DE19532705C1 - Key-operated locking cupboard for secure storage of main keys of building - Google Patents

Abstract

The secure storage cupboard for keys has a first locking cylinder (14) for identifying the main key (15). It is operable by the main key and acts on a blocking device which when the main key is withdrawn blocks closing of the secure storage cupboard. To close the cupboard a closure device (7) is provided which can be inserted in it and locked with the key for the cupboard. The closure is locked by a second commercially available locking cylinder (9) which can be interchangeably inserted in the closure. The main key can only be withdrawn when the first locking cylinder is in a first rotary position and the first locking cylinder only releases the blocking device in a second rotary position.

Description

The invention relates to a key deposit for depositing a Master key (object or access key, etc.) in particular for office buildings or similar which can be locked with a deposit key is.

Key depots of this type are known and are often found there where a certain group of people have access to buildings or Plant facilities are also granted outside normal opening times that should. It can be police, fire department, maintenance and Act cleaning personnel, etc. A corresponding handover Master key (emergency key) would have the disadvantage that access would be possible in an uncontrolled manner through this group of people and that at if the key is lost, the locking system completely would have to be replaced, which entails considerable costs.

Instead, a master key is in a lockable key seldepot, which for the named group of people Handing over a deposit key is accessible. A loss of Deposit key generally requires just an exchange of depotylin what is much cheaper. Furthermore, by additional che electronic devices a control and if necessary access to the master key can be blocked.  

In the utility model DE-GM 81 04 109 a "safe for Storage of object keys ", which essentially is characterized in that when the object key is removed an alarm is always triggered. In the event of a fire or similar, emergency the police should be notified before the key is removed so that, despite the alarm being triggered, they were "authorized Removal "can go out.

US Pat. No. 4,967,576 relates to a security container with a chamber lockable by a door, which locked with a bolt is valid. The bolt is operated by an electromagnet. As long as there is an "access facility" in the chamber (calc cleaning agent) is not correctly put back into this or this is used, the electromagnet is actuated due to a switch contact and therefore not closing the door possible.

However, the closest prior art to the invention is in the EP 0 405 061.  

In EP 0 405 061 a "device for receiving emergency keys "described, with the emergency key in a bowl is kept by a remote-controlled electric or electronic locking device additionally against an out pull from the depot is secured. This allows access to the deposited keys can be locked at any time, even if the deposit could be opened in the normal way.

However, manipulation options are not completely out of the question either close. On the one hand, this locking device is at one Power failure either ineffective or no longer unlockable what can have devastating consequences, especially in an emergency. Ande on the other hand, it is also not possible to determine whether the emergency key is in the depot at all or possibly by another Key was exchanged.

The invention is therefore based on the object of a key depot to create the type mentioned in the simple and interference-free way an even higher security standard as well as an almost absolute security against manipulation.

This task is solved at the key depot mentioned at the beginning according to claim 1, characterized in that it is used to identify the main key a first lock that can be actuated with the master key cylinder (e.g. profile half cylinder), which on a lock direction that closes the key deposit at abgezo master key blocked.

This solution has the advantage that, on the one hand, the master key can be identified in a reliable manner by mechanical means. Since the key depot is generally closed with a flap, a lock insert or the like, it can further be seen from the outside by simple visual inspection that the correct key or key is not in the depot, since in this case locking is blocked , ie is not possible, and the deposit is consequently open,
The subclaims contain advantageous developments of the inventive concept:
Then z. B. to close the depot, preferably an insertable into the depot and lockable with the depot key is provided for the closure.

To lock the closure is preferably one in the Ver interchangeable insert, second commercially available lock cylinder (e.g. profile half cylinder) is provided.

This has the advantage that the deposit key is also small and remains handy, although not as in the above-mentioned stand technology, an expensive special cylinder for closing the depot is required.

The master key is preferably only removable if it is the first locking cylinder in a first rotary position (key trigger position), with the first locking cylinder only in a second rotational position releases the locking device, so that Depot can be closed.  

The locking device can be ver in the key depot Slidable slide formed, which is a closing of the key Depots blocked in a first sliding position and in a two releases the sliding position.

The slide is preferably by one in the key end pot axially guided insert in which the first lock cylinder which is built in.

