EP0427630B1 - Shielded electrical connector - Google Patents

Shielded electrical connector Download PDF

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Publication number
EP0427630B1
EP0427630B1 EP19900403168 EP90403168A EP0427630B1 EP 0427630 B1 EP0427630 B1 EP 0427630B1 EP 19900403168 EP19900403168 EP 19900403168 EP 90403168 A EP90403168 A EP 90403168A EP 0427630 B1 EP0427630 B1 EP 0427630B1
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EP
European Patent Office
Prior art keywords
shielding
shell
connector element
insulating block
shells
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19900403168
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German (de)
French (fr)
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EP0427630A1 (en
Inventor
Hervé Bricaud
Jean-Francois Lescoat
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ITT Composants et Instruments SA
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ITT Composants et Instruments SA
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Publication of EP0427630A1 publication Critical patent/EP0427630A1/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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6581—Shield structure

Definitions

  • the present invention relates to a shielded electrical connector element of the type comprising an insulating connector block comprising several cells in which electrical contact elements are received and which extends from its front face towards the rear of the connector element to the interior of a shielding box made up of two metallic shielding shells, respectively upper and lower, of complementary shapes to surround the insulating block and whose front free edges include lugs in notches formed in the outline d '' a rear metal connector shell which surrounds and cooperates with an edge projecting outwards from the front part of the insulating block, the upper and lower shielding shells each having a side wall which are parallel and turned towards one another 'other.
  • Electrical connectors of this type are for example described and represented in the documents WO-A-8,505,230, US-A-4,585,292, US-A-4,582,384 and EP-A-0.180.594.
  • the rear metal shell of the connector which surrounds the front face of the insulating block and which is designed to allow it to be fixed for example on a mounting plate and the connection to a complementary connector element , has been modified, and in particular has an increased thickness, to allow the attachment of the fixing lugs.
  • the rear shells are no longer of standardized dimensions which allow standard mounting in panel openings, for example of a "rack" comprising standardized openings intended to receive connectors of the corresponding series.
  • the contacting pressure of the two shells against the contour of the shell is provided by a spacer effect of the insulating block between the shells, which deforms the insulating block.
  • this type of connector is designed to receive a hot overmolded layer of plastic to make it moisture-proof.
  • a very strong pressure is applied on the upper and lower shells which has the consequence of causing a partial crushing of the insulating block. If vents are provided to avoid the crushing phenomenon, the hot overmolding material penetrates inside the connector and can cause the insulating sheaths of the electrical wires connected to the electrical contact elements to melt and the flows of insulating material can deform the walls.
  • the shielding box has only a very low mechanical resistance both lateral and vertical.
  • This design allows precise relative positioning of the two shells, but it does not make it possible to collect the forces transmitted to the side walls sufficiently during overmolding, nor to ensure perfect electrical continuity and optimal shielding.
  • the invention provides a connector element of the type described and shown in document US-A-4,582,384, as defined in the preamble to the main claim, characterized in that the side wall of the lower shielding shell has a peripheral recess directed towards the inside of the housing which delimits a bearing edge of the peripheral free edge of the side wall of the upper shielding shell when the two side walls are fitted one into the other, in that the side wall of the lower shielding shell extends beyond said recess, parallel to itself, in the direction of the plane bottom of the upper shielding shell, and in that the peripheral free edge of this side wall bears against said flat bottom.
  • FIGs 1 to 5 there is shown in Figures 1 to 5 an upper shielding shell 10 and a lower shielding shell 12 intended to be associated to form a shielding housing of an electrical connector element comprising in particular an insulating block 14 intended to receive elements of electrical contact 16 arranged in cells 18 of the insulating block (see Figure 10).
  • the upper shell 10 essentially consists of a flat bottom 20 of substantially rectangular shape, the front free edge 22 of which is provided with five hooking tabs 24.
  • the other edges of the flat bottom 20 extend at right angles, towards the bottom considering FIG. 1, by a peripheral lateral wall 26.
  • the upper shell of shielding 10 comprises a semi-cylindrical portion 28 intended to receive the electrical wires 30 connected to the electrical contact elements 16 and the shielding braid on the outside.
  • the flat bottom 20 comprises a reinforcement boss 32 which projects outwards from the shielding shell, which is of substantially rectangular shape and whose length is parallel to the free front edge 22.
  • the boss 32 is arranged (see FIG. 5) in the area of the insulating block 14 which receives the uppermost portions of the electrical contact elements 16 this so as to provide a large space between the internal face 34 of the reinforcement boss 32 and the electrical contact elements 16 to avoid any phenomenon of electrical breakdown.
  • the two rearward facing portions of the side wall 26 each have an opening 36 designed to receive a locking lug of the shielding box.
  • a flat bottom 38 delimited by its front edge 40, its side wall 42, its rear semi-cylindrical portion 44, and having a reinforcement boss projecting outwards. 46. It also has five hooking lugs 48.
  • the side wall 42 of the lower shielding shell 12 has a first portion 50 substantially symmetrical with the side wall 26 which is delimited by a peripheral recess 52 beyond which it is extended by a second side wall portion 54 which is parallel to the first part 50 but offset inwardly so as to allow it to fit inside the side wall 26.
  • the second part 54 has in its two portions rear of the locking pins 56 provided to be received in the openings 36.
  • the two semi-cylindrical portions 28 and 44 receive, after assembly of the connector, a closing ring 58 before the final crimping operation.
  • Each of the two shielding shells is produced by stamping a sheet.
  • reinforcement bosses 32 and 46 are rigid enough to transmit the forces which will be applied to them during the final overmolding operation of a plastic sealing material to the side walls.
  • peripheral end edge 62 of the side wall 26 bears against the recess 52 of the side wall 42 of the lower shielding shell 12.
  • This double bearing effect allows the forces transmitted to the side walls to be absorbed during overmolding and to ensure perfect electrical continuity and optimal shielding.
  • the arrangement in the nested position of the two shielding shells 10 and 12 therefore provides, on the one hand, very good electrical shielding to the stray fields due to the superposition of the side wall 26 with the second portion of, side wall 54 and, on the other hand, very good electrical contact by the bearing edges.
  • the interior faces of the flat bottoms 20 and 38 envelop the insulating block 14, as can be seen in FIG. 5, but without applying any force to it.
  • each latch 24 or 48 has a particular profile. This profile will be described with reference to the lower hooking lug 48 shown in FIG. 5.
  • the tab 48 has an L-shaped profile.
  • a first branch 66 extends horizontally from the free front edge 40 of the lower shell 12 and is extended towards the outside of the housing by a second branch at right angles 68.
  • the first branch 66 is of reduced thickness compared to that of the sheet constituting the shell, as is the second branch 68 whose thickness is equal to that of the first branch. This reduction in thickness is obtained during the cutting-stamping operation of the shell by crushing the sheet, which causes a phenomenon of work hardening which notably increases the resistance characteristics of the sheet in the area of the lugs. .
  • the first branch 66 in cooperation with the second branch 68, and because of its reduced thickness, constitutes a U-shaped notch which is designed to receive the edge 70 opposite a corresponding notch 72 formed in the contour 74 of the rear standardized metal shell 76 of the connector element (see FIG. 6).
  • the free edge of the second branch 68 cooperates with a curved zone of the sheet of the rear shell 76 which provides an effect of wedging and retaining the edge 70 in the U-shaped notch.
  • the assembled housing itself forms a very rigid and homogeneous shell as soon as it is assembled, regardless of the presence of an overmolding.
  • each of the hooking lugs is received in a recess 80 formed in the face 82 facing the rear of the front part 84 of the insulating block 14 and away from the front face 17 of the latter.
  • the insulating block 14 naturally comprises on either side of its longitudinal median plane, a number of recesses 80 equal to those of the legs 24 and 48.
  • the recesses 80 facilitate the insertion of the hooking lugs when assembling the upper and lower shielding shells on the sub-assembly shown. in FIG. 10, this assembly being carried out in a conventional manner by introduction of the hooking lugs into the holes 82 delimited by the recesses 80 and the notches 72 then by pivoting of the shells around the hooking lugs until they are brought into the position shown in Figures 4 and 5.
  • the hooking lugs being arranged symmetrically in pairs in one and the other, the two shielding shells 10 and 12 can possibly be produced using the same starting tool on which it it suffices to add a punch to eliminate the portion of sheet metal corresponding to the second part 54 of the side wall 50 as well as two punches for cutting the holes 36.
  • the symmetrical design of the shells 10 and 12 allows indifferent mounting in place of one another, the lower and upper terminology being used only for writing convenience.
  • This indifferent assembly is particularly advantageous in the case where the shells have bent rear cable outlets relative to their direction of insertion, since the same set of two complementary shells makes it possible to produce a bend on the left or a bend on the right.
  • the shell formed by the shielding shells and the rear shell is very homogeneous and resistant, both laterally due to the cooperation of the side walls, and vertically due to the edges pressing against the bottoms and the recess, and only longitudinally due to the notches received in the U-shaped notches of the hanging tabs.

