EP0445531A1 - Supervision device of the closed position of a pivoting shutter, especially of a safe door - Google Patents

Abstract

A device for monitoring or checking the closed position of a pivotable door (1), flap or the like, especially of an armoured safe door, or also of another closure of a room or container to be secured is equipped with an actuating member movable as a result of the pivoting of the door (1) and with a switch element loaded by this actuating member. For an installation which can also be carried out at a later date on already existing doors of this type, in which, for example, the pivot bearings (6) can be changed only with great difficulty, if at all, the actuating member is a tension- and pressure-resistant bar (4) which is deflectable or flexible transversely to its longitudinal extension and which is fastened at one end (5) to a fixed part behind the door (1) at a distance from the axis (A) of the pivot mounting (6) of the door (1). The bar (4) extends transversely relative to the orientation of the pivot axis (A) of the door (1) and, as a result of the pivoting of the door (1), is itself deflectable approximately in the same direction as the door (1), its free end (9) opposite the fastening end (5) lagging in relation to the door (1), that is to say executing a relative displacement movement which, during the closing of the door, takes place in the opposite direction and can therefore be utilised for carrying out switching operations. In the closed position of the door (1), therefore, the free end (9) of the bar (4) or a switch pin (16) located there can load a switch (2), a detent (3) or the like and can release it when the door (1) is opened even only at an acute angle, so that this slight opening of the door can be indicated or a closing of the bolt in this position of the door (1) blocked. <IMAGE>

Description

The invention relates to a device for monitoring the closed position of a pivotable closure, a pivoting door or flap of a secured space or container, in particular an armored cabinet door, with an actuating element which can be moved by the pivoting of the closure and a switching element acted upon by this actuating element.

So far, two possibilities have become known for monitoring the position of a door on a locking system:
One possibility provides an auxiliary latch which is pressed inwards when the door is inserted into the door frame and only enables the door to be locked in this pressed-in position. Thus, the closed position of the door is monitored mechanically in that the locking is otherwise not possible.

A second possibility that has become known consists in displaying the angular position, which is encapsulated in the hinge of the door, as described in WO 79/01028.

In both cases, manipulation or simulation of a certain functional position, for example with the help of glue or the like, and thus circumventing the monitoring, is not excluded, or in the case of the encapsulated arrangement of a lock on the door hinge, an influence on the associated lock cannot be ruled out and, above all, do not attach this known device, or not subsequently, with reasonable effort, for example to already installed armored cabinet doors.

It is therefore an object of the invention to provide a device of the type mentioned at the outset which, even when the door or lock is open, is not accessible to manipulation or interference and can also be subsequently installed on or in such locks or doors.

The solution to this problem consists essentially in the fact that the actuator is a deflectable or flexible pull element transverse to its longitudinal extension, that one end of this pull element at a distance from the axis of the pivot bearing of the door on a stationary part in the region of the pivot bearing or on the hinge side of the door is attached that the pulling element can be deflected by the pivoting of the door or the like in turn in the pivoting direction of the door (in the same way also of another lock), its end opposite the fastening end being movable relative to the door or the like, and that door-side end in the closed position of the door or the like acts on a switch, a lock or the like and already releases an acute angle in its opening direction when pivoting the door or the like.

Such an arrangement can be easily installed - even on an existing lock or door, that is to say later, and is largely secured against manipulation due to the simplicity of the construction, but can also be accommodated and fastened with sufficient protection. At the same time, the mechanism is very simple and therefore little or not susceptible to malfunction, since it can be exploited that two pivoting parts, which are arranged at a distance from one another and have pivoting parts, one of which is carried by the pivoting of the other, have different, distant paths at their ends or describe curves so that these path differences when pivoting the closure can be used to actuate a switch, a lock or another signal or actuator.

It is particularly expedient if the pulling element is guided inside the door or the like and / or a lock housing and protrudes therefrom on the narrow side of the door or the like or the lock housing near the hinge or hinge and is closed on the wall of the door or the like Housing, space or container or attached to the door frame or the like, for example welded.

