FR2545993A1 - Axial-compression spring electrical contacts - Google Patents

Axial-compression spring electrical contacts Download PDF

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Publication number
FR2545993A1
FR2545993A1 FR8307900A FR8307900A FR2545993A1 FR 2545993 A1 FR2545993 A1 FR 2545993A1 FR 8307900 A FR8307900 A FR 8307900A FR 8307900 A FR8307900 A FR 8307900A FR 2545993 A1 FR2545993 A1 FR 2545993A1
Authority
FR
France
Prior art keywords
contact
spring
head
housing
contact head
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
FR8307900A
Other languages
French (fr)
Other versions
FR2545993B3 (en
Inventor
Yves Le Magourou
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.)
Societe dExploitation des Procedes Marechal SEPM SA
Original Assignee
Societe dExploitation des Procedes Marechal SEPM 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 Societe dExploitation des Procedes Marechal SEPM SA filed Critical Societe dExploitation des Procedes Marechal SEPM SA
Priority to FR8307900A priority Critical patent/FR2545993B3/en
Publication of FR2545993A1 publication Critical patent/FR2545993A1/en
Application granted granted Critical
Publication of FR2545993B3 publication Critical patent/FR2545993B3/en
Expired 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
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
    • H01R13/2421—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means using coil springs

Abstract

The invention relates to an axial-compression spring electrical contact comprising a so-called fixed element or terminal intended to receive the supply conductor and a movable element or contact head intended to interact with an opposing contact, the two elements being connected via a conductor which can be deformed by longitudinal compression, which conductor is constituted by a metal braid and which elements are stressed one in opposition to the other by means of a helical spring, working in compression, which surrounds the metal braid and which interacts by its ends with bearing surfaces carried respectively by the terminal and by the contact head. According to the invention, the cylindrical body 10b of the contact head 10 has a diameter slightly less than the internal diameter of the helical spring 15, and it is provided with a housing 17 for a member 18 inserted laterally into the said housing and projecting sufficiently with respect to the head 10 in order to constitute the bearing surface of the corresponding end of the spring 15.

Description

L'invention concerne les contacts electriques elastiques a pression en bout. The invention relates to elastic end pressure electrical contacts.

De tels contacts sont connus. Ils comportent chacun une tete de contact qui est amenée à subir des déplacements d'une certaine amplitude et qui reçoit donc le courant par l'intermédiaire d'un conducteur déformable constitué par une tresse metallique dont l'une des extrémités est reliée à ladite tete et l'autre à la partie fixe du contact ou cosse. Le contact à pression en bout devant venir en prise élastique avec un contact antagoniste, rigide ou lui-meme élastique, un ressort hélicoïdal travaillant à la compres- sion entoure la tresse métallique et coopère par ses extrémités respectivement avec une surface d'appui de la cosse et une surface d' appui de la te te de contact. Such contacts are known. They each comprise a contact head which is made to undergo displacements of a certain amplitude and which therefore receives the current via a deformable conductor constituted by a metallic braid one of the ends of which is connected to said head and the other to the fixed part of the contact or terminal. The pressure contact at the end must come into elastic engagement with an antagonistic, rigid or itself elastic contact, a helical spring working under compression surrounds the metal braid and cooperates at its ends respectively with a bearing surface of the terminal and a contact head support surface.

