanism 24 that the safety lock 6 assigned to the sole lock system is to be opened. The program switching mechanism 24 switches the low-frequency supply system 21 to the lines 17 and 18 due to the change in the position of the position transmitter 16. Since the opening contact 38 of the position transmitter 16 is open, the electromagnet 15 picks up and opens the locking lever 30. The locking latch 6 is pulled into its open position .

After the lock system 1 has been closed, the closed state of the lock system 1 is recognized again by the program switching device 24 and the lock system is again used for normal monitoring by means of the high-frequency current pulses.

In order to achieve additional security, the program switching mechanism can be programmed in such a way that a warning signal is emitted after a certain period of opening, in order to prevent doors of a safe system from being accidentally left open.

• Beim unberechtigten Öffnen der Schloßanlage 1 wird der Stellungsgeber 16 durch das Zurückziehen des Sperriegels 5 freigegeben und die hochfrequenten Stromimpulse bzw. Impulspakete unterbrochen. Üblicherweise wurde nun üer ein Codeglied 56 vom Programmschaltwerk 24 die Niederfrequenzversorgungsanlage 21 zum Öffnen des Sicherungsriegels 5 beaufschlagt werden. Zwischen dem Programmschaltwerk 24 und dem Codeglied 56 ist jedoch ein Sperrglied 57 angeordnet, welches mit einer Codiereinheit 58 zussmmengeschaltet ist. Ist nun auf der Codiereinheit 58 keine Öffnungsfreigabe für jene Schtoßantage erteilt, bei der der Stellungsgeber 15 geöffnet ist, so kann der Steuerimpuls vom Programmschaltwerk 24 nicht zur Niederspannungsversorgungsanlage 21 gelangen. Diese Befehlsunterbreschung wird vom Programschaltwerk 24 erkannt und dementsprechend die Alarmmeldeanlage 26 beaufschlagt, die entweder über eine Sirene 27 oder über einen vollautomatischen Meldungsgeber die Sicherungskräfte über das unbefugte Öffnen einer Schloßanlage informiert.

If, on the other hand, sanloss system 1 is now opened without authorization, ie that there is no opening release in the program switch, the alarm message is given as follows:

• When the lock system 1 is opened without authorization, the position transmitter 16 is released by withdrawing the locking bolt 5 and the high-frequency current pulses or pulse packets are interrupted. Usually, a code link 56 has now been applied to the low-frequency supply system 21 by the program switching mechanism 24 to open the locking bolt 5. However, a blocking element 57, which is connected to a coding unit 58, is arranged between the program switching mechanism 24 and the code element 56. If, on the coding unit 58, no opening clearance has been given for the closing position in which the position transmitter 15 is open, the control impulse from the program switching device 24 cannot reach the low-voltage supply system 21. This interruption of the command is recognized by the program switching mechanism 24 and accordingly the alarm signaling system 26 is acted upon, which informs the security forces about the unauthorized opening of a lock system either via a siren 27 or via a fully automatic signal generator.

In order to enable the safety catch 6 to be opened even in the event of a failure of the program switching mechanism 24 or of the drive device 12 or of a defect in the locking device associated with the safety bolt 6, 36, an emergency opening device 59 can be provided, as indicated schematically in FIG. In the exemplary embodiment shown, this comprises a lock 60 and an actuating device 61. If necessary, the actuating device is unlocked with the key via the lock 60 and pressed in the direction of the locking bolt 36 until the actuating device 61 provided with an inner square is on the locking bolt 36 in Area of the axis 44 applied square 62 includes. The safety latch 36 can then be pivoted into the open position by rotating the actuating device 61.

This ensures that the door locked with the lock system according to the invention can still be opened with simple mechanical means using an additional lock if the control system fails.

REFERENCE SIGN LISTING

• 1 1 small safe
• 2 door
• 3 door frames
• 4 castle complex
• 6 locking bolts
• 6 locking bolts
• 7 locking device
• 8 locking device
• 9 Closing mechanism
• 10 keys
• 11 handle
• 12 drive device
• 13 coil spring
• 14 Unlocking drive
• 15 electromagnet
• 16 position transmitter
• 17 line
• 18 management
• 19 control device
• 20 high-frequency supply system
• 21 low-frequency supply system
• 22 line drive unit
• 23 column control unit
• 24 program switching mechanism
• 26 energy supply device
• 26 Alarm system
• 27 siren
• 28 resting position
• 29 open position
• 30 locking lever
• 31 Guideway
• 32 arrow
• 33 breaker link
• 34 axis
• 35 tension spring
• 36 safety catch
• 37 locking bolt
• 38 opening contact
• 39 Unlocking drive
• 40 coil spring
• 41 pulling device
• 42 end
• 43 end
• 44 axis
• 45 end face
• 46 push rods
• 47 backdrop
• 48 open position
• 49 arrow
• 50 end face
• 51 Driving pin
• 52 resting position
• 53 arrow
• 54 arrow
• 55 diode
• 56 code link
• 57 locking member
• 58 coding unit
• 59 Emergency opening device
• 60 castle
• 61 actuator
• 62 square

