EP0823753B1 - Contact pin - Google Patents

Contact pin Download PDF

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Publication number
EP0823753B1
EP0823753B1 EP97113106A EP97113106A EP0823753B1 EP 0823753 B1 EP0823753 B1 EP 0823753B1 EP 97113106 A EP97113106 A EP 97113106A EP 97113106 A EP97113106 A EP 97113106A EP 0823753 B1 EP0823753 B1 EP 0823753B1
Authority
EP
European Patent Office
Prior art keywords
contact pin
contact
free end
protective element
end portion
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
EP97113106A
Other languages
German (de)
French (fr)
Other versions
EP0823753A1 (en
Inventor
Peter Murray
Gerhard Huiskamp
Rainer Schulze
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.)
Weidmueller Interface GmbH and Co KG
Original Assignee
Weidmueller Interface GmbH and Co KG
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 Weidmueller Interface GmbH and Co KG filed Critical Weidmueller Interface GmbH and Co KG
Publication of EP0823753A1 publication Critical patent/EP0823753A1/en
Application granted granted Critical
Publication of EP0823753B1 publication Critical patent/EP0823753B1/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
    • H01R13/44—Means for preventing access to live contacts
    • H01R13/447—Shutter or cover plate
    • 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
    • H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
    • H01R13/035—Plated dielectric material

Definitions

  • a contact pin which has a contacting zone and has a free end portion extending therefrom, the latter with a protection element lying within the cross-sectional contour of the contacting zone insulating material is connected.
  • the contacting zone there and the free end section have the same cross-sectional dimensions.
  • the protective element is in a bore made on the end face in the free end section of the contact pin used. As a result, only the end face portion of the contact is against contact protected.
  • the protective plug there extends the contact.
  • Such Construction is limited to relatively large contact pins Cross section with regard to the requirement of the drilling.
  • the present invention has for its object a contact pin for to create the connection technology mentioned at the outset, for those to be used there Contact pins of small cross-section creates good finger safety without that Impair contact function.
  • the solution according to the invention is that the free end section opposite the contact zone is reduced in its cross-sectional dimensions and that Protective element overlaps the free end section in a cap shape.
  • This design can also be realized with contact pins with a small cross-section.
  • the cap-shaped Reaching over the free end creates a high degree of finger safety in the side Area of the free end section without any significant extension of the contact pin.
  • the reduction leads the cross-sectional dimensions of the free end section in relation to the contacting zone so that the protective element is still within the cross-sectional contour the contacting zone remains, so that the contacting function completely remains unaffected and by the protective element also with the contact zone interacting socket contact is not impaired, in particular possibly can be damaged or expanded too much.
  • the protective element with the free end section of the contact pin positively connected to with great security to prevent the protective element in the. When pulling the contact pin Contact socket remains.
  • the protective element is on the outside in an area that does not interact with the contact socket with a Provided locking projection with a locking recess of the housing of the Socket contact bearing component can work together for an additional To form a trigger lock.
  • a contact pin 1 which is spaced apart has a contacting zone 2 from its free end, which is in the contacting direction in their cross-sectional dimensions compared to the contact pin thickness in the rest is widened.
  • This is achieved in that the contact pin material in the contact zone 2 cut approximately in the middle from one side to the other side is and the material areas in addition to the cut 3 pronounced in opposite directions are, so that there are corresponding characteristics 4. It's the outside surfaces of these forms 4, which then make contact with the one indicated in FIG interact about tulip-shaped socket contact 5. Like the view of the Figure 1 shows, this also results in a seen in the direction of contact Dimensions Free end section 6 of the contact pin, which is smaller than the contacting zone 2 1.
  • the protective element 7 can be, for example, a sleeve-like injection molded part is snapped onto the free end section 6 of the contact pin 1.
  • the protective element 7 with the free end section 6 is configured of the contact pin 1 in a positive connection.
  • the illustrated embodiment is a recess in the free end portion 6 of the contact pin 1 at one point 8 provided and on the inside of the protective element 7 there is a locking projection 9, which can snap into the recess 8. This ensures that when pulling the contact pin, the protective element 7 is not about Socket contact 5 gets stuck.
  • the protective element 7 can also be on the outside, Appropriately at a point that is not in contact with the socket contact 5 can come, be provided with a locking projection.
  • a locking recess for the locking projection 10 may be provided in the insulating housing of the component that carries the socket contact 5. This latching acts as an additional pull-off lock for the plug connection.
  • the protective element can also be produced in another way and with the free End portion of the contact pin 1 are connected, for example by immersion of the free end section 6 of the contact pin 1 in a plastic bath Wrapping the free end section with an insulation material layer or through direct spraying of the insulation material onto the free end section.

