EP1029559B1 - Triggering system with fusible element - Google Patents

Triggering system with fusible element Download PDF

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Publication number
EP1029559B1
EP1029559B1 EP00400434A EP00400434A EP1029559B1 EP 1029559 B1 EP1029559 B1 EP 1029559B1 EP 00400434 A EP00400434 A EP 00400434A EP 00400434 A EP00400434 A EP 00400434A EP 1029559 B1 EP1029559 B1 EP 1029559B1
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EP
European Patent Office
Prior art keywords
fuse element
rod
tubular element
activation system
stop
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
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EP00400434A
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German (de)
French (fr)
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EP1029559A1 (en
Inventor
Wilhelm Paul Strulik
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Individual
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Individual
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/24—Operating or controlling mechanisms
    • A62C2/241—Operating or controlling mechanisms having mechanical actuators and heat sensitive parts
    • A62C2/242—Operating or controlling mechanisms having mechanical actuators and heat sensitive parts with fusible links
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/18—Sliding dampers
    • A62C2/20—Sliding dampers at 90 degrees to the plane of the opening

Definitions

  • the subject of the present invention is a triggering system fuse element.
  • the invention relates to a system that allows cause a rod to move very suddenly when the temperature surrounding area exceeds a predetermined threshold, the displacement of this rod allowing to actuate a device, for example a safety device.
  • the system of trigger is intended to be mounted in an adverse environment likely to affect the mechanical strength of this system, in particular by temperature or humidity conditions.
  • the longitudinal bulk due to the assembly constituted by the tubular element and the return spring is very significantly reduced compared to previous solutions.
  • the trigger system is used to equip a valve aeration, this allows to have a great freedom to choose the race of the shutter fixed on the rod of the system, the speed of closing and especially the closing pressure.
  • the system trigger can be adjusted in position relative to the body of the valve.
  • the spring is entirely contained in the tubular element and preferably also the second end of the tubular piece is closed by the second means forming a stop or said second piece of the fuse element.
  • the spring is the critical piece of trigger system is fully contained in a limited closed volume by the tubular piece whose end is closed.
  • the two constituent pieces the fuse element are each provided with a hole
  • the mechanical connection means include a first leg secured to the second end of the element tubular whose free end enters the hole of the second piece of the fuse element and the mechanical cooperation means comprise a second lug secured to the second end of the rod and whose end free penetrates the hole of the first piece of the fuse element.
  • the triggering system characterized in that the second piece of the fuse element consists of a nut; in that the mechanical connection means comprise a thread on the outer face of the second end of the tubular element, on which is mounted the nut, in that the first piece of the fuse element consists of a cover fixed on the lateral face of the nut by said fusible material and in that the means of mechanical cooperation consist in the fact that the second end of said rod is supported on the inner face of said lid.
  • This second embodiment is of particular interest in the measure or not only the longitudinal clutter is reduced, but also the transverse bulk in directions perpendicular to the length of the moving rod.
  • the triggering system 10 comprises a tubular part 12 of which a first end 14 is provided with a rim 16 which limits an axial hole 18 and a second end 20 which is open.
  • the tubular part 12 comprises an external thread 22 to facilitate mounting on a device, for example a ventilation valve.
