EP0662733A2 - Contact spring arrangement - Google Patents

Contact spring arrangement Download PDF

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Publication number
EP0662733A2
EP0662733A2 EP94120487A EP94120487A EP0662733A2 EP 0662733 A2 EP0662733 A2 EP 0662733A2 EP 94120487 A EP94120487 A EP 94120487A EP 94120487 A EP94120487 A EP 94120487A EP 0662733 A2 EP0662733 A2 EP 0662733A2
Authority
EP
European Patent Office
Prior art keywords
contact
spring arrangement
contact spring
arrangement according
recesses
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
EP94120487A
Other languages
German (de)
French (fr)
Other versions
EP0662733B1 (en
EP0662733A3 (en
Inventor
Jürgen Frommer
Erich Kreutter
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.)
ITT Cannon GmbH
Original Assignee
ITT Cannon GmbH
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 ITT Cannon GmbH filed Critical ITT Cannon GmbH
Publication of EP0662733A2 publication Critical patent/EP0662733A2/en
Publication of EP0662733A3 publication Critical patent/EP0662733A3/en
Application granted granted Critical
Publication of EP0662733B1 publication Critical patent/EP0662733B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H01R13/112—Resilient sockets forked sockets having two legs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending

Definitions

  • the invention relates to a contact spring arrangement, consisting of two oppositely arranged contact springs, each having a contact head which has a contact surface and two side surfaces such that the two contact surfaces are opposite one another.
  • a simple way of producing such contact spring arrangements is to punch them out of flat sheet metal.
  • the contact area is the area along which the stamped cut has been made.
  • This contact surface therefore has cutting grooves (cf. the cutting grooves 16 in FIG. 1). If a plug-in element is now inserted between two such contact springs and an electrical contact is thereby established, the cutting grooves act in the long run like a file. The plugs are worn out very quickly. In addition, the resulting electrical contact is not good. Furthermore, the width of the contact is limited by the thickness of the material from which the contact spring arrangement is punched out.
  • the US-PS 4,660,922 shows a press fit pin in which the contact area is cylindrical.
  • the contact head (head) serves to firmly anchor the pin, which is part of a connector strip, in a receiving part 46 (FIG. 5A).
  • This component has a convex surface and side surfaces. However, the problem of eliminating the scoring of a contact surface that arises during a die cut is not solved.
  • the DE-GM shows recesses made by punching. However, they do not serve to improve the contact area, but to anchor the pin in a mounting plate (see p. 5, line 10).
  • the object of the invention is to provide a contact spring arrangement of the type mentioned, in which the contact surface is improved.
  • the object is achieved in that at least one recess is stamped into each of the side surfaces and the contact surfaces are smoothed and widened by the material flow taking place during stamping.
  • the material of the contact surfaces flows - with the appropriate design of the embossing shape. This will widen the contact area and the striations that are still from the previous one
  • the punching process are smoothed. It can also form a convex surface transverse to the longitudinal direction of the contact spring, so that the contact surface takes on the shape of a spoon overall. In this way, the contact area is enlarged and qualitatively improved with simple means.
  • FIG. 1 shows a contact spring arrangement 20 with two contact springs 21 and 22.
  • This contact spring arrangement is inserted into a bore 23 in a plastic plate 24 (printed circuit board) and is provided with a contact pin 25 at its end protruding beyond the plastic plate 24.
  • This can be a so-called press-fit contact, ie a contact which has an elastically compressible region (not shown) with which it is held in the bore of another plastic plate (printed circuit board).
  • contact spring arrangements are in several bores 23, e.g. a field of 3 times 32 holes arranged in a connector field.
  • the contact springs 21, 22 each have contact heads 2, 2 '.
  • a pin (not shown) is now inserted from above (in FIG. 1) between the two contact heads 2, 2 ', specifically through the insertion opening 26.
  • FIG. 3 shows the blank 10 punched out of sheet metal of a contact spring with side faces 15 and a contact face 14.
  • the width b0 of a contact head 2 is equal to the thickness of the sheet from which the contact springs 21, 22 are punched out.
  • the punched blank as can be seen in FIG. 3, has cutting grooves 16 which result from the punching process which takes place in the S direction. This is how the contact springs look according to the state of the art in question here. If a plug element (not shown) is inserted between two contact springs 21, 22 with their contact surfaces 14, it can be seen that the grooves 16 act practically like a file on the contact surface of the plug element. In addition, the contact surface 14 provided with the cutting grooves 16 and created by the cutting process does not provide good electrical contact. Furthermore, the width is b0 Contact area limited to the thickness of the sheet from which the contact spring was punched out.
  • such a contact spring is now further processed in that, as can be seen in FIG.
  • the material displaced by this embossing process causes the contact surface 14 to flow.
  • the contact spring is smoothed in the embossing mold, so that the cutting grooves 16, which result from the previous punching process, largely disappear.
  • the contact surface 4 of the finished contact head 2 or 2 ' is created.
  • the contact surface also flows in width, of course only on the condition that the embossing shape is designed accordingly.
  • the contact surface 4 then has a width b 1 that is greater than the original width b 1 of the blank 10 not provided with the embossed recesses 7.
  • the recesses 7 can be embossed to such an extent that they merge, i.e. so that, as indicated by the dashed lines in Figure 7, a continuous recess 7 'is formed.
  • recesses 17 are embossed and designed in such a way that they are open to the surface 6 which lies opposite the contact surface 4.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Measuring Leads Or Probes (AREA)
  • Contacts (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Abstract

