EP0763875A1 - Electrical socket with keying system - Google Patents

Electrical socket with keying system Download PDF

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Publication number
EP0763875A1
EP0763875A1 EP96410092A EP96410092A EP0763875A1 EP 0763875 A1 EP0763875 A1 EP 0763875A1 EP 96410092 A EP96410092 A EP 96410092A EP 96410092 A EP96410092 A EP 96410092A EP 0763875 A1 EP0763875 A1 EP 0763875A1
Authority
EP
European Patent Office
Prior art keywords
openings
pin
socket
lug
cradle
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
EP96410092A
Other languages
German (de)
French (fr)
Other versions
EP0763875B1 (en
Inventor
Paul Luthy
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.)
Schneider Electric SE
Original Assignee
Schneider Electric SE
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Filing date
Publication date
Application filed by Schneider Electric SE filed Critical Schneider Electric SE
Publication of EP0763875A1 publication Critical patent/EP0763875A1/en
Application granted granted Critical
Publication of EP0763875B1 publication Critical patent/EP0763875B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/44—Means for preventing access to live contacts
    • H01R13/447—Shutter or cover plate
    • H01R13/453—Shutter or cover plate opened by engagement of counterpart
    • H01R13/4534—Laterally sliding shutter

Definitions

  • the present invention relates to a polarized electrical outlet arranged to receive a connection plug provided with at least two phase pins and a polarizing pin, this socket comprising an insulating inner housing provided with at least three openings to allow the passage of said phase and polarization pins, these openings being formed through the upper wall of said interior housing, and two of these openings being arranged opposite two phase sockets intended to receive said phase pins of said connection plug, thus that a cover which fits above said inner casing by covering it entirely.
  • This socket can be used in the context of domestic electrical energy distribution networks, or for other applications such as control or telecommunication networks.
  • This socket allows the use of plugs whose contact pins have a standard configuration, but which are original equipped, or may be subsequently, with a polarizing pin.
  • polarized sockets provided with a safety device, in particular for the protection of children, which prevent accidental contact by introduction of a conductive object such as a metal rod.
  • a safety device comprises for example blocking means which close the openings of the socket in the absence of a plug and which only retract if all the pins of a standard plug are introduced simultaneously.
  • Any device fitted with a standard plug can be connected provided that it is fitted with a standard plug.
  • the object of the present invention is to create a keyed socket ensuring a safety function against the introduction of any objects into the openings of the socket and making it possible to assign a network to a given type of devices, these devices being equipped an appropriate plug corresponding to this socket.
  • the electrical outlet according to the invention is characterized in that it comprises a locking device composed of a movable part housed in a cradle interposed between said inner housing and said cover, said cradle being provided with three through openings , two of which correspond to said phase pins and the third corresponds to said keying pin, and said movable part comprising members for masking said through openings when said phase pins and said coding pin are not simultaneously introduced into said socket, said members of said moving part comprising two inclined planes arranged to hide the openings corresponding to the phase pins and a locking lug arranged to hide the opening corresponding to the coding pin.
  • the coded socket 10 as shown in exploded view in FIG. 1, comprises an inner box 11, the upper face of which is provided with four openings 12, 13, 14 and 15.
  • the openings 12, 13 and 14 correspond to parts contact in the form of female sockets intended to receive the male pins of a three-pin connection plug, one of the pins being the pin of earth provided for coupling with the earth socket mounted opposite the opening 14, and the other two pins being phase pins provided for coupling with the phase socket mounted opposite the openings 12 and 13.
  • L 'opening 15 is intended to receive a so-called coding pin which is either present on the plug, or disposed on an intermediate piece as will be explained later.
  • the upper face of the inner box 11 carries a locking device composed of a movable part 16 which is housed in a fixed cradle 17.
  • the cradle 17 also contains two springs 18 which rest on the one hand on two lateral shoulders 19 of the movable part 16 and on the other hand against an inner wall of a peripheral rim 20 of this cradle 17. These springs have the function of pushing back the movable part 16, and tend to maintain two lateral protuberances 21 of this part in abutment the inner walls of two shoulders 22 formed by sections of the rim 20 of the cradle 17.
  • All these components namely the inner housing 11 and the components of the locking device, are mounted inside a cover 23.
  • a removable auxiliary part 24 to be mounted on a standard plug 25 is provided to make this plug standard three pins compatible with the socket according to the invention.
  • FIG. 2 represents the fixed cradle 17 seen from below, and illustrates a housing 36 in which the moving part 16 moves.
  • This cradle comprises a flat wall 30 in which three through openings 31, 32 and 33 are formed which correspond respectively to the openings 12, 13 and 15 of the upper face of the inner housing 11.
  • the flange 20 has in its rear part two housings 34 and 35 which are intended to receive the ends of the two springs 18.
  • the flange 20 defines the two shoulders 22 against which the lateral protuberances 21 of the movable part are pushed into abutment by the springs 18. These shoulders 22 are extended outwards by two retaining fingers 37 each having a beveled end 38 and a guide surface 39 parallel and opposite to the same surface 39 of the other finger.
  • FIG. 3 shows the moving part 16 seen from above.
  • the front of the part is on the right in the drawing.
  • each of the lateral protrusions 21 of the part 16 has, on its upper face, an inclined plane 40 directed towards the rear. Its front face constituting the shoulder 19 is provided with a cylindrical housing 41 for receiving the end of the spring 18.
  • the body of the part 16 comprises two parallel branches 42 separated by a elongated central opening 43 and connected by a front stirrup 44 and a rear crossmember 45. Near its rear end, each branch 42 has a hook 46 capable of hooking on one of the end bevels 38 (FIG. 2) of the cradle 17, as shown in FIG. 4.
  • a locking lug 47 protruding relative to this substantially cylindrical upper face is provided in the middle of the front stirrup 44 and has a surface 48 slightly tilted back.
  • Figures 4 and 5 show the locked position of the movable part 16 inside the cradle 17.
  • Figure 5 shows that the underside of the part 16 is not planar, but has a transverse bead 50 which defines an axis tilting of the part 16 when it rests on the upper wall of the inner housing 11 ( Figure 1).
  • the bearing force F of the springs 18 acting on the protrusions 21 tends to tilt the moving part 16 upwards, so that the lug 47 engages in the through opening 33 of the cradle 17 and is placed against a front edge 51 of this opening, thus locking the part 16 and preventing its movement in the direction opposite to the direction of the force F.
  • the inclined planes 40 of each of the two lateral protuberances 21 of the part 16 are arranged respectively opposite the through openings 31 and 32 of the cradle 17, and seal both these through openings and the openings 12 and 13 of the upper wall of the inner housing 11.
  • the ends of the lateral protuberances 21 provide centering of the part 16 in the cradle 17, by sliding support against the lateral parts of the peripheral rim 20.
  • they provide an orientation of the movable part 16, such that the rear legs 42 of this part are centered between the two opposite guide surfaces 39.
  • the hooks 46 do not touch these surfaces 39, because they are located beyond the ends 38 of the fingers 37 in this locking position.
  • the components of the locking device 16 and 17 are housed between the cover and the internal case 11.
  • the fixed cradle 17 can be fixed to the case 23 by any suitable means, in particular by fitting in corresponding cavities, but it can also be produced as an element integrated into the cover.
  • the latter has externally four inlet openings 52 aligned with the openings 12, 13, 14 and 15 of the inner housing 11, three of them being further aligned with the openings 31, 32 and 33 of the cradle 17.
  • the cover 23 may have an annular collar 53 of standardized shape and dimensions, corresponding to the shape of the plugs to be connected to the socket 10.
  • the plug 25 represented by FIG. 1 is a standard three-pin plug 54, 55 and 56 intended to be engaged in the contact sockets mounted in the inner housing 11 opposite the openings 12, 13 and 14. It is by example of a standardized socket for electrical distribution at 220-240 V.
  • the auxiliary part 24 comprises a plate 57 provided with three holes 58 in which the pins 54 to 56 of the plug 25 can engage, so that the plate 57 can be applied against the body of the plug.
  • the plate 57 On the side opposite the plug, the plate 57 carries a coding pin 59 which, when the auxiliary part 24 is mounted on the plug 25, extends parallel to the pins 54 to 56 and has approximately the same length.
  • the auxiliary part 24, the cover 23, the movable part 16 and the cradle 17 are made of insulating material and are preferably made by molding.
  • the lateral protrusions 21 of the movable part retract forward and allow the pins 54 and 55 to penetrate into the openings 12 and 13 of the inner housing 11 as shown in FIG. 7.
  • the ground pin 56 and the coding pin 59 pass through the central opening 43 of the movable part to enter the openings 14 and 15 of the inner housing 11. Electrical contact can be established between pins 54 to 56 of the plug 25 and the corresponding sockets of this inner box 11.
  • the movable part 16 When the plug is removed, the movable part 16 is released, so that the springs 18 return it to its initial position by movements opposite to the arrows A and B.
  • the inclined surface 48 of the lug 47 serves to pass the lug under the front edge 51 of the opening 33. Then, the lug automatically engages in this opening to lock the moving part.
  • each inclined plane 40 If the thrust exerted on each inclined plane 40 is not symmetrical, even if the lug 47 has been able to disengage from the opening 33, the moving part 16 becomes oblique as shown in FIG. 8 and one of its rear hooks 46 hooks onto the end 38 of the corresponding finger 37 of the fixed cradle 17, thus blocking the moving part. Therefore, the openings 12 and 13 of the inner housing 11 remain closed and access to the sockets mounted inside this housing remains prohibited.
  • the socket according to the invention has means of effective protection against accidental electrical contact, for example if a child tries to introduce an object into one of the openings of the socket.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

