EP0068393B1 - Contact block with spring contacts - Google Patents

Contact block with spring contacts Download PDF

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Publication number
EP0068393B1
EP0068393B1 EP82105433A EP82105433A EP0068393B1 EP 0068393 B1 EP0068393 B1 EP 0068393B1 EP 82105433 A EP82105433 A EP 82105433A EP 82105433 A EP82105433 A EP 82105433A EP 0068393 B1 EP0068393 B1 EP 0068393B1
Authority
EP
European Patent Office
Prior art keywords
contact spring
base plate
housing
contact
strip housing
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
Application number
EP82105433A
Other languages
German (de)
French (fr)
Other versions
EP0068393A1 (en
Inventor
Artur Ing. Grad. 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
Priority to AT82105433T priority Critical patent/ATE18321T1/en
Publication of EP0068393A1 publication Critical patent/EP0068393A1/en
Application granted granted Critical
Publication of EP0068393B1 publication Critical patent/EP0068393B1/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H01R13/112—Resilient sockets forked sockets having two legs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S439/00—Electrical connectors
    • Y10S439/943—Electrical connectors including provision for pressing contact into pcb hole

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Fats And Perfumes (AREA)
  • Multi-Conductor Connections (AREA)

Abstract

A contact spring assembly is constructed of a planar base plate integrally formed with a pair of opposed spring legs upstanding therefrom and a separate pin-like connection part attached to the undersurface of the base plate and extending downwardly therefrom in a direction opposite from the upstanding course of the spring legs. Opposed axial ends of the base plate are formed with planar flange surfaces which extend outwardly from the adjacent ends of the spring legs. A two piece strip housing is formed with upper and lower parts which assemble together to receive the contact spring assembly suitably therein with the flange surfaces of the base plate locked against upward or downward longitudinal movement by virtue of sidewall recesses. When the connection part is pressed into the grid bore of a printed circuit board, the impression force is transferred from the upper part of the strip housing over the flange surfaces to the base plate and from the base plate to the connection part, without stressing the contact spring legs.

Description

Die Erfindung bezieht sich auf eine Kontaktfederleiste entsprechend dem Oberbegriff des Anspruches 1.The invention relates to a contact spring strip according to the preamble of claim 1.

Eine solche Kontaktfederleiste ist aus der US-A-3990768 bekannt. Bei dieser bekannten Kontaktfederleiste ist ein pfostenartiges Anschlußteil einer in dieser Leiste angeordneten Kontaktfeder an seinem dem Kontaktfederteil der Kontaktfeder zugewandten Ende mit einer 90° - Abwinkelung versehen. Diese Abwinkelung ist in einer Ausnehmung zwischen Gehäuseober- und Unterteil der Kontaktfederleiste eingeklemmt. Dadurch werden Torsionsbeanspruchungen, die vor allem dann auftreten, wenn der Anschlußteil als Wrap-Stiel verwendet wird, sicher vom Gehäuse aufgefangen und können sich nicht auf den Kontaktfederteil der Kontaktfeder auswirken. Zum Auffangen der Einpreßkraft beim Eindrücken des Anschluß-teiles in eine Rasterbohrung einer Leiterplatte ist eine solche im Gehäuse fixierte 90°. Abwinkelung des Anschluß-teiles weniger gut geeignet, da die Kraftübertragung auf das Gehäuse dabei unsymmetrisch erfolgt.Such a contact female connector is known from US-A-3990768. In this known contact spring strip, a post-like connecting part of a contact spring arranged in this strip is provided with a 90 ° bend at its end facing the contact spring part of the contact spring. This bend is clamped in a recess between the upper and lower parts of the contact spring strip. As a result, torsional stresses, which occur especially when the connection part is used as a wrap handle, are safely absorbed by the housing and cannot have an effect on the contact spring part of the contact spring. In order to absorb the press-in force when the connection part is pressed into a grid hole in a printed circuit board, such is 90 ° fixed in the housing. Bending of the connecting part is less suitable because the power transmission to the housing is asymmetrical.

