EP0955699A1 - Electrical connection device with built-in switch - Google Patents

Electrical connection device with built-in switch Download PDF

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Publication number
EP0955699A1
EP0955699A1 EP99401058A EP99401058A EP0955699A1 EP 0955699 A1 EP0955699 A1 EP 0955699A1 EP 99401058 A EP99401058 A EP 99401058A EP 99401058 A EP99401058 A EP 99401058A EP 0955699 A1 EP0955699 A1 EP 0955699A1
Authority
EP
European Patent Office
Prior art keywords
conductor
cylindrical
plug
base
axial
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.)
Withdrawn
Application number
EP99401058A
Other languages
German (de)
French (fr)
Inventor
Jean-Pierre Huguenet
Philippe Bertrand
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.)
Amphenol Socapex SA
Original Assignee
Amphenol Socapex 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 Amphenol Socapex SA filed Critical Amphenol Socapex SA
Publication of EP0955699A1 publication Critical patent/EP0955699A1/en
Withdrawn legal-status Critical Current

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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
    • H01R13/7031—Shorting, shunting or bussing of different terminals interrupted or effected on engagement of coupling part, e.g. for ESD protection, line continuity
    • H01R13/7032—Shorting, shunting or bussing of different terminals interrupted or effected on engagement of coupling part, e.g. for ESD protection, line continuity making use of a separate bridging element directly cooperating with the terminals
    • 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
    • H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
    • H01R24/42—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency comprising impedance matching means or electrical components, e.g. filters or switches
    • H01R24/46—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency comprising impedance matching means or electrical components, e.g. filters or switches comprising switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2103/00—Two poles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/02—Connectors or connections adapted for particular applications for antennas
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S439/00—Electrical connectors
    • Y10S439/916—Antenna

