EP2846412A1 - Electrical connector with reduced insertion force - Google Patents

Electrical connector with reduced insertion force Download PDF

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Publication number
EP2846412A1
EP2846412A1 EP14181786.6A EP14181786A EP2846412A1 EP 2846412 A1 EP2846412 A1 EP 2846412A1 EP 14181786 A EP14181786 A EP 14181786A EP 2846412 A1 EP2846412 A1 EP 2846412A1
Authority
EP
European Patent Office
Prior art keywords
plug
contact
base
electrical connector
longitudinal direction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP14181786.6A
Other languages
German (de)
French (fr)
Other versions
EP2846412B1 (en
Inventor
Patrice Retho
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hypertac SA
Original Assignee
Hypertac SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hypertac SA filed Critical Hypertac SA
Publication of EP2846412A1 publication Critical patent/EP2846412A1/en
Application granted granted Critical
Publication of EP2846412B1 publication Critical patent/EP2846412B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01R13/02—Contact members
    • 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
    • H01R13/02—Contact members
    • H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
    • 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
    • H01R13/02—Contact members
    • H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
    • H01R13/187—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with spring member in the socket
    • 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
    • H01R13/02—Contact members
    • H01R13/33—Contact members made of resilient wire
    • 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
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • 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

Definitions

  • a contact member consisting of a conductive wire fabric disposed around the longitudinal direction, on the plug or in a housing of the base.
  • the fabric defines a large number of contact points in the position inserted between the base and the plug.
  • An object of the invention is to provide a set of connectors simpler to implement, while remaining simple to manufacture.
  • the invention also relates to a set of electrical connectors comprising an electrical connector as defined above, and a plug adapted to be plugged into the base in the plugged position.
  • the set of electrical connectors is such that the plug comprises a substantially cylindrical outer surface in the longitudinal direction, the outer surface defining, in the plugged position, an internal diameter of the interstitial space, the ratio of the inner diameter on the outer diameter being less than or equal to 0.6, preferably less than or equal to 0.5.
  • the set of electrical connectors 1 comprises a socket 3 intended to be connected to a first electrical circuit (not shown), and a clean male plug 5 to be plugged into the base 1 in a longitudinal direction L, the plug 5 being intended to be connected to a second electrical circuit (not shown).
  • the set of electrical connectors 1 also comprises a contact member 7.
  • the base 3 has for example a general shape of socket.
  • the base 3 is made of a copper alloy, for example brass.
  • the base 3 advantageously has axial symmetry about the longitudinal direction L.
  • the base 3 defines a housing 9 to receive the plug 5.
  • the base 3 advantageously comprises external claws 11 intended to allow its attachment in a frame (not shown). According to a variant not shown, the base 3 is fixed on said frame with a clip.
  • the base 3 comprises a recess 13 receiving the contact member 7.
  • the base 3 has an inner contact surface 15 located axially at the bottom of the recess 13.
  • the housing 9 extends longitudinally over a length L1 for example between 0.1 and 0.5 mm.
  • the housing 9 has a shape adapted to cooperate with the plug 5 by plugging in the longitudinal direction L.
  • pluging means inserting the plug 5 into the base 3 in order to make electrical contact between these two elements.
  • the recess 13 has a length L2 in the longitudinal direction L representing a fraction of the length L1, for example about one third.
  • the recess 13 is advantageously substantially cylindrical about the longitudinal direction L.
  • the plug 5 is shown away from the base 3, in an unplugged position.
  • the plug 5 has a generally cylindrical shape.
  • the plug 5 has an outer contact surface 19
  • the interstitial space 17 is annular around the longitudinal direction L.
  • the interstitial space 17 extends between the inner contact surface 15 of the base 3 and the outer contact surface 19 of the plug 5.
  • the interstitial space 17 has, for example, a rectangular section in radial section planes P ( figure 1 ).
  • the inner contact surface 15 of the base 3 defines an outer diameter DE of the interstitial space 17, advantageously between 0.9 and 2 mm, for example between 1.0 and 1.3 mm.
  • the outer contact surface 19 of the plug 5 defines an inner diameter DI of the interstitial space 17, advantageously between 0.3 and 0.7 mm, for example between 0.4 and 0.5 mm.
  • the DI / DE ratio is advantageously less than or equal to 0.6, for example less than or equal to 0.5.
  • the contact member 7 consists of a wire folded on itself to form turns 21, 23 around the longitudinal direction L.
  • the contact member 7 advantageously comprises a number of turns less than equal to five, preferably less than or equal to two. In the example shown, the contact member 7 comprises two turns 21 and 23.
  • the metal wire which is constituted by the contact member 7 is for example cylindrical.
  • the metal wire comprises at least 90% by weight an alloy consisting of copper and beryllium.
  • the wire is covered with a layer comprising at least 90% by weight of one of gold and a gold and nickel alloy.
  • the wire has a wire diameter DF ( figure 3 ) advantageously between 0.05 and 0.2 mm, for example between 0.9 and 0.12 mm.
  • the wire forms a plurality of elbows 25, 27, 29, 31, 33 in succession ( figure 2 ).
  • the wire further comprises a plurality of substantially rectilinear portions 35, 37, 39, 41, 43.
  • the wire successively comprises the portion 35, the elbow 25, the portion 37, the elbow 27, the portion 39, the elbow 29, the portion 41, the elbow 31, the portion 43, and the elbow 33.
  • the wire In the unfolded state (not shown), the wire has a length (not shown) advantageously between 3 and 10 mm, for example between 4 and 6 mm.
  • the bends 25, 27, 29, 31, 33 are for example five in number.
  • any two successive bends taken from bends 25, 27, 29, 31, 33 are angularly spaced about the longitudinal direction L by an angle ⁇ of about 135 °.
  • the elbows 25, 27, 29, 31, 33 are for example respectively located at about 0 °, 135 °, 270 °, 405 °, 540 ° relative to the longitudinal direction L.
  • Each elbow 25, 27, 29, 31, 33 forms an angle ⁇ of about 45 °.
  • Each bend 25, 27, 29, 31, 33 comprises, in the inserted position, a contact surface forming a first contact area 25A, 27A, 29A, 31A, 33A with the inner surface 15 of the base 3.
  • the first contact areas 25A, 27A, 29A, 31A, 33A are substantially point-like.
  • the first contact areas 25A, 27A, 29A, 31A, 33A have, for example, in a plane T perpendicular to the longitudinal direction L, a radius of curvature R1 less than or equal to 30% of the outer diameter DE.
  • Any first two consecutive contact zones taken from the first contact areas 25A, 27A, 29A, 31A, 33A are separated, in projection on the T plane, by a distance D greater than or equal to 60% of the external diameter DE.
  • the portions 35, 37, 39, 41, 43 are for example five in number.
  • the portions 35, 37, 39, 41, 43 respectively comprise contact surfaces forming, in the plugged position, second contact zones 35B, 37B, 39B, 41B, 43B between the contact member 7 and the outer surface. 19 of the card 5.
  • the second contact areas 35B, 37B, 39B, 41B, 43B are advantageously five in number and for example substantially one-off.
  • the plug 5 is plugged into the base 3 in the longitudinal direction L.
  • the contact member 7 makes an electrical contact between the plug 5 and the base 3, so between the first circuit and the second circuit mentioned above.
  • Each first contact zone 25A, 27A, 29A, 31A, 33A is in electrical contact with the inner surface 15 of the base 3.
  • Each second contact zone 35B, 37B, 39B, 41B, 43B is in contact with the surface 19 of the file 5.
  • the number of second contact areas 35B, 37B, 39B, 41B, 43B is reduced.
  • the insertion force of the plug 5 in the base 3 is reduced compared to the aforementioned prior art assemblies.
  • the set of connectors 1 is also simple to manufacture.
  • the second contact areas 35B, 37B, 39B, 41B, 43B are not aligned with each other in the longitudinal direction L direction, the wear caused by the contact member 7 on the plug 5 is less than that caused by the contact members of the prior art having longitudinal alignments of the second contact areas. This ensures a good quality electrical contact for a longer time.
  • the contact member 7 having a reduced number of turns, in the example two turns, the longitudinal extension of the contact member 7 is reduced. This reduces the length L2 of the recess 13 and the length L1 of the housing 9.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