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 offset from it at a distance from it, so that its free end is more and more compared to its original position relative to the door want to stay towards their hinge. If the door is pivoted in the closed position, however, this end or the end region is pushed away from the hinge relative to the inside of the door or retracted into an initial position and the switching element can thereby a switch or a mechanical lock.

It should be added at this point that the tension element in a manner to be described in several exemplary embodiments expediently be a tensile and compressive, transverse to its longitudinal extent - for example in any cross-sectional area - deflectable or flexible rod-shaped part, i.e. 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 pulling 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 also unreachable, at least 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 that 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. In this way, the fact can be taken into account that when the door is opened and thus pivoted, the rod not only has to perform a relative sliding movement in relation to the passage in the passage area, 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 tension element, a switching bolt or actuator can be arranged, indirectly or directly, 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 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, at 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. Thus, when opening and closing, there is also a defined deflection and relative movement of the switching pin with respect to the closure and the 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 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 which, when the door is fully open, penetrates the passage into the door or the lock housing. A flexible shaft is a very inexpensive component, which nevertheless has a high level of stability and, with good flexibility, also good pressure resistance.

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 opened, 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 anchorage point of the rod.

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 transmitter. 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 fuse is also made for the closed door.

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 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 of 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 bolt work. Thus, the bolt can actually only be actuated 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 this can be moved by the spring force into the recess which has meanwhile 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 pulling element is arranged on a rotating part and part of the pulling element with the door closed the rotating part is wound and when the door is opened from the rotating part - due to the relative movement that then takes place - the rotating 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 pulling element can be taken into account, i.e. a longer relative pulling out of the pulling 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, a rotating drum provided with at least one circumferential groove which is optionally arranged in a helical manner can be provided as the rotatable part. Rotary drums of this type are known per se and allow automatic winding and space-saving accommodation. The automatic winding movement can - as is common 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 - indirectly or directly - a Gearwheel with switching cam acted upon. By means of a corresponding reduction it can be achieved that this gearwheel itself only makes one revolution or, for safety reasons, the fraction of a revolution despite several revolutions of the drum. The gear could mesh directly with the pinion or a chain transmission could be provided - possibly also a belt drive instead of the pinion and gear.

The tension element can be an electrical cable having at least two wires and can be connected to a circuit by interrupting which a display and / or alarm can be triggered. In this way, the device can also be used as a sabotage protection because an alarm is triggered when the cable is cut. The two-wire electrical cable can be arranged in a flexible cable sheath in order to produce a uniform tension element despite the multiple wires or wires.

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 tensile element, it is expedient if it has such a strength in the longitudinal direction of extension that it can also transmit 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 relative movements at the free end are generated in a simple manner by means of a tension element or rod-shaped part with actuating end or actuating drum, which may also be retrofitted, due to the offset fastening relative to the door hinge when opening and closing, and for actuating a switch and / or a lock can be used, this tension 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 Offenstel-lung 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

2 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 area 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 is adjustable 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 in 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 locked 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 consequently 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 up,

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-core 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 fixed 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 from this third exemplary embodiment that are present in comparison with this are described below.

When comparing Figures 1 to 3 or Figures 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 Releases shown position in the opening direction, that is, away from the switch 2 or the lock 3 - seen relatively. 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. At the joint near, ie 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 attached to the wall 8 of the housing or room closed by the door 1 or even to the door frame , welded in the 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 a circular 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 rod 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 in cross section is equal to or slightly larger than the cross section of the rod 4 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 is too bent or even bent when opening the door 1 and at the same time is 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, when the door is closed, it can 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 on all sides enclosed in a horizontal guide tube 21 in a transverse direction 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 according to 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 which result 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 and pivotable links, 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 on the rod 1 between the end 22 of the switching pin 16 projecting radially with respect to this rod 1 and a spacer 23 spaced therefrom, in the exemplary embodiment the insertion funnel 24 containing the conical or funnel-shaped opening 15 for the rod 1 is 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 almost completely fills the inner cross section of the guide tube 21 with its outer circumference. It thus also serves as a spacer for the rod 4 opposite the inside of the tube 1 and facilitates the relative movements occurring when the door is pivoted between the guide tube 21 and the rod 4. 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 elastic restoring forces Rod 4 and thus its possible tilting at the funnel-shaped opening 15 and the possible 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 counter to the spring force by the switching pin 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 of 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 position shown 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. 5 and 4, the rod 20 is raised 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 Figs. 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 between the two U-legs 31 and 32 and displaceable rod 20 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 the door is closed, 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 actuate 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 option even with existing systems without their complete replacement, that is, can be realized with relatively low investment costs.

