EP0471971B1 - Pin-socket unit - Google Patents

Pin-socket unit Download PDF

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Publication number
EP0471971B1
EP0471971B1 EP91111512A EP91111512A EP0471971B1 EP 0471971 B1 EP0471971 B1 EP 0471971B1 EP 91111512 A EP91111512 A EP 91111512A EP 91111512 A EP91111512 A EP 91111512A EP 0471971 B1 EP0471971 B1 EP 0471971B1
Authority
EP
European Patent Office
Prior art keywords
pin
contact
clamping
contact pin
carrier part
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 - Lifetime
Application number
EP91111512A
Other languages
German (de)
French (fr)
Other versions
EP0471971A1 (en
Inventor
Walter Prochaska
Paul-Rainer Molitor
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.)
Otto Dunkel GmbH
Original Assignee
Otto Dunkel 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 Otto Dunkel GmbH filed Critical Otto Dunkel GmbH
Publication of EP0471971A1 publication Critical patent/EP0471971A1/en
Application granted granted Critical
Publication of EP0471971B1 publication Critical patent/EP0471971B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
    • H01R13/187—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with spring member in the socket
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
    • H01R12/58—Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes
    • H01R12/585—Terminals having a press fit or a compliant portion and a shank passing through a hole in the printed circuit board
    • 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
    • H01R13/111—Resilient sockets co-operating with pins having a circular transverse section

Definitions

  • the invention relates to a contact pin-contact spring socket assembly, in which the contact pin has two approximately parallel, a slot formed by punching oblong, mutually resilient, serving for pressing into an opening in a circuit board, one of which serves to limit the insertion path shoulder one Carrier part is assigned, and in which the contact spring bushing comprises a plurality of contact springs, which extend approximately from the region of the shoulder of the carrier part at a distance from the socket axis to the region of the front pin insertion opening and have the smallest distance from the socket axis in their central region .
  • the contact pin is as with the carrier part that serves to limit the insertion path Has shoulder, one-piece component formed. This is first produced as a turned part, which comprises the shoulder and a contact pin section protruding therefrom, from which the elongated hole is punched out after the material that is superfluous on both sides has been milled and thus converted into a flat shape in a subsequent punching process.
  • contact pin contact spring socket assemblies can be produced in a much simpler way than before in perfect quality if the contact pin is designed according to the invention as a stamped part which is independent of the carrier part which has the shoulder serving to limit the insertion path and can be connected to the shoulder via a clamping connection element.
  • the carrier part is expediently provided with a clamping bore which is open on the side facing away from the contact spring bushing and into which the contact pin with its rear pin end can be inserted to produce a clamp connection.
  • the rear pin end of the contact pin has a rectangular, preferably square cross-section and the distance between the diametrically opposite pin edges is matched to the diameter of the clamping bore.
  • the pin end has two approximately parallel, resilient, resilient locking legs which can be inserted into the locking hole and which are analogous to the contact pin and delimit a punched slot.
  • the flat-shaped contact pin 3 facing away from the plug insertion end is provided with two approximately parallel legs 5 that are resilient to one another and that delimit an elongated hole 4 formed by punching out. These legs 5 end in a pin end 6, which is provided in a central clamping bore 7 in a carrier part 8 with a shoulder 8 of the contact spring bushing 2 serving to limit the insertion path.
  • the illustrated Embodiment the contact springs 9 inserted into the socket interior with their rear end on a cylindrical ring extension 10 which protrudes from the shoulder and has an annular groove 11 on its foot.
  • the flanged edge of the socket body 12 of the contact spring socket 2 which is designed in the form of a thin-walled deformable sleeve, engages in this annular groove 11. The edge presses under contact with the shoulder on the shoulder between the contact springs 9 located between it and the ring shoulder 10.
  • annular body 14 lies against the flange, the inside diameter of which is selected to be somewhat smaller than the pin insertion opening 13 provided in the socket body 12.
  • the contact springs 9 distributed on the inner circumference, which are fixed in the region of the shoulder, are freely movable with their free ends in an annular gap 15 delimited between the socket body 12 and the annular body 14.
  • the radially inward curvature of the contact springs 9 illustrated in FIG. 5 is achieved in that the socket body 12 from the outside at two points axially offset with respect to the ring body 14 or the ring extension 10 each with a radially inward distance projecting annular bead 16 or 17 is provided, which abuts the contact springs 9 and elastically deforms them radially inwards.
  • the socket body 12 is provided in the region of each annular bead 16 or 17 with an inner diameter which is smaller than the outer diameter of the annular body 14 supporting the free ends of the contact springs 6, increased by twice the diameter of the contact springs 9.
  • FIG. 5 In the case of the contact socket / contact pin assembly 1, which is shown in simplified form in FIG. 1, the embodiment according to FIG. 5 is illustrated in more detail an additional radial indentation 18 is provided in order to press the contact springs (not shown) inside the contact spring bushing 2 firmly against the ring extension 10, which is also not shown.
  • Fig. 2 illustrates the simplest form of the formation of the rear pin end 6 of the contact pin 3.
  • the pin end 6 has a rectangular, preferably square cross section, and the distance between the diametrically opposite pin edges is matched to the diameter of the clamping bore 7. Due to the slight oversizing of the pin edge diagonal distance, the pin edges engage when connecting the contact pin 3 via the pin end 6 into the wall of the clamping bore 7 of the contact spring bushing 2. This ensures a firm hold and also a perfect contact.
  • FIG. 3 shows an improved cross-sectional shape of the pin end 6.
  • two opposite sides of the pin end 6 are provided with an approximately axially parallel bulge 19 directed towards the pin axis.
  • the outer edge regions of the pin end 6 are each elastically deformable toward the axis of curvature of the curvature 19 during the insertion process.
  • the pin end 6 is provided, analogously to the actual contact pin 3, with a punched-out portion, by means of which two clamping limbs 21 delimiting a clamping elongated hole 20 are formed, which spring towards one another when inserted into the clamping bore 7.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Multi-Conductor Connections (AREA)
  • Connecting Device With Holders (AREA)