Connecteur électrique (3-7) comportant : une embase (3) destinée à recevoir une fiche (5) propre à être enfichée dans l'embase selon une direction longitudinale (L) dans une position enfichée, dans laquelle l'embase et la fiche définissent entre elles un espace interstitiel, et un organe de contact (7) destiné à s'étendre radialement dans l'espace interstitiel lorsque la fiche est dans la position enfichée. L'organe de contact est propre à assurer un contact électrique entre la fiche et l'embase et comprend un fil métallique replié sur lui-même pour former des spires (21, 23) autour de la direction longitudinale. Les spires sont en nombre inférieur ou égal à cinq. Ensemble de connecteurs électriques comportant le connecteur électrique (3-7) et la fiche (5).Electrical connector (3-7) comprising: a base (3) intended to receive a plug (5) adapted to be plugged into the base in a longitudinal direction (L) in a plugged position, in which the base and the plug define between them an interstitial space, and a contact member (7) intended to extend radially in the interstitial space when the plug is in the plugged position. The contact member is adapted to provide electrical contact between the plug and the base and comprises a wire folded on itself to form turns (21, 23) around the longitudinal direction. The turns are less than or equal to five. Electrical connector assembly comprising the electrical connector (3-7) and the plug (5).

Description

La présente invention concerne un connecteur électrique comportant :

  • une embase destinée à recevoir une fiche, la fiche étant propre à être enfichée dans l'embase selon une direction longitudinale dans une position enfichée, dans laquelle l'embase et la fiche définissent entre elles un espace interstitiel, et
  • un organe de contact destiné à s'étendre radialement dans l'espace interstitiel lorsque la fiche est dans la position enfichée, l'organe de contact étant propre à assurer un contact électrique entre la fiche et l'embase.
The present invention relates to an electrical connector comprising:
  • a base for receiving a plug, the plug being adapted to be plugged into the base in a longitudinal direction in a plugged position, in which the base and the plug define between them an interstitial space, and
  • a contact member for extending radially in the interstitial space when the plug is in the plugged position, the contact member being adapted to provide electrical contact between the plug and the base.

