EP1253609A1 - Sealed operating device for electrical apparatus - Google Patents

Sealed operating device for electrical apparatus Download PDF

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Publication number
EP1253609A1
EP1253609A1 EP02290885A EP02290885A EP1253609A1 EP 1253609 A1 EP1253609 A1 EP 1253609A1 EP 02290885 A EP02290885 A EP 02290885A EP 02290885 A EP02290885 A EP 02290885A EP 1253609 A1 EP1253609 A1 EP 1253609A1
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EP
European Patent Office
Prior art keywords
sealing membrane
control device
operating button
groove
opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02290885A
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German (de)
French (fr)
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EP1253609B1 (en
Inventor
Eric Dumas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Legrand SNC
Legrand France SA
Original Assignee
Legrand SA
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Publication date
Application filed by Legrand SA filed Critical Legrand SA
Publication of EP1253609A1 publication Critical patent/EP1253609A1/en
Application granted granted Critical
Publication of EP1253609B1 publication Critical patent/EP1253609B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
    • H01H23/02—Details
    • H01H23/04—Cases; Covers
    • H01H23/06—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
    • H01H23/065—Casings hermetically closed by a diaphragm through which passes an actuating member

Definitions

  • the present invention relates generally to the devices for control of electrical equipment and, more particularly, those used works in premises where the atmosphere is strongly aggressive.
  • control devices for electrical equipment of this type must be watertight, i.e. their control mechanisms must be fully protected against dust, water splashes similar to packets of sea.
  • a device control device electric waterproof which includes a box internally containing a control mechanism and closed on the front by a cover plate which accommodates a touch of maneuver carrying, on its interior face, two actuating plungers of said mechanism.
  • control mechanism The tightness of the control mechanism is ensured by a flexible waterproofing membrane which is clamped between the cover plate and the mechanism itself, for example by a latching device.
  • the plungers of the control button act directly on the sealing membrane for actuating an operating finger of the control in order to bring it into one or the other of the opening and closing of the movable electrical contacts of this mechanism.
  • the divers of this one maintain under maximum stress the membrane sealing on which they act, which is also found in stress on part of the operating finger of the control mechanism, which is unfavorable to the sustainability of the quality of this membrane.
  • the plungers of the operating button as well as the membrane sealants can be contaminated with dust which abrasion of the latter.
  • Document JP 09245551 also discloses a device for sealed electrical switchgear with cover sealing in flexible rubber-like material which completely covers the deflection area of the operating button of this device. The touch of maneuver is then operated by the user from the outer surface of this sealing cover.
  • this sealing cover is in permanence subject to environmental phenomena which can cause premature aging of the latter causing loss of mechanical characteristics.
  • this sealing cover may deteriorate until it tears. Thus, the tightness of the control device is no longer properly insured.
  • a device for waterproof electrical switchgear control which includes a housing internally a control mechanism for electrical equipment, closed on the front by an embellished plate, a touch of maneuver available of the user, pivotally mounted on the cover plate and bearing on its face inside a plunger for actuation of the control mechanism, as well a sealing membrane interposed between the operating button and the control mechanism located inside the housing, this membrane seal comprising a central opening through which the plunger passes actuation of the control mechanism.
  • the present invention provides a new device control device waterproof electrical device according to claim 1.
  • a control device 100 waterproof electrical equipment, such as a switch or a switch electric waterproof, which includes a housing 101 internally receiving a control mechanism 102 for electrical equipment.
  • This housing 101 here generally has a parallelepiped shape square and has, in one of its side walls, an opening introduction of the power supply cable from the network.
  • control mechanism 102 of which only the contours of its body insulation are shown in phantom, not strictly speaking of the invention and will not be described here in detail.
  • this control mechanism 102 comprises, inside an insulating body, electrical connection terminals and a movable electrical contacts between two positions, a position in which they are in contact with fixed electrical contacts, corresponding to the closed state of the control device, and another position in which they are moved away from these fixed electrical contacts, corresponding to the open state of the ordered.
  • the control mechanism here comprises a light diode 131 which allows viewing the closed state of the control device through a window 130 of the operating key 104.
  • the housing 101 made of rigid plastic material is closed on the front by a cover plate 103.
  • the cover plate 103 has a wall peripheral mounted on the peripheral edge of the housing 101. Between the edge peripheral of the housing 101 and the edge of the peripheral wall of the plate hubcap 103, a seal 120 is provided which is engaged in a groove 103B running along the lower edge of said peripheral wall of the cover plate 103.
  • This cover plate 103 further comprises a bottom 106, called commonly bowl, which closes the front opening of the housing 101.
  • the control device 100 includes an operating button 104 to the disposition of the user, mobile for actuating said control mechanism 102.
  • the operating button 104 is pivotally mounted on the bottom 106 of the cover plate 103.
  • the bottom 106 of the cover plate 103 has two pivot points 103A for the operating button 104 formed by bosses which cooperate with notches provided at the end tabs 104A carried by the internal face 104B of the operating button 104 (see figure 2).
  • the operating button 104 carries, on its face internal 104B, substantially at its center, a plunger 105 which extends to inside the housing 101 for actuating the control mechanism 102 and, more particularly, for tilting movement of the movable contacts between their two aforementioned positions.
  • the bottom 106 of the cover plate 103 has a central opening 107 freely traversed by the plunger 105 (see FIGS. 1 to 4).
  • control device 100 of electrical equipment includes a membrane seal 110 interposed between the operating button 104 and said control mechanism 102.
  • this sealing membrane 110 formed in one piece from molding of a flexible thermoplastic material, has a generally oval shape and wears, at its periphery, a skirt 112 which establishes contact along a line closed with said bottom 106 of the cover plate 103.
  • the bottom 106 of the cover plate 103 carries a groove 108, here an oval-shaped groove running around the central opening 107 of said bottom 106 of the cover plate 103, which forms a seat for receiving said skirt 112.
  • the groove 108 is defined between two cylindrical walls 108 ′ and 108 ", the skirt 112 of the waterproofing membrane 110 applying elastically against the internal face 108 "A of the internal cylindrical wall 108" of said groove 108.
  • the waterproofing membrane 110 when put in placed on the bottom 106 of the cover plate 103, the latter is stretched so that its skirt 112 is applied elastically against the internal face 108 "A of the inner cylindrical wall 108 "of the groove 108.
  • this waterproofing membrane 110 is advantageous because it allows easier automatic assembly of this membrane on the bottom of the cover plate because there is no right angle to get around.
  • This sealing membrane 110 comprises an opening 110A which, when this sealing membrane 110 is placed on the bottom 106 of the cover plate 103, comes opposite the central opening 107 provided in said bottom 106 of the cover plate 103.
  • This opening 110A located in the center of the sealing membrane 110 is freely traversed by the plunger 105 so that the latter has access to inside the housing 101 of the control device 100, without interfering with said sealing membrane.
  • the waterproofing membrane 110 has a flexible lip 111 which surrounds opening 110A.
  • this flexible lip 111 is located on the edge of the opening 110A of said sealing membrane 110.
  • This flexible lip 111 establishes contact with said operating button. 104 along a closed line and is advantageously able to deform elastically when switching the operating button 104 to follow this tilt and maintain contact with it along a line closed.
  • said flexible lip 111 generally deforms in bending to follow the tilting movement of the operating button 104 and it thus establishes a dynamic tight connection with this key of operation 104 by forming another pivot point thereof.
  • the operating button 104 carries, on its internal face 104B, a groove 115 which surrounds the plunger 105 and which forms a seat which pinchly receives the flexible lip 111.
  • the groove 115 has a conical section which widens towards its mouth, and said flexible lip 111 has a conical section complementary to that of groove 115.
  • the groove 115 carried by the internal face 104B of the operating button 104 is delimited by two cylindrical walls 116, 117, an internal wall 116 which extends inside the opening 110A of the sealing membrane 110 and an outer wall 117 shorter than said inner wall 116.
  • the waterproofing membrane 110 comprises, at the base of the flexible lip 111, a bead 113 which projects outwards, and inwards into the section of said opening 110A.
  • the flexible lip 111 comprising at its base the bead 113 is therefore forcibly engaged in the groove to ensure sealing at the opening 110A of said sealing membrane 110.
  • the flexible lip 111 of the sealing membrane 110 is truncated at its free end so as to form an annular ring 114.
  • the lip flexible 111 carried by the waterproofing membrane 110 generally deforms in flexion to remain in contact, by its bead 113 situated at its base, with the cylindrical walls 116, 117 of the groove 115 carried by said touch maneuver 104, and provide perfect dynamic sealing at this level. This sealing does not hinder the tilting movement of the plunger 105 which freely crosses the opening 110A of the waterproofing membrane 110 without interfere with it.

