EP0163567A1 - Contact for a printed circuit board - Google Patents

Contact for a printed circuit board Download PDF

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Publication number
EP0163567A1
EP0163567A1 EP85400910A EP85400910A EP0163567A1 EP 0163567 A1 EP0163567 A1 EP 0163567A1 EP 85400910 A EP85400910 A EP 85400910A EP 85400910 A EP85400910 A EP 85400910A EP 0163567 A1 EP0163567 A1 EP 0163567A1
Authority
EP
European Patent Office
Prior art keywords
contact
card
branch
protuberance
slot
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP85400910A
Other languages
German (de)
French (fr)
Inventor
François Man
Philippe Egon
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.)
Francelco SA
Original Assignee
Francelco 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 Francelco SA filed Critical Francelco SA
Publication of EP0163567A1 publication Critical patent/EP0163567A1/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • 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
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/721—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures cooperating directly with the edge of the rigid printed circuits

Definitions

  • the present invention relates to a contact for printed circuit boards.
  • the electrical connections between the conductive tracks printed on the cards and the assembly to receive them are made by means of an insulating contactor box having a slot for receiving the card comprising protruding lamellar electrical contacts.
  • each contact takes the form of a loop, substantially a hairpin, one branch of which, to which the electrical conductor is connected, is immobilized in the insulating housing while the other projects into the slot of said housing, the two branches of the contact extending opposite the orifice of said slot.
  • the present invention which overcomes these drawbacks, is remarkable in that the movable branch of the contact has two protuberances, of which the one located after the first, relative to the direction of insertion of the card, projects into the slot of the housing, said first protuberance coming into contact with the corresponding conductive track of the card substantially at the moment when the chamfer of this last encounter and pushes the second protuberance.
  • 1 is an insulating casing having a slot 2 for inserting a card 3, which is usual.
  • each contact is constituted by a folded blade in the shape of a hairpin therefore having a loop 4 and two branches 5 and 6.
  • the branch 5 has a known locking tab 7, making it possible to immobilize the contact in the boot maker 1.
  • the branch 6 has two protrusions 8 and 9.
  • each contact has two protrusions 9 each located at the end of an IO arm cut out from the contact and extending substantially along the extension of the branch 8.
  • the contact of the invention makes it possible to dissociate two functions which, until now, were ensured by the same body, namely: that electrical and that mechanical.
  • the pressure necessary to maintain the card (mechanical function) is provided by the protuberance 8, while that required for electrical contact is provided by the protuberances 9.
  • the protrusions 9, projecting are optional; they can be limited to the appropriate bending of the corresponding IO arm.
  • the contact can have a single middle arm 10a.

Abstract

The contact is of the type of those formed by a conductive blade bent into the form of a hairpin, one branch of which is connected to the conductor and immobilised in an insulating housing while the other projects into the usual slot of the housing, characterised in that the movable branch (6) exhibits two protruberances (8-9) of which that one (8) situated after the first one (9), with respect to the direction of insertion of the board (3), projects into the slot (2) of the insulating housing (1) while the said first one (9) is situated, in the absence of a board, set back with respect to the plane occupied by the active face of the board on inserting it. (Figure 2 of the drawings). <IMAGE>

Description

La présente invention est relative à un contact pour des cartes à circuits imprimés.The present invention relates to a contact for printed circuit boards.

En l'état actuel de la technique, les connexions électriques entre les pistes conductrices imprimées sur les cartes et l'ensemble devant les recevoir s'effectuent par l'entremise d'un boîtier contacteur isolant présentant une fente de réception de la carte comportant des contacts électriques lamellaires en saillie.In the current state of the art, the electrical connections between the conductive tracks printed on the cards and the assembly to receive them are made by means of an insulating contactor box having a slot for receiving the card comprising protruding lamellar electrical contacts.

Selon une forme de réalisation connue, chaque contact affecte la forme d'une boucle, sensiblement en épingle à cheveux, dont une branche, à laquelle est raccordé le conducteur électrique, est immobilisée dans le boîtier isolant tandis que l'autre fait saillie dans la fente dudit boîtier, les deux branches du contact s'étendant à l'opposé de l'orifice de ladite fente.According to a known embodiment, each contact takes the form of a loop, substantially a hairpin, one branch of which, to which the electrical conductor is connected, is immobilized in the insulating housing while the other projects into the slot of said housing, the two branches of the contact extending opposite the orifice of said slot.

