EP3317926B1 - Electrical plug and socket assembly - Google Patents

Electrical plug and socket assembly Download PDF

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Publication number
EP3317926B1
EP3317926B1 EP16748325.4A EP16748325A EP3317926B1 EP 3317926 B1 EP3317926 B1 EP 3317926B1 EP 16748325 A EP16748325 A EP 16748325A EP 3317926 B1 EP3317926 B1 EP 3317926B1
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EP
European Patent Office
Prior art keywords
air
magnetic part
gap surface
magnetic
ferromagnetic
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EP16748325.4A
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German (de)
French (fr)
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EP3317926A1 (en
Inventor
Jean-Paul Yonnet
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Gulplug SAS
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Gulplug SAS
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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
    • 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
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/6205—Two-part coupling devices held in engagement by a magnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]

Definitions

  • the present invention relates to an electrical outlet assembly.
  • the electrical outlet assembly includes a base and an electrical plug intended to be fitted to the base. The association of the plug and the base is carried out by magnetic effect.
  • the patent application WO2012032230A1 describes an electrical outlet assembly comprising a base and an electrical plug adapted to fit on the base.
  • the plug has two electrical tracks intended to be electrically connected to two electrical contacts of the base.
  • the two electrical contacts have the particularity of moving between a retracted position inside the base and a position outside the base so as to prevent any access to the contacts when the device to be connected is not in use.
  • magnetic control means comprising a permanent magnet integrated in the plug and a movable magnetic element housed in the base and integral with the electrical contacts, allow the electrical contacts to be extracted from the base.
  • the magnetic element and the permanent magnet are both annular in shape and face each other so as to generate a circular air gap between them. In this solution, the lines of the magnetic field created by the permanent magnet are concentrated in the air gap but loop in the air to join the opposite face of the permanent magnet, making the magnetic solution inefficient.
  • the patent application FR3012263A1 describes yet another architecture of an electrical outlet assembly which has drawbacks similar to those of the demand solution EP2667459A1 .
  • the proposed solution defines two separate air gaps, which can lead to more magnetic leaks.
  • the object of the invention is to provide an electrical outlet assembly which is simple, reliable, compact and which comprises a base and an electrical plug in which the quantity of magnet to be used to extract the electrical contacts is reduced. compared to the solutions of the state of the art.
  • the solution of the invention makes it possible in particular to better confine the magnetic field between the two parts of the assembly of the invention.
  • the first ferromagnetic part is of annular shape and arranged parallel to the junction plane and in that the second ferromagnetic part is of annular shape arranged parallel to the junction plane.
  • the permanent magnet is for example fixed to a first annular portion of the second ferromagnetic part, forming the first air gap surface of the second magnetic part.
  • the permanent magnet is for example fixed to a first annular portion of the first ferromagnetic part, forming the first air gap surface of the first magnetic part.
  • the plug comprises a housing and the second magnetic part is arranged to rotate freely inside the housing.
  • the first magnetic part and the second magnetic part are arranged so that the magnetic circuit generates a magnetic flux surrounding the first electrical contacts and the second electrical contacts.
  • the letter N designates the North pole of the magnet and the letter S designates the South pole of the magnet.
  • the electrical outlet assembly of the invention comprises a base 1 and an electrical plug 2 intended to fit on the base 1.
  • the base 1 comprises a plastic housing 10 intended for example to be embedded in a wall.
  • the base 1 has a front face 11 against which the electrical plug can fit.
  • the base also comprises a movable support 12 on which are fixed two first electrical contacts 120, 121.
  • the first two contacts electrical wires 120, 121 are connected to an electrical voltage source by means of conductive electrical wires (not shown in the figures).
  • the base 1 also comprises a first movable magnetic part 13 integral in movement with the movable support 12 and arranged to move by magnetic effect between a first position and a second position.
  • a spring 14 positioned inside the housing 10 of the base is arranged to return the first magnetic part 13 to its first position when the magnetic effect required for extraction is no longer significant enough.
  • the first electrical contacts 120, 121 are retracted inside the base 1 and in the second position of the first magnetic part 13, the first electrical contacts 120, 121 are at the exterior of the base 1, passing through its front face 11.
  • the movable assembly formed by the support 12 and the magnetic part 13 comes into abutment, for example against a part of the housing 10.
  • the electrical plug 2 for its part comprises a plastic casing 20, having a front face 21 intended to bear against the front face 11 of the base 1, defining a junction plane P (defined vertically in the appended figures) between the base 1 and the plug 2.
  • the plug 2 further comprises two second electrical contacts 220, 221, for example two electrical tracks flush with its front face 21, intended to come into electrical contact with the two first electrical contacts 120, 121 of the base 1.
  • It also comprises a second magnetic part 23 intended to attract the first magnetic part 13 when the plug 2 is approached from the base 1 in order to extract the first electrical contacts 120, 121.
  • the two electrical tracks are of circular shape and positioned so as to concentric way.
  • the invention aims to create a magnetic circuit making it possible to provide a sufficiently large magnetic force against the force exerted by the spring 14, to extract the electrical contacts 120, 121 from the base 1.
  • the magnetic circuit is generated between the two magnetic parts 13, 23 when the plug 2 is approached sufficiently close to the base 1.
  • the two magnetic parts 13, 23 are formed and arranged so that the magnetic circuit is generated around the first electrical contacts 120, 121 and the second electrical contacts 220, 221 when these are connected.
  • the first magnetic part 13 has a first air gap surface S1, a second air gap surface S10 and a first ferromagnetic part 130 attached. on the one hand on a surface opposite to its first air gap surface S1 and on the other hand on a surface opposite to its second air gap surface S10.
  • the second magnetic part 23 comprises a first air gap surface S2 intended to be opposite the first air gap surface S1 of the first magnetic part 13 so as to create a first air gap and a second air gap surface S20 intended to be opposite the second air gap surface S10 of the first magnetic part 13 so as to create a second air gap when the plug 2 is approached from the base 1.
  • the second magnetic part 23 also comprises a second ferromagnetic part 230 fixed on the one hand on a surface opposite to its first air gap surface S2 and on the other hand on a surface opposite to its second air gap surface S20.
  • each magnetic part 13, 23 the two ferromagnetic parts 130, 230 make it possible to channel the magnetic flux between the two air gap surfaces when the plug is approached to the base.
  • the magnetic circuit is generated so that, even when the first magnetic part 13 is still in its first position, the first magnetic part 13 and the second magnetic part 23 are arranged so as to promote the passage of a magnetic flux ⁇ through the first air gap and the second air gap rather than between the two air gap surfaces S1, S10 (or S2, S20) of the same magnetic part 13 (or 23).
  • the air gap surfaces are positioned so as to avoid any looping of the lines of the magnetic field between these two surfaces.
  • the two annular ferromagnetic parts 130, 230 are positioned coaxially in order to allow rotation of the plug 2 with respect to the base 1, making the angular positioning of the plug 2 with respect to the base 1 independent. This advantage is only allowed if the electrical tracks of the plug 2 are circular and positioned concentrically.
  • the second magnetic part 23 is arranged inside the housing 20 of the plug so as to be able to rotate freely inside the housing 20 in order to orient itself with respect to the first magnetic part 13.
  • the two ferromagnetic parts 130, 230 may or may not be of identical sizes.
  • the two ferromagnetic parts of annular shape are of constant thickness over their entire circumference.
  • Each ferromagnetic part 130, 230 of annular shape comprises a first annular portion extending over a first angular range and a second annular portion extending over a second angular range.
  • the two annular portions are distinct and for example positioned symmetrically with respect to a transverse plane of symmetry of the ferromagnetic part.
  • each annular portion occupies an angular range less than 180 ° and for example approximately equal to 120 °.
  • each annular portion is covered with a permanent magnet 15, 16, 25, 26 and / or an element made of ferromagnetic material 150, 160, 260 in excess thickness compared to the thickness of the ring formed by the ferromagnetic part.
  • the permanent magnet or the element made of ferromagnetic material is each intended to form an air gap surface of the magnetic part 13, 23, as defined above.
  • the assembly comprises at least one permanent magnet fixed to an annular portion of the first ferromagnetic part 130 or of the second ferromagnetic part 230 so as to generate the magnetic circuit.
  • Each permanent magnet is produced in the form of a ring portion intended to cover an annular portion of the ferromagnetic part to which it is fixed. It is arranged so as to have a first pole face against the ferromagnetic part and a second pole face oriented towards the front face 11, 21 of the plug or the base. The orientation of the pole faces of the permanent magnet determines the direction of the magnetic flux ⁇ generated in the magnetic circuit.
  • each permanent magnet employed can be fixed on the first ferromagnetic part 130 or on the second ferromagnetic part 230.
  • the magnetic circuit has only one permanent magnet 25.
  • the permanent magnet 25 is fixed to the first annular portion of the second ferromagnetic part 230. Its second pole face corresponds to the first air gap surface S2 of the second magnetic part 23.
  • the second air gap surface S20 of the second magnetic part 23 is formed by an element of ferromagnetic material 260 fixed on the second ferromagnetic part 230 on the second annular portion of the second ferromagnetic part 230.
  • the first air gap surface S1 and the second air gap surface S10 of the first magnetic part 13 are both formed by elements made of ferromagnetic material 150, 160 each fixed on the two distinct annular portions of the first ferromagnetic part 130.
  • the permanent magnet 25 and each magnetic element are positioned so as to generate the air gaps defined above when the plug is approached to the base.
  • the magnetic flux ⁇ generated by the permanent magnet 25 passes through the permanent magnet between these two pole faces then circulates through the first air gap to the element 150, then parallel and in the same direction through the two lateral portions of the first ferromagnetic part 130 to join the element 160, the second air gap surface S10 of the first magnetic part, then crosses the second air gap to join the element 260, before joining the first pole face of the permanent magnet 25 passing parallel and in the same direction through the two side portions of the second ferromagnetic part 230.
  • the two ferromagnetic parts 130, 230 annular are not necessarily identical.
  • a second permanent magnet 26 is fixed on the second ferromagnetic part 230, replacing its magnetic element 260.
  • the second permanent magnet 26 is fixed so that its pole faces are oriented. unlike those of the first permanent magnet 25 so as to promote the magnetic flux ⁇ in the magnetic circuit.
  • this second architecture has the advantage of balancing the magnetic force exerted when the plug is approached to the basement.
  • the magnetic flux generated follows the same path as in the first architecture.
  • the second magnetic part 23 is identical to that of the first architecture described above.
  • the first magnetic part 13 present in the base 1 comprises for its part a permanent magnet 15 fixed on one of its annular portions defined above so as to form the first air gap surface S1 located opposite that produced by the permanent magnet 25 of the second magnetic part 23.
  • the second air gap surface S10 is produced by means of an element 160 made of magnetic material.
  • the two ferromagnetic parts 130, 230 of annular shape are of identical size.
  • This architecture has the advantage of allowing automatic centering of the plug 2 on the base 1, thanks to the two permanent magnets 15, 25 distributed in the base 1 and the plug 2.
  • the magnetic flux generated follows the same path as in the first architecture.
  • the two annular portions of the first ferromagnetic part 13 are each occupied by a permanent magnet 15, 16 and the two annular portions of the second ferromagnetic part are each also occupied by a permanent magnet 25, 26, thus forming two to two the two air gaps of the magnetic circuit when the plug 2 is approached to the base 1.
  • This configuration has the advantage of efficient self-centering and a balanced magnetic force, the four magnets 15, 16, 25, 26 being distributed symmetrically when the plug is approached to the base.
  • the two ferromagnetic parts 130, 230 of annular shape are of identical sizes.
  • the magnetic flux generated follows the same path as in the first architecture.

