EP0761913A1 - Key security store - Google Patents

Abstract

The partner lock is for accessing locking elements on doors, safes, security equipment or similar. The lock uses a first and a second access key together with a first (9) and a second (14) lock. The second lock is accessed after operation of the first lock with the first key. The second lock is operatable with the second key for admitting the locking and unlocking element. The second lock is accommodated in a housing (1) which is opened via the first lock.

Description

The invention relates to a key depot for depositing a master key (object or access key, etc.), in particular for office buildings or the like, which can be locked with a depot key.

Key depots of this type are known and are often used where a certain group of people is to be granted access to buildings or factory facilities outside of normal opening hours. These can be the police, fire service, maintenance and cleaning staff, etc. The handing over of corresponding master keys (emergency keys) would have the disadvantage that access by this group of people would be possible in an uncontrolled manner and that if such a key were lost, the locking system would have to be completely replaced, which entails considerable costs.

Instead, a master key is kept in a lockable key depot, which is accessible to the group of people named after handing over a deposit key. A loss of the deposit key generally requires only an exchange of the depot cylinder, which is much cheaper. Furthermore, control and, if necessary, blocking access to the master key is possible by means of additional electronic devices.

In the utility model DE-GM 81 04 109, a "safe for storing object keys" is disclosed, which is essentially characterized in that an alarm is always triggered when the object key is removed. In the event of a fire or the like If necessary, the police should take out the key be notified so that they can assume an "authorized removal" despite the alarm being triggered.

US Pat. No. 4,967,576 relates to a security container with a chamber which can be closed by a door and which is locked with a bolt. The bolt is operated by an electromagnet. As long as an "access device" (authorization means) present in the chamber is not correctly put back into it or inserted into it, actuation of the electromagnet due to a switch contact and thus closing the door is not possible.

However, the closest prior art to the invention is disclosed in EP 0 405 061. In this publication, a "device for receiving emergency keys" is described, in which the emergency key is stored in a shell, which is additionally secured against being pulled out of the depot by a remote-controlled electrical or electronic locking device. This means that access to the deposited key can be blocked at any time, even if the depot could be opened in the normal way.

Manipulation options cannot be completely ruled out here either. On the one hand, this locking device is either ineffective or no longer unlockable in the event of a power failure, which can have devastating consequences, in particular in the event of an emergency. On the other hand, it is also impossible to determine whether the emergency key is in the depot at all or whether it has been replaced by another key.

The invention is therefore based on the object of creating a key depot of the type mentioned at the outset, in which an even substantially higher security standard and almost absolute manipulation security are achieved in a simple and interference-free manner.

This object is achieved in the above-mentioned key depot according to claim 1 in that it has a first lock cylinder (e.g. profile half cylinder) which can be actuated with the master key and which acts on a locking device which blocks the key depot from being closed when the master key is removed in order to identify the master key.

This solution has the advantage that, on the one hand, the master key can be identified in a reliable manner by mechanical means. Since closing the key deposit generally with a flap, a lock insert or the like. is carried out, it can also be seen from a simple visual inspection from the outside that the correct key or key is not in the depot, since in this case locking is blocked, i.e. is not possible and the deposit is therefore open.

The subclaims contain advantageous developments of the inventive concept:

Then e.g. to close the depot, preferably a lock that can be inserted into the depot and locked with the depot key is provided.

To lock the lock, a second commercially available locking cylinder (e.g. profile half cylinder) that can be replaced in the lock is preferably provided.

This has the advantage that the deposit key also remains small and handy, an expensive special cylinder for closing the deposit not being required, as in the prior art mentioned above.

The master key can preferably only be removed when the first locking cylinder is in a first rotational position (key withdrawal position), the first locking cylinder only releases the locking device in a second rotational position so that the depot can be closed.

The locking device can be formed by a slide which is displaceable in the key depot and which blocks closing of the key depot in a first sliding position and releases it in a second sliding position.

The slide is preferably formed by an insert axially guided in the key depot, in which the first locking cylinder is installed.

In this case, the slide cannot be moved into the second sliding position, in which the key depot can be closed, when the first locking cylinder is in the first rotational position (key withdrawal position).

Furthermore, a spring is preferably provided which biases the slide into the first sliding position and moves it when the closure is opened.

The master key can be locked with e.g. over a chain or similar be connected so that the closure also serves as a "key ring" and the risk of accidental loss is significantly reduced.