In an arrangement of two contact springs, there is at least one recess (7) stamped in the spring side faces (15) to form a pocket. The contact faces (4) are thereby expanded in size by the flow of material and at the same time, they are polished. The contact faces are also convex shaped in the transverse direction (a) to the axis so that the overall shape is that of a spoon. If there are two recesses, they run into each other so that the whole contact head is penetrated.

Description

Die Erfindung betrifft eine Kontaktfeder-Anordnung, bestehend aus zwei gegenüberliegend angeordneten Kontaktfedern, die je einen Kontaktkopf aufweisen, der eine Kontaktfläche und zwei Seitenflächen aufweist derart, daß die beiden Kontaktflächen einander gegenüberliegen.The invention relates to a contact spring arrangement, consisting of two oppositely arranged contact springs, each having a contact head which has a contact surface and two side surfaces such that the two contact surfaces are opposite one another.

Eine einfache Art der Herstellung derartiger Kontaktfeder-Anordnungen besteht darin, sie aus flachem Blech auszustanzen. Daraus folgt aber, daß die Kontaktfläche diejenige Fläche ist, entlang der der Stanzschnitt erfolgt ist. Diese Kontaktfläche weist daher Schneidriefen auf (vgl. die Schneidriefen 16 in Figur 1). Wird nun zwischen zwei derartige Kontaktfedern ein Steckelement eingesteckt und dadurch ein elektrischer Kontakt hergestellt, so wirken die Schneidriefen auf die Dauer wie eine Feile. Die Stecker werden also sehr schnell abgenützt. Außerdem ist der entstehende elektrische Kontakt nicht gut. Ferner ist die Breite des Kontaktes durch die Dicke des Materials, aus dem die Kontaktfeder-Anordnung ausgestanzt wird, beschränkt.A simple way of producing such contact spring arrangements is to punch them out of flat sheet metal. However, it follows that the contact area is the area along which the stamped cut has been made. This contact surface therefore has cutting grooves (cf. the cutting grooves 16 in FIG. 1). If a plug-in element is now inserted between two such contact springs and an electrical contact is thereby established, the cutting grooves act in the long run like a file. The plugs are worn out very quickly. In addition, the resulting electrical contact is not good. Furthermore, the width of the contact is limited by the thickness of the material from which the contact spring arrangement is punched out.

Die US-PS 4,660,922 zeigt einen Preßfit-Stift, bei dem der Kontaktbereich zylindrisch ist. Der Kontaktkopf (head) dient dazu, den Stift, der Teil einer Steckerleiste ist, fest in einem Aufnahmeteil 46 (Figur 5A) zu verankern. Zwar hat dieses Bauteil eine konvexe Fläche und Seitenflächen. Das Problem, die bei einem Stanzschnitt entstehenden Riefen einer Kontaktfläche zu beseitigen, ist dabei aber nicht gelöst.The US-PS 4,660,922 shows a press fit pin in which the contact area is cylindrical. The contact head (head) serves to firmly anchor the pin, which is part of a connector strip, in a receiving part 46 (FIG. 5A). This component has a convex surface and side surfaces. However, the problem of eliminating the scoring of a contact surface that arises during a die cut is not solved.