In this case the slide is not in the second slide position, in which the key depot can be closed, movable, when the first locking cylinder is in the first rotational position (Key withdrawal position).

Furthermore, a spring is preferably provided which in the slide preloads and shifts the first sliding position when the ver finally opened.

The master key can be closed with the z. B. over a chain or the like. be connected, so that the lock at the same time as "key hanger "and the risk of accidental loss is essential Lich is reduced.

The key depot preferably has an essentially cylindrical cal housing, e.g. B. made of stainless steel with an aperture and can in a masonry or the like embedded and there taking into account the relevant VdS (Association of Property Insurers) guidelines gesi be saved.  

It may be necessary to carry out maintenance work on the Take the slide out of the depot. For this reason, one is Slider lock provided to remove the slider the depot is detachable when it is in the first sliding position located.

The slide lock can thereby by a ver in the axial direction running groove in the slide, a guide running in the groove rail, the guide rail extends axially outwards setting spring element and by flattening the slide, which is offset in relation to the groove in the circumferential direction his. The slide is in the first sliding position after on press the spring element in such a way that the stop and the flat face opposite each other and the slide on the Stop can be pulled out of the housing.

To prevent tampering, the spring element is also forward preferably only by means of a specially adapted, key-like Adapters or similar can be pressed in.

The first locking cylinder can be screwed to the slide and after the removal of the slide from the depot to be interchangeable, so that another master key z. B. when the relevant locking system can be deposited without this Key depot must be replaced completely.

The slide is preferably integrated in one in the housing Aluminum sleeve led. The aluminum sleeve can be used with the housing connected by screws and after removing the slider be removable from the depot.  

All operating states of the key depot can be controlled by a electronic condition monitoring monitors and if necessary also influenced, d. H. be blocked or released.

Condition monitoring can e.g. B. have the following assemblies:
a first device for detecting a closed or opened state of the key depot with the master key included, a second device for detecting an open state of the key depot with the master key removed, a third device with which an insertion of the adapter and / or a release of the slide lock signals is, a fourth device for electromagnetic locking of the lock of the key depot and for time-dependent detection and release or blocking the opening of the depot, and a fifth electronic device for detecting a removal of the sleeve or violent attempts to pull it out.

The first to fifth devices are preferably modular assembled and integrated in the aluminum sleeve (replaceable).

By replacing the aluminum sleeve, it is easy possible on site, e.g. B. upgrading the key depot with one or more of these electronic condition monitors to make.

The condition can finally be recorded using microswitches done that are inexpensive and very reliable.  

The slider can also be designed so that a key package with two to five cylinder keys to be deposited (main keys) is recordable, but then for reasons of space only one or no cylinder key will be identifiable.

Finally, a particular advantage of the invention is that that the key depot with minor changes also as part lock with two access keys can be used, whereby the deposit key, the first access key and the master key the second key is and unlocking the partner lock by opening the key deposit with the first access key and by actuating the first locking cylinder with the second access key. Doing so with the first Lock cylinder suitable locking elements of the partner lock unlocked.

Further details, features and advantages of the invention emerge from the following description of a preferred embodiment tion form of the invention with reference to the drawing. It shows:

Fig. 1 shows a schematic longitudinal section through an embodiment of a key according to the invention SSE depots;

Fig. 2 is an end view according to arrow E in Fig. 1;

Fig. 3 is a cross section along the line AA in Fig. 1;

FIG. 4 shows a cross section along the line BB in FIG. 1;

Fig. 5 is a cross section along the line CC in Fig. 1 and

Fig. 6 shows a cross section along the line DD in FIG. 1.

Fig. 1 shows the key depot in the closed state. It has a stainless steel housing 1 , which on the outer access side with
a housing panel 2 ends flush with masonry 3 . The housing 1 is provided on its back with a threaded bore 4 for receiving anchoring elements, fuses against pulling out, etc. Inside the housing is an aluminum sleeve 5 , which is detachably connected to the housing 1 by means of a screw 6 .

