EP0093424B1 - Method of manufacture of a contact element - Google Patents

Method of manufacture of a contact element Download PDF

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Publication number
EP0093424B1
EP0093424B1 EP83104208A EP83104208A EP0093424B1 EP 0093424 B1 EP0093424 B1 EP 0093424B1 EP 83104208 A EP83104208 A EP 83104208A EP 83104208 A EP83104208 A EP 83104208A EP 0093424 B1 EP0093424 B1 EP 0093424B1
Authority
EP
European Patent Office
Prior art keywords
contact
openings
contacts
core
sides
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
Application number
EP83104208A
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German (de)
French (fr)
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EP0093424A3 (en
EP0093424A2 (en
Inventor
Herbert Bauer
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.)
Inovan GmbH and Co KG Metalle und Bauelemente
Original Assignee
Inovan GmbH and Co KG Metalle und Bauelemente
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 Inovan GmbH and Co KG Metalle und Bauelemente filed Critical Inovan GmbH and Co KG Metalle und Bauelemente
Priority to AT83104208T priority Critical patent/ATE46790T1/en
Publication of EP0093424A2 publication Critical patent/EP0093424A2/en
Publication of EP0093424A3 publication Critical patent/EP0093424A3/en
Application granted granted Critical
Publication of EP0093424B1 publication Critical patent/EP0093424B1/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/041—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion
    • H01H11/042—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion by mechanical deformation

Definitions

  • the invention relates to a method for producing a contact element, consisting of a contact plate with punctually inserted contacts with one-sided or two-sided contact surface, the contacts consisting of a contact core which is coated on one or both sides with contact material.
  • the contacts are riveted into the contact plate, the contacts being both flush with the contact plate and projecting beyond the plane of the contact plate.
  • the riveting process not only results in a firm mechanical fit of the contact rivet in the contact plate, but also a lower contact resistance between the contact plate and the contact.
  • the riveting process is also suitable for producing such contact elements in automated operation.
  • the riveting of the contacts and the necessary deformation of the contact material have a disadvantage in particular when no solid contact material is used, but only contact rivets whose contact surface is only coated with contact material. Due to the deformation during riveting, this contact layer can tear or at least deform so that the necessary thickness of the contact layer no longer remains on the contact surface. This risk exists particularly in the case of contact rivets with contact surfaces on both sides (changeover contacts).
  • the production of the contact rivets in particular the bimetal or the trimetal rivets, is relatively expensive.
  • the object of the invention is to provide a method for producing a contact element of the type mentioned at the outset according to EP-A-0 037 154, which can be produced in automated operation, the contacts of which are undeformed and yet mechanically secure in the contact plate with a low contact resistance and finally, its production also causes the lowest possible costs.
  • the contact plate is provided with openings corresponding to the cross-sectional dimensions of the contact core, the openings being designed such that rod-shaped strips protruding into the openings remain and that the contact core is pressed into the openings while pushing the strips away the opening is chamfered on one or both sides and / or the contact core is chamfered at its introducer.
  • the contact core is cold-welded to the contact plate, which not only ensures a tight fit of the contact in the contact plate, but also an extremely low contact resistance between the material of the contact plate and that of the contact core.
  • the making of the contacts is extremely simple; they are simply punched out as contact pins or plates from a corresponding material.
  • the openings in the contact plate can also be easily produced in the stamping process, the openings being simultaneously chamfered on one or both sides in order to enable the contact material to be pressed into this chamfer.
  • the contact core is also slightly chamfered at its introducer, on the one hand to facilitate the insertion of the contact core into the openings and on the other hand also to avoid the strips protruding into the openings being sheared off instead of being pushed away.
  • a contact strip (contact plate) 1 is provided with an opening 2 into which ribs 3 protrude.
  • the opening 2 is slightly chamfered on both sides 4.
  • Contacts 5 in this case bimetallic contacts with a round contact core, are now pressed into these openings 2, the ribs projecting into the opening 2 being deformed.
  • the openings 2 and the pressing in of the contacts 5 can be carried out immediately one after the other, so that additional cleaning of the surfaces to be cold-welded between the material of the contact plate 1 and that of the contact 5 is not necessary. This is not necessary in particular if the contacts 5 are also punched out of a contact material strip immediately beforehand.
  • Fig. 4 shows two contacts with one-sided contact surface 6, inserted in openings 2 according to Figs. 1 and 2.
  • the contact shown on the left is beyond the level of the contact plate; the contact shown on the right is flush with the level of the contact plate 1.
  • By upsetting the contacts 5 it is achieved that the chamfered part of the opening 2 is filled or it is achieved in that the contact 5 always assumes the correct position in the contact plate 1.
  • FIG. 5 again shows, like FIG. 4, two contacts 5 inserted into the openings 2, but which have contact surfaces 6 on both sides.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Switches (AREA)

