EP0178974A1 - Connecting devices for printed-circuit boards - Google Patents

Connecting devices for printed-circuit boards Download PDF

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Publication number
EP0178974A1
EP0178974A1 EP85401791A EP85401791A EP0178974A1 EP 0178974 A1 EP0178974 A1 EP 0178974A1 EP 85401791 A EP85401791 A EP 85401791A EP 85401791 A EP85401791 A EP 85401791A EP 0178974 A1 EP0178974 A1 EP 0178974A1
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EP
European Patent Office
Prior art keywords
contact
printed circuit
circuit board
strand
slide
Prior art date
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Granted
Application number
EP85401791A
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German (de)
French (fr)
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EP0178974B1 (en
Inventor
François Robert Bonhomme
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Individual
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Individual
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Priority to AT85401791T priority Critical patent/ATE34887T1/en
Publication of EP0178974A1 publication Critical patent/EP0178974A1/en
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Publication of EP0178974B1 publication Critical patent/EP0178974B1/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
    • H01R12/82—Coupling devices connected with low or zero insertion force
    • H01R12/85—Coupling devices connected with low or zero insertion force contact pressure producing means, contacts activated after insertion of printed circuits or like structures
    • H01R12/89—Coupling devices connected with low or zero insertion force contact pressure producing means, contacts activated after insertion of printed circuits or like structures acting manually by moving connector housing parts linearly, e.g. slider

Definitions

  • connection devices for printed circuit boards which comprise a frame or case having an insertion side for printed circuit boards as well as, at least on one side of the board, a set of members of elastic contact oriented transversely to the card and intended to touch through an active area, with an appropriate elastic force, conductive connecting tracks arranged on the adjacent side of the card when the latter has been inserted into the frame or housing of the connection device after having been guided in the mean plane thereof, and in which there is a control mechanism made available to the operator and capable of acting on the elastic members of these connectors alternately in the direction of the closing so as to allow the insertion of a printed circuit board with zero force into the connection device when the contacts are moved away from the board by said mechanism and, on the contrary, to apply the bodies of contact with a determined elastic force on the tracks or areas of the printed circuit board when the elastic contact members have been brought into the closed position.
  • connection devices for printed circuit boards arise from the fact that, during the closing movement, the elastic contact members are applied to the conductive tracks of the card in a direction perpendicular thereto, which does not make it possible to obtain a good quality of contact when the tracks and / or the contact members come to be oxidized or see, in another way, their surface quality deteriorating.
  • the elastic lever arm that is to say the average length between the area of the contact member which comes to rest against the track card and the point of attachment or anchoring of the contact member on the movable control element of the actuating mechanism, is relatively limited, which can be a drawback in some cases.
  • the size of the contact members in the direction perpendicular to the printed circuit board depends on the length of the elastic lever arm as defined above, which leads to a compromise between these two characteristics which does not allow , however, to considerably reduce this size which reflects on the width of the connection device, in particular, in the case where it has two rows of elastic contact members on either side of the plane of the circuit board prints.
  • this width is of the order of 27 mm for a device with two rows of contact members whereas it is very advantageous, in modern apparatus, to reduce this bulk.
  • the present invention therefore proposes to improve these devices and to allow, in a connection device of the type having at least one row of contact members, as well as a control mechanism made available to the operator to distance or bring the contact members closer to the tracks of the printed circuit board as a function of the opening or closing movement of said mechanism according to a complex movement causing self-cleaning of the contact surfaces, to increase the elastic lever arm of the contact members contact, relative to the general dimensions of this device and to reduce the overall width of this same device.
  • Another objective of the invention is to achieve such an improvement making it possible to ensure and then eliminate the contact between the contact members and the tracks of the printed circuit area, in a safe and reliable manner.
  • Yet another objective of the invention is to achieve such an improvement allowing an assembly which can be largely or even completely automated.
  • Yet another object of the invention is to provide such an improvement in which the parts of mechanisms have improved characteristics.
  • the invention relates to an improvement to the connection devices for printed circuit boards, of the type comprising, in a housing having an open insertion side for printed circuit boards, at least one assembly comprising a row of components elastic contacts oriented transversely to the printed circuit board, and a control mechanism made available to the operator or an actuating means and acting on said elastic members in a row by a movable piece or slide to alternately ensure, in a closing movement, the application of the elastic contact members against the tracks of the printed circuit board in a movement including a self-cleaning friction stroke, and in an opening movement, the spacing said elastic contact members away from the corresponding tracks of the printed circuit board, characterized in that the elastic contact members have a e generally elongated overall shape extending along the plane of the printed circuit board, with a first strand making it possible to push the movable part of the contact member towards the printed circuit board when it is stressed by a first part of a part of a mechanism or slide moving parallel to the plane of the printed circuit board in the closing direction, and a second
  • the actual contact area of the elastic contact member is arranged towards a free end of this member, near the second part of the part or slide, but, as a variant, this area can be arranged in a location located between said first and second strands.
  • the elastic contact member may comprise, from its fixing zone in the corresponding connector, a first strand inclined in a direction moving it progressively away from the plane of the printed circuit board and intended to cooperate with a relief, boss or ramp of the slide having a tendency to tilt said strand, against its elastic resistance, in the direction of the plane of the printed circuit board, this first strand extending, at a certain distance, by the second strand formed by an acute angle reference and capable of cooperating with a second relief, boss or ramp of the slider pushing said second strand away from the printed circuit board when the slider moves in the opposite direction, the dimensions and inclinations strands of the contact being of course such that, when one of the reliefs or ramps of the slider comes into action gradually, the other gradually ceases its action.
  • the contact zone is advantageously located at the free end of said second strand and it is understood that, when the first strand is biased by the first slider part moving in the closing direction, the tilting of said first strand ends up bringing the contact zone in contact with the corresponding track on the printed circuit board, after which the continued movement of the slider, causing an additional tilting of the first strand, results in a modification of the length of the elastic contact member, resulting in a movement of the contact zone applied against the printed circuit board over a determined self-cleaning friction stroke.
  • the elastic contact member which can be produced, for example, in elastic metal wire of round, square, rectangular, or other section, or else by winding several twisted wires, has a fixing zone in the housing of the connection device, provided with one or more folds cooperating with a housing of corresponding shape for and in its plane an axial immobilization / of the contact member, the housing being in the form of a slot in a connector contact carrier strip open at one of its ends for the introduction, by transverse movement, of the contact, the housings advantageously having bosses or grooves allowing the tightening of the contacts in their housings as well as their positioning in relation to a reference face.
  • the depths of these housings can vary alternately in order to allow the use of contacts of slightly different shapes having tails emerging from the contact-holding part alternately at different levels so as to increase the distance between tails. contact terminals and facilitate connection of the contacts to the corresponding conductors.
  • the moving part of the mechanism hereinafter called the slide, is preferably made of injected plastic and has a plurality of housings, at the pitch of the contact members, inside which the moving parts of these can move in the housing plan, each housing having a first boss or ramp intended to push back the first strand of the contact member in the closing direction, and a second boss or ramp of opposite orientation positively tending to move the second strand away from the printed circuit board in the closed position and holding it in this position.
  • sliders can advantageously cooperate with mechanism strips, preferably also made of injected plastic material and capable of moving parallel to the row of contact members, that is to say in the direction of the length of the device.
  • t y of connection according to the invention and therefore perpendicular to the direction of movement of the slide (s), the transmission of movement from the slide to the slide being effected in known manner by ramp effect, thanks, for example, to pins coming from injection presented by the slide and penetrating into inclined channels coming from injection and made in the displacement strip, the slides and strips being preferably guided in the housing of the connection device by a sliding assembly of the type dovetail.
  • the device shown comprises a housing 1 having the external shape of a rectangular parallelepiped and having a transverse passage opening out on the one hand on the front face 1a, which constitutes the face receiving the printed circuit board and the rear face 1b which presents the tails of the contact members, the end faces lc and ld being flat without discontinuity then that the side faces le and lf have, in the thickness of the wall, two grooves 2 in dovetail.
  • the space inside the housing constitutes a passage, the cross-section of which can be clearly seen in FIGS. 1, 2 and 4 with from place to place dovetail grooves 3 perpendicular to the grooves 2 and opening into them at the crossing points .
  • the bottom of the dovetail grooves 3 also has, towards the rear face, small grooves 4 whose role will appear later.
  • two slides 5 are inserted, each having two dovetail reliefs 5a which slide in the grooves 3 so that these slides 5 are capable of being moved in a sliding movement. alternating parallel to the direction of insertion of the printed circuit board.
  • These slides 5 have a plurality of cells 6 whose shape will be described in more detail later, these cells being arranged at the bottom of the elastic contact members.
  • the device For the reciprocating movement in the closing and opening direction of the slides 5, the device comprises two mechanism strips 7 made, like the other parts, of injected plastic material and capable of sliding in the dovetail grooves 2, transversely to the sliding direction of the slides 5. These strips 7 have ramp-shaped grooves 8 whose depth is less than the thickness of the strip opening on / on the rear side and into which pins 9 of the parts 5a of the slides penetrate. 5, these pins having been able to come into place thanks to the grooves 4. It is therefore understood that the displacement of the strips 7 causes, by the ramp or cam effect associating the parts 8 and 9, the sliding movement of the slides 5 in the direction arrows.
  • connector strips 10 were housed, the bodies of which come to bear against a shoulder lg of the housing so as to exactly delimit their position.
  • These connector strips 10 which are also made of injected plastic material have a plurality of cells 11, in step with the elastic contact members and whose shape is best seen in FIG. 3. Between each two successive cells 11, the strip 10 has an extension 12, all of the extensions 12 of the two contact carrier strips 10 forming a housing which guides and receives the end of the printed circuit board 13, as can be seen in FIG. 4. extensions 12 could be omitted or replaced by different shapes.
  • the housing may be provided with a bottom portion interposed between the two contact carrier strips 10 and provided with a housing receiving the end of the printed circuit board 13.
  • the housings 11 are in the form of slots made in the pitch of the contact members, in the contact carrier strip 10, these slots opening over the entire central face 10a of these strips.
  • these slots 11 in the form of a slot have a relatively reduced depth from the end 11a close to the extensions 12, with then a deeper clearance 11b followed by a new shallower part llc similar to the part 11a, after which a much larger clearance lld allows the tail of the contact member to come out.
  • the elastic contact member 14 has a fixing part 14a which conforms to the shapes of the housing parts 11a, 11b, 11c and 11d from which the contact tail 14e comes out.
  • each contact carrier strip 10 the extreme housing parts lld, 11'd are alternately of different depths, the parts lld being deeper than the parts 11'd, the difference in level being preferably normalized, for example, 1.27 mm, corresponding to the pitch of the housings 11.
  • the contacts 14 having corresponding shapes, we sees that the tails 14e, 14'e are arranged in the same way alternately.
  • the two contact carrier strips 10 are arranged in the housing, the passage of which is shaped in correspondence, so that the housings 11 of the two respective contact carrier strips 10 are not located one opposite the other. , to avoid a risk of electrical contact between two elastic contact members 14 facing each other.
  • This arrangement as can be seen in FIG. 2, also allows the use of identical contact carriers 10 for the same housing 1.
  • the housings 11 have, each time on a given face, ribs 11e extending from the face 10a, these ribs being intended to form narrowing allowing force engagement of the contacts 14 in the housings 11 and maintaining the contacts in these cells, these ribs 11 further applying the contact 14 against the face of the housing 11 opposite to that carrying the ribs and constituting the geometric reference face.
  • the contacts 14 have, from the immobilization part 14a, a first strand forming a descending branch 14f progressively moving away from the printed circuit board 13 to join, after an obtuse angle, a straight part 14g. At the end of the latter, an acute angle return forms a second strand 14h which therefore approximates the printed circuit board. 13 and has at its end an end portion 14i, the elbow 14j connecting the portions 14h, 14i forming the actual electrical contact area.
  • the cells 6 of the slides 5 have a bottom provided, on the rear side, with a first inclined ramp 6a continuing with a rectilinear bottom 6b, after which a return 6c forms a second part in the form of an inclined ramp 6d oriented this time downwards, unlike the ramp part 6a, the cell opening to the outside at the end of the ramp part 6d.
  • the dimensions are such that, when the slider 5 is in its rear open position, shown in FIG. 5, the first slider part 6a is distant from the strand 14f of the elastic contact member while the slide part 6c on the contrary retains the inclined strand 14h of the elastic contact member in a position remote from the printed circuit board 13, and this by counteracting the elastic return force of the contact which tends to want to bring the contact back 14d to the printed circuit board.
  • the slide When, by operating the corresponding slide 7, the slide is moved forward towards its closed position, as shown in FIG. 6, the second slide ramp 6d moves away from the branch 14h which can therefore approach the printed circuit board 13, while the first ramp 6a, coming into contact with the strand 14f, repels it by tilting it around the pivot point located in the area 14a to bring it closer to the circuit board 13 so that the area contact 14j is applied against the track (not shown) facing the printed circuit board 13.
  • the ramp part 6a brings the strand 14f even more towards the horizontal and further opens the angle between the strands 14f and 14g of the elastic contact member so that not only the part of the contact zone 14j is applied with more force against the track of the printed circuit board 13 but also that a modification of the length of the member 14, which causes a sliding friction of the zone 14j on the printed circuit board on a path l between the point a where it first came to apply against the card and the point b which corresponds to the extreme closing contact position, this movement thus ensuring self-cleaning of the contact surfaces.
  • an elastic contact member 15 has a strand 15a extending in a rectilinear manner and substantially parallel to the printed circuit board 13 then, after an elbow following the first branch 15a, a second branch 15b returning substantially parallel to the branch 15a, this branch 15b continuing at one end 15c.
  • the slider 16 similar to the slider 5, has a first part of the slider forming a ramp 16a which is in contact with the end starting to curve from the branch 15a.
  • the cell in which the branches 15a and 15b of the contact member extend also has a boss 16b which, in the open position shown in the lower part of FIG.
  • the two strips 7 are put in place in the grooves 2 of the housing 1 so that the openings in the grooves 8 are arranged in line with the grooves 4.
  • the two slides 5 are brought into the housing 1 up to 'in that the pins 9, crossing the channels 4, enter the grooves 8. It is thus possible to move the strips longitudinally and to move, accordingly, the slides transversely.
  • the two contact carriers 10, fitted with their contact members 14, are put in place by the rear face of the housing, the strips 10 also having dovetail extensions penetrating into the grooves. res 3 following the slides 5.
  • the mobile parts of the contacts 14 are housed in the cells 6 of the slides 5.
  • the contact carrier strips 10, applied against the shoulders lg, are held in place by bonding, ultrasonic welding or any other means.
  • the contact member consists of a wire and differs from the contact member 14 by the fact that the free end and 14i continues with a bent return / forming an ascending branch 14k similar to the end branch 14i , an elbow 141 forming the actual contact point and a free downward branch 14m coming to cooperate with the ramp 6d in the same way as the branch 14h.
  • the point of contact 141 should normally be located at a level slightly higher or at least equal to that of point 14j so that, when pressed, it is certain that it comes into contact with the track.

