EP0053557B1 - Circuit closing device of the "emergency breakglass point" type - Google Patents

Circuit closing device of the "emergency breakglass point" type Download PDF

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Publication number
EP0053557B1
EP0053557B1 EP81401884A EP81401884A EP0053557B1 EP 0053557 B1 EP0053557 B1 EP 0053557B1 EP 81401884 A EP81401884 A EP 81401884A EP 81401884 A EP81401884 A EP 81401884A EP 0053557 B1 EP0053557 B1 EP 0053557B1
Authority
EP
European Patent Office
Prior art keywords
plate
tripping
tripping apparatus
actuating member
cover
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
EP81401884A
Other languages
German (de)
French (fr)
Other versions
EP0053557A1 (en
Inventor
Jacques Da Rocha
Guy Hennequin
Roger Parlatore
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.)
Legrand SA
Original Assignee
Legrand 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 Legrand SA filed Critical Legrand SA
Publication of EP0053557A1 publication Critical patent/EP0053557A1/en
Application granted granted Critical
Publication of EP0053557B1 publication Critical patent/EP0053557B1/en
Expired legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/022—Emergency operating parts, e.g. for stop-switch in dangerous conditions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/022—Emergency operating parts, e.g. for stop-switch in dangerous conditions
    • H01H2003/0233—Emergency operating parts, e.g. for stop-switch in dangerous conditions for alarm triggering, e.g. fire alarm, emergency off switches operated by breaking a glass

Definitions

  • the invention relates to an engagement device of the "glass breakage" type intended to prevent inadvertent engagement of an action member.
  • Glass breakage is well known: the action organ, in this case a push button, is protected by a glass which must be broken before it can be activated.
  • an interlocking device comprising an actuating member, constituted in this case by contact blades, disposed below an elastically deformable plate reversibly between two forms stable, one corresponding to a standby position, for which the plate is curved outwards, thus leaving the actuating member in the released position, the other corresponding to a latching position, for which the plate is curved inward thereby engaging the actuating member.
  • Document CH-A-470061 also discloses an interlocking device comprising a flexible sheet holding a rigid plate domed internally, the convexity of the plate being intended to ensure the action on a pusher ball by pressure of the fingers on the flexible sheet.
  • Document US-A-3 297 853 also discloses a device of the conventional type with glass for retaining a pusher in the compressed position, broken glass compressing the pusher.
  • the subject of the present invention is an interlocking device of the “glass breaking type” avoiding these drawbacks.
  • the subject of the invention is an interlocking device of the “glass breakage” type comprising an action member and a plate placed above said action member and preventing any untimely action thereon, a portion at least of said plate being elastically deformable in a reversible manner between two stable forms, one corresponding to a waiting position, for which the plate is curved outwards, thus leaving the action member in the triggered position, the other corresponding to an engagement position, for which the plate is curved inward, thereby engaging the action member, device characterized in that there is provided in the housing a passage giving access to the underside of the plate.
  • the transition from the standby position to the alarm position is effected by a voluntary push or by a shock, for example using a hammer; on resetting, preferably, the passage from the alarm position to the standby position can be done directly, using a specialized tool; according to an embodiment which is not claimed, the rearming can also be done by disassembly and reassembly of the assembly, using a conventional tool, for example a screwdriver.
  • the latching device comprises a housing 1 serving as a housing for a push button 2.
  • a cover 3 which is in the form of a frame, closes the housing 1.
  • the cover 3 is removably attached, by screws 10, on the housing 1 and is rectangular; by two of its opposite internal edges, it forms a housing 31, which is in fact constituted by a notch made in its thickness 3.
  • a rectangular plate 4 which is made of elastic material, is forcibly engaged in this housing 31, by a part of its periphery, namely its two corresponding opposite edges; its relative dimensions, between these two opposite edges, are greater than those of the housing 31, so that it cannot take a planar shape and is on the contrary, by elasticity, reversibly deformable between two stable shapes, one corresponding to a waiting position, for which it is "convex towards the outside of the housing 1, the other corresponding to an alarm position, for which it is” convex "towards the interior thereof.
  • the plate 4 is "curved" outward from the housing; it is then at a distance from the push button 2 and the latter is in the triggered position or "waiting position".
  • the housing 31 of the frame 3 forms by itself a means of clamping the plate 4, which maintains, as described, the convex shape, either in one direction or in the other.
  • the plate 4 is also elastically deformable in a reversible manner, but its clamping means is formed by a rigid frame 43, distinct from the cover 3.
  • This embodiment makes it possible to accommodate with play l 'plate 4 and frame 43 in the housing 31 of the cover 3, the manufacturing tolerances then being less severe.
  • the rigid frame 43 thus associated with the plate 4 is integral with the latter.
  • the plate 4 in fact comprises in this case three bands: a central band 41, which, by plastic deformation, by molding, hot deformation, stamping, for example, or other known method, has been preformed so as to have a convex shape and two lateral strips 42 and 42 ', which are detached from the central strip 41, and which are not deformed and therefore flat.
  • the strip 41 assumed to be deployed flat is substantially longer than the strips 42 and 42 '.
  • Two transverse bands 44, 44 ' which form one body with the central band 41, connect the lateral bands 42, 42', forming with them the associated rigid frame 43.
  • the plate 4 is circular in shape and is generally preformed into the shape of a spherical segment; the housing 31 of the cover 3 in which it is engaged by its periphery has an appropriate circular shape.
  • a seal can be attached to the plate 4 so as to seal the device.
  • the plate 4 can, if desired, be made of transparent material, synthetic material for example. thus recalling the usual “glass breakage”.
  • the rearming of the plate 4 can, according to the invention, take place without removing the cover 3.
  • Figure 8 shows for example how a specialized tool 5, introduced into the housing 1 through an opening 11 provided therein and giving access to the underside of the plate 4, allows the reshaping thereof .
  • the opening 11 is narrow, so that only a specialized tool or reset tool can be engaged therein.
  • only a portion of the plate used can be reversibly deformable between two stable forms; for example, with regard to the circular shape illustrated for this plate in FIG. 7, only the central portion of such a plate could be preformed into the shape of a spherical segment, the rest of this plate being otherwise plane.
  • the action member it controls is not necessarily a push button; it could for example be directly an electrical contact.
  • Such an action member can either be attached to the housing which contains it, or be integrated therein.
  • This box meanwhile, can be attached projecting on any support surface, or embedded therein, with for example, according to known methods, a fixing screw or claws.