Um auf den Anschlußteil einer Kontaktfeder einwirkende Druckkräfte im wesentlichen symmetrisch aufzufangen, wenn der Anschlußteil in die Rasterbohrung einer Leiterplatte eingedrückt wird, ist es aber schon aus der DE-A-2631107 bekannt, eine Kontaktfeder im Bereich zwischen dem Teil der Kontaktfeder, der die Federschenkel aufweist, und dem Anschlußteil mit einem Kragen zu versehen, der sich in der Kontktfederleiste an entsprechend ausgebildeten, quer zur Einführungsrichtung der Kontaktfeder in die Leiste sich erstreckenden Wandteilen der Leiste abstützt und so den Einpreßdruck, für die Kontaktfederschenkel unschädlich, auf die Leiste überträgt. Zwar ist es in diesem Zusammenhang sogar bekannt, den Kragen als gesondertes Teil herzustellen und nachträglich mit der Kontaktfeder zu vereinigen. Anschlußteil und Kontaktfederschenkelteil der Kontaktfeder sind bei dieser bekannten Kontaktfederleiste jedoch einstückig, so daß kein jeweils besonders für das jeweilige Teil optimales Material gewählt werden kann.In order to absorb compressive forces acting on the connecting part of a contact spring essentially symmetrically when the connecting part is pressed into the grid hole of a printed circuit board, it is already known from DE-A-2631107, a contact spring in the area between the part of the contact spring which holds the spring legs has, and to provide the connecting part with a collar, which is supported in the contact spring strip on appropriately designed, transversely to the direction of insertion of the contact spring in the strip extending wall parts of the strip and thus transfers the injection pressure, harmless to the contact spring legs, on the strip. In this context it is indeed known to manufacture the collar as a separate part and to subsequently combine it with the contact spring. Connection part and contact spring leg part of the contact spring are, however, in one piece in this known contact spring strip, so that no material that is particularly optimal for the respective part can be selected.

Eine zweiteilige Kontaktfeder mit zwei Federschenkeln, die an einer quer zur Einsteckrichtung eines Kontaktstiftes oder Kontaktmessers zwischen die Federschenkel ausgerichteten Basisplatte ansetzen und mit einem mit der Bssisplatte verschweißten Anschlußteil der Kontaktfeder ist aus der US-A-3646500 bekannt. Das Anschluß-teil ist dort jedoch ein Blechstreifen, der an der Basisplatte auf der von den Federschenkeln abgewandten Seite flächig anliegt und nicht zum Einpressen in Rasterbohrungen einer Leiterplatte geeignet ist. Jedoch ist der an der Basisplatte anliegende Bereich des An-schlußteiles über die Basisplatte hinaus vergrößert und greift mit dieser Vergrößerung in eine Ausnehmung zwischen zwei Teilen eines Gehäuses ein, in welchem die Kontaktfedern angeordnet sind. Dadurch wird eine solche Kontaktfeder betriebssicher im Gehäuse verriegelt.A two-part contact spring with two spring legs which attach to a base plate oriented transversely to the insertion direction of a contact pin or contact knife between the spring legs and with a connection part of the contact spring welded to the base plate is known from US-A-3646500. The connecting part there is, however, a sheet metal strip which lies flat against the base plate on the side facing away from the spring legs and is not suitable for being pressed into grid holes in a printed circuit board. However, the area of the connecting part which rests on the base plate is enlarged beyond the base plate and, with this enlargement, engages in a recess between two parts of a housing in which the contact springs are arranged. Such a contact spring is locked in a reliable manner in the housing.

Demgegenüber ist es Aufgabe vorliegender Erfindung, eine Kontaktfederleiste der eingangs genannten Art so auszubilden, daß bei zweiteiliger Ausbildung einer jeden Kontaktfeder, die beim Eindrücken der aus der Leiste vorstehenden Abschnitte der Anschlußteile in Rasterbohrungen einer Leiterplatte auftretenden Kräfte betriebssicher auf das Leistengehäuse übertragen werden, ohne daß dadurch der Aufbau von Kontaktfedern und des Leistengehäuses besonders kompliziert wird.In contrast, it is an object of the present invention to design a contact spring strip of the type mentioned in such a way that with two-part design of each contact spring, the forces occurring when the portions of the connecting parts protruding from the strip are pressed into grid holes in a printed circuit board are transmitted to the strip housing in an operationally reliable manner without this makes the construction of contact springs and the strip housing particularly complicated.

