EP0641003B1 - Electromagnetic relay with bi-stable contact - Google Patents

Electromagnetic relay with bi-stable contact Download PDF

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Publication number
EP0641003B1
EP0641003B1 EP19940410057 EP94410057A EP0641003B1 EP 0641003 B1 EP0641003 B1 EP 0641003B1 EP 19940410057 EP19940410057 EP 19940410057 EP 94410057 A EP94410057 A EP 94410057A EP 0641003 B1 EP0641003 B1 EP 0641003B1
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EP
European Patent Office
Prior art keywords
blade
electromagnetic relay
rocker
relay according
spring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19940410057
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German (de)
French (fr)
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EP0641003A1 (en
Inventor
Joel Fagnoul
Jean-Baptiste Tallier
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Schneider Electric SE
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Schneider Electric SE
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Publication of EP0641003A1 publication Critical patent/EP0641003A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/08—Indicators; Distinguishing marks

Definitions

  • the object of the invention is to provide a device operated by a contact tiltable bistable, and easily configurable as an electromagnetic relay from of a standard structure of a remote control switch.
  • control member comprises an articulated connecting rod on the pallet and the pendulum to form a permanent direct link, the point of articulation of the rod on the balance being offset relative to the axis of tilting.
  • the elastic return device comprises a pair of compression springs acting on the underside of the pallet, and extending parallel to each other and to the rod in a direction substantially perpendicular to the pallet, the two springs having characteristics of different length and stiffness, one of the springs acting before the other.
  • a contact position indicator is integrated inside the manually operated test button.
  • the indicator is composed of an optical prism cooperating with a probe integral with the pallet, the probe having two signaling marks arranged alternately opposite the inclined face of the prism according to the position drawn or moved away from the pallet.
  • FIG. 1 is an elevation view of the electromagnetic relay according to the invention, shown in the OFF position when the electromagnet is not supplied.
  • Figure 2 is an identical view to Figure 1, the relay being equipped with a device additional with test button and contact position indicator.
  • Figure 3 is a sectional view along line 3-3 of Figure 2.
  • Figure 4 shows a partial view of Figure 2, showing the indicator in ON position of the relay following energization of the electromagnet.
  • Figure 5 is a sectional view along line 5-5 of Figure 4.
  • Figure 6 shows a partial view of Figure 2, after pressing the button test.
  • Figure 7 is a sectional view along line 7-7 of Figure 6.
  • the changeover relay 10 is housed in a housing 12 in molded insulating material containing an electromagnet 14, a control mechanism 16, and an electrical power circuit 18 having a movable contact 20 tilting cooperating with two fixed contacts 22, 24.
  • the fixed contact 22 is connected to a first terminal 26, and the other fixed contact 24 of the change-over relay 10 is connected to a second terminal 28, the two terminals 26, 28 being located on the same side of the case 12.
  • the movable contact 20 is equipped with a contact arm 30 pivotally mounted on a articulation 32 with knife, arranged at the end of a rigid conductor 34, of which the other end is connected to a third terminal 36.
  • the contact arm 30 is associated with a spring 38 in the form of an elastic blade making the movable contact 20 bistable.
  • the third terminal 36 is located opposite the other two terminals 26, 28.
  • the electromagnet 14 comprises a ferromagnetic pallet 38 pivotally mounted on the left side of the cylinder head 40, and a biasing spring 42 cooperates with the pallet 38 in the vicinity of the articulation zone 43 to ensure minimum clearance during the pivoting movement.
  • the control mechanism 16 comprises a balance 44 pivotally mounted on an axis 46 fixed between two extreme angular positions, and a connecting rod 48 articulated at one of its ends on the pallet 38, and at its other end on the balance 44.
