GB2273210A - Filtered connector - Google Patents

Filtered connector Download PDF

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Publication number
GB2273210A
GB2273210A GB9324636A GB9324636A GB2273210A GB 2273210 A GB2273210 A GB 2273210A GB 9324636 A GB9324636 A GB 9324636A GB 9324636 A GB9324636 A GB 9324636A GB 2273210 A GB2273210 A GB 2273210A
Authority
GB
United Kingdom
Prior art keywords
contact
wall
shielding plate
connection device
flange
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
GB9324636A
Other versions
GB9324636D0 (en
GB2273210B (en
Inventor
Holger Demmler
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.)
ZF Sachs AG
Original Assignee
Fichtel and Sachs 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 Fichtel and Sachs AG filed Critical Fichtel and Sachs AG
Publication of GB9324636D0 publication Critical patent/GB9324636D0/en
Publication of GB2273210A publication Critical patent/GB2273210A/en
Application granted granted Critical
Publication of GB2273210B publication Critical patent/GB2273210B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66Structural association with built-in electrical component
    • H01R13/719Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters
    • H01R13/7197Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters with filters integral with or fitted onto contacts, e.g. tubular filters
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6581Shield structure
    • H01R13/6585Shielding material individually surrounding or interposed between mutually spaced contacts
    • H01R13/6588Shielding material individually surrounding or interposed between mutually spaced contacts with through openings for individual contacts

Landscapes

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

Abstract

A connector of an electrical device (8) shielded by an electrically conductive wall (2) of a housing includes a plastics contact-carrier (4, 5, 6) insertable into an opening (3) of the wall (2),and a plurality of contacts (7) mounted in the contact-carrier (4, 5, 6) and piercing the contact-carrier (4, 5, 6) transversely of the wall (2). The contact-carrier (4, 5, 6) includes a shielding plate (9) electrically connectable to the wall (2) and pierced by the contacts (7). A lead-through capacitor (11) is associated separately with each contact (7), is electrically connected to the shielding plate (9) and is penetrated by the associated contact (7). The shielding plate may extend into a flange (5) of the contact-carrier. The shielding plate, contacts and capacitors may be formed as a unit onto which the contact-carrier may be moulded. <IMAGE>