Abstract

An electrical contact unit of the type inserted into electrical circuit boards has a pin (3) shaped to provide a spring fit in a contact hole. The end of the pin engages (6) an insulated stem (8) that expands into a section providing a contact region for externally inserted plugs. - The contact is in the form of a sleeve (9) with parallel strips constrained into a bowed form. A housing retains (2) the bush in position.

Description

Die Erfindung bezieht sich auf eine Kontaktstift-Kontaktfederbuchsen-Baueinheit, bei der der Kontaktstift zwei etwa parallele, ein durch Ausstanzen gebildetes Langloch begrenzende, aufeinanderzu federnde, dem Einpressen in eine Öffnung einer Leiterplatte dienende Schenkel aufweist, denen eine der Begrenzung des Einsteckweges dienende Schulter eines Trägerteils zugeordnet ist, und bei der die Kontaktfederbuchse eine Vielzahl von Kontaktfedern umfaßt, die sich etwa vom Bereich der Schulter des Trägerteils ausgehend im Abstand von der Buchsenachse zum Bereich der vorderen Stifteinführungsöffnung hin erstrecken und etwa in ihrem mittleren Bereich den kleinsten Abstand von der Buchsenachse aufweisen.The invention relates to a contact pin-contact spring socket assembly, in which the contact pin has two approximately parallel, a slot formed by punching oblong, mutually resilient, serving for pressing into an opening in a circuit board, one of which serves to limit the insertion path shoulder one Carrier part is assigned, and in which the contact spring bushing comprises a plurality of contact springs, which extend approximately from the region of the shoulder of the carrier part at a distance from the socket axis to the region of the front pin insertion opening and have the smallest distance from the socket axis in their central region .

Bei einer bekannten Kontaktstift-Kontaktfederbuchsen-Baueinheit dieser Art gemäß einer früheren Anmeldung gemäß DE-A-39 15 644.3 (dieses Dokument fällt unter Art. 54(3) EPÜ) ist der Kontaktstift als mit dem Trägerteil, das die der Begrenzung des Einsteckweges dienende Schulter aufweist, einstückiges Bauelement ausgebildet. Dieses wird zunächst als Drehteil hergestellt, das die Schulter und einen von dieser vorstehenden Kontaktstiftabschnitt umfaßt, aus dem nach Abfräsen des auf beiden Seiten überflüssigen Materials und damit Überführung in eine flache Form in einem folgenden Stanzvorgang das Langloch ausgestanzt wird. Stattdessen ist es auch möglich, von einem Kontaktblechbandmaterial mit zwei Bandbereichen unterschiedlicher Stärke auszugehen, und zwar einem Bereich mit einer dem Durchmesser der Schulter entsprechenden Stärke und einem Bereich mit einer der gewünschten Kontaktstiftdicke entsprechenden Stärke. Aus diesem wird jeweils ein Rohling unter gleichzeitiger Bildung des Langlochs ausgestanzt; anschließend wird bei diesem Rohling dann die Schulter in einem Abdrehvorgang gebildet. Beide Herstellungswege sind relativ aufwendig und kostspielig.In a known contact pin contact spring socket assembly of this type according to an earlier application according to DE-A-39 15 644.3 (this document falls under Art. 54 (3) EPC), the contact pin is as with the carrier part that serves to limit the insertion path Has shoulder, one-piece component formed. This is first produced as a turned part, which comprises the shoulder and a contact pin section protruding therefrom, from which the elongated hole is punched out after the material that is superfluous on both sides has been milled and thus converted into a flat shape in a subsequent punching process. Instead, it is also possible to start from a contact sheet metal strip material with two strip regions of different thickness, namely a region with a thickness corresponding to the diameter of the shoulder and a region with a thickness corresponding to the desired contact pin thickness. A blank is punched out of each of these, simultaneously forming the elongated hole; the shoulder is then formed in a blanking process for this blank. Both manufacturing methods are relatively complex and expensive.

