EP3320585B1 - Electrical power-point assembly with electrical disconnection solution - Google Patents

Electrical power-point assembly with electrical disconnection solution Download PDF

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Publication number
EP3320585B1
EP3320585B1 EP16742372.2A EP16742372A EP3320585B1 EP 3320585 B1 EP3320585 B1 EP 3320585B1 EP 16742372 A EP16742372 A EP 16742372A EP 3320585 B1 EP3320585 B1 EP 3320585B1
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EP
European Patent Office
Prior art keywords
magnetic
socket
assembly according
base
electrical contacts
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.)
Active
Application number
EP16742372.2A
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German (de)
French (fr)
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EP3320585A1 (en
Inventor
Ronan TROUFFLARD
Amandine BRAY
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Gulplug SAS
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Gulplug SAS
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Publication of EP3320585A1 publication Critical patent/EP3320585A1/en
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Classifications

    • 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
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H01R13/703—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part
    • H01R13/7036—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part the switch being in series with coupling part, e.g. dead coupling, explosion proof coupling
    • H01R13/7037—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part the switch being in series with coupling part, e.g. dead coupling, explosion proof coupling making use of a magnetically operated switch
    • 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
    • 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
    • H01R13/46—Bases; Cases
    • H01R13/53—Bases or cases for heavy duty; Bases or cases for high voltage with means for preventing corona or arcing
    • 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
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/6485—Electrostatic discharge protection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts

