EP0595296B1 - Shielding device for a cable connector - Google Patents

Shielding device for a cable connector Download PDF

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Publication number
EP0595296B1
EP0595296B1 EP93117413A EP93117413A EP0595296B1 EP 0595296 B1 EP0595296 B1 EP 0595296B1 EP 93117413 A EP93117413 A EP 93117413A EP 93117413 A EP93117413 A EP 93117413A EP 0595296 B1 EP0595296 B1 EP 0595296B1
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EP
European Patent Office
Prior art keywords
longitudinal
plates
circuit board
transverse
printed circuit
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
EP93117413A
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German (de)
French (fr)
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EP0595296A3 (en
EP0595296A2 (en
Inventor
Jacques Ing. Longueville
Johan Ing. Vanbesien
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Siemens AG
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Siemens AG
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Publication date
Priority claimed from DE9304928U external-priority patent/DE9304928U1/en
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP93117413A priority Critical patent/EP0595296B1/en
Publication of EP0595296A2 publication Critical patent/EP0595296A2/en
Publication of EP0595296A3 publication Critical patent/EP0595296A3/en
Application granted granted Critical
Publication of EP0595296B1 publication Critical patent/EP0595296B1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • 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
    • H01R13/6582—Shield structure with resilient means for engaging mating connector
    • 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
    • H01R13/6585—Shielding material individually surrounding or interposed between mutually spaced contacts
    • H01R13/6586—Shielding material individually surrounding or interposed between mutually spaced contacts for separating multiple connector modules
    • H01R13/6587—Shielding material individually surrounding or interposed between mutually spaced contacts for separating multiple connector modules for mounting on PCBs
    • 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]
    • H01R13/6591—Specific features or arrangements of connection of shield to conductive members
    • H01R13/6594—Specific features or arrangements of connection of shield to conductive members the shield being mounted on a PCB and connected to conductive members