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Description

Domaine technique de l'inventionTechnical field of the invention

La présente invention se rapporte à un ensemble de prise électrique. L'ensemble de prise électrique comporte un socle et une fiche électrique destinée à être adaptée sur le socle. L'association de la fiche et du socle est réalisée par effet magnétique.The present invention relates to an electrical outlet assembly. The electrical outlet assembly includes a base and an electrical plug intended to be fitted to the base. The association of the plug and the base is carried out by magnetic effect.

Etat de la techniqueState of the art

La demande de brevet WO2012032230A1 décrit un ensemble de prise électrique comprenant un socle et une fiche électrique destinée à s'adapter sur le socle. La fiche comporte deux pistes électriques destinées à se connecter électriquement à deux contacts électriques du socle. Les deux contacts électriques présentent la particularité de se déplacer entre une position rétractée à l'intérieur du socle et une position à l'extérieur du socle de manière à empêcher tout accès aux contacts lorsque l'appareil à connecter n'est pas employé. Lorsque la fiche est approchée du socle, des moyens magnétiques de commande, comprenant un aimant permanent intégré dans la fiche et un élément magnétique mobile logé dans le socle et solidaire des contacts électriques, permettent l'extraction des contacts électriques du socle. L'élément magnétique et l'aimant permanent sont tous deux de forme annulaire et se font face de manière à générer entre eux un entrefer circulaire. Dans cette solution, les lignes du champ magnétique créé par l'aimant permanent sont concentrées dans l'entrefer mais se rebouclent dans l'air pour rejoindre la face opposée de l'aimant permanent, rendant la solution magnétique peu efficace.The patent application WO2012032230A1 describes an electrical outlet assembly comprising a base and an electrical plug adapted to fit on the base. The plug has two electrical tracks intended to be electrically connected to two electrical contacts of the base. The two electrical contacts have the particularity of moving between a retracted position inside the base and a position outside the base so as to prevent any access to the contacts when the device to be connected is not in use. When the plug is approached to the base, magnetic control means, comprising a permanent magnet integrated in the plug and a movable magnetic element housed in the base and integral with the electrical contacts, allow the electrical contacts to be extracted from the base. The magnetic element and the permanent magnet are both annular in shape and face each other so as to generate a circular air gap between them. In this solution, the lines of the magnetic field created by the permanent magnet are concentrated in the air gap but loop in the air to join the opposite face of the permanent magnet, making the magnetic solution inefficient.