Lorsqu'on introduit la carte dans la fente précitée, son chanfrein extrême frotte contre le contact et ce frottement altère fortement l'état de surface dudit contact qui, à son tour, en frottant contre la piste correspondante, détériore cette dernière.When the card is inserted into the aforementioned slot, its extreme chamfer rubs against the contact and this friction greatly alters the surface condition of said contact which, in turn, by rubbing against the corresponding track, deteriorates the latter.

La présente invention qui remédie à ces inconvénients, est remarquable en ce que la branche mobile du contact présente deux protubérances, dont celle située après la première, par rapport au sens d'enfoncement de la carte,fait saillie dans la fente du boîtier, ladite première protubérance venant en contact avec la piste conductrice correspondante de la carte sensiblement au moment où le chanfrein de cette dernière rencontre et repousse la seconde protubérance.The present invention which overcomes these drawbacks, is remarkable in that the movable branch of the contact has two protuberances, of which the one located after the first, relative to the direction of insertion of the card, projects into the slot of the housing, said first protuberance coming into contact with the corresponding conductive track of the card substantially at the moment when the chamfer of this last encounter and pushes the second protuberance.

L'invention sera mieux comprise par la description qui va suivre, faite en se référant aux dessins annexés à titre d'exemple indicatif seulement , sur lesquels :

  • La figure 1 est une vue en perspective d'un contact conforme à l'invention ;
  • Les figures 2,3 et 4 sont des vues en coupe montrant l'introduction d'une carte dans un boîtier connecteur comportant le contact de l'invention.
  • La figure 5 est une vue en perspective analogue à la figure 1 montrant une variante de réalisation.
The invention will be better understood from the description which follows, made with reference to the accompanying drawings by way of indicative example only, in which:
  • Figure 1 is a perspective view of a contact according to the invention;
  • Figures 2,3 and 4 are sectional views showing the introduction of a card into a connector housing comprising the contact of the invention.
  • Figure 5 is a perspective view similar to Figure 1 showing an alternative embodiment.

En se reportant aux dessins, on voit que 1 est un boîtier isolant présentant une fente 2 d'introduction d'une carte 3, usuelle.Referring to the drawings, it can be seen that 1 is an insulating casing having a slot 2 for inserting a card 3, which is usual.

De la façon connue, chaque contact est constitué par une lame pliée en forme d'épingle à cheveux présentant donc une boucle 4 et deux branches 5 et 6. La branche 5 présente une patte 7 de verrouillage connue, permettant d'immobiliser le contact dans le bottier 1.In known manner, each contact is constituted by a folded blade in the shape of a hairpin therefore having a loop 4 and two branches 5 and 6. The branch 5 has a known locking tab 7, making it possible to immobilize the contact in the boot maker 1.

Selon l'invention, la branche 6 comporte deux protubérances 8 et 9.According to the invention, the branch 6 has two protrusions 8 and 9.

En position de repos, c'est-à-dire lorsque la carte 3 n'est pas introduite dans la fente 2, la protubérance 8 fait saillie dans ladite fente tandis que celle 9 est en retrait (figure 2).In the rest position, that is to say when the card 3 is not inserted into the slot 2, the protuberance 8 protrudes into said slot while that 9 is recessed (Figure 2).

Selon un mode de réalisation ( figure 1), chaque contact présente deux protubérances 9 situées chacune à l'extrémité d'un bras IO découpé dans le contact et s'étendant sensiblement selon le prolongement de la branche 8.According to one embodiment (FIG. 1), each contact has two protrusions 9 each located at the end of an IO arm cut out from the contact and extending substantially along the extension of the branch 8.

Comme montré sur la figure 1, on voit que lorsqu'on introduit la carte 3 dans la fente 2, les protubérances 9 sont en retrait par rapport à la face 3a de la carte et que, de cette façon, le chanfrein 3b de celle-ci ne risque pas d'entrer en contact avec lesdites protubérances.As shown in FIG. 1, it can be seen that when the card 3 is inserted into the slot 2, the protrusions 9 are set back relative to the face 3a of the card and that, in this way, the chamfer 3b of the latter there is no risk of coming into contact with said protuberances.