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 mobile magnetic element housed in the base and integral with the electrical contacts, allow the electrical contacts to be extracted from the base and their connection to electric tracks.
  • a mechanical spring system reposition the movable mechanism inside the base.
  • the current flowing between the plug and the base creates an electric arc that can last up to 10ms.
  • these electric arcs tend to wear out and degrade materially and visually the areas of electrical connection between the plug and the base.
  • the patent US4156265 proposes a solution in which the electrical circuit is disconnected when a bulb is unscrewed from its base.
  • the solution consists in using a reed type microswitch, the control of which is carried out by the mechanical displacement of the bulb relative to the base.
  • this solution is not suitable for an electrical outlet assembly such as that described above where the withdrawal of the plug does not always follow an identical movement, this movement being able to be axial or carried out by pivoting relative to the base.
  • the document JP2007-73373 describes a connection solution employing an electromagnet which becomes energized when the plug and the socket are joined. In the event of a power cut, the electromagnet is no longer supplied and the plug is automatically disconnected from the base given that the electromagnet is no longer supplied. When the current is restored, the device is then no longer supplied, which avoids the risk of a short circuit.
  • FR 3 012 263 A1 discloses the features of the preamble of claim 1.
  • the aim of the invention is to provide a suitable solution on an electrical outlet assembly comprising a base and a plug to limit, or even avoid, any degradation of the electrical connection areas when the plug is separated from the base and this, regardless of the angle of withdrawal of the plug from the socket.
  • the solution of the invention is particularly suitable for a set of magnetically coupled electrical outlets in which the electrical contacts are extracted from the base by magnetic effect.
  • the processing unit comprises first means for monitoring the level of variation of magnetic flux with respect to a first threshold value.
  • the processing unit comprises second means for monitoring the level of flow with respect to a second threshold value.
  • the processing unit comprises a processing logic circuit arranged to applying a logic OR between a detection signal generated by the first monitoring means and a detection signal generated by the second monitoring means.
  • the disconnection means comprise an electromechanical relay connected to the supply circuit.
  • the base comprises a housing and the assembly comprises an electronic card housed in said housing, said electronic card comprising the processing unit and the measurement sensor.
  • the first magnetic part and / or the second magnetic part comprises at least one permanent magnet.
  • the measurement sensor is positioned in the circuit followed by the lines of a magnetic field generated by said permanent magnet.
  • the assembly comprises a ferromagnetic part arranged relative to the permanent magnet to channel its magnetic flux with a view to orienting it towards the measurement sensor.
  • Said ferromagnetic part is for example placed in direct contact with the permanent magnet.
  • the permanent magnet and the ferromagnetic part are for example housed in the housing of the base and the measurement sensor is fixed on this housing.
  • 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 two first electrical contacts 120, 121 are connected to an electrical supply circuit 15 by means of electrical wires. conductors.
  • 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 accompanying 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 fixed inside the case and 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 tracks electrics are circular in shape and positioned concentrically.
  • the first magnetic part and / or the second magnetic part comprises at least one permanent magnet so as to generate a magnetic flux between the two magnetic parts.
  • the first magnetic part 13 comprises for example a permanent magnet 130 of annular shape and the second magnetic part 23 comprises a permanent magnet 230 of annular shape.
  • the permanent magnet 130 and the ferromagnetic part 230 are intended to position themselves coaxially when the plug 2 is approached the base 1.
  • the permanent magnet 130 and the permanent magnet 203 are arranged so as to each have an air gap surface parallel to the junction plane.
  • the invention aims to prevent any occurrence of an electric arc in the electrical connection zones when the plug is separated from the base. It is necessary to detect this separation quickly.
  • the detection means comprise a sensor 3 for measuring the magnetic flux present between the plug and the base, the magnetic flux being maximum when the plug 2 is fitted on the base 1 and decreasing as the plug 2 is remote from the base 1.
  • the magnetic flux sensor 3 is judiciously positioned to best capture the magnetic flux ⁇ and its variation.
  • the measurement sensor 3 is positioned on the circuit traversed by the magnetic field lines L existing between the two magnetic parts 13, 23.
  • the measurement sensor 3 is fixed to the base 1.
  • the measurement sensor 3 is for example fixed to the outside of the housing 10 of the base.
  • the detection means may comprise a part 4 made of ferromagnetic material arranged to channel the magnetic flux coming from the permanent magnet positioned in the base to the measurement sensor 3.
  • the figure 2 schematically represents the principle of the channeling of the magnetic flux ⁇ using a ferromagnetic part 4 and the positioning of the sensor 3 to capture this magnetic flux.
  • This ferromagnetic part 4 makes it possible to channel the flux at the outlet of the magnet and therefore to provide the sensor 3 with a more constant flux of a sufficiently high intensity to be captured.
  • This part 4 has a high relative permeability, which channels the flow well.
  • the large difference in permeability between this ferromagnetic part and the air has the consequence of obtaining flow lines very perpendicular to the output face of the flux on the ferromagnetic part 4.
  • the ferromagnetic part 4 is housed in the base 1. It has for example an annular shape. It is for example fixed against the face of the permanent magnet 130 which is opposite to its air gap surface.
  • the detection means comprise a processing unit 5 comprising at least one input intended to receive analog measurement data coming from the magnetic flux measurement sensor 3 and at least one output to which the processing unit 5 is capable of generate a disconnection control signal SIG.
  • the processing unit 5 notably comprises means for monitoring the variation in the measured magnetic flux. When the variation in flow becomes less than a threshold value S1, the processing unit 5 is arranged to generate the disconnection control signal SIG intended for the disconnection means 8.
  • the monitoring means comprise means 50 for determining the flux variation by calculation of the derivative of the magnetic flux curve and a comparator 51 receiving as input the calculated derivative and a threshold value S1 to determine said disconnection control signal SIG.
  • the monitoring means are for example produced in the form of an electronic circuit with discrete components.
  • the monitoring means could include a microcontroller processing the measurement data digitally.
  • the detection means also comprise a processing unit 5 comprising at least one input intended to receive analog measurement data coming from the magnetic flux measurement sensor 3 and at least one output to which the processing unit 5 is capable to generate a disconnection control signal SIG.
  • This processing unit 5 is provided with first means for monitoring the variation of magnetic flux such as those described above in connection with the first variant embodiment and with second means for monitoring the level of magnetic flux.
  • These second monitoring means comprise for example a comparator 61 receiving as input the measurement data of the flow coming from the measurement sensor 3 and a threshold value S2 necessary for the comparison. When the level of flow drops below the threshold value S2, the monitoring means generate a detection signal SIG_D2.
  • the processing unit 5 comprises a logic processing circuit 7 arranged to receive a first detection signal SIG_D1 originating from the first monitoring means and / or a second detection signal SIG_D2 originating from the second monitoring means. surveillance.
  • the logic processing circuit 7 implements a logic OR to generate the disconnection control signal SIG intended for disconnection means when receiving the first detection signal SIG_D1 and / or the second detection signal SIG_D2.
  • the disconnection means 8 are controlled on receipt of the disconnection control signal SIG coming from the processing unit 5. They comprise for example an electromechanical relay connected in series on the electrical supply circuit connected to the devices. electrical contacts of the base. Advantageously, they can also include a freewheeling diode connected in parallel with the winding of the electromechanical relay and possibly a resistor connected in series with the freewheeling diode to improve the reaction time of the electromechanical relay.
  • the disconnection means, in particular the electromechanical relay are for example produced on an electronic card housed in the housing (10) of the base. This electronic card can be identical to that accommodating the detection means described above.
  • the electric power supply circuit 15 comprises for example two terminals connected to the electromechanical relay.
  • the curves shown on the figure 4 illustrate the detection of separation both by the level of variation of the magnetic flux and by the variation of the level of magnetic flux. It will be understood that the disconnection control signal SIG goes high when the level of flow drops below the threshold value S2 and / or when the variation of flow falls below the threshold value S1.

