EP0297940B1 - Fensterscheibenalarm - Google Patents

Fensterscheibenalarm Download PDF

Info

Publication number
EP0297940B1
EP0297940B1 EP88401445A EP88401445A EP0297940B1 EP 0297940 B1 EP0297940 B1 EP 0297940B1 EP 88401445 A EP88401445 A EP 88401445A EP 88401445 A EP88401445 A EP 88401445A EP 0297940 B1 EP0297940 B1 EP 0297940B1
Authority
EP
European Patent Office
Prior art keywords
glass plate
glass
pane according
alarm
casing
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 - Lifetime
Application number
EP88401445A
Other languages
English (en)
French (fr)
Other versions
EP0297940A3 (en
EP0297940A2 (de
Inventor
Gerd Sauer
Hans Ohlenforst
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.)
Vegla Vereinigte Glaswerke GmbH
Saint Gobain Glass France SAS
Original Assignee
Vegla Vereinigte Glaswerke GmbH
Saint Gobain Vitrage International SA
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 Vegla Vereinigte Glaswerke GmbH, Saint Gobain Vitrage International SA filed Critical Vegla Vereinigte Glaswerke GmbH
Publication of EP0297940A2 publication Critical patent/EP0297940A2/de
Publication of EP0297940A3 publication Critical patent/EP0297940A3/fr
Application granted granted Critical
Publication of EP0297940B1 publication Critical patent/EP0297940B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G08B13/04—Mechanical actuation by breaking of glass

Definitions

  • the invention relates to an alarm glazing unit consisting of tempered silicate glass and of a device providing an electrical signal, the device coming into action when the glass sheet is broken.
  • the device providing the electrical signal consists of a conductive strip made of an electrically conductive enamel which is fragile, this enamel has been baked on the surface of the glass (German patents n ° 12 78 292, n ° 24 04 278, n ° 24 14 111).
  • n ° 12 78 292, n ° 24 04 278, n ° 24 14 111 German patents n ° 12 78 292, n ° 24 04 278, n ° 24 14 1101.
  • the glass fracture lines also extend within the conductive enamel layer.
  • the resulting increase in impedance is used to produce the electrical signal that will activate the alarm device.
  • the conductive strip is generally placed in the vicinity of the edge of the glass sheet.
  • the glass sheet is held in a frame at its periphery and it can happen that in this area the glass fragments are held together by the frame. In this case, the fragments which carry the conductive strip remain in contact with each other and prevent the emission of the electrical signal.
  • the invention has the function of producing an alarm glazing made of tempered glass which, when the glass sheet is broken, suddenly gives an electrical signal.
  • the alarm glazing 1 partially shown in Figures 1 to 3 is equipped with a contactor 2 fixed to the edge of the glazing.
  • the glazing 1 is a glazing without framing, for example a lateral glazing for an automobile controlled by a crank.
  • On its lower edge are fixed tabs 3. These tabs 3 have a U-shaped profile 4 and they are forcibly fixed or glued to the glazing.
  • the legs end in a plate 5 fitted with a hole 6. This will be used to fix the operating system for the side window, not shown.
  • the window When the window is closed, its lower edge A is below the opening, the lower edge of which is shown by line B-B. This ensures that the side window operating system is permanently inside the door and thus remains invisible.
  • the contactor 2 comprises a U-shaped profile section 8 which is for example fixed firmly to the glazing 1 by means of a layer of glue 9.
  • a leaf spring 12 On the wing 10 of the profile 8 a leaf spring 12 has been fixed. for example using a rivet 13.
  • the leaf spring 12 In the relaxed state the leaf spring 12 has the shape shown in Figure 3, it is first that of the mounting lug 14 through which the spring is fixed on the wing 10 of the profile 8. It is continued by the lever arm 15 followed by section 16 on which is fixed a microswitch 17. In its normal position the leaf spring 12 is bandaged and then the arm lever 15 is supported on the surface of the glazing 1.
  • the leaf spring 12 in this case takes the form shown in FIG. 2.
  • the contactor may be advisable to install the contactor on an existing piece of hardware intended for other functions.
  • the spring system can be placed on the profile itself.
  • Figure 4 shows an assembly of this kind in which the contactor is installed on the operating section 22 of a side window 1.
  • the section 22 comprises a U-shaped part 23 and a flat 24 with a hole 6 on which rests the control lever.
  • the profile 22 is fixed by the usual means to the edge of the glazing 1.
