EP0065186A2 - Interlock assembly - Google Patents

Abstract

1. An interlock assembly (1) with at least one lock (2, 3) for at least one locking element (4) of a safe or strongroom door, in which a double-walled screen (8) is provided, the interior of which has a pressure difference relative to the outside environment, and in which at least one additional barring member (12) is provided which can be triggered by a change in pressure in the double-walled screen (8), characterised in that at least the lock housing or lock case wall itself facing the outside of the door is (are) constructed as a double-walled pressure tight screen (8), the interior (9) of the double-walled screen (8) is connected to at least one adjusting member (21) which holds the additional barring member(s) (12) in the open position but releases it (them) into a locking position if there is a change in pressure, and the screen (8) and the adjusting members (21) on which it acts are filled with gas or the like kept under pressure and are connected to a hydraulic pressure system for actuating the locking elements (4) of the door and the locks via at least one non-return valve (23) so that, in the event of any change in pressure in one of the two systems, the adjusting member(s) (21) actuate(s) the additional barring member(s) (12) into a locking position or release(s) it or them for a locking movement.

Description

The invention relates to a bolt work with at least one lock for at least one locking element of a safe or safe door, wherein a double-walled shield is provided, the interior of which has a pressure difference with respect to the external environment and at least one additional lock is provided, which is caused by a pressure change can be triggered in the double-walled shield.

To lock safe doors, steel and armored cabinets u. A variety of mechanical locking devices and bolt works are known in which the respective locking elements are controlled by one or more locks. Key locks and rotary locks are often combined and work together on the bolt work with one or more locking elements.

The unauthorized opening of such a door is made more difficult the more difficult it is to secure the security system e.g. B. overcome with breakthroughs, d. H. the longer the resistance time of the frame work against such destructive attacks.

It is known to increase the resistance time of a safe door in that me in the area of the locks Chan devices are provided which, when attacking the castle z. B. be severed and thereby bring additional locks between the door and frame into engagement.

From DE-AS 27 18 926 a protective door for objects with a high security requirement has become known, which is supposed to act as a double-walled shield and is filled with protective medium. Due to the large area that such a door generally has, very large forces occur in the cavity even at relatively low pressures. A large number of connection points between the two walls delimiting the cavity are therefore provided in this protective door. The size of these junctions disadvantageously allows the drilling of holes without damaging the cavity. Furthermore, large openings for actuators from 30 to 40 mm in diameter from the front are necessary in this protective door in order to be able to operate the bolt work properly. At these points, too, the bolt work can be attacked without damaging the cavity in the protective door containing the protective medium. In addition, it is provided that additional barriers between the door and frame come into engagement in the event of an injury to the cavity.

The invention has for its object to achieve an extension of the resistance time in a bolt work of the type mentioned by making a multiple of breakthroughs necessary for an unauthorized opening of such a door, wherein an injury to the above-mentioned shielding blocks the bolt work of the door itself shall be.

The main solution to this problem is that at least the lock housing or lock case wall itself is (are) designed as a double-walled pressure-tight shield, that the interior of the double-walled shield is connected to at least one adjusting element which holds the additional lock (s) in the open position, in the event of pressure change but in the sense of a lock releases and that the shield and the adjusting elements acted upon by it are filled with gas or the like which is under pressure and are connected in this way to a hydraulic pressure system for actuating the locking elements of the door and the locks via at least one check valve that when the pressure in one of the two systems changes, the adjustment element (s) trigger the additional lock (s) in the sense of a lock or release them for their locking movement. So is a mechanical breakthrough z. B. tried with the help of a drill, the double-walled shield is inevitably destroyed and thus brings about the pressure change mentioned. The first breakthrough inevitably triggers at least one additional lock, which increases the resistance time against unauthorized opening of the door. Since several locks and also several locking elements are generally provided, the risk of unauthorized opening can be considerably increased in this way.

A preferred embodiment of the invention can consist in that the lock case walls standing at right angles to the outward-facing lock housing wall are designed as double-walled, pressure-tight shielding. In the event of a frontal attack, as well as an oblique or even a rearward attack on the lock, the aforementioned triggering of the additional lock is achieved when the double wall is destroyed.