Afin de reduire le plus possible la chute de tension osmique du courant traversant un tel contact, les matériaux choisis présentent une faible resistivité. Par exemple, la cosse et la tete sont en cuivre et cette dernière est munie sur sa face exterieure, pour constituer la surface de porte du contact, d'une pastille en argent rapportee par brasage. I1 faut aussi supprimer les contacts parasites cosse-tresse et tresse-tete. Pour cela la cosse et la te- te présentent respectivement à leurs extremites en regard, un evidement ou fut dans lequel est introduite l'extrémité correspondante de la tresse qui y est maintenue par tout moyen convenable, par exemple par brasage mais le plus souvent par sertissage.Enfin, touJours pour lutter contre les contacts parasites, il faut que chacun des deux écéments, tête et cosse, soit d'une seule pièce, mise à part la pastille de contact rapportee sur la tête. Or il est difficile d'exécu ter le brasage ou le sertissage des extrémités de la tresse dans les futs respectifs de la tête et de la cosse, du fait dé la présence du ressort. I1 faut procéder au sertissage, par exemple, dans le fû de la cosse, puis enfiler le ressort et le contraindre a l'écrasement tandis que l'extrémité libre de la tresse est maintenue a l'extérieur pour être engagée dans le fut de la tête et y être sertie Tout cela nécessite un appareillage spécial et prend un temps non négligeable, surtout que l'effort appliqué pour ecraser le ressort est important puisque ce dernier doit être utilisé dans sa zone moyenne et non au voisinage de sa position de repos, comme il est relit dans le brevet français 2 365872 au nom du même déposant
Afin d'abaisser le coût de revient en réduisant le temps passé pour ancrer les extremites de la tresse dans les fûts des deux éléments cosse et tête, l'invention fournit le moyen d'evi- ter la présence du ressort pendant cette opération tout en préservant la structure monobloc de ces éléments.In order to reduce the osmic voltage drop of the current passing through such a contact as much as possible, the materials chosen have a low resistivity. For example, the lug and the head are made of copper and the latter is provided on its outer face, to constitute the door surface of the contact, with a silver pad attached by brazing. It is also necessary to remove the parasitic braid and braid-head contacts. For this, the terminal and the head respectively present at their opposite ends, a recess or was into which is introduced the corresponding end of the braid which is held there by any suitable means, for example by soldering but most often by Finally, always to combat parasitic contacts, each of the two elements, head and terminal, must be in one piece, apart from the contact pad attached to the head. However, it is difficult to carry out brazing or crimping the ends of the braid in the respective drums of the head and of the terminal, due to the presence of the spring. It is necessary to proceed with crimping, for example, in the barrel of the terminal, then thread the spring and force it to crush while the free end of the braid is held outside to be engaged in the barrel of the head and be set there All this requires special equipment and takes a significant time, especially since the force applied to crush the spring is important since the latter must be used in its middle zone and not in the vicinity of its rest position, as re-read in French patent 2,365,872 in the name of the same applicant
In order to lower the cost price by reducing the time spent to anchor the ends of the braid in the barrels of the two pod and head elements, the invention provides the means of avoiding the presence of the spring during this operation while preserving the one-piece structure of these elements.

Selon l'invention, le corps cylindrique de la tête de contact a un diametre légèrement inférieur au diamètre intérieur du ressort hélicoidal et est muni d'un logement pour un organe pouvant être introduit latéralement dans ledit logement e faisant suffisamment saillie par rapport a la tête pour constituer la surface d'appui de l'extrémité correspondante du ressort hélicoidal.  According to the invention, the cylindrical body of the contact head has a diameter slightly smaller than the internal diameter of the helical spring and is provided with a housing for a member which can be inserted laterally in said housing and protruding sufficiently from the head. to form the bearing surface of the corresponding end of the helical spring.

Il est alors possible de mettre le ressort en place a la fin du montage du contact, apres ancrage de la tresse sur les deux éléments cosse et tête. Le ressort est enfilé sur l'ensemble, sans difficulte puisque la tête de contact passe librement a l'inté- rieur dudit ressort, jusqu'a ce que l'extrémité de ce dernier vienne s'appuyer sur l'épaulement de la cosse. Il suffit alors de comprimer le ressort de manière a dégager le logement, puis a mettre l'organe d'appui en place en l'introduisant latéralement et & relâcher le -res- sort. It is then possible to put the spring in place at the end of mounting the contact, after anchoring the braid on the two thimble and head elements. The spring is threaded over the assembly, without difficulty since the contact head passes freely inside said spring, until the end of the latter comes to bear on the shoulder of the terminal. It then suffices to compress the spring so as to clear the housing, then to put the support member in place by introducing it laterally and releasing the spring.

L'invention sera mieux comprise a la lecture de la description qui va suivre d'un mode de réalisation de l'invention, représenté sur le dessin annexé dans lequel:
- la figure 1 est une perspective, en vue éclatée, d'
un contact élastique selon l'invention,
- la figure 2 est une perspective du même contact après
mise en place du ressort.The invention will be better understood on reading the description which follows of an embodiment of the invention, represented in the appended drawing in which:
- Figure 1 is a perspective, in exploded view, of
an elastic contact according to the invention,
- Figure 2 is a perspective of the same contact after
spring installation.