Abstract

The electrical contact pin (1) is produced as a metal forming from bar material and has sections (4) that engage the contact zones of a U shaped spring element (5). The contact sections of the pin are such that one half of the pin is deformed to contact one side of the contact element and the other half is deformed in the opposite direction. The tip of the pin (6) is fitted with a protective isolating element (7) that has lugs formed to engage in recesses on the pin. The insulation layer may also be formed by moulding or by dipping the pin in a suitable fluid.

Description

In der modernen Verbindungstechnik werden in zunehmendem Maße beispielsweise Reihenklemmen, Klemmverbinder und dergleichen eingesetzt, die auch mit Kontaktstiften zur Erstellung von Steckverbindungen versehen sind. An den Steckverbindungspartnern befinden sich dabei dann etwa tulpenförmige Buchsenkontakte. Während Letztere normalerweise im Inneren von Isolierstoffgehäusen liegen und von daher berührungsgeschützt sind, gilt dieses häufig für die Kontaktstifte nicht. Auch hier aber besteht der Wunsch nach einem Berührungsschutz.In modern connection technology, for example Terminal blocks, clamp connectors and the like used, which also with Contact pins are provided for creating plug connections. At the connector partners there are then approximately tulip-shaped socket contacts. While the latter are usually inside the insulating housing and are therefore protected against contact, this often does not apply to the contact pins. But here too there is a desire for protection against accidental contact.

Aus der FR-A-2 572 595 ist ein Kontaktstift bekannt, der eine Kontaktierzone und einen davon ausgehenden freien Endabschnitt aufweist, welch Letzterer mit einem innerhalb der Querschnittskontur der Kontaktierzone liegenden Schutzelement aus isolierendem Material verbunden ist. Die dortige Kontaktierzone und der freie Endabschnitt haben die gleichen Querschnittsabmessungen. Das Schutzelement ist in eine stirnseitig in den freien Endabschnitt des Kontaktstiftes eingebrachte Bohrung eingesetzt. Dadurch wird nur der Stirnflächenabschnitt des Kontaktes gegen Berührung geschützt. Der dortige Schutzstopfen verlängert den Kontakt. Eine derartige Konstruktion beschränkt sich in ihrer Anwendung auf Kontaktstifte mit relativ großem Querschnitt im Hinblick auf das Erfordernis der Bohrung.From FR-A-2 572 595 a contact pin is known which has a contacting zone and has a free end portion extending therefrom, the latter with a protection element lying within the cross-sectional contour of the contacting zone insulating material is connected. The contacting zone there and the free end section have the same cross-sectional dimensions. The protective element is in a bore made on the end face in the free end section of the contact pin used. As a result, only the end face portion of the contact is against contact protected. The protective plug there extends the contact. Such Construction is limited to relatively large contact pins Cross section with regard to the requirement of the drilling.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, einen Kontaktstift für die eingangs genannte Verbindungstechnik zu schaffen, der für die dort einzusetzenden Kontaktstifte geringen Querschnittes eine gute Fingersicherheit schafft, ohne die Kontaktfunktion zu beeinträchtigen.The present invention has for its object a contact pin for to create the connection technology mentioned at the outset, for those to be used there Contact pins of small cross-section creates good finger safety without that Impair contact function.

Die erfindungsgemäße Lösung besteht darin, daß der freie Endabschnitt gegenüber der Kontaktierzone in seinen Querschnittsabmessungen verkleinert ist und das Schutzelement den freien Endabschnitt kappenförmig übergreift. Diese Bauweise läßt sich auch bei Kontaktstiften geringen Querschnittes verwirklichen. Das kappenförmige Übergreifen des freien Endes schafft eine hohe Fingersicherheit im seitlichen Bereich des freien Endabschnittes, ohne zu einer nennenswerten Verlängerung des Kontaktstiftes zu führen. Trotz des kappenförmigen Übergreifens führt die Verringerung der Querschnittsabmessungen des freien Endabschnittes im Verhältnis zur Kontaktierzone dazu, daß das Schutzelement immer noch innerhalb der Querschnittskontur der Kontaktierzone verbleibt, so daß die Kontaktierfunktion völlig unbeeinträchtigt bleibt und von dem Schutzelement auch der mit der Kontaktierzone zusammenwirkende Buchsenkontakt nicht beeinträchtigt, insbesondere womöglich beschädigt oder zu weit aufgeweitet werden kann.The solution according to the invention is that the free end section opposite the contact zone is reduced in its cross-sectional dimensions and that Protective element overlaps the free end section in a cap shape. This design can also be realized with contact pins with a small cross-section. The cap-shaped Reaching over the free end creates a high degree of finger safety in the side Area of the free end section without any significant extension of the contact pin. Despite the cap-shaped overlap, the reduction leads the cross-sectional dimensions of the free end section in relation to the contacting zone so that the protective element is still within the cross-sectional contour the contacting zone remains, so that the contacting function completely remains unaffected and by the protective element also with the contact zone interacting socket contact is not impaired, in particular possibly can be damaged or expanded too much.