In order to further enable a conventional structure inside the lock, it is advantageous if at least one of the double-walled lock case walls is detachably attached to the rest of the lock case and its interior pressure-tight with that of the rest of the interior of the lock case, preferably via a flexible line, in particular one is connected helically wound line attacking at the edge. Through this detachable lock case wall, the inside of the lock case remains accessible in the usual way, the lateral helical winding giving sufficient mobility when opening and closing and assembling the lock. Nevertheless, the desired double-walled and, in particular, pressurized shielding results around the inside of the lock, the destruction of which leads to a change in pressure and thus to the triggering of additional blocking measures.

It is expedient if the locking elements of the door can be locked and / or unlocked hydraulically and / or pneumatically and / or released. This enables particularly good coupling of the actuation and the additional safety measures, which are also based on a pressure actuation.

The inside of the double-walled shielding of the locks can be under pressure. This allows higher pressure differences to be achieved than with a vacuum.

The movement of the key or rotary knob of the lock or locks can be transferred hydraulically to the locking element or elements of the door. Hydraulic transmission works essentially without delay, since liquids are practically incompressible. An embodiment is expedient in which Lock and on the associated, controlled and acted upon locking element, a pair of pressure-dependent adjusting elements is provided, one of these adjusting elements for performing the closing movement and the other for performing the releasing movement and the pressure medium from the key or rotary knob or the like the volume of the adjusting element of the lock, which is reduced in volume, is effective in the adjusting element of the locking element which is thereby enlarged. In this expedient embodiment of the invention, the key rotation or the actuation of the rotary knob is therefore not transmitted to a mechanical bolt and an associated bolt mechanism, but rather via adjusting elements and a pressure medium. As a result, a connection to the pressure system of the lock shielding can be established in a manner yet to be described, because this arrangement means that both lock actuations (open and closed) are passed on as pressure force, so that no negative pressure occurs.

An embodiment of the invention of its own worthy of protection, which can also be used independently of the security system according to the invention when actuating bolts or the like in the interior of safe doors, consists in that a bellows is provided as the pressure and volume-dependent adjusting element. This eliminates sealing and valve control problems that can occur with pistons and power cylinders. A bellows with a connected line can be made so tight that there is no fear of loss of liquid or gas even over long years, especially since these adjustment elements can only be actuated from time to time inside the safe doors. The pressure lines for connecting the adjustment elements, which are preferably designed as bellows, can all be twisted together, so that even in the event of an attack outside a shield does not make it clear which line belongs to which lock, to which adjustment element or to which pressure system.

Various gaseous or liquid pressure media can be used for the above-described pressure systems. In the invention, it is advantageous that the shield and the adjustment elements acted upon by it - as already mentioned - are filled with gas or the like under excess pressure and with the hydraulic, that is to say liquid-filled, pressure system for actuating the locking elements of the door and the locks at least a check valve are connected in such a way that when the pressure changes, in particular when the pressure is reduced, in one of the two systems the adjustment element or elements trigger the additional lock in the sense of a lock or release it for its locking movement. It has also already been mentioned that hydraulic actuation of the locking elements when turning a key or rotary knob is advantageous because this takes place practically without delay and non-positively due to the incompressibility of the medium used. For the additional security, however, a gas under pressure is advantageous, since gases when the outer skin of the system, e.g. B. the shield, a line or the like. Escape faster and thus the additional lock is effective faster. In addition, it follows from these measures that disconnection of any line leads to a drop in pressure and thus to the triggering of the emergency lock, while disconnecting the lines results in blocking the transmission of movement from the lock to the locking element. The non-return valve mentioned carefully separates the different media from one another, but inevitably transfers a pressure drop in the hydraulic system to the pneumatic system, what triggers the emergency lock.

The additional locks of the locking element are held in the open position against a restoring force, preferably against the force of springs. This enables normal functioning of the locks and of the locking element or elements, which can preferably be carried out hydraulically in the manner described. Only when the additional locks are triggered does the restoring force become effective in the sense that these locks are engaged and the locking element is blocked, so that the locking element can then no longer be actuated, that is to say cannot be opened when the door is closed. The additional lock can have several, preferably three or four lock points, or a corresponding number of locks that can be triggered at the same time can be provided, which further increases the resistance time, since each of these lock points or locks would have to be removed again by means of a separate breakthrough.