Erfindungsgemäß ergibt sich die Lösung dieser Aufgabe durch eine den kennzeichnenden Merkmalen des Anspruches 1 entsprechende Ausbildung einer Kontaktfederleiste.According to the invention, this object is achieved by designing a contact spring strip corresponding to the characterizing features of claim 1.

Auf diese Weise stützt sich der Anschlußteil beim Eindrücken seines aus dem Leistengehäuse vorstehenden Abschnittes in die Rasterbohrung einer Leiterplatte an der Basisplatte und diese mit den Verbreiterungen am Oberteil des Leistengehäuses ab, so daß die Kontaktfederschenkel in keiner Weise durch die beim Eindrücken auftretenden Kräfte beschädigt werden können.In this way, the connecting part is supported when pressing its protruding portion from the strip housing into the grid hole of a circuit board on the base plate and this with the widenings on the upper part of the strip housing, so that the contact spring legs can in no way be damaged by the forces occurring during the pressing .

Eine weitere Ausgestaltung der Erfindung ergibt sich aus den Merkmalen des Unteranspruches.A further embodiment of the invention results from the features of the subclaim.

Dadurch können die Verbreiterungen an der Basisplatte vorteilhaft völlig eben verlaufen, ohne daß durch die an der Basisplatte ansetzende Krümmung der Kontaktfederschenkel der Kontaktfederquerschnitt vergrößert wird.As a result, the widenings on the base plate can advantageously run completely flat, without the contact spring cross section being enlarged by the curvature of the contact spring legs that starts on the base plate.

Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand von drei Figuren noch näher erläutert.An exemplary embodiment of the invention is explained in more detail below with reference to three figures.

Dabei zeigen in schematicher Darstellung und stark ver-größert die

  • Figuren 1 und 2 die Kontaktfeder in Seiten- und Vorderansicht und
  • Figur 3 einen Abschnitt eines geschnitten dargestellten Leistengehäuses mit in Kammern . des Leistengehäuses angeordneten Kontaktfedern.
The show in a schematic representation and greatly enlarged
  • Figures 1 and 2, the contact spring in side and front view
  • Figure 3 shows a section of a strip housing shown in section with in chambers. of the strip housing arranged contact springs.

Im einzelnen ist den Figuren zu entnehmen, daß sich die Kontaktfeder 1 aus einem Kontaktfederteil 2 und einem Anschlußteil 3 zusammensetzt. Der Kontaktfederteil 2 besteht aus einer ebenen Basisplatte 4, die quer zum Verlauf der Kontaktfeder 1 angeordnet ist. An einander gegenüberliegenden Rändern der Basisplatte 4 setzen einstückig mit der Basisplatte 4 zusammenhängende Kontaktfederschenkel 5 an, die an ihren freien Enden Kontakte 6 tragen, zwischen die ein Kontaktstift oder ein Kontaktmesser eingeschoben werden kann (nicht dargestellt). Beidseits der Kontaktfederschenkel 5 ist die Basisplatte 4 mit Verbreiterungen 7 versehen, die beim Einsetzen der Kontaktfeder 1 in die Kammern 8 des aus Kunststoff bestehenden Leistengehäuses 9 in Ausnehmungen 10 passen, die in Verlaufsrichtung einer in eine Kammer 8 eingesetzten Kontaktfeder durch Abstützwände 11 von Ober- bzw. Unterteil 12, 13 des Leistengehäuses 9 begrenzt sind. Die Abstützwand 11 am Oberteil 12 des Leistengehäuses 9 wird dabei vorteilhaft durch das dem Unterteil 13 des Leistengehäuses 9 zugewandte Ende einer ins Innere einer Kammer 8 vorstehenden Gehäuserippe 14 gebildet, die zur Voröffnung bzw. Zentrierung der Kontakte 6 der Kontäktfederschenket 5 vorgesehen ist. Zwischen der Rippe 14 und hierzu rechtwinklig verlaufenden Wänden 15 einer Kammer 8 werden nämlich Nuten 16 gebildet, die endseitige Ansätze 17 der Kontäktfederschenkel 5 aufnehmen.In detail, it can be seen from the figures that the contact spring 1 is composed of a contact spring part 2 and a connecting part 3. The contact spring part 2 consists of a flat base plate 4, which is arranged transversely to the course of the contact spring 1. At mutually opposite edges of the base plate 4 there are integral contact spring legs 5, which carry contacts 6 at their free ends, between which a contact pin or a contact knife can be inserted (not shown). On both sides of the contact spring legs 5, the base plate 4 is provided with widenings 7 which, when the contact spring 1 is inserted into the chambers 8 of the strip housing 9 made of plastic Recesses 10 fit, which are delimited in the direction of a contact spring inserted into a chamber 8 by support walls 11 of the upper and lower part 12, 13 of the strip housing 9. The support wall 11 on the upper part 12 of the strip housing 9 is advantageously formed by the lower part 13 of the strip housing 9 facing the end of a housing rib 14 projecting into the interior of a chamber 8, which is provided for the opening or centering of the contacts 6 of the spring contact chain 5. That is, grooves 16 are formed between the rib 14 and the walls 15 of a chamber 8 running at right angles thereto, which receive end approaches 17 of the contact spring legs 5.

