EP1340869A2 - Window or door lock - Google Patents

Abstract

The device has a locking bar movable from an unlocking position to a locking position to secure the window (11,21) or door against unauthorized opening, an attack detector for detecting a break-in attempt and a status signal transmitter for transmitting an attack detection signal to a break-in message system.

Description

The invention relates to a lock for a window or a door. Such a thing Lock is used to secure the window or door against one violent opening or other unauthorized opening. Therefor a locking bolt can be brought into a locking position, in which he in an assigned striker or a lock box on the Window or door engages. Such a castle can do one Successfully warding off burglary. Nevertheless, such a Attempted break-in with considerable damage to the window or door ends whose repair requires an undesirable effort.

It is an object of the invention to develop such a lock in such a way that that an attempted break-in is not only fended off, but also leaves as little damage to the window or door as possible.

This task is solved by a window / door lock, which additionally to a locking bolt that secures the window or door from an unlocking position can be converted into a locking position, has at least one attack detector and a state signal transmitter, the attack detector attempting to break into the window or can detect the door in a non-destructive manner, and wherein the state signal transmitter when a break-in attempt is detected Attack detection signal can transmit to an intrusion detection system.

The lock according to the invention therefore not only fulfills a security function, but also an alarm function. Therefor can it via the state signal transmitter to a - known per se - central Intrusion alarm system can be coupled with other decentralized Alarm devices is connected. The intruder alarm system can a local one in response to an attack detection signal from the lock emit an acoustic or visual alarm signal and a message from the For example, forward the attempted break-in to a security service.

The coupling of security function and alarm function at the The lock according to the invention therefore has the advantage that the lock has one Detect intrusion attempts at an early stage and send them to the intrusion detection system can report further. This allows the intrusion detection system a local alarm signal immediately after the attempt to break in, for example generate a siren sound. If that caused it Deterrent the burglar from releasing the attempted break-in are caused, those caused on the window or the door Damage kept to a minimum.

Another advantage of the invention is the low installation effort: By the attack detector and the state signals of the components of the lock is for their attachment to the window or the Door no additional or at least no significant assembly effort required if there is a lock on the window or door anyway is assembled.

For the attack detector of the lock according to the invention, it is from Meaning that it is able to detect an attempted break-in, without destroying the attack detector for this purpose must be done. In particular, it is not necessary for a predetermined breaking point a detector element breaks as a result of the attempted break-in, so that detection is possible at all. Instead, the invention a detection of an attempted break-in is provided before the Lock or on the window or door special destruction occurred are, and in particular regardless of where attempt to break into the window or door. Such Detection mode has the advantage that the lock and the attack detector immediately after the defense and the reporting of an attempted break-in are operational again without, for example, a detector element must be replaced with a destroyed predetermined breaking point.

Compared to an attack detector, for example with an alarm signal generator an integrated siren - the invention offers the advantage that the attack detection signal to a central intrusion detection system is transmitted, the output of a local alarm tone induce and for this purpose at a not easily accessible place within the building in question can. For example, several of the intrusion detection systems controlled alarm sirens installed at different locations in the building be to quickly destroy the alarm sirens by the Prevent or aggravate burglars. In contrast, there is one Attack detector with integrated siren the danger that this - immediately after their sound - from the burglar through violent mechanical Action is destroyed, making the alarm sound undesirable early silent.

The principle of detection of the lock according to the invention is preferably based on the detection of mechanical vibrations of the window or the door that is triggered due to an attempted break-in. This Detection principle is particularly suitable for a non-destructive Detection because such vibrations in the event of a break-in attempt triggered and transmitted by structure-borne noise, even before any Damage to the window or door has been caused. In addition, such vibrations can be detected with a high degree of certainty be analyzed for their cause, in particular in that whether they result from an attempted break-in. Typically they are vibrations caused by an attempted break-in low frequency, and they repeat at tight time intervals. In contrast, is, for example, the impact of a ball or a bird a window typically a one-time event, and one Event has a clearly distinguishable frequency characteristic. This means that false alarm messages can be generated based on this detection principle can be avoided particularly reliably.

In particular, it is possible to, for example, the output signals of the attack detector by means of an evaluation and control device - according to your Frequency characteristic, its amplitude characteristic, the time behavior the pulse packets (for example a repetition rate of a certain one Frequency characteristic within a given time window), or to evaluate a combination of these criteria.