Das DE-GM zeigt durch Stanzen hergestellte Ausnehmungen. Sie dienen jedoch nicht zur Verbesserung der Kontaktfläche, sondern zur Verankerung des Stiftes in einer Halterungsscheibe (siehe S. 5, Z. 10).The DE-GM shows recesses made by punching. However, they do not serve to improve the contact area, but to anchor the pin in a mounting plate (see p. 5, line 10).

Aufgabe der Erfindung ist es, eine Kontaktfeder-Anordnung der eingangs genannten Art zu schaffen, bei der die Kontaktfläche verbessert ist.The object of the invention is to provide a contact spring arrangement of the type mentioned, in which the contact surface is improved.

Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß in die Seitenflächen je mindestens eine Ausnehmung eingeprägt ist und die Kontaktflächen durch den beim Prägen stattfindenden Materialfluß geglättet und verbreitert sind.The object is achieved in that at least one recess is stamped into each of the side surfaces and the contact surfaces are smoothed and widened by the material flow taking place during stamping.

Durch die Einprägung der Ausnehmung fließt - bei entsprechender Ausbildung der Prägeform - das Material der Kontaktflächen in die Breite. Dadurch wird die Kontaktfläche verbreitert und die Riefen, die noch von dem vorherigen Stanzvorgang herrühren, werden geglättet. Es kann sich dabei auch eine quer zur Längsrichtung der Kontaktfeder konvexe Fläche ausbilden, so daß die Kontaktfläche insgesamt die Form eines Löffels annimmt. Auf diese Weise wird mit einfachen Mitteln die Kontaktfläche vergrößert und qualitativ verbessert.By embossing the recess, the material of the contact surfaces flows - with the appropriate design of the embossing shape. This will widen the contact area and the striations that are still from the previous one The punching process are smoothed. It can also form a convex surface transverse to the longitudinal direction of the contact spring, so that the contact surface takes on the shape of a spoon overall. In this way, the contact area is enlarged and qualitatively improved with simple means.

Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen definiert, ebenso das Verfahren zur Herstellung derartiger Kontaktfedern.Advantageous developments of the invention are defined in the subclaims, as is the method for producing such contact springs.

Im folgenden werden Ausführungsbeispiele der Erfindung anhand der beigefügten Zeichnungen beschrieben. Es stellen dar:

Figur 1
eine Draufsicht auf ein erstes Ausführungsbeispiel einer Kontaktfederanordnung in der Bohrung einer Leiterplatte;
Figur 2
ein Schnitt entlang der Linie II-II in Figur 1;
Figur 3
ein Rohling einer Kontaktfeder nach dem Ausstanzen;
Figur 4
eine Kontaktfeder nach dem Prägevorgang;
Figur 5
eine Draufsicht auf die Kontaktfeder nach Figur 4 in Richtung der Pfeile V-V in Figur 2;
Figur 6
eine Seitenansicht in Richtung der Pfeile VI-VI in Figur 5;
Figur 7
ein Schnitt entlang der Linie VII-VII in Figur 6;
Figur 8
eine Seitenansicht, ähnlich Figur 6, eines zweiten Ausführungsbeispiels;
Figur 9
eine Draufsicht, ähnlich Figur 6, eines dritten Ausführungsbeispiels.
Exemplary embodiments of the invention are described below with reference to the accompanying drawings. They represent:
Figure 1
a plan view of a first embodiment of a contact spring arrangement in the bore of a circuit board;
Figure 2
a section along the line II-II in Figure 1;
Figure 3
a blank of a contact spring after punching out;
Figure 4
a contact spring after the embossing process;
Figure 5
a plan view of the contact spring of Figure 4 in the direction of arrows VV in Figure 2;
Figure 6
a side view in the direction of arrows VI-VI in Figure 5;
Figure 7
a section along the line VII-VII in Figure 6;
Figure 8
a side view, similar to Figure 6, of a second embodiment;
Figure 9
a plan view, similar to Figure 6, of a third embodiment.