Pour réaliser un bon contact électrique entre la fiche et l'embase, il est connu du document FR-A-2 816 453 d'utiliser un organe de contact constitué d'un tissu de fils conducteurs disposé autour de la direction longitudinale, sur la fiche ou bien dans un logement de l'embase. Le tissu définit un grand nombre de points de contacts dans la position enfichée entre l'embase et la fiche.To achieve a good electrical contact between the plug and the base, it is known from the document FR-A-2,816,453 to use a contact member consisting of a conductive wire fabric disposed around the longitudinal direction, on the plug or in a housing of the base. The fabric defines a large number of contact points in the position inserted between the base and the plug.

Alternativement, il est également connu, par exemple du document DE-A-38 29 486 , d'utiliser un organe de contact constitué d'un ressort comportant un grand nombre de spires hexagonales enroulées autour de la direction longitudinale, le ressort garnissant un logement de l'embase.Alternatively, it is also known, for example from the document DE-A-38 29 486 , using a contact member consisting of a spring having a large number of hexagonal coils wound around the longitudinal direction, the spring lining a housing of the base.

Toutefois, de tels organes de contact, bien qu'assurant un bon contact électrique, rendent parfois l'insertion de la fiche dans l'embase, ou le retrait de la fiche de l'embase, mécaniquement difficile.However, such contact members, although ensuring a good electrical contact, sometimes make the insertion of the plug in the base, or removal of the plug of the base, mechanically difficult.

Un but de l'invention est de fournir un ensemble de connecteurs plus simple à mettre en oeuvre, tout en restant simple à fabriquer.An object of the invention is to provide a set of connectors simpler to implement, while remaining simple to manufacture.

A cet effet, l'invention a pour objet un connecteur électrique comprenant :

  • une embase destinée à recevoir une fiche, la fiche étant propre à être enfichée dans l'embase selon une direction longitudinale dans une position enfichée, dans laquelle l'embase et la fiche définissent entre elles un espace interstitiel, et
  • un organe de contact destiné à s'étendre radialement dans l'espace interstitiel lorsque la fiche est dans la position enfichée, l'organe de contact étant propre à assurer un contact électrique entre la fiche et l'embase, l'organe de contact comprenant un fil métallique replié sur lui-même pour former des spires autour de la direction longitudinale,
les spires étant en nombre inférieur ou égal à cinq, de préférence inférieur ou égal à deux.For this purpose, the subject of the invention is an electrical connector comprising:
  • a base for receiving a plug, the plug being adapted to be plugged into the base in a longitudinal direction in a plugged position, in which the base and the plug define between them an interstitial space, and
  • a contact member for extending radially in the interstitial space when the plug is in the plugged position, the contact member being adapted to provide electrical contact between the plug and the base, the contact member comprising a wire folded on itself to form turns around the longitudinal direction,
the turns being less than or equal to five, preferably less than or equal to two.

Selon des modes particuliers de réalisation, le connecteur électrique comprend l'une ou plusieurs des caractéristiques suivantes, prise(s) isolément ou selon toutes les combinaisons techniquement possibles :

  • le fil métallique comporte une pluralité de coudes, les coudes comportant respectivement des premières zones de contact de l'organe de contact avec une surface intérieure de l'embase, la surface intérieure étant sensiblement cylindrique selon la direction longitudinale définissant un diamètre externe de l'espace interstitiel, les premières zones de contact étant de préférence au nombre de cinq ;
  • deux premières zones de contact consécutives quelconques prises parmi les premières zones de contact sont séparées, en projection sur un plan transversal perpendiculaire à la direction longitudinale, par une distance supérieure ou égale à 60% du diamètre externe ;
  • les coudes présentent, dans un plan transversal perpendiculaire à la direction longitudinale, un rayon de courbure inférieur ou égal à 30% du diamètre externe ;
  • le fil métallique comporte une pluralité de portions sensiblement rectilignes destinées à comporter respectivement, dans la position enfichée, des secondes zones de contact de l'organe de contact avec une surface extérieure de la fiche, les secondes zones de contact étant de préférence au nombre de cinq ;
  • le fil métallique comprend à au moins 90% en masse un alliage constitué de cuivre et de béryllium ;
  • le fil métallique est recouvert d'une couche comprenant à au moins 90% en masse l'un parmi l'or et un alliage d'or et de nickel.
According to particular embodiments, the electrical connector comprises one or more of the following characteristics, taken separately or in any technically possible combination:
  • the wire comprises a plurality of bends, the bends respectively having first contact areas of the contact member with an inner surface of the base, the inner surface being substantially cylindrical in the longitudinal direction defining an outer diameter of the interstitial space, the first contact areas preferably being five in number;
  • two first consecutive contact zones of any of the first contact areas are separated, in projection on a transverse plane perpendicular to the longitudinal direction, by a distance greater than or equal to 60% of the outer diameter;
  • the bends have, in a transverse plane perpendicular to the longitudinal direction, a radius of curvature less than or equal to 30% of the outer diameter;
  • the wire comprises a plurality of substantially rectilinear portions intended respectively to comprise, in the plugged position, second contact zones of the contact member with an external surface of the plug, the second contact zones being preferably of the number of five ;
  • the wire comprises at least 90% by weight an alloy consisting of copper and beryllium;
  • the wire is covered with a layer comprising at least 90% by weight one of gold and a gold and nickel alloy.

