EP0657069B1 - Screened electrical sub-assembly rack - Google Patents

Screened electrical sub-assembly rack Download PDF

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Publication number
EP0657069B1
EP0657069B1 EP93919076A EP93919076A EP0657069B1 EP 0657069 B1 EP0657069 B1 EP 0657069B1 EP 93919076 A EP93919076 A EP 93919076A EP 93919076 A EP93919076 A EP 93919076A EP 0657069 B1 EP0657069 B1 EP 0657069B1
Authority
EP
European Patent Office
Prior art keywords
contact
contact pins
panel wiring
apertures
connector
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
EP93919076A
Other languages
German (de)
French (fr)
Other versions
EP0657069A1 (en
Inventor
Eduard Mair
Gundolf Milde
Peter Sedlmeier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP93919076A priority Critical patent/EP0657069B1/en
Publication of EP0657069A1 publication Critical patent/EP0657069A1/en
Application granted granted Critical
Publication of EP0657069B1 publication Critical patent/EP0657069B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/722—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits
    • H01R12/724—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits containing contact members forming a right angle
    • 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]
    • H01R13/6591—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 shielded electrical subrack with a rear wall wiring, the contact pins for plug-in connectors on the rear e.g. of cable connectors, the connectors being covered by a shield plate which is provided with circumferential, feathered spring contacts which can be contacted with grounded contact pins of the rear wall wiring.
  • Such a structure is e.g. become known through the documents of the German utility model G 90 15 255. Due to the narrow distribution of the grounded contact pins, they form an additional shielding jacket that bridges the distance between the cable connector and the rear wall wiring plate.
  • the invention has for its object to improve the contact with the contact pins and the shielding effect.
  • the shielding plate on the back of the backplane wiring plate shields unshielded wires within the subrack.
  • these individual wires were previously only protected by the rear wall of a housing cabinet in which the subrack is inserted. This could cause interference radiation between the individual subracks occur.
  • the shield plate is provided with openings at all points where plugs can be arranged. Openings that are not occupied can be closed, for example, with cover caps which are designed similarly to the shielding jacket of the plug connection.
  • the contact pins are now supported on the inner wall of the opening, they can no longer deflect when the connector is plugged in and when the feathered contact tongues meet the contact pins. This increases the contact force between the contact tongues and the contact pins, as a result of which better contacting is achieved. This already gives a better shielding effect. This is further improved in that a direct contact is made between the grounded contact pins and the shield plate.
  • the grounded contact pins are contacted with at least one shield layer of a backplane wiring board. This creates a close-knit ground connection between the connector shield, the shield plate and the ground layers of the rear wall wiring, which increases the overall shielding even further.
  • a multi-pin connector 1 is attached to a circuit board 2 to which e.g. one or more cables can be connected.
  • the connector has a feathered shield jacket 3, which largely encloses the connector 1 with the exception of its plug side.
  • the shield jacket 3 is made of strip material which is provided with a bulge extending in its longitudinal direction. This has a multiplicity of closed transverse slots 5, between which the shield jacket 3 forms leaf-spring-like contact tongues 4, which essentially extend in the insertion direction.
  • the contact tongues 4 are located near the plug side of the connector 1.
  • the connector 1 is plugged into contact pins 7 of a backplane wiring board 8.
  • the contact tongues 4 are located in the vicinity of contact springs 9 of the connector 1 and are contacted with adjacent earth contact pins 10 of the backplane wiring board 8.
  • the earth contact pins 10 are extended beyond the contact pins 7.
  • a shield plate 11 of the assembly frame extends above the ends of the contact pins 7. This is provided with openings 12 for the connector 1 and the adjacent earth contact pins 10. These protrude into the openings 12 and rest on the inner wall thereof.
  • the contact tongues 4 rest against the earth contact pins 10 under spring tension from the opposite side, so that they are pressed accordingly against the inner wall of the openings 12.
  • the earth contact pins 10 are in contact with ground layers 13 of the rear wiring plate, which creates a close-knit connection between the shield shell 3, the shield plate 11 and the rear wall wiring plate 8.

