EP0647986B1 - Contact pin for plug connections - Google Patents

Contact pin for plug connections Download PDF

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Publication number
EP0647986B1
EP0647986B1 EP94114228A EP94114228A EP0647986B1 EP 0647986 B1 EP0647986 B1 EP 0647986B1 EP 94114228 A EP94114228 A EP 94114228A EP 94114228 A EP94114228 A EP 94114228A EP 0647986 B1 EP0647986 B1 EP 0647986B1
Authority
EP
European Patent Office
Prior art keywords
contact pin
pairs
periphery
noses
receiving opening
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
EP94114228A
Other languages
German (de)
French (fr)
Other versions
EP0647986A1 (en
Inventor
Artur Dipl.-Ing. Wohlfart
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0647986A1 publication Critical patent/EP0647986A1/en
Application granted granted Critical
Publication of EP0647986B1 publication Critical patent/EP0647986B1/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
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/405—Securing in non-demountable manner, e.g. moulding, riveting
    • H01R13/41—Securing in non-demountable manner, e.g. moulding, riveting by frictional grip in grommet, panel or base

Definitions

  • the invention relates to a contact pin for plug connections, which is provided on its circumference with impressions, which are provided at two points in the longitudinal direction of the contact pin one behind the other and each in pairs at two opposite points on the circumference of the contact pin and protruding beyond the circumference of the contact pin Nose pairs are designed, each of which has a contour that rises in the opposite direction to the direction in which the contact pin is inserted, and which can be inserted into a receiving opening of a plastic body and fastened by clamping therein, the impressions being pressed into the inner wall of the receiving opening.
  • Such a contact pin is known from US-A-5,035,656.
  • This contact pin is formed with four pairs of lugs arranged one behind the other, the rear pairs of lugs in the insertion direction being able to have a greater height than the front pairs of lugs.
  • a further contact pin each of which has two barb-like projections lying one behind the other in its longitudinal direction and arranged on opposite edges and which can thus be clampedly fastened in a bore in a circuit board.
  • the invention has for its object to achieve a sufficient tightness with a contact pin of the type mentioned in a reproducible manufacturing process and to ensure the highest possible holding forces.
  • a contact pin of this type is stamped at two adjacent points in the longitudinal direction with two sides stamped on its circumference Nose pairs, that is to say with a total of four pairs of noses, which are attached in a simple manner in a reproducible manufacturing process by means of stamping dies, which push the material of the contact pin outward beyond its original circumference.
  • the pairs of lugs have a contour which rises in the opposite direction to the direction in which the contact pin is inserted, with nose flanks which are inclined at an angle to the longitudinal axis of the contact pin and a steep rear flank.
  • the secure fit of one Contact pin in the receiving opening of a plastic part is additionally improved by that the pairs of noses at one point of the contact pin are offset by 90 ° with respect to the pairs of noses at the other point of the contact pin on the circumference of the contact pin.
  • the contact pin 1a has, for example, a square cross-sectional shape with an edge length of, for example, 0.6 mm and is provided on its circumference with embossments 3, 3 ', 4, 4' at two points lying closely behind one another in the longitudinal direction of the contact pin. These are each attached in pairs at two opposite points on the circumference of the contact pin 1a and are designed as pairs of noses 3, 3 ', 4, 4' projecting beyond the circumference of the contact pin, these pairs of noses each having a contour which increases in the opposite direction to the direction in which the contact pin 1a is inserted exhibit.
  • 1 to 7 accordingly has two pairs of lugs 3 and 3 'at a first point at two mutually opposite points and also at two at a closely adjacent second point mutually opposite points two further pairs of noses 4 and 4 'respectively, the two noses of a pair of noses 3, 3' or 4.4 '- as can be seen particularly clearly from the enlarged illustration in FIGS. 4 and 5 - from above and below are stamped into the contact pin.
  • the pairs of lugs have a contour which rises in the opposite direction to the direction in which the contact pin 1a is inserted, so that they protrude beyond the original circumference of the contact pin with nose flanks 5 inclined obliquely to the longitudinal axis of the contact pin and a steep retaining flank 6 transverse to the longitudinal axis of the contact pin.
  • the rear nose pairs 4, 4 'in the direction of insertion are offset by 90 ° with respect to the front nose pairs 3, 3', the front and rear nose pairs 3, 3 'and 4, 4' being able to have the same height or thereby a different height that the rear pairs of noses 4, 4 'of the contact pin 1 a have a greater height than the front pairs of noses 3, 3', so that the contact pin 1 a at the location of the rear pairs of noses 4, 4 'is opposite the position with the front pairs of noses 3, 3 'has a somewhat larger cross section.
  • a contact pin la is in a receiving opening of a plastic part 2, z. B. inserted into a pin header, in a direction indicated by an arrow 7 insertion. In its end position shown in FIG. 7, the contact pin 1a is then securely anchored in the plastic part 2 in the event of forces occurring in the direction of an arrow 8 (direction of holding force) due to the barbed pairs of noses.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Description