La demande de brevet EP2667459A1 décrit également un ensemble de prise électrique comprenant un socle et une fiche électrique destinée à s'adapter sur le socle. Ce document décrit une architecture magnétique améliorée pour l'extraction des contacts électriques. Cette architecture est basée sur la création d'un circuit magnétique entre la fiche et le socle et comprend une culasse magnétique formée d'une première partie logée dans la fiche et d'une deuxième partie logée dans le socle. Lorsque la fiche est éloignée du socle, les lignes du champ magnétique créé par l'aimant permanent présent dans la fiche ont tendance à se reboucler dans le circuit magnétique de la fiche. Ainsi, lorsque la fiche est approchée du socle, l'effet magnétique sera atténué et la quantité d'aimant à utiliser pour réaliser l'extraction des contacts électriques devra être plus importante. Par ailleurs, en plus d'un souci d'efficacité magnétique, cette architecture comporte deux autres inconvénients :

  • La présence de trois entrefers distincts, la rendant plus complexe et génératrice de fuites magnétiques plus nombreuses,
  • La présence de la culasse magnétique à l'extérieur engendre un encombrement important.
The patent application EP2667459A1 also describes an electrical outlet assembly comprising a base and an electrical plug adapted to fit on the base. This document describes an improved magnetic architecture for extracting electrical contacts. This architecture is based on the creation of a magnetic circuit between the plug and the base and comprises a magnetic yoke formed of a first part housed in the plug and a second part housed in the base. When the plug is moved away from the socket, the lines of the magnetic field created by the permanent magnet present in the plug tend to loop back into the magnetic circuit of the plug. Thus, when the plug is approached to the base, the magnetic effect will be attenuated and the quantity of magnet to be used to extract the electrical contacts will have to be greater. Moreover, in addition to a concern for magnetic efficiency, this architecture has two other drawbacks:
  • The presence of three distinct air gaps, making it more complex and generating more magnetic leaks,
  • The presence of the magnetic yoke on the outside creates a significant bulk.

La demande de brevet FR3012263A1 décrit encore une autre architecture d'un ensemble de prise électrique qui présente des inconvénients similaires à ceux de la solution de la demande EP2667459A1 . En particulier, la solution proposée définit deux entrefers distincts, pouvant amener des fuites magnétiques plus nombreuses.The patent application FR3012263A1 describes yet another architecture of an electrical outlet assembly which has drawbacks similar to those of the demand solution EP2667459A1 . In particular, the proposed solution defines two separate air gaps, which can lead to more magnetic leaks.

Le but de l'invention est de proposer un ensemble de prise électrique qui soit simple, fiable, peu encombrant et qui comprend un socle et une fiche électrique dans lequel la quantité d'aimant à utiliser pour réaliser l'extraction des contacts électriques est réduite par rapport aux solutions de l'état de la technique. La solution de l'invention permet notamment de mieux confiner le champ magnétique entre les deux parties de l'ensemble de l'invention.The object of the invention is to provide an electrical outlet assembly which is simple, reliable, compact and which comprises a base and an electrical plug in which the quantity of magnet to be used to extract the electrical contacts is reduced. compared to the solutions of the state of the art. The solution of the invention makes it possible in particular to better confine the magnetic field between the two parts of the assembly of the invention.

Exposé de l'inventionDisclosure of the invention

Ce but est atteint par un ensemble de prise électrique selon la revendication 1.This object is achieved by an electrical outlet assembly according to claim 1.

Selon une autre particularité, la première pièce ferromagnétique est de forme annulaire et agencée parallèlement au plan de jonction et en ce que la deuxième pièce ferromagnétique est de forme annulaire agencée parallèlement au plan de jonction.According to another particularity, the first ferromagnetic part is of annular shape and arranged parallel to the junction plane and in that the second ferromagnetic part is of annular shape arranged parallel to the junction plane.

Dans une première configuration, l'aimant permanent est par exemple fixé sur une première portion annulaire de la deuxième pièce ferromagnétique, formant la première surface d'entrefer de la deuxième partie magnétique.In a first configuration, the permanent magnet is for example fixed to a first annular portion of the second ferromagnetic part, forming the first air gap surface of the second magnetic part.

Selon une première architecture liée à la première configuration, l'ensemble comporte :

  • un élément en matériau ferromagnétique fixé sur une deuxième portion annulaire, symétriquement à l'aimant permanent, de manière à former la deuxième surface d'entrefer de la deuxième partie magnétique,
  • deux éléments en matériau ferromagnétique fixés symétriquement sur deux portions annulaires de la première pièce ferromagnétique, formant la première surface d'entrefer et la deuxième surface d'entrefer de la première partie magnétique.
According to a first architecture linked to the first configuration, the assembly comprises:
  • an element made of ferromagnetic material fixed to a second annular portion, symmetrically to the permanent magnet, so as to form the second air gap surface of the second magnetic part,
  • two elements of ferromagnetic material fixed symmetrically on two annular portions of the first ferromagnetic part, forming the first air gap surface and the second air gap surface of the first magnetic part.

Selon une deuxième architecture liée à la première configuration, l'ensemble comporte :

  • un aimant permanent fixé sur une deuxième portion annulaire de la deuxième pièce ferromagnétique, formant la deuxième surface d'entrefer de la deuxième partie magnétique,
  • deux éléments en matériau ferromagnétique fixés symétriquement sur deux portions annulaires de la première pièce ferromagnétique, formant la première surface d'entrefer et la deuxième surface d'entrefer de la première partie magnétique.
According to a second architecture linked to the first configuration, the assembly comprises:
  • a permanent magnet fixed to a second annular portion of the second ferromagnetic part, forming the second air gap surface of the second magnetic part,
  • two elements of ferromagnetic material fixed symmetrically on two annular portions of the first ferromagnetic part, forming the first air gap surface and the second air gap surface of the first magnetic part.

Selon une troisième architecture liée à la première configuration, l'ensemble comporte :

  • un aimant permanent fixé sur une deuxième portion annulaire de la deuxième pièce ferromagnétique, formant la deuxième surface d'entrefer de la deuxième partie magnétique,
  • deux aimants permanents fixés symétriquement sur deux portions annulaires de la première pièce ferromagnétique, formant la première surface d'entrefer et la deuxième surface d'entrefer de la première partie magnétique.
According to a third architecture linked to the first configuration, the assembly comprises:
  • a permanent magnet fixed to a second annular portion of the second ferromagnetic part, forming the second air gap surface of the second magnetic part,
  • two permanent magnets fixed symmetrically on two annular portions of the first ferromagnetic part, forming the first air gap surface and the second air gap surface of the first magnetic part.

Selon une quatrième architecture liée à la première configuration, l'ensemble comporte :

  • un élément en matériau ferromagnétique fixé sur une deuxième portion annulaire, symétriquement à l'aimant permanent, de manière à former la deuxième surface d'entrefer de la deuxième partie magnétique,
  • un aimant permanent fixé sur une première portion annulaire de la première pièce ferromagnétique formant la première surface d'entrefer de la première partie magnétique,
  • un élément en matériau ferromagnétique fixé sur une deuxième portion annulaire de la première pièce ferromagnétique, symétriquement à l'aimant permanent, de manière à former la deuxième surface d'entrefer de la première partie magnétique.
According to a fourth architecture linked to the first configuration, the assembly comprises:
  • an element made of ferromagnetic material fixed to a second annular portion, symmetrically to the permanent magnet, so as to form the second air gap surface of the second magnetic part,
  • a permanent magnet fixed to a first annular portion of the first ferromagnetic part forming the first air gap surface of the first magnetic part,
  • an element made of ferromagnetic material fixed to a second annular portion of the first ferromagnetic part, symmetrically to the permanent magnet, so as to form the second air gap surface of the first magnetic part.

Selon une deuxième configuration, l'aimant permanent est par exemple fixé sur une première portion annulaire de la première pièce ferromagnétique, formant la première surface d'entrefer de la première partie magnétique.According to a second configuration, the permanent magnet is for example fixed to a first annular portion of the first ferromagnetic part, forming the first air gap surface of the first magnetic part.

