EP0040783A1 - Contact spring for flat cable connection - Google Patents

Contact spring for flat cable connection Download PDF

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Publication number
EP0040783A1
EP0040783A1 EP81103803A EP81103803A EP0040783A1 EP 0040783 A1 EP0040783 A1 EP 0040783A1 EP 81103803 A EP81103803 A EP 81103803A EP 81103803 A EP81103803 A EP 81103803A EP 0040783 A1 EP0040783 A1 EP 0040783A1
Authority
EP
European Patent Office
Prior art keywords
contact spring
contact
rigid plate
leg
base part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP81103803A
Other languages
German (de)
French (fr)
Other versions
EP0040783B1 (en
Inventor
Josef Ing.Grad. Heft
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 AT81103803T priority Critical patent/ATE9048T1/en
Publication of EP0040783A1 publication Critical patent/EP0040783A1/en
Application granted granted Critical
Publication of EP0040783B1 publication Critical patent/EP0040783B1/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
    • H01R13/113—Resilient sockets co-operating with pins or blades having a rectangular transverse section
    • 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
    • H01R12/77—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures
    • 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
    • H01R13/422—Securing in resilient one-piece base or case, e.g. by friction; One-piece base or case formed with resilient locking means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
    • H01R4/242—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members being plates having a single slot

Definitions

  • the invention relates to a contact spring for ribbon cable connection with a U-shaped base part and two protruding at right angles from the U-legs of the base part, together forming a contact spring contact for a contact pin or a contact blade contact spring legs, which are in a channel-like cavity of a contact spring strip with transverse to the course of the cavity-directed base part and with the contact spring legs can be used in advance and with one of the two U-legs of the base part opposite to the course of the contact spring legs, protruding from the contact spring strip and forming an insulation displacement contact for a wire-shaped contact contact pair, according to patent 26 07 693.
  • Such a contact spring is known from DE-PS 26 07 693.
  • the object of the present invention is therefore to develop a contact spring of the type mentioned in such a way that it can still be arranged in a reliable manner in the cavity of a contact spring strip with a simple construction, even if the contact grid between the individual contact springs of the strip only allows relatively small distances.
  • this object is achieved in that the U-legs of the base part are of unequal length, that the contact spring leg protruding from the longer U-leg is designed as a rigid plate with a width corresponding to the length of the U-leg and that resilient contact spring leg protruding from the shorter U-leg has a width which is less than half the width of the rigid plate, that the resilient contact spring leg is arranged approximately centrally to the rigid plate, and at its free end with one of the free end of the U- Leg directed away, but set back from the edge of the rigid plate, the contact spring leg widened approach is provided.
  • This design of the contact spring ensures, despite the relatively shorter design of the U-legs, a safe transmission of the forces which occur when contacting a ribbon cable single-cell conductor to the contact spring strip, because in particular the portion of the rigid plate lying outside the projection of the resilient contact spring leg uncomplicatedly corresponds to this portion dimensioned pocket of the contact spring strip can be inserted and thereby a stable positive connection between the contact spring and the strip housing is made possible.
  • a free cut is provided between the part of the longer U-leg which runs curved at the root and the rigid plate, as a result of which the rigid plate can be made flat in maximum width, since it does not work because of the connection area between the two U's -Legs of the base part curved course of the U-legs must also be curved in this area; that the rigid plate has an incision at its free end for separating a flat portion lying essentially outside the projection of the resilient contact spring leg on the rigid plate and a part interacting with the resilient contact spring leg, which is bent towards the end at the other end, whereby at least on free end of the portion of the rigid plate which interacts with the resilient contact spring leg, a section suitable for contacting with a contact pin or contact knife is created to form an insertion funnel.
  • the flat portion of the rigid plate is provided with wart-like projections and that the contact slot, which is limited by the contact cutting edges and forms the insulation displacement contact, is offset with respect to the contact spring contact formed by the contact spring legs.
  • the transverse offset of the contact slot in relation to the contact gap of the contact spring makes it possible to implement a rectangular contact grid on the side of the contact spring leg contacts, because if e.g. the degree of dislocation, equal to a quarter of the grid spacing of this contact grid, and the contact springs arranged in two rows with contact spring legs interchanged in one row with the contact springs of the other row, the contact spring strip naturally having to be designed in such a way that it accommodates the partial area of the Rigid plate provided housing-side pockets are each in the right place, the contact slots of corresponding contact springs of the two rows are shifted to one side by a quarter of the pitch on one side and by a quarter of the pitch to the other side of the other contact spring , so that for a ribbon cable with half the pitch of the contact spring contacts formed by the contact spring legs of the contact springs adjacent individual conductors, only a single conductor is detected by a contact slot of a contact spring.
  • the contact spring made of flat material has a U-shaped base part 2. whose U-legs 30, 31 are directed at right angles to the insertion direction of a contact knife or contact pin, which or which is to be connected to the contact spring.
  • the two U-legs. 30, 31 of the base part 2 are of unequal length and the longer U-leg 30 merges in the direction of insertion of a contact knife or contact pin into a contact spring leg designed as a rigid plate 3a, the width of which corresponds to the length of the U-leg 30 corresponds.
  • a cutout 35 is provided between the base part 2 and the plate 3a, which separates the curved region of the U-leg 30 from the plate 3a.
  • the U-leg 30 has two contact cutting edges 16 which delimit a contact slot 17 between them, into which a wire-shaped conductor with a course directed transversely to the slot 17 can be pressed.
  • the contact cutting edges 16 resiliently lay against the conductor and connect it to the contact spring.
  • the crosspiece 41 of the base part 2 is formed on the side of the pair of contact blades 16, i.e. on the side facing away from the contact spring legs, wider than the shorter U-leg 31. With this widened crosspiece 41, the contact spring can be supported in the insertion direction on a cover closing the contact spring strip cavities, which after Inserting the contact springs is connected to the contact strip.
  • the other shorter U-leg 31 of the base part 2 is in one piece with a spring-elastic contact spring leg 3b, the width of which is less than half the width of the plate 3a.
  • the contact spring leg 3b is arranged approximately centrally to the plate 3a.
  • the contact spring leg 3b At its free end 32, the contact spring leg 3b has a projection 34 which widens the contact spring leg 3b on one side and runs opposite to the U-leg 31, but does not extend to the edge of the rigid plate 3a.
  • the incision 37 also makes it possible to let the partial area 38 of the contact spring leg 3a run completely flat, so that it can be inserted into a suitably designed housing pocket (FIG. 3) 42 of the contact spring strip 43.
  • the wart-like projections 40 provided in the partial area 38 press into the plastic mass of the strip 43 and thus fix the contact spring inserted into the strip housing so that it cannot fall out of the housing again.
  • the pocket 42 is closed at the top, that is to say in FIG. 3 toward the viewer, so that a stop is formed when the contact spring is inserted into an associated cavity of the contact spring strip with the contact spring legs 3a and 3b in advance.
  • the resilient contact spring leg 3b since the resilient contact spring leg 3b does not protrude as far as the rigid plate 3a, the resilient leg 3b always remains movable, in other words, digging the free end 32 of the resilient leg 3b into the plastic mass of the contact spring strip is thereby reliably prevented .
  • Pocket wall 44 (FIG. 3) advantageously also serves for the pre-centering and pre-opening of the contact spring leg 3 b, which is supported on this wall 44. In this way, the force required for inserting a contact knife or contact pin is reduced and the risk of rear insertion, ie the missing of the space between rigid plate 3a and contact spring leg 3b, is substantially reduced by a contact knife or contact pin.
  • the U-shaped base part together with the contact spring leg 3a designed as a rigid plate, forms a rigid part of the contact spring which is enclosed by walls of the strip housing and which fully guarantees the reliable position of the contact spring in the cavity of the strip housing 43 facing it .
  • the contact slot 17 for receiving a single conductor is transversely offset from the contact spring contact 4 formed by the portion 39 and the contact spring leg 3b.
  • This transverse offset which e.g. a quarter of the grid spacing of the contact pins or contact knives from each other, which are to be connected to the contact springs of the strip, enables a single conductor of a ribbon cable to be detected by only one contact slot 17, that is to say only by one contact spring, if one in the case of a two-row arrangement of the contact springs in the strip housing, the contact springs of the one row with contact spring legs 3a, 3b which are interchanged with the contact springs of the other row are arranged, the cavities for receiving the contact springs of course having to be designed in a corresponding manner.

