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EP1107378B1 - Contact member for an electrical connector - Google Patents

Contact member for an electrical connector Download PDF

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Publication number
EP1107378B1
EP1107378B1 EP99811102A EP99811102A EP1107378B1 EP 1107378 B1 EP1107378 B1 EP 1107378B1 EP 99811102 A EP99811102 A EP 99811102A EP 99811102 A EP99811102 A EP 99811102A EP 1107378 B1 EP1107378 B1 EP 1107378B1
Authority
EP
European Patent Office
Prior art keywords
contact piece
contact
piece according
tongues
clip
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.)
Expired - Lifetime
Application number
EP99811102A
Other languages
German (de)
French (fr)
Other versions
EP1107378A1 (en
Inventor
Pierre Lehmann
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.)
Preci-Dip Durtal SA
Preci Dip Durtal SA
Original Assignee
Preci-Dip Durtal SA
Preci Dip Durtal 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 Preci-Dip Durtal SA, Preci Dip Durtal SA filed Critical Preci-Dip Durtal SA
Priority to AT99811102T priority Critical patent/ATE243375T1/en
Priority to EP99811102A priority patent/EP1107378B1/en
Priority to DE69908953T priority patent/DE69908953T2/en
Priority to US09/499,638 priority patent/US6264508B1/en
Publication of EP1107378A1 publication Critical patent/EP1107378A1/en
Application granted granted Critical
Publication of EP1107378B1 publication Critical patent/EP1107378B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01R13/15—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
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H01R13/111—Resilient sockets co-operating with pins having a circular transverse section

Definitions

  • the present invention relates to a contact piece of the type female used in a connector, for example a connector MIL or any other specification, or for any other another application, as for example in a base for an integrated circuit, or intended to be placed on a printed circuit board.
  • the invention more particularly the portion of this contact piece intended to receive a corresponding element of the male type.
  • MIL standards including MIL-C 39029
  • MIL-C 39029 defines a number of characteristics that must be fulfilled by this portion of the contact piece, example the contact resistance, the insertion force and the extraction force of the male contact piece, the penetration distance of the male piece before contact is established, etc.
  • these various parameters are to measure both when the parts are new and after multiple uses and this under environmental conditions, temperature, humidity, etc. very diverse.
  • An object of the present invention is therefore to propose a piece of contact including a female portion intended to receive a corresponding male portion, of improved construction relative to known contact parts, so as to avoid the disadvantages mentioned of these contact pieces.
  • the female type portion of the piece of contact 1 intended to receive a corresponding element of the male type.
  • This male element consists of a stem, usually terminated by a hemispherical tip or truncated cone, and having a diameter determined.
  • This male element may be the male portion of a piece of corresponding contact or else an integrated circuit lug or a connecting part of an electronic component, etc.
  • the other portion of the contact piece 1, not described or shown here can be any what type known for this kind of contact piece, and can understand by a portion in which a wire can be crimped, screwed or welded, or a fixing portion on a connector or a printed circuit board or a second portion of the female type to constitute a piece of transition contact, etc.
  • the portion of the room of contact which interests us here consists of an axial drilling of a end of the contact piece followed by the realization of radial slots on a portion of the length of the tubular portion made by this piercing, to form resilient tongues. These tabs are then clamped together to form an elastic clip.
  • This construction has many disadvantages, ie a risk of permanent deformation of one or more tongues in the case insertion of a male element or introduction of a male element of too large diameter. Plus, although the contact piece consists of only one part, it is expensive because the necessary material must possess both the electrical qualities that necessary for its operation.
  • a first improvement to the contact piece above consists of covering the portion in question with a socket, as see in Figures 1A, 1B and 1C.
  • Figures 1A, 1B and 1C show the contact piece 1, consisting essentially of a metal rod, one end visible in the figure is intended to receive a male element, not visible on the figures.
  • the other end of the contact piece, not visible on the figures, is machined in a conventional way to fulfill a function any known of such a portion of contact piece.
  • the portion of the contact piece 1 that interests us here was breakthrough axially, so as to form a housing 10 in which will come to lodge the male element. Slots 11, three in the form shown here, have been machined to separate three tabs 12.
  • this construction represents the first construction described previously.
  • this portion is provided with the contact piece of a sleeve 2 of tubular form, fixed by crimping or any other means on a portion of the contact piece 1 behind the 12. This bushing 2 stops against the outer surfaces of the tongues 12, preventing too much spacing of the latter.
  • the end of the socket 2 turned towards the opening of the housing 10, comprises an end wall 20 provided with a through hole 21 coaxial with the longitudinal axis of the contact part 1, respectively of the 10.
  • the diameter of this hole 21 is determined so as not to let pass that a male element having a diameter smaller than that of a male element which would press the tongues 12 against the socket 2.
  • the hole 21 coaxial with the longitudinal axis of the housing 10 makes in addition to serving as a means of guiding the male element during its introduction.
  • Figure 2 shows a construction planned to eliminate these last defects.
  • a contact piece 1 whose the end that interests us here is provided with an axial drilling forming a housing 10 for the male element to receive.
  • a contact clip 3 is chased inside the housing 10.
  • the contact clip 3 is formed from a metal ribbon, of width corresponding to the length of the clip, which is stamped to form a lateral band with several tabs of substantially trapezoidal shape projecting from one of the sides of the sideband, the large bases of each tongue being adjacent to the sideband while the small bases are free.
  • the strip is cut into portions, each with several tabs trapezoidal the length of the portion corresponding to the perimeter inside the housing 10.
  • the tape portion is then rolled, the tongues are then tightened by their ends to deform them and to decrease the diameter inscribed between the free ends of the tongues.
  • the clip 3 thus formed is driven into the housing 10, the free ends of the tongues 30 being directed towards the bottom of the housing 10; portion 31 of clip 3, formed by the sideband described above is maintained towards the open end of the housing 10 by any known means, chase, crimping or other.
  • the clip 3 only the clip 3 must be constructed in one alloy having excellent conductive qualities as well as excellent mechanical qualities of spring effect. It follows that the rest of the room contact 1 can be machined in a cheaper metal or alloy, by example of brass.
  • the clip 3 will preferably be made from a bronze / beryllium alloy or other.
  • the tongues 30 When introducing a male element, the tongues 30 deviate to enclose said male element.
  • the spacing movement tabs 30 is also limited here by the inner wall of the housing 10, with the same disadvantages as mentioned above.
  • the end open housing 10 includes a first cylindrical scope inner 100, whose inside diameter is greater than that of the dwelling 10, followed by a second inner cylindrical bearing surface 101 whose inner diameter is between range 100 and bottom housing 10.
  • a contact clip 4 is driven by the open end of the housing 10, so that its cylindrical portion 40 comes to position on the inner cylindrical bearing surface 101.
  • the clip 4 is preferably obtained in a manner similar to that which was previously described for the clip 3. An operation complementary outward arching ends of the tabs is performed when clips are always assembled into a strip keep on going.
  • the trapezoidal slats described it is possible to also have slats of rectangular shape and separation slots Trapezoidal shape.
  • the clip 4 is fixed, by driving, crimping or any other means known on this inner bearing 101. Contrary to what has been described above concerning the clip 3, the contact tabs 41 of the clip 4 have their free ends 410 turned towards the opening of the housing 10. From the more these free ends 410, for each of the tongues 41, are formed so as to have an arcuate end portion 411, the end free movement outwards from the longitudinal axis of the dwelling 10.
  • This device is completed with an outer sleeve 5 driven away and fixed on an outer cylindrical bearing surface 102 of the contact piece 1.
  • the end of the sleeve 5 turned towards the opening of the housing 10, comprises a wall end 50 provided with a through hole 51 coaxial with the longitudinal axis of the contact part 1, respectively of the housing 10.
  • This hole 51 is determined so as to pass only one male element of diameter acceptable by the contact clip 4. It can also be seen on the figure, that if a male element has been introduced into the clip 4, its diameter being smaller than the diameter of the hole 51, the spacing movement of tabs 41 of the clip 4 is never limited by the inner diameter of the range 100, because it is greater than that of the range 101, nor by the diameter inside the bushing 5, since it is dimensioned so as to allow a maximum spacing tabs 41.
  • the piece corresponding contact point comprises a contact clip 4 whose tongues 41 undergo a deformation only elastic, over all their length and throughout their deformation range, the limitation in diameter of the male element being provided by the calibrated hole 51 of the 5.
  • This mode of operation in elastic mode ensures a electrical conductivity of the maximum contact, even in case of vibrations.
  • each of the tabs makes relative to the axis longitudinal is also of low value; this angle is typically understood between 4 ° and 10 °, being preferably between 6 ° and 8 °. Given the portion 411 arcuate ends of the tongues 41, we can not have arcboutement of the male element during its introduction or withdrawal between the tabs 41.
  • This arcuate portion is a better transmission of the mechanical forces between the male element and the clip, especially in the presence of vibrations. Indeed, he was observed a damage to the contact surface of the male element in case of vibrations when the ends of the contact tongues have a edge rather than rounding as described for this embodiment.
  • Another advantage of this device is that the distance of introducing the male element before contact is established is very weak since the male element first meets the weak portion diameter of the clip 4 formed by the tabs 41 close together.
  • hole 51 aligned with the free ends 410 of the tongues 41 form a guide in two points of the male element being introduced, preventing a crooked introduction.
  • Contact piece 1 with the exception of clip 4, will be manufactured in a low cost metal or alloy, for example brass or more particularly brass capable of supporting the crimping of a driver in the portion of the contact piece 1 opposite to that described in detail upper.
  • the clip 4 will preferably be made of an alloy of bronze and berylium.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Multi-Conductor Connections (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

