EP0429036A1 - Metallisches Gehäuse für elektrischen Verbinder - Google Patents

Metallisches Gehäuse für elektrischen Verbinder Download PDF

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Publication number
EP0429036A1
EP0429036A1 EP90122069A EP90122069A EP0429036A1 EP 0429036 A1 EP0429036 A1 EP 0429036A1 EP 90122069 A EP90122069 A EP 90122069A EP 90122069 A EP90122069 A EP 90122069A EP 0429036 A1 EP0429036 A1 EP 0429036A1
Authority
EP
European Patent Office
Prior art keywords
shells
shell
housing
cables
orifice
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.)
Granted
Application number
EP90122069A
Other languages
English (en)
French (fr)
Other versions
EP0429036B1 (de
Inventor
Daniel Jamet
Christian Guiberteau
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.)
Alcatel CIT SA
Nokia Inc
Original Assignee
Alcatel CIT SA
Nokia Inc
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 Alcatel CIT SA, Nokia Inc filed Critical Alcatel CIT SA
Publication of EP0429036A1 publication Critical patent/EP0429036A1/de
Application granted granted Critical
Publication of EP0429036B1 publication Critical patent/EP0429036B1/de
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
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
    • H01R9/053—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables using contact members penetrating insulation
    • 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
    • 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
    • H01R13/46—Bases; Cases
    • H01R13/502—Bases; Cases composed of different pieces
    • 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
    • H01R13/6592—Specific features or arrangements of connection of shield to conductive members the conductive member being a shielded cable
    • H01R13/6593—Specific features or arrangements of connection of shield to conductive members the conductive member being a shielded cable the shield being composed of different pieces
    • 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
    • H01R13/6596—Specific features or arrangements of connection of shield to conductive members the conductive member being a metal grounding panel

