EP0773609B1 - Retaining and contact element and connector having such element - Google Patents

Retaining and contact element and connector having such element Download PDF

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Publication number
EP0773609B1
EP0773609B1 EP96117086A EP96117086A EP0773609B1 EP 0773609 B1 EP0773609 B1 EP 0773609B1 EP 96117086 A EP96117086 A EP 96117086A EP 96117086 A EP96117086 A EP 96117086A EP 0773609 B1 EP0773609 B1 EP 0773609B1
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EP
European Patent Office
Prior art keywords
forced
fact
connection
connector
contact
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Expired - Lifetime
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EP96117086A
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German (de)
French (fr)
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EP0773609A1 (en
Inventor
Michel Pesson
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FCI SA
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Framatome Connectors International SAS
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Publication of EP0773609A1 publication Critical patent/EP0773609A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/7005—Guiding, mounting, polarizing or locking means; Extractors
    • H01R12/7011—Locking or fixing a connector to a PCB
    • H01R12/7064—Press fitting

Definitions

  • the invention relates to a holding and contact element which can be inserted into force, or termination of seamless electrical contact, including connection of a connection element on a printed circuit.
  • Solderless electrical contact terminations are known from documents US 3,634,819 and EP 0 141,492.
  • a flat spindle also includes spring arms arched outwards transversely to the axial direction of the contact.
  • a holding device complementary to the connector on the printed circuit is generally made either by devices provided with arms by harpoon devices for which the holding element consists of a spring clip provided with external projections or teeth, coming to seize in the internal wall of a metallized hole of the circuit printed.
  • a harpoon attachment of this type is known from document US 5,154,634.
  • the use of such a fastener as a ground contact is frequent but the connection made is through the teeth planted in the metallized layer of the hole which thus forms point contact zones which, on the one hand, are not not favorable for an effective mass continuity and which, on the other hand, risk to deteriorate over time.
  • This holding device is in any case not suitable for the production of power contacts.
  • the present invention proposes to produce a force insertable element offering a large retention surface allowing, on the one hand, a maintenance robust connector and, on the other hand, a reliable connection over time suitable for make a power contact or a ground contact.
  • the element of maintenance and electrical contact insertable by force consists of a spindle provided with a slot on a portion of the was constituting this pin, this slot defining branches of shape arched longitudinal, at least one of the branches defined by this slot having a massive section whose external wall has a transverse profile in an arc of a variable radius as a function of the longitudinal position of the section considered.
  • the split portion is delimited at its end upper by a rigid base and at its lower end by a beam connection, the beam and the base delimiting the ends of the barrel.
  • the base can advantageously constitute the lower surface of a collar extended by a connection piece for a connection element complementary.
  • the internal walls of the branches extend in a direction parallel to the axis of the barrel.
  • the branches may each have a wall internal cross-sectional profile in an arc of constant radius over the length of the branches.
  • the branches may have flat side walls. parallel.
  • the invention also relates to a connector element for a circuit.
  • printed comprising an insulating body for receiving electrical contacts, these electrical contacts being provided on the one hand with a connection termination to a contact carried by a complementary connector element and, on the other hand, of a termination of connection on a printed circuit, the termination of connection on printed circuit of at least one of said contacts being constituted of a force-insertable element according to the invention so as to achieve a power connection.
  • It also relates to a connector element for a printed circuit shielding type for which one or more insertable elements force according to the invention makes a ground connection between the envelope of shielding and a metallized hole of the printed circuit.
  • the massive section of the branches of the element insertable by force according to the invention gives it the advantage of working by plastic deformation of branches and allows residual pressure to be applied to the wall of the metallized hole with possible penetration.
  • the force-insertable retaining element is consisting of a spindle, of generally cylindrical shape, designated by the reference general 1.
  • This spindle comprises a tubular upper part 10, a part central flange 11 and a barrel-shaped lower part comprising two branches 2,3 separated by a slot 16 and connected by a terminal beam 8.
  • the collar has a lower face 9 to which the branches 2 and 3, this surface 9 thus forming a base for branches 2 and 3.
  • the collar has sections 13 whereas in FIG. 1-A, the collar 11 is followed towards the upper part of an indented area 12 the function of sections 13 and the indented area will be explained in relation to the Figures 4 and 5.
  • the element 1 is seen from the side and in half section along a vertical plane passing through its longitudinal axis.
  • the tubular spindle 1 is provided with a bore 14 opening into the upper part of the spindle, and that a slot 16 separates the branches 2 and 3.
  • the branches 2 and 3 each have an outer surface 5 and an inner surface 6, the branches have a massive section such that their elasticity is reduced to a minimum.
  • the external surface 5 of at least one of the pins has a transverse profile in an arc of a circle of variable radius as a function of the longitudinal position of the section considered, this variable radius thus defining for the branch considered a lower guide zone to the insertion into a hole 31 of a printed circuit 30, an enlarged cross-sectional area of interference with the wall of the hole 31 and an upper reduced cross-sectional area of connection of the branch with the base 9.