Description

Description CONNECTION DEVICE FOR AN ELECTRICAL ARRANGEMENT SHIELDED BY AN ELECTRICALLY CONDUCTIVE WALL OF A HOUSING Background of the Invention The present invention relates to a connection device for an electrical arrangement shielded by an electrically conductive wall of a housing, including a plastic contact-carrier member that is insertable into an opening of the wall and a plurality of contact elements mounted on the contact-carrier member and piercing the contact carrier member transversely of the wall.
Connection devices of this type are used in many fields, including motor vehicles. Particularly when used in the motor vehicles, it is important that such connection devices not only be mechanically tight in order to avert soiling, but also that they assure adequate electromagnetic shielding of the electrical arrangement, with a view to freedom from electrical interference. These requirements are not optimally met by prior art connection devices. It is therefore an object of the present invention to provide a connection device of the type referred to that assures both complete mechanical sealing and complete electromagnetic shielding.
Summarv of the Invention According to the invention, this and other objects are attained by providing a plastic contact-carrier member which includes a shielding plate electrically connectable to the housing wall and pierced by the contact elements, each contact element having separately associated therewith a lead-through capacitor which is electrically connected to the shielding plate and which is penetrated by the associated contact element.
By disposing the shielding plate, connected to the lead-through capacitors, on the plastic contact carrier member, the electrical arrangement located in the housing can be both mechanically sealed off and electromagnetically shielded in the manner of a Faraday cage. Hence shielded electronic components can be connected in a manner protected against interference, particularly in a motor vehicle, to units disposed outside the shielding.
The connection device of the invention may be made up of simple, individual component parts by inserting the lead-through capacitors into openings of the shielding plate and joining them at their outer contours to the shielding plate, e.g. by soldering. It is advantageous if the contour of the openings is substantially identical to the outer contour of the lead-through capacitors For increased mechanical stability, at least some of the lead-through capacitors are preferably disposed close together, i.e., side by side, and joined directly to one another, e.g. by soldering, along their outer circumferences.
Both stable retention of the contact elements and favorable shielding properties are achieved in accordance with the invention by employing lead-through capacitors having an annular-cylindrical shape in cross section and joining their outer circumferences to the shielding plate and their inner circumferences to the contact elements, both preferably by soldered connections. The lead-through capacitors may, however, also readily have a rectangular or square cross section. The soldering operation not only produces the electrical connections between the components but also increases the mechanical strength of the connection device.
For ease of manufacture and to save material, the shielding plate is preferably substantially flat.
The contact-carrier member can be disposed on the housing wall in a reliably sealed manner by providing a flange on the contact carrier member having regions intended for abutting support against the wall, with the shielding plate being imbedded in the contact carrier member and having one or more electrical contact regions that overlay the regions of the flange intended for support against the wall of the housing.
Thus electrical contact between the shielding plate and the electrically conductive housing wall, as well as the desired electrical shielding, is automatically brought about in a reliable fashion when the contact carrier member is mounted on the wall. It is advantageous if the contact region(s) of the shielding plate is offset toward and parallel to the bearing face of the flange, relative to the regions of the shielding plate joined to the lead-through capacitors.
The connection device can be adapted especially well to a plug if it is embodied as a plug receptacle, with the contact carrier member having a bottom with a flange, intended for support against the wall of the housing, and a wall region protruding from the bottom substantially at a right angle, and furthermore if the shielding plate is disposed in the region of the bottom and the contact elements are embodied as contact pins that are parallel to the wall region and penetrate the bottom. As a result, it is possible to provide both the mechanical and the electromagnetic sealing in the plane of the bottom of the plug receptacle.
An especially stable mechanical juncture of an electrical plug to the connection device, which also protects the electrical contacts against soiling, is provided if a wall region of the plug receptacle, together with its bottom, forms a cup, the flange for securing the receptacle to the housing wall protrudes outward from the region of the bottom, and the shielding plate protrudes outward beyond the wall region of the plug receptacle such that the electrical contact regions cf the shielding plate rest on surfaces of the flange intended for support against the wall of the housing. Thus by the procedure, known per se, of screwing the plug receptacle to the housing, a stable electrical connection between the shielding plate and the housing wall can be automatically established.
The connection device can be embodied in an especially space-saving way if the wall region has an approximately annular-cylindrical shape, and the flange has an approximately square outer contour whose sides are of a length approximately equal to the outside diameter of the wall region. The shielding plate likewise preferably has a square contour, correspondingly approximately to the contour of the flange, in which the corner regions form the electrical contact regions. As a result, the mating portion of the associated plug may also take an annularcylindrical configuration and mechanical sealing therebetween can be assured in a simple way by means of one or more O-rings.
It is also conceivable for the wall region and/or the flange to be given some other cross-sectional shape. It may, for instance, be advantageous for the flange to be annular and the contact region of the shielding plate to form an uninterrupted annular region resting on the housing wall. Particularly when space is tight, however, a square shape of the flange is especially suitable, because the plug receptacle occupies little space, and nevertheless the shielding plate can be joined at the four corners of the flange to the electrically conductive housing wall.
If the shielding plate, the lead-through capacitors, and the contact elements are adapted to one another in such a way that they form a preassembled component that can be manipulated independently of the contact-carrier member, then the connection device can be manufactured in a simple way, particularly with a view to embedding this preassembled component in the plastic material of the contact-carrier member.
