EP0907220B1 - Electric contact element for connecting terminals with printed circuits - Google Patents

Electric contact element for connecting terminals with printed circuits Download PDF

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Publication number
EP0907220B1
EP0907220B1 EP98401653A EP98401653A EP0907220B1 EP 0907220 B1 EP0907220 B1 EP 0907220B1 EP 98401653 A EP98401653 A EP 98401653A EP 98401653 A EP98401653 A EP 98401653A EP 0907220 B1 EP0907220 B1 EP 0907220B1
Authority
EP
European Patent Office
Prior art keywords
faces
circuit
printed circuit
contact element
shaped
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
EP98401653A
Other languages
German (de)
French (fr)
Other versions
EP0907220A1 (en
Inventor
Georges Astic
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.)
Noalia Solutions SA
Original Assignee
Crouzet Appliance Controls 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 Crouzet Appliance Controls SA filed Critical Crouzet Appliance Controls SA
Publication of EP0907220A1 publication Critical patent/EP0907220A1/en
Application granted granted Critical
Publication of EP0907220B1 publication Critical patent/EP0907220B1/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
    • 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
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
    • H01R12/58—Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/16—Fastening of connecting parts to base or case; Insulating connecting parts from base or case

Definitions

  • the present invention relates to an electrical contact member for the connection of electrical connection lugs to a printed circuit.
  • this connection is achieved by depositing a conductive cream at the location where the pod passes through the circuit, in contact with an electrically conductive track.
  • the cream is then heated by microflam or hot air, which causes its melting and then hardening on cooling.
  • the present invention aims to overcome these disadvantages.
  • the subject of the invention is an electrical contact member for the connection to a printed circuit of a connection lug, characterized in that it comprises a metal body composed of a set of lateral faces delimiting a substantially parallelepipedal space, said body being arranged to be housed in a hole of corresponding shape pierced in the circuit, and protruding extensions of said faces for crimping said member in said orifice, at least one of two of said faces facing each other being shaped so as to approach the other in its central part so as to pinch by elastic deformation said lug engaged in said space.
  • said faces facing each other are the large faces of the parallelepiped.
  • At least one of said extensions is welded to a conductive track of said printed circuit.
  • the main advantage of the invention lies in the fact that the contact member according to the invention can be easily introduced into the hole provided for this purpose. effect, then crimped and finally welded to the wave at the same time as the components mounted on the printed circuit. The crimping and welding operations are performed at the same time for all the contact members of the circuit. Then, the lug is engaged in the central space and the connection is carried out simply by dry elastic contact.
  • the contact member 1 is made in one piece of metal sheet, for example of the order of 0.2 mm thick.
  • It is formed essentially of a parallelepipedal body 2 delimited by two small end faces 3 and 3 ', and two large longitudinal faces 4 and 4'.
  • the height h of the body 2 is slightly less than the thickness e of the printed circuit 5 for which the member 1 is intended.
  • the large faces 4 and 4 'of the body 2 are not flat, but are gradually approaching each other upwards, in their longitudinally median parts, 6 and 6' respectively. Each of these faces thus forms a kind of vault whose concavity is oriented towards the outside of the body 2.
  • each major face Along the lower edge of each major face, a longitudinal projection is cut and folded substantially perpendicular to this face towards the outside of the body, to form a flap 7 abutment. We will see below the usefulness of these flaps.
  • a crimping tab 8 allows the assembly of the member 1 on the printed circuit 5.
  • the member 1 is introduced from below into a hole 9 drilled in the circuit 5, until the flap 7 abuts against the lower face 10 of the circuit.
  • the ends of the lugs 8, which protrude from the upper face 11 of the circuit, are then folded against this face so as to crimp the member 1 in the hole 9. It will be observed that, in this case, the lugs 8 are folded over a conductive track 12 of the circuit 5.
  • This assembly of the members 1 on the circuit 5 is performed in the context of the introduction of the electronic components on this circuit.
  • a cover 13 is then introduced into the central space of the member 1 so that its end surface 14 is flush with the surface 11 of the circuit.
  • the circuit board 5 thus equipped is passed to the wave soldering machine to weld the components and the members 1.
  • the cover prevents the molten metal from rising in the hole 9. It is seen in the figures a weld 15 between a leg 8 and a conductive track 12, after removing the cover 13.
  • Figures 2 and 3 show a lug 16 engaged in a connecting member according to the invention.
  • the pod elastically spreads the vaulted portions 6 and 6 'of the faces 4 and 4'. Because the end portions of these faces are locked longitudinally and resting against the flanks of the hole 9, there is an arching of the arch portions 6 and 6 ', which ensures a firm contact between the lug and the lug. liaison body.