Definitions

  • the invention relates to a shielding device for side-by-side plug-in cable plugs of a shielded transfer system arranged on a backplane, with two parallel longitudinal plates fastened to the circuit board by means of press-in pins.
  • shielded transfer bridges which contain a male connector are used for the signal transfer to accommodate receptacles which can be plugged in next to one another and which produce the separable cable connection.
  • a male connector for a shielded transfer system which consists of a trough-like ledge body made of plastic, which is divided by partition walls into individual chambers with pin fields and is provided on its long sides with separate shield plates, which by means of press-fit pins on one PCB are attached.
  • the invention has for its object to improve a shielding device of the type mentioned with the simplest possible structure in terms of its shielding effect and to ensure sufficient mechanical stability that safely absorbs the loads occurring on the cable connectors.
  • Such a shielding device consists of a centering bar for the cable plug, which is formed only by a sheet metal frame.
  • the shielding device thus has a very simple structure and provides a complete all-round shielding of the cable plug by the centering strip surrounding the cable plugs inserted next to one another.
  • the centering strip according to the invention now consists of a stable sheet metal construction which is fastened as a whole with many press-in connections to a backplane circuit board. In addition to the ground connection, these press-in connections ensure a sufficiently strong mechanical anchoring.
  • the centering strip of the shielding device according to the invention is, however, due to its stability achieved by the press-in connections on the one hand and the structure with longitudinal and transverse plates connected to one another in an advantageous manner, able to safely absorb the forces occurring due to transverse loads at the cable outlet of the cable connector.
  • the screen device consists of a rectangular sheet metal frame 1, which is formed by two parallel longitudinal sheets 2 and 3 and a plurality of transverse sheets 4 connecting the longitudinal sheets transversely to one another.
  • the longitudinal and transverse plates 2, 3 and 4 which serve as shielding plates for cable plugs which can be inserted next to one another, form rectangular chambers and are each formed with a plurality of press-in pins 6 on their lower edge facing a printed circuit board 5.
  • the sheet metal frame 1 is thus inserted as a whole into plated-through holes in the printed circuit board 5, which are connected to the ground layers of the printed circuit board. This creates a close shield contact between the longitudinal and transverse sheets and these ground layers.
  • the cross plates are in each case at opposite points as close as possible to the upper edge 8 of the longitudinal plates 2, 3, ie approximately in the upper quarter of the height of the longitudinal plates, and as close as possible to the lower edge of the longitudinal plates, ie approximately in the lower Quarter of the height of the longitudinal plates, with a lateral projection 9 designed as a cam, inserted into a hole 10 in the respective longitudinal plate.
  • the transverse plates 4 are formed with lateral hooks 11 which are angled toward the upper edge 8 of the longitudinal plates 2, 3 and which engage in slots 12 of the longitudinal plates which run perpendicular to the printed circuit board 5.
  • the slots 12 are here arranged in inwardly cranked webs 13, which are provided in the upper region of the longitudinal sheets, seen in the longitudinal direction through free cuts 19, alternately with inwardly directed spring arms 14 extending in the plugging direction.