  • the articulation point 50 of the link 48 on the balance 44 is offset from the tilting axis 46.
  • the pendulum 44 has a U-shape having a central recess 52 in which is engaged the end of the contact arm 30.
  • the pallet 38 moves the pendulum 44 from one position to the other at each operation cycle of the pallet 38 depending on whether the electromagnet 14 goes from the excitation state to the rest state, or vice versa.
  • the pallet 38 In the idle state of the electromagnet 14 corresponding to the absence of excitation of its coil, the pallet 38 is kept apart from the pole surface 54 of the cylinder head 40 thanks to an elastic return device 56 arranged between the housing 12 and a portion of the palette.
  • the return device 56 comprises a pair of springs 58.60 compression bearing on protrusions 62 of the housing 12, and acting directly on the underside of the pallet 38 in the spacing direction.
  • the movable contact 20, is in abutment against the upper fixed contact 24 in the position shown in Figure 1.
  • the two springs 58, 60 extend parallel to each other in a direction perpendicular to the pallet 38.
  • the pallet 38 When the electromagnet 14 is energized, the pallet 38 is attracted against the surface pole 54, and the link 48 causes the rocker 44 to tilt so as to drive the movable contact 20 to the fixed contact 22 lower.
  • the modulation of the return force by the two springs 58, 60 allows an optimal accumulation of the excess energy supplied by the electromagnet 14 during the attraction of the pallet 38.
  • the spring 58 on the left located between the articulation zone 43 of the pallet 38 and the other spring 60 on the right, is used to detach the contacts 20, 22 when the arm of contact 30 pivots anti-clockwise.
  • Spring 58 le shorter has a higher hardness than the longer spring 60.
  • the relaxation of first spring 58 on the left is used to break the micro-welds, while the other spring 60 on the right ensures the complete spacing of the pallet 38, and the tilting of the movable contact 20 towards the other stable state pressing against the contact fixed 24 upper.
  • Figures 2 to 5 show the change-over relay 10 of Figure 1 additionally equipped a test button 70 in front of which an indicator 72 for the position of the contacts 20, 22; 20, 24.
  • the manually operated test button 70 passes through an orifice 74 passage formed in the front face 76 of the housing 12, and is used to actuate mechanically the pallet 38 in the direction of approximation with the pole surface 54, so as to transmit a rocking movement to the balance 44, and from this changes the state of the moving contact 20 following each depression of the test button 70.
  • an optical prism 78 cooperating with a position probe 80 integral with the pallet 38.
  • the probe 80 carries a first colored marker 82 which moves in translation along the prism 78 while occupying two extreme positions depending on the location of the pallet 38.
  • test button 70, the prism 78, the probe 80 and a return spring 86 are mounted in a support 88 secured to the housing 12.
  • the support 88 carries a second color marker 84 different in color from the first marker 82.
  • the contacts 20, 22 of the first series of contacts are open, and the other contacts 20, 24 of the second series are closed.
  • the first benchmark 82 of the probe 80 is arranged opposite the inclined face of the prism 78, which reflects the coloring of the first marker 82 towards the head of the prism 78.
  • test button 70 is not pressed, and permanently protrudes by the action of the return spring of the type compression 86.
  • the manual depressing of the test button 70 in the orifice 74 causes the forced tilting of the rocker 44, and the change of state contacts.
  • the signaling given by the indicator 72 is not correct, but remains invisible since the operator hides the prism head 78 as long as his finger pushes on the test button 70.
  • indicator 72 and the test button 70 could be arranged differently without departing from the scope of the invention.
  • a variant consists in particular of use an elongated prism and a probe with two different color markers. When the electromagnet is activated the indicator moves and shows its second color 92.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Measuring Leads Or Probes (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Description

L'invention est relative à un relais électromagnétique logé dans un boítier isolant renfermant :

