EP0294433B1 - Gefilterte elektrische vorrichtung und verfahren, um diese herzustellen - Google Patents

Gefilterte elektrische vorrichtung und verfahren, um diese herzustellen Download PDF

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Publication number
EP0294433B1
EP0294433B1 EP88900408A EP88900408A EP0294433B1 EP 0294433 B1 EP0294433 B1 EP 0294433B1 EP 88900408 A EP88900408 A EP 88900408A EP 88900408 A EP88900408 A EP 88900408A EP 0294433 B1 EP0294433 B1 EP 0294433B1
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EP
European Patent Office
Prior art keywords
contact portions
electrical
members
contact
filter
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Expired - Lifetime
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EP88900408A
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English (en)
French (fr)
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EP0294433A1 (de
Inventor
Douglas James Pirc
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TE Connectivity Corp
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Whitaker LLC
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Publication of EP0294433A1 publication Critical patent/EP0294433A1/de
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/719—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters
    • H01R13/7195—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters with planar filters with openings for contacts

Definitions

  • This invention relates to electrical connectors and more particularly to filtered electrical connectors and filtering devices for providing protection against electromagnetic interference and radio frequency interference.
  • ESD electrostatic discharges
  • EMP electromagnetic pulse
  • any filter connector should also in many instances retain substantially the same dimensions as the unfiltered version and should have the same contact arrangement so that either can be connected to an appropriate mating connector. Additionally, it is sometimes desirable to filter only certain lines within a connector and to use the same basic connector in a number of applications, each requiring different selected lines to be filtered.
  • shielding One means to protect against undesirable interference without altering the internal structure of a connector is by the use of shielding.
  • the shielding may take several forms. For adequate protection, it is essential, however, that there be no break in continuity of the shielding.
  • an external filtering device that is an "add-on" device to provide filtering to an already existing non-filtered connector. This is particularly desirable in instances when the same basic connector may be used in a number of different applications, each requiring filtering of different lines in the connector. It is also desirable that a method be found that will lend itself to automation of the assembly line by robotic devices and the like that will enable filtered connectors to be manufactured on a more cost effective manner.
  • an electrical component which can be secured to an electrical article such as an electrical connector, the component being engageable to circuit paths of the article to provide filtering for those circuit paths.
  • the electrical component is comprised of a dielectric housing member having a plurality of contact members secured therein and housing a plurality of filter receiving apertures along a first face thereof.
  • an electrical component for being secured to an electrical article and being electrically engageable with circuit paths thereof for filtering the circuit paths, the component including housing means having filter receiving aperture means extending along a face thereof and having filter means disposed therein, the aperture means further including contact portions for engaging respective signal and ground circuit paths of the filter means.
  • This known electrical component has apertures extending therethrough for receiving mating terminals of a pair of electrical connectors so that these terminals are electrically connected to said filter means.