  • the branches are connected, at their insertion end, by a rigid connection beam (8).
  • Figures 3-A and 3-B show the interference of the section of the branches in a metallized hole 31 of a printed circuit, metallized hole connected in a manner known per se to a metallized track of said printed circuit, respectively, in Figure 3 -A in the case of a hole of minimum diameter and a maximum offset of the axis of the hole with the axis of the spindle and, in Figure 3-B in the case of a hole of maximum diameter.
  • the diameter of a metallized hole for fixing a connector commonly 3 mm, can, depending on manufacturing tolerances, increase to 3.20 mm.
  • the metallization layer typically comprising a layer of 25 microns of copper covered with 5 microns of tin-lead.
  • the tolerated offset between the axes of the hole and of the holding element is 0.12 mm.
  • the holding element corresponding to this drilling will have branches whose enlarged cross-sectional area (seen in figure 2-B) will define a diameter of 3.25 mm and whose massive constitution will allow interference with metallized walls at least 0.05 mm, for the maximum diameter hole, up to an interference of 0.27 mm, for the minimum diameter hole with maximum offset.
  • the combined crushing of the barrel of the retaining element and the walls of the hole prevents the plating of the metallization layer.
  • FIG. 4 describes an application of a holding element according to the invention used as a fixing and ground connection pad of an electrical connector on a printed circuit.
  • the connector designated by the general reference 40 comprises in known manner an insulating body 41 supporting contacts, provided with connection terminations 42 with tracks of the printed circuit 30, and a metal shielding envelope constituted by a front shell 43, covering the lateral faces of the receiving part of a complementary connector (not shown), the metal casing being provided with flanks 44 and flaps 45, the flanks 44 and flaps 45 securing the metallic casing and the contact support insulator .
  • Such connectors are for example known under the name "SUB D".
  • the insertable element 1 traps and maintains the metal casing 44 and the insulation 41 between its collar 11 and the folded upper edge 17 of its tubular upper part 10.
  • the part tubular upper may be provided with an internal thread 15 allowing either the fixing of a complementary connector comprising retaining screws, or the fixing of a coding means.
  • the fixing element comprises a knurling 12 inserted by force into the insulation 41 of the connector and the collar 11 comes to bear against the lower edge of the insulation 41 of the connector.
  • the connector thus provided with its fixing studs is then inserted on the circuit printed, the mounting pads ensuring continuity of mass between the shell and the printed circuit.
  • FIGS. 6 and 7 are described respectively a power contact of angled type and a connector element receiving this contact.
  • the contact of power is built around a central block 53.
  • the central block 53 is provided on a first face of a tip 52 on which is fixed a termination 50 of connection to a contact carried by an additional connector.
  • the connection termination 50 which has a bore 51 in the rear inserted from the front into a cell of an insulator 61 contact support.
  • the block central 53 is inserted from the rear into the cell of the insulation so that the tip 52 is embedded in the bore 51 of the termination 50 thus trapping the insulator 61.
  • the central block also comprises on a second face a bore 54 receiving the tubular part 10 of an element 1.
  • the power contact thus made up is suitable for 30 Amp current flows without requiring solder the contact on the printed circuit and, by its constitution, can realize the maintaining the connector on the printed circuit.
  • the manufacture of a connector straight contacts is possible by omitting the central block and simply embedding the tubular rear part 10 of the insertable element 1 in the bore 51 of the part connection.
  • Figures 8 A, 8 B, 9 and 10 show different embodiments of power contacts and connectors receiving them.
  • Figures 8A and 8B it is a bent type connector for which the contact element 1 is connects to a connection termination with an additional contact a connector not shown.
  • Figure 8 A the building blocks insulation 70, connection termination 71 and contact element 1 are shown separate.
  • a bore is made in part 10 of the element 1, bore in which the rear part 74 of the connection termination 71 is forcibly inserted.
  • the power contact in the insulation is maintained by the front part of termination 71.
  • To make the power contact used in the connector of FIG. 10 it is the rear part 10 of the contact element 1 which is forced into a bore 75 of the contact termination 71.
  • the insulating element 70 can be provided with pins centering and fixing 72, 73.
  • a force-insertable element according to the invention can be advantageously obtained by a first step of bar turning cylindrical to achieve the external shape of the spindle, a second step axial bore of the spindle and a third step of milling the side faces branches of the spindle, this last step creating the slot 16 separating the branches 2, 3.
  • This milling step can be carried out using strawberries straight or strawberry shape to give respectively either side faces 7 parallel planes, either inclined side faces or any profile.
  • the internal walls 6 of the branches obtained by the boring step are advantageously parallel along the length of the branches and provided with a profile transverse in a circular arc of constant radius along the length of the branches for avoid any variation in the distance between the flange and the contact area with the printed circuit during the force insertion and increase the rigidity of the branches.

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  • Coupling Device And Connection With Printed Circuit (AREA)
  • Multi-Conductor Connections (AREA)

Description

L'invention concerne un élément de maintien et de contact insérable à force, ou terminaison de contact électrique sans soudure, notamment de raccordement d'un élément de connexion sur un circuit imprimé.The invention relates to a holding and contact element which can be inserted into force, or termination of seamless electrical contact, including connection of a connection element on a printed circuit.