Description

La présente invention concerne un élément de connecteur électrique blindé du type comportant un bloc isolant de connecteur comportant plusieurs alvéoles dans lesquels sont reçus des éléments de contact électrique et qui s'étend depuis sa face avant vers l'arrière de l'élément de connecteur à l'intérieur d'un boîtier de blindage constitué de deux coquilles métalliques de blindage, respectivement supérieure et inférieure, de formes complémentaires pour entourer le bloc isolant et dont les bords libres avant comportent des pattes d'accrochage dans des encoches formées dans le contour d'une coquille métallique arrière de connecteur qui entoure et coopère avec un bord en saillie vers l'extérieur de la partie avant du bloc isolant, les coquilles de blindage supérieure et inférieure comportant chacune une paroi latérale qui sont parallèles et tournées l'une vers l'autre.The present invention relates to a shielded electrical connector element of the type comprising an insulating connector block comprising several cells in which electrical contact elements are received and which extends from its front face towards the rear of the connector element to the interior of a shielding box made up of two metallic shielding shells, respectively upper and lower, of complementary shapes to surround the insulating block and whose front free edges include lugs in notches formed in the outline d '' a rear metal connector shell which surrounds and cooperates with an edge projecting outwards from the front part of the insulating block, the upper and lower shielding shells each having a side wall which are parallel and turned towards one another 'other.

Des connecteurs électriques de ce type sont par exemple décrits et représentés dans les documents WO-A-8 505 230, US-A-4.585.292, US-A-4.582.384 et EP-A-0.180.594.Electrical connectors of this type are for example described and represented in the documents WO-A-8,505,230, US-A-4,585,292, US-A-4,582,384 and EP-A-0.180.594.