  • An electrical component according to the present invention for being secured to an electrical article and being electrically engageable with circuit paths thereof for filtering the circuit paths, is characterized in that a plurality of contact members are secured to the housing means along a side thereof, the contact members have first and second contact portions, the first contact portions extending outwardly from a first side of the housing means and being electrically engageable with corresponding contact sections of the circuit paths of the electrical article, the second contact portions extending into the filter receiving aperture means and being exposed therein; for electrical engagement with corresponding signal paths of respective filter means; third contact portions are paired with the second contact portions and are spaced therefrom, the third contact portions extending into the filter receiving aperture means and being exposed therein for electrical engagement with corresponding ground paths of respective filter means, the filter means being disposed in the filtering aperture means such that the signal and ground paths are electrically joined to selected pairs of associated second and third contact portions; bus means is secured in the housing means and extends from the third contact portions, the bus means being adapted to be engaged by and secured to said grounding means; and connecting
  • the electrical component can be connected to an associated electrical article by electrically engaging the first contact portions to respective circuit paths of the electrical article and the bus means to a grounding means for the article, the housing member of the component.
  • the housing member of the electrical component is secured to an external surface of the electrical article.
  • Another object of the invention is to provide a method for manufacturing a filter device that may be used to retrofit existing connectors.
  • a method according to the present invention, of making an electrical component according to the present invention is defined in claim 10.
  • a filtering device 10 is designed to be used with an electrical article to provide filtering for selected circuit paths of the articles.
  • Device or component 10 is comprised of a plurality of contact members 12, a dielectric housing member 40, and filter members 54.
  • Contact members 12 have first and second contact portions 14 and 24 respectively.
  • First contact portions 14 are engageable with corresponding contact portions of an electrical article.
  • First contact portions 14 are secured in the housing member 40.
  • Dielectric housing member 40 includes a plurality of filter receiving apertures 48 along a first face 42 thereof.
  • Second contact portions 24 are exposed along a bottom surface 50 of respective apertures 48.
  • Third contact portions 30 are paired with second contact portions 24 and are spaced therefrom at 28. Third contact portions 30 are also exposed along the bottom surface 50 of respective filter receiving apertures 48.
  • Bus means 34 is secured in housing member 40, said bus means 34 extending outwardly from the third contact portion 30 and being adapted to be engaged by grounding means on an electrical article.
  • a plurality of filter members 54 are disposed in respective filter receiving apertures 48 of housing member 40 and electrically joined to respective pairs of second contact portions 24 and third contact portions 30.
  • Filter members 54 are surface mounted components, such as chip capacitors, resistors, unipolar or bipolar diodes, or the like.
  • First contact portions 14 further have connecting means 18 having aperture 20 therein for electrically connecting first contact portion 14 corresponding contact members of an electrical article as explained below.
  • electrical device 10 preferably is made in continuous form by stamping and forming a plurality of lead frames 60 in strip 58 of suitable flat stock metal such as copper, phosbronze, or the like as known in the art.
  • Strip 58 is first stamped to form first and second carrier strips 62, 66 having a plurality of essentially parallel cross bar members or contact means 70 extending between carrier strips 62, 66 as is shown in Frame A.
  • Cross bar members 70 become contact member sections 14, 24 and 30 in the assembled device.
  • Carrier strips 62, 66 have apertures 64 and 68 therein which are used for aligning strip 58 in the manufacturing and assembly process. If desired, cross bar members 70 may be plated on the desired contact area.
  • Housing members 40 are then insert molded around portions of the stamped members, each housing encompassing the desired number of cross bar members. A plurality of filter receiving apertures 48 are also formed, one aperture 48 being associated with each cross bar member 70 within housing 40.
  • housing members 40 are located and molded on strip 58 such that carrier strip 66 becomes bus bar 34 of severed device 10.
  • the material used for molding the housings is preferably one that will withstand the temperatures associated with vapor flow soldering techniques.
  • One preferred material is polyphenylene sulfide, available from Phillips Petroleum Co. under the trade name Ryton R . Other suitable materials are known in the art.
  • cross bar members 76 extend completely across apertures 48.