  • un électro-aimant à palette ferromagnétique pivotante,
  • un mécanisme de commande à balancier monté à basculement sur un axe entre deux positions angulaires extrêmes,
  • un organe de commande solidaire de la palette et coopérant avec le balancier pour le déplacer d'une position vers l'autre à chaque cycle de manoeuvre de la palette,
  • un circuit électrique de puissance ayant un contact basculant bistable entraíné par le balancier , et coopérant avec au moins un contact fixe,
  • et un dispositif élastique de rappel de la palette vers la position écartée dans l'état de repos de l'électroaimant.
The invention relates to an electromagnetic relay housed in an insulating housing containing:
  • an electromagnet with a pivoting ferromagnetic paddle,
  • a pendulum control mechanism mounted to tilt on an axis between two extreme angular positions,
  • a control member secured to the pallet and cooperating with the balance to move it from one position to the other at each cycle of operation of the pallet,
  • an electric power circuit having a bistable rocking contact driven by the pendulum, and cooperating with at least one fixed contact,
  • and an elastic device for returning the pallet to the separated position in the resting state of the electromagnet.

Un appareil de ce type est déjà décrit dans le document FR-A-2.676.590 de la demanderesse. Un changement d'état des contacts intervient à chaque impulsion de courant appliquée à la bobine de l'électroaimant grâce à l'intervention d'un organe de commande coopérant avec le balancier. Cet organe de commande est formé par un simple poussoir fixé à la palette. Un tel montage ne constitue pas une liaison mécanique directe et permanente avec le balancier, et l'appareil fonctionne uniquement en mode télérupteur.An apparatus of this type is already described in document FR-A-2,676,590 of the plaintiff. A change of state of the contacts occurs at each pulse of current applied to the solenoid coil through the intervention of an organ control cooperating with the pendulum. This control member is formed by a simple pusher attached to the pallet. Such an arrangement does not constitute a connection direct and permanent mechanical with the pendulum, and the device works only in remote control mode.

L'objet de l'invention consiste à réaliser un appareil manoeuvré par un contact basculant bistable, et facilement configurable en relais électromagnétique à partir d'une structure standard de télérupteur.The object of the invention is to provide a device operated by a contact tiltable bistable, and easily configurable as an electromagnetic relay from of a standard structure of a remote control switch.

Selon l'invention, l'organe de commande comporte une biellette de liaison articulée sur la palette et le balancier pour former une liaison directe permanente, le point d'articulation de la biellette sur le balancier étant décalé par rapport à l'axe de basculement. According to the invention, the control member comprises an articulated connecting rod on the pallet and the pendulum to form a permanent direct link, the point of articulation of the rod on the balance being offset relative to the axis of tilting.

Le simple remplacement du poussoir par la biellette articulée à la palette et au balancier permet de transformer le télérupteur en un relais, notamment un contacteur.The simple replacement of the pusher by the link articulated to the pallet and the pendulum makes it possible to transform the remote control switch into a relay, in particular a contactor.

Selon une caractéristique de l'invention, le dispositif élastique de rappel comprend une paire de ressorts de compression agissant sur la face inférieure de la palette , et s'étendant parallèlement l'un à l'autre et à la biellette selon une direction sensiblement perpendiculaire à la palette, les deux ressorts ayant des caractéristiques de longueur et de raideur différentes, un des ressorts agissant avant l'autre.According to a characteristic of the invention, the elastic return device comprises a pair of compression springs acting on the underside of the pallet, and extending parallel to each other and to the rod in a direction substantially perpendicular to the pallet, the two springs having characteristics of different length and stiffness, one of the springs acting before the other.

Selon une autre caractéristique de l'invention, un indicateur de position des contacts est intégré à l'intérieur du bouton test à commande manuelle. L'indicateur est composé d'un prisme optique coopérant avec un palpeur solidaire de la palette, le palpeur ayant deux repères de signalisation disposés alternativement en regard de la face inclinée du prisme selon la position attirée ou écartée de la palette .According to another characteristic of the invention, a contact position indicator is integrated inside the manually operated test button. The indicator is composed of an optical prism cooperating with a probe integral with the pallet, the probe having two signaling marks arranged alternately opposite the inclined face of the prism according to the position drawn or moved away from the pallet.