The female contact piece (1) has a holder with a contact clip insert (4) for a male pin section. The contact clip has an annular crown (40) fixed in the holder with a number of flexible tongue sections (41) having a free end (410) towards the holder opening.

Description

La présente invention concerne une pièce de contact de type femelle utilisable dans un connecteur, par exemple un connecteur répondant à la norme MIL ou à toute autre spécification, ou pour toute autre application, comme par exemple dans un socle pour circuit intégré, ou destinée à être placée sur une plaque de circuit imprimé. L'invention concerne plus particulièrement la portion de cette pièce de contact destinée à recevoir un élément correspondant de type mâle.The present invention relates to a contact piece of the type female used in a connector, for example a connector MIL or any other specification, or for any other another application, as for example in a base for an integrated circuit, or intended to be placed on a printed circuit board. The invention more particularly the portion of this contact piece intended to receive a corresponding element of the male type.

Plusieurs spécifications ou normes, notamment les normes MIL, et en particulier la norme MIL-C 39029, définissent un certain nombre de caractéristiques que doit remplir cette portion de la pièce de contact, par exemple la résistance de contact, la force d'insertion et d'extraction de la pièce de contact mâle, la distance de pénétration de la pièce mâle avant que s'établisse le contact, etc. Selon les normes, ces divers paramètres sont à mesurer aussi bien lorsque les pièces sont neuves qu'après de multiples usages et ceci sous des conditions environnementales, température, humidité, etc. très diverses.Several specifications or standards, including MIL standards, and in particular MIL-C 39029, define a number of characteristics that must be fulfilled by this portion of the contact piece, example the contact resistance, the insertion force and the extraction force of the male contact piece, the penetration distance of the male piece before contact is established, etc. According to the standards, these various parameters are to measure both when the parts are new and after multiple uses and this under environmental conditions, temperature, humidity, etc. very diverse.

