EP0744002B1 - Alarm-triggering locking device for the catch and/or hinge region of a door or window to be protected - Google Patents

Abstract

PCT No. PCT/EP94/03796 Sec. 371 Date Aug. 13, 1996 Sec. 102(e) Date Aug. 12, 1996 PCT Filed Nov. 16, 1994 PCT Pub. No. WO95/21980 PCT Pub. Date Aug. 17, 1995An alarm-triggering locking mechanism for the lock and/or hinge area of a door to be secured or a window to be secured is proposed, which is embodied as a locking plate (23) which can be attached to a door or window frame by means of holding screws (27) embodied as the first blocking device. A second blocking device, which is harder to overcome by the effect of force, is embodied as at least one striker element (25) rigidly connected with the locking plate (23) and which, following the limited movement of the locking plate (23) in the opening direction, comes to rest against a counter-striker element (26) anchored on the door or window frame. An alarm, in particular a silent alarm, is triggered via radio or the telephone net after the first blocking device has been overcome. The burglar is thereafter delayed by the second blocking device, which makes it possible for security forces to reach the location of the break-in and to arrest the burglar while the break-in is still in progress.

Description

The invention relates to an alarm-triggering striking plate for the closing area of a door or one to be secured window to be secured according to the preamble of claim 1.

The principle of operation of this striking plate is known from DE 42 21 585 A1 and consists in that at a break-in in the event of violence first a first Holding device is overcome, however an alarm is triggered. This is it preferably a silent alarm, in which the An alarm center is reported. After triggering of the alarm, however, the burglar is now the second Holding device to prevent intrusion into the building prevented him from facing the first detent offers greater resistance. Now he has to make greater efforts, this second holding device to overcome, taking the necessary Time for the helpers or the police there to get to the burglary site.

The known locking device is an additional Fuse element formed, which is an additional Material and cost expenditure in the manufacture and assembly means. In addition, this is problematic additional safety device in optically neutral and not disruptive to assemble.

In a striking plate known from EP-A-0 293 952 according to the preamble of claim 1, this is in a force in the opening direction of the door moved against the force of a spring until the stop elements in the opening direction in contact with the side Limit the openings of an element. During such a movement of the striking plate Alarm triggered. This known arrangement has the disadvantage that such coil springs already with relative little effort must be overcome and the danger of false triggers when properly opened and The door closes, at least when the springs by aging or the like. lose their spring force. A Another disadvantage is that when subjected to violence by first deflecting the striking plate Alarm is triggered. However, the burglar then breaks attempts to break in, the striking plate arrives by spring force back to the original position, and it can then not be determined whether the alarm is on Was created due to an attempted break-in or whether a There was a false alarm due to an electrical malfunction.

The object of the present invention is to create an alarm locking device that safer between normal use and a break-in can distinguish and in a simple manner instead of one conventional striking plate on a locking area can.

This object is achieved by the features of Claim 1 solved.

The striking plate according to the invention can in a simple manner can be used instead of a known striking plate and is therefore also suitable for retrofitting. It is easily in the form of known striking plates feasible, especially in the form of striking plates with an L-shaped cross-section in the closing area of a door or a window or striking plates in the hinge area.

The realization of the predetermined breaking points through simple retaining screws has the advantage that a simple one and inexpensive holding device is created, the up to a relatively large force value of an impact withstands and then irreversibly overcome is so that on the one hand a defined triggering force easily is feasible and on the other hand a break-in attempt an alarm trigger is easily detectable. This Benefits can be gained through simple and inexpensive means can be achieved.

A burglar notices when opening a door or a window does not have an alarm system installed is, especially if this with a silent alarm is provided, that is, when overcoming the first Holding device is a radio or telephone alarm a security company manned around the clock. If the burglar after overcoming the first Holding device on the more difficult to overcome bumps second holding device, he will either give up at trial or caught red-handed and can be arrested because after triggering the Alarms by the second holding device in time is bound. He can therefore be arrested in general even before it gets into the building. The one through this The type of backup-related repressive success is likely long-term preventive effects, leading to a significant Damage reduction should lead. Especially with already installed alarm systems with silent alarm is the additional financial and assembly costs for the Attachment of the striking plates according to the invention relatively low.

By the measures listed in the subclaims are advantageous developments and improvements of striking plate specified in claim 1 possible.