Advantageously, the preassembled component may be tightly extrusion-coated with plastic material. This also affords the opportunity of checking the electrical properties of the connection device in the modular preassembled component before it is embedded in plastic. By using this kind of pre-assembleable module, which is tightly extrusion-coated with the plastic material of the contact-carrier member, perfect mechanical sealing is assured by the plastic extrusion coating. The contact elements, embodied particularly as contact pins, are thus both fixedly disposed and tightly held. If the contact elements are also soldered to the lead-through capacitors, this not only assures a reliable electrical connection but further increases the mechanical strength of the module.
Brief DescriPtion of the Drawings The invention is described in the accompanying drawings, in terms of an exemplary embodiment, in which: Fig. 1 is a longitudinal section through a connection device according to the invention, taken along the line I-I of Fig. 2; Fig. 2 is a plan view, in the direction of the arrow II of Fig. 1, of the connection device of Fig. 1; and Fig. 3 is a plan view, corresponding to Fig. 2, of the shielding plate of the connecting device of Fig. 1.
Description of an ExemDlarv Embodiment In Fig. 1, the connection device, embodied as a plug receptacle, is identified by reference numeral 1.
The plug receptacle 1 has a bottom 4, which is provided with a radially outwardly extending flange 5. In the installed state of the plug receptacle 1, the bottom 4 and flange 5 extend parallel to an electrically conductive wall 2 of a housing, not shown in further detail. The plug receptacle includes an annularcylindrical wall region 6 extending approximately perpendicularly from the bottom 4 and through an opening 3 in the housing wall 2. A thread 17 is provided on the outside of the cylindrical wall 6 on side of the housing wall 2 opposite the flange 5, so that a firm, tight connection between the plug receptacle 1 and the housing wall 2 can be established via a nut 16 and, optionally, a compression ring 15 and an O-ring 14. The wall region 6 is preferably annularcylindrical in cross section, but may also be square or rectangular in shape.The cylindrical shape has the advantage that the mating portion of the plug (not shown) received by the plug receptacle may also be of a generally cylindrical configuration, and inexpensive, functionally reliable sealing can be achieved via an 0ring 14. For purposes of an exact alignment of the plug and the plug receptacle 1, a molded pin 13 is provided to project centrally from the bottom 4 of the plug receptacle 1 and is non-cylindrical in cross section (see Fig. 2).
A shielding plate 9 is embedded in the bottom 4 of the plug receptacle 1 and is provided with lead-through capacitors 11, through which contact pins 7 extend.
The contact pins 7 extend substantially perpendicular to the bottom 4 and thus also perpendicular to the shielding plate 9. If desired, the lead-through capacitors 11 may also be accessible from the side of the bottom 4 opposite the wall region 6.
In the region of its outer contour, the shielding plate 9 is formed with one or more contact regions 12 which are offset from and parallel to the plane of the shielding plate in the region of the capacitors 11 and which rest on the bearing surface of the flange 5. In the assembled state of the plug receptacle 1 shown in Fig. 1, the contact regions 12 rest directly on the housing wall 2. Hence, when electrically conductive material is used for the housing wall 2, a direct electrical contact is established between the wall 2 and the shielding plate 9.
The contact pins 7 extend a sufficient distance within the annular-cylindrical wall region 6 of the plug receptacle 1 that they can make a secure electrical connection with the associated plug when it is introduced and retained in the receptacle 1. On the opposite side of the bottom 4, the contact pins 7 are electrically and mechanically connected to a printed wiring board 8 or other electrical component which, for example, may be part of an electrical or electronic control unit.
As seen particularly clearly in Fig. 2, the outer contour of the flange 5 is generally square, with a length of each side that corresponds approximately to the outside diameter of the annular-cylindrical wall region 6. In this way, a plug receptacle of particularly space-saving configuration is formed. If more space is available, it is readily possible for the flange 5 to extend concentrically with and spaced apart accordingly from the annular-cylindrical wall region 6.
In the view shown, the contact pins 7 and the molded pin 13 can be seen inside the annular-cylindrical wall region 6. In Fig. 2, the plug receptacle 1 is shown as a pre-fabricated component, which has not yet been connected to the printed wiring board 8 as in Fig. 1.
The four contact regions 12 of the shielding plate 9, by which electrical connection with the housing wall 2 is made in the installed state, can be seen in the four corner regions of the flange 5, opposite the annularcylindrical wall region 6.
Fig. 3 is a plan view of the shielding plate 9.
This shows a substantially flat sheet-metal part with a plurality of openings 10, into each of which a leadthrough capacitor 11 is to be inserted. The shape of the openings 10 conforms to the outer contour of the lead-through capacitors 11, which in the embodiment shown are generally cylindrical. The lead-through capacitors 11 are inserted into the plate 9 and electrically connected to it, preferably by a soft solder connection. For increased stability, the leadthrough capacitors 11 may also be soldered to one another at their adjacent outer circumferential regions, as shown in Fig.3. The same connection is preferably made between the outer contours of contact pins 7 and the inside contour of the lead-through capacitors 11. It is advantageous to carry out this soldering process in one operation.As mentioned, the shielding plate 9 is provided in its peripheral regions, in the present case in the four corners, with contact regions 12, which are offset from and parallel to the plane of the shielding plate 9, so that, upon assembly, the regions 12 are captured between the facing surfaces of the flange 5 and the housing wall 2.
During manufacture of the plug receptacle 1, the shielding plate 9, lead-through capacitors 11 and contact pins 7 are assembled into a module, checked for electrical integrity, and then, in an injection molding machine, extrusion-coated with plastic material to complete the plug receptacle 1. It may also be advantageous, however, not to make the aforementioned soldered connections until after the components have been embedded in the plastic material. After completion, the plug receptacle is mechanically and electrically connected to the printed wiring board 8.
The plug receptacle and the unit containing the board 8 can thus be inserted into the housing through an opening 3 in the housing wall 2 and mechanically joined thereto by the nut 16, compression ring 16 and O-ring 14.
This construction assures complete mechanical sealing, as a result of the gap-free extrusion coating of the module with the material of the plug receptacle, and a tight Faraday cage is formed, which assures reliable function of the electrical components, even in a motor vehicle that has electromagnetic interference fields.
Although the invention has been described herein by reference to a particular embodiment thereof, it will be understood that such embodiment is susceptible of modification without departing from the inventive concepts disclosed. All such modifications, therefore, are intended to be included within the spirit and scope of the appended claims.