  • a axial displacement rod 24 Inside the tubular part 12 is mounted a axial displacement rod 24 whose end 26 is intended to be secured a device to be controlled and whose second end 28 is equipped with a mechanical stop 30 which is preferably constituted by a washer fixed on the end 28 of the rod 24.
  • This rod is in one piece.
  • a return spring 32 is mounted around the rod 24 inside the tubular part 12. The first end 34 of the spring bears on the stop 16, while its second end 36 is supported on the mechanical stop 30 of the rod 24.
  • the system of trigger is equipped with a fuse element 40 which is, in the mode of considered embodiment, preferably consisting of two metal plates 42 and 44 interconnected by a layer of an adhesive fuse material 46 such that a soldering or soldering material or an adhesive having a melting point at the desired trigger temperature.
  • Exhibits 42 and 44 are each equipped with a hole 48 and 50.
  • the tubular piece 12 is provided with near its end 20 of a first leg extending in one direction radial 52, while the mechanical stop 30 and therefore the rod 24 are also equipped near their end 28 with a second radial tab 54. ends of the legs 52 and 54 are intended to penetrate the orifices 48 and 50 of the fuse element 40.
  • the different elements of the trigger system are dimensioned in such a way that when the system is intact, the spring 32 is completely disposed inside the tubular piece 12 and the mechanical stop 30 closes the open end 20 of this tubular piece. So, spring 32 is completely enclosed within the tubular part 12, in particular because the orifice 18 of the tubular piece has a diameter which is very slightly greater than the diameter of the stem 24.
  • the operation of the fuse trigger system is very simple.
  • the adhesive material 46 loses its adhesive properties and its mechanical properties and allows the brutal separation of the pieces 42 and 44. This separation releases the leg 54 relative to the tab 52, which allows the relaxation of the spring 32 and therefore the displacement of the rod 24 towards the rear, with reference to FIG.
  • the fuse element which bears the reference 60 consists of a flat cover 62 which is fixed on one side lateral 64 of a nut 66.
  • the connection between the lateral face 64 and the periphery of the inner face of the plate 62 is made using a layer of an adhesive material 68 which loses its adhesion properties at the predetermined temperature and which is the same nature as the material constituting the layer 46 of the first mode of production.
  • the nut 66 is screwed onto the external thread 22 of the tubular piece 12 to its open end 20.
  • the plate 62 bears on the end 28 of the rod 24 and compresses the spring inside the tubular part 12.
  • the spring 32 is entirely confined inside the tubular piece 12 whose front end is substantially closed by the flange 16 and the rod 24 and whose rear end is closed by the plate 62.
  • the transverse bulk of the triggering system is reduced compared to that of the embodiment of Figure 1 since it is limited to the outer diameter of the nut 66.
  • FIGS. 5a and 5b show an example of use of the system of triggering 10 to the realization of a ventilation valve 80.
  • the body 82 of the valve is shown which constitutes a seat 84 for shutter 86 of the valve.
  • the shutter 86 is attached to the end 26 of the rod 24 trigger system.
  • the body 82 of the valve is equipped with a system fixing and positioning of the trigger system 10 which comprises preferably radiating arms 88 connecting the body 82 to a threaded axial hub 90.
  • the tubular part 12 of the triggering system 10 which in this case comprises the external thread 22 is screwed into the threaded axial hub 90 of the valve.
  • a against-nut 92 screwed on the external thread 22 of the tubular part allows adjust the position of the tubular piece 12 relative to the fastening system 88.
  • the trigger system with fuse element may have other uses.
  • the end 26 of the stem 24 may constitute a retractable latch to maintain in the rest position a piece, for example a shutter, pivotally mounted about an axis parallel to the rod 24 and subjected to the action of a return spring. Under the effect of the temperature, the rod 24 is retracted and allows rotation of the part.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fuses (AREA)
  • Safety Valves (AREA)
  • Air Bags (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

