EP3594435B1 - Alarm signaller for a door locking system - Google Patents

Description

The present invention relates to an alarm transmitter, in particular a retrofittable alarm transmitter, for a door locking system with a locking bolt movable in the direction of its longitudinal extension between an unlocking position and a locking position and a lock box receiving the locking bolt in its locking position.

An alarm device with the features of the preamble of claim 1 is from U.S. 3,810,145 A known. Furthermore, the CA 1 000 383 A an actuator for an alarm circuit.

A door locking system is usually used to secure a door against unauthorized opening or against a forced break-in attempt. For this purpose, the door locking system usually comprises a housing, which can be mounted on a door leaf of the door, for receiving a locking bolt which is oriented transversely to the door and which can be moved in its longitudinal extension between an unlocking position and a locking position. The locking bolt is moved laterally out of the housing of the door locking system when it moves from the unlocking position into the locking position. In the locked state of the door locking system or in the locking position of the locking bolt, this is received in a lock box, which is usually fixedly attached to a frame of the door or to a soffit, ie to a wall enclosing the door.

The door locking system can be designed, for example, in the form of a compact additional door lock, in which the housing receiving the locking bolt is usually attached to the side of the door leaf of the door and the lock box receiving the locking bolt in the locking position is attached to the door frame or soffit. A door locking system includes, however also an armored bolt system, in which the housing for receiving an armored bolt in its unlocked position extends essentially over the entire width of the door. The armored bolt system often has not just one armored bolt, but two armored bolts that can move in opposite directions, which, when the armored bolt system is locked, are held in lock boxes mounted on opposite sides of the door leaf, so that the door can no longer be broken open, or at most only with increased effort.

One object of the invention is to increase the security of a door locking system.

The object is achieved by an alarm transmitter with the features of claim 1. The alarm transmitter according to the invention for a door locking system with a locking bolt that can be moved in the direction of its longitudinal extent between an unlocking position and a locking position and a lock box that receives the locking bolt in its locking position comprises a first switch which serves to detect a locking state of the locking bolt, a second switch which serves to detect a movement of the locking bolt in a direction transverse, in particular at least approximately perpendicular, to its longitudinal extent, and a control device for detecting switching states of the switches and triggering an alarm depending on the detected switching states.

The invention is based on the general idea of recognizing in good time an attempted break-in at a door equipped with a door locking system by detecting an opening process of the door that usually precedes the attempted break-in by means of the alarm device according to the invention, in that a first switch of the alarm device first detects whether a locking bolt of a door locking system is activated is in its locked position, and a second Switch of the alarm transmitter detects a movement of the locking bolt caused by the opening process in a direction transverse to its longitudinal extension, whereby a control device for detecting the switching states of the first and second switches can trigger an alarm as a function of the detected switching states, in particular if the switching states are evaluated positively .

A positive evaluation of the switching states of the switches by the control device means that the locking bolt is received in the lock box and the locking bolt received in the lock box is moved in the direction transverse to its longitudinal extension. As a result, the alarm device's control device recognizes an imminent attempted break-in at the door in good time and generates a warning alarm.

Advantageous embodiments of the invention can be found in the subclaims, the description and the accompanying drawings.

The alarm can, for example, be output in the form of an acoustic and / or optical signal, whereby not only a resident or neighbor is made aware of an attempted break-in, but the person gaining unauthorized access to the apartment can also be deterred. Additionally or alternatively, the alarm can also be output on a mobile terminal of the resident or a security staff and / or in a remote control center of the police or a security service provider.

According to the invention, the alarm transmitter is designed to be plugged onto the lock box, as a result of which a door locking system that is already present on a door can be retrofitted in a simple manner.

The alarm transmitter comprises a first actuating element for actuating the first switch and a second actuating element for actuating the second switch, the first actuating element and the second actuating element protruding into a bolt receptacle of the lock box that is used to receive the locking bolt when the alarm transmitter is attached.

According to an advantageous embodiment of the alarm transmitter, the first actuation element protrudes further into the bolt receptacle of the lock box than the second actuation element when the alarm transmitter is in the state when the alarm transmitter is plugged onto the lock box. The first actuating element protruding further into the bolt receptacle is used together with the first switch to detect a locking state of the locking bolt, in that the locking bolt in the locked state pushes the first actuating element out of the bolt receptacle and changes an actuating state of the first switch, i.e. the first switch depending on its original Actuation state actuated or released.

So that the locking bolt can easily slide into the bolt receptacle of the lock box when it moves in the direction of its longitudinal extension, the first actuating element preferably has a ramp-forming inclined run-up surface for the locking bolt that can be inserted into the bolt receptacle of the lock box. In particular, the inclined contact surface of the first actuating element prevents the locking bolt from tilting with the first actuating element when it moves into the bolt receptacle of the lock box.