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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 employée. 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 solidaires des contacts électriques, permettent l'extraction des contacts électriques du socle et leur connexion avec les pistes électriques. Lorsque la fiche est désaccouplée du socle, un système mécanique à ressort repositionne le mécanisme mobile à l'intérieur du socle. Lors de cette phase de séparation, le courant qui circulait entre la fiche et le socle crée un arc électrique pouvant durer jusqu'à 10ms. Or ces arcs électriques ont tendance à user et dégrader matériellement et visuellement les zones de connexion électrique entre la fiche et le socle.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 mobile magnetic element housed in the base and integral with the electrical contacts, allow the electrical contacts to be extracted from the base and their connection to electric tracks. When the plug is disconnected from the base, a mechanical spring system reposition the movable mechanism inside the base. During this phase of separation, the current flowing between the plug and the base creates an electric arc that can last up to 10ms. However, these electric arcs tend to wear out and degrade materially and visually the areas of electrical connection between the plug and the base.

Le brevet US4156265 propose une solution dans laquelle le circuit électrique est déconnecté lorsqu'une ampoule est dévissée de son socle. La solution consiste à employer un micro-interrupteur de type reed dont la commande est réalisée par le déplacement mécanique de l'ampoule par rapport au socle. Cette solution n'est cependant pas adaptée à un ensemble de prise électrique tel que celui décrit ci-dessus où le retrait de la fiche ne suit pas toujours un mouvement identique, celui-ci pouvant être axial ou réalisé par pivotement par rapport au socle.The patent US4156265 proposes a solution in which the electrical circuit is disconnected when a bulb is unscrewed from its base. The solution consists in using a reed type microswitch, the control of which is carried out by the mechanical displacement of the bulb relative to the base. However, this solution is not suitable for an electrical outlet assembly such as that described above where the withdrawal of the plug does not always follow an identical movement, this movement being able to be axial or carried out by pivoting relative to the base.

Le document JP2007-73373 décrit une solution de connexion employant un électroaimant qui devient alimenté lorsque la fiche et le socle sont réunis. En cas de coupure de courant, l'électroaimant n'est plus alimenté et la fiche se désolidarise automatiquement du socle étant donné que l'électroaimant n'est plus alimenté. Lorsque le courant est rétabli, l'appareil n'est alors plus alimenté ce qui évite les risques de court-circuit.The document JP2007-73373 describes a connection solution employing an electromagnet which becomes energized when the plug and the socket are joined. In the event of a power cut, the electromagnet is no longer supplied and the plug is automatically disconnected from the base given that the electromagnet is no longer supplied. When the current is restored, the device is then no longer supplied, which avoids the risk of a short circuit.

FR 3 012 263 A1 divulgue les caractéristiques du préambule de la revendication 1. FR 3 012 263 A1 discloses the features of the preamble of claim 1.

Le but de l'invention est de proposer une solution adaptée sur un ensemble de prise électrique comprenant un socle et une fiche pour limiter, voir éviter, toute dégradation des zones de connexion électrique lorsque la fiche est séparée du socle et ceci, quelle que soit l'angle de retrait de la fiche par rapport au socle. La solution de l'invention est particulièrement adaptée pour un ensemble de prises électriques à couplage magnétique dans lequel les contacts électriques sont extraits du socle par effet magnétique.The aim of the invention is to provide a suitable solution on an electrical outlet assembly comprising a base and a plug to limit, or even avoid, any degradation of the electrical connection areas when the plug is separated from the base and this, regardless of the angle of withdrawal of the plug from the socket. The solution of the invention is particularly suitable for a set of magnetically coupled electrical outlets in which the electrical contacts are extracted from the base by magnetic effect.

Exposé de l'inventionDisclosure of the invention

Ce but est atteint par un ensemble de prise électrique comportant :

  • un socle comprenant au moins deux premiers contacts électriques reliés à un circuit d'alimentation électrique, une première partie magnétique solidaire en mouvement des deux premiers contacts électriques, ladite première partie magnétique étant agencée pour se déplacer par effet magnétique entre une première position dans laquelle les premiers contacts électriques sont rétractés à l'intérieur du socle et une deuxième position dans laquelle les premiers contacts électriques sont à l'extérieur du socle,
  • une fiche destinée à être accouplée au socle et comprenant deux deuxièmes contacts électriques destinés à se connecter électriquement aux deux premiers contacts électriques lorsque ceux-ci sont à l'extérieur du socle et une deuxième partie magnétique agencée en vis-à-vis de la première partie magnétique lorsque la fiche est accouplée au socle pour déplacer, par effet magnétique, la première partie magnétique vers sa deuxième position, entraînant les premiers contacts électriques vers l'extérieur du socle,
  • des moyens de détection comprenant un capteur de mesure du flux magnétique, agencé pour mesurer le flux magnétique circulant entre les deux parties magnétiques, une unité de traitement agencée pour recevoir des données de flux magnétique en provenance du capteur de flux magnétique et pour générer un signal de commande lorsque la fiche est séparée du socle,
  • des moyens de déconnexion coopérant avec les moyens de détection et agencés pour déconnecter le circuit d'alimentation lors de la réception du signal de commande en provenance de l'unité de traitement.
This goal is achieved by a set of electrical outlets comprising:
  • a base comprising at least two first electrical contacts connected to an electrical supply circuit, a first magnetic part integral in movement with the two first electrical contacts, said first magnetic part being arranged to move by magnetic effect between a first position in which the first electrical contacts are retracted inside the base and a second position in which the first electrical contacts are outside the base,
  • a plug intended to be coupled to the base and comprising two second electrical contacts intended to be electrically connected to the two first electrical contacts when the latter are outside the base and a second magnetic part arranged opposite the first magnetic part when the plug is coupled to the base to move, by magnetic effect, the first magnetic part to its second position, causing the first electrical contacts to the outside of the base,
  • detection means comprising a magnetic flux measurement sensor, arranged to measure the magnetic flux flowing between the two magnetic parts, a processing unit arranged to receive magnetic flux data from the magnetic flux sensor and to generate a signal control when the plug is separated from the base,
  • disconnection means cooperating with the detection means and arranged to disconnect the supply circuit when the control signal from the processing unit is received.