Afin de tenter de répondre à ces exigences, les fabricants ont proposé diverses constructions de cette portion de la pièce de contact.In an attempt to meet these requirements, manufacturers have proposed various constructions of this portion of the contact piece.

Plusieurs exécutions connues de telles portions de pièces de contact seront décrites plus bas, en regard des figures 1A et 1B ainsi que de la figure 2, ces exécutions rencontrent notamment les inconvénients suivants selon les constructions décrites: nécessité d'usiner la pièce de contact entière en un alliage métallique coûteux puisqu'il doit posséder aussi bien d'excellentes propriété de conductivité électrique que d'excellente propriété mécaniques, notamment d'effet ressort, nécessité de traitement thermique d'au moins certaines portions de la pièce afin de lui donner les caractéristiques mécaniques nécessaires, nécessité de recouvrir toute la pièce, ou une portion importante de celle-ci d'un plaquage, or ou argent, coûteux, afin de lui donner les caractéristiques électriques nécessaires, difficulté à répondre à certaines exigences des normes, notamment des normes MIL, manque de possibilité d'interchangeabilité des divers éléments de la pièce de contact, etc.Several known executions of such portions of contact will be described below, with reference to Figures 1A and 1B and these executions encounter the disadvantages according to the constructions described: need to machine the piece of whole contact in an expensive metal alloy since it must have both excellent property of electrical conductivity that excellent mechanical properties, including spring effect, need for heat treatment of at least some portions of the room to him give the necessary mechanical characteristics, need to cover the whole piece, or a substantial portion of it a plating, gold or money, expensive, in order to give it the electrical characteristics necessary, difficulty meeting certain standards requirements, in particular MIL standards, lack of possibility of interchangeability of various elements of the contact piece, etc.

La demande FR-A-2.775.389, qui est considérée comme l'état de la technique le plus proche, ainsi que le brevet US-5.419.723 décrivent tous deux une pièce de contact composée d'une douille munie d'un clip de contact fixé à l'intérieur du logement central de la douille. Pour ces deux dispositifs, le clip est fixé par sertissage de la surface interne d'une couronne sur la surface extérieure un plot de fixation disposé au fond du logement de la douille. Vu que dans ce type de construction l'extrémité avant du contact mâle peut venir en butée contre la face avant du plot de fixation, le clip doit avoir une longueur importante afin d'assurer le contact et la stabilité de la pièce de contact mâle dans le logement. Un clip long nécessite une quantité importante de matériau coûteux pour sa fabrication de même que la nécessité d'avoir une pièce de contact de longueur importante.Application FR-A-2,775,389, which is considered to be the closest state of the art, as well as US-5,419,723 both describe a contact piece composed of a socket provided with a contact clip fixed inside the central housing of the socket. For these two devices, the clip is secured by crimping the inner surface of a crown on the outer surface a fixing stud disposed at the bottom of the housing of the socket. Since in this type of construction the front end of the male contact may come into abutment against the front face of the fixing stud, the clip must have a length to ensure contact and stability of the workpiece. male contact in the housing. A long clip requires a significant amount expensive material for its manufacture as well as the need to have a contact piece of considerable length.

Un but de la présente invention est donc de proposer une pièce de contact comportant notamment une portion femelle destinée à recevoir une portion mâle correspondante, de construction améliorée relativement aux pièces de contact connues, de manière à éviter les inconvénients mentionnés de ces pièces de contact.An object of the present invention is therefore to propose a piece of contact including a female portion intended to receive a corresponding male portion, of improved construction relative to known contact parts, so as to avoid the disadvantages mentioned of these contact pieces.

Afin d'atteindre ce but, il est proposé une pièce de contact telle que décrite dans la revendication indépendante, des formes d'exécution particulières ou variantes étant décrites dans les revendications dépendantes. Les dernières revendications précisent certaines utilisations possibles d'une telle pièce de contact.In order to achieve this goal, it is proposed a contact piece such as described in the independent claim, forms of particular or variants being described in the dependent claims. The latest claims specify some possible uses of a such contact piece.

L'invention est décrite en détail ci-dessous, cette description, mentionnant encore certains avantages de l'invention, étant à considérer en regard du dessin annexé comportant les figures où :

  • les figures 1A, 1B et 1C représentent une portion d'une pièce de contact selon une construction de l'art antérieur, vue respectivement en coupe partielle longitudinale, en élévation et en coupe transversale,
  • la figure 2 représente une portion d'une pièce de contact selon une autre construction de l'art antérieur, vue en coupe partielle longitudinale, et
  • les figures 3A et 3B représentent une portion d'une pièce de contact selon une forme d'exécution préférentielle de l'invention, vue respectivement en coupe partielle longitudinale et en élévation.
    • The invention is described in detail below, this description, again mentioning certain advantages of the invention, to be considered with reference to the appended drawing comprising the figures in which:
  • FIGS. 1A, 1B and 1C show a portion of a contact piece according to a construction of the prior art, seen respectively in longitudinal partial section, in elevation and in cross-section,
  • FIG. 2 represents a portion of a contact piece according to another construction of the prior art, seen in longitudinal partial section, and
  • Figures 3A and 3B show a portion of a contact piece according to a preferred embodiment of the invention, respectively in longitudinal sectional view and in elevation.

