EP0426957B1 - Locking mechanism for safes or safe-doors or similar - Google Patents

Description

The invention relates to a bolt work for a cabinet or safe door or the like with drive linkage for transmitting the opening and closing movement of at least one drive to at least one lock, for example to a locking disc of the bolt work having an opening or locking recess or the like, which lock with a the lock (s) directly or indirectly connected locking rail or the like cooperates in the sense that when the lock is open - in particular in the direction of its longitudinal extension - it can be moved together with the lock in the open position, for example a block, places or the like stop arranged on the locking rail enters the opening or locking recess of the locking disc.

Such a bolt work is known from DE-C-21 38 537 and has proven itself. If the lock is in the closed position, the locking rails and thus the bolts cannot be moved to the open position. As a result, the entire bolt work of such a door can be assigned a high resistance value or a long resistance time against unauthorized opening, in particular if, for example, the key lock used in this known bolt work as a drive for the locking disks is in turn first secured against actuation via a combination lock.

However, cases have become known in which the opening of such mechanical locks or the surrender of the keys or opening secrets required for these locks have been blackmailed. All that had to be done was to identify the persons responsible for opening this safe or safe door and to put it under suitable pressure.

It would therefore be desirable if the locks or lock washers were driven by remote control, so that it would be useless for an extortionist to attempt an extortion at the location of the secured door, but the starting point for remote control would be sufficiently inaccessible for such extortionists could.

In addition, it happens occasionally that such a drive for locking or locking disks fails in some way, so that either an emergency lock in the door must be exposed and operated, or the door must be destroyed to open it.

However, if the drive of the locking disks fails when the door is open, it cannot be secured before a repair, so that the values in the corresponding safe, armored cabinet or safe remain unsecured.

It is therefore the task of creating a bolt work of the type mentioned at the outset which, even if the drive of the locks and locking disks fails, permits opening or closing, but nevertheless has a high resistance time.

The solution to this apparently contradictory task is that the locking rail is adjustable from its position of use and that the bolt work has a second drive which is used to adjust the locking rail from it Position of use is provided in a position in which the locking rail is outside of the effective range of the lock when it and the bolt are actuated, so that the bolt (s) can be moved and retracted when the first drive fails, even when the lock is closed.

Surprisingly, not only a drive for the lock or the locks is provided in this bolt work, but in addition there is a drive for adjusting the correspondingly adjustable counterparts of these locks, i.e. the locking rails, so that the user can choose one or the other Drive could use, the drive for adjusting the locking rails could usually only be provided as an emergency operation, while the drive for the locks is used in the usual way. If this first or main drive for the locking disks fails, there is still the possibility, via the second drive, which acts on the locking rails or similar counterparts of the locking disks, to actuate the bolt or bolts without having to damage the door. At the same time, this second drive can of course be designed according to all the rules of the security options known in the construction of a safe lock.

The invention also allows a design of its own worthy of protection, which significantly increases security against attempts to extortion, because it opens up a very simple possibility of remote control, in which the drive is no longer directly on the door itself, but by a blackmailer not known or inaccessible place. This embodiment can consist in that the lock or locking disk has an electric drive, in particular an electric motor with a gear, for example for displacing an actuating linkage for the lock / lock.

The lock or locks can thus be actuated by an electric motor, that is, also brought into their open position, so that remote control via electrical lines is very simple. Even in the event of a power failure, however, such a secured door does not have to remain closed because, due to the arrangement according to the invention of a second drive, which acts on the counterparts of the lock and can deactivate it, the door can nevertheless be opened and, with an appropriate design, closed again.

It is expedient if a mechanical lock, preferably a key lock, is provided as a drive for adjusting the locking rail or similar counterpart from the area of action of the lock, which particularly engages on the deflectably mounted locking rails via a linkage connected to it.

If the electric drive fails due to a power failure or other malfunction, the conventional mechanical opening and closing option for the door is still retained, but the key for this lock is no longer in the immediate vicinity of the door or in constant possession of an operator must, but can be deposited appropriately, so that the accessibility for a blackmailer is no longer recognizable or made impossible.