Definitions

  • the present invention relates to an electrical connection device with a switch.
  • the invention relates to an electrical connection device which also makes it possible to provide an electrical switching function and which can be used in particular but not exclusively to ensure the possible connection between a portable antenna device, for example a radiotelephone and an element connection for example mounted in a motor vehicle and connected to the antenna of this motor vehicle.
  • a portable antenna device for example a radiotelephone
  • an element connection for example mounted in a motor vehicle and connected to the antenna of this motor vehicle.
  • radiotelephones which are of course equipped with a clean antenna and which for their operation are powered by a battery or a battery.
  • the radiotelephone is equipped with a connection element comprising a base and the motor vehicle is equipped with a connection element comprising a plug which is connected to the antenna of the motor vehicle. It is understood that when the radiotelephone is used independently it is necessary that the clean antenna of the radiotelephone is connected to the radiotelephone processing circuit and that when the radiotelephone is connected to the antenna of the motor vehicle it is necessary that the connection with the radiotelephone's own antenna is interrupted and a connection is established between the processing circuits internal to the radiotelephone and the antenna of the motor vehicle.
  • a switching connection device could be used in other contexts than that which has been described previously insofar as it is a question of making either a connection between a coaxial cable and the circuits of a portable device is a connection between these same processing circuits of the portable device and an antenna specific to this device.
  • An object of the present invention is to provide an electrical connection device with a switch constituted by a base and a plug which effectively allows switching from an internal link to a device to which the base is connected to an external link when the base of the device is connected to an external plug.
  • the position of the switching member is such that the axial conductor is connected to the first cylindrical conductor of the plug which ensures the link between the antenna conductor of the portable device and the processing circuits of this same device in the case where the connection device is used with an antenna device.
  • the switching member is moved aside and the device linked to the plug, in particular the antenna of a motor vehicle, is connected to the circuit of the portable device while the shield of the antenna is connected to the ground of the portable device.
  • the device is characterized in that the first end of the switching member is integral with the first cylindrical conductor and its second end at rest is in contact with said axial conductor and in that said mechanical insulating means comprise an insulating sleeve surrounding said first hollow axial conductor.
  • the free end of the second cylindrical conductor of the plug is shaped, when the plug is engaged in the base, to come into electrical contact with said first and second cylindrical conductors of the base simultaneously.
  • FIG 1 there is shown very schematically a motor vehicle 10 equipped with a clean antenna A2 connected to a fixed plug 14 by an antenna conductor 16.
  • a radiotelephone 18 which is equipped with its own antenna A1.
  • a base 20 intended to be connected to the plug 14 of the motor vehicle when the radiotelephone 18 is to be used in the latter.
  • the printed circuit 22 of the portable device for example the radiotelephone 18 as shown in Figure 1.
  • This printed circuit 22 has on its upper face 22a a number of metallization and conductive tracks and in particular a first track 24 which is connected to the ground M of the portable device a second track 26 which is electrically connected to the own antenna of the portable device A1 and a metallized hole 28 connected to a conductive track 30 produced on the lower face 22b of the printed circuit .
  • the conductive track 30 is electrically connected to the processing circuits of the portable device, for example of the radiotelephone, to allow the transmission and reception functions of the radiotelephone.
  • the actual base 20 is constituted by an axial conductor 32 which has a cylindrical external portion 34 a cylindrical lower portion 36 which is engaged in the metallized hole 26, and a central portion 38 having an external diameter greater than the rest of the axial conductor 32
  • a first cylindrical conductor 40 coaxial with the axial conductor 32.
  • an insulating ring 42 connects the first cylindrical conductor 40 to the axial conductor 32.
  • the first cylindrical conductor 40 is electrically connected to the conductive track 26 which is itself connected to the antenna A1.
  • the base 20 also includes a second cylindrical conductor 44 which is substantially coaxial with the axial conductor 32 and which surrounds the first cylindrical conductor 40. Mechanically the second cylindrical conductor 44 is connected to the first cylindrical conductor 40 by means of a second ring insulating 46.
  • the external cylindrical conductor 44 is electrically connected to the conductive track 24, that is to say to the mass M of the portable device, for example of the radiotelephone.
  • the first cylindrical connection conductor 40 is equipped with a switching member 50 which comprises a first cylindrical portion 52 secured to the internal face of the cylindrical conductor 40 so as to ensure electrical continuity between these two parts .
  • the switching element 50 also comprises an elastically deformable part of generally frustoconical shape and provided with slots to allow its elastic deformation as will be explained later.
  • the frustoconical portion 54 of the switching member 50 is in contact with the portion 38 of increased diameter of the axial conductor 32. It is understood that in this position an electrical connection is thus made between the first cylindrical conductor 40 and the conductor axial 32.
  • an electrical connection is thus made between the conductive track 26 and the conductive track 30, that is to say a connection between the antenna A1 of the radiotelephone and its processing circuits.
  • the electrical conduction between the cylindrical conductor 40 and the axial conductor 32 is of very good quality.
  • the printed circuit 22 is of the double-sided type. We would not depart from the invention if we used a single-sided printed circuit in which all the metallizations would be made on the upper face 22a. This would require carrying out additional metallization for the axial conductor 32 but would make it possible to avoid the metallized hole 28.
  • This plug comprises an insulating body 60 provided with an axial recess 62 to receive the antenna conductor and its female contact 64.
  • the insulating body 60 ends in an insulating sleeve 66 which surrounds the contact 64.
  • the plug 14 also includes a external connection element 68 which is electrically connected by 69 to the shielding of the antenna A2.
  • the external connection element 68 of the plug 14 is made with two concentric ferrules and made of conductive material respectively referenced 70 and 72. A gap 74 is left between the conductive ferrules 70 and 72.
  • the ferrules 70 and 72 have free edges 70a and 72a of increased width and, preferably, a conductive ring 74 is interposed between the free edges 70a and 72a of the two ferrules constituting the external conductor 68 of the plug. This produces a cylindrical external conductor 68 whose end has certain deformability properties.
  • the insulating sleeve 66 acts on the elastically deformable part 54 of the switching member 50, thus spreading its free edge 54a from the portion 38 of the axial conductor 32. This thus interrupts the electrical connection between the axial conductor 32 and the first cylindrical conductor 40. Simultaneously an electrical contact is established between the central conductor 64 of the plug and the axial conductor 32.
  • the free edges 70a and 72a of the ferrules constituting the external conductor of the plug 14 come into contact respectively with the internal face 40a of the cylindrical conductor 44 and the external face 40b of the cylindrical conductor 40.
  • This double electrical contact makes an electrical connection between the conductive track 26 and the conductive track 24. This gives the grounding of the antenna A1 of the portable device which is equipped with the base 20.
  • FIG. 4 shows an alternative embodiment of the base which bears the reference 20 '.
  • the base 20 ' is constituted by a connection part 80 which is forcibly engaged in a support part 82.
  • connection part 80 has the same structure as in FIG. 2 with the exception of the lower parts 32a of the axial conductor 32, 40c of the first cylindrical conductor 40 and 44c of the second cylindrical conductor 44. More precisely, the lower ends 32a and 40c make protruding below the insulating rings 42 and 46 and the lower end 44c has a reduced thickness to form a shoulder 84.
  • the support part 82 comprises an axial conductor 86, a first cylindrical conductor 88 secured to the axial conductor by a first insulating ring 90 and a second cylindrical conductor 92 secured to the first cylindrical conductor 88 by a second insulating ring 94.
  • the second cylindrical conductor 92 makes protrusion above the insulating ring 94 and it has a shoulder 96 corresponding to the shoulder 84 of the connection part 80, to achieve a tight fitting.
  • the conductive elements 86, 88 and 92 are made of an electrically conductive elastomer and the insulating rings 90 and 94 are also made of elastomer.
  • the printed circuit is single sided.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Transceivers (AREA)
  • Support Of Aerials (AREA)
  • Telephone Set Structure (AREA)
  • Details Of Aerials (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

When a mobile telephone aerial connection is made, contact is made with the coaxial wall, and the inner flexing wall section connection released.

Description

La présente invention a pour objet un dispositif de connexion électrique à commutateur.The present invention relates to an electrical connection device with a switch.

De façon plus précise l'invention concerne un dispositif de connexion électrique qui permet également d'assurer une fonction de commutation électrique et qui est utilisable notamment mais non exclusivement pour assurer la connexion possible entre un dispositif portatif à antenne par exemple un radiotéléphone et un élément de connexion par exemple monté dans un véhicule automobile et relié à l'antenne de ce véhicule automobile.More specifically, the invention relates to an electrical connection device which also makes it possible to provide an electrical switching function and which can be used in particular but not exclusively to ensure the possible connection between a portable antenna device, for example a radiotelephone and an element connection for example mounted in a motor vehicle and connected to the antenna of this motor vehicle.

On connaît bien sûr le développement très important des radiotéléphones qui sont bien sûr équipés d'une antenne propre et qui pour leur fonctionnement sont alimentés par une pile ou une batterie.We know of course the very important development of radiotelephones which are of course equipped with a clean antenna and which for their operation are powered by a battery or a battery.