Abstract

1. A process for the production of a contact element comprising a contact plate (1) with contacts (5) which are inserted therein in a punctiform fashion and which have a contact surface at one or both sides, wherein the contacts comprise a contact core which is coated with contact material on one or both sides, characterised in that the contact plate (1) is provided with openings (2) therethrough, which correspond to the cross-sectional dimensions of the contact core and at the inside walls of which remain ribs which extend in the longitudinal direction of the through openings (2) and which project into the interior of the through openings (2), and that the contact core is pressed into the through openings (2), with the ribs undergoing deformation causing cold welding, wherein the through opening is chamferred at one or both sides and/or the contact core is chamferred at its insertion end.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung eines Kontaktelementes, bestehend aus einer Kontaktplatte mit punktförmig darin eingefügten Kontakten mit einseitiger oder beidseitiger Kontaktfläche, wobei die Kontakte aus einem Kontaktkern bestehen, der ein- oder beidseitig mit Kontaktmaterial beschichtet ist.The invention relates to a method for producing a contact element, consisting of a contact plate with punctually inserted contacts with one-sided or two-sided contact surface, the contacts consisting of a contact core which is coated on one or both sides with contact material.

Bei bekannten derartigen Kontaktelementen werden die Kontakte in die Kontaktplatte eingenietet, wobei die Kontakte sowohl bündig mit der Kontaktplatte abschließen, wie auch über die Ebene der Kontaktplatte herausstehen können. Durch das Nietverfahren ergibt sich nicht nur ein fester mechanischer Sitz der Kontaktniete in der Kontaktplatte, sondern auch ein geringern Übergangswiderstand zwischen Kontaktplatte und Kontakt. Auch eignet sich das Nietverfahren zur Herstellung derartiger Kontaktelemente im automatisierten Betrieb. Nachteilig wirkt sich die Vernietung der Kontakte und die dabei notwendige Verformung des Kontaktmaterials insbesondere dann aus, wenn kein Kontakt-Vollmaterial verwendet wird, sondern nur Kontaktnieten, deren Kontaktfläche lediglich mit Kontaktmaterial beschichtet ist. Durch die Verformung beim Nieten kann diese Kontaktschicht einreißen oder sich doch zumindest so verformen, daß nicht mehr die notwendige Dicke der Kontaktschicht auf der Kontaktfläche verbleibt. Diese Gefahr besteht insbesondere bei Kontaktnieten mit beidseitigen Kontaktflächen (Umschaltkontakte). Schließlich ist auch noch festzuhalten, daß die Herstellung der Kontaktnieten, insbesondere der Bimetall- beziehungsweise der Trimetall-Nieten, verhältnismäßig kostenaufwendig ist.In known contact elements of this type, the contacts are riveted into the contact plate, the contacts being both flush with the contact plate and projecting beyond the plane of the contact plate. The riveting process not only results in a firm mechanical fit of the contact rivet in the contact plate, but also a lower contact resistance between the contact plate and the contact. The riveting process is also suitable for producing such contact elements in automated operation. The riveting of the contacts and the necessary deformation of the contact material have a disadvantage in particular when no solid contact material is used, but only contact rivets whose contact surface is only coated with contact material. Due to the deformation during riveting, this contact layer can tear or at least deform so that the necessary thickness of the contact layer no longer remains on the contact surface. This risk exists particularly in the case of contact rivets with contact surfaces on both sides (changeover contacts). Finally, it should also be noted that the production of the contact rivets, in particular the bimetal or the trimetal rivets, is relatively expensive.