Landscapes

  • Breakers (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Push-Button Switches (AREA)
  • Connection Of Plates (AREA)

Description

L'invention concerne un dispositif d'enclenchement du genre « bris de glace destiné à empêcher l'enclenchement intempestif d'un organe d'action.The invention relates to an engagement device of the "glass breakage" type intended to prevent inadvertent engagement of an action member.

Les « bris de glace sont bien connus : l'organe d'action, en l'occurrence un bouton-poussoir, est protégé par une glace qu'il faut briser avant de pouvoir l'enclencher.“Glass breakage is well known: the action organ, in this case a push button, is protected by a glass which must be broken before it can be activated.

Ce type de protection contre tout enclenchement intempestif a deux inconvénients majeurs :

  • - Projection de petits éclats de verre qui pénètrent dans les revêtements de sol, peuvent être dangereux et sont difficiles à enlever.
  • - Réarmement relativement long, par remplacement du verre brisé par un verre neuf, ce qui interdit les essais de contrôle en grandeur nature.
This type of protection against inadvertent triggering has two major drawbacks:
  • - Projection of small glass fragments which penetrate into the floor coverings, can be dangerous and are difficult to remove.
  • - Relatively long reset, by replacing broken glass with new glass, which prohibits full-scale control tests.

On connaît, notamment par le document US-A-2424527 un dispositif d'enclenchement comportant un organe d'actionnement, constitué en l'occurrence par des lames de contact, disposé en dessous d'une plaque élastiquement déformable de manière réversible entre deux formes stables, l'une correspondant à une position d'attente, pour laquelle la plaque est bombée vers l'extérieur, laissant ainsi l'organe d'actionnement en position déclenchée, l'autre correspondant à une position d'enclenchement, pour laquelle la plaque est bombée vers l'intérieur enclenchant de ce fait l'organe d'actionnement.Known, in particular from document US-A-2424527, an interlocking device comprising an actuating member, constituted in this case by contact blades, disposed below an elastically deformable plate reversibly between two forms stable, one corresponding to a standby position, for which the plate is curved outwards, thus leaving the actuating member in the released position, the other corresponding to a latching position, for which the plate is curved inward thereby engaging the actuating member.