Figur 1 zeigt eine Kontaktfederanordnung 20 mit zwei Kontaktfedern 21 und 22. Diese Kontaktfederanordnung ist in eine Bohrung 23 einer Kunststoffplatte 24 (Leiterplatte) eingesetzt und an ihrem über die Kunststoffplatte 24 hervorstehenden Ende mit einem Kontaktstift 25 versehen. Bei diesem kann es sich um einen sog. Pressfit-Kontakt handeln, d.h. um einen Kontakt, der einen (nicht gezeigten) elastisch zusammenpressbaren Bereich aufweist, mit dem er in der Bohrung einer weiteren Kunststoffplatte (Leiterplatte) gehalten wird.FIG. 1 shows a contact spring arrangement 20 with two contact springs 21 and 22. This contact spring arrangement is inserted into a bore 23 in a plastic plate 24 (printed circuit board) and is provided with a contact pin 25 at its end protruding beyond the plastic plate 24. This can be a so-called press-fit contact, ie a contact which has an elastically compressible region (not shown) with which it is held in the bore of another plastic plate (printed circuit board).

Mehrere derartige Kontaktfederanordnungen sind in mehreren Bohrungen 23, z.B. eines Feldes von 3 mal 32 Bohrungen eines Steckerfeldes angeordnet.Several such contact spring arrangements are in several bores 23, e.g. a field of 3 times 32 holes arranged in a connector field.

Die Kontaktfedern 21, 22 weisen jeweils Kontaktköpfe 2, 2' auf. Zur Herstellung eines Kontaktes wird nun ein Stift (nicht gezeigt) von oben (in Figur 1) zwischen die zwei Kontaktköpfe 2, 2' eingeschoben, und zwar durch die Einschiebeöffnung 26.The contact springs 21, 22 each have contact heads 2, 2 '. To establish a contact, a pin (not shown) is now inserted from above (in FIG. 1) between the two contact heads 2, 2 ', specifically through the insertion opening 26.

Figur 3 zeigt den aus Blech ausgestanzten Rohling 10 einer Kontaktfeder mit Seitenflächen 15 und einer Kontaktfläche 14. Die Breite b₀ eines Kontaktkopfes 2 ist dabei gleich der Dicke des Blechs, aus dem die Kontaktfedern 21, 22 ausgestanzt werden. Der ausgestanzte Rohling weist, wie aus Figur 3 ersichtlich, Schneidriefen 16 auf, die vom Stanzvorgang, der in Richtung S stattfindet, herrühren. So sehen die Kontaktfedern nach dem hier in Frage kommenden Stand der Technik aus. Wird nun zwischen zwei mit ihren Kontaktflächen 14 gegenüberliegende Kontaktfedern 21, 22 ein (nicht gezeigtes) Steckelement gesteckt, so ist ersichtlich, daß die Riefen 16 praktisch wie eine Feile an der Kontaktfläche des Steckelementes wirken. Außerdem ergibt die mit den Schneideriefen 16 versehene und durch den Schnittvorgang entstandene Kontaktfläche 14 keinen guten elektrischen Kontakt. Ferner ist die Breite b₀ der Kontaktfläche auf die Dicke des Blechs, aus dem die Kontaktfeder ausgestanzt wurde, begrenzt.FIG. 3 shows the blank 10 punched out of sheet metal of a contact spring with side faces 15 and a contact face 14. The width b₀ of a contact head 2 is equal to the thickness of the sheet from which the contact springs 21, 22 are punched out. The punched blank, as can be seen in FIG. 3, has cutting grooves 16 which result from the punching process which takes place in the S direction. This is how the contact springs look according to the state of the art in question here. If a plug element (not shown) is inserted between two contact springs 21, 22 with their contact surfaces 14, it can be seen that the grooves 16 act practically like a file on the contact surface of the plug element. In addition, the contact surface 14 provided with the cutting grooves 16 and created by the cutting process does not provide good electrical contact. Furthermore, the width is b₀ Contact area limited to the thickness of the sheet from which the contact spring was punched out.