It is particularly favorable for the resistance time of the bolt work if at least two locking disks and two locking rails or similar counterparts are provided, each of which can be adjusted together with one of the drives.

Further embodiments are the subject of claims 4 and 6 to 16. What is particularly important here is the measure according to claim 12, which not only represents an embodiment of the solution according to the invention, but can also have its own worthy of protection because the additional locking according to this claim 12 above all creates the possibility of the door with the Bring the bolt work into the closed position and lock it with the necessary security against unauthorized opening, even if the main drive for the locks fails with the door open and the lock washers open. Through these measures, the second drive, formed by a lock, only goes considerably beyond an emergency lock function to open such a door. If the key used for this emergency is again carefully stored at a remote location after the bolt mechanism has been closed, the bolt mechanism is also secured against extortion in the same way.

The attainment of a sufficient mechanical securing of this emergency locking system can be seen from claim 14, while claim 15 specifies a possibility of how the corresponding fixing of the locking elements for the locking rail can then be released again, and then the bolt work again with the first or main drive , in particular to be able to be operated electrically via remote control.

Due to the fact that according to the invention each with a drive for the interacting parts in the locked position, i.e. on the one hand the locks or locking disks and on the other hand the counterparts for this, the bolt work or locking system, especially when combined with the further features and measures of the subclaims, is possible in the event of a fault in the electrical, for example Locking device an alternative opening possibility to use what is preferably achieved with the help of a key lock and a fetched key deposited in a foreign location. An emergency opening of the blocking area of the bolt work is thus possible. If the fault in the electrically controlled area has occurred in the open position, the door can still be secured by locking with the key, so that the combination of the features and measures described above not only permits an emergency opening, but also an approximately equivalent locking of the door. A mechanic can return the entire locking system to the electromotive control by returning the activated additional locking points for the locking rails or similar counterparts to their starting position, which can be done easily with the door open and without damage by opening corresponding areas on the inside of the door is possible.

An additional improvement in security during normal operation is possible with the electric remote control in that the command given by the remote control is initially only saved and finally realized or through additional manipulation on the door, for example by entering a personal identification number on a corresponding device is put into practice.

An exemplary embodiment of the invention is described in more detail below with its details that are essential to it, using the drawing.

Fig. 1

eine Ansicht eines Riegelwerkes mit dessen Sperrsystem für eine Tresortüre, wobei jeweils auf einzelne Sperrscheiben für das Riegelsystem ein Hauptantrieb und zusätzlich auf die Gegenstücke dieser Sperrscheiben, nämlich Sperrschienen, ein zweiter, als Schloß ausgebildeter Antrieb einwirken können,
in vergrößertem Maßstab

Fig. 2

den Teil des Riegelwerkes mit dem motorischen und dem über ein Schlüsselschloß betätigten Antrieb, wo bei der Riegel nach einem Verstellen der Sperrscheiben mit Hilfe des motorischen Antriebes geöffnet ist,

Fig. 3

eine der Fig. 2 entsprechende Darstellung, bei welcher die Gegenstücke der Sperrscheiben, nämlich die Sperrschienen mit Hilfe des Schlüsselschlosses ausgelenkt sind, so daß die noch geschlossenen Riegel zurückziehbar sind.

Fig. 4

eine der Fig. 3 entsprechende Darstellung nach dem Zurückziehen der Riegel, wobei die verstellen Sperrschienen an den Sperrscheiben vorbeibewegt sind,

Fig. 5

eine der Fig. 4 entsprechende Darstellung, nachdem die Riegel wieder in Schließstellung verstellt und die Sperrschienen mittels des Schlosses wieder in Sperrstellung bewegt sind, wobei sie in der Sperrstellung durch eine zusätzliche, bei ihrer vorhergehenden Verstellung in Funktionslage gebrachten Verriegelung in Eingriff sind,

Fig. 6

in weiter vergrößertem Maßstab eine Ansicht der zusätzlichen Verriegelung für die Sperrschienen in ihrer Offenstellung,

Fig. 7

die zusätzliche Verriegelung gemäß Fig.6 in Draufsicht, wobei der Bereich eines in Gebrauchsstellung wirksamen Sperrstiftes aufgebrochen im Schnitt dargestellt ist,

Fig. 8

eine der Fig. 6 entsprechende Darstellung der zusätzlichen Verriegelung in ihrer aktivierten und die Sperrschienen sperrenden Position sowie

Fig. 9

die der Fig. 7 entsprechende Draufsicht der zusätzlichen Verriegelung, wobei der Sperrstift durch Federkraft in eine Sperrausnehmung verschoben ist und die Sperrposition der zusätzlichen Verriegelung arretiert.

