EP0133923B1 - Alarmvorrichtung für Türen oder Fenster - Google Patents

Alarmvorrichtung für Türen oder Fenster Download PDF

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Publication number
EP0133923B1
EP0133923B1 EP84107829A EP84107829A EP0133923B1 EP 0133923 B1 EP0133923 B1 EP 0133923B1 EP 84107829 A EP84107829 A EP 84107829A EP 84107829 A EP84107829 A EP 84107829A EP 0133923 B1 EP0133923 B1 EP 0133923B1
Authority
EP
European Patent Office
Prior art keywords
door
contact
window
alarm device
screws
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84107829A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0133923A1 (de
Inventor
Winfred Klink
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT84107829T priority Critical patent/ATE26625T1/de
Publication of EP0133923A1 publication Critical patent/EP0133923A1/de
Application granted granted Critical
Publication of EP0133923B1 publication Critical patent/EP0133923B1/de
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/08—Mechanical actuation by opening, e.g. of door, of window, of drawer, of shutter, of curtain, of blind

Definitions

  • the invention relates to an alarm device according to the preamble of claim 1.
  • Such an alarm device is known from GB-A-1 445 705.
  • a microswitch is provided in the cavity behind the striking plate of a door lock, which is connected to a circuit together with another destructible electrical conductor.
  • the microswitch is actuated by the door latch when the door is shut off, so that this circuit is closed.
  • a resilient tongue arranged outside the microswitch is pushed through the bolt onto a spring pressure bolt of the microswitch.
  • the resilient tongue protrudes into the opening into which the bolt is pushed when the door is locked.
  • essential functional elements which are required to actuate the microswitch, are exposed and thus, for. B. by foaming, can be disabled.
  • the microswitch also takes up a relatively large amount of space.
  • the contact switch has a current-conducting switch housing housed in a metal housing provided with a screw-on plate.
  • a switching plunger made of non-conductive material, in particular plastic, is slidably mounted.
  • the switching plunger carries a current-conducting contact plate at its end opposite the striking plate side surface, which closes the current contact to the signaling device when the striking plate is lifted or bent off the frame wood.
  • the contact switch which consists of a relatively large number of individual components, is of relatively complex construction. The distance between the contacts must be quite large, otherwise there is a risk that an alarm signal will be triggered even with relatively low vibrations.
  • the known device should only respond when the window or door is opened by force.
  • the object of the invention is therefore to provide an alarm device of the type mentioned, which has an extremely simple and space-saving structure and whose essential parts are protected against inoperative networks.
  • the installation of the contact switch in the door or window frame is extremely simple and can also be done by a handyman.
  • the installation can be adjusted to any window or door.
  • the base plate, on which the two fixed contacts and the spring contact are provided can be attached in a height-adjustable manner relative to the bottom of the depression in which the contact switch is arranged. This can be done, for example, with the help of screws rotatable in the base plate, e.g. B. mirror screws happen, the underlying thread are designed in the manner of wood screw threads and can be screwed into the material of the door or window frame.
  • Material changes for example the "working of the wood of the door or window frame that occurs over time, can also be compensated for in this way. It is achieved in this way that the base plate can be arranged as close as possible to the cover plate, which can be designed as a striking plate.
  • the contact switch can be arranged as a latch lock or as a latch lock in the latch or latch opening of the door or window frame. It is of course also possible to provide the recess in which the contact switch is arranged at another point on the door or window frame.
  • the spring contact is actuated by the latch or bolt or by a striking plate or an actuating element provided on the window or door leaf, so that the circuit is connected. As long as the circuit is switched on, the switched-on signal device is not actuated. However, if the circuit is opened by removing the spring contact from one of the two fixed contacts, the switched-on signaling device is activated.
  • the signal device can be designed in a known manner and can, for example, deliver an acoustic or optical signal.
  • the circuit is interrupted whenever the actuator by which the spring contact is brought into such a position that it connects the two fixed contacts to one another is removed from the spring contact. If the signaling device is switched on, the latter is then activated.
  • the alarm device is insensitive to vibrations, which are generated, for example, by passing heavy vehicles or strong gusts of wind. Furthermore, the system responds not only when the door or window is opened by force, but also when it is opened carefully, which is not desired.
  • the contact arrangement is designed so that the freely movable end of the leaf spring is movable between two fixed contacts for contacting them, it is possible to close two different circuits.