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre d'un mode de réalisation de l'invention, donné à titre d'exemple non limitatif, et représenté aux dessins annexés, dans lesquels :Other advantages and characteristics will emerge more clearly from the description which follows of an embodiment of the invention, given by way of example not limiting, and shown in the accompanying drawings, in which:

La figure 1 est une vue en élévation du relais électromagnétique selon l'invention, représenté dans la position OFF lorsque l'électroaimant n'est pas alimenté.FIG. 1 is an elevation view of the electromagnetic relay according to the invention, shown in the OFF position when the electromagnet is not supplied.

La figure 2 est une vue identique de la figure 1, le relais étant équipé d'un dispositif additionnel à bouton test et à indicateur de la position des contacts.Figure 2 is an identical view to Figure 1, the relay being equipped with a device additional with test button and contact position indicator.

La figure 3 est une vue en coupe selon la ligne 3-3 de la figure 2.Figure 3 is a sectional view along line 3-3 of Figure 2.

La figure 4 montre une vue partielle de la figure 2, représentant l'indicateur en position ON du relais suite à l'excitation de l'électroaimant.Figure 4 shows a partial view of Figure 2, showing the indicator in ON position of the relay following energization of the electromagnet.

La figure 5 est une vue en coupe selon la ligne 5-5 de la figure 4.Figure 5 is a sectional view along line 5-5 of Figure 4.

La figure 6 représente une vue partielle de la figure 2, après enfoncement du bouton test.Figure 6 shows a partial view of Figure 2, after pressing the button test.

La figure 7 est une vue en coupe selon la ligne 7-7 de la figure 6. Figure 7 is a sectional view along line 7-7 of Figure 6.

En référence à la figure 1, le relais 10 inverseur est logé dans un boítier 12 en matériau isolant moulé renfermant un électroaimant 14, un mécanisme de commande 16, et un circuit électrique 18 de puissance ayant un contact mobile 20 basculant coopérant avec deux contacts fixes 22, 24. Le contact fixe 22 est relié à une première borne 26, et l'autre contact fixe 24 du relais 10 inverseur est connecté à une deuxième borne 28, les deux bornes 26, 28 étant situées d'un même côté du boítier 12.Referring to Figure 1, the changeover relay 10 is housed in a housing 12 in molded insulating material containing an electromagnet 14, a control mechanism 16, and an electrical power circuit 18 having a movable contact 20 tilting cooperating with two fixed contacts 22, 24. The fixed contact 22 is connected to a first terminal 26, and the other fixed contact 24 of the change-over relay 10 is connected to a second terminal 28, the two terminals 26, 28 being located on the same side of the case 12.

Le contact mobile 20 est équipé d'un bras de contact 30 monté à pivotement sur une articulation 32 à couteau, agencée à l'extrémité d'un conducteur rigide 34, dont l'autre extrémité est reliée à une troisième borne 36. Le bras de contact 30 est associé à un ressort 38 en forme de lame élastique rendant le contact mobile 20 bistable. La troisième borne 36 se trouve à l'opposé des deux autres bornes 26, 28.The movable contact 20 is equipped with a contact arm 30 pivotally mounted on a articulation 32 with knife, arranged at the end of a rigid conductor 34, of which the other end is connected to a third terminal 36. The contact arm 30 is associated with a spring 38 in the form of an elastic blade making the movable contact 20 bistable. The third terminal 36 is located opposite the other two terminals 26, 28.

L'électroaimant 14 comporte une palette 38 ferromagnétique montée à pivotement sur la partie gauche de la culasse 40, et un ressort 42 de polarisation coopère avec la palette 38 au voisinage de la zone d'articulation 43 pour assurer un jeu minimum pendant le mouvement de pivotement.The electromagnet 14 comprises a ferromagnetic pallet 38 pivotally mounted on the left side of the cylinder head 40, and a biasing spring 42 cooperates with the pallet 38 in the vicinity of the articulation zone 43 to ensure minimum clearance during the pivoting movement.