Die Erfindung betrifft einen Kontaktstift für Steckverbindungen, der an seinem Umfang mit Einprägungen versehen ist, die an zwei in Längsrichtung des Kontaktstiftes nahe hintereinanderliegenden Stellen vorgesehen und jeweils paarweise an zwei einander gegenüberliegenden Stellen am Umfang des Kontaktstiftes angebracht und als über den Umfang des Kontaktstiftes hinaus vorstehende Nasenpaare ausgeführt sind, welche jeweils eine zu der Einschieberichtung des Kontaktstiftes entgegengesetzt ansteigende Kontur aufweisen und der in eine Aufnahmeöffnung eines Kunststoffkörpers einschiebbar und darin klemmend befestigbar ist, wobei sich die Einprägungen in die Innenwand der Aufnahmeöffnung eindrücken.The invention relates to a contact pin for plug connections, which is provided on its circumference with impressions, which are provided at two points in the longitudinal direction of the contact pin one behind the other and each in pairs at two opposite points on the circumference of the contact pin and protruding beyond the circumference of the contact pin Nose pairs are designed, each of which has a contour that rises in the opposite direction to the direction in which the contact pin is inserted, and which can be inserted into a receiving opening of a plastic body and fastened by clamping therein, the impressions being pressed into the inner wall of the receiving opening.

Ein derartiger Kontaktstift ist durch die US-A-5,035,656 bekannt. Dieser Kontaktstift ist mit vier hintereinander angeordneten Nasenpaaren ausgebildet, wobei die in Einschieberichtung hinteren Nasenpaare gegenüber den vorderen Nasenpaaren eine größere Höhe aufweisen können.Such a contact pin is known from US-A-5,035,656. This contact pin is formed with four pairs of lugs arranged one behind the other, the rear pairs of lugs in the insertion direction being able to have a greater height than the front pairs of lugs.

Ferner ist durch die GB-A-1,087,422 ein weiterer Kontaktstift bekannt, der je zwei in seiner Längsrichtung hintereinander liegende, an entgegengesetzten Kanten angeordnete widerhakenartige Vorsprünge aufweist und der damit klemmend in einer Bohrung einer Schaltungsplatte befestigbar ist.Also known from GB-A-1,087,422 is a further contact pin, each of which has two barb-like projections lying one behind the other in its longitudinal direction and arranged on opposite edges and which can thus be clampedly fastened in a bore in a circuit board.

Der Erfindung liegt die Aufgabe zugrunde, bei einem Kontaktstift der eingangs genannten Art in einem reproduzierbaren Fertigungsprozeß eine ausreichende Festsitzkraft zu erreichen und dabei möglichst hohe Haltekräfte zu gewährleisten.The invention has for its object to achieve a sufficient tightness with a contact pin of the type mentioned in a reproducible manufacturing process and to ensure the highest possible holding forces.

Diese Aufgabe wird bei einem Kontaktstift der eingangs genannten Art gemäß der Erfindung dadurch gelöst, daß die Nasenpaare an der einen Stelle des Kontaktstiftes um 90° gegenüber den Nasenpaaren an der anderen Stelle des Kontaktstiftes versetzt am Umfang des Kontaktstiftes angebracht sind.This object is achieved with a contact pin of the type mentioned according to the invention in that the pairs of noses are offset at one point on the contact pin by 90 ° relative to the nose pairs at the other point of the contact pin on the circumference of the contact pin.