The key depot preferably has a substantially cylindrical housing, e.g. made of stainless steel with a cover and can be built into masonry or the like. admitted and secured there taking into account the relevant VdS (Association of Property Insurers) guidelines.

To carry out maintenance work it may be necessary to remove the slide from the depot. For this reason, a slide lock is provided which can be released to remove the slide from the depot when it is in the first sliding position.

The slide lock can be formed by an axially extending groove in the slide, a guide rail running in the groove, a spring element continuing the guide rail in the axial direction, and by a flattening of the slide which is offset in the circumferential direction with respect to the groove. The slide can be pivoted in the first sliding position after the spring element has been pressed in in such a way that the stop and the flattening face each other and the slide can be pulled out of the housing past the stop.

In order to prevent tampering, the spring element is also preferably only by means of a specially adapted, key-like adapter or the like. impressible.

The first locking cylinder can be screwed to the slide and can be exchanged after the slide has been removed from the depot, so that another master key, e.g. can be deposited when the locking system in question is replaced without having to completely replace the key depot.

The slide is preferably guided in an aluminum sleeve integrated in the housing. The aluminum sleeve can be connected to the housing by means of screws and can be removed from the depot after the slide has been removed.

All operating states of the key depot can be monitored by electronic condition monitoring and, if necessary, also influenced, i.e. be blocked or released.

The condition monitoring can have, for example, the following assemblies: a first device for detecting a closed or opened state of the key deposit when the master key is present, a second device for detecting an opened state of the key deposit when the key is removed

Master key, a third device with which an insertion of the adapter and / or a release of the slide lock is signaled, a fourth device for electromagnetic locking of the lock of the key depot and for time-dependent detection and release or blocking of the opening of the depot, and a fifth electronic device to detect a removal of the sleeve or violent attempts to pull it out.

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

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

The conditions can finally be detected by means of microswitches, which are inexpensive and very reliable.

The slider can also be designed such that a key package with two to five cylinder keys (master keys) to be deposited can be received, although only one or no cylinder keys will then be identifiable for reasons of space.

Finally, a particular advantage of the invention is that the key depot can also be used with minor changes as a partner lock with two access keys, the depot key being the first access key and the master key being the second access key, and unlocking the partner lock by opening the depot with the first access key and by actuating the first locking cylinder with the second access key. Locking elements for a door to be locked (for example a safe door) are unlocked with the first locking cylinder so that this door is now opened can be. Locking takes place in a corresponding manner in reverse by actuating the first locking cylinder and then closing the depot.

• Figur 1: einen schematischen Längsschnitt durch eine erfindungsgemäße Ausführungsform eines Schlüsseldepots;
• Figur 2: eine Stirnansicht gemäß Pfeil E in Figur 1;
• Figur 3: einen Querschnitt entlang der Linie A-A in Figur 1;
• Figur 4: einen Querschnitt entlang der Linie B-B in Figur 1;
• Figur 5: einen Querschnitt entlang der Linie C-C in Figur 1 und
• Figur 6: einen Querschnitt entlang der Linie D-D in Figur 1.

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

• FIG. 1: a schematic longitudinal section through an embodiment of a key deposit according to the invention;
• Figure 2: an end view according to arrow E in Figure 1;
• 3 shows a cross section along the line AA in Figure 1;
• Figure 4 shows a cross section along the line BB in Figure 1;
• 5 shows a cross section along the line CC in Figure 1 and
• FIG. 6 shows a cross section along the line DD in FIG. 1.

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

The housing 1 can be closed from the outside with a closure 7. For this purpose, the closure 7 is inserted into the housing 1 in such a way that its closure panel 8 (FIG. 2) lies flush with the housing panel 2 and is closed with a lock 9, which can be, for example, a profile half cylinder (second locking cylinder) (see FIG. 2) . In this case, a locking lug 10 bears against a stop 11, so that the closure 7 cannot be pulled outwards. Furthermore, an electromagnetic locking device 12 is provided with which a current flow Lock pin 13 is guided in the path of movement of the locking lug 10. In the state shown in FIG. 3, which can be activated, for example, 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 locking cylinder 14 is interchangeably arranged in a slide 16 which is designed as an insert and which is guided so as to be axially movable within the sleeve 5 and by means of a spring 17 from a second sliding position shown in FIG. 1 in the direction of a first sliding position (here to the left), i.e. is biased or pressed against the closure 7. Furthermore, a locking rail 19 extending in the axial direction (see FIG. 6) is provided for a cylinder lug 18 of the first locking cylinder 14 and for the slide 16 the stop 11, which thus has a double 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 assume a second rotational position. In this position, the master key 15 cannot be removed. At the same time, the depot could be closed again, i.e. 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 the first locking cylinder 14 and thus also the master key 15 rotate the locking rail 19 is prevented, against which the cylinder nose 18 rests or next to which the cylinder nose 18 is guided during the displacement of the slide 16 until the slide 16 is in the first sliding position in which it rests on the stop 11.