Dans les connecteurs décrits dans ces documents, on constate que la coquille métallique arrière du connecteur qui entoure la face avant du bloc isolant et qui est prévue pour en permettre la fixation par exemple sur une plaque de montage et le raccordement à un élément de connecteur complémentaire, a été modifiée, et notamment présente une épaisseur augmentée, pour permettre l'accrochage des pattes de fixation. Du fait de cette modification, les coquilles arrière ne sont plus aux dimensions normalisées qui en permettent un montage standard dans des ouvertures de panneau, par exemple d'un "rack" comportant des ouvertures normalisées prévues pour recevoir des connecteurs de la série correspondante.In the connectors described in these documents, it can be seen that the rear metal shell of the connector which surrounds the front face of the insulating block and which is designed to allow it to be fixed for example on a mounting plate and the connection to a complementary connector element , has been modified, and in particular has an increased thickness, to allow the attachment of the fixing lugs. As a result of this modification, the rear shells are no longer of standardized dimensions which allow standard mounting in panel openings, for example of a "rack" comprising standardized openings intended to receive connectors of the corresponding series.

On constate de plus que les deux parois latérales des coquilles inférieure et supérieure ne présentent pas une bonne continuité électrique dans leur zone de jonction et qu'ainsi la fonction de blindage n'est pas correctement assurée.We also note that the two walls sides of the lower and upper shells do not have good electrical continuity in their junction zone and that the shielding function is therefore not properly ensured.

Il n'y a pas de continuité du métal dans les zones de jonction et l'effet de blindage contre les champs parasites n'est pas suffisant.There is no continuity of the metal in the junction zones and the shielding effect against the stray fields is not sufficient.

La pression de mise en contact des deux coquilles contre le contour de la coquille est assurée par un effet d'entretoise du bloc isolant entre les coquilles, ce qui déforme le bloc isolant.The contacting pressure of the two shells against the contour of the shell is provided by a spacer effect of the insulating block between the shells, which deforms the insulating block.

De plus ce type de connecteur est prévu pour recevoir une couche surmoulée à chaud de matière plastique pour le rendre étanche à l'humidité. Lors du surmoulage, une pression très forte s'applique sur les coquilles supérieure et inférieure ce qui a pour conséquence de provoquer un écrasement partiel du bloc isolant. Si l'on prévoit des évents pour éviter le phénomène d'écrasement, le matériau chaud de surmoulage pénètre à l'intérieur du connecteur et peut provoquer la fusion des gaines isolantes des fils électriques raccordés aux éléments de contact électrique et les flux de matériau isolant peuvent déformer les parois.In addition, this type of connector is designed to receive a hot overmolded layer of plastic to make it moisture-proof. During the overmolding, a very strong pressure is applied on the upper and lower shells which has the consequence of causing a partial crushing of the insulating block. If vents are provided to avoid the crushing phenomenon, the hot overmolding material penetrates inside the connector and can cause the insulating sheaths of the electrical wires connected to the electrical contact elements to melt and the flows of insulating material can deform the walls.

Pour résister aux pressions de surmoulage il a également été proposé de prévoir des bossages de renfort parallèles aux bords libres avant des coquilles qui sont en saillie vers l'intérieur du boîtier. Ces bossages prennent appui sur le bloc isolant dans la zone des éléments de contact électrique insérés dans les alvéoles du bloc auquel ils transmettent les efforts sur une faible surface et sont très près de ces éléments de contact. Il en résulte un risque de claquage électrique et de court-ciruit.To resist the molding pressures, it has also been proposed to provide reinforcement bosses parallel to the free front edges of the shells which protrude towards the inside of the housing. These bosses bear on the insulating block in the area of the electrical contact elements inserted in the cells of the block to which they transmit the forces over a small area and are very close to these contact elements. This results in a risk of electrical breakdown and short-circuiting.

Sans le surmoulage, le boîtier de blindage n'a qu'une très faible tenue mécanique tant latérale que verticale.Without the overmolding, the shielding box has only a very low mechanical resistance both lateral and vertical.

Il a déjà été proposé dans le document DE-U-8.625.668 une conception selon laquelle les deux parois latérales des coquilles inférieure et supérieure sont emboîtées l'une dans l'autre et une paroi latérale de chaque coquille de blindage comporte un décrochement périphérique dirigé vers l'intérieur du boîtier qui délimite un bord d'appui pour le bord libre périphérique de la paroi latérale correspondante de l'autre coquille.It has already been proposed in document DE-U-8,625,668 a design according to which the two side walls of the lower and upper shells are nested one inside the other and a side wall of each shielding shell comprises a peripheral recess directed towards the inside of the housing which delimits a bearing edge for the peripheral free edge of the corresponding side wall of the other shell.

Cette conception permet un positionnement relatif précis des deux coquilles, mais elle ne permet pas d'encaisser de manière suffisante les efforts transmis aux parois latérales lors du surmoulage, ni d'assurer une parfaite continuité électrique et un blindage optimal.This design allows precise relative positioning of the two shells, but it does not make it possible to collect the forces transmitted to the side walls sufficiently during overmolding, nor to ensure perfect electrical continuity and optimal shielding.