Landscapes

  • Multi-Conductor Connections (AREA)
  • Insulated Conductors (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Contacts (AREA)
  • Cable Accessories (AREA)

Abstract

1. A contact spring for a flat cable connection comprising a U-shaped base part (2) and two contact spring arms (3a, 3b) which project at right angles from the arms of the U (30, 31) of the base part and together form a contact spring contact (4) for a contact pin or contact blade, and which can be inserted into a channel-like cavity of a contact spring strip with the base part being arranged transversely to the course of the cavity with the contact spring arms leading ; and having a pair of contact blades (16) which project from one of the two arms of the U of the base part in opposition to the course of the contact spring arms and which protrude from the contact spring strip and form a cutting clamping contact for a wire-form conductor, characterised in that the arms of the U (30, 31) of the base part (2) are so dimensioned as to have different lengths ; that the contact spring arm which protrudes from the longer arm (30) of the U is formed as a rigid plate (3a) having a width which corresponds to the length of the arm (30) of the U ; and that the springy contact spring arm (3b) which projects from the shorter arm (31) of the U has a width which is less than half the width of the rigid plate (3a) ; that, furthermore, the springy contact spring arm (3b) is arranged approximately centrally with respect to the rigid plate (3a), and at its free end (32) is provided with an attachment (34) which is directed away from the free end (33) of the arm of the U (30, 31), but set back in relation to the edge of the rigid plate (3a), and which widens the contact spring arm (3b) at one side ; and that at its free end (36), the rigid plate (3a) has an incision (37) separating a flat part-region (38), which essentially lies outside the projection of the springy contact spring arm (3b) on to the rigid plate (3a), and another part-region (39) which cooperates with the springy contact spring arm (3b) and is bent in towards the latter at its end.

Description

Die Erfindung bezieht sich auf eine Kontaktfeder für Bandkabelanschluß mit einem U-förmigen Basisteil und zwei von den U-Schenkeln des Basisteiles rechtwinklig abstehenden, gemeinsam einen Kontaktfederkontakt für einen Kontaktstift oder ein Kontaktmesser bildenden Kontaktfederschenkeln, die in einen kanalartigen Hohlraum einer Kontaktfederleiste mit quer zum Verlauf des Hohlraumes gerichtetem Basisteil und mit den Kontaktfederschenkeln voraus einsetzbar ist und mit einem von einem der beiden U-Schenkel des Basisteiles entgegengesetzt zum Verlauf der Kontaktfederschenkel abstehenden, aus der Kontaktfederleiste vorstehenden, einen Schneid-Klemmkontakt für einen drahtförmigen Leiter bildenden Kontaktschneidenpaar, entsprechend Patent 26 07 693.The invention relates to a contact spring for ribbon cable connection with a U-shaped base part and two protruding at right angles from the U-legs of the base part, together forming a contact spring contact for a contact pin or a contact blade contact spring legs, which are in a channel-like cavity of a contact spring strip with transverse to the course of the cavity-directed base part and with the contact spring legs can be used in advance and with one of the two U-legs of the base part opposite to the course of the contact spring legs, protruding from the contact spring strip and forming an insulation displacement contact for a wire-shaped contact contact pair, according to patent 26 07 693.