L'invention concerne aussi un ensemble de connecteurs électriques comprenant un connecteur électrique tel que défini ci-dessus, et une fiche propre à être enfichée dans l'embase dans la position enfichée.The invention also relates to a set of electrical connectors comprising an electrical connector as defined above, and a plug adapted to be plugged into the base in the plugged position.

Selon un mode particulier de réalisation, l'ensemble de connecteurs électriques est tel que la fiche comprend une surface extérieure sensiblement cylindrique selon la direction longitudinale, la surface extérieure définissant, dans la position enfichée, un diamètre interne de l'espace interstitiel, le rapport du diamètre interne sur le diamètre externe étant inférieur ou égal à 0,6, de préférence inférieur ou égal à 0,5.According to a particular embodiment, the set of electrical connectors is such that the plug comprises a substantially cylindrical outer surface in the longitudinal direction, the outer surface defining, in the plugged position, an internal diameter of the interstitial space, the ratio of the inner diameter on the outer diameter being less than or equal to 0.6, preferably less than or equal to 0.5.

L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple, et faite en se référant aux dessins annexés, sur lesquels :

  • la figure 1 est une vue en coupe selon un plan passant par la direction longitudinale d'un ensemble de connecteurs selon l'invention, l'ensemble étant dans une position non enfichée,
  • la figure 2 est une vue de face, selon la direction longitudinale, de l'organe de contact de l'ensemble représenté sur la figure 1, et
  • la figure 3 est une vue de profil de l'organe de contact représenté sur les figures 1 et 2.
The invention will be better understood on reading the description which follows, given solely by way of example, and with reference to the appended drawings, in which:
  • the figure 1 is a sectional view along a plane passing through the longitudinal direction of a set of connectors according to the invention, the assembly being in an unplugged position,
  • the figure 2 is a front view, in the longitudinal direction, of the contact member of the assembly shown in FIG. figure 1 , and
  • the figure 3 is a profile view of the contact member shown on the figures 1 and 2 .

En référence à la figure 1, on décrit un ensemble de connecteurs électriques 1 selon l'invention. L'ensemble de connecteurs électriques 1 comprend une embase 3 femelle destinée à être reliée à un premier circuit électrique (non représenté), et une fiche 5 mâle propre à être enfichée dans l'embase 1 selon une direction longitudinale L, la fiche 5 étant destinée à être reliée à un second circuit électrique (non représenté). L'ensemble de connecteurs électriques 1 comprend aussi un organe de contact 7.With reference to the figure 1 a set of electrical connectors 1 according to the invention is described. The set of electrical connectors 1 comprises a socket 3 intended to be connected to a first electrical circuit (not shown), and a clean male plug 5 to be plugged into the base 1 in a longitudinal direction L, the plug 5 being intended to be connected to a second electrical circuit (not shown). The set of electrical connectors 1 also comprises a contact member 7.

L'embase 3 présente par exemple une forme générale de douille. L'embase 3 est constituée d'un alliage de cuivre, par exemple du laiton. L'embase 3 présente avantageusement une symétrie axiale autour de la direction longitudinale L.The base 3 has for example a general shape of socket. The base 3 is made of a copper alloy, for example brass. The base 3 advantageously has axial symmetry about the longitudinal direction L.

L'embase 3 définit un logement 9 pour recevoir la fiche 5.The base 3 defines a housing 9 to receive the plug 5.

L'embase 3 comporte avantageusement des griffes externes 11 destinées à permettre sa fixation dans un bâti (non représenté). Selon une variante non représentée, l'embase 3 est fixée sur ledit bâti à l'aide d'un clip.The base 3 advantageously comprises external claws 11 intended to allow its attachment in a frame (not shown). According to a variant not shown, the base 3 is fixed on said frame with a clip.

L'embase 3 comporte un évidement 13 recevant l'organe contact 7. L'embase 3 comporte une surface intérieure de contact 15 située axialement au fond de l'évidement 13.The base 3 comprises a recess 13 receiving the contact member 7. The base 3 has an inner contact surface 15 located axially at the bottom of the recess 13.

Le logement 9 s'étend longitudinalement sur une longueur L1 par exemple comprise entre 0,1 et 0,5 mm. Le logement 9 présente une forme adaptée pour coopérer avec la fiche 5 par enfichage selon la direction longitudinale L.The housing 9 extends longitudinally over a length L1 for example between 0.1 and 0.5 mm. The housing 9 has a shape adapted to cooperate with the plug 5 by plugging in the longitudinal direction L.