Dans le cas où l'utilisateur du radiotéléphone est dans son véhicule automobile il est bien sûr intéressant de connecter son radiotéléphone au circuit du véhicule automobile et principalement à une antenne du véhicule automobile afin d'assurer les meilleures qualités possibles de transmission entre le radiotéléphone et l'extérieur.In the case where the user of the radiotelephone is in his motor vehicle, it is of course advantageous to connect his radiotelephone to the circuit of the motor vehicle and mainly to an antenna of the motor vehicle in order to ensure the best possible qualities of transmission between the radiotelephone and outside.

Pour ce faire, le radiotéléphone est équipé d'un élément de connexion comprenant une embase et le véhicule automobile est équipé d'un élément de connexion comprenant une fiche qui est reliée à l'antenne du véhicule automobile. On comprend que lorsque le radiotéléphone est utilisé de façon autonome il est nécessaire que l'antenne propre du radiotéléphone soit reliée au circuit de traitement du radiotéléphone et que lorsque le radiotéléphone est connecté à l'antenne du véhicule automobile il est nécessaire que la liaison avec l'antenne propre du radiotéléphone soit interrompue et qu'une liaison soit établie entre les circuits de traitement internes au radiotéléphone et l'antenne du véhicule automobile.To do this, the radiotelephone is equipped with a connection element comprising a base and the motor vehicle is equipped with a connection element comprising a plug which is connected to the antenna of the motor vehicle. It is understood that when the radiotelephone is used independently it is necessary that the clean antenna of the radiotelephone is connected to the radiotelephone processing circuit and that when the radiotelephone is connected to the antenna of the motor vehicle it is necessary that the connection with the radiotelephone's own antenna is interrupted and a connection is established between the processing circuits internal to the radiotelephone and the antenna of the motor vehicle.

Il est également souhaitable pour obtenir un fonctionnement optimisé du radiotéléphone branché sur l'antenne du véhicule automobile que l'antenne propre du radiotéléphone soit reliée à la masse du radiotéléphone.It is also desirable to obtain an optimized operation of the radiotelephone connected to the antenna of the motor vehicle that the clean antenna of the radiotelephone is connected to the ground of the radiotelephone.

Il va cependant de soi qu'un dispositif de connexion à commutation pourrait être utilisé dans d'autres contextes que celui qui a été décrit précédemment dans la mesure où il s'agit de réaliser soit une connexion entre un câble coaxial et les circuits d'un appareil portatif soit une connexion entre ces mêmes circuits de traitement de l'appareil portatif et une antenne propre à cet appareil.It goes without saying, however, that a switching connection device could be used in other contexts than that which has been described previously insofar as it is a question of making either a connection between a coaxial cable and the circuits of a portable device is a connection between these same processing circuits of the portable device and an antenna specific to this device.

Un objet de la présente invention est de fournir un dispositif de connexion électrique à commutateur constitué par une embase et une fiche qui permet effectivement de passer d'une liaison interne à un appareil auquel est connectée l'embase à une liaison externe lorsque l'embase de l'appareil est relié à une fiche externe.An object of the present invention is to provide an electrical connection device with a switch constituted by a base and a plug which effectively allows switching from an internal link to a device to which the base is connected to an external link when the base of the device is connected to an external plug.

Pour atteindre ce but, selon l'invention, le dispositif de connexion à commutateur comprenant une embase notamment destinée à être montée sur un appareil portatif équipé d'une première antenne et une fiche notamment destinée à être reliée à une deuxième antenne, ladite embase étant apte à être connectée à ladite fiche se caractérise en ce que ladite embase comprend un conducteur axial notamment destiné à être relié à un circuit dudit appareil portable,

  • un premier conducteur cylindrique sensiblement coaxial audit conducteur axial isolé dudit conducteur axial et notamment destiné à être relié à ladite première antenne ;
  • un deuxième conducteur cylindrique notamment ledit premier conducteur cylindrique et isolé de celui-ci, ledit deuxième conducteur cylindrique étant destiné à être relié à la masse dudit appareil portatif;
  • et un organe de commutation électrique élastique présentant une symétrie de révolution autour de l'axe commun aux conducteurs cylindriques dont une première extrémité est solidaire du premier conducteur cylindrique et dont la deuxième extrémité, au repos, est en contact avec ledit conducteur axial et en ce que ladite fiche comprend un premier conducteur axial creux apte à coopérer avec le conducteur axial de l'embase et étant entouré par un manchon isolant et ledit conducteur creux étant relié à ladite deuxième antenne, et
  • un deuxième conducteur cylindrique sensiblement coaxial audit conducteur creux et entourant celui-ci, relié au blindage de ladite deuxième antenne par quoi, lorsque ladite fiche est engagée dans ladite embase, le conducteur creux de la fiche entre en contact élastique avec le conducteur axial de l'embase et le manchon isolant écarte la deuxième extrémité de l'organe de commutation, et ledit deuxième conducteur cylindrique de la fiche entre en contact électrique avec au moins ledit deuxième conducteur cylindrique de l'embase.
To achieve this object, according to the invention, the switch connection device comprising a base in particular intended to be mounted on a portable device equipped with a first antenna and a plug in particular intended to be connected to a second antenna, said base being able to be connected to said plug is characterized in that said base comprises an axial conductor in particular intended to be connected to a circuit of said portable device,
  • a first cylindrical conductor substantially coaxial with said axial conductor isolated from said axial conductor and in particular intended to be connected to said first antenna;
  • a second cylindrical conductor, in particular said first cylindrical conductor and isolated therefrom, said second cylindrical conductor being intended to be connected to the ground of said portable appliance;
  • and an elastic electrical switching member having a symmetry of revolution about the axis common to the cylindrical conductors, a first end of which is integral with the first cylindrical conductor and the second end of which, at rest, is in contact with said axial conductor and in that that said plug comprises a first hollow axial conductor capable of cooperating with the axial conductor of the base and being surrounded by an insulating sleeve and said hollow conductor being connected to said second antenna, and
  • a second cylindrical conductor substantially coaxial with said hollow conductor and surrounding it, connected to the shielding of said second antenna by which, when said plug is engaged in said socket, the hollow conductor of the plug comes into elastic contact with the axial conductor of the base and the insulating sleeve separates the second end of the switching member, and said second cylindrical conductor of the plug comes into electrical contact with at least said second cylindrical conductor of the base.