Eine derartige Kontaktfeder ist aus der DE-PS 26 07 693 bekannt.Such a contact spring is known from DE-PS 26 07 693.

Um bei dieser Kontaktfeder einen sicheren Sitz-der Kontaktfeder in dem Hohlraum einer Kontaktfederleiste zu gewährleisten, ist es erforderlich, die U-Schenkel des Basisteiles relativ lang zu bemessen. Daher ist diese Kontaktfeder für eine AnschluBtechnik, bei der die Abstände der Einzelleiter eines Bandkabels voneinander relativ gering bemessen sind, weniger geeignet.In order to ensure a secure fit of the contact spring in the cavity of a contact spring strip with this contact spring, it is necessary to dimension the U-legs of the base part relatively long. This contact spring is therefore less suitable for a connection technique in which the distances between the individual conductors of a ribbon cable are relatively small.

Aufgabe vorliegender Erfindung ist es daher, eine Kontaktfeder der eingangs genannten Art so weiterzubilden, daß sie bei fertigungstechnisch einfachem Aufbau dennoch betriebssicher in dem Hohlraum einer Kontaktfederleiste angeordnet werden kann, auch wenn das Kontaktraster zwischen den einzelnen Kontaktfedern der Leiste nur relativ kleine-Abstände zuläßt.The object of the present invention is therefore to develop a contact spring of the type mentioned in such a way that it can still be arranged in a reliable manner in the cavity of a contact spring strip with a simple construction, even if the contact grid between the individual contact springs of the strip only allows relatively small distances.

Erfindungsgemäß ergibt sich die Lösung dieser Aufgabe dadurch, daß die U-Schenkel des Basisteiles ungleich lang bemessen sind, daß der von dem längeren U-Schenkel abstehende Kontaktfederschenkel als starre Platte mit einer der Länge des U-Schenkels entsprechenden Breite ausgebildet ist und daß der von dem kürzeren U-Schenkel abstehende federnde Kontaktfederschenkel eine Breite aufweist, die weniger als die Hälfte der Breite der starren Platte beträgt, daß der federnde Kontaktfederschenkel etwa mittig zur starren Platte angeordnet ist, und an seinem freien Ende mit einem von dem freien Ende der U-Schenkel weg gerichteten, gegenüber dem Rand der starren Platte jedoch zurückgesetzten, den Kontaktfederschenkel einseitig verbreiterten Ansatz versehen ist.According to the invention this object is achieved in that the U-legs of the base part are of unequal length, that the contact spring leg protruding from the longer U-leg is designed as a rigid plate with a width corresponding to the length of the U-leg and that resilient contact spring leg protruding from the shorter U-leg has a width which is less than half the width of the rigid plate, that the resilient contact spring leg is arranged approximately centrally to the rigid plate, and at its free end with one of the free end of the U- Leg directed away, but set back from the edge of the rigid plate, the contact spring leg widened approach is provided.

Durch diese Ausbildung der Kontaktfeder wird trotz relativ kürzerer Ausbildung der U-Schenkel eine sichere Übertragung der bei der Kontaktierung eines Bandkabeleinzelleiters auftretenden Kräfte auf die Kontaktfederleiste gewährleistet, weil insbesondere der außerhalb der Projektion des federnden Kontaktfederschenkels liegende Teilbereich der starren Platte unkompliziert in eine diesem Teilbereich entsprechend bemessene Tasche der Kontaktfederleiste eingeschoben werden kann und dadurch ein stabiler Formschluß zwischen der Kontaktfeder und dem Leistengehäuse ermoglicht wird.This design of the contact spring ensures, despite the relatively shorter design of the U-legs, a safe transmission of the forces which occur when contacting a ribbon cable single-cell conductor to the contact spring strip, because in particular the portion of the rigid plate lying outside the projection of the resilient contact spring leg uncomplicatedly corresponds to this portion dimensioned pocket of the contact spring strip can be inserted and thereby a stable positive connection between the contact spring and the strip housing is made possible.

Weitere Ausgestaltungen der Erfindung sehen vor, daß zwischen dem wurzelseitig gekrümmt verlaufenden Teil des längeren U-Schenkels und der starren Platte ein Freischnitt vorgesehen ist, wodurch die starre Platte in maximaler Breite eben ausgebildet werden kann, da siennn nicht wegen des im Verbindungsbereich der beiden U-Schenkel des Basisteiles gekrümmten Verlaufs der U-Schenkel ebenfalls in diesem Bereich gekrümmt verlaufen muß; daß die starre Platte an ihrem freien Ende einen Einschnitt zur Trennung eines flachen im wesentlichen außerhalb der Projektion des federnden Kontaktfederschenkels auf die starre Platte liegenden Teilbereiches und eines mit dem federnden Kontaktfederschenkel zusammenwirkenden, endseitig in Richtung zu diesem gebogenen, anderen Teilbereich aufweist, wodurch zumindest am freien Ende des mit dem federnden Kontaktfederschenkel zusammenwirkenden Teilbereichs der starren Platte ein für dje Kontaktgabe mit einem Kontaktstift oder Kontaktmesser geeigneter Abschnitt unter Bildung eines Einführungstrichters geschaffen wird.Further refinements of the invention provide that a free cut is provided between the part of the longer U-leg which runs curved at the root and the rigid plate, as a result of which the rigid plate can be made flat in maximum width, since it does not work because of the connection area between the two U's -Legs of the base part curved course of the U-legs must also be curved in this area; that the rigid plate has an incision at its free end for separating a flat portion lying essentially outside the projection of the resilient contact spring leg on the rigid plate and a part interacting with the resilient contact spring leg, which is bent towards the end at the other end, whereby at least on free end of the portion of the rigid plate which interacts with the resilient contact spring leg, a section suitable for contacting with a contact pin or contact knife is created to form an insertion funnel.