Landscapes

  • Push-Button Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Valve Device For Special Equipments (AREA)
  • Electrophonic Musical Instruments (AREA)

Abstract

The command mechanism (100) has a sealed unit with a container (101) with an internal command (102). A push button (104) moves driving the command mechanism. There is a sealed membrane (11) between the push button and the command mechanism. The push button has side internal faces and a groove (115) receiving the flexible lever grip (111) which carries the sealed membrane around its opening.

Description

La présente invention concerne de manière générale les dispositifs de commande d'appareillages électriques et, plus particulièrement, ceux mis en oeuvre dans des locaux où l'atmosphère est fortement agressive.The present invention relates generally to the devices for control of electrical equipment and, more particularly, those used works in premises where the atmosphere is strongly aggressive.

Suivant les dispositions normatives actuellement en vigueur, les dispositifs de commande d'appareillages électriques de ce type doivent être étanches, c'est-à-dire que leurs mécanismes de commande doivent être totalement protégés contre les poussières, les projections d'eau assimilables à des paquets de mer.According to the normative provisions currently in force, the control devices for electrical equipment of this type must be watertight, i.e. their control mechanisms must be fully protected against dust, water splashes similar to packets of sea.

Actuellement, on connaít déjà un dispositif de commande d'appareillages électriques étanche qui comprend un boítier contenant intérieurement un mécanisme de commande et fermé en façade par une plaque enjoliveur qui accueille une touche de manoeuvre portant, sur sa face intérieure, deux plongeurs d'actionnement dudit mécanisme.Currently, there is already known a device control device electric waterproof which includes a box internally containing a control mechanism and closed on the front by a cover plate which accommodates a touch of maneuver carrying, on its interior face, two actuating plungers of said mechanism.

L'étanchéité du mécanisme de commande est assurée par l'intermédiaire d'une membrane d'étanchéité souple qui est pincée entre la plaque enjoliveur et le mécanisme lui-même, par exemple par un dispositif d'encliquetage.The tightness of the control mechanism is ensured by a flexible waterproofing membrane which is clamped between the cover plate and the mechanism itself, for example by a latching device.

Les plongeurs de la touche de commande agissent directement sur la membrane d'étanchéité pour actionner un doigt de manoeuvre du mécanisme de commande afin de l'amener dans une ou l'autre des positions d'ouverture et de fermeture des contacts électriques mobiles de ce mécanisme.The plungers of the control button act directly on the sealing membrane for actuating an operating finger of the control in order to bring it into one or the other of the opening and closing of the movable electrical contacts of this mechanism.

Un tel dispositif de commande d'appareillages électriques étanche présente cependant plusieurs inconvénients.Such a sealed electrical apparatus control device has several drawbacks, however.

Tout d'abord, suivant l'une des deux positions de la touche de manoeuvre, les plongeurs de celle-ci maintiennent sous contrainte maximale la membrane d'étanchéité sur laquelle ils agissent, qui se trouve elle-même également en contrainte sur une partie du doigt de manoeuvre du mécanisme de commande, ce qui est défavorable à la pérennité de la qualité de cette membrane.First, according to one of the two positions of the operating button, the divers of this one maintain under maximum stress the membrane sealing on which they act, which is also found in stress on part of the operating finger of the control mechanism, which is unfavorable to the sustainability of the quality of this membrane.

En outre, lors du basculement de la touche de manoeuvre, il se produit un frottement entre l'extrémité du plongeur et la membrane d'étanchéité sur laquelle il agit.In addition, when switching the operating button, there is a friction between the end of the plunger and the waterproofing membrane on which he acts.

