EP0445531B1 - Supervision device of the closed position of a pivoting shutter, especially of a safe door - Google Patents

Description

The invention relates to a device for monitoring the closed position of a pivotable closure according to the preamble of claim 1.

Such a device is known from DE-C-473 292. When the length changes by swinging open a lock, a tensioned protective wire is used to close an alarm circuit using a friction clutch. The protective wire is freely accessible on the side of the closure after which it is pivoted when it is opened. It is therefore freely accessible from this opening side and could therefore be manipulated in a simple manner. This would be completely useless, especially with secured rooms or containers and in particular armored cabinet doors.

It has also become known to accommodate an indication of the angular position of such a lock or door encapsulated in its hinge, as described in Wo 79/01028. However, there is also one Manipulation or simulation of a certain functional position, for example with the help of glue or the like and thus avoiding circumvention of the monitoring, or in the encapsulated arrangement of a lock on the door hinge, an influence on the associated lock is not excluded and, above all, this known device cannot be or do not retrofit it, for example, to armored cabinet doors that have already been installed.

It is therefore an object of the invention to provide a device according to the preamble of claim 1, which is not accessible to manipulation or interference even when the door or lock is open and can also be installed subsequently on or in such locks or doors, this device being used simultaneously should be able to be used as sabotage protection.

This object is achieved with the features of the characterizing part of patent claim 1.

Such an arrangement can be installed easily - even on an existing lock or door, i.e. also retrospectively, and is largely resistant to manipulation due to the simplicity of the construction but also because of the accommodation inside the door or a lock housing due to the protected accommodation secured. At the same time, the mechanism is very simple and therefore little or not susceptible to failure, since it can be exploited that two spaced-apart fastening points have pivotable parts, one of which is carried by the pivoting of the other, at their ends different, distant paths or Describe curves so that these differences in path when pivoting the closure to Operate a switch, a lock or another signal or actuator can be used.

If the lock or the door is opened, the pivot center lies in the hinge of this door, while the pulling element is pivoted and / or bent relative to an area which is offset by a distance from it and which is arranged on a stationary inner wall of the locked space, so that its free end is opposite want to remain in its original position relative to the lock or door more and more towards its hinge. In the case of reverse pivoting, this end or the end region is pushed relative to the inside of the lock or the door away from its hinge or withdrawn into an initial position and can thereby actuate the switching element of a switch or a mechanical lock.

Since the pulling element is an electrical cable which has at least two cores and which, when interrupted, triggers a display and / or an alarm, the device can be used at the same time as a tamper protection device, because the above-mentioned display and / or alarm is triggered when the cable is cut. The tension element thus has a double function.

It should be added at this point that the traction element, in a manner to be described in several exemplary embodiments, expediently be a tensile and pressure-resistant, deflectable or flexible rod-shaped part transverse to its longitudinal extension, for example in any cross-sectional area, that is to say a kind of rod or stable cable can, which part is still referred to as "tension element" in the following.

In order to simultaneously achieve the greatest possible protection against destruction of the device or manipulation, the passage of the pulling element through the narrow side of the door and the outside thereof can be arranged behind at least one fold or the passage through the lock housing behind the door fold, in particular behind the door be. Overall, the tension element is thus largely moved into the interior of the lock or the door or the lock case, where manipulation is therefore almost impossible. In addition, however, the passage of the tension element is at least inaccessible when the closure is closed.

It is also expedient if the entry of the tension element from its anchoring point into the narrow side of the lock or into the lock housing is designed as a funnel-shaped opening which narrows from the outside inwards, the narrowest point of which in cross section is equal to or slightly larger than the cross section of the tension element is. This can take into account the fact that when opening and thus pivoting the door, the rod in the passage area not only has to perform a relative sliding movement with respect to the passage, but at the same time is bent or deflected in particular at this point and then lies against this funnel wall can.

At the free end of the pulling element, a switching bolt or actuator can be arranged, directly or indirectly, with which the switching element of an electrical switch and / or a locking piece of a lock for the bolt or for a drive part of the bolt in the sense of keeping this lock open when the lock is in the closed position is acted upon. If the switch is actuated, the closed position is displayed or, if the closure is not completely closed, there is a corresponding display or reaction signaling this open position. In addition or instead, a lock can be actuated so that the bolt can only be moved into its closed position when the lock or the door is fully closed, so that mechanical monitoring of the closed position is also possible, because only when the bolt is closed also the final closed position of the lock or the door means and closing the bolt past its bolt recess when the door is only ajar can be prevented by the lock.

A smooth and well-protected arrangement results when the pulling element with its switching pin or the like is mounted in a guide tube arranged transversely to the pivot axis of the lock or the door, in the case of a vertical pivot axis horizontal, on the end of the switching pin facing away from the hinge when the guide element is closed Door protrudes and into which this switching pin is at least partially retractable when the door is opened. This retraction is brought about by the relative movement already mentioned when the closure is pivoted open.

The cross section of the switching pin can correspond approximately to that of the guide tube. This results in a defined deflection and relative movement of the switching pin with respect to the closure and the opening and closing switching element of a switch or a lock provided there.