Landscapes

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

Abstract

The invention concerns a screened electrical sub-assembly rack with, at the rear of the rack, a sheet-metal shroud (11) covering the back-panel wiring, the shroud having apertures (12) for screened plug-in connectors (1) designed to be plugged in the back. Each plug-in connector has sheathing (3) with spring-biased contact blades (4) which are contacted to a back-panel wiring plate (8) via a ring of earth-contact pins (10). The earth-contact pins (10) project into the apertures (12) in the shroud (11) and are pressed by the contact blades (4) against the inside wall of the apertures. This enables a closely spaced earth connection to be established between the plug-in connector (1), the shroud (11) and the back-panel wiring (8).

Description

Die Erfindung bezieht sich auf einen geschirmten elektrischen Baugruppenträger mit einer Rückwandverdrahtung, die Kontaktstifte für rückseitig aufsteckbare Steckverbinder z.B. von Kabelsteckern aufweist, wobei die Steckverbinder von einem Schirmblech ummantelt sind, das mit umlaufenden gefiederten Federkontakten versehen ist, die mit geerdeten Kontaktstiften der Rückwandverdrahtung kontaktierbar sind.The invention relates to a shielded electrical subrack with a rear wall wiring, the contact pins for plug-in connectors on the rear e.g. of cable connectors, the connectors being covered by a shield plate which is provided with circumferential, feathered spring contacts which can be contacted with grounded contact pins of the rear wall wiring.

Ein derartiger Aufbau ist z.B. durch die Unterlagen des deutschen Gebrauchsmuster G 90 15 255 bekannt geworden. Durch die enge Verteilung der geerdeten Kontaktstifte bilden diese einen zusätzlichen Schirmmantel, der den Abstand zwischen dem Kabelstecker und aer Rückwandverdrahtungsplatte überbrückt.Such a structure is e.g. become known through the documents of the German utility model G 90 15 255. Due to the narrow distribution of the grounded contact pins, they form an additional shielding jacket that bridges the distance between the cable connector and the rear wall wiring plate.

Der Erfindung liegt die Aufgabe zugrunde, die Kontaktgabe mit den Kontaktstiften und die Schirmwirkung zu verbessern.The invention has for its object to improve the contact with the contact pins and the shielding effect.

Diese Aufgabe wird durch die Erfindung gemäß Anspruch 1 gelöst. Durch das Schirmblech werden auf der Rückseite der Rückwandverdrahtungsplatte verlegte ungeschirmte Drähte innerhalb des Baugruppenträgers geschirmt. Bei Baugruppenträgern, auf die von der Rückseite her z.B. Steckerkabel aufgesteckt werden können, waren diese Einzeldrähte bisher lediglich durch die Rückwand eines Gehäuseschranks geschützt, in den der Baugruppenträger eingesetzt ist. Dabei konnten Störstrahlungen zwischen den einzelnen Baugruppenträgern auftreten. Das Schirmblech ist z.B. an allen Stellen, an denen Stecker angeordnet werden können, mit Durchbrüchen vesehen. Nicht belegte Durchbrüche können z.B. mit Abdeckkappen verschlossen werden, die ähnlich wie der Schirmmantel der Steckverbindung ausgebildet sind.This object is achieved by the invention according to claim 1. The shielding plate on the back of the backplane wiring plate shields unshielded wires within the subrack. In the case of subracks, to which plug cables, for example, can be attached from the rear, these individual wires were previously only protected by the rear wall of a housing cabinet in which the subrack is inserted. This could cause interference radiation between the individual subracks occur. For example, the shield plate is provided with openings at all points where plugs can be arranged. Openings that are not occupied can be closed, for example, with cover caps which are designed similarly to the shielding jacket of the plug connection.