  • One circuit can then be used for the alarm device and the other circuit can be used for other purposes. In this way, one obtains, without requiring additional space, a variety of possible uses for the alarm device, for example for monitoring the frequency of the door movements or closing and opening operations on the door for statistical purposes or security purposes or the triggering of automatic monitoring systems by the additional circuit and the like.
  • a suitable carrier for this can be a plastic block which has a cavity in which the contacts are arranged accordingly.
  • a projection made of electrically non-conductive material which protrudes through an opening in the plastic block and which is displaced when the door or window is closed and opened.
  • the plastic block can be guided by means of screws on a holding frame, through which a displacement of the plastic block and thus the distance of the leaf spring relative to the actuating element, which acts on the latter when it is closed and opened, is achieved. In this way it can be achieved that the movable end of the leaf spring rests with security when the door or window is closed against the corresponding fixed contact for closing the closed circuit.
  • a contact switch 3 is installed in a recess 9 of a door or window frame 7.
  • the contact switch has a base plate 8 made of a non-conductive or insulating material as a support for the two fixed contacts 1 and 2.
  • the two contacts 2 and 2 are passed through the base plate 8 and connected to connecting lines 15 and 16 on the rear side of the base plate. which lead to an actuating device 6 for a signal device 5 connected to the actuating device 6.
  • a spring contact 4 designed as a leaf spring is electrically conductively and firmly connected.
  • the other end of the spring contact 4 is freely movable and can be brought into conductive connection or contact with the other fixed contact 2.
  • an actuator 12 which can be designed as a bolt or latch of the closing device of the door or window.
  • the actuator can also be a projection provided on the window or door frame, which presses the spring contact 4 with its free end against the fixed contact 2 when the door or window is closed.
  • a cover plate 10 can be provided which has an elongated opening 11 through which the actuating member 12 can be brought into effect on the spring contact 4.
  • the spring contact 4 When the spring contact 4 is lifted off the fixed contact 2 at one end, as shown in FIG. 2, the spring contact 4 projects into the opening 11 of the cover plate 10.
  • the cover plate 10 is attached to the door by means of screws 17 and 18 or window frame 7 attached. The surface of the cover plate 10 is flush with the surface of the door or window frame 7 surrounding it.
  • the base plate 8 can be adjusted relative to the bottom 19 of the recess 9. This is done with the aid of screws 20 and 21, the thread of which is inserted in sleeves 22 and 23, which are anchored in the material of the door or window frame, for example screwed in.
  • the sleeves 22 and 23 have internal threads into which the thread of the screws 20 and 21 is screwed.
  • This height adjustment ensures that the spring contact 14 is always in the correct position, so that it is pressed into the closed position of the window or door by the actuator 12 with its free end on the fixed contact 2 or is brought into conductive connection .
  • the closed circuit is interrupted, whereby the switched-on signal device 5 is put into operation. An acoustic or optical signal can then be emitted by the signal device 5.
  • the actuating device 6 can be designed as a relay that actuates a switch that is open as long as the closed circuit is closed. When the closed circuit is interrupted, this switch is closed, as a result of which the signaling device 5 is activated.
  • the actuating device 6 it is also possible to design the actuating device 6 as an electronic component, for example as a logic circuit (AND circuit, AND / OR circuit, etc.).
  • the spring contact 4 preferably has an insulating layer 13, for example made of plastic, at the point at which it comes into contact with the actuating member 12.
  • This insulating layer is advantageous if the actuator 12 consists of an electrically conductive material.
  • the conductive part of the spring contact 4 is then electrically insulated from the actuator 12 by the isoller layer 13.
  • the ball 14 is made of non-conductive material. In this way, possible changes in resistance and capacity of the alarm system are avoided, in particular when highly sensitive electronic control devices are used for the actuating device 6 and the signal device 5.
  • the screw is rotatably mounted with its head part 25 in the base plate 8, so that a height adjustment of the base plate 8 relative to the bottom 19 of the recess in which the contact switch 3 is mounted is achieved.
  • the carrier for the contacts is designed as a plastic block 27 which has a cavity 28, on the walls of which the contacts 1, 2 and a contact 26 are present.
  • the contacts 1 and 2 correspond to the contacts 1 and 2 in the previous embodiments, i. H. the contacts 1 and 2 are connected to the circuit 6, 15, 16 shown in FIG. 1, for example, while the contacts 1 and 26 are connected to an additional circuit through which, for example, a counting device, a monitoring device or a triggering device for a monitoring device or an additional alarm circuit, which ensures an additional alarm triggering and the like. More can be connected.
