EP0297940A2 - Glazing alarm - Google Patents

Glazing alarm Download PDF

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Publication number
EP0297940A2
EP0297940A2 EP88401445A EP88401445A EP0297940A2 EP 0297940 A2 EP0297940 A2 EP 0297940A2 EP 88401445 A EP88401445 A EP 88401445A EP 88401445 A EP88401445 A EP 88401445A EP 0297940 A2 EP0297940 A2 EP 0297940A2
Authority
EP
European Patent Office
Prior art keywords
glass
alarm
glass plate
glazing according
spring
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.)
Granted
Application number
EP88401445A
Other languages
German (de)
French (fr)
Other versions
EP0297940A3 (en
EP0297940B1 (en
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 SA
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 SA, Saint Gobain Vitrage International SA filed Critical Vegla Vereinigte Glaswerke GmbH
Publication of EP0297940A2 publication Critical patent/EP0297940A2/en
Publication of EP0297940A3 publication Critical patent/EP0297940A3/en
Application granted granted Critical
Publication of EP0297940B1 publication Critical patent/EP0297940B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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.
  • a device which provides the control pulse comprising a mechanical support linked to the glass sheet and a spring element which elastically deforms. This rests on one side against the support and on the other against the glass sheet. When the breakage of the glass sheet occurs one of the two stops disappears and the deformation of the spring acts by causing the establishment or rupture of a contact producing the control pulse.
  • 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 rod pusher 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 adhesive 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.

Abstract

A glazing alarm consists of a pane of toughened glass (28) and a device which when the glass pane (28) is broken sends an electrical pulse. The device that sends the electrical pulse comprises a physical support (a housing 26) joined to the glass pane (28) and a spring under elastic deformation (a helical spring 39). When compressed, one end of the spring (39) bears against the end (31) of the housing (26) and the other end through an intermediate pusher (37) against the surface of the pane of glass (28). When the pane of glass (28) is broken, the spring (39) expands owing to the disappearance of the fragments of glass. The physical contact between the contacts (34, 37) is consequently interrupted, triggering the signal setting off the alarm. <IMAGE>

Description

L'invention concerne un vitrage alarme constitué de verre de silicate trempé et d'un dispositif fournissant un signal électrique, le dispositif entrant en action lors de la casse de la feuille de verre.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.

Dans un vitrage alarme connu du même type, le dispositif four­nissant le signal électrique est constitué d'une bande conductrice fai­te d'un émail conducteur de l'électricité qui est fragile, cet émail a été cuit sur la surface du verre (brevets allemands n° 12 78 292, n° 24 04 278, n° 24 14 111). Lorsque la feuille de verre trempé casse, elle explose sur toute sa surface en petits fragments. Les lignes de fractu­re du verre se prolongent également au sein de la couche d'émail conducteur. Lorsque les fragments de verre se séparent dans la région de la bande conductrice, celle-ci est interrompue. L'augmentation d'im­pédance qui en résulte est utilisée pour produire le signal électrique qui mettra en fonctionnement le dispositif d'alarme. La bande conduc­trice est généralement placée au voisinage du bord de la feuille de verre. Mais souvent, la feuille de verre est maintenue dans un cadre à sa périphérie et il peut arriver que dans cette zone les fragments de verre soient maintenus ensemble par le cadre. Dans ce cas, les frag­ments qui portent la bande conductrice restent au contact les uns avec les autres et empêchent l'émission du signal électrique.In a known alarm glazing of the same type, 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). When the sheet of tempered glass breaks, it explodes over its entire surface in small fragments. The glass fracture lines also extend within the conductive enamel layer. When the glass fragments separate in the region of the conductive strip, the latter is interrupted. 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. But often 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.