Definitions

  • the invention relates to a metal case for an electrical connector, more particularly suitable for cables comprising a conductive braid covered with an insulator, this braid surrounding at least one insulated electrical conductor and constituting a shield against electromagnetic disturbances.
  • French patent application 2,576,457 describes a metal case for an electrical connector, more particularly suitable for a cable comprising a single braid surrounding a plurality of insulated electrical conductors.
  • the braid is stripped for a certain length at its end, and it caps a first ferrule which is housed between the braid and the insulation covering the conductors.
  • a second ferrule is external to the braid and surrounds its end.
  • This second ferrule is made of copper, for example. It is deformed by crimping, so that the two ferrules and the braid are joined together.
  • the first ferrule is integral with the housing, therefore the braid is fixed securely to the housing and the electrical resistance between the housing and the braid is very low.
  • This type of box has the disadvantage of requiring a relatively large number of operations: an operation of stripping the braid; an operation of placing the first ferrule between the braid and the insulation; an operation of placing the second ferrule around the braid; and a crimping operation.
  • this type of housing is not well suited for connection of a plurality of small cables each comprising an individual shielding braid.
  • casing include a rubber ring, or a spring ring, tightened by a kind of nut, for pressing the shielding braid of a cable against a part of the metal casing, this part generally having a conical shape.
  • Another known type of housing has an orifice for the passage of the cable, having a flat part against which the cable can be pressed by means of a collar. If the cable has a shielding braid, the latter is stripped at the orifice of this box, to establish electrical contact with the box where the collar clamps the cable against the box. All these known types of case have the drawbacks of requiring stripping of the braid, and of comprising clamping means which are bulky.
  • a connector made of a single piece of plastic material comprising two parts, of generally planar shapes, articulated by a flexible hinge.
  • a first part carries contacts each consisting of a insulation displacement fork, the major axis of which is perpendicular to the plane of this first part.
  • a second part has bosses.
  • This connector is used to connect several cables, each comprising a shielding braid and an insulated inner conductor. These cables are laid out in a sheet and are each connected to two adjacent insulation displacement forks.
  • a fork ensures contact with the braid, through the insulation external to the braid, and a fork ensures contact with the internal conductor, through the insulation covering this conductor, the braid and its external insulation having been removed in near the end of the cable.
  • the cables are placed in the forks by closing the two articulated parts against each other, each cable being pressed by bosses on the second part of the connector.
  • the connector remains closed, after this operation, thanks to a locking device, integrated into the connector and constituted of two pins snapping into two windows.
  • This connector has in particular the advantages of being compact and making it possible to connect a plurality of cables each comprising an individual shielding braid.
  • the connection to each braid does not require stripping.
  • it has the disadvantage of not ensuring a shielding of the end of each cable.
  • External disturbances can therefore affect the conductors through the plastic.
  • disturbances can come from the radiation of the ends of neighboring cables, inside the connector itself.
  • the object of the invention is to provide a housing, protecting the ends of the cables against external or internal electromagnetic disturbances, which can be mounted without stripping the shielding braids and having a small footprint.
  • the object of the invention is a metal box, consisting of two facing shells, and comprising orifices provided with fork-shaped projections constituting insulation displacement contacts making it possible to electrically connect the box with the shielding braid of each cable, by the simple fact of closing the two shells.
  • a metal case for an electrical connector comprising two facing metal shells and assembly means, for enclosing a connector plug which is intended to be inserted on a connector socket, for at least one cable comprising a braid conductor covered with an insulator and surrounding at least one insulated electrical conductor extending beyond the end of the braid;
  • each shell comprises: - At least one orifice located at the periphery of the shell and having a contour which is open when the two shells are separated, and which is closed when they are brought together, this closed contour having dimensions adapted to the passage of at least one cable; at least one fork-shaped projection integrated into said metal shell and located in an orifice in said shell, and constituting a insulation displacement contact for electrically connecting said shell to the braid of a cable, and for retaining this cable.
  • This box ensures very good contact between itself and the braid of each cable, which protects the ends of the cables against electromagnetic disturbances outside the box.
  • the projections constituting insulation displacement contacts simultaneously play a role in retaining the cables to prevent their tearing.
  • each shell comprises a half-hinge, the two half-hinges cooperating to form a hinge making it possible to separate or bring the two shells together.
  • This embodiment has the advantage that the hinge allows the two shells to be assembled by means of a single closing screw. It therefore reduces the number of parts constituting the equipped connector. This reduction in the number of parts simplifies its assembly. In particular, when the assembly is done manually, it is more convenient to handle a case which does not separate into two independent parts.
  • a particular embodiment is characterized in that at least one shell has tongues to form screens between contacts carried by the connector plug.
  • the tabs bear against certain contacts in the case of contacts with a wound or welded connection; or else they are inserted into certain contacts in the case of insulation displacement contacts, when the two shells are brought together.
  • These tabs constitute electrical screens protecting certain contacts against disturbances which can be induced by neighboring contacts and the ends of the cables.
  • These tabs also make it possible to connect the mass of the housing to certain contacts of the plug to connect this mass to the contacts of the base corresponding to these contacts of the plug.
  • a particular embodiment is characterized in that an orifice of a shell joins with an orifice of the other shell, when these are brought together, to form a conduit which gathers the cables in a sheet whose plane is orthogonal to the axis of rotation of the hinge; and in that the two shells each have a ramp-shaped boss, to maintain the sheet by reducing the width of the passage of the sheet between the two shells, as the number of cables of the sheet is reduced along of the connector plug.
  • This embodiment has the advantage that the access of the cables has the form of a sheet parallel to the plane of a chassis supporting the connector base in which the connector plug is inserted, which makes it possible to obtain a particularly compact size. weak connector and cables.
  • this embodiment mainly comprises two shells, 1 and 2, articulated around an axis of rotation XX ′ by a hinge 3 which consists in particular of a captive screw 25.
  • the shells 1 and 2 comprise respectively two half-hinges, 29 and 30, which rotate around the screw 25.
  • the axis of symmetry of the screw 25 constitutes the axis of rotation XX ′.
  • the screw 25 also has the function of fixing the housing to a chassis 51. It is screwed into a nut 50 integral with the chassis 51.
  • the chassis 51 supports a connector base 52. This base 52 is fixed on the other side of the chassis 51 with respect to the nut 50, the connector being inserted in the base 52 through a rectangular window 53 having dimensions slightly greater than those of the base.
  • the axis of rotation XX ′ is parallel to the direction of movement of the connector plug 4 when it is inserted on the base 52.