In zweckmäßiger weiterer Ausgestaltung ist das Schutzelement mit dem freien Endabschnitt des Kontaktierstiftes formschlüssig verbunden, um mit großer Sicherheit zu verhindern, daß etwa beim Ziehen des Kontaktstiftes das Schutzelement in der Kontaktbuchse verbleibt.In an expedient further embodiment, the protective element with the free end section of the contact pin positively connected to with great security to prevent the protective element in the. When pulling the contact pin Contact socket remains.

In einer weiteren sehr zweckmäßigen Ausgestaltung ist das Schutzelement außenseitig an einem nicht mit der Kontaktbuchse zusammenwirkenden Bereich mit einem Rastvorsprung versehen, der mit einer Rastausnehmung des Gehäuses des den Buchsenkontakt tragenden Bauteiles zusammenwirken kann, um eine zusätzliche Abziehsperre zu bilden. Weitere bevorzugte Ausgestaltungen sind in den Unteransprüchen gekennzeichnet.In another very useful embodiment, the protective element is on the outside in an area that does not interact with the contact socket with a Provided locking projection with a locking recess of the housing of the Socket contact bearing component can work together for an additional To form a trigger lock. Further preferred configurations are in the subclaims characterized.

Ein Ausführungsbeispiel eines Kontaktstiftes gemäß der Erfindung wird nachstehend unter Bezugnahme auf die beigefügte Zeichnung näher beschrieben.An embodiment of a contact pin according to the invention is shown below described in more detail with reference to the accompanying drawing.

Es zeigen:

Figur 1
einen Kontaktstift gemäß der Erfindung in Schmalseitenansicht mit einem Schutzelement in Schnittdarstellung,
Figur 2
den Kontaktstift nach Figur 1 gesehen auf seine breite Seite, mit dem Schutzelement in Schnittdarstellung.
Show it:
Figure 1
2 shows a contact pin according to the invention in a narrow side view with a protective element in a sectional view,
Figure 2
seen the contact pin of Figure 1 on its wide side, with the protective element in a sectional view.

Im dargestellten Ausführungsbeispiel ist ein Kontaktstift 1 vorgesehen, der abständig von seinem freien Ende eine Kontaktierzone 2 aufweist, die in Kontaktierrichtung in ihren Querschnittsabmessungen gegenüber der Kontaktstiftdicke im übrigen verbreitert ist. Dies ist dadurch erreicht, daß in der Kontaktierzone 2 das Kontaktierstiftmaterial etwa in der Mitte von der einen Seite bis zur anderen Seite durchschnitten ist und die Materialbereiche neben dem Schnitt 3 gegensinnig ausgeprägt sind, so daß sich entsprechende Ausprägungen 4 ergeben. Es sind die Außenflächen dieser Ausprägungen 4, die dann kontaktierend mit dem in Figur 1 angedeuteten etwa tulpenförmigen Buchsenkontakt 5 zusammenwirken. Wie die Anschauung der Figur 1 zeigt, ergibt sich hierdurch auch ein in Kontaktierrichtung gesehen in den Abmessungen gegenüber der Kontaktierzone 2 verkleinerter freier Endabschnitt 6 des Kontaktstiftes 1.In the illustrated embodiment, a contact pin 1 is provided which is spaced apart has a contacting zone 2 from its free end, which is in the contacting direction in their cross-sectional dimensions compared to the contact pin thickness in the rest is widened. This is achieved in that the contact pin material in the contact zone 2 cut approximately in the middle from one side to the other side is and the material areas in addition to the cut 3 pronounced in opposite directions are, so that there are corresponding characteristics 4. It's the outside surfaces of these forms 4, which then make contact with the one indicated in FIG interact about tulip-shaped socket contact 5. Like the view of the Figure 1 shows, this also results in a seen in the direction of contact Dimensions Free end section 6 of the contact pin, which is smaller than the contacting zone 2 1.