The release system consists of a fuse (40) made from two plates held together by solder or an adhesive which separates them when the air temperatures exceeds a set level. The fuse links together the ends of two radial arms (52, 54) attached respectively to a threaded regulating bush (12) passing through a support (90) and a spring-loaded rod (24) located partially inside the bush. The spring (32) is located inside the bush and is held in place between an end rim (14) on the bush and a collar (30) on the rod end.

Description

La présente invention a pour objet un système de déclenchement à élément fusible.The subject of the present invention is a triggering system fuse element.

De façon plus précise, l'invention concerne un système qui permet de provoquer le déplacement d'une tige de façon très soudaine lorsque la température environnante dépasse un seuil prédéterminé, le déplacement de cette tige permettant d'actionner un dispositif, par exemple un dispositif de sécurité.More specifically, the invention relates to a system that allows cause a rod to move very suddenly when the temperature surrounding area exceeds a predetermined threshold, the displacement of this rod allowing to actuate a device, for example a safety device.

On rencontre ce problème notamment, mais non exclusivement, dans le cas des soupapes d'aération installées dans les locaux privés ou publics et dont la fonction est en temps normal de laisser le passage pour l'air circulant dans le conduit sur lequel est montée la soupape d'aération et de commander la fermeture de cette soupape lorsque des conditions de température dans le conduit dépassent un seuil prédéterminé (voir par exemple le document GB-A-1061548, sur lequel est fondée la forme en deux parties de la revendication 1). Une telle action a bien sûr pour but d'empêcher la propagation d'un incendie ou de fumée dans les locaux en cas de sinistre.This problem is particularly, but not exclusively, the case of ventilation valves installed in private or public premises and of which the function is normally to leave the passage for the air circulating in the duct on which is mounted the vent valve and to control the closure of this valve when temperature conditions in the duct exceed a predetermined threshold (see for example GB-A-1061548, on which is based the two-part form of claim 1). Such action is of course intended to prevent the Spread of fire or smoke in the premises in the event of a disaster.

On comprend que, de par sa nature même, le système de déclenchement est destiné à être monté dans un environnement défavorable susceptible d'affecter la tenue mécanique de ce système notamment par les conditions de température ou d'humidité.It is understandable that, by its very nature, the system of trigger is intended to be mounted in an adverse environment likely to affect the mechanical strength of this system, in particular by temperature or humidity conditions.

On comprend également que, souvent, le conduit de ventilation présente à proximité de la bouche de ventilation un coude qui fait que la place disponible pour monter le système de déclenchement de la soupape d'aération est limitée.It is also understood that often the ventilation duct present near the vent mouth a bend that makes that place available to mount the trigger system the aeration valve is limited.

Par ailleurs, on comprend que ces soupapes d'aération constituant un élément très important de sécurité des bâtiments, il faut s'assurer que son système de déclenchement est en état de fonctionner, ce qui entraíne la mise en oeuvre de contrôles techniques périodiques. Ces contrôles périodiques nécessitent le démontage de la bouche de ventilation, ce qui est une opération relativement onéreuse.Moreover, it is understood that these aeration valves constituting a very important element of building safety, it must be ensured that its system triggering is in working order, which leads to the implementation of periodic technical inspections. These periodic checks require the disassembly of the ventilation vent, which is a relatively expensive.

On comprend donc qu'il existe un besoin de disposer de systèmes de déclenchement à élément fusible de faible encombrement dont, si possible, la structure même garantit leur bon fonctionnement malgré l'environnement défavorable afin d'éviter d'avoir à effectuer les contrôles périodiques.It is therefore understandable that there is a need for systems of low-profile fuse element tripping, of which, if possible, the structure itself ensures their smooth operation despite the environment unfavorable in order to avoid having to carry out periodic checks.

Pour atteindre ce but selon l'invention, le système de déclenchement à élément fusible se caractérise en ce qu'il comprend :

  • un élément tubulaire comportant une première extrémité munie de premiers moyens formant butée et d'un orifice et une deuxième extrémité ouverte, ledit élément tubulaire comportant un filetage externe de réglage en position ;
  • une tige montée mobile selon l'axe dudit élément tubulaire présentant une première extrémité qui fait saillie hors dudit orifice et une deuxième extrémité munie de deuxièmes moyens formant butée mécanique ;
  • un ressort monté dans l'élément tubulaire autour de ladite tige et présentant une première extrémité en appui sur les premiers moyens formant butée et une deuxième extrémité en appui sur les deuxièmes moyens formant butée ;
  • un élément fusible comprenant une première pièce reliée mécaniquement à une deuxième pièce par un matériau fusible à une température prédéterminée ;
  • des moyens pour relier mécaniquement la première pièce de l'élément fusible à la deuxième extrémité de ladite pièce tubulaire ; et
  • des moyens pour faire coopérer mécaniquement la deuxième pièce de l'élément fusible avec la deuxième extrémité de ladite tige, par quoi ledit ressort est maintenu comprimé au moins partiellement dans ledit élément tubulaire.
To achieve this object according to the invention, the fusible element triggering system is characterized in that it comprises:
  • a tubular member having a first end provided with first stop means and an orifice and a second open end, said tubular member having an external adjustment thread in position;
  • a rod mounted movably along the axis of said tubular element having a first end projecting from said orifice and a second end provided with second means forming a mechanical stop;
  • a spring mounted in the tubular element around said rod and having a first end bearing on the first abutment means and a second end bearing on the second abutment means;
  • a fuse element comprising a first part mechanically connected to a second part by a fusible material at a predetermined temperature;
  • means for mechanically connecting the first part of the fuse element to the second end of said tubular part; and
  • means for mechanically cooperating the second part of the fuse element with the second end of said rod, whereby said spring is kept compressed at least partially in said tubular element.