The security plug (25) has two mains pins and a security pin. The corresponding socket (23) has three insertion holes, accessing a rocking section (16) held in a holder (17). One end of the rocking section (47) is held in place by a socket spigot (59), whilst the security pin (56) slides along the other end of the rocking socket. Two blocking sections (40) on the rocker are released by the action, allowing the plug insertion in the mains socket.

Description

La présente invention concerne une prise électrique à détrompage agencée pour recevoir une fiche de raccordement pourvue d'au moins deux broches de phases et d'une broche de détrompage, cette prise comportant un boîtier intérieur isolant pourvu d'au moins trois ouvertures pour permettre le passage desdites broches de phases et de détrompage, ces ouvertures étant ménagées à travers la paroi supérieure dudit boîtier intérieur, et deux de ces ouvertures étant disposées en regard de deux douilles de phases destinées à recevoir lesdites broches de phases de ladite fiche de raccordement, ainsi qu'un couvercle qui s'adapte au-dessus dudit boîtier intérieur en le recouvrant entièrement.The present invention relates to a polarized electrical outlet arranged to receive a connection plug provided with at least two phase pins and a polarizing pin, this socket comprising an insulating inner housing provided with at least three openings to allow the passage of said phase and polarization pins, these openings being formed through the upper wall of said interior housing, and two of these openings being arranged opposite two phase sockets intended to receive said phase pins of said connection plug, thus that a cover which fits above said inner casing by covering it entirely.