    • Dans la description ci-dessous ainsi que dans toutes les figures, il ne sera fait mention ou représenté que la portion de type femelle de la pièce de contact 1, destinée à recevoir un élément correspondant de type mâle. Cet élément mâle est constitué d'une tige, terminée généralement par un embout hémisphérique ou en tronc de cône, et ayant un diamètre déterminé. Cet élément mâle peut être la portion mâle d'une pièce de contact correspondante ou alors une patte de circuit intégré ou alors une pièce de connexion d'un composant électronique, etc. L'autre portion de la pièce de contact 1, non décrite ou représentée ici peut être de n'importe quel type connu pour ce genre de pièce de contact, et peut comprendre par exemple une portion dans laquelle un fil peut être serti, vissé ou soudé, ou une portion de fixation sur un connecteur ou une plaque de circuit imprimé ou une deuxième portion de type femelle pour constituer une pièce de contact de transition, etc.In the description below as well as in all the figures, it does not will be mentioned or represented that the female type portion of the piece of contact 1, intended to receive a corresponding element of the male type. This male element consists of a stem, usually terminated by a hemispherical tip or truncated cone, and having a diameter determined. This male element may be the male portion of a piece of corresponding contact or else an integrated circuit lug or a connecting part of an electronic component, etc. The other portion of the contact piece 1, not described or shown here can be any what type known for this kind of contact piece, and can understand by a portion in which a wire can be crimped, screwed or welded, or a fixing portion on a connector or a printed circuit board or a second portion of the female type to constitute a piece of transition contact, etc.

    Selon la construction la plus simple connue, la portion de la pièce de contact qui nous intéresse ici est constituée d'un perçage axial d'une extrémité de la pièce de contact suivi de la réalisation de fentes radiales sur une portion de la longueur de la portion tubulaire réalisée par ce perçage, de manière à former des languettes élastiques. Ces languettes sont ensuite serrées entre elles de manière à former une pince élastique. Cette construction comporte de nombreux inconvénients, soit un risque de déformation permanente de une ou plusieurs languettes dans le cas d'introduction de travers d'un élément mâle ou d'introduction d'un élément mâle de trop fort diamètre. De plus, bien que la pièce de contact ne soit constituée que d'une seule pièce, celle-ci est coûteuse vu que le matériau nécessaire doit posséder aussi bien les qualités électriques que mécaniques nécessaires à son fonctionnement.According to the simplest known construction, the portion of the room of contact which interests us here consists of an axial drilling of a end of the contact piece followed by the realization of radial slots on a portion of the length of the tubular portion made by this piercing, to form resilient tongues. These tabs are then clamped together to form an elastic clip. This construction has many disadvantages, ie a risk of permanent deformation of one or more tongues in the case insertion of a male element or introduction of a male element of too large diameter. Plus, although the contact piece consists of only one part, it is expensive because the necessary material must possess both the electrical qualities that necessary for its operation.

    Une première amélioration apportée à la pièce de contact ci-dessus consiste à recouvrir la portion en question d'une douille, comme on le voit aux figures 1A, 1B et 1C. On voit sur ces figures la pièce de contact 1, constituée essentiellement d'une tige métallique dont une extrémité, visible sur la figure est destinée à recevoir un élément mâle, non visible sur les figures. L'autre extrémité de la pièce de contact, non visible sur les figures, est usinée de manière conventionnelle pour remplir une fonction quelconque connue d'une telle portion de pièce de contact. On voit que la portion de la pièce de contact 1 qui nous intéresse ici a été percée axialement, de manière à confectionner un logement 10 dans lequel viendra se loger l'élément mâle. Des fentes 11, trois dans la forme d'exécution représentée ici, ont été usinées afin de séparer trois languettes 12. Les extrémités libres 120 de ces trois languettes 12 sont ensuite serrées, par déformation permanente, de manière à fermer légèrement la pince formée par les trois languettes, comme on le voit sur les figures. Comme décrite jusqu'à présent, cette construction représente la première construction décrite précédemment. Afin d'empêcher un trop fort mouvement d'ouverture des languettes 12, on munit cette portion de la pièce de contact d'une douille 2 de forme tubulaire, fixée par sertissage ou tout autre moyen sur une portion de la pièce de contact 1 en arrière des languettes 12. Cette douille 2 fait butée contre les surfaces extérieures des languettes 12, empêchant un trop fort écartement de ces dernières.A first improvement to the contact piece above consists of covering the portion in question with a socket, as see in Figures 1A, 1B and 1C. These figures show the contact piece 1, consisting essentially of a metal rod, one end visible in the figure is intended to receive a male element, not visible on the figures. The other end of the contact piece, not visible on the figures, is machined in a conventional way to fulfill a function any known of such a portion of contact piece. We see that the portion of the contact piece 1 that interests us here was breakthrough axially, so as to form a housing 10 in which will come to lodge the male element. Slots 11, three in the form shown here, have been machined to separate three tabs 12. The free ends 120 of these three tongues 12 are then tightened, by permanent deformation, so as to close the clamp slightly formed by the three tabs, as seen in the figures. As described so far, this construction represents the first construction described previously. In order to prevent a too strong the opening movement of the tongues 12, this portion is provided with the contact piece of a sleeve 2 of tubular form, fixed by crimping or any other means on a portion of the contact piece 1 behind the 12. This bushing 2 stops against the outer surfaces of the tongues 12, preventing too much spacing of the latter.

    L'extrémité de la douille 2 tournée vers l'ouverture du logement 10, comprend une paroi d'extrémité 20 munie d'un trou traversant 21 coaxial à l'axe longitudinal de la pièce de contact 1, respectivement du logement 10. Le diamètre de ce trou 21 est déterminé de manière à ne laisser passer qu'un élément mâle ayant un diamètre inférieur à celui d'un élément mâle qui plaquerait les languettes 12 contre la douille 2.The end of the socket 2 turned towards the opening of the housing 10, comprises an end wall 20 provided with a through hole 21 coaxial with the longitudinal axis of the contact part 1, respectively of the 10. The diameter of this hole 21 is determined so as not to let pass that a male element having a diameter smaller than that of a male element which would press the tongues 12 against the socket 2.

    Le trou 21, coaxial à l'axe longitudinal du logement 10 fait en outre office de moyen de guidage de l'élément mâle lors de son introduction.The hole 21 coaxial with the longitudinal axis of the housing 10 makes in addition to serving as a means of guiding the male element during its introduction.