The master key 15 can then be turned to the first rotational position and then removed. As a result, the cylinder lug 18 pivots in front of the barrier 19, i.e. in front of its (outer) end face 19 'opposite the depot opening and now prevents the slider 16 from moving axially back into the second sliding position. The consequence of this is that the depot cannot be closed, since the slide 16 now occupies at least part of the depot opening into 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 turned into the second rotary position. As a result, the cylinder lug 18 pivots away from the end face 19 'of the barrier 19 so that the locking device is now released and the slide 16 can be moved into 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 locking cylinder) of the lock 7 is then locked by turning the depot key (the locking lug 10 is pivoted behind the stop 11, see FIG. 3) and the depot is closed.

The fourth device for condition monitoring, which has the electromagnetic locking device 12, has already been mentioned at the beginning, with which the depot can be temporarily blocked against any access, for example with the aid of a timer.

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 is automatically activated when the depot is opened, i.e. 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 cylinder lug 18 when the master key 15 is turned into 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 condition monitoring devices, with which detection and forwarding and signaling of the switch states to the outside, e.g. in a control room, to an alarm system or similar he follows. 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 the electrical connection to the outside, two plug / socket strips 25 are provided, the contacts of which can come loose 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 slide lock is shown in particular in FIG. 6 and is a guide rail 30 in the axial direction due to an axially extending groove 31 in the slider 16, a likewise axially extending and arranged on the inside of the sleeve guide rail 30 which runs in the groove 31 spring element 33 continuing to the outside (for example a narrow leaf spring or the like, see also FIG. 1), and a flat surface 32 is formed on the circumference of the slide 16. The groove 31 is of course narrower than the stop 11, since otherwise in the first Sliding position the axial further movement of the shooter to the outside would not be blocked. The flattening 32 is designed in the radial direction so that the stop - when the flattening 32 and the stop 11 lie opposite one another - is completely absorbed by the latter. The flattening 32 extends in the axial direction over the entire length of the slide and is offset in the circumferential direction by approximately 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. After the spring element 33 has been pressed in, the slider 16 can thus be pivoted by approximately 90 ° by means of an inserted adapter, namely counterclockwise according to FIG. 6. 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 the introduction of the adapter or an indentation of the spring element 33 via the third condition monitoring device.

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

The key depot according to the invention can also be used to protect against tampering at its lock 7 with a core protection insert, anti-drilling pins or the like. Barring obstacles and a vandalism lock. 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) and / or a strain gauge with which an alarm system can be provided can be provided for the detection of pull-out and break-open attempts is activated. This fourth microswitch 24 is part of the fifth device for condition monitoring and can be triggered when the sleeve 5 is removed as described above or by force as a result of attempts to pull it out against the force of a plate spring assembly 20 slightly, ie by about 1 to 2.5 mm in the axial direction is moved outside.

If necessary, heating and other signaling devices can also be installed or retrofitted on a modular basis.

In summary, it should be noted that, due to simple mechanical precautions, it is not possible to remove the deposited master key unnoticed or to replace it with another wrong key, since the depot can only be closed if the correct master key is in it. This makes manipulation of the key depot according to the invention almost impossible.

