EP0305436B1 - Driving element with a thin part, ductile in the direction of its thickness - Google Patents

Driving element with a thin part, ductile in the direction of its thickness Download PDF

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Publication number
EP0305436B1
EP0305436B1 EP88902155A EP88902155A EP0305436B1 EP 0305436 B1 EP0305436 B1 EP 0305436B1 EP 88902155 A EP88902155 A EP 88902155A EP 88902155 A EP88902155 A EP 88902155A EP 0305436 B1 EP0305436 B1 EP 0305436B1
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EP
European Patent Office
Prior art keywords
disc
actuation element
element according
arm
thin
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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EP88902155A
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German (de)
French (fr)
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EP0305436A1 (en
Inventor
Concept S.A. Delta
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Delta Concept SAS
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Delta Concept SAS
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Priority to AT88902155T priority Critical patent/ATE98399T1/en
Publication of EP0305436A1 publication Critical patent/EP0305436A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/26—Snap-action arrangements depending upon deformation of elastic members
    • H01H13/48—Snap-action arrangements depending upon deformation of elastic members using buckling of disc springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/30—Energy stored by deformation of elastic members by buckling of disc springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
    • H01H2037/549—Details of movement transmission between bimetallic snap element and contact

Definitions

  • the present invention relates to an actuating element intended to establish an electrical contact.
  • Document DE-B-1 060 456 describes an electrical switch which comprises a thin blade which is deformable in the direction of its thickness and placed between two opposite supports, so as to occupy two arched extreme positions situated on either side of a median plane.
  • This blade is provided with a tab fixed on one of its faces and the outer end of which moves away from or approaches the central part of this blade during its deformation, so that the amplitude of the movement of the free end of the tab is greater than the amplitude of deformation of the blade.
  • this blade carries an electrical contact at its end.
  • the actuating element comprises a thin piece deformable in the direction of its thickness so as to occupy two arcuate extreme positions situated on either side of a median plane and provided at least one attached lug and intended to establish an electrical contact, the amplitude of movement of the free end of this lug being greater than the amplitude of deformation of said part, the outer end of this lug being fixed on one of the faces of said thin piece and its free end moving away from or approaching, on one side, the central part of said thin piece during the deformation of the latter.
  • said thin part is a disc, the edge of this disc and the free end of said tab being respectively in contact between a support and a member to be actuated sliding and acting on at least one electrical contact.
  • the aforementioned disc can be provided with at least two opposite tabs.
  • the aforementioned disc is elastically deformable.
  • the above-mentioned disc consists of a circular bimetallic strip.
  • the actuating element can comprise at least one stack comprising at least two discs provided with at least two opposite tabs, the free ends of the tabs of one of the discs being supported on the free ends of the other tab.
  • the actuating element can comprise a multiplicity of lugs integral with a crown fixed to the aforementioned disc.
  • the aforementioned disc may have a central passage, said tab extending substantially to the edge of this passage.
  • said tab can be constituted by a bimetallic strip deforming in the direction of the thickness of the aforementioned disc and in the same direction.
  • an actuating element has generally been represented by the reference 1 which comprises a thin piece 2 in the form of a disc which is made of an elastically deformable material, in the direction of its thickness, so as to occupy a first stable, arched or curved position visible in FIG. 2 and a second unstable position visible in FIG. 3 in which it is arched or curved on the other side of its median plane, this thin piece 2 is adapted to pass from its stable position to its unstable position for example by pressing on its central part and return to its stable position by the fact of its elasticity.
  • the maximum amplitude of movement of this thin disc-shaped piece 2 corresponds to the amplitude of the displacement of its central part.
  • the actuating element 1 further comprises two opposite tabs 3 and 4 which extend radially to the disc 2 and whose outer end is fixed to the concave face 5 of this disc 2 when the latter is in its stable position visible on Figure 2, via rivets 6 and 7, these tabs 3 and 4 extending towards each other along the face 5 so that their adjacent ends 8 and 9 are located in the part center of the thin disc-shaped piece 2.
