EP0641040A2 - Press fit spring contact connector - Google Patents

Press fit spring contact connector Download PDF

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Publication number
EP0641040A2
EP0641040A2 EP94113539A EP94113539A EP0641040A2 EP 0641040 A2 EP0641040 A2 EP 0641040A2 EP 94113539 A EP94113539 A EP 94113539A EP 94113539 A EP94113539 A EP 94113539A EP 0641040 A2 EP0641040 A2 EP 0641040A2
Authority
EP
European Patent Office
Prior art keywords
press
female connector
connector according
contact springs
parts
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
EP94113539A
Other languages
German (de)
French (fr)
Other versions
EP0641040B1 (en
EP0641040A3 (en
Inventor
Georges Ind.-Ing. Embo
Tom Ind.-Ing. Debrouwere
Werner Ind.-Ing. Moyaert
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.)
TE Connectivity Solutions GmbH
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 EP0641040A2 publication Critical patent/EP0641040A2/en
Publication of EP0641040A3 publication Critical patent/EP0641040A3/en
Application granted granted Critical
Publication of EP0641040B1 publication Critical patent/EP0641040B1/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
    • 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
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/712—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit
    • H01R12/716—Coupling device provided on the PCB
    • 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
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/42—Securing in a demountable manner
    • H01R13/436—Securing a plurality of contact members by one locking piece or operation
    • 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
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6581—Shield structure
    • H01R13/6582—Shield structure with resilient means for engaging mating connector
    • 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
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6591—Specific features or arrangements of connection of shield to conductive members
    • H01R13/6594—Specific features or arrangements of connection of shield to conductive members the shield being mounted on a PCB and connected to conductive members

Definitions

  • the invention relates to a press-in female connector for pressing into holes in a printed circuit board, with contact springs each made from a sheet metal strip, each of which consists of a press-in part, a fastening section and a contact part in the direction of travel of the strips, and with a two-part insulating material body in which the contact springs each are individually arranged and attached in chambers.
  • Female connectors in solder-free press-in technology have been known for a long time and are available on the market.
  • Female connectors essentially consist of a number of contact springs, which are accommodated in a plastic body and assembled into a unit. From DE-PS 37 00 304 a contact spring is known which has in its upper region a contact part designed as a double contact, while in its lower region, which is not necessarily only suitable as a press-in contact, is designed in the manner of a contact knife. It is provided to arrange and fasten the known contact spring in a two-part insulating body in a chamber.
  • the contact spring with the outer edges of its central area forming a fastening section is inserted in a clamping manner in the side walls of the chamber surrounding it, the actual locking of the contact spring in the chamber resulting from a second insulating body placed against the shoulders of the fastening section from the press-in part.
  • press-in pressure pieces required for pressing in each look like a nail board.
  • the invention has for its object to improve a press-in female connector of the type mentioned in view of the disadvantages mentioned.
  • Such a press-in female connector can be pressed in very easily without press-in pressure pieces provided with pressure pins by a flat stamp which presses on the outer insulating body as a whole on the contact part side. Because of the construction according to the invention, the press-in force is finally transmitted to the press-in parts via the inner insulating body, the nose and the recess. The nose of the inner insulating material body engaging in the recess is very close and in line with the respective press-in part, so that neither bending moments nor buckling can occur.
  • the press-in female connector according to the invention can therefore be pressed in without risk of damage to the spring contacts. It is ergonomic to use and the pressing-in can be carried out with a single pressing-piece tool, which is extremely simplified compared to the known, multifaceted pressing-in pressure pieces. Integration into an automated press-in process is also easier than before.
  • Embodiments of the invention and an advantageous method for pressing in a press-in spring strip according to the invention are characterized in further claims.
  • the contact springs are arranged in two rows and each, viewed from above, consist of a contact part 1, a middle part, the fastening section, and the lower press-in part 2. Only the lower area of the Fastening section actually the fastening, while its upper region is designed as an elastic zone in the manner described in more detail below.
  • the contact part 1 is advantageously designed in a manner known per se from DE-PS 37 00 304 as a double contact, that is to say as a spring contact with two opposite parallel contact points.
  • the double contacts described serve as sockets for receiving the pin or knife contacts of a connector that matches the female connector.
  • the female connector itself is intended by means of its press-in parts 2 to produce a solderless, electrically and mechanically permanent, but releasable connection with plated-through holes in the one 1 and 4, the contact springs are each arranged in chambers, which in the two-row arrangements shown by a central inner insulating body 4 extending between the two rows and by an outer insulating body 6 are formed, which is pushed like a hat on the contact springs and the inner insulating body 4.
  • the contact springs of the female connectors are provided with a rectangular recess 3 in the central region and cranked in an S-shape.
  • the inner insulating body 4 is designed such that three walls of each of the contact chamber open at the top and bottom are formed for a 2-row female connector version. The chambers are free on the side so that the contact springs can also be inserted in rows.
  • the inner insulating material body 4 is block-shaped in the lower part, so that the fastening section of the contact spring is at least partially guided in the vertical direction as soon as the outer insulating body 6 is pushed on under slight tension after inserting the contact springs into the chambers.
  • a fourth chamber wall is thus also present, the contact spring preferably being held in a clamping manner between the two insulating material parts 4 and 6 by way of an expression 7 in the region of the fastening section.
  • the contact spring preferably being held in a clamping manner between the two insulating material parts 4 and 6 by way of an expression 7 in the region of the fastening section.
  • all walls of the inner insulating body 4 are immersed in the outer insulating body 6.
  • the nose 5 of the inner insulating body 4 fits into the recess 3 of the fastening section.
  • the force transmission actually takes place in a line with the press-in part 2.
  • An analog, equally well-functioning power transmission in the reverse direction also arises for a tensile load that becomes effective when the female connector is pulled out, for example.
  • press-in parts 2 In order to further reduce the risk of buckling when pressing in, it is advantageous to provide the press-in parts 2 in a manner which is already known per se from DE-G 92 136 11 and is designed in its cross-sectional geometry in such a way that for the deformation forces acting during the pressing in the largest possible lever arm is created.
  • a front plate 8 shown in the drawing onto the outer insulating body 6 in a manner known per se, the two insulating parts 4 and 6 being clamped together by means of sheet metal brackets 9 molded onto the front plate 8 .
  • a metallic shielding cage shown in FIG. 4 can be integrated if required.
  • the bent edges of the two identical sheet metal parts 12 are mounted between the front sheet 8 and the insulating material parts 4 and 6 and laterally clamped together.
  • the shield plates 12 extend down to the printed circuit board and, at their end there, analogous to the press-in parts 2, can be designed as pins 13 with elastic geometry, which can later serve as a ground conductor for the printed circuit board or for frame grounding.
  • This new type of press-in means that press-in tools that are individually tailored to the respective last version are no longer required and there is no risk of damaging the female connector.