On comprend que, grâce aux dispositions de l'invention, l'encombrement longitudinal dû à l'ensemble constitué par l'élément tubulaire et le ressort de rappel est très sensiblement réduit par rapport aux solutions antérieures. Cela donne davantage de liberté pour choisir la course de la tige et la vitesse de fermeture. Dans le cas où le système de déclenchement sert à équiper une soupape d'aération, cela permet donc de disposer d'une grande liberté pour choisir la course de l'obturateur fixé sur la tige du système, la vitesse de fermeture et surtout la pression de fermeture. En outre, grâce à la présence du filetage externe, le système de déclenchement peut être réglé en position par rapport au corps de la soupape.It is understood that, thanks to the provisions of the invention, the longitudinal bulk due to the assembly constituted by the tubular element and the return spring is very significantly reduced compared to previous solutions. This gives more freedom to choose the stem stroke and the speed of closing. In the case where the trigger system is used to equip a valve aeration, this allows to have a great freedom to choose the race of the shutter fixed on the rod of the system, the speed of closing and especially the closing pressure. In addition, thanks to the presence of the external thread, the system trigger can be adjusted in position relative to the body of the valve.

De préférence, à l'état comprimé, le ressort est entièrement contenu dans l'élément tubulaire et de préférence également, la deuxième extrémité de la pièce tubulaire est obturée par les deuxièmes moyens formant butée ou ladite deuxième pièce de l'élément fusible.Preferably, in the compressed state, the spring is entirely contained in the tubular element and preferably also the second end of the tubular piece is closed by the second means forming a stop or said second piece of the fuse element.

On comprend qu'ainsi le ressort qui constitue la pièce critique du système de déclenchement est entièrement contenu dans un volume fermé limité par la pièce tubulaire dont l'extrémité est obturée.We understand that the spring is the critical piece of trigger system is fully contained in a limited closed volume by the tubular piece whose end is closed.

Selon un premier mode de réalisation, les deux pièces constituant l'élément fusible sont chacune munies d'un trou, les moyens de liaison mécanique comprennent une première patte solidaire de la deuxième extrémité de l'élément tubulaire dont l'extrémité libre pénètre dans le trou de la deuxième pièce de l'élément fusible et les moyens de coopération mécanique comprennent une deuxième patte solidaire de la deuxième extrémité de la tige et dont l'extrémité libre pénètre dans le trou de la première pièce de l'élément fusible.According to a first embodiment, the two constituent pieces the fuse element are each provided with a hole, the mechanical connection means include a first leg secured to the second end of the element tubular whose free end enters the hole of the second piece of the fuse element and the mechanical cooperation means comprise a second lug secured to the second end of the rod and whose end free penetrates the hole of the first piece of the fuse element.

Selon un deuxième mode de réalisation, le système de déclenchement se caractérise en ce que la deuxième pièce de l'élément fusible consiste en un écrou ; en ce que les moyens de liaison mécanique comprennent un filetage sur la face externe de la deuxième extrémité de l'élément tubulaire, sur lequel est monté l'écrou, en ce que la première pièce de l'élément fusible consiste en un couvercle fixé sur la face latérale de l'écrou par ledit matériau fusible et en ce que les moyens de coopération mécanique consistent dans le fait que la deuxième extrémité de ladite tige est en appui sur la face interne dudit couvercle.According to a second embodiment, the triggering system characterized in that the second piece of the fuse element consists of a nut; in that the mechanical connection means comprise a thread on the outer face of the second end of the tubular element, on which is mounted the nut, in that the first piece of the fuse element consists of a cover fixed on the lateral face of the nut by said fusible material and in that the means of mechanical cooperation consist in the fact that the second end of said rod is supported on the inner face of said lid.

Ce deuxième mode de réalisation présente un intérêt particulier dans la mesure ou non seulement l'encombrement longitudinal est réduit, mais également l'encombrement transversal selon des directions perpendiculaires à la longueur de la tige mobile.This second embodiment is of particular interest in the measure or not only the longitudinal clutter is reduced, but also the transverse bulk in directions perpendicular to the length of the moving rod.