Die kostenaufwendige Herstellung solcher Bimetall- oder Trimetall-Nieten wird nach einem bekannten Vorschlag, nach der EP-A-0 037 154 dadurch vermieden, daß aus einer Kontaktplatte runde Löcher ausgestanzt werden, in die anschließend entsprechende Kontaktplättchen eingesetzt werden können. Damit wird nicht nur die aufwendige Herstellung der Nieten vermieden, sondern auch erreicht, daß derartige Kontaktelemente im automatischen Betrieb gefertigt werden können. Als Nachteil ist noch anzusehen, daß derartige Kontaktplättchen in die Kontaktplatte eingelötet werden müssen. Zwar ist auch die Möglichkeit gegeben, die Kontaktplättchen in der Kontaktplatte kalt zu verschweißen, jedoch erfordert dies einen sehr hohen Druck auf Kontaktplättchen, um durch die damit bewirkte Materialverdrängung eine sichere Kaltverschweißung zu erreichen. Dieser hohe Druck auf die Kontaktplättchen selbstverständlich kann bei Bimetall- oder Trimetall-Kontakten zu dem gleichen, bereis oben beschriebenen Effekt, nämlich zu einer Zerstörung der nur eine sehr geringe Dicke aufweisenden Kontaktschicht führen.The costly production of such bimetal or trimetal rivets is avoided according to a known proposal, according to EP-A-0 037 154, in that round holes are punched out of a contact plate, into which corresponding contact plates can subsequently be inserted. This not only avoids the complex production of the rivets, but also ensures that such contact elements can be manufactured in automatic operation. Another disadvantage is that such contact plates must be soldered into the contact plate. There is also the possibility of cold welding the contact plates in the contact plate, but this requires a very high pressure on the contact plates in order to achieve safe cold welding by the displacement of the material caused thereby. This high pressure on the contact platelets can of course lead to the same effect already described above, namely to destruction of the contact layer, which has only a very small thickness, in the case of bimetallic or trimetallic contacts.

Gleiches ist zu berichten von einem ebenfalls bekanntgewordenen Verfahren, das in der CH-A-574 669 beschrieben ist. Hier sind in einer Sackbohrung radial verlaufende Rillen vorgesehen, in die das Material einer eingeführten Kontaktniet durch sehr hohen Druck hineinfließen soll. Die sehr dünnen Kontaktschichten bei Bimetall- oder Trimetall-Kontakten werden durch diesen hohen Druck mit Sicherheit zerstört. Auch trifft dies zu für ein weiter bekanntes Verfahren nach der US-A-3 341 943, wo ebenfalls ein Kaltverschweißen derartiger Kontaktnieten durch hohen Druck gelehrt wird.The same is to be reported of a method which has also become known and is described in CH-A-574 669. Radially extending grooves are provided in a blind bore, into which the material of an inserted contact rivet is to flow due to very high pressure. The very thin contact layers in bimetallic or tri-metal contacts are certainly destroyed by this high pressure. This also applies to a further known method according to US-A-3,341,943, where cold welding of such contact rivets by high pressure is also taught.

Schlieslich ist aus der GB-A-760 231 auch noch bei der Herstellung von Kupfer/Aluminium-Verbindungen bekannt, eine Kaltverschweißung herbeizuführen, daß entweder der Schaft einer Kontaktniet oder die Bohrung in die die Kontaktniet einzusetzen ist, oder auch beide Teile mit einer Riffelung versehen werden, die beim Eindrücken des Nietschaftes weggedrückt werden, wodurch zumindest teilweise eine Kaltschweißverbindung hervorgerufen wird. Wie ausdrücklich in den Unterlagen der GB-A-760 231 angeführt wird, muß diese Verbindung jedoch luftdicht abgeschlossen sein, um das Eindringen von Dämpfen etc., die Korrosion hervorrufen könnten, zu vermeiden. Mit anderen Worten, die Kaltschweißverbindung besteht nur teilweise oder ist auch so unzuverlässig, daß auf diese Abdichtung nicht verzichtet werden kann. Auch hier muß selbstverständlich zum Eindrücken des Nietschaftes beziehungsweise eines anderen ähnlich geformten Elements, Druck aufgewandt werden, jedoch keinesfalls in der Höhe wie bei den oben beschriebenen Vorschlägen. Die Lehre nach der GB-A-760 231 bezieht sich allerdings lediglich auf Verbinder beziehungsweise Verbindungen im Hochspannungsbereich, also nicht in dem Bereich, in dem Kontakte mit dünnen Kontaktschichten verwendet werden.Finally, from GB-A-760 231 it is also known, in the production of copper / aluminum connections, to bring about a cold welding that either the shaft of a contact rivet or the bore into which the contact rivet is to be inserted, or both parts with corrugation are provided, which are pushed away when the rivet shaft is pressed in, as a result of which a cold-welded connection is at least partially produced. However, as expressly stated in the documents of GB-A-760 231, this connection must be hermetically sealed in order to avoid the penetration of vapors etc. which could cause corrosion. In other words, the cold weld connection is only partially or is so unreliable that this seal can not be dispensed with. Here, too, pressure must of course be used to press in the rivet shank or another similarly shaped element, but in no way in the height as in the proposals described above. However, the teaching according to GB-A-760 231 relates only to connectors or connections in the high-voltage range, that is to say not in the area in which contacts with thin contact layers are used.