Selon une première architecture liée à la deuxième configuration, l'ensemble comporte :

  • un élément en matériau ferromagnétique fixé sur une deuxième portion annulaire de la première pièce ferromagnétique, symétriquement à l'aimant permanent, de manière à former la deuxième surface d'entrefer de la première partie magnétique,
  • deux éléments en matériau ferromagnétique fixés symétriquement sur deux portions annulaires de la deuxième pièce ferromagnétique, formant la première surface d'entrefer et la deuxième surface d'entrefer de la deuxième partie magnétique.
According to a first architecture linked to the second configuration, the assembly comprises:
  • an element made of ferromagnetic material fixed to a second annular portion of the first ferromagnetic part, symmetrically to the permanent magnet, so as to form the second air gap surface of the first magnetic part,
  • two elements of ferromagnetic material fixed symmetrically on two annular portions of the second ferromagnetic part, forming the first air gap surface and the second air gap surface of the second magnetic part.

Selon une deuxième architecture liée à la deuxième configuration, l'ensemble :

  • un aimant permanent fixé sur une deuxième portion annulaire de la première pièce ferromagnétique, formant la deuxième surface d'entrefer de la première partie magnétique,
  • deux éléments en matériau ferromagnétique fixés symétriquement sur deux portions annulaires de la deuxième pièce ferromagnétique, formant la première surface d'entrefer et la deuxième surface d'entrefer de la deuxième partie magnétique.
According to a second architecture linked to the second configuration, the assembly:
  • a permanent magnet fixed to a second annular portion of the first ferromagnetic part, forming the second air gap surface of the first magnetic part,
  • two elements of ferromagnetic material fixed symmetrically on two annular portions of the second ferromagnetic part, forming the first air gap surface and the second air gap surface of the second magnetic part.

Selon une troisième architecture liée à la deuxième configuration, l'ensemble comporte :

  • un aimant permanent fixé sur une deuxième portion annulaire de la première pièce ferromagnétique, formant la deuxième surface d'entrefer de la première partie magnétique,
  • deux aimants permanents fixés symétriquement sur deux portions annulaires de la deuxième pièce ferromagnétique, formant la première surface d'entrefer et la deuxième surface d'entrefer de la deuxième partie magnétique.
According to a third architecture linked to the second configuration, the assembly comprises:
  • a permanent magnet fixed to a second annular portion of the first ferromagnetic part, forming the second air gap surface of the first magnetic part,
  • two permanent magnets fixed symmetrically on two annular portions of the second ferromagnetic part, forming the first air gap surface and the second air gap surface of the second magnetic part.

Selon une autre particularité de l'invention, la fiche comporte un boîtier et la deuxième partie magnétique est agencée pour tourner librement à l'intérieur du boîtier.According to another feature of the invention, the plug comprises a housing and the second magnetic part is arranged to rotate freely inside the housing.

Selon une autre particularité de l'invention, la première partie magnétique et la deuxième partie magnétique sont agencées de manière à ce que le circuit magnétique génère un flux magnétique entourant les premiers contacts électriques et les deuxièmes contacts électriques.According to another feature of the invention, the first magnetic part and the second magnetic part are arranged so that the magnetic circuit generates a magnetic flux surrounding the first electrical contacts and the second electrical contacts.

Brève description des figuresBrief description of the figures

D'autres caractéristiques et avantages vont apparaître dans la description détaillée qui suit faite en regard des dessins annexés dans lesquels :

  • les figures 1A et 1B représentent une première architecture de l'ensemble de prise électrique de l'invention, comprenant un socle et une fiche respectivement désaccouplés et couplés,
  • les figures 2A et 2B représentent une deuxième architecture de l'ensemble de prise électrique de l'invention, comprenant un socle et une fiche respectivement désaccouplés et couplés,
  • les figures 3A et 3B représentent une troisième architecture de l'ensemble de prise électrique de l'invention, comprenant un socle et une fiche respectivement désaccouplés et couplés,
  • les figures 4A et 4B représentent une quatrième architecture de l'ensemble de prise électrique de l'invention, comprenant un socle et une fiche respectivement désaccouplés et couplés,
  • la figure 5 représente une variante de réalisation d'une partie magnétique employée.
Other characteristics and advantages will appear in the following detailed description given with reference to the appended drawings in which:
  • the figures 1A and 1B show a first architecture of the electrical outlet assembly of the invention, comprising a base and a plug respectively uncoupled and coupled,
  • the figures 2A and 2B show a second architecture of the electrical outlet assembly of the invention, comprising a base and a plug respectively uncoupled and coupled,
  • the figures 3A and 3B show a third architecture of the electrical outlet assembly of the invention, comprising a base and a plug respectively uncoupled and coupled,
  • the figures 4A and 4B show a fourth architecture of the electrical outlet assembly of the invention, comprising a base and a plug respectively uncoupled and coupled,
  • the figure 5 shows an alternative embodiment of a magnetic part used.

Sur les figures 1A à 4B, il faut comprendre que les parties magnétiques 13, 23 sont vues par un observateur placé entre le socle et la fiche.On the figures 1A to 4B , it should be understood that the magnetic parts 13, 23 are seen by an observer placed between the base and the plug.

Sur les figures annexées, la lettre N désigne le pôle Nord de l'aimant et la lettre S désigne le pôle Sud de l'aimant.In the appended figures, the letter N designates the North pole of the magnet and the letter S designates the South pole of the magnet.

Description détaillée d'au moins un mode de réalisationDetailed description of at least one embodiment

En référence aux figures annexées, l'ensemble de prise électrique de l'invention comporte un socle 1 et une fiche électrique 2 destinée à s'adapter sur le socle 1.With reference to the appended figures, the electrical outlet assembly of the invention comprises a base 1 and an electrical plug 2 intended to fit on the base 1.

Le socle 1 comporte un boîtier 10 plastique destiné par exemple à être encastré dans un mur. Le socle 1 présente une face avant 11 contre laquelle peut venir s'adapter la fiche électrique. Le socle comporte également un support mobile 12 sur lequel sont fixés deux premiers contacts électriques 120, 121. Les deux premiers contacts électriques 120, 121 sont reliés à une source de tension électrique par l'intermédiaire de fils électriques conducteurs (non représentés sur les figures). Le socle 1 comporte également une première partie magnétique 13 mobile solidaire en mouvement du support mobile 12 et agencée pour se déplacer par effet magnétique entre une première position et une deuxième position. Un ressort 14 positionné à l'intérieur du boîtier 10 du socle, par exemple fixé d'une part au boîtier 10 du socle et d'autre part au support mobile 12, est agencé pour ramener la première partie magnétique 13 dans sa première position lorsque l'effet magnétique nécessaire à l'extraction n'est plus assez important. Dans la première position de la première partie magnétique 13, les premiers contacts électriques 120, 121 sont rétractés à l'intérieur du socle 1 et dans la deuxième position de la première partie magnétique 13, les premiers contacts électriques 120, 121 sont à l'extérieur du socle 1, traversant sa face avant 11. Dans sa deuxième position, l'ensemble mobile formé par le support 12 et la partie magnétique 13 vient en butée, par exemple contre une partie du boîtier 10.The base 1 comprises a plastic housing 10 intended for example to be embedded in a wall. The base 1 has a front face 11 against which the electrical plug can fit. The base also comprises a movable support 12 on which are fixed two first electrical contacts 120, 121. The first two contacts electrical wires 120, 121 are connected to an electrical voltage source by means of conductive electrical wires (not shown in the figures). The base 1 also comprises a first movable magnetic part 13 integral in movement with the movable support 12 and arranged to move by magnetic effect between a first position and a second position. A spring 14 positioned inside the housing 10 of the base, for example fixed on the one hand to the housing 10 of the base and on the other hand to the movable support 12, is arranged to return the first magnetic part 13 to its first position when the magnetic effect required for extraction is no longer significant enough. In the first position of the first magnetic part 13, the first electrical contacts 120, 121 are retracted inside the base 1 and in the second position of the first magnetic part 13, the first electrical contacts 120, 121 are at the exterior of the base 1, passing through its front face 11. In its second position, the movable assembly formed by the support 12 and the magnetic part 13 comes into abutment, for example against a part of the housing 10.