The first actuating element and / or the second actuating element can each be assigned a spring element in such a way that the first actuating element and / or the second actuating element can be displaced out of the bolt receptacle against a spring force of the assigned spring element. This ensures that the first actuating element and / or the second actuating element always into the bolt receptacle of the lock box protrude or protrudes, provided that the locking bolt does not press against the first and / or second actuating element. At least one spring element is advantageously designed in the form of a helical compression spring.

According to a further advantageous embodiment of the alarm transmitter, the first and / or second switch is or is mounted on a deflection element in such a way that different switching states of the first and second switch can be brought about by deflection of the deflection element. At least one of the actuating elements is preferably used to deflect the deflecting element. Advantageously, the actuating element which is most distant from a bearing point of the deflecting element, in particular the second actuating element, serves to deflect the deflecting element. The deflecting element is preferably designed as a bending beam, in particular one clamped in on one side. However, it is also conceivable that the deflecting element is a lever that is rotatably mounted about an axis of rotation. The lever is preferably mounted on one side.

In addition to the first and / or second switch, the control device can also be arranged on the deflection element. It goes without saying that the control device can, however, also be arranged on another component of the alarm transmitter, for example on a housing wall of the alarm transmitter.

The invention also relates to a door locking system with a locking bolt displaceable in the direction of its longitudinal extension between an unlocking position and a locking position, a lock box receiving the locking bolt in a locked state and an alarm transmitter according to the invention attached to the lock box.

The first switch and the second switch can have a latch when the alarm transmitter is attached and when the locking bolt is in the unlocked position Define the first switching state. In this switching state, in which the alarm transmitter is in a neutral state, the first switch and the second switch preferably each assume a first switch position.

If the locking bolt is in its locking position, the first switch and the second switch can define a second switching state when the alarm transmitter is attached. In the second switching state, the alarm transmitter is, as it were, armed. The first switch can assume a second switch position, while the second switch continues to assume its first switch position.

A movement of the locking bolt, which is in the locking position, transversely to its longitudinal extension towards the alarm transmitter, e.g. when attempting to pry open the door, can bring about a third switching state of the switch. In particular, the locking bolt received in the bolt receptacle is deflected in the direction of the second actuating element, whereby the locking bolt and the second actuating element come into contact and the second actuating element is pushed out of the bolt receptacle, so that the first and second switch each assume a second switch position.

If the control device detects this third switching state of the switches, the control device triggers the output of an alarm.

It has been shown that an attempt to pry open the door can be recognized particularly well, while at the same time false alarms are reduced, which can be triggered, for example, by lighter vibrations if a distance between the locking bolt received in the bolt receptacle and an inside of the locking bolt facing the locking bolt Bolt holder on which the first and second actuating element protrude into the bolt holder, is at least 0.8 mm, preferably at least 1.0 mm and particularly preferably at least 1.5 mm.

To change a power supply unit of the alarm device, such as a battery or a rechargeable battery, it may be necessary to remove the alarm device from the lock box. If the alarm transmitter is removed from the lock box, the first and second switches can define a fourth switching state in which the first switch preferably assumes its first switch position and the second switch its second switch position.

Fig. 1

eine Teilschnittansicht eines auf einen Schließkasten aufgesteckten erfindungsgemäßen Alarmgebers aus einer ersten Perspektive;

Fig. 2

eine Teilschnittansicht des Alarmgebers von Fig. 1 aus einer zweiten Perspektive; und

Fig. 3

eine Explosionsdarstellung eines Alarmgebers mit Schließkasten.

The invention is described below purely by way of example using an advantageous embodiment with reference to the accompanying drawings. Show it:

Fig. 1

a partial sectional view of an alarm transmitter according to the invention attached to a lock box from a first perspective;

Fig. 2

a partial sectional view of the alarm device from Fig. 1 from a second perspective; and

Fig. 3

an exploded view of an alarm device with a lock box.

The figures show an alarm transmitter 10 for a door locking system which comprises a locking bolt not shown in the figures. The locking bolt of the door locking system can be moved in the direction of its longitudinal extent between an unlocking position and a locking position, the locking bolt being received by a lock box 12 in its locking position. For this purpose, the lock box 12 comprises a bolt receptacle 14 which receives the locking bolt in the locking position.

The alarm transmitter 10 is suitable as a retrofit solution for a door locking system that is already mounted on a door and can be easily attached to the lock box 12.

The lock box 12 forms an immovable counterpart to the locking bolt and for this purpose is fixed in place on a frame of the door or on a soffit. For this purpose, the lock box 12 has two pairs of bores 16 through which fastening means (not shown) for fastening the lock box 12 to the door frame or to the soffit can be inserted. The pair of bores 16 facing the door frame or the reveal serves to fasten the lock box 12 to the door frame or to the reveal by means of the fastening means.