  • the actuating element 10 comprises a thin disc-shaped piece 11 consisting of two discs 12 and 13 joined together so as to constitute a bimetallic strip capable of deforming depending on the temperature in the direction of its thickness in a slow or rapid manner .
  • the actuating element 10 further comprises two opposite tabs 14 and 15 which are fixed, as in the previous example, on one of the faces of the thin disc-shaped piece 11 and which, this time, are each constituted by two blades 16, 17 and 18, 19 joined so as to constitute bimetallic strips capable of deforming as a function of the temperature in the thickness direction of the thin disc-shaped piece 11 and in the same direction.
  • the outer ends of the two legs 14 and 15 are fixed to the thin disc-shaped part 11 by gluing.
  • the peripheral edge of the thin disc-shaped part 11 is supported on the cover 20 of a switch box 21 and the free ends of the tabs 14 and 15 are pressed against the end of a pusher 22 adapted for slide in the housing 21 in the thickness direction of the thin disc-shaped piece 11.
  • the other end of this pusher 22 is capable of moving the movable element 23 of a switch generally identified by the reference 24 and mounted in the housing 21, against a spring 25.
  • the actuating element 10 deforms so as to pass from its position visible in FIG. 4 to its position visible in FIG. 5 or vice versa, these changes in position corresponding to changes in position of the actuating element 1 seen previously with reference to FIGS. 2 and 3, with an increase in the amplitude of movement of the thin piece 11 in the form of a disc thanks to the provision of opposite tabs 14 and 15.
  • the deformations of the lugs 14 and 15 made up of bimetallic strips also amplify the deformation of the thin disc-shaped piece 11. In doing so, the deformation of the actuating element 10 causes the actuation of the switch 24, in the direction of its opening or closing, by displacement of its movable member 23 via the pusher 22.
  • an actuating element generally identified by the reference 26 which comprises a thin disc-shaped piece 27 constituting as before a bimetallic strip, on the one of the faces of which is fixed a crown 28 by means of four rivets 29, this crown being provided with four regularly distributed tabs 30 which extend radially towards the central part of the thin disc-shaped part 27 and whose interior free ends 31 go to the edge of a central passage 32 provided in the thin disc-shaped part 27.
  • This actuating element 26 is adapted to deform in the same way as the actuating elements 1 and 10 described previously.
  • FIG. 7 we see that there is shown a stack of four actuating elements 26, in pairs, so that the free ends 31 of the tabs 30 between two adjacent discs are supported on each other and that the peripheral edges of the thin disc-shaped pieces 27 of the two actuating elements 26 of the end of the stack are supported one on a support 33 and the other on a plate 34 connected to a rod to be actuated 35 which extends through the central passages 32 of the four stacked actuating elements 26 and through the support 33, the actuating elements 26 extending around the rod 35 and being centered and guided by the latter .
  • the four actuating elements 26 deform in the direction of their thickness as we have already seen previously and allow the movement of the plate 34 and consequence of the rod 35 relative to the support 33, the amplitude of this displacement corresponding to the addition of the amplitude of the deformations of the four stacked actuating elements 26.
  • the effect of the legs associated with the thin piece deformable in the direction of its thickness could be achieved with thin pieces of different shapes and in particular with thin pieces in the form of strips, for example rectangular elastically deformable or constituting bimetallic strips.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Thermally Actuated Switches (AREA)
  • Push-Button Switches (AREA)
  • Prostheses (AREA)
  • Switches With Compound Operations (AREA)
  • Adornments (AREA)
  • Transmission Devices (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Pens And Brushes (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

PCT No. PCT/FR88/00110 Sec. 371 Date Oct. 26, 1988 Sec. 102(e) Date Oct. 26, 1988 PCT Filed Feb. 26, 1988 PCT Pub. No. WO88/06799 PCT Pub. Date Sep. 7, 1988.Driving element (1) comprising a thin part (2) provided with a zone, ductile in the direction of its thickness in such a way as to occupy at least two positions, in at least one of which said zone is arc-shaped, at least one tab (3,4) fixed at one end to a face of said ductile zone and extending towards the central part of the zone in such a way that, when the zone is moulded, the free end (8,9) of said tab moves away from or towards the face (5) of said thin part, the resulting amplitude of the movement of the free end of the tab being greater than the amplitude of ductility of the thin piece.