The lock according to the invention is preferably an additional window / door lock trained, i.e. as a lock, in addition to a existing lock an additional security of the window or the Door allows, for example due to an additional locking bolt. Such an additional lock enables simple retrofitting a window or a door for simultaneous fulfillment both an additional security function as well as an alarm function, as already explained.

On the other hand, by using an additional lock and this additional security of the window or door caused the detection security increased even further with that coming from the attack detector recorded frequency or amplitude image a break-in attempt reveals. A window or window secured in this way The door can only be forced through special attack measures be opened, the vibrations on the window or door with a particularly characteristic frequency and amplitude image as well as a particularly characteristic time behavior of the received signal sequences cause.

A non-destructive detection of an intrusion attempt is particularly important thereby possible that slight occurrences at the window or the door Changes in length are recorded when attempting to break in inevitably caused. For this purpose, the attack detector be integrated in the window / door lock.

The attack detector preferably has a strain gauge in Form of a piezoelectric film on the surface with the window or Door lock or a housing thereof is connected. By measurement the electrical voltage occurring at this piezoelectric sensor changes in length can be detected by structure-borne noise transferred to the lock mounted on the window or door. Such a piezoelectric sensor has the advantage that the Monitoring of voltage changes only a small electrical Performance requires and the energy consumption of the attack detector is therefore low, which enables off-grid operation.

Alternatively, the attack detector can be a magnetoresistive sensor have, which is used in connection with a permanent magnet and, for example, by a GMR sensor (giant magnetic resistance) is formed. It is also possible to use one as an attack detector Use acceleration sensor, especially an electromechanical or micro-electromechanical accelerometer. Moreover can be provided an optoelectronic sensor, the changes in length or vibrations, for example due to interference effects, using speckle patterns based on the principle of an optical Mouse, or due to a change in amplitude due to light scattering detected in a glass fiber. Alternatively, the attack detector can also be used for Detection of microphonic effects or - as a dielectric sensor - for Detection of charge shifts due to capacitor effects be trained.

According to an advantageous development, the lock is equipped with a Lock position detector equipped, the a closed state of the Window or the door can detect. By means of such a Lock position detector can thus be detected, for example, whether that the window in question is closed, or whether it is open or tilted. A corresponding closed position signal can be generated by means of the status signal transmitter to the central intrusion detection system. On in this way the lock according to the invention enables the user additionally a central control over whether the outer skin of the concerned Building is properly closed.

In a corresponding manner, the lock can - alternatively or additionally the closed position detector - have a bolt position detector, through which it can be determined whether the locking bolt of the lock is in the Unlocked position or in the locked position. By doing a corresponding locking position signal by means of the status signal transmitter can be forwarded to the intrusion detection system a central control due to such a locking position detector the correct locking condition of the outer skin of the person concerned Building.

The said closed position detector and the locking position detector are preferably for essentially currentless monitoring educated. For this purpose, you can use a Electromechanical contact switches are formed in which by change the closed position of the window or door or by change the locking position of the locking bolt an opening or closing a electrical circuit is caused and detected. Moreover can the closed position detector or the bolt position detector be formed by a magnetomechanical contact switch, for example by interacting with a permanent magnet Reed contact. Furthermore, use comes for example a magnetoresistive sensor, an inductive proximity sensor or an optoelectronic sensor, in particular a light barrier in Consideration.

The closed position detector and the latch position detector are preferred coupled to the state signal transmitter such that a Closed position signal or a bolt position signal only to the Burglar alarm system is transmitted when there is a change in the The window or door has closed position, or if one Change in the closed position of the locking bolt has occurred. alternative For this purpose, a corresponding signal can be transmitted in predetermined Time intervals can be provided. In both cases, however no query of a current closed position signal or bolt position signal through the intrusion detection system, but the intrusion detection system saves the last received signal in an event memory, to access it at any later time can. This type of signal transmission to the intrusion detection system has the advantage that the lock is not equipped with a receiver that receives a signal request from the intrusion detection system. Such a receiver would have - especially with wireless Connection to the intrusion detection system - an undesirable high energy consumption.