On comprend que grâce aux dispositions de l'invention, lorsque l'embase n'est pas connectée à la fiche, la position de l'organe de commutation est telle que le conducteur axial est relié au premier conducteur cylindrique de la fiche ce qui assure la liaison entre le conducteur d'antenne du dispositif portatif et les circuits de traitement de ce même dispositif dans le cas où le dispositif de connexion est utilisé avec un appareil à antenne. En revanche lorsque la fiche est engagée dans l'embase, l'organe de commutation est écarté et le dispositif lié à la fiche, notamment l'antenne d'un véhicule automobile, est relié au circuit de l'appareil portatif alors que le blindage de l'antenne est relié à la masse de l'appareil portatif.We understand that thanks to the provisions of the invention, when the base is not connected to the plug, the position of the switching member is such that the axial conductor is connected to the first cylindrical conductor of the plug which ensures the link between the antenna conductor of the portable device and the processing circuits of this same device in the case where the connection device is used with an antenna device. On the other hand, when the plug is engaged in the socket, the switching member is moved aside and the device linked to the plug, in particular the antenna of a motor vehicle, is connected to the circuit of the portable device while the shield of the antenna is connected to the ground of the portable device.

De plus, grâce à la forme de révolution de l'élément de commutation, on obtient une très bonne conduction électrique lorsque l'élément de commutation est au repos.In addition, thanks to the shape of revolution of the switching element, very good electrical conduction is obtained when the switching element is at rest.

De préférence le dispositif se caractérise en ce que la première extrémité de l'organe de commutation est solidaire du premier conducteur cylindrique et sa deuxième extrémité au repos est en contact avec ledit conducteur axial et en ce que lesdits moyens mécaniques isolants comprennent un manchon isolant entourant ledit premier conducteur axial creux.Preferably, the device is characterized in that the first end of the switching member is integral with the first cylindrical conductor and its second end at rest is in contact with said axial conductor and in that said mechanical insulating means comprise an insulating sleeve surrounding said first hollow axial conductor.

Selon un mode préféré de mise en oeuvre, l'extrémité libre du deuxième conducteur cylindrique de la fiche est conformée, lorsque la fiche est engagée dans l'embase, pour entrer en contact électrique avec simultanément lesdits premier et deuxième conducteurs cylindriques de l'embase.According to a preferred embodiment, the free end of the second cylindrical conductor of the plug is shaped, when the plug is engaged in the base, to come into electrical contact with said first and second cylindrical conductors of the base simultaneously. .

On comprend que grâce à ce mode perfectionné de réalisation du dispositif de connexion à commutateur on a réalisé une liaison entre le premier conducteur cylindrique relié à la masse du dispositif portatif et le deuxième conducteur cylindrique qui est lui relié au blindage de l'antenne externe.It is understood that thanks to this improved embodiment of the switch connection device, a connection has been made between the first cylindrical conductor connected to the ground of the portable device and the second cylindrical conductor which is itself connected to the shielding of the external antenna.

D'autres caractéristiques et avantages de l'invention appraîtront mieux à la lecture de la description qui suit d'un mode de réalisation de l'invention donné à titre d'exemple non limitatif. La description se réfère aux figures annexées sur lesquelles :

  • la figure 1 est une vue d'ensemble d'un exemple de mise en oeuvre de l'invention appliqué au cas d'un radiotéléphone et d'une antenne de véhicule automobile ;
  • la figure 2 est une vue en coupe verticale de l'embase du dispositif de connexion ;
  • la figure 3 est une vue en coupe axiale de la fiche du dispositif de connexion à commutateur ; et
  • la figure 4 montre une variante de réalisation de l'embase.
Other characteristics and advantages of the invention will become more apparent on reading the following description of an embodiment of the invention given by way of non-limiting example. The description refers to the appended figures in which:
  • Figure 1 is an overview of an exemplary implementation of the invention applied to the case of a radiotelephone and a motor vehicle antenna;
  • Figure 2 is a vertical sectional view of the base of the connection device;
  • Figure 3 is an axial sectional view of the plug of the switch connection device; and
  • Figure 4 shows an alternative embodiment of the base.

Sur la figure 1 on a représenté très schématiquement un véhicule automobile 10 équipé d'une antenne propre A2 reliée à une fiche fixe 14 par un conducteur d'antenne 16. Sur cette même figure, on a représenté schématiquement un radiotéléphone 18 qui est équipé de son antenne propre A1. Sur cette figure, on a également fait apparaître schématiquement une embase 20 destinée à être connectée à la fiche 14 du véhicule automobile lorsque le radiotéléphone 18 doit être utilisé dans celui-ci.In Figure 1 there is shown very schematically a motor vehicle 10 equipped with a clean antenna A2 connected to a fixed plug 14 by an antenna conductor 16. In the same figure, there is schematically shown a radiotelephone 18 which is equipped with its own antenna A1. In this figure, there has also been shown diagrammatically a base 20 intended to be connected to the plug 14 of the motor vehicle when the radiotelephone 18 is to be used in the latter.