La fiche électrique 2 comporte pour sa part un boîtier 20 plastique, présentant une face avant 21 destinée à venir en appui contre la face avant 11 du socle 1, définissant un plan de jonction P (défini verticalement sur les figures annexées) entre le socle 1 et la fiche 2. La fiche 2 comporte en outre deux deuxièmes contacts électriques 220, 221, par exemple deux pistes électriques affleurantes sur sa face avant 21, destinés à venir en contact électrique avec les deux premiers contacts électriques 120, 121 du socle 1. Elle comporte également une deuxième partie magnétique 23 destinée à attirer la première partie magnétique 13 lorsque la fiche 2 est approchée du socle 1 afin d'extraire les premiers contacts électriques 120, 121. Préférentiellement, les deux pistes électriques sont de forme circulaire et positionnées de manière concentrique.The electrical plug 2 for its part comprises a plastic casing 20, having a front face 21 intended to bear against the front face 11 of the base 1, defining a junction plane P (defined vertically in the appended figures) between the base 1 and the plug 2. The plug 2 further comprises two second electrical contacts 220, 221, for example two electrical tracks flush with its front face 21, intended to come into electrical contact with the two first electrical contacts 120, 121 of the base 1. It also comprises a second magnetic part 23 intended to attract the first magnetic part 13 when the plug 2 is approached from the base 1 in order to extract the first electrical contacts 120, 121. Preferably, the two electrical tracks are of circular shape and positioned so as to concentric way.

L'invention vise à créer un circuit magnétique permettant de fournir un effort magnétique suffisamment important à l'encontre de l'effort exercé par le ressort 14, pour extraire les contacts électriques 120, 121 du socle 1.The invention aims to create a magnetic circuit making it possible to provide a sufficiently large magnetic force against the force exerted by the spring 14, to extract the electrical contacts 120, 121 from the base 1.

Le circuit magnétique est généré entre les deux parties magnétiques 13, 23 lorsque la fiche 2 est approchée suffisamment proche du socle 1.The magnetic circuit is generated between the two magnetic parts 13, 23 when the plug 2 is approached sufficiently close to the base 1.

Les deux parties magnétiques 13, 23 sont formées et agencées de manière à ce que le circuit magnétique soit généré autour des premiers contacts électriques 120, 121 et des deuxièmes contacts électriques 220, 221 lorsque ceux-ci sont connectés.The two magnetic parts 13, 23 are formed and arranged so that the magnetic circuit is generated around the first electrical contacts 120, 121 and the second electrical contacts 220, 221 when these are connected.

La première partie magnétique 13 présente une première surface d'entrefer S1, une deuxième surface d'entrefer S10 et une première pièce ferromagnétique 130 fixée d'une part sur une surface opposée à sa première surface d'entrefer S1 et d'autre part sur une surface opposée à sa deuxième surface d'entrefer S10.The first magnetic part 13 has a first air gap surface S1, a second air gap surface S10 and a first ferromagnetic part 130 attached. on the one hand on a surface opposite to its first air gap surface S1 and on the other hand on a surface opposite to its second air gap surface S10.

La deuxième partie magnétique 23 comporte une première surface d'entrefer S2 destinée à être en vis-à-vis de la première surface d'entrefer S1 de la première partie magnétique 13 de manière à créer un premier entrefer et une deuxième surface d'entrefer S20 destinée à être en vis-à-vis de la deuxième surface d'entrefer S10 de la première partie magnétique 13 de manière à créer un deuxième entrefer lorsque la fiche 2 est approchée du socle 1. La deuxième partie magnétique 23 comporte également une deuxième pièce ferromagnétique 230 fixée d'une part sur une surface opposée à sa première surface d'entrefer S2 et d'autre part sur une surface opposée à sa deuxième surface d'entrefer S20.The second magnetic part 23 comprises a first air gap surface S2 intended to be opposite the first air gap surface S1 of the first magnetic part 13 so as to create a first air gap and a second air gap surface S20 intended to be opposite the second air gap surface S10 of the first magnetic part 13 so as to create a second air gap when the plug 2 is approached from the base 1. The second magnetic part 23 also comprises a second ferromagnetic part 230 fixed on the one hand on a surface opposite to its first air gap surface S2 and on the other hand on a surface opposite to its second air gap surface S20.

Dans chaque partie magnétique 13, 23, les deux pièces ferromagnétiques 130, 230 permettent de canaliser le flux magnétique entre les deux surfaces d'entrefer lorsque la fiche est approchée du socle.In each magnetic part 13, 23, the two ferromagnetic parts 130, 230 make it possible to channel the magnetic flux between the two air gap surfaces when the plug is approached to the base.

Le circuit magnétique est généré de sorte que, même lorsque la première partie magnétique 13 est encore dans sa première position, la première partie magnétique 13 et la deuxième partie magnétique 23 sont agencées de manière à favoriser le passage d'un flux magnétique ϕ à travers le premier entrefer et le deuxième entrefer plutôt qu'entre les deux surfaces d'entrefer S1, S10 (ou S2, S20) d'une même partie magnétique 13 (ou 23). Autrement dit, dans chaque partie magnétique 13, 23, les surfaces d'entrefer sont positionnées de manière à éviter tout rebouclage des lignes du champ magnétique entre ces deux surfaces.The magnetic circuit is generated so that, even when the first magnetic part 13 is still in its first position, the first magnetic part 13 and the second magnetic part 23 are arranged so as to promote the passage of a magnetic flux ϕ through the first air gap and the second air gap rather than between the two air gap surfaces S1, S10 (or S2, S20) of the same magnetic part 13 (or 23). In other words, in each magnetic part 13, 23, the air gap surfaces are positioned so as to avoid any looping of the lines of the magnetic field between these two surfaces.

De manière plus précise :

  • La première pièce ferromagnétique 130 est préférentiellement de forme annulaire et agencée à l'intérieur du socle 1 de sorte que son axe de révolution soit perpendiculaire à sa face avant 11.
  • La deuxième pièce ferromagnétique 230 est préférentiellement de forme annulaire et positionnée à l'intérieur de la fiche 2 de sorte que son axe de révolution soit perpendiculaire à sa face avant 21.
More precisely:
  • The first ferromagnetic part 130 is preferably annular in shape and arranged inside the base 1 so that its axis of revolution is perpendicular to its front face 11.
  • The second ferromagnetic part 230 is preferably annular in shape and positioned inside the plug 2 so that its axis of revolution is perpendicular to its front face 21.

Les deux pièces ferromagnétiques 130, 230 annulaires sont positionnées de manière coaxiale afin de permettre une rotation de la fiche 2 par rapport au socle 1, rendant indépendant le positionnement angulaire de la fiche 2 par rapport au socle 1. Cet avantage n'est permis que si les pistes électriques de la fiche 2 sont circulaires et positionnées de manière concentrique.The two annular ferromagnetic parts 130, 230 are positioned coaxially in order to allow rotation of the plug 2 with respect to the base 1, making the angular positioning of the plug 2 with respect to the base 1 independent. This advantage is only allowed if the electrical tracks of the plug 2 are circular and positioned concentrically.