Dans un autre vitrage alarme du type de ceux évoqués plus haut, on utilise l'expansion bien connue produite par la casse d'une feuille de verre trempée pour fermer un contact électrique placé à l'extérieur de la feuille de verre (brevet US 2 209 527). Dans ce cas, on a placé à l'intérieur du cadre qui porte la feuille de verre les contacts d'un interrupteur mécanique qui sera fermé lors de la casse de la feuille de verre. Ce principe suppose cependant que les fragments de la feuille de verre restent liés les uns aux autres. Mais alors,lorsque par exemple on produit la casse d'un vitrage automobile en provoquant une large ouverture au milieu de sa surface, un ensemble de fragments peut s'expanser librement du côté de l'ouverture et dans ce cas le bord de la feuille de verre ne change pas de place et ne permet donc pas la fermeture mécanique du contact électrique. Un inconvénient supplémen­taire de ce système réside dans le fait qu'il suppose un montage fixe de la feuille de verre dans un cadre et qu'il n'est par conséquent pas utilisable pour des vitrages non encadrés ou dans le cas de vitrages automobiles latéraux mobiles.In another alarm glazing of the type mentioned above, use is made of the well-known expansion produced by the breakage of a toughened glass sheet to close an electrical contact placed outside the glass sheet (US patent 2 209,527). In this case, the contacts of a mechanical switch are placed inside the frame which carries the glass sheet, which will be closed when the glass sheet is broken. This principle assumes, however, that the fragments of the glass sheet remain linked to each other. But then, when for example we break a car window by causing a large opening in the middle of its surface, a set of fragments can freely expand on the side of the opening and in this case the edge of the glass sheet does not change place and therefore does not allow the mechanical closing of the contact electric. An additional drawback of this system lies in the fact that it supposes a fixed mounting of the glass sheet in a frame and that it is therefore not usable for unframed glazing or in the case of movable side automotive glazing. .

L'invention a pour fonction de réaliser un vitrage alarme fait de verre trempé qui lors de la casse de la feuille de verre four­nisse à coup sur un signal électrique.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.

Cette fonction est remplie par l'utilisation selon l'invention d'un dispositif qui fournit l'impulsion de commande comprenant un sup­port mécanique lié à la feuille de verre et un élément de ressort qui se déforme élastiquement. Celui-ci s'appuie d'un côté contre le support et de l'autre contre la feuille de verre. Lorsque la casse de la feuil­le de verre se produit l'une des deux butées disparaît et la déforma­tion du ressort agit en provoquant l'établissement ou la rupture d'un contact produisant l'impulsion de commande.This function is fulfilled by the use according to the invention of a device which provides the control pulse comprising a mechanical support linked to the glass sheet and a spring element which elastically deforms. This rests on one side against the support and on the other against the glass sheet. When the breakage of the glass sheet occurs one of the two stops disappears and the deformation of the spring acts by causing the establishment or rupture of a contact producing the control pulse.

Le principe de base de l'invention peut être mis en oeuvre et développé de différentes manières comme on le voit dans les descrip­tions et les revendications qui suivent, celles-ci ne présentent que quelques uns des exemples de réalisation possibles.The basic principle of the invention can be implemented and developed in different ways as can be seen in the descriptions and the claims which follow, these only present some of the possible embodiments.

L'invention sera expliquée plus clairement à l'aide des des­sins suivants :

  • - figure 1 : elle représente un vitrage comportant au bord de la feuille de verre un micro-contact qui fournit un signal (vue de face partielle).
  • - figure 2 : c'est une vue du vitrage alarme de la figure 1 présentée selon la ligne II-II.
  • - figure 3 : présente la même vue extraite de la figure 1 se­lon la ligne II-II mais ici, après rupture du verre.
  • - figure 4 : vitrage latéral d'automobile commandé par mani­velle avec un contacteur intégré dans le profilé de manoeuvre (vue par­tielle de face).
  • - figure 5 : vitrage équipé d'un contacteur collé sur la surface du vitrage.
  • - figure 6 : vitrage avec, comme sur la figure 5, un contac­teur, mais en deux parties.
  • - figure 7 : un vitrage avec une pellicule conductrice dépo­sée sur la surface et un poussoir qui chasse les fragments de verre porteurs de la pellicule conductrice.
  • - figure 8 : c'est une coupe de la figure 7 selon la ligne VIII-VIII.
The invention will be explained more clearly using the following drawings:
  • - Figure 1 : it represents a glazing comprising at the edge of the glass sheet a micro-contact which provides a signal (partial front view).
  • - Figure 2 : this is a view of the alarm glazing in Figure 1 presented along line II-II.
  • - Figure 3 : shows the same view extracted from Figure 1 along line II-II but here, after breaking the glass.
  • - Figure 4 : side window of automobile controlled by crank with a contactor integrated in the operating profile (partial front view).
  • - Figure 5 : glazing fitted with a contactor bonded to the glazing surface.
  • - Figure 6 : glazing with, as in Figure 5, a contactor, but in two parts.
  • - Figure 7 : a glazing with a conductive film deposited on the surface and a pusher which drives out the glass fragments carrying the conductive film.
  • - Figure 8 : it is a section of Figure 7 along the line VIII-VIII.