An advantageous constructive training consists in that the striking plate at least partially under one the door or window frame anchored as a counter-stop element trained angle bar is arranged one the first after overcoming the striking plate Retaining device used holding screws in the Has opening allowing passage, wherein two make the angles on either side of the recess subordinate stop elements arranged on the striking plate are. After tearing or tearing out as the first holding device used retaining screws can do that Strike plate below the angle bar in the opening direction be moved until the stop elements in Get to the system on the angle bar. This sets as Counter stop element only now the further opening movement an increased resistance to, with of their total holding power. This version requires in essentially no milling in the door or window frame.

The striking plate is also advantageously as Angled sheet metal, the not the stop elements supporting leg of this angle plate one in essentially corresponding to the recess in the angle bar Has shape and in the original assembly state is arranged flush in this recess to achieve a flat, stepless outer contour.

To prevent the striking plate from being larger Bending force bent so that the stop elements can slide out of the recess, at least one of the stop elements one in the stop position effective interlocking with the angle bar for prevention a relative movement between the striking plate and the angle bar in the longitudinal direction.

The alarm-triggering means are used in an advantageous manner is known to be subjected to current and / or voltage Tear wires or magnetically or mechanically triggerable electrical switches, when the relative movement of the Give an alarm signal to the striking plate.

Fig. 1

eine perspektivische Darstellung eines teilweise unterhalb einer Winkelleiste angeordneten Schließblechs als erstes Ausführungsbeispiel der Erfindung,

Fig. 2

das in Fig. 1 dargestellte Schließblech in einer separaten Darstellund

Fig. 3

eine perspektivische Darstellung eines weiteren Schließblechs als zweites Ausführungsbeispiel der Erfindung,

Fig. 4

eine das in Fig. 3 dargestellte Schließblech aufnehmende Halteleiste,

Fig. 5

eine Schnittdarstellung eines dritten Ausführungsbeispiels der Erfindung und

Fig. 6

eine Schnittdarstellung eines vierten Ausführungsbeispiels der Erfindung.

Embodiments of the invention are shown in the drawing and explained in more detail in the following description. Show it:

Fig. 1

2 shows a perspective view of a striking plate partially arranged below an angle bar as the first exemplary embodiment of the invention,

Fig. 2

the striking plate shown in Fig. 1 in a separate Darstellund

Fig. 3

2 shows a perspective illustration of a further striking plate as a second exemplary embodiment of the invention,

Fig. 4

a holding bar receiving the striking plate shown in FIG. 3,

Fig. 5

a sectional view of a third embodiment of the invention and

Fig. 6

a sectional view of a fourth embodiment of the invention.

1 and 2 as the first embodiment Alarm triggering striking plate 28 is shown as Angle plate with an essentially L-shaped cross-section trained and is not in the assembled state shown frame of a door or a window let in. An arrow 11 indicates the Opening direction of the door, not shown, or not shown window. In the assembled state first aligned parallel to the opening direction Leg 29 of the striking plate 28 are in itself known manner, a bolt entry opening 13 and a Trap entry opening 14 arranged, in each of which Latch and bolt of a door lock, not shown intervention.

The first leg 29 of this striking plate 28 is in the assembled state covered by an angle bar 30, which has a greater length than the striking plate 28 and with a corresponding bolt entry opening 13 and Trap inlet opening 14 is provided so that this Openings in the basic state according to FIG. 1 with each other swear. The second, perpendicular to the first leg 29 arranged leg 31 of the striking plate 28 is located 1 flush in a corresponding state in the basic state Recess of the angle strip 30. The second leg 31 protrudes beyond the first leg 29 by an amount, which corresponds to the sheet thickness of the angle bar 30, um to achieve flush and stepless surfaces. Here the protruding area 32 can also be the first Leg 29 overlap by a certain amount, the Recess in the angle bar 30 adapted accordingly is.

Extend from the free end region of the first leg 29 in the longitudinal direction towards both sides integrally molded stop elements 33 which on their to the second leg 31 facing side with tooth recesses 34 are provided. Corresponding gear elements 35 are on the corresponding inner corner areas the angle bar 30 arranged.

The angle bar 30 is by means of six heavy-duty Retaining screws 36 on the frame of a door or a window anchored. Three more weaker retaining screws 37 serve as predetermined breaking points and run through the Angle bar 30 and screw holes 38 of the arranged below Strike plate 28 in the frame mentioned.