Par « enfichage », on entend l'insertion de la fiche 5 dans l'embase 3 dans le but de réaliser un contact électrique entre ces deux éléments.By "plugging" means inserting the plug 5 into the base 3 in order to make electrical contact between these two elements.

L'évidement 13 présente une longueur L2 selon la direction longitudinale L représentant une fraction de la longueur L1, par exemple environ un tiers. L'évidement 13 est avantageusement sensiblement cylindrique autour de la direction longitudinale L.The recess 13 has a length L2 in the longitudinal direction L representing a fraction of the length L1, for example about one third. The recess 13 is advantageously substantially cylindrical about the longitudinal direction L.

Sur la figure 1, la fiche 5 est représentée à l'écart de l'embase 3, dans une position non enfichée. La fiche 5 présente une forme générale cylindrique. Lorsque la fiche 5 est enfichée dans l'embase 3 dans une position enfichée (non représentée), elle définit avec l'embase 3 un espace interstitiel 17. La fiche 5 comporte une surface extérieure de contact 19On the figure 1 , the plug 5 is shown away from the base 3, in an unplugged position. The plug 5 has a generally cylindrical shape. When the plug 5 is plugged into the base 3 in a plugged position (not shown), it defines with the base 3 an interstitial space 17. The plug 5 has an outer contact surface 19

L'espace interstitiel 17 est annulaire autour de la direction longitudinale L. L'espace interstitiel 17 s'étend entre la surface intérieure de contact 15 de l'embase 3 et la surface extérieure de contact 19 de la fiche 5. L'espace interstitiel 17 présente par exemple une section rectangulaire selon des plans de coupe P radiaux (figure 1).The interstitial space 17 is annular around the longitudinal direction L. The interstitial space 17 extends between the inner contact surface 15 of the base 3 and the outer contact surface 19 of the plug 5. The interstitial space 17 has, for example, a rectangular section in radial section planes P ( figure 1 ).

La surface intérieure de contact 15 de l'embase 3 définit un diamètre externe DE de l'espace interstitiel 17, avantageusement compris entre 0,9 et 2 mm, par exemple entre 1,0 et 1,3 mm.The inner contact surface 15 of the base 3 defines an outer diameter DE of the interstitial space 17, advantageously between 0.9 and 2 mm, for example between 1.0 and 1.3 mm.

La surface extérieure de contact 19 de la fiche 5 définit un diamètre interne DI de l'espace interstitiel 17, avantageusement compris entre 0,3 et 0,7 mm, par exemple entre 0,4 et 0,5 mm.The outer contact surface 19 of the plug 5 defines an inner diameter DI of the interstitial space 17, advantageously between 0.3 and 0.7 mm, for example between 0.4 and 0.5 mm.

Le ratio DI / DE est avantageusement inférieur ou égal à 0,6, par exemple inférieur ou égal à 0,5.The DI / DE ratio is advantageously less than or equal to 0.6, for example less than or equal to 0.5.

Comme visible sur les figures 2 et 3, l'organe de contact 7 est constitué d'un fil métallique replié sur lui-même pour former des spires 21, 23 autour de la direction longitudinale L.As visible on Figures 2 and 3 , the contact member 7 consists of a wire folded on itself to form turns 21, 23 around the longitudinal direction L.

Par « spire », on entend une portion du fil faisant sensiblement un tour complet autour de la direction longitudinale L."Spire" means a portion of the wire substantially making a complete turn around the longitudinal direction L.

L'organe de contact 7 comprend avantageusement un nombre de spires inférieur au égal à cinq, de préférence inférieur ou égal à deux. Dans l'exemple représenté, l'organe de contact 7 comprend deux spires 21 et 23.The contact member 7 advantageously comprises a number of turns less than equal to five, preferably less than or equal to two. In the example shown, the contact member 7 comprises two turns 21 and 23.

Le fil métallique dont est constitué l'organe de contact 7 est par exemple cylindrique.The metal wire which is constituted by the contact member 7 is for example cylindrical.

Selon un mode particulier de réalisation, le fil métallique comprend à au moins 90% en masse un alliage constitué de cuivre et de béryllium. Avantageusement, le fil métallique est recouvert d'une couche comprenant à au moins 90% en masse l'un parmi l'or et un alliage d'or et de nickel.According to a particular embodiment, the metal wire comprises at least 90% by weight an alloy consisting of copper and beryllium. Advantageously, the wire is covered with a layer comprising at least 90% by weight of one of gold and a gold and nickel alloy.

Le fil métallique présente un diamètre de fil DF (figure 3) avantageusement compris entre 0,05 et 0,2 mm, par exemple entre 0,9 et 0,12 mm.The wire has a wire diameter DF ( figure 3 ) advantageously between 0.05 and 0.2 mm, for example between 0.9 and 0.12 mm.