Le vitrage alarme 1 représenté partiellement sur les figures 1 à 3 est équipé d'un contacteur 2 fixé au bord du vitrage. Le vitrage 1 est un vitrage sans encadrement par exemple un vitrage latéral pour automobile commandé par manivelle. Sur son bord inférieur sont fixées des pattes 3. Ces pattes 3 ont un profil 4 en forme de U et elles sont fixées à force ou collées sur le vitrage. Les pattes se terminent par un plat 5 équipé d'un trou 6. Celui-ci servira à la fixation du système de manoeuvre de la glace latérale non représenté. Lorsque la glace est fermée son bord inférieur A se trouve en-dessous de la baie dont le bord inférieur est figuré par la ligne B-B. On obtient ainsi que le système de manoeuvre de la glace latérale se trouve en permanence à l'intérieur de la portière et reste ainsi invisible.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. 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.

Le contacteur 2 comprend une section de profilé 8 en forme de U qui est par exemple fixée solidement au vitrage 1 par l'intermédiaire d'une couche de colle 9. Sur l'aile 10 du profilé 8 on a fixé un res­sort à lame 12 par exemple à l'aide d'un rivet 13. Dans l'état détendu le ressort à lame 12 a la forme représentée figure 3, c'est d'abord celle de la patte de fixation 14 par l'intermédiaire de laquelle le ressort est fixé sur l'aile 10 du profilé 8. Elle se continue par le bras de levier 15 suivi de la section 16 sur laquelle est fixé un micro-interrupteur 17. Dans sa position normale le ressort à lame 12 est bandé et alors le bras de levier 15 est en appui sur la surface du vi­trage 1. Le ressort à lame 12 prend dans ce cas la forme représentée figure 2.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. On the wing 10 of the profile 8 a leaf spring 12 has been fixed. for example using a rivet 13. 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.

Dans la position bandée du ressort à lame la touche 18 du micro-interrupteur 17 s'appuie sur la surface de l'aile 10 du profilé 8. Elle atteint ainsi sa position limite. De la sorte les conducteurs électriques 19 et 20 sont reliés l'un à l'autre grâce au micro-­interrupteur 17.In the banded position of the leaf spring the key 18 of the microswitch 17 is supported on the surface of the wing 10 of the profile 8. It thus reaches its limit position. In this way the electrical conductors 19 and 20 are connected to each other by means of the microswitch 17.

Lorsque la feuille de verre 1 casse, l'appui pour le levier 15 disparaît. Le ressort 12 se détend immédiatement et reprend la forme présentée sur la figure 3. Il s'ensuit que le micro-interrupteur 17 s'écarte du profilé 8, la touche 18 est actionnée et repoussée vers l'extérieur par un ressort placé dans le micro-interrupteur 17, et les contacts de 17 reliés aux conducteurs 19 et 20 s'ouvrent. Cela entraîne la production du signal électrique de commande qui enclenche l'alarme.When the glass sheet 1 breaks, the support for the lever 15 disappears. The spring 12 immediately relaxes and resumes the shape presented in FIG. 3. It follows that the microswitch 17 departs from the profile 8, the key 18 is actuated and pushed outwards by a spring placed in the microswitch 17, and the contacts of 17 connected to conductors 19 and 20 open. This results in the production of the electrical control signal which sets off the alarm.

Il pourrait être opportun d'installer le contacteur sur une pièce de quincaillerie existante et destinée à d'autres fonctions. C'est ainsi par exemple que dans le cas d'une glace latérale d'auto­mobile commandée par une manivelle et qui possède un profilé de manoeu­vre sur son bord inférieur, le système de ressort peut être placé sur le profilé lui-même.It may be advisable to install the contactor on an existing piece of hardware intended for other functions. Thus, for example, in the case of an automobile side window controlled by a crank and which has an operating profile on its lower edge, the spring system can be placed on the profile itself.