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  • Coupling Device And Connection With Printed Circuit (AREA)
  • Springs (AREA)

Abstract

In order to be able to push the female connector strip in by means of a flat stamp pressing against it from above, the fastening sections of the contact springs are guided in a clamping manner, parallel to the push-in parts (2), at least in certain areas between an inner insulating material body (4) and an outer insulation material body (6), and the contact springs are povided with in each case one recess (3) in the fastening section, into which recess (3) the inner insulating material body (4) engages, in each case by means of a tab (5), transversely with respect to the push-in parts (2). <IMAGE>

Description

Die Erfindung betrifft eine Einpreß-Federleiste zum Einpressen in Bohrungen einer Leiterplatte, mit jeweils aus einem Blechstreifen hergestellten Kontaktfedern, die in Verlaufsrichtung der Streifen jeweils aus einem Einpreßteil, einem Befestigungsabschnitt und einem Kontaktteil bestehen, und mit einem zweiteiligen Isolierstoffkörper, in dem die Kontaktfedern jeweils einzeln in Kammern angeordnet und befestigt sind.The invention relates to a press-in female connector for pressing into holes in a printed circuit board, with contact springs each made from a sheet metal strip, each of which consists of a press-in part, a fastening section and a contact part in the direction of travel of the strips, and with a two-part insulating material body in which the contact springs each are individually arranged and attached in chambers.

Federleisten in lotfreier Einpreßtechnik sind seit langem bekannt und auf dem Markt erhältlich. Federleisten bestehen im wesentlichen aus einer Anzahl von Kontaktfedern, die in einem Kunststoffkörper aufgenommen und zu einer Einheit zusammengefügt sind. Aus der DE-PS 37 00 304 ist eine Kontaktfeder bekannt, die in ihrem oberen Bereich einen als Doppelkontakt ausgebildeten Kontaktteil aufweist, während sie in ihrem unteren, nicht unbedingt nur als Einpreß-Kontakt geeigneten Bereich kontaktmesserartig ausgebildet ist. Es ist vorgesehen, die bekannte Kontaktfeder in einem zweiteiligen Isolierstoffkörper in einer Kammer anzuordnen und zu befestigen. Dazu wird die Kontaktfeder mit den Außenrändern ihres mittleren, einen Befestigungsabschnitt bildenden Bereiches in Seitenwände der sie umgebenden Kammer klemmend eingelegt, wobei sich die eigentliche Verriegelung der Kontaktfeder in der Kammer durch einen vom Einpreßteil her gegen Schultern des Befestigungsabschnittes gelegten zweiten Isolierstoffkörpers ergibt.Female connectors in solder-free press-in technology have been known for a long time and are available on the market. Female connectors essentially consist of a number of contact springs, which are accommodated in a plastic body and assembled into a unit. From DE-PS 37 00 304 a contact spring is known which has in its upper region a contact part designed as a double contact, while in its lower region, which is not necessarily only suitable as a press-in contact, is designed in the manner of a contact knife. It is provided to arrange and fasten the known contact spring in a two-part insulating body in a chamber. For this purpose, the contact spring with the outer edges of its central area forming a fastening section is inserted in a clamping manner in the side walls of the chamber surrounding it, the actual locking of the contact spring in the chamber resulting from a second insulating body placed against the shoulders of the fastening section from the press-in part.