Avantageusement, la deuxième partie magnétique 23 est agencée à l'intérieur du boîtier 20 de la fiche de manière à pouvoir tourner librement à l'intérieur du boîtier 20 pour s'orienter par rapport à la première partie magnétique 13.Advantageously, the second magnetic part 23 is arranged inside the housing 20 of the plug so as to be able to rotate freely inside the housing 20 in order to orient itself with respect to the first magnetic part 13.

Selon les architectures, les deux pièces ferromagnétiques 130, 230 peuvent être de tailles identiques ou non.Depending on the architectures, the two ferromagnetic parts 130, 230 may or may not be of identical sizes.

Avantageusement, les deux pièces ferromagnétiques de forme annulaire sont d'épaisseur constante sur toute leur circonférence.Advantageously, the two ferromagnetic parts of annular shape are of constant thickness over their entire circumference.

Chaque pièce ferromagnétique 130, 230 de forme annulaire comporte une première portion annulaire s'étalant sur une première plage angulaire et une deuxième portion annulaire s'étalant sur une deuxième plage angulaire. Les deux portions annulaires sont distinctes et par exemple positionnées symétriquement par rapport à un plan de symétrie transversal de la pièce ferromagnétique. Préférentiellement, chaque portion annulaire occupe une plage angulaire inférieure à 180° et par exemple environ égale à 120°.Each ferromagnetic part 130, 230 of annular shape comprises a first annular portion extending over a first angular range and a second annular portion extending over a second angular range. The two annular portions are distinct and for example positioned symmetrically with respect to a transverse plane of symmetry of the ferromagnetic part. Preferably, each annular portion occupies an angular range less than 180 ° and for example approximately equal to 120 °.

Selon les architectures, chaque portion annulaire est recouverte d'un aimant permanent 15, 16, 25, 26 et/ou d'un élément en matériau ferromagnétique 150, 160, 260 en surépaisseur par rapport à l'épaisseur de l'anneau formé par la pièce ferromagnétique. L'aimant permanent ou l'élément en matériau ferromagnétique est destiné à former chacun une surface d'entrefer de la partie magnétique 13, 23, telle que définie ci-dessus.According to the architectures, each annular portion is covered with a permanent magnet 15, 16, 25, 26 and / or an element made of ferromagnetic material 150, 160, 260 in excess thickness compared to the thickness of the ring formed by the ferromagnetic part. The permanent magnet or the element made of ferromagnetic material is each intended to form an air gap surface of the magnetic part 13, 23, as defined above.

Dans toutes les architectures, l'ensemble comporte au moins un aimant permanent fixé sur une portion annulaire de la première pièce ferromagnétique 130 ou de la deuxième pièce ferromagnétique 230 de manière à générer le circuit magnétique.In all the architectures, the assembly comprises at least one permanent magnet fixed to an annular portion of the first ferromagnetic part 130 or of the second ferromagnetic part 230 so as to generate the magnetic circuit.

Chaque aimant permanent est réalisé sous la forme d'une portion d'anneau destinée à recouvrir une portion annulaire de la pièce ferromagnétique sur laquelle il est fixé. Il est agencé de manière à présenter une première face polaire contre la pièce ferromagnétique et une deuxième face polaire orientée vers la face avant 11, 21 de la fiche ou du socle. L'orientation des faces polaires de l'aimant permanent détermine le sens du flux magnétique ϕ généré dans le circuit magnétique.Each permanent magnet is produced in the form of a ring portion intended to cover an annular portion of the ferromagnetic part to which it is fixed. It is arranged so as to have a first pole face against the ferromagnetic part and a second pole face oriented towards the front face 11, 21 of the plug or the base. The orientation of the pole faces of the permanent magnet determines the direction of the magnetic flux ϕ generated in the magnetic circuit.

En référence aux figures annexées, plusieurs architectures sont ensuite possibles pour créer le circuit magnétique défini ci-dessus. Dans toutes ces architectures, il faut comprendre que chaque aimant permanent employé peut être fixé sur la première pièce ferromagnétique 130 ou sur la deuxième pièce ferromagnétique 230.With reference to the appended figures, several architectures are then possible to create the magnetic circuit defined above. In all these architectures, it should be understood that each permanent magnet employed can be fixed on the first ferromagnetic part 130 or on the second ferromagnetic part 230.

Première architecture - Figures 1A et 1B First architecture - Figures 1A and 1B

Dans une première architecture, le circuit magnétique ne comporte qu'un seul aimant permanent 25. Sur les figures 1A et 1B, l'aimant permanent 25 est fixé sur la première portion annulaire de la deuxième pièce ferromagnétique 230. Sa deuxième face polaire correspond à la première surface d'entrefer S2 de la deuxième partie magnétique 23. La deuxième surface d'entrefer S20 de la deuxième partie magnétique 23 est formée par un élément en matériau ferromagnétique 260 fixé sur la deuxième pièce ferromagnétique 230 sur la deuxième portion annulaire de la deuxième pièce ferromagnétique 230.In a first architecture, the magnetic circuit has only one permanent magnet 25. On the figures 1A and 1B , the permanent magnet 25 is fixed to the first annular portion of the second ferromagnetic part 230. Its second pole face corresponds to the first air gap surface S2 of the second magnetic part 23. The second air gap surface S20 of the second magnetic part 23 is formed by an element of ferromagnetic material 260 fixed on the second ferromagnetic part 230 on the second annular portion of the second ferromagnetic part 230.

Dans cette première architecture, la première surface d'entrefer S1 et la deuxième surface d'entrefer S10 de la première partie magnétique 13 sont formées toutes deux par des éléments en matériau ferromagnétique 150, 160 fixés chacun sur les deux portions annulaires distinctes de la première pièce ferromagnétique 130.In this first architecture, the first air gap surface S1 and the second air gap surface S10 of the first magnetic part 13 are both formed by elements made of ferromagnetic material 150, 160 each fixed on the two distinct annular portions of the first ferromagnetic part 130.

L'aimant permanent 25 et chaque élément magnétique sont positionnés de manière à générer les entrefers définis ci-dessus lorsque la fiche est approchée du socle.The permanent magnet 25 and each magnetic element are positioned so as to generate the air gaps defined above when the plug is approached to the base.

Le flux magnétique ϕ généré par l'aimant permanent 25 traverse l'aimant permanent entre ces deux faces polaires puis circule à travers le premier entrefer jusqu'à l'élément 150, puis parallèlement et dans le même sens à travers les deux portions latérales de la première pièce ferromagnétique 130 pour rejoindre l'élément 160, la deuxième surface d'entrefer S10 de la première partie magnétique, puis traverse le deuxième entrefer pour rejoindre l'élément 260, avant de rejoindre la première face polaire de l'aimant permanent 25 en passant parallèlement et dans le même sens par les deux portions latérales de la deuxième pièce ferromagnétique 230.The magnetic flux ϕ generated by the permanent magnet 25 passes through the permanent magnet between these two pole faces then circulates through the first air gap to the element 150, then parallel and in the same direction through the two lateral portions of the first ferromagnetic part 130 to join the element 160, the second air gap surface S10 of the first magnetic part, then crosses the second air gap to join the element 260, before joining the first pole face of the permanent magnet 25 passing parallel and in the same direction through the two side portions of the second ferromagnetic part 230.

Dans cette première architecture, les deux pièces ferromagnétiques 130, 230 annulaires ne sont pas forcément identiques.In this first architecture, the two ferromagnetic parts 130, 230 annular are not necessarily identical.

