EP1031918B1 - Closing device - Google Patents

Description

The invention relates to a locking device, in particular an electronically controlled locking device for Doors with block lock function.

An example of a conventional locking device is a mechanical mortise lock according to DIN 18 251 for doors. For doors to rooms secured with an alarm system block locks are often used, which are in the door frame are installed at eye level and a latch have, in the locked state in a recess of the door leaf engages. The engagement of the bolt in the recess is detected by a sensor and sent to the alarm system reported to focus. The key to actuation the block lock is in the hands of one Person authorized to arm the alarm system.

Locking the door on the block lock serves two purposes Functions: Firstly, it sets the alarm system in focus. To the others at the same time, it closes off the space from the Alarm system is secured. People who only have keys for the normal door lock (mortise lock) can no longer enter secured room, causing an accidental Triggering the alarm system is prevented. Usually the alarm system is only disarmed again when the block lock unlocked with his special key.

Conventional mechanical locking devices with Block locks have the disadvantage that the installation the block lock is complex. Because it requires Changes to the door frame and door leaf and the Laying lines to the alarm system. In addition, ordinary Block locks from the outside of the door, i.e. the unsecured one Side be accessible to keep the alarm system sharp to switch and defuse, making them susceptible to manipulation are.

Conventional mechanical locking devices are used increasingly also supplemented by electronic locking systems or replaced. These include electronic locking systems a permanently installed base station coupled with a lock as well as an electronic key. Between the Base station and the key find a data transmission instead, based on which the base station determines whether the Key authorized to operate the lock. Accordingly it releases the actuation of the lock. Especially Systems in which the Data transmission between base station and key over one certain distance can be done wirelessly. In this case the key provides a simple remote control transmitter or represents a transponder. Examples of such systems are in DE-A-41 11 582 and DE-C-41 34 922 specified.

The invention has for its object a locking device with block lock function to indicate that with relative can be used with little effort.

This problem is solved with the locking device according to claim 1.

The invention is based on instead of a separate one Locking mechanism of a block lock, the locking mechanism, which can be operated with individual key devices is also to be used for the block lock function. To this Purpose is a deactivation device that the typically electronic control unit that has the authorization of the individual key devices, deactivated. A separate block lock can therefore be omitted.

The subclaims relate to preferred embodiments the invention.

In the embodiments of claims 2 and 3 leaves the control unit is particularly easy in a door lock install as there is no wiring for the control unit can. This is especially true if the electronics of the control unit is battery operated. Compared to conventional ones electronic locking systems, in which a door lock electronics through a cable transition from the door frame to the Door leaf is controlled and supplied with energy also the advantage of increased security because of the cable transition as a point of attack for manipulations.

The features of claim 4 are when using the Locking device especially with an alarm system appropriate. Only then do you enable the alarm system to arm when the locking device is to be secured Has locked space and is deactivated, so that the room is also used using otherwise authorized access Key facilities can no longer be entered can. This prevents a false alarm and the alarm system only triggers on violent intrusion.

The embodiment according to claim 5 has the special Advantage on that the arming unit for arming the alarm system in the secured room itself before the use of force can be accommodated in a protected manner since it is wireless can be controlled a certain distance.

The features of claim 6 allow a simple Reactivate the control unit, where all before deactivation Key facilities authorized to access are again authorized to access are.

Fig. 1

eine Schließvorrichtung nach der Erfindung verbunden mit einer Alarmanlage,

Fig. 2

eine Variante des Ausführungsbeispiels der Fig. 1 und

Fig. 3

eine schematische Darstellung eines elektronischen Schließzylinders aus dem Ausführungsbeispiel der Fig. 1 oder Fig. 2.

A preferred embodiment of the invention is explained below with reference to the drawings. It shows

Fig. 1

a locking device according to the invention connected to an alarm system,

Fig. 2

a variant of the embodiment of FIGS. 1 and

Fig. 3

2 shows a schematic illustration of an electronic locking cylinder from the exemplary embodiment of FIG. 1 or FIG. 2.

Fig. 1 shows a door 1 with an inserted mortise lock (not shown), which is equipped with an electronic lock cylinder 2 . In the present exemplary embodiment, a mobile transponder 3 takes on the function of a key for the locking cylinder 2 . Identity codes of transponders are programmed into the locking cylinder 2 , which authorize access through the door 1 .

Upon actuation of a button 4 at the transponder 3, the lock cylinder 2 and the transponder exchange 3 wirelessly encrypted data, whereby the lock cylinder 2 receives the identity code of the transponder. 3 If the electronic locking cylinder detects that the special transponder 3 authorizes access to door 1 , it allows the mortise lock to be actuated briefly and thus door 1 to be opened .