The original assembly state is shown in Fig. 1. For example, if the door is violently broken open a force occurs in the direction of the lever Arrow 11 on. Tear from a certain effort the as predetermined breaking points or first holding device serving screws 37 or shear off. This can the striking plate 28 relative to the angle bar 30 in move the direction of the arrow 11 until the Stop elements 33 in contact with the inner corner area of the Angle bar 30 arrive and there with the toothing elements 35 teeth.

When breaking off the striking plate after pulling out the Retaining screws 37 is made by a known Set up an alarm signal that is transmitted via radio or Telephone a security company staffed around the clock is forwarded.

Now the door or window is around a small one Slit opened, but now the stronger retaining screws are set another attempt to break open an increased one Resistance to. The burglar is now timed bound, so that the security company or the police Opportunity is given to get to the burglary site and arrest the burglar, possibly before he got into the building.

Known alarm triggers can also be used to trigger the alarm Means are used, such as magnetic switches or mechanically triggered electrical switches that control movement register the striking plate 28 in the opening direction. A current conductor serving as an alarm wire can also on the frame of the door or window opening or on The striking plate should be fixed so that it is open or closed The attempt to break in breaks. Of course, with the Locking device according to the invention not only door or Window openings, but also other openings accordingly be secured.

The teeth by means of the tooth recesses 34 and the gear elements 36 cause the Strike plate 28 not by bending the stop elements 33 from the corresponding opening of the angle bar 30 can bend out.

Of course, the number, arrangement and shape of the Screws and screw holes are not shown Embodiment limited.

It is common in all of the exemplary embodiments that the retaining screws each serving as predetermined breaking points or holding plate must be dimensioned so that they relatively easy to overcome when attempting to break out are that, on the other hand, they bear the burdens of withstand daily use.

The second shown in Fig. 3 in connection with Fig. 4 Embodiment of the invention is similar to that in 1 and 2 shown first embodiment built up and mainly used for doors, such as in Great Britain or in the USA be used. Such doors are down to that Door lining can be swiveled in, and the latch or bolt of the door lock engages in the flat on the inner surface of the door chuck attached. Of course is the embodiment shown in Figs. 3 and 4 also for appropriately constructed windows applicable.

In contrast to the first embodiment, here is a Strike plate 50 is provided with a flat shape, which in assembled state covered by an angle bar 51 which is a greater length than the striking plate 50 owns. The striking plate 50 has a latch entry opening 14, which is also designed as a bolt entry opening 13 can be, both openings also being provided could be. The in the assembled state parallel to the Strike plate 50 arranged first leg 52 of the angle bar 51 has a recess into which the middle, protruding and having the trap entry opening 14 Area 53 engages so that its outer surface is flush with The outer surface of the first leg 52 runs. His The striking plate 50 has both end regions at an angle Stop elements 54 that are at right angles from the first Leg 52 engage behind projecting second leg elements 55. These leg elements 55 have recesses 56, behind which the angular stop elements 54 so are arranged that their free legs through these recesses 56 are pushed through when the striking plate 50 is violently pulled out of its anchorage.

The sections of the first leg 52 and the parts arranged thereon second leg elements 55 are via a connecting bar 57 connected to each other, parallel to first leg 52 is arranged offset so that it assembled state arranged on or within the door border is. The first leg 52 is via connecting webs 58 connected to the connecting bar 57.

The striking plate 50 has three screw holes 59, wherein aligned screw holes 60 in the connecting bar 57 and the first leg 52 are provided by only one in the perspective view Screw hole 60 in the middle area of the connecting bar 57 is arranged on an extension of the same.

For assembly, the striking plate 50 is in or under the Angle bar 51 pushed that the screw holes 59 with the corresponding screw holes 60 and the protruding central region 53 of the striking plate 50 in the corresponding recess of the first leg 52 of the Angle bar 51 is arranged. In this state the arrangement consisting of striking plate 50 and angle bar 51 by means of retaining screws 61 to the inner surface of the Door border or in a corresponding recess of the same screwed. In Fig. 4 there are only two heads Retaining screws 61 shown in the assembled state through the two outer screw holes 59 of the striking plate 50 go through. For the rest, the angle bar 51 by further, not shown, stronger retaining screws 61 screwed to the door surround. This For example, there are stronger retaining screws the two outer areas of the angle bar 51, which as a result 4 in the cut-off area are arranged.