Nach dem ersten Ausführungsbeispiel der Erfindung wird nun eine derartige Kontaktfeder dadurch weiter bearbeitet, daß, wie aus Figur 5 ersichtlich, in die beiden Seitenflächen 15 Ausnehmungen 7 in Prägerichtung P eingeprägt werden. Das durch diesen Einprägevorgang verdrängte Material bringt die Kontaktfläche 14 zum Fließen. Damit wird einerseits die Kontaktfeder in der Prägeform geglättet, so daß die Schneidriefen 16, die vom vorhergehenden Stanzvorgang her rühren, weitgehend verschwinden. Es entsteht die Kontaktfläche 4 des fertig bearbeiteten Kontaktkopfes 2 bzw. 2'. Andererseits fließt die Kontaktfläche auch in die Breite, selbstverständlich nur unter der Voraussetzung, daß die Prägeform entsprechend gestaltet ist. Die Kontaktfläche 4 hat dann eine Breite b₁, die größer als die ursprüngliche Breite b₀ des nicht mit den eingeprägten Ausnehmungen 7 versehenen Rohlings 10 ist. Gleichzeitig entsteht damit, ebenfalls wieder unter der Voraussetzung, daß die Prägeform entsprechend gestaltet ist, auch eine konvexe Form quer zur Längsrichtung A der Kontaktfeder (vgl. Figur 7). Dadurch entsteht die löffelförmige Kontaktfläche 4, geglättet durch den Prägevorgang, die auch einen guten elektrischen Kontakt herstellt.According to the first embodiment of the invention, such a contact spring is now further processed in that, as can be seen in FIG. The material displaced by this embossing process causes the contact surface 14 to flow. On the one hand, the contact spring is smoothed in the embossing mold, so that the cutting grooves 16, which result from the previous punching process, largely disappear. The contact surface 4 of the finished contact head 2 or 2 'is created. On the other hand, the contact surface also flows in width, of course only on the condition that the embossing shape is designed accordingly. The contact surface 4 then has a width b 1 that is greater than the original width b 1 of the blank 10 not provided with the embossed recesses 7. At the same time, this also results in a convex shape transversely to the longitudinal direction A of the contact spring, again provided that the embossing shape is designed accordingly (see FIG. 7). This creates the spoon-shaped contact surface 4, smoothed by the embossing process, which also makes good electrical contact.

Im Extremfall können die Ausnehmungen 7 soweit eingeprägt sein, daß sie ineinander übergehen, d.h. so daß, wie durch die gestrichelten Linien in Figur 7 angedeutet, eine durchgehende Ausnehmung 7' entsteht.In extreme cases, the recesses 7 can be embossed to such an extent that they merge, i.e. so that, as indicated by the dashed lines in Figure 7, a continuous recess 7 'is formed.

Beim zweiten Ausführungsbeispiel nach Figur 8 sind Ausnehmungen 17 so eingeprägt und ausgebildet, daß sie zur Fläche 6, die der Kontakfläche 4 gegenüberliegt, offen sind.In the second exemplary embodiment according to FIG. 8, recesses 17 are embossed and designed in such a way that they are open to the surface 6 which lies opposite the contact surface 4.

Beim dritten Ausführungsbeispiel nach Figur 9 ist nur eine Tasche 18 eingeprägt, und zwar in die Fläche 6.In the third exemplary embodiment according to FIG. 9, only one pocket 18 is stamped into the surface 6.

BezugszeichenlisteReference list

2, 2'2, 2 '
KontaktköpfeContact heads
44th
Kontaktfläche des Kontaktkopfes (2), fertig bearbeitetContact surface of the contact head (2), finished
66
Flächesurface
77
AusnehmungRecess
7'7 '
durchgehende Ausnehmungcontinuous recess
88th
Stegweb
1010th
Rohlingblank
1414
Kontaktfläche des Rohlings (mit Schneidriefen 16)Contact surface of the blank (with cutting grooves 16)
1515
SeitenflächenSide faces
1616
SchneidriefenCutting marks
1717th
AusnehmungRecess
1818th
Taschebag
SS
Stanzrichtung (für 10)Punching direction (for 10)
PP
Prägerichtung (für 7)Embossing direction (for 7)
b₀, b₁b₀, b₁
Breitewidth
2020th
KontaktfederanordnungContact spring arrangement
21, 2221, 22
KontaktfedernContact springs
2323
Bohrungdrilling
2424th
KunststoffplattePlastic plate
2525th
KontaktstiftContact pin
2626
EinschiebeöffnungInsertion opening

Claims (8)