Schließlich kann im Rahmen vorliegender Erfindung noch vorgesehen sein, daß der flache Teilbereich der starren Platte mit warzenähnlichen Vorsprüngen versehen ist und daß der von den Kontaktschneiden begrenzte, den Schneid-Klemmkontakt bildende Kontaktschlitz gegenüber dem von den Kontakt federschenkeln gebildeten Kontaktfederkontakt querversetzt ist.Finally, it can be provided in the context of the present invention that the flat portion of the rigid plate is provided with wart-like projections and that the contact slot, which is limited by the contact cutting edges and forms the insulation displacement contact, is offset with respect to the contact spring contact formed by the contact spring legs.

Auf diese Weise wird der in der Tasche des Leistengehäuses einschiebbare Teilbereich der starren Platte in der Tasche festgehalten, da sich die warzenähnlichen Vorsprünge in die Kunststoffmasse des Leistengehäuses eindrücken, die beim Einschieben von den Vorsprüngen verursachten Eindrückungen sich jedoch in dem von diesen Vorsprüngen lediglich überstrichenen Bereich wieder zumindest teilweise zurückbilden, so daß sich die Vorsprünge selbsttätig im Leistengehäuse verriegeln.In this way, the part of the rigid plate which can be pushed into the pocket of the strip housing is held in the pocket, since the wart-like projections press into the plastic mass of the strip housing, but the impressions caused by the projections when pushed in are in the latter Only partially protrude projections that have been swept over again so that the projections lock themselves automatically in the strip housing.

Der Querversatz des Kontaktschlitzes gegenüber dem Kontaktierungsspalt der Kontaktfeder ermöglicht es, auf der Seite der Kontaktfederschenkelkontakte ein Rechteck-Kontaktraster zu realisieren, da, wenn man z.B. den Versetzungsgrad, gleich einem Viertel des Rasterabstandes dieses Kontaktrasters betißt, und die Kontaktfedern in. zwei Reihen mit in einer Reihe zu den Kontaktfedern der anderen Reihe gegeneinander vertauschten Kontaktfederschenkeln anordnet, wobei selbstverständlich die Kontaktfederleiste so ausgebildet sein muß, daß die zur Aufnahme des Teilbereiches der starren Platte vorgesehenen gehäuseseitigen Taschen sich jeweils am richtigen Ort befinden, die Kontaktschlitze jeweils korrespondierender Kontaktfedern der beiden Reihen bei der einen Kontaktfeder um ein Viertel des Rastermaßes nach der einen Seite und bei der anderen Kontaktfeder um ein Viertel-des Rastermaßes nach der anderen Seite verschoben sind, so daß bei einem Bandkabel mit im halben Rasterabstand der von den Kontaktfederschenkeln der Kontaktfedern gebildeten Kontaktfederkontakte nebeneinander liegenden Einzelleitern, jeweils nur ein Einzelleiter von einem Kontaktschlitz einer Kontaktfeder erfaßt wird.The transverse offset of the contact slot in relation to the contact gap of the contact spring makes it possible to implement a rectangular contact grid on the side of the contact spring leg contacts, because if e.g. the degree of dislocation, equal to a quarter of the grid spacing of this contact grid, and the contact springs arranged in two rows with contact spring legs interchanged in one row with the contact springs of the other row, the contact spring strip naturally having to be designed in such a way that it accommodates the partial area of the Rigid plate provided housing-side pockets are each in the right place, the contact slots of corresponding contact springs of the two rows are shifted to one side by a quarter of the pitch on one side and by a quarter of the pitch to the other side of the other contact spring , so that for a ribbon cable with half the pitch of the contact spring contacts formed by the contact spring legs of the contact springs adjacent individual conductors, only a single conductor is detected by a contact slot of a contact spring.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand von drei Figuren noch näher erläutert. Dabei zeigen, jeweils stark vergrößert, die

  • Fig. 1 und 2 die Kontaktfeder in Seitenansicht einmal mit Blickrichtung quer zu den U-Schenkeln des Basisteiles und einmal mit Blickrichtung parallel zu diesen und
  • Fig. 3 eine Ansicht von oben auf eine in eine aus Kunststoff bestehende Kontaktfederleiste eingesetzte Kontaktfeder mit geschnitten dargestelltem Leistengehäuse.
An embodiment of the invention is explained in more detail below with reference to three figures. Here, each greatly enlarged, the
  • 1 and 2, the contact spring in side view, once with a direction of view transverse to the U-legs of the base part and once with a direction of view parallel to these and
  • Fig. 3 is a top view of a contact spring inserted into a plastic contact spring strip with a strip housing shown in section.

Im einzelnen ist den Figuren zu entnehmen, daß die aus Flachmaterial bestehende Kontaktfeder ein U-förmiges Basisteil 2 aufweist, . dessen U-Schenkel 30,31 rechtwinklig zur Einsteckrichtung eines Kontaktmessers oder Kontaktstiftes, welcher bzw. welches mit der Kontaktfeder in Verbindung gebracht werden soll, gerichtet sind.In detail, it can be seen from the figures that the contact spring made of flat material has a U-shaped base part 2. whose U-legs 30, 31 are directed at right angles to the insertion direction of a contact knife or contact pin, which or which is to be connected to the contact spring.