If the door (or window) is opened by force, for example levered open, so break or tear the retaining screws 61, and the striking plate 50 becomes perpendicular to its longitudinal direction shifted so that the angle-like Stop elements 54 pushed through the recess 56 until the angle stop is reached becomes. When the retaining screws 61 are torn or when they are moved of the striking plate 50 are already described in Wise alarm-triggering means. The striking plate 50 reaches its stop position at the second leg elements 55, so now the stronger retaining screws on the angle bar 51 are overcome become what binds the burglar temporally.

In a modification of the illustrated and described exemplary embodiments can be used as a second holding device a stop element rigidly connected to the striking plate also one with the door or window sash connected stop element kick that after tearing of the striking plate in the opening direction after a limited opening movement in contact with a counter stop element reached the door or window border.

In the third embodiment shown in FIG. 5 is a strip-like, approximately L-shaped in cross section Counter stop element 61 in a corresponding Recessed in the door or window sash 62, wherein a holding leg arranged at the bottom of the recess 63 by means of retaining screws 64 on the door or Window sash 42 is fixed. A protruding vertically from it Counter stop leg 65 points to the door or Window sash 66 out. A three-legged Strike plate 67 is parallel to its middle Holding leg 63 of the counter-stop element 62 extending Leg 69 by means of retaining screws 64 on the counter stop element 65 attached. It extends from one end of the middle leg 69 from a stop element 70 for Holding leg 63 back and is there while from opposite end of the middle leg 69 from a Locking leg 71 for the door or window sash 66 extends. Between the stop leg 70 and the There is a space against the stop leg 65 72. A projection 73 on the stop leg 70 extends to the counter-stop leg 65, the one on its opposite Place has a corresponding recess 74. A plastic plate 75 is by means of a screw 76 (there may also be several screws) on the counter stop leg 65 fixes that the recess 74 covers becomes. This plastic plate 75 contributes to simplification alarm wires, not shown, their tearing leads to the triggering of the alarm.

A trap 77 is in the door or window sash 66 Strike plate 77 guided displaceably and is spring-loaded so on the striking plate 67 that they have an opening movement de door or window wing 66 in the opening direction 11 prevented by contact with the locking leg 71.

To open the door or window wing 66, the trap 77 by an operating handle, not shown, or an electromagnetic actuator, not shown withdrawn so that they are out of engagement with the locking leg 71 arrives and the door or Window sash 66 can be opened. In the case of a door can additionally or in a manner known per se alternatively, a latch can be provided. Instead of the locking leg 71 can also have a locking recess occur in which the latch 77 or the latch engages.

Is in the locked state shown the door or Window sash 66 by force, for example by prying it open, moved in the opening direction 11, so break first the retaining screws 64 and the striking plate 67 moves in the opening direction 11 until the Stop leg 70 of the striking plate 67 in contact with the Counter stop leg 65 of counter stop element 62 reached. The projection 73 engages in the recess 74, and the plastic plate 75 breaks and releases the Alarm off. To open the door or window sash further 66 must now be the much higher mechanical Resistance due to the stronger anchoring of the counter stop element 62 what the perpetrator in time-bound in the manner already described.

In the fourth embodiment shown in FIG. 6 are the same or equivalent components provided the same reference numerals and not described again. A modified counter-stop element compared to FIG. 5 78 is pivotable via a swivel joint 79 attached to a holding part 80 which in the door or Window border 42 inserted and there in a not shown Is fixed firmly, for example by Retaining screws. The swivel joint 79 is located here seen in the opening direction 11 on the outer Connection point between the counter stop element 78 and the holding part 80. At the end region remote from the swivel joint 79 of the holding leg 63 of the counter stop element 78 extends from a projection 81 into a corresponding one Recess of the holding part 80 into it. This lead 81 has a locking recess 82 in which a locking bolt 83 an electromagnetic Locking device 84 can engage.

Instead of the electromagnetic locking device 84 can in principle also be operated from the inside mechanical locking device occur, or it can another known mechanical or electromagnetic Locking device to prevent Pivotal movement of the counter stop element may be provided.