The tension element can be constructed in the manner of a flexible shaft or can be composed of tensile and pressure-resistant members that can be pivoted relative to one another, provided that it is not designed as a cable. The deformability is important at least over the length of the tension element, which lies between its fixed anchoring and the area that penetrates the passage into the door or the lock housing when the door is fully open. A flexible shaft is a very inexpensive component, which nevertheless has high stability and, with good flexibility, also good compressive strength.

In the guide tube, a relative movement of the switching pin relative to the guide tube can also be arranged between the end of the switching bolt projecting radially from the rod and an abutment spaced therefrom, preferably the insertion funnel for the pulling element, in the guide tube or flexible rod. This spring has the additional advantage that it serves as a spacer between the tension element and the inside of the guide tube, so that the deflected tension element can not or hardly lay against the inside of the guide tube and could make actuation difficult due to high frictional forces.

The spring can be designed as a helical spring and with its outer circumference almost fill the inner cross section of the guide tube. Such a coiled spring can be well adapted to the inner cross section of the guide tube on the one hand, but on the other hand can accommodate a particularly round, flexible rod or cable serving as a tension element in its interior.

Since the tension element or the rod is deformed especially when the lock or door is opened and thus frictional forces or resistances can occur which could make the relative movement between the switching pin and the guide tube more difficult when it is closed, it is advantageous if the spring is a compression spring. It can thus assist in closing the relative movement of the switching pin and the pulling element in the interior of the guide tube located on the door or the lock case and make it easy to move. When opening, however, this compression spring is compressed accordingly by the relative movement, in which the passage on the door or the lock housing moves away from the anchoring point of the rod more and more.

The switching pin can have a tapered, in particular conical or rounded switching area at its free end, which, when the door is only ajar, with its smallest cross section has contact with a switching element or the like of the switch or the mechanical lock, and with its transition area to its largest cross section Switch and / or the mechanical lock actuated. If the door is only slightly open, neither the lock nor a switch is actuated, so that this position can be displayed or made noticeable.

The switch can control a display device for the door position and / or an alarm device. The respective position and above all the opening position can thus be made visible and, if necessary, audible. The connection to an alarm device can optionally be switched on separately, so that in this way an additional securing of the closed door is also established.

A particularly effective function of the device is obtained if the switching pin has two switching elements at the same time, namely the switch and the mechanical lock. In such a case, an indicator can be made visible via an electrical switch and the mechanical lock can be used to ensure that the bolt of the door or the lock cannot be accidentally closed past if the door or the lock are only ajar. If one of these devices fails, the other can still remain effective.

The relative movement between the switching pin and the door or the lock can be used in a variety of ways to actuate a mechanical lock. A particularly expedient solution can consist in the fact that the mechanical lock has a locking piece which can be displaced against the spring force transversely to a rod which can be moved with the bolt mechanism and which fits into a recess in this rod when the switching bolt moves back and the bolt mechanism is opened and the rod is shifted accordingly and when closing the door and pushing out of the recess releases the actuating rod and thus the drive linkage of the boltwork. Thus, the bolt can actually be actuated only when the door is closed and then released, so that this bolt actuation is still prevented when the door is only ajar.

For example, the locking piece can have a U-shaped cross-section, one U-leg of which is loaded with pressure by the switching bolt in the direction of the other U-leg and the other U-leg can extend in a recess on its between the two U-legs and by opening and closing the bolt slidable rod fit and be adjustable when the bolt is open and the switching pin withdraws from the locking piece. So if the door is opened by unlocking it and then swinging it open, the geometry gives way Ratios of the clamping bolts back from the locking piece so that it can be moved by the spring force into the recess which has now been brought to the same height by unlocking it and now prevents the bolt from being moved back into its locking position until this locking piece is removed from the said recess by closing the door or the lock completely.

Especially in the event that the door or the lock - for example in a safe or a safe room - has a very large thickness, it is expedient if the door-side end of the tension element is arranged on a rotating part and part of the tension element with the door closed the rotary part is wound and when the door is opened from the rotary part - due to the relative movement that then takes place - the rotatable part has or actuates a switching cam which releases the switch, the lock or the like when the door is pivoted through an acute angle in the opening direction . In this way, the greater thickness and thus the required greater length of the tension element can be taken into account, i.e. a longer relative pull-out of the tension element from the door can be effected without a correspondingly longer path for a relative movement in the direction transverse to the pivot axis in this or the lock case of having to consider the door.

In a preferred embodiment, the rotating part can be a rotating drum provided with at least one circumferential groove which is optionally arranged in a helical shape. Such rotating drums are known per se and allow automatic winding and space-saving accommodation. The automatic winding movement can - as is usual with rotary drums with a winding circumference per se - by a corresponding die Drum driving coil spring can be effected.

The switch cam can be arranged relative to the switch, the lock or the like actuating part in such a way that it rotates less than 360 degrees with respect to the switch when the lock or the door is fully opened. As a result, multiple loading during the opening or closing movement can be prevented.