Zweckmäßig wird auch in Querrichtung zur Kontaktierrichtung, gesehen auf die breite Seite des Kontaktstiftes 1, der freie Endabschnitt 6 in seinen Abmessungen im Verhältnis zur Kontaktierzone 2 verkleinert.It is also expedient to see the width in the transverse direction to the contact direction Side of the contact pin 1, the free end portion 6 in its dimensions in relation reduced to contact zone 2.

Der in seinen Abmessungen gegenüber der Querschnittskontur der Kontaktierzone 2 somit verkleinerte freie Endabschnitt 6 wird nun mir einem Schutzelement 7 aus isolierendem Material umgeben, das, wie die Figuren 1 und 2 zeigen, mit seinen Außenabmessungen innerhalb der Querschnittskontur der Kontaktierzone 2 verbleibt und somit insbesondere in Kontaktierrichtung nicht nach außen über die Ausprägungen 4 vorsteht, aber auch in der anderen Richtung (Figur 2) zweckmäßig innerhalb der Kontur verbleibt.The dimensions of the cross-sectional contour of the contact zone 2 thus reduced free end section 6 is now with a protective element 7 made of insulating Surround material that, as shown in Figures 1 and 2, with its outer dimensions remains within the cross-sectional contour of the contact zone 2 and thus, in particular in the contacting direction, not to the outside via the features 4 protrudes, but also expediently in the other direction (FIG. 2) within the contour remains.

Das Schutzelement 7 kann beispielsweise ein hülsenartiges Spritzgußteil sein, das auf den freien Endabschnitt 6 des Kontaktstiftes 1 aufgeschnappt wird. In zweckmäßiger Ausgestaltung steht dabei das Schutzelement 7 mit dem freien Endabschnitt 6 des Kontaktstiftes 1 in Formschlußverbindung. Im dargestellten Ausführungsbeispiel ist im freien Endabschnitt 6 des Kontaktstiftes 1 an einer Stelle eine Rastausnehmung 8 vorgesehen und innenseitig am Schutzelement 7 befindet sich ein Rastvorsprung 9, der in die Rastausnehmung 8 einschnappen kann. Auf diese Weise ist sichergestellt, daß beim Ziehen des Kontaktstiftes das Schutzelement 7 nicht etwa im Buchsenkontakt 5 steckenbleibt.The protective element 7 can be, for example, a sleeve-like injection molded part is snapped onto the free end section 6 of the contact pin 1. In a more appropriate way In this case, the protective element 7 with the free end section 6 is configured of the contact pin 1 in a positive connection. In the illustrated embodiment is a recess in the free end portion 6 of the contact pin 1 at one point 8 provided and on the inside of the protective element 7 there is a locking projection 9, which can snap into the recess 8. This ensures that when pulling the contact pin, the protective element 7 is not about Socket contact 5 gets stuck.

In weiterer zweckmäßiger Ausgestaltung kann das Schutzelement 7 auch außenseitig, zweckmäßig an einer Stelle, die nicht mit dem Buchsenkontakt 5 in Berührung kommen kann, mit einem Rastvorsprung versehen sein. In dem Isolierstoffgehäuse desjenigen Bauteiles, das den Buchsenkontakt 5 trägt, kann dann an entsprechender Stelle eine Rastausnehmung für den Rastvorsprung 10 vorgesehen sein. Diese Verrastung wirkt als zusätzliche Abziehsperre für die Steckverbindung.In a further expedient embodiment, the protective element 7 can also be on the outside, Appropriately at a point that is not in contact with the socket contact 5 can come, be provided with a locking projection. In the insulating housing of the component that carries the socket contact 5 can then on the corresponding Place a locking recess for the locking projection 10 may be provided. This latching acts as an additional pull-off lock for the plug connection.