Description

La présente invention concerne un élément d'actionnement destiné à établir un contact électrique.The present invention relates to an actuating element intended to establish an electrical contact.

Le document DE-B-1 060 456 décrit un interrupteur électrique qui comprenant une lame mince déformable dans le sens de son épaisseur et placée entre deux support opposés, de manière à occuper deux positions extrêmes arquées situées de part et d'autre d'un plan médian. Cette lame est munie d'une patte fixée sur l'une de ses faces et dont l'extrémité extérieure s'éloigne ou se rapproche de la partie centrale de cette lame lors de sa déformation, de telle sorte que l'amplitude du mouvement de l'extrémité libre de la patte est plus grande que l'amplitude de déformation de la lame. En outre, cette lame porte à son extrémité un contact électrique.Document DE-B-1 060 456 describes an electrical switch which comprises a thin blade which is deformable in the direction of its thickness and placed between two opposite supports, so as to occupy two arched extreme positions situated on either side of a median plane. This blade is provided with a tab fixed on one of its faces and the outer end of which moves away from or approaches the central part of this blade during its deformation, so that the amplitude of the movement of the free end of the tab is greater than the amplitude of deformation of the blade. In addition, this blade carries an electrical contact at its end.

Tel qu'il est revendiqué, l'élément d'actionnement selon l'invention comprend une pièce mince déformable dans le sens de son épaisseur de manière à occuper deux positions extrêmes arquées situées de part et d'autre d'un plan médian et munie d'au moins une patte rapportée et destinée à établir un contact électrique, l'amplitude du mouvement de l'extrémité libre de cette patte étant plus grande que l'amplitude de déformation de ladite pièce, l'extrémité extérieure de cette patte étant fixée sur l'une des faces de ladite pièce mince et son extrémité libre s'éloignant ou se rapprochant, d'un côté, de la partie centrale de ladite pièce mince lors de la déformation de cette dernière.As claimed, the actuating element according to the invention comprises a thin piece deformable in the direction of its thickness so as to occupy two arcuate extreme positions situated on either side of a median plane and provided at least one attached lug and intended to establish an electrical contact, the amplitude of movement of the free end of this lug being greater than the amplitude of deformation of said part, the outer end of this lug being fixed on one of the faces of said thin piece and its free end moving away from or approaching, on one side, the central part of said thin piece during the deformation of the latter.

Selon l'invention, ladite pièce mince est un disque, le bord de ce disque et l'extrémité libre de ladite patte étant respectivement en appui entre un support et un organe à actionner coulissant et agissant sur au moins un contact électrique.According to the invention, said thin part is a disc, the edge of this disc and the free end of said tab being respectively in contact between a support and a member to be actuated sliding and acting on at least one electrical contact.

Selon l'invention, le disque précité peut être muni d'au moins deux pattes opposées.According to the invention, the aforementioned disc can be provided with at least two opposite tabs.

Selon une variante de l'invention, le disque précité est déformable élastiquement.According to a variant of the invention, the aforementioned disc is elastically deformable.

Selon une autre variante de l'invention, le disque précité est constitué par une bilame circulaire.According to another variant of the invention, the above-mentioned disc consists of a circular bimetallic strip.

Selon l'invention, l'élément d'actionnement peut comprendre au moins un empilage comprenant au moins deux disques munis d'au moins deux pattes opposées, les extrémités libres des pattes de l'un des disques étant en appui sur les extrémités libres de l'autre patte.According to the invention, the actuating element can comprise at least one stack comprising at least two discs provided with at least two opposite tabs, the free ends of the tabs of one of the discs being supported on the free ends of the other tab.