The housing 1 can be closed from the outside with a closure 7 . The closure 7 is used in the housing 1 so that its United shutter 8 ( Fig. 2) is flush with the housing panel 2 and is with a lock 9 , which, for. B. can be a profile half cylinder (second lock cylinder) (see FIG. 2) closed. In this case, a locking lug 10 bears against a stop 11 , so that the closure 7 cannot be pulled outwards. Fer ner is an electromagnetic locking device 12 is vorgese hen, performed with the current flow through a lock pin 13 in the path of movement of the catch 10th In this was shown in Fig. 3, the z, B. can be activated by a timer, the depot is not accessible even with a depot key.

Inside the sleeve 5 there is a first locking cylinder 14 , in which a master key 15 to be deposited is inserted, with which the first locking cylinder 14 can be actuated. The first Hohlzy cylinder 14 is arranged in a slide 16 designed as an insert, which is axially movably guided within the sleeve 5 and by means of a spring 17 from a second slide position shown in FIG. 1 in the direction of a first slide position (here to the left ), that is biased against the closure 7 or ge pressed, Furthermore, an axially extending locking rail 19 (see Fig. 6) for a cylinder lug 18 of the first lock cylinder 14 and for the slide 16 of the stop 11 are seen, the thus has a dual function.

If the master key 15 is to be removed from the depot, the lock 7 must first be unlocked with a depot key and removed from the depot. The master key 15 is then accessible. After removal of the closure 7 from the second (right) sliding position shown in FIG. 1, the slide 16 is moved by the spring 17 into the first (left) sliding position, and is now in contact with the stop 11 . The first locking cylinder 14 and thus also the master key 15 still take a second rotary position. In this position, the master key 15 is not removable. At the same time, the depot could be closed again, ie the locking device designed as a slide 16 is released.

To remove the master key 15, it must first be turned into the first rotational position (key withdrawal position). This is only possible when the slider 16 is in the first (left) sliding position, since previously a rotational movement of the first locking cylinder 14 and thus also the master key 15 is prevented by the locking rail 19 against which the cylinder nose 18 rests or next to it which the cylinder lug 18 is guided along during the displacement of the slide 16 until the slide 16 is in the first sliding position in which it lies against the stop 11 .

The master key 15 can then be turned to the first rotational position and then removed. This simultaneously pivots the cylinder lug 18 in front of the locking rail 19 , that is, in front of their (outer) end face 19 'opposite the depot opening and now prevents an axial return movement of the slide 16 into the second sliding position. The result of this is that the depot cannot be closed, since the slide 16 now takes up at least part of the depot opening, in which the closure 7 must be inserted to close the depot.

If the master key 15 is to be placed in the depot again, it must be inserted into the first locking cylinder 14 and rotated into the two-position position. Characterized cylinder pivots the lug 18 from the end face 19 'of the locking bar 19 off, so that the direction LockOn now released and the slider 16 is slidable in the second sliding position. By inserting the closure 7 , the slide 16 can now be moved against the force of the spring 17 into the second (right) sliding position. The lock 9 (second lock cylinder) of the lock 7 is then locked by turning the depot key (the locking lug 10 is pivoted towards the stop 11 , see FIG. 3) and the depot is closed.

At the beginning, the fourth device for condition monitoring, which has the electromagnetic locking device 12 , was mentioned, with which, for. B. with the help of a timer the depot can be temporarily blocked against any access.

If necessary, the key depot according to the invention can be supplemented with further electronic status monitors. For this purpose, at least two microswitches are preferably provided:
A first microswitch 21 turns on automatically when the depot is opened. ie actuated by removing the closure 7 when the slide 16 is moved by the spring 17 into the first sliding position. A second microswitch 22 is actuated by the cylin dernase 18 when the master key 15 is turned to the first rotational position in which it can be removed. The first and second microswitches 21 , 22 each form part of the above-mentioned first and second device for condition monitoring, with which detection and forwarding and signaling of the switch states to the outside, for. B. in a control room to egg ner alarm system or the like. They are preferably designed as modular electronic assemblies, which are arranged on the aluminum sleeve 5 in such a way that they can be easily replaced after the sleeve has been removed from the housing 1 . For electrical connection's to the outside, two plug / socket strips 25 are provided, the contacts of which can be released when the sleeve 5 is pulled out of the housing 1 and at the same time give an alarm signal.

For maintenance work and in the case in which the sleeve 5 is to be removed, the slide 16 must first be removed. To do this, a slide lock must be released using an adapter.