A particularly expedient and simple solution for realizing a single application during possibly several revolutions of the drum can take place in that the rotatable drum or similar winding part has a pinion arranged coaxially to it and connected to it in a rotationally fixed manner, which - directly or indirectly - a Gearwheel with switching cam applied. With a corresponding reduction it can be achieved that this gear wheel itself makes only one revolution or, for safety reasons, the fraction of a revolution, despite several revolutions of the drum. The gearwheel could mesh directly with the pinion or a chain transmission could be provided - possibly also a belt drive instead of the pinion and gearwheel.

The electrical cable can be arranged in a flexible cable sheath. Despite the multiple wires or wires, this results in a uniform tension element.

For a problem-free winding movement on the one hand and nevertheless a secure power connection on the other hand, it is advantageous if the electrical cable - forming the pulling element - is continued from the circumference of the rotatable drum to its end face and is arranged in a spiral with as many interlocking turns as the rotating part in Rotates at revolutions, and when the end of the electric cable supplied to the power source comes out of the drum or its housing near the axis of rotation.

Both in this exemplary embodiment with a rotatable drum and, above all, and in the first place in the previously explained embodiment with an essentially rectilinear and only deflectable tension element, it is expedient if it has such a strength in the longitudinal direction of extension that it is also capable of transmitting pressure. or thrust is sufficiently pressure-resistant, that is to say can perform the desired relative movement in both pivoting directions of the closure.

Overall, there is a device with which, by means of a tension element or rod-shaped part with an actuating end or actuating drum, which may also only be retrofitted, because of the offset fastening relative to the door hinge when opening and closing, relative movements are generated at the free end and for actuating a switch and / or a lock can be used, this traction element can be arranged practically parallel inside the door or the lock or a lock housing well protected.

Fig. 1

eine teilweise im Horizontalschnitt dargestellte Draufsicht einer als Verschluß dienenden Türe mit einem Schloßkasten in Schließstellung, wobei ihr Riegel in eine Riegelöffnung eingreift,

Fig. 2

eine der Fig.1 entsprechende Darstellung, wobei die Türe um einen kleinen oder spitzen Winkel geöffnet, also "angelehnt" ist, wodurch ein im Inneren des Schloßkastens befindliches, seitlich des Türscharnieres im bandseitigen Bereich der Türe ortsfest befestigtes Zugelement relativ zur Türinnenseite und gegenüber einem in dem Schloßgehäuse installierten Schalter zurückgezogen und dadurch der Schalter in eine gegenüber Fig. 1 geänderte Schaltposition gebracht sind,

Fig. 3

eine den Figuren 1 u.2 entsprechende Darstellung mit um 180 Grad aufgeschwenkter Türe und somit durch die Relativbewegung zwischen Türe und Befestigungsstelle des Zugelementes gegenüber dem Schalter weitestmöglich zurückgezogenem Ende dieses Zugelementes bzw. an dessen Ende befindlichen Schaltbolzen,

Fig. 4

eine der Fig. 1 entsprechende Darstellung einer geschlossenen Türe, wobei das freie Ende des Zugelementes ein Sperrstück beaufschlagt und in Offenstellung hält,

Fig. 5

eine Seitenansicht der Anordnung des Sperrstückes und einer mit ihm zusammenwirkenden, eine Sperrausnehmung aufweisenden Stange, die ihrerseits über einen Winkelhebel durch ein Türschloß oder dergleichen verstellbar ist,

Fig. 6

eine der Fig. 5 entsprechende Darstellung, nachdem die Sperrstange mit ihrer Sperrausnehmung in den Bereich des Sperrstückes verstellt ist, was einer Öffnung des Hauptschlosses entspricht, wobei das Sperrstück aber noch außer Eingriff, das heißt die Türe noch geschlossen ist,

Fig. 7

eine der Fig. 4 entsprechende Darstellung mit dem Sperrstück und der relativ dazu verstellten Stange bei noch geschlossener Türe,

Fig. 8

eine der Fig. 7 entsprechende Darstellung nach dem Öffnen der Türe um einen solchen Betrag, daß das freie Ende und ein dort angeordneter Schaltbolzen des Zugelementes so weit zurückgewichen sind, daß das Sperrstück durch eine Feder in seine Sperrausnehmung an der Stange bewegt ist,

Fig. 9

eine der Fig.7 entsprechende Darstellung bei geöffneter Türe und demgemäß in Sperrposition befindlicher Sperre, die ein Verschieben des Riegels in dessen Schließstellung bei dieser Position der Türe verhindert,

Fig.10

eine der Fig.1 entsprechende Darstellung eines abgewandelten Ausführungsbeispieles, bei welchem aufgrund der Dicke oder Stärke des Verschlusses oder der Türe ein entsprechend langer Auszug des Zugelementes dadurch ermöglicht ist, daß das freie Ende des Zugelementes und der diesem benachbarte Bereich in Schließstellung auf eine in der Türe befindliche Drehtrommel aufgewickelt ist,

Fig.11

die Anordnung gem. Fig.10 bei geöffneter Türe und demgemäß von der Drehtrommel zumindest weitgehend abgewickeltem Zugelement,

Fig. 12

eine teilweise im Schnitt gehaltene vergrößerte Darstellung der Drehtrommel bei aufgewickeltem Zugelement,

Fig. 13

eine teilweise aufgebrochene Ansicht der Drehtrommel und des über ein Zahnrad mit ihr in Wirkverbindung befindlichen Mikroschalters sowie

Fig. 14

einen vergrößerten Querschnitt durch das als zweiadriges Elektrokabel mit Umhüllung, zum Beispiel mit Runddrahthülle, ausgebildete Zugelement.