Les plongeurs de la touche de manoeuvre ainsi que la membrane d'étanchéité peuvent être souillés par des poussières qui produisent une abrasion de cette dernière. The plungers of the operating button as well as the membrane sealants can be contaminated with dust which abrasion of the latter.

Ainsi, l'ensemble des contraintes précitées que subit cette membrane d'étanchéité peut entraíner sa rupture et par là même un défaut d'étanchéité.Thus, all of the aforementioned constraints that this membrane undergoes sealing can cause it to rupture and thereby a leak.

Enfin, le fait d'interposer une membrane d'étanchéité souple entre les plongeurs de la touche de manoeuvre et le doigt d'actionnement du mécanisme de commande entraíne un amortissement de l'action provoquée par chaque plongeur sur le doigt d'actionnement, ce qui diminue la pression exercée entre les contacts électriques du mécanisme de commande sous l'action du doigt d'actionnement, et ce qui produit un échauffement anormal dans la zone desdits contacts.Finally, the fact of interposing a flexible waterproofing membrane between the plungers of the operating button and the actuating finger of the mechanism control causes a damping of the action caused by each plunger on the actuating finger, which decreases the pressure exerted between the electrical contacts of the control mechanism under the action of the finger actuation, and what produces an abnormal heating in the area of said contact.

On connaít également du document JP 09245551 un dispositif de commande d'appareillages électriques étanche qui comporte un couvercle d'étanchéité en matière souple du type caoutchouc qui recouvre totalement la zone de débattement de la touche de manoeuvre de ce dispositif. La touche de manoeuvre est alors actionnée par l'utilisateur à partir de la surface extérieure de ce couvercle d'étanchéité.Document JP 09245551 also discloses a device for sealed electrical switchgear with cover sealing in flexible rubber-like material which completely covers the deflection area of the operating button of this device. The touch of maneuver is then operated by the user from the outer surface of this sealing cover.

Toutefois, la matière souple de ce couvercle d'étanchéité est en permanence soumise à des phénomènes environnementaux qui peuvent provoquer un vieillissement prématuré de celle-ci entraínant des pertes de ses caractéristiques mécaniques.However, the flexible material of this sealing cover is in permanence subject to environmental phenomena which can cause premature aging of the latter causing loss of mechanical characteristics.

En outre, au cours des différents actionnements de la touche de manoeuvre faits par les utilisateurs, ce couvercle d'étanchéité peut se dégrader jusqu'à se déchirer. Ainsi, l'étanchéité du dispositif de commande n'est plus correctement assurée.In addition, during the various actuations of the maneuver by the users, this sealing cover may deteriorate until it tears. Thus, the tightness of the control device is no longer properly insured.

Par ailleurs, on connaít du document DE 296 16 958 U1 un dispositif de commande d'appareillages électriques étanche qui comprend un boítier recevant intérieurement un mécanisme de commande d'appareillages électriques, fermé en façade par une plaque enjoliveur, une touche de manoeuvre à la disposition de l'usager, montée à basculement sur la plaque enjoliveur et portant sur sa face intérieure un plongeur pour l'actionnement du mécanisme de commande, ainsi qu'une membrane d'étanchéité interposée entre la touche de manoeuvre et le mécanisme de commande situé à l'intérieur du boítier, cette membrane d'étanchéité comprenant une ouverture centrale traversée par le plongeur pour l'actionnement du mécanisme de commande. Furthermore, we know from document DE 296 16 958 U1 a device for waterproof electrical switchgear control which includes a housing internally a control mechanism for electrical equipment, closed on the front by an embellished plate, a touch of maneuver available of the user, pivotally mounted on the cover plate and bearing on its face inside a plunger for actuation of the control mechanism, as well a sealing membrane interposed between the operating button and the control mechanism located inside the housing, this membrane seal comprising a central opening through which the plunger passes actuation of the control mechanism.

L'inconvénient principal d'un tel dispositif de commande d'appareillages électriques étanche est que le bord de l'ouverture centrale de la membrane d'étanchéité entourant le plongeur de la touche de manoeuvre n'épouse pas la surface cylindrique dudit plongeur, et il subsiste toujours une ouverture entre la membrane d'étanchéité et le plongeur.The main drawback of such a device control device waterproof electrical is that the edge of the central diaphragm opening seal surrounding the plunger of the operating button does not match the cylindrical surface of said plunger, and there is always an opening between the waterproofing membrane and plunger.

En outre, au cours des nombreuses manoeuvres de la touche de manoeuvre et donc du plongeur, la membrane d'étanchéité, qui vient au contact de la face intérieure de la touche de manoeuvre, s'use par frottement. Ainsi, dans ces conditions, l'étanchéité n'est plus réalisée de manière fiable.In addition, during the numerous maneuvers of the operation and therefore of the plunger, the sealing membrane, which comes into contact on the inside of the operating button, wears out by friction. So in these conditions, the sealing is no longer performed reliably.

Enfin, on connaít des documents EP 0 878 814, US 4 370 528, DE 1 665 752 et GB 329 447, des dispositifs de commande d'appareillages électriques étanches dans lesquels la membrane d'étanchéité, interposée entre la touche de manoeuvre et le mécanisme de commande situé à l'intérieur du boítier, vient s'appliquer directement sur le plongeur porté par ladite touche de manoeuvre et agissant sur le mécanisme de commande.Finally, we know documents EP 0 878 814, US 4 370 528, DE 1 665 752 and GB 329 447, apparatus control devices waterproof electricals in which the waterproofing membrane, interposed between the operating button and the control mechanism located inside the case, is applied directly to the plunger carried by said button operating and acting on the control mechanism.

Dans les cas illustrés par les documents EP 0 878 814 et DE 1 665 752, une lèvre annulaire de ladite membrane d'étanchéité s'applique par pression sur ledit plongeur.In the cases illustrated by documents EP 0 878 814 and DE 1 665 752, an annular lip of said sealing membrane is applied by pressing on said diver.

Au cours des nombreuses manoeuvres de la touche de manoeuvre et donc du plongeur, cette lèvre annulaire s'use par frottement et l'étanchéité n'est plus réalisée de manière fiable.During the many maneuvers of the maneuver button and therefore of the plunger, this annular lip wears out by friction and the seal is not no longer performed reliably.