Ein derartiger Kontaktstift ist an zwei in Längsrichtung nahe benachbarten Stellen mit zweiseitig an seinem Umfang angeprägten Nasenpaaren, also mit insgesamt vier Nasenpaaren, ausgebildet, die in einfacher Weise in einem reproduzierbaren Fertigungsprozeß durch Prägestempel angebracht werden, welche Material des Kontaktstiftes über dessen ursprünglichen Umfang hinaus nach außen drücken. Dabei weisen die Nasenpaare eine zur Einschieberichtung des Kontaktstiftes entgegengesetzt ansteigende Kontur mit zur Längsachse des Kontaktstiftes schräg geneigten Nasenflanken und einer steilen Hinterflanke auf. Dadurch wird beim Einschieben des Kontaktstiftes in die Aufnahmeöffnung eines Kunststoffkörpers der Kunststoff elastisch verdrängt und nicht abgeschabt. Infolge des elastischen Verdrangens des Kunststoffes befindet sich in der Endposition des Kontaktstiftes ausreichend Kunststoffmaterial an der zur Langsachse des Kontaktstiftes quer verlaufenden steilen hinteren Halteflanke der Nasenpaare. Auf diese Weise ist die entgegengesetzt zur Einschieberichtung des Kontaktstiftes gerichtete Haltekraft ausreichend groß. Damit werden sichere Verankerungen von Kontaktstiften in Kunststoffteilen, z.B. in Stiftleisten von Steckverbindungen erreicht, die verhindern, daß die Kontaktstifte beim Aufstecken von Gegensteckern, wie z.B. Kontaktbuchsen, aus dem Kunststoffteil herausbewegt werden. Außerdem wird durch einen derartigen Festsitz eines Kontaktstiftes in der Aufnahmeöffnung eines Kunststoffteiles auch eine wirksame Dichtung der Aufnahmeöffnung gegen bei späteren Bearbeitungsvorgängen gegebenenfalls aufsteigende Mittel, wie z.B. Flußmittel bei Lötvorgängen oder Lackflüssigkeiten, erreicht. Der sichere Sitz eines Kontaktstiftes in der Aufnahmeöffnung eines Kunststoffteiles wird zusätzlich noch dadurch verbessert,
daß die Nasenpaare an der einen Stelle des Kontaktstiftes um 90° gegenüber den Nasenpaaren an der anderen Stelle des Kontaktstiftes versetzt am Umfang des Kontaktstiftes angebracht sind.A contact pin of this type is stamped at two adjacent points in the longitudinal direction with two sides stamped on its circumference Nose pairs, that is to say with a total of four pairs of noses, which are attached in a simple manner in a reproducible manufacturing process by means of stamping dies, which push the material of the contact pin outward beyond its original circumference. The pairs of lugs have a contour which rises in the opposite direction to the direction in which the contact pin is inserted, with nose flanks which are inclined at an angle to the longitudinal axis of the contact pin and a steep rear flank. As a result, when the contact pin is inserted into the receiving opening of a plastic body, the plastic is elastically displaced and is not scraped off. As a result of the elastic displacement of the plastic, there is sufficient plastic material in the end position of the contact pin on the steep rear retaining flank of the pairs of noses which runs transversely to the longitudinal axis of the contact pin. In this way, the holding force directed opposite to the direction of insertion of the contact pin is sufficiently large. This ensures secure anchoring of contact pins in plastic parts, for example in pin strips of plug connections, which prevent the contact pins from being moved out of the plastic part when mating plugs, such as contact sockets, are plugged in. In addition, such a tight fit of a contact pin in the receiving opening of a plastic part also provides an effective sealing of the receiving opening against agents which may rise during later processing operations, such as, for example, flux during soldering processes or paint liquids. The secure fit of one Contact pin in the receiving opening of a plastic part is additionally improved by
that the pairs of noses at one point of the contact pin are offset by 90 ° with respect to the pairs of noses at the other point of the contact pin on the circumference of the contact pin.

Die Erfindung ist im folgenden anhand eines in der Zeichnung dargestellten Ausführungsbeispieles eines Kontaktstiftes naher erläutert. Es zeigen