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

Fig. 1

4 shows a top view, partially in horizontal section, of a door serving as a lock with a lock case in the closed position, its bolt engaging in a bolt opening,

Fig. 2

a representation corresponding to FIG. 1, the door being opened by a small or acute angle, that is to say "ajar", as a result of which a traction element located in the interior of the lock case and fixed to the side of the door hinge in the hinge-side region of the door relative to the inside of the door and opposite one the switch installed in the lock housing is withdrawn and the switch is thereby brought into a changed switching position compared to FIG. 1,

Fig. 3

2 shows a representation corresponding to FIGS. 1 and 2 with the door swung open by 180 degrees and thus, by the relative movement between the door and the fastening point of the pulling element with respect to the switch, the most retracted end of this pulling element or switching bolt located at the end thereof,

Fig. 4

1 corresponding representation of a closed door, wherein the free end of the tension element acts on a locking piece and holds in the open position,

Fig. 5

2 shows a side view of the arrangement of the locking piece and a rod which interacts with it and has a locking recess, which in turn can be adjusted via an angle lever by a door lock or the like,

Fig. 6

5 shows a representation corresponding to FIG. 5 after the locking bar is adjusted with its locking recess into the area of the locking piece, which corresponds to an opening of the main lock, but the locking piece is still out of engagement, that is to say the door is still closed,

Fig. 7

4 shows a representation corresponding to FIG. 4 with the locking piece and the rod adjusted relative thereto with the door still closed,

Fig. 8

7 corresponding representation after opening the door by such an amount that the free end and a switching pin arranged there have receded so far that the locking piece is moved by a spring into its locking recess on the rod,

Fig. 9

7 shows a representation corresponding to FIG. 7 with the door open and accordingly in the blocking position, which prevents the bolt from being moved into its closed position in this position of the door,

Fig. 10

a Fig.1 corresponding representation of a modified embodiment, in which due to the thickness or strength of the lock or the door a correspondingly long extension of the tension element is made possible in that the free end of the tension element and the area adjacent to it in the closed position to one in the Door rotating drum is wound up,

Fig. 11

the arrangement acc. 10 with the door open and, accordingly, at least largely unwound pulling element from the rotating drum,

Fig. 12

2 shows an enlarged representation of the rotary drum, partly in section, with the tension element wound,

Fig. 13

a partially broken view of the rotary drum and the microswitch in operative connection with it via a gearwheel and

Fig. 14

an enlarged cross section through the tension element designed as a two-wire electrical cable with sheath, for example with a round wire sheath.

A device for monitoring the in Figures 1, 4 u. 10 shown closed position of a swing door 1, flap or the like plate-shaped swivel or locking part, in the exemplary embodiment for monitoring the closed position of an armored cabinet door, has an actuating element which can be moved by the pivoting of the door 1 and a switching element acted upon by this actuating element for an electrical switch 2 (FIG. 1 to 3 and Fig. 10 to 13) or for a mechanical lock 3 (Fig. 4 to 9).

The actuating member is a tension element 4, which is deflectable or flexible transversely to its longitudinal extent and has the shape of a rod-shaped part in the exemplary embodiments according to FIGS. 1 to 9, for which reason it is also called "rod 4" in the following, which rod 4 with its end 5 at a distance from the pivot bearing 6, that is, at a distance from the axis of rotation of the hinge of the door 1 on a stationary part on the hinge side of the door, that is to say on the side of the door 1, where the hinge is located. In all of the exemplary embodiments, the stationary part is arranged on a wall 8 of the housing or room closed by the door 1. The tension element is also in the same way 4 according to the exemplary embodiment according to FIGS. 10 to 14 fixed on the hinge side of the door at a distance from its pivot axis, so that in the following description of the exemplary embodiments according to FIGS. 1 to 9, information given also applies to this exemplary embodiment according to FIGS. 10 to 14 and the deviations of this third exemplary embodiment that are present in comparison to this are described below.

When comparing FIGS. 1 to 3 or FIGS. 4, 7 and 9, it can be seen that the rod 4 can also be deflected in the same direction as the door 1 by pivoting the door 1, its free end 9 opposite the fastening end 5 being shown in FIG The closed position of the door 1 (see FIGS. 1 and 4) acts and actuates the switch 2 or the lock 3 in a manner to be described, and when the door 1 is pivoted it already by a small or acute angle into that shown in FIG. 2 or 9 Released position shown in the opening direction, that is, from the switch 2 or the lock 3 - relatively speaking - away. In reality, the switch 2 or the lock 3 move due to the different articulations of the door 1 on the one hand and the rod 4 on the other hand on different arches which bring together in the closed position of the door and in the opening direction of the door from each other remove.