Reference list

1

casing

2nd

Housing cover

3rd

Masonry

4th

Tapped hole

5

Sleeve

6

Screw connection

7

Closure

8th

Shutter

9

Lock (second lock cylinder) for lock 7

10th

Locking lug of the second locking cylinder 9

11

Stop for locking lug 10 and slide 16

12th

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 key

16

Slider

17th

Spring for slide 16

18th

Cylinder nose of the first locking cylinder 14

19th

Barrier for cylinder nose 18

20th

Disc spring package

21

first microswitch

22

second microswitch

23

third microswitch

24th

fourth microswitch

25th

Male / female connector

30th

Guide rail of the slide lock

3rd

1 groove of the slide

32

Flattening the slide

33

Spring element of the slide lock

Claims (28)

Key depot for depositing a master key (object or access key, etc.), especially for office buildings or the like, which can be locked with a depot key,
characterized in that for identification of the master key (15) it has a first lock cylinder (14) which can be actuated with the master key and which acts on a locking device which blocks the key depot from being closed when the master key (15) is removed. Key depot according to claim 1,
characterized in that a closure (7) which can be inserted into the depot and can be locked with the depot key is provided for closing the depot. Key depot according to claim 2,
characterized in that a second commercially available locking cylinder (9), which can be interchangeably inserted therein, is provided for locking the closure (7). Key depot according to at least 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 device in a second rotational position. Key depot according to at least one of claims 1 to 4,
characterized in that the locking device is formed by a slide (16) which is displaceable in the key depot and which blocks closing of the key depot in a first sliding position and releases it in a second sliding position. Key depot according to claim 5,
characterized in that the slide (16) is formed by an insert which is axially guided in the key depot and in which the first locking cylinder (14) is installed. Key depot according to claim 5 or 6,
characterized in that the slide (16) cannot be moved 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. Key depot according to at least one of claims 5 to 7,
characterized by a spring (17) for biasing and automatically moving the slide (16) into the first sliding position when the closure (7) is opened. Key depot according to at least one of claims 2 to 8,
characterized in that the master key (15) with the lock (7) via a chain or the like. connected is. Key depot according to at least one of claims 1 to 9,
characterized in that it has an essentially cylindrical housing (1) with an aperture (2) which is built into masonry (3) or the like. can be let in and secured there. Key depot according to claim 10,
characterized in that the housing (1) is made of stainless steel. Key depot according to at least one of claims 5 to 11,
characterized by a slide lock which can be released to remove the slide (16) from the depot when the latter is in the first sliding position. Key depot according to claim 12,
characterized in that the slide lock is provided by an axially extending groove (31) in the slider (16), a guide rail (30) running in the groove (31), a spring element (33) continuing the guide rail in the axial direction and by a In the circumferential direction with respect to the groove (31) offset surface (32) is formed on the slide (16), the slide (16) in the first sliding position after pressing in the spring element (33) in such a way that the stop (11th ) and the flattening (32) lie opposite each other and the slide past the stop (11) can be pulled out of the housing (1). Key depot according to claim 13,
characterized in that the spring element (33) can only be pressed in by means of an adapted adapter. Key depot according to at least 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. Key depot according to at least one of claims 5 to 15,
characterized in that the slide (16) is guided in an aluminum sleeve (5) integrated in the housing (1). 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 the slide (16) has been removed. Key depot according to at least one of claims 1 to 17,
characterized by an electronic status monitor for monitoring and / or influencing various operating states of the key depot. Key depot according to claim 18,
characterized in that the condition monitoring has a first device for detecting a closed and / or opened condition of the key depot when the master key (15) is included. 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 deposit when the master key (15) is removed. Key depot according to at least one of claims 18 to 20,
characterized in that the states are detected by means of first or second microswitches (21; 22). Key depot according to at least one of claims 1 to 21,
characterized by a third device (12), with which an insertion of the adapter and / or a release of the slide lock can be signaled by means of a third microswitch (23). Key depot according to at least one of claims 18 to 22,
characterized by a fourth device for the electromagnetic locking of the lock (7) of the key depot and for the time-dependent detection and release or blocking of the opening of the depot. Key depot according to at least 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). Key depot according to at least 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). Key depot according to at least one of claims 1 to 25,
characterized in that the slide (16) is designed such that a key packet with two to five cylinder keys to be deposited can be received, only one or no cylinder keys being identifiable. Use of the key depot according to at least one of the preceding claims as a partner lock,
characterized in that the depot key is a first access key and the master key is a second access key and the partner lock is unlocked / locked by opening / closing the depot with the first access key and by actuating the first locking cylinder (14) with the second access key, with the first locking cylinder locking elements for a door to be locked (safe door or the like) can be unlocked / locked. Partner lock according to claim 27,
characterized in that the first locking cylinder (14) is provided with devices for actuating the locking elements.

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