The slider catch is particularly apparent from Fig. 6 forth and is defined by a axially extending groove 31 in the slider 16, also extending in the axial direction and arranged on the inside of the sleeve guide rail 30, which runs in the groove 31, a guide rail 30 in Axial direction outward continuing spring element 33 (z. B. a narrow leaf spring or the like .. see also Fig. 1), and a flat 32 on the circumference of the slide 16 gebil det. The groove 31 is of course narrower than the stop 11 , since otherwise the axial forward movement of the slide would not be blocked to the outside in the first sliding position. At the area 32 is formed in the radial direction so that the stop - if the flattening 32 and stop 11 are opposite - is completely dig dig this. The flattening 32 extends in the axial direction over the entire length of the slide and is offset in the circumferential direction by about 90 ° with respect to the groove 31 .

The axial length of the guide rail 30 is dimensioned such that in the first (left) sliding position only the spring element 33 lies in the groove 31 . The slider 16 can thus be pivoted after pressing the spring element 33 by means of an inserted adapter by about 90 ° ge, and that according to FIG. 6 counterclockwise. This has the consequence that the flattening 32 is now opposite the stop 11 , so that the slide 16 is no longer blocked by it in the axially outward direction and can therefore be pulled out of the housing 1 .

An unnoticed removal is not possible due to the first microswitch 21 (see above). In addition, a third microswitch 23 (see FIG. 4) can be provided, which signals an introduction of the adapter or an indentation of the spring element 33 via the third device for condition monitoring.

After removing the slide, the screw 6 is accessible, after loosening the sleeve 5 can be removed.

The key depot according to the invention can additionally protect against attempts to break open its closure 7 with a core protection insert. Tapping protection pins or similar obstacles as well as a vandalism lock must be provided. The depot is also preferably installed in the wall with a tensile connection to the inside of the building. In addition, a fourth microswitch 24 (see FIG. 5) can be provided on the rear wall of the sleeve 5 and / or a strain gauge with which an alarm system is activated for the detection of pull-out and break-out attempts. This fourth micro switch 24 is part of the fifth device of the condition monitoring and can be triggered when the sleeve 5 removed as described above or by force as a result of Ausreißversu chen against the force of a plate spring assembly 20 slightly, ie by about 1 to 2.5 mm in the axial direction is moved outwards.

If necessary, modular heating and because Signaling devices can be installed or retrofitted.

In summary, it should be noted that it is easier because of mechanical arrangements are not possible, the deposited main remove key unnoticed or by another wrong one To replace keys, because the depot can only be closed, the correct master key is in it. This is Manipulation of the key depot according to the invention is almost impossible.

Reference list

1 housing
2 housing cover
3 masonry
4 threaded holes
5 sleeve
6 screw connection
7 closure
8 closure panel
9 lock (second lock cylinder) for lock 7
10 locking lug of the second locking cylinder 9
11 Stop for locking lug 10 and slide 16
12 locking device for second locking cylinder 9
13 locking pin of the locking device 12
14 first lock cylinder for master key 15
15 master keys
16 sliders
17 spring for slide 16
18 cylinder nose of the first locking cylinder 14
19 locking rail for cylinder nose 18
20 disc spring package
21 first microswitch
22 second microswitch
23 third microswitch
24 fourth microswitch
25 male / female connector
30 Slider locking guide rail
31 Slider groove
32 Flattening the slide
33 spring element of the slide lock

Claims (26)