  • the hinge 3 allows the two shells 1 and 2 to be moved apart or brought closer together. The latter can be kept tight by means of a screw 26 and a nut 27. They then enclose a connector plug, 4, consisting of a block of plastic material comprising cells each containing a contact shown diagrammatically at 41.
  • the connector plug 4 comprises four pins, 42, only two of which are visible in FIG. 1. They fit into recesses 23 and 24 formed respectively in the shells 1 and 2.
  • This exemplary embodiment is intended for a connector plug of the HE12 type which is standardized in France and in Europe. It can include insulation displacement contacts or contacts with wound or soldered connection.
  • This example comprises two rows of contacts 41 which are connected to four cables, 34 to 37, each comprising a shielding braid.
  • the scope of the invention is not limited to this example of connector plug and to this number of cables.
  • the cables 34 and 35 each comprise: an external insulating sheath 45, a shielding braid 46, an intermediate insulating sheath 44, and a single inner conductor 43.
  • the cables 36 and 37 each comprise: an insulating sheath 39, a shielding braid 38, and two insulated conductors 40, each insulated by an intermediate insulating sheath 47 ′.
  • the shielding braids 38, 46 can be single or multiple, that is to say formed from several layers of concentric braid.
  • the two shells 1 and 2 When the two shells 1 and 2 are closed, they enclose the cables 34 to 37 in a conduit consisting of an orifice 16 located at the periphery of the shell 1 and an orifice 17 located at the periphery of the shell 2.
  • Each of these orifices has an open outline when the two shells are spaced apart, which makes it possible to insert the cables 34 and 35 into the orifice 16, and insert the cables 36 and 37 into the orifice 17.
  • these two contours form a single closed contour having dimensions adapted exactly to the passage of the four cables 34 to 37 and having an oblong shape which brings together the four cables in a sheet whose plane is parallel to the plane of the chassis 51, and orthogonal to the axis XX ′.
  • Figure 2 shows a top view of the housing, when the two shells 1 and 2 are closed.
  • the hinge 3 comprises two halves, one of which consists of a rounded part, 29, belonging to the shell 2.
  • This rounded part 29 has a recess 31 to contain the head of the captive screw 25. It appears in this figure 2 that the two shells meet on a joint surface comprising an S-shaped corrugation in the vicinity of the orifices 16 and 17.
  • a bump 18 of the shell 1 is inserted in a hollow 19 of the shell 2.
  • a bump of the shell 2 is inserted into a hollow in the shell 1. The role of this undulation will appear below.
  • FIG. 3 represents a front view and shows: the recess 31 housing the head of the captive screw 25; a recess 20 housing the nut 27; and a tongue 22.
  • the tongue 22, of the shell 2, and a tongue 21, of the shell 1, constitute both a guide for inserting the plug 4 into the base 52, and a shielding along the long sides of this base.
  • FIG. 4 represents a bottom view of this exemplary embodiment, and shows a second half of the hinge 3 which is constituted by a rounded part 30 of the shell 1.
  • This rounded part 30 has a recess 32 containing the threaded part of the captive screw 25.
  • This recess 32 allows the screw 25 to be retracted, and allows indexing on the nut 50 when the connector is inserted on the base 52.
  • FIG. 4 shows the two tongues 21 and 22, and a tongue 28 extending the edge of the shell 2 below the joint with the shell 1, at the part upper shell 2. The tongue 28 covers this seal when the two shells are closed.
  • FIG. 5 represents a side view which shows how the orifices 16 and 17 come together to form an orifice of oblong and closed shape, to gather four cables in a sheet whose plane is parallel to the chassis 51. It also shows: the profile tabs 21 and 22; the recess 20 containing the nut 27 and a recess 33 similar to the recess 20, and intended to contain the head of the screw 26.
  • Figure 6 shows a section along a section plane VI, showing features which are located inside the housing. It shows that the orifice 16 has two projections 6a and 7a which each have the shape of a fork. They each constitute a insulation displacement contact which passes through the insulating layer 45 of the cables 34 and 35, when the two shells are brought together, and they retain the cables 34 and 35 in the orifice 16.
  • the orifice 17 comprises two projections 6b and 7b situated in the extension of the projections 6a and 7a, and which also have the form of forks. They each constitute a insulation displacement contact which passes through the insulating layer 39 of the cables 36 and 37, when the two shells are brought together, and they retain these cables in the orifice 17.
  • the projections 6a, 6b and 7a, 7b make it possible to connect each braid. to the housing, by four contact points for added security, as will appear below.
  • these projections have the function of retaining the cables in order to avoid their tearing if they are subjected to a traction.
  • FIG. 6 also shows that the lower part of the orifices 16 and 17 has an S-shaped undulation, similar to the undulation of the joint surface located at the upper part of these orifices.
  • a hump 8 of the shell 1 is inserted into a hollow 9 of the shell 2, while a hump of the shell 2 is inserted into a hollow of the shell 1.
  • These undulations 8, 9, 18, 19 have for function of shifting the discontinuity existing between the projection 6a and the projection 6b, relative to the discontinuity existing between the projection 7a and the projection 7b.
  • Figure 6 also shows that the shell 1 has a variable thickness, smaller in the vicinity of the orifice 16 and greater in the vicinity of the hinge, to form a boss 14 in the form of a ramp.
  • This boss maintains the cable ply by reducing the width of the passage of this ply between the two shells as the number of cables of the ply decreases along the connector plug 4.
  • the major axis of the cable ply is parallel to the rows of contact 41, and the number of cables of the ply is reduced along the rows of contacts.
  • the cable 35 is shorter than the cable 34, therefore the end of the cable 34 could float in space, if there was not the boss 14, and the stiffness of the cable 34 could be sufficient to tear, out of the connector plug 4, the contact fixed at the end of the conductor 43.
  • the shell 2 has a boss 15 which guides the end of the cable 37 to bring it closer to the connector plug 4.
  • FIG. 6 also shows that the shell 1 comprises two tongues, 10 and 11, parallel to the axis XX ′ of the hinge and which, when the shells are brought together, are inserted respectively in two insulation displacement contacts of the connector plug 4 or come to bear against two contacts with wound or welded connections of the plug 4, depending on the type of contact of this plug.
  • These tabs 10 and 11 constitute two electric screens to protect a group of contacts from disturbances electromagnetic radiation from neighboring contacts. They also provide an electrical connection between the metal housing and contacts located on the base 52.
  • the shell 2 has two tongues 12 and 13 which are inserted into certain insulation displacement contacts carried by the connector plug 4 or come in support against two contacts with wound or welded connections of plug 4, depending on the type of contact of this plug.
  • the ends of the four cables 34 to 37 are stripped of the outer insulation 45, 39 and the braid 46, 38 over the same length. Then, in the case of a connector plug with insulation displacement contacts, the conductors 40, 43, surrounded by intermediate sheaths 47, 44 are inserted into the contacts of the plug by means of conventional tooling, or, in the case of a connector plug with wound or welded connection contacts, the conductors 40, 43, are stripped of the intermediate sheaths 47, 44 before being connected to the contacts of the plug by means of conventional tooling. Then the connector plug 4, and the cables 34 to 37 are inserted into the housing, and the latter is closed, by screwing the screw 26 and the nut 27.
  • This housing can be produced in particular by molding a conventional light alloy. All you need is a simple injection tool, demoulding can be done without undercut.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Cookers (AREA)
  • Switch Cases, Indication, And Locking (AREA)
EP90122069A 1989-11-24 1990-11-19 Metallisches Gehäuse für elektrischen Verbinder Expired - Lifetime EP0429036B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8915481A FR2655208B1 (fr) 1989-11-24 1989-11-24 Boitier metallique pour connecteur electrique.
FR8915481 1989-11-24