Da sich nun die Kontaktstifte an der Innenwand des Durchbruchs abstützen, können diese nicht mehr ausweichen, wenn der Steckverbinder aufgesteckt wird und wenn dabei die gefiederten Kontaktzungen auf die Kontaktstifte treffen. Dabei erhöht sich die Kontaktkraft zwischen den Kontaktzungen und den Kontaktstiften, wodurch eine bessere Kontaktierung erreicht wird. Diese ergibt bereits eine bessere Schirmwirkung. Diese wird noch weiter dadurch verbessert, daß zwischen den geerdeten Kontaktstiften und dem Schirmblech ein unmittelbarer Kontakt hergestellt wird.Since the contact pins are now supported on the inner wall of the opening, they can no longer deflect when the connector is plugged in and when the feathered contact tongues meet the contact pins. This increases the contact force between the contact tongues and the contact pins, as a result of which better contacting is achieved. This already gives a better shielding effect. This is further improved in that a direct contact is made between the grounded contact pins and the shield plate.

Nach einer vorteilhaften Weiterbildung der Erfindung sind die geerdeten Kontaktstifte mit zumindest einer Schirmlage einer Rückwandverdrahtungsplatte kontaktiert. Dadurch wird eine engmaschige Masseverbindung zwischen der Steckerschirmung, dem Schirmblech und den Masselagen der Rückwandverdrahtung hergestellt, wodurch die Gesamtschirmung noch weiter erhöht wird.According to an advantageous development of the invention, the grounded contact pins are contacted with at least one shield layer of a backplane wiring board. This creates a close-knit ground connection between the connector shield, the shield plate and the ground layers of the rear wall wiring, which increases the overall shielding even further.

Im folgenden wird die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispieles näher erläutert.The invention is explained in more detail below with reference to an embodiment shown in the drawing.

Es zeigen:

Fig. 1
eine perspektifische Ansich eines vielpoligen Steckverbinders mit einer Leiterplatte und einem Schirmmantel,
Fig. 2
einen Querschnitt durch den Steckverbinder nach Figur 1, der auf eine Rückwandverdrahtung eines Baugruppenrahmens aufgesteckt ist.
Show it:
Fig. 1
a perspective view of a multipole connector with a circuit board and a shield jacket,
Fig. 2
a cross section through the connector of Figure 1, which is plugged onto a rear wall wiring of a module frame.

Nach Figur 1 ist ein vielpoliger Steckverbinder 1 an eine Leiterplatte 2 angesetzt, an die z.B. eines oder mehrere Kabel angeschlossen sein können. Der Steckverbinder weist einen gefiederten Schirmmantel 3 auf, der den Steckverbinder 1 mit Ausnahme seiner Steckseite weitgehend umschließt. Der Schirmmantel 3 ist aus Streifenmaterial hergestellt, das mit einer sich in seiner Längsrichtung erstreckenden Ausbauchung versehen ist. Diese weist eine Vielzahl von geschlossenen Querschlitzen 5 auf, zwischen denen der Schirmmantel 3 blattfederartige Kontaktzungen 4 bildet, die sich im wesentlichen in der Steckrichtung erstrecken. Die Kontaktzungen 4 befinden sich in der Nähe der Steckseite des Steckverbinders 1.According to Figure 1, a multi-pin connector 1 is attached to a circuit board 2 to which e.g. one or more cables can be connected. The connector has a feathered shield jacket 3, which largely encloses the connector 1 with the exception of its plug side. The shield jacket 3 is made of strip material which is provided with a bulge extending in its longitudinal direction. This has a multiplicity of closed transverse slots 5, between which the shield jacket 3 forms leaf-spring-like contact tongues 4, which essentially extend in the insertion direction. The contact tongues 4 are located near the plug side of the connector 1.