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

Abstract

The connection device permits the insertion of printed circuit cards without effort. Resilient contact elements have a first portion which, when subjected to the action of a first projection of a slide, urges back a movable contact portion toward the card, and a second portion which, when subjected to the opposed action of a second projection of the slide, urges back the contact portion away from the card.

Description

La présente invention est relative aux dispositifs de connexion pour cartes de circuits imprimés qui comprennent un cadre ou boîtier présentant un côté d'introduction pour les cartes de circuits imprimés ainsi que, au moins d'un côté de la carte, un ensemble d'organes de contact élastiques orientés transversalement par rapport à la carte et destinés à toucher par une zone active, avec une force élastique appropriée, des pistes conductrices de raccordement disposées sur le côté adjacent de la carte lorsque celle-ci a été introduite dans le cadre ou boîtier du dispositif de connexion après avoir été guidée dans le plan moyen de celui-ci, et dans lesquels existe un mécanisme de commande mis à la disposition de l'opérateur et propre à agir sur les organes élastiques de ces connecteurs alternativement dans le sens de la fermeture de façon à permettre d'introduire une carte de circuits imprimés avec une force nulle dans le dispositif de connexion lorsque les contacts sont écartés de la carte par ledit mécanisme et, au contraire, à appliquer les organes de contact avec une force élastique déterminée sur les pistes ou plages de la carte de circuits imprimés lorsque les organes de contact élastiques ont été amenés dans la position de fermeture.The present invention relates to connection devices for printed circuit boards which comprise a frame or case having an insertion side for printed circuit boards as well as, at least on one side of the board, a set of members of elastic contact oriented transversely to the card and intended to touch through an active area, with an appropriate elastic force, conductive connecting tracks arranged on the adjacent side of the card when the latter has been inserted into the frame or housing of the connection device after having been guided in the mean plane thereof, and in which there is a control mechanism made available to the operator and capable of acting on the elastic members of these connectors alternately in the direction of the closing so as to allow the insertion of a printed circuit board with zero force into the connection device when the contacts are moved away from the board by said mechanism and, on the contrary, to apply the bodies of contact with a determined elastic force on the tracks or areas of the printed circuit board when the elastic contact members have been brought into the closed position.

Des dispositifs de ce genre ont, par exemple, déjà été décrits dans le brevet français 2 305 095 du déposant, déposé le 20 mars 1975 et dans le certificat d'addition à ce brevet, n° 2 340 665 déposé le 6 février 1976.Devices of this kind have, for example, already been described in French patent 2,305,095 of the applicant, filed on March 20, 1975 and in the certificate of addition to this patent, No. 2,340,665 filed on February 6, 1976.