Selon l'invention, l'élément d'actionnement peut comprendre une multiplicité de pattes solidaires d'une couronne fixée sur le disque précité.According to the invention, the actuating element can comprise a multiplicity of lugs integral with a crown fixed to the aforementioned disc.

Selon l'invention, le disque précité peut présenter un passage centrale, ladite patte s'étendant sensiblement jusqu'au bord de ce passage.According to the invention, the aforementioned disc may have a central passage, said tab extending substantially to the edge of this passage.

Selon l'invention, ladite patte peut être constituée par une bilame se déformant dans le sens de l'épaisseur du disque précité et dans le même sens.According to the invention, said tab can be constituted by a bimetallic strip deforming in the direction of the thickness of the aforementioned disc and in the same direction.

La présente invention sera mieux comprise à l'étude d'éléments d'actionnement décrits à titre d'exemples non limitatifs et illustrés par le dessin sur lequel :

  • la figure 1 représente en vue de dessus un premier élément d'actionnement selon la présente invention ;
  • la figure 2 représente une coupe de l'élément d'actionnement de la figure 1 dans une première position ;
  • la figure 3 représente une coupe de l'élément d'actionnement de la figure 1 dans une seconde position ;
  • la figure 4 représente, en coupe, un autre élément d'actionnement selon la présente invention, dans une première position, monté dans un boîtier d'interrupteur;
  • la figure 5 représente, en coupe, l'élément d'actionnement de la figure 4, dans une seconde position;
  • la figure 6 représente, en vue de dessus, un autre élément d'actionnement selon la présente invention;
  • et la figure 7 représente, en coupe, un empilage de plusieurs éléments d'actionnement semblables à celui de la figure 6.
The present invention will be better understood from the study of actuating elements described by way of nonlimiting examples and illustrated by the drawing in which:
  • Figure 1 shows a top view of a first actuating element according to the present invention;
  • 2 shows a section of the actuating member of Figure 1 in a first position;
  • Figure 3 shows a section through the actuator of Figure 1 in a second position;
  • Figure 4 shows, in section, another actuating element according to the present invention, in a first position, mounted in a switch housing;
  • Figure 5 shows, in section, the actuating element of Figure 4, in a second position;
  • Figure 6 shows, in top view, another actuating element according to the present invention;
  • and FIG. 7 represents, in section, a stack of several actuating elements similar to that of FIG. 6.

En se reportant aux figures 1 à 3, on voit qu'on a représenté un élément d'actionnement d'une manière générale par la référence 1 qui comprend une pièce mince 2 en forme de disque qui est en un matériau déformable élastiquement, dans le sens de son épaisseur, de manière à occuper une première position stable arquée ou bombée visible sur la figure 2 et une deuxième position instable visible sur la figure 3 dans laquelle elle est arquée ou bombée de l'autre côté de son plan médian cette pièce mince 2 est adaptée pour passer de sa position stable à sa position instable par exemple en appuyant sur sa partie centrale et revenir à sa position stable par le fait de son élasticité. Il en résulte que l'amplitude maximum du mouvement de cette pièce mince 2 en forme de disque correspond à l'amplitude du déplacement de sa partie centrale.Referring to FIGS. 1 to 3, it can be seen that an actuating element has generally been represented by the reference 1 which comprises a thin piece 2 in the form of a disc which is made of an elastically deformable material, in the direction of its thickness, so as to occupy a first stable, arched or curved position visible in FIG. 2 and a second unstable position visible in FIG. 3 in which it is arched or curved on the other side of its median plane, this thin piece 2 is adapted to pass from its stable position to its unstable position for example by pressing on its central part and return to its stable position by the fact of its elasticity. As a result, the maximum amplitude of movement of this thin disc-shaped piece 2 corresponds to the amplitude of the displacement of its central part.