Description

La présente invention concerne un organe de contact électrique pour la liaison de cosses de connexion électrique à un circuit imprimé.The present invention relates to an electrical contact member for the connection of electrical connection lugs to a printed circuit.

Le document DE-A-1 590 068 décrit un tel organe de contact.DE-A-1,590,068 describes such a contact member.

Actuellement, cette liaison est réalisée par le dépôt d'une crème conductrice à l'emplacement où la cosse traverse le circuit, au contact d'une piste électriquement conductrice. La crème est ensuite chauffée par microflamme ou par air chaud, ce qui provoque sa fusion, puis son durcissement au refroidissement.Currently, this connection is achieved by depositing a conductive cream at the location where the pod passes through the circuit, in contact with an electrically conductive track. The cream is then heated by microflam or hot air, which causes its melting and then hardening on cooling.

Cette succession d'étapes est délicate à réaliser convenablement, et son coût est donc élevé.This succession of steps is difficult to achieve properly, and its cost is high.

La présente invention vise à pallier ces inconvénients.The present invention aims to overcome these disadvantages.

A cet effet, l'invention a pour objet un organe de contact électrique pour la liaison à un circuit imprimé d'une cosse de connexion, caractérisé par le fait qu'il comprend
un corps métallique composé d'un ensemble de faces latérales délimitant un espace sensiblement parallélépipédique, ledit corps étant agencé pour être logé dans un trou de forme correspondante percé dans le circuit,
et des prolongements en saillie desdites faces pour sertir ledit organe dans ledit orifice,
au moins une de deux desdites faces en vis-à-vis étant conformée de manière à se rapprocher de l'autre dans sa partie centrale de manière à pincer par déformation élastique ladite cosse engagée dans ledit espace.For this purpose, the subject of the invention is an electrical contact member for the connection to a printed circuit of a connection lug, characterized in that it comprises
a metal body composed of a set of lateral faces delimiting a substantially parallelepipedal space, said body being arranged to be housed in a hole of corresponding shape pierced in the circuit,
and protruding extensions of said faces for crimping said member in said orifice,
at least one of two of said faces facing each other being shaped so as to approach the other in its central part so as to pinch by elastic deformation said lug engaged in said space.

Dans un mode de réalisation particulier de l'invention, lesdites faces en vis-à-vis sont les grandes faces du parallélépipède.In a particular embodiment of the invention, said faces facing each other are the large faces of the parallelepiped.

Avantageusement, au moins un desdits prolongements est soudé sur une piste conductrice dudit circuit imprimé.Advantageously, at least one of said extensions is welded to a conductive track of said printed circuit.

Le principal avantage de l'invention réside dans le fait que l'organe de contact selon l'invention peut être aisément introduit dans le trou prévu à cet effet, puis serti et enfin soudé à la vague en même temps que les composants montés sur le circuit imprimé. Les opération de sertissage et de soudage sont réalisées en même temps pour tous les organes de contact du circuit. Ensuite, la cosse est engagée dans l'espace central et la liaison s'effectue simplement par contact élastique à sec.The main advantage of the invention lies in the fact that the contact member according to the invention can be easily introduced into the hole provided for this purpose. effect, then crimped and finally welded to the wave at the same time as the components mounted on the printed circuit. The crimping and welding operations are performed at the same time for all the contact members of the circuit. Then, the lug is engaged in the central space and the connection is carried out simply by dry elastic contact.