Auf der vom Kontaktfederteil 2 abgewandten Seite der Basisplatte 4 ist der pfostenartige Anschlußteil 3 mit der Basisplatte 4 stumpf verschweißt. Der Anschlußteil 3 steht dabei von der Mitte der Basisplatte 4 in Achsrichtung der Kontaktfeder 1 ab.On the side of the base plate 4 facing away from the contact spring part 2, the post-like connection part 3 is butt welded to the base plate 4. The connecting part 3 protrudes from the center of the base plate 4 in the axial direction of the contact spring 1.

In einem Abschnitt 18, der sich nach dem Eindrücken des Anschlußteiles 3 innerhalb der Rasterbohrung einer Leiterplatte befindet, ist der Anschlußteil 3 durch Spalten und Auseinanderdrücken der durch die Spaltung erhaltenen Schenkel im Querschnitt vergrößert. Die beiden Schenkel im Abschnitt 18 des Anschlußteiles 3 können beim Eindrücken des Anschlußteiles 3 in die Rasterbohrung einer Leiterplatte elastisch gegeneinander gedrückt werden und sorgen auf diese Weise für eine gute Kontaktgabe zwischen Anschlußteil 3 und der metallisierten Wand einer Rasterbohrung der Leiterplatte.In a section 18, which is located within the grid hole of a printed circuit board after the connection part 3 has been pressed in, the connection part 3 is enlarged in cross section by splitting and pressing apart the legs obtained by the splitting. The two legs in section 18 of the connection part 3 can be pressed elastically against each other when the connection part 3 is pressed into the grid bore of a printed circuit board and in this way ensure good contact between the connection part 3 and the metallized wall of a grid bore of the printed circuit board.

Wie Figur 3 zu entnehmen ist, stützen sich die Verbreiterungen 7 der Basisplatte 4 an den Abstützwänden 11 der Gehäuserippen 14 des Gehäuseoberteiles 12 ab und sorgen dadurch für eine sichere Übertragung der Einpreßkraft vom Oberteil 12 auf den Anschlußteil 3 einer Kontaktfeder.As can be seen in FIG. 3, the widenings 7 of the base plate 4 are supported on the support walls 11 of the housing ribs 14 of the upper housing part 12 and thereby ensure a reliable transmission of the press-in force from the upper part 12 to the connecting part 3 of a contact spring.

Insbesondere aus Figur 1 ist noch zu ersehen, daß durch Freischnitte zwischen den Kontaktfederschenkeln 5 und den Verbreiterungen 7 im Bereich der gekrümmten, an der Basisplatte ansetzenden Abschnitte der Kontaktfederschenkel 5 eine ebene Ausbildung der Verbreiterungen 7 ermöglicht wird, ohne daß dadurch der Querschnitt der Kontaktfeder vergrößert wird.It can be seen in particular from FIG. 1 that through cuts between the contact spring legs 5 and the widenings 7 in the region of the curved sections of the contact spring legs 5 that attach to the base plate, a flat design of the widenings 7 is made possible without thereby increasing the cross section of the contact spring becomes.