  • a portion of cross bar members 70 is removed at 74 to form the three contact portions 14, 24 and 30 of device 10. Concomitantly, a portion of underlying dielectric housing material is also removed. Carrier strip 62 may be removed at the same time or during a subsequent step. It is to be understood that cross bar members 70 may be separated prior to insert molding, if desired, and that cross bar members 70 between adjacent housing members 40 may be severed at this time or when individual devices 10 are severed from the strip. First contact portions 14 are then bent and formed. Lastly, filter members 54 are mounted and preferably soldered in their respective apertures.
  • filtered devices 10 can be completely formed on the strip while remaining attached to carrier strip 66.
  • the strip of filter devices can be rolled onto a reel (not shown) until device 10 is ready to be assembled to an electrical article.
  • Individual devices 10 can be severed at 59 from the strip as needed.
  • carrier strip 66 becomes bus bar 34.
  • strip 58 may be stamped and formed, rolled on a reel (not shown), and later formed into electrical devices 10 in accordance with the invention.
  • the length of housing member 40 and the number of contact members 12 therein is determined at the time of molding and strip 58 is stamped such that a plurality of differing length housing members 40 can be molded.
  • the molding machine can be programmed to index a selected number of cross bar members 70.
  • the strip is moved to a stamping station to stamp and form the device of the desired configuration.
  • Insertion of the filter members 54 lends itself to pick and place robotic systems.
  • the well-defined apertures 48 can be aligned so that the equipment can place filter members 54 between the second and third contact portions 24 and 30 at selected locations.
  • Figures 4 and 5 illustrate the use of device 10 with electrical connector 80 comprised of dielectric housing member 82 having a plurality of apertures 84 extending therethrough, a plurality of electrical terminal members 86 disposed in respective apertures 84, and conductive ground shell means 90.
  • Terminal members 86 have terminal post sections 88 extending rearwardly of housing member 82.
  • Device 10 in accordance with the preferred embodiment, has a generally rectangular housing member 40 having a plurality of filter members 54 preferably extending slightly outwardly from a plurality of filter receiving apertures 48.
  • First contact portions 14 are bent at right angles so that device 10 can be mounted to an electrical connector housing 82 with each of the first contact portions 14 engaged with respective terminal posts 88.
  • Bus bar 34 extends from the opposite side of the housing and is designed to be engaged with a ground plane of the connector 80.
  • filter device 10 is mounted on the surface of the connector housing 82 such that bus bar 34 can be electrically connected to ground shell means 90 by solder.
  • Apertures 20 in the first section of contact member 12 engage respective terminal post sections 88 of connector 80 and are soldered thereto. It is to be understood that this electrical connector is merely a representative sample of the types of connector with which this device may be used. It is to be further understood that other pin or socket terminals may also be used.
  • Connector 80 as disclosed in Figures 4 and 5 has two rows of terminal members. It is, therefore, necessary to use two electrical devices 10 in accordance with the invention, one device being mounted to each side of connector housing 82, with first contact portions 14 of each device 10 electrically connected to only one row of the terminal posts 88 and respective bus bars 34 soldered to ground shell 90.
  • Figures 6 and 7 show an alternative embodiment 158 of stamped metal strip for forming lead frames for device 110.
  • the portion of cross bar member 170 that will become first contact portion 114 further includes a slot 122 having an enlarged portion 123 for receiving an insulated wire and a narrower portion 125 for piercing the insulated wire as can best be seen in Figure 7.
  • slot 122 is located in first contact portion 114 between aperture 120 which receives terminal posts 88 and housing 140.
  • Carrier strip 162 is severed to form bus bar 134, which extends from third contact portion 130.
  • device 110 is formed in the same manner as device 10 and is mounted to a connector in the same manner as previously described.
  • FIGS 8 to 9 illustrate electrical connector assembly 300 in which filtering device 110 is used as an interconnecting means to interconnect selected lines of a first connector 180 to lines of a second connector 280.