Afin de remédier à ces inconvénients, l'invention propose un élément de connecteur du type de celui décrit et représenté dans le document US-A-4.582.384, tel que défini au préambule de la revendication principale, caractérisé en ce que la paroi latérale de la coquille de blindage inférieure comporte un décrochement périphérique dirigé vers l'intérieur du boîtier qui délimite un bord d'appui du bord libre périphérique de la paroi latérale de la coquille de blindage supérieure lorsque les deux parois latérales sont emboîtées l'une dans l'autre, en ce que la paroi latérale de la coquille inférieure de blindage s'étend au-delà dudit décrochement, parallèlement à elle-même, en direction du fond plan de la coquille de blindage supérieure, et en ce que le bord libre périphérique de cette paroi latérale est en appui contre ledit fond plan.In order to remedy these drawbacks, the invention provides a connector element of the type described and shown in document US-A-4,582,384, as defined in the preamble to the main claim, characterized in that the side wall of the lower shielding shell has a peripheral recess directed towards the inside of the housing which delimits a bearing edge of the peripheral free edge of the side wall of the upper shielding shell when the two side walls are fitted one into the other, in that the side wall of the lower shielding shell extends beyond said recess, parallel to itself, in the direction of the plane bottom of the upper shielding shell, and in that the peripheral free edge of this side wall bears against said flat bottom.

Selon d'autres caractéristiques de l'invention :

  • chacune des deux coquilles de blindage comporte un fond plan qui enveloppe une face correspondante du bloc isolant délimitée par les bords des cloisons délimitant lesdit alvéoles qui reçoivent les éléments de contact électrique, sans appliquer d'efforts au bloc isolant, et chaque fond plan comporte un bossage de renfort en saillie vers l'extérieur du boîtier de blindage et parallèle au bord libre avant de la coquille ;
  • chacune des pattes d'accrochage présente en section un profil en forme de L dont un première branche est parallèle au fond plan de la coquille et s'étend depuis le bord libre avant de ce dernier et dont la seconde branche est orientée vers l'extérieur du boîtier, chaque patte étant reçu dans un évidement de forme complémentaire agencé dans la face tournée vers l'arrière du bord en saillie de la partie avant du bloc isolant ;
  • la première branche de la patte d'accrochage en L possède une épaisseur inférieure à celle de la tôle dans laquelle est formée la coquille pour délimiter un cran de retenue tourné vers l'extérieur du boîtier dans lequel est reçu le bord d'extrémité délimitant l'encoche correspondante formée dans le contour de la coquille métallique arrière ;
  • le cran d'épaisseur réduite est réalisé par écrasement de la tôle dans la zone correspondante lors de l'opération d'emboutissage de la coquille de manière à provoquer un écrouissage du métal dans cette zone ; et
  • les pattes d'accrochage de chacune des coquilles de blindage sont en nombre égal et elles sont agencées par paires en vis-à-vis les unes des autres pour permettre un montage indifférent des coquilles de blindage supérieure et inférieure sur la coquille arrière du connecteur.
According to other characteristics of the invention:
  • each of the two shielding shells has a flat bottom which envelops a corresponding face of the insulating block delimited by the edges of the partitions delimiting the said cells which receive the elements of electrical contact, without applying any force to the insulating block, and each flat bottom comprises a reinforcement boss projecting towards the outside of the shielding box and parallel to the free front edge of the shell;
  • each of the attachment tabs has an L-shaped profile in section, a first branch of which is parallel to the flat bottom of the shell and extends from the free front edge of the latter and the second branch of which is oriented outwards of the housing, each tab being received in a recess of complementary shape arranged in the face facing the rear of the projecting edge of the front part of the insulating block;
  • the first branch of the L-shaped lug has a thickness less than that of the sheet in which the shell is formed to delimit a retaining notch turned towards the outside of the housing in which is received the end edge delimiting l 'corresponding notch formed in the contour of the rear metal shell;
  • the notch of reduced thickness is produced by crushing the sheet in the corresponding zone during the stamping operation of the shell so as to cause the metal to harden in this zone; and
  • the attachment tabs of each of the shielding shells are equal in number and they are arranged in pairs opposite one another to allow indifferent mounting of the upper and lower shielding shells on the rear shell of the connector.

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui va suivre pour la compréhension de laquelle on se reportera aux dessins annexés dans lesquels :

  • La figure 1 est une vue en perspective éclatée à grande échelle des coquilles de blindage supérieure et inférieure et de leur virole de fermeture ;
  • la figure 2 est une vue en plan de l'intérieur de la coquille de blindage supérieure ;
  • la figure 3 est une vue en plan de l'intérieur de la coquille de blindage inférieure ;
  • la figure 4 est une vue en demi-coupe selon la ligne 4-4 de la figure 3 des coquilles de blindage supérieure et inférieure en position emboîtées l'une dans l'autre ;
  • la figure 5 est une vue en coupe selon la ligne 5-5 de la figure 4 sur laquelle on a représenté partiellement le bloc isolant de l'élément de connecteur et sa coquille métallique arrière ;
  • la figure 6 est une vue en plan de la coquille métallique arrière de l'élément de connecteur selon l'invention ;
  • la figure 7 est une vue simplifiée selon la flèche F7 de la figure 5 du bloc isolant de l'élément de connecteur ;
  • la figure 8 est une vue de dessus du bloc isolant de la figure 7 ;
  • la figure 9 est une vue en coupe partielle selon la ligne 9-9 de la figure 7 ; et
  • la figure 10 est une vue en perspective avec arrachement partiel, du bloc isolant et de la coquille métallique arrière de l'élément de connecteur avec représentation d'un des éléments de contact électrique dans son alvéole correspondant.
Other characteristics and advantages of the invention will appear on reading the detailed description which follows for the understanding of which reference will be made to the appended drawings in which:
  • Figure 1 is an exploded perspective view on a large scale of the upper and lower shielding shells and their closing ring;
  • Figure 2 is a plan view of the interior of the upper shielding shell;
  • Figure 3 is a plan view of the interior of the lower shielding shell;
  • Figure 4 is a half-sectional view along line 4-4 of Figure 3 of the upper and lower shielding shells in the nested position one in the other ;
  • Figure 5 is a sectional view along line 5-5 of Figure 4 in which there is partially shown the insulating block of the connector element and its rear metal shell;
  • Figure 6 is a plan view of the rear metal shell of the connector element according to the invention;
  • Figure 7 is a simplified view along arrow F7 of Figure 5 of the insulating block of the connector element;
  • Figure 8 is a top view of the insulating block of Figure 7;
  • Figure 9 is a partial sectional view along line 9-9 of Figure 7; and
  • Figure 10 is a perspective view with partial cutaway, of the insulating block and the rear metal shell of the connector element with representation of one of the electrical contact elements in its corresponding cell.