It shows in a partially simplified or schematic representation:

Fig. 1

a view of a frame work with its Locking system for a safe door, a main drive acting on individual locking disks for the locking system and additionally on the counterparts of these locking disks, namely locking rails, a second drive designed as a lock can act,
on an enlarged scale

Fig. 2

the part of the bolt work with the motorized drive and the drive operated via a key lock, where the bolt is opened after the locking disks have been adjusted using the motor drive,

Fig. 3

a representation corresponding to FIG. 2, in which the counterparts of the locking disks, namely the locking rails, are deflected by means of the key lock, so that the latches which are still closed can be withdrawn.

Fig. 4

3 shows a representation corresponding to FIG. 3 after the latches have been withdrawn, the adjusted locking rails being moved past the locking disks,

Fig. 5

4 shows a representation corresponding to FIG. 4 after the latch has been moved back into the closed position and the locking rails have been moved into the locked position again by means of the lock, wherein they are engaged in the locked position by an additional locking brought into their functional position during their previous adjustment,

Fig. 6

on a larger scale a view of the additional locking for the locking rails in their open position,

Fig. 7

the additional locking according to Figure 6 in plan view, the area of a locking pin effective in the use position is shown broken away in section,

Fig. 8

a representation corresponding to FIG. 6 of the additional locking in its activated and the locking rails locking position as well

Fig. 9

7 corresponding top view of the additional locking device, the locking pin being moved by spring force into a locking recess and locking the locking position of the additional locking device.

An essentially completely in Fig. 1, partially shown in Figures 2 to 5 and in particular with respect to the parts essential to the invention, generally designated 1, is mounted on a base plate 2 and intended for installation in a safe or safe door. On the right-hand side, the individual latches 3 can be seen in FIG. To lock the door having this bolt work 1, this entire cross member 4 is moved in the direction of extension of the bolt 3. Correspondingly, in order to open a cabinet or safe door, the crossbar 4 is retracted transversely to its course and in the direction of extension, the latch 3

The cross member 4 is held by several rods.

A middle bumper 5 serves to transmit the movement of the door handle (not shown in detail), which engages on the drive housing 6, to the crossbar 4 in the sense of its to-and-fro movement. The basic principle of this boltwork 1 corresponds to that of DE-C-21 38 537.

Essential are locks 7 designed as locking disks, which are adjusted to an open position before a retraction movement of the latches 3 and into a closed position after the latches 3 have been closed, with a drive motor 8 for this locking disks 7 for the transmission of this opening and closing movement Drive linkage 9 is provided. The locking washers 7 have opening or locking recesses 10, with which locking bars 11 connected to the cross member 4 of the bolt 3 and at the ends of the locking disks 7 facing ends cooperate in the sense that the respective locking bar 11 with the lock open, i.e. one Position in which the locking recess 10 is directly opposite the stud 12, see FIG. 2, together with the latches 3, can be moved into the open position, the stud 12 arranged on the locking rail 11 entering the locking recess 10 of the locking disk 7, as in FIG Fig. 2 is shown, and wherein the displacement of the locking rail 11 takes place in the direction of its longitudinal extent, the locking rail 11 thus act in the locking position as pressure bars.
A significant deviation and special feature compared to the boltwork according to DE-C-21 38 537 in the embodiment is that the locking rails 11 are movable and adjustable from their position of use shown in Figures 1 and 2 and that the boltwork 1 in addition to that as Main drive serving motor 8 has a second drive, also to be described in more detail below, which is provided for moving the locking rails 11 from their position of use into a position in which the locking rails 11 are actuated when they and the bolt are actuated With the help of the bumper 5 lie outside the effective range of the locking disks 7, so that the latches 3 are displaceable and retractable even when the first drive fails, that is to say when the motor 8 fails, when the locking disks 7 are in the locked or closed position. This can be seen above all from FIGS. 3 and 4.