Sur le dessin un contact élastique a pression axiale comporte, de façon connue, d'une part, une tête de contact 10 dont l'extrémité libre, munie d'une pastille de contact en argent 11, est destinée a coopérer avec un contact antagoniste, non représenté, d' autre part, une cosse 12 destinée & recevoir le conducteur d'alimen tation (nop reprdsentd) qui y est maintenu par un dispositif de serrage 13, la tête 10 et la cosse 12 etant reliées par un conducteur, déformable par écrasement longitudinal, constitué par une tresse me- tallique 14. In the drawing, an elastic contact at axial pressure comprises, in known manner, on the one hand, a contact head 10, the free end of which, provided with a silver contact pad 11, is intended to cooperate with an antagonistic contact. , not shown, on the other hand, a terminal 12 intended to receive the supply conductor (nop reprdsentd) which is held there by a clamping device 13, the head 10 and the terminal 12 being connected by a conductor, deformable by longitudinal crushing, constituted by a metallic braid 14.

Le contact après son montage sera logé dans un puits, ménagé dans le socle isolant d'un appareil, par exemple de la fiche femelle d'une connexion électrique, la cosse 12 étant immobilisée au fond dudit puits et la tête pouvant subir, dans le puits, des dd- placements longitudinaux d'une certaine amplitude et étant sollicitée vers l'orifice du puits par l'action d'un ressort hélicoïdal 15 prenant appui par l'une de ses extrémites sur un épaulement 16 de la cosse 12 et par l'autre extrémité sur une surface d'appui portée par la tête de contact. The contact after its mounting will be housed in a well, formed in the insulating base of an appliance, for example of the female plug of an electrical connection, the terminal 12 being immobilized at the bottom of said well and the head being able to undergo, in well, longitudinal displacements of a certain amplitude and being urged towards the orifice of the well by the action of a helical spring 15 bearing by one of its extremities on a shoulder 16 of the terminal 12 and by the other end on a bearing surface carried by the contact head.

La tête et la cosse sont munies sur leurs faces en regard d'un fût ou douille 10a, 12a, dans lesquels sont introduites respectivement les extrémités de la tresse 14 qui y sont ancrées par tout moyen convenable, généralement par sertissage. The head and the terminal are provided on their opposite faces with a barrel or socket 10a, 12a, into which are respectively introduced the ends of the braid 14 which are anchored therein by any suitable means, generally by crimping.

Selon l'invention le corps cylindrique lob de la tête de contact 10 a un diamètre légèrement inférieur au diamètre intérieur du ressort hélicoïdal 15 et est muni sur sa surface latérale d'une gorge périphérique 17. Cette gorge est destinée a recevoir un clips 18 introduit latéralement (suivant la flèche F2 de la figure 1) par déformation clastique. According to the invention the cylindrical body lob of the contact head 10 has a diameter slightly smaller than the internal diameter of the helical spring 15 and is provided on its lateral surface with a peripheral groove 17. This groove is intended to receive a clip 18 introduced laterally (along arrow F2 in Figure 1) by clastic deformation.

Le montage du contact-élastique apparait clairement. The mounting of the elastic contact appears clearly.

La tresse métallique 14 est ancrée par ses extrémités dans les fûts îOa et 12a , par exemple par sertissage, sans aucune difficulté puisqu'aucun organe ne gêne l'approche desdits fûts. Après l'ancrage des deux extrémités de la tresse le ressort 15 est enfilé sur l'ensemble selon la flèche F1 de la figure 1 jusqu'a venir buter contre l'dpau- lement 16 de la cosse 12, puis il est comprimé jusqu'a ce que la gorge 17 soit dégagee, le clips 18 est mis en place (flèche F2) et le ressort 15 étant relâche, son extrémité vient buter contre la face inférieure du clips 18 qui constitue sa surface d'appui.The metal braid 14 is anchored by its ends in the barrels îOa and 12a, for example by crimping, without any difficulty since no member interferes with the approach of said barrels. After the anchoring of the two ends of the braid, the spring 15 is threaded over the assembly according to the arrow F1 in FIG. 1 until it comes to abut against the spreading 16 of the terminal 12, then it is compressed until that the groove 17 is released, the clip 18 is put in place (arrow F2) and the spring 15 is released, its end abuts against the underside of the clip 18 which constitutes its bearing surface.