  • Fig. 1 eine Ausführungsform eines Kontaktstiftes in Seitenansicht,
  • Fig. 2 den Kontaktstift nach Fig. 1 in Draufsicht,
  • Fig. 3 den Kontaktstift im Schnitt C-C nach Fig. 1,
  • Fig. 4 eine Einzelheit Z des Kontaktstiftes nach Fig. 1 in vergrößerter Darstellung,
  • Fig. 5 eine Einzelheit W des Kontaktstiftes nach Fig.2 in vergrößerter Darstellung,
  • Fig. 6 einen Teilbereich eines im Schnitt dargestellten Kunststoffteiles mit einem in eine Aufnahmeöffnung einschiebbaren Kontaktstift und
  • Fig. 7 das Kunststoffteil nach Fig.6 mit einem in seine Endposition eingeschobenen Kontaktstift.
The invention is explained below with reference to an embodiment of a contact pin shown in the drawing. Show it
  • 1 shows an embodiment of a contact pin in side view,
  • 2 is a top view of the contact pin according to FIG. 1,
  • 3 shows the contact pin in section CC according to FIG. 1,
  • 4 shows a detail Z of the contact pin according to FIG. 1 in an enlarged view,
  • 5 shows a detail W of the contact pin according to Figure 2 in an enlarged view,
  • Fig. 6 shows a partial area of a plastic part shown in section with a contact pin which can be inserted into a receiving opening and
  • 7 shows the plastic part according to FIG. 6 with a contact pin inserted into its end position.

Der Kontaktstift 1a hat beispielsweise eine quadratische Querschnittsform mit einer Kantenlange von z.B. 0,6 mm und ist an seinem Umfang an zwei in Langsrichtung des Kontaktstiftes nahe hintereinander liegenden Stellen mit Einprägungen 3, 3', 4, 4' versehen. Diese sind jeweils paarweise an zwei einander gegenüberliegenden Stellen am Umfang des Kontaktstiftes 1a angebracht und als über den Umfang des Kontaktstiftes hinaus vorstehende Nasenpaare 3, 3', 4, 4' ausgeführt, wobei diese Nasenpaare jeweils eine zu der Einschieberichtung des Kontaktstifte 1a entgegengesetzt ansteigende Kontur aufweisen. Der in den Fig.1 bis 7 dargestellte Kontaktstift 1a weist demnach an einer ersten Stelle an zwei einander gegenüberliegenden Stellen jeweils zwei Nasenpaare 3 bzw. 3' und an einer nahe benachbarten zweiten Stelle ebenfalls an zwei einander gegenüberliegenden Stellen jeweils zwei weitere Nasenpaare 4 bzw. 4' auf, wobei die beiden Nasen eines Nasenpaares 3,3' oder 4,4' - wie besonders deutlich aus der vergrößerten Darstellung in den Figuren 4 und 5 erkennbar wird - von oben und unten in den Kontaktstift eingeprägt sind. Die Nasenpaare haben eine zu der Einschieberichtung des Kontaktstiftes 1a entgegengesetzt ansteigende Kontur, so daß sie mit schräg zur Längsachse des Kontaktstiftes geneigten Nasenflanken 5 und einer quer zur Längsachse des Kontaktstiftes hinteren steilen Halteflanke 6 über den ursprünglichen Umfang des Kontaktstiftes hinausragen. Außerdem sind die in Einschieberichtung 7 hinteren Nasenpaare 4,4' um 90° gegenüber den vorderen Nasenpaaren 3, 3' versetzt, wobei die vorderen und hinteren Nasenpaare 3,3' und 4,4' die gleiche Höhe oder dadurch eine unterschiedliche Höhe aufweisen können, daß die hinteren Nasenpaare 4, 4' des Kontaktstiftes 1a eine größere Höhe haben als die vorderen Nasenpaare 3,3', so daß der Kontaktstift la an der Stelle der hinteren Nasenpaare 4,4' einen gegenüber der Stelle mit den vorderen Nasenpaaren 3,3' etwas größeren Querschnitt hat. In Figur 6 wird ein Kontaktstift la in eine Aufnahmeöffnung eines Kunststoffteiles 2, z. B. in eine Stiftleiste, eingeschoben, und zwar in einer durch einen Pfeil 7 gekennzeichneten Einschieberichtung. In seiner in Figur 7 dargestellten Endposition ist der Kontaktstift 1a dann bei in Richtung eines Pfeiles 8 auftretenden Kräften (Haltekraftrichtung) aufgrund der widerhakenartig wirkenden Nasenpaare sicher im Kunststoffteil 2 verankert.The contact pin 1a has, for example, a square cross-sectional shape with an edge length of, for example, 0.6 mm and is provided on its circumference with embossments 3, 3 ', 4, 4' at two points lying closely behind one another in the longitudinal direction of the contact pin. These are each attached in pairs at two opposite points on the circumference of the contact pin 1a and are designed as pairs of noses 3, 3 ', 4, 4' projecting beyond the circumference of the contact pin, these pairs of noses each having a contour which increases in the opposite direction to the direction in which the contact pin 1a is inserted exhibit. The contact pin 1a shown in FIGS. 1 to 7 accordingly has two pairs of lugs 3 and 3 'at a first point at two mutually opposite points and also at two at a closely adjacent second point mutually opposite points two further pairs of noses 4 and 4 'respectively, the two noses of a pair of noses 3, 3' or 4.4 '- as can be seen particularly clearly from the enlarged illustration in FIGS. 4 and 5 - from above and below are stamped into the contact pin. The pairs of lugs have a contour which rises in the opposite direction to the direction in which the contact pin 1a is inserted, so that they protrude beyond the original circumference of the contact pin with nose flanks 5 inclined obliquely to the longitudinal axis of the contact pin and a steep retaining flank 6 transverse to the longitudinal axis of the contact pin. In addition, the rear nose pairs 4, 4 'in the direction of insertion are offset by 90 ° with respect to the front nose pairs 3, 3', the front and rear nose pairs 3, 3 'and 4, 4' being able to have the same height or thereby a different height that the rear pairs of noses 4, 4 'of the contact pin 1 a have a greater height than the front pairs of noses 3, 3', so that the contact pin 1 a at the location of the rear pairs of noses 4, 4 'is opposite the position with the front pairs of noses 3, 3 'has a somewhat larger cross section. In Figure 6, a contact pin la is in a receiving opening of a plastic part 2, z. B. inserted into a pin header, in a direction indicated by an arrow 7 insertion. In its end position shown in FIG. 7, the contact pin 1a is then securely anchored in the plastic part 2 in the event of forces occurring in the direction of an arrow 8 (direction of holding force) due to the barbed pairs of noses.