In the exemplary embodiment according to FIGS. 10 to 14, numerous 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 switch 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 confined 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, when the rotating drum is rotated several times, it performs only one or less than one revolution and thus avoids multiple loading of the switch 2 with the switching cam 35.

In Fig. 14 it is indicated schematically that the tension element 4 in this exemplary embodiment is, instead of a flexible and deflectable rod, an electric 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.

In Figures 12 and 13 it is clear that the tension element 4, which is designed as an electrical 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 established 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 pulling element 4 to be accommodated on the one hand in a space-saving manner despite a greater length, for example for a correspondingly thick door, in that 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 appropriate 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 another closure of a room or container to be secured, is provided with an actuating member which can be moved by the pivoting of the door 1 and a switching element acted upon by this actuating member . 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 displacement movement, which takes place when the door is closed in the opposite direction 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 on 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 in this position of the door 1 is blocked.

Claims (20)

Device for monitoring the closed position of a pivotable closure of a pivoting door (1) or flap of a secured space or container, in particular an armored cabinet door, with an actuating element which can be moved by the pivoting of the closure and a switching element acted upon by this actuating element, characterized in that the actuating element is a transverse For its longitudinal extension deflectable or flexible tension element (4) is that one end of this tension element (4) at a distance from the axis (A) of the pivot bearing (6) of the door (1) on a stationary part in the region of the pivot bearing (6) or is fastened on the hinge side of the door (1) in such a way that the pulling element (4) can in turn be deflected in the pivoting direction of the door (1) by pivoting the door (1) or the like, its end on the door side opposite the fastening end (5) ( 9) is movable relative to the door (1) or the like, and that the door-side end (9) in the closed position of the door (1) or the like, a switch (2), a lock (3) or the like is acted upon and when the door (1) is pivoted it is already released by an acute angle in the opening direction. Apparatus according to claim 1, characterized in that the pulling element (4) is guided inside the door (1) or the like and / or a lock housing (10) and on the narrow side of the door (1) or the like or the near the hinge or hinge Lock housing (10) protrudes from it and on the wall (8) of the door (1) or the like closed housing, space or container or attached to the door frame or the like, for example welded. Apparatus according to claim 1 or 2, characterized in that the passage (12) of the tension element (4) through at least one fold (14) as seen through the narrow side of the door (1) from the outside (13) or the passage (12) through the lock housing (10) behind the door rebate (14), in particular behind the door (1). Device according to one of claims 1 to 3, characterized in that the entry (12) of the tension element (4) from its anchoring point into the narrow side of the door or into the lock housing (10) as a preferably funnel-shaped opening which narrows from the outside in ( 15) is formed, the narrowest point in cross section is equal to or slightly larger than the cross section of the tension element (4). Device according to one of claims 1 to 4, characterized in that a switching pin (16) is arranged as an actuating member at the free end (9) of the pulling element (4), with which the switching element of an electrical switch (2) and / or a locking piece of a lock (3) for the bolt (19) or for a drive part of the bolt in the sense of keeping this lock (3) open. Device according to one of claims 1 to 5, characterized in that the tension element (4) with its switching bolt (16) or the like is arranged in a horizontal direction in the case of a vertical pivot axis (A) of the door (1) in the case of a vertical pivot axis (A) , Guide tube (21) mounted at the end facing away from the hinge the switching pin protrudes when the door (1) is closed and into which this switching pin (16) can be at least partially retracted when the door is opened. Device according to one of claims 1 to 6, characterized