En se référant tout d'abord à la figure 2, on va décrire un premier mode préféré de réalisation de l'embase du dispositif de connexion à commutateur. Sur cette figure, on a représenté le circuit imprimé 22 de l'appareil portatif, par exemple le radiotéléphone 18 comme représenté sur la figure 1. Ce circuit imprimé 22 comporte sur sa face supérieure 22a un certain nombre de métallisation et pistes conductrices et notamment une première piste 24 qui est reliée à la masse M du dispositif portatif une deuxième piste 26 qui est reliée électriquement à l'antenne propre du dispositif portatif A1 et un trou métallisé 28 relié à une piste conductrice 30 réalisée sur la face inférieure 22b du circuit imprimé. La piste conductrice 30 est reliée électriquement aux circuits de traitement du dispositif portatif par exemple du radiotéléphone pour permettre les fonctions d'émission et de réception du radiotéléphone.Referring first to Figure 2, we will describe a first preferred embodiment of the base of the switch connection device. In this figure, there is shown the printed circuit 22 of the portable device, for example the radiotelephone 18 as shown in Figure 1. This printed circuit 22 has on its upper face 22a a number of metallization and conductive tracks and in particular a first track 24 which is connected to the ground M of the portable device a second track 26 which is electrically connected to the own antenna of the portable device A1 and a metallized hole 28 connected to a conductive track 30 produced on the lower face 22b of the printed circuit . The conductive track 30 is electrically connected to the processing circuits of the portable device, for example of the radiotelephone, to allow the transmission and reception functions of the radiotelephone.

L'embase proprement dite 20 est constituée par un conducteur axial 32 qui comporte une portion externe cylindrique 34 une portion inférieure cylindrique 36 qui est engagée dans le trou métallisé 26, et une partie médiane 38 présentant un diamètre externe supérieur au reste du conducteur axial 32. Autour du conducteur axial 32, on trouve un premier conducteur cylindrique 40 coaxial au conducteur axial 32. Mécaniquement, une bague isolante 42 relie le premier conducteur cylindrique 40 au conducteur axial 32. Le premier conducteur cylindrique 40 est électriquement relié à la piste conductrice 26 qui est elle-même reliée à l'antenne A1.The actual base 20 is constituted by an axial conductor 32 which has a cylindrical external portion 34 a cylindrical lower portion 36 which is engaged in the metallized hole 26, and a central portion 38 having an external diameter greater than the rest of the axial conductor 32 Around the axial conductor 32, there is a first cylindrical conductor 40 coaxial with the axial conductor 32. Mechanically, an insulating ring 42 connects the first cylindrical conductor 40 to the axial conductor 32. The first cylindrical conductor 40 is electrically connected to the conductive track 26 which is itself connected to the antenna A1.

L'embase 20 comporte également un deuxième conducteur cylindrique 44 qui est sensiblement coaxial au conducteur axial 32 et qui entoure le premier conducteur cylindrique 40. Mécaniquement le deuxième conducteur cylindrique 44 est relié au premier conducteur cylindrique 40 par l'intermédiaire d'une deuxième bague isolante 46. Dans l'exemple de réalisation considéré, le conducteur cylindrique externe 44 est relié électriquement à la piste conductrice 24 c'est-à-dire à la masse M de l'appareil portatif par exemple du radiotéléphone.The base 20 also includes a second cylindrical conductor 44 which is substantially coaxial with the axial conductor 32 and which surrounds the first cylindrical conductor 40. Mechanically the second cylindrical conductor 44 is connected to the first cylindrical conductor 40 by means of a second ring insulating 46. In the embodiment considered, the external cylindrical conductor 44 is electrically connected to the conductive track 24, that is to say to the mass M of the portable device, for example of the radiotelephone.

Comme le montre la figure 2, le premier conducteur cylindrique de connexion 40 est équipé d'un organe de commutation 50 qui comporte une première portion cylindrique 52 solidaire de la face interne du conducteur cylindrique 40 de manière à assurer une continuité électrique entre ces deux pièces. L'élément de commutation 50 comporte également une partie élastiquement déformable de forme générale tronconique et munie de fentes pour permettre sa déformation élastique comme on l'expliquera ultérieurement. Au repos, la portion tronconique 54 de l'organe de commutation 50 est en contact avec la portion 38 de diamètre accru du conducteur axial 32. On comprend que dans cette position on réalise ainsi une liaison électrique entre le premier conducteur cylindrique 40 et le conducteur axial 32. En d'autres termes, dans l'exemple de réalisation considéré on réalise ainsi une connexion électrique entre la piste conductrice 26 et la piste conductrice 30 c'est-à-dire une liaison entre l'antenne A1 du radiotéléphone et ses circuits de traitement.As shown in FIG. 2, the first cylindrical connection conductor 40 is equipped with a switching member 50 which comprises a first cylindrical portion 52 secured to the internal face of the cylindrical conductor 40 so as to ensure electrical continuity between these two parts . The switching element 50 also comprises an elastically deformable part of generally frustoconical shape and provided with slots to allow its elastic deformation as will be explained later. At rest, the frustoconical portion 54 of the switching member 50 is in contact with the portion 38 of increased diameter of the axial conductor 32. It is understood that in this position an electrical connection is thus made between the first cylindrical conductor 40 and the conductor axial 32. In other words, in the embodiment considered, an electrical connection is thus made between the conductive track 26 and the conductive track 30, that is to say a connection between the antenna A1 of the radiotelephone and its processing circuits.