Les inconvénients de nombreux dispositifs de connexion pour cartes de circuits imprimés proviennent de ce que, lors du mouvement de fermeture, les organes de contact élastiques viennent s'appliquer sur les pistes conductrices de la carte dans une direction perpendiculaire à celle-ci, ce qui ne permet pas d'obtenir une bonne qualité de contact lorsque les pistes et/ou les organes de contact viennent à être oxydés ou voient, d'une autre manière, leur qualité de surface se détériorer. C'est pourquoi on a déjà prévu, dans les brevets précités, de donner à l'organe de contact élastique une composante de déplacement parallèle au plan des pistes, c'est-à-dire généralement au plan de la carte, de façon à provoquer, lors du mouvement de fermeture, un balayage dans lequel, après que la zone de contact de l'organe de contact élastique est venue rencontrer la surface de la piste, la poursuite du mouvement permet à cette zone de contact de glisser, sur un certain trajet, le long de la piste pour provoquer un balayage assurant un auto-nettoyage.The drawbacks of many connection devices for printed circuit boards arise from the fact that, during the closing movement, the elastic contact members are applied to the conductive tracks of the card in a direction perpendicular thereto, which does not make it possible to obtain a good quality of contact when the tracks and / or the contact members come to be oxidized or see, in another way, their surface quality deteriorating. This is why provision has already been made in the aforementioned patents to give the elastic contact member a displacement component parallel to the plane of the tracks, that is to say generally to the plane of the card, so as to cause, during the closing movement, a sweep in which, after the contact zone of the elastic contact member has come to meet the surface of the track, the continuation of the movement allows this contact zone to slide, over a certain path, along the track to cause a sweep ensuring self-cleaning.

Ces dispositifs se sont montrés très satisfaisants dans la pratique mais ils présentent, néanmoins, quelques inconvénients. En particulier, du moins pour des formes d'organes de contact relativement simples, le bras de levier élastique, c'est-à-dire la longueur moyenne entre la zone de l'organe de contact qui vient s'appliquer contre la piste de carte et le point de fixation ou d'ancrage de l'organe de contact sur l'élément de commande mobile du mécanisme d'actionnement, est relativement limité, ce qui peut être un inconvénient dans certain cas. En outre, l'encombrement des organes de contact dans la direction perpendiculaire à la carte de circuits imprimés dépend de la longueur du bras de levier élastique tel que défini ci-dessus, ce qui conduit à un compromis entre ces deux caractéristiques qui ne permet pas, toutefois, de réduire considérablement cet encombrement qui rejaillit sur la largeur du dispositif de connexion, en particulier, dans le cas où celui-ci présente deux rangées d'organes de contact élastiques de part et d'autre du plan de la carte de circuits imprimés. Ainsi, dans la pratique, cette largeur est de l'ordre de 27 mm pour un dispositif à deux rangées d'organes de contact alors qu'il est très avantageux, dans les appareillages modernes, de réduire cet encombrement.These devices have been shown to be very satisfactory in practice, but they nevertheless have some drawbacks. In particular, at least for relatively simple contact member shapes, the elastic lever arm, that is to say the average length between the area of the contact member which comes to rest against the track card and the point of attachment or anchoring of the contact member on the movable control element of the actuating mechanism, is relatively limited, which can be a drawback in some cases. In addition, the size of the contact members in the direction perpendicular to the printed circuit board depends on the length of the elastic lever arm as defined above, which leads to a compromise between these two characteristics which does not allow , however, to considerably reduce this size which reflects on the width of the connection device, in particular, in the case where it has two rows of elastic contact members on either side of the plane of the circuit board prints. Thus, in practice, this width is of the order of 27 mm for a device with two rows of contact members whereas it is very advantageous, in modern apparatus, to reduce this bulk.

La présente invention se propose donc de perfectionner ces dispositifs et de permettre, dans un dispositif de connexion du type présentant au moins une rangée d'organes de contact, ainsi qu'un mécanisme de commande mis à la disposition de l'opérateur pour éloigner ou rapprocher les organes de contact des pistes de la carte de circuits imprimés en fonction du mouvement d'ouverture ou de fermeture dudit mécanisme suivant un mouvement complexe provoquant un auto-nettoyage des surfaces en contact, d'augmenter le bras de levier élastique des organes de contact, relativement aux dimensions générales de ce dispositif et de diminuer l'encombrement en largeur de ce même dispositif.The present invention therefore proposes to improve these devices and to allow, in a connection device of the type having at least one row of contact members, as well as a control mechanism made available to the operator to distance or bring the contact members closer to the tracks of the printed circuit board as a function of the opening or closing movement of said mechanism according to a complex movement causing self-cleaning of the contact surfaces, to increase the elastic lever arm of the contact members contact, relative to the general dimensions of this device and to reduce the overall width of this same device.

Un autre objectif de l'invention est de réaliser un tel perfectionnement permettant d'assurer puis de supprimer le contact entre les organes de contact et les pistes de la plage de circuits imprimés, d'une façon sûre et fiable.Another objective of the invention is to achieve such an improvement making it possible to ensure and then eliminate the contact between the contact members and the tracks of the printed circuit area, in a safe and reliable manner.

Un autre objectif encore de l'invention est de réaliser un tel perfectionnement permettant un montage qui puisse être en grande partie ou même totalement automatisé.Yet another objective of the invention is to achieve such an improvement allowing an assembly which can be largely or even completely automated.

Un autre objectif encore de l'invention est de fournir un tel perfectionnement dans lequel les parties de mécanisme présentent des caractéristiques améliorées.Yet another object of the invention is to provide such an improvement in which the parts of mechanisms have improved characteristics.

L'invention a pour objet un perfectionnement aux dispositifs de connexion pour cartes à circuits imprimés, du type comprenant, dans un boîtier présentant un côté ouvert d'introduction pour les cartes de circuits imprimés, au moins un ensemble comportant une rangée d'organes de contact élastiques orientés transversalement par rapport à la carte à circuits imprimés, et un mécanisme de commande mis à la disposition de l'opérateur ou d'un moyen d'actionnement et agissant sur lesdits organes élastiques d'une rangée par une pièce ou coulisseau mobile pour assurer alternativement, dans un mouvement de fermeture, l'application des organes élastiques de contact contre les pistes de la carte à circuits imprimés selon un mouvement incluant une course de frottement auto-nettoyant, et dans un mouvement d'ouverture, l'écartement desdits organes élastiques de contact loin des pistes correspondantes de la carte de circuits imprimés, caractérisé en ce que les organes de contact élastiques présentent une forme d'ensemble généralement allongée s'étendant le long du plan de la carte de circuits imprimés, avec un premier brin permettant de repousser la partie mobile de l'organe de contact vers la carte de circuits imprimés lorsqu'il est sollicité par une première partie d'une pièce de mécanisme ou coulisseau se déplaçant parallèlement au plan de la carte de circuits imprimés en direction de fermeture, et un deuxième brin éloigné du premier et susceptible de ramener ladite partie mobile de l'organe de contact dans sa position initiale, loin de la carte de circuits imprimés lorsqu'il est sollicité par une deuxième partie dudit coulisseau en direction inverse d'ouverture.The invention relates to an improvement to the connection devices for printed circuit boards, of the type comprising, in a housing having an open insertion side for printed circuit boards, at least one assembly comprising a row of components elastic contacts oriented transversely to the printed circuit board, and a control mechanism made available to the operator or an actuating means and acting on said elastic members in a row by a movable piece or slide to alternately ensure, in a closing movement, the application of the elastic contact members against the tracks of the printed circuit board in a movement including a self-cleaning friction stroke, and in an opening movement, the spacing said elastic contact members away from the corresponding tracks of the printed circuit board, characterized in that the elastic contact members have a e generally elongated overall shape extending along the plane of the printed circuit board, with a first strand making it possible to push the movable part of the contact member towards the printed circuit board when it is stressed by a first part of a part of a mechanism or slide moving parallel to the plane of the printed circuit board in the closing direction, and a second strand distant from the first and capable of bringing said movable part of the contact member into its initial position , away from the printed circuit board when it is stressed by a second part of said slider in the opposite direction of opening.

De préférence, la zone de contact proprement dite de l'organe de contact élastique se trouve disposée vers une extrémité libre de cet organe, à proximité de la seconde partie de la pièce ou coulisseau mais, en variante, cette zone peut être disposée en un emplacement situé entre lesdits premier et second brins.Preferably, the actual contact area of the elastic contact member is arranged towards a free end of this member, near the second part of the part or slide, but, as a variant, this area can be arranged in a location located between said first and second strands.