Publications (2)

Publication Number Publication Date
EP0429036A1 true EP0429036A1 (de) 1991-05-29
EP0429036B1 EP0429036B1 (de) 1994-10-12

Family

ID=9387756

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90122069A Expired - Lifetime EP0429036B1 (de) 1989-11-24 1990-11-19 Metallisches Gehäuse für elektrischen Verbinder

Country Status (10)

Country Link
US (1) US5062804A (de)
EP (1) EP0429036B1 (de)
JP (1) JPH0793168B2 (de)
AT (1) ATE112895T1 (de)
AU (1) AU630054B2 (de)
CA (1) CA2030725C (de)
DE (1) DE69013292T2 (de)
ES (1) ES2065460T3 (de)
FR (1) FR2655208B1 (de)
PL (1) PL287911A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4238224A1 (de) * 1992-11-12 1994-05-19 Gaertner Karl Telegaertner Vorrichtung zum Anschließen elektronischer Einrichtungen

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EP0228750A1 (de) * 1985-12-23 1987-07-15 E.I. Du Pont De Nemours And Company Verbinder für ein Koaxialkabel
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EP0187255A1 (de) * 1984-12-21 1986-07-16 PREH, Elektrofeinmechanische Werke Jakob Preh Nachf. GmbH & Co. Steckerleiste
EP0228750A1 (de) * 1985-12-23 1987-07-15 E.I. Du Pont De Nemours And Company Verbinder für ein Koaxialkabel
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Also Published As

Publication number Publication date
JPH03210778A (ja) 1991-09-13
AU630054B2 (en) 1992-10-15
FR2655208A1 (fr) 1991-05-31
ES2065460T3 (es) 1995-02-16
JPH0793168B2 (ja) 1995-10-09
AU6695390A (en) 1991-05-30
DE69013292T2 (de) 1995-02-16
EP0429036B1 (de) 1994-10-12
DE69013292D1 (de) 1994-11-17
FR2655208B1 (fr) 1994-02-18
PL287911A1 (en) 1991-08-12
CA2030725C (fr) 2000-05-16
CA2030725A1 (fr) 1991-05-25
ATE112895T1 (de) 1994-10-15
US5062804A (en) 1991-11-05

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