Le fil métallique forme une pluralité de coudes 25, 27, 29, 31, 33 successifs (figure 2) . Le fil métallique comprend en outre une pluralité de portions 35, 37, 39, 41, 43 sensiblement rectilignes. Dans l'exemple représenté, le fil métallique comprend successivement la portion 35, le coude 25, la portion 37, le coude 27, la portion 39, le coude 29, la portion 41, le coude 31, la portion 43, et le coude 33.The wire forms a plurality of elbows 25, 27, 29, 31, 33 in succession ( figure 2 ). The wire further comprises a plurality of substantially rectilinear portions 35, 37, 39, 41, 43. In the example shown, the wire successively comprises the portion 35, the elbow 25, the portion 37, the elbow 27, the portion 39, the elbow 29, the portion 41, the elbow 31, the portion 43, and the elbow 33.

A l'état déplié (non représenté), le fil métallique présente une longueur (non représentée) avantageusement comprise entre 3 et 10 mm, par exemple entre 4 et 6 mm.In the unfolded state (not shown), the wire has a length (not shown) advantageously between 3 and 10 mm, for example between 4 and 6 mm.

Les coudes 25, 27, 29, 31, 33 sont par exemple au nombre de cinq.The bends 25, 27, 29, 31, 33 are for example five in number.

Deux coudes successifs quelconques pris parmi les coudes 25, 27, 29, 31, 33 sont espacés angulairement autour de la direction longitudinale L d'un angle α valant environ 135°. Dit autrement, les coudes 25, 27, 29, 31, 33 sont par exemple respectivement situées à environ 0°, 135°, 270°, 405°, 540° par rapport à la direction longitudinale L. Chaque coude 25, 27, 29, 31, 33 forme un angle β d'environ 45°.Any two successive bends taken from bends 25, 27, 29, 31, 33 are angularly spaced about the longitudinal direction L by an angle α of about 135 °. In other words, the elbows 25, 27, 29, 31, 33 are for example respectively located at about 0 °, 135 °, 270 °, 405 °, 540 ° relative to the longitudinal direction L. Each elbow 25, 27, 29, 31, 33 forms an angle β of about 45 °.

Chaque coude 25, 27, 29, 31, 33 comporte, dans la position enfichée, une surface de contact formant une première zone de contact 25A, 27A, 29A, 31 A, 33A avec la surface intérieure 15 de l'embase 3.Each bend 25, 27, 29, 31, 33 comprises, in the inserted position, a contact surface forming a first contact area 25A, 27A, 29A, 31A, 33A with the inner surface 15 of the base 3.

Les premières zones de contact 25A, 27A, 29A, 31 A, 33A sont sensiblement ponctuelles.The first contact areas 25A, 27A, 29A, 31A, 33A are substantially point-like.

Les premières zones de contact 25A, 27A, 29A, 31 A, 33A présentent par exemple, dans un plan T perpendiculaire à la direction longitudinale L, un rayon de courbure R1 inférieur ou égal à 30% du diamètre externe DE.The first contact areas 25A, 27A, 29A, 31A, 33A have, for example, in a plane T perpendicular to the longitudinal direction L, a radius of curvature R1 less than or equal to 30% of the outer diameter DE.

Deux premières zones de contact consécutives quelconques prises parmi les premières zones de contact 25A, 27A, 29A, 31 A, 33A sont séparées, en projection sur le plan T, par une distance D supérieure ou égale à 60 % du diamètre externe DE.Any first two consecutive contact zones taken from the first contact areas 25A, 27A, 29A, 31A, 33A are separated, in projection on the T plane, by a distance D greater than or equal to 60% of the external diameter DE.

Les portions 35, 37, 39, 41, 43 sont par exemple au nombre de cinq.The portions 35, 37, 39, 41, 43 are for example five in number.

Les portions 35, 37, 39, 41, 43 comprennent respectivement des surfaces de contact formant, dans la position enfichée, des secondes zones de contact 35B, 37B, 39B, 41 B, 43B entre l'organe de contact 7 et la surface extérieure 19 de la fiche 5.The portions 35, 37, 39, 41, 43 respectively comprise contact surfaces forming, in the plugged position, second contact zones 35B, 37B, 39B, 41B, 43B between the contact member 7 and the outer surface. 19 of the card 5.

Les secondes zones de contact 35B, 37B, 39B, 41 B, 43B sont avantageusement au nombre de cinq et par exemple sensiblement ponctuelles.The second contact areas 35B, 37B, 39B, 41B, 43B are advantageously five in number and for example substantially one-off.

Le fonctionnement de l'ensemble de connecteurs 1 va maintenant être décrit.The operation of the connector assembly 1 will now be described.

Pour mettre en contact électrique le premier circuit électrique (non représenté) avec le second circuit électrique (non représenté), la fiche 5 est enfichée dans l'embase 3 selon la direction longitudinale L.To put the first electrical circuit (not shown) in electrical contact with the second electrical circuit (not shown), the plug 5 is plugged into the base 3 in the longitudinal direction L.