Deuxième architecture - Figures 2A et 2B Second architecture - Figures 2A and 2B

Dans cette architecture, par rapport à la première architecture, un deuxième aimant permanent 26 est fixé sur la deuxième pièce ferromagnétique 230, en remplacement de son élément magnétique 260. Le deuxième aimant permanent 26 est fixé de manière à ce que ses faces polaires soient orientées à l'inverse de celles du premier aimant permanent 25 de manière à favoriser le flux magnétique ϕ dans le circuit magnétique.In this architecture, compared to the first architecture, a second permanent magnet 26 is fixed on the second ferromagnetic part 230, replacing its magnetic element 260. The second permanent magnet 26 is fixed so that its pole faces are oriented. unlike those of the first permanent magnet 25 so as to promote the magnetic flux ϕ in the magnetic circuit.

Par rapport à la première architecture, grâce à ses deux aimants permanents 25, 26 positionnés symétriquement par rapport aux axes de révolution des deux pièces annulaires, cette deuxième architecture présente l'avantage d'équilibrer l'effort magnétique exercé lorsque la fiche est approchée du socle.Compared to the first architecture, thanks to its two permanent magnets 25, 26 positioned symmetrically with respect to the axes of revolution of the two annular parts, this second architecture has the advantage of balancing the magnetic force exerted when the plug is approached to the basement.

Dans cette architecture, le flux magnétique généré suit le même trajet que dans la première architecture.In this architecture, the magnetic flux generated follows the same path as in the first architecture.

Troisième architecture - Figures 3A et 3B Third architecture - Figures 3A and 3B

Dans cette troisième architecture, la deuxième partie magnétique 23 est identique à celle de la première architecture décrite ci-dessus. La première partie magnétique 13 présente dans le socle 1 comporte pour sa part un aimant permanent 15 fixé sur l'une de ses portions annulaires définies ci-dessus de manière à former la première surface d'entrefer S1 située en vis-à-vis de celle réalisée par l'aimant permanent 25 de la deuxième partie magnétique 23. Dans la première partie magnétique 13, la deuxième surface d'entrefer S10 est réalisée grâce à un élément 160 en matériau magnétique.In this third architecture, the second magnetic part 23 is identical to that of the first architecture described above. The first magnetic part 13 present in the base 1 comprises for its part a permanent magnet 15 fixed on one of its annular portions defined above so as to form the first air gap surface S1 located opposite that produced by the permanent magnet 25 of the second magnetic part 23. In the first magnetic part 13, the second air gap surface S10 is produced by means of an element 160 made of magnetic material.

Dans cette architecture, les deux pièces ferromagnétiques 130, 230 de forme annulaire sont de taille identique.In this architecture, the two ferromagnetic parts 130, 230 of annular shape are of identical size.

Cette architecture présente l'avantage de permettre un centrage automatique de la fiche 2 sur le socle 1, grâce aux deux aimants permanents 15, 25 répartis dans le socle 1 et la fiche 2.This architecture has the advantage of allowing automatic centering of the plug 2 on the base 1, thanks to the two permanent magnets 15, 25 distributed in the base 1 and the plug 2.

Dans cette architecture, le flux magnétique généré suit le même trajet que dans la première architecture.In this architecture, the magnetic flux generated follows the same path as in the first architecture.

Quatrième architecture - Figures 4A et 4B Fourth architecture - Figures 4A and 4B

Dans cette architecture, les deux portions annulaires de la première pièce ferromagnétique 13 sont chacune occupées par un aimant permanent 15, 16 et les deux portions annulaires de la deuxième pièce ferromagnétique sont chacune également occupées par un aimant permanent 25, 26, formant ainsi deux à deux les deux entrefers du circuit magnétique lorsque la fiche 2 est approchée du socle 1.In this architecture, the two annular portions of the first ferromagnetic part 13 are each occupied by a permanent magnet 15, 16 and the two annular portions of the second ferromagnetic part are each also occupied by a permanent magnet 25, 26, thus forming two to two the two air gaps of the magnetic circuit when the plug 2 is approached to the base 1.

Cette configuration présente l'avantage d'un auto-centrage performant et d'un effort magnétique équilibré, les quatre aimants 15, 16, 25, 26 étant répartis de manière symétrique lorsque la fiche est approchée du socle.This configuration has the advantage of efficient self-centering and a balanced magnetic force, the four magnets 15, 16, 25, 26 being distributed symmetrically when the plug is approached to the base.

Dans cette architecture, les deux pièces ferromagnétiques 130, 230 de forme annulaire sont de tailles identiques.In this architecture, the two ferromagnetic parts 130, 230 of annular shape are of identical sizes.

Dans cette architecture, le flux magnétique généré suit le même trajet que dans la première architecture.In this architecture, the magnetic flux generated follows the same path as in the first architecture.

En variante de réalisation, comme représenté sur la figure 5, il est possible d'augmenter la taille de chaque aimant permanent et d'étendre la portion annulaire recouverte de manière à mieux centrer la force magnétique exercée.As an alternative embodiment, as shown in figure 5 , it is possible to increase the size of each permanent magnet and to extend the covered annular portion so as to better center the magnetic force exerted.

Les différentes architectures décrites présentent ainsi de nombreux avantages, parmi lesquels :

  • la génération d'un effort magnétique dédié entièrement à l'extraction des contacts électriques, les lignes de champ magnétique étant absorbées dans le circuit magnétique généré et non dispersées dans l'air,
  • lorsque le socle et la fiche comportent tous deux un aimant permanent, la possibilité d'obtenir un auto-centrage automatique de la prise sur le socle,
  • lorsqu'une partie magnétique comporte deux aimants permanents positionnés de manière symétrique, l'effort magnétique exercé est équilibré,
  • la génération d'un circuit magnétique autour de la connectique électrique, permettant d'assurer un meilleur accrochage mécanique et ainsi une meilleure connexion électrique.
The various architectures described thus have many advantages, among which:
  • the generation of a magnetic force dedicated entirely to the extraction of the electrical contacts, the magnetic field lines being absorbed in the generated magnetic circuit and not dispersed in the air,
  • when the base and the plug both have a permanent magnet, the possibility of obtaining an automatic self-centering of the socket on the base,
  • when a magnetic part has two permanent magnets positioned symmetrically, the magnetic force exerted is balanced,
  • the generation of a magnetic circuit around the electrical connections, making it possible to ensure better mechanical attachment and thus better electrical connection.

Claims (13)