Aufgabe der Erfindung ist es, ein Verfahren zur Herstellung eines Kontaktelements der eingangs genannten Art nach der EP-A-0 037 154 anzugeben, das im automatisierten Betrieb hergestellt werden kann, dessen Kontakte unverformt und dennoch mechanisch sicher in der Kontaktplatte mit niederem Übergangswiderstand gehalten sind und dessen Fertigung schließlich auch noch möglichst geringe Kosten verursacht.The object of the invention is to provide a method for producing a contact element of the type mentioned at the outset according to EP-A-0 037 154, which can be produced in automated operation, the contacts of which are undeformed and yet mechanically secure in the contact plate with a low contact resistance and finally, its production also causes the lowest possible costs.

Nach der Erfindung wird diese Aufgabe dadurch gelöst, daß die Kontaktplatte mit den Querschnittsabmessungen des Kontaktkerns entsprechenden Durchbrechungen versehen wird, wobei die Durchbrechungen so ausgeführt werden, daß in die Durchbrechungen hineinragende, stabförmige Leisten verbleiben und daß der Kontaktkern in die Durchbrechungen unter Wegdrücken der Leisten eingepreßt wird, wobei der Durchbruch ein- oder beidseitig und/oder der Kontaktkern an seinem Einführende angefast ist. Bei diesem Einpressen und dem dabei erfolgenden Wegdrücken der Leisten findet eine Kaltverschweißung des Kontaktkerns mit der Kontaktplatte statt, wodurch nicht nur ein fester Sitz des Kontakts in der Kontaktplatte gewährleistet ist, sondern auch ein äußerst geringer Übergangswiderstand zwischen dem Material der Kontaktplatte und demjenigen des Kontaktkerns. Zusätzlich kann dieser feste Sitz noch dadurch verbessert werden, daß der Kontakt nach dem Einpressen gestaucht wird, gegebenenfalls gleichzeitig mit einer gewünschten oberflächigen Verformung des Kontaktes. Selbstverständlich können nach diesem Verfahren hergestellte Kontaktplatten auch wiederum mit Kontakten bestückt sein, die bündig mit der Kontaktplatte abschließen oder über dessen Ebene herausragen, wiederum mit einseitigen oder beidseitigen Kontaktflächen.According to the invention, this object is achieved in that the contact plate is provided with openings corresponding to the cross-sectional dimensions of the contact core, the openings being designed such that rod-shaped strips protruding into the openings remain and that the contact core is pressed into the openings while pushing the strips away the opening is chamfered on one or both sides and / or the contact core is chamfered at its introducer. During this pressing in and the resulting pushing away of the strips, the contact core is cold-welded to the contact plate, which not only ensures a tight fit of the contact in the contact plate, but also an extremely low contact resistance between the material of the contact plate and that of the contact core. In addition, this can be fixed Seat can still be improved in that the contact is compressed after pressing in, if necessary simultaneously with a desired surface deformation of the contact. Of course, contact plates produced according to this method can in turn also be equipped with contacts that are flush with the contact plate or protrude above its level, again with one-sided or both-sided contact surfaces.