  • the free end of the leaf spring 4 has a projection 29 which projects through an opening 44 in the plastic block 27.
  • the projection 29 projects beyond the front of the plastic block 27 by a small amount, which corresponds at least to the distance between the two contacts 2 and 26.
  • the leaf spring 4 is practically completely covered to the outside, specifically by the front block side 45.
  • Unnoticed opening of the door or window is not possible because the projection 29 together with the free end of the leaf spring 4 under the spring action of the opening movement of the actuator 12 in the open, non-foamed space in which the actuator 12 was previously has, would follow. This means that the breakdown of the essential components of the contact switch is avoided.
  • the leaf spring 4 rests with its front surface in an electrically conductive connection on the fixed contact 26 which is on the front wall of the cavity 28 in the immediate vicinity above the through hole 44 for the Projection 29 is arranged.
  • the front ends with which the screws 30 and 31 are inserted into the screw sleeves 35 and 36 are conical in order to make assembly easier.
  • the screws 30 and 31 are, as can be seen from FIG. 7 for the upper screw, their thickened rear ends (in FIG. 7 hemispherical end 46) in slots 37, 38 in the rear wall of the holding frame 32 by means of anchored in the screw in front of the reinforced end circumferential groove 49. It is also possible to support the back of the thickened end of the screw against a stop surface which is formed, for example, by a U-shaped part.
  • the screws 30 and 31 without tilting into the cast-in screw sleeves 35 and 36 with the aid of a suitable tool inserted between the plastic block 27 and the side walls of the holding frame 32 with the preferably conical ends of the screws 30 and 31 .
  • a suitable tool inserted between the plastic block 27 and the side walls of the holding frame 32 with the preferably conical ends of the screws 30 and 31 .
  • the thickened ends of the screws 30 and 31 lie, as can be seen from FIG. 7, on the rear outside of the rear wall of the holding frame 32 and form an abutment during the assembly of the plastic block 27.
  • the plastic block 27 sits on the Bottom part 47 of the holding frame 32.
  • the holding frame 32 is preferably made of sheet metal, and the shaping is achieved by stamping and folding.
  • suitable spacers can be provided on the outside of the rear wall of the holding frame 32 or the distance can be set similar to that in FIGS Figures 2 to 4 is shown with the aid of screws 20, 21, which are inserted in the material of the ster- or door frame anchored sleeves 22, 23, wherein the screws 20, 21 can be designed as M-threaded screws.
  • the screws 30, 31, as shown for the case of the screw 30 in Fig. 7, near it Thickened ends have a square screw part 39.
  • This screw part 39 can also be polygonal.
  • the lateral surfaces of this screw part 39 are alternately electrically conductive and electrically insulating.
  • An electrically conductive leaf spring 40 bears against this polygonal screw part 39, which is fastened to the rear wall of the holding frame 32 with the aid of a non-conductive holder 48.
  • the leaf springs 40 and the polygonal screw part 39 are connected in sabotage circuits, not shown, through which an alarm can be triggered if the screws 30 and 31 are inadvertently turned.
  • This alarm is triggered if, when the screws 30 and 31 are turned, there is a change from one side face to the next following side face, i. H. when the leaf springs 40 abut against a conductive surface when the screws are turned against an electrically non-conductive surface, as a result of which the current in the sabotage circuits is then interrupted and an activated alarm device is activated.
  • a current is switched into the corresponding circuit, which in turn then sets an alarm device into operation.
  • FIG. 6 there is a conductive film 42 in a side wall 41 of the holding frame 32, which is connected to a further electrical sabotage circuit, not shown in detail.
  • This conductive film 42 is insulated from the sheet metal of the holding frame 42, which forms the neutral conductor.
  • it is also possible to isolate several of them Provided conductive foils 42 in the side wall 41 of the holding frame 32, which are connected in a circuit, not shown. If the holding frame is drilled laterally with the aid of a metal tool, for example a drill, the conductive foils 42 are short-circuited to one another or to the sheet metal holding frame, so that an alarm device can be triggered. In this respect, a lateral protection of the contact switch against lateral drilling and e.g. subsequent foaming is achieved.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Push-Button Switches (AREA)
EP84107829A 1983-07-05 1984-07-05 Alarmvorrichtung für Türen oder Fenster Expired EP0133923B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84107829T ATE26625T1 (de) 1983-07-05 1984-07-05 Alarmvorrichtung fuer tueren oder fenster.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3324189 1983-07-05
DE19833324189 DE3324189A1 (de) 1983-07-05 1983-07-05 Alarmvorrichtung fuer tueren oder fenster