  • the leaf spring 12 is fixed directly to a wing of the U of the part 23, for example by means of a rivet 13.
  • the contactor has the same characteristics as that of FIGS. 1 to 3.
  • the devices presented in FIGS. 5 and 6 here also work according to the principle which, when the glazing is broken, causes the relaxation of a spring which opens a mechanical contactor triggering the electrical signal.
  • the support of the banded spring is a casing 26 with a base 27 in the form of a ring, the latter is glued to the surface of the glazing 28.
  • the region of the glazing 28 on which the casing 26 is glued is located inside the opening and is therefore visible, provision may be made to equip the glazing in this area with an opaque colored layer 29. This may advantageously consist of a fragile enamel.
  • the connection between this enamel 29 and the base 27 in the form of a ring of the casing 26 is formed by a suitable layer of adhesive 30.
  • the casing 26 has the shape of a hollow cylinder equipped with a body 31.
  • the body 31 has at its center a hole 32 into which an insulating part 33 has been introduced.
  • Inside the insulating part 33 the in the direction of the interior of the housing a stud 34 which is connected to the conductor 35.
  • the conductor 36 is electrically connected to the push-button contact 37.
  • the push-button contact 37 is supported by its lower end 38 on the surface of the glazing 28 and can thus, thanks to the action of the helical spring 39, be kept in contact with the stud 34.
  • the pressure exerted by the helical spring 39 drives out the glass fragments below the casing 26 via the end 38 of the push rod 37.
  • the electrical contact between the stud 34 and the push contact 37 is then interrupted, which generates the electrical control signal .
  • the device shown in Figure 6 is generally similar to that of Figure 5. The difference is that the device is in two parts: on the one hand a base 40 in the form of a ring and other share the casing 41 connected to the latter by a thread 42.
  • a base 40 in the form of a ring and other share the casing 41 connected to the latter by a thread 42.
  • one begins by fixing the base 40 in the form of a ring using a layer of glue 43 on the surface of the glazing 28 or on the enamel layer 29. After setting the glue 43 and making a sufficiently solid bonding, the casing 41 is screwed onto the foot 40 while bandaging the helical spring 39.
  • Figures 7 and 8 show an alarm glazing produced according to the principle of the invention.
  • the electrical control signal is produced when a conductor placed on the surface of the glazing 44 is interrupted.
  • This conductor can consist of a metal sheet or a fine wire which will be broken under the action of mechanical pressure.
  • an electrically conductive and hot-baked enamel for example silver-based, can be used as the conductive layer.
  • the conductive strip 45 ends at its two ends by lugs 46 on which the conductors 47 are welded, themselves linked to the alarm triggering circuit.
  • an opaque enamel layer 48 is placed, itself subsequently coated with a layer of adhesive 49 intended to fix the casing 50.
  • the casing 50 constitutes one of the stops of the helical spring 51 which is supported on the bottom of the casing 50.
  • the helical spring 51 is supported at its other end on the lower part 53 of the push rod 52.
  • the rod - pusher 52 rests via its lower part 53 on the glazing and thanks to the action of the helical spring 52 presses strongly on said glazing 44.
  • the bottom of the casing 50 has also been drilled with a hole 55.
  • the screw 56 pulls the push rod 52 upwards by opposing the force of the helical spring 51, in this way the rod 52 does not come into contact with the surface of the glazing.
  • the push rod 52 exerts no force on the surface of the glass and the glue 49 can thus harden without difficulty.
  • the screw 56 is loosened which puts the alarm device in working order.
  • the devices presented in FIGS. 5 to 8 which enable the spring to be tensioned, are each time bonded to the surface of the glass by their casing or by their base over their entire surface.
  • the large surface area of this bonding can possibly lead to the mechanical strength of the glass fragments after the breakage of the toughened glazing. This is why it may be advantageous to provide a bonding of the casing on the surface of the glazing limited to restricted areas, possibly even on one side.
  • the variants of devices presented here use metal springs exclusively as a spring. It is nevertheless possible to use compressed gases enclosed in an ad hoc manner to fulfill the same function.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Push-Button Switches (AREA)