Claims (10)

1. Locking arrangement for securing doors or the like with two bolts (5,6,36,37) mounted for displacement relative to the door to be closed and two locking devices (7,8) associated therewith, one of the two locking devices having a locking mechanism (9) which may be locked with a key (10) and a remote-controllable unlocking drive (14,39) being associated with the other locking device, characterized in that a positioning means (16) is associated with the lock bolt (5,37) lockable with the locking mechanism (9) and is actuated when the lock bolt (5,37) is open to release the remote-controllable unlocking drive (14,39), and a drive device (12) effective in an opening direction (32,54) and associated with the safety bolt (6,36) associated with the unlocking drive (14,39), the drive device cooperating with the lock bolt (5,37) and being adjustable therewith into a starting position for the displacement of the safety bolt (6,36).

2. Locking arrangement according to claim 1, characterized in that the safety bolt (6) ist displaceably mounted in a guide path (31) extending in the opening direction (32) and which may be arranged on the lock bolt (5), and the locking device (8) associated with the safety bolt (6) has an unlocking drive (14) constituted by an electromagnet (15) and a latch (30) engaging the safety bolt (6) and displaceable by the electromagnet (15) into a release position remote from the safety bolt (6).

3. Locking arrangement according to one of claims 1 or 2, characterized in that the drive device (12) for the safety bolt (6,36) is constituted by a tension device (41), for example a coil spring (13,40), arranged between the lock and safety bolts (5,6,37,36).

4. Locking arrangement according to claim 1, characterized in that the guide path (31) for the safety bolt (6) is preferably arranged in the doorframe (3) and the drive device (12) is constituted by a tension device, i.e. a coil spring (13), arranged between the safety bolt (6) and doorframe (3).

5. Locking arrangement according to one of claims 1-4, characterized in that the safety bolt (36) is pivotal about an axis (44) and the drive device (12) has a tension device (41), for example a coil spring (40), which may be moved by the unlocking drive (39), for example an electromagnet (15), from a rest position (52) between the axis (44) and an end face (45) of the safety bolt (36) to an opening position (48) between the axis (44) and the opposite end face (50) of the safety bolt (36).

6. Locking arrangement according to claim 5, characterized in that the safety bolt (6,36), the associated drive device (12) as well as the unlocking drive (14,39) and the positioning means (16) associated with the lock bolt (5,37) are arranged in doorframe (3).

7. Locking arrangement according to one of claims 1 to 6, characterized in that the positioning means (16) is connected parallel to the unlocking drive (14,39), for example the electromagnet (15), and a circuit breaker (33) has, for example, an opening contact (38) actuated when the lock bolt (5,37) is open.

8. Locking arrangement according to claim 7, characterized in that the positioning means (16) and the unlocking drive (14,39) are connected to a high-frequency power supply installation (20) as well as a low-frequency power supply installation.

9. Locking arrangement according to one of claims 7 or 8, characterized in that the control arrangement (19) for the locking arrangement (4) has a line-column matrix and that the positioning means (16) are connected to the high-frequency power supply installation (20) by a line control unit (22) and a column control unit (23), and that a code member (56) is actuated when the opening contact (38) of the positioning means (16) is actuated, the code member connecting the unlocking drive (14,39) to the low-frequency power supply installation (21) by the line control unit (22) and the column control unit (23), a locking member (57) being preferably associated with the code member (56) and being integrated on a encoding unit (58) and an alarm emitting installation (26), the alarm emitting installation (16) being actuated when the positioning means (16) is actuated without the presence of a release signal emitted by the encoding unit (58). 10. Locking arrangement according to one of claims 1 to 9, characterized in that an emergency opening device (59) is associated with the safety bolt (6,36) or its drive device (12), preferable comprising an actuating device (61) engageable by a lock (60) with the safety bolt (6,36) or its drive device (12).

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