Le dispositif décrit dans ce brevet US permet un enclenchement sans projection de petits éclats de verre, mais ce brevet US ne donne aucune indication quant à son réarmement, lorsqu'il est utilisé dans un dispositif de type « bris de glace dans lequel l'organe d'action est, d'une manière générale, isolé vis-à-vis de l'extérieur.The device described in this US patent allows engagement without projection of small shards of glass, but this US patent gives no indication as to its rearming, when used in a device of the “glass breakage” type in which the organ of action is generally isolated from the outside.

On connaît également par le document CH-A-470061 un dispositif d'enclenchement comportant une feuille souple maintenant une plaque rigide bombée intérieurement, la convexité de la plaque étant destinée à assurer l'action sur une bille poussoir par une pression des doigts sur la feuille souple.Document CH-A-470061 also discloses an interlocking device comprising a flexible sheet holding a rigid plate domed internally, the convexity of the plate being intended to ensure the action on a pusher ball by pressure of the fingers on the flexible sheet.

On connaît aussi, par le document US-A-3 297 853 un dispositif du type classique avec glace de retenue d'un poussoir en position comprimée, le bris de glace comprimant le poussoir.Document US-A-3 297 853 also discloses a device of the conventional type with glass for retaining a pusher in the compressed position, broken glass compressing the pusher.

Ces dispositifs ne donnent pas entière satisfaction quant à leur réarmement, et en tout état de cause, le dispositif décrit dans le document US-A-3 297 853 entraîne, lors de l'enclenchement, une projection de petits éclats de verre.These devices are not entirely satisfactory as regards their rearming, and in any event, the device described in document US-A-3,297,853 causes, during the engagement, a projection of small shards of glass.

La présente invention a pour objet un dispositif d'enclenchement du genre « bris de glace évitant ces inconvénients.The subject of the present invention is an interlocking device of the “glass breaking type” avoiding these drawbacks.

Plus particulièrement, l'invention a pour objet un dispositif d'enclenchement du genre « bris de glace comportant un organe d'action et une plaque disposée au-dessus dudit organe d'action et empêchant toute action intempestive sur celui-ci, une portion au moins de ladite plaque étant élastiquement déformable de manière réversible entre deux formes stables, l'une correspondant à une position d'attente, pour laquelle la plaque est bombée vers l'extérieur, laissant ainsi l'organe d'action en position déclenchée, l'autre correspondant à une position d'enclenchement, pour laquelle la plaque est bombée vers l'intérieur, enclenchant de ce fait l'organe d'action, dispositif caractérisé en ce qu'il est prévu dans le boîtier un passage donnant accès à la face inférieure de la plaque.More particularly, the subject of the invention is an interlocking device of the “glass breakage” type comprising an action member and a plate placed above said action member and preventing any untimely action thereon, a portion at least of said plate being elastically deformable in a reversible manner between two stable forms, one corresponding to a waiting position, for which the plate is curved outwards, thus leaving the action member in the triggered position, the other corresponding to an engagement position, for which the plate is curved inward, thereby engaging the action member, device characterized in that there is provided in the housing a passage giving access to the underside of the plate.

Le passage de la position d'attente à la position d'alarme s'effectue par une poussée volontaire ou par un choc, par exemple à l'aide d'un marteau ; au réarmement, de préférence, le passage de la position d'alarme à la position d'attente peut se faire directement, à l'aide d'un outil spécialisé ; selon une forme de réalisation qui n'est pas revendiquée, le réarmement peut aussi se faire par démontage et remontage de l'ensemble, à l'aide d'un outil usuel, par exemple un tournevis.The transition from the standby position to the alarm position is effected by a voluntary push or by a shock, for example using a hammer; on resetting, preferably, the passage from the alarm position to the standby position can be done directly, using a specialized tool; according to an embodiment which is not claimed, the rearming can also be done by disassembly and reassembly of the assembly, using a conventional tool, for example a screwdriver.