Es hat sich nun gezeigt, daß derartige Kontaktstift-Kontaktfederbuchsen-Baueinheiten auf wesentlich einfachere Weise als bisher in einwandfreier Qualität herstellbar sind, wenn der Kontaktstift erfindungsgemäß als von dem Trägerteil, das die der Begrenzung des Einsteckweges dienende Schulter aufweist unabhängiges Stanzteil ausgebildet und mit der Schulter über ein Klemmverbindungselement verbindbar ist. Zweckmäßigerweise ist das Trägerteil dabei mit einer auf der der Kontaktfederbuchse abgewandten Seite offenen Klemmbohrung versehen, in die der Kontaktstift mit seinem rückwärtigen Stiftende unter Herstellung einer Klemmverbindung einführbar ist.It has now been shown that such contact pin contact spring socket assemblies can be produced in a much simpler way than before in perfect quality if the contact pin is designed according to the invention as a stamped part which is independent of the carrier part which has the shoulder serving to limit the insertion path and can be connected to the shoulder via a clamping connection element. The carrier part is expediently provided with a clamping bore which is open on the side facing away from the contact spring bushing and into which the contact pin with its rear pin end can be inserted to produce a clamp connection.

Eine besonders einfache Ausführung ergibt sich, wenn das rückwärtige Stiftende des Kontaktstifts einen rechteckigen, vorzugsweise quadratischen Querschnitt besitzt und der Abstand der diametral einander gegenüberliegenden Stiftkanten auf den Durchmesser der Klemmbohrung abgestimmt ist.A particularly simple design results if the rear pin end of the contact pin has a rectangular, preferably square cross-section and the distance between the diametrically opposite pin edges is matched to the diameter of the clamping bore.

Eine qualitativ bessere Verbindung infolge elastischer Stiftverformung während des Einsteckvorgangs ergibt sich, wenn zwei einander gegenüberliegende Seiten des Stiftendes mit einer zur Stiftachse hin gerichteten, etwa achsparallelen Einwölbung versehen sind. Auf diese Weise können sich die äußeren Kantenbereiche beim Einsteckvorgang jeweils zur Krümmungsachse der Wölbung hin elastisch verformen.A qualitatively better connection as a result of elastic pin deformation during the insertion process is obtained if two opposite sides of the pin end are provided with an approximately axially parallel curvature directed towards the pin axis. In this way, the outer edge regions can each deform elastically towards the axis of curvature of the curvature during the insertion process.

Als in fertigungstechnischer Hinsicht und auch im Hinblick auf die Qualität der Verbindung besonders vorteilhaft hat es sich erwiesen, wenn das Stiftende analog zum Kontaktstift zwei etwa parallele, ein durch Ausstanzen gebildetes Rastlangloch begrenzende, aufeinanderzu federnde, in die Rastbohrung einführbare Rastschenkel aufweist.It has proven to be particularly advantageous in terms of production technology and also with regard to the quality of the connection if the pin end has two approximately parallel, resilient, resilient locking legs which can be inserted into the locking hole and which are analogous to the contact pin and delimit a punched slot.