Des terminaisons de contact électrique sans soudures sont connues des documents US 3 634 819 et EP 0 141 492.Solderless electrical contact terminations are known from documents US 3,634,819 and EP 0 141,492.

Dans le document US 3 634 819 est décrite la réalisation d'une broche de contact constituée d'une tige cylindrique dans laquelle sont réalisées des branches ressort aplaties de forme arquée.In the document US 3 634 819 is described the production of a pin contact consisting of a cylindrical rod in which branches are made flattened spring with an arcuate shape.

Dans le document EP 0 141 492 une broche plate comporte elle aussi des branches ressort arquées vers l'extérieur transversalement à la direction axiale du contact.In document EP 0 141 492 a flat spindle also includes spring arms arched outwards transversely to the axial direction of the contact.

Dans ces documents, la réalisation d'un contact électrique entre une broche et la paroi interne cylindrique d'un trou métallisé d'un circuit imprimé est obtenue par appui élastique des branches ressort de la broche sur la surface interne du trou métallisé. Les connecteurs utilisant de tels contacts insérés à force dans le circuit imprimé évitent de procéder à une étape de soudure des broches.In these documents, making an electrical contact between a pin and the cylindrical inner wall of a metallized hole in a printed circuit is obtained by elastic support of the spring branches of the spindle on the surface internal of the metallized hole. Connectors using such force-inserted contacts in the printed circuit avoid carrying out a step of soldering the pins.

Ces dispositif, bien adaptés à une connexion électrique pour des petits signaux, n'offrent pas de bonnes caractéristiques de maintien mécanique et sont sensibles à un désaxage de la broche et du trou.These devices, well suited to an electrical connection for small signals, do not offer good mechanical holding characteristics and are sensitive to misalignment of the spindle and the hole.

Pour améliorer la rétention du connecteur, un dispositif de maintien complémentaire du connecteur sur le circuit imprimé est généralement réalisé soit par des dispositifs munis de bras par des dispositifs harpons pour lesquels l'élément de maintien est constitué d'une attache ressort munie de saillies externes ou dents, venant gripper dans la paroi interne d'un trou métallisé du circuit imprimé.To improve the retention of the connector, a holding device complementary to the connector on the printed circuit is generally made either by devices provided with arms by harpoon devices for which the holding element consists of a spring clip provided with external projections or teeth, coming to seize in the internal wall of a metallized hole of the circuit printed.

Une attache harpon de ce type est connue du document US 5 154 634. L'utilisation d'une telle attache comme contact de masse est fréquente mais la connexion réalisée l'est au travers des dents plantées dans la couche métallisée du trou ce qui forme ainsi des zones de contact ponctuelles qui, d'une part, ne sont pas favorables pour une continuité de masse efficace et qui, d'autre part, risquent de se détériorer dans le temps. Ceci conduit généralement les utilisateurs à effectuer une opération de reprise de soudure de cet élément annulant ainsi l'intérêt d'utiliser un connecteur à contacts sans soudure.A harpoon attachment of this type is known from document US 5,154,634. The use of such a fastener as a ground contact is frequent but the connection made is through the teeth planted in the metallized layer of the hole which thus forms point contact zones which, on the one hand, are not not favorable for an effective mass continuity and which, on the other hand, risk to deteriorate over time. This generally leads users to perform a weld recovery operation on this element thus canceling the advantage of using a connector with solderless contacts.

Ce dispositif de maintien n'est de toute façon pas adapté à la réalisation de contacts de puissance.This holding device is in any case not suitable for the production of power contacts.

La présente invention propose de réaliser un élément insérable à force offrant une surface de rétention importante permettant, d'une part, un maintien robuste du connecteur et, d'autre part, une connexion fiable dans le temps apte à réaliser un contact de puissance ou un contact de masse.The present invention proposes to produce a force insertable element offering a large retention surface allowing, on the one hand, a maintenance robust connector and, on the other hand, a reliable connection over time suitable for make a power contact or a ground contact.

Pour cela l'élément de maintien et de contact électrique insérable à force selon l'invention est constitué d'une broche munie d'une fente sur une portion du fût constituant cette broche, cette fente définissant des branches de forme longitudinale arquée, au moins une des branches définies par cette fente possèdant une section massive dont la paroi externe possède un profil transversal en arc de cercle de rayon variable en fonction de la position longitudinale de la section considérée.For this the element of maintenance and electrical contact insertable by force according to the invention consists of a spindle provided with a slot on a portion of the was constituting this pin, this slot defining branches of shape arched longitudinal, at least one of the branches defined by this slot having a massive section whose external wall has a transverse profile in an arc of a variable radius as a function of the longitudinal position of the section considered.

Préférablement, la portion fendue est délimitée en son extrémité supérieure par un socle rigide et en son extrémité inférieure par une poutre de liaison, la poutre et le socle délimitant les extrémités du fût.Preferably, the split portion is delimited at its end upper by a rigid base and at its lower end by a beam connection, the beam and the base delimiting the ends of the barrel.