On a représenté aux figures 1 à 5 une coquille de blindage supérieure 10 et une coquille de blindage inférieure 12 prévues pour être associées pour former un boîtier de blindage d'un élément de connecteur électrique comportant notamment un bloc isolant 14 prévu pour recevoir des éléments de contact électrique 16 agencés dans des alvéoles 18 du bloc isolant (voir figure 10).There is shown in Figures 1 to 5 an upper shielding shell 10 and a lower shielding shell 12 intended to be associated to form a shielding housing of an electrical connector element comprising in particular an insulating block 14 intended to receive elements of electrical contact 16 arranged in cells 18 of the insulating block (see Figure 10).

La coquille supérieure 10 est constituée pour l'essentiel par un fond plan 20 de forme sensiblement rectangulaire dont le bord libre avant 22 est muni de cinq pattes d'accrochage 24. Les autres bords du fond plan 20 se prolongent à angle droit, vers le bas en considérant la figure 1, par une paroi latérale périphérique 26.The upper shell 10 essentially consists of a flat bottom 20 of substantially rectangular shape, the front free edge 22 of which is provided with five hooking tabs 24. The other edges of the flat bottom 20 extend at right angles, towards the bottom considering FIG. 1, by a peripheral lateral wall 26.

A sa partie arrière, la coquille supérieure de blindage 10 comporte une portion semi-cylindrique 28 prévue pour recevoir les fils électriques 30 raccordés aux éléments de contact électrique 16 et la tresse de blindage à l'extérieur.At its rear part, the upper shell of shielding 10 comprises a semi-cylindrical portion 28 intended to receive the electrical wires 30 connected to the electrical contact elements 16 and the shielding braid on the outside.

Le fond plan 20 comporte un bossage de renfort 32 qui fait saillie vers l'extérieur de la coquille de blindage, qui est de forme sensiblement rectangulaire et dont la longueur est parallèle au bord libre avant 22. Conformément à un aspect de l'invention, le bossage 32 est agencé (voir figure 5) dans la zone du bloc isolant 14 qui reçoit les portions les plus hautes des éléments de contact électrique 16 ceci de manière à ménager un espace important entre la face interne 34 du bossage de renfort 32 et les éléments de contact électrique 16 pour éviter tout phénomène de claquage électrique.The flat bottom 20 comprises a reinforcement boss 32 which projects outwards from the shielding shell, which is of substantially rectangular shape and whose length is parallel to the free front edge 22. According to one aspect of the invention, the boss 32 is arranged (see FIG. 5) in the area of the insulating block 14 which receives the uppermost portions of the electrical contact elements 16 this so as to provide a large space between the internal face 34 of the reinforcement boss 32 and the electrical contact elements 16 to avoid any phenomenon of electrical breakdown.

Les deux portions tournées vers l'arrière de la paroi latérale 26 comportent chacune une ouverture 36 prévue pour recevoir un ergot de verrouillage du boîtier de blindage.The two rearward facing portions of the side wall 26 each have an opening 36 designed to receive a locking lug of the shielding box.

D'une manière symétrique on retrouve sur la demi-coquille inférieure 12 un fond plan 38 délimité par son bord avant 40, sa paroi latérale 42, sa portion semi-cylindrique arrière 44, et comportant un bossage de renfort en saillie vers l'extérieur 46. Il comporte également cinq pattes d'accrochage 48.Symmetrically, there is found on the lower half-shell 12 a flat bottom 38 delimited by its front edge 40, its side wall 42, its rear semi-cylindrical portion 44, and having a reinforcement boss projecting outwards. 46. It also has five hooking lugs 48.

La paroi latérale 42 de la coquille de blindage inférieure 12 comporte une première partie 50 sensiblement symétrique de la paroi latérale 26 qui est délimitée par un décrochement périphérique 52 au-delà duquel elle se prolonge par une seconde partie de paroi latérale 54 qui est parallèle à la première partie 50 mais décalée vers l'intérieur de façon à permettre son emboîtement à l'intérieur de la paroi latérale 26. La seconde partie 54 comporte dans ses deux portions arrière des ergots de verrouillage 56 prévus pour être reçus dans les ouvertures 36.The side wall 42 of the lower shielding shell 12 has a first portion 50 substantially symmetrical with the side wall 26 which is delimited by a peripheral recess 52 beyond which it is extended by a second side wall portion 54 which is parallel to the first part 50 but offset inwardly so as to allow it to fit inside the side wall 26. The second part 54 has in its two portions rear of the locking pins 56 provided to be received in the openings 36.

Les deux portions semi-cylindriques 28 et 44 reçoivent, après assemblage du connecteur, une virole de fermeture 58 avant l'opération de sertissage final.The two semi-cylindrical portions 28 and 44 receive, after assembly of the connector, a closing ring 58 before the final crimping operation.