  1. Electrical socket and plug assembly comprising:
    - a socket (1) comprising at least one first electrical contact (120, 121), one first magnetic part (13) secured in movement to the first electrical contact, said first magnetic part (13) being arranged to be moved by magnetic effect between a first position in which the first electrical contact (120, 121) is retracted inside the socket (1) and a second position in which the first electrical contact (120, 121) is outside the socket (1),
    - a plug (2) intended to mate with the socket and comprising at least one second electrical contact (220, 221) intended to be connected electrically to the first electrical contact (120, 121) when the latter is outside the socket (1) and one second magnetic part (23) arranged facing the first magnetic part (13) when the plug is mated with the socket to move, by magnetic effect, the first magnetic part (13) to its second position, driving the first electrical contact (120, 121) out of the socket,
    - the first magnetic part (13) or the second magnetic piece (23) comprises at least one permanent magnet (15, 16, 25, 26) so as to form a magnetic circuit when the plug (2) is offered up to the socket (1),
    characterized in that:
    - the first magnetic part (13) comprises a first air-gap surface (S1) and a second air-gap surface (S10) and a first ferromagnetic piece (130) fixed on one side to a surface opposite its first air-gap surface and on the other side to a surface opposite its second air-gap surface,
    - the second magnetic part (23) comprises a first air-gap surface (S2) intended to be facing the first air-gap surface (S1) of the first magnetic part (13) so as to form a first air gap, a second air-gap surface (S20) intended to be facing the second air-gap surface (S10) of the first magnetic part (13) so as to form a second air gap when the plug (2) is offered up to the socket (1) and a second ferromagnetic piece (230) fixed on one side to a surface opposite its first air-gap surface and on the other side to a surface opposite its second air-gap surface,
    - the first ferromagnetic piece (130) having a loop-form architecture with two lateral portions and arranged parallel to the junction plane, the second ferromagnetic piece (230) having an architecture identical to that of the first ferromagnetic piece,
    - the permanent magnet has a first polar face against the ferromagnetic piece and a second polar face oriented towards the front face of the plug or of the socket,
    - said magnetic circuit being formed between the first magnetic part and the second magnetic part to generate a magnetic flux passing through the first air gap and through the second air gap,
    - said magnetic flux (ϕ) generated by the permanent magnet (25) passes through the permanent magnet between these two polar faces then circulates through the first air gap, then parallel and in the same direction through the two lateral portions of the first ferromagnetic piece (130), then passes through the second air gap, before rejoining the first polar face of the permanent magnet (25) in passing parallel and in the same direction through the two lateral portions of the second ferromagnetic piece (230).
  2. Assembly according to Claim 1, characterized in that the first ferromagnetic piece (130) is of annular form and arranged parallel to the junction plane and in that the second ferromagnetic piece (230) is of annular form arranged parallel to the junction plane.
  3. Assembly according to Claim 2, characterized in that the permanent magnetic (25) is fixed onto a first annular portion of the second ferromagnetic piece (230), forming the first air-gap surface (S2) of the second ferromagnetic part (23).
  4. Assembly according to Claim 3, characterized in that it comprises:
    - an element made of ferromagnetic material fixed onto a second annular portion, symmetrically to the permanent magnet (25), so as to form the second air-gap surface of the second magnetic part (23),
    - two elements made of ferromagnetic material fixed symmetrically onto two annular portions of the first ferromagnetic piece, forming the first air-gap surface and the second air-gap surface of the first magnetic part (13).
  5. Assembly according to Claim 3, characterized in that it comprises:
    - a permanent magnet (26) fixed onto a second annular portion of the second ferromagnetic piece (230), forming the second air-gap surface (S20) of the second magnetic part (23),
    - two elements made of ferromagnetic material fixed symmetrically onto two annular portions of the first ferromagnetic piece, forming the first air-gap surface and the second air-gap surface of the first magnetic part (13).
  6. Assembly according to Claim 3, characterized in that it comprises:
    - a permanent magnet (26) fixed onto a second annular portion of the second ferromagnetic piece (230), forming the second air-gap surface (S20) of the second magnetic part (23),
    - two permanent magnets (15, 16) fixed symmetrically onto two annular portions of the first ferromagnetic piece (130), forming the first air-gap surface (S1) and the second air-gap surface (S10) of the first magnetic part (13).
  7. Assembly according to Claim 3, characterized in that it comprises:
    - an element made of ferromagnetic material fixed onto a second annular portion, symmetrically to the permanent magnet (25), so as to form the second air-gap surface of the second magnetic part (23),
    - a permanent magnet (15) fixed onto a first annular portion of the first ferromagnetic piece forming the first air-gap surface (S1) of the first magnetic part (13),
    - an element made of ferromagnetic material fixed onto a second annular portion of the first ferromagnetic piece (130), symmetrically to the permanent magnet (15), so as to form the second air-gap surface (S10) of the first magnetic part (13).
  8. Assembly according to Claim 2, characterized in that the permanent magnet (15) is fixed onto a first annular portion of the first ferromagnetic piece (130), forming the first air-gap surface (S1) of the first magnetic part (13).
  9. Assembly according to Claim 8, characterized in that it comprises:
    - an element made of ferromagnetic material fixed onto a second annular portion of the first ferromagnetic piece (130), symmetrically to the permanent magnet (15), so as to form the second air-gap surface (S10) of the first magnetic part (13),
    - two elements made of ferromagnetic material fixed symmetrically onto two annular portions of the second ferromagnetic piece (230), forming the first air-gap surface (S2) and the second air-gap surface (S20) of the second magnetic part (23).
  10. Assembly according to Claim 8, characterized in that it comprises:
    - a permanent magnet (16) fixed onto a second annular portion of the first ferromagnetic piece (130), forming the second air-gap surface (S10) of the first magnetic part (13),
    - two elements made of ferromagnetic material fixed symmetrically onto two annular portions of the second ferromagnetic piece (230), forming the first air-gap surface (S2) and the second air-gap surface (S20) of the second magnetic part (23).
  11. Assembly according to Claim 8, characterized in that it comprises:
    - a permanent magnet (16) fixed onto a second annular portion of the first ferromagnetic piece (130), forming the second air-gap surface (S10) of the first magnetic part (13),
    - two permanent magnets (25, 26) fixed symmetrically onto two annular portions of the second ferromagnetic piece (230), forming the first air-gap surface (S2) and the second air-gap surface (S20) of the second magnetic part (23).
  12. Assembly according to one of Claims 1 to 11, characterized in that the plug (2) comprises a housing (20) and in that the second magnetic part (23) is arranged to turn freely inside the housing.
  13. Assembly according to one of Claims 1 to 12, characterized in that the first magnetic part (13) and the second magnetic part (23) are arranged so that the magnetic circuit generates a magnetic flux surrounding the first electrical contacts and the second electrical contacts.
EP16748325.4A 2015-07-01 2016-06-28 Electrical plug and socket assembly Active EP3317926B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1556200A FR3038460B1 (en) 2015-07-01 2015-07-01 ELECTRICAL SOCKET ASSEMBLY
PCT/FR2016/051585 WO2017001755A1 (en) 2015-07-01 2016-06-28 Electrical plug and socket assembly

Publications (2)

Publication Number Publication Date
EP3317926A1 EP3317926A1 (en) 2018-05-09
EP3317926B1 true EP3317926B1 (en) 2021-03-31

Family

ID=53879701

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16748325.4A Active EP3317926B1 (en) 2015-07-01 2016-06-28 Electrical plug and socket assembly

Country Status (10)

Country Link
US (1) US10348024B2 (en)
EP (1) EP3317926B1 (en)
JP (1) JP6783256B2 (en)
KR (1) KR102584737B1 (en)
CN (1) CN108028497B (en)
BR (1) BR112017028480B1 (en)
ES (1) ES2876037T3 (en)
FR (1) FR3038460B1 (en)
HK (1) HK1250422A1 (en)
WO (1) WO2017001755A1 (en)

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Also Published As

Publication number Publication date
US20180191097A1 (en) 2018-07-05
CN108028497A (en) 2018-05-11
FR3038460A1 (en) 2017-01-06
BR112017028480A2 (en) 2018-08-28
BR112017028480B1 (en) 2022-10-18
CN108028497B (en) 2020-06-02
HK1250422A1 (en) 2018-12-14
JP2018519644A (en) 2018-07-19
KR20180022938A (en) 2018-03-06
WO2017001755A1 (en) 2017-01-05
ES2876037T3 (en) 2021-11-11
US10348024B2 (en) 2019-07-09
KR102584737B1 (en) 2023-10-05
EP3317926A1 (en) 2018-05-09
JP6783256B2 (en) 2020-11-11
FR3038460B1 (en) 2019-09-13

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