Le socle peut avantageusement constituer la surface inférieure d'une collerette prolongée par un embout de solidarisation d'un élément de connexion complémentaire.The base can advantageously constitute the lower surface of a collar extended by a connection piece for a connection element complementary.

Dans un mode de réalisation particulier, les parois internes des branches s'étendent selon une direction parallèle à l'axe du fût.In a particular embodiment, the internal walls of the branches extend in a direction parallel to the axis of the barrel.

Plus particulièrement, les branches peuvent comporter chacune une paroi interne de profil transversal en arc de cercle de rayon constant sur la longueur des branches.More particularly, the branches may each have a wall internal cross-sectional profile in an arc of constant radius over the length of the branches.

En outre les branches peuvent comporter des parois latérales planes parallèles. In addition, the branches may have flat side walls. parallel.

L'invention concerne aussi un élément de connecteur pour circuit imprimé comportant un corps isolant de réception de contacts électriques, ces contacts électriques étant munis d'une part d'une terminaison de raccordement à un contact porté par un élément de connecteur complémentaire et, d'autre part, d'une terminaison de raccordement sur circuit imprimé, la terminaison de raccordement sur circuit imprimé d'au moins un desdits contacts étant constituée d'un élément insérable à force selon l'invention de manière à réaliser une connexion de puissance.The invention also relates to a connector element for a circuit. printed comprising an insulating body for receiving electrical contacts, these electrical contacts being provided on the one hand with a connection termination to a contact carried by a complementary connector element and, on the other hand, of a termination of connection on a printed circuit, the termination of connection on printed circuit of at least one of said contacts being constituted of a force-insertable element according to the invention so as to achieve a power connection.

Elle concerne aussi un élément de connecteur pour circuit imprimé de type à enveloppe de blindage pour lequel un ou plusieurs élément insérable à force selon l'invention réalise une connexion de masse entre l'enveloppe de blindage et un trou métallisé du circuit imprimé.It also relates to a connector element for a printed circuit shielding type for which one or more insertable elements force according to the invention makes a ground connection between the envelope of shielding and a metallized hole of the printed circuit.

La section massive des branches de l'élément insérable à force selon l'invention lui donne l'avantage de travailler par déformation plastique des branches et permet une mise en pression rémanente de la paroi du trou métallisé avec pénétration éventuelle.The massive section of the branches of the element insertable by force according to the invention gives it the advantage of working by plastic deformation of branches and allows residual pressure to be applied to the wall of the metallized hole with possible penetration.

Les branches peuvent se déformer en parallélogramme entre leurs points de raccordement à la collerette et leurs points de raccordement à la poutre de liaison, ce qui autorise le rattrapage d'un éventuel désaxage de l'élément insérable à force par rapport au trou métallisé du circuit imprimé.
D'autres caractéristiques et avantages de l'invention apparaítront mieux à la lecture de la description qui va suivre en liaison avec les dessins qui représentent:

  • en figures 1-A et 1-B une vue en perspective d'un élément de maintien et de contact insérable à force selon deux variantes de réalisation de l'invention,
  • en figure 2-A, 2-C et 2-D respectivement en vue de face demi-coupe, vue de coté externe et vue de dessous un élément de maintien et de contact insérable à force selon l'invention,
  • la figure 2-B est une section transversale des branches de l'élément de maintien selon l'invention,
  • les figure 3-A et 3-B représentent la section des branches insérées dans un circuit imprimé,
  • les figure 4 et 5, représentent une vue de coté en coupes partielles d'un connecteur muni d'un élément de maintien et de contact insérable à force selon l'invention utilisé en terminaison de continuité de masse,
  • en figure 6 une vue en perspective d'un contact de puissance comportant un élément de maintien et de contact selon une troisième variante de réalisation de l'invention,
  • en figure 7 une vue en coupe partielle d'un connecteur muni d'un contact de puissance conforme à la figure 6,
  • en figures 8 A, 8 B une vue en coupe d'un connecteur muni d'un contact puissance en deux parties comportant un élément de contact selon l'invention,
  • en figures 9 une vue en perspective d'un contact de puissance droit en deux parties comportant un élément de contact selon l'invention,
  • en figure 10 un connecteur muni d'un contact de puissance conforme à la figure 9.
The branches can be deformed in parallelogram between their points of connection to the flange and their points of connection to the connecting beam, which allows the catching of a possible misalignment of the element insertable by force relative to the metallized hole of the circuit printed.
Other characteristics and advantages of the invention will appear better on reading the description which will follow in conjunction with the drawings which represent:
  • in FIGS. 1-A and 1-B a perspective view of a retaining and contact element which can be inserted by force according to two alternative embodiments of the invention,
  • in FIG. 2-A, 2-C and 2-D respectively in a half-section front view, an external side view and a bottom view of a force-fit holding and contact element according to the invention,
  • FIG. 2-B is a cross section of the branches of the holding element according to the invention,
  • FIGS. 3-A and 3-B represent the section of the branches inserted in a printed circuit,
  • FIGS. 4 and 5 represent a side view in partial sections of a connector provided with a holding element and a force-insertable contact according to the invention used for termination of ground continuity,
  • in FIG. 6, a perspective view of a power contact comprising a holding and contact element according to a third variant embodiment of the invention,
  • in FIG. 7 a partial section view of a connector provided with a power contact in accordance with FIG. 6,
  • in FIGS. 8A, 8B a sectional view of a connector provided with a two-part power contact comprising a contact element according to the invention,
  • in FIGS. 9 a perspective view of a straight power contact in two parts comprising a contact element according to the invention,
  • in FIG. 10, a connector provided with a power contact in accordance with FIG. 9.