La figure 4 montre un montage de ce genre dans lequel le con­tacteur est installé sur le profilé de manoeuvre 22 d'un vitrage laté­ral 1. Le profilé 22 comprend une pièce 23 en U et un plat 24 avec un trou 6 sur lesquels s'appuie le levier de commande. Le profilé 22 est fixé par les moyens habituels au bord du vitrage 1. Le ressort à lame 12 est fixé directement sur une aile du U de la pièce 23, par exemple par l'intermédiaire d'un rivet 13. Pour le reste le contacteur possède les mêmes caractéristiques que celui des figures 1 à 3.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. For the rest the contactor has the same characteristics as that of FIGS. 1 to 3.

Les dispositifs présentés sur les figures 5 et 6 fonctionnent ici aussi selon le principe qui, lorsque le vitrage est cassé, entraîne la détente d'un ressort qui ouvre un contacteur mécanique déclenchant le signal électrique. Ici le support du ressort bandé est un carter 26 avec une base 27 en forme d'anneau, celle-ci est collée sur la surface du vitrage 28. Dans le cas où la région du vitrage 28 sur laquelle le carter 26 est collé se trouve à l'intérieur de la baie et est donc vi­sible, on peut avoir prévu d'équiper le vitrage dans cette zone d'une couche colorée opaque 29. Celle-ci peut être avantageusement constituée par un émail fragile. La liaison entre cet émail 29 et la base 27 en forme d'anneau du carter 26 est constituée par une couche de colle 30 adaptée.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. Here 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. In the case where 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.

Le carter 26 a la forme d'un cylindre creux équipé d'un corps 31. Le corps 31 possède en son centre un trou 32 dans lequel a été in­troduite une pièce isolante 33. A l'intérieur de la pièce isolante 33 on a placé en direction de l'intérieur du carter un plot 34 qui est re­lié au conducteur 35. Le conducteur 36 est relié électriquement au contact-poussoir 37. Le contact-poussoir 37 s'appuie par son extrémité inférieure 38 sur la surface du vitrage 28 et peut ainsi grâce à l'action du ressort hélicoïdal 39 être maintenu en contact avec le plot 34.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.

Lorsque le vitrage trempé 28 casse et est réduit en minuscu­les fragments, la pression exercée par le ressort hélicoïdal 39 chasse les fragments de verre en-dessous du carter 26 par l'intermédiaire de l'extrémité 38 de la tige-poussoir 37. Le contact électrique entre le plot 34 et le contact-poussoir 37 est alors interrompu ce qui génère le signal de commande électrique.When the toughened glazing 28 breaks and is reduced to tiny fragments, 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 .

Le dispositif représenté sur la figure 6 se présente globale­ment de manière analogue à celui de la figure 5. La différence réside dans le fait que le dispositif est en deux parties : d'une part une ba­se 40 en forme d'anneau et d'autre part le carter 41 relié à celle-ci par un filetage 42. Dans cette forme de réalisation on commence par fixer la base 40 en forme d'anneau à l'aide d'une couche de colle 43 sur la surface du vitrage 28 ou sur la couche d'émail 29. Après prise de la colle 43 et réalisation d'un collage suffisamment solide, on vis­se le carter 41 sur le pied 40 tout en bandant le ressort hélicoïdal 39.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. In this embodiment, 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.

Sur les figures 7 et 8 on a représenté un vitrage alarme réa­lisé selon le principe de l'invention. Dans celui-ci le signal électri­que de commande est produit lorsqu'un conducteur placé sur la surface du vitrage 44 est interrompu. Ce conducteur peut être constitué d'une feuille métallique ou d'un fil fin qui seront rompus sous l'action d'une pression mécanique. On peut en particulier utiliser comme couche conductrice un émail conducteur de l'électricité et cuit à chaud par exemple à base d'argent. La bande conductrice 45 se termine à ses deux extrémités par des cosses 46 sur lesquelles sont soudés les conducteurs 47, eux-mêmes liés au circuit de déclenchement de l'alarme. Sur la couche conductrice 45 on a placé une couche d'émail opaque 48 elle-même revêtue ultérieurement d'une couche de colle 49 destinée à fixer le carter 50.Figures 7 and 8 show an alarm glazing produced according to the principle of the invention. In this 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. In particular, 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. On the conductive layer 45, an opaque enamel layer 48 is placed, itself subsequently coated with a layer of adhesive 49 intended to fix the casing 50.