Cette prise est utilisable dans le cadre de réseaux domestiques de distribution d'énergie électrique, ou pour d'autres applications telles que des réseaux de commande ou de télécommunication. Cette prise permet l'utilisation de fiches dont les broches de contact ont une configuration standard, mais qui sont équipées d'origine, ou peuvent l'être par la suite, d'une broche de détrompage.This socket can be used in the context of domestic electrical energy distribution networks, or for other applications such as control or telecommunication networks. This socket allows the use of plugs whose contact pins have a standard configuration, but which are original equipped, or may be subsequently, with a polarizing pin.

On connaît des prises dites à détrompage pourvues d'un dispositif de sécurité, notamment pour la protection des enfants, qui empêchent un contact accidentel par introduction d'un objet conducteur tel qu'une tige métallique. Un tel dispositif connu comporte par exemple des moyens de blocage qui obturent les ouvertures de la prise en l'absence d'une fiche et qui ne s'escamotent que si toutes les broches d'une fiche standard sont introduites simultanément. N'importe quel appareil équipé d'une fiche standard peut être raccordé à condition d'être équipé d'une fiche standard. Ces prises ne permettent pas l'affectation relative du réseau correspondant à des appareils déterminés équipés d'une fiche adéquate.There are known so-called polarized sockets provided with a safety device, in particular for the protection of children, which prevent accidental contact by introduction of a conductive object such as a metal rod. Such a known device comprises for example blocking means which close the openings of the socket in the absence of a plug and which only retract if all the pins of a standard plug are introduced simultaneously. Any device fitted with a standard plug can be connected provided that it is fitted with a standard plug. These sockets do not allow the relative allocation of the network corresponding to specific devices equipped with an adequate plug.

La présente invention a pour but de créer une prise à détrompage assurant une fonction de sécurité contre l'introduction d'objets quelconques dans les ouvertures de la prise et permettant d'affecter un réseau à un type d'appareils déterminés, ces appareils étant équipés d'une fiche appropriée correspondante à cette prise.The object of the present invention is to create a keyed socket ensuring a safety function against the introduction of any objects into the openings of the socket and making it possible to assign a network to a given type of devices, these devices being equipped an appropriate plug corresponding to this socket.

Dans ce but, la prise électrique selon l'invention est caractérisée en ce qu'elle comporte un dispositif de verrouillage composé d'une pièce mobile logée dans un berceau interposé entre ledit boîtier intérieur et ledit couvercle, ledit berceau étant pourvu de trois ouvertures traversantes, dont deux correspondent auxdites broches de phases et la troisième correspond à ladite broche de détrompage, et ladite pièce mobile comportant des organes pour masquer lesdites ouvertures traversantes lorsque lesdites broches de phases et ladite broche de détrompage ne sont pas introduites simultanément dans ladite prise, lesdits organes de ladite pièce mobile comprenant deux plans inclinés agencés pour masquer les ouvertures correspondant aux broches de phases et un ergot de verrouillage agencé pour masquer l'ouverture correspondant à la broche de détrompage.For this purpose, the electrical outlet according to the invention is characterized in that it comprises a locking device composed of a movable part housed in a cradle interposed between said inner housing and said cover, said cradle being provided with three through openings , two of which correspond to said phase pins and the third corresponds to said keying pin, and said movable part comprising members for masking said through openings when said phase pins and said coding pin are not simultaneously introduced into said socket, said members of said moving part comprising two inclined planes arranged to hide the openings corresponding to the phase pins and a locking lug arranged to hide the opening corresponding to the coding pin.

L'invention sera mieux comprise en référence à la description d'une forme de réalisation préférée, donnée à titre d'exemple non limitatif et aux dessins annexés, dans lesquels :

  • La figure 1 est une vue éclatée en perspective d'un ensemble de connexion électrique comprenant une prise selon l'invention, une fiche et une pièce auxiliaire,
  • La figure 2 est une vue en perspective d'un composant des moyens de verrouillage de la prise selon l'invention,
  • La figure 3 est une vue en perspective d'un autre composant des moyens de verrouillage de la prise selon l'invention,
  • La figure 4 est une vue en perspective des moyens de verrouillage de la prise en position verrouillée,
  • La figure 5 est une vue en coupe longitudinale des moyens de verrouillage de la prise en position verrouillée,
  • La figure 6 est une vue analogue à la figure 5, représentant les moyens de verrouillage en position déverrouillée,
  • La figure 7 est une vue analogue à la figure 4, représentant les moyens de verrouillage en position déverrouillée, et
  • La figure 8 est une vue en plan des moyens de verrouillage illustrant une position de blocage provoquée par l'introduction d'un objet ou d'une fiche non conforme.
The invention will be better understood with reference to the description of a preferred embodiment, given by way of nonlimiting example and to the accompanying drawings, in which:
  • FIG. 1 is an exploded perspective view of an electrical connection assembly comprising a socket according to the invention, a plug and an auxiliary part,
  • FIG. 2 is a perspective view of a component of the socket locking means according to the invention,
  • FIG. 3 is a perspective view of another component of the socket locking means according to the invention,
  • FIG. 4 is a perspective view of the means for locking the socket in the locked position,
  • FIG. 5 is a view in longitudinal section of the means for locking the socket in the locked position,
  • FIG. 6 is a view similar to FIG. 5, showing the locking means in the unlocked position,
  • FIG. 7 is a view similar to FIG. 4, showing the locking means in the unlocked position, and
  • Figure 8 is a plan view of the locking means illustrating a locking position caused by the introduction of a non-conforming object or plug.