  • a chamber which is formed by two transverse plates 4 adjacent to each other at 1 SU distance, there is an entire web and two half webs 13 in each longitudinal plate, which result in a tight, play-free guidance for the plug-in cable connector, which in the inserted state then can be locked, for example, by two spring arms 14 per longitudinal plate, in that projections 15 snap onto the metal housing 16 of the cable connector, which is rectangular in cross section, behind these spring arms.
  • a shielding device when attached to the printed circuit board 5, results in a stable centering strip for several cable plugs which can be inserted next to one another.
  • Such a centering bar then forms in the assembled state, i.e. in the state equipped with pin fields and contact pins, a male connector or in the unassembled state together with a separate male connector a transfer bridge for a shielded transfer system arranged on a backplane.
  • transverse load A cable load and a tilting moment onto the centering strip.
  • the effects of the transverse load can be seen in Fig. 2.
  • the transverse load tries to bring about two possible deformations of the screen device, namely a lateral pushing away of the one side plate, for example the longitudinal plate 2, and a deformation of the plate frame rectangle to form a parallelogram.
  • the transverse plate 4 prevents the deformation and redirects the upper transverse force F qu into a transverse or displacement force F 1 close to the printed circuit board 5 and thus close to the fastening of the shielding device on the printed circuit board, as well as into compressive and tensile forces F 2 and / or F 3 .
  • a tilting moment M acts on the centering strip, which, for example, presses the left side longitudinal plate 2 in the direction of arrow 17 into the printed circuit board 5 and, if the centering strip is not sufficiently stable, may unlock the cable connector could lead.
  • the tilting moment M presses in the direction of arrow 18 against the spring arm 14, which locks the cable connector or its metal housing 16, obliquely inward, whereby a pulling force F 3 arises at the press-in connections and a transverse force F 4 pushes the longitudinal plate 3 towards Tried to push side.
  • the shear force and its effects are absorbed by the connection between the longitudinal and transverse plates provided in this centering bar.
  • the pressing apart of the lateral longitudinal sheets 2, 3 is prevented by the transverse sheets 4 and the interlocking between transverse and longitudinal sheets provided in the webs 13 as close as possible to the upper edge 8 of the longitudinal sheets, which holds the upper edge of the longitudinal sheets.
  • the deformation towards the parallelogram is shown by the two lateral projections 9, which are inserted in the lower region of transverse and longitudinal sheets in the matching holes 10 of the longitudinal sheets, prevented. Together with the upper hooks 11, these projections 9 form a play-free, non-deformable transverse reinforcement.

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Description

Die Erfindung betrifft eine Schirmeinrichtung für nebeneinander einsteckbare Kabelstecker eines an einer Rückwandleiterplatte angeordneten geschirmten Übergabesystems, mit zwei zueinander parallelen, mittels Einpreßstiften an der Leiterplatte befestigten Längsblechen.The invention relates to a shielding device for side-by-side plug-in cable plugs of a shielded transfer system arranged on a backplane, with two parallel longitudinal plates fastened to the circuit board by means of press-in pins.