De plus, grâce à la forme de révolution de l'organe de commutation 50, la conduction électrique entre le conducteur cylindrique 40 et le conducteur axial 32 est de très bonne qualité.In addition, thanks to the shape of revolution of the switching member 50, the electrical conduction between the cylindrical conductor 40 and the axial conductor 32 is of very good quality.

Dans le mode de réalisation décrit précédemment, le circuit imprimé 22 est du type double face. On ne sortirait pas de l'invention si on utilisait un circuit imprimé simple face dans lequel toutes les métallisations seraient réalisées sur la face supérieure 22a. Cela imposerait de réaliser une métallisation supplémentaire pour le conducteur axial 32 mais permettrait d'éviter le trou métallisé 28.In the embodiment described above, the printed circuit 22 is of the double-sided type. We would not depart from the invention if we used a single-sided printed circuit in which all the metallizations would be made on the upper face 22a. This would require carrying out additional metallization for the axial conductor 32 but would make it possible to avoid the metallized hole 28.

En se référant maintenant à la figure 3, on va décrire un mode préféré de réalisation de la fiche fixe du dispositif de connexion à commutateur.Referring now to Figure 3, we will describe a preferred embodiment of the fixed plug of the switch connection device.

Cette fiche comporte un corps isolant 60 muni d'un évidement axial 62 pour recevoir le conducteur d'antenne et son contact femelle 64. Le corps isolant 60 se termine par un manchon isolant 66 qui entoure le contact 64. La fiche 14 comporte également un élément externe de connexion 68 qui est relié électriquement par 69 au blindage de l'antenne A2. Selon un mode préféré de réalisation l'élément de connexion externe 68 de la fiche 14 est réalisé avec deux viroles concentriques et réalisés en matériau conducteur respectivement référencées 70 et 72. Un interstice 74 étant laissé entre le viroles conductrices 70 et 72. Les viroles 70 et 72 comportent des bords libres 70a et 72a de largeur accrue et, de préférence, une bague conductrice 74 est interposée entre les bords libres 70a et 72a des deux viroles constituant le conducteur externe 68 de la fiche. On réalise ainsi un conducteur externe cylindrique 68 dont l'extrémité présente certaines propriétés de déformabilité.This plug comprises an insulating body 60 provided with an axial recess 62 to receive the antenna conductor and its female contact 64. The insulating body 60 ends in an insulating sleeve 66 which surrounds the contact 64. The plug 14 also includes a external connection element 68 which is electrically connected by 69 to the shielding of the antenna A2. According to a preferred embodiment, the external connection element 68 of the plug 14 is made with two concentric ferrules and made of conductive material respectively referenced 70 and 72. A gap 74 is left between the conductive ferrules 70 and 72. The ferrules 70 and 72 have free edges 70a and 72a of increased width and, preferably, a conductive ring 74 is interposed between the free edges 70a and 72a of the two ferrules constituting the external conductor 68 of the plug. This produces a cylindrical external conductor 68 whose end has certain deformability properties.

On comprend que lorsque l'on veut connecter l'appareil portatif équipé de l'embase 20 sur l'antenne externe A2 reliée à la fiche 14 on engage l'embase 20 sur la fiche 14 de telle manière que le manchon isolant 66 de la fiche pénètre dans l'espace annulaire 80 disposé entre le conducteur axial 32 et le premier conductrice cylindrique 40 et que le bord libre 70a, 72a du conducteur externe 68 pénètre dans l'espace annulaire 82 s'étendant entre les conducteurs cylindriques 40 et 44.We understand that when we want to connect the portable device equipped with the base 20 on the external antenna A2 connected to the plug 14 we engage the base 20 on the plug 14 so that the insulating sleeve 66 of the plug enters the annular space 80 disposed between the axial conductor 32 and the first conductor cylindrical 40 and the free edge 70a, 72a of the external conductor 68 penetrates into the annular space 82 extending between the cylindrical conductors 40 and 44.

Lors de l'enfoncement de la fiche 14 dans l'embase 20 le manchon isolant 66 agit sur la partie élastiquement déformable 54 de l'organe de commutation 50 écartant ainsi son bord libre 54a de la portion 38 du conducteur axial 32. On interrompt ainsi la liaison électrique entre le conducteur axial 32 et le premier conducteur cylindrique 40. Simultanément un contact électrique est établi entre le conducteur central 64 de la fiche et le conducteur axial 32. De plus, lors de l'introduction de la fiche 32 dans l'embase 20 les bords libres 70a et 72a des viroles constituant le conducteur externe de la fiche 14 viennent en contact respectivement avec la face interne 40a du conducteur cylindrique 44 et la face externe 40b du conducteur cylindrique 40. Ce double contact électrique réalise une liaison électrique entre la piste conductrice 26 et la piste conductrice 24. On obtient ainsi la mise à la masse de l'antenne A1 du dispositif portatif qui est équipé de l'embase 20.When the plug 14 is inserted into the base 20, the insulating sleeve 66 acts on the elastically deformable part 54 of the switching member 50, thus spreading its free edge 54a from the portion 38 of the axial conductor 32. This thus interrupts the electrical connection between the axial conductor 32 and the first cylindrical conductor 40. Simultaneously an electrical contact is established between the central conductor 64 of the plug and the axial conductor 32. In addition, during the introduction of the plug 32 into the base 20 the free edges 70a and 72a of the ferrules constituting the external conductor of the plug 14 come into contact respectively with the internal face 40a of the cylindrical conductor 44 and the external face 40b of the cylindrical conductor 40. This double electrical contact makes an electrical connection between the conductive track 26 and the conductive track 24. This gives the grounding of the antenna A1 of the portable device which is equipped with the base 20.