D'autres caractéristiques et avantages de l'invention apparaítront mieux à la lecture de la description qui suit de plusieurs modes de réalisation de l'invention donnés à titre d'exemples non limitatifs. La description se réfère aux figures annexées, sur lesquelles :

  • la figure 1 est une vue en coupe partielle d'un système de déclenchement à élément fusible en position de repos ;
  • la figure 2 est une vue de détail en perspective montrant un mode préféré de réalisation de l'élément fusible ;
  • la figure 3 est une vue du système de déclenchement de la figure 1 après que celui-ci ait fonctionné ;
  • la figure 4 est une vue en coupe longitudinale d'un deuxième mode de réalisation du système de déclenchement à élément fusible ; et
  • les figures 5A et 5B illustrent l'utilisation du système de déclenchement selon la figure 1 pour réaliser une soupape d'aération.
Other features and advantages of the invention will appear better on reading the following description of several embodiments of the invention given by way of non-limiting examples. The description refers to the appended figures, in which:
  • Figure 1 is a partial sectional view of a fusible element trigger system in the rest position;
  • Figure 2 is a perspective detail view showing a preferred embodiment of the fuse element;
  • Figure 3 is a view of the trigger system of Figure 1 after it has operated;
  • Figure 4 is a longitudinal sectional view of a second embodiment of the fusible element trigger system; and
  • Figs. 5A and 5B illustrate the use of the trigger system according to Fig. 1 to provide an aeration valve.

En se référant tout d'abord aux figures 1 à 3, on va décrire un premier mode de réalisation du système de déclenchement à élément fusible.Referring first to Figures 1 to 3, we will describe a first embodiment of the fusible element trigger system.

Le système de déclenchement 10 comprend une pièce tubulaire 12 dont une première extrémité 14 est munie d'un rebord 16 qui limite un trou axial 18 et une deuxième extrémité 20 qui est ouverte. La pièce tubulaire 12 comporte un filetage externe 22 pour en faciliter le montage sur un dispositif, par exemple une soupape de ventilation. A l'intérieur de la pièce tubulaire 12 est montée une tige à déplacement axial 24 dont l'extrémité 26 est destinée à être rendue solidaire d'un dispositif à commander et dont la deuxième extrémité 28 est équipée d'une butée mécanique 30 qui est de préférence constituée par une rondelle fixée sur l'extrémité 28 de la tige 24. Cette tige est en une seule pièce. Un ressort de rappel 32 est monté autour de la tige 24 à l'intérieur de la pièce tubulaire 12. La première extrémité 34 du ressort est en appui sur la butée 16, alors que sa deuxième extrémité 36 est en appui sur la butée mécanique 30 de la tige 24. Le système de déclenchement est équipé d'un élément fusible 40 qui est, dans le mode de réalisation considéré, de préférence constitué par deux plaquettes métalliques 42 et 44 reliées entre elles par une couche d'un matériau fusible adhésif 46 tel qu'un matériau de soudure, de brasage ou encore une colle présentant un point de fusion à la température de déclenchement souhaitée. Les pièces 42 et 44 sont chacune équipées d'un trou 48 et 50.The triggering system 10 comprises a tubular part 12 of which a first end 14 is provided with a rim 16 which limits an axial hole 18 and a second end 20 which is open. The tubular part 12 comprises an external thread 22 to facilitate mounting on a device, for example a ventilation valve. Inside the tubular part 12 is mounted a axial displacement rod 24 whose end 26 is intended to be secured a device to be controlled and whose second end 28 is equipped with a mechanical stop 30 which is preferably constituted by a washer fixed on the end 28 of the rod 24. This rod is in one piece. A return spring 32 is mounted around the rod 24 inside the tubular part 12. The first end 34 of the spring bears on the stop 16, while its second end 36 is supported on the mechanical stop 30 of the rod 24. The system of trigger is equipped with a fuse element 40 which is, in the mode of considered embodiment, preferably consisting of two metal plates 42 and 44 interconnected by a layer of an adhesive fuse material 46 such that a soldering or soldering material or an adhesive having a melting point at the desired trigger temperature. Exhibits 42 and 44 are each equipped with a hole 48 and 50.