Bei geschirmten, im Bereich einer Rückwandleiterplatte angeordneten Übergabesystemen werden für die Signalübergabe zur Aufnahme nebeneinander einsteckbarer, die trennbare Leitungsverbindung herstellender Kabelstecker geschirmte Übergabebrücken eingesetzt, die eine Messerleiste enthalten.In the case of shielded transfer systems arranged in the area of a backplane circuit board, shielded transfer bridges which contain a male connector are used for the signal transfer to accommodate receptacles which can be plugged in next to one another and which produce the separable cable connection.

Durch das DE-GM 92 05 780 ist eine Messerleiste für ein geschirmtes Übergabesystem bekannt, die aus einem wannenartigen Leistenkörper aus Kunststoff besteht, der durch Zwischenquerwände in einzelne Kammern mit Stiftfeldern aufgeteilt und an seinen Längsseiten mit separaten Schirmblechen versehen ist, welche mittels Einpreßstiften an einer Leiterplatte befestigt werden.From DE-GM 92 05 780 a male connector for a shielded transfer system is known, which consists of a trough-like ledge body made of plastic, which is divided by partition walls into individual chambers with pin fields and is provided on its long sides with separate shield plates, which by means of press-fit pins on one PCB are attached.

Der Erfindung liegt die Aufgabe zugrunde, eine Schirmeinrichtung der eingangs genannten Art bei einem möglichst einfachen Aufbau hinsichtlich ihrer Schirmwirkung zu verbessern und dabei eine ausreichende mechanische Stabilität zu gewährleisten, welche die an den Kabelsteckern auftretenden Belastungen sicher abfängt.The invention has for its object to improve a shielding device of the type mentioned with the simplest possible structure in terms of its shielding effect and to ensure sufficient mechanical stability that safely absorbs the loads occurring on the cable connectors.

Diese Aufgabe wird bei einer Schirmeinrichtung der eingangs genannten Art gemäß der Erfindung durch folgende Merkmale gelöst:

  • a) die beiden Längsbleche bilden die Längsseitenwände eines rechteckigen Blechrahmens,
  • b) die Längsbleche sind an den Enden und in bestimmten, durch die Kabelstecker vorgegebenen Abständen durch einzelne mittels Einpreßstiften an der Leiterplatte befestigte Querbleche miteinander verbunden,
  • c) die Querbleche haben eine derartige Höhe, daß ihre obere Kante bis nahe an die obere Kante der Längsbleche reicht,
  • d) die Querbleche sind jeweils an einander gegenüberliegenden Stellen möglichst nahe der oberen Kante der Längsbleche mit diesen verhakt und möglichst nahe der unteren Kante der Längsbleche mit einem seitlichen Vorsprung in ein Loch des jeweiligen Längsbleches gesteckt, so daß in an der Leiterplatte befestigtem Zustand der Schirmeinrichtung eine in sich stabile Zentrierleiste für die Kabelstecker gebildet ist.
This object is achieved in a screen device of the type mentioned at the outset according to the invention by the following features:
  • a) the two longitudinal sheets form the longitudinal side walls of a rectangular sheet metal frame,
  • b) the longitudinal sheets are connected to one another at the ends and at certain intervals, predetermined by the cable connector, by means of individual transverse sheets attached to the printed circuit board by means of press-in pins,
  • c) the transverse plates have a height such that their upper edge extends close to the upper edge of the longitudinal plates,
  • d) the transverse plates are each hooked at opposite points as close as possible to the upper edge of the longitudinal plates and inserted as close as possible to the lower edge of the longitudinal plates with a lateral projection in a hole in the respective longitudinal plate, so that the shielding device is fastened to the circuit board a stable centering bar for the cable connector is formed.