Quoi qu'il en soit, le passage de l'organe d'action de la position d'attente à la position d'alarme se fait sans réel bris de glace ni projection d'éclats, et la rapidité du réarmement possible autorise des essais en grandeur nature, la brièveté du déclenchement ne pouvant dans ce cas être confondue avec un déclenchement réel.Anyway, the passage of the action member from the standby position to the alarm position is done without any real glass breakage or projection of splinters, and the speed of rearming possible allows tests in full-scale, the brevity of the trigger cannot in this case be confused with an actual trigger.

Les caractéristiques et avantages de l'invention ressortiront de la description qui va suivre, en référence aux dessins schématiques annexés sur lesquels :

  • la figure 1 est une vue en coupe d'une forme de réalisation du dispositif d'enclenchement selon l'invention, suivant la ligne I-I de la figure 2 ;
  • la figure 2 en est une vue en plan suivant la flèche Il de la figure 1 ;
  • la figure 3 est une vue analogue à celle de la figure 1, le bouton-poussoir étant enclenché ;
  • la figure 4 est une vue en plan d'une deuxième forme de réalisation de la plaque que comporte le dispositif d'enclenchement suivant l'invention ;
  • la figure 5 est une vue analogue à celle de la figure 1, pour une autre forme de réalisation du dispositif d'enclenchement ;
  • la figure 6 est une vue en plan de la plaque que comporte cette autre forme de réalisation ;
  • la figure 7 est une vue en plan d'une autre forme de réalisation du dispositif d'enclenchement selon l'invention ;
  • la figure 8 est une vue analogue à celle de la figure 3 et montrant comment réarmer au moyen d'un outil spécial la plaque que comporte le dispositif d'enclenchement suivant l'invention.
The characteristics and advantages of the invention will emerge from the description which follows, with reference to the appended schematic drawings in which:
  • Figure 1 is a sectional view of an embodiment of the latching device according to the invention, along line II of Figure 2;
  • Figure 2 is a plan view along arrow II of Figure 1;
  • Figure 3 is a view similar to that of Figure 1, the push button being engaged;
  • Figure 4 is a plan view of a second embodiment of the plate that comprises the latching device according to the invention;
  • Figure 5 is a view similar to that of Figure 1, for another embodiment of the latching device;
  • Figure 6 is a plan view of the plate that includes this other embodiment;
  • Figure 7 is a plan view of another embodiment of the latching device according to the invention;
  • Figure 8 is a view similar to that of Figure 3 and showing how to reset by means of a special tool the plate that includes the latching device according to the invention.

D'une manière générale, le dispositif d'enclenchement suivant l'invention comporte un boîtier 1 servant de logement à un bouton-poussoir 2. Un couvercle 3, qui est en forme de cadre, ferme le boîtier 1.In general, the latching device according to the invention comprises a housing 1 serving as a housing for a push button 2. A cover 3, which is in the form of a frame, closes the housing 1.

Dans la forme de réalisation représentée sur les figures 1 à 3, le couvercle 3 est rapporté de manière amovible, par des vis 10, sur le boîtier 1 et est rectangulaire ; par deux de ses bords internes opposés, il forme un logement 31, qui est en fait constitué par une échancrure faite dans son épaisseur 3.In the embodiment shown in the Figures 1 to 3, the cover 3 is removably attached, by screws 10, on the housing 1 and is rectangular; by two of its opposite internal edges, it forms a housing 31, which is in fact constituted by a notch made in its thickness 3.

Une plaque rectangulaire 4, qui est en matériau élastique, est engagée à force dans ce logement 31, par une partie de sa périphérie, à savoir ses deux bords opposés correspondants ; ses dimensions relatives, entre ces deux bords opposés, sont supérieures à celles du logement 31, en sorte qu'elle ne peut pas prendre une forme plane et est au contraire, par élasticité, déformable de manière réversible entre deux formes stables, l'une correspondant à une position d'attente, pour laquelle elle est « bombée vers l'extérieur du boîtier 1, l'autre correspondant à une position d'alarme, pour laquelle elle est « bombée » vers l'intérieur de celui-ci.A rectangular plate 4, which is made of elastic material, is forcibly engaged in this housing 31, by a part of its periphery, namely its two corresponding opposite edges; its relative dimensions, between these two opposite edges, are greater than those of the housing 31, so that it cannot take a planar shape and is on the contrary, by elasticity, reversibly deformable between two stable shapes, one corresponding to a waiting position, for which it is "convex towards the outside of the housing 1, the other corresponding to an alarm position, for which it is" convex "towards the interior thereof.