In a further preferred embodiment of the invention, a Evaluation and control device provided at predetermined time intervals the transmission of a function confirmation signal to the Burglar alarm system initiated by the status signal transmitter. A supervision function is thereby realized: by checking whether such a function confirmation signal from the lock at the expected times the intrusion detection system can be transmitted monitor whether the lock is still working properly, or whether, for example, the energy supply is disrupted. In particular, the Evaluation and control device before the transmission of the function confirmation signal perform an internal function check, for example to check the attack detector for functionality. This type of function monitoring also has the advantage that The lock does not have to be specially equipped with a receiver that to receive an interrogation signal from the intrusion detection system and to must be permanently supplied with energy for this purpose.

It is also advantageous if the lock has a sabotage contact has an attempt at an unauthorized dismantling of the castle or a part thereof is able to detect, in particular by means of the status signal transmitter - a corresponding dismantling signal to be sent to the intruder alarm system. Such a sabotage contact can, for example, by an electromechanical contact switch be educated.

Furthermore, it is preferred if the status signal transmitter for a wireless Transmission of signals to the intrusion detection system and has a radio transmitter for this purpose. Alternatively can also be a wired connection to the intrusion detection system be provided.

It is also preferred if the lock is an autonomous energy source, for example, has an electric battery, so no connection to an external energy source, especially the public one Power grid is required.

Finally, it is possible to use all parts of the castle Exception of a lock box for receiving the locking bolt in the Locking position - can be accommodated within a single housing. In favor of a low variety of parts and less storage effort However, it is advantageous if the components of the additional lock on the one hand within a standard lock housing and otherwise within a related supplementary housing are arranged. This means that a standard housing can be used the same for additional locks without an attack detector and State signal transmitter is used. It is also possible to use the Alerting function using the attack detector and the status signal transmitter as a retrofittable additional module to a correspondingly prepared one Offer standard lock or standard additional lock.

Fig. 1

eine Perspektivansicht eines erfindungsgemäßen Schlosses, und

Fig. 2

eine schematische Querschnittsansicht dieses Schlosses.

Further embodiments of the invention are mentioned in the subclaims. The invention is explained below by way of example with reference to the drawings; in these show:

Fig. 1

a perspective view of a lock according to the invention, and

Fig. 2

a schematic cross-sectional view of this castle.

Fig. 1 shows a lock according to the invention in the form of an additional window lock in a typical arrangement on a window sash 11. This additional lock has a housing 13, on the top of which Lock cylinder 15 can be seen. The housing 13 borders laterally

Supplementary housing 17. In addition, an actuator is located on the housing 13 19 for a locking bolt that is in the state 1 is in a locking position and not visible is.

On a window frame 21, a lock case 23 is attached, which is adjacent to the housing 13 and thereby the actuating element 19 is arranged opposite. The lock box 23 is used for recording the front end of the locking bolt in its locking position. This makes the window sash 11 - in addition to another, in Fig. 1 locking device, not shown - against an unauthorized Opening secured.

According to the invention, an alarm function is in addition to this security function by connecting the additional lock to an intrusion detection system intended. For this, the additional lock is provided with funds to detect a break-in attempt and to transmit a corresponding one Provide the intrusion detection signal to the intrusion detection system, as explained below.

Fig. 2 shows a schematic cross-sectional view of the additional lock 1 can be seen a locking bolt 25 which at one end with the actuator 19 is connected and its free end in one Recess of the lock box 23 engages. In the locking position shown of the locking bolt 25 is through the locking cylinder 15 secured. When unlocking the lock cylinder 15 by means of of the associated identification means, in particular a key, is the

Lock bolt 25 released for movement into an unlocked position.

According to the invention, the additional lock has an attack detector 27, which is formed by a piezoelectric disc, which is flat on the Bottom of the additional lock is present, for example with the lock housing 13 is glued.

Possible changes in voltage of this piezoelectric disk 27 are connected by an evaluation and control device connected to it 29 which, for example, an input amplifier stage, a low pass and a comparator or in one digital version, for example, an input amplifier stage, a Has analog / digital converter, a digital filter and a microprocessor. The evaluation and control device 29 is equipped with a radio module trained state signal transmitter 31 connected to this Transmission of detection and signal signals to a - not shown - central Intrusion alarm system. The evaluation and Control device 29 and the state signal transmitter 31 are in the Supplementary housing 17 arranged.

The additional lock shown in FIG. 2 also has a closed position detector 33 through which can be detected whether the window is working properly is closed, i.e. whether the window sash 11 on the window frame 21 is present. The closed position detector 33 is through a reed contact 35 formed with the evaluation and control device 29 is connected and within the housing 13 to the lock box 23 facing side is arranged. This reed contact 35 cooperates a permanent magnet 37 together inside the lock box 23 at a corresponding height on the housing 13 facing Side sits.