Weitere Einzelheiten, Vorteile und Merkmale der Erfindung ergeben sich aus der folgenden Beschreibung nicht einschränkend erläuterter Ausführungsbeispiele anhand der Zeichnung, auf die bezüglich aller im Text beschriebenen Einzelheiten ausdrücklich verwiesen wird. Es zeigen

Fig. 1
eine schematische Darstellung einer Kontaktstift-Kontaktbuchsen-Einheit nach der Erfindung,
Fig. 2
eine Seitenansicht einer ersten Kontaktstiftausführung,
Fig. 3
eine Seitenansicht einer aus der ersten Kontaktstiftausführung weiter entwickelten weiteren Ausführung,
Fig. 4
eine Seitenansicht einer noch weiteren Kontaktstiftausführung und
Fig. 5
eine Seitenansicht einer Kontaktstift-Kontaktbuchsen-Baueinheit in größerem Maßstab, teilweise im Schnitt, mit der Kontaktstiftausführung nach Fig.4.
Further details, advantages and features of the invention result from the following description of non-restrictive exemplary embodiments with reference to the Drawing to which express reference is made to all details described in the text. Show it
Fig. 1
1 shows a schematic representation of a contact pin contact socket unit according to the invention,
Fig. 2
a side view of a first contact pin embodiment,
Fig. 3
2 shows a side view of a further embodiment developed from the first contact pin embodiment,
Fig. 4
a side view of yet another contact pin design and
Fig. 5
a side view of a contact pin contact socket assembly on a larger scale, partially in section, with the contact pin embodiment according to Fig.4.

Die Fig. 1 und 5 zeigen eine Kontaktbuchsen-Kontaktstift-Baueinheit 1 mit einer Kontaktfederbuchse 2 für die sichere Stromübertragung zu bzw. von einem in sie eingeführten, in der Zeichnung nicht dargestellten Steckerstift zu einem mit der Buchse mechanisch und elastisch verbundenen Kontaktstift 3. Für die Festlegung von Kontaktstift-Kontaktbuchsen-Baueinheiten 1 in Öffnungen einer nicht näher veranschaulichten elektrischen Leiterplatte ist der dem Steckerstifteinführungsende abgewandte, flach ausgebildete Kontaktstift 3 mit zwei etwa parallelen, ein durch Ausstanzen gebildetes Langloch 4 begrenzenden, aufeinander zu federnden Schenkeln 5 versehen. Diese Schenkel 5 laufen in ein Stiftende 6 aus, das in eine zentrale Klemmbohrung 7 in einem Trägerteil 8 mit einer der Begrenzung des Einsteckweges dienenden Schulter 8 der Kontaktfederbuchse 2 vorgesehen ist. Wie ersichtlich, liegen bei dem veranschaulichten Ausführungsbeispiel die ins Buchseninnere eingeführten Kontaktfedern 9 mit ihrem hinteren Ende an einem zylindrischen Ringansatz 10 an, der von der Schulter vorsteht und an seinem Fuß eine Ringnut 11 aufweist. In diese Ringnut 11 greift der umgebördelte Rand des in Form einer dünnwandig verformbaren Hülse ausgebildeten Buchsenkörpers 12 der Kontaktfederbuchse 2 ein. Dabei preßt der Rand unter stirnseitiger Anlage an der Schulter die zwischen ihm und dem Ringansatz 10 befindlichen Kontaktfedern 9 fest an.1 and 5 show a contact socket contact pin assembly 1 with a contact spring socket 2 for safe power transmission to or from an inserted therein, not shown in the drawing pin to a mechanically and elastically connected contact pin 3. For the fixing of contact pin contact socket assemblies 1 in openings of an electrical circuit board, not shown in detail, the flat-shaped contact pin 3 facing away from the plug insertion end is provided with two approximately parallel legs 5 that are resilient to one another and that delimit an elongated hole 4 formed by punching out. These legs 5 end in a pin end 6, which is provided in a central clamping bore 7 in a carrier part 8 with a shoulder 8 of the contact spring bushing 2 serving to limit the insertion path. As can be seen, the illustrated Embodiment the contact springs 9 inserted into the socket interior with their rear end on a cylindrical ring extension 10 which protrudes from the shoulder and has an annular groove 11 on its foot. The flanged edge of the socket body 12 of the contact spring socket 2, which is designed in the form of a thin-walled deformable sleeve, engages in this annular groove 11. The edge presses under contact with the shoulder on the shoulder between the contact springs 9 located between it and the ring shoulder 10.