Eine derartige Schirmeinrichtung besteht aus einer lediglich von einem Blechrahmen gebildeten Zentrierleiste für die Kabelstecker. Die Schirmeinrichtung besitzt somit einen sehr einfachen Aufbau und sorgt durch die die nebeneinander eingesteckten Kabelstecker rahmenartig umgebende Zentrierleiste für eine vollständige Rundumschirmung der Kabelstecker.Such a shielding device consists of a centering bar for the cable plug, which is formed only by a sheet metal frame. The shielding device thus has a very simple structure and provides a complete all-round shielding of the cable plug by the centering strip surrounding the cable plugs inserted next to one another.

Bei derartigen Schirmeinrichtungen sind die Kabelstecker im bestückten Zustand im allgemeinen fest verriegelt, so daß sie nur mittels eines Spezialwerkzeuges entriegelt und gezogen werden können. Auf die Halterung der verriegelten Kabelstecker können daher auch aus diesem Grunde große, den gesamten mechanischen Aufbau der Schirmeinrichtung beeinflussende Kräfte durch Querbelastungen am Kabelausgang einwirken. Zur Abfangung dieser Kräfte wurden die Kabelstecker bisher angeschraubt. Andere mechanische Verriegelungen genügen den Anforderungen nicht in ausreichendem Maße. Die erfindungsgemäße Zentrierleiste besteht nun aus einer in sich stabilen Blechkonstruktion, die als Ganzes mit vielen Einpreßanschlüssen an einer Rückwandleiterplatte befestigt ist. Diese Einpreßverbindungen sichern neben der Masseverbindung eine ausreichend starke mechanische Verankerung. Wenn die Kabelstecker am Kabelausgang sehr stark in Querrichtung belastet werden, wirkt ein großes Kippmoment und eine Querlast auf die Zentrierleiste ein. Die Zentrierleiste der erfindungsgemäßen Schirmeinrichtung ist jedoch aufgrund ihrer durch die Einpreßverbindungen einerseits und den Aufbau mit miteinander in vorteilhafter Weise verbundenen Längs- und Querblechen andererseits erreichten Stabilität in der Lage, die durch Querbelastungen am Kabelausgang der Kabelstecker auftretenden Kräfte sicher abzufangen.With shielding devices of this type, the cable plugs are generally firmly locked in the fitted state, so that they are only unlocked by means of a special tool and can be pulled. For this reason, therefore, large forces which influence the entire mechanical structure of the shielding device can also act on the holder of the locked cable plug through transverse loads at the cable outlet. So far, the cable connectors have been screwed on to absorb these forces. Other mechanical interlocks do not meet the requirements sufficiently. The centering strip according to the invention now consists of a stable sheet metal construction which is fastened as a whole with many press-in connections to a backplane circuit board. In addition to the ground connection, these press-in connections ensure a sufficiently strong mechanical anchoring. If the cable connector at the cable outlet is very heavily loaded in the transverse direction, a large tilting moment and a transverse load act on the centering bar. The centering strip of the shielding device according to the invention is, however, due to its stability achieved by the press-in connections on the one hand and the structure with longitudinal and transverse plates connected to one another in an advantageous manner, able to safely absorb the forces occurring due to transverse loads at the cable outlet of the cable connector.

Vorteilhafte Ausgestaltungen des Gegenstandes des Anspruchs 1 sind in den Unteransprüchen angegeben.Advantageous embodiments of the subject matter of claim 1 are specified in the subclaims.

Die Erfindung wird im folgenden anhand eines in der Zeichnung dargestellten Ausführungsbeispieles einer Schirmeinrichtung näher erläutert. Es zeigen

  • Fig. 1 den Aufbau einer an einer Rückwandleiterplatte befestigten Schirmeinrichtung in perspektivischer Darstellung,
  • Fig. 2 und Fig. 3 in zwei Querschnittsdarstellungen den Aufbau mit der bei eingestecktem und belastetem Kabelstecker auftretenden Querbelastung und dem entsprechenden Kippmoment.
The invention is explained in more detail below with reference to an exemplary embodiment of a screen device shown in the drawing. Show it
  • 1 shows the structure of a screen device attached to a backplane circuit board in a perspective view,
  • Fig. 2 and Fig. 3 in two cross-sectional views, the structure with the transverse load occurring when the cable connector is inserted and loaded and the corresponding tilting moment.