Publications (2)

Publication Number Publication Date
EP0133923A1 EP0133923A1 (de) 1985-03-13
EP0133923B1 true EP0133923B1 (de) 1987-04-15

Family

ID=6203191

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84107829A Expired EP0133923B1 (de) 1983-07-05 1984-07-05 Alarmvorrichtung für Türen oder Fenster

Country Status (3)

Country Link
EP (1) EP0133923B1 (enrdf_load_stackoverflow)
AT (1) ATE26625T1 (enrdf_load_stackoverflow)
DE (2) DE3324189A1 (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8603049D0 (en) * 1986-02-07 1986-03-12 Murdoch J W Security system
DE202013006372U1 (de) 2013-07-16 2013-08-05 Kfv Karl Fliether Gmbh & Co. Kg Überwachungseinrichtung
DE202024105845U1 (de) 2024-10-11 2024-11-26 Kfv Karl Fliether Gmbh & Co. Kg Überwachungseinrichtung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE416658C (de) * 1923-05-05 1925-07-21 Franz Theobald Elektrische Alarmvorrichtung
DE1061660B (de) * 1957-05-31 1959-07-16 Siemens Ag Elektrische Sicherungsanordnung
DE1283124B (de) * 1967-01-24 1968-11-14 Herbert Szigat Wuppertaler Sch Alarmvorrichtung fuer Tueren oder Fenster
JPS5247669Y2 (enrdf_load_stackoverflow) * 1972-08-31 1977-10-28
US4225857A (en) * 1978-09-05 1980-09-30 Frank Karl F Spring loop door and window alarm switch
US4283718A (en) * 1979-07-02 1981-08-11 Synco National Ltd. Door alarm device

Also Published As

Publication number Publication date
DE3324189A1 (de) 1985-01-24
EP0133923A1 (de) 1985-03-13
DE3324189C2 (enrdf_load_stackoverflow) 1987-07-02
DE3463191D1 (en) 1987-05-21
ATE26625T1 (de) 1987-05-15

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