De façon particulièrement avantageuse, l'organe de contact élastique peut comporter, à partir de sa zone de fixation dans le connecteur correspondant, un premier brin incliné dans une direction l'écartant progressivement du plan de la carte de circuits imprimés et destiné à coopérer avec un relief, bossage ou rampe du coulisseau ayant tendance à faire basculer ledit brin, à l'encontre de sa résistance élastique, en direction du plan de la carte de circuits imprimés, ce premier brin se prolongeant, à une certaine distance, par le second brin formé par un renvoi à angle aigu et susceptible de coopérer avec un deuxième relief, bossage ou rampe du coulisseau venant repousser ledit second brin à l'écart de la carte de circuits imprimés lorsque le coulisseau se déplace en sens contraire, les dimensions et inclinaisons des brins du contact étant bien entendu telles que, lorsque l'un des reliefs ou rampes du coulisseau vient en action progressivement, l'autre cesse progressivement son action.In a particularly advantageous manner, the elastic contact member may comprise, from its fixing zone in the corresponding connector, a first strand inclined in a direction moving it progressively away from the plane of the printed circuit board and intended to cooperate with a relief, boss or ramp of the slide having a tendency to tilt said strand, against its elastic resistance, in the direction of the plane of the printed circuit board, this first strand extending, at a certain distance, by the second strand formed by an acute angle reference and capable of cooperating with a second relief, boss or ramp of the slider pushing said second strand away from the printed circuit board when the slider moves in the opposite direction, the dimensions and inclinations strands of the contact being of course such that, when one of the reliefs or ramps of the slider comes into action gradually, the other gradually ceases its action.

La zone de contact est avantageusement située à l'extrémité libre dudit second brin et l'on comprend que, lorsque le premier brin est sollicité par la première partie de coulisseau se dirigeant en direction de fermeture, le basculement dudit premier brin finit par amener la zone de contact au contact de la piste correspondante de la carte de circuits imprimés, après quoi la poursuite du mouvement du coulisseau, provoquant un basculement supplémentaire du premier brin, entraîne une modification de la longueur de l'organe de contact élastique se traduisant par un mouvement de la zone de contact appliquée contre la carte de circuits imprimés sur une course de frotttement déterminée auto-nettoyante.The contact zone is advantageously located at the free end of said second strand and it is understood that, when the first strand is biased by the first slider part moving in the closing direction, the tilting of said first strand ends up bringing the contact zone in contact with the corresponding track on the printed circuit board, after which the continued movement of the slider, causing an additional tilting of the first strand, results in a modification of the length of the elastic contact member, resulting in a movement of the contact zone applied against the printed circuit board over a determined self-cleaning friction stroke.

Selon un perfectionnement de l'invention, l'organe de contact élastique, qui peut être réalisé, par exempt, en fil métallique élastique de section ronde, carrée, rectangulaire, ou autre, ou bien par enroulement de plusieurs fils torsadés, présente une zone de fixation dans le boîtier du dispositif de connexion, pourvue d'un ou plusieurs replis coopérant avec un logement de forme correspondante pour et dans son plan une immobilisation axiale/de l'organe de contact, le logement se présentant sous forme d'une fente dans une réglette porte-contacts de connecteur ouverte à l'une de ses extrémités pour l'introduction, par mouvement transversal, du contact, les logements présentant avantageusement des bossages ou cannelures permettant le serrage des contacts dans leurs logements ainsi que leur positionnement par rapport à une face de référence.According to an improvement of the invention, the elastic contact member, which can be produced, for example, in elastic metal wire of round, square, rectangular, or other section, or else by winding several twisted wires, has a fixing zone in the housing of the connection device, provided with one or more folds cooperating with a housing of corresponding shape for and in its plane an axial immobilization / of the contact member, the housing being in the form of a slot in a connector contact carrier strip open at one of its ends for the introduction, by transverse movement, of the contact, the housings advantageously having bosses or grooves allowing the tightening of the contacts in their housings as well as their positioning in relation to a reference face.

De façon avantageuse, les profondeurs de ces logements peuvent varier de façon alternative afin de permettre d'utiliser des contacts de formes légèrement différentes présentant des queues émergeant hors de la pièce porte-contact alternativement à des niveaux différents de façon à augmenter la distance entre queues de contact voisines et faciliter le raccordement des contacts aux conducteurs correspondants.Advantageously, the depths of these housings can vary alternately in order to allow the use of contacts of slightly different shapes having tails emerging from the contact-holding part alternately at different levels so as to increase the distance between tails. contact terminals and facilitate connection of the contacts to the corresponding conductors.

La pièce mobile de mécanisme, ci-après appelée coulisseau, est de préférence réalisée en matière plastique injectée et présente une pluralité de logements, au pas des organes de contact, à l'intérieur desquels les parties mobiles de ceux-ci peuvent se déplacer dans le plan du logement, chaque logement présentant un premier bossage ou rampe destiné à venir repousser le premier brin de l'organe de contact en direction de fermeture, et un second bossage ou rampe d'orientation opposée tendant positivement à écarter le second brin de la carte de circuits imprimés dans la position de fermeture et à le maintenir dans cette position.The moving part of the mechanism, hereinafter called the slide, is preferably made of injected plastic and has a plurality of housings, at the pitch of the contact members, inside which the moving parts of these can move in the housing plan, each housing having a first boss or ramp intended to push back the first strand of the contact member in the closing direction, and a second boss or ramp of opposite orientation positively tending to move the second strand away from the printed circuit board in the closed position and holding it in this position.

Ces coulisseaux peuvent avantageusement coopérer avec des réglettes de mécanisme, de préférence également réalisées en matière plastique injectée et susceptibles de se déplacer parallèlement à la rangée d'organes de contact, c'est-à-dire dans le sens de la longueur du disposi- tif de connexion selon l'invention, et donc perpendiculairement à la direction de déplacement du ou des coulisseaux, la transmission du mouvement de la réglette au coulisseau s'effectuant de façon en soi connue par effet de rampe, grâce, par exemple, à des pions venus d'injection présentés par le coulisseau et pénétrant dans des canaux inclinés venant d'injection et pratiqués dans la réglette de déplacement, les coulisseaux et réglettes étant de préférence guidés dans le boîtier du dispositif de connexion par un assemblage coulissant du type à queue d'aronde.These sliders can advantageously cooperate with mechanism strips, preferably also made of injected plastic material and capable of moving parallel to the row of contact members, that is to say in the direction of the length of the device. t y of connection according to the invention, and therefore perpendicular to the direction of movement of the slide (s), the transmission of movement from the slide to the slide being effected in known manner by ramp effect, thanks, for example, to pins coming from injection presented by the slide and penetrating into inclined channels coming from injection and made in the displacement strip, the slides and strips being preferably guided in the housing of the connection device by a sliding assembly of the type dovetail.

D'autres avantages et caractéristiques de l'invention apparaîtront à la lecture de la description suivante, faite à titre d'exemple non limitatif et se référant aux dessins annexés dans lesquels :

  • La figure 1 représente une vue schématique avec arrachement d'un dispositif de connexion selon l'invention.
  • La figure 2 représente une vue arrière de ce dispositif au niveau des sorties des queues de contact.
  • La figure 3 représente une vue en perspective avec coupe au niveau d'un logement, d'une réglette porte-contacts de connecteur.
  • La figure 4 représente une vue générale en coupe transversale du dispositif de la figure 1.
  • Les figures 5, 6 et 7 représentent les différentes étapes de déplacement et de mise en oeuvre d'un organe de contact élastique individuel de ce dispositif.
  • La figure 8 représente une vue en coupe transversale selon une autre forme de réalisation de ce dispositif.
  • La figure 9 représente une vue d'un organe de contact élastique selon une variante de l'invention.
Other advantages and characteristics of the invention will appear on reading the following description, given by way of nonlimiting example and referring to the appended drawings in which:
  • Figure 1 shows a schematic view with cutaway of a connection device according to the invention.
  • Figure 2 shows a rear view of this device at the outputs of the contact tails.
  • FIG. 3 represents a perspective view with section through a housing, of a connector contact carrier strip.
  • FIG. 4 represents a general view in cross section of the device of FIG. 1.
  • Figures 5, 6 and 7 show the different stages of movement and implementation of an individual elastic contact member of this device.
  • Figure 8 shows a cross-sectional view according to another embodiment of this device.
  • FIG. 9 represents a view of an elastic contact member according to a variant of the invention.

On se réfère tout d'abord aux figures 1 à 4.We first refer to Figures 1 to 4.

Le dispositif représenté comporte un boîtier 1 ayant la forme extérieure d'un parallélépipède rectangle et présentant un passage transversal débouchant d'une part sur la face antérieure la, qui constitue la face recevant la carte de circuits imprimés et la face postérieure lb qui présente les queues des organes de contact, les faces extrêmes lc et ld étant planes sans discontinuité alors que les faces latérales le et lf présentent, dans l'épaisseur de la paroi, deux rainures 2 en queue d'aronde. L'espace intérieur au boîtier constitue un passage dont on voit bien la section sur les figures 1, 2 et 4 avec de place en place des rainures en queue d'aronde 3 perpendiculaires aux rainures 2 et débouchant dans celles-ci aux points de croisement. Le fond des rainures en queue d'aronde 3 présente encore, vers la face postérieure, des petites rainures 4 dont le rôle apparaîtra ultérieurement.The device shown comprises a housing 1 having the external shape of a rectangular parallelepiped and having a transverse passage opening out on the one hand on the front face 1a, which constitutes the face receiving the printed circuit board and the rear face 1b which presents the tails of the contact members, the end faces lc and ld being flat without discontinuity then that the side faces le and lf have, in the thickness of the wall, two grooves 2 in dovetail. The space inside the housing constitutes a passage, the cross-section of which can be clearly seen in FIGS. 1, 2 and 4 with from place to place dovetail grooves 3 perpendicular to the grooves 2 and opening into them at the crossing points . The bottom of the dovetail grooves 3 also has, towards the rear face, small grooves 4 whose role will appear later.