Das Einpressen derartiger Federleisten in die Bohrungen einer Leiterplatte geschieht bisher in der Weise, daß kontaktteilseitig, ähnlich wie beim Steckverbinden der Federleiste mit einer Messerleiste, jeweils gleichzeitig ein Druckstift in jeden Federkontakt und damit in den Isolierstoffkörper eingesteckt und anschließend Druck ausgeübt wird. Als Anschlag für die zu übertragenden Einpreßkräfte wurden bisher Schultern, Haken oder Ausklinkungen am Federkontakt vorgesehen. Die Einpreßkraft eines Anschlusses in einer Leiterplattenbohrung kann für eine zuverlässige Kontaktierung bis zu 120 N betragen. Die bisherige Einpreßtechnik ist jedoch problematisch, da die unveredelten Druckstifte beim Einpressen in Berührung mit den Kontaktfedern, insbesondere mit deren Federkuppen, gelangen, wobei eine Beschädigung nicht auszuschließen ist. Da hochpolige Federleisten weit überwiegen, sehen die zum Einpressen benötigten Einpreßdruckstücke jeweils etwa wie ein Nagelbrett aus. Bei den Einpreßdruckstücken handelt es sich, unabhängig davon, ob diese in Handpressen oder in Einpreßautomaten eingesetzt werden, angesichts der notwenigen Präzision und der Vielzahl an Typen, die ja jeweils pro Polzahl benötigt werden, um aufwendige und kostenintensive Werkzeuge.The pressing of such female connectors into the holes in a printed circuit board has so far been done in such a way that, on the contact part side, similarly as when the female connector is connected to a male connector, a pressure pin is simultaneously inserted into each spring contact and thus into the insulating body, and pressure is subsequently exerted. To date, shoulders, hooks or notches on the spring contact have been provided as a stop for the press-in forces to be transmitted. The press-in force of a connection in a PCB hole can be up to 120 N for reliable contacting. The previous press-in technique is problematic, however, since the unfinished pressure pins come into contact with the contact springs, in particular with their spring tips, during the pressing process, and damage cannot be ruled out. Since multipole female connectors predominate, the press-in pressure pieces required for pressing in each look like a nail board. The press-in pressure pieces, regardless of whether they are used in hand presses or in press-in machines, are complex and expensive tools, given the required precision and the large number of types that are required per number of poles.

Der Erfindung liegt die Aufgabe zugrunde, eine Einpreß-Federleiste der eingangs genannten Art im Hinblick auf die genannten Nachteile zu verbessern.The invention has for its object to improve a press-in female connector of the type mentioned in view of the disadvantages mentioned.

Diese Aufgabe wird gemäß der Erfindung dadurch gelöst,

  • a) daß die Befestigungsabschnitte mindestens bereichsweise zwischen einem inneren und einem äußeren Isolierstoffkörper parallel zu den Einpreßteilen klemmend geführt sind, und
  • b) daß die Kontaktfedern im Befestigungsabschnitt mit jeweils einer Ausnehmung versehen sind,
  • c) in die quer zu den Einpreßteilen der innere Isolierstoffkörper jeweils mittels einer Nase eingreift.
According to the invention, this object is achieved by
  • a) that the fastening sections at least partially between an inner and an outer insulating body are guided parallel to the press-fit parts, and
  • b) that the contact springs are each provided with a recess in the fastening section,
  • c) engages in the transverse to the press-in parts of the inner insulating material body by means of a nose.

Eine derartige Einpreß-Federleiste kann ohne mit Druckstiften versehene Einpreßdruckstücke sehr einfach durch einen kontaktteilseitig auf den äußeren Isolierstoffkörper als Ganzem drückenden flachen Stempel eingepreßt werden. Aufgrund der erfindungsgemäßen Konstruktion wird dabei die Einpreßkraft über den inneren Isolierstoffkörper, die Nase und die Ausnehmung schließlich auf die Einpreßteile übertragen. Die in die Ausnehmung eingreifende Nase des inneren Isolierstoffkörpers ist dabei sehr nahe und in einer Linie mit dem jeweiligen Einpreßteil angeordnet, so daß weder Biegemomente noch Ausknickungen entstehen können. Die erfindungsgemäße Einpreß-Federleiste ist deshalb ohne Gefahr der Beschädigung der Federkontakte einpreßbar. Sie ist ergonomisch in der Handhabung und das Einpreßen ist mit einem einzigen gegenüber den bekannten, vielgestaltigen Einpreßdruckstücken außerordentlich vereinfachten Druckstück-Werkzeug durchführbar. Auch die Integration in einen automatisierten Einpreßvorgang ist leichter als bisher durchführbar.Such a press-in female connector can be pressed in very easily without press-in pressure pieces provided with pressure pins by a flat stamp which presses on the outer insulating body as a whole on the contact part side. Because of the construction according to the invention, the press-in force is finally transmitted to the press-in parts via the inner insulating body, the nose and the recess. The nose of the inner insulating material body engaging in the recess is very close and in line with the respective press-in part, so that neither bending moments nor buckling can occur. The press-in female connector according to the invention can therefore be pressed in without risk of damage to the spring contacts. It is ergonomic to use and the pressing-in can be carried out with a single pressing-piece tool, which is extremely simplified compared to the known, multifaceted pressing-in pressure pieces. Integration into an automated press-in process is also easier than before.