Die Herstellung der Kontakte ist äußerst einfach; sie werden lediglich als Kontaktstifte oder -platten aus einem entsprechenden Material herausgestanzt. Auch die Herstellung der Durchbrüche in der Kontaktplatte kann unschwer im Stanzverfahren erfolgen, wobei auch gleichzeitig die Durchbrüche ein- oder beidseitig angefast werden können, um ein Andrücken des Kontaktmaterials in diese Fase zu ermöglichen.The making of the contacts is extremely simple; they are simply punched out as contact pins or plates from a corresponding material. The openings in the contact plate can also be easily produced in the stamping process, the openings being simultaneously chamfered on one or both sides in order to enable the contact material to be pressed into this chamfer.

Zweckmäßigerweise wird der Kontaktkern an seinem Einführende auch leicht angefast, um einerseits das Einführen des Kontaktkerns in die Durchbrüche zu erleichtern und zum anderen auch zu vermeiden, daß die in die Durchbrüche hineinragenden Leisten statt weggedrückt abgeschert werden.Appropriately, the contact core is also slightly chamfered at its introducer, on the one hand to facilitate the insertion of the contact core into the openings and on the other hand also to avoid the strips protruding into the openings being sheared off instead of being pushed away.

Auf der Zeichnung ist schematisch das Einfügen von Kontakten in eine Kontaktplatte, in diesem Falle in ein Kontaktband, dargestellt. Hierbei zeigen:

  • Fig. 1 ein Kontaktband bei einer Durchbruchstelle in der Draufsicht,
  • Fig. 2 das Kontaktband nach Fig. 1 im Längsschnitt,
  • Fig. 3 zwei in einem Kontaktband eingesetzte Kontakte in Draufsicht,
  • Fig. 4 einen Längsschnitt nach Fig. 3 mit einseitigen Kontakten und
  • Fig. 5 den gleichen Längsschnitt wie Fig. 4, jedoch mit Kontakten mit beidseitigen Kontaktflächen.
The drawing schematically shows the insertion of contacts into a contact plate, in this case into a contact strip. Here show:
  • 1 is a contact tape at a breakthrough in plan view,
  • 2 shows the contact strip according to FIG. 1 in longitudinal section,
  • 3 is a top view of two contacts inserted in a contact band,
  • Fig. 4 shows a longitudinal section according to Fig. 3 with one-sided contacts and
  • Fig. 5 shows the same longitudinal section as Fig. 4, but with contacts with contact surfaces on both sides.

Ein Kontaktband (Kontaktplatte) 1 ist mit einer Durchbrechung 2 versehen, in die Rippen 3 hineinragen. Beidseitig ist die Durchbrechung 2 geringfügig angefast 4.A contact strip (contact plate) 1 is provided with an opening 2 into which ribs 3 protrude. The opening 2 is slightly chamfered on both sides 4.

In diese Durchbrüche 2 werden nunmehr Kontakte 5, in diesem Falle Bimetall-Kontakte mit rundem Kontaktkern, eingepreßt, wobei die in den Durchbruch 2 hineinragenden Rippen verformt werden. Das Herstellen der Durchbrüche 2 und das Einpressen der Kontakte 5 kann unmittelbar nacheinander erfolgen, so daß eine zusätzliche Reinigung der kalt miteinander zu verschweißenden Flächen zwischen dem Material der Kontaktplatte 1 und demjenigen des Kontaktes 5 nicht erforderlich ist. Dies ist insbesondere dann nicht notwendig, wenn auch die Kontakte 5 unmittelbar zuvor aus einem Kontaktmaterialband herausgestanzt werden.Contacts 5, in this case bimetallic contacts with a round contact core, are now pressed into these openings 2, the ribs projecting into the opening 2 being deformed. The openings 2 and the pressing in of the contacts 5 can be carried out immediately one after the other, so that additional cleaning of the surfaces to be cold-welded between the material of the contact plate 1 and that of the contact 5 is not necessary. This is not necessary in particular if the contacts 5 are also punched out of a contact material strip immediately beforehand.