Le carter 50 constitue l'une des butées du ressort hélicoïdal 51 qui s'appuie sur le fond du carter 50. Le ressort hélicoïdal 51 s'appuie à son autre extrémité sur la partie inférieure 53 de la tige-­poussoir 52. La tige-poussoir 52 repose par l'intermédiaire de sa par­tie inférieure 53 sur le vitrage et grâce à l'action du ressort hélicoïdal 52 presse fortement sur ledit vitrage 44. Lorsque le vitrage 44, par suite du relachement brutal de ses contraintes éclate en petits fragments, ceux-ci sont éjectés grâce à l'action du ressort ce qui pro­voque à coup sûr l'interruption de la bande conductrice 45.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. When the glazing 44, as a result of the sudden release of its stresses bursts into small fragments, these are ejected by the action of the spring, which undoubtedly causes the conductive strip 45 to be interrupted.

Pour simplifier le processus de collage on a prévu d'équiper la tige poussoir 52 d'un trou fileté 54, on a également percé le fond du carter 50 d'un trou 55. Avant le collage la vis 56 tire la tige­ poussoir 52 vers le haut en s'opposant à la force du ressort hélicoïdal 51, de la sorte la tige 52 ne vient pas en contact avec la surface du vitrage. La tige-poussoir 52 n'exerce aucune force sur la surface du verre et la colle 49 peut ainsi durcir sans difficulté. Après prise to­tale de la colle 49 la vis 56 est déserrée ce qui met le dispositif d'alarme en état de fonctionner.To simplify the bonding process, provision has been made to equip the push rod 52 with a threaded hole 54, the bottom of the casing 50 has also been drilled with a hole 55. Before bonding, the screw 56 pulls the rod pusher 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 adhesive 49 can thus harden without difficulty. After complete setting of the glue 49 the screw 56 is loosened which puts the alarm device in working order.

Les dispositifs présentés sur les figures 5 à 8 qui permet­tent de mettre le ressort en tension, sont à chaque fois collés sur la surface du verre par leur carter ou par leur base sur toute leur surface. La grande surface de ce collage peut éventuellement entraîner la tenue mécanique des fragments de verre après la casse du vitrage trempé. C'est pourquoi il peut être avantageux de prévoir un collage du carter sur la surface du vitrage limité à des zones restreintes, éven­tuellement même d'un seul côté.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.

Les variantes de dispositifs présentés ici utilisent comme ressort exclusivement des ressorts métalliques. Il est néanmoins possi­ble d'utiliser pour remplir la même fonction des gaz comprimés enfermés de manière ad hoc. On peut par exemple utiliser des capsules étanches remplies d'un gaz sous pression ou même des éléments de mousse plasti­que à pores fermés comprimés. Il est cependant nécessaire que de tels accessoires gardent leur étanchéïté et leur élasticité pendant suffi­samment longtemps.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. One can for example use waterproof capsules filled with a gas under pressure or even elements of compressed closed-pore plastic foam. However, it is necessary for such accessories to keep their seal and elasticity for a sufficient length of time.

Claims (12)