Die beiden U-Schenkel.30,31 des Basisteiles 2 sind ungleich lang bemessen und der-längere U-Schenkel 30 geht in Einsteckrichtung eines Kontaktmessers oder Kontaktstiftes in einenals starre Platte 3a ausgebildeten Kontaktfederschenkel- über, dessen Breite der Länge des U-Schenkels 30 entspricht. Um dabei ohne Rücksicht auf den beim Übergang in das Querstück 41 des Basisteiles 2 gekrümmt verlaufenden U-Schenkel 30 die starre Platte 3a vollkommen plan ausbilden zu können und die Platte sich über die ganze Breite, die durch die Länge des U-Schenkels 30 bestimmt ist, erstrecken zu lassen, ist zwischen dem Basisteil 2 und der Platte 3a ein Freischnitt 35 vorgesehen, der den gekrümmt verlaufenden Bereich des U-Schenkels 30 von der Platte 3a trennt.The two U-legs. 30, 31 of the base part 2 are of unequal length and the longer U-leg 30 merges in the direction of insertion of a contact knife or contact pin into a contact spring leg designed as a rigid plate 3a, the width of which corresponds to the length of the U-leg 30 corresponds. In order to be able to design the rigid plate 3 a completely flat, regardless of the U-leg 30 that runs curved during the transition into the cross-piece 41 of the base part 2, and the plate extends over the entire width, which is determined by the length of the U-leg 30 , to extend, a cutout 35 is provided between the base part 2 and the plate 3a, which separates the curved region of the U-leg 30 from the plate 3a.

Entgegengesetzt zur Platte 3a weist der U-Schenkel 30 zwei Kontaktschneiden 16 auf, die zwischen sich einen Kontaktschlitz 17 begrenzen, in den ein drahtförmiger Leiter mit quer zum Schlitz 17 gerichtetem Verlauf eingedrückt werden kann. Dabei legen sich die Kontaktschneiden 16 federnd an den Leiter und verbinden diesen mit der Kontaktfeder. Das Querstück 41 des Basisteiles 2 ist auf der Seite des Kontaktschneidenpaares 16, also auf der von den Kontaktfederschenkeln abgewandten Seite, breiter ausgebildet als der kürzere U-Schenkel 31. Mit diesem verbreiterten Querstück 41 kann die Kontaktfeder in Einsteckrichtung an einem die Kontaktfederleistenhohlräume-verschließenden Deckel abgestützt werden, der nach dem Einsetzen der Kontaktfedern mit der Kontaktfederleiste verbunden wird.In contrast to the plate 3a, the U-leg 30 has two contact cutting edges 16 which delimit a contact slot 17 between them, into which a wire-shaped conductor with a course directed transversely to the slot 17 can be pressed. The contact cutting edges 16 resiliently lay against the conductor and connect it to the contact spring. The crosspiece 41 of the base part 2 is formed on the side of the pair of contact blades 16, i.e. on the side facing away from the contact spring legs, wider than the shorter U-leg 31. With this widened crosspiece 41, the contact spring can be supported in the insertion direction on a cover closing the contact spring strip cavities, which after Inserting the contact springs is connected to the contact strip.

Der andere kürzere U-Schenkel 31 des Basisteiles 2 ist einstückig mit einem federelastisch ausgebildeten Kontaktfederschenkel 3b, dessen Breite geringer als die Hälfte der Breite der Platte 3a bemessen ist. Außerdem ist der Kontaktfederschenkel 3b etwa mittig zu der Platte 3a angeordnet.The other shorter U-leg 31 of the base part 2 is in one piece with a spring-elastic contact spring leg 3b, the width of which is less than half the width of the plate 3a. In addition, the contact spring leg 3b is arranged approximately centrally to the plate 3a.

An seinem freien Ende 32 weist der Kontaktfederschenkel 3b einen den Kontaktfederschenkel 3b einseitig verbreiternden Ansatz 34 auf, der entgegengesetzt zum U-Schenkel 31 verläuft, jedoch nicht bis zum Rand der starren Platte 3a reicht.At its free end 32, the contact spring leg 3b has a projection 34 which widens the contact spring leg 3b on one side and runs opposite to the U-leg 31, but does not extend to the edge of the rigid plate 3a.

Auf diese Weise ergibt sich auf der vom Ansatz 34 abgewandten Seite des Kontaktfederschenkels 3b ein über diesen Kontaktfederschenkel seitlich hinausragender Teilbereich 38 der Platte 3a. Dieser außerhalb der Projektion.des Kontaktfederschenkels 3b auf die Platte 3a liegende Teilbereich der Platte 3a ist am freien Ende 36 der Platte 3a durch einen Einschnitt 37 von einem gegenüber dem Ansatz 34 des Kontaktfederschenkels 3b liegenden Teilbereich 39 der Platte 3a getrennt. Auf diese Weise kann das freie Ende 36 des Teilbereiches 39 in Richtung zum freien Ende 32 des Kontaktfederschenkels 3b gebogen werden und daher zusammen mit diesem ebenfalls bogenförmig gekrümmten freien Ende 32 den Kontaktfederkontakt 4 bilden, in den zum Zwecke der Herstellung einer elektrischen Verbindung zwischen einem Kontaktmesser oder Kontaktstift und der Kontaktfeder das Kontaktmesser oder der Kontaktstift eingesteckt wird.In this way, on the side of the contact spring leg 3b facing away from the shoulder 34, a partial region 38 of the plate 3a protrudes laterally beyond this contact spring leg. This portion of the plate 3a lying outside the projection of the contact spring leg 3b on the plate 3a is separated at the free end 36 of the plate 3a by an incision 37 from a portion 39 of the plate 3a lying opposite the shoulder 34 of the contact spring leg 3b. In this way, the free end 36 of the portion 39 can be bent in the direction of the free end 32 of the contact spring leg 3b and therefore together with this also curved free end 32 den Form contact spring contact 4, in which the contact knife or the contact pin is inserted for the purpose of establishing an electrical connection between a contact knife or contact pin and the contact spring.