A la figure 1, la plaque 4 est « bombée » vers l'extérieur du boîtier ; elle est alors à distance du bouton-poussoir 2 et celui-ci se trouve en position déclenchée ou « position d'attente ».In Figure 1, the plate 4 is "curved" outward from the housing; it is then at a distance from the push button 2 and the latter is in the triggered position or "waiting position".

A la figure 3, suite à une pression ou à un choc, la plaque 4, après franchissement élastique d'une configuration du point mort, est bombée vers l'intérieur du boîtier 1. Le bouton-poussoir 2 étant positionné en conséquence, elle enclenche ce dernier et le maintient dans cette position enclenchée, ou « position d'alarme ».In FIG. 3, following a pressure or a shock, the plate 4, after elastic crossing of a neutral configuration, is curved towards the interior of the housing 1. The push button 2 being positioned accordingly, it activates the latter and keeps it in this engaged position, or "alarm position".

Dans ce qui précède, le logement 31 du cadre 3 forme par lui-même un moyen de bridage de la plaque 4, qui en maintient comme décrit, la forme bombée, soit dans un sens, soit dans l'autre.In the foregoing, the housing 31 of the frame 3 forms by itself a means of clamping the plate 4, which maintains, as described, the convex shape, either in one direction or in the other.

Dans un autre mode de réalisation, figure 4, la plaque 4 est également élastiquement déformable de manière réversible, mais son moyen de bridage est formé par un cadre rigide 43, distinct du couvercle 3. Ce mode de réalisation permet de loger avec du jeu l'ensemble plaque 4 et cadre 43 dans le logement 31 du couvercle 3, les tolérances de fabrication étant alors moins sévères.In another embodiment, FIG. 4, the plate 4 is also elastically deformable in a reversible manner, but its clamping means is formed by a rigid frame 43, distinct from the cover 3. This embodiment makes it possible to accommodate with play l 'plate 4 and frame 43 in the housing 31 of the cover 3, the manufacturing tolerances then being less severe.

Dans un troisième mode de réalisation, figures 5 et 6, le cadre rigide 43 ainsi associé à la plaque 4 fait corps avec celle-ci. La plaque 4 comporte en fait dans ce cas trois bandes : une bande centrale 41, qui, par déformation plastique, par moulage, déformation à chaud, emboutissage, par exemple, ou autre procédé connu, a été préformée de manière à présenter un bombé et deux bandes latérales 42 et 42', qui sont détachées de la bande centrale 41, et qui sont non déformées et donc planes. La bande 41 supposée déployée à plat est sensiblement plus longue que les bandes 42 et 42'.In a third embodiment, Figures 5 and 6, the rigid frame 43 thus associated with the plate 4 is integral with the latter. The plate 4 in fact comprises in this case three bands: a central band 41, which, by plastic deformation, by molding, hot deformation, stamping, for example, or other known method, has been preformed so as to have a convex shape and two lateral strips 42 and 42 ', which are detached from the central strip 41, and which are not deformed and therefore flat. The strip 41 assumed to be deployed flat is substantially longer than the strips 42 and 42 '.

Deux bandes transversales 44, 44', qui font corps avec la bande centrale 41, relient les bandes latérales 42, 42', en formant avec celles-ci le cadre rigide 43 associé.Two transverse bands 44, 44 ', which form one body with the central band 41, connect the lateral bands 42, 42', forming with them the associated rigid frame 43.

Dans un quatrième mode de réalisation, la plaque 4 est de forme circulaire et est préformée globalement en forme de segment sphérique ; le logement 31 du couvercle 3 dans lequel elle est engagée par sa périphérie a une forme circulaire appropriée.In a fourth embodiment, the plate 4 is circular in shape and is generally preformed into the shape of a spherical segment; the housing 31 of the cover 3 in which it is engaged by its periphery has an appropriate circular shape.