On décrira maintenant, à titre d'exemple non limitatif, un mode de réalisation particulier de l'invention, en référence aux dessins schématiques annexés dans lesquels:

  • la figure 1 est une vue en perspective d'un organe de contact selon l'invention;
  • la figure 2 est une vue en coupe transversale d'un tel organe monté sur un circuit imprimé avec une cosse en place;
  • la figure 3 est une vue partielle en coupe longitudinale similaire à la figure 2; et
  • la figure 4 est également une vue partielle en coupe longitudinale lors du montage de l'organe de contact sur le circuit imprimé.
A particular embodiment of the invention will now be described, by way of nonlimiting example, with reference to the appended diagrammatic drawings in which:
  • Figure 1 is a perspective view of a contact member according to the invention;
  • Figure 2 is a cross-sectional view of such a member mounted on a printed circuit with a lug in place;
  • Figure 3 is a partial view in longitudinal section similar to Figure 2; and
  • Figure 4 is also a partial view in longitudinal section during mounting of the contact member on the printed circuit.

L'organe de contact 1 est réalisé d'une seule pièce en feuillard métallique, par exemple de l'ordre de 0,2 mm d'épaisseur.The contact member 1 is made in one piece of metal sheet, for example of the order of 0.2 mm thick.

Il est formé pour l'essentiel d'un corps parallélépipédique 2 délimité par deux petites faces d'extrémité 3 et 3', et deux grandes faces longitudinales 4 et 4'. La hauteur h du corps 2 est légèrement inférieure à l'épaisseur e du circuit imprimé 5 auquel est destiné l'organe 1.It is formed essentially of a parallelepipedal body 2 delimited by two small end faces 3 and 3 ', and two large longitudinal faces 4 and 4'. The height h of the body 2 is slightly less than the thickness e of the printed circuit 5 for which the member 1 is intended.

Les grandes faces 4 et 4' du corps 2 ne sont pas planes, mais se rapprochent progressivement l'une de l'autre vers le haut, dans leurs parties longitudinalement médianes, 6 et 6' respectivement. Chacune de ces faces forme ainsi une sorte de voûte dont la concavité est orienté vers l'extérieur du corps 2.The large faces 4 and 4 'of the body 2 are not flat, but are gradually approaching each other upwards, in their longitudinally median parts, 6 and 6' respectively. Each of these faces thus forms a kind of vault whose concavity is oriented towards the outside of the body 2.

Le long du bord inférieur de chaque grande face, une saillie longitudinale est découpée et rabattue sensiblement perpendiculairement à cette face vers l'extérieur du corps, pour former un rabat 7 de butée. On verra ci-après l'utilité de ces rabats.Along the lower edge of each major face, a longitudinal projection is cut and folded substantially perpendicular to this face towards the outside of the body, to form a flap 7 abutment. We will see below the usefulness of these flaps.

De même, le long du bord supérieur de chaque petite face du corps 2, une patte de sertissage 8 permet le montage de l'organe 1 sur le circuit imprimé 5. A cet effet, l'organe 1 est introduit par en-dessous dans un trou 9 percé dans le circuit 5, jusqu'à ce que le rabat 7 vienne en butée contre la face inférieure 10 du circuit. Les extrémités des pattes 8, qui dépassent de la face supérieure 11 du circuit, sont alors repliées contre cette face de manière à sertir l'organe 1 dans le trou 9. On observera que, dans le cas présent, les pattes 8 sont repliées sur une piste conductrice 12 du circuit 5.Similarly, along the upper edge of each small face of the body 2, a crimping tab 8 allows the assembly of the member 1 on the printed circuit 5. For this purpose, the member 1 is introduced from below into a hole 9 drilled in the circuit 5, until the flap 7 abuts against the lower face 10 of the circuit. The ends of the lugs 8, which protrude from the upper face 11 of the circuit, are then folded against this face so as to crimp the member 1 in the hole 9. It will be observed that, in this case, the lugs 8 are folded over a conductive track 12 of the circuit 5.

Ce montage des organes 1 sur le circuit 5 s'effectue dans le cadre de la mise en place des composants électroniques sur ce circuit. Un cache 13 est alors introduit dans l'espace central de l'organe 1 de manière que sa surface d'extrémité 14 affleure la surface 11 du circuit.This assembly of the members 1 on the circuit 5 is performed in the context of the introduction of the electronic components on this circuit. A cover 13 is then introduced into the central space of the member 1 so that its end surface 14 is flush with the surface 11 of the circuit.