Die Schirmeinrichtung besteht aus einem rechteckigen Blechrahmen 1, der von zwei zueinander parallelen Längsblechen 2 und 3 und mehreren, die Längsbleche quer miteinander verbindenden Querblechen 4 gebildet wird. Die als Schirmbleche für nebeneinander einsteckbare Kabelstecker dienenden Längs- und Querbleche 2,3 bzw. 4 bilden rechteckige Kammern und sind an ihrer einer Leiterplatte 5 zugewandten Unterkante jeweils mit einer Vielzahl von Einpreßstiften 6 ausgebildet. Damit ist der Blechrahmen 1 als Ganzes in durchkontaktierte Bohrungen der Leiterplatte 5 eingesteckt, die mit Masselagen der Leiterplatte in Verbindung stehen. Dadurch ist zwischen den Längs- und den Querblechen und diesen Masselagen ein enger Schirmkontakt hergestellt.The screen device consists of a rectangular sheet metal frame 1, which is formed by two parallel longitudinal sheets 2 and 3 and a plurality of transverse sheets 4 connecting the longitudinal sheets transversely to one another. The longitudinal and transverse plates 2, 3 and 4, which serve as shielding plates for cable plugs which can be inserted next to one another, form rectangular chambers and are each formed with a plurality of press-in pins 6 on their lower edge facing a printed circuit board 5. The sheet metal frame 1 is thus inserted as a whole into plated-through holes in the printed circuit board 5, which are connected to the ground layers of the printed circuit board. This creates a close shield contact between the longitudinal and transverse sheets and these ground layers.

Um neben einer starken Verankerung der Schirmeinrichtung an der Leiterplatte dem Blechrahmen selbst eine hohe Stabilität zu geben, sind die beiden Längsbleche 2 und 3 an den Enden und in bestimmten, durch die Kabelstecker vorgegebenen gleichen Abständen, z.B. in 1 SU (SU = System Unit) - Abständen (1 SU = 25 mm), in bestimmter Weise mit den mit ihrer oberen Kante 7 bis nahe an die obere Kante 8 der Längsbleche 2,3 reichenden Querblechen 4 verbunden. Dabei sind die Querbleche jeweils an einander gegenüberliegenden Stellen möglichst nahe der oberen Kante 8 der Längsbleche 2,3, d.h. etwa im oberen Viertel der Höhe der Längsbleche, mit diesen verhakt und möglichst nahe der unteren Kante der Längsbleche, d.h. etwa in dem unteren Viertel der Höhe der Längsbleche, mit einem als Nocken ausgebildeten seitlichen Vorsprung 9 in ein Loch 10 des jeweiligen Längsbleches eingesteckt. Außerdem sind die Querbleche 4 mit seitlichen, zur oberen Kante 8 der Längsbleche 2,3 hin abgewinkelten Haken 11 ausgebildet, welche in senkrecht zur Leiterplatte 5 verlaufende Schlitze 12 der Längsbleche eingreifen. Die Schlitze 12 sind hier in nach innen gekröpften Stegen 13 angeordnet, welche im oberen Bereich der Längsbleche in Längsrichtung gesehen durch Freischnitte 19 abwechselnd mit nach innen gerichteten, in Steckrichtung verlaufenden Federarmen 14 vorgesehen sind. In einer Kammer, welche durch zwei in 1 SU-Abstand benachbarte Querbleche 4 gebildet wird, befinden sich somit in jedem Längsblech ein ganzer Steg und zwei halbe Stege 13, die eine enge, spielfreie Führung für den einsteckbaren Kabelstecker ergeben, der im eingesteckten Zustand dann z.B. durch je zwei Federarme 14 je Längsblech verriegelbar ist, indem Vorsprünge 15 am im Querschnitt rechteckigen Metallgehäuse 16 des Kabelsteckers hinter diesen Federarmen einrasten.In order to give the sheet metal frame itself a high degree of stability in addition to a strong anchoring of the shielding device on the printed circuit board, the two longitudinal sheets 2 and 3 are at the ends and at certain equal intervals specified by the cable connector, for example in 1 SU (SU = System Unit) - Distances (1 SU = 25 mm), connected in a certain way with the transverse plates 4 which extend with their upper edge 7 to close to the upper edge 8 of the longitudinal plates 2, 3. The cross plates are in each case at opposite points as close as possible to the upper edge 8 of the longitudinal plates 2, 3, ie approximately in the upper quarter of the height of the longitudinal plates, and as close as possible to the lower edge of the longitudinal plates, ie approximately in the lower Quarter of the height of the longitudinal plates, with a lateral projection 9 designed as a cam, inserted into a hole 10 in the respective longitudinal plate. In addition, the transverse plates 4 are formed with lateral hooks 11 which are angled toward the upper edge 8 of the longitudinal plates 2, 3 and which engage in slots 12 of the longitudinal plates which run perpendicular to the printed circuit board 5. The slots 12 are here arranged in inwardly cranked webs 13, which are provided in the upper region of the longitudinal sheets, seen in the longitudinal direction through free cuts 19, alternately with inwardly directed spring arms 14 extending in the plugging direction. In a chamber, which is formed by two transverse plates 4 adjacent to each other at 1 SU distance, there is an entire web and two half webs 13 in each longitudinal plate, which result in a tight, play-free guidance for the plug-in cable connector, which in the inserted state then can be locked, for example, by two spring arms 14 per longitudinal plate, in that projections 15 snap onto the metal housing 16 of the cable connector, which is rectangular in cross section, behind these spring arms.