Claims (12)

  1. Alarmglasscheibe aus vorgespanntem Silikatglas und einer einen elektrischen Steuerimpuls gebenden Einrichtung, die bei Zerstoerung der Glasscheibe aktiviert wird,
    dadurch gekennzeichnet, dass die den elektrischen Steuerimpuls gebende Einrichtung eine mit der Glasscheibe verbundene mechanische Halterung und ein elastisch verformtes Federelement umfasst, das sich einerseits gegen die Halterung und andererseits gegen die Glasscheibe abstuetzt, und dessen Formaenderung bei Wegfall eines der Widerlager im Fall der Zerstoerung der Glasscheibe die den Steuerimpuls erzeugende Kontaktgabe oder Kontaktunterbrechung bewirkt.
  2. Alarmglasscheibe nach Anspruch 1, dadurch gekennzeichnet, dass die mit der Glasscheibe (1) verbundene mechanische Halterung einen im Querschnitt U-foermigen Profilabschnitt (8) umfasst, der auf dem Randbereich der Glasscheibe (1) angeordnet ist.
  3. Alarmglasscheibe nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass als mit der Glasscheibe verbundene meachanische Halterung ein die Glasscheibe in ihrer Position haltendes oder tragendes Beschlagteil verwendet wird.
  4. Alarmglasscheibe nach Anspruch 3, dadurch gekennzeichnet, dass bei einer versenkbaren Seitenscheibe (1) fuer Kraftfahrzeuge als das Federelement (12) abstuetzende Halterung die mit dem unteren Randbereich der Glasscheibe (1) verbundene Halteschiene (22) dient.
  5. Alarmglasscheibe nach einem oder mehreren der Ansprueche 1 bis 4, dadurch gekennzeichnet, dass an der mechanischen Halterung eine Blattfeder (12) befestigt ist, die einen ueber die mechanische Halterung hinausragenden und sich gegen die Glasscheibe (1) abstuetzenden Arm (15) sowie einen den Kontakt herstellenden oder unterbrechenden Abschnitt (16) umfasst.
  6. Alarmglasscheibe nach Anspruch 5, dadurch gekennzeichnet, dass der Abschnitt (16) der Blattfeder (12) einen Mikroschalter (17) betaetigt.
  7. Alarmglasscheibe nach Anspruch 1, dadurch gekennzeichnet, dass die mit der Glasscheibe verbundene mechanische Halterung ein mit der Oberflaeche der Glasscheibe (28; 44) verklebtes Gehaeuse (26; 40, 41; 50) ist, innerhalb dessen eine sich einerseits gegen den Boden des Gehaeuses (26; 40, 41; 50) und andererseits ueber einen Druckstift (37; 52) gegen die Glasscheibe (28; 44) abstuetzende Wendelfeder (39; 51) angeordnet ist.
  8. Alarmglasscheibe nach Anspruch 7, dadurch gekennzeichnet, dass innerhalb des Gehaeuses (26) von dem Druckstift (37) ein mechanischer Kontakt geschlossen wird, der sich bei Entspannung der Wendelfeder (39) oeffnet.
  9. Alarmglasscheibe nach Anspruch 7, dadurch gekennnzeichnet, dass unterhalb des Gehaeuses (50) auf der Oberflaeche der Glasscheibe (44) ein elektrischer Leiter angeordnet ist, und dass im Falle eines Bruchs der Glasscheibe (44) unter der Wirkung des von der Wendelfeder (51) betaetigten Druckstiftes (52) die den Leitstreifen (45) tragenden Glasbruchstuecke weggedrueckt werden.
  10. Alarmglasscheibe nach Anspruch 9, dadurch gekennzeichnet, dass der elektrische Leiter aus einem in der Oberflaeche der Glasscheibe eingebrannten Leitstreifen (45) aus einer emailartigen Einbrennmasse besteht.
  11. Alarmglasscheibe nach einem oder mehreren der Ansprueche 7 bis 10, dadurch gekennzeichnet, dass der mit der Glasoberflaeche verklebte Fussteil (40) und das eigentliche Gehaeuse (41) durch eine die nachtraegliche Montage des Gehaeuses (41) in dem aufgeklebten Fussteil (40) erlaubende Schraubverbindung (42) miteinander verbunden sind.
  12. Alarmglasscheibe nach einem oder mehreren der Ansprueche 7 bis 10, dadurch gekennzeichnet, dass der von der Wendelfeder (51) betaetigte Druckstift (52) durch eine von ausserhalb des Gehaeuses betaetigbare Arretiervorrichtung (Schraube 56) waehrend des Verklebevorgangs in einer die Glasoberflaeche nicht beruehrenden Stellung gehalten wird.
EP88401445A 1987-07-03 1988-06-13 Fensterscheibenalarm Expired - Lifetime EP0297940B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3722028 1987-07-03
DE3722028 1987-07-03

Publications (3)

Publication Number Publication Date
EP0297940A2 EP0297940A2 (de) 1989-01-04
EP0297940A3 EP0297940A3 (en) 1990-05-02
EP0297940B1 true EP0297940B1 (de) 1993-10-13

Family

ID=6330855

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88401445A Expired - Lifetime EP0297940B1 (de) 1987-07-03 1988-06-13 Fensterscheibenalarm

Country Status (3)

Country Link
EP (1) EP0297940B1 (de)
DE (1) DE3884865T2 (de)
ES (1) ES2047041T3 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9226217D0 (en) * 1992-12-16 1993-02-10 Secretary Fo State For Defence Vehicle intruder detection device
DE4423100C1 (de) * 1994-07-01 1995-07-20 Schott Glaswerke Mikrowellenherd mit einer Türe mit Abschaltsicherung
GB9418402D0 (en) * 1994-09-13 1994-11-02 Rover Group A security system and detector means therefor
CN106355800A (zh) * 2015-07-14 2017-01-25 金宙科技有限公司 玻璃破碎警报装置及方法
CN113516836A (zh) * 2021-06-28 2021-10-19 青岛广丰泰胜建设有限公司 具有玻璃破碎倾向自动监测及远程预警系统的窗体结构

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE87866C (de) *
GB595704A (en) * 1945-06-01 1947-12-12 Henry Alexander May An improved theft-alarm and protection device for shop or like windows
GB2109140B (en) * 1981-11-10 1985-08-21 Leslie Ormandy Intruder probe
US4677424A (en) * 1985-01-16 1987-06-30 Gus Hollinger Window sill burglar alarm

Also Published As

Publication number Publication date
DE3884865T2 (de) 1994-04-28
ES2047041T3 (es) 1994-02-16
DE3884865D1 (de) 1993-11-18
EP0297940A3 (en) 1990-05-02
EP0297940A2 (de) 1989-01-04

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