Le circuit imprimé 5 ainsi équipé est passé à la machine de soudage à la vague pour souder les composants et les organes 1. Le cache empêche la remontée du métal en fusion dans le trou 9. On voit sur les figures une soudure 15 entre une patte 8 et une piste conductrice 12, après retrait du cache 13.The circuit board 5 thus equipped is passed to the wave soldering machine to weld the components and the members 1. The cover prevents the molten metal from rising in the hole 9. It is seen in the figures a weld 15 between a leg 8 and a conductive track 12, after removing the cover 13.

Les figures 2 et 3 montrent une cosse 16 engagée dans un organe de liaison selon l'invention. La cosse écarte élastiquement les parties en voûte 6 et 6' des faces 4 et 4'. Du fait que les parties d'extrémité de ces faces sont bloquées longitudinalement et en appui contre les flancs du trou 9, il se produit un arc-boutement des parties en voûte 6 et 6', qui assure un contact ferme entre la cosse et l'organe de liaison.Figures 2 and 3 show a lug 16 engaged in a connecting member according to the invention. The pod elastically spreads the vaulted portions 6 and 6 'of the faces 4 and 4'. Because the end portions of these faces are locked longitudinally and resting against the flanks of the hole 9, there is an arching of the arch portions 6 and 6 ', which ensures a firm contact between the lug and the lug. liaison body.

Claims (4)

  1. Combination of an electrical contact element and a printed circuit (5) for linking to a connection terminal (16), comprising
    a metal body (2) made up of an assembly of lateral faces (3, 3', 4, 4') that delimit a substantially parallelepipedal space, said body being arranged to as to be accommodated in a hole (9) with a matching shape made in the circuit,
    and extensions (7, 7', 8, 8') that project from said faces to hold said element in said orifice,
    at least one of said two opposing faces being shaped so as to come closer to the other at the centre (6, 6') so as to pinch said terminal inserted in said space by elastic deformation,
    characterised in that the height of the body is less than the thickness of the printed circuit.
  2. Combination according to claim 1, characterised in that said face shaped so as to come closer to the other face is shaped like an arch.
  3. Combination according to either one of the claims 1 or 2, in which said opposing faces are the large faces (4, 4') of the parallelepiped.
  4. Combination according to any one of the claims from 1 to 3, in which at least one of said extensions (8) is welded to a conductor of said printed circuit.
EP98401653A 1997-07-02 1998-07-02 Electric contact element for connecting terminals with printed circuits Expired - Lifetime EP0907220B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9708330A FR2768265B1 (en) 1997-07-02 1997-07-02 ELECTRIC CONTACT DEVICE FOR CONNECTING TERMINALS OF CONNECTION TO A PRINTED CIRCUIT
FR9708330 1997-07-02

Publications (2)

Publication Number Publication Date
EP0907220A1 EP0907220A1 (en) 1999-04-07
EP0907220B1 true EP0907220B1 (en) 2006-08-23

Family

ID=9508733

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98401653A Expired - Lifetime EP0907220B1 (en) 1997-07-02 1998-07-02 Electric contact element for connecting terminals with printed circuits

Country Status (3)

Country Link
EP (1) EP0907220B1 (en)
DE (1) DE69835647T2 (en)
FR (1) FR2768265B1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3374979A (en) * 1965-12-10 1968-03-26 Amp Inc Fastener
FR2255779A1 (en) * 1973-12-19 1975-07-18 Labinal Printed circuit with connector elements - has support plate for elements parallel to circuit board
FR2506526A1 (en) * 1981-05-21 1982-11-26 Dav Ind Female printed circuit board edge connector clip - has reinforcing strips pressed from single metal piece and gives better electrical contact

Also Published As

Publication number Publication date
EP0907220A1 (en) 1999-04-07
FR2768265B1 (en) 2004-07-30
DE69835647D1 (en) 2006-10-05
FR2768265A1 (en) 1999-03-12
DE69835647T2 (en) 2007-07-19

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