1. Vitrage alarme constitué d'une plaque de verre sodocalci­que trempée et d'un dispositif fournissant un signal électrique de com­mande de l'alarme qui entre en action lors de la casse du verre, caractérisé en ce que le dispositif fournissant un signal électrique de commande comprend un support mécanique lié à la plaque de verre et un élément de ressort déformable élastiquement qui s'appuie d'un côté sur le support et de l'autre sur la plaque de verre et dont la modification de forme lorsqu'un des appuis disparaît par suite de la casse de la plaque de verre agit en établissant ou en interrompant un contact élec­trique ce qui fournit le signal de commande.1. Alarm glazing consisting of a plate of tempered soda-lime glass and of a device providing an electrical signal for controlling the alarm which comes into action when the glass is broken, characterized in that the device providing an electrical signal of control comprises a mechanical support linked to the glass plate and an elastically deformable spring element which is supported on one side on the support and on the other on the glass plate and whose shape modification when one of the supports disappears as a result of the breakage of the glass plate acts by establishing or interrupting an electrical contact which provides the control signal. 2. Vitrage alarme selon la revendication 1 caractérisé en ce que le support mécanique lié à la plaque de verre (1) comprend une sec­tion de profilé (8) en U positionnée dans la zone du bord de la plaque de verre (1).2. Alarm glazing according to claim 1 characterized in that the mechanical support linked to the glass plate (1) comprises a section of section (8) in U positioned in the area of the edge of the glass plate (1). 3. Vitrage alarme selon la revendication 1 ou la revendica­tion 2 caractérisé en ce que le support mécanique lié à la plaque de verre (1) est constitué par une pièce qui maintient ou supporte la pla­que de verre dans sa position.3. Alarm glazing according to claim 1 or claim 2 characterized in that the mechanical support linked to the glass plate (1) consists of a part which maintains or supports the glass plate in its position. 4. Vitrage alarme selon la revendication 3 caractérisé en ce que dans le cas d'un vitrage latéral descendant (1) pour automobile on utilise comme support pour l'élément de ressort (12) le profilé de ma­noeuvre (22) lié à la plaque de verre (1) sur son bord inférieur.4. Alarm glazing according to claim 3 characterized in that in the case of a descending side glazing (1) for automobile is used as support for the spring element (12) the operating profile (22) linked to the plate glass (1) on its lower edge. 5. Vitrage alarme selon l'une ou plusieurs des revendications 1 à 4, caractérisé en ce qu'un ressort à lame (12) est fixé au support mécanique et que ledit ressort comprend un bras (15) qui s'appuie sur la plaque de verre (1) et qui dépasse le support mécanique ainsi qu'une section (16) qui ou bien établit ou bien interrromp un contact élec­trique.5. Alarm glazing according to one or more of claims 1 to 4, characterized in that a leaf spring (12) is fixed to the mechanical support and that said spring comprises an arm (15) which rests on the plate glass (1) and which exceeds the mechanical support as well as a section (16) which either establishes or interrupts an electrical contact. 6. Vitrage alarme selon la revendication 5 caractérisé en ce que la section (16) du ressort à lame (12) commande un interrupteur (17).6. Alarm glazing according to claim 5 characterized in that the section (16) of the leaf spring (12) controls a switch (17). 7. Vitrage alarme selon la revendication 1 caractérisé en ce que le support mécanique lié à la plaque de verre est constitué d'un carter (26 ; 40, 41 ; 50) collé sur la surface de la plaque de verre (28 ; 44) à l'intérieur duquel on a placé un ressort hélicoïdal (39 ; 51) qui s'appuie d'un côté sur le corps du carter (26 ; 40, 41 ; 50) et d'un autre côté par l'intermédiaire d'une tige poussoir (37 ; 52) sur la plaque de verre (28 ; 44).7. Alarm glazing according to claim 1 characterized in that the mechanical support linked to the glass plate consists of a housing (26; 40, 41; 50) bonded to the surface of the glass plate (28; 44) inside which a helical spring (39; 51) has been placed which rests on one side on the casing body (26; 40, 41; 50) and on the other side by means of a push rod (37; 52) on the glass plate (28; 44). 8. Vitrage alarme selon la revendication 7 caractérisé en ce que à l'intérieur du carter (26) on a placé un contacteur fermé à l'aide de la tige poussoir (37) qui s'ouvre lorsque le ressort hélicoï­dal (39) se détend.8. Alarm glazing according to claim 7 characterized in that that inside the casing (26) a closed contactor has been placed using the push rod (37) which opens when the helical spring (39) relaxes. 9. Vitrage alarme selon la revendication 7 caractérisé en ce que l'on a placé sur la surface de la plaque de verre (44) sous le car­ter (50) un conducteur électrique tel que lors de la casse de la plaque de verre (44) sous l'action du poussoir (52) actionné par le ressort hélicoïdal (51) les fragments de verre portant la bande conductrice (45) sont chassés.9. Alarm glazing according to claim 7 characterized in that one placed on the surface of the glass plate (44) under the housing (50) an electrical conductor such as during the breakage of the glass plate (44 ) under the action of the pusher (52) actuated by the helical spring (51) the glass fragments carrying the conductive strip (45) are expelled. 10. Vitrage alarme selon la revendication 9 caractérisé en ce que le conducteur électrique est constitué d'une bande conductrice (45) faite d'une composition émaillée cuite à la surface de la plaque de verre.10. Alarm glazing according to claim 9 characterized in that the electrical conductor consists of a conductive strip (45) made of an enamel composition baked on the surface of the glass plate. 11. Vitrage alarme selon l'une ou plusieurs des revendications 7 à 10, caractérisé en ce que le pied (40) collé à la surface du verre et le carter proprement dit (41) sont reliés l'un à l'autre par l'inter­médiaire d'un filetage (42) qui autorise le montage ultérieur du carter (41) dans le pied (40) fixé par collage.11. Alarm glazing according to one or more of claims 7 to 10, characterized in that the base (40) glued to the surface of the glass and the housing itself (41) are connected to each other by the 'Intermediate of a thread (42) which allows the subsequent mounting of the housing (41) in the foot (40) fixed by gluing. 12. Vitrage alarme selon l'une ou plusieurs des revendications 7 à 10 caractérisé en ce que la tige poussoir (52) actionnée par le ressort hélicoïdal (51) est maintenue à l'aide d'un système de blocage, commandé de l'extérieur du carter, pendant la durée nécessaire au col­lage dans une position où elle ne touche pas la surface du verre.12. Alarm glazing according to one or more of claims 7 to 10 characterized in that the push rod (52) actuated by the helical spring (51) is maintained by means of a blocking system, controlled from the outside of the housing, for the time necessary for bonding in a position where it does not touch the surface of the glass.
EP88401445A 1987-07-03 1988-06-13 Glazing alarm Expired - Lifetime EP0297940B1 (en)