In the attached state of the alarm device 10, a first actuating element 18 and a second actuating element 20 of the alarm device 10 each protrude through a bore 16 of the pair of bores 16 into the bolt receptacle 14, which, when the lock box 12 is fastened, faces away from the door frame or the wall are.

The first actuating element 18 is used to actuate a first switch 22 of the alarm transmitter 10, by means of which a locking state of the locking bolt can be detected. In contrast, the second actuating element 20 is used to actuate a second switch 24, which is provided to detect a movement of the locking bolt received in the bolt receptacle 14 in a direction transverse, in particular at least approximately perpendicular, to its longitudinal extension, ie based on the in Figs. 1 and 2 The illustrated orientation of the lock box 12, an upward movement of the locking bolt is detected. Both the first switch 22 and the second switch 24 are each designed in the form of a pushbutton switch in the exemplary embodiment shown.

How in particular based on Fig. 2 As can be seen, the first actuating element 18 and the second actuating element 20 protrude differently into the bolt receptacle 14, the first actuating element 18 protruding further into the bolt receptacle 14 than the second actuating element 20 12 can be introduced, the first actuating element 18 has an inclined run-up surface 26 for the locking bolt moving into the bolt receptacle 14 of the lock box 12.

Both the first actuating element 18 and the second actuating element 20 can each be pushed out of the bolt receptacle 14 against the spring force of a spring element 28. Two spring elements 28 are assigned to the first operating element 18 and a spring element 28 is assigned to the second operating element 20, whereby a greater force has to be used to move the first operating element 18 than to move the second operating element 20, provided that the spring elements 28 are at least approximately the same Spring force on. In addition, the spring elements 28 assigned to the first actuation element 18 cause an actuation section 29 formed on the actuation element 18 to actuate the first switch 22 when the locking bolt is in the unlocked position. In the illustrated embodiment, each spring element 28 is designed in the form of a helical compression spring.

Furthermore, the alarm transmitter 10 comprises a control device (not shown in greater detail in the figures) for detecting switching states of the switches 22, 24 and triggering an alarm as a function of the detected switching states.

The first and second switches 22, 24 and the control device are attached to a deflection element 32 which, in the exemplary embodiment shown, is designed in the form of a bending beam 32 which can be deflected on one side. The bending beam 32 is clamped on one side by means of connecting means 30 and can be deflected against the spring force of the spring element 28 assigned to the second actuating element 20.

The first switch 22 and the second switch 24 are arranged on the bending bar 32 on opposite sides of the bending bar 32, the respective buttons of the first and second switches 22, 24 each pointing outward from the bending bar 32. In the attached state of the alarm transmitter 10, the first switch 22 also points away from the lock box 12, whereas the second switch 24 is oriented in the direction of the lock box 12.

The mode of operation of the alarm transmitter 10 is explained below. In the unlocked state of the door locking system, i.e. when the locking bolt is in its unlocked position, the alarm transmitter 10 can be attached to the lock box 12. Here, the lock box 12 presses against the second switch 24, whereby the latter is actuated and assumes a first switch position. As already mentioned above, the spring elements 28 assigned to the first actuating element 18 cause the actuating section 29 of the first actuating element 18 to actuate the first switch 22 in the unlocked state of the door locking system, whereby the latter also assumes a first switch position. If the first and second switches 22, 24 are actuated, they together define a first switching state.

If the locking bolt is introduced into the bolt receptacle 14, it runs onto the inclined run-up surface 26 of the first actuating element 18 and moves the actuating element 18 out of the bolt receptacle 14 against the spring force of the spring elements 28. The first switch 22 is released, ie brought into a second switch position. At the same time, the second switch 24 remains in the first switch position, ie it is actuated. Define in this state the first and second switches 22, 24 have a second switching state in which the first switch 22 is released and the second switch 24 is actuated and the alarm transmitter is armed.

When an attempt is made to pry open the door, the locking bolt is moved away from the door frame or the reveal in a direction transverse to its longitudinal extension (in Figs. 1 and 2 up). The locking bolt received in the bolt receptacle 14 of the lock box 12 moves in the direction of the second actuating element 20, whereby the latter deflects the bending beam 32 against the spring force of the spring element 28 assigned to the second actuating element 20. As a result, the second switch 24 is also released, ie brought into a second switch position. If both the first and the second switch 22, 24 are released, they jointly define a third switching state which causes the control device to trigger an alarm. In the exemplary embodiment shown, the alarm is output in the form of an acoustic signal by means of a tone generator 34.