BezugszeichenlisteReference symbol list

  • 1 Kontaktfeder1 contact spring
  • 2 Kontaktfederteil2 contact spring part
  • 3 Anschlußteil3 connecting part
  • 4 Basisplatte4 base plate
  • 5 Kontaktfederschenkel5 contact spring legs
  • 6 Kontaktfederkontakte6 contact spring contacts
  • 7 Verbreiterungen der Basisplatte7 extensions of the base plate
  • 8 Kammer im Leistengehäuse8 chamber in the strip housing
  • 9 Leistengehäuse9 strip housing
  • 10 Ausnehmung im Leistengehäuse 910 recess in the strip housing 9
  • 11 Abstützwände11 support walls
  • 12 Oberteil des Leistengehäuses12 Upper part of the strip housing
  • 13 Unterteil des Leistengehäuses13 lower part of the strip housing
  • 14 Gehäuserippe14 housing ribs
  • 15 Seitenwand einer Kammer15 side wall of a chamber
  • 16 Gehäusenut16 housing groove
  • 17 endseitige Kontaktfederschenkelansätze17 end contact spring leg approaches
  • 18 Abschnitt vergrößerten Querschnittes eines Anschlußteiles18 section enlarged cross section of a connecting part
  • 19 Freischnitt19 free cut

Claims (2)

1. A contact spring block of synthatic raain material having open-ended chambers (8) extending between a front and a rear side thereof for receiving contact springs (1) which comprise a contact spring componant (2) and a terminal component (3), an and section of the terminal component (3) projecting from the rear of the strip housing (8) and the contact spring componant (2) and the post-like terminal component (3) representing separately produced components which are welded together and of which at least one can be locked on a course parallel to that of the contact springs (1) by means of at least one correspondingly designed projection in a recess of the strip housing (9), the strip housing (9) comprising two interlocking housing halves (12,13). the upper part of the housing (12) having ribs (14) which project into the chambers (8) and wh;ih serve to support projections (17) on the contact spring flanks (5), charactarised in that the contact spring flanks (5) depend from opposite edges of a flat bese plate (4) which is arranged transversaly to the contact springs (1), in that on either side of the contact spring flanks (5) the base plate (4) is provided with braoder portions (7) which form the projections of the contact springs (1) supported in the strip housing (9), in that on that side of the base plate (4) which faces away from the contact spring flanks (5) the post-like terminal component (3) is butt-welded in the centre thereof. and finally in that broader portions (7) of the base plate (4) rest against supporting walls (11) of the upper part (12) of the strip housing (9) which are formed by ends of the ribs (14) facing towards the lower part (13) of the strip housing (9).
2. A contact spring block as claimad in claim 1. characterised in that the contact spring flanks (5) have a section (19) which is cut away in relation to the broader portions (7) of the base plate (4).
EP82105433A 1981-06-23 1982-06-21 Contact block with spring contacts Expired EP0068393B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82105433T ATE18321T1 (en) 1981-06-23 1982-06-21 CONTACT STRIP.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8118274U DE8118274U1 (en) 1981-06-23 1981-06-23 Contact spring
DE8118274U 1981-06-23

Publications (2)

Publication Number Publication Date
EP0068393A1 EP0068393A1 (en) 1983-01-05
EP0068393B1 true EP0068393B1 (en) 1986-02-26

Family

ID=6728706

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82105433A Expired EP0068393B1 (en) 1981-06-23 1982-06-21 Contact block with spring contacts

Country Status (7)

Country Link
US (1) US4534611A (en)
EP (1) EP0068393B1 (en)
JP (1) JPS5918834B2 (en)
AT (1) ATE18321T1 (en)
BR (1) BR8203635A (en)
DE (2) DE8118274U1 (en)
PT (1) PT75102B (en)

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Also Published As

Publication number Publication date
PT75102A (en) 1982-07-01
DE3269351D1 (en) 1986-04-03
JPS5918834B2 (en) 1984-05-01
DE8118274U1 (en) 1981-10-22
PT75102B (en) 1984-02-17
JPS585982A (en) 1983-01-13
US4534611A (en) 1985-08-13
EP0068393A1 (en) 1983-01-05
ATE18321T1 (en) 1986-03-15
BR8203635A (en) 1983-06-14

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