In weiteren Ansprüchen sind Ausgestaltungen der Erfindung und ein vorteilhaftes Verfahren zum Einpressen einer erfindungsgemäßen Einpreß-Federleiste gekennzeichnet.Embodiments of the invention and an advantageous method for pressing in a press-in spring strip according to the invention are characterized in further claims.

Die Erfindung und weitere Vorteile werden nachfolgend an Ausführungsbeispielen anhand der Zeichnung näher erläutert.The invention and further advantages are explained in more detail below using exemplary embodiments with reference to the drawing.

Es zeigen

FIG 1
in teilweise geschnittener Seitenansicht eine erfindungsgemäße Einpreß-Federleiste,
FIG 2
ebenfalls teilweise geschnitten eine andere Seitenansicht der Federleiste nach FIG 1,
FIG 3
eine Draufsicht auf die Kontaktteilseite einer Federleiste nach FIG 1,
FIG 4
eine teilweise geschnittene Seitenansicht einer weiteren Einpreß-Federleiste.
Show it
FIG. 1
a partially sectioned side view of a press-in female connector according to the invention,
FIG 2
another partially sectioned side view of the female connector according to FIG. 1,
FIG 3
2 shows a top view of the contact part side of a female connector according to FIG. 1,
FIG 4
a partially sectioned side view of another press-in female connector.

Bei den in den FIG 1 bis 4 dargestellten Federleisten sind die Kontaktfedern 2-reihig angeordnet und bestehen jeweils, von oben betrachtet, aus einem Kontaktteil 1, einem mittleren Teil, dem Befestigungsabschnitt, und dem unteren Einpreßteil 2. Dabei dient nur der untere Bereich des Befestigungsabschnitts tatsächlich der Befestigung, während sein oberer Bereich in der im folgenden noch ausführlicher dargestellten Weise als elastische Zone ausgebildet ist. Der Kontaktteil 1 ist vorteilhaft in an sich aus der DE-PS 37 00 304 bekannten Weise als Doppelkontakt, also als Federkontakt mit zwei gegenüberliegenden parallelen Kontaktstellen, ausgebildet.In the female connectors shown in Figures 1 to 4, the contact springs are arranged in two rows and each, viewed from above, consist of a contact part 1, a middle part, the fastening section, and the lower press-in part 2. Only the lower area of the Fastening section actually the fastening, while its upper region is designed as an elastic zone in the manner described in more detail below. The contact part 1 is advantageously designed in a manner known per se from DE-PS 37 00 304 as a double contact, that is to say as a spring contact with two opposite parallel contact points.

Die beschriebenen Doppelkontakte dienen als Buchsen zur Aufnahme der Stift- oder Messerkontakte eines zur Federleiste passenden Steckverbinders. Die Federleiste selbst soll mittels ihrer Einpreßteile 2 die Herstellung einer lötfreien, elektrisch und mechanisch dauerhaften, aber lösbaren Verbindung mit durchkontaktierten Bohrungen einer in der Zeichnung nicht dargestellten Leiterplatte ermöglichen.Wie insbesondere in den Figuren 1 und 4 verdeutlicht, sind die Kontaktfedern jeweils in Kammern angeordnet, die bei den dargestellten 2-reihigen Anordnungen durch einen sich zwischen den beiden Reihen erstreckenden zentralen inneren Isolierstoffkörper 4 und durch einen äußeren Isolierstoffkörper 6 gebildet sind, der hutartig auf die Kontaktfedern und den inneren Isolierstoffkörper 4 aufgeschoben ist.The double contacts described serve as sockets for receiving the pin or knife contacts of a connector that matches the female connector. The female connector itself is intended by means of its press-in parts 2 to produce a solderless, electrically and mechanically permanent, but releasable connection with plated-through holes in the one 1 and 4, the contact springs are each arranged in chambers, which in the two-row arrangements shown by a central inner insulating body 4 extending between the two rows and by an outer insulating body 6 are formed, which is pushed like a hat on the contact springs and the inner insulating body 4.