In the unlocked state of the locking device 84 takes place when the door or window sash 66 is opened Pivotal movement of the associated with the counter-stop element 78 Strike plate 67, so that the latch 77 after a certain pivoting movement the locking leg 71st can happen. When closing the door or window sash 66 (this also applies to the design according to Fig. 5) the trap 77 can return to its original position pivoted back locking leg 71 as a result of their overcome the rear bevel and return to the original position reach.

In the locked position of the electromagnetic locking device 84 engages the locking bolt 83 in the locking recess 82 of the projection 81, so that the counter-stop element 78 firmly on the holding part 80 and so that is fixed to the door or window border 42. In This condition occurs when the Door or window wing 66 breaking the retaining screws 64, and the alarm is triggered as in FIG. 5 illustrated embodiment. The one shown in Fig. 6 fourth embodiment needs the trap In contrast to the third exemplary embodiment, none electrical or manual actuation device.

Claims (13)

1. Alarm-triggering striking plate for the closing area of a door or window which is to be secured, with a first locking device for the striking plate (28; 50; 67), to be overcome by force and provided with one or more stop elements (33; 54; 70), with a second locking device for the striking plate (28; 50; 67), to be overcome by greater force, in the form of one or more counter-stop elements (30; 51; 62) anchored on a door or window edge, and with means which trigger an alarm when the first locking device is overcome, wherein movement of the striking plate (28; 50; 67) in the direction of opening of the door or window after the first locking device has been overcome is limited by the second locking device, characterized in that the striking plate (28; 50; 67) is directly or indirectly attachable to the door or window edge (42) by means of fixing screws (37; 61; 64), which tear, break or shear off after a certain expenditure of force, designed as the first locking device and serving as predetermined breaking points.
2. Striking plate according to claim 1, characterized in that the striking plate (28; 50) is mounted at least partly below an angle strip (30; 51) anchored to the door or window edge and in the form of a counter-stop element, which has a recess allowing passage of the striking plate (28; 50) in the opening direction after the fixing screws (37; 61) used as first locking device have been overcome, and that two stop elements (33; 54) engaging beneath the angle strip (30; 51) on either side of the recess are arranged on the striking plate (28; 50).
3. Striking plate according to claim 2, characterized in that the striking plate (28) is similarly in the form of an angle plate, and that the limb (31) of this angle plate (28) not carrying the stop elements (33) has a shape essentially matching the recess in the angle strip (30), and is fitted flush in this recess in the original fitted state.
4. Striking plate according to any of the preceding claims, characterized in that the striking plate (50) has a flat shape.
5. Striking plate according to any of claims 2 to 4, characterized in that one or more of the stop elements (33; 54) has an interlocking facility (34; 56) with the angle strip (30; 51), effective at least in the stop position, to prevent any relative movement between striking plate (28; 50) and angle strip (30; 51) in the longitudinal direction.
6. Striking plate according to claim 1, characterized in that the striking plate (67) combined integrally with the stop element (70) is fitted by means of the fixing screws (64) or bolts acting as first locking device to the counter-stop element (62; 78) which may in turn be anchored to the door or window edge (42).
7. Striking plate according to claim 6, characterized in that the stop element (70) and the counter-stop element (62; 78) have a reciprocal interlocking facility (73; 74).
8. Striking plate according to claim 6 or 7, characterized in that the counter-stop element (62) may be securely anchored to the door or window edge (42) by means of fixing screws (68) or bolts.
9. Striking plate according to claim 6 or 7, characterized in that the counter-stop element (78) is pivotably attached to a retaining element (80) which may be securely anchored to the door or window edge (42), and that an electrically or manually operable locking device (84) for the swivel movement is provided.
10. Striking plate according to any of claims 6 to 9, characterized in that a catch (77) or bolt, held by spring force in engagement with a shoulder (71) or recess of the striking plate (67), is provided for attachment to the door or the side of the window (66).
11. Striking plate according to claim 10, characterized in that the catch (77) or bolt is designed to be movable from the engaged position manually or electrically.
12. Striking plate according to any of the preceding claims, characterized in that a thin plastic plate (75) carrying the alarm-triggering means, breaking when the stop element (70) moves towards the counter-stop element (62; 78) and thereby triggering the alarm, is mounted between the stop element (70) and the counter-stop element (62; 78).
13. Striking plate according to any of the preceding claims, characterized in that contact-breaking wires with live current and/or voltage or magnetically or mechanically-triggerable electric switches are provided as means of triggering an alarm.

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