  • Connector assembly 300 is comprised of first and second dielectric shell members 301, 302, a first connector 180, filtering devices 110 secured to first connector 180, and a second connector 280. Selected terminal posts 192 of said first connector 180 are interconnected through filtering device 110 to lines 292 of the second connector.
  • First connector 180 has the same general structure as connector 80 shown in Figures 4 and 5 and previously described. The difference between connector 80 and 180 is that filtering device 110 contains the lead frame embodiment of Figure 6 wherein the first contact section 114 includes the wire terminating slot 122 as best seen in Figure 7.
  • Second connector 280 is comprised of a dielectric housing member 282 having a plurality of passageways 284 therethrough in which are disposed a plurality of terminal members (not shown). The terminal members are terminated to one end from conductor wire members 294 which extend rearwardly of housing member 282.
  • first and second connectors 180, 280 By terminating the other ends of wire members 294 in selected insulation displacement slots 122 of the first contact portions, selected lines of first and second connectors 180, 280 can be interconnected.
  • first and second connectors 180, 280 are encased in shell members 301, 302.
  • shell members 301 and 302 are profiled to accept a modular plug 305 which will mate with connector 280.
  • First and second shell members 301, 302 are secured together by means of snap features 311 molded into the shell members. Jack screws 306 are used to attach connector 300 to a complementary connector (not shown).
  • Figure 9 shows the completed compact package containing the two connectors and a modular plug 305 connected to cable 307 inserted into back 308 of connector assembly 300.
  • Connector assembly 300 provides a relatively compact package and means for filtering an existing connector and for selectively filtering the interconnection between two connectors while maintaining the mating configuration of both connectors.
  • FIGS 10 and 10A illustrate another connector 380, in this instance a modular jack, having alternative embodiment 210 of the filtering device of the present invention mounted to the back thereof.
  • first contact sections 214 are spring loaded against corresponding terminal members (not shown) of connector 380.
  • the terminal members lie within respective passageways 384 in connector housing 382.
  • adjacent apertures 248 having filter members 254 therein are staggered in housing member 240.
  • Grounding of filter device 210 is achieved through ground leg members 98 which extend from the lower end of device 210 and engage circuit conductors on circuit board 99 as can best be seen in the cross-sectional view of Figure 10A.
  • FIGS 11 and 11A show a filter device 310 made in accordance with the invention for mounting directly to a circuit board 101 wherein the first contact sections 312 engage apertures 103 in the circuit board 101, apertures 103 being electrically connected to a circuit path 105 with which a further electrical connector may be engaged.
  • Filter members 354 are placed in staggered apertures 348 owing to space limitations.
  • the bus bar in this device is also connected to ground through leads 107 as shown in Figure 11.
  • the electrical connectors used with the present device are representative samples only. It is to be further understood that frame and shape and types of connectors with which this device may be used are numerous. By filtering electrical connectors with an externally mounted filtering device, it is possible to selectively filter lines by omitting filter members from the various apertures. This allows the same basic connector to be filtered readily, in a variety of configurations and in a cost-effective manner. By making a filtered device in accordance with this manner, the filtering device lends itself to cost-effective manufacturing process which includes automatic equipment such as pick and place robots. Lead frame technology and insert molding lend themselves to continued automated manufacturing process which minimizes handling of the device as well as time and labor.
  • the device uses small filtered capacitors, transient suppression diodes, resistors, or other components that are designed to be in parallel with the circuit, between pin and ground.
  • the components used for any one connector need not be identical and selected frequencies may be controlled by placing filter devices of varying capabilities at selected locations.
  • the filter device of the present invention is designed for filtering in the lower frequency ranges, preferably not to exceed 500 megahertz.