Die Kontaktfedern der Federleisten sind, wie aus den Figuren 1 und 4 hervorgeht, erfindungsgemäß im mittleren Bereich mit einer rechteckförmigen Ausnehmung 3 versehen und S-förmig gekröpft. Der innere Isolierstoffkörper 4 ist so gestaltet, daß für eine 2-reihige Federleistenversion drei Wände jeder der nach oben und unten offenen Kontaktkammer geformt werden. Seitlich sind die Kammern also frei, so daß die Kontaktfedern eventuell auch reihenweise eingelegt werden können. Der innere Isolierstoffkörper 4 ist im unteren Teil klotzartig ausgebildet, so daß der Befestigungsabschnitt der Kontaktfeder mindestens bereichsweise in Vertikalrichtung klemmend geführt ist, sobald nach Einlegen der Kontaktfedern in die Kammern der äußere Isolierstoffkörper 6 unter leichter Spannung aufgeschoben ist. Mit dem aufgeschobenen äußeren Isolierstoffkörper 6 ist somit auch jeweils eine vierte Kammerwand vorhanden, wobei die Kontaktfeder vorzugsweise über eine Ausprägung 7 im Bereich des Befestigungsabschnitts klemmend zwischen den beiden Isolierstoffteilen 4 und 6 gehalten ist. Um ausreichende Kriechstrecken zu erzeugen, tauchen alle Wände des inneren Isolierstoffkörpers 4 in den äußeren Isolierstoffkörper 6 hinein.As can be seen from FIGS. 1 and 4, the contact springs of the female connectors are provided with a rectangular recess 3 in the central region and cranked in an S-shape. The inner insulating body 4 is designed such that three walls of each of the contact chamber open at the top and bottom are formed for a 2-row female connector version. The chambers are free on the side so that the contact springs can also be inserted in rows. The inner insulating material body 4 is block-shaped in the lower part, so that the fastening section of the contact spring is at least partially guided in the vertical direction as soon as the outer insulating body 6 is pushed on under slight tension after inserting the contact springs into the chambers. With the outer insulating material body 6 pushed on, a fourth chamber wall is thus also present, the contact spring preferably being held in a clamping manner between the two insulating material parts 4 and 6 by way of an expression 7 in the region of the fastening section. In order to generate sufficient creepage distances, all walls of the inner insulating body 4 are immersed in the outer insulating body 6.

Wie in den FIG 1 und 2 dargestellt, paßt die Nase 5 des inneren Isolierstoffkörpers 4 in die Ausnehmung 3 des Befestigungsabschnitts hinein. Um die Länge des Befestigungsabschnitts und damit die Abmessungen der Federleiste insgesamt nicht zu groß werden zu lassen, ist es vorteilhaft, den Befestigungsabschnitt im unteren Teil S-förmig gekröpft vorzusehen. Diese Geometrie ist hinsichtlich der beim Einpressen auftretenden Kraftübertragung an sich nicht erforderlich. Aus FIG 1 ist ersichtlich, daß sich zwischen dem massiven klotzartigen Teil des inneren Isolierstoffkörpers 4 und dem horizontal verlaufenden Bereich des Befestigungsabschnitts ein Luftspalt befindet, so daß die Kraftübertragung tatsächlich nur an der Schnittstelle zwischen der Unterkante der Nase 5 und der Unterkante der Ausnehmung 3 stattfindet. Um Biegekräfte zu vermeiden, erfolgt die Kraftübertragung also tatsächlich in einer Linie mit dem Einpreßteil 2. In diesem Zusammenhang ist es vorteilhaft, die Ausnehmung 3 und insbesondere ihre Unterkante ausreichend groß vorzusehen, um Druckspannungen zu vermeiden. Günstig ist auch, die Nase 5 möglichst nahe am Einpreßteil 2 auszubilden. Eine analoge, gleich gut funktionierende Kraftübertragung in umgekehrter Richtung ergibt sich im übrigen für eine etwa beim Herausziehen der Federleiste wirksam werdende Zugbelastung.As shown in FIGS 1 and 2, the nose 5 of the inner insulating body 4 fits into the recess 3 of the fastening section. In order not to make the length of the fastening section and thus the overall dimensions of the female connector too large, it is advantageous to provide the fastening section cranked in an S-shape in the lower part. This geometry is not necessary per se with regard to the power transmission occurring during the pressing. From Figure 1 it can be seen that there is an air gap between the massive block-like part of the inner insulating body 4 and the horizontally extending region of the fastening section, so that the power transmission actually takes place only at the interface between the lower edge of the nose 5 and the lower edge of the recess 3 . In order to avoid bending forces, the force transmission actually takes place in a line with the press-in part 2. In this context, it is advantageous to provide the recess 3 and in particular its lower edge sufficiently large to avoid compressive stresses. It is also favorable to design the nose 5 as close as possible to the press-in part 2. An analog, equally well-functioning power transmission in the reverse direction also arises for a tensile load that becomes effective when the female connector is pulled out, for example.

Um eine aus Toleranzgründen wünschenswerte federnde Auslenkbarkeit des Kontaktteils quer zur Verlaufsrichtung der Kontaktfeder zu gewährleisten, ist es vorteilhaft, im oberen Bereich des Befestigungsabschnittes, also oberhalb der Ausnehmung 3 und der Einprägung 7, eine an sich bereits aus der DE-PS 34 00 304 bekannte Ausbildung vorzusehen, bei der dieser Bereich nur zwei schmale parallele äußere Stege 11 aufweist. Diese Anordnung bringt eine vorteilhafte Funktionstrennung der Bereiche der Kontaktfeder in einen elastischen oberen Bereich und einen starr fixierten unteren Bereich mit sich.In order to ensure a resilient deflection of the contact part transverse to the direction of the contact spring for reasons of tolerance, it is advantageous in the upper region of the fastening section, i.e. above the recess 3 and the indentation 7, a known per se from DE-PS 34 00 304 To provide training in which this area has only two narrow parallel outer webs 11. This arrangement brings an advantageous separation of functions the areas of the contact spring into an elastic upper area and a rigidly fixed lower area.