Der Einschnitt 37 ermöglicht es außerdem, den Teilbereich 38 des Kontaktfederschenkels 3a vollkommen flach verlaufen zu lassen, so daß dieser in eine entsprechend angepaßt ausgebildete Gehäusetasche (Fig. 3) 42 der Kontaktfederleiste 43 eingeschoben werden kann. Im Teilbereich 38 vorgesehene warzenartige Vorsprünge 40 drücken sich dabei in die Kunststoffmasse der Leiste 43 ein und fixieren damit die in das Leistengehäuse eingesetzte Kontaktfeder, so daß diese nicht wieder aus dem Gehäuse herausfallen kann. Die Tasche 42 ist nach oben zu, also in Fig. 3 in Richtung zum Betrachter hin, verschlossen, so daß dadurch-.beim Einsetzen der Kontaktfeder in einen ihr zugeordneten Hohlraum der Kontaktfederleiste mit den Kontaktfederschenkeln 3a und 3b voraus, ein Anschlag gebildet wird, der die Einstecktiefe der Kontaktfeder entgegen der Einsteckrichtung eines Kontaktmessers oder Kontaktstiftes in die Kontaktfeder begrenzt und dadurch auch die Kontaktfeder beim Eindrücken eines Einzelleiters in den Kontaktschlitz 17 abstützt. Da außerdem der federnde Kontaktfederschenkel 3b nicht so weit nach oben ragt, wie die starre Platte 3a, bleibt der federnde Schenkel 3b immer beweglich, mit anderen Worten, ein Eingraben des freien Endes 32 des federnden Schenkels 3b in die Kunststoffmasse der Kontaktfederleiste wird dadurch sicher verhindert.The incision 37 also makes it possible to let the partial area 38 of the contact spring leg 3a run completely flat, so that it can be inserted into a suitably designed housing pocket (FIG. 3) 42 of the contact spring strip 43. The wart-like projections 40 provided in the partial area 38 press into the plastic mass of the strip 43 and thus fix the contact spring inserted into the strip housing so that it cannot fall out of the housing again. The pocket 42 is closed at the top, that is to say in FIG. 3 toward the viewer, so that a stop is formed when the contact spring is inserted into an associated cavity of the contact spring strip with the contact spring legs 3a and 3b in advance. which limits the insertion depth of the contact spring against the direction of insertion of a contact knife or contact pin into the contact spring and thereby also supports the contact spring when a single conductor is pressed into the contact slot 17. In addition, since the resilient contact spring leg 3b does not protrude as far as the rigid plate 3a, the resilient leg 3b always remains movable, in other words, digging the free end 32 of the resilient leg 3b into the plastic mass of the contact spring strip is thereby reliably prevented .

Eine zur Bildung der Tasche 42 zwischen der starren Platte 3a und dem federnden Schenkel 3b vorgesehene Taschenwand 44 (Fig. 3) dient vorteilhaft zugleich zur Vorzentrierung und Voröffnung des Kontaktfederschenkels 3b, der sich an dieser Wand 44 abstützt. Auf diese Weise wird die zum Einstecken eines Kontaktmessers oder Kontaktstiftes erforderliche-Kraft vermindert und die Gefahr eines Hintersteckens, also des Verfehlens des Zwischenraumes zwischen starrer Platte 3a und Kontaktfederschenkel 3b, durch ein Kontaktmesser oder einen Kontaktstift wesentlich vermindert.One provided to form the pocket 42 between the rigid plate 3a and the resilient leg 3b Pocket wall 44 (FIG. 3) advantageously also serves for the pre-centering and pre-opening of the contact spring leg 3 b, which is supported on this wall 44. In this way, the force required for inserting a contact knife or contact pin is reduced and the risk of rear insertion, ie the missing of the space between rigid plate 3a and contact spring leg 3b, is substantially reduced by a contact knife or contact pin.

Wie insbesondere Fig. 3 zeigt, bildet das U-förmige Basisteil zusammen mit dem als starre Platte ausgebildeten Kontaktfederschenkel 3a einen von Wänden-des Leistengehäuses umfaßten starren Teil der Kontaktfeder, der die betriebssichere Lage der Kontaktfeder in dem ihr zugewandten Hohlraum des Leistengehäuses 43 voll gewährleistet.As shown in FIG. 3 in particular, the U-shaped base part, together with the contact spring leg 3a designed as a rigid plate, forms a rigid part of the contact spring which is enclosed by walls of the strip housing and which fully guarantees the reliable position of the contact spring in the cavity of the strip housing 43 facing it .

Aus Fig. 1 ist zu entnehmen, daß der Kontaktschlitz 17 zur Aufnahme eines Einzelleiters gegenüber dem vom Teilbereich 39 und dem Kontaktfederschenkel 3b gebildeten Kontaktfederkontakt 4 querversetzt ist. Dieser Querversatz, der z.B. ein Viertel des Rasterabstandes der Kontaktstifte oder Kontaktmesser voneinander beträgt, die mit den Kontaktfedern der Leiste in Verbindung zu bringen sind, ermöglicht es, daß jeweils ein Einzelleiter eines Bandkabels jeweils nur von einem Kontaktschlitz 17, also auch nur von einer Kontaktfeder erfaßt wird, wenn man bei zweireihiger Anordnung der Kontaktfedern im Leistengehäuse die Kontaktfedern der einen Reihe mit gegenüber den Kontaktfedern der anderen Reihe vertauschten Kontaktfederschenkeln 3a, 3b anordnet, wobei selbstverständlich die Hohlräume zur Aufnahme der Kontaktfedern in entsprechender Weise ausgelegt sein müssen.From Fig. 1 it can be seen that the contact slot 17 for receiving a single conductor is transversely offset from the contact spring contact 4 formed by the portion 39 and the contact spring leg 3b. This transverse offset, which e.g. a quarter of the grid spacing of the contact pins or contact knives from each other, which are to be connected to the contact springs of the strip, enables a single conductor of a ribbon cable to be detected by only one contact slot 17, that is to say only by one contact spring, if one in the case of a two-row arrangement of the contact springs in the strip housing, the contact springs of the one row with contact spring legs 3a, 3b which are interchanged with the contact springs of the other row are arranged, the cavities for receiving the contact springs of course having to be designed in a corresponding manner.