The room locked by door 1 is additionally secured with an alarm system 5 . It can be armed via an arming unit 6 . This is connected to a deactivation device 7 for deactivating the locking cylinder 2 . A sensor in the form of a bolt contact 8 in the frame (not shown) of door 1 detects the engagement of a bolt of the (not visible) door lock in a recess in the door frame (not shown) and reports it to the deactivation device 7 .

To arm the alarm system 5 , an arming person actuates his transponder 9 in the vicinity of the arming unit 6 . There is then a wireless data exchange between the arming unit 6 and the transponder 9 , in which the arming unit 6 receives the identity code of the transponder 9 in encrypted form and checks whether it authorizes the alarm system 5 to be armed. Due to the wireless data exchange, the arming unit can be protected from the use of force behind a wall in the room secured by the door 1 and the alarm system 5 .

If the arming authorization is present, the arming unit 6 sends a deactivation request signal to the deactivation device 7 via a request line 10 . Based on the message from the bolt contact 8, this first checks whether the door 1 is locked. If so, it transmits a deactivation command to the locking cylinder 2 in wireless, encrypted form. The deactivation command sets the locking cylinder 2 in a deactivated state, in which it does not permit actuation of the door lock, even for a transponder 3 that was previously authorized to access. The locking cylinder 2 wirelessly acknowledges the deactivation to the deactivation unit 7 , which then sends a deactivation acknowledgment signal to the arming unit 6 via an acknowledgment line 11 . After receiving the deactivation acknowledgment signal, the arming unit 6 switches the alarm system 5 on .

When the alarm system 5 is disarmed, the person authorized to set the arm again actuates their transponder 9 in the transmission range of the arming unit 6 . If the transponder 9 is authorized to disarm the alarm system 5 , the arming unit 6 switches the alarm system 5 off . It then resets the deactivation request signal on request line 10 . The deactivation device 7 then transmits a re-activation command to the electronic locking cylinder 2 wirelessly and in encrypted form. This command reactivates the locking cylinder, as a result of which all the transponders 3 authorized to access before the deactivation are able to actuate the locking cylinder again.

If the secured space is accessible via several doors, all doors are equipped with corresponding locking cylinders 2 , bolt contacts 8 and deactivation devices 7 . All deactivation devices 7 can be connected simultaneously to the request line 10 and the acknowledgment line 11 in parallel. The acknowledgment line 11 is terminated with a pull-up resistor within the arming device 6 . As long as a locking cylinder 2 is still active, the associated deactivation device sends a low signal to the acknowledgment line 11 . After successfully deactivating the locking cylinder 2 , it takes away the low signal and becomes high-resistance to the acknowledgment line. The pull-up resistor pulls the acknowledgment line 11 to logic high only when all the locking cylinders 2 are deactivated and all the deactivation devices 7 have become high-resistance.

The present embodiment has the following advantages on:

Arming the alarm system 5 is only possible through the transponder 9 of a person authorized to arm. By programming the identity codes of armed transponders 9 into the arming device 6 , authorizations for arming can be granted and withdrawn in the manner of a locking plan.

The bolt contact 8 serves to demonstrate that the secured room is locked before the alarm system 5 is armed.

Arming is only possible if all doors 1 to the secured room are locked and the electronic locking cylinders 2 of these doors 1 have been successfully deactivated. Then, previously authorized persons can no longer unlock the doors.

As long as the alarm system 5 is armed, the locking cylinders 2 remain deactivated, ie unlocking the door 1 is not possible and the secure room cannot be entered accidentally.

After the alarm system 5 has been disarmed, the locking cylinders 2 of the locked doors 1 are automatically reactivated and the persons authorized to access can carry out locking operations again.

FIG. 2 shows a variant of the exemplary embodiment in FIG. 1, in which the request line 10 and the acknowledgment line 11 are replaced by a digital data network 12 . Accordingly, all functions of the deactivation device 7 are taken over by a node (hereinafter referred to as the closing node) 13 of the network. The arming unit 6 is replaced by a computer (PC) 14 , which is coupled to the alarm system 5 and is connected to the network 12 via a central node 15 . The computer 14 can be arranged, for example, in a monitoring center for the room to be secured. The arming and disarming of the alarm system 5 is then not effected by actuating the transponder 9 but, for example, by entering appropriate passwords on the computer 14 .

In the present exemplary embodiments, all wireless data exchange processes preferably take place via radio waves. In a variant of the exemplary embodiment in FIG. 1, the deactivation of the locking cylinder 2 by the deactivation device 7 can also take place instead of the deactivation command by sending out an interference radio signal which makes a radio connection between the transponder 3 and the locking cylinder 2 impossible.

Fig. 3 shows schematically the structure of the electronic lock cylinder 2 and its interaction with the bolt 16 of the door lock. The locking cylinder 2 contains an electronic control unit 20 , which is coupled to an antenna 21 for communication with the transponder 3 and the deactivation unit 7 . The locking cylinder 2 is provided on the end face with a rotary knob 22 which is coupled to a locking lug 24 via an electromagnetic clutch 23 .