Dans la position enfichée, l'organe de contact 7 réalise un contact électrique entre la fiche 5 et l'embase 3, donc entre le premier circuit et le second circuit mentionnées plus haut.In the plugged position, the contact member 7 makes an electrical contact between the plug 5 and the base 3, so between the first circuit and the second circuit mentioned above.

Chaque première zone de contact 25A, 27A, 29A, 31A, 33A est en contact électrique avec la surface intérieure 15 de l'embase 3. Chaque seconde zone de contact 35B, 37B, 39B, 41 B, 43B est en contact avec la surface extérieure 19 de la fiche 5.Each first contact zone 25A, 27A, 29A, 31A, 33A is in electrical contact with the inner surface 15 of the base 3. Each second contact zone 35B, 37B, 39B, 41B, 43B is in contact with the surface 19 of the file 5.

Grâce aux caractéristiques décrites ci-dessus, le nombre des secondes zones de contact 35B, 37B, 39B, 41 B, 43B est réduit. L'effort d'insertion de la fiche 5 dans l'embase 3 est réduit par rapport aux ensembles de l'art antérieur précités. L'ensemble de connecteurs 1 est par ailleurs simple à fabriquer.With the features described above, the number of second contact areas 35B, 37B, 39B, 41B, 43B is reduced. The insertion force of the plug 5 in the base 3 is reduced compared to the aforementioned prior art assemblies. The set of connectors 1 is also simple to manufacture.

En outre, les secondes zones de contact 35B, 37B, 39B, 41 B, 43B n'étant pas alignées les unes avec les autres selon la direction la direction longitudinale L, l'usure provoquée par l'organe de contact 7 sur la fiche 5 est moindre que celle provoquée par les organes de contact de l'art antérieur présentant des alignements longitudinaux des secondes zones de contacts. Ceci permet d'assurer pendant plus longtemps un contact électrique de bonne qualité.In addition, the second contact areas 35B, 37B, 39B, 41B, 43B are not aligned with each other in the longitudinal direction L direction, the wear caused by the contact member 7 on the plug 5 is less than that caused by the contact members of the prior art having longitudinal alignments of the second contact areas. This ensures a good quality electrical contact for a longer time.

Enfin, l'organe de contact 7 présentant un nombre de spires réduit, dans l'exemple deux spires, l'extension longitudinale de l'organe de contact 7 est réduite. Ceci permet de réduire la longueur L2 de l'évidement 13 et la longueur L1 du logement 9.Finally, the contact member 7 having a reduced number of turns, in the example two turns, the longitudinal extension of the contact member 7 is reduced. This reduces the length L2 of the recess 13 and the length L1 of the housing 9.

Claims (9)