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

Family

ID=6330855

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88401445A Expired - Lifetime EP0297940B1 (en) 1987-07-03 1988-06-13 Glazing alarm

Country Status (3)

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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4423100C1 (en) * 1994-07-01 1995-07-20 Schott Glaswerke Microwave oven with safety door switch
US5629675A (en) * 1992-12-16 1997-05-13 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Vehicle intruder detection system
US5712620A (en) * 1994-09-13 1998-01-27 Rover Group Limited Glass fracture security system and a resilient sealing means for use therein
CN106355800A (en) * 2015-07-14 2017-01-25 金宙科技有限公司 Glass breakage warning apparatus and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113516836A (en) * 2021-06-28 2021-10-19 青岛广丰泰胜建设有限公司 Window body structure with glass breaking tendency automatic monitoring and remote early warning system

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Publication number Priority date Publication date Assignee Title
DE87866C (en) *
GB595704A (en) * 1945-06-01 1947-12-12 Henry Alexander May An improved theft-alarm and protection device for shop or like windows
GB2109140A (en) * 1981-11-10 1983-05-25 Leslie Ormandy Intruder probe
US4677424A (en) * 1985-01-16 1987-06-30 Gus Hollinger Window sill burglar alarm

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE87866C (en) *
GB595704A (en) * 1945-06-01 1947-12-12 Henry Alexander May An improved theft-alarm and protection device for shop or like windows
GB2109140A (en) * 1981-11-10 1983-05-25 Leslie Ormandy Intruder probe
US4677424A (en) * 1985-01-16 1987-06-30 Gus Hollinger Window sill burglar alarm

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5629675A (en) * 1992-12-16 1997-05-13 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Vehicle intruder detection system
DE4423100C1 (en) * 1994-07-01 1995-07-20 Schott Glaswerke Microwave oven with safety door switch
US5712620A (en) * 1994-09-13 1998-01-27 Rover Group Limited Glass fracture security system and a resilient sealing means for use therein
CN106355800A (en) * 2015-07-14 2017-01-25 金宙科技有限公司 Glass breakage warning apparatus and method

Also Published As

Publication number Publication date
ES2047041T3 (en) 1994-02-16
DE3884865D1 (en) 1993-11-18
EP0297940A3 (en) 1990-05-02
EP0297940B1 (en) 1993-10-13
DE3884865T2 (en) 1994-04-28

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