The rod 4 is guided inside the door 1 or inside a lock housing 10 of the door 1, the door and its lock housing forming a unit in many armored cabinet doors. On the near-joint, i.e. adjacent to the pivot bearing 6, narrow side 11 of the door 1 or the lock housing 10, the rod 4 protrudes from the lock housing 10 and is fastened to the wall 8 of the housing or room closed by the door 1 or even to the door frame, welded in the exemplary embodiment. When comparing Figures 1 to 3 or the other figures, it can be seen that when the door is opened, the entry 12 for the rod 4 is moved about the central axis of the pivot bearing 6 on an arc which the rod 4 does not follow due to the fastening of its end can. It is only pivoted in the direction of the opening of the door, the entry 12 being displaced along a region of the rod 4. According to FIG. 3, a very considerable part of the bar length can finally protrude from the inlet 12 when the door 1 is swung open by 180 °.

The passage or entry 12 of the rod 4 is seen from the outside 13 of the door behind at least one fold 14 or even behind the door 1, so that at least in the closed position no manipulation of the star 4 and thus protected by the door 1 as a whole its actuating means are possible, from which an unauthorized person could benefit the next time the door is opened.

The entry 12 of the rod 4 from its anchoring point into the narrow side of the lock housing 10 is designed as a funnel-shaped opening 15 which narrows from the outside inwards, the narrowest point of which is equal in cross section or slightly larger than the cross section of the rod 4 is and which is located inside the door 1 or the lock housing 10. At the direct exit from the door or the lock housing 10, the rod 4 has play relative to this funnel-shaped opening 15, which facilitates the deformation of the rod according to FIGS. 2, 3 and 9. It is avoided by this funnel-shaped opening 15 and its expansion towards the fixed end 5 of the rod 4 that the rod 4 bent too much when opening the door 1 or even kinked and at the same time too heavily loaded by the opening edge.

At the free end 9 of the rod 4, a switching pin 16 is arranged as an actuator, which when the door 1 is in the closed position according to FIG. 2 and according to FIGS. 4 to 7, the switching element 17 of the electrical switch 2 or a likewise switchable locking piece 18 of the lock 3 for the bolt 19 or for a drive part, in the exemplary embodiment a rod 20 movable with the bolt mechanism in the sense of keeping the lock 3 open. Since the rod 4 is pressure-resistant, it can, when the door is closed, fix the switching elements mentioned, that is to say the switching element 17 of the switch 2 or the locking piece 18 of the lock 3, against a restoring force.

So that such compressive forces and also the pivoting movements can be transmitted precisely, the rod 4 with its switching pin 16 is mounted in a horizontal guide tube 21 in a horizontal guide tube 21 in a manner transverse to the pivot axis A of the pivot bearing 6 of the door 1, in the case of the pivot axis A arranged vertically in the exemplary embodiment and led. From this guide tube 21, the switching pin protrudes at its end facing away from the hinge or pivot bearing 6 when the door 1 is closed, as shown in FIGS. 1 and 4 to 7. Due to the opening movement of the door, the switching pin 16 is due to the relative movement already described on the one hand the switching pin 16 and on the other hand also the guide tube 21 on different swivel bends, relatively speaking, retractable into the guide tube 21 or vice versa, the guide tube 21 is pushed over the end of the switching pin when the door is opened, but at the same time the switch 2 or the lock 3 be removed from this switching pin 16.

The cross section of the switching pin 16 corresponds approximately to that of the guide tube, so that it carries out a precise relative movement.

In the exemplary embodiment, the rod 4 is constructed in the manner of a flexible shaft, so that it the deformations resulting when the door is opened, which lead to different bends between its fixed end 5 and the inlet 12, when this inlet 12 becomes more and more different removed the end 5, can perform. However, it would also be possible to assemble the rod 4 in a chain-like manner from tensile and pressure-resistant links which can be pivoted relative to one another, the pivot axes of the individual links then running approximately parallel to the pivot axis A of the pivot bearing of the door 1.

In the guide tube 21 is on the rod 1 between the radially projecting end 22 of the switching pin 16 relative to this rod 1 and a spaced abutment 23, in the exemplary embodiment the insertion funnel 24 containing the conical or funnel-shaped opening 15 for the rod 1, a relative movement of the switching pin 16 arranged opposite the guide tube 21 supporting spring 25 which is designed as a helical spring and with its outer circumference almost fills the inner cross section of the guide tube 21. It thus also serves as a spacer for the rod 4 opposite the inside of the tube 1 and facilitates the relative movements occurring between the guide tube 21 and the rod 4 when the door is pivoted. The spring 25 is a compression spring, so that it is most tensioned in the largest opening position shown in FIG. 3, even if due to the deformation of the against elastic restoring forces Rod 4 and thus its eventual tilting at the funnel-shaped opening 15 and the eventual tilting of the switching pin 16 with respect to the inside of the guide tube 21 are greatest.

The switching pin 16 has at its free end 26 a tapered switching area which is conical according to FIGS. 1 to 3 or rounded according to the other figures and which, with the door only ajar, with its smallest cross-section comes into contact with the switching element 17 of the switch 2 or with the locking piece 18 the lock has 3. With its transition area to its largest cross section, this conical end 26 can actuate the switch 2, while in the exemplary embodiment the mechanical lock is brought into the closed position by a tension spring 27 when the switching pin 16 withdraws from the locking piece 18, but conversely the locking piece 18 from the switching pin 16 is actively moved out of its locked position when the door 1 is completely closed (Fig. 5 to 7).