Sur les figures 1-A et 1-B, l'élément de maintien insérable à force est constitué d'une broche, de forme générale cylindrique, désignée par le repère général 1. Cette broche comprend une partie supérieure tubulaire 10, une partie centrale formant collerette 11 et une partie inférieure en forme de fût comportant deux branches 2,3 séparées par une fente 16 et reliées par une poutre terminale 8. La collerette comporte une face inférieure 9 à laquelle sont raccordées les branches 2 et 3, cette surface 9 formant ainsi un socle pour les branches 2 et 3. En figure 1-B, la collerette comporte des pans 13 alors qu'en figure 1-A, la collerette 11 est suivie en direction de la partie supérieure d'une zone indentée 12 la fonction des pans 13 et de la zone indentée sera explicitée en rapport avec les figures 4 et 5.In FIGS. 1-A and 1-B, the force-insertable retaining element is consisting of a spindle, of generally cylindrical shape, designated by the reference general 1. This spindle comprises a tubular upper part 10, a part central flange 11 and a barrel-shaped lower part comprising two branches 2,3 separated by a slot 16 and connected by a terminal beam 8. The collar has a lower face 9 to which the branches 2 and 3, this surface 9 thus forming a base for branches 2 and 3. In FIG. 1-B, the collar has sections 13 whereas in FIG. 1-A, the collar 11 is followed towards the upper part of an indented area 12 the function of sections 13 and the indented area will be explained in relation to the Figures 4 and 5.

Sur la figure 2-A, l'élément 1 est vu de coté et en demi coupe selon un plan vertical passant par son axe longitudinal. On voit sur cette figure que la broche 1 tubulaire est munie d'un alésage 14 débouchant en partie supérieure de la broche, et qu'une fente 16 sépare les branches 2 et 3. Les branches 2 et 3 comportent chacune une surface extérieure 5 et une surface intérieure 6, les branches possèdent une section massive telle que leur élasticité soit réduite au minimum.
La surface extérieure 5 d'au moins l'une des broches présente un profil transversal en arc de cercle de rayon variable en fonction de la position longitudinale de la section considérée, ce rayon variable définissant ainsi pour la branche considérée une zone inférieure de guidage à l'insertion dans un trou 31 d'un circuit imprimé 30, une zone de section élargie d'interférence avec la paroi du trou 31 et une zone supérieure de section réduite de raccordement de la branche avec le socle 9. De façon à réduire encore leur élasticité, les branches sont raccordées, à leur extrémité d'insertion, par une poutre (8) de liaison rigide.On the figure 2-A, the element 1 is seen from the side and in half section along a vertical plane passing through its longitudinal axis. We see in this figure that the tubular spindle 1 is provided with a bore 14 opening into the upper part of the spindle, and that a slot 16 separates the branches 2 and 3. The branches 2 and 3 each have an outer surface 5 and an inner surface 6, the branches have a massive section such that their elasticity is reduced to a minimum.
The external surface 5 of at least one of the pins has a transverse profile in an arc of a circle of variable radius as a function of the longitudinal position of the section considered, this variable radius thus defining for the branch considered a lower guide zone to the insertion into a hole 31 of a printed circuit 30, an enlarged cross-sectional area of interference with the wall of the hole 31 and an upper reduced cross-sectional area of connection of the branch with the base 9. So as to further reduce their elasticity, the branches are connected, at their insertion end, by a rigid connection beam (8).

Les figures 3-A et 3-B montrent l'interférence de la section des branches dans un trou métallisé 31 d'un circuit imprimé, trou métallisé relié de façon connue en soi à une piste métallisée dudit circuit imprimé, respectivement, en figure 3-A dans le cas d'un trou de diamètre minimum et un décalage maximum de l'axe du trou avec l'axe de la broche et, en figure 3-B dans le cas d'un trou de diamètre maximum.
Pour fixer les idées et à titre d'exemple, le diamètre d'un trou métallisé de fixation d'un connecteur, communément de 3 mm peut en fonction des tolérances de fabrication croítre jusqu'à 3,20 mm. La couche de métallisation comprenant typiquement une couche de 25 microns de cuivre recouverte 5 microns d'étain-plomb. Le décalage toléré entre les axes du trou et de l'élément de maintien est de 0,12 mm.
L'élément de maintien correspondant à ce perçage aura des branches dont la zone de section élargie (vue en figure 2-B) définiront un diamètre de 3,25 mm et dont la constitution massive permettra une interférence avec les parois métalliséees d'au minimum de 0,05 mm, pour le trou de diamètre maximum, jusqu'à une interférence de 0,27 mm, pour le trou de diamètre minimum avec décalage maximum. L'écrasement combiné du fût de l'élément de maintien et des parois du trou évite l'arrachement de la couche de métallisation.Figures 3-A and 3-B show the interference of the section of the branches in a metallized hole 31 of a printed circuit, metallized hole connected in a manner known per se to a metallized track of said printed circuit, respectively, in Figure 3 -A in the case of a hole of minimum diameter and a maximum offset of the axis of the hole with the axis of the spindle and, in Figure 3-B in the case of a hole of maximum diameter.
To fix ideas and by way of example, the diameter of a metallized hole for fixing a connector, commonly 3 mm, can, depending on manufacturing tolerances, increase to 3.20 mm. The metallization layer typically comprising a layer of 25 microns of copper covered with 5 microns of tin-lead. The tolerated offset between the axes of the hole and of the holding element is 0.12 mm.
The holding element corresponding to this drilling will have branches whose enlarged cross-sectional area (seen in figure 2-B) will define a diameter of 3.25 mm and whose massive constitution will allow interference with metallized walls at least 0.05 mm, for the maximum diameter hole, up to an interference of 0.27 mm, for the minimum diameter hole with maximum offset. The combined crushing of the barrel of the retaining element and the walls of the hole prevents the plating of the metallization layer.