Le mécanisme de commande 16 comprend un balancier 44 monté à basculement sur un axe 46 fixe entre deux positions angulaires extrêmes, et une biellette 48 de liaison articulée à l'une de ses extrémités sur la palette 38, et à son autre extrémité sur la balancier 44. Le point d'articulation 50 de la biellette 48 sur le balancier 44 est décalé par rapport à l'axe 46 de basculement.The control mechanism 16 comprises a balance 44 pivotally mounted on an axis 46 fixed between two extreme angular positions, and a connecting rod 48 articulated at one of its ends on the pallet 38, and at its other end on the balance 44. The articulation point 50 of the link 48 on the balance 44 is offset from the tilting axis 46.

Le balancier 44 présente une forme en U ayant un évidement 52 central dans lequel est engagée l'extrémité du bras de contact 30. La palette 38 déplace le balancier 44 d'une position vers l'autre à chaque cycle de manoeuvre de la palette 38 selon que l'électroaimant 14 passe de l'état d'excitation vers l'état de repos, ou inversement.The pendulum 44 has a U-shape having a central recess 52 in which is engaged the end of the contact arm 30. The pallet 38 moves the pendulum 44 from one position to the other at each operation cycle of the pallet 38 depending on whether the electromagnet 14 goes from the excitation state to the rest state, or vice versa.

Dans l'état de repos de l'électroaimant 14 correspondant à l'absence d'excitation de sa bobine, la palette 38 est maintenue écartée de la surface polaire 54 de la culasse 40 grâce à un dispositif élastique de rappel 56 agencé entre le boítier 12 et une portion de la palette. Le dispositif de rappel 56 comporte une paire de ressorts 58,60 de compression prenant appui sur des protubérances 62 du boítier 12, et agissant directement sur la face inférieure de la palette 38 dans le sens de l'écartement. Le contact mobile 20, se trouve en appui contre le contact fixe 24 supérieur dans la position représentée à la figure 1. Les deux ressorts 58, 60 s'étendent parallèlement l'un à l'autre selon une direction perpendiculaire à la palette 38.In the idle state of the electromagnet 14 corresponding to the absence of excitation of its coil, the pallet 38 is kept apart from the pole surface 54 of the cylinder head 40 thanks to an elastic return device 56 arranged between the housing 12 and a portion of the palette. The return device 56 comprises a pair of springs 58.60 compression bearing on protrusions 62 of the housing 12, and acting directly on the underside of the pallet 38 in the spacing direction. The movable contact 20, is in abutment against the upper fixed contact 24 in the position shown in Figure 1. The two springs 58, 60 extend parallel to each other in a direction perpendicular to the pallet 38.

Lors de l'excitation de l'électroaimant 14, la palette 38 est attirée contre la surface polaire 54, et la biellette 48 provoque le basculement du balancier 44 de manière à entraíner le contact mobile 20 vers le contact fixe 22 inférieur. La modulation de l'effort de rappel par les deux ressorts 58, 60 permet une accumulation optimale de l'excédent d'énergie fournie par l'électroaimant 14 au cours de l'attraction de la palette 38.When the electromagnet 14 is energized, the pallet 38 is attracted against the surface pole 54, and the link 48 causes the rocker 44 to tilt so as to drive the movable contact 20 to the fixed contact 22 lower. The modulation of the return force by the two springs 58, 60 allows an optimal accumulation of the excess energy supplied by the electromagnet 14 during the attraction of the pallet 38.

Après interruption de l'excitation de l'électroaimant 14, les forces d'attraction magnétique dans l'entrefer entre la surface polaire 54 et la palette 38 disparaissent, et l'énergie mécanique accumulée dans les ressorts 58, 60 est restituée de la manière suivante :After interruption of the excitation of the electromagnet 14, the forces of attraction magnetic in the air gap between the pole surface 54 and the pallet 38 disappear, and the mechanical energy accumulated in the springs 58, 60 is restored in the manner next :