An attempt to pry open the door can be detected particularly reliably if a distance between the locking bolt received in the bolt receptacle 14 and an inner side 36 of the lock box 12 facing the locking bolt, on which the first and second actuating elements 18, 20 protrude into the bolt receptacle 14, is at least 0.8 mm, preferably at least 1.0 mm and particularly preferably at least 1.5 mm.

To change a power supply unit 38, the alarm transmitter 10 can be removed from the lock box 12 in the unlocked state of the door locking system. Since the locking bolt does not press against the first actuating element 18 in the unlocked state, the spring force of the spring elements 28 assigned to the first actuating element 18 causes the first switch 22 to assume its actuated state (first switch position). On the other hand, the Actuation of the second switch 24 when the alarm transmitter 10 is removed is canceled, ie it assumes its second switch position. Ultimately, the first and second switches 22, 24 then define a fourth switching state in which the power supply unit 38 can be changed without an alarm being triggered.

List of reference symbols

10

Alarm giver

12th

Lock box

14th

Bolt mount

16

drilling

18th

first actuator

20th

second actuator

22nd

first switch

24

second switch

26th

Ramp surface

28

Spring element

29

Operating section

30th

Lanyard

32

Deflection element

34

Sounder

36

inside

38

Power supply unit

Claims (12)

1. An alarm transmitter (10), in particular a retrofittable alarm transmitter (10), for a door locking system comprising a locking bolt, which is movable in the direction of its longitudinal extent between an unlocked position and a locked position, and a lock casing (12) which receives the locking bolt in its locked position, said alarm transmitter (10) comprising:

   a first actuation element (18) for actuating a first switch (22) which serves to detect a locked state of the locking bolt;

   a second actuation element (20) for actuating a second switch (24) which serves to detect a movement of the locking bolt in a direction transverse, in particular at least approximately perpendicular, to its longitudinal extent; and

   a control device for detecting switching states of the switches (22, 24) and for triggering an alarm in dependence on the detected switching states,

   characterized in that
   the alarm transmitter (10) is configured for a plugging onto the lock casing (12), with, in a plugged-on state of the alarm transmitter (10), the first actuation element (18) and the second actuation element (20) projecting into a bolt receiver (14) of the lock casing (12) which serves to receive the locking bolt.
2. An alarm transmitter (10) in accordance with claim 1,
   characterized in that
   the first actuation element (18) projects further into the bolt receiver (14) of the lock casing (12) than the second actuation element (20).
3. An alarm transmitter (10) in accordance with at least one of the claims 1 or 2,
   characterized in that
   the first actuation element (18) has a slanted run-on surface (26) for the locking bolt which can be introduced into the bolt receiver (14) of the lock casing (12).
4. An alarm transmitter (10) in accordance with at least one of the preceding claims,
   characterized in that
   the first actuation element (18) and/or the second actuation element (20) is/are each displaceable out of the bolt receiver (14) against a spring force of a spring element (28).
5. An alarm transmitter (10) in accordance with at least one of the preceding claims,
   characterized in that
   the first switch (22) and/or the second switch (24) is/are attached to a deflection element (32), in particular to a bending beam (32) clamped at one side.
6. A door locking system comprising a locking bolt displaceable in the direction of its longitudinal extent between an unlocked position and a locked position; a lock casing (12) receiving the locking bolt in a locked state; and an alarm transmitter (10) in accordance with at least one of the preceding claims plugged onto the lock casing (12).
7. A door locking system in accordance with claim 6,
   characterized in that
   the first switch (22) and the second switch (24) define a first switching state in the plugged-on state of the alarm transmitter (10) and when the locking bolt is in the unlocked position.
8. A door locking system in accordance with claim 6 or claim 7,
   characterized in that
   the first switch (22) and the second switch (24) define a second switching state in the plugged-on state of the alarm transmitter (10) and when the locking bolt is in the locked position.
9. A door locking system in accordance with at least one of the claims 6 to 8,
   characterized in that
   a movement of the locking bolt which is in the locked position transversely to its longitudinal extent toward the alarm transmitter (10) brings about a third switching state of the first and second switches (22, 24).
10. A door locking system in accordance with claim 9,
    characterized in that
    the control device triggers an alarm when the first and second switches (22, 24) are in the third switching state.
11. A door locking system in accordance with at least one of the claims 6 to 10,
    characterized in that
    the first and second switches (22, 24) define a fourth switching state when the alarm transmitter (10) is removed from the lock casing (12).
12. A door locking system in accordance with at least one of the claims 6 to 11,
    characterized in that
    a spacing between the locking bolt received in the lock casing (12) and an inner side (36) of the lock casing (12), which faces the locking bolt and at which first and second actuation elements (18, 20) project into a bolt receiver (14) of the lock casing (12), amounts to at least 0.8 mm, preferably at least 1.0 mm, and particularly preferably at least 1.5 mm.

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