Chacune des deux coquilles de blindage est réalisée par emboutissage d'une tôle.Each of the two shielding shells is produced by stamping a sheet.

Grâce aux bossages de renfort 32 et 46, elles sont suffisamment rigides pour transmettre les efforts qui leur seront appliqués lors de l'opération de surmoulage final d'un matériau plastique d'étanchéité aux parois latérales.Thanks to the reinforcement bosses 32 and 46, they are rigid enough to transmit the forces which will be applied to them during the final overmolding operation of a plastic sealing material to the side walls.

Conformément à l'invention et comme on peut le voir aux figures 4 et 5, le bord libre d'extrémité 60 de la deuxième partie 54 de la paroi latérale 42 de la coquille de blindage inférieure 12 vient en appui contre la face intérieure du fond plan 20 de la coquille de blindage supérieure 10.According to the invention and as can be seen in Figures 4 and 5, the free end edge 60 of the second part 54 of the side wall 42 of the lower shielding shell 12 comes to bear against the inner face of the bottom plane 20 of the upper armor shell 10.

De même le bord périphérique d'extrémité 62 de la paroi latérale 26 est en appui contre le décrochement 52 de la paroi latérale 42 de la coquille de blindage inférieure 12.Similarly, the peripheral end edge 62 of the side wall 26 bears against the recess 52 of the side wall 42 of the lower shielding shell 12.

Ce double effet d'appui permet d'encaisser les efforts transmis aux parois latérales lors du surmoulage et d'assurer une parfaite continuité électrique et un blindage optimal.This double bearing effect allows the forces transmitted to the side walls to be absorbed during overmolding and to ensure perfect electrical continuity and optimal shielding.

L'agencement en position emboîtée des deux coquilles de blindage 10 et 12 assure donc, d'une part un très bon blindage électrique aux champs parasites du fait de la superposition de la paroi latérale 26 avec la seconde portion de, paroi latérale 54 et, d'autre part, un très bon contact électrique par les bords en appui.The arrangement in the nested position of the two shielding shells 10 and 12 therefore provides, on the one hand, very good electrical shielding to the stray fields due to the superposition of the side wall 26 with the second portion of, side wall 54 and, on the other hand, very good electrical contact by the bearing edges.

Les faces intérieures des fonds plans 20 et 38 enveloppent le bloc isolant 14, comme on peut le voir à la figure 5, mais sans lui appliquer d'efforts.The interior faces of the flat bottoms 20 and 38 envelop the insulating block 14, as can be seen in FIG. 5, but without applying any force to it.

Conformément à un autre aspect de l'invention, et comme cela est représenté notamment à la figure 5, chaque patte d'accrochage 24 ou 48 possède un profil particulier. Ce profil sera décrit en référence à la patte d'accrochage inférieure 48 représentée à la figure 5.In accordance with another aspect of the invention, and as shown in particular in Figure 5, each latch 24 or 48 has a particular profile. This profile will be described with reference to the lower hooking lug 48 shown in FIG. 5.

La patte 48 possède un profil en forme de L. Une première branche 66 s'étend horizontalement depuis le bord libre avant 40 de la coquille inférieure 12 et se prolonge vers l'extérieur du boîtier par une seconde branche à angle droit 68.The tab 48 has an L-shaped profile. A first branch 66 extends horizontally from the free front edge 40 of the lower shell 12 and is extended towards the outside of the housing by a second branch at right angles 68.

La première branche 66 est d'épaisseur réduite par rapport à celle de la tôle constitutive de la coquille, de même que la seconde branche 68 dont l'épaisseur est égale à celle de la première branche. Cette réduction d'épaisseur est obtenue lors de l'opération de découpage-emboutissage de la coquille par écrasement de la tôle ce qui provoque un phénomène d'écrouissage qui augmente notablement les caractéristiques de résistance de la tôle dans la zone des pattes d'accrochage.The first branch 66 is of reduced thickness compared to that of the sheet constituting the shell, as is the second branch 68 whose thickness is equal to that of the first branch. This reduction in thickness is obtained during the cutting-stamping operation of the shell by crushing the sheet, which causes a phenomenon of work hardening which notably increases the resistance characteristics of the sheet in the area of the lugs. .

La première branche 66 en coopération avec la seconde branche 68, et du fait de son épaisseur réduite, constitue un cran en forme de U qui est prévu pour recevoir le bord 70 en vis-à-vis d'une encoche correspondante 72 formée dans le contour 74 de la coquille métallique arrière normalisée 76 de l'élément de connecteur (voir figure 6).The first branch 66 in cooperation with the second branch 68, and because of its reduced thickness, constitutes a U-shaped notch which is designed to receive the edge 70 opposite a corresponding notch 72 formed in the contour 74 of the rear standardized metal shell 76 of the connector element (see FIG. 6).

Le bord libre de la seconde branche 68 coopère avec une zone incurvée de la tôle de la coquille arrière 76 ce qui procure un effet de coincement et de retenue du bord 70 dans le cran en U.The free edge of the second branch 68 cooperates with a curved zone of the sheet of the rear shell 76 which provides an effect of wedging and retaining the edge 70 in the U-shaped notch.

La coopération de l'encoche 72 avec le cran de la patte d'accrochage assure une très bonne tenue mécanique de l'ensemble.The cooperation of the notch 72 with the notch of the hooking tab ensures very good mechanical strength of the assembly.