De manière avantageuse, un joint peut être rapporté sur la plaque 4 de manière à rendre le dispositif étanche.Advantageously, a seal can be attached to the plate 4 so as to seal the device.

Quel que soit le mode de réalisation choisi, la plaque 4 peut, si désiré, être réalisée en matériau transparent, matière synthétique par exemple,. rappelant ainsi les « bris de glace » usuels.Whatever the embodiment chosen, the plate 4 can, if desired, be made of transparent material, synthetic material for example. thus recalling the usual “glass breakage”.

Le réarmement de la plaque 4 peut, suivant l'invention, s'opérer sans démontage du couvercle 3.The rearming of the plate 4 can, according to the invention, take place without removing the cover 3.

La figure 8 montre par exemple comment un outil spécialisé 5, introduit dans le boîtier 1 au travers d'une ouverture 11 prévue dans celui-ci et donnant accès à la face inférieure de la plaque 4, permet la remise en forme de celle-ci. De manière avantageuse, l'ouverture 11 est étroite, de telle sorte que seul un outil spécialisé ou outil de réarmement peut y être engagé.Figure 8 shows for example how a specialized tool 5, introduced into the housing 1 through an opening 11 provided therein and giving access to the underside of the plate 4, allows the reshaping thereof . Advantageously, the opening 11 is narrow, so that only a specialized tool or reset tool can be engaged therein.

Bien entendu, la présente invention ne se limite pas aux formes de réalisation décrites et représentées, mais englobe toute variante d'exécution et/ou de combinaison de leurs divers éléments.Of course, the present invention is not limited to the embodiments described and shown, but encompasses any variant embodiment and / or combination of their various elements.

En particulier, seule une portion de la plaque mise en oeuvre peut être déformable de manière réversible entre deux formes stables ; par exemple, s'agissant de la forme circulaire illustrée pour cette plaque à la figure 7, seule la portion centrale d'une telle plaque pourrait être préformée en forme de segment sphérique, le reste de cette plaque étant par ailleurs plan.In particular, only a portion of the plate used can be reversibly deformable between two stable forms; for example, with regard to the circular shape illustrated for this plate in FIG. 7, only the central portion of such a plate could be preformed into the shape of a spherical segment, the rest of this plate being otherwise plane.

En outre, l'organe d'action qu'elle commande, n'est pas nécessairement un bouton-poussoir ; il pourrait par exemple s'agir directement d'un contact électrique.In addition, the action member it controls is not necessarily a push button; it could for example be directly an electrical contact.

De plus, un tel organe d'action peut être soit rapporté sur le boîtier qui le contient, soit être intégré à celui-ci.In addition, such an action member can either be attached to the housing which contains it, or be integrated therein.

Ce boîtier, quant à lui, peut être rapporté en saillie sur une quelconque surface de support, ou encastré dans celle-ci, avec par exemple, suivant des modalités connues, une fixation à vis ou à griffes.This box, meanwhile, can be attached projecting on any support surface, or embedded therein, with for example, according to known methods, a fixing screw or claws.

Enfin, on notera que, en cas de nécessité, en l'absence momentanée de disponibilité de plaques, une telle plaque peut être remplacée par une plaque en verre traditionnel, et le dispositif d'enclenchement, être encore, malgré tout, opé- ratif.Finally, it will be noted that, if necessary, in the momentary absence of availability of plates, such a plate can be replaced by a traditional glass plate, and the interlocking device, still be, despite everything, operational .