Selon une particularité, l'unité de traitement comporte des premiers moyens de surveillance du niveau de variation de flux magnétique par rapport à une première valeur seuil.According to a particular feature, the processing unit comprises first means for monitoring the level of variation of magnetic flux with respect to a first threshold value.

Selon une autre particularité, l'unité de traitement comporte des deuxièmes moyens de surveillance du niveau de flux par rapport à une deuxième valeur seuil. Selon une autre particularité, l'unité de traitement comporte un circuit logique de traitement agencé pour appliquer un OU logique entre un signal de détection généré par les premiers moyens de surveillance et un signal de détection généré par les deuxièmes moyens de surveillance.According to another particular feature, the processing unit comprises second means for monitoring the level of flow with respect to a second threshold value. According to another feature, the processing unit comprises a processing logic circuit arranged to applying a logic OR between a detection signal generated by the first monitoring means and a detection signal generated by the second monitoring means.

Selon une autre particularité, les moyens de déconnexion comportent un relais électromécanique connecté sur le circuit d'alimentation.According to another particular feature, the disconnection means comprise an electromechanical relay connected to the supply circuit.

Selon une autre particularité, le socle comporte un boîtier et l'ensemble comporte une carte électronique logée dans ledit boîtier, ladite carte électronique comportant l'unité de traitement et le capteur de mesure.According to another feature, the base comprises a housing and the assembly comprises an electronic card housed in said housing, said electronic card comprising the processing unit and the measurement sensor.

Selon une autre particularité, la première partie magnétique et/ou la deuxième partie magnétique comporte au moins un aimant permanent.According to another particularity, the first magnetic part and / or the second magnetic part comprises at least one permanent magnet.

Selon une autre particularité, le capteur de mesure est positionné dans le circuit suivi par les lignes d'un champ magnétique généré par ledit aimant permanent.According to another feature, the measurement sensor is positioned in the circuit followed by the lines of a magnetic field generated by said permanent magnet.

Selon une autre particularité, l'ensemble comporte une pièce ferromagnétique agencée par rapport à l'aimant permanent pour canaliser son flux magnétique en vue de l'orienter vers le capteur de mesure. Ladite pièce ferromagnétique est par exemple disposée en contact direct avec l'aimant permanent. L'aimant permanent et la pièce ferromagnétique sont par exemple logés dans le boîtier du socle et le capteur de mesure est fixé sur ce boîtier.According to another particularity, the assembly comprises a ferromagnetic part arranged relative to the permanent magnet to channel its magnetic flux with a view to orienting it towards the measurement sensor. Said ferromagnetic part is for example placed in direct contact with the permanent magnet. The permanent magnet and the ferromagnetic part are for example housed in the housing of the base and the measurement sensor is fixed on this housing.

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 un exemple d'une architecture de l'ensemble de prise électrique de l'invention, respectivement avec la fiche séparée du socle et la fiche adaptée sur le socle,
  • La figure 2 illustre le principe de mesure du flux magnétique généré par l'ensemble magnétique employé,
  • Les figures 3A et 3B représentent de manière schématique deux variantes de réalisation du circuit de traitement employé dans l'ensemble de l'invention,
  • La figure 4 illustre le principe de détection employé dans l'invention.
Other characteristics and advantages will appear in the detailed description which follows given with reference to the appended drawings in which:
  • The figures 1A and 1B show an example of an architecture of the electrical outlet assembly of the invention, respectively with the plug separated from the base and the plug adapted to the base,
  • The figure 2 illustrates the principle of measuring the magnetic flux generated by the magnetic assembly used,
  • The figures 3A and 3B schematically represent two variant embodiments of the processing circuit employed throughout the invention,
  • The figure 4 illustrates the principle of detection employed in the invention.