The additional locks or locking points of the locking element are expediently under spring force and are held back by a preferably circumferential loop or the like from their outward locking movements, the loop having at least two overlapping eyelets in the open position of the lock, into which a removable pin or the like intervenes and keeps the loop closed. If this pin is removed, the loop is thus open, so that the spring forces of the lock take effect and cause it to snap into the locked position. The pin can be held in the eyelets of the loop, preferably a wire loop, by the pressurized bellows and can be withdrawn from the eyelets if the pressure drops by a restoring force, in particular of the bellows and / or a spring be. If the pressure in the safety system suddenly drops due to an unauthorized attack, the pin is withdrawn, the wire loop and thus the lock released. To block the locking element can be provided as additional locks or locking points, in particular stainless steel leaf springs, preferably at least three or four or even more leaf springs, which are held against each other by the loop and, after releasing the loop, snap apart and engage in corresponding counter-recesses. This represents a structurally simple solution in which, with the aid of a single pin and a single wire loop, several additional locks can be kept open at the same time or released for their locking movement. Even a breakthrough that would damage the wire loop would bring all additional locks into their emergency locking position.

It is expedient if a rotatable or pivotably mounted locking element according to DE-OS 29 28 239 is provided, which is in the locking position or the like after releasing the loop. Such a locking element in turn has a plurality of teeth or projections which are in engagement with one another in the locking position, so that here, too, a single opening would not be sufficient for opening. Rather, the choice of the size of the individual toothing can also be used to produce ratios which, for. B. make at least four breakthroughs with a correspondingly long time required to put the locking element out of function.

The pin for the wire loop or the like and / or the actuating rods or the like acting on the bellows are expediently hollow and are connected to the printing system. This ensures that even at very precise knowledge of the door structure would lead to an attack on these tools to trigger the emergency lock. The bellows can be made of metal, in particular for a long service life and great operational reliability.

The invention allows a further embodiment of its own worthy of protection, which consists in that a pressure switch is preferably attached to the pressure system for monitoring the lock cases or the like. Should the pressure drop over the years and decades, this can prevent the boltwork from becoming unsuitable and possibly finally locked at an unfavorable moment. It can be provided that the pressure switch is designed as a bellows or the like. Adjusting element, the actuating rod or the like of which acts directly or indirectly on a locking pin or the like or forms this, which, in the event of a pressure drop, into a groove in a locking shaft or the like Part of the bolt work, preferably the locking element, whose end is arranged in such a way that the engagement is only possible when the door is open and the bolt shaft or the like is shifted accordingly. If the pressure in the monitoring system actually gradually drops below a preselectable limit, the locking pin mentioned has a tendency to be pressed against this locking shaft or the like due to the action of the bellows or the like, but only afterwards into the groove mentioned Opening the door can occur. If the locking pin has entered the groove after the door has been opened, it is initially no longer possible to close the door and care must then be taken to ensure that the monitoring system regains its operating pressure. The locking pin or the like can be held by the pressurized bellows against the force of a spring in the open position, the lock pin and the bellows are preferably arranged parallel to each other and have a cross connection on their end faces facing away from the locking shaft. This represents a space-saving yet effective arrangement that can be easily accommodated within a safe door in the area of a bolt shaft.

Especially when combining one or more of the measures described above, there is a bolt work in which an unauthorized attack with breakthrough tools results in the triggering of a selectable number of additional locks, so that the resistance time of a suitably equipped door is increased considerably.