In addition, a locking position detector 39 is inside the housing 13 provided that has an electromechanical contact switch 41, which cooperates with a recess 43 on the locking bolt 25. The locking position detector 39 detects on the basis of an intervention by the Contact switch 41 in the recess 43, whether the locking bolt 25 in the unlocked position or - as shown in the figures - in the Locked position. The locking position detector 39 is also connected to the evaluation and control device 29.

Finally, the additional lock for supplying the evaluation and Control device 29, the status signal transmitter 31, the closed position detector 33 and the bolt position detector 39 with electrical Power an electric battery 45, which is shown in FIG Example is arranged within the supplementary housing 17.

The mentioned alarm function is performed by the one shown in the figures Additional lock exercised in that the attack detector 27 Window permanently monitored for a possible break-in attempt. Such a break-in attempt causes on the window sash 11 namely shocks and thus vibrations - and still before permanent damage to the window is caused. These vibrations go through at the location of the additional lock slight changes in length noticeable.

Such changes in length are detected by the attack detector 27 in electrical voltages converted due to their particular Frequency and amplitude characteristics from the evaluation and control device 29 filtered out and assigned a break-in attempt can be. In the event of such detection of an attempted break-in causes the evaluation and control device 29 to send the status signal transmitter 31 immediately for radio transmission of an attack detection signal to the burglar alarm system, so that this one, for example acoustic alarm signal and notification of a security service can trigger.

In addition, by means of the closed position detector 33, for example in regular intervals, checked whether the window sash 11 properly abuts the window 21. In case of a change compared to the The last detected closing state of the window is by means of the state signal transmitter 31 a corresponding closed position signal to the Burglar alarm system transmitted. This registers the change made in an event log.

The latch position detector 39 functions in a corresponding manner: If the locking bolt 25 between the unlocked position and the locked position is actuated, this leads to the contact switch 41 a closing or opening of an electrical circuit, so that the Change of the bolt position from the evaluation and control device 29 is registered and this is corresponding via the status signal transmitter 31 Bolt position signal to the intruder alarm system or its Event log submitted.

a) Falls sich aufgrund der im Ereignisspeicher abgelegten Signale ergibt, dass das betreffende Fenster geschlossen und mittels des Schließriegels 25 verriegelt ist, so ergeben sich bei der Aktivierung der Einbruchmeldeanlage durch den Benutzer keine Besonderheiten.

b) Falls sich jedoch aufgrund der zuletzt an die Einbruchmeldeanlage übermittelten Signale ergibt, dass das Fenster verriegelt, jedoch nicht geschlossen (sondern beispielsweise gekippt) ist, so liegt offensichtlich ein Versehen des Benutzers vor, und die Einbruchmeldeanlage gibt bei ihrer Aktivierung ein entsprechendes Alarmsignal für den Benutzer aus.

c) Falls bei Aktivierung der Einbruchmeldeanlage - gemäß dem zuletzt übermittelten Schließstellungssignal - der Schließriegel 25 des Zusatzschlosses sich nicht in der Verriegelungsstellung befindet, so übermittelt die Einbruchmeldeanlage an den Benutzer eine Kontrollaufforderung, damit dieser nochmals bestätigt, ob trotz nicht verriegelten Fensters die erwünschte Aktivierung der Einbruchmeldeanlage ausgeführt werden soll.

This closed position signal transmitted to the intruder alarm system and stored there in the event memory and the bolt position signal can be used, for example, to control the intruder alarm system if it is to be activated by the authorized user for a desired monitoring of the building. The signals can be used as follows, for example:

a) If, based on the signals stored in the event memory, it appears that the window in question is closed and locked by means of the locking bolt 25, then no particulars arise when the intruder alarm system is activated by the user.

b) However, if the last signals sent to the intrusion detection system indicate that the window is locked, but not closed (but tilted, for example), then the user is obviously in error and the intrusion detection system gives a corresponding alarm signal when it is activated the user.

c) If, when the intruder alarm system is activated - according to the last transmitted locking position signal - the locking bar 25 of the additional lock is not in the locking position, the intruder alarm system transmits a control request to the user so that he again confirms whether the desired activation of the despite the unlocked window Burglar alarm system to be executed.