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 un circuit électrique d'alimentation 15 par l'intermédiaire de fils électriques conducteurs. 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 two first electrical contacts 120, 121 are connected to an electrical supply circuit 15 by means of electrical wires. conductors. 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 annexés) 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 fixe à l'intérieur du boîtier et 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 accompanying 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 fixed inside the case and 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 tracks electrics are circular in shape and positioned concentrically.

La première partie magnétique et/ou la deuxième partie magnétique comporte au moins un aimant permanent de manière à générer un flux magnétique entre les deux parties magnétiques.The first magnetic part and / or the second magnetic part comprises at least one permanent magnet so as to generate a magnetic flux between the two magnetic parts.

Différentes architectures magnétiques pourront ainsi être envisagées, telles que celles décrites dans les demandes EP2628213 , EP2667459 ,...Cependant, celles-ci ne font pas l'objet de la présente demande et il faut comprendre que l'invention pourra s'adapter à n'importe quelle architecture du moment que celle-ci prévoit la présence d'un flux magnétique maximal entre la première partie magnétique et la deuxième partie magnétique lorsque la fiche est adaptée sur le socle et diminuant lorsque la fiche est éloignée du socle. En référence aux figures annexées, la première partie magnétique 13 comporte par exemple un aimant permanent 130 de forme annulaire et la deuxième partie magnétique 23 comporte un aimant permanent 230 de forme annulaire. L'aimant permanent 130 et la pièce ferromagnétique 230 sont destinés à se positionner de manière coaxiale lorsque la fiche 2 est approchée du socle 1. Lorsque la fiche 2 est en vis-à-vis du socle 1, l'aimant permanent 130 et l'aimant permanent 203 sont agencés de manière à présenter chacun une surface d'entrefer parallèle au plan de jonction.Different magnetic architectures can thus be envisaged, such as those described in the applications. EP2628213 , EP2667459 , ... However, these are not the subject of the present application and it should be understood that the invention can be adapted to any architecture as long as it provides for the presence of a flow. maximum magnetic between the first magnetic part and the second magnetic part when the plug is fitted on the base and decreases when the plug is moved away from the base. With reference to the appended figures, the first magnetic part 13 comprises for example a permanent magnet 130 of annular shape and the second magnetic part 23 comprises a permanent magnet 230 of annular shape. The permanent magnet 130 and the ferromagnetic part 230 are intended to position themselves coaxially when the plug 2 is approached the base 1. When the plug 2 is opposite the base 1, the permanent magnet 130 and the permanent magnet 203 are arranged so as to each have an air gap surface parallel to the junction plane.

Dans un tel ensemble de prise électrique, l'invention vise à éviter toute apparition d'arc électrique dans les zones de connexion électrique lorsque la fiche est séparée du socle. Il est nécessaire de détecter rapidement cette séparation.In such an electrical outlet assembly, the invention aims to prevent any occurrence of an electric arc in the electrical connection zones when the plug is separated from the base. It is necessary to detect this separation quickly.

Pour cela, l'ensemble de prise électrique comporte :

  • Des moyens de détection de la séparation de la fiche par rapport au socle,
  • Des moyens de déconnexion 8 du circuit électrique d'alimentation lorsque la fiche est séparée du socle.
For this, the electrical outlet set includes:
  • Means for detecting the separation of the plug from the base,
  • Means 8 for disconnecting the electrical supply circuit when the plug is separated from the base.

Ces moyens sont par exemple réalisés sur une carte électronique logée dans le boîtier 10 du socle 1.These means are for example produced on an electronic card housed in the housing 10 of the base 1.

De manière plus précise, les moyens de détection comportent un capteur 3 de mesure du flux magnétique présent entre la fiche et le socle, le flux magnétique étant maximal lorsque la fiche 2 est adaptée sur le socle 1 et diminuant au fur et à mesure que la fiche 2 est éloignée du socle 1. Le capteur 3 de flux magnétique est judicieusement positionné pour capter au mieux le flux magnétique Φ et sa variation. Préférentiellement, le capteur 3 de mesure est positionné sur le circuit parcouru par les lignes de champ magnétique L existantes entre les deux parties magnétiques 13, 23.More precisely, the detection means comprise a sensor 3 for measuring the magnetic flux present between the plug and the base, the magnetic flux being maximum when the plug 2 is fitted on the base 1 and decreasing as the plug 2 is remote from the base 1. The magnetic flux sensor 3 is judiciously positioned to best capture the magnetic flux Φ and its variation. Preferably, the measurement sensor 3 is positioned on the circuit traversed by the magnetic field lines L existing between the two magnetic parts 13, 23.