• Fig. 1 eine Ansicht des Sperr- und Riegelsystemes einer Tresortüre od. dgl., wobei Schlösser auf Sperrelemente für das eigentliche Riegelwerk einwirken,
• Fig. 2 eine schematische Anordnung der zur hydraulischen Betätigung der Schlösser und Sperrelemente vorgesehenen Verstellelemente sowie der zur zusätzlichen Sicherung der Schlösser vorgesehenen pneumatischen Verstellelemente mit den dabei abgeschirmten Schloßkästen od. dgl.,
• Fig. 3 einen horizontalen Schnitt durch ein ringsum mit einer doppelwandigen unter Druck stehenden Abschirmung versehenes Drehknopf-Schloß, dessen Drehbewegung hydraulisch auf ein Sperrelement übertragbar ist,
• Fig. 4 einen vertikalen Schnitt durch das Schloßgehäuse gemäß Fig. 3, wobei das Schloß selbst in Schließposition steht und seine Verbindung zu einem Sperrelement erkennbar ist,
• Fig. 5 eine der Fig. 4 entsprechende Darstellung, wobei das Drehknopf-Schloß in geöffneter Position dargestellt ist,
• Fig. 6 eine Der Fig. 3 entsprechende Darstellung eines Schlüsselschlosses mit rungsum als Schloßkasten ausgebildeter doppelwandiger und unter Gasdruck stehender Abschirmung,
• Fig. 7 einen vertikalen Schnitt durch das Schloß gemäß Fig. 6 in Schließstellung und
• Fig. 8 eine der Fig. 7 entsprechende Darstellung des Schlüsselschlosses nach dem Aufschließen,
• Fig. 9 eine Draufsicht eines auf die eigentlichen Riegel oder deren Antriebselemente wirkenden Sperrelementes mit einer Einrichtung zur Notverriegelung bei Zusammenbruch des Druckes im hydraulischen und/oder pneumatischen System,
• Fig. 10 eine Seitenansicht des Sperrelementes mit Notverriegelung sowie
• Fig. 11 eine gegenüber Fig. 10 um 90 gedrehte Seitenansicht des Sperrelementes mit Notverriegelungseinrichtung und
• Fig. 12 teilweise im Schnitt einen Druckwächter, der auf eine Betätigungsstange od. dgl. des Riegelwerkes wirkt.

The invention is described in more detail below with its details that are essential to it, using the drawing. It shows in a partially schematic representation:

• 1 is a view of the locking and bolting system of a safe door or the like, with locks acting on locking elements for the actual bolt work,
• 2 shows a schematic arrangement of the adjusting elements provided for the hydraulic actuation of the locks and locking elements as well as the pneumatic adjusting elements provided for the additional securing of the locks with the shielded lock cases or the like.
• 3 shows a horizontal section through a rotary knob lock provided all around with a double-walled, pressurized shield, the rotary movement of which can be transferred hydraulically to a locking element,
• 4 shows a vertical section through the lock housing according to FIG. 3, the lock itself being in the closed position and its connection to a locking element being recognizable,
• 5 shows a representation corresponding to FIG. 4, the rotary knob lock being shown in the open position,
• 6 a representation corresponding to FIG. 3 of a key lock with a double-walled shield which is designed as a lock case and is under gas pressure,
• Fig. 7 is a vertical section through the lock of FIG. 6 in the closed position and
• 8 shows a representation of the key lock corresponding to FIG. 7 after unlocking,
• 9 is a plan view of a locking element acting on the actual bolts or their drive elements with a device for emergency locking when the pressure in the hydraulic and / or pneumatic system collapses,
• Fig. 10 is a side view of the locking element with emergency locking and
• 11 is a side view of the locking element with emergency locking device rotated by 90 relative to FIG. 10 and
• Fig. 12 partially in section a pressure switch, which acts on an actuating rod or the like. The bolt work.

In the German patent specification 21 38 537 an example of a locking system or locking mechanism of a safe door or the like is described in more detail. It is particularly shown how, with the help of key or rotary knob locks and also with the help of emergency locks via bumpers or tie rods, a common crossbeam for the actual bolts can be acted on in order to lock these bolts in the closed position or for one To release opening movement on the actual operating handle of the door. The invention also applies to a system with z. B. only a lock with bolt (s).

FIG. 1 shows a bolt work of this type, denoted as a whole by 1, the parts which are not relevant for the present invention, such as the bolt itself, its connecting cross member, etc. being omitted. In this exemplary embodiment according to FIG. 1, a bolt work 1 with two locks, a permutation or combination lock 2 and a key lock 3, is shown. Of course, even more such main locks can attack the bolt work of a safe door. There may also be emergency locks. Each of these locks controls an associated locking element of the safe or safe door, generally designated 4. The two locking elements 4 provided in the exemplary embodiment block the actual bolt work in the closed position, of which a transmission rod 5, a gear 6 for deflecting the movement and a push or pull rod 7 are shown, with the transmission rod 5 and further gear 6 also providing other such Tension rods 7 can be applied, on which the already mentioned crossbar with the actual bolts can each be attached to the end face 7 a.

In a known manner, 2 and 3 blocks the locking elements 4, so that withdrawal of the tie rods 7 with the bolts is blocked. Only after opening all the main locks 2 and 3 are the locking elements 4 released so that the tie rods 7 and thus the bolts of a door secured in this way can be withdrawn.