Claims (10)

1. A tripping apparatus of the « break glass" type comprising an actuating member and a plate disposed over the actuating member and preventing any untimely action thereon, a portion at least of said plate being elastically deformable reversibly between two stable forms, one form corresponding to a ready position in which the plate is curved outwardly, thus leaving the actuating member in the inoperative position, and the other form corresponding to a tripping position in which the plate is curved inwardly, thereby tripping the actuating member, characterised in that provided in the casing (1) is a passage (11) providing access to the lower face of the plate (4).
2. A tripping apparatus according to claim 1, characterised in that the passage (11) is narrow so that only a specialist tool can be engaged therein.
3. A tripping apparatus according to either one of claims 1 or 2, characterised in that the plate (4) is held in its form by a clamping means (31, 43).
4. A tripping apparatus according to claim 3, characterised in that the clamping means comprises two oppositely disposed recesses (31) in a cover (3), the plate being engaged in said recesses by means of a portion at least of its periphery.
5. A tripping apparatus according to claim. 3, characterised in that the clamping means is a rigid frame (43).
6. A tripping apparatus according to claim 3, characterised in that the plate (4) has two portions, one portion (41) being elastically reversibly deformable and the other portion forming the rigid frame (43) which is associated therewith.
7. A tripping apparatus according to claim 6, characterised in that the deformable portion of the plate (4) is a central strip (41), the rigid frame (43) being formed by two lateral strips (42, 42') which are detached from the central strip (41) and two transverse strips (44, 44') which are integral with the central strip (41) and which join the lateral strips (42, 42').
8. A tripping apparatus according to any one of claims 1 to 7, characterised in that a joint is fitted to the plate (4) so as to seal the apparatus.
9. A tripping apparatus according to any one of claims 1 to 8, wherein the actuating member is disposed in a casing (1) closed by a cover (3) forming a housing for the plate (4), characterised in that the cover (3) is removably fitted to the casing.
10. A tripping apparatus according to any one of claims 1 to 8, characterised in that plate (4) is made of transparent material.
EP81401884A 1980-11-28 1981-11-27 Circuit closing device of the "emergency breakglass point" type Expired EP0053557B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8025256 1980-11-28
FR8025256A FR2495374A1 (en) 1980-11-28 1980-11-28 BREAKING DEVICE OF THE TYPE "ICE BREAK"

Publications (2)

Publication Number Publication Date
EP0053557A1 EP0053557A1 (en) 1982-06-09
EP0053557B1 true EP0053557B1 (en) 1985-01-30

Family

ID=9248435

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81401884A Expired EP0053557B1 (en) 1980-11-28 1981-11-27 Circuit closing device of the "emergency breakglass point" type

Country Status (5)

Country Link
EP (1) EP0053557B1 (en)
BR (1) BR8107820A (en)
DE (1) DE3168703D1 (en)
ES (1) ES261729Y (en)
FR (1) FR2495374A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1172284B (en) * 1982-08-03 1987-06-18 Kac Alarm Co Ltd IMPROVEMENT IN ELECTRIC SWITCHES
FR2813705B1 (en) * 2000-09-05 2002-11-29 Legrand Sa MANUAL MEMBRANE TRIGGERING DEVICE
FR2813704B1 (en) * 2000-09-05 2003-10-31 Legrand Sa RESETABLE MANUAL TRIGGER DEVICE
EP1237167A3 (en) * 2000-12-05 2004-08-18 Necati Kaya Push button switch for irreversibly closing an electric circuit and low voltage lighting unit or bottlelike houseware using the same
FR2966962B1 (en) * 2010-10-28 2012-11-30 Cooper Technologies Co FIRE ALARM DEVICE WITH INTEGRATED MANUAL TRIGGER
CN106548608B (en) 2015-09-18 2021-06-04 海湾安全技术有限公司 Push plate of hand-pulling alarm device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2424527A (en) * 1945-09-10 1947-07-22 Gen Electric Electric switch

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3296404A (en) * 1964-08-28 1967-01-03 Master Specialties Company Protective instrument cover
US3297853A (en) * 1965-10-14 1967-01-10 Square D Co Emergency break-glass pushbutton
CH470061A (en) * 1968-02-29 1969-03-15 Siemens Ag Albis Switch button

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2424527A (en) * 1945-09-10 1947-07-22 Gen Electric Electric switch

Also Published As

Publication number Publication date
EP0053557A1 (en) 1982-06-09
FR2495374A1 (en) 1982-06-04
DE3168703D1 (en) 1985-03-14
ES261729Y (en) 1983-04-01
BR8107820A (en) 1982-09-08
FR2495374B1 (en) 1983-09-09
ES261729U (en) 1982-10-16

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