La prise à détrompage 10, telle que représentée en vue éclatée par la figure 1, comporte un boîtier intérieur 11 dont la face supérieure est pourvue de quatre ouvertures 12, 13, 14 et 15. Les ouvertures 12, 13 et 14 correspondent à des pièces de contact sous forme de douilles femelles destinées à recevoir les broches mâles d'une fiche de raccordement à trois broches, l'une des broches étant la broche de terre prévue pour s'accoupler avec la douille de terre montée en regard de l'ouverture 14, et les deux autres broches étant des broches de phases prévues pour s'accoupler avec les douilles de phase montées en regard des ouvertures 12 et 13. L'ouverture 15 est destinée à recevoir une broche dite de détrompage qui est, soit présente sur la fiche, soit disposée sur une pièce intermédiaire comme cela sera expliqué par la suite.The coded socket 10, as shown in exploded view in FIG. 1, comprises an inner box 11, the upper face of which is provided with four openings 12, 13, 14 and 15. The openings 12, 13 and 14 correspond to parts contact in the form of female sockets intended to receive the male pins of a three-pin connection plug, one of the pins being the pin of earth provided for coupling with the earth socket mounted opposite the opening 14, and the other two pins being phase pins provided for coupling with the phase socket mounted opposite the openings 12 and 13. L 'opening 15 is intended to receive a so-called coding pin which is either present on the plug, or disposed on an intermediate piece as will be explained later.

La face supérieure du boîtier intérieur 11 porte un dispositif de verrouillage composé d'une pièce mobile 16 qui est logée dans un berceau fixe 17. Le berceau 17 contient également deux ressorts 18 qui s'appuient d'une part sur deux épaulements latéraux 19 de la pièce mobile 16 et d'autre part contre une paroi intérieure d'un rebord périphérique 20 de ce berceau 17. Ces ressorts ont pour fonction de repousser la pièce mobile 16, et tendent à maintenir deux protubérances latérales 21 de cette pièce en appui contre les parois intérieures de deux épaulements 22 formés par des tronçons du rebord 20 du berceau 17.The upper face of the inner box 11 carries a locking device composed of a movable part 16 which is housed in a fixed cradle 17. The cradle 17 also contains two springs 18 which rest on the one hand on two lateral shoulders 19 of the movable part 16 and on the other hand against an inner wall of a peripheral rim 20 of this cradle 17. These springs have the function of pushing back the movable part 16, and tend to maintain two lateral protuberances 21 of this part in abutment the inner walls of two shoulders 22 formed by sections of the rim 20 of the cradle 17.

Tous ces composants, à savoir le boîtier intérieur 11 et les composants du dispositif de verrouillage, sont montés à l'intérieur d'un couvercle 23. Une pièce auxiliaire amovible 24 à monter sur une fiche standard 25 est prévue pour rendre cette fiche standard à trois broches compatibles avec la prise selon l'invention.All these components, namely the inner housing 11 and the components of the locking device, are mounted inside a cover 23. A removable auxiliary part 24 to be mounted on a standard plug 25 is provided to make this plug standard three pins compatible with the socket according to the invention.

La figure 2 représente le berceau fixe 17 vu de dessous, et illustre un logement 36 dans lequel se déplace la pièce mobile 16. Ce berceau comprend une paroi plane 30 dans laquelle sont ménagées trois ouvertures traversantes 31, 32 et 33 qui correspondent respectivement aux ouvertures 12, 13 et 15 de la face supérieure du boîtier intérieur 11. On notera que le rebord 20 comporte dans sa partie arrière deux logements 34 et 35 qui sont destinés à recevoir les extrémités des deux ressorts 18. Dans sa partie frontale, le rebord 20 définit les deux épaulements 22 contre lesquels les protubérances latérales 21 de la pièce mobile sont poussées en butée par les ressorts 18. Ces épaulements 22 se prolongent vers l'extérieur par deux doigts de retenue 37 ayant chacun une extrémité biseautée 38 et une surface de guidage 39 parallèle et opposée à la même surface 39 de l'autre doigt.FIG. 2 represents the fixed cradle 17 seen from below, and illustrates a housing 36 in which the moving part 16 moves. This cradle comprises a flat wall 30 in which three through openings 31, 32 and 33 are formed which correspond respectively to the openings 12, 13 and 15 of the upper face of the inner housing 11. It will be noted that the flange 20 has in its rear part two housings 34 and 35 which are intended to receive the ends of the two springs 18. In its front part, the flange 20 defines the two shoulders 22 against which the lateral protuberances 21 of the movable part are pushed into abutment by the springs 18. These shoulders 22 are extended outwards by two retaining fingers 37 each having a beveled end 38 and a guide surface 39 parallel and opposite to the same surface 39 of the other finger.

La figure 3 représente la pièce mobile 16 vue de dessus. Par convention, l'avant de la pièce se trouve à droite dans le dessin. On remarque que chacune des protubérances latérales 21 de la pièce 16 présente, sur sa face supérieure, un plan incliné 40 dirigé vers l'arrière. Sa face avant constituant l'épaulement 19 est pourvue d'un logement cylindrique 41 pour recevoir l'extrémité du ressort 18. Le corps de la pièce 16 comprend deux branches parallèles 42 séparées par une ouverture centrale allongée 43 et reliées par un étrier avant 44 et une traverse arrière 45. Près de son extrémité arrière, chaque branche 42 présente un crochet 46 susceptible de s'accrocher sur l'un des biseaux d'extrémité 38 (figure 2) du berceau 17, comme le montre la figure 4. Sur la face supérieure plate de la pièce 16, un ergot de verrouillage 47 protubérant par rapport à cette face supérieure sensiblement cylindrique est prévu au milieu de l'étrier avant 44 et présente une surface 48 légèrement inclinée vers l'arrière.Figure 3 shows the moving part 16 seen from above. By convention, the front of the part is on the right in the drawing. Note that each of the lateral protrusions 21 of the part 16 has, on its upper face, an inclined plane 40 directed towards the rear. Its front face constituting the shoulder 19 is provided with a cylindrical housing 41 for receiving the end of the spring 18. The body of the part 16 comprises two parallel branches 42 separated by a elongated central opening 43 and connected by a front stirrup 44 and a rear crossmember 45. Near its rear end, each branch 42 has a hook 46 capable of hooking on one of the end bevels 38 (FIG. 2) of the cradle 17, as shown in FIG. 4. On the flat upper face of the part 16, a locking lug 47 protruding relative to this substantially cylindrical upper face is provided in the middle of the front stirrup 44 and has a surface 48 slightly tilted back.