The switch 3 can, for example, control a display device for the door position or possibly - also additionally - an alarm transmitter. Thus, the leaned position of the door 1 shown in FIG. 2 can also be displayed, in which a bolt 19 could possibly be accidentally closed past its bolt opening 28, so that the door 1 would not be closed at all.

Although the arrangement of a switch 2 or a mechanical Lock 3 are shown in the drawings as two different embodiments, it would also be possible for the switching pin 16 to act on two switching elements, namely the switch 2 and the mechanical lock 3 at the same time. A correspondingly increased security can be achieved because the locking of the bolt 19 is prevented by the lock 3 as long as the door 1 is still in the open position or ajar position according to FIGS. 9 and 8.

For this purpose, the mechanical lock 3 has the locking piece 18 which can be displaced against the spring force by the switching bolt 16 transversely to the rod 20 which can be moved with the bolt mechanism and which, when the switching bolt 16 retracts and the bolt 19 is open as shown in FIGS. 8 and 9 and the rod 20 correspondingly displaced, into a recess 29 this rod 20 fits and is also indented by spring force. When the door 1 is closed and the switching pin 16 is pushed out of the guide tube 21, the locking piece 18 is also pushed out again from the recess 29 in the rod 20, so that the rod connected to the drive linkage of the bolt work or a lock 30 is returned to the one in FIG. 5 shown position can be moved.

FIGS. 6 and 7 show the position in which the lock 30 is open, but the bolt 19 is closed, the locking piece being arranged in the region of the recess 29 of the rod 20, but is out of engagement. The door 1 is thus closed, so that the aforementioned actuation of the lock 30 for closing the bolt 19 can take place unlocked. If the lock 30 is now brought into the closed position, the rod 20 is raised as shown in FIGS. 5 and 4 so that the locking piece 18 could no longer enter the recess 29.

In Fig. 8 and 9, however, it is shown that the lock 30 and the bolt 19 are open, so that from the position shown in Fig. 6 and 7 after pulling back the bolt 19, the door swung into the position shown in Fig. 9 can be, then the locking piece 18 gets into the recess 29, so that now the closing of the lock 30 - with little open and even more completely open door - is prevented. The lock 3 actuated by the rod 4 and the switching pin 16 thus serves to be able to operate the lock 30 only when the door 1 is completely closed, and thus allows the closed position of the door 1 to be checked in this way.

In the exemplary embodiment, the locking piece 18 has a U-shaped cross section, one U leg 31 of which is loaded with pressure by the switching pin 16 in the direction of the other U leg 32. This other U-leg 32 fits into the recess 29 on the extending and displaceable rod 20 between the two U-legs 31 and 32 and is adjustable in this locked position when the lock 30 and thus the bolt 19 are open and the switching pin 16 when swiveling the door backs away from the locking piece 18. This is shown in Figures 8 and 9.

When closing the door, the switching pin 16 or switching block is pushed at the end of the flexible rod 4 in the direction of the switch 2 or the locking piece 18 and can thus control and actuate the switch or the lock so that the complete closing of the door 1 is indicated or the door can only be locked when it is fully closed. The necessary parts, namely the rod 4 to be fixed to the wall 8, the guide tube 21 and a switch 2 or a lock 3 can also be retrofitted to such a door 1 or in its lock housing 10, so that these Securing possibility even with existing systems without their complete replacement, that is, with relatively low investment costs.

In the exemplary embodiment according to FIGS. 10 to 14, many of the above-described features and measures correspond in principle. However, this third exemplary embodiment differs from the two solutions described above in that the door-side end of the tension element 4 is arranged on a rotatable part and part of the tension element 4 is wound on this rotatable part when the door 1 is closed and can be unwound when the door 1 is opened , as the comparison of Figures 10 and 11 illustrates. In the exemplary embodiment, the rotatable part is a rotary drum 34 provided with at least one helically arranged circumferential groove 33, which in the manner to be described still has or actuates a switching cam 35 which, when the door 1 is pivoted through an acute angle in the opening direction, is also provided in this exemplary embodiment Switch 2 - but possibly also a lock 3 - releases. The switch cam 35 is arranged relative to the switch 2 - possibly to the lock 3 - in such a way that it rotates less than 360 degrees with respect to the switch 2 when the lock or door 1 is fully opened. This is because the rotary movement of the rotary drum 34 is used for the aforementioned movement of the switching cam 35 and thereby the actuation of the switch 2. In order to enable the longest possible tension element 4, which may be necessary in the case of very thick doors 2, in order to be able to accommodate them in a narrow space and to allow a sufficiently long relative movement when swiveling even by 180 degrees, there are several turns on the rotating drum 34 of the tension element 4 can be wound up, as shown in FIG. 10 u. 12 recognizes. However, this means that the rotating drum has a corresponding number of revolutions when opening performs the door in the position shown in Fig. 11. Therefore, the rotating drum 34 in the exemplary embodiment has a pinion 36 which is arranged coaxially with it and connected to it in a rotationally fixed manner and which acts on a gear 37 having the switching cam 35 to such an extent that it performs only one or less than one revolution when the rotating drum is rotated several times and thus avoids multiple loading of the switch 2 with the switching cam 35.