Comme le montre la figure 1, la pièce tubulaire 12 est munie à proximité de son extrémité 20 d'une première patte s'étendant selon une direction radiale 52, alors que la butée mécanique 30 et donc la tige 24 sont également équipées à proximité de leur extrémité 28 d'une deuxième patte radiale 54. Les extrémités des pattes 52 et 54 sont destinées à pénétrer dans les orifices 48 et 50 de l'élément fusible 40. Les différents éléments du système de déclenchement sont dimensionnés de telle manière que, lorsque le système est intact, le ressort 32 est entièrement disposé à l'intérieur de la pièce tubulaire 12 et la butée mécanique 30 obture l'extrémité ouverte 20 de cette pièce tubulaire. Ainsi, le ressort 32 est entièrement enfermé à l'intérieur de la pièce tubulaire 12 notamment du fait que l'orifice 18 de la pièce tubulaire a un diamètre qui est très légèrement supérieur au diamètre de la tige 24.As shown in FIG. 1, the tubular piece 12 is provided with near its end 20 of a first leg extending in one direction radial 52, while the mechanical stop 30 and therefore the rod 24 are also equipped near their end 28 with a second radial tab 54. ends of the legs 52 and 54 are intended to penetrate the orifices 48 and 50 of the fuse element 40. The different elements of the trigger system are dimensioned in such a way that when the system is intact, the spring 32 is completely disposed inside the tubular piece 12 and the mechanical stop 30 closes the open end 20 of this tubular piece. So, spring 32 is completely enclosed within the tubular part 12, in particular because the orifice 18 of the tubular piece has a diameter which is very slightly greater than the diameter of the stem 24.

Le fonctionnement du système de déclenchement à élément fusible est très simple. Lorsque la température atteint la valeur prédéterminée, la couche de matériau adhésif 46 perd ses propriétés adhésives et ses propriétés mécaniques et permet la séparation brutale des pièces 42 et 44. Cette séparation libère la patte 54 par rapport à la patte 52, ce qui autorise la détente du ressort 32 et donc le déplacement de la tige 24 vers l'arrière si l'on se réfère à la figure 3.The operation of the fuse trigger system is very simple. When the temperature reaches the predetermined value, the adhesive material 46 loses its adhesive properties and its mechanical properties and allows the brutal separation of the pieces 42 and 44. This separation releases the leg 54 relative to the tab 52, which allows the relaxation of the spring 32 and therefore the displacement of the rod 24 towards the rear, with reference to FIG.

En se référant maintenant à la figure 4, on va décrire un deuxième mode de réalisation du système de déclenchement à élément fusible qui se différencie du système de la figure 1 uniquement par la réalisation de l'élément fusible.Referring now to Figure 4, we will describe a second embodiment of the fusible element trigger system which is differentiates from the system of Figure 1 only by the realization of the element fuse.

Selon ce mode de réalisation, l'élément fusible qui porte la référence générale 60 est constitué par un couvercle plat 62 qui est fixé sur une face latérale 64 d'un écrou 66. La liaison entre la face latérale 64 et la périphérie de la face interne de la plaque 62 est réalisée à l'aide d'une couche d'un matériau adhésif 68 qui perd ses propriétés d'adhérence à la température prédéterminée et qui est de la même nature que le matériau constituant la couche 46 du premier mode de réalisation. L'écrou 66 est vissé sur le filetage externe 22 de la pièce tubulaire 12 à son extrémité ouverte 20. Ainsi, la plaque 62 appuie sur l'extrémité 28 de la tige 24 et comprime le ressort à l'intérieur de la pièce tubulaire 12. De préférence, afin d'éviter un serrage trop important de l'écrou 66 qui pourrait provoquer une séparation accidentelle de la plaque 62 par rapport à cet écrou, on prévoit une butée mécanique 70 fixée sur la face externe de la pièce tubulaire 12.According to this embodiment, the fuse element which bears the reference 60 consists of a flat cover 62 which is fixed on one side lateral 64 of a nut 66. The connection between the lateral face 64 and the periphery of the inner face of the plate 62 is made using a layer of an adhesive material 68 which loses its adhesion properties at the predetermined temperature and which is the same nature as the material constituting the layer 46 of the first mode of production. The nut 66 is screwed onto the external thread 22 of the tubular piece 12 to its open end 20. Thus, the plate 62 bears on the end 28 of the rod 24 and compresses the spring inside the tubular part 12. Preferably, to avoid excessive tightening of the nut 66 which could cause a accidentally separating the plate 62 from this nut, provision is made for mechanical stop 70 fixed on the outer face of the tubular piece 12.