Préférentiellement, le capteur 3 de mesure est fixé au socle 1. Le capteur 3 de mesure est par exemple fixé sur l'extérieur du boîtier 10 du socle.Preferably, the measurement sensor 3 is fixed to the base 1. The measurement sensor 3 is for example fixed to the outside of the housing 10 of the base.

Avantageusement, les moyens de détection peuvent comporter une pièce 4 en matériau ferromagnétique agencée pour canaliser le flux magnétique en provenance de l'aimant permanent positionné dans le socle à destination du capteur 3 de mesure. La figure 2 représente de manière schématique le principe de canalisation du flux magnétique Φ à l'aide d'une pièce ferromagnétique 4 et le positionnement du capteur 3 pour capter ce flux magnétique. L'utilisation de cette pièce ferromagnétique 4 permet de canaliser le flux en sortie d'aimant et donc de mettre à disposition du capteur 3 un flux plus constant et d'une intensité suffisamment importante pour être capté. Cette pièce 4 présente une forte perméabilité relative, ce qui canalise bien le flux. De plus, la grande différence de perméabilité entre cette pièce ferromagnétique et l'air a pour conséquence d'obtenir des lignes de flux très perpendiculaires à la face de sortie du flux sur la pièce 4 ferromagnétique.Advantageously, the detection means may comprise a part 4 made of ferromagnetic material arranged to channel the magnetic flux coming from the permanent magnet positioned in the base to the measurement sensor 3. The figure 2 schematically represents the principle of the channeling of the magnetic flux Φ using a ferromagnetic part 4 and the positioning of the sensor 3 to capture this magnetic flux. The use of this ferromagnetic part 4 makes it possible to channel the flux at the outlet of the magnet and therefore to provide the sensor 3 with a more constant flux of a sufficiently high intensity to be captured. This part 4 has a high relative permeability, which channels the flow well. In addition, the large difference in permeability between this ferromagnetic part and the air has the consequence of obtaining flow lines very perpendicular to the output face of the flux on the ferromagnetic part 4.

Avantageusement, la pièce ferromagnétique 4 vient se loger dans le socle 1. Elle présente par exemple une forme annulaire. Elle est par exemple fixée contre la face de l'aimant permanent 130 qui est opposée à sa surface d'entrefer.Advantageously, the ferromagnetic part 4 is housed in the base 1. It has for example an annular shape. It is for example fixed against the face of the permanent magnet 130 which is opposite to its air gap surface.

Dans une première variante de réalisation représentée sur la figure 3A, les moyens de détection comportent une unité de traitement 5 comportant au moins une entrée destinée à recevoir des données de mesure analogiques en provenance du capteur 3 de mesure de flux magnétique et au moins une sortie vers laquelle l'unité de traitement 5 est capable de générer un signal de commande SIG de déconnexion. L'unité de traitement 5 comporte notamment des moyens de surveillance de la variation du flux magnétique mesuré. Lorsque la variation de flux devient inférieure à une valeur seuil S1, l'unité de traitement 5 est agencée pour générer le signal de commande SIG de déconnexion à destination des moyens de déconnexion 8. Les moyens de surveillance comportent des moyens de détermination 50 de la variation de flux par calcul de la dérivée de la courbe du flux magnétique et un comparateur 51 recevant en entrée la dérivée calculée et une valeur seuil S1 pour déterminer ledit signal de commande SIG de déconnexion. Les moyens de surveillance sont par exemple réalisés sous la forme d'un circuit électronique à composants discrets. En variante de réalisation, les moyens de surveillance pourraient inclure un microcontrôleur traitant les données de mesure de manière numérique.In a first variant embodiment shown in figure 3A , the detection means comprise a processing unit 5 comprising at least one input intended to receive analog measurement data coming from the magnetic flux measurement sensor 3 and at least one output to which the processing unit 5 is capable of generate a disconnection control signal SIG. The processing unit 5 notably comprises means for monitoring the variation in the measured magnetic flux. When the variation in flow becomes less than a threshold value S1, the processing unit 5 is arranged to generate the disconnection control signal SIG intended for the disconnection means 8. The monitoring means comprise means 50 for determining the flux variation by calculation of the derivative of the magnetic flux curve and a comparator 51 receiving as input the calculated derivative and a threshold value S1 to determine said disconnection control signal SIG. The monitoring means are for example produced in the form of an electronic circuit with discrete components. As an alternative embodiment, the monitoring means could include a microcontroller processing the measurement data digitally.