Les figures 4 et 5 montrent la position verrouillée de la pièce mobile 16 à l'intérieur du berceau 17. La figure 5 montre que la face inférieure de la pièce 16 n'est pas plane, mais présente un bourrelet transversal 50 qui définit un axe de basculement de la pièce 16 lorsqu'elle repose sur la paroi supérieure du boîtier intérieur 11 (figure 1). Dans cette position verrouillée, la force d'appui F des ressorts 18 agissant sur les protubérances 21 tend à faire basculer la pièce mobile 16 vers le haut, si bien que l'ergot 47 s'engage dans l'ouverture traversante 33 du berceau 17 et se place contre un bord frontal 51 de cette ouverture, verrouillant ainsi la pièce 16 et empêchant son déplacement dans le sens opposé à la direction de la force F. Dans cette position verrouillée, les plans inclinés 40 de chacune des deux protubérances latérales 21 de la pièce 16 sont disposés respectivement en regard des ouvertures traversantes 31 et 32 du berceau 17, et obturent à la fois ces ouvertures traversantes et les ouvertures 12 et 13 de la paroi supérieure du boîtier intérieur 11. Les extrémités des protubérances latérales 21 assurent un centrage de la pièce 16 dans le berceau 17, par appui glissant contre les parties latérales du rebord périphérique 20. Tant qu'elles sont appuyées par les ressorts contre les épaulements 22 du berceau 17, elles assurent une orientation de la pièce mobile 16, telle que les branches arrière 42 de cette pièce sont centrées entre les deux surfaces de guidage opposées 39. Par contre, les crochets 46 ne touchent pas ces surfaces 39, car ils sont situés au-delà des extrémités 38 des doigts 37 dans cette position de verrouillage.Figures 4 and 5 show the locked position of the movable part 16 inside the cradle 17. Figure 5 shows that the underside of the part 16 is not planar, but has a transverse bead 50 which defines an axis tilting of the part 16 when it rests on the upper wall of the inner housing 11 (Figure 1). In this locked position, the bearing force F of the springs 18 acting on the protrusions 21 tends to tilt the moving part 16 upwards, so that the lug 47 engages in the through opening 33 of the cradle 17 and is placed against a front edge 51 of this opening, thus locking the part 16 and preventing its movement in the direction opposite to the direction of the force F. In this locked position, the inclined planes 40 of each of the two lateral protuberances 21 of the part 16 are arranged respectively opposite the through openings 31 and 32 of the cradle 17, and seal both these through openings and the openings 12 and 13 of the upper wall of the inner housing 11. The ends of the lateral protuberances 21 provide centering of the part 16 in the cradle 17, by sliding support against the lateral parts of the peripheral rim 20. As long as they are pressed by the springs against the ep wings 22 of the cradle 17, they provide an orientation of the movable part 16, such that the rear legs 42 of this part are centered between the two opposite guide surfaces 39. On the other hand, the hooks 46 do not touch these surfaces 39, because they are located beyond the ends 38 of the fingers 37 in this locking position.

Comme le suggère la vue éclatée de la figure 1, les composants du dispositif de verrouillage 16 et 17 sont logés entre le couvercle et le boîtier intérieur 11. Le berceau fixe 17 peut être fixé au boîtier 23 par tout moyen approprié, notamment par emboîtement dans des cavités correspondantes, mais il peut également être réalisé en tant qu'élément intégré au couvercle. Ce dernier présente extérieurement quatre ouvertures d'entrée 52 alignées avec les ouvertures 12, 13, 14 et 15 du boîtier intérieur 11, trois d'entre elles étant en outre alignées avec les ouvertures 31, 32 et 33 du berceau 17. En outre, le couvercle 23 peut présenter un collet annulaire 53 de forme et de dimensions normalisées, correspondant à la forme des fiches à brancher à la prise 10.As the exploded view of FIG. 1 suggests, the components of the locking device 16 and 17 are housed between the cover and the internal case 11. The fixed cradle 17 can be fixed to the case 23 by any suitable means, in particular by fitting in corresponding cavities, but it can also be produced as an element integrated into the cover. The latter has externally four inlet openings 52 aligned with the openings 12, 13, 14 and 15 of the inner housing 11, three of them being further aligned with the openings 31, 32 and 33 of the cradle 17. In addition, the cover 23 may have an annular collar 53 of standardized shape and dimensions, corresponding to the shape of the plugs to be connected to the socket 10.

La fiche 25 représentée par la figure 1 est une fiche standard à trois broches 54, 55 et 56 destinées à être engagées dans les douilles de contact montées dans le boîtier intérieur 11 en face des ouvertures 12, 13 et 14. Il s'agit par exemple d'une prise normalisée pour la distribution électrique à 220-240 V. La pièce auxiliaire 24 comporte une plaque 57 pourvue de trois trous 58 dans lesquels peuvent s'engager les broches 54 à 56 de la fiche 25, de sorte que la plaque 57 peut être appliquée contre le corps de la fiche. Du côté opposé à la fiche, la plaque 57 porte une broche de détrompage 59 qui, lorsque la pièce auxiliaire 24 est montée sur la fiche 25, s'étend parallèlement aux broches 54 à 56 et présente approximativement la même longueur. Bien entendu, la pièce auxiliaire 24, le couvercle 23, la pièce mobile 16 et le berceau 17 sont en matière isolante et sont réalisés de préférence par moulage.The plug 25 represented by FIG. 1 is a standard three-pin plug 54, 55 and 56 intended to be engaged in the contact sockets mounted in the inner housing 11 opposite the openings 12, 13 and 14. It is by example of a standardized socket for electrical distribution at 220-240 V. The auxiliary part 24 comprises a plate 57 provided with three holes 58 in which the pins 54 to 56 of the plug 25 can engage, so that the plate 57 can be applied against the body of the plug. On the side opposite the plug, the plate 57 carries a coding pin 59 which, when the auxiliary part 24 is mounted on the plug 25, extends parallel to the pins 54 to 56 and has approximately the same length. Of course, the auxiliary part 24, the cover 23, the movable part 16 and the cradle 17 are made of insulating material and are preferably made by molding.