Fig. 4 zeigt zwei Kontakte mit einseitiger Kontaktfläche 6, eingesetzt in Durchbrüche 2 nach den Fig. 1 und 2. Der links dargestellte Kontakt steht über die Ebene der Kontaktplatte hinaus; der rechts dargestellte Kontakt schließt bündig mit der Ebene der Kontaktplatte 1 ab. Durch Stauchen der Kontakte 5 wird erreicht, daß auch der angefaste Teil des Durchbruches 2 ausgefüllt wird beziehungsweise es wird dadurch erreicht, daß der Kontakt 5 stets die richtige Lage in der Kontaktplatte 1 einnimmt. Fig. 5 zeigt wiederum wie Fig. 4 zwei in die Durchbrechungen 2 eingefügte Kontakte 5, die jedoch beidseitig Kontaktflächen 6 aufweisen.Fig. 4 shows two contacts with one-sided contact surface 6, inserted in openings 2 according to Figs. 1 and 2. The contact shown on the left is beyond the level of the contact plate; the contact shown on the right is flush with the level of the contact plate 1. By upsetting the contacts 5 it is achieved that the chamfered part of the opening 2 is filled or it is achieved in that the contact 5 always assumes the correct position in the contact plate 1. FIG. 5 again shows, like FIG. 4, two contacts 5 inserted into the openings 2, but which have contact surfaces 6 on both sides.

Claims (4)

1. A process for the production of a contact element comprising a contact plate (1) with contacts (5) which are inserted therein in a punctiform fashion and which have a contact surface at one or both sides, wherein the contacts comprise a contact core which is coated with contact material on one or both sides, characterised in that the contact plate (1) is provided with openings (2) therethrough, which correspond to the cross-sectional dimensions of the contact core and at the inside walls of which remain ribs which extend in the longitudinal direction of the through openings (2) and which project into the interior of the through openings (2), and that the contact core is pressed into the through openings (2), with the ribs undergoing deformation causing cold welding, wherein the through opening is chamferred at one or both sides and/or the contact core is chamferred at its insertion end.
2. A process according to claim 1 characterised in that the contact (5) is upset after the operation of pressing it into the opening.
3. A process according to claim 1 or claim 2 characterised in that the opening (2) is chamferred (4) at one or both sides.
4. A process according to claim 1 characterised in that the contact core is at its insertion end.
EP83104208A 1982-04-30 1983-04-29 Method of manufacture of a contact element Expired EP0093424B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83104208T ATE46790T1 (en) 1982-04-30 1983-04-29 PROCESS FOR MANUFACTURING A CONTACT ELEMENT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823216135 DE3216135A1 (en) 1982-04-30 1982-04-30 CONTACT ELEMENT AND METHOD FOR THE PRODUCTION THEREOF
DE3216135 1982-04-30

Publications (3)

Publication Number Publication Date
EP0093424A2 EP0093424A2 (en) 1983-11-09
EP0093424A3 EP0093424A3 (en) 1986-12-03
EP0093424B1 true EP0093424B1 (en) 1989-09-27

Family

ID=6162350

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83104208A Expired EP0093424B1 (en) 1982-04-30 1983-04-29 Method of manufacture of a contact element

Country Status (3)

Country Link
EP (1) EP0093424B1 (en)
AT (1) ATE46790T1 (en)
DE (2) DE3216135A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10161317A1 (en) * 2001-12-13 2003-07-03 Matsushita Electric Works Europe Ag Relay contact element and method of manufacturing the same

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB760231A (en) * 1953-08-26 1956-10-31 Peppers Of Woking Ltd Improvements relating to electrical connectors
US3341943A (en) * 1962-10-31 1967-09-19 Talon Inc Method of making electrical contact elements
FR1448780A (en) * 1964-11-27 1966-03-18 Bernier & Cie Ets Method of placing contacts and contacts thus obtained
CH574669A5 (en) * 1973-11-28 1976-04-15 Kaludjerovic Ilija Electrical contact element with support section - has shaft extension fitting into fixing hole with changeable cross section
US4025143A (en) * 1975-06-10 1977-05-24 Rozmus John J Electrical contacts
JPS54150678A (en) * 1978-05-19 1979-11-27 Tetsuo Takano Square electric contact
BR8101754A (en) * 1980-03-27 1981-09-29 Du Pont PROCESS FOR THE PRODUCTION OF ELECTRICAL TERMINALS CONTAINING A THIN GOLD LAYER IN THE CONTACT AREA

Also Published As

Publication number Publication date
ATE46790T1 (en) 1989-10-15
EP0093424A3 (en) 1986-12-03
DE3380650D1 (en) 1989-11-02
EP0093424A2 (en) 1983-11-09
DE3216135A1 (en) 1983-11-03

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