Claims (13)

Claims
1. In a connection device (1) for an electrical arrangement (8) shielded by an electrically conductive wall (2) of a housing, said device including a contact carrier member (4, 5, 6) composed of plastic material having a portion that is insertable into an opening (3) of the wall (20, and a plurality of contact elements (7) mounted on the contact-carrier member element (4, 5, 6) so as to pierce said member (4, 5, 6) transversely to the wall (2), wherein the improvement comprises: a shielding plate (9) on said contact carrier element (4, 5, 6) for electrical connection to the wall (2); said shield plate (9) being pierced by the contact elements (7); a lead-through capacitor (11) associated separately with each contact element (7), each capacitor (11) being electrically connected to the shielding plate (9) and penetrated by the associated contact element (7).
2. A connection device in accordance with claim 1, wherein the lead-through capacitors (11) are inserted into respective openings (19) in the shielding plate (9) and are joined at their outer peripheries to the shielding plate (9).
3. A connection device in accordance with claim 2, wherein the contour of the openings (10) is substantially identical to the outer contour of the lead-through capacitors (11).
4. A connection device in accordance with claim 2 or 3, wherein at least a plurality of the lead-through capacitors (11) are disposed in side-by-side relation and are joined directly to one another at their outer peripheries.
5. A connection device in accordance with one of claims 2 to 4', wherein each lead-through capacitor (11) has an annular-cylindrical cross section and is joined at its outer periphery to the shielding plate (9) and at its inner periphery to the associated contact element (7).
6. A connection device in accordance with one of claims 1 to 5, wherein the shielding plate (9) is substantially flat.
7. A connection device in accordance with claim 6, wherein: the contact carrier member (4, 5, 6) includes a flange (5) for engaging the wall (2); and the shielding plate (9) is embedded in the contact carrier member (4, 5, 6) and includes at least one contact region (12) which overlies the bearing face of the flange (5) so as to make electrical contact with the wall (2) of the housing when the flange (5) engages the wall (2).
8. A connection device in accordance with claim 7, wherein the contact region (12) of the shielding plate (9) is offset towards and parallel to the bearing face of the flange (5) relative to the region of the plate (9) joined to the lead-through capacitors (11).
9. A. connection device in accordance with one of claims 1 to 8, wherein the connection device comprises a plug receptacle (1), and wherein: the contact carrier member (4, 5, 6) includes a bottom (4 with a flange (5), intended for support against the wall (2) of the housing, and a wall region (6) protruding from the bottom (4) substantially at a right angle; the shielding plate (9) is disposed in the region of the bottom (4); and the contact elements (7) comprise contact pins that are parallel to the wall region (6) and penetrate the bottom (4).
10. A connection device in accordance with claim 9, wherein: the wall region (6) and the bottom (4) of the plug receptacle (1) form a cup; the flange (5) protrudes radially outward from the region of the bottom (4); and the shielding plate (9) protrudes outward beyond the wall region (6) and forms a contact region (12) adjacent the bearing surface of the flange which engages the wall (2) of the housing.
1. A connection device in accordance with claim 10, wherein the wall region (6) has an approximately annular-cylindrical shape, wherein the flange (5) has an approximately square contour whose sides are of a length approximately equal to the outside diameter of the wall region (6), and wherein the shielding plate (9) likewise has a square contour corresponding approimately to the contour of the flange (5), the corner regions (12) thereof forming the contact regions.
12. A connection device'in accordance with one of claims 1 to 11, wherein the shielding plate (9), the lead-through connectors (11), and the contact elements (7) are secured to one another so as to form a preassembled component that can be manipulate: independently of the contact-carrier member (4, 5, 6).
13. A connection device in accordance with claim i2, wherein the preassembled component is extrusion coated with plastic material to form said contact carrier member (4, 5, 6).
GB9324636A 1992-12-04 1993-12-01 Connection device for an electrical arrangement shielded by an electrically conductive wall of a housing Expired - Fee Related GB2273210B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4240836 1992-12-04