L'élément d'actionnement 1 comprend en outre deux pattes opposées 3 et 4 qui s'étendent radialement au disque 2 et dont leur extrémité extérieure est fixée sur la face concave 5 de ce disque 2 lorsque ce dernier est dans sa position stable visible sur la figure 2, par l'intermédiaire de rivets 6 et 7, ces pattes 3 et 4 s'étendant l'une vers l'autre le long de la face 5 de telle sorte que leurs extrémités adjacentes 8 et 9 sont situées dans la partie centrale de la pièce mince 2 en forme de disque.The actuating element 1 further comprises two opposite tabs 3 and 4 which extend radially to the disc 2 and whose outer end is fixed to the concave face 5 of this disc 2 when the latter is in its stable position visible on Figure 2, via rivets 6 and 7, these tabs 3 and 4 extending towards each other along the face 5 so that their adjacent ends 8 and 9 are located in the part center of the thin disc-shaped piece 2.

Lorsque la pièce mince 2 en forme de disque est déformée, comme on l'a vu précédemment, de sa position stable visible sur la figure 2 jusqu'à sa position instable visible sur la figure 3, et inversement, les extrémités libres 8 et 9 des pattes 3 et 4 s'éloignent de la face 5 de la pièce mince 2 en forme de disque sur laquelle elles sont fixées, et inversement. Il s'ensuit que l'amplitude résultante du mouvement des extrémités libres 8 et 9 des pattes opposées 3 et 4 est plus grande que l'amplitude de déformation de la pièce mince 2 en forme de disque.When the thin disc-shaped piece 2 is deformed, as seen above, from its stable position visible in FIG. 2 to its unstable position visible in FIG. 3, and conversely, the free ends 8 and 9 tabs 3 and 4 move away from the face 5 of the thin disc-shaped piece 2 on which they are fixed, and vice versa. It follows that the amplitude resulting from the movement of the free ends 8 and 9 of the opposite legs 3 and 4 is greater than the amplitude of deformation of the thin piece 2 in the form of a disc.

En se reportant maintenant aux figures 4 et 5, on va décrire une application d'un élément en forme de disque repéré d'une manière générale par la référence 10 qui est de structure équivalente à celle de l'élément d'actionnement 1 représenté sur les figures 1 à 3.Referring now to Figures 4 and 5, we will describe an application of a disc-shaped element generally identified by the reference 10 which is of equivalent structure to that of the actuating element 1 shown in Figures 1 to 3.

L'élément d'actionnement 10 comprend une pièce mince en forme de disque 11 constituée de deux disques 12 et 13 accolées de manière à constituer un bilame susceptible de se déformer en fonction de la température dans le sens de son épaisseur de manière lente ou rapide.The actuating element 10 comprises a thin disc-shaped piece 11 consisting of two discs 12 and 13 joined together so as to constitute a bimetallic strip capable of deforming depending on the temperature in the direction of its thickness in a slow or rapid manner .

L'élément d'actionnement 10 comprend en outre deux pattes opposées 14 et 15 qui sont fixées, comme dans l'exemple précédent, sur l'une des faces de la pièce mince en forme de disque 11 et qui, cette fois, sont chacune constituée par deux lames 16,17 et 18, 19 accolées de manière à constituer des bilames susceptibles de se déformer en fonction de la température dans le sens de l'épaisseur de la pièce mince en forme de disque 11 et dans le même sens. Dans cet exemple, les extrémités extérieures des deux pattes 14 et 15 sont fixées à la pièce mince en forme de disque 11 par collage.The actuating element 10 further comprises two opposite tabs 14 and 15 which are fixed, as in the previous example, on one of the faces of the thin disc-shaped piece 11 and which, this time, are each constituted by two blades 16, 17 and 18, 19 joined so as to constitute bimetallic strips capable of deforming as a function of the temperature in the thickness direction of the thin disc-shaped piece 11 and in the same direction. In this example, the outer ends of the two legs 14 and 15 are fixed to the thin disc-shaped part 11 by gluing.