BezugszeichenlisteReference symbol list

  • -2 Basisteil-2 base part
  • 3a starre Platte3a rigid plate
  • 3b federnder Kontaktfederschenkel3b resilient contact spring leg
  • 4 Kontaktfederkontakt4 contact spring contact
  • 16 Kontaktschneiden16 contact cutting
  • 17 Kontaktschlitz der Kontaktschneiden17 Contact slot of the contact blades
  • 30 längerer U-Schenkel30 longer U-legs
  • 31 kürzerer U-Schenkel31 shorter U-legs
  • 32 freies Ende von 3b32 free end of 3b
  • 33 freies Ende von 3133 free end of 31
  • 34 Ansatz an 3b34 Approach to 3b
  • 35 Freischnitt in 3a35 free cut in 3a
  • 36 freies Ende von 3a36 free end of 3a
  • 37 Einschnitt in 3a37 Incision in 3a
  • 38 flach verlaufender Teilbereich von 3a38 flat portion of 3a
  • 39, endseitig gebogener Teilbereich von 3a39, end portion of FIG. 3a
  • 40 warzenähnliche Vorsprünge in 3840 wart-like projections in 38
  • 41 Quer- oder Verbindungsstück von 30 und 3141 cross or connecting piece of 30 and 31
  • 42 Aufnahmetasche für 3842 pocket for 38
  • 43 Leiste'43 bar '
  • 44 Taschenwand44 pocket wall

Claims (5)

1. Kontaktfeder für Bandkabelanschluß mit einem U-förmigen Basisteil und zwei von den U-Schenkeln des Basisteiles rechtwinklig abstehenden, gemeinsam einen Kontaktfederkontakt für einen Kontaktstift oder ein Kontaktmesser bildenden Kontaktfederschenkeln, die in einen kanalartigen Hohlraum einer Kontaktfederleiste mit quer zum Verlauf des Hohlraumes gerichtetem Basisteil und mit den Kontaktfederschenkeln voraus einsetzbar ist und mit einem von einem der beiden U-Schenkel des Basisteiles entgegengesetzt zum Verlauf der Kontaktfederschenkel abstehenden, aus der Kontaktfederleiste vorstehenden, einen Schneid-Klemmkontakt für einen drahtförmigen Leiter bildenden Kontaktschneidenpaar entsprechend Patent 26 07 693, dadurch gekennzeichnet , daß die U-Schenkel (30,31) des Basisteiles (2) ungleich lang bemessen sind, daß der von dem längeren U-Schenkel (30) abstehende Kontaktfederschenkel als starre Platte (3a) mit einer der Länge des U-Schenkels (30) entsprechenden Breite ausgebildet ist und daß der von dem kürzeren U-Schenkel (31) abstehende federnde Kontaktfederschenkel (3b) eine Breite aufweist, die weniger als die Hälfte der Breite der starren Platte (3a) beträgt, daß der federnde Kontaktfederschenkel (3b) etwa mittig zur starren Platte (3a) angeordnet ist, und an seinem freien Ende (32) mit einem von dem freien Ende (33) der U-Schenkel (30,31) weg - gerichteten, gegenüber dem Rand der starren Platte (3a) jedoch zurückgesetzten, den Kontaktfederschenkel (3b) einseitig verbreiternden Ansatz (34) aufweist.1. Contact spring for ribbon cable connection with a U-shaped base part and two protruding at right angles from the U-legs of the base part, together forming a contact spring contact for a contact pin or a contact knife contact spring legs, which in a channel-like cavity of a contact spring strip with the base part directed transversely to the course of the cavity and can be used with the contact spring legs in advance and with one of the two U-legs of the base part opposite to the course of the contact spring legs, protruding from the contact spring strip and forming an insulation displacement contact for a wire-shaped contact blade pair in accordance with patent 26 07 693, characterized in that that the U-legs (30, 31) of the base part (2) are of unequal length, that the contact spring leg protruding from the longer U-leg (30) as a rigid plate (3a) with a length of the U-leg (30) corresponding width is formed and there ß of the shorter U-leg (31) projecting resilient contact spring leg (3b) has a width which is less than half the width of the rigid plate (3a) that the resilient contact spring leg (3b) approximately in the middle of the rigid plate (3a ) is arranged, and at its free end (32) with a contact spring leg (3b.) facing away from the free end (33) of the U-legs (30, 31) but set back with respect to the edge of the rigid plate (3a) ) has unilaterally widening approach (34). 2. Kontaktfeder nach Anspruch 1, dadurch gekennzeichnet , daß zwischen dem wurzelseitig gekrümmt verlaufenden Teil des längeren U-Schenkels (30) und der starren Platte (3a) ein Freischnitt (35) vorgesehen ist.2. Contact spring according to claim 1, characterized in that a free cut (35) is provided between the part of the longer U-leg (30) and the rigid plate (3a) which is curved on the root side. 3. Kontaktfeder nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die starre Platte (3a) an ihrem freien Ende (36) einen Einschnitt (37) zur Trennung eines flachen, im wesentlichen außerhalb der Projektion des federnden Kontaktfederschenkels (3b) auf die starre Platte (3a) liegenden Teilbereichs (38) und eines mit dem federnden Kontaktfederschenkel (3b) zusammenwirkenden, endseitig in Richtung zu diesem gebogenen, anderen Teilbereich (39) aufweist.3. Contact spring according to claim 1 or 2, characterized in that the rigid plate (3a) at its free end (36) has an incision (37) for separating a flat, substantially outside the projection of the resilient contact spring leg (3b) on the rigid Plate (3a) lying section (38) and one with the resilient contact spring leg (3b) cooperating, at the end in the direction of this bent, other section (39). 4. Kontaktfeder nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der flache Teilbereich (38) der starren Platte mit warzenähnlichen Vorsprüngen (40) versehen ist.4. Contact spring according to one of the preceding claims, characterized in that the flat portion (38) of the rigid plate is provided with wart-like projections (40). 5. Kontaktfeder nach Anspruch 1, dadurch gekennzeichnet, daß der von den Kontaktschneiden (16) begrenzte, den Schneid-Klemmkontakt bildende Kontaktschlitz (17) gegenüber dem von den Kontaktfederschenkeln (3a,3b) gebildeten Kontaktfederkontakt (4) querversetzt ist.5. Contact spring according to Claim 1, characterized in that the contact slot (17) bounded by the contact blades (16) and forming the insulation displacement contact is transversely offset with respect to the contact spring contact (4) formed by the contact spring legs (3a, 3b).
EP81103803A 1980-05-23 1981-05-18 Contact spring for flat cable connection Expired EP0040783B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81103803T ATE9048T1 (en) 1980-05-23 1981-05-18 CONTACT SPRING FOR RIBBON CABLE CONNECTION.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3019841 1980-05-23
DE19803019841 DE3019841A1 (en) 1980-05-23 1980-05-23 CONTACT SPRING FOR TAPE CABLE CONNECTION