Der geschilderte Aufbau einer Schirmeinrichtung ergibt in an der Leiterplatte 5 befestigtem Zustand eine in sich stabile Zentrierleiste für mehrere nebeneinander einsteckbare Kabelstecker. Eine derartige Zentrierleiste bildet dann in bestücktem Zustand, d.h. in mit Stiftfeldern und Kontaktstiften bestücktem Zustand, eine Messerleiste oder im unbestückten Zustand zusammen mit einer separaten Messerleiste eine Übergabebrücke für ein an einer Rückwandleiterplatte angeordnetes geschirmtes Übergabesystem.The described structure of a shielding device, when attached to the printed circuit board 5, results in a stable centering strip for several cable plugs which can be inserted next to one another. Such a centering bar then forms in the assembled state, i.e. in the state equipped with pin fields and contact pins, a male connector or in the unassembled state together with a separate male connector a transfer bridge for a shielded transfer system arranged on a backplane.

Bei einer derartigen, mit fest verriegelten Kabelsteckern bestückten Schirmeinrichtung wirkt bei Querbelastungen am Kabelausgang der Kabelstecker eine Querlast und ein Kippmoment auf die Zentrierleiste ein. Die Auswirkungen der Querlast sind in Fig. 2 erkennbar. Die Querlast versucht zwei mögliche Deformationen der Schirmeinrichtung herbeizuführen, nämlich ein seitliches Wegdrücken des einen seitlichen Bleches, z.B. des Längsbleches 2, sowie eine Deformation des Blechrahmen-Rechtecks zu einem Parallelogramm. Das Querblech 4 verhindert die Deformation und leitet die obere Querkraft Fqu um in eine Quer- bzw. Verschiebekraft F1 nahe der Leiterplatte 5 und damit nahe der Befestigung der Schirmeinrichtung an der Leiterplatte sowie in auf die Einpreßverbindungen einwirkende Druck- und Zugkräfte F2 bzw. F3. Ferner wirkt bei Querbelastungen am Kabelausgang der Kabelstecker ein Kippmoment M (Fig.3) auf die Zentrierleiste ein, welches z.B. das linke seitliche Längsblech 2 in Richtung des Pfeiles 17 in die Leiterplatte 5 drückt und bei nicht ausreichend stabiler Zentrierleiste gegebenenfalls zu einer Entriegelung des Kabelsteckers führen könnte. Auf der gegenüberliegenden Seite drückt das Kippmoment M in Richtung des Pfeiles 18 gegen den den Kabelstecker bzw. dessen Metallgehäuse 16 verriegelnden, schräg nach innen gerichteten Federarm 14, wobei eine Ziehkraft F3, an den Einpreßverbindungen entsteht und eine Querkraft F4 das Längsblech 3 zur Seite zu drücken versucht. Die Querkraft und ihre Auswirkungen werden jedoch durch die bei dieser Zentrierleiste vorgesehene Verbindung zwischen den Längs- und Querblechen abgefangen. Das Auseinanderdrücken der seitlichen Längsbleche 2,3 wird durch die Querbleche 4 und die möglichst nahe der oberen Kante 8 der Längsbleche in den Stegen 13 vorgesehene Verhakung zwischen Quer- und Längsblechen verhindert, die den oberen Rand der Längsbleche festhält. Die Deformation zum Parallelogramm hin wird durch die beiden seitlichen Vorsprünge 9, die im unteren Bereich von Quer- und Längsblechen in die passenden Löcher 10 der Längsbleche gesteckt sind, verhindert. Zusammen mit den oberen Haken 11 bilden diese Vorsprünge 9 eine spielfreie, nicht verformbare Querverstärkung. Durch diese Maßnahmen werden - wie gezeigt und beschrieben - alle Kippmomente in Druck- und Zugkräfte an den Einpreßverbindungen umgesetzt, ohne daß der Blechrahmen der Zentrierleiste deformiert wird.In such a screen device equipped with firmly locked cable plugs acts on transverse loads A cable load and a tilting moment onto the centering strip. The effects of the transverse load can be seen in Fig. 2. The transverse load tries to bring about two possible deformations of the screen device, namely a lateral pushing away of the one side plate, for example the longitudinal plate 2, and a deformation of the plate frame rectangle to form a parallelogram. The transverse plate 4 prevents the deformation and redirects the upper transverse force F qu into a transverse or displacement force F 1 close to the printed circuit board 5 and thus close to the fastening of the shielding device on the printed circuit board, as well as into compressive and tensile forces F 2 and / or F 3 . Furthermore, in the event of transverse loads at the cable outlet of the cable connector, a tilting moment M (FIG. 3) acts on the centering strip, which, for example, presses the left side longitudinal plate 2 in the direction of arrow 17 into the printed circuit board 5 and, if the centering strip is not sufficiently stable, may unlock the cable connector could lead. On the opposite side, the tilting moment M presses in the direction of arrow 18 against the spring arm 14, which locks the cable connector or its metal housing 16, obliquely inward, whereby a pulling force F 3 arises at the press-in connections and a transverse force F 4 pushes the longitudinal plate 3 towards Tried to push side. The shear force and its effects are absorbed by the connection between the longitudinal and transverse plates provided in this centering bar. The pressing apart of the lateral longitudinal sheets 2, 3 is prevented by the transverse sheets 4 and the interlocking between transverse and longitudinal sheets provided in the webs 13 as close as possible to the upper edge 8 of the longitudinal sheets, which holds the upper edge of the longitudinal sheets. The deformation towards the parallelogram is shown by the two lateral projections 9, which are inserted in the lower region of transverse and longitudinal sheets in the matching holes 10 of the longitudinal sheets, prevented. Together with the upper hooks 11, these projections 9 form a play-free, non-deformable transverse reinforcement. These measures - as shown and described - convert all tilting moments into compressive and tensile forces at the press-in connections without the sheet metal frame of the centering strip being deformed.