Les figures 4 et 5 décrivent une application d'un élément de maintien selon l'invention utilisé comme plot de fixation et de connection de masse d'un connecteur électrique sur circuit imprimé.
Le connecteur désigné par le repère général 40 comporte de manière connue un corps isolant 41 supportant des contacts, munis de terminaisons de connexion 42 avec des pistes du circuit imprimé 30, et une enveloppe métallique de blindage constituée d'une coquille avant 43, recouvrant les faces latérales de la partie de réception d'un connecteur complémentaire (non représenté), l'enveloppe métallique étant munie de flancs 44 et de rabats 45, les flancs 44 et les rabats 45 solidarisant l'enveloppe métallique et l'isolant support de contacts.
De tels connecteurs sont par exemple connus sous la dénomination "SUB D".
Dans l'application de la figure 4 selon l'invention, l'élément insérable 1 emprisonne et maintient l'enveloppe métallique 44 et l'isolant 41 entre sa collerette 11 et le bord supérieur rabattu 17 de sa partie supérieure tubulaire 10. La partie supérieure tubulaire peut être munie d'un filetage interne 15 permettant soit la fixation d'un connecteur complémentaire comportant des vis de maintien, soit la fixation d'un moyen de codage.
Dans la variante de la figure 5, l'élément de fixation comporte un moletage 12 inséré à force dans l'isolant 41 du connecteur et la collerette 11 vient en appui contre le bord inférieur de l'isolant 41 du connecteur.Figures 4 and 5 describe an application of a holding element according to the invention used as a fixing and ground connection pad of an electrical connector on a printed circuit.
The connector designated by the general reference 40 comprises in known manner an insulating body 41 supporting contacts, provided with connection terminations 42 with tracks of the printed circuit 30, and a metal shielding envelope constituted by a front shell 43, covering the lateral faces of the receiving part of a complementary connector (not shown), the metal casing being provided with flanks 44 and flaps 45, the flanks 44 and flaps 45 securing the metallic casing and the contact support insulator .
Such connectors are for example known under the name "SUB D".
In the application of FIG. 4 according to the invention, the insertable element 1 traps and maintains the metal casing 44 and the insulation 41 between its collar 11 and the folded upper edge 17 of its tubular upper part 10. The part tubular upper may be provided with an internal thread 15 allowing either the fixing of a complementary connector comprising retaining screws, or the fixing of a coding means.
In the variant of FIG. 5, the fixing element comprises a knurling 12 inserted by force into the insulation 41 of the connector and the collar 11 comes to bear against the lower edge of the insulation 41 of the connector.

Le connecteur ainsi muni de ses plots de fixation est alors inséré sur le circuit imprimé, les plots de fixation assurant une continuité de masse entre la coquille et le circuit imprimé.The connector thus provided with its fixing studs is then inserted on the circuit printed, the mounting pads ensuring continuity of mass between the shell and the printed circuit.