Dans l'ouverture du boîtier 1, on vient insérer deux coulisseaux 5 qui présentent chacun deux reliefs en queue d'aronde 5a qui viennent glisser dans les rainures 3 de sorte que ces coulisseaux 5 sont susceptibles d'être animés d'un mouvement de coulissement alternatif parallèlement à la direction d'enfichage de la carte de circuits imprimés. Ces coulisseaux 5 présentent une pluralité d'alvéoles 6 dont la forme sera décrite plus en détail ultérieurement, ces alvéoles étant disposés au bas des organes de contact élastiques.In the opening of the housing 1, two slides 5 are inserted, each having two dovetail reliefs 5a which slide in the grooves 3 so that these slides 5 are capable of being moved in a sliding movement. alternating parallel to the direction of insertion of the printed circuit board. These slides 5 have a plurality of cells 6 whose shape will be described in more detail later, these cells being arranged at the bottom of the elastic contact members.

Pour le mouvement alternatif en direction de fermeture et d'ouverture des coulisseaux 5, le dispositif comporte deux réglettes de mécanisme 7 réalisées, comme les autres pièces, en matière plastique injectée et susceptibles de coulisser dans les rainures en queue d'aronde 2, transversalement à la direction de coulissement des coulisseaux 5. Ces réglettes 7 présentent des rainures en forme de rampe 8 dont la profondeur est inférieure à l'épaisseur de la réglettes'ouvrant sur/côté postérieur et dans lesquelles pénètrent des pions 9 des parties 5a des coulisseaux 5, ces pions ayant pu venir en place grâce aux rainures 4. On comprend donc que le déplacement des réglettes 7 provoque, par l'effet de rampe ou came associant les parties 8 et 9, le mouvement de coulissement des coulisseaux 5 dans le sens des flèches.For the reciprocating movement in the closing and opening direction of the slides 5, the device comprises two mechanism strips 7 made, like the other parts, of injected plastic material and capable of sliding in the dovetail grooves 2, transversely to the sliding direction of the slides 5. These strips 7 have ramp-shaped grooves 8 whose depth is less than the thickness of the strip opening on / on the rear side and into which pins 9 of the parts 5a of the slides penetrate. 5, these pins having been able to come into place thanks to the grooves 4. It is therefore understood that the displacement of the strips 7 causes, by the ramp or cam effect associating the parts 8 and 9, the sliding movement of the slides 5 in the direction arrows.

A la partie postérieure du passage du boîtier, on a logé deux réglettes de connecteur 10 dont les corps viennent prendre appui contre un épaulement lg du boîtier de façon à délimiter exactement leur position. Ces réglettes de connecteur 10 qui sont également réalisées en matière plastique injectée présentent une pluralité d'alvéoles 11, au pas des organes de contact élastiques et dont la forme est mieux vue sur la figure 3. Entre chaque fois deux alvéoles 11 successifs, la réglette 10 présente un prolongement 12, l'ensemble des prolongements 12 des deux réglettes porte-contact 10 formant un logement venant guider et recevoir l'extrémité de la carte de circuits imprimés 13, comme on le voit sur la figure 4. Bien entendu, ces prolongements 12 pourraient être omis ou remplacés par des formes différentes. En variante également, le boîtier peut être muni d'une partie de fond interposée entre les deux réglettes porte-contacts 10 et munie d'un logement recevant l'extrémité de la carte de circuits imprimés 13.At the rear of the housing passage, two connector strips 10 were housed, the bodies of which come to bear against a shoulder lg of the housing so as to exactly delimit their position. These connector strips 10 which are also made of injected plastic material have a plurality of cells 11, in step with the elastic contact members and whose shape is best seen in FIG. 3. Between each two successive cells 11, the strip 10 has an extension 12, all of the extensions 12 of the two contact carrier strips 10 forming a housing which guides and receives the end of the printed circuit board 13, as can be seen in FIG. 4. extensions 12 could be omitted or replaced by different shapes. Also in a variant, the housing may be provided with a bottom portion interposed between the two contact carrier strips 10 and provided with a housing receiving the end of the printed circuit board 13.

L'ensemble de ces différentes pièces, après le montage, est maintenu ou fixé d'une façon convenable, par exemple, par collage.All of these different parts, after assembly, are held or fixed in a suitable manner, for example, by gluing.

Les logements 11 se présentent sous forme de fentes pratiquées au pas des organes de contact, dans la réglette porte-contacts 10, ces fentes s'ouvrant sur toute la face centrale 10a de ces réglettes. On voit que ces logements 11 en forme de fente présentent une profondeur relativement réduite à partir de l'extrémité lla proche des prolongements 12, avec ensuite un dégagement plus profond llb suivi d'une nouvelle partie moins profonde llc similaire à la partie lla, à la suite de quoi un dégagement beaucoup plus important lld permet à la queue de l'organe de contact de sortir. On voit également que l'organe de contact élastique 14 présente une partie de fixation 14a épousant les formes des parties de logement lla, llb, llc et 11d d'où sort la queue de contact 14e.The housings 11 are in the form of slots made in the pitch of the contact members, in the contact carrier strip 10, these slots opening over the entire central face 10a of these strips. We see that these slots 11 in the form of a slot have a relatively reduced depth from the end 11a close to the extensions 12, with then a deeper clearance 11b followed by a new shallower part llc similar to the part 11a, after which a much larger clearance lld allows the tail of the contact member to come out. It can also be seen that the elastic contact member 14 has a fixing part 14a which conforms to the shapes of the housing parts 11a, 11b, 11c and 11d from which the contact tail 14e comes out.

On voit, par ailleurs, sur les figures 2 et 3 que, dans chacue réglette porte-contact 10, les parties extrêmes de logement lld, 11'd sont alternativement de profondeurs différentes, les parties lld étant plus profondes que les parties 11'd, la différence de niveau étant de préference normalisée, par exemple, de 1,27 mm, correspondant au pas des logements 11. Les contacts 14 ayant des formes correspondantes, on voit que les queues 14e, 14'e sont disposées de la même façon en alternance. De préférence les deux réglettes porte-contact 10 sont disposées dans le boîtier, dont le passage est conformé en correspondance, de façon que les logements 11 des deux barrettes porte-contacts respectives 10 ne soient pas situées l'une en face de l'autre, pour éviter un risque de contact électrique entre deux organes de contact élastiques 14 se faisant face. Cette disposition, comme on le voit sur la figure 2, autorise, en outre, l'utilisation de porte-contacts 10 identiques pour un même boîtier 1.It can be seen, moreover, in FIGS. 2 and 3 that, in each contact carrier strip 10, the extreme housing parts lld, 11'd are alternately of different depths, the parts lld being deeper than the parts 11'd, the difference in level being preferably normalized, for example, 1.27 mm, corresponding to the pitch of the housings 11. The contacts 14 having corresponding shapes, we sees that the tails 14e, 14'e are arranged in the same way alternately. Preferably the two contact carrier strips 10 are arranged in the housing, the passage of which is shaped in correspondence, so that the housings 11 of the two respective contact carrier strips 10 are not located one opposite the other. , to avoid a risk of electrical contact between two elastic contact members 14 facing each other. This arrangement, as can be seen in FIG. 2, also allows the use of identical contact carriers 10 for the same housing 1.

Comme on le ·voit, d'autre part, les logements 11 présentent, chaque fois sur une face déterminée, des nervures 11e s'étendant depuis la face 10a, ces nervures étant destinées à former des rétrécissements permettant un engagement à force des contacts 14 dans les logements 11 et le maintien des contacts dans ces alvéoles, ces nervures 11 appliquant de plus le contact 14 contre la face du logement 11 opposée à celle portant les nervures et constituant la face de référence géométrique.As can be seen, on the other hand, the housings 11 have, each time on a given face, ribs 11e extending from the face 10a, these ribs being intended to form narrowing allowing force engagement of the contacts 14 in the housings 11 and maintaining the contacts in these cells, these ribs 11 further applying the contact 14 against the face of the housing 11 opposite to that carrying the ribs and constituting the geometric reference face.

On se réfère maintenant plus particulièrement aux figures 5 à 7, étant entendu que, pour des raisons de simplicité de dessins, on a supposé que les contacts 14 étaient directement immobilisés, par leurs queues 14e, dans le boîtier 1.Reference is now made more particularly to FIGS. 5 to 7, it being understood that, for reasons of simplicity of drawings, it has been assumed that the contacts 14 were directly immobilized, by their tails 14e, in the housing 1.