Lorsqu'une fiche standard 25, préalablement équipée de la pièce auxiliaire 24, ou une fiche équipée d'origine d'une broche de détrompage, c'est-à-dire des fiches dont le branchement est autorisé, sont introduites dans la prise 10, cette broche de détrompage 59 entre dans l'ouverture traversante 33 du berceau 17, et bute contre l'ergot 47 de la pièce mobile 16. Cette dernière bascule sur son bourrelet 50 suivant la flèche B jusqu'à la position représentée par la figure 6, où la pièce 16 est déverrouillée, l'ergot 47 étant dégagé de l'ouverture 33. En même temps, les extrémités des deux broches de phase 54 et 55 butent simultanément contre les deux plans inclinés 40 et sont guidées par les ouvertures traversantes 31 et 32, ces deux broches poussent la pièce 16 vers l'avant suivant la flèche A et la déplacent ainsi à l'encontre de la poussée des ressorts 18. Si la fiche est correctement disposée, c'est-à-dire si les broches sont introduites simultanément dans les ouvertures traversantes, la poussée est symétrique sur les deux plans inclinés 40, si bien que la pièce 16 garde son orientation et que ses crochets arrière 46 s'engagent entre les deux doigts du berceau 17, puis guident la pièce en glissant sur les surfaces de guidage 39. Il en résulte que les protubérances latérales 21 de la pièce mobile s'escamotent vers l'avant et laissent pénétrer les broches 54 et 55 dans les ouvertures 12 et 13 du boîtier intérieur 11 comme le montre la figure 7. La broche de terre 56 et la broche de détrompage 59 passent à travers l'ouverture centrale 43 de la pièce mobile pour entrer dans les ouvertures 14 et 15 du boîtier intérieur 11. Le contact électrique peut être établi entre les broches 54 à 56 de la fiche 25 et les douilles correspondantes de ce boîtier intérieur 11.When a standard plug 25, previously fitted with the auxiliary part 24, or a plug originally fitted with a polarizing pin, that is to say plugs the connection of which is authorized, are inserted into the socket 10 , this keying pin 59 enters the through opening 33 of the cradle 17, and abuts against the lug 47 of the movable part 16. The latter rocks on its bead 50 according to arrow B to the position shown in the figure 6, where the part 16 is unlocked, the lug 47 being released from the opening 33. At the same time, the ends of the two phase pins 54 and 55 abut simultaneously against the two inclined planes 40 and are guided by the through openings 31 and 32, these two pins push the part 16 forwards along the arrow A and thus move it against the thrust of the springs 18. If the plug is correctly arranged, that is to say if the pins are introduced simultaneously nt in the through openings, the thrust is symmetrical on the two inclined planes 40, so that the part 16 keeps its orientation and its rear hooks 46 engage between the two fingers of the cradle 17, then guide the part by sliding on the guide surfaces 39. As a result, the lateral protrusions 21 of the movable part retract forward and allow the pins 54 and 55 to penetrate into the openings 12 and 13 of the inner housing 11 as shown in FIG. 7. The ground pin 56 and the coding pin 59 pass through the central opening 43 of the movable part to enter the openings 14 and 15 of the inner housing 11. Electrical contact can be established between pins 54 to 56 of the plug 25 and the corresponding sockets of this inner box 11.

Lorsque la fiche est retirée, la pièce mobile 16 est libérée, si bien que les ressorts 18 la ramènent dans sa position initiale par des mouvements opposés aux flèches A et B. La surface inclinée 48 de l'ergot 47 sert à faire passer l'ergot sous le bord avant 51 de l'ouverture 33. Ensuite, l'ergot s'engage automatiquement dans cette ouverture pour verrouiller la pièce mobile.When the plug is removed, the movable part 16 is released, so that the springs 18 return it to its initial position by movements opposite to the arrows A and B. The inclined surface 48 of the lug 47 serves to pass the lug under the front edge 51 of the opening 33. Then, the lug automatically engages in this opening to lock the moving part.

Si la poussée exercée sur chaque plan incliné 40 n'est pas symétrique, même si l'ergot 47 a pu se dégager de l'ouverture 33, la pièce mobile 16 se met en biais comme le montre la figure 8 et l'un de ses crochets arrière 46 s'accroche à l'extrémité 38 du doigt correspondant 37 du berceau fixe 17, bloquant ainsi la pièce mobile. De ce fait, les ouvertures 12 et 13 du boîtier intérieur 11 restent obturées et l'accès aux douilles montées à l'intérieur de ce boîtier reste interdit.If the thrust exerted on each inclined plane 40 is not symmetrical, even if the lug 47 has been able to disengage from the opening 33, the moving part 16 becomes oblique as shown in FIG. 8 and one of its rear hooks 46 hooks onto the end 38 of the corresponding finger 37 of the fixed cradle 17, thus blocking the moving part. Therefore, the openings 12 and 13 of the inner housing 11 remain closed and access to the sockets mounted inside this housing remains prohibited.