In the exemplary embodiment it is now indicated that the locking disks 7 have an electric drive, namely the electric motor 8 with a gear for moving the drive linkage 9 for the locks. This makes it possible to actuate this main drive and thus the locking disks 7 electrically, that is, to provide a remote control for releasing the locking movement. This has the great advantage that no key or opening secret is required for this release of the unlocking of the door, which could be blackmailed by a person responsible for opening and closing this bolt work 1. The remote control can be operated from a location unknown or inaccessible to blackmailers.

As a drive for adjusting the locking rails 11 - or possibly other counterparts cooperating with the locks or locking disks 7 - from the area of action of the locking disks 7, a mechanical lock 13, for example a key lock 13 to be operated with a key, is provided in the exemplary embodiment that in the event of a power failure or failure of the motor 8 or its additional parts, the bolt work 1 can still be opened easily and without destruction. However, since this key is only required very selenium, it can be kept in a place that is also inaccessible to blackmailers. The lock 13 thus has the function of an emergency lock.

In the exemplary embodiment, this key lock 13 engages About a linkage 14 connected to him in a manner to be described in more detail on the deflectably mounted locking rails 11 so that the actuation of the lock 13 leaves the locking disks 7 unaffected, but instead deflects their counterparts so that the mutual locking function is canceled. Thus, after actuation of the lock 13, the bumper 5 can also be used, for example, in the pulling direction to open the latch 3.

While in DE-C-21 38 537 the locking rails 11 are firmly connected to the cross member 4, in the exemplary embodiment the locking rails 11 are pivotally mounted on the cross member 4 carrying the bolts. They could also optionally be displaceable in the longitudinal direction of the cross member 4 or be suitably attached directly to one or more bolts 3 in a suitable manner, for example if a bolt mechanism 1 should only be used with one bolt and thus possibly only with a locking rail 11.

The locking rails 11 are also in a manner known from DE-C-21 38 537 in their position of use to their locking position, but the guide and bracket for the use and locking position of the locking rails 11 by means of the linkage 13 actuated by the lock 14 displaceable and thereby the locking rails 11 according to FIG. 3 can be pivoted out of the locking area.

It has already been indicated that a bolt work with a locking washer 7 and a cooperating locking rail 11 or similar counterpart in the manner described above could be equipped with a drive for the locking washer and a drive for the locking rail. In the exemplary embodiment, however, it can be seen that at least two locking disks 7 and accordingly two Locking rails 11 are provided, which are each adjustable together with one of the drives.

The aforementioned guidance of the locking rails 7 is realized in that the locking rails 11 have elongated holes 15 which are penetrated by cross bolts 16, relative to which the locking rails 11 when opening the latch 3 in their longitudinal direction and transversely to a connecting rod 17 to be described, the the cross bolt 16 carries, guided by means of these elongated perforations 15. The different position of the transverse bolts 16 relative to the elongated perforations 15 can be seen, for example when comparing FIGS. 2 and 5 or 3 and 4.

An increase in security against unauthorized openings or an increase in the resistance time of the bolt work 1 is made in the embodiment in that in addition to the key lock 13 a combination lock 18 is provided, which the actuation of the key lock 13, in particular the removal of a Locks the key for opening the carriage bolt receiving the key lock 13, so that the key cannot be inserted at all, but also the key lock 13 remains inaccessible by this carriage bolt, and after opening it releases this carriage bolt so that it is pulled out, can be provided with the key and inserted again for the operation of the key. If necessary, this combination lock 18 can also or instead act on further locking disks 7.