On comprend que, dans ce cas encore, le ressort 32 est entièrement confiné à l'intérieur de la pièce tubulaire 12 dont l'extrémité avant est pratiquement obturée par le rebord 16 et la tige 24 et dont l'extrémité arrière est obturée par la plaque 62.It is understood that, in this case again, the spring 32 is entirely confined inside the tubular piece 12 whose front end is substantially closed by the flange 16 and the rod 24 and whose rear end is closed by the plate 62.

En outre, dans ce mode de réalisation, l'encombrement transversal du système de déclenchement est réduit par rapport à celui du mode de réalisation de la figure 1 puisqu'il se limite au diamètre externe de l'écrou 66.In addition, in this embodiment, the transverse bulk of the triggering system is reduced compared to that of the embodiment of Figure 1 since it is limited to the outer diameter of the nut 66.

Les figures 5a et 5b montrent un exemple d'utilisation du système de déclenchement 10 à la réalisation d'une soupape de ventilation 80. Sur cette figure, on a représenté le corps 82 de la soupape qui constitue un siège 84 pour l'obturateur 86 de la soupape. L'obturateur 86 est fixé à l'extrémité 26 de la tige 24 du système de déclenchement. Le corps 82 de la soupape est équipé d'un système de fixation et de positionnement du système de déclenchement 10 qui comprend de préférence des bras rayonnants 88 reliant le corps 82 à un moyeu axial fileté 90. La pièce tubulaire 12 du système de déclenchement 10 qui comporte dans ce cas le filetage externe 22 est vissée dans le moyeu axial taraudé 90 de la soupape. Un contre-écrou 92 vissé sur le filetage externe 22 de la pièce tubulaire permet de régler la position de la pièce tubulaire 12 par rapport au système de fixation 88.FIGS. 5a and 5b show an example of use of the system of triggering 10 to the realization of a ventilation valve 80. In this figure, the body 82 of the valve is shown which constitutes a seat 84 for shutter 86 of the valve. The shutter 86 is attached to the end 26 of the rod 24 trigger system. The body 82 of the valve is equipped with a system fixing and positioning of the trigger system 10 which comprises preferably radiating arms 88 connecting the body 82 to a threaded axial hub 90. The tubular part 12 of the triggering system 10 which in this case comprises the external thread 22 is screwed into the threaded axial hub 90 of the valve. A against-nut 92 screwed on the external thread 22 of the tubular part allows adjust the position of the tubular piece 12 relative to the fastening system 88.

Il va de soi que le système de déclenchement à élément fusible selon l'invention peut avoir d'autres utilisations. Notamment, l'extrémité 26 de la tige 24 peut constituer un verrou escamotable pour maintenir en position de repos une pièce, par exemple un volet, montée pivotante autour d'un axe parallèle à la tige 24 et soumise à l'action d'un ressort de rappel. Sous l'effet de la température, la tige 24 s'escamote et autorise la rotation de la pièce.It goes without saying that the trigger system with fuse element according to the invention may have other uses. In particular, the end 26 of the stem 24 may constitute a retractable latch to maintain in the rest position a piece, for example a shutter, pivotally mounted about an axis parallel to the rod 24 and subjected to the action of a return spring. Under the effect of the temperature, the rod 24 is retracted and allows rotation of the part.