1. Key depot for depositing a master key (object or access key), especially for office buildings or the like .. which can be locked with a depot key, characterized in that it identifies the master key ( 15 ) with a master cylinder that can be actuated with the master key ( 14 ), which acts on a locking device that blocks closing the key depot when the master key ( 15 ) is removed. 2. A key depot according to claim 1, characterized in that a closure ( 7 ) which can be inserted into the de pot and can be locked with the depot key is provided for closing the depot. 3. Key depot according to claim 2, characterized in that for locking the lock ( 7 ) an interchangeably insertable, second commercially available locking cylinder ( 9 ) is provided. 4. Key depot according to one of claims 1 to 3, characterized in that the master key ( 15 ) can only be removed when the first locking cylinder ( 14 ) is in a first rotational position (key withdrawal position), and in that the first locking cylinder ( 14 ) only releases the locking direction in a second rotary position. 5. Key depot according to one of claims 1 to 4, characterized in that the locking device is formed by a displaceable in the key depot slide ( 16 ) which blocks a closing of the key depot in a first sliding position and releases in a second sliding position. 6. Key depot according to claim 5, characterized in that the slide ( 16 ) is formed by an axially guided insert in the key depot, in which he lock cylinder ( 14 ) is installed. 7. Key depot according to claim 5 or 6, characterized in that the slide ( 16 ) is not displaceable into the second sliding position, in which the key depot can be closed, when the first locking cylinder ( 14 ) is in the first rotational position. 8. Key depot according to one of claims 5 to 7, characterized by a spring ( 17 ) for biasing and automatic displacement of the slide ( 16 ) in the first sliding position when the closure ( 7 ) is opened. 9. A key depot according to one of claims 2 to 8, characterized in that the master key ( 15 ) is connected to the lock ( 7 ) via a chain or the like. 10. Key depot according to one of claims 1 to 9, characterized in that it has a substantially cylindrical housing ( 1 ) with an aperture ( 2 ) which can be embedded in masonry ( 3 ) or the like and can be secured there. 11. Key depot according to claim 10, characterized in that the housing ( 1 ) is made of stainless steel. 12. Key depot according to one of claims 5 to 11, characterized by a slide lock which can be released from the depot for removing the slide ( 16 ) when the latter is in the first sliding position. 13. Key depot according to claim 12, characterized in that the slide locking means by an axially extending groove ( 31 ) in the slide ( 16 ), a groove in the groove ( 31 ) running guide rail ( 30 ), the guide rail continuing in the axial direction to the outside Spring element ( 33 ) and by a flat ( 32 ) offset in the circumferential direction with respect to the groove ( 31 ) on the slide ( 16 ), the slide ( 16 ) being pivotable in the first sliding position after the spring element ( 33 ) has been pressed in is that the stop ( 11 ) and the surface ( 32 ) face each other and the slide past the stop ( 11 ) can be pulled out of the housing ( 1 ). 14. Key depot according to claim 13, characterized in that the spring element ( 33 ) can only be pressed in by means of an adapted adapter. 15. Key depot according to one of claims 12 to 14, characterized in that the first locking cylinder ( 14 ) is screwed to the slide ( 16 ) and can be replaced after removing the slide ( 16 ) from the depot. 16. Key depot according to one of claims 5 to 15, characterized in that the slide ( 16 ) in an in the hous se ( 1 ) integrated aluminum sleeve ( 5 ) is guided. 17. Key depot according to claim 16, characterized in that the aluminum sleeve ( 5 ) is connected to the housing ( 1 ) by means of screws and can be removed from the depot after removal of the slide ( 16 ). 18. Key depot according to one of claims 1 to 17, characterized by electronic condition monitoring for Monitoring and / or influencing various operating states of the key deposit. 19. A key depot according to claim 18, characterized in that the condition monitoring has a first device for detecting a closed and / or open state of the key depot with the master key ( 15 ) included. 20. A key depot according to claim 18 or 19, characterized in that the condition monitoring has a second device for detecting an open state of the key depot when the master key ( 15 ) is removed. 21. Key depot according to one of claims 18 to 20, characterized in that the detection of the states by means of it ster or second microswitch ( 21 ; 22 ). 22. Key depot according to one of claims 1 to 21, characterized by a third device ( 12 ) with which a lead of the adapter and / or a release of the slide lock can be signaled by means of a third microswitch ( 23 ). 23. Key depot according to one of claims 18 to 22, characterized by a fourth device for electromagnetic locking of the lock ( 7 ) of the key depot and for time-dependent detection and release or blocking the opening of the depot. 24, key depot according to one of claims 1 to 23, characterized by a fifth electronic device for detecting violent attempts to break open by means of a strain gauge and / or a fourth microswitch ( 24 ). 25. Key depot according to one of claims 18 to 24, characterized in that the first to fifth devices are constructed in a modular manner and are interchangeably integrated in the aluminum sleeve ( 5 ). 26. Key depot according to one of claims 1 to 25, characterized in that the slider ( 16 ) is designed so that a key package with two to five cylinders to be deposited is key receivable, with only one or no cylinder key being identifiable.