In the exemplary embodiment, the electric motor 8 engages via a worm gear 19 on a push rod 20 belonging to the drive linkage 9, which has or carries arms 21 or the like transmission lever for engaging the locking disks 7 at a distance from their rotary bearing, the Articulation points 22 of these arms 21 on the locking disks 7 whose locking recesses 10 are opposite. From the locking disks acted upon by the combination lock 18, however, it can be seen that other assignments of the articulation points 22 to the locking recesses 10 are also possible.

The key lock 13 acts on a push or pull rod 23, which thus belongs to the linkage 14 and, in the exemplary embodiment, runs transversely and even at right angles to the locking rails (FIGS. 1, 2 and 5) which are in the use position, i.e. not deflected, and with the Locking rails 11 is operatively connected for their pivoting.

This actuating or pull rod 23 of the key lock 13 engages via a pivotably mounted lever 24, which also belongs to the linkage 14, on the locking rails 11, which in the exemplary embodiment occurs indirectly via the connecting rod 17 which already connects the locking rails 11. Thus, a lever 24 is sufficient to act on this connecting rod 17 and thereby several, in the exemplary embodiment 2 locking rails 11 for their adjustment out of their locking position.

So that space constraints can be taken into account, it is advantageous if the adjusting movement of the pull rod 23 and that of the connecting rod 17 run in the same direction, which would not be possible with a single lever 24 articulated between these two. In the exemplary embodiment it is therefore provided that for the pivoting of the locking rails 11 from their position of use and thereby in the direction of the adjustment of the pull rod 23 of the lock 13 between this pull rod 23 and the connecting rod 17, two each pivotably mounted and overlapping at the mutually facing ends 25 In this overlap region, levers 24 which are connected to one another in an articulated manner are provided are, so that the desired movement in the same direction can be carried out via this lever mechanism, which can be clearly recognized by comparing FIGS. 2 and 3.

Since the connecting rod 17 engages over fixed pins 27 by means of elongated perforations 26, it is forcibly guided and can in turn carry the cross bolts 16 for the elongated hole guides 15 of the locking rails 11, so that these locking rails both in their normal position of use and in their position according to FIG. 3 and 4 deflected position are adjustable adjustable.

The features and construction details described above thus allow the locking of the bolts 3 to be lifted in the event of a failure of the motor drive 8, in that the locking rails 11 are moved out of the mutual locking position, not as is usually the case with the locking washers 7.

However, there is a possibility that the electric motor drive 8 will fail when the door is open, but the door and the bolt work 1 must be closed and secured. An embodiment of the bolt work 1 therefore provides that in addition to the emergency opening option, a real locking and closing is possible, even if the locking disks 7 have remained in an open position and cannot be brought into their locking position with the aid of their drive 8.

In the exemplary embodiment, the push and pull rod 23 of the key lock 13 additionally acts on a lock shown in FIGS. 6 to 8, generally designated 28 for each locking rail 11. The locking rails 11 also each have an additional locking stud 29, which with Distance to the usual tunnel 12 arranged and which, in the closed position, locks 3 strikes a locking element, in the exemplary embodiment a displaceable bolt 30 of additional locking means 28 - in the transverse direction. In this locking position shown in Fig. 5, the additional locking bolt 30 of the lock 28 engages in the space between the studs 12 and 29, so that in this position, despite the opened locking washers 7, a displacement of the locking rails 11 now in their original locking position again in the opening direction is no longer possible. The latch 3 thus remain in this locked position shown in FIG. 5.

In this way, the second drive goes beyond the key lock 13 via a conventional emergency lock function, which has previously only been used to open a failing bolt work, because an emergency lock is also possible again, i.e. the door is brought into a closed position securing the contents of the cabinet can be.

One locking bolt 30 is acted upon by a projection 31 located at the end of the pull rod 23, the bolt 30 of the other additional locking 28 by a coupling piece 32 on the connecting rod 17 for the locking rails 11 and is displaceable in the same direction as this rod, so that the actuation of the key lock 13 from the position shown in FIG. 2 into the position shown in FIG. 3 moves the pull rod 23 and the connecting rod 17 upwards and thereby also allows these locking bolts 30 to emerge from their housings 33 upwards. This change in the position of the bolts 30 can also be seen on an enlarged scale when comparing FIGS. 6 and 8.