Ainsi, la prise selon l'invention dispose de moyens de protection efficace contre un contact électrique accidentel, par exemple si un enfant tente d'introduire un objet dans l'une des ouvertures de la prise.Thus, the socket according to the invention has means of effective protection against accidental electrical contact, for example if a child tries to introduce an object into one of the openings of the socket.

Claims (6)

Prise électrique à détrompage agencée pour recevoir une fiche de raccordement pourvue d'au moins deux broches de phases et d'une broche de détrompage, cette prise comportant un boîtier intérieur isolant pourvu d'au moins trois ouvertures pour permettre le passage desdites broches de phases et de détrompage, ces ouvertures étant ménagées à travers la paroi supérieure dudit boîtier intérieur, et deux de ces ouvertures étant disposées en regard de deux douilles de phases destinées à recevoir lesdites broches de phases de ladite fiche de raccordement, ainsi qu'un couvercle qui s'adapte au-dessus dudit boîtier intérieur en le recouvrant entièrement, caractérisée en ce qu'elle comporte un dispositif de verrouillage composé d'une pièce mobile (16) logée dans un berceau (17) interposé entre ledit boîtier intérieur (11) et ledit couvercle (23), ledit berceau (17) étant pourvu de trois ouvertures traversantes (31, 32 et 33), dont deux (31, 32) correspondent auxdites broches de phases et la troisième (33) correspond à ladite broche de détrompage, et ladite pièce mobile comportant des organes pour masquer lesdites ouvertures traversantes lorsque lesdites broches de phases et ladite broche de détrompage ne sont pas introduites simultanément dans ladite prise, lesdits organes de ladite pièce mobile (16) comprenant deux plans inclinés (40) agencés pour masquer les ouvertures (31, 32) correspondant aux broches de phases et un ergot (47) de verrouillage agencé pour masquer l'ouverture (33) correspondant à la broche de détrompage.Keyed electrical socket arranged to receive a connection plug provided with at least two phase pins and a polarizing pin, this socket comprising an insulating inner box provided with at least three openings to allow the passage of said phase pins and polarizing, these openings being formed through the upper wall of said inner housing, and two of these openings being arranged opposite two phase sockets intended to receive said phase pins of said connection plug, as well as a cover which adapts above said inner casing by completely covering it, characterized in that it comprises a locking device composed of a movable part (16) housed in a cradle (17) interposed between said inner casing (11) and said cover (23), said cradle (17) being provided with three through openings (31, 32 and 33), two of which (31, 32) correspond to said s phase pins and the third (33) corresponds to said polarization pin, and said moving part comprising members for masking said through openings when said phase pins and said polarization pin are not introduced simultaneously into said socket, said members of said movable part (16) comprising two inclined planes (40) arranged to mask the openings (31, 32) corresponding to the phase pins and a locking lug (47) arranged to mask the opening (33) corresponding to the pin coding. Prise électrique selon la revendication 1, caractérisée en ce que ledit ergot (47) est agencé pour s'engager dans l'ouverture traversante (33) correspondant à la broche de détrompage et pour buter contre un bord frontal (51) de cette ouverture lorsque la pièce mobile (16) est déplacée dans un sens, ledit ergot étant équipé d'une surface inclinée (48) destinée à dégager l'ergot de l'ouverture traversante (33) lorsque la pièce mobile (16) est déplacée dans le sens opposé.Electrical outlet according to claim 1, characterized in that said lug (47) is arranged to engage in the through opening (33) corresponding to the polarizing pin and to abut against a front edge (51) of this opening when the moving part (16) is moved in one direction, said lug being equipped with an inclined surface (48) intended to release the lug from the through opening (33) when the moving part (16) is moved in the direction opposite. Prise électrique selon la revendication 2, caractérisée en ce que ladite pièce mobile (16) comporte un bourrelet transversal (50) ménagé sur sa face inférieure, et définissant un axe de basculement pour permettre le dégagement de l'ergot (47) hors de l'ouverture traversante (33) correspondant à la broche de détrompage.Electrical outlet according to claim 2, characterized in that said movable part (16) comprises a transverse bead (50) formed on its lower face, and defining a tilting axis to allow the release of the lug (47) out of the through opening (33) corresponding to the coding pin. Prise électrique selon la revendication 1, caractérisée en ce que ladite pièce mobile (16) comporte deux branches parallèles (42) séparées par une ouverture centrale allongée (43) et reliées par un étrier avant (44) qui porte ledit ergot (47) et par une traverse arrière (45), chacune de ces branches présentant un crochet (46) agencé pour bloquer ladite pièce mobile (16) lorsque les broches de phases ne sont pas introduites simultanément dans les ouvertures traversantes (31, 32) correspondantes du berceau (17).Electrical outlet according to claim 1, characterized in that said movable part (16) has two parallel branches (42) separated by an elongated central opening (43) and connected by a front stirrup (44) which carries said lug (47) and by a rear crossmember (45), each of these branches having a hook (46) arranged to block said moving part (16) when the phase pins are not simultaneously introduced into the corresponding through openings (31, 32) of the cradle (17). Prise électrique selon la revendication 2, caractérisée en ce que les plans inclinés (40) sont respectivement disposés sur deux protubérances latérales (21) de ladite pièce mobile (16).Electrical outlet according to claim 2, characterized in that the inclined planes (40) are respectively arranged on two lateral protuberances (21) of said movable part (16). Prise électrique selon la revendication 1, caractérisée en ce que le dispositif de verrouillage comporte en outre des moyens ressorts (18) agencés pour pousser ladite pièce mobile (16) en appui contre une paroi intérieure du berceau (17) dans une position de verrouillage des ouvertures traversantes (31, 32, 33) correspondant respectivement aux broches de phases et à la broche de détrompage.Electrical outlet according to claim 1, characterized in that the locking device further comprises spring means (18) arranged to push said moving part (16) in abutment against an interior wall of the cradle (17) in a position for locking the through openings (31, 32, 33) corresponding respectively to the phase pins and the coding pin.
EP19960410092 1995-09-15 1996-08-28 Electrical socket with security system Expired - Lifetime EP0763875B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9511063 1995-09-15
FR9511063A FR2738955B1 (en) 1995-09-15 1995-09-15 FIXED ELECTRICAL OUTLET