    Si cette dernière construction limite le risque de déformation des languettes 12 lors de l'introduction d'un élément mâle de trop fort diamètre ou non aligné, l'appui apporté par la douille 2 sur les languettes 12 en position écartée, notamment sur la portion arrière de ces languettes, fait que celles-ci ne travaillent alors plus entièrement de manière élastique, ce qui, en particulier, diminue les qualités de conductivité électrique du contact, notamment en cas de vibrations.If this latter construction limits the risk of deformation of tongues 12 when introducing a male element of too strong diameter or non-aligned, the support provided by the sleeve 2 on the tabs 12 in the separated position, in particular on the rear portion of these tabs, that they no longer work entirely in an elastic way, which, in particular, decreases the electrical conductivity qualities of the contact, especially in case of vibrations.

    L'inconvénient selon lequel les languettes 12 et le reste de la pièce de contact 1 sont usinés à partir d'une ébauche commune, c'est-à-dire sont constitués en un même matériau, subsiste, amenant ainsi à une pièce de contact coûteuse. Pour les mêmes raisons, il est difficile et/ou coûteux de former les extrémités 120 des languettes afin quelles présentent un arrondi pour une introduction facilitée de l'élément mâle ; une introduction de l'élément mâle très légèrement de travers relativement à l'axe longitudinal du logement 10 peut amener à mettre cet élément mâle en butée contre une extrémité 120 d'une languette, conduisant à plier cette languette vers l'intérieur du logement 10, soit à une destruction de la pièce de contact.The disadvantage that the tabs 12 and the rest of the contact piece 1 are machined from a common blank, that is to say are made of the same material, remains, thus leading to a piece costly contact. For the same reasons, it is difficult and / or expensive to form the ends 120 of the tongues so that they have a rounded for a facilitated introduction of the male element; an introduction of the male element very slightly crooked relative to the longitudinal axis of the housing 10 can cause to put this male element in abutment against one end 120 of a tongue, leading to folding this tongue towards inside the housing 10, or to destruction of the contact piece.

    La figure 2 montre une construction prévue pour éliminer ces derniers défauts.Figure 2 shows a construction planned to eliminate these last defects.

    Comme précédemment on a une pièce de contact 1 dont l'extrémité qui nous intéresse ici est munie d'un perçage axial formant un logement 10 pour l'élément mâle à recevoir. Un clip de contact 3 est chassé à l'intérieur du logement 10. Le clip de contact 3 est formé à partir d'un ruban métallique, de largeur correspondant à la longueur du clip, qui est étampé de manière à former une bande latérale munie de plusieurs languettes de forme essentiellement trapézoïdale, en saillie sur un des côtés de la bande latérale, les grandes bases de chaque languette étant attenantes à la bande latérale alors que les petites bases sont libres. La bande est découpée en portions, comportant chacune plusieurs languettes trapézoïdales la longueur de la portion correspondant au périmètre intérieur du logement 10. La portion de bande est ensuite roulée, les languettes étant ensuite serrées par leurs extrémités afin de les déformer et de diminuer le diamètre inscrit entre les extrémités libres des languettes. Le clip 3 ainsi formé est chassé dans le logement 10, les extrémités libres des languettes 30 étant dirigées vers le fond du logement 10 ; la portion 31 du clip 3, formé par la bande latérale décrite plus haut est maintenue vers l'extrémité ouverte du logement 10 par n'importe quel moyen connu, chassage, sertissage ou autre.As before we have a contact piece 1 whose the end that interests us here is provided with an axial drilling forming a housing 10 for the male element to receive. A contact clip 3 is chased inside the housing 10. The contact clip 3 is formed from a metal ribbon, of width corresponding to the length of the clip, which is stamped to form a lateral band with several tabs of substantially trapezoidal shape projecting from one of the sides of the sideband, the large bases of each tongue being adjacent to the sideband while the small bases are free. The strip is cut into portions, each with several tabs trapezoidal the length of the portion corresponding to the perimeter inside the housing 10. The tape portion is then rolled, the tongues are then tightened by their ends to deform them and to decrease the diameter inscribed between the free ends of the tongues. The clip 3 thus formed is driven into the housing 10, the free ends of the tongues 30 being directed towards the bottom of the housing 10; portion 31 of clip 3, formed by the sideband described above is maintained towards the open end of the housing 10 by any known means, chase, crimping or other.

    Selon cette construction, seul le clip 3 doit être construit en un alliage ayant d'excellente qualités de conduction ainsi que d'excellentes qualités mécaniques d'effet ressort. Il s'ensuit que le reste de la pièce de contact 1 peut être usiné dans un métal ou alliage meilleur marché, par exemple du laiton. Le clip 3 sera constitué de préférence à partir d'un alliage bronze/béryllium ou autre.According to this construction, only the clip 3 must be constructed in one alloy having excellent conductive qualities as well as excellent mechanical qualities of spring effect. It follows that the rest of the room contact 1 can be machined in a cheaper metal or alloy, by example of brass. The clip 3 will preferably be made from a bronze / beryllium alloy or other.

    Lors de l'introduction d'un élément mâle, les languettes 30 s'écartent afin d'enserrer ledit élément mâle. Le mouvement d'écartement des languettes 30 est aussi limité ici par la paroi interne du logement 10, avec les mêmes inconvénients que mentionnés plus haut.When introducing a male element, the tongues 30 deviate to enclose said male element. The spacing movement tabs 30 is also limited here by the inner wall of the housing 10, with the same disadvantages as mentioned above.