En figure 6 et 7 sont décrits respectivement un contact de puissance de type coudé et un élément de connecteur recevant ce contact. Le contact de puissance est construit autour d'un bloc central 53. Le bloc central 53 est muni sur une première face d'un embout 52 sur lequel se fixe une terminaison 50 de raccordement à un contact porté par un connecteur complémentaire. La terminaison de raccordement 50 qui comporte en partie arrière un alésage 51 est insérée par l'avant dans un alvéole d'un isolant 61 support de contacts. Le bloc central 53 est inséré par l'arrière dans l'alvéole de l'isolant de manière à ce que l'embout 52 s'encastre dans l'alésage 51 de la terminaison 50 emprisonnant ainsi l'isolant 61. Le bloc central comporte par ailleurs sur une seconde face un alésage 54 recevant la partie tubulaire 10 d'un élément 1. Le contact de puissance ainsi constitué est adapté à des passages de courants de 30 Ampères sans nécessiter de souder le contact sur le circuit imprimé et, de par sa constitution, peut réaliser le maintien du connecteur sur le circuit imprimé. La fabrication d'un connecteur à contacts droits est possible en omettant le bloc central et en encastrant simplement la partie arrière tubulaire 10 de l'élément insérable 1 dans l'alésage 51 de la partie de raccordement.In FIGS. 6 and 7 are described respectively a power contact of angled type and a connector element receiving this contact. The contact of power is built around a central block 53. The central block 53 is provided on a first face of a tip 52 on which is fixed a termination 50 of connection to a contact carried by an additional connector. The connection termination 50 which has a bore 51 in the rear inserted from the front into a cell of an insulator 61 contact support. The block central 53 is inserted from the rear into the cell of the insulation so that the tip 52 is embedded in the bore 51 of the termination 50 thus trapping the insulator 61. The central block also comprises on a second face a bore 54 receiving the tubular part 10 of an element 1. The power contact thus made up is suitable for 30 Amp current flows without requiring solder the contact on the printed circuit and, by its constitution, can realize the maintaining the connector on the printed circuit. The manufacture of a connector straight contacts is possible by omitting the central block and simply embedding the tubular rear part 10 of the insertable element 1 in the bore 51 of the part connection.

Les figures 8 A, 8 B, 9 et 10 présentent différents modes de réalisation de contacts de puissance et de connecteurs les recevant. Sur les figures 8A et 8B il s'agit d'un connecteur de type coudé pour lequel l'élément de contact 1 se raccorde à une terminaison de raccordement avec un contact complémentaire d'un connecteur non représenté. En figure 8 A les éléments constitutifs bloc isolant 70, terminaison de raccordement 71 et élément de contact 1 sont représentés séparés. Pour le raccordement de la terminaison de contact 71 avec le contact 1, un alésage est réalisé dans la partie 10 de l'élément 1, alésage dans lequel la partie arrière 74 de la terminaison de raccordement 71 est insérée à force. Le maintien du contact de puissance dans l'isolant est réalisé par la partie avant de la terminaison 71. Pour réaliser le contact de puissance utilisé dans le connecteur de la figure 10, c'est la partie arrière 10 de l'élément de contact 1 qui s'insère à force dans un alésage 75 de la terminaison de contact 71. Pour son insertion sur circuit imprimé, l'élément isolant 70 peut être muni de pions de centrage et de fixation 72, 73.Figures 8 A, 8 B, 9 and 10 show different embodiments of power contacts and connectors receiving them. In Figures 8A and 8B it it is a bent type connector for which the contact element 1 is connects to a connection termination with an additional contact a connector not shown. In Figure 8 A the building blocks insulation 70, connection termination 71 and contact element 1 are shown separate. For the connection of contact termination 71 with the contact 1, a bore is made in part 10 of the element 1, bore in which the rear part 74 of the connection termination 71 is forcibly inserted. The power contact in the insulation is maintained by the front part of termination 71. To make the power contact used in the connector of FIG. 10, it is the rear part 10 of the contact element 1 which is forced into a bore 75 of the contact termination 71. For its insertion on a printed circuit, the insulating element 70 can be provided with pins centering and fixing 72, 73.

La réalisation d'un élément insérable à force selon l'invention peut être avantageusement obtenue par une première étape de décolletage d'un barreau cylindrique pour réaliser la forme externe de la broche, une deuxième étape d'alésage axial de la broche et une troisième étape de fraisage des faces latérales des branches de la broche, cette dernière étape créant la fente 16 séparant les branches 2, 3. Cette étape de fraisage peut être réalisée au moyen de fraises droites ou de fraises de forme pour donner respectivement soit des faces latérales 7 planes parallèles soit des faces latérales inclinées ou de profil quelconque. Les parois internes 6 des branches obtenues par l'étape d'alésage sont avantageusement parallèles sur la longueur des branches et munies d'un profil transversal en arc de cercle de rayon constant sur la longueur des branches pour éviter toute variation de la distance entre la collerette et la zone de contact avec le circuit imprimé lors de l'insertion à force et augmenter la rigidité des branches. En variante et pour permettre un fléchissement des branches, il est possible de diminuer la rigidité de la poutre 8 reliant les branches, pour celà cette dernière peut être percée d'un trou 18 dans sa partie centrale comme représenté en figures 9 A, 9 B.The production of a force-insertable element according to the invention can be advantageously obtained by a first step of bar turning cylindrical to achieve the external shape of the spindle, a second step axial bore of the spindle and a third step of milling the side faces branches of the spindle, this last step creating the slot 16 separating the branches 2, 3. This milling step can be carried out using strawberries straight or strawberry shape to give respectively either side faces 7 parallel planes, either inclined side faces or any profile. The internal walls 6 of the branches obtained by the boring step are advantageously parallel along the length of the branches and provided with a profile transverse in a circular arc of constant radius along the length of the branches for avoid any variation in the distance between the flange and the contact area with the printed circuit during the force insertion and increase the rigidity of the branches. In variant and to allow a bending of the branches, it is possible to reduce the rigidity of the beam 8 connecting the branches, for the latter can be drilled with a hole 18 in its central part as shown in figures 9 A, 9 B.