Le boîtier assemblé forme de lui même une coque très rigide et homogène dès son assemblage indépendamment de la présence d'un surmoulage.The assembled housing itself forms a very rigid and homogeneous shell as soon as it is assembled, regardless of the presence of an overmolding.

Afin de ne pas augmenter l'épaisseur hors tout de l'élément de connecteur électrique, chacune des pattes d'accrochage est reçue dans un évidement 80 formé dans la face 82 tournée vers l'arrière de la partie avant 84 du bloc isolant 14 et en éloignement de la face avant 17 de ce dernier.In order not to increase the overall thickness of the electrical connector element, each of the hooking lugs is received in a recess 80 formed in the face 82 facing the rear of the front part 84 of the insulating block 14 and away from the front face 17 of the latter.

Le bloc isolant 14 comporte bien entendu de part et d'autre de son plan médian longitudinal, un nombre d'évidements 80 égal à ceux des pattes 24 et 48.The insulating block 14 naturally comprises on either side of its longitudinal median plane, a number of recesses 80 equal to those of the legs 24 and 48.

Outre le fait qu'ils évitent d'augmenter l'épaisseur de l'élément de connecteur, les évidements 80 facilitent l'insertion des pattes d'accrochage lors de l'assemblage des coquilles de blindage inférieure et supérieure sur le sous-ensemble représenté à la figure 10, cet assemblage se faisant de manière classique par introduction des pattes d'accrochage dans les trous 82 délimités par les évidements 80 et les encoches 72 puis par pivotement des coquilles autour des pattes d'accrochage jusqu'à les amener dans la position représentée aux figures 4 et 5.In addition to the fact that they avoid increasing the thickness of the connector element, the recesses 80 facilitate the insertion of the hooking lugs when assembling the upper and lower shielding shells on the sub-assembly shown. in FIG. 10, this assembly being carried out in a conventional manner by introduction of the hooking lugs into the holes 82 delimited by the recesses 80 and the notches 72 then by pivoting of the shells around the hooking lugs until they are brought into the position shown in Figures 4 and 5.

Il ne reste plus alors qu à terminer la fermeture en emboîtant la virole de fermeture 58 en position sur les portions semi-cylindriques 28 et 44, puis à sertir la virole.It then remains only to complete the closure by fitting the closure ferrule 58 in position on the semi-cylindrical portions 28 and 44, then crimping the ferrule.

Du fait de l'agencement géométrique des pattes d'accrochage, des évidements 80 et des encoches 72 il ne se produit aucun effet de levier avec écrasement du bloc isolant 14 lors de la mise en place et du pivotement des coquilles de blindage 10 et 12.Due to the geometrical arrangement of the lugs, the recesses 80 and the notches 72 there is no leverage effect with crushing of the insulating block 14 during the positioning and pivoting of the shielding shells 10 and 12 .

Lorsque l'élément de connecteur a été assemblé, tel que cela est représenté partiellement à la partie inférieure de la figure 5, on peut ensuite réaliser sans aucun danger l'opération de surmoulage à chaud par injection d'un matériau d'étanchéité sur l'élément de connecteur. L'opération de surmoulage ne provoque aucune déformation intempestive et il ne se produit aucune pénétration de matériau à l'intérieur du boîtier de blindage.When the connector element has been assembled, as shown partially in the lower part of FIG. 5, it is then possible to safely carry out the hot overmolding operation by injecting a sealing material on the connector element. The overmolding operation does not cause any untimely deformation and there is no material penetration inside the shielding box.

Du fait de leur conception symétrique, les pattes d'accrochage étant agencées symétriquement par paires dans l'une et l'autre, les deux coquilles de blindage 10 et 12 peuvent éventuellement être réalisées à l'aide du même outil de départ sur lequel il suffit d'ajouter un poinçon pour éliminer la portion de tôle correspondant à la seconde partie 54 de la paroi latérale 50 ainsi que deux poinçons de découpe des trous 36.Due to their symmetrical design, the hooking lugs being arranged symmetrically in pairs in one and the other, the two shielding shells 10 and 12 can possibly be produced using the same starting tool on which it it suffices to add a punch to eliminate the portion of sheet metal corresponding to the second part 54 of the side wall 50 as well as two punches for cutting the holes 36.

La conception symétrique des coquilles 10 et 12 en permet le montage indifférent en lieu et place l'un de l'autre, la terminologie inférieure et supérieure n'étant employée que pour des commodités de rédaction.The symmetrical design of the shells 10 and 12 allows indifferent mounting in place of one another, the lower and upper terminology being used only for writing convenience.

Ce montage indifférent est particulièrement avantageux dans le cas où les coquilles ont des sorties de câble arrière coudées par rapport à leur direction d'insertion, car un même jeu de deux coquilles complémentaires permet de réaliser un coude à gauche ou un coude à droite.This indifferent assembly is particularly advantageous in the case where the shells have bent rear cable outlets relative to their direction of insertion, since the same set of two complementary shells makes it possible to produce a bend on the left or a bend on the right.

La coque formée par les coquilles de blindage et la coquille arrière est très homogène et résistante, tant latéralement du fait de la coopération des parois latérales, que verticalement du fait des bords en appui contre les fonds et le décrochement, et que longitudinalement du fait des encoches reçues dans les crans en U des pattes d'accrochage.The shell formed by the shielding shells and the rear shell is very homogeneous and resistant, both laterally due to the cooperation of the side walls, and vertically due to the edges pressing against the bottoms and the recess, and only longitudinally due to the notches received in the U-shaped notches of the hanging tabs.