Nach Figur 2 ist der Steckverbinder 1 auf Kontaktstifte 7 einer Rückwandverdrahtungsplatte 8 aufgesteckt. Die Kontaktzungen 4 befinden sich in der Nähe von Kontaktfedern 9 des Steckverbinders 1 und sind mit angrenzenden Erdkontaktstiften 10 der Rückwandverdrahtungsplatte 8 kontaktiert. Die Erdkontaktstifte 10 sind über die Kontaktstifte 7 hinaus verlängert. In der Höhe der Spitzen der Erdkontaktstifte 10 erstreckt sich oberhalb der Enden der Kontaktstifte 7 ein Schirmblech 11 des Baugruppenrahmens. Dieses ist mit Durchbrüchen 12 für den Steckverbinder 1 und die angrenzenden Erdkontaktstifte 10 versehen. Diese ragen in die Durchbrüche 12 hinein und liegen an deren Innenwand an. Die Kontaktzungen 4 liegen von der gegenüberliegenden Seite her an den Erdkontaktstiften 10 unter Federspannung an, so daß diese entsprechend gegen die Innenwand der Durchbrüche 12 gedrückt werden.According to Figure 2, the connector 1 is plugged into contact pins 7 of a backplane wiring board 8. The contact tongues 4 are located in the vicinity of contact springs 9 of the connector 1 and are contacted with adjacent earth contact pins 10 of the backplane wiring board 8. The earth contact pins 10 are extended beyond the contact pins 7. At the height of the tips of the earth contact pins 10, a shield plate 11 of the assembly frame extends above the ends of the contact pins 7. This is provided with openings 12 for the connector 1 and the adjacent earth contact pins 10. These protrude into the openings 12 and rest on the inner wall thereof. The contact tongues 4 rest against the earth contact pins 10 under spring tension from the opposite side, so that they are pressed accordingly against the inner wall of the openings 12.

Die Erdkontaktstifte 10 sind zusätzlich zum geerdeten Schirmblech 11 mit Masselagen 13 der Rückwanoverdrahtungsplatte kontaktiert, wodurch eine engmaschige Verbindung zwischen dem Schirmmantel 3, dem Schirmblech 11 und der Rückwandverdrahtungsplatte 8 hergestellt ist.In addition to the grounded shield plate 11, the earth contact pins 10 are in contact with ground layers 13 of the rear wiring plate, which creates a close-knit connection between the shield shell 3, the shield plate 11 and the rear wall wiring plate 8.

Claims (2)

  1. A shielded electrical mounting rack having back-panel wiring which has contact pins (7) for plug connectors (1), for example cable plugs, which can be plugged on at the rear, the plug connectors (1) being surrounded by a shielding casing (3) which is provided with circumferential contact tongues (4) which are like leaf springs and can make contact with ground contact pins (10) on a back-panel wiring board (8) in the back-panel wiring, characterized in that the mounting rack has a shielding plate (11) which covers the back-panel wiring and is provided with apertures (12) for the plug connectors (1), in that the ground contact pins (10) for the contact tongues (4) project into the apertures (12) and can be pressed there, by the contact tongues (4), against the inner walls of the apertures (12).
  2. The mounting rack as claimed in claim 1, characterized in that the ground contact pins (10) are made contact with by at least one ground layer (13) on the back-panel wiring board (8).
EP93919076A 1992-08-31 1993-08-17 Screened electrical sub-assembly rack Expired - Lifetime EP0657069B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP93919076A EP0657069B1 (en) 1992-08-31 1993-08-17 Screened electrical sub-assembly rack

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP92114863 1992-08-31
EP92114863 1992-08-31
EP93919076A EP0657069B1 (en) 1992-08-31 1993-08-17 Screened electrical sub-assembly rack
PCT/EP1993/002192 WO1994006179A1 (en) 1992-08-31 1993-08-17 Screened electrical sub-assembly rack

Publications (2)

Publication Number Publication Date
EP0657069A1 EP0657069A1 (en) 1995-06-14
EP0657069B1 true EP0657069B1 (en) 1996-03-20