Regarding the additional lock shown in the figures, it should also be noted that that the distribution of the components of the additional lock on the housing 13 on the one hand and the supplementary housing 17 on the other in any Way can take place, in particular taking into account the one Additional lock standard housing available space. For example The division also takes place in such a way that no physical connection between the housing 13 and the supplementary housing 17 required but the signals of the detectors arranged in the housing 13 in a wireless manner to the supplementary housing 17 or the contained therein Components are transmitted.

It should also be noted that such an additional lock for a special reliable security function even with two locking bolts 25 can be equipped.

LIST OF REFERENCE NUMBERS

11

casement

13

casing

15

lock cylinder

17

Additional information housing

19

actuator

21 1

window frame

23

lock box

25

deadbolt

27

attack detector

29

Evaluation and control device

31

State signal transmitter

33

Closed position detection

35

Reed contact

37

permanent magnet

39

Bolt position detector

41

contact switch

43

recess

45

electric battery

Claims (10)

Lock for a window (11, 21) or a door, at least with a locking bolt (25) which can be moved from an unlocking position into a locking position in order to secure the window or door against unauthorized opening, an attack detector (27) by means of which a break-in attempt on the window or door can be detected in a non-destructive manner, and a status signal transmitter (31), by means of which an intrusion detection signal can be transmitted to an intrusion detection system when an intrusion attempt is detected. Lock according to claim 1,
characterized in that the attack detector (27) is designed to detect mechanical vibrations and / or to detect changes in length, and / or that the attack detector (27) is a piezoelectric sensor, a GMR sensor, an acceleration sensor, an optoelectronic sensor, a microphone or has a dielectric sensor. Lock according to one of the preceding claims,
characterized in that the lock has a closed position detector (33) through which a closed state of the window (11, 21) or the door can be detected,
wherein the closed position detector (33) preferably has an electromechanical contact switch, a magnetomechanical contact switch - in particular a reed contact switch (35, 37) -, a magnetoresistive sensor, an inductive proximity sensor or an optoelectronic sensor, and / or
a closed position signal can preferably be transmitted to the intrusion detection system by the status signal transmitter (31). Lock according to one of the preceding claims,
characterized in that the lock has a bolt position detector (39) which can be used to detect whether the locking bolt (25) is in the unlocked position or in the locked position,
wherein the locking position detector (39) preferably has an electromechanical contact switch (41, 43), a magnetomechanical contact switch - in particular a reed contact switch -, a magnetoresistive sensor, an inductive proximity sensor or an optoelectronic sensor, and / or
wherein the status signal transmitter (31) preferably transmits a locking position signal to the intrusion detection system. Lock according to one of the preceding claims,
characterized in that the lock has an evaluation and control device (29) for evaluating the detector signals and / or for controlling the status signal transmitter (31). Lock according to claim 5,
characterized in that the evaluation and control device (29) is designed to evaluate the signals of the attack detector (27) according to their frequency characteristic, according to their amplitude characteristic and / or according to the time behavior of signal sequences detected, and / or that the evaluation and control device (29) is configured to control the status signal transmitter (31) such that in the event of a change in the closed position of the window (11, 21) or the door, or a closed position signal is transmitted to the intrusion detection system at predetermined time intervals. Lock according to one of claims 5 or 6,
characterized in that the evaluation and control device (29) is configured to control the status signal transmitter (31) such that in the event of a change in the position of the locking bolt (25), or a locking position signal is transmitted to the intrusion detection system at predetermined time intervals, and / or the evaluation and control device (29) is configured to control the status signal transmitter (31) in such a way that a function confirmation signal is transmitted to the intrusion detection system at predetermined time intervals. Lock according to one of the preceding claims,
characterized in that the lock has a sabotage contact, by which an attempt to unauthorized dismantling of the lock or a part thereof can be detected and the transmission of a dismantling signal to the intrusion alarm system can be triggered. Lock according to one of the preceding claims,
characterized in that the status signal transmitter (31) has a radio transmitter for wireless transmission of signals to the intrusion detection system, and / or that the lock has an energy source, in particular an electric battery (45). Lock according to one of the preceding claims,
characterized in that the lock has a locking cylinder (15) for locking or unlocking the locking bolt (25), and / or in that the components of the lock are arranged at least within a lock housing (13) and a supplementary housing (17), and / or that for Receiving the locking bolt (25) in the locking position, a lock box (23) which can be fastened to the window (21) or the door is also provided, and / or the lock is designed as an additional window / door lock.

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