Afin de pallier à l'ensemble des inconvénients précités, la présente invention propose un nouveau dispositif de commande d'appareillages électriques étanche selon la revendication 1.In order to overcome all of the aforementioned drawbacks, the present invention provides a new device control device waterproof electrical device according to claim 1.

D'autres caractéristiques non limitatives et avantageuses du dispositif de commande conforme à l'invention sont les suivantes :

  • ladite rainure est délimitée entre deux parois cylindriques, une paroi interne qui s'étend à l'intérieur de l'ouverture de la membrane d'étanchéité et une paroi externe plus courte que ladite paroi interne et ladite lèvre flexible comporte à sa base un bourrelet qui déborde vers l'intérieur dans la section de ladite ouverture de la membrane d'étanchéité et vers l'extérieur, l'extrémité libre de ladite paroi externe de ladite rainure prenant appui contre ce bourrelet qui, par ailleurs, est compressé contre une face de ladite paroi interne ;
  • le boítier est fermé en façade par une plaque enjoliveur sur laquelle la touche de manoeuvre est montée à basculement, ladite lèvre flexible se déformant globalement en flexion pour suivre le mouvement de basculement de ladite touche de manoeuvre ;
  • la plaque enjoliveur présente un fond portant des points de pivotement de la touche de manoeuvre et la membrane d'étanchéité porte, à sa périphérie, une jupe qui établit un contact suivant une ligne fermée avec ledit fond de la plaque enjoliveur ;
  • le fond de la plaque enjoliveur porte une rainure formant un siège de réception de ladite jupe de la membrane d'étanchéité, cette jupe s'appliquant élastiquement contre une face interne de ladite rainure ;
  • ladite lèvre flexible de la membrane d'étanchéité est tronquée à son extrémité libre de manière à former une couronne annulaire ;
  • ladite lèvre flexible de la membrane d'étanchéité est située sur le bord de son ouverture ;
  • la touche de manoeuvre comporte, sur sa face interne, un plongeur qui traverse librement ladite ouverture de la membrane d'étanchéité pour actionner le mécanisme de commande ;
  • ladite membrane d'étanchéité présente une forme ovale ; et
  • ladite membrane d'étanchéité est formée d'une seule pièce venue de moulage d'une matière thermoplastique souple.
Other non-limiting and advantageous characteristics of the control device according to the invention are the following:
  • said groove is delimited between two cylindrical walls, an internal wall which extends inside the opening of the sealing membrane and an external wall shorter than said internal wall and said flexible lip has at its base a bead which projects inwards in the section of said opening of the waterproofing membrane and outwards, the free end of said external wall of said groove bearing against this bead which, moreover, is compressed against a face of said inner wall;
  • the housing is closed on the front by an embellishing plate on which the operating button is tilted, said flexible lip deforming generally in bending to follow the tilting movement of said operating button;
  • the cover plate has a bottom carrying pivot points of the operating button and the sealing membrane carries, at its periphery, a skirt which establishes contact along a closed line with said bottom of the cover plate;
  • the bottom of the cover plate carries a groove forming a seat for receiving said skirt of the sealing membrane, this skirt being applied elastically against an internal face of said groove;
  • said flexible lip of the sealing membrane is truncated at its free end so as to form an annular ring;
  • said flexible lip of the waterproofing membrane is situated on the edge of its opening;
  • the operating button comprises, on its internal face, a plunger which freely crosses said opening of the sealing membrane to actuate the control mechanism;
  • said sealing membrane has an oval shape; and
  • said sealing membrane is formed in one piece from molding of a flexible thermoplastic material.

La description qui va suivre en regard des dessins annexés, donnés à titre d'exemples non limitatifs, fera bien comprendre en quoi consiste l'invention et comment elle peut être réalisée.The following description with reference to the accompanying drawings, given as non-limiting examples, will make it clear what the invention consists of and how it can be achieved.

Sur les dessins annexés :

  • la figure 1 est une vue schématique partiellement coupée d'un dispositif de commande d'appareillages électriques selon l'invention ;
  • la figure 2 est une vue de détail en perspective éclatée d'une partie du dispositif de commande de la figure 1 ;
  • la figure 3 est une vue en coupe transversale de la figure 2 ;
  • la figure 4 est une vue de dessous de la figure 3 ; et
  • la figure 5 est une vue assemblée de la figure 2.
In the accompanying drawings:
  • Figure 1 is a partially sectioned schematic view of an electrical device control device according to the invention;
  • Figure 2 is an exploded perspective detail view of a portion of the control device of Figure 1;
  • Figure 3 is a cross-sectional view of Figure 2;
  • Figure 4 is a bottom view of Figure 3; and
  • FIG. 5 is an assembled view of FIG. 2.

Sur la figure 1, on a représenté un dispositif de commande 100 d'appareillages électriques étanche, tel qu'un interrupteur ou un commutateur électrique étanche, qui comporte un boítier 101 recevant intérieurement un mécanisme de commande 102 d'appareillages électriques.In Figure 1, there is shown a control device 100 waterproof electrical equipment, such as a switch or a switch electric waterproof, which includes a housing 101 internally receiving a control mechanism 102 for electrical equipment.

Ce boítier 101 présente ici globalement une forme parallélépipédique carrée et comporte, dans une de ses parois latérales, une ouverture d'introduction du câble d'alimentation électrique provenant du réseau.This housing 101 here generally has a parallelepiped shape square and has, in one of its side walls, an opening introduction of the power supply cable from the network.

Le mécanisme de commande 102, dont seuls les contours de son corps isolant sont représentés en traits mixtes, ne fait pas partie à proprement parler de l'invention et ne sera pas ici décrit dans le détail.The control mechanism 102, of which only the contours of its body insulation are shown in phantom, not strictly speaking of the invention and will not be described here in detail.