Le bord périphérique de la pièce mince en forme de disque 11 est en appui sur le couvercle 20 d'un boîtier d'interrupteur 21 et les extrémités libres des pattes 14 et 15 sont en appui contre l'extrémité d'un poussoir 22 adapté pour coulisser dans le boîtier 21 dans le sens de l'épaisseur de la pièce mince en forme de disque 11. L'autre extrémité de ce poussoir 22 est susceptible de déplacer l'élément mobile 23 d'un interrupteur repéré d'une manière générale par la référence 24 et monté dans le boîtier 21, à l'encontre d'un ressort 25.The peripheral edge of the thin disc-shaped part 11 is supported on the cover 20 of a switch box 21 and the free ends of the tabs 14 and 15 are pressed against the end of a pusher 22 adapted for slide in the housing 21 in the thickness direction of the thin disc-shaped piece 11. The other end of this pusher 22 is capable of moving the movable element 23 of a switch generally identified by the reference 24 and mounted in the housing 21, against a spring 25.

Lors d'un changement de température, l'élément d'actionnement 10 se déforme de manière à passer de sa position visible sur la figure 4 à sa position visible sur la figure 5 ou inversement, ces changements de position correspondant aux changements de position de l'élément d'actionnement 1 vu précédemment en référence aux figures 2 et 3, avec accroissement de l'amplitude du mouvement de la pièce mince 11 en forme de disque grâce à la prévision des pattes opposées 14 et 15. A noter en outre que les déformations des pattes 14 et 15 constituées de bilames amplifient également la déformation de la pièce mince en forme de disque 11. Se faisant, la déformation de l'élément d'actionnement 10 provoque l'actionnement de l'interrupteur 24, dans le sens de son ouverture ou de sa fermeture, par déplacement de son organe mobile 23 par l'intermédiaire du poussoir 22.During a change in temperature, the actuating element 10 deforms so as to pass from its position visible in FIG. 4 to its position visible in FIG. 5 or vice versa, these changes in position corresponding to changes in position of the actuating element 1 seen previously with reference to FIGS. 2 and 3, with an increase in the amplitude of movement of the thin piece 11 in the form of a disc thanks to the provision of opposite tabs 14 and 15. Note further that the deformations of the lugs 14 and 15 made up of bimetallic strips also amplify the deformation of the thin disc-shaped piece 11. In doing so, the deformation of the actuating element 10 causes the actuation of the switch 24, in the direction of its opening or closing, by displacement of its movable member 23 via the pusher 22.

En se reportant maintenant à la figure 6, on voit qu'on a représenté un élément d'actionnement repéré d'une manière générale par la référence 26 qui comprend une pièce mince en forme de disque 27 constituant comme précédemment un bilame, sur l'une des faces de laquelle est fixée une couronne 28 par l'intermédiaire de quatre rivets 29, cette couronne étant munie de quatre pattes 30 régulièrement réparties qui s'étendent radialement vers la partie centrale de la pièce mince en forme de disque 27 et dont les extrémités libres intérieures 31 vont jusqu'au bord d'un passage central 32 prévu dans la pièce mince en forme de disque 27. Cet élément d'actionnement 26 est adapté pour se déformer de la même manière que les éléments d'actionnement 1 et 10 décrits précédemment.Referring now to Figure 6, we see that there is shown an actuating element generally identified by the reference 26 which comprises a thin disc-shaped piece 27 constituting as before a bimetallic strip, on the one of the faces of which is fixed a crown 28 by means of four rivets 29, this crown being provided with four regularly distributed tabs 30 which extend radially towards the central part of the thin disc-shaped part 27 and whose interior free ends 31 go to the edge of a central passage 32 provided in the thin disc-shaped part 27. This actuating element 26 is adapted to deform in the same way as the actuating elements 1 and 10 described previously.