According to FIG. 4, the boltwork can now be pulled out of its Dashed open position can be brought into the closed position shown with dash-dotted lines with the help of the bumper 5. Thereafter, it can be secured in this position according to FIG. 5 in that the locking rails 11 return to their locking position with the help of the key lock 13 and the linkage 14 engaging thereon. However, they now do not interact with the still open locking disks 7, but via their locking studs 29 with the locking bolts 30 remaining in the closed position.

These locking elements designed as bolts 30 for the locking rail 11 can be fixed in their locking position shown in FIGS. 3 to 5 as well as 8 and 9, this being done in the exemplary embodiment by means of locking pins 36 which are automatically acted upon by springs 34 and jump into recesses 35 of the housing 33. This becomes particularly clear when comparing Figures 7 and 9. In FIG. 7, the locking pin, which is adjustable transversely to the bolt 30 by the spring 34, is retained within the outline of the bolt 30 in a corresponding receptacle 37, but the bolt 30 is displaced until the locking pin 36 then reaches the area with it aligning recess 35 arrives, it can automatically jump radially outward into the locking position and now fixes the locking pin 30.

6, the locking pin 30 can be held by a detent element 40 in a notch 38 under the pressure of a spring 39 so that it is not accidentally displaced by vibrations or the like, but with the help of the linkage 14 without problems Can be brought into the closed position.

The locking pins 36 of the locking elements can after Opening the door by means of the key lock 13 can be reached and released from the rear of the door facing the inside of a value container, so that a fitter can restore the original state once the drive 8 fault has been eliminated.

This drive motor 8 is expediently a servomotor which - as already mentioned - can be controlled from any point. An additional security can be that it can only be triggered by additional manipulation, for example by entering a personal identification number or the like.
Bolt mechanism 1 has a main drive, for example formed by an electric motor 8, for rotating locking washers 7 from a closed position into an open position, in which locking rails 7 cooperating with these locking washers 7 can be moved together with bolts 3 in the open position. In addition, a key lock 13 is provided, with which the locking rails 11 can be deflected or lifted so far that they can slide past the locking rails 7 when the bolt mechanism is actuated when the bolts 3 are withdrawn, that is to say unlocking remains possible even when the locking rails stand in the locked position and their drive motor 8 is disturbed. The locking rails 11 can also be locked in the closed position by an additional lock 28, even if the locking disks 11 are in the open position and their electric drive has failed in this position. Thus, a bolt work can be operated remotely via its main drive, ie the various locks can be released by remote control, after which the door is released for opening. However, if this electric remote control fails, a mechanical actuation option is available for both opening and closing the door.

Claims (16)