Publications (3)

Publication Number Publication Date
GB9324636D0 GB9324636D0 (en) 1994-01-19
GB2273210A true GB2273210A (en) 1994-06-08
GB2273210B GB2273210B (en) 1996-08-07

Family

ID=6474400

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9324636A Expired - Fee Related GB2273210B (en) 1992-12-04 1993-12-01 Connection device for an electrical arrangement shielded by an electrically conductive wall of a housing

Country Status (2)

Country Link
FR (1) FR2699011B1 (en)
GB (1) GB2273210B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015211512A1 (en) * 2015-06-23 2016-12-29 Conti Temic Microelectronic Gmbh Contact element and method for fixing such a contact element

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3579155A (en) * 1967-02-01 1971-05-18 Bunker Ramo Filtered connector pin contact
US3854107A (en) * 1970-07-17 1974-12-10 Bunker Ramo Filtered connector
GB1489853A (en) * 1975-04-28 1977-10-26 Amp Inc Electrical connector
US4519665A (en) * 1983-12-19 1985-05-28 Amp Incorporated Solderless mounted filtered connector
GB2179210A (en) * 1985-08-16 1987-02-25 Itt Filter connector
US4929196A (en) * 1989-08-01 1990-05-29 Molex Incorporated Insert molded filter connector
US5057041A (en) * 1990-06-29 1991-10-15 Foxconn International User configurable integrated electrical connector assembly
EP0487984A2 (en) * 1990-11-27 1992-06-03 THOMAS &amp; BETTS CORPORATION Filtered plug connector
US5167536A (en) * 1992-02-20 1992-12-01 Wang Tsan Chi Capactive coupled BNC type connector

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58107614U (en) * 1982-01-18 1983-07-22 株式会社村田製作所 noise filter
JP2546590Y2 (en) * 1991-05-31 1997-09-03 日本エー・エム・ピー株式会社 Filter connector and shield plate for filter connector
US5145412A (en) * 1991-10-18 1992-09-08 Foxconn International, Inc. Filter connector

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3579155A (en) * 1967-02-01 1971-05-18 Bunker Ramo Filtered connector pin contact
US3854107A (en) * 1970-07-17 1974-12-10 Bunker Ramo Filtered connector
GB1489853A (en) * 1975-04-28 1977-10-26 Amp Inc Electrical connector
US4519665A (en) * 1983-12-19 1985-05-28 Amp Incorporated Solderless mounted filtered connector
GB2179210A (en) * 1985-08-16 1987-02-25 Itt Filter connector
US4929196A (en) * 1989-08-01 1990-05-29 Molex Incorporated Insert molded filter connector
US5057041A (en) * 1990-06-29 1991-10-15 Foxconn International User configurable integrated electrical connector assembly
EP0487984A2 (en) * 1990-11-27 1992-06-03 THOMAS &amp; BETTS CORPORATION Filtered plug connector
US5167536A (en) * 1992-02-20 1992-12-01 Wang Tsan Chi Capactive coupled BNC type connector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015211512A1 (en) * 2015-06-23 2016-12-29 Conti Temic Microelectronic Gmbh Contact element and method for fixing such a contact element
DE102015211512B4 (en) 2015-06-23 2018-06-14 Conti Temic Microelectronic Gmbh Contact element and method for fixing such a contact element

Also Published As

Publication number Publication date
FR2699011B1 (en) 1996-09-20
GB9324636D0 (en) 1994-01-19
FR2699011A1 (en) 1994-06-10
GB2273210B (en) 1996-08-07

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20001201