En se reportant à la figure 7, on voit qu'on a représenté un empilage de quatre éléments d'actionnement 26, par paires, de telle sorte que les extrémités libres 31 des pattes 30 entre deux disques adjacents soient en appui les unes sur les autres et que les bords périphériques des pièces minces en forme de disque 27 des deux éléments d'actionnement 26 d'extrémité de l'empilage soient en appui l'une sur un support 33 et l'autre sur un plateau 34 relié à une tige à actionner 35 qui s'étend au travers des passages centraux 32 des quatre éléments d'actionnement empilés 26 et au travers du support 33, les éléments d'actionnement 26 s'étendant autour de la tige 35 et étant centrés et guidés par cette dernière. Lors d'un changement de température, les quatre éléments d'actionnement 26 se déforment dans le sens de leur épaisseur comme on l'a déjà vu précédemment et permettent le déplacement du plateau 34 et en conséquence de la tige 35 par rapport au support 33, l'amplitude de ce déplacement correspondant à l'addition de l'amplitude des déformations des quatres éléments d'actionnement 26 empilés.Referring to Figure 7, we see that there is shown a stack of four actuating elements 26, in pairs, so that the free ends 31 of the tabs 30 between two adjacent discs are supported on each other and that the peripheral edges of the thin disc-shaped pieces 27 of the two actuating elements 26 of the end of the stack are supported one on a support 33 and the other on a plate 34 connected to a rod to be actuated 35 which extends through the central passages 32 of the four stacked actuating elements 26 and through the support 33, the actuating elements 26 extending around the rod 35 and being centered and guided by the latter . During a temperature change, the four actuating elements 26 deform in the direction of their thickness as we have already seen previously and allow the movement of the plate 34 and consequence of the rod 35 relative to the support 33, the amplitude of this displacement corresponding to the addition of the amplitude of the deformations of the four stacked actuating elements 26.

Parailleurs, l'effet des pattes associées à la pièce mince déformable dans le sens de son épaisseur pourrait être atteint avec des pièces minces de formes différentes et en particulier avec des pièces minces en forme de lamelles par exemple rectangulaire déformables élastiquement ou constituant des bilames.Furthermore, the effect of the legs associated with the thin piece deformable in the direction of its thickness could be achieved with thin pieces of different shapes and in particular with thin pieces in the form of strips, for example rectangular elastically deformable or constituting bimetallic strips.

Claims (8)

  1. Actuation element (1; 10; 26) comprising a thin piece (2; 11; 27) which can be deformed in the direction of its thickness, so as to occupy two extreme arched positions situated on either side of a middle plane and which is fitted with at least one attached arm (3, 4; 14, 15; 31) intended to make an electrical contact, the amplitude of the movement of the free end of this arm being greater than the amplitude of deformation of the said piece, the outer end of this arm being fixed onto one of the faces of the said thin piece and its free end moving away from or towards, on one side, the central part of the said thin piece when the latter is deformed, characterized in that the said thin piece is a disc and in that the edge of this disc and the free end of the said arm bear respectively between a support (20; 33) and a member (22; 35) to be actuated which slides and acts on at least one electrical contact (24).
  2. Actuation element according to Claim 1, characterized in that the aforementioned disc is fitted with at least two opposite arms.
  3. Actuation element according to one of Claims 1 or 2, characterized in that the aforementioned disc is elastically deformable.
  4. Actuation element according to any one of the preceding claims, characterized in that the aforementioned disc consists of a circular bimetallic element.
  5. Actuation element according to any one of the preceding claims, characterized in that it comprises at least one stack comprising at least two discs fitted with at least two opposite arms, the free ends of the arms of one of the discs bearing on the free ends of the other arm.
  6. Actuation element according to any one of the preceding claims, characterized in that it comprises a multiplicity of arms integral with a ring (28) fixed onto the aforementioned disc.
  7. Actuation element according to any one of the preceding claims, characterized in that the aforementioned disc has a central passage (32), the said arm extending substantially as far as the edge of this passage.
  8. Actuation element according to any one of the preceding claims, characterized in that the said arm consists of a bimetallic element which deforms in the direction of the thickness of the aforementioned disc and in the same direction.
EP88902155A 1987-02-27 1988-02-26 Driving element with a thin part, ductile in the direction of its thickness Expired - Lifetime EP0305436B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88902155T ATE98399T1 (en) 1987-02-27 1988-02-26 ACTUATOR WITH A THIN, BANGING SNAP LINK.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8702685 1987-02-27
FR8702685A FR2611980B1 (en) 1987-02-27 1987-02-27 OPERATING ELEMENT HAVING A THIN PART DEFORMABLE IN THE MEANING OF ITS THICKNESS