Um die Gefahr der Entstehung von Ausknickungen beim Einpressen weiter zu verringern, ist es vorteilhaft, die Einpreßteile 2 in an sich bereits aus dem DE-G 92 136 11 bekannter Weise elastisch und in ihrer Querschnittsgeometrie so ausgebildet vorzusehen, daß für die beim Einpressen einwirkenden Verformungskräfte ein möglichst großer Hebelarm entsteht.In order to further reduce the risk of buckling when pressing in, it is advantageous to provide the press-in parts 2 in a manner which is already known per se from DE-G 92 136 11 and is designed in its cross-sectional geometry in such a way that for the deformation forces acting during the pressing in the largest possible lever arm is created.

Bei Verwendung der erfindungsgemäßen Einpreß-Federleiste als Subminiatur-Steckverbinder ist es vorteilhaft, auf den äußeren Isolierstoffkörper 6 ein in der Zeichnung dargestelltes Vorblech 8 in an sich bekannter Weise aufzuschieben, wobei die beiden Isolierstoffteile 4 und 6 mittels am Vorblech 8 angeformter Blechlaschen 9 zusammengeklammert sind. Zur Erfüllung erhöhter Schirmungsanforderungen ist bei Bedarf ein in FIG 4 dargestellter metallischer Schirmkäfig integrierbar. Dazu werden die umgebogenen Ränder der beiden identischen Blechteile 12 zwischen dem Vorblech 8 und den Isolierstoffteilen 4 und 6 montiert und seitlich miteinander verklammert. Die Schirmbleche 12 reichen bis zur Leiterplatte hinab und können an ihrem dortigen Ende, analog zu den Einpreßteilen 2, als Stifte 13 mit elastischer Geometrie ausgebildet sein, die später als Masseableitung zur Leiterplatte bzw. zur Gestellerdung dienen können.When using the press-in female connector according to the invention as a subminiature connector, it is advantageous to slide a front plate 8 shown in the drawing onto the outer insulating body 6 in a manner known per se, the two insulating parts 4 and 6 being clamped together by means of sheet metal brackets 9 molded onto the front plate 8 . To meet increased shielding requirements, a metallic shielding cage shown in FIG. 4 can be integrated if required. For this purpose, the bent edges of the two identical sheet metal parts 12 are mounted between the front sheet 8 and the insulating material parts 4 and 6 and laterally clamped together. The shield plates 12 extend down to the printed circuit board and, at their end there, analogous to the press-in parts 2, can be designed as pins 13 with elastic geometry, which can later serve as a ground conductor for the printed circuit board or for frame grounding.

Der Einpreßvorgang einer erfindungsgemäßen Federleiste gestaltet sich folgendermaßen:

  • Mit den Spitzen der Einpreßteile 2 werden die Bohrungen in der Leiterplatte gesucht.
  • Ein flacher Stempel drückt auf den äußeren Isolierstoffkörper 6 in Richtung Leiterplatte, und zwar so lange, bis Abstandsfüßchen 10 auf die Leiterplatte anschlagen.
The press-in process of a female connector according to the invention is as follows:
  • With the tips of the press-fit parts 2, the holes in the circuit board are searched for.
  • A flat stamp presses on the outer insulating material body 6 in the direction of the printed circuit board until the spacer feet 10 strike the printed circuit board.

Durch diese neue Art des Einpressens werden keine individuell auf die jeweilige Leistenversion abgestimmte Einpreßwerkzeuge mehr benötigt und es besteht keine Gefahr einer Beschädigung der Federleiste.This new type of press-in means that press-in tools that are individually tailored to the respective last version are no longer required and there is no risk of damaging the female connector.

Claims (11)