Globalement, ce mécanisme de commande 102 comporte, à l'intérieur d'un corps isolant, des bornes de raccordement électrique et un système de contacts électriques mobiles entre deux positions, une position dans laquelle ils sont au contact de contacts électriques fixes, correspondant à l'état fermé du dispositif de commande, et une autre position dans laquelle ils sont écartés de ces contacts électriques fixes, correspondant à l'état ouvert du dispositif de commande.Overall, this control mechanism 102 comprises, inside an insulating body, electrical connection terminals and a movable electrical contacts between two positions, a position in which they are in contact with fixed electrical contacts, corresponding to the closed state of the control device, and another position in which they are moved away from these fixed electrical contacts, corresponding to the open state of the ordered.

Le mécanisme de commande comprend ici une diode lumineuse 131 qui permet de visualiser l'état fermé du dispositif de commande au travers d'une fenêtre 130 de la touche de manoeuvre 104.The control mechanism here comprises a light diode 131 which allows viewing the closed state of the control device through a window 130 of the operating key 104.

Le boítier 101 réalisé en matière plastique rigide est fermé en façade par une plaque enjoliveur 103. La plaque enjoliveur 103 comporte une paroi périphérique montée sur le bord périphérique du boítier 101. Entre le bord périphérique du boítier 101 et le bord de la paroi périphérique de la plaque enjoliveur 103, il est prévu un joint d'étanchéité 120 qui est engagé dans une rainure 103B courant le long du bord inférieur de ladite paroi périphérique de la plaque enjoliveur 103.The housing 101 made of rigid plastic material is closed on the front by a cover plate 103. The cover plate 103 has a wall peripheral mounted on the peripheral edge of the housing 101. Between the edge peripheral of the housing 101 and the edge of the peripheral wall of the plate hubcap 103, a seal 120 is provided which is engaged in a groove 103B running along the lower edge of said peripheral wall of the cover plate 103.

Cette plaque enjoliveur 103 comporte en outre un fond 106, appelé communément cuvette, qui obture l'ouverture de façade du boítier 101.This cover plate 103 further comprises a bottom 106, called commonly bowl, which closes the front opening of the housing 101.

Le dispositif de commande 100 comporte une touche de manoeuvre 104 à la disposition de l'usager, mobile pour actionner ledit mécanisme de commande 102. The control device 100 includes an operating button 104 to the disposition of the user, mobile for actuating said control mechanism 102.

A cet effet, la touche de manoeuvre 104 est montée à basculement sur le fond 106 de la plaque enjoliveur 103. Ici, le fond 106 de la plaque enjoliveur 103 comporte deux points de pivotement 103A de la touche de manoeuvre 104 formés par des bossages qui coopèrent avec des encoches prévues à l'extrémité de pattes 104A portées par la face interne 104B de la touche de manoeuvre 104 (voir figure 2).To this end, the operating button 104 is pivotally mounted on the bottom 106 of the cover plate 103. Here, the bottom 106 of the cover plate 103 has two pivot points 103A for the operating button 104 formed by bosses which cooperate with notches provided at the end tabs 104A carried by the internal face 104B of the operating button 104 (see figure 2).

De manière connue en soi, la touche de manoeuvre 104 porte, sur sa face interne 104B, sensiblement en son centre, un plongeur 105 qui s'étend à l'intérieur du boítier 101 pour actionner le mécanisme de commande 102 et, plus particulièrement, pour déplacer à basculement les contacts mobiles entre leurs deux positions précitées.In a manner known per se, the operating button 104 carries, on its face internal 104B, substantially at its center, a plunger 105 which extends to inside the housing 101 for actuating the control mechanism 102 and, more particularly, for tilting movement of the movable contacts between their two aforementioned positions.

Pour ce faire, le fond 106 de la plaque enjoliveur 103 comporte une ouverture centrale 107 traversée librement par le plongeur 105 (voir figures 1 à 4).To do this, the bottom 106 of the cover plate 103 has a central opening 107 freely traversed by the plunger 105 (see FIGS. 1 to 4).

Selon une caractéristique avantageuse du dispositif de commande 100 d'appareillages électriques représenté sur les figures, il comporte une membrane d'étanchéité 110 interposée entre la touche de manoeuvre 104 et ledit mécanisme de commande 102.According to an advantageous characteristic of the control device 100 of electrical equipment shown in the figures, it includes a membrane seal 110 interposed between the operating button 104 and said control mechanism 102.

Selon l'exemple représenté plus particulièrement sur les figures 2 à 4, cette membrane d'étanchéité 110, formée d'une seule pièce venue de moulage d'une matière thermoplastique souple, présente une forme globalement ovale et porte, à sa périphérie, une jupe 112 qui établit un contact suivant une ligne fermée avec ledit fond 106 de la plaque enjoliveur 103.According to the example shown more particularly in FIGS. 2 to 4, this sealing membrane 110, formed in one piece from molding of a flexible thermoplastic material, has a generally oval shape and wears, at its periphery, a skirt 112 which establishes contact along a line closed with said bottom 106 of the cover plate 103.

A cet effet, le fond 106 de la plaque enjoliveur 103 porte une rainure 108, ici une rainure de forme ovale, courant autour de l'ouverture centrale 107 dudit fond 106 de la plaque enjoliveur 103, qui forme un siège de réception de ladite jupe 112. La rainure 108 est définie entre deux parois cylindriques 108' et 108", la jupe 112 de la membrane d'étanchéité 110 s'appliquant élastiquement contre la face interne 108"A de la paroi cylindrique intérieure 108" de ladite rainure 108.To this end, the bottom 106 of the cover plate 103 carries a groove 108, here an oval-shaped groove running around the central opening 107 of said bottom 106 of the cover plate 103, which forms a seat for receiving said skirt 112. The groove 108 is defined between two cylindrical walls 108 ′ and 108 ", the skirt 112 of the waterproofing membrane 110 applying elastically against the internal face 108 "A of the internal cylindrical wall 108" of said groove 108.

Plus particulièrement, lorsque la membrane d'étanchéité 110 est mise en place sur le fond 106 de la plaque enjoliveur 103, celle-ci est tendue de manière à ce que sa jupe 112 s'applique élastiquement contre la face interne 108"A de la paroi cylindrique intérieure 108" de la rainure 108. More particularly, when the waterproofing membrane 110 is put in placed on the bottom 106 of the cover plate 103, the latter is stretched so that its skirt 112 is applied elastically against the internal face 108 "A of the inner cylindrical wall 108 "of the groove 108.