1. A locking mechanism (1) for safes or safe-doors or similar, including a driving linkage (9) or the like for transferring the opening and closing movement of at least one drive (8) to at least one locking device, for example to a locking disc (7) which forms part of the locking mechanism (1) and has an opening or locking recess (10) or the like, which locking device co-operates with a lock bar (11) or a similar counterpart directly or indirectly connected to the bolt(s) (3) in such a way that when the locking device is open the lock bar (11) is movable particularly in the direction of its longitudinal expanse together with the bolt(s) (3) into the opening position, by way of example a block, lug (12) or like stop arranged on the lock bar (11) enters the opening or locking recess (10) of the locking disc (7), characterized in that the lock bar (11) is displaceable from its position of use and that the locking mechanism (1) has a second drive provided for displacing the lock bar (11) from its position of use into a position in which the lock bar (11) is outside the radius of action of the locking device when lock bar and bolt(s) (3) are actuated, so that upon failure of the first drive the bolt(s) is/are movable and retractable even if the locking device is closed.
2. A locking mechanism as claimed in claim 1, characterized in that the locking device or locking disc (7) has an electric drive, particularly an electric motor (8) with gearing, for example for moving a drive linkage (9) for the locking device(s).
3. A locking mechanism as claimed in claim 1 or claim 2, characterized in that a mechanical lock, preferably a key-operated lock (13) is provided as the actuator for moving the lock bar (11) or like counterpart from the radius of action of the associated locking device and acts upon the displaceably mounted lock bar(s) (11) particularly by way of a rod linkage (14) connected thereto.
4. A locking mechanism as claimed in any one of claims 1 to 3, characterized in that the lock bar(s) (11) is/are slidably mounted or swivel-mounted to the bolt(s) (3) or to a cross-member (4) carrying the bolts (3) is/are guided in their position of use to their locking position, and that the guide and support for the use position and locking position of the lock bar(s) (11) is/are movable by means of the rod linkage (14) actuated by the lock (13) and thereby the lock bar(s) (11) is/are adapted to move or swing from the locking zone.
5. A locking mechanism as claimed in any one of claims 1 to 4, characterized in that at least two locking discs (7) and two lock bars (11) or similar counterparts are provided and are in each case jointly movable with one or the drives.
6. A locking mechanism as claimed in any one of claims 1 to 5, characterized in that in addition to the key-operated lock (13) provision is made for a combination lock (18) which blocks the actuation of the key-operated lock (13), particularly the removal of a carriage bolt receiving the key for opening, and releases the same after said lock has been opened.
7. A locking mechanism as claimed in any one of claims 1 to 6, characterized in that the electric drive, particularly an electric motor (8) operative for example by way of a worm gearing (19), acts upon rod (20) of the drive linkage (9), said push rod having one or a plurality of arms (21) for one or a plurality of lock discs (7) to be acted upon in spaced relationship to their pivot bearing, the coupling points (22) of said arms (21) to the locking discs (7) preferably being approximately opposite the locking recesses (10) thereof.
8. A locking mechanism as claimed in any one of claims 1 to 7, characterized in that the key-operated lock (13) acts upon a push or pull rod (23) which preferably runs transversely or at right angles to the lock bar(s) (11) and is operatively connected to the lock bar(s) (11).
9. A locking mechanism as claimed in any one of claims 1 to 8, characterized in that the pull rod (23) of the key-operated lock (13) acts upon the lock bars (11) by way of at least one lever (24), particularly a swivel-mounted one, or by way of a connecting rod (17) connecting said lock bars.
10. A locking mechanism as claimed in any one of claims 1 to 9, characterized in that for the displacement or swing movement of the lock bar(s) (11) from their position of use and in that the direction of displacement of the pull rod (23) of the lock (13) there are two swivel-mounted levers (24) provided between said pull rod (23) and the connecting rod (17), said levers overlapping each other at the ends (25) facing each other and being linked together.
11. A locking mechanism as claimed in any one of claims 1 to 10, characterized in that when the bolt(s) (3) is/are opened the locking bars (11) are guided and are movable in the direction of their longitudinal expanse and transversely of their connecting rod (17), for example by means of elongated slots (15) or the like.
12. A locking mechanism as claimed in any one of claims 1 to 11, characterized in that the push or pull rod (23) of the key-operated lock (13) additionally acts upon a barring device (28) for at least one, preferably each lock bar (11), and the lock bar (11) has an additional locking lug (29) which in the closed position of the bolts (3) butts against the respective barring element of the barring device (28).
13. A locking mechanism as claimed in any one of claims 1 to 12, characterized in that the barring element(s) of the additional barring device (28) are movable pins (30) or the like which are acted upon by projections (31) and/or couplings (32) at the pull rod (23) and/or connecting rod (17) of the locking bars (11) and are preferably movable in the same direction as said rods.
14. A locking mechanism as claimed in any one of claims 1 to 13, characterized in that the barring elements or pins (30) for the lock bar (11) are adapted to be located in their locking position for the lock bars (11), particularly by means of locking pins (26) automatically springing into recesses (35).
15. A locking mechanism as claimed in any one of claims 1 to 14, characterized in that after the door has been opened by means of the key-operated lock (13) the locking pins (36) of the barring elements held in their open initial position preferably through a catch are releasable from the door rear facing the interior of the safe.
16. A locking mechanism as claimed in any one of the preceding claims, characterized in that the driving motor (8) is a servomotor which is controllable from any location and is preferably operable only through an additional manipulation, for example through entering a personal identification number or the like.

Images