Einpreß-Federleiste zum Einpressen in Bohrungen einer Leiterplatte,
mit jeweils aus einem Blechstreifen hergestellten Kontaktfedern, die in Verlaufsrichtung der Streifen jeweils aus einem Einpreßteil (2), einem Befestigungsabschnitt und einem Kontaktteil (1) bestehen, und mit einem zweiteiligen Isolierstoffkörper (4, 6), in dem die Kontaktfedern jeweils einzeln in Kammern angeordnet und befestigt sind,
dadurch gekennzeichnet, a) daß die Befestigungsabschnitte mindestens bereichsweise zwischen einem inneren (4) und einem äußeren (6) Isolierstoffkörper parallel zu den Einpreßteilen (2) klemmend geführt sind, und b) daß die Kontaktfedern im Befestigungsabschnitt mit jeweils einer Ausnehmung (3) versehen sind, c) in die quer zu den Einpreßteilen (2) der innere Isolierstoffkörper (4) jeweils mittels einer Nase (5) eingreift. Press-in female connector for pressing into holes in a printed circuit board,
with contact springs each made from a sheet metal strip, each consisting of a press-in part (2), a fastening section and a contact part (1) in the direction of travel of the strips, and with a two-part insulating material body (4, 6) in which the contact springs are each individually in chambers are arranged and fastened,
characterized, a) that the fastening sections are at least in regions between an inner (4) and an outer (6) insulating body parallel to the press-fit parts (2), and b) that the contact springs in the fastening section are each provided with a recess (3), c) in which the inner insulating body (4) engages transversely to the press-in parts (2) by means of a nose (5). Einpreß-Federleiste nach Anspruch 1,
dadurch gekennzeichnet,
daß die Ausnehmung (3) rechteckförmig ist.Press-in female connector according to claim 1,
characterized,
that the recess (3) is rectangular. Einpreß-Federleiste nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß die Kontaktfedern 2-reihig angeordnet sind, daß der innere Isolierstoffkörper (4) sich als Zentralkörper zwischen den beiden Reihen erstreckt und daß der äußere Isolierstoffkörper (6) hutartig auf die Kontaktfedern und den inneren Isolierstoffkörper (4) aufgeschoben ist.Press-in female connector according to claim 1 or 2,
characterized,
that the contact springs are arranged in two rows, that the inner insulating body (4) extends as a central body between the two rows and that the outer insulating body (6) is pushed like a hat onto the contact springs and the inner insulating body (4). Einpreß-Federleiste nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet,
daß die Kontaktfedern im Kontaktteil (1) als Doppelkontakte ausgebildet sind.Press-in female connector according to one of Claims 1 to 3, characterized in that
that the contact springs in the contact part (1) are designed as double contacts. Einpreß-Federleiste nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet,
daß die Kontaktfedern mittels jeweils einer im Befestigungsabschnitt vorgesehenen Ausprägung (7) klemmend zwischen den beiden Isolierstoffteilen (4, 6) gehalten ist.Press-in female connector according to one of Claims 1 to 4, characterized in that
that the contact springs are held in a clamping manner between the two insulating material parts (4, 6) by means of an expression (7) provided in the fastening section. Einpreß-Federleiste nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet,
daß die Kontaktfedern im Bereich zwischen den Einpreßteilen (2) und den dazu parallel geführten Bereichen der Befestigungsabschnitte jeweils S-förmig gekröpft sind.Press-in female connector according to one of Claims 1 to 5, characterized in that
that the contact springs in the area between the press-in parts (2) and the areas of the fastening sections guided parallel thereto are each cranked in an S-shape. Einpreß-Federleiste nach Anspruch 5 und 6, dadurch gekennzeichnet,
daß die Befestigungsabschnitte der Kontaktfedern jeweils in Reihenfolge der Verlaufsrichtung vom Einpreßteil (2) zum Kontaktteil (1) eine S-förmige Kröpfung, eine Ausnehmung (3), eine Einprägung (7) und einen nur durch zwei schmale parallele äußere Stege gebildeten Bereich (11) aufweisen.Press-in female connector according to claim 5 and 6, characterized in
that the fastening sections of the contact springs each have an S-shaped offset, a recess (3), an indentation (7) and an area (11) formed only by two narrow parallel outer webs, in the order of the direction from the press-in part (2) to the contact part (1) ) exhibit. Einpreß-Federleiste nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet,
daß die Einpreßteile (2) elastisch und in ihrer Querschnittsgeometrie so ausgebildet sind, daß für die beim Einpressen einwirkenden Verformungskräfte ein großer Hebelarm entsteht.Press-in female connector according to one of Claims 1 to 7, characterized in that
that the press-in parts (2) are elastic and are designed in their cross-sectional geometry in such a way that a large lever arm is created for the deformation forces acting during the pressing-in. Einpreß-Federleiste nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet,
daß zur Verwendung als Subminiatur-Steckverbinder auf den äußeren Isolierstoffkörper (6) ein Vorblech (8) aufgeschoben ist, wobei die beiden Isolierstoffteile (4, 6) mittels am Vorblech (8) angeformter Blechlaschen (9) zusammengeklammert sind.Press-in female connector according to one of Claims 1 to 8, characterized in that
that for use as a subminiature plug connector, a front plate (8) is pushed onto the outer insulating body (6), the two insulating parts (4, 6) being clamped together by means of sheet metal brackets (9) molded onto the front plate (8). Einpreß-Federleiste nach Anspruch 9,
dadurch gekennzeichnet,
daß unterhalb des Vorblechs (8) ein bis zur Leiterplatte hinabreichender metallischer Schirmkäfig (12) vorgesehen ist.Press-in female connector according to claim 9,
characterized,
that a metallic screen cage (12) extending down to the printed circuit board is provided below the sheet metal plate (8). Verfahren zum Einpressen einer Einpreß-Federleiste nach einem der Ansprüche 1 bis 10,
dadurch gekennzeichnet,
daß die Spitzen der Einpreßteile (2) auf die Bohrungen einer Leiterplatte aufgesetzt werden, und daß danach mit einem flachen Stempel solange in Richtung Leiterplatte auf den äußeren Isolierstoffkörper (6) gedrückt wird, bis Abstandsfüßchen (10) auf die Leiterplatte anschlagen.Method for pressing in a press-in female connector according to one of Claims 1 to 10,
characterized,
that the tips of the press-fit parts (2) are placed on the holes in a printed circuit board, and that a flat punch is then pressed in the direction of the printed circuit board onto the outer insulating body (6) until spacer feet (10) strike the printed circuit board.
EP94113539A 1993-08-30 1994-08-30 Press fit spring contact connector Expired - Lifetime EP0641040B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4329151 1993-08-30
DE4329151A DE4329151A1 (en) 1993-08-30 1993-08-30 Press-in female connector