La forme globalement ovale de cette membrane d'étanchéité 110 est avantageuse car elle permet un assemblage automatique plus aisé de cette membrane sur le fond de la plaque enjoliveur du fait qu'il n'y a pas d'angle droit à contourner.The generally oval shape of this waterproofing membrane 110 is advantageous because it allows easier automatic assembly of this membrane on the bottom of the cover plate because there is no right angle to get around.

Bien entendu, on peut envisager toutes autres formes géométriques pour la membrane d'étanchéité, qui peuvent alors nécessiter un assemblage manuel de celle-ci sur le fond de la plaque enjoliveur.Of course, we can consider all other geometric shapes for the waterproofing membrane, which may then require manual assembly of it on the bottom of the cover plate.

Cette membrane d'étanchéité 110 comprend une ouverture 110A qui, lorsque cette membrane d'étanchéité 110 est mise en place sur le fond 106 de la plaque enjoliveur 103, vient en regard de l'ouverture centrale 107 prévue dans ledit fond 106 de la plaque enjoliveur 103.This sealing membrane 110 comprises an opening 110A which, when this sealing membrane 110 is placed on the bottom 106 of the cover plate 103, comes opposite the central opening 107 provided in said bottom 106 of the cover plate 103.

Cette ouverture 110A située au centre de la membrane d'étanchéité 110 est traversée librement par le plongeur 105 pour que celui-ci ait accès à l'intérieur du boítier 101 du dispositif de commande 100, sans interférer avec ladite membrane d'étanchéité.This opening 110A located in the center of the sealing membrane 110 is freely traversed by the plunger 105 so that the latter has access to inside the housing 101 of the control device 100, without interfering with said sealing membrane.

Avantageusement, comme cela est représenté sur les figures 1 à 4, la membrane d'étanchéité 110 comporte une lèvre flexible 111 qui entoure l'ouverture 110A. Ici, cette lèvre flexible 111 est située sur le bord de l'ouverture 110A de ladite membrane d'étanchéité 110.Advantageously, as shown in Figures 1 to 4, the waterproofing membrane 110 has a flexible lip 111 which surrounds opening 110A. Here, this flexible lip 111 is located on the edge of the opening 110A of said sealing membrane 110.

Cette lèvre flexible 111 établit un contact avec ladite touche de manoeuvre 104 le long d'une ligne fermée et est apte avantageusement à se déformer élastiquement lors du basculement de la touche de manoeuvre 104 pour suivre ce basculement et maintenir le contact avec cette dernière le long d'une ligne fermée.This flexible lip 111 establishes contact with said operating button. 104 along a closed line and is advantageously able to deform elastically when switching the operating button 104 to follow this tilt and maintain contact with it along a line closed.

A cet effet, ladite lèvre flexible 111 se déforme globalement en flexion pour suivre le mouvement de basculement de la touche de manoeuvre 104 et elle établit ainsi une liaison étanche dynamique avec cette touche de manoeuvre 104 en formant un autre point de pivotement de celle-ci.To this end, said flexible lip 111 generally deforms in bending to follow the tilting movement of the operating button 104 and it thus establishes a dynamic tight connection with this key of operation 104 by forming another pivot point thereof.

La touche de manoeuvre 104 porte, sur sa face interne 104B, une rainure 115 qui entoure le plongeur 105 et qui forme un siège qui reçoit à pincement la lèvre flexible 111. The operating button 104 carries, on its internal face 104B, a groove 115 which surrounds the plunger 105 and which forms a seat which pinchly receives the flexible lip 111.

Ici, la rainure 115 présente une section conique qui s'élargit vers son embouchure, et ladite lèvre flexible 111 présente une section conique complémentaire de celle de la rainure 115.Here, the groove 115 has a conical section which widens towards its mouth, and said flexible lip 111 has a conical section complementary to that of groove 115.

La rainure 115 portée par la face interne 104B de la touche de manoeuvre 104 est délimitée par deux parois cylindriques 116, 117, une paroi interne 116 qui s'étend à l'intérieur de l'ouverture 110A de la membrane d'étanchéité 110 et une paroi externe 117 plus courte que ladite paroi interne 116.The groove 115 carried by the internal face 104B of the operating button 104 is delimited by two cylindrical walls 116, 117, an internal wall 116 which extends inside the opening 110A of the sealing membrane 110 and an outer wall 117 shorter than said inner wall 116.

La membrane d'étanchéité 110 comporte, à la base de la lèvre flexible 111, un bourrelet 113 qui déborde vers l'extérieur, et vers l'intérieur dans la section de ladite ouverture 110A.The waterproofing membrane 110 comprises, at the base of the flexible lip 111, a bead 113 which projects outwards, and inwards into the section of said opening 110A.

Ainsi, l'extrémité libre 117A de la paroi externe cylindrique 117 de la rainure 115 prend appui contre le bourrelet 113 de la lèvre flexible 111, et ce bourrelet 113 est par ailleurs compressé contre une face de ladite paroi interne cylindrique 116 de la rainure 115.Thus, the free end 117A of the cylindrical outer wall 117 of the groove 115 bears against the bead 113 of the flexible lip 111, and this bead 113 is also compressed against one face of said internal wall cylindrical 116 of the groove 115.

La lèvre flexible111 comportant à sa base le bourrelet 113 est donc engagée à force dans la rainure afin d'assurer l'étanchéité au niveau de l'ouverture 110A de ladite membrane d'étanchéité 110.The flexible lip 111 comprising at its base the bead 113 is therefore forcibly engaged in the groove to ensure sealing at the opening 110A of said sealing membrane 110.

En outre, la lèvre flexible 111 de la membrane d'étanchéité 110 est tronquée à son extrémité libre de façon à former une couronne annulaire 114.In addition, the flexible lip 111 of the sealing membrane 110 is truncated at its free end so as to form an annular ring 114.