in that the cross section of the switching pin (16) corresponds approximately to that of the guide tube. Device according to one of claims 1 to 7, characterized in that the tension element (4) is constructed in the manner of a flexible shaft or is composed of tensile and pressure-resistant members which can be pivoted relative to one another. Device according to one of claims 1 to 8, characterized in that in the guide tube (21) on the tension element (4) or flexible rod between the radially projecting end (22) of the switching pin (16) and an abutment spaced therefrom ( 23), preferably the insertion funnel (24) for the tension element (4), a relative movement of the switching pin (16) relative to the guide tube (21) supporting spring (25) is arranged. Device according to one of claims 1 to 9, characterized in that the spring is designed as a helical spring and with its outer circumference almost fills the inner cross section of the guide tube (21), in particular is a compression spring. Device according to one of claims 1 to 10, characterized in that the switching pin (16) has at its free end a tapered, in particular conical and rounded switching area, which is only ajar Door with its smallest cross-section has contact with a switching element (17) or the like of the switch (2) or the mechanical lock (3), and actuates the switch (2) and / or the mechanical lock with its transition region to its largest cross-section. Device according to one of claims 1 to 11, characterized in that the switch (3) controls a display device for the door position and / or an alarm transmitter. Device according to one of claims 1 to 12, characterized in that the mechanical lock (3) has a locking piece (18) which can be displaced counter to spring force by the switching bolt (16) transversely to a rod (20) which can be moved with the locking mechanism and which has the switching bolt retracting (16) and open bolt (19) and correspondingly displaced rod (20) fits into a recess (29) of this rod (20) and when closing the door (1) and sliding out of the recess (29) the actuating rod (20) and so that the drive linkage of the boltwork releases. Device according to one of claims 1 to 13, characterized in that the locking piece (18) has a U-shaped cross section, the one U-leg 31 with the switching pin (16) towards the other U-leg (32) Pressure is applied, and that the other U-leg (32) in the recess (29) the rod (20) extending between the two U-legs (31, 32) and displaceable by the actuation of the lock (30) fits and is adjustable when the bolt (19) is opened and the switching bolt (16) is removed from the locking piece (18 ) withdraws. Device according to one of claims 1 to 14, characterized in that the door-side end (9) of the pulling element (4) is arranged on a rotatable part and part of the pulling element (4) is wound on the rotatable part when the door (1) is closed and at Opening of the door (1) can be unwound therefrom, the rotatable part having or actuating a switching cam (35) which, when the door (1) is pivoted by an acute angle in the opening direction, the switch (2), the lock (3) or the like releases. Apparatus according to claim 15, characterized in that a rotary drum (34) provided with at least one circumferential groove (33) optionally arranged in a helical manner is provided as the rotatable part. Device according to one of claims 15 or 16, characterized in that the rotary drum (34) or the like has a pinion (36) which is arranged coaxially with it and connected to it in a rotationally fixed manner and which thus acts on a gearwheel (37) having the switching cam (35) that the switch cam (35) rotates less than 360 degrees relative to the switch (2), the lock (3) or the like with respect to the switch (2) when the lock or door (1) is fully opened. Device according to one of claims 1 to 17, characterized in that the pulling element (4) is an electrical cable (39) having at least two wires (38), in particular in a flexible cable sheath, and is connected to a circuit, by the interruption of which a display and / or alarm can be triggered. Device according to one of the preceding claims, characterized in that the pulling element (4) is continued from the circumference of the rotating drum (34) to its end face and is arranged in a spiral (42) with as many interlocking turns as the rotating drum (34) when rotating at revolutions, and that the end of this electric cable supplied to the power source exits the drum (34) or its housing (43) near the axis of rotation (41). Device according to one of the preceding claims, characterized in that the tension element (4) has such a strength in the longitudinal direction of extension that it is sufficiently pressure-resistant to transmit pressure or shear forces.

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