    Un autre inconvénient de cette construction est que, vu la faible valeur de l'angle α relativement à l'axe longitudinal que forment les languettes 30 serrées, relativement à l'axe longitudinal du logement 10, la longueur selon laquelle il est nécessaire d'introduire l'élément mâle dans le logement 10 avant que son extrémité n'entre en contact avec les languettes 30 est importante. Augmenter cet angle afin de diminuer cette distance pourrait amener à ce que les languettes 30 s'arc-boutent contre l'élément mâle lors du retrait de ce dernier, amenant à son endommagement.Another disadvantage of this construction is that, given the low the value of the angle α relative to the longitudinal axis formed by the tongues 30 tight relative to the longitudinal axis of the housing 10, the length that it is necessary to introduce the male element into the housing 10 before its end comes into contact with the tabs 30 is important. Increase this angle to decrease this distance could cause the tabs 30 to brace against the element male during the withdrawal of the latter, leading to its damage.

    L'ensemble des inconvénients mentionnés précédemment concernant les constructions connues de l'art antérieur est éliminé par la construction selon l'invention, dont une forme d'exécution préférentielle est représentée sur les figures 3A et 3B.All the disadvantages mentioned previously concerning the known constructions of the prior art is eliminated by the construction according to the invention, including a preferred embodiment is shown in Figures 3A and 3B.

    On a, comme précédemment une pièce de contact 1 dont l'extrémité destinée à recevoir l'élément mâle est percée longitudinalement afin de former un logement 10 de réception de l'élément mâle. L'extrémité ouverte du logement 10 comprend une première portée cylindrique intérieure 100, dont le diamètre intérieur est supérieur à celui du logement 10, suivie d'une deuxième portée cylindrique intérieure 101 dont le diamètre intérieur est compris entre celui de la portée 100 et celui du fond du logement 10.We have, as before, a contact piece 1 whose the end intended to receive the male element is pierced longitudinally to form a housing 10 for receiving the male element. The end open housing 10 includes a first cylindrical scope inner 100, whose inside diameter is greater than that of the dwelling 10, followed by a second inner cylindrical bearing surface 101 whose inner diameter is between range 100 and bottom housing 10.

    Un clip de contact 4, est chassé par l'extrémité ouverte du logement 10, de manière à ce que sa portion cylindrique 40 vienne se positionner sur la portée cylindrique intérieure 101. A contact clip 4, is driven by the open end of the housing 10, so that its cylindrical portion 40 comes to position on the inner cylindrical bearing surface 101.

    Le clip 4 est obtenu de préférence de manière assez similaire à ce qui a été décrit précédemment pour le clip 3. Une opération complémentaire d'arquage vers l'extérieur des extrémités des languettes est effectuée lorsque les clips sont toujours assemblés en une bande continue. En variante aux lamelles de forme trapézoïdale décrites, on peut aussi avoir des lamelles de formé rectangulaire et des fentes de séparation de forme trapézoïdale.The clip 4 is preferably obtained in a manner similar to that which was previously described for the clip 3. An operation complementary outward arching ends of the tabs is performed when clips are always assembled into a strip keep on going. As an alternative to the trapezoidal slats described, it is possible to also have slats of rectangular shape and separation slots Trapezoidal shape.

    Le clip 4 est fixé, par chassage, sertissage ou tout autre moyen connu sur cette portée intérieure 101. Contrairement à ce qui a été décrit plus haut concernant le clip 3, les languettes de contact 41 du clip 4 ont leurs extrémités libres 410 tournées vers l'ouverture du logement 10. De plus ces extrémités libres 410, pour chacune des languettes 41, sont formées de manière à présenter une portion d'extrémité 411 arquée, l'extrémité libre dirigée vers l'extérieur s'écartant de l'axe longitudinal du logement 10. Ce dispositif est complété d'une douille extérieure 5 chassée et fixée sur une portée cylindrique extérieure 102 de la pièce de contact 1. L'extrémité de la douille 5 tourné vers l'ouverture du logement 10, comprend une paroi d'extrémité 50 munie d'un trou traversant 51 coaxial à l'axe longitudinal de la pièce de contact 1, respectivement du logement 10. Le diamètre de ce trou 51 est déterminé de manière à ne laisser passer qu'un élément mâle de diamètre acceptable par le clip de contact 4. On voit par ailleurs sur la figure, que si un élément mâle a été introduit dans le clip 4, son diamètre étant inférieur au diamètre du trou 51, le mouvement d'écartement des languettes 41 du clip 4 n'est jamais limité par le diamètre intérieur de la portée 100, vu qu'il est supérieur à celui de la portée 101, ni par le diamètre intérieur de la douille 5, vu que celui-ci est dimensionné de manière à permettre un écartement maximum des languettes 41. Ainsi, pour un diamètre, respectivement une jauge, déterminé d'un élément mâle, la pièce de contact femelle correspondante comprend un clip de contact 4 dont les languettes 41 subissent une déformation uniquement élastique, sur toute leur longueur et sur toute leur plage de déformation, la limitation en diamètre de l'élément mâle étant apportée par le trou calibré 51 de la douille 5. Ce mode de fonctionnement en régime élastique assure une conductivité électrique du contact maximum, même en cas de vibrations. The clip 4 is fixed, by driving, crimping or any other means known on this inner bearing 101. Contrary to what has been described above concerning the clip 3, the contact tabs 41 of the clip 4 have their free ends 410 turned towards the opening of the housing 10. From the more these free ends 410, for each of the tongues 41, are formed so as to have an arcuate end portion 411, the end free movement outwards from the longitudinal axis of the dwelling 10. This device is completed with an outer sleeve 5 driven away and fixed on an outer cylindrical bearing surface 102 of the contact piece 1. The end of the sleeve 5 turned towards the opening of the housing 10, comprises a wall end 50 provided with a through hole 51 coaxial with the longitudinal axis of the contact part 1, respectively of the housing 10. The diameter of this hole 51 is determined so as to pass only one male element of diameter acceptable by the contact clip 4. It can also be seen on the figure, that if a male element has been introduced into the clip 4, its diameter being smaller than the diameter of the hole 51, the spacing movement of tabs 41 of the clip 4 is never limited by the inner diameter of the range 100, because it is greater than that of the range 101, nor by the diameter inside the bushing 5, since it is dimensioned so as to allow a maximum spacing tabs 41. Thus, for a diameter, respectively a gauge, determined of a male element, the piece corresponding contact point comprises a contact clip 4 whose tongues 41 undergo a deformation only elastic, over all their length and throughout their deformation range, the limitation in diameter of the male element being provided by the calibrated hole 51 of the 5. This mode of operation in elastic mode ensures a electrical conductivity of the maximum contact, even in case of vibrations.