Claims (2)

  1. Contact pin (la) for plug connections, which is provided on its periphery with embossings (3, 3', 4, 4') which are provided at two points situated closely one behind the other in the longitudinal direction of the contact pin (la) and are in each case provided in pairs at two mutually opposite points on the periphery of the contact pin (la) and are designed as lug pairs (3, 3' and 4, 4') which project beyond the periphery of the contact pin, each have a contour rising in the opposite direction to the insertion direction of the contact pin (la) and can be inserted into a receiving opening of a plastic body (2) and can be secured therein in a clamping manner, the embossings (3, 3', 4, 4') being forced into the inner wall of the receiving opening, characterized in that the lug pairs (4, 4') at one point on the contact pin (la) are provided on the periphery of the contact pin (la) such that they are offset by 90° with respect to the lug pairs (3, 3') at the other point on the contact pin (la).
  2. Contact pin according to Claim 1, characterized in that the lug pairs (4, 4') which are at the rear in the insertion direction have a larger height than the front lug pairs (3, 3').
EP94114228A 1993-09-28 1994-09-09 Contact pin for plug connections Expired - Lifetime EP0647986B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9314676U 1993-09-28
DE9314676U DE9314676U1 (en) 1993-09-28 1993-09-28 Contact pin for plug connections

Publications (2)

Publication Number Publication Date
EP0647986A1 EP0647986A1 (en) 1995-04-12
EP0647986B1 true EP0647986B1 (en) 1996-11-27

Family

ID=6898670

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94114228A Expired - Lifetime EP0647986B1 (en) 1993-09-28 1994-09-09 Contact pin for plug connections

Country Status (3)

Country Link
EP (1) EP0647986B1 (en)
DE (2) DE9314676U1 (en)
ES (1) ES2094607T3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5807142A (en) * 1996-05-10 1998-09-15 Molex Incorporated Electrical connector having terminals with improved retention means
US5692928A (en) * 1996-05-10 1997-12-02 Molex Incorporated Electrical connector having terminals with improved retention means
DE29700452U1 (en) * 1997-01-13 1997-02-27 Framatome Connectors Daut + Rietz GmbH, 90411 Nürnberg Contact pin with opposite anchoring wings and connector element
DE102017111293A1 (en) 2017-05-23 2018-11-29 Te Connectivity Germany Gmbh pin

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL130848C (en) * 1964-02-27
US5035656A (en) * 1990-05-15 1991-07-30 E. I. Du Pont De Nemours And Company Connector, circuit board contact element and retention portion
US5147227A (en) * 1991-10-17 1992-09-15 Amp Incorporated Terminal retention device

Also Published As

Publication number Publication date
ES2094607T3 (en) 1997-01-16
EP0647986A1 (en) 1995-04-12
DE9314676U1 (en) 1994-02-24
DE59401150D1 (en) 1997-01-09

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