If the locking elements and / or the locks were forcibly destroyed with the help of an unauthorized breakthrough through the safe door in order to cancel their function, unlocking could also take place in this way. The greater the resistance time of the entire safe door to such unauthorized manipulation, the more effectively this is hindered. H. for example, the more such breakthroughs are necessary to disable the locking of the bolt work 1. An increase in the number of main locks and locking elements has structural and financial limits. In addition, a bolt work 1 for more and more locks due to the various transmission rods, levers and the like that are then necessary. The like. Compiled and possibly more prone to failure. In the embodiment, therefore, a special emergency locking is provided to increase the resistance time of the entire bolt work 1, which inevitably comes into action when a breakthrough is attempted on a lock, a locking element or any other part important for locking the safe door.

For this purpose, the locks 2 and 3 according to FIGS. 3 to 8 are each provided with a double-walled shield forming the lock case or the lock housing 8, the interior, ie the space 9 between the two boundaries 10 and 11 of this double-walled shield 8 towards the outside environment has a pressure difference, in the exemplary embodiment is under positive pressure. Furthermore, additional locks 12 to be described in more detail are provided on the basis of FIGS. 9 to 11, which can be triggered by a change in pressure in the sense that they then reach their blocking or locking position and thereby prevent unlocking of the locking elements 4.

If a breakthrough is attempted on a lock 2 or 3 equipped in this way and the outer boundary 11 of the shield or the lock housing 8 is violated, the pressure therein escapes, which leads to the pressure change mentioned, as a result of which the additional locks 12 come into operation. For an unauthorized opening of the safe door, a corresponding number of additional openings must be made to remove these additional locks 12, which in the exemplary embodiment with four additional locks 12 on each of the locking elements 4 leads to the fact that first both locks 2 and 3 and then a total of eight additional locks 12 must be deactivated. Due to the easily possible large number of teeth 13 on the actual locking element 4, a comparable resistance time is achieved when these parts of the bolt work 1 are attacked.

It is part of this additional security system that an attack on the parts used to transmit the lock actuations to the locking elements 4 leads to the triggering of these additional locks 12. Accordingly, the movement of the key or rotary knob of the lock or locks can be transferred hydraulically via corresponding lines 14 to the locking elements 4 of the door. Since the hydraulic and the pneumatic safety pressure system with each other in a manner to be described linked, a pressure drop in one of these lines 14 also triggers the additional locks 12.

In Figures 3 and 6 it can still be seen that one of the double-walled lock case walls or shields 8 is detachably attached to the rest of the lock case and its interior or interspace 9 with the rest of the interior or interspace of the shield 8 is pressure-tight via a flexible line 15 , which belongs to the double-walled shield 8, is connected. This line 15 is helically wound and engages near a hinge 16 in the edge area facing each other wall parts, so that the detachable plate can be opened and closed, even if it is under pressure. This facilitates the assembly or possible maintenance and repair work as well as, if necessary, changes of the tumblers inside the lock 2 or 3. Nevertheless, all-round shielding for the inside of the lock is achieved, so that openings leading obliquely against the lock or even from the back of a safe the castle led breakthrough attacks to trigger the emergency lock with the help of the additional locks 12. The locking elements 4 of the door can therefore be locked and / or unlocked hydraulically and / or pneumatically.

In particular, it is provided that a pair of pressure-dependent adjusting elements 17 and 18 is provided in the respective lock 2 or 3 and on the associated locking element 4, one of these adjusting elements 17 in the lock for carrying out the closing movement and blocking and the other for carrying out the release movement of the locking element 4 are provided and the pressure medium in these adjusting elements 17 and 18 and the lines 14 connecting these are pressed in each case by the adjusting element 17 of the lock, which is reduced in volume by means of a key or rotary knob or the like, to the adjusting element 18 of the locking element which is thereby enlarged. The enlargement of this one adjustment element 18 of the locking element simultaneously causes a reduction in the size of the second adjustment element 18 of the locking element due to the pressure compensation, which in turn leads to an increase in the pressure or then the volume of the second adjustment element 17 of the lock. In the event of a reversed movement of the key or rotary knob, this adjusting element, which has an increased volume, is now acted upon, as a result of which a reversed flow of the pressure medium and thus a reversed actuation of the locking element 4 can be brought about.