Innerhalb des durch eine Umbördelung gebildeten Funkenschutzrandes mit einer zentralen Stifteinführöffnung 13 liegt an der Umbördelung ein Ringkörper 14 an, dessen Innendurchmesser etwas kleiner als die im Buchsenkörper 12 vorgesehene Stifteinführöffnung 13 gewählt ist. Die am Innenumfang verteilten Kontaktfedern 9, die im Bereich der Schulter fixiert sind, sind mit ihren freien Enden frei beweglich in einem zwischen dem Buchsenkörper 12 und dem Ringkörper 14 begrenzten Ringspalt 15 geführt.Within the spark protection rim formed by a flange with a central pin insertion opening 13, an annular body 14 lies against the flange, the inside diameter of which is selected to be somewhat smaller than the pin insertion opening 13 provided in the socket body 12. The contact springs 9 distributed on the inner circumference, which are fixed in the region of the shoulder, are freely movable with their free ends in an annular gap 15 delimited between the socket body 12 and the annular body 14.

Die in Fig. 5 veranschaulichte radial nach innen gerichtete Wölbung der Kontaktfedern 9 ist dadurch erzielt, daß der Buchsenkörper 12 von außen her an zwei in Bezug auf den Ringkörper 14 bzw. den Ringansatz 10 axial versetzten Stellen mit Abstand voneinander jeweils mit einer radial nach innen ragenden Ringwulst 16 bzw. 17 versehen ist, die an den Kontaktfedern 9 anliegt und sie radial nach innen elastisch verformt. Der Buchsenkörper 12 ist im Bereich jeder Ringwulst 16 bzw. 17 mit einem Innendurchmesser versehen, der kleiner ist als der Außendurchmesser des die freien Enden der Kontaktfedern 6 abstützenden Ringkörpers 14, vermehrt um den doppelten Durchmesser der Kontaktfedern 9.The radially inward curvature of the contact springs 9 illustrated in FIG. 5 is achieved in that the socket body 12 from the outside at two points axially offset with respect to the ring body 14 or the ring extension 10 each with a radially inward distance projecting annular bead 16 or 17 is provided, which abuts the contact springs 9 and elastically deforms them radially inwards. The socket body 12 is provided in the region of each annular bead 16 or 17 with an inner diameter which is smaller than the outer diameter of the annular body 14 supporting the free ends of the contact springs 6, increased by twice the diameter of the contact springs 9.

Bei der in Fig. 1 vereinfacht dargestellten Kontaktbuchsen-Kontaktstift-Baueinheit 1 ist gegenüber der mehr ins einzelne gehend veranschaulichten Ausführung nach Fig. 5 eine zusätzliche radial Einprägung 18 vorgesehen, um die nicht gezeigten Kontaktfedern innerhalb der Kontaktfederbuchse 2 fest an den ebenfalls nicht dargestellten Ringansatz 10 anzupressen.In the case of the contact socket / contact pin assembly 1, which is shown in simplified form in FIG. 1, the embodiment according to FIG. 5 is illustrated in more detail an additional radial indentation 18 is provided in order to press the contact springs (not shown) inside the contact spring bushing 2 firmly against the ring extension 10, which is also not shown.

Fig. 2 veranschaulicht die einfachste Form der Bildung des rückwärtigen Stiftendes 6 des Kontaktstifts 3. Hier besitzt das Stiftende 6 nämlich einen rechteckigen, vorzugsweise quadratischen Querschnitt, und der Abstand der diametral einander gegenüberliegenden Stiftkanten ist auf den Durchmesser der Klemmbohrung 7 abgestimmt. Durch leichte Überdimensionierung des Stiftkantendiagonalabstands greifen die Stiftkanten beim Verbinden des Kontaktstifts 3 über das Stiftende 6 in die Wandung der Klemmbohrung 7 der Kontaktfederbuchse 2. Auf diese Weise ist ein fester Halt und auch ein einwandfreier Kontakt gewährleistet.Fig. 2 illustrates the simplest form of the formation of the rear pin end 6 of the contact pin 3. Here, the pin end 6 has a rectangular, preferably square cross section, and the distance between the diametrically opposite pin edges is matched to the diameter of the clamping bore 7. Due to the slight oversizing of the pin edge diagonal distance, the pin edges engage when connecting the contact pin 3 via the pin end 6 into the wall of the clamping bore 7 of the contact spring bushing 2. This ensures a firm hold and also a perfect contact.

Die Ausführung gemäß Fig. 3 zeigt eine demgegenüber verbesserte Querschnittsform des Stiftendes 6. Wie in dieser Figur angedeutet, sind zwei einander gegenüberliegende Seiten des Stiftendes 6 mit einer zur Stiftachse hin gerichteten, etwa achsparallelen Einwölbung 19 versehen. Dadurch sind die äußeren Kantenbereiche des Stiftendes 6 beim Einsteckvorgang jeweils zur Krümmungsachse der Wölbung 19 hin elastisch verformbar.The embodiment according to FIG. 3 shows an improved cross-sectional shape of the pin end 6. As indicated in this figure, two opposite sides of the pin end 6 are provided with an approximately axially parallel bulge 19 directed towards the pin axis. As a result, the outer edge regions of the pin end 6 are each elastically deformable toward the axis of curvature of the curvature 19 during the insertion process.