Le ressort 58 de gauche, situé entre la zone d'articulation 43 de la palette 38 et l'autre ressort 60 de droite, sert à décoller les contacts 20, 22 lorsque le bras de contact 30 pivote dans le sens inverse des aiguilles d'une montre. Le ressort 58 le plus court a une dureté supérieure à celle du ressort 60 plus long. La détente du premier ressort 58 de gauche est utilisée pour briser les micro-soudures, tandis que l'autre ressort 60 de droite assure l'écartement complet de la palette 38, et le basculement du contact mobile 20 vers l'autre état stable en appui contre le contact fixe 24 supérieur.The spring 58 on the left, located between the articulation zone 43 of the pallet 38 and the other spring 60 on the right, is used to detach the contacts 20, 22 when the arm of contact 30 pivots anti-clockwise. Spring 58 le shorter has a higher hardness than the longer spring 60. The relaxation of first spring 58 on the left is used to break the micro-welds, while the other spring 60 on the right ensures the complete spacing of the pallet 38, and the tilting of the movable contact 20 towards the other stable state pressing against the contact fixed 24 upper.

Dans chaque état stable du contact mobile 20, on remarque qu'il existe un jeu prédéterminé entre le bras de contact 30 et le bec 64, 66 d'entraínement correspondant du balancier 44. La présence de ce jeu engendre un effet de choc lors du changement d'état, et favorise la brisure des soudures au niveau de chaque série de contacts 20, 22; 20, 24 pendant la phase de détente du ressort 58.In each stable state of the movable contact 20, it is noted that there is a clearance predetermined between the contact arm 30 and the spout 64, 66 of drive balance 44. The presence of this play generates a shock effect during change of state, and promotes breakage of the welds in each series contacts 20, 22; 20, 24 during the relaxation phase of the spring 58.

Les figures 2 à 5 représentent le relais inverseur 10 de la figure 1 équipé en plus d'un bouton test 70 devant lequel se déplace un indicateur 72 de position des contacts 20, 22; 20, 24. Le bouton test 70 à commande manuelle traverse un orifice 74 de passage ménagé dans la face avant 76 du boítier 12, et sert à actionner mécaniquement la palette 38 dans le sens de rapprochement avec la surface polaire 54, de manière à transmettre un mouvement de basculement au balancier 44, et de ce fait un changement d'état du contact mobile 20 suite à chaque enfoncement du bouton test 70. Figures 2 to 5 show the change-over relay 10 of Figure 1 additionally equipped a test button 70 in front of which an indicator 72 for the position of the contacts 20, 22; 20, 24. The manually operated test button 70 passes through an orifice 74 passage formed in the front face 76 of the housing 12, and is used to actuate mechanically the pallet 38 in the direction of approximation with the pole surface 54, so as to transmit a rocking movement to the balance 44, and from this changes the state of the moving contact 20 following each depression of the test button 70.

A l'intérieur du bouton test 70 est agencé un prisme 78 optique coopérant avec un palpeur 80 de position solidaire de la palette 38. Le palpeur 80 porte un premier repère coloré 82 qui se déplace en translation le long du prisme 78 en occupant deux positions extrêmes en fonction de l'emplacement de la palette 38.Inside the test button 70 is arranged an optical prism 78 cooperating with a position probe 80 integral with the pallet 38. The probe 80 carries a first colored marker 82 which moves in translation along the prism 78 while occupying two extreme positions depending on the location of the pallet 38.

Le bouton de test 70, le prisme 78, le palpeur 80 et un ressort de rappel 86 sont montés dans un support 88 solidaire du boítier 12. Le support 88 porte un deuxième repère de couleur 84 de coloration différente du premier repère 82.The test button 70, the prism 78, the probe 80 and a return spring 86 are mounted in a support 88 secured to the housing 12. The support 88 carries a second color marker 84 different in color from the first marker 82.

Dans la position OFF de la figure 2 correspondant à l'état de repos de l'électroaimant 14, les contacts 20, 22 de la première série de contacts sont ouverts, et les autres contacts 20, 24 de la deuxième série sont fermés. Le premier repère 82 du palpeur 80 est disposé en regard de la face inclinée du prisme 78, lequel réfléchit la coloration du premier repère 82 vers la tête du prisme 78.In the OFF position of Figure 2 corresponding to the rest state of the electromagnet 14, the contacts 20, 22 of the first series of contacts are open, and the other contacts 20, 24 of the second series are closed. The first benchmark 82 of the probe 80 is arranged opposite the inclined face of the prism 78, which reflects the coloring of the first marker 82 towards the head of the prism 78.