Lorsque le chanfrein 3b rencontre la protubérance 8, la branche 6 pivote selon la flèche F1 ( figure 3).Cette action a pour effet de faire pivoter dans le même sens les protubérances 9 qui s'appliquent alors contre la piste conductrice 11 de la carte et y restent appliquées.When the chamfer 3b meets the protuberance 8, the branch 6 pivots according to the arrow F1 (FIG. 3). This action has the effect of pivoting in the same direction the protrusions 9 which then apply against the conductive track 11 of the card and remain applied there.

Le contact de l'invention permet de dissocier deux fonctions qui, jusqu'à présent, étaient assurées par le même organe, à savoir : celle électrique et celle mécanique.The contact of the invention makes it possible to dissociate two functions which, until now, were ensured by the same body, namely: that electrical and that mechanical.

Selon l'invention, la pression nécessaire au maintien de la carte (fonction mécanique) est assurée par la protubérance 8, tandis que celle nécessaire au contact électrique est assurée par les protubérances 9.According to the invention, the pressure necessary to maintain the card (mechanical function) is provided by the protuberance 8, while that required for electrical contact is provided by the protuberances 9.

De ce fait, on comprend que par un cambrage judicieux de la branche 6 et des bras 10, il est possible de donner à ces deux pressions des valeurs différentes.Therefore, we understand that by a judicious arching of branch 6 and arms 10, it is possible to give these two pressures different values.

Par ailleurs, il importe peu que les frottements répétés du chanfrein 3b altèrent l'état de surface de la protubérance 8 puisque celle-ci n'est jamais en contact avec la piste conductrice.Furthermore, it does not matter that the repeated friction of the chamfer 3b alter the surface condition of the protuberance 8 since the latter is never in contact with the conductive track.

Bien entendu, la présente invention ne se limite pas au mode de réalisation décrit et représenté mais s'étend, au contraire, à toutes variantes de formes et dimensions.Of course, the present invention is not limited to the embodiment described and shown but extends, on the contrary, to all variants of shapes and dimensions.

C'est ainsi, entre autres, que les protubérances 9, en saillie, sont facultatives; elles peuvent être limitées au cambrage approprié du bras IO correspondant.Thus, among others, the protrusions 9, projecting, are optional; they can be limited to the appropriate bending of the corresponding IO arm.

C'est ainsi encore que, tel que montré sur la figure 5, le contact peut présenter un seul bras 10a médian.It is thus also that, as shown in FIG. 5, the contact can have a single middle arm 10a.

Claims (5)

1-Cohtact pour cartes à circuits imprimés du genre de ceux constituée par une lame conductrice pliée en forme d'épingle à cheveux dont une branche, reliée au conducteur, est immobilisée dans un boitier isolant tandis que l'autre fait saillie dans la fente uusuelle du boîtier, caractérisé en ce que la branche (6), mobile, présente deux protubérances (8-9) dont celle (8) située après la première (9), par rapport au sens d'enfoncement de la carte (3), fait saillie dans la fente (2) du boîtier (1) isolant tandis que ladite première (9) est située,en l'absence de carte , en retrait par rapport au plan qu'occupe la face active de la carte lors de sa mise en place.1-Cohtact for printed circuit boards of the kind of those constituted by a conductive blade folded in the shape of a hairpin of which one branch, connected to the conductor, is immobilized in an insulating case while the other projects in the usual slot of the housing, characterized in that the movable branch (6) has two protuberances (8-9) including that (8) located after the first (9), relative to the direction of insertion of the card (3), protrudes into the slot (2) of the insulating housing (1) while said first (9) is located, in the absence of a card, set back from the plane occupied by the active face of the card when it is put in place. 2-Contact selon la revendication l,caractérisé en ce que l'introduction de la carte (3) provoque, lors de sa rencontre avec la seconde protubérance (8) le déplacement de la première protubérance (9) qui s'applique contre la piste conductrice (11) de ladite carte.2-contact according to claim l, characterized in that the introduction of the card (3) causes, when it meets the second protuberance (8) the displacement of the first protuberance (9) which is applied against the track conductor (11) of said card. 3-Contact selon chacune des revendications 1 et 2, caractérisé en ce qu'il présente deux protubérances (9) latérales, situées chacune sur un bras (10) découpé dans le contact et s'étendant au-delà de la branche (6) du contact sensiblement dans le prolongement de cette dernière.3-contact according to each of claims 1 and 2, characterized in that it has two lateral protrusions (9), each located on an arm (10) cut in the contact and extending beyond the branch (6) of the contact substantially in the extension of the latter. 4-Contact selon chacune des revendications 1 et 2, caractérisé en ce qu'il présente une protubérance (9) médiane située sur un bras (10a) découpé dans le contact et s'étendant au-delà de la branche (6) du contact sensiblement dans le prolongement de cette dernière.4-contact according to each of claims 1 and 2, characterized in that it has a protuberance (9) in the middle located on an arm (10a) cut in the contact and extending beyond the branch (6) of the contact substantially in line with the latter. 5-Contact selon chacune des revendications 1 à 4,caractérisé en ce que chaque protubérance (9) est formée par un cambrage approprié du bras correspondant (10 ou lOa).5-Contact according to each of claims 1 to 4, characterized in that each protuberance (9) is formed by an appropriate bending of the corresponding arm (10 or lOa).
EP85400910A 1984-05-15 1985-05-10 Contact for a printed circuit board Withdrawn EP0163567A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8407484 1984-05-15
FR8407484A FR2564643A1 (en) 1984-05-15 1984-05-15 CONTACT FOR PRINTED CIRCUIT BOARDS