Dans une deuxième variante de réalisation représentée sur la figure 3B, les moyens de détection comportent également une unité de traitement 5 comportant au moins une entrée destinée à recevoir des données de mesure analogiques en provenance du capteur 3 de mesure de flux magnétique et au moins une sortie vers laquelle l'unité de traitement 5 est capable de générer un signal de commande SIG de déconnexion. Cette unité de traitement 5 est munie de premiers moyens de surveillance de la variation de flux magnétique tels que ceux décrits ci-dessus en liaison avec la première variante de réalisation et de deuxièmes moyens de surveillance du niveau de flux magnétique. Ces deuxièmes moyens de surveillance comportent par exemple un comparateur 61 recevant en entrée les données de mesure du flux en provenance du capteur 3 de mesure et une valeur seuil S2 nécessaire à la comparaison. Lorsque le niveau de flux descend au-dessous de la valeur seuil S2, les moyens de surveillance génèrent un signal de détection SIG_D2. Selon cette variante de réalisation, l'unité de traitement 5 comporte un circuit logique de traitement 7 agencé pour recevoir un premier signal de détection SIG_D1 en provenance des premiers moyens de surveillance et/ou un deuxième signal de détection SIG_D2 en provenance des deuxièmes moyens de surveillance. Le circuit logique de traitement 7 met en oeuvre un OU logique pour générer le signal de commande SIG de déconnexion à destination de moyens de déconnexion lors de la réception du premier signal de détection SIG_D1 et/ou du deuxième signal de détection SIG_D2.In a second variant embodiment shown in figure 3B , the detection means also comprise a processing unit 5 comprising at least one input intended to receive analog measurement data coming from the magnetic flux measurement sensor 3 and at least one output to which the processing unit 5 is capable to generate a disconnection control signal SIG. This processing unit 5 is provided with first means for monitoring the variation of magnetic flux such as those described above in connection with the first variant embodiment and with second means for monitoring the level of magnetic flux. These second monitoring means comprise for example a comparator 61 receiving as input the measurement data of the flow coming from the measurement sensor 3 and a threshold value S2 necessary for the comparison. When the level of flow drops below the threshold value S2, the monitoring means generate a detection signal SIG_D2. According to this variant embodiment, the processing unit 5 comprises a logic processing circuit 7 arranged to receive a first detection signal SIG_D1 originating from the first monitoring means and / or a second detection signal SIG_D2 originating from the second monitoring means. surveillance. The logic processing circuit 7 implements a logic OR to generate the disconnection control signal SIG intended for disconnection means when receiving the first detection signal SIG_D1 and / or the second detection signal SIG_D2.

De manière plus précise, les moyens de déconnexion 8 sont commandés sur réception du signal de commande SIG de déconnexion en provenance de l'unité de traitement 5. Ils comportent par exemple un relais électromécanique connecté en série sur le circuit d'alimentation électrique connecté aux contacts électriques du socle. Avantageusement, ils peuvent comporter également une diode de roue libre connectée en parallèle de l'enroulement du relais électromécanique et éventuellement une résistance connectée en série avec la diode de roue libre pour améliorer le temps de réaction du relais électromécanique. Les moyens de déconnexion, notamment le relais électromécanique, sont par exemple réalisés sur une carte électronique logée dans le boîtier (10) du socle. Cette carte électronique peut être identique à celle accueillant les moyens de détection décrits ci-dessus. Le circuit électrique d'alimentation 15 comporte par exemple deux bornes connectées au relais électromécanique.More precisely, the disconnection means 8 are controlled on receipt of the disconnection control signal SIG coming from the processing unit 5. They comprise for example an electromechanical relay connected in series on the electrical supply circuit connected to the devices. electrical contacts of the base. Advantageously, they can also include a freewheeling diode connected in parallel with the winding of the electromechanical relay and possibly a resistor connected in series with the freewheeling diode to improve the reaction time of the electromechanical relay. The disconnection means, in particular the electromechanical relay, are for example produced on an electronic card housed in the housing (10) of the base. This electronic card can be identical to that accommodating the detection means described above. The electric power supply circuit 15 comprises for example two terminals connected to the electromechanical relay.

Les courbes représentées sur la figure 4, illustrent la détection de la séparation à la fois par le niveau de variation du flux magnétique et par la variation du niveau de flux magnétique. On comprend que le signal de commande de déconnexion SIG passe à l'état haut lorsque le niveau de flux descend au-dessous de la valeur seuil S2 et/ou lorsque la variation de flux descend au-dessous de la valeur seuil S1.The curves shown on the figure 4 , illustrate the detection of separation both by the level of variation of the magnetic flux and by the variation of the level of magnetic flux. It will be understood that the disconnection control signal SIG goes high when the level of flow drops below the threshold value S2 and / or when the variation of flow falls below the threshold value S1.

La solution de l'invention présente de nombreux avantages, parmi lesquels :

  • La simplicité et la fiabilité des moyens employés,
  • L'encombrement limité des moyens employés, une simple carte électronique étant nécessaire et facilement logeable dans le boîtier du socle,
  • La possibilité de détecter la séparation de la fiche du socle quel que soit l'angle de retrait de la fiche.
The solution of the invention has many advantages, among which:
  • The simplicity and reliability of the means employed,
  • The limited size of the means used, a simple electronic card being necessary and easily housed in the box of the base,
  • The ability to detect the separation of the plug from the socket regardless of the angle of withdrawal of the plug.