Claims (4)

  1. Screening device for cable plugs, which can be plugged in next to one another, of a screened transfer system arranged on a backplane printed circuit board, having two longitudinal plates which are parallel to one another and are fastened on the printed circuit board by means of press-fit pins, characterized by the following features:
    a) the two longitudinal plates (2, 3) form the longitudinal side walls of a rectangular sheet-metal frame (1),
    b) the longitudinal plates (2, 3) are connected to one another at the ends and at specific distances, which are predetermined by the cable plugs, by means of individual transverse plates (4) which are fastened on the printed circuit board (5) by means of press-fit pins (6),
    c) the transverse plates (4) have a height such that their upper edge (7) reaches a point close to the upper edge (8) of the longitudinal plates (2, 3),
    d) the transverse plates (4) are hooked together with the longitudinal plates (2, 3) in each case at mutually opposite locations as near as possible to the upper edge (8) of the said longitudinal plates (2, 3), and, as near as possible to the lower edge of the longitudinal plates (2, 3), are inserted by a lateral projection (9) into a hole (10) in the respective longitudinal plate (2 and 3), thereby forming an intrinsically robust centring strip for the cable plugs when the screening device is fastened to the printed circuit board (5).
  2. Screening device according to Claim 1, characterized in that the transverse plates (4) are designed with lateral hooks (11) which are angled towards the upper edge (8) of the longitudinal plates (2, 3), and the longitudinal plates (2, 3) are designed with slots (12) for the hooks (11) which slots run perpendicularly to the printed circuit board (5).
  3. Screening device according to Claim 1 or 2, characterized in that the lateral projections (9) of the transverse plates (4) are designed as cams.
  4. Screening device according to Claim 2 or 3, characterized in that the longitudinal plates (2, 3), in their upper region, as seen in the longitudinal direction, are designed, by virtue of cutouts (19), alternately with inwardly directed spring arms (14), which run in the plugging direction, and with inwardly offset webs (13), which are provided with a slot (12) for the hooks (11) of the transverse plates (4).
EP93117413A 1992-10-29 1993-10-27 Shielding device for a cable connector Expired - Lifetime EP0595296B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP93117413A EP0595296B1 (en) 1992-10-29 1993-10-27 Shielding device for a cable connector

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP92118540 1992-10-29
EP92118540 1992-10-29
DE9304928U DE9304928U1 (en) 1993-03-31 1993-03-31 Shielding device for cable connectors
DE9304928U 1993-03-31
EP93117413A EP0595296B1 (en) 1992-10-29 1993-10-27 Shielding device for a cable connector

Publications (3)

Publication Number Publication Date
EP0595296A2 EP0595296A2 (en) 1994-05-04
EP0595296A3 EP0595296A3 (en) 1995-11-02
EP0595296B1 true EP0595296B1 (en) 1997-09-24

Family

ID=27208569

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93117413A Expired - Lifetime EP0595296B1 (en) 1992-10-29 1993-10-27 Shielding device for a cable connector

Country Status (1)

Country Link
EP (1) EP0595296B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0836249B1 (en) * 1996-10-12 2002-03-27 Molex Incorporated Electrical grounding shroud
JP5848963B2 (en) 2011-11-25 2016-01-27 矢崎総業株式会社 Shield structure and wire harness

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1938332B2 (en) * 1969-07-28 1976-02-19 Hochfrequenzverstärker in Kammerbauweise und Verfahren zu seiner Herstellung Kathrein-Werke KG, 8200 Rosenheim HF amplifier with several shielded chambers - has components dividing wall sections fitted onto printed cct board
US4571014A (en) * 1984-05-02 1986-02-18 At&T Bell Laboratories High frequency modular connector
US4611867A (en) * 1985-07-08 1986-09-16 Japan Aviation Electronics Industry Limited Coaxial multicore receptacle

Also Published As

Publication number Publication date
EP0595296A3 (en) 1995-11-02
EP0595296A2 (en) 1994-05-04

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