Publications (1)

Publication Number Publication Date
EP0163567A1 true EP0163567A1 (en) 1985-12-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP85400910A Withdrawn EP0163567A1 (en) 1984-05-15 1985-05-10 Contact for a printed circuit board

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EP (1) EP0163567A1 (en)
FR (1) FR2564643A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4721348A (en) * 1986-02-17 1988-01-26 E. I. Du Pont De Nemours And Company Electrical edge connector for a substrate
FR2656160A1 (en) * 1989-12-20 1991-06-21 Souriau Electric Gmbh ADAPTER FOR ELECTRICAL CONNECTION AND CONNECTOR ELEMENT FOR MOUNTING IN THIS ADAPTER.
EP0551826A1 (en) * 1992-01-15 1993-07-21 Molex Incorporated Edge connector for a printed circuit card
EP0643390A2 (en) * 1993-09-14 1995-03-15 Sony Corporation Recording medium cassette
GB2386481A (en) * 2002-03-11 2003-09-17 Hon Hai Prec Ind Co Ltd PCB connector with redundant contacts
WO2009152131A1 (en) * 2008-06-09 2009-12-17 Molex Incorporated Card edge connector

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3832588C2 (en) * 1988-09-24 1994-06-01 Amphenol Corp Contact set

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1071182B (en) * 1959-12-17
FR2321784A1 (en) * 1975-08-22 1977-03-18 Siemens Ag CONTACT DEVICE
FR2490410A1 (en) * 1980-09-12 1982-03-19 Tuloup Pierre Base alloy plated printed circuit edge connector - has simple triangular shaped sprung contact lead tin plated with tipping and sliding contacts and low wear

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1071182B (en) * 1959-12-17
FR2321784A1 (en) * 1975-08-22 1977-03-18 Siemens Ag CONTACT DEVICE
FR2490410A1 (en) * 1980-09-12 1982-03-19 Tuloup Pierre Base alloy plated printed circuit edge connector - has simple triangular shaped sprung contact lead tin plated with tipping and sliding contacts and low wear

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4721348A (en) * 1986-02-17 1988-01-26 E. I. Du Pont De Nemours And Company Electrical edge connector for a substrate
FR2656160A1 (en) * 1989-12-20 1991-06-21 Souriau Electric Gmbh ADAPTER FOR ELECTRICAL CONNECTION AND CONNECTOR ELEMENT FOR MOUNTING IN THIS ADAPTER.
EP0551826A1 (en) * 1992-01-15 1993-07-21 Molex Incorporated Edge connector for a printed circuit card
EP0643390A2 (en) * 1993-09-14 1995-03-15 Sony Corporation Recording medium cassette
EP0643390A3 (en) * 1993-09-14 1995-06-28 Sony Corp Recording medium cassette.
US5541796A (en) * 1993-09-14 1996-07-30 Sony Corporation Cassette case board and release part for recording medium cassette
GB2386481A (en) * 2002-03-11 2003-09-17 Hon Hai Prec Ind Co Ltd PCB connector with redundant contacts
WO2009152131A1 (en) * 2008-06-09 2009-12-17 Molex Incorporated Card edge connector

Also Published As

Publication number Publication date
FR2564643A1 (en) 1985-11-22

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Inventor name: EGON, PHILIPPE

Inventor name: MAN, FRANCOIS