Dans la position ON de la figure 4 faisant suite à un changement d'état des contacts après excitation de l'électroaimant 14, l'attraction magnétique de la palette 38 contre la culasse 40 provoque la descente du palpeur 80. Le deuxième repère 84 de coloration différente se trouve au voisinage de la face inclinée du prisme 78, suivi de la réflexion du faisceau lumineux vers la face avant.In the ON position of figure 4 following a change of state of the contacts after excitation of the electromagnet 14, the magnetic attraction of the paddle 38 against the cylinder head 40 causes the probe 80 to descend. The second reference 84 of different coloring is found in the vicinity of the inclined face of the prism 78, followed by the reflection of the light beam towards the front face.

Dans les deux positions des figures 2 et 3, le bouton test 70 n'est pas actionné, et reste en permanence en saillie par l'action du ressort de rappel du type à compression 86.In the two positions of FIGS. 2 and 3, the test button 70 is not pressed, and permanently protrudes by the action of the return spring of the type compression 86.

En référence aux figures 6 et 7, l'enfoncement manuel du bouton test 70 dans l'orifice 74 entraíne le basculement forcé du basculeur 44, et le changement d'état des contacts. Dans ce cas, la signalisation donnée par l'indicateur 72 n'est pas juste, mais reste néanmoins invisible étant donné que l'opérateur cache la tête du prisme 78 aussi longtemps que son doigt exerce une poussée sur le bouton test 70.With reference to FIGS. 6 and 7, the manual depressing of the test button 70 in the orifice 74 causes the forced tilting of the rocker 44, and the change of state contacts. In this case, the signaling given by the indicator 72 is not correct, but remains invisible since the operator hides the prism head 78 as long as his finger pushes on the test button 70.

Il est clair que l'indicateur 72 et le bouton de test 70 pourrait être agencé différemment sans sortir du cadre de l'invention. Une variante consiste notamment à utiliser un prisme allongé et un palpeur ayant deux repères de couleurs différentes. Lorsque l'électroaimant est actionné l'indicateur se déplace et fait apparaítre sa deuxième couleur 92.It is clear that the indicator 72 and the test button 70 could be arranged differently without departing from the scope of the invention. A variant consists in particular of use an elongated prism and a probe with two different color markers. When the electromagnet is activated the indicator moves and shows its second color 92.

Claims (7)

  1. An electromagnetic relay housed in an insulating case (12) containing :
    an electromagnet (14) with pivoting ferromagnetic blade (38),
    an operating mechanism (16) with a rocker (44) mounted with rocking on a spindle (46) between two extreme angular positions,
    an operating component securedly united to the blade (38) and cooperating with the rocker (44) to move the latter from one position to the other at each operating cycle of the blade (38),
    an electrical power circuit (18) having a bistable rocking contact (20) driven by the rocker (44) and cooperating with at least one stationary contact (22, 24),
    and a flexible device (56) for retuming the blade (38) to the separated position in the rest state of the electromagnet (14).
    characterized in that
    the operating component comprises a connecting rod (48) articulated on the blade (38) and rocker (44) to form a permanent direct connection, the articulation point (50) of the connecting rod (48) on the rocker (44) being offset with respect to the rocking spindle (46).
  2. The electromagnetic relay according to claim 1, characterized in that the flexible retum device (56) comprises a pair of compression springs (58, 60) acting successively on the lower face of the blade (38), and extending parallel to one another and to the connecting rod (48) in a direction appreciably perpendicular to the blade (38).
  3. The electromagnetic relay according to claim 1 or 2, characterized in that the front face of the case (12) comprises an orifice (74) for passage of a manually operated test button (70) of the rocker (44), and that a contact position indicator (72) is integrated inside the test button (70).
  4. The electromagnetic relay according to claim 3, characterized in that the indicator (72) comprises an optic prism (78) cooperating with a sensor (80) securedly united to the blade (38), the sensor having at least one indicating marker (82, 92) designed to cooperate with the inclined face of the prism (78) depending on whether the blade (38) is in the attracted or separated position.
  5. The electromagnetic relay according to claim 3 or 4, characterized in that the indicator (72) comprises two markers (82, 84) of different colourings, and that the prism (78) is arranged to reflect the coloured beam of each marker (82, 84) in the direction of the front face.
  6. The electromagnetic relay according to claim 4 or 5, characterized in that a spring (86) is arranged between the blade (38) and the front face of the case (12) to bias the test button (70) to a raised position enabling reliable operation of the indicator (72).
  7. The electromagnetic relay according to claim 2, characterized in that the shorter first spring (58) located between the connecting rod (48) and the second spring (60) has a greater hardness than that of said second spring.
EP19940410057 1993-08-26 1994-07-27 Electromagnetic relay with bi-stable contact Expired - Lifetime EP0641003B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9310341A FR2709370B1 (en) 1993-08-26 1993-08-26 Electromagnetic relay with bistable contact.
FR9310341 1993-08-26