Especially in FIGS. 4 and 5 and 7 and 8, it can be seen that the adjusting elements 17 provided in the interior of the lock 2 or 3 are arranged next to one another, but in opposite directions with regard to their directions of movement, and a Z-shaped connecting element or transmission part 19 for their actuating rods or - have pins 20. The mode of operation of this arrangement becomes clear when comparing FIGS. 4 and 5 or 7 and 8. If the connecting part 19 is lowered when the lock is locked, it is raised by the opening movement of the lock, as a result of which the actuating pin 20 of the adjusting element 17 shown on the right in the exemplary embodiment is pressed in , while the oppositely arranged actuating pin of the second adjusting element 17 17 makes room for the same amount, so that the hydraulic medium can flow accordingly and cause the desired movements.

In the locking elements 4 is in the embodiment seen that the adjustment elements 18 attacking there are aligned with one another, but are directed toward one another with their actuating pins 20. If the pressure medium is displaced or compressed in the one adjustment element 18 of the locking element 4, a corresponding evasive movement follows on the second adjustment element 18.

According to a very important feature of the bolt work 1 with the locks 2 and 3, bellows are provided as pressure and volume-dependent adjusting elements 17 and / or 18. This eliminates sealing problems or the risk of pressure losses, for example between a piston and its cylinder wall, as can occur with adjusting elements designed as working cylinders.

In Figures 3 to 8 it can be seen that the pressure lines 14 for connecting the adjusting elements 17 of the locks with the adjusting elements 18 of the locking elements 4 are twisted together. As a result, in the event of a breakthrough through the outside of the door, which line leads to which adjusting element is obscured, so that even disconnecting the lines cannot lead to overcoming the bolt work 1. Rather, disconnecting one or more of the lines 14 would result in the entire actuation system being blocked. An injury to the lines, on the other hand, leads to the pressure drop already mentioned with the resulting triggering of the emergency interlocks.

The interior or the intermediate space 9 of the double-walled shield 8 is also connected to at least one adjusting element 21, which holds the additional lock 12 in the open position in a manner to be described, but in the sense of a change in the pressure in the pressure system Lock releases. In this case, a bellows is again provided as the adjusting element 21 holding the lock 12 in the open position and, like the others, enclosed by a housing 21 a.

The double-walled shields 8 and the adjustment elements 21 acted upon by them are filled with gas or the like under pressure in the exemplary embodiment. A corresponding storage container 22 in the form of a print cartridge can be seen in the schematic representation of FIG. 2. This print cartridge 22 attached to the pneumatic pressure system can in particular be attached interchangeably, so that from time to time the nominal pressure is repeated by replacing the print cartridge 22 can be manufactured if slight pressure drops should occur over the years.

2 shows in particular that the pressure system under gas pressure is connected to the shields 8 of the locks, the associated adjusting elements 21 and the storage container 22 via check valves 23 such that when the pressure changes, that is to say in the exemplary embodiment when the pressure is reduced, in one of the two systems, that is to say either in the hydraulic or in the pneumatic system, the one or more adjusting elements 21 trigger the additional locks 12 in the sense of locking or blocking or release them for their locking movement. In an unusual way, two different print media are provided for different tasks, but the two pressure systems are connected in such a way that the pressure drop in one of these two systems triggers the emergency lock. It is advantageous that the lock movements can be transmitted hydraulically, ie non-positively and without compliance of the pressure medium, while the shielding mung is pneumatically secured, because gas escapes from a breakthrough faster, so that a correspondingly quick response of the emergency lock takes place.

The already mentioned emergency locking with the help of the additional locks 12 is realized in the exemplary embodiment in that these additional locks 12 are held in the open position against a restoring force, namely against the force of springs 24. In the exemplary embodiment, this results in a simplification in that, for blocking the locking element 4, additional leaf springs, that is to say the springs mentioned, preferably made of stainless steel, are provided as additional locks 12, a total of four such springs 24 with corresponding counter-recesses 25 together forming the additional locks 12 .