In Fig. 14 it is indicated schematically that the pulling element 4 in this exemplary embodiment, instead of a flexible and deflectable rod, is an electrical cable 39 having at least two wires 38, which wires 38 have a common insulating sheath 40, for example a round wire sheath. 10 to 12 indicate how the two wires 38 can protrude laterally from the rotary drum 34 near the central axis of rotation 41 in order to be connected to a circuit, not shown in detail. By interrupting such a circuit, a display or an alarm can be triggered, so that in this case the pulling element 4 has a double function. The sheath or round wire sheath 40 mentioned is a flexible cable sheath which allows the winding onto the rotating drum 34 and also the deflection and deformation when the door 1 is swung open without any problems.

FIGS. 12 and 13 show that the tension element 4, which is designed as an electric cable, is continued from the circumference of the rotary drum 34 to its end face facing away from its storage and is arranged in a spiral 42, which in turn can be groove-shaped, with so many interlocking turns is how the rotary drum 34 rotates during the rotation and unwinding of the tension element 4. The end of the electrical cable which can be supplied to the power source emerges from the drum 34 or its housing 43 near the axis of rotation 41, so that a firm connection is made is possible with a circuit or a power source and sliding contacts can be avoided despite the rotary movement.

The end 5 of the tension element 4 facing away from the rotary drum 34 has in this case a cable loop 44 so that the two wires 38 can merge into one another continuously. This loop can be seen in FIG. 12.

The embodiment according to FIGS. 10 to 14 advantageously allows a tension element 4 to be accommodated on the one hand in a space-saving manner despite the greater length, for example for a correspondingly thick door, in that a part of its length is closed, for example with a coil spring, when the door is closed Rotary drum in particular can be wound up automatically and, on the other hand, the pulling element 4 can also be designed as a sabotage protection, if necessary in the preceding exemplary embodiments, in that it is an electrical cable connected to a power source.

The device for monitoring or checking the closed position of a pivotable door 1, flap or the like, in particular an armored cabinet door or also another closure of a room or container to be secured, is provided with an actuating element which can be moved by pivoting the door 1 and a switching element acted upon by this actuating element . For an installation to be carried out subsequently on existing doors of this type, in which, for example, the pivot bearings 6 can be changed only with great difficulty or not at all, the actuating member is a tensile and pressure-resistant, deflectable or flexible rod 4 which can be deflected transversely to its longitudinal extension, and which can also be used one end 5 at a distance from the axis A of the pivot bearing 6 of the door 1 a fixed part is attached behind the door 1. The rod 4 extends transversely to the orientation of the pivot axis A of the door 1 and can in turn be deflected by pivoting the door 1 in approximately the same direction as the door 1, with its free end 9 opposite the fastening end 5 remaining behind the door 1, i.e. one performs relative shifting movement, which takes place in the opposite direction when the door is closed and can thus be used to carry out switching operations. The free end 9 of the rod 4 or a switching pin 16 arranged there can thus act upon a switch 2, a lock 3 or the like in the closed position of the door 1 and release it at an acute angle when the door 1 is opened, so that this opens even slightly Door can be displayed or a closing of the bolt is locked in this position of the door 1.

Claims (20)