The control unit 20 contains a memory 25 for identity codes of transponders which authorize the actuation of the lock, a receiver 26 for receiving the identity code of the transponder 3 , the key 4 of which has been actuated near the door 1 (see FIG. 1), and one Comparator 27 for comparing the received identity code with the stored codes. It also contains a receiver 28 for receiving the deactivation command and the activation command from the deactivation device 7 (see FIG. 1), a flip-flop 29 for storing the state (active or inactive) of the control unit 20 specified by these commands, and a gate circuit 30 , which forwards the output of the comparator 27 to the electromagnetic clutch 23 only when the flip-flop 29 indicates the active state of the control unit 20 .

When the transponder 3 is actuated in the vicinity of the locking cylinder 2 , the comparator 27 receives the identity code of the transponder 3 via the antenna 21 and the receiver 26 and compares it with the identity codes stored in the memory 25 . In accordance with one of the stored identity codes, it outputs an output signal which, when the control unit 20 is active, passes the gate circuit 30 and has the electromagnetic clutch 23 engaged for a limited time. Within this time, turning the rotary knob 22 takes the locking lug 24 with it and moves the bolt 16 , as a result of which the lock can be locked or unlocked.

A deactivation command from the deactivation unit 7 is received via the antenna 21 and the receiver 28 and sets the flip-flop 29 in the inactive state, whereupon the gate circuit 30 blocks the actuation of the electromagnetic clutch, so that the rotary knob 22 even when an authorized transponder is actuated 3 always turns empty and the lock cannot be operated. Only when an activation command is received from the deactivation unit 7 via the antenna 21 and the receiver 28 does the flip-flop 29 return to the active state and releases the gate circuit 30 .

The control unit 20 is battery operated. Devices for sending signals that acknowledge the deactivation unit 7 that the deactivation has taken place, as well as devices for encrypting and decrypting the wirelessly transmitted information, are not shown in FIG. 3 for reasons of clarity.

The described embodiment has the following advantages on:

Since the attachment of the bolt contact 8 only requires minimal intervention on the door frame, assembly is not very expensive. The deactivation unit 7 can be provided in the radio range to the locking cylinder 2, for example in a light switch flush-mounted box, without structural changes in the area of the door 1 being necessary.

Arming the alarm system 5 is only possible when the secured area is locked and can no longer be accidentally entered even by authorized persons.

The alarm system cannot be disarmed by manipulations on the door or door frame or on the lines 10 , 11 .

The arming unit 6 can be located within specially protected areas, for example behind a wall or within metal boxes, since it is operated wirelessly. Input units or readers in the unprotected area are therefore not necessary.

The operation of the arming unit 6 via a transponder 9 , similar to the operation of the locking cylinder 2 via a transponder 3 , makes it possible to integrate authorizations for arming and disarming the alarm system 5 into locking plans which are set up for the locking cylinder 2 and transponder 3 .

Claims (7)

1. A closing device comprising:

   a closing mechanism (16, 22, 23, 24) which can assume a closing position in which the closing device locks and a release position in which the closing device does not lock,

   a control unit (20) for determining an authorization of a key means (3) and for allowing a movement of the closing mechanism between the closing and release positions depending on the determined authorization,

   characterized by

   a deactivating means (7, 21, 28, 29, 30) for deactivating the control unit (20) so that, independent of said authorization, it does not allow a movement of the closing mechanism.
2. The closing device according to claim 1, wherein the key means (3) comprises a transponder and the control unit (20) is provided with a means (21) for a wireless communication with the transponder (9).
3. The closing device according to claim 1 or 2, wherein the control unit (20) comprises a means (21) for receiving a wireless deactivation instruction.
4. The closing device according to any one of claims 1 to 3, wherein the deactivating means (7) comprises a sensor (8) for positioning the closing mechanism (16, 22, 23, 24) as well as a connection to a sensitizing unit (6, 14, 15) of an alarm (5) for sensitizing the alarm if the sensor indicates that the closing mechanism is in the closing position and if the control unit (20) is deactivated.
5. The closing device according to claim 1 or 2, wherein the deactivating means is an interference transmitter which does not allow an exchange of access authorization information between the transponder (9) and the control unit (20) if the alarm (5) is sensitized and thereby prevents an inadvertent access of the protected region.
6. The closing device according to claim 4, wherein the sensitizing unit (6) comprises a means for a wireless communication with a transponder (9) having a sensitizing authorization in order to obtain a sensitizing instruction from the transponder and subsequently instruct the deactivating means to deactivate the control unit.
7. The closing device according to any one of claims 1 to 6, wherein the control unit (20) comprises a storage (25) for storing identity codes of key means (3) which authorize actuation of the closing device and a gate circuit (30) which locks the use of the stored identity codes in the deactivated state of the control unit (20) and releases the use in the activated state.

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