Abweichend von dargestellten und vorstehend beschriebenen Ausführungsbeispiel kann das Schutzelement auch auf andere Weise hergestellt und mit dem freien Endabschnitt des Kontaktstiftes 1 verbunden werden, beispielsweise durch Eintauchen des freien Endabschnittes 6 des Kontaktstiftes 1 in ein Kunststoffbad, durch Bewickeln des freien Endabschnittes mit einer Isolationsmaterialschicht oder durch direktes Aufspritzen des Isolationsmateriales auf den freien Endabschnitt.Deviating from the illustrated embodiment described above the protective element can also be produced in another way and with the free End portion of the contact pin 1 are connected, for example by immersion of the free end section 6 of the contact pin 1 in a plastic bath Wrapping the free end section with an insulation material layer or through direct spraying of the insulation material onto the free end section.

Claims (7)

  1. Contact pin with a contact zone (2) and a free end portion (6) which extends therefrom and which is connected with a protective element (7) of insulating material lying within the cross-sectional outline of the contact zone (2), characterised in that the free end portion (6) is reduced in its cross-sectional dimensions relative to the contact zone (2) and the protective element (7) engages over the free end portion (6) in cap-like manner.
  2. Contact pin according to claim 1, characterised in that the protective element (7) is mechanically positively connected with the free end portion (6) of the contact pin (1).
  3. Contact pin according to one of the preceding claims, characterised in that the protective element (7) is provided at the outer side with a detent projection (10).
  4. Contact pin according to one of the preceding claims, characterised in that the protective element (7) has at the inner wall a detent hook (9) for which a detent recess (8) is provided in the material of the free end portion (6) of the contact pin (1).
  5. Contact pin according to claim 4, characterised in that the cap-like protective element (7) is detented onto the free end portion (6) of the contact pin (1) by snap fitting.
  6. Contact pin according to claim 1, characterised in that the protective element (7) is formed by immersion at the free end portion (6) into a bath of plastics material.
  7. Contact pin according to claim 1, characterised in that the free end portion (6) of the contact pin (1) is wound around by the protective element (7).
EP97113106A 1996-08-08 1997-07-30 Contact pin Expired - Lifetime EP0823753B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29613737U DE29613737U1 (en) 1996-08-08 1996-08-08 Contact pin
DE29613737U 1996-08-08

Publications (2)

Publication Number Publication Date
EP0823753A1 EP0823753A1 (en) 1998-02-11
EP0823753B1 true EP0823753B1 (en) 2001-10-24

Family

ID=8027576

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97113106A Expired - Lifetime EP0823753B1 (en) 1996-08-08 1997-07-30 Contact pin

Country Status (4)

Country Link
EP (1) EP0823753B1 (en)
AT (1) ATE207658T1 (en)
DE (2) DE29613737U1 (en)
ES (1) ES2164285T3 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3670495B2 (en) * 1998-11-09 2005-07-13 矢崎総業株式会社 Terminal
AU4268501A (en) * 2000-03-31 2001-10-08 Tyco Electronics Amp Gmbh Pin, pluggable connection between the pin and a socket and use of the pin
US8951051B2 (en) * 2011-10-10 2015-02-10 Lear Corporation Connector having optimized tip
CN103762434B (en) * 2014-01-22 2015-10-21 四川华丰企业集团有限公司 A kind of metal contact element and high-voltage electric connector thereof
CN109565125B (en) * 2016-08-16 2021-05-18 Abb瑞士股份有限公司 Switchgear power contact and power contact insulation
JP7006790B2 (en) * 2018-06-25 2022-01-24 株式会社オートネットワーク技術研究所 Terminal
WO2023021979A1 (en) * 2021-08-20 2023-02-23 株式会社オートネットワーク技術研究所 Terminal unit and first terminal

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1674424U (en) * 1954-01-20 1954-04-01 Joachim Jacobowitz PIN FOR ELECTRIC PLUG.
DE1142020B (en) * 1959-06-15 1963-01-03 Hochkoepper & Co P Plug pin for plug with and without protective contact device
DE1615681A1 (en) * 1967-01-27 1970-06-18 Amp Inc Electrical connector pin and method for its manufacture
FR2572595B1 (en) * 1984-10-31 1986-12-12 Radiall Ind QUICK LOCKING AND UNLOCKING COAXIAL CONNECTOR ELEMENTS
US5131855A (en) * 1991-05-29 1992-07-21 Westinghouse Electric Corp. Grounding stud assembly

Also Published As

Publication number Publication date
ES2164285T3 (en) 2002-02-16
DE59705047D1 (en) 2001-11-29
DE29613737U1 (en) 1996-09-19
ATE207658T1 (en) 2001-11-15
EP0823753A1 (en) 1998-02-11

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