Claims (6)

  1. Shielded electrical connector element designed to receive a layer of plastic moulded onto it, and of the type having an insulating connector block (14) including several alveoli (18) in which electrical contact elements (16) are received and which extends from its front face (17) towards the rear of the connector element inside a shielding casing consisting of two metal shielding shells, respectively top (10) and bottom (12), of complementary shapes for surrounding the insulating block (14) and the front free edges (22, 40) of which have lugs (24, 48) for hooking into notches (72) formed in the contour (74) of a rear metal shell (76) which surrounds and cooperates with an outwardly projecting edge of the front part (84) of the insulating block (14), the top (10) and bottom (12) shielding shells each having a lateral wall (26, 42) which are parallel and oriented towards each other, characterised in that the lateral wall (42) of the bottom shielding shell (12) has a peripheral offset (52) directed towards the inside of the casing, which delimits a support edge for the peripheral free edge (62) of the lateral wall (26) of the top shielding shell (10) when the two lateral walls (26, 42-50, 54) are fitted in each other, in that the lateral wall (42) of the bottom shielding shell (12) extends beyond the said offset (52), parallel to itself, in the direction of the flat bottom (20) of the top shielding shell (10), and in that the peripheral free edge (60) of this lateral wall (42, 54) bears against the said flat bottom (20).
  2. Connector element according to Claim 1, characterised in that each of the two shielding shells (10, 12) has a flat bottom (20, 38) which encloses a corresponding face of the insulating block (14) delimited by the edges (15) of the partitions delimiting the said alveoli (18), without applying forces to the insulating block, and in that each flat bottom has a reinforcing protrusion (32, 46) projecting towards the outside of the shielding casing and parallel to the front free edge (22, 40) of the shell (10, 12).
  3. Connector element according to either one of the preceding claims, characterised in that each of the said hooking-in lugs (24, 48) has, in cross section, an L-shaped profile, a first arm (66) of which is parallel to the flat bottom of the shell and extends from the front free edge of the latter and the second arm (68) of which is oriented towards the outside of the shielding casing, and in that each hooking-in lug is received in a recess (80) of complementary shape arranged in the face (82) oriented towards the rear of the front part (84) of the insulating block (14).
  4. Connector element according to Claim 3, characterised in that the said first arm (66) has a thickness less than that of the sheet metal from which the shielding shell is formed in order to delimit a retaining step oriented towards the outside of the casing and in which the edge of the end (70) delimiting the said corresponding notch (72) is received.
  5. Connector element according to Claim 4, characterised in that the said step of reduced thickness is produced by crushing the sheet metal in the corresponding area during the operation of pressing the shell so as to cause a pinching of the metal in this area.
  6. Connector element according to any one of the preceding claims, characterised in that the hooking-in lugs (24, 48) on each of the shielding shells (10, 12) are equal in number, and in that they are arranged in pairs facing each other in order to enable the shielding shells to be fitted in any way on the rear shell (76) of the connector element.
EP19900403168 1989-11-10 1990-11-07 Shielded electrical connector Expired - Lifetime EP0427630B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8914802 1989-11-10
FR8914802A FR2654558B1 (en) 1989-11-10 1989-11-10 SHIELDED ELECTRICAL CONNECTOR ELEMENT.

Publications (2)

Publication Number Publication Date
EP0427630A1 EP0427630A1 (en) 1991-05-15
EP0427630B1 true EP0427630B1 (en) 1995-07-19

Family

ID=9387302

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900403168 Expired - Lifetime EP0427630B1 (en) 1989-11-10 1990-11-07 Shielded electrical connector

Country Status (3)

Country Link
EP (1) EP0427630B1 (en)
DE (1) DE69021012T2 (en)
FR (1) FR2654558B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6077118A (en) * 1997-02-21 2000-06-20 Molex Incorporated Electrical connector having a metal shell

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2513946Y2 (en) * 1991-06-26 1996-10-09 ホシデン株式会社 connector
FR2680916B1 (en) * 1991-08-27 1994-11-18 Souriau & Cie SHIELDED ELECTRICAL CONNECTOR.
US5752854A (en) * 1997-02-18 1998-05-19 The Whitaker Corporation Panel mount structure
JP5008492B2 (en) * 2007-08-01 2012-08-22 株式会社オートネットワーク技術研究所 Shield connector
ES2547260A1 (en) 2014-04-01 2015-10-02 Te Connectivity Amp España, S.L.U. Shielded telecommunication connector (Machine-translation by Google Translate, not legally binding)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0090539A3 (en) * 1982-03-31 1985-11-21 AMP INCORPORATED (a New Jersey corporation) Shielded connector
US4653836A (en) * 1983-07-06 1987-03-31 Amp Incorporated Shielded electrical connector
US4582384A (en) * 1984-05-04 1986-04-15 Amp Incorporated Overmolded shielded connector
DE8625668U1 (en) * 1986-09-25 1986-11-20 Dsg Schrumpfschlauch Gmbh, 5309 Meckenheim, De
US4689723A (en) * 1986-09-29 1987-08-25 Amp Incorporated Hermaphroditic shield for line terminator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6077118A (en) * 1997-02-21 2000-06-20 Molex Incorporated Electrical connector having a metal shell

Also Published As

Publication number Publication date
DE69021012T2 (en) 1995-12-14
EP0427630A1 (en) 1991-05-15
FR2654558A1 (en) 1991-05-17
DE69021012D1 (en) 1995-08-24
FR2654558B1 (en) 1993-12-17

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