Kontaktfeder-Anordnung, bestehend aus zwei gegenüberliegend angeordneten Kontaktfedern (21, 22), die je einen Kontaktkopf (2, 2') aufweisen, der eine Kontaktfläche (4) und zwei Seitenflächen (15) aufweist, derart daß und bei dem die beiden Kontaktflächen (4) einander gegenüberliegen, dadurch gekennzeichnet, daß in die Seitenflächen (15) je mindestens eine Ausnehmung (7) eingeprägt ist und die Kontaktflächen (4) durch den beim Prägen stattfindenden Materialfluß geglättet und verbreitert sind.Contact spring arrangement, consisting of two oppositely arranged contact springs (21, 22), each having a contact head (2, 2 '), which has a contact surface (4) and two side surfaces (15), such that and in which the two contact surfaces (4) opposite each other, characterized in that at least one recess (7) is embossed in each of the side surfaces (15) and the contact surfaces (4) are smoothed and widened by the material flow taking place during embossing. Kontaktfeder-Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß die Kontaktfläche (4) auch quer zur Längsrichtung (A) konvex geformt ist.Contact spring arrangement according to claim 1, characterized in that the contact surface (4) is also convexly shaped transversely to the longitudinal direction (A). Kontaktfeder-Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß Ausnehmungen (7) in die Seitenflächen (15) eingeprägt sind.Contact spring arrangement according to claim 1, characterized in that recesses (7) are embossed in the side surfaces (15). Kontaktfeder-Anordnung nach Anspruch 3, dadurch gekennzeichnet, daß die Ausnehmungen (17) zu der Fläche (6), die der Kontaktfläche (4) gegenüberliegt, hin offen sind.Contact spring arrangement according to Claim 3, characterized in that the recesses (17) are open towards the surface (6) which lies opposite the contact surface (4). Kontaktfeder-Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß die Ausnehmung in die Fläche (6), die der Kontaktfläche (4) gegenüberliegt, eingeprägt und als Tasche (18) ausgebildet ist.Contact spring arrangement according to Claim 1, characterized in that the recess is embossed into the surface (6) which lies opposite the contact surface (4) and is designed as a pocket (18). Kontaktfeder-Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß die Ausnehmungen (7), ausgehend von den beiden Seitenflächen (15), ineinander übergehen und den Querschnitt des Kontaktkopfes (2) durchsetzen.Contact spring arrangement according to claim 1, characterized in that the recesses (7), starting from the two side surfaces (15), merge into one another and penetrate the cross section of the contact head (2). Kontaktfeder-Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß der Kontaktkopf löffelförmig geprägt ist.Contact spring arrangement according to claim 1, characterized in that the contact head is shaped like a spoon. Verfahren zur Herstellung einer Kontaktfeder, dadurch gekennzeichnet, daß ein Rohling (10) mit konvexer Kontaktfläche (14) aus einem Blechstreifen ausgestanzt wird und daß in die quer zur Stanzrichtung (S) des Stanzvorganges liegenden Seitenflächen (15) Ausnehmungen (7) eingeprägt und durch das Fließen des Materials in der Prägeform die Kontaktfläche verbreitert, geglättet und geformt wird.A method for producing a contact spring, characterized in that a blank (10) with a convex contact surface (14) is punched out of a sheet metal strip and that recesses (7) are embossed into and through the side surfaces (15) transverse to the punching direction (S) of the punching process the flow of the material in the embossing mold widens, smoothes and shapes the contact surface.
EP94120487A 1994-01-11 1994-12-23 Contact spring arrangement Expired - Lifetime EP0662733B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4400499A DE4400499C2 (en) 1994-01-11 1994-01-11 Contact spring arrangement
DE4400499 1994-01-11

Publications (3)

Publication Number Publication Date
EP0662733A2 true EP0662733A2 (en) 1995-07-12
EP0662733A3 EP0662733A3 (en) 1996-07-03
EP0662733B1 EP0662733B1 (en) 1998-10-21

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EP94120487A Expired - Lifetime EP0662733B1 (en) 1994-01-11 1994-12-23 Contact spring arrangement

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US (1) US5599213A (en)
EP (1) EP0662733B1 (en)
DE (2) DE4400499C2 (en)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
EP0777306A1 (en) * 1995-12-01 1997-06-04 Berg Electronics Manufacturing B.V. Smooth contact terminals, method to manufacture such terminals and products comprising such terminals
US9772147B2 (en) 2011-12-16 2017-09-26 Ge Oil & Gas Uk Limited Heat sink mounting apparatus and method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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US6471523B1 (en) * 2000-02-23 2002-10-29 Berg Technology, Inc. Electrical power connector
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Also Published As

Publication number Publication date
DE4400499C2 (en) 1996-05-02
US5599213A (en) 1997-02-04
EP0662733B1 (en) 1998-10-21
EP0662733A3 (en) 1996-07-03
DE4400499A1 (en) 1995-07-20
DE59407130D1 (en) 1998-11-26

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