Publications (2)

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EP0763875A1 true EP0763875A1 (en) 1997-03-19
EP0763875B1 EP0763875B1 (en) 1999-06-23

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ES (1) ES2135860T3 (en)
FR (1) FR2738955B1 (en)

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WO2000042680A1 (en) * 1999-01-12 2000-07-20 Venue Revenue Services International Limited Electrical assemblies
EP1137109A2 (en) * 2000-03-23 2001-09-26 KID-Systeme GmbH Protection socket including security device for aircrafts
FR2810461A1 (en) * 2000-06-16 2001-12-21 Legrand Sa Current socket security obscurer having obscurer section providing secure access closure position blocked and earth pin flexible deformation freeing obscurer.
FR2810460A1 (en) * 2000-06-16 2001-12-21 Legrand Sa Secure electrical socket having security obscurer closed position blocked/contact earth set earth pin elastic deformation freeing security obscurer.
FR2828339A1 (en) * 2001-08-01 2003-02-07 Legrand Sa CONNECTION SYSTEM FOR A SPECIFIC CURRENT DISTRIBUTION NETWORK AND CORRESPONDING ADAPTER FOR CORRESPONDING PLUG EARTH AND SOCKET
FR2833111A1 (en) * 2001-12-05 2003-06-06 Legrand Sa SOCKET SOCKET WITH POCKET SHUTTER AND RANGE COMPRISING SUCH A SOCKET
US6599141B2 (en) 2001-04-27 2003-07-29 General Dynamics Ots (Aerospace), Inc. Apparatus for providing AC power to airborne in-seat power systems
EP1593975A1 (en) * 2004-05-05 2005-11-09 ABB PATENT GmbH Electricity meter assembly
EP1544629B1 (en) * 2003-12-17 2016-06-15 Hager Electro GmbH Connecting device for an electricity meter

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ES2147706B1 (en) * 1998-03-20 2001-04-01 Interlander Patermann S L MODULAR PLUG ASSEMBLY FOR SURFACE MECHANISMS.
DE19849883B4 (en) * 1998-10-29 2005-06-30 Merten Gmbh & Co. Kg Electric socket with a child safety lock
DE102004002856A1 (en) * 2003-12-17 2005-07-21 Hager Electro Gmbh Electricity meter connecting device has an additional cable channel for routing low voltage and control cables, with said channel being covered by the meter when it is in its mounted position
DE102004025605A1 (en) * 2004-04-16 2005-11-03 Hager Electro Gmbh Connecting device for an electricity meter
DE102004022128A1 (en) * 2004-05-05 2005-12-01 Abb Patent Gmbh Power meter device

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Publication number Priority date Publication date Assignee Title
WO2000042680A1 (en) * 1999-01-12 2000-07-20 Venue Revenue Services International Limited Electrical assemblies
GB2363918A (en) * 1999-01-12 2002-01-09 Venue Revenue Services Interna Electrical Assemblies
US6425773B2 (en) 2000-03-23 2002-07-30 Kid-Systeme Gmbh Electrical outlet with protective cover
EP1137109A2 (en) * 2000-03-23 2001-09-26 KID-Systeme GmbH Protection socket including security device for aircrafts
DE10014500C1 (en) * 2000-03-23 2001-10-04 Kid Systeme Gmbh Protective socket with safety device
EP1137109A3 (en) * 2000-03-23 2003-11-19 KID-Systeme GmbH Protection socket including security device for aircrafts
FR2810461A1 (en) * 2000-06-16 2001-12-21 Legrand Sa Current socket security obscurer having obscurer section providing secure access closure position blocked and earth pin flexible deformation freeing obscurer.
FR2810460A1 (en) * 2000-06-16 2001-12-21 Legrand Sa Secure electrical socket having security obscurer closed position blocked/contact earth set earth pin elastic deformation freeing security obscurer.
US6599141B2 (en) 2001-04-27 2003-07-29 General Dynamics Ots (Aerospace), Inc. Apparatus for providing AC power to airborne in-seat power systems
FR2828339A1 (en) * 2001-08-01 2003-02-07 Legrand Sa CONNECTION SYSTEM FOR A SPECIFIC CURRENT DISTRIBUTION NETWORK AND CORRESPONDING ADAPTER FOR CORRESPONDING PLUG EARTH AND SOCKET
FR2833111A1 (en) * 2001-12-05 2003-06-06 Legrand Sa SOCKET SOCKET WITH POCKET SHUTTER AND RANGE COMPRISING SUCH A SOCKET
EP1318569A1 (en) * 2001-12-05 2003-06-11 Legrand Electrical socket with socket shutter and range comprising such a socket
EP1544629B1 (en) * 2003-12-17 2016-06-15 Hager Electro GmbH Connecting device for an electricity meter
EP1593975A1 (en) * 2004-05-05 2005-11-09 ABB PATENT GmbH Electricity meter assembly

Also Published As

Publication number Publication date
DE69602997D1 (en) 1999-07-29
ES2135860T3 (en) 1999-11-01
FR2738955B1 (en) 1997-10-24
DE69602997T2 (en) 2000-02-17
FR2738955A1 (en) 1997-03-21
EP0763875B1 (en) 1999-06-23

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