Ainsi, à chaque basculement de la touche de manoeuvre 104, la lèvre flexible 111 portée par la membrane d'étanchéité 110 se déforme globalement en flexion pour rester en contact, par son bourrelet 113 situé à sa base, avec les parois cylindriques 116, 117 de la rainure 115 portées par ladite touche de manoeuvre 104, et assurer à ce niveau une étanchéité dynamique parfaite. Cette étanchéité ne gêne en rien le mouvement de basculement du plongeur 105 qui traverse librement l'ouverture 110A de la membrane d'étanchéité 110 sans interférer avec elle.Thus, each time the operating button 104 is tilted, the lip flexible 111 carried by the waterproofing membrane 110 generally deforms in flexion to remain in contact, by its bead 113 situated at its base, with the cylindrical walls 116, 117 of the groove 115 carried by said touch maneuver 104, and provide perfect dynamic sealing at this level. This sealing does not hinder the tilting movement of the plunger 105 which freely crosses the opening 110A of the waterproofing membrane 110 without interfere with it.

Il n'y a donc aucun phénomène d'usure intervenant sur la membrane d'étanchéité 110 du fait de la répétition du mouvement de basculement de la touche de manoeuvre.There is therefore no wear phenomenon occurring on the membrane. seal 110 due to the repetitive tilting movement of the maneuvering button.

La présente invention n'est nullement limitée au mode de réalisation décrit et représenté, mais l'homme du métier saura y apporter toute variante conforme à son esprit.The present invention is in no way limited to the embodiment described and represented, but the person skilled in the art will be able to make any conforming variant therein to his mind.

Claims (10)

Dispositif de commande (100) d'appareillages électriques étanche, comprenant un boítier (101) recevant intérieurement un mécanisme de commande (102) d'appareillages électriques, une touche de manoeuvre (104) à la disposition de l'usager, mobile pour actionner ledit mécanisme de commande (102), et une membrane d'étanchéité (110) interposée entre la touche de manoeuvre (104) et ledit mécanisme de commande (102), cette membrane d'étanchéité (110) comprenant une ouverture (110A) au travers de laquelle la touche de manoeuvre (104) agit sur ledit mécanisme de commande (102), caractérisé en ce que la touche de manoeuvre (104) porte, du côté de sa face interne (104B), une rainure (115) présentant une section conique qui s'élargit vers son embouchure, cette rainure (115) recevant à pincement une lèvre flexible (111) que comporte la membrane d'étanchéité (110) autour de son ouverture (110A), cette lèvre flexible présentant une section conique complémentaire de celle de la rainure (115) de sorte qu'elle établit un contact avec ladite touche de manoeuvre (104) le long d'une ligne fermée, cette lèvre flexible (111) étant apte à se déformer élastiquement lors du déplacement de la touche de manoeuvre (104) pour suivre ce déplacement et maintenir le contact avec cette dernière le long d'une ligne fermée.Control device (100) for waterproof electrical equipment, comprising a housing (101) internally receiving a control mechanism (102) for electrical equipment, an operating button (104) available to the user, mobile for actuating said control mechanism (102), and a sealing membrane (110) interposed between the operating button (104) and said control mechanism (102), this sealing membrane (110) comprising an opening (110A) at the through which the operating button (104) acts on said control mechanism (102), characterized in that the operating button (104) carries, on the side of its internal face (104B), a groove (115) having a conical section which widens towards its mouth, this groove (115) pinchingly receiving a flexible lip (111) which the sealing membrane (110) has around its opening (110A), this flexible lip having a complementary conical section from cell e of the groove (115) so that it establishes contact with said operating button (104) along a closed line, this flexible lip (111) being able to deform elastically during movement of the button maneuver (104) to follow this movement and maintain contact with the latter along a closed line. Dispositif de commande (100) selon la revendication 1, caractérisé en ce que ladite rainure (115) est délimitée entre deux parois cylindriques (116, 117), une paroi interne (116) qui s'étend à l'intérieur de l'ouverture (110A) de la membrane d'étanchéité (110) et une paroi externe (117) plus courte que ladite paroi interne (116) et en ce que ladite lèvre flexible (111) comporte à sa base un bourrelet (113) qui déborde vers l'intérieur dans la section de ladite ouverture (110A) de la membrane d'étanchéité (110) et vers l'extérieur, l'extrémité libre (117A) de ladite paroi externe (117) de ladite rainure (115) prenant appui contre ce bourrelet (113) qui, par ailleurs, est compressé contre une face de ladite paroi interne (116).Control device (100) according to claim 1, characterized in that said groove (115) is delimited between two cylindrical walls (116, 117), an internal wall (116) which extends inside the opening (110A) of the sealing membrane (110) and an outer wall (117) shorter than said inner wall (116) and in that said flexible lip (111) has at its base a bead (113) which projects towards inside in the section of said opening (110A) of the sealing membrane (110) and towards the outside, the free end (117A) of said external wall (117) of said groove (115) bearing against this bead (113) which, moreover, is compressed against a face of said internal wall (116). Dispositif de commande (100) selon l'une des revendications précédentes, caractérisé en ce que le boítier (101) est fermé en façade par une plaque enjoliveur (103) sur laquelle la touche de manoeuvre (104) est montée à basculement, ladite lèvre flexible (111) se déformant globalement en flexion pour suivre le mouvement de basculement de ladite touche de manoeuvre (104).Control device (100) according to one of the preceding claims, characterized in that the housing (101) is closed on the front by an embellishing plate (103) on which the operating button (104) is pivotally mounted, said lip flexible (111) deforming overall in bending to follow the rocking movement of said operating button (104). Dispositif de commande (100) selon la revendication 3, caractérisé en ce que la plaque enjoliveur (103) présente un fond (106) portant des points de pivotement de la touche de manoeuvre (104) et la membrane d'étanchéité (110) porte, à sa périphérie, une jupe (112) qui établit un contact suivant une ligne fermée avec ledit fond (106) de la plaque enjoliveur (103).Control device (100) according to claim 3, characterized in that the cover plate (103) has a bottom (106) carrying pivot points of the operating button (104) and the sealing membrane (110) carries , at its periphery, a skirt (112) which establishes contact along a closed line with said bottom (106) of the cover plate (103). Dispositif de commande (100) selon la revendication 4, caractérisé en ce que le fond (106) de la plaque enjoliveur (103) porte une rainure (108) formant un siège de réception de ladite jupe (112) de la membrane d'étanchéité, cette jupe (112) s'appliquant élastiquement contre une face interne (108"A) de ladite rainure (108).Control device (100) according to claim 4, characterized in that the bottom (106) of the cover plate (103) carries a groove (108) forming a seat for receiving said skirt (112) of the sealing membrane , this skirt (112) being applied elastically against an internal face (108 "A) of said groove (108). Dispositif de commande (100) selon l'une des revendications 1 à 5, caractérisé en ce que ladite lèvre flexible (111) de la membrane d'étanchéité (110) est tronquée à son extrémité libre de manière à former une couronne annulaire.Control device (100) according to one of claims 1 to 5, characterized in that said flexible lip (111) of the sealing membrane (110) is truncated at its free end so as to form an annular ring. Dispositif de commande (100) selon l'une des revendications 1 à 6, caractérisé en ce que ladite lèvre flexible (111) de la membrane d'étanchéité est située sur le bord de son ouverture (110A).Control device (100) according to one of claims 1 to 6, characterized in that said flexible lip (111) of the sealing membrane is located on the edge of its opening (110A). Dispositif de commande (100) selon l'une des revendications 1 à 7, caractérisé en ce que la touche de manoeuvre (104) comporte, sur sa face interne (104B), un plongeur (105) qui traverse librement ladite ouverture (110A) de la membrane d'étanchéité (110) pour actionner le mécanisme de commande (102).Control device (100) according to one of claims 1 to 7, characterized in that the operating button (104) comprises, on its internal face (104B), a plunger (105) which freely crosses said opening (110A) sealing membrane (110) for actuating the control mechanism (102). Dispositif de commande (100) selon l'une des revendications précédentes, caractérisé en ce que ladite membrane d'étanchéité présente une forme ovale.Control device (100) according to one of the preceding claims, characterized in that the said sealing membrane has an oval shape. Dispositif de commande (100) selon l'une des revendications précédentes, caractérisé en ce que ladite membrane d'étanchéité (110) est formée d'une seule pièce venue de moulage d'une matière thermoplastique souple.Control device (100) according to one of the preceding claims, characterized in that the said sealing membrane (110) is formed in one piece by molding from a flexible thermoplastic material.
EP02290885A 2001-04-23 2002-04-09 Sealed operating device for electrical apparatus Expired - Lifetime EP1253609B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0105443A FR2823905B1 (en) 2001-04-23 2001-04-23 SEALED ELECTRICAL EQUIPMENT CONTROL DEVICE
FR0105443 2001-04-23