Claims (10)

  1. Electrical connector assembly including:
    - a socket (1) comprising at least two first electrical contacts (120, 121) that are linked to an electrical power supply circuit, a first magnetic portion (13) that is constrained to move with the two first electrical contacts, said first magnetic portion (13) being arranged to move by magnetic effect between a first position in which the first electrical contacts (120, 121) are retracted inside the socket (1) and a second position in which the first electrical contacts (120, 121) are outside the socket (1);
    - a plug (2) that is intended to be coupled to the socket and comprises two second electrical contacts (220, 221) that are intended to be electrically connected to the two 8first electrical contacts (120, 121) when the latter are outside the socket (1) and a second magnetic portion (23) that is arranged to face the first magnetic portion (13) when the plug is coupled to the socket in order to move, by magnetic effect, the first magnetic portion (13) toward its second position, driving the first electrical contacts (120, 121) toward the outside of the socket,
    characterized in that:
    - the assembly includes detection means comprising a magnetic flux measurement sensor (3) that is arranged to measure the magnetic flux flowing between the two magnetic portions, a processing unit (5) that is arranged to receive magnetic flux data arising from the magnetic flux sensor and to generate a control signal (SIG) when the plug is separated from the socket;
    - disconnection means (8) cooperating with the detection means and arranged to disconnect the power supply circuit when the control signal (SIG) arising from the processing unit is received.
  2. Assembly according to Claim 1, characterized in that the processing unit (5) includes first means for monitoring the level of variation in magnetic flux with respect to a first threshold value (S1).
  3. Assembly according to Claim 2, characterized in that the processing unit (5) includes second means for monitoring the level of flux with respect to a second threshold value (S2).
  4. Assembly according to Claim 3, characterized in that the processing unit (5) includes a processing logic circuit (7) that is arranged to apply a logic OR operation between a detection signal (SIG_D1) that is generated by the first monitoring means and a detection signal (SIG_D2) that is generated by the second monitoring means.
  5. Assembly according to one of Claims 1 to 4, characterized in that the disconnection means (8) include an electromechanical relay that is connected to the power supply circuit (15).
  6. Assembly according to one of Claims 1 to 5, characterized in that the first magnetic portion and/or the second magnetic portion includes at least one permanent magnet (130).
  7. Assembly according to Claim 6, characterized in that the measurement sensor (3) is positioned in the circuit along the lines of a magnetic field that is generated by said permanent magnet (130).
  8. Assembly according to Claim 7, characterized in that it includes a ferromagnetic part (4) that is arranged with respect to the permanent magnet (130) so as to channel its magnetic flux with a view to orienting it toward the measurement sensor (3).
  9. Assembly according to Claim 8, characterized in that the socket (1) includes a housing and in that it includes an electronic circuit board that is housed in said housing, said electronic circuit board including the processing unit (5) and the measurement sensor (3).
  10. Assembly according to Claim 9, characterized in that the permanent magnet (130) and the ferromagnetic part (4) are housed in the housing (10) of the socket.
EP16742372.2A 2015-07-10 2016-07-04 Electrical power-point assembly with electrical disconnection solution Active EP3320585B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1556579A FR3038781B1 (en) 2015-07-10 2015-07-10 ELECTRICAL SOCKET ASSEMBLY WITH ELECTRIC DISCONNECT SOLUTION
PCT/FR2016/051691 WO2017009539A1 (en) 2015-07-10 2016-07-04 Electrical power-point assembly with electrical disconnection solution

Publications (2)

Publication Number Publication Date
EP3320585A1 EP3320585A1 (en) 2018-05-16
EP3320585B1 true EP3320585B1 (en) 2020-10-14

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EP (1) EP3320585B1 (en)
JP (1) JP6785834B2 (en)
KR (1) KR20180050287A (en)
CN (1) CN108140996B (en)
BR (1) BR112018000391A2 (en)
ES (1) ES2839883T3 (en)
FR (1) FR3038781B1 (en)
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WO (1) WO2017009539A1 (en)

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JP2018521477A (en) 2018-08-02
FR3038781A1 (en) 2017-01-13
JP6785834B2 (en) 2020-11-18
EP3320585A1 (en) 2018-05-16
WO2017009539A1 (en) 2017-01-19
CN108140996A (en) 2018-06-08
ES2839883T3 (en) 2021-07-06
US10122116B2 (en) 2018-11-06
US20180198232A1 (en) 2018-07-12
BR112018000391A2 (en) 2018-09-18
FR3038781B1 (en) 2017-07-28
HK1250845A1 (en) 2019-01-11
KR20180050287A (en) 2018-05-14
CN108140996B (en) 2020-06-02

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