For the emergency lock are 4, z. B. three or four blocking points as provided in the exemplary embodiment

In FIGS. 9 to 11 it can be seen that the additional locks 12 of the locking element 4 - since they have leaf springs 25 - are under spring force and are held back from their outward locking movements by at least one preferably circumferential loop 26 or the like. The loop 26 has two eyelets 27 or the like which overlap in the open position of the locks 12 or in the tensioned position of the springs 24 and in which a removable pin 28 or the like engages and thus the loop 26 also against the force of the Keeps springs 24 closed. The pin 28 is held by the pressurized bellows 21 in the eyelets 27 of the loop 26, preferably a wire loop, and in the event of pressure drop by a restoring force, in particular the Bellows 21 itself and / or a spring 29 retractable from these eyelets. It is obvious that after pulling back the pin 28, the loop 26 yields to the force of the springs 24 so that they can engage in the counter-recesses 25. The emergency lock is now complete. If the pressure in a shield, a line or an adjusting element breaks down somewhere in the entire bolt work 1, this has the effect of a retraction movement of the pin 28, which leads to the aforementioned emergency locking.

A significant improvement of this protection is still that the pin 28 for the wire loop 26 or the like. And / or the actuating rods 20 acting on the bellows 17, 18 or 21 are hollow and are connected to the printing system. Even a direct breakthrough attack on one of these actuators would thus trigger the emergency locks.

It should be mentioned at this point that the bellows suitably consist of metal, which on the one hand leads to great tightness and a long service life, and on the other hand also enables the incorporation of restoring forces, for example in the case of the bellows 21.

The locking element 4 mentioned several times corresponds essentially to the locking element described in DE-OS 29 28 239, it being in the locked position after the release of the loop 26 and also remains because of the destruction of the lock functions. The gears 13 already mentioned can be executed in such a number that a breakthrough attack on this blocking element 4 would also make a large number of breakthroughs necessary to overcome this obstacle, which would lead to leads to a correspondingly long resistance time.

Although leakage losses in the pressure systems are not to be expected in today's hydraulic and pneumatic technology, in the exemplary embodiment a pressure monitor, generally designated 30, is preferably attached to the pressure system for monitoring the lock cases 8 or the like. The pressure switch is essentially designed as a bellows or the like. Adjusting element, the actuating rod 31 - which can also be hollow - acts directly or indirectly on a locking pin 32 or the like, which in the case of pressure drop into a groove 33 or the like Recess of a bolt shaft 34 or the like engages part of the bolt mechanism 1, the end 35 of which is arranged such that the engagement is only possible when the door is open and the bolt shaft 34 or the like is correspondingly displaced. If necessary, direct cooperation of the actuating rod 31 with the groove 33 is also possible. In addition, a projection or the like can also be provided instead of a groove, which cooperates with a corresponding counter-coupling piece when this is correspondingly displaced by the bellows when the pressure drops.

The locking pin 32 or the like is held in the open position by the pressurized bellows 30 against the force of a spring 36, the locking pin 32 and the bellows 30 being arranged parallel to one another in this special case and on their end faces remote from the locking shaft 34 have a cross connection 37. If the restoring forces in the bellows itself are sufficiently strong, the additional spring 36 could possibly be omitted. In addition, the bellows could be arranged in continuation of the locking pin 32 if there is enough space. This entire arrangement can be seen in FIG. 12 and furthermore that the end 38 of the wire loop 26 holding pin 28 is conical in order to approximately compensate for friction forces occurring when the pin 28 is withdrawn.

• Läßt wider Erwarten in dem Drucksystem der die Notverriegelung offenhaltende Druck allmählich etwas nach, wird der Stift 28 allmählich zurückweichen, so daß die Drahtschlinge 26 aufgrund der Konizität des Endes 38 dieses Stiftes 28 etwas nachgibt. Gleichzeitig wird jedoch dafür gesorgt, daß der Sicherungsstift oder Sperrstift 32 auf dem Riegelschaft 34 aufsitzt und aufgedrückt wird. Wird das Riegelwerk 1 geöffnet, gelangt die Nut 33 in den Bereich dieses Stiftes 32, so daß er in die Nut eintreten kann. Damit ist verhindert, daß das Riegelwerk wieder geschlossen werden kann, bevor nicht in den Drucksystemen wieder der Nenndruck hergestellt und eventuelle Undichtigkeiten beseitigt sind.

The function of the pressure switch 30 is as follows:

• If, unexpectedly, the pressure in the pressure system which keeps the emergency lock open gradually decreases, the pin 28 will gradually recede, so that the wire loop 26 yields somewhat due to the taper of the end 38 of this pin 28. At the same time, however, it is ensured that the locking pin or locking pin 32 sits on the locking shaft 34 and is pressed on. If the bolt work 1 is opened, the groove 33 comes into the area of this pin 32 so that it can enter the groove. This prevents the frame work from being closed again before the nominal pressure has not been restored in the printing systems and any leaks have been eliminated.