Les contacts 14 présentent, à partir de la partie d'immobilisation 14a, un premier brin formant une branche descendante 14f s'éloignant progressivement de la carte de circuits imprimés 13 pour rejoindre, après un angle obtus, une partie rectiligne 14g. A l'extrémité de cette dernière, un renvoi à angle aigu forme un second brin 14h qui se rapproche donc de la carte de circuits imprimés 13 et présente à son extrémité une partie terminale 14i, le coude 14j reliant les parties 14h, 14i formant la zone de contact électrique proprement dite.The contacts 14 have, from the immobilization part 14a, a first strand forming a descending branch 14f progressively moving away from the printed circuit board 13 to join, after an obtuse angle, a straight part 14g. At the end of the latter, an acute angle return forms a second strand 14h which therefore approximates the printed circuit board. 13 and has at its end an end portion 14i, the elbow 14j connecting the portions 14h, 14i forming the actual electrical contact area.

Les alvéoles 6 des coulisseaux 5 présentent un fond muni, du côté postérieur, d'une première rampe inclinée 6a se poursuivant par un fond rectiligne 6b, après quoi un retour 6c forme une seconde partie en forme de rampe inclinée 6d orientée cette fois-ci vers le bas, contrairement à la partie de rampe 6a, l'alvéole débouchant à l'extérieur à l'extrémité de la partie de rampe 6d.The cells 6 of the slides 5 have a bottom provided, on the rear side, with a first inclined ramp 6a continuing with a rectilinear bottom 6b, after which a return 6c forms a second part in the form of an inclined ramp 6d oriented this time downwards, unlike the ramp part 6a, the cell opening to the outside at the end of the ramp part 6d.

Comme on le voit, les dimensions sont telles que,lorsque le coulisseau 5 est dans sa position postérieure d'ouverture, représentée sur la figure 5, la première partie de coulisseau 6a est éloignée du brin 14f de l'organe de contact élastique tandis que la partie de coulisseau 6c retient au contraire le brin incliné 14h de l'organe de contact élastique dans une position éloignée de la carte de circuits imprimés 13, et ceci en contrariant la force de rappel élastique du contact qui a tendance à vouloir ramener le contact 14j vers la carte de circuits imprimés.As can be seen, the dimensions are such that, when the slider 5 is in its rear open position, shown in FIG. 5, the first slider part 6a is distant from the strand 14f of the elastic contact member while the slide part 6c on the contrary retains the inclined strand 14h of the elastic contact member in a position remote from the printed circuit board 13, and this by counteracting the elastic return force of the contact which tends to want to bring the contact back 14d to the printed circuit board.

Lorsque, en manoeuvrant la réglette 7 correspondante, on déplace le coulisseau vers l'avant vers sa position de fermeture, comme représenté sur la figure 6, la seconde rampe de coulisseau 6d s'éloigne de la branche 14h qui peut donc se rapprocher de la carte de circuits imprimés 13, tandis que la première rampe 6a, venant au contact du brin 14f, le repousse en le faisant basculer autour du point de pivotement situé dans la zone 14a pour le rapprocher de la carte de circuits 13 de sorte que la zone de contact 14j vient s'appliquer contre la piste (non représentée) en regard de la carte de circuits imprimés 13.When, by operating the corresponding slide 7, the slide is moved forward towards its closed position, as shown in FIG. 6, the second slide ramp 6d moves away from the branch 14h which can therefore approach the printed circuit board 13, while the first ramp 6a, coming into contact with the strand 14f, repels it by tilting it around the pivot point located in the area 14a to bring it closer to the circuit board 13 so that the area contact 14j is applied against the track (not shown) facing the printed circuit board 13.

Si, à partir de ce moment, on poursuit encore le mouvement d'avance du coulisseau 5, la partie de rampe 6a ramène encore davantage le brin 14f en direction de l'horizontale et ouvre encore davantage l'angle entre les brins 14f et 14g de l'organe de contact élastique de sorte que, non seulement la partie de la zone de contact 14j se trouve appliquée avec davantage de force contre la piste de la carte de circuits imprimés 13 mais encore que se produise une modification de la longueur de l'organe 14, ce qui entraîne un coulissement à frottement de la zone 14j sur la carte de circuits imprimés sur un trajet l entre le point a où elle est venue la première fois s'appliquer contre la carte et le point b qui correspond à la position de contact extrême de fermeture, ce mouvement assurant donc l'auto-nettoyage des surfaces de contact.If, from this moment, the movement of the slide 5 is further advanced, the ramp part 6a brings the strand 14f even more towards the horizontal and further opens the angle between the strands 14f and 14g of the elastic contact member so that not only the part of the contact zone 14j is applied with more force against the track of the printed circuit board 13 but also that a modification of the length of the member 14, which causes a sliding friction of the zone 14j on the printed circuit board on a path l between the point a where it first came to apply against the card and the point b which corresponds to the extreme closing contact position, this movement thus ensuring self-cleaning of the contact surfaces.

Si, ensuite, on ramène le coulisseau 5 en direction opposée, le mouvement inverse se produit et la rampe de coulisseau 6d vient finalement au contact du brin 14h qui se trouve progressivement ramené vers le bas à l'écart de la carte de circuits imprimés jusque dans la position representée sur la figure 5 où tout risque de contact électrique entre la partie 14j et la carte de circuits imprimés est impossible.If, then, the slide 5 is brought back in the opposite direction, the reverse movement occurs and the slide ramp 6d finally comes into contact with the strand 14h which is gradually brought down away from the printed circuit board until in the position shown in Figure 5 where any risk of electrical contact between the part 14j and the printed circuit board is impossible.

Bien entendu, le dispositif représenté peut faire l'objet de nombreuses variantes.Of course, the device shown can be the subject of numerous variants.

En se référant plus particulièrement à la figure 8, on voit une variante dans laquelle un organe de contact élastique 15 présente un brin 15a s'étendant de façon rectiligne et sensiblement parallèlement à la carte de circuits imprimés 13 puis, après un coude faisant suite à la première branche 15a, une seconde branche 15b revenant sensiblement parallèlement à la branche 15a, cette branche 15b se poursuivant par une extrémité 15c. Le coulisseau 16, analogue au coulisseau 5, présente une première partie de coulisseau formant une rampe 16a qui est au contact de l'extrémité commençant à s'incurver de la branche 15a. L'alvéole dans lequel s'étendent les branches 15a et 15b de l'organe de contact présente également un bossage 16b qui, dans la position d'ouverture représentée à la partie inférieure de la figure 8, s'applique contre l'extrémité 15c de l'organe de contact élastique et empêche celui-ci, et par conséquent, également le brin 15b, de se rapprocher de la carte de circuits imprimés 13. Si on amène ensuite le coulisseau 16 vers la droite de la figure, comme représenté à la partie supérieure de la figure 8, on comprend que la partie 16a du logement repousse l'extrémité incurvée de la branche 15a vers le haut en direction de la carte de circuits imprimés tandis que le bossage 16b, en s'éloignant, libère progressivement la branche 15b, laquelle peut alors venir en contact avec la carte de circuits imprimés sur la piste correspondante, la poursuite du mouvement de la partie 16a du coulisseau provoquant simultanément un raccourcissement de la longueur de l'organe de contact 15 et, par conséquent, un frottement auto-nettoyant.Referring more particularly to FIG. 8, a variant is seen in which an elastic contact member 15 has a strand 15a extending in a rectilinear manner and substantially parallel to the printed circuit board 13 then, after an elbow following the first branch 15a, a second branch 15b returning substantially parallel to the branch 15a, this branch 15b continuing at one end 15c. The slider 16, similar to the slider 5, has a first part of the slider forming a ramp 16a which is in contact with the end starting to curve from the branch 15a. The cell in which the branches 15a and 15b of the contact member extend also has a boss 16b which, in the open position shown in the lower part of FIG. 8, bears against the end 15c from the organ ne elastic contact and prevents it, and therefore also the strand 15b, to approach the printed circuit board 13. If we then bring the slide 16 to the right of the figure, as shown in the upper part in FIG. 8, it can be understood that the part 16a of the housing pushes the curved end of the branch 15a upwards in the direction of the printed circuit board while the boss 16b, moving away, gradually releases the branch 15b, which can then come into contact with the printed circuit board on the corresponding track, the continued movement of the part 16a of the slider simultaneously causing a shortening of the length of the contact member 15 and, consequently, a self-friction cleaner.

L'assemblage d'un dispositif de connexion de l'invention s'effectue dé la façon suivante :

  • On forme et on plie les organes de contact, élastiques 14 sur une machine automatique qui, au fur et à mesure qu'un contact est formé, le monte avec un certain effort, en raison de la présence des nervures lle, dans les logements 11 de la pièce porte-contacts 10. La machine est prévue pour former alternativement des contacts correspondant aux parties de logement 11d et 11'd.
The assembly of a connection device of the invention is carried out as follows:
  • The elastic contact members 14 are formed and folded on an automatic machine which, as a contact is formed, assembles it with a certain effort, due to the presence of the ribs 11, in the housings 11 of the contact-carrying part 10. The machine is designed to alternately form contacts corresponding to the housing parts 11d and 11'd.