Publications (3)

Publication Number Publication Date
EP0641040A2 true EP0641040A2 (en) 1995-03-01
EP0641040A3 EP0641040A3 (en) 1996-12-18
EP0641040B1 EP0641040B1 (en) 2002-02-27

Family

ID=6496353

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94113539A Expired - Lifetime EP0641040B1 (en) 1993-08-30 1994-08-30 Press fit spring contact connector

Country Status (4)

Country Link
US (1) US5470261A (en)
EP (1) EP0641040B1 (en)
AT (1) ATE213877T1 (en)
DE (2) DE4329151A1 (en)

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Publication number Priority date Publication date Assignee Title
DE9415079U1 (en) 1994-09-16 1994-11-17 Siemens AG, 80333 München Press-in female connector
DE19508409C1 (en) * 1995-03-09 1996-05-09 Harting Elektronik Gmbh Multi-contact plug connector e.g. for circuit board
EP0909470B1 (en) * 1996-07-02 2000-01-05 Siemens Aktiengesellschaft Plug connector with screen
JP3462096B2 (en) * 1998-11-05 2003-11-05 住友電装株式会社 Board connector
US6334795B1 (en) * 2000-09-15 2002-01-01 Ching-Yu Lin Structure of a cordless phone plug
TWM250412U (en) * 2003-08-06 2004-11-11 Hon Hai Prec Ind Co Ltd Electrical connector
US9742081B1 (en) * 2016-05-24 2017-08-22 Te Connectivity Corporation Press-fit circuit board connector

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US4127317A (en) * 1976-07-06 1978-11-28 Bunker Ramo Corporation Electrical connectors which may be shortened to provide fewer contacts
DE2950097A1 (en) * 1978-12-25 1980-07-10 Elco International Kk ELECTRICALLY CONDUCTIVE CONNECTING ELEMENT AND INSULATION BODY FOR THIS AND ADAPTED DEVICE FOR YOUR ASSEMBLY
US4735585A (en) * 1987-04-17 1988-04-05 United Stamping And Assembly, Inc. Interplane connector
DE3700304A1 (en) * 1986-01-07 1988-07-21 Siemens Ag Contact spring
US5030140A (en) * 1989-06-27 1991-07-09 Hosiden Electronics Co., Ltd. Electrical connector
US5074030A (en) * 1990-10-31 1991-12-24 Molex Incorporated Press and modular press block for electrical connector application tooling
DE9213611U1 (en) * 1992-10-08 1992-12-03 Siemens AG, 8000 München Contact element for pressing into holes in a circuit board
US5190483A (en) * 1992-02-14 1993-03-02 Amp Incorporated Contact retention

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Publication number Priority date Publication date Assignee Title
DE963345C (en) * 1953-10-01 1957-05-09 Painton & Company Ltd Electrical connector
US4127317A (en) * 1976-07-06 1978-11-28 Bunker Ramo Corporation Electrical connectors which may be shortened to provide fewer contacts
DE2950097A1 (en) * 1978-12-25 1980-07-10 Elco International Kk ELECTRICALLY CONDUCTIVE CONNECTING ELEMENT AND INSULATION BODY FOR THIS AND ADAPTED DEVICE FOR YOUR ASSEMBLY
DE3700304A1 (en) * 1986-01-07 1988-07-21 Siemens Ag Contact spring
US4735585A (en) * 1987-04-17 1988-04-05 United Stamping And Assembly, Inc. Interplane connector
US5030140A (en) * 1989-06-27 1991-07-09 Hosiden Electronics Co., Ltd. Electrical connector
US5074030A (en) * 1990-10-31 1991-12-24 Molex Incorporated Press and modular press block for electrical connector application tooling
US5190483A (en) * 1992-02-14 1993-03-02 Amp Incorporated Contact retention
DE9213611U1 (en) * 1992-10-08 1992-12-03 Siemens AG, 8000 München Contact element for pressing into holes in a circuit board

Also Published As

Publication number Publication date
EP0641040B1 (en) 2002-02-27
EP0641040A3 (en) 1996-12-18
US5470261A (en) 1995-11-28
DE59410058D1 (en) 2002-04-04
ATE213877T1 (en) 2002-03-15
DE4329151A1 (en) 1995-03-09

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