Il doit être entendu que le clips 18 pourrait être remw place par un équivalent technique sans que l'on sorte pour cela du cadre de l'invention. C'est ainsi que l'on peut prévoir, a la place de la gorge 17, un forage diamétral de la tête 10 et remplacer le clips 18 par une cheville ou broche traversant le forage et débordant la tête de part et d'autre, la broche étant de préférence plate et le forage de section correspondante,la retenue de la broche après montage étant assurée par la pression du ressort hélicoïdal.  It should be understood that the clip 18 could be replaced by a technical equivalent without departing from the scope of the invention. It is thus that one can provide, in place of the groove 17, a diametrical drilling of the head 10 and replace the clips 18 by a dowel or pin passing through the drilling and overflowing the head on either side, the spindle being preferably flat and the drilling of corresponding section, the retention of the spindle after mounting being ensured by the pressure of the helical spring.

Claims (3)

REVENDICATIONS 1) Contact électrique élastique a pression axiale comportant un élément dit fixe ou cosse destiné a recevoir le conducteur d'alimentation et un élément mobile ou tête de contact destiné a coopérer avec un contact antagoniste, les deux éléments étant reliés par un conducteur déformable par écrasement constitué par une tresse métallique et etant sollicites a l'opposé l'un de l'autre par un ressort hélicoïdal, travaillant a la compression, qui entoure la tresse métallique et qui coopère par ses extrémités avec des surfaces d'appui portees respectivement par la cosse et par la tête de contact, caractérisé en ce que le corps cylindrique (lob) de la têt te de contact (10) a un diamètre légèrement inférieur au. diamètre intérieur du ressort hélicoïdal (15) et qu'il est muni d'un logement (17) pour un organe (18) introduit latéralement dans ledit logement et faisant suffisamment saillie par rapport a la tête (10) pour constituer la surface d'appui de l'extrémité correspondante du ressort (15) 1) Elastic electrical contact at axial pressure comprising a so-called fixed or thimble element intended to receive the supply conductor and a mobile element or contact head intended to cooperate with an antagonistic contact, the two elements being connected by a conductor deformable by crushing consisting of a metal braid and being urged opposite one another by a helical spring, working under compression, which surrounds the metal braid and which cooperates at its ends with bearing surfaces carried respectively by the terminal and by the contact head, characterized in that the cylindrical body (lob) of the contact head (10) has a diameter slightly less than. internal diameter of the helical spring (15) and that it is provided with a housing (17) for a member (18) inserted laterally in said housing and protruding sufficiently relative to the head (10) to constitute the surface of support of the corresponding end of the spring (15) 2) Contact â pression axiale selon la revendication 1, caractérisé en ce que le logement porté par la tête de contact (10) est une gorge périphérique (17) et que l'organe constituant la surface d'appui de l'extrémité du ressort (15) est un clips (18) introduit latéralement par déformation élastique. 2) axial pressure contact according to claim 1, characterized in that the housing carried by the contact head (10) is a peripheral groove (17) and that the member constituting the bearing surface of the end of the spring (15) is a clip (18) introduced laterally by elastic deformation. 3) Contact a pression axiale selon la revendication 1, caractérisé en ce que l'organe. constituant la surface d'appui de 1' extrémité du ressort (15) est une broche, de préférence plate, et que le logement destiné a la recevoir est un forage diamètrai, de section conjuguée, de la tête de contact (10), la pression du ressort (15) assurant la retenue de la broche après montage.  3) Axial pressure contact according to claim 1, characterized in that the member. constituting the bearing surface of one end of the spring (15) is a pin, preferably flat, and that the housing intended to receive it is a diameter bore, of conjugate section, of the contact head (10), the pressure of the spring (15) ensuring the retention of the spindle after assembly.
FR8307900A 1983-05-11 1983-05-11 ELASTIC ELECTRICAL CONTACTS AT AXIAL PRESSURE Expired FR2545993B3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8307900A FR2545993B3 (en) 1983-05-11 1983-05-11 ELASTIC ELECTRICAL CONTACTS AT AXIAL PRESSURE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8307900A FR2545993B3 (en) 1983-05-11 1983-05-11 ELASTIC ELECTRICAL CONTACTS AT AXIAL PRESSURE