Claims (9)

  1. A forced-insertion retention and electrical contact component (1) consisting of a pin equipped with a slot in a portion of the barrel comprising the said pin, the slot defining the longitudinally arc-shaped legs (2,3), characterised by the fact that at least one of the legs defined by this slot possesses a massive section (4) whose outside wall (5) has a transverse profile of an arc of a circle of a radius varying according to the longitudinal position of the section under consideration.
  2. A forced-insertion component according to Claim 1, characterised by the fact that the slotted portion is bounded at its upper end by a rigid base (9) and at its lower end by a connecting bar (8), the bar (8) and the base (9) being located the ends of the barrel.
  3. A forced-insertion component according to Claim 2, characterised by the fact that the base (9) comprises the lower face of a collar extended by a supplementary consolidating connection piece (10).
  4. A forced insertion component according to a Claim from 1 to 3, characterised by the fact that the internal walls (6) of the legs extend in a direction parallel to the axis of the barrel.
  5. A forced-insertion component according to Claim 4, characterised by the fact that the legs each contain a internal wall (6) with a transverse profile of an arc of a circle of constant radius on the length of the legs.
  6. A forced-insertion component according to one of the Claims from 2 to 6, characterised by the fact that the legs comprise flat side walls (7).
  7. A forced-insertion component according to one of the Claims from 2 to 6, characterised by the fact that the connecting bar (8) is pierced in its central portion.
  8. Printed circuit connector component (60) comprising an insulator (61) to receive electrical contacts, the said electrical contacts being equipped, on the one hand, with a connection termination (50) for connection to a supplementary connector and on the other hand a connection termination (56) for connection to a printed circuit, characterised by the fact that at least one of the said electrical contacts comprises a forced-insertion component according to one of the Claims from 1 to 7 in order to create a power connection.
  9. A connector component of printed circuit (40) comprising an insulator (41) to receive electrical contacts, characterised by the fact that the said connector component comprises an armoured casing (43,44,45) and a forced-insertion component (1) according to one of the Claims from 1 to 7 to create a ground connection between the armoured casing (42) and a printed circuit metallized hole.
EP96117086A 1995-11-07 1996-10-24 Retaining and contact element and connector having such element Expired - Lifetime EP0773609B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9513149 1995-11-07
FR9513149A FR2740913B1 (en) 1995-11-07 1995-11-07 HOLDING AND CONTACT ELEMENT AND CONNECTOR COMPRISING SAME

Publications (2)

Publication Number Publication Date
EP0773609A1 EP0773609A1 (en) 1997-05-14
EP0773609B1 true EP0773609B1 (en) 2001-04-04

Family

ID=9484304

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96117086A Expired - Lifetime EP0773609B1 (en) 1995-11-07 1996-10-24 Retaining and contact element and connector having such element

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US (1) US5816855A (en)
EP (1) EP0773609B1 (en)
DE (1) DE69612352T2 (en)
ES (1) ES2155916T3 (en)
FR (1) FR2740913B1 (en)

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FR2772521B1 (en) * 1997-12-17 2000-02-11 Framatome Connectors France CONNECTION COUPLER FOR PRINTED CIRCUIT BOARD
DE19834478A1 (en) * 1998-07-31 2000-02-17 Itt Mfg Enterprises Inc Connectors
FR2792121B1 (en) * 1999-03-24 2001-06-08 Framatome Connectors France CONNECTOR WITH SHIELD SKIRT
DE19945310C2 (en) * 1999-09-22 2001-11-08 Itt Mfg Enterprises Inc Connectors
DE19945705A1 (en) * 1999-09-23 2001-03-29 Harting Kgaa Connectors
DE29920228U1 (en) * 1999-11-17 2001-03-29 Weidmueller Interface PCB connectors
ES2223200B1 (en) * 2001-06-14 2005-12-16 Biurtu, S.A. NO WELDING CONNECTION SYSTEM FOR HEATING PLATES.
AT411514B (en) * 2001-07-27 2004-01-26 Siemens Ag Oesterreich EQUIPMENT DESIGN
DE20113884U1 (en) * 2001-08-22 2003-01-02 Itt Mfg Enterprises Inc Electrical connector for a printed circuit board
US6616459B2 (en) 2001-08-24 2003-09-09 Adc Telecommunications, Inc. Card edge contact including compliant end
US6511330B1 (en) 2001-08-24 2003-01-28 Adc Telecommunications, Inc. Interconnect module
US6830465B2 (en) 2001-08-24 2004-12-14 Adc Telecommunications, Inc. Interconnect chassis and module
JP6669371B1 (en) 2019-01-22 2020-03-18 Ｎｅｃプラットフォームズ株式会社 Electronic equipment cover and electronic equipment

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Also Published As

Publication number Publication date
FR2740913B1 (en) 1997-12-05
DE69612352T2 (en) 2001-09-20
US5816855A (en) 1998-10-06
DE69612352D1 (en) 2001-05-10
FR2740913A1 (en) 1997-05-09
ES2155916T3 (en) 2001-06-01
EP0773609A1 (en) 1997-05-14

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