It should also be mentioned that the printing system or systems of the boltwork 1 according to the invention can be connected to an alarm system which can be triggered by a drop in pressure. This pressure system then has a dual function, in that it triggers the emergency lock on the one hand in the event of an injury and on the other hand this alarm system.

The entire bolt system 1 increases the resistance time of a safe door against mechanical attacks in that damage, whether in the casing of the locks, be it on the parts available for the transmission of the lock movements, leads to an emergency lock, which requires a corresponding number of additional breakthroughs, be it because the proposed locking elements themselves would make many breakthroughs necessary.

All features and construction details shown in the description, the claims, the summary and the drawings can have significant meaning both individually and in any combination with one another.

Claims (10)

1. Bolt with at least one lock for at least one locking element of a safe or safe door, wherein a double-walled shield is provided, the inside of which has a pressure difference with respect to the external environment and at least one additional lock is provided, which is caused by a pressure change in the Double-walled shield can be triggered, characterized in that at least the lock housing or lock case wall facing the outside of the door itself is (are) designed as a double-walled pressure-tight shield (8) such that the interior (9) of the double-walled shield (8) with at least one adjusting element ( 21) is connected, which holds the additional lock (s) (12) in the open position, but releases them in the sense of a lock when the pressure changes and that the shielding (8) and the adjusting elements (21) acted upon by it are under overpressure standing gas or the like are filled and with a hydraulic pressure system for actuation the locking elements (4) of the door and the locks are connected via at least one non-return valve (23) in such a way that when the pressure changes in one of the two systems, the adjusting element (s) (21) has the additional lock (s) (1- 2) trigger in the sense of a lock or release for its locking movement. 2. Bolting according to claim 1, characterized in that the lock case walls standing at right angles to the outwardly facing lock housing walls are designed as double-walled pressure-tight shields (8). 3. Bolt with lock according to claim 1 or 2, characterized in that at least one of the double-walled lock case walls is detachably attached to the lock case and its interior pressure-tight with the rest of the interior preferably via a flexible line (15), in particular a helically wound, line attacking at the edge is connected. 4. Bolt with lock according to one of claims 1 to 3, characterized in that the locking elements (4) of the door can be hydraulically and / or pneumatically locked or locked and / or released. 5. Bolt with lock according to one of claims 1 to 4, characterized in that in the lock (2; 3) and on the associated locking element (4) a pair of pressure-dependent adjusting elements (17; 18) is provided, one of which Adjusting elements (17) for carrying out the closing movement and the other for carrying out the releasing movement are provided, and the pressure medium in each case is reduced by the adjusting element (17) of the lock, which is reduced in volume by means of a key or rotary knob or the like, in the adjusting element (18) of the lock which is thereby enlarged Locking element (4) is effective. 6. Bolts with lock according to one of the preceding claims, characterized in that as a pressure and volume-dependent adjusting element 17 and / or 18 and / or 21) a bellows preferably made of metal is provided. 7. Bolt with lock according to one of claims 1 to 6, characterized in that the pressure lines (14) for connecting the preferably designed as bellows adjustment elements (17, 18, 21) are all twisted together. 8. Bolt with lock according to one of claims 1 to 7, characterized in that the additional locks (12) or locking points of the locking element (4) are under spring force and by at least one preferably circumferential loop (26) or the like outward blocking movements are restrained, the loop (26) having at least two eyes (27) overlapping in the open position of the block (12), into which a removable pin (28) or the like engages and so the loop (26) closed 9. Bolts with lock according to one of claims 1 to 8, characterized in that the pin (28) for the wire loop (26) or the like. And / or the actuating rods (20, 18, 21) engaging on the bellows (17 ) or the like. are hollow and are connected to the printing system. 10. Bolt with lock, in particular according to one of the preceding claims, characterized in that preferably on the pressure system for monitoring the lock cases (8) or the like. A pressure switch (30) is attached and that the pressure switch (30) as a bellows od. Like. Adjusting element is formed whose actuating rod (31) or the like acts directly or indirectly on a locking pin (32) or the like. or forms this, which in the case of pressure drop into a groove (33) or the like. Recess of a locking shaft (34) or the like. Part of the bolt work (1) engages, the end of which is arranged so that the engagement is only possible when the door is open and the bolt shaft or the like is shifted accordingly.

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