D'un autre côté, on met en place les deux réglettes 7 dans les rainures 2 du boîtier 1 de façon que les ouvertures des rainures 8 soient disposées au droit des rainures 4. Ensuite, on amène les deux coulisseaux 5 dans le boîtier 1 jusqu'à ce que les tétons 9, franchissant les canaux 4, pénètrent dans les rainures 8. Il est ainsi possible de déplacer longitudinalement les réglettes et de déplacer, en conséquence, les coulisseaux transversalement.On the other hand, the two strips 7 are put in place in the grooves 2 of the housing 1 so that the openings in the grooves 8 are arranged in line with the grooves 4. Next, the two slides 5 are brought into the housing 1 up to 'in that the pins 9, crossing the channels 4, enter the grooves 8. It is thus possible to move the strips longitudinally and to move, accordingly, the slides transversely.

Enfin, on met en place les deux porte-contact 10, munis de leurs organes de contact 14,par la face postérieure du boîtier, les réglettes 10 présentant également des prolongements en queue d'aronde pénétrant dans les rainures 3 à la suite des coulisseaux 5. Pendant ce mouvement, les parties mobiles des contacts 14 viennent se loger dans les alvéoles 6 des coulisseaux 5. Les réglettes porte-contacts 10, appliquées contre les épaulements lg, sont maintenus en place par collage, soudage aux ultra-sons ou tout autre moyen.Finally, the two contact carriers 10, fitted with their contact members 14, are put in place by the rear face of the housing, the strips 10 also having dovetail extensions penetrating into the grooves. res 3 following the slides 5. During this movement, the mobile parts of the contacts 14 are housed in the cells 6 of the slides 5. The contact carrier strips 10, applied against the shoulders lg, are held in place by bonding, ultrasonic welding or any other means.

En se référant à la figure 9, on a représenté une forme d'organe élastique permettant d'obtenir deux points de contact sur la piste de carte de circuits imprimés. L'organe de contact est constitué d'un fil et diffère de l'organe de contact 14 par le fait que l'extrémité libre et 14i se poursuit par un retour coudé/formant une branche ascendante 14k analogue à la branche d'extrémité 14i, un coude 141 formant le point de contact proprement dit et une branche terminale libre 14m descendante venant coopérer avec la rampe 6d de la même façon que la branche 14h. Le point de contact 141 doit normalement être situé à un niveau un peu supérieur ou au moins égal à celui du point 14j de façon que, lors de la pression, on soit certain qu'il vienne au contact de la piste.Referring to Figure 9, there is shown a form of elastic member for obtaining two contact points on the printed circuit board track. The contact member consists of a wire and differs from the contact member 14 by the fact that the free end and 14i continues with a bent return / forming an ascending branch 14k similar to the end branch 14i , an elbow 141 forming the actual contact point and a free downward branch 14m coming to cooperate with the ramp 6d in the same way as the branch 14h. The point of contact 141 should normally be located at a level slightly higher or at least equal to that of point 14j so that, when pressed, it is certain that it comes into contact with the track.

Claims (16)