La figure 4 montre une variante de réalisation de l'embase qui porte la référence 20'. L'embase 20' est constituée par une partie de connexion 80 qui est engagée à force dans une partie support 82.Figure 4 shows an alternative embodiment of the base which bears the reference 20 '. The base 20 'is constituted by a connection part 80 which is forcibly engaged in a support part 82.

La partie de connexion 80 présente la même structure que sur la figure 2 à l'exception des parties inférieures 32a du conducteur axial 32, 40c du premier conducteur cylindrique 40 et 44c du deuxième conducteur cylindrique 44. Plus précisément les extrémités inférieures 32a et 40c font saillie en dessous des bagues isolantes 42 et 46 et l'extrémité inférieure 44c présente une épaisseur réduite pour former un épaulement 84.The connection part 80 has the same structure as in FIG. 2 with the exception of the lower parts 32a of the axial conductor 32, 40c of the first cylindrical conductor 40 and 44c of the second cylindrical conductor 44. More precisely, the lower ends 32a and 40c make protruding below the insulating rings 42 and 46 and the lower end 44c has a reduced thickness to form a shoulder 84.

La partie support 82 comprend un conducteur axial 86, un premier conducteur cylindrique 88 solidaire du conducteur axial par une première bague isolante 90 et un deuxième conducteur cylindrique 92 solidaire du premier conducteur cylindrique 88 par une deuxième bague isolante 94. Le deuxième conducteur cylindrique 92 fait saillie au-dessus de la bague isolante 94 et il comporte un épaulement 96 correspondant à l'épaulement 84 de la partie de connexion 80, pour réaliser un emmanchement serré. Lorsque la partie de connexion 80 est engagée dans la partie support 82, on réalise une connexion électrique entre les conducteurs axiaux 32 et 86, entre les premiers conducteurs cylindriques 40 et 88 et entre les deuxièmes conducteurs cylindriques 44 et 92.The support part 82 comprises an axial conductor 86, a first cylindrical conductor 88 secured to the axial conductor by a first insulating ring 90 and a second cylindrical conductor 92 secured to the first cylindrical conductor 88 by a second insulating ring 94. The second cylindrical conductor 92 makes protrusion above the insulating ring 94 and it has a shoulder 96 corresponding to the shoulder 84 of the connection part 80, to achieve a tight fitting. When the connection part 80 is engaged in the support part 82, an electrical connection is made between the axial conductors 32 and 86, between the first cylindrical conductors 40 and 88 and between the second cylindrical conductors 44 and 92.

De préférence, les éléments conducteurs 86, 88 et 92 sont réalisés en un élastomère conducteur de l'électricité et les bagues isolantes 90 et 94 sont également réalisées en élastomère. Ainsi, il existe une possibilité de déplacement axial de cet ensemble lors de l'enfoncement de la fiche, ce qui permet de protéger le circuit imprimé proprement dit. Dans ce cas; le circuit imprimé est simple face.Preferably, the conductive elements 86, 88 and 92 are made of an electrically conductive elastomer and the insulating rings 90 and 94 are also made of elastomer. Thus, there is a possibility of axial displacement of this assembly when the plug is inserted, which makes it possible to protect the printed circuit itself. In that case; the printed circuit is single sided.

Claims (6)