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Claims (9)

  1. Elektrische Komponente (10) zur Befestigung an einem elektrischen Gegenstand, die elektrisch mit dessen Strombahnen zum Filtern der Strombahnen in Eingriff bringbar ist, wobei die Komponente ein Gehäuse (40) aufweist, das Filteraufnahmeöffnungen (48) hat, die sich längs einer Fläche desselben erstrecken und in denen Filter (54) angeordnet sind, wobei die Öffnungen ferner Kontaktteile zum Eingriff mit entsprechenden Signal- und Erdstrombahnen der Filter aufweisen, wobei die elektrische Komponente (10) dadurch gekennzeichnet ist,
    - daß eine Vielzahl von Kontaktgliedern (12) an dem Gehäuse (40) längs einer Seite desselben befestigt ist, wobei die Kontaktglieder erste und zweite Kontaktteile (14, 24) haben, wobei sich die ersten Kontaktteile (14) nach außen von einer ersten Seite des Gehäuses (40) erstrecken und elektrisch mit entsprechenden Kontaktabschnitten der Strombahnen des elektrischen Gegenstands verbindbar sind, wobei die zweiten Kontaktteile (24) sich in die Filteraufnahmeöffnungen (48) erstrecken und darin zum elektrischen Eingriff mit entsprechenden Signalbahnen entsprechender Filter (54) freiliegen,
    - daß dritte Kontaktteile (30) mit den zweiten Kontaktteilen (24) gepaart und von diesen beabstandet sind, wobei die dritten Kontaktteile (30) sich in die Filteraufnahmeöffnungen (48) erstrecken und darin zum elektrischen Eingriff mit entsprechenden Erdbahnen entsprechender Filter (54) freiliegen, wobei die Filter (54) in den Filteröffnungen (48) derart angeordnet sind, daß die Signal- und Erdbahnen elektrisch mit ausgewählten Paaren zugehöriger zweiter und dritter Kontaktteile (24, 30) verbunden sind,
    - daß eine Anschlußleitung (Bus 34) an dem Gehäuse (40) befestigt ist und sich von den dritten Kontaktteilen (30) erstreckt, wobei die Anschlußleitung (34) so ausgebildet ist, daß sie in Berührung mit Erdungsmitteln steht und an diesen befestigt ist,
    - und daß Verbindungsmittel (20) an den ersten Kontaktteilen (14) die ersten Kontaktteile (14) elektrisch mit Kontaktabschnitten des elektrischen Gegenstandes verbinden und mechanisch daran befestigen,
    - wodurch, wenn die ersten Kontaktteile (14) in Eingriff mit entsprechenden Strombahnen des elektrischen Gegenstandes stehen und die Anschlußleitung (34) in Verbindung mit den Erdungsmitteln steht, die Filter (54) einen Filterschutz für den elektrischen Gegenstand bieten.
  2. Elektrische Komponente (10) nach Anspruch 1, dadurch gekennzeichnet, daß die Filteraufnahmeöffnungen (48) eine Vielzahl diskreter Öffnungen (50) aufweisen, von denen jede zur Aufnahme eines Filters (54) darin gestaltet ist, wobei die zweiten Kontaktteile (30) längs eines Bodens der Filteraufnahmeöffnungen (48) angeordnet sind.
  3. Elektrische Komponente (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Filter (54) mit ausgewählten Paaren der zweiten und dritten Kontaktteile (24, 30) an der Oberfläche verbunden ist.
  4. Elektrische Komponente (10) nach Anspruch 2, dadurch gekennzeichnet, daß die diskreten Filteraufnahmeöffnungen (50) jeweils ein Paar zugehöriger zweiter und dritter Kontaktabschnitte (24, 30) darin aufweisen.
  5. Elektrische Komponente (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Anschlußleitung (34) längs einer zweiten Seite an dem Gehäuse (40) befestigt ist und sich von diesem nach außen erstreckt, wobei die zweite Seite der ersten Seite entgegengesetzt ist.
  6. Elektrische Komponente (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß jeder der ersten Kontaktteile (14) der elektrischen Komponente eine Öffnung (20) zur Aufnahme von Kontaktgliedern des elektrischen Gegenstands aufweist.
  7. Elektrische Komponente nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß die ersten Kontaktteile (14) der elektrischen Komponente so ausgebildet sind, daß sie Leiter (294) aufnehmen können, die elektrisch in Verbindung mit Strombahnen eines elektrischen Verbinders (180) stehen, und daß ausgewählte Strombahnen des elektrischen Verbinders mit ausgewählten Strombahnen eines anderen elektrischen Verbinders (280) verbunden werden können, um eine Filterung für diese miteinander verbundenen Strombahnen zu bieten, während die Zusammengefügte Gestalt der beiden elektrischen Verbinder (180, 280) aufrechterhalten wird.