Publications (2)

Publication Number Publication Date
FR2545993A1 true FR2545993A1 (en) 1984-11-16
FR2545993B3 FR2545993B3 (en) 1986-08-22

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FR8307900A Expired FR2545993B3 (en) 1983-05-11 1983-05-11 ELASTIC ELECTRICAL CONTACTS AT AXIAL PRESSURE

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0417640A2 (en) * 1989-09-09 1991-03-20 Ptr Präzisionstechnik Gmbh Cathode support for election beam producing device
FR2768897A1 (en) * 1997-09-23 1999-03-26 Matra Marconi Space France Substrate interconnection mechanism
FR2798516A1 (en) * 1999-09-10 2001-03-16 Marechal Sepm Plug/socket spring electrical contact construction having moving head contact and flexible conductor wire connector connecting and outer compression spring with central section having less windings than outer.
FR2810804A1 (en) * 2000-06-22 2001-12-28 Marechal Sepm Sealed connection pressure operated flexible electrical contact having moving contact head with sealed tubular unit both ends open guidance well connected and part covering feed cable connection wire.
EP1289072A2 (en) 2001-09-04 2003-03-05 era-contact GmbH Electrical pressure contact
US6685513B2 (en) 2000-06-22 2004-02-03 Société d'Exploitation des Procédés Maréchal-(SEPM) Elastic electrical contact with axial pressure, comprising adjustable connection terminal
WO2012035030A1 (en) 2010-09-13 2012-03-22 Hachadorian Design & Calculation Gmbh Electrical contact

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0417640A3 (en) * 1989-09-09 1991-12-04 Ptr Praezisionstechnik Gmbh Cathode support for election beam producing device
EP0417640A2 (en) * 1989-09-09 1991-03-20 Ptr Präzisionstechnik Gmbh Cathode support for election beam producing device
FR2768897A1 (en) * 1997-09-23 1999-03-26 Matra Marconi Space France Substrate interconnection mechanism
FR2798516A1 (en) * 1999-09-10 2001-03-16 Marechal Sepm Plug/socket spring electrical contact construction having moving head contact and flexible conductor wire connector connecting and outer compression spring with central section having less windings than outer.
US6685513B2 (en) 2000-06-22 2004-02-03 Société d'Exploitation des Procédés Maréchal-(SEPM) Elastic electrical contact with axial pressure, comprising adjustable connection terminal
FR2810804A1 (en) * 2000-06-22 2001-12-28 Marechal Sepm Sealed connection pressure operated flexible electrical contact having moving contact head with sealed tubular unit both ends open guidance well connected and part covering feed cable connection wire.
US6479773B2 (en) 2000-06-22 2002-11-12 Societe D'exploitation Des Procedes Marechal (Sepm), Societe Anonyme Axial-compression spring electrical contact having an impervious connection
EP1289072A2 (en) 2001-09-04 2003-03-05 era-contact GmbH Electrical pressure contact
EP1289072A3 (en) * 2001-09-04 2003-12-03 era-contact GmbH Electrical pressure contact
US6773312B2 (en) 2001-09-04 2004-08-10 Era-Contact Gmbh Electrical pressure contact
WO2012035030A1 (en) 2010-09-13 2012-03-22 Hachadorian Design & Calculation Gmbh Electrical contact
DE102010037498A1 (en) 2010-09-13 2012-04-19 Hachadorian Design & Calculation Gmbh Electric contact
DE102010037498B4 (en) * 2010-09-13 2013-11-07 Hachadorian Design & Calculation Gmbh Electric contact
US9806449B2 (en) 2010-09-13 2017-10-31 Hachadorian Design & Calculation Gmbh Electrical contact

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