    L'angle α que fait chacune des languettes relativement à l'axe longitudinal est aussi de faible valeur ; cet angle est compris typiquement entre 4° et 10°, étant de préférence compris entre 6° et 8°. Vu la portion 411 arquée des extrémités des languettes 41, on ne peut avoir d'arcboutement de l'élément mâle lors de son introduction ou de son retrait entre les languettes 41.The angle α that each of the tabs makes relative to the axis longitudinal is also of low value; this angle is typically understood between 4 ° and 10 °, being preferably between 6 ° and 8 °. Given the portion 411 arcuate ends of the tongues 41, we can not have arcboutement of the male element during its introduction or withdrawal between the tabs 41.

    Un autre avantage de présence de la portion arquée est que les languettes 41 présentent ainsi une surface de contact plus grande avec l'élément mâle, diminuant en conséquence la résistance de contact entre la pièce de contact femelle et la pièce de contact mâle.Another advantage of presence of the arcuate portion is that the tongues 41 thus have a larger contact area with the male element, thereby decreasing the contact resistance between the female contact piece and the male contact piece.

    Un autre avantage de cette portion arquée est une meilleure transmission des efforts mécaniques entre l'élément mâle et le clip, notamment en présence de vibrations. En effet, il a été observé un endommagement de la surface de contact de l'élément mâle en cas de vibrations lorsque les extrémités des languettes de contact présentent une arête plutôt qu'un arrondi comme décrit pour cette forme d'exécution.Another advantage of this arcuate portion is a better transmission of the mechanical forces between the male element and the clip, especially in the presence of vibrations. Indeed, he was observed a damage to the contact surface of the male element in case of vibrations when the ends of the contact tongues have a edge rather than rounding as described for this embodiment.

    Un autre avantage de ce dispositif est que la distance d'introduction de l'élément mâle avant qu'un contact soit établi est très faible puisque l'élément mâle rencontre premièrement la portion de faible diamètre du clip 4 formé par les languettes 41 rapprochées.Another advantage of this device is that the distance of introducing the male element before contact is established is very weak since the male element first meets the weak portion diameter of the clip 4 formed by the tabs 41 close together.

    Encore un avantage de ce dispositif est que le trou 51, aligné avec les extrémités libres 410 des languettes 41 forme un guidage en deux points de l'élément mâle en cours d'introduction, empêchant une introduction de travers.Yet another advantage of this device is that hole 51, aligned with the free ends 410 of the tongues 41 form a guide in two points of the male element being introduced, preventing a crooked introduction.

    La présence de la douille 5 par dessus la région de la pièce de contact 1 où le clip 4 est chassé et fixé, assure un renforcement mécanique de cette dernière région par frettage, respectivement une meilleure fixation du clip 4. The presence of the socket 5 over the area of the room contact 1 where the clip 4 is driven and fixed, provides mechanical reinforcement of this last region by frettage, respectively a better fastening of the clip 4.

    Des essais ont montré que lors de l'introduction d'un élément mâle dans une pièce de contact femelle telle que représentée sur la figure 2, soit avec un clip de contact ayant les extrémités libres des languettes tournées vers le fond du logement 10, on a tout d'abord un pic de force dès l'établissement du contact entre l'élément mâle et les languettes, suivi d'une force environ constante de plus faible valeur. Par contre, lors de l'introduction d'un élément mâle dans une pièce de contact selon l'invention, on a une force d'introduction constante de faible valeur, sans le pic de début. Le mouvement d'introduction de l'élément mâle dans l'élément femelle est donc beaucoup plus doux, ménageant ainsi l'état de surface de l'élément mâle et réduisant ainsi le risque de rupture de l'élément mâle, notamment lorsqu'il s'agit d'une patte de circuit intégré à introduire dans un socle.Tests have shown that when introducing an element male in a female contact piece as shown in the figure 2, with a contact clip having the free ends of the tabs turned towards the bottom of housing 10, we first of all have a peak of strength from the establishment of the contact between the male element and the tongues, followed of about constant force of lower value. On the other hand, when the introduction of a male element into a contact piece according to the invention, we have a constant force of low value, without the peak of beginning. The movement of introduction of the male element in the female element is therefore much softer, thus sparing the state of surface of the male element and thus reducing the risk of breakage of the male element, especially when it is an integrated circuit leg to introduce into a base.

    La fabrication séparée du clip et du reste de la pièce de contact comporte de nombreux avantages, optimisation du choix du matériau pour l'un ou l'autre de ces composants selon ses exigences, traitements thermique et/ou de revêtement adapté pour chaque élément, gestion séparée des stocks de clips et des stocks de pièces de connexions selon différents types, pour fixation sur connecteur, sur socle de circuit intégré ou sur circuit imprimé, etc. ces diverses qualités amenant à une diminution générale du coût de production.Separate manufacture of the clip and the rest of the contact piece has many advantages, optimizing the choice of material for one or the other of these components according to its requirements, treatments thermal and / or suitable coating for each element, management separate clip stocks and parts inventory connections different types, for mounting on a connector, on an integrated circuit on printed circuit, etc. these various qualities leading to a decrease general cost of production.