Publications (2)

Publication Number Publication Date
EP0040783A1 true EP0040783A1 (en) 1981-12-02
EP0040783B1 EP0040783B1 (en) 1984-08-15

Family

ID=6103197

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81103803A Expired EP0040783B1 (en) 1980-05-23 1981-05-18 Contact spring for flat cable connection

Country Status (5)

Country Link
EP (1) EP0040783B1 (en)
AT (1) ATE9048T1 (en)
DE (2) DE3019841A1 (en)
FI (1) FI811585L (en)
NO (1) NO811719L (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2213655A (en) * 1987-12-15 1989-08-16 Bicc Plc Electrical connector
EP0738026A1 (en) * 1995-04-10 1996-10-16 Siemens Aktiengesellschaft Contact spring
EP0748001A1 (en) * 1995-06-06 1996-12-11 Sumitomo Wiring Systems, Ltd. Joint connector terminal fitting and connector housing
US5904581A (en) * 1996-07-17 1999-05-18 Minnesota Mining And Manufacturing Company Electrical interconnection system and device
EP1160924A1 (en) * 2000-05-30 2001-12-05 Société Anonyme SYLEA Electrical connection device for an electrical male contact and casing for receiving such a device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10247410B4 (en) * 2002-10-11 2014-02-13 Robert Bosch Gmbh contact element

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2540550A1 (en) * 1975-09-11 1977-04-07 Du Pont Nederland Connector for flat cable - has cable clamped between guide block and cover and knife contacts biting into it
DE2819868A1 (en) * 1977-05-06 1978-11-09 Amp Inc ELECTRIC CONNECTOR
DE2607693B2 (en) * 1976-02-25 1979-03-15 Siemens Ag, 1000 Berlin Und 8000 Muenchen Contact spring for ribbon cable connection
US4171858A (en) * 1978-06-01 1979-10-23 Litton Systems, Inc. Insulation displacement connector for a flat multi-conductor cable

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2540550A1 (en) * 1975-09-11 1977-04-07 Du Pont Nederland Connector for flat cable - has cable clamped between guide block and cover and knife contacts biting into it
DE2607693B2 (en) * 1976-02-25 1979-03-15 Siemens Ag, 1000 Berlin Und 8000 Muenchen Contact spring for ribbon cable connection
DE2819868A1 (en) * 1977-05-06 1978-11-09 Amp Inc ELECTRIC CONNECTOR
US4171858A (en) * 1978-06-01 1979-10-23 Litton Systems, Inc. Insulation displacement connector for a flat multi-conductor cable

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2213655A (en) * 1987-12-15 1989-08-16 Bicc Plc Electrical connector
EP0738026A1 (en) * 1995-04-10 1996-10-16 Siemens Aktiengesellschaft Contact spring
EP0748001A1 (en) * 1995-06-06 1996-12-11 Sumitomo Wiring Systems, Ltd. Joint connector terminal fitting and connector housing
CN1084061C (en) * 1995-06-06 2002-05-01 住友电装株式会社 Terminal connector, terminating accessories and connector shell
US5904581A (en) * 1996-07-17 1999-05-18 Minnesota Mining And Manufacturing Company Electrical interconnection system and device
US6135781A (en) * 1996-07-17 2000-10-24 Minnesota Mining And Manufacturing Company Electrical interconnection system and device
EP1160924A1 (en) * 2000-05-30 2001-12-05 Société Anonyme SYLEA Electrical connection device for an electrical male contact and casing for receiving such a device
FR2809872A1 (en) * 2000-05-30 2001-12-07 Sylea ELECTRICAL CONNECTION DEVICE FOR MALE ELECTRIC CONTACT MEMBER AND HOUSING ELEMENT FOR RECEIVING SUCH A DEVICE
US6409554B2 (en) 2000-05-30 2002-06-25 Sylea Electrical connection device for directly joining a conductor to a male electrical contact member

Also Published As

Publication number Publication date
ATE9048T1 (en) 1984-09-15
NO811719L (en) 1981-11-24
DE3165533D1 (en) 1984-09-20
DE3019841A1 (en) 1981-12-03
EP0040783B1 (en) 1984-08-15
FI811585L (en) 1981-11-24

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