Publications (2)

Publication Number Publication Date
EP0305436A1 EP0305436A1 (en) 1989-03-08
EP0305436B1 true EP0305436B1 (en) 1993-12-08

Family

ID=9348435

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88902155A Expired - Lifetime EP0305436B1 (en) 1987-02-27 1988-02-26 Driving element with a thin part, ductile in the direction of its thickness

Country Status (7)

Country Link
US (2) US4914415A (en)
EP (1) EP0305436B1 (en)
JP (1) JPH01502790A (en)
AT (1) ATE98399T1 (en)
DE (1) DE3886141T2 (en)
FR (1) FR2611980B1 (en)
WO (1) WO1988006799A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5123332A (en) * 1991-07-15 1992-06-23 Texas Instruments Incorporated Condition-responsive device with diaphragm protection means
DE19801251C2 (en) * 1998-01-15 2002-01-24 Inter Control Koehler Hermann Thermal switching element
US6629499B1 (en) * 2002-03-12 2003-10-07 The United States Of America As Represented By The Secretary Of The Navy Temperature activated mechanical timer
CN100446148C (en) * 2005-11-07 2008-12-24 徐佳义 A temperature controller with manual reset
ES2428507T3 (en) 2006-01-12 2013-11-08 Georg Emken Electric micro switch
JP6062815B2 (en) * 2012-08-09 2017-01-18 カルソニックカンセイ株式会社 Temperature switch and fluid heating device
JP6157856B2 (en) 2013-01-10 2017-07-05 カルソニックカンセイ株式会社 Heat sensing device
WO2016077850A1 (en) * 2014-11-21 2016-05-26 Antonyan, Armen Bimetallic thermal relay

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Publication number Priority date Publication date Assignee Title
NL39071C (en) * 1933-12-20
US2703231A (en) * 1951-04-05 1955-03-01 Robertshaw Fulton Controls Co Snap-action device
DE1060456B (en) * 1956-09-06 1959-07-02 Licentia Gmbh Electrical thermal bimetal switch
US3139500A (en) * 1960-03-02 1964-06-30 Wilcolator Co Thermally actuated double throw switch mechanism
GB1169229A (en) * 1966-09-01 1969-10-29 Texas Instruments Italia Spa A Thermally Actuated Device Providing a Predetermined Series of Step Displacements of a Drive Element as a Function of Temperature
US4325047A (en) * 1980-04-09 1982-04-13 Aisin Seiki Kabushiki Kaisha Temperature responsive switch
US4367452A (en) * 1982-02-11 1983-01-04 Elmwood Sensors, Inc. Thermostatic switch construction
US4499448A (en) * 1983-02-18 1985-02-12 Grable Jack W Electric circuit interrupter

Also Published As

Publication number Publication date
DE3886141T2 (en) 1994-06-23
EP0305436A1 (en) 1989-03-08
US4914415A (en) 1990-04-03
FR2611980B1 (en) 1995-06-09
US4942381A (en) 1990-07-17
FR2611980A1 (en) 1988-09-09
DE3886141D1 (en) 1994-01-20
ATE98399T1 (en) 1993-12-15
WO1988006799A1 (en) 1988-09-07
JPH01502790A (en) 1989-09-21

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