Eine qualitativ bessere Verbindung des Kontaktstifts 3 mit der Kontaktbuchse 2 infolge elastischer Stiftverformung während des Einsteckvorgangs ist bei der Ausführung nach den Fig. 4 und 5 sichergestellt. Wie ersichtlich, ist das Stiftende 6 analog zum eigentlichen Kontaktstift 3 mit einer Ausstanzung versehen, durch die zwei ein Klemmlangloch 20 begrenzende Klemmschenkel 21 gebildet sind, die beim Einführen in die Klemmbohrung 7 aufeinander zu federn.A better quality connection of the contact pin 3 with the contact socket 2 due to elastic pin deformation during the insertion process is ensured in the embodiment according to FIGS. 4 and 5. As can be seen, the pin end 6 is provided, analogously to the actual contact pin 3, with a punched-out portion, by means of which two clamping limbs 21 delimiting a clamping elongated hole 20 are formed, which spring towards one another when inserted into the clamping bore 7.

Claims (5)

  1. Contact pin/contact spring bushing modular unit, in which the contact pin (3) exhibits two approximately parallel legs (5) which bound a long hole (4), formed by punching-out, spring up against one another and serve to press a printed circuit board into an opening, to which legs a shoulder, serving to bound the plug-in path, of a carrier part (8) is assigned, and in which the contact spring bushing (2) comprises a plurality of contact springs (9), which extend, starting approximately from the area of the shoulder of the carrier part (8), at a distance from the bushing axis, to the area of the front pin insertion opening (13) and exhibit approximately in their central area the smallest distance from the bushing axis, characterised in that the contact pin (3) is configured as a punched part independent from the carrier part (8) which exhibits the shoulder serving to bound the plug-in path and can be connected to the carrier part (8) by a clamping connection element (6, 7).
  2. Modular unit according to Claim 1, characterised in that the carrier part (8) is provided with a clamping bore (7), open on the side facing away from the contact spring bushing (2), into which bore the contact pin (3) can be inserted by its rear pin end (6), thereby creating a clamping connection.
  3. Modular unit according to Claim 2, characterised in that the rear pin end (6) of the contact pin (3) possesses a rectangular, preferably square, cross-section and the distance between the diametrically opposed pin edges is matched to the diameter of the clamping bore (7).
  4. Modular unit according to Claim 3, characterised in that two mutually opposite sides of the pin end (6) are provided with an approximately axis-parallel curvature (19), directed towards the pin axis.
  5. Modular unit according to Claim 1 or 2, characterised in that the pin end (6), analogously to the contact pin (3), exhibits two clamping legs (21) which bound a clamping longhole (20), formed by punching-out, spring up against one another and can be inserted into the clamping bore (7).
EP91111512A 1990-08-01 1991-07-10 Pin-socket unit Expired - Lifetime EP0471971B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4024456A DE4024456A1 (en) 1990-08-01 1990-08-01 Electric spring contact and bush component - has projecting pin for PCB connection with two stamped-out slots and shoulder limiting depth of insertion
DE4024456 1990-08-01

Publications (2)

Publication Number Publication Date
EP0471971A1 EP0471971A1 (en) 1992-02-26
EP0471971B1 true EP0471971B1 (en) 1995-03-29

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ID=6411456

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91111512A Expired - Lifetime EP0471971B1 (en) 1990-08-01 1991-07-10 Pin-socket unit

Country Status (4)

Country Link
US (1) US5106328A (en)
EP (1) EP0471971B1 (en)
AT (1) ATE120583T1 (en)
DE (2) DE4024456A1 (en)

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JPH07120545B2 (en) * 1991-03-27 1995-12-20 山一電機株式会社 Nested pressure connector
DE9213611U1 (en) * 1992-10-08 1992-12-03 Siemens AG, 8000 München Contact element for pressing into holes in a circuit board
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Also Published As

Publication number Publication date
DE4024456A1 (en) 1992-02-06
DE59105038D1 (en) 1995-05-04
EP0471971A1 (en) 1992-02-26
ATE120583T1 (en) 1995-04-15
US5106328A (en) 1992-04-21

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