1) Dispositif de connexion pour cartes de circuits imprimés, du type comprenant, dans un boîtier (1) présentant un côté ouvert d'introduction pour les cartes de circuits imprimés, au moins un ensemble (10) muni d'une rangée d'organes de contact élastiques (14, 15) orientés transversalement par rapport à la carte de circuits imprimés, et un mécanisme de commande (5, 7) mis à la disposition de l'opérateur ou d'un moyen d'actionnement et agissant sur lesdits organes élastiques (14, 15) d'une rangée par une pièce ou coulisseau mobile (5) pour assurer alternativement, dans un mouvement de fermeture, l'application des organes élastiques de contact (14, 15) contre les pistes de la carte de circuits imprimés selon un mouvement incluant une course de frottement auto-nettoyant, et dans un mouvement d'ouverture, l'écartement desdits organes élastiques de contact (14, 15) loin des pistes correspondantes de la carte de circuits imprimés, caractérisé en ce que les organes de contact (14, 15) présentent une forme d'ensemble généralement allongée s'étendant le long du plan de la carte de circuits imprimés, avec un premier brin (14f, 15a) permettant de repousser la partie mobile de l'organe de contact vers la carte de circuits imprimés lorsqu'il est sollicité par une première partie (6a, 16a d'une pièce de mécanisme ou coulisseau (5, 16) se déplaçant parallèlement au plan de la carte de circuits imprimés en direction de fermeture, et un deuxième brin (14h, 15b) éloigné du premier et susceptible de ramener ladite partie mobile de l'organe de contact dans sa position initiale, loin de la carte de circuits imprimés lorsqu'il est sollicité par une deuxième partie (6c, 16b) dudit coulisseau en direction inverse d'ouverture. 1 ) Connection device for printed circuit boards, of the type comprising, in a housing (1) having an open insertion side for printed circuit boards, at least one assembly (10) provided with a row of members of elastic contact (14, 15) oriented transversely to the printed circuit board, and a control mechanism (5, 7) made available to the operator or an actuating means and acting on said members elastic (14, 15) of a row by a movable piece or slide (5) to ensure alternately, in a closing movement, the application of the elastic contact members (14, 15) against the tracks of the circuit board printed in a movement including a self-cleaning friction stroke, and in an opening movement, the spacing of said elastic contact members (14, 15) away from the corresponding tracks of the printed circuit board, characterized in that the contact members (14, 15) present try a generally elongated overall shape extending along the plane of the printed circuit board, with a first strand (14f, 15a) making it possible to push the movable part of the contact member towards the printed circuit board when '' it is requested by a first part (6a, 16a of a piece of mechanism or slide (5, 16) moving parallel to the plane of the printed circuit board in the closing direction, and a second strand (14h, 15b) distant from the first and capable of returning said movable part of the contact member to its initial position, far from the printed circuit board when it is biased by a second part (6c, 16b) of said slide in the opposite direction of opening . 2) Dispositif selon la revendication 1, caractérisé en ce que l'organe de contact élastique (14) possède un premier brin (14f) s'étendant de façon inclinée progressivement à l'écart du plan de la carte de circuits imprimés et, à une certaine distance, un second brin (14h) se rapprochant progressivement de ladite carte en direction inverse de celle du premier brin, ledit second brin présentant, à son extrémité libre, la zone de contact proprement dite (14j).2) Device according to claim 1, characterized in that the elastic contact member (14) has a first strand (14f) extending gradually inclined away from the plane of the circuit board printed matter and, at a certain distance, a second strand (14h) progressively approaching said card in the opposite direction to that of the first strand, said second strand having, at its free end, the actual contact area (14d). 3) Dispositif selon la revendication 2, caractérisé en ce que l'organe de contact possède, entre les premier brin (14f) et second brin (14h), une partie rectiligne (14g) faisant un angle avec le premier brin (14f) tendant à s'ouvrir lors de la progression dudit premier relief (6a) du coulisseau (5) pour provoquer une augmentation de longueur de l'organe de contact faisant glisser la zone de contact (14j) sur un trajet (l) auto-nettoyant.3) Device according to claim 2, characterized in that the contact member has, between the first strand (14f) and second strand (14h), a straight portion (14g) making an angle with the first strand (14f) tending to open during the progression of said first relief (6a) of the slide (5) to cause an increase in length of the contact member causing the contact zone (14j) to slide over a self-cleaning path (l). 4) Dispositif selon la revendication 1, caractérisé en ce que l'organe de contact présente un premier brin (15a) sensiblement parallèle au plan de la carte de circuits imprimés et présentant une extrémité incurvée formant un coude auquel se rattache ledit second brin (15b) se dirigeant sensiblement parallèlement au premier brin, le coulisseau (16) présentant une rampe (16a) susceptible de repousser progressivement l'extrémité incurvée du premier brin (15a) vers la carte de circuits imprimés, dans le mouvement de fermeture, et un relief ou bossage (16b) maintenant normalement ledit second brin (15b) à l'écart de la carte de circuits imprimés et l'autorisant à s'en rapprocher lors du mouvement de fermeture du coulisseau. 4 ) Device according to claim 1, characterized in that the contact member has a first strand (15a) substantially parallel to the plane of the printed circuit board and having a curved end forming a bend to which said second strand (15b) is attached ) running substantially parallel to the first strand, the slide (16) having a ramp (16a) capable of gradually pushing the curved end of the first strand (15a) towards the printed circuit board, in the closing movement, and a relief or boss (16b) normally keeping said second strand (15b) away from the printed circuit board and allowing it to approach it during the closing movement of the slider. 5) Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les organes de contact élastiques sont montés dans une réglette porte-contacts (10) munie de logements (11) comprenant des fentes axialement et dans dont le fond est conformé de façon à immobiliser / leur plan les organes de contact élastiques eux-mêmes conformés de façon correspondante.5) Device according to any one of claims 1 to 4, characterized in that the elastic contact members are mounted in a contact carrier strip (10) provided with housings (11) comprising slots axially and in which the bottom is shaped so as to immobilize / their plane the elastic contact members themselves shaped correspondingly. 6) Dispositif selon la revendication 5, caractérisé en ce que lesdits logements présentent des moyens de nervures (11e) permettant le serrage des organes de contact élastiques (14) dans lesdits logements (11) et leur immobilisation contre une paroi de référence du logement.6) Device according to claim 5, characterized in that said housings have rib means (11e) for tightening the members of elastic contact (14) in said housings (11) and their immobilization against a reference wall of the housing. 7) Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les organes de contacts élastiques (14) sont montés dans des réglettes porte- contacts (10) présentant des logements (11) dont la profondeur, au niveau des sorties de queue de contact, varie de façon alternée pour présenter les queues à des niveaux alternés.7) Device according to any one of claims 1 to 6, characterized in that the elastic contact members (14) are mounted in contact carrier strips (10) having housings (11) whose depth, at the contact tail outputs, varies alternately to present the tails at alternate levels. 8) Dispositif selon l'une quelconque des revendications 1 à 7, caractérisé en ce que les organes de contact élastiques (14) forment deux rangées disposées de part et d'autre de la carte de circuits imprimés, lesdites rangées étant montées dans deux réglettes porte-contacts (10) disposées de part et d'autre du plan de la carte de circuits imprimés et présentant des prolongements (12) dont l'ensemble forme un logement de guidage et de maintien pour l'extrémité de la carte de circuits imprimés.8) Device according to any one of claims 1 to 7, characterized in that the elastic contact members (14) form two rows arranged on either side of the printed circuit board, said rows being mounted in two strips contact carriers (10) arranged on either side of the plane of the printed circuit board and having extensions (12), the assembly of which forms a guide and holding housing for the end of the printed circuit board . 9) Dispositif selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le ou les coulisseaux (5) pourvus de leurs alvéoles (6) recevant les parties libres des organes de contacts (14) sont montés pour coulisser dans le boîtier (1), par des guidages à queue d'aronde (3, 5a).9) Device according to any one of claims 1 to 8, characterized in that the slide (s) (5) provided with their cells (6) receiving the free parts of the contact members (14) are mounted to slide in the housing (1), by dovetail guides (3, 5a). 10) Dispositif selon la revendication 9, caractérisé en ce que le mécanisme comporte, pour chaque coulisseau (5), une réglette (7) se déplaçant dans un guidage à queue d'aronde (2), des moyens de pions et rainures (8, 9) transmettant le mouvement de la réglette (7) au coulisseau (5).10) Device according to claim 9, characterized in that the mechanism comprises, for each slide (5), a strip (7) moving in a dovetail guide (2), means of pins and grooves (8 , 9) transmitting the movement of the strip (7) to the slide (5). 11) Dispositif selon l'une des revendications 9 et 10, caractérisé en ce que les organes de contact élastiques (14) sont montés dans des réglettes porte-contact (10) maintenues dans le boîtier (1) par le même guidage du type queue d'aronde (3), des moyens de buté (1g) assurant l'immobilisation desdites réglettes (10).11) Device according to one of claims 9 and 10, characterized in that the elastic contact members (14) are mounted in contact carrier strips (10) held in the housing (1) by the same guide of the tail type. dovetail (3), stop means (1g) ensuring the immobilization of said strips (10). 12) Dispositif selon la revendication 11, caractérisé en ce que ledit guidage à queue d'aronde (3) comporte une rainure (4) débouchant sur la face arrière du boîtier (1) pour le passage des pions (9) de coulisseau (5).12) Device according to claim 11, characterized in that said dovetail guide (3) has a groove (4) opening onto the rear face of the housing (1) for the passage of the slider pins (9) (5 ). 13) Dispositif selon l'une des revendications 8 à 12, caractérisé en ce qu'il comporte deux réglettes porte-contact (10) appliquées l'une contre l'autre et ayant exactement la même forme, lesdites réglettes étant décalées l'une par rapport à l'autre de façon que les logements (11) de réglettes soient décalés les uns par rapport aux autres.13) Device according to one of claims 8 to 12, characterized in that it comprises two contact carrier strips (10) applied one against the other and having exactly the same shape, said strips being offset one relative to each other so that the slider housings (11) are offset from each other. 14) Dispositif selon l'une quelconque des revendications 1 à 13, caractérisé en ce que les différentes pièces telles que boîtier (1), coulisseau (5), réglette de mécanisme (7) et réglette porte-contact (10) sont réalisées en matière plastique injectée.14) Device according to any one of claims 1 to 13, characterized in that the different parts such as housing (1), slide (5), mechanism strip (7) and contact carrier strip (10) are made of injected plastic. 15) Dispositif selon la revendication précédente, caractérisé en ce que la réglette de mécanisme (7) présente une rainure (8) venant d'injection et n'occupant qu'une partie de l'épaisseur de la réglette.15) Device according to the preceding claim, characterized in that the mechanism strip (7) has a groove (8) coming from injection and occupying only part of the thickness of the strip. 16) Dispositif selon l'une quelconque des revendications 1 à 3, 5 à 15, caractérisé en ce que le second brin (14h) se poursuit, au delà du point de contact (14j),,par une branche (14i) s'écartant de la carte de circuits imprimés et se prolongeant par un retour coudé en arrière (14k) aboutissant à un deuxième point de contact (141) se poursuivant par une branche terminale (14m) s'étendant au voisinage dudit second brin (14h) pour coopérer, comme lui, avec ladit deuxième partie (6c) du coulisseau, l'organe de contact (14) étant réalisé en fil.16) Device according to any one of claims 1 to 3, 5 to 15, characterized in that the second strand (14h) continues, beyond the point of contact (14d), by a branch (14i) s' moving away from the printed circuit board and extending by a bent return backward (14k) leading to a second contact point (141) continuing with a terminal branch (14m) extending in the vicinity of said second strand (14h) for cooperate, like him, with said second part (6c) of the slide, the contact member (14) being made of wire.
EP85401791A 1984-09-18 1985-09-17 Connecting devices for printed-circuit boards Expired EP0178974B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85401791T ATE34887T1 (en) 1984-09-18 1985-09-17 CONNECTING DEVICES FOR PRINTED CIRCUITS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8414250A FR2570550B1 (en) 1984-09-18 1984-09-18 IMPROVEMENTS IN CONNECTION DEVICES FOR PRINTED CIRCUIT BOARDS
FR8414250 1984-09-18

Publications (2)

Publication Number Publication Date
EP0178974A1 true EP0178974A1 (en) 1986-04-23
EP0178974B1 EP0178974B1 (en) 1988-06-01

Family

ID=9307797

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85401791A Expired EP0178974B1 (en) 1984-09-18 1985-09-17 Connecting devices for printed-circuit boards

Country Status (6)

Country Link
US (1) US4669795A (en)
EP (1) EP0178974B1 (en)
JP (1) JPS6177289A (en)
AT (1) ATE34887T1 (en)
DE (1) DE3563156D1 (en)
FR (1) FR2570550B1 (en)

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EP0307521A1 (en) * 1987-09-15 1989-03-22 E.I. Du Pont De Nemours And Company Zero insertion force connector
EP0505744A2 (en) * 1991-03-28 1992-09-30 Richard Hirschmann GmbH & Co. Connector for a printed circuit board

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AU600026B2 (en) * 1987-09-16 1990-08-02 E.I. Du Pont De Nemours And Company Zero insertion force connector
DE69720286D1 (en) * 1996-06-28 2003-04-30 Synapse Tech Inc MECHANISM WITH BUTTON AND SWALLOW TAIL TO ACTIVATE A CONNECTOR
JP2006085903A (en) * 2004-08-19 2006-03-30 Fujitsu Component Ltd Contact member for planate wiring member and connector having the same
US7641777B2 (en) * 2004-09-07 2010-01-05 Roche Diagnostics Operations, Inc. Biological testing system
JP2014229377A (en) * 2013-05-20 2014-12-08 矢崎総業株式会社 Connector
JP7097300B2 (en) 2016-11-30 2022-07-07 古河電気工業株式会社 Electrical connection cassette
JP7303985B2 (en) * 2019-12-02 2023-07-06 株式会社オートネットワーク技術研究所 connector
JP7303984B2 (en) * 2019-12-02 2023-07-06 株式会社オートネットワーク技術研究所 card edge connector

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EP0307521A1 (en) * 1987-09-15 1989-03-22 E.I. Du Pont De Nemours And Company Zero insertion force connector
EP0505744A2 (en) * 1991-03-28 1992-09-30 Richard Hirschmann GmbH & Co. Connector for a printed circuit board
EP0505744A3 (en) * 1991-03-28 1993-01-13 Richard Hirschmann Gmbh & Co. Connector for a printed circuit board

Also Published As

Publication number Publication date
US4669795A (en) 1987-06-02
JPS6177289A (en) 1986-04-19
DE3563156D1 (en) 1988-07-07
FR2570550B1 (en) 1986-12-05
EP0178974B1 (en) 1988-06-01
ATE34887T1 (en) 1988-06-15
FR2570550A1 (en) 1986-03-21

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