Dispositif de connexion à commutateur comprenant une embase (20) notamment destinée à être montée sur un appareil portatif équipé d'une première antenne (A1) et une fiche notamment destinée à être reliée à une deuxième antenne ladite embase (14) étant apte à être connectée à ladite fiche, caractérisé en ce que ladite embase (20) comprend : - un conducteur axial (32) notamment destiné à être relié à un circuit dudit appareil portable, - un premier conducteur cylindrique (40) sensiblement coaxial audit conducteur axial (32) isolé dudit conducteur axial et notamment destiné à être relié à ladite première antenne ; - un deuxième conducteur cylindrique (44) entourant ledit premier conducteur cylindrique (40) et isolé de celui-ci, ledit deuxième conducteur cylindrique étant notamment destiné à être relié à la masse dudit appareil portatif ; - et un organe de commutation électrique élastique (50) présentant une symétrie de révolution autour de l'axe commun aux conducteurs cylindriques dont une première extrémité (52) est solidaire d'un des deux éléments constitués par le premier conducteur cylindrique (40) et le conducteur axial et dont la deuxième extrémité (54) au repos est en contact avec l'autre desdits deux éléments (32)    et en ce que ladite fiche (14) comprend : - un premier conducteur axial (64) creux apte à coopérer avec le conducteur axial de l'embase, ledit conducteur creux étant notamment destiné à être relié à ladite deuxième antenne, - un deuxième conducteur cylindrique (68) sensiblement coaxial audit conducteur creux et entourant celui-ci, notamment destiné à être relié au blindage de ladite deuxième antenne ; et - des moyens isolants mécaniques pour écarter la deuxième extrémité de l'organe de commutation de sa position de repos lorsque ladite fiche est engagée dans ladite embase, par quoi, lorsque ladite fiche est engagée dans ladite embase, le conducteur creux de la fiche entre en contact élastique avec le conducteur axial de l'embase et le manchon isolant écarte la deuxième extrémité de l'organe de commutation, et ledit deuxième conducteur cylindrique de la fiche entre en contact électrique avec au moins ledit deuxième conducteur cylindrique de l'embase. Switch connection device comprising a base (20) in particular intended to be mounted on a portable device equipped with a first antenna (A1) and a plug in particular intended to be connected to a second antenna, said base (14) being able to be connected to said plug, characterized in that said base (20) comprises: - an axial conductor (32) in particular intended to be connected to a circuit of said portable device, - A first cylindrical conductor (40) substantially coaxial with said axial conductor (32) isolated from said axial conductor and in particular intended to be connected to said first antenna; - A second cylindrical conductor (44) surrounding said first cylindrical conductor (40) and isolated therefrom, said second cylindrical conductor being in particular intended to be connected to the ground of said portable device; - And an elastic electrical switching member (50) having a symmetry of revolution around the axis common to the cylindrical conductors, a first end (52) of which is integral with one of the two elements constituted by the first cylindrical conductor (40) and the axial conductor and whose second end (54) at rest is in contact with the other of said two elements (32) and in that said sheet (14) comprises: a first hollow axial conductor (64) capable of cooperating with the axial conductor of the base, said hollow conductor being in particular intended to be connected to said second antenna, - A second cylindrical conductor (68) substantially coaxial with said hollow conductor and surrounding it, in particular intended to be connected to the shielding of said second antenna; and - mechanical insulating means for moving the second end of the switching member from its rest position when said plug is engaged in said socket, whereby, when said plug is engaged in said socket, the hollow conductor of the plug enters elastic contact with the axial conductor of the base and the insulating sleeve separates the second end of the switching member, and said second cylindrical conductor of the plug comes into electrical contact with at least said second cylindrical conductor of the base. Dispositif selon la revendication 1, caractérisé en ce que la première extrémité (52) de l'organe de commutation est solidaire du premier conducteur cylindrique (40) et sa deuxième extrémité (54) au repos est en contact avec ledit conducteur axial (32) et en ce que lesdits moyens mécaniques isolants comprennent un manchon isolant (66) entourant ledit premier conducteur axial creux.Device according to claim 1, characterized in that the first end (52) of the switching member is integral with the first conductor cylindrical (40) and its second end (54) at rest is in contact with said axial conductor (32) and in that said mechanical insulating means comprise an insulating sleeve (66) surrounding said first hollow axial conductor. Dispositif de connexion à commutation selon la revendication 2, caractérisé en ce que l'extrémité libre dudit deuxième conducteur cylindrique (68) de la fiche est conformé, lorsque la fiche (14) est engagée dans l'embase (20), pour entrer en contact électrique avec simultanément lesdits premier (40) et deuxième (44) conducteurs cylindriques de l'embase.Switching connection device according to claim 2, characterized in that the free end of said second cylindrical conductor (68) of the plug is shaped, when the plug (14) is engaged in the base (20), to enter electrical contact with said first (40) and second (44) cylindrical conductors of the base simultaneously. Dispositif de connexion à commutation selon la revendication 3, caractérisé en ce que ledit deuxième conducteur cylindrique (68) de la fiche (14) est constitué par deux viroles cylindriques (70, 72) coaxiales séparées par une fente cylindrique, et par une bague conductrice (74) interposée entre les deux viroles à proximité de leur bord libre (70a, 72a).Switching connection device according to claim 3, characterized in that said second cylindrical conductor (68) of the plug (14) consists of two coaxial cylindrical ferrules (70, 72) separated by a cylindrical slot, and by a conductive ring (74) interposed between the two ferrules near their free edge (70a, 72a). Dispositif de connexion à commutation selon l'une quelconque des revendications 2 à 4, caractérisé en ce que ledit organe de commutation (50) comprend une première portion (52) sensiblement cylindrique solidaire de la face interne du premier conducteur cylindrique (40) de l'embase et une portion tronconique déformable (54) dont le bord libre, au repos, est en contact avec ledit conducteur axial (32) de l'embase.Switching connection device according to any one of Claims 2 to 4, characterized in that the said switching member (50) comprises a first substantially cylindrical portion (52) integral with the internal face of the first cylindrical conductor (40) of the base and a deformable frustoconical portion (54) whose free edge, at rest, is in contact with said axial conductor (32) of the base. Dispositif de connexion à commutation selon la revendication 5, caractérisé en ce que ledit conducteur axial (32) de l'embase (20 comprend une première portion cylindrique (34) apte à coopérer avec le premier conducteur creux (64) de la fiche (14) et une portion élargie (38) avec laquelle le bord libre de la portion tronconique (54) de l'organe de commutation (50), au repos, est en contact.Switching connection device according to claim 5, characterized in that said axial conductor (32) of the base (20 comprises a first cylindrical portion (34) capable of cooperating with the first hollow conductor (64) of the plug (14 ) and an enlarged portion (38) with which the free edge of the frustoconical portion (54) of the switching member (50), at rest, is in contact.
EP99401058A 1998-05-07 1999-04-30 Electrical connection device with built-in switch Withdrawn EP0955699A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9805793A FR2778503B1 (en) 1998-05-07 1998-05-07 ELECTRICAL SWITCHING DEVICE
FR9805793 1998-05-07

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US6152750A (en) 2000-11-28
FR2778503A1 (en) 1999-11-12
FR2778503B1 (en) 2000-07-28

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