Family

ID=8209967

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93919076A Expired - Lifetime EP0657069B1 (en) 1992-08-31 1993-08-17 Screened electrical sub-assembly rack

Country Status (5)

Country Link
US (1) US5479321A (en)
EP (1) EP0657069B1 (en)
JP (1) JPH08500695A (en)
DE (1) DE59301991D1 (en)
WO (1) WO1994006179A1 (en)

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Publication number Priority date Publication date Assignee Title
DE59303369D1 (en) * 1992-10-29 1996-09-05 Siemens Ag UMBRELLA DEVICE FOR A BACK PANEL CONNECTOR
DE4434361C1 (en) * 1994-09-26 1995-12-21 Siemens Ag Carrier for module circuits with screening
US6540558B1 (en) 1995-07-03 2003-04-01 Berg Technology, Inc. Connector, preferably a right angle connector, with integrated PCB assembly
EP0752739B1 (en) * 1995-07-03 2000-10-25 Berg Electronics Manufacturing B.V. Connector with integrated pcb assembly
KR0184960B1 (en) * 1995-12-08 1999-05-15 유기범 Shelf unit equipped with electromagnetic wave shield spring
JP3148855B2 (en) * 1996-03-01 2001-03-26 モレックス インコーポレーテッド Electrical connector
US5664968A (en) * 1996-03-29 1997-09-09 The Whitaker Corporation Connector assembly with shielded modules
US5882214A (en) * 1996-06-28 1999-03-16 The Whitaker Corporation Electrical connector with contact assembly
EP0836249B1 (en) * 1996-10-12 2002-03-27 Molex Incorporated Electrical grounding shroud
DE19939582A1 (en) * 1999-08-20 2001-03-29 Tyco Electronics Logistics Ag Component designed for mounting on a printed circuit board
US6843657B2 (en) 2001-01-12 2005-01-18 Litton Systems Inc. High speed, high density interconnect system for differential and single-ended transmission applications
US6520803B1 (en) 2002-01-22 2003-02-18 Fci Americas Technology, Inc. Connection of shields in an electrical connector
DE10247274A1 (en) * 2002-10-10 2004-04-22 Erni Elektroapparate Gmbh Connector with shielding plate
US7994434B2 (en) * 2009-02-19 2011-08-09 International Business Machines Corporation Electromagnetic interference shielding apparatus and method
KR20120139661A (en) 2010-02-04 2012-12-27 아에스쿨랍 아게 Laparoscopic radiofrequency surgical device
TWM453997U (en) * 2011-11-08 2013-05-21 Molex Inc Connector

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Publication number Priority date Publication date Assignee Title
US4869677A (en) * 1984-08-17 1989-09-26 Teradyne, Inc. Backplane connector
US4808115A (en) * 1987-07-28 1989-02-28 Amp Incorporated Line replaceable connector assembly for use with printed circuit boards
DE3888333T2 (en) * 1987-12-21 1994-09-08 Whitaker Corp Assembly for data distribution.
US5307242A (en) * 1989-08-10 1994-04-26 Siemens Aktiengesellschaft Device for electrically connecting shieldings of multi-pole plugs to the ground layer of a wiring board
ATE97293T1 (en) * 1990-05-16 1993-11-15 Siemens Ag METHOD OF CONTACTING SHIELDS.
DE9015255U1 (en) * 1990-11-06 1991-02-14 Siemens AG, 80333 München Multi-pin shielded connector
US5192228A (en) * 1991-09-16 1993-03-09 Amp Inc. Shielded surface mount electrical connector with integral barbed board lock

Also Published As

Publication number Publication date
WO1994006179A1 (en) 1994-03-17
DE59301991D1 (en) 1996-04-25
EP0657069A1 (en) 1995-06-14
JPH08500695A (en) 1996-01-23
US5479321A (en) 1995-12-26

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