1. A device for supervising the closed position of a pivoting shutter, swing door (1) or hinged cover of a secured room or receptacle, particularly of a safe door, including a pulling element (4) flexible through the swing of the shutter and further including a switching or operating element acted upon by said pulling element, the latter running transversely to the swivelling axis of the shutter, one end being attached spaced from the axis (A) of the swivel bearing (6) of the shutter to a stationary part on that side of the shutter where the hinge is located, and the pulling element (4) for its part being displaceable in the swivelling direction through the swing of the shutter, characterized in that one end of the pulling element (4) is attached to a stationary inside wall of the room or receptacle closed by the door (1) or the like, that the pulling element end (9) opposite said attachment end (5) is movable relative to the shutter, that the shutter is swung outwards and the flexible pulling element (4) is arranged on the inside and also within the shutter or door and/or within a lock housing, that in the closed position the end (9) in the direction of the door acts upon a switch (2), a lock (3) or the like and releases the same through movement relative to the shutter as the shutter is swung even through an acute angle in the opening direction, that the pulling element (4) is an electric cable (39) which is connected to an electric circuit and has at least two cores (38), interruption of the electric circuit being capable of initiating an indication and/or sounding an alarm.
2. A device as claimed in claim 1, characterized in that at that small face of the door (1) or the like or of the lock housing (10) which is near the hinge the pulling element (4) projects therefrom and is affixed e.g. welded to the wall (8) of the casing, room or receptacle closed by the door (1) or the like or to the doorframe or the like.
3. A device as claimed in claim 1 or claim 2, characterized in that viewed from the outside (13) of the door (1), the passage (12) of the pulling element (4) through the small face of said door is arranged behind at least one rabbet (14) or the passage (12) through the lock housing (10) is arranged behind the door rabbet (14), particularly behind the door (1).
4. A device as claimed in any one of claims 1 to 3, characterized in that the entrance (12) of the pulling element (4) from the place where the latter is anchored into the small face of the door or into the lock housing (10) takes the form of an opening (15), preferably a funnel-shaped one, narrowing from the outside to the inside, the cross section of the narrowest location of said opening being equal to or slightly larger than the cross section of the pulling element (4).
5. A device as claimed in any one of claims 1 to 4, characterized in that an indexing pin (16) is arranged as an actuating member at the free end (9) of the pulling element (4) and in the closed position of the shutter acts upon the switching element of an electrical switch (2) and/or upon a locking member of a lock (3) for the bolt (19) or for an operating part of the bolt to hold said lock (3) open.
6. A device as claimed in any one of claims 1 to 5, characterized in that the pulling element (4) together with the indexing pin (16) or the like thereof is mounted in a tubular guide (21) which is arranged transversely to the swivelling axis (A) of the door (1) and is horizontal in the case of a vertical swivelling axis (A), when the door (1) is closed the indexing pin projecting at the tubular guide end averted from the hinge and as the door is opened said indexing pin (16) being at least partly retractable into said end of the tubular guide.
7. A device as claimed in any one of claims 1 to 6, characterized in that the cross section of the indexing pin (16) approximates that of the tubular guide.
8. A device as claimed in any one of claims 1 to 7, characterized in that the pulling element (4) is designed to be in the nature of a flexible shaft or is composed of links which are resistant to compression and tensile stress and are capable of swivelling relative to one another.
9. A device as claimed in any one of claims 1 to 8, characterized in that arranged in the tubular guide (21) and on the pulling element (4) or flexible rod there is a spring (25) assisting a movement of the indexing pin (16) relative to the tubular guide (21), said spring being located between the indexing pin (16) end (22) projecting radially from the rod and an abutment (23) spaced therefrom, preferably the leading-in funnel (24) for the pulling element (4).
10. A device as claimed in any one of claims 1 to 9, characterized in that the spring takes the form of a coil or helical spring and with its outer circumference almost fills the inside cross section of the tubular guide (21), in particular is a compression spring.
11. A device as claimed in any one of claims 1 to 10, characterized in that the indexing pin (16) has at its free end a tapering, particularly a conical and rounded zone, the smallest cross section thereof being in contact with a switching or operating element (17) or the like of the switch (2) or of the mechanical lock (3) when the door is only left ajar, and the transition zone to the largest cross section thereof actuating the switch (2) and/or the mechanical lock.
12. A device as claimed in any one of claims 1 to 11, characterized in that the switch (3) controls an indicator for the door position and/or an alarm.
13. A device as claimed in any one of claims 1 to 12, characterized in that the mechanical lock (3) has a locking member (18) displaceable against spring tension by the indexing pin (16) and transversely to a rod (20) movable with the bolt mechanism, said locking member fitting in a recess (29) of the rod (20) when the indexing bolt (16) withdraws and the bolt (19) is open and said rod (20) is displaced accordingly, and said locking member releasing the actuating rod (20) and thereby the driving linkage of the bolt mechanism as the door (1) is closed and as said locking member is pushed out of the recess (29).
14. A device as claimed in any one of claims 1 to 13, characterized in that the locking member (18) has a U-shaped cross section, the one limb (31) of the U being pressurized by the indexing pin (16) in a direction towards the other limb (32) of the U, and that the other limb (32) fits in the recess (29) in the rod (20) which extends between both limbs (31, 32) and is displaceable through the actuation of the lock (30), and said other limb (32) is movable when the bolt (19) is open and the indexing bolt (16) withdraws from the locking member (18).
15. A device as claimed in any one of claims 1 to 14, characterized in that that end (9) of the pulling element (4) which is in the direction of the door is arranged on a rotatable element and a part of the pulling element (4) is wound onto the rotatable element when the door (1) is closed and is adapted to be wound off when the door (1) is opened, the rotatable element having or actuating a cam (35) which releases the switch (2), lock (3) or the like as the door (1) is swung about an acute angle in the opening direction.
16. A device as claimed in claim 15, characterized in that a rotary drum (34) provided with at least one circumferential groove (33) possibly of helical arrangement is provided as the rotatable element.
17. A device as claimed in either of claims 15 or 16, characterized in that the rotary drum (34) or the like has a pinion (36) which is arranged coaxially and fast for rotation with said rotary drum, a toothed wheel (37) presenting the cam (35) being acted upon by said pinion in such a way that the cam (35) rotates less than 360 degrees relative to the switch (2), lock (3) or the like when the shutter or door (1) is fully opened.
18. A device as claimed in any one of claims 1 to 17, characterized in that the electric cable (39) is arranged in a flexible cable sheathing.
19. A device as claimed in any one of the preceding claims, characterized in that the pulling element (4) is continued from the circumference of the rotary drum (34) to the face thereof and is arranged in a spiral (42) with turns one within the other of the same number as the rotations made by the rotary drum (34), and that the end of said electric cable fed to the power source departs from the drum (34) or housing (43) thereof near the axis (41) of rotation.
20. A device as claimed in any one of the preceding claims, characterized in that the pulling element (4) has in the direction of its longitudinal expanse a strength so as to be sufficiently pressure-proof, also for transferring compressive or pushing forces.

Images