Connecteur électrique (3-7) comprenant : - une embase (3) destinée à recevoir une fiche (5), la fiche (5) étant propre à être enfichée dans l'embase (3) selon une direction longitudinale (L) dans une position enfichée, dans laquelle l'embase (3) et la fiche (5) définissent entre elles un espace interstitiel (17), et - un organe de contact (7) destiné à s'étendre radialement dans l'espace interstitiel (17) lorsque la fiche (5) est dans la position enfichée, l'organe de contact (7) étant propre à assurer un contact électrique entre la fiche (5) et l'embase (3), l'organe de contact (7) comprenant un fil métallique replié sur lui-même pour former des spires (21, 23) autour de la direction longitudinale (L), les spires (21, 23) étant en nombre inférieur ou égal à cinq, de préférence inférieur ou égal à deux.Electrical connector (3-7) comprising: - a base (3) for receiving a plug (5), the plug (5) being adapted to be plugged into the base (3) in a longitudinal direction (L) in a plugged position, wherein the base (5) 3) and the plug (5) define between them an interstitial space (17), and - a contact member (7) for extending radially in the interstitial space (17) when the plug (5) is in the plugged position, the contact member (7) being adapted to ensure electrical contact between the plug (5) and the base (3), the contact member (7) comprising a wire folded on itself to form turns (21, 23) around the longitudinal direction (L), the turns (21, 23) being less than or equal to five, preferably less than or equal to two. Connecteur électrique (3-7) selon la revendication 1, dans lequel le fil métallique comporte une pluralité de coudes (25, 27, 29, 31, 33), les coudes (25, 27, 29, 31, 33) comportant respectivement des premières zones de contact (25A, 27A, 29A, 31 A, 33A) électrique de l'organe de contact (7) avec une surface intérieure (15) de l'embase (3), la surface intérieure (3) étant sensiblement cylindrique selon la direction longitudinale (L) et définissant un diamètre externe (DE) de l'espace interstitiel (17), les premières zones de contact (25A, 27A, 29A, 31 A, 33A) étant de préférence au nombre de cinq.An electrical connector (3-7) according to claim 1, wherein the wire has a plurality of bends (25, 27, 29, 31, 33), the bends (25, 27, 29, 31, 33) respectively having first electrical contact areas (25A, 27A, 29A, 31A, 33A) of the contact member (7) with an inner surface (15) of the base (3), the inner surface (3) being substantially cylindrical in the longitudinal direction (L) and defining an outer diameter (DE) of the interstitial space (17), the first contact areas (25A, 27A, 29A, 31A, 33A) being preferably five in number. Connecteur électrique (3-7) selon la revendication 2, dans lequel deux premières zones de contact consécutives quelconques prises parmi les premières zones de contact (25A, 27A, 29A, 31 A, 33A) sont séparées, en projection sur un plan transversal (T) perpendiculaire à la direction longitudinale (L), par une distance (D) supérieure ou égale à 60% du diamètre externe (DE).An electrical connector (3-7) according to claim 2, wherein any two of any first contact areas selected from the first contact areas (25A, 27A, 29A, 31A, 33A) are separated, projecting on a transverse plane ( T) perpendicular to the longitudinal direction (L), by a distance (D) greater than or equal to 60% of the outer diameter (DE). Connecteur électrique (3-7) selon la revendication 2 ou 3, dans lequel les coudes (25, 27, 29, 31, 33) présentent, dans un plan transversal (T) perpendiculaire à la direction longitudinale (L), un rayon de courbure (R1) inférieur ou égal à 30% du diamètre externe (DE).Electrical connector (3-7) according to claim 2 or 3, wherein the elbows (25, 27, 29, 31, 33) have, in a transverse plane (T) perpendicular to the longitudinal direction (L), a radius of curvature (R1) less than or equal to 30% of the outer diameter (DE). Connecteur électrique (3-7) selon l'une quelconque des revendications 1 à 4, dans lequel fil métallique comporte une pluralité de portions (35, 37, 39, 41, 43) sensiblement rectilignes destinées à comporter respectivement, dans la position enfichée, des secondes zones de contact (35B, 37B, 39B, 41 B, 43B) de l'organe de contact (7) avec une surface extérieure (19) de la fiche (5), les secondes zones de contact (35B, 37B, 39B, 41 B, 43B) étant de préférence au nombre de cinq.Electrical connector (3-7) according to any one of claims 1 to 4, wherein the metal wire comprises a plurality of substantially rectilinear portions (35, 37, 39, 41, 43) intended respectively to comprise, in the plugged position, second contact areas (35B, 37B, 39B, 41B, 43B) of the contact member (7) with an outer surface (19) of the plug (5), the second contact areas (35B, 37B, 39B, 41B, 43B) being preferably five in number. Connecteur électrique (3-7) selon l'une quelconque des revendications 1 à 5, dans lequel le fil métallique comprend à au moins 90% en masse un alliage constitué de cuivre et de béryllium.An electrical connector (3-7) according to any one of claims 1 to 5, wherein the wire comprises at least 90% by weight an alloy consisting of copper and beryllium. Connecteur électrique (3-7) selon l'une quelconque des revendications 1 à 6, dans lequel le fil métallique est recouvert d'une couche comprenant à au moins 90% en masse l'un parmi l'or et un alliage d'or et de nickel.An electrical connector (3-7) according to any one of claims 1 to 6, wherein the wire is covered with a layer comprising at least 90% by weight one of gold and a gold alloy and nickel. Ensemble de connecteurs électriques (1) comprenant un connecteur électrique (3-7) selon l'une quelconque des revendication 1 à 7, et une fiche (5) propre à être enfichée dans l'embase dans la position enfichée.Electrical connector assembly (1) comprising an electrical connector (3-7) according to any one of claims 1 to 7, and a plug (5) adapted to be plugged into the base in the plugged position. Ensemble de connecteurs électriques (1) selon la revendication 8, dans lequel la fiche (5) comprend une surface extérieure (19) sensiblement cylindrique selon la direction longitudinale (L), la surface extérieure (19) définissant, dans la position enfichée, un diamètre interne (DI) de l'espace interstitiel (17), le rapport du diamètre interne (DI) sur le diamètre externe (DE) étant inférieur ou égal à 0,6, de préférence inférieur ou égal à 0,5.Electrical connector assembly (1) according to claim 8, wherein the plug (5) comprises an outer surface (19) substantially cylindrical in the longitudinal direction (L), the outer surface (19) defining, in the plugged position, a internal diameter (DI) of the interstitial space (17), the ratio of the internal diameter (DI) to the outer diameter (DE) being less than or equal to 0.6, preferably less than or equal to 0.5.
EP14181786.6A 2013-09-04 2014-08-21 Electrical connector with reduced insertion force Not-in-force EP2846412B1 (en)

Applications Claiming Priority (1)

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FR1358463A FR3010241B1 (en) 2013-09-04 2013-09-04 ELECTRICAL CONNECTOR WITH REDUCED INSERTION EFFORT

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Also Published As

Publication number Publication date
EP2846412B1 (en) 2018-12-19
JP2015050193A (en) 2015-03-16
FR3010241B1 (en) 2017-01-06
FR3010241A1 (en) 2015-03-06
JP6420100B2 (en) 2018-11-07
US9397428B2 (en) 2016-07-19
US20150064986A1 (en) 2015-03-05

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