    La pièce de contact 1, à l'exception du clip 4, sera fabriquée en un métal ou un alliage de faible coût, par exemple du laiton ou plus particulièrement du laiton apte à supporter le sertissage d'un conducteur dans la portion de la pièce de contact 1 opposée à celle décrite en détail plus haut. Le clip 4 sera fabriqué de manière préférentielle en un alliage de bronze et de bérylium.Contact piece 1, with the exception of clip 4, will be manufactured in a low cost metal or alloy, for example brass or more particularly brass capable of supporting the crimping of a driver in the portion of the contact piece 1 opposite to that described in detail upper. The clip 4 will preferably be made of an alloy of bronze and berylium.

    Claims (19)

    1. Contact piece (1) comprising at least one portion having a terminal end of the female type, and intended for accommodating a corresponding element of the male type in a hollow (10) axially disposed in said portion, said hollow comprising a contact clip (4) intended to guarantee the electrical contact between said male element and the contact piece, said contact clip being provided with a plurality of elastic contact tongues (41) that are fastened to an annular crown (40), each tongue (41) comprising a free end (410) facing toward the opening of said hollow, said contact piece (1) and the clip (4) being made from different materials, characterized in that said annular crown (40) is fastened in the interior of said hollow via an outer peripheral surface cooperating with an inner peripheral surface (101) of said hollow.
    2. Contact piece according to claim 1, characterized in that each of said tongues (41) is inclined forming an angle α relative to the longitudinal axis of said hollow.
    3. Contact piece according to claim 2, characterized in that the angle α is comprised between 4° and 10°.
    4. Contact piece according to claim 3, characterized in that the angle α is comprised between 6° and 8°.
    5. Contact piece according to one of the preceding claims, characterized in that each tongue includes an arched portion (411) close to its free end (410), with the rim of said free end receding from the longitudinal axis of said hollow.
    6. Contact piece according to one of the preceding claims, characterized in that in addition it comprises a sleeve (5) of essentially tubular shape surrounding the portion of the contact piece that is provided with said contact clip, said sleeve being provided with a front wall (50) having a through hole (51) coaxial with the longitudinal axis of the hollow.
    7. Contact piece according to claim 6, characterized in that the sleeve comprises a cylindrical rear portion fastened to a corresponding cylindrical neck (102) of said contact piece.
    8. Contact piece according to one of claims 6 or 7, characterized in that the through hole (51) has a diameter such as to admit a male element with a diameter equal to or smaller than a specific diameter, and to prevent introduction of a male element with a diameter larger than said specific diameter, into said portion of the female type contact piece.
    9. Contact piece according to claim 8, characterized in that the diameter of said hollow (10) in its portion (100) surrounding said tongues (41) is larger than the circumscribed diameter of said tongues in their spread apart position when a male element having said specific diameter has been introduced into said contact piece.
    10. Contact piece according to one of claims 8 or 9, characterized in that no portion of the contact piece (1) or of the sleeve (5) will limit the spreading apart movement of the tongues (41) of the contact clip when a male element having said specific diameter or a smaller diameter is introduced between said tongues.
    11. Contact piece according to one of claims 8 or 9, characterized in that the spreading apart movement of the tongues (41) of the contact clip is an elastic movement when a male element having said specific diameter or a smaller diameter is introduced between said tongues.
    12. Contact piece according to claim 8, characterized in that the through hole (51) and the arched portions (411) of the elastic tongues (41) serve as guidance for the male element when this is introduced.
    13. Contact piece according to one of the preceding claims, characterized in that the contact piece (1) is made of brass.
    14. Contact piece according to claim 13, characterized in that the contact piece (1) is made of an alloy of brass able to sustain crimping.
    15. Contact piece according to one of the preceding claims, characterized in that the clip (4) is made of an alloy of bronze and beryllium.
    16. Contact piece according to one of the preceding claims, characterized in that it complies with the standard MIL-C 39029.
    17. Connector provided with at least one contact piece according to one of the preceding claims.
    18. Component baseplate provided with at least one contact piece according to one of claims 1 to 16.
    19. Printed circuit board provided with at least one contact piece according to one of claims 1 to 16.
    EP99811102A 1999-11-30 1999-11-30 Contact member for an electrical connector Expired - Lifetime EP1107378B1 (en)

    Priority Applications (4)

    Application Number Priority Date Filing Date Title
    AT99811102T ATE243375T1 (en) 1999-11-30 1999-11-30 CONTACT ORGANIZER FOR AN ELECTRICAL CONNECTOR
    EP99811102A EP1107378B1 (en) 1999-11-30 1999-11-30 Contact member for an electrical connector
    DE69908953T DE69908953T2 (en) 1999-11-30 1999-11-30 Contact member for an electrical connector
    US09/499,638 US6264508B1 (en) 1999-11-30 2000-02-08 Female type contact piece enabling electrical contact with a male element

    Applications Claiming Priority (1)

    Application Number Priority Date Filing Date Title
    EP99811102A EP1107378B1 (en) 1999-11-30 1999-11-30 Contact member for an electrical connector

    Publications (2)

    Publication Number Publication Date
    EP1107378A1 EP1107378A1 (en) 2001-06-13
    EP1107378B1 true EP1107378B1 (en) 2003-06-18

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    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP99811102A Expired - Lifetime EP1107378B1 (en) 1999-11-30 1999-11-30 Contact member for an electrical connector

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    US (1) US6264508B1 (en)
    EP (1) EP1107378B1 (en)
    AT (1) ATE243375T1 (en)
    DE (1) DE69908953T2 (en)

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    Publication number Publication date
    ATE243375T1 (en) 2003-07-15
    DE69908953T2 (en) 2004-05-19
    US6264508B1 (en) 2001-07-24
    DE69908953D1 (en) 2003-07-24
    EP1107378A1 (en) 2001-06-13

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