  8. Elektrische Komponente (110) nach Anspruch 1, dadurch gekennzeichnet, daß sie in Kombination mit ersten und zweiten elektrischen Verbindern (180, 80) angeordnet ist, um so ausgewählte Strombahnen der elektrischen Verbinder (180, 280) miteinander zu verbinden und selektiv zu filtern, während die Zusammengefügte Gestalt der beiden Verbinder (180, 280) aufrechterhalten wird, daß die ersten und zweiten Verbinder erste und zweite Anschlußglieder haben, daß die ersten Kontaktteile (114) der elektrischen Komponente (110) elektrisch in Verbindung mit entsprechenden Anschlußgliedern (88) des ersten elektrischen Verbinders (180) stehen, daß die Anschlußleitung (34) der Komponente (110) mit Erdungsmitteln des ersten elektrischen Verbinders (180) verbunden ist, daß Einrichtungen zur elektrischen Verbindung ausgewählter erster Teile (114) der elektrischen Komonente (110) mit Anschlußgliedern des zweiten elektrischen Verbinders (280) vorgesehen sind und daß die elektrische Komponente (110) an einer äußeren Oberfläche des ersten Verbinders (180) angebracht ist.
  9. Verfahren zum Herstellen elektrischer Komponenten (10) nach Anspruch 1, wobei das Verfahren die folgenden Schritte aufweist:
    - Vorsehen erster und zweiter länglicher, im wesentlichen paralleler Trägerstreifen (62, 66), die eine Vielzahl von im wesentlichen parallelen Querstegen (70) haben, die sich dazwischen quer erstrecken, und die eine Vielzahl von Führungsrahmen (60) definieren, wobei jeder Führungsrahmen (60) eine Gruppe der Querstege (70) aufweist, die zu den ersten und zweiten Kontaktteilen (14, 24) der Komponenten (10) verarbeitet werden sollen, und wobei sich die Trägerstreifen (62, 66) zwischen diesen Querstegen (70) erstrecken, wobei die Querstege (70) jeweils einen ersten, einen mittleren und einen zweiten Abschnitt haben,
    - Formen eines dielektrischen Gehäuses (40) über dem mittleren Abschnitt jedes der Querstege (70) der Führungsrahmen (60), wobei jedes Gehäuse (40) so geformt wird, daß die mittleren Abschnitte der Querstege sich zwischen den Hauptseiten des Gehäuses (40) und die ersten und zweiten Abschnitte der Querstege sich von den Hauptseiten des Gehäuses nach außen erstrecken, wobei die ersten Abschnitte der Querstege sich von dem Gehäuse (40) wesentlich nach außen erstrecken und wobei die zweiten Abschnitte der Querstege (70) sich nur über eine geringe Entfernung zu dem zweiten Trägerstreifen (66) erstrecken, so daß der zweite Trägerstreifen (66) dicht benachbart zu der zweiten Hauptseite des Gehäuses (40) liegt, wobei Filteraufnahmeöffnungen (48) in jedem der Gehäuse (40) geformt werden, so daß die mittleren Abschnitte der Querstege sich über die Öffnungen (48) erstrecken,
    - Abtrennen der mittleren Abschnitte, so daß sie Paare der zweiten und dritten Kontaktabschnitte (24, 30) bilden, und Abtrennen der ersten Abschnitte der Querstege (70) von dem ersten Trägerstreifen (62), so daß sie die ersten Kontaktteile (14) bilden,
    - Anordnen von Filtern (54) in den Filteraufnahmeöffnungen (48) in elektrischem Eingriff mit ausgewählten Paaren von zweiten und dritten Kontaktteilen (24,30), wobei sich die dritten Kontaktteile (30) zu den zweiten Abschnitten der Querstege (70) und damit zu dem zweiten Trägerstreifen (66) erstrecken,
    - und Abtrennen der so gebildeten elektrischen Komponente (10) und des Abschnitts des zweiten Trägerstreifens (66), der zu dieser Komponente gehört, von dem Rest des zweiten Trägerstreifens (66), so daß der abgetrennte Abschnitt des zweiten Trägerstreifens die gemeinsame Anschlußleitung (34) der Komponente (10) außerhalb des Gehäuses (40) der Komponente (10) bildet.
EP88900408A 1986-12-24 1987-11-27 Gefilterte elektrische vorrichtung und verfahren, um diese herzustellen Expired - Lifetime EP0294433B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US94647686A 1986-12-24 1986-12-24
US946476 1986-12-24

Publications (2)

Publication Number Publication Date
EP0294433A1 EP0294433A1 (de) 1988-12-14
EP0294433B1 true EP0294433B1 (de) 1993-03-10

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EP (1) EP0294433B1 (de)
JP (1) JP2585777B2 (de)
DE (1) DE3784711T2 (de)
WO (1) WO1988005218A1 (de)

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JP2585777B2 (ja) 1997-02-26
EP0294433A1 (de) 1988-12-14
WO1988005218A1 (en) 1988-07-14
DE3784711D1 (de) 1993-04-15
JPH01501983A (ja) 1989-07-06
DE3784711T2 (de) 1993-09-30

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