Claims (9)

  1. Activation system with a fuse element, comprising:
    a tubular element (12) comprising a first end provided with first means forming a stop (14) and with an opening (18) and a second open end;
    a rod (24) mounted so as to be mobile along the axis of said tubular element having a first end (26) that projects out of said opening and a second end (28) provided with second means (30) forming a mechanical stop;
    a spring (32) mounted in the tubular element around said rod having a first end bearing against the first means forming a stop and a second end bearing against the second means forming a stop; and
    a fuse element (40, 60), said system being characterised in that
    said fuse element comprises a first part (42, 62) connected mechanically to a second part (44, 66) by a material (46, 68) that is fusible at a predetermined temperature; and
    in that said system further comprises:
    means (52) for mechanically connecting the first part (42) of the fuse element to the second end of said tubular element (12); and
    means (54) for causing the second part (44) of the fuse element to co-operate mechanically with the second end of said rod, by which said spring is kept compressed at least partly inside said tubular element.
  2. Activation system according to Claim 1, characterised in that said spring (32) is entirely inside said tubular element (12) when the fuse element (40) is intact.
  3. Activation system according to Claim 2, characterised in that when the fuse element (40) is intact, the second means forming a stop (30) or said second part (62) of the fuse element (60) substantially seals the second end of the tubular element (12).
  4. Activation system according to any one of Claims 1 to 3, characterised in that the two parts (44, 46) constituting the fuse element are each provided with a hole and in that the mechanical connection means comprise a first leg (52) integral with the second end of the tubular element (12), the free end of which penetrates into the hole of the second part of the fuse element and in that the mechanical co-operation means comprise a second leg (54) integral with the second end of the rod (24) and the free end of which penetrates into the hole of the first part of the fuse element.
  5. Activation system according to Claim 4, characterised in that the second means forming a stop consist of a washer (30) integral with the second end of the rod (24), said washer substantially sealing the second end of the tubular element when the fuse element is intact.
  6. Activation system according to any one of Claims 1 to 3, characterised in that the second part of the fuse element (60) consists of a nut (66); in that the mechanical connection means comprise a threading (22) on the outermost face of the second end of the tubular element, on which the nut is mounted, in that the first part of the fuse element consists of a cover (62) fixed to the lateral face of the nut by said fusible material (68) and in that the mechanical co-operation means consist of the fact that the second end of said rod (12) is bearing against the inner face of said cover.
  7. Activation system according to Claim 6, characterised in that said tubular element (12) further comprises, on its outer face near its second end, a mechanical stop (70) to limit the screwing of the nut on the threaded portion of the tubular element.
  8. Activation system according to any one of Claims 1 to 7, characterised in that said rod (24) is in a single part.
  9. Activation system according to any one of Claims 1 to 8, characterised in that said tubular element (12) comprises an outer threading (22) for adjusting the position of said system.
EP00400434A 1999-02-17 2000-02-16 Triggering system with fusible element Expired - Lifetime EP1029559B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9901912 1999-02-17
FR9901912A FR2789746B1 (en) 1999-02-17 1999-02-17 FUSE FIRE TRIGGERING SYSTEM

Publications (2)

Publication Number Publication Date
EP1029559A1 EP1029559A1 (en) 2000-08-23
EP1029559B1 true EP1029559B1 (en) 2005-08-31

Family

ID=9542126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00400434A Expired - Lifetime EP1029559B1 (en) 1999-02-17 2000-02-16 Triggering system with fusible element

Country Status (5)

Country Link
EP (1) EP1029559B1 (en)
AT (1) ATE303181T1 (en)
DE (1) DE60022244T2 (en)
ES (1) ES2248025T3 (en)
FR (1) FR2789746B1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1061548A (en) * 1965-07-22 1967-03-15 Gustaf Harald Bodin Improvements in or relating to valve devices for ventilation ducts
US4055829A (en) * 1975-03-03 1977-10-25 Elsie Manufacturing Company Fusible links and process for producing same
FR2372360A1 (en) * 1976-11-18 1978-06-23 Mineur Becourt HIGH REACTION SPEED VALVE SHUTTER DEVICE
DE2652879A1 (en) * 1976-11-20 1978-05-24 Eidmann Juergen FIRE VALVE
US5120152A (en) * 1990-06-25 1992-06-09 Carmen Gueli Fusible link
GB2249479B (en) * 1990-10-19 1994-12-14 Gilberts Fire damper

Also Published As

Publication number Publication date
DE60022244D1 (en) 2005-10-06
FR2789746B1 (en) 2001-05-04
EP1029559A1 (en) 2000-08-23
DE60022244T2 (en) 2006-06-29
ATE303181T1 (en) 2005-09-15
ES2248025T3 (en) 2006-03-16
FR2789746A1 (en) 2000-08-18

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