Publications (2)

Publication Number Publication Date
EP0641003A1 EP0641003A1 (en) 1995-03-01
EP0641003B1 true EP0641003B1 (en) 1998-12-23

Family

ID=9450438

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940410057 Expired - Lifetime EP0641003B1 (en) 1993-08-26 1994-07-27 Electromagnetic relay with bi-stable contact

Country Status (6)

Country Link
EP (1) EP0641003B1 (en)
CN (1) CN1037555C (en)
BR (1) BR9403330A (en)
DE (1) DE69415440T2 (en)
ES (1) ES2126728T3 (en)
FR (1) FR2709370B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010139113A1 (en) 2009-06-03 2010-12-09 Abb瑞士有限公司 Modular low voltage switch

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29615689U1 (en) * 1996-09-09 1996-10-31 Siemens AG, 80333 München Electrical switching device
DE19903751A1 (en) * 1999-01-30 2000-08-24 Eltako Gmbh Schaltgeraete Electromechanical switching device
JP4168820B2 (en) * 2003-04-24 2008-10-22 オムロン株式会社 Electromagnetic relay
SI23747A (en) 2011-05-12 2012-11-30 ISKRA@MIS@@d@d Bistable switch with bistable mechanism
WO2014196934A1 (en) 2013-06-06 2014-12-11 NELA razvojni center d.o.o. Bistable mechanism for switching electrical loads
DE102015110382A1 (en) * 2015-06-29 2016-12-29 Eaton Industries (Austria) Gmbh switchgear

Family Cites Families (4)

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Publication number Priority date Publication date Assignee Title
DE1085443B (en) * 1959-04-25 1960-07-14 Licentia Gmbh Signal relay
FR2482773A1 (en) * 1980-05-16 1981-11-20 Merlin Gerin Remote controlled electrical switch - controls two circuits disposed in housing with single electromagnet and mechanism
DE3736617A1 (en) * 1987-10-29 1989-05-11 Asea Brown Boveri Device for displaying a specific position of a structural element which can be moved inside a building
FR2676590B1 (en) * 1991-05-16 1994-06-17 Merlin Gerin TILT SWITCH WITH TILTING CONTACT.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010139113A1 (en) 2009-06-03 2010-12-09 Abb瑞士有限公司 Modular low voltage switch

Also Published As

Publication number Publication date
DE69415440T2 (en) 1999-06-10
CN1037555C (en) 1998-02-25
CN1104368A (en) 1995-06-28
FR2709370B1 (en) 1995-10-20
ES2126728T3 (en) 1999-04-01
EP0641003A1 (en) 1995-03-01
BR9403330A (en) 1995-04-11
DE69415440D1 (en) 1999-02-04
FR2709370A1 (en) 1995-03-03

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