Publications (2)

Publication Number Publication Date
EP1253609A1 true EP1253609A1 (en) 2002-10-30
EP1253609B1 EP1253609B1 (en) 2010-03-17

Family

ID=8862586

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02290885A Expired - Lifetime EP1253609B1 (en) 2001-04-23 2002-04-09 Sealed operating device for electrical apparatus

Country Status (5)

Country Link
EP (1) EP1253609B1 (en)
AT (1) ATE461520T1 (en)
DE (1) DE60235669D1 (en)
ES (1) ES2342363T3 (en)
FR (1) FR2823905B1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102737873A (en) * 2012-07-09 2012-10-17 张家港华捷电子有限公司 Switch
EP2632002A1 (en) 2012-02-22 2013-08-28 Berker GmbH & Co. KG Sealed electrical appliance with buffer element
EP2632004A1 (en) 2012-02-22 2013-08-28 Berker GmbH & Co. KG Electrical appliance provided with an insert for attaching the lid
CN111776080A (en) * 2015-02-12 2020-10-16 美国iRobot公司 Liquid management for floor traversing robot
EP3840002A1 (en) 2019-12-20 2021-06-23 Legrand France Trim and electrical switch comprising such a trim

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB329447A (en) * 1929-03-27 1930-05-22 Lucas Barrett Improvements in and connected with electric switches
DE1665752A1 (en) * 1966-09-23 1971-01-21 Siemens Ag Encapsulated sealed installation switch
US4370528A (en) * 1981-03-16 1983-01-25 Eaton Corporation Miniature sealed toggle switch
DE29616958U1 (en) * 1996-09-28 1996-11-14 Gira Giersiepen Gmbh & Co Kg, 42477 Radevormwald Sealing arrangement for splash-proof electrical installation devices
EP0878814A1 (en) * 1997-05-12 1998-11-18 SI.BE.R. S.p.A. Switch unit with protection against dust and spray

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB329447A (en) * 1929-03-27 1930-05-22 Lucas Barrett Improvements in and connected with electric switches
DE1665752A1 (en) * 1966-09-23 1971-01-21 Siemens Ag Encapsulated sealed installation switch
US4370528A (en) * 1981-03-16 1983-01-25 Eaton Corporation Miniature sealed toggle switch
DE29616958U1 (en) * 1996-09-28 1996-11-14 Gira Giersiepen Gmbh & Co Kg, 42477 Radevormwald Sealing arrangement for splash-proof electrical installation devices
EP0878814A1 (en) * 1997-05-12 1998-11-18 SI.BE.R. S.p.A. Switch unit with protection against dust and spray

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2632002A1 (en) 2012-02-22 2013-08-28 Berker GmbH & Co. KG Sealed electrical appliance with buffer element
EP2632004A1 (en) 2012-02-22 2013-08-28 Berker GmbH & Co. KG Electrical appliance provided with an insert for attaching the lid
CN102737873A (en) * 2012-07-09 2012-10-17 张家港华捷电子有限公司 Switch
CN102737873B (en) * 2012-07-09 2014-10-15 张家港华捷电子有限公司 Switch
CN111776080A (en) * 2015-02-12 2020-10-16 美国iRobot公司 Liquid management for floor traversing robot
EP3840002A1 (en) 2019-12-20 2021-06-23 Legrand France Trim and electrical switch comprising such a trim
FR3105563A1 (en) * 2019-12-20 2021-06-25 Legrand France Cover and electrical switch comprising such a cover

Also Published As

Publication number Publication date
FR2823905A1 (en) 2002-10-25
ES2342363T3 (en) 2010-07-06
FR2823905B1 (en) 2004-01-30
ATE461520T1 (en) 2010-04-15
EP1253609B1 (en) 2010-03-17
DE60235669D1 (en) 2010-04-29

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