EP0327464B1 - Kontakt für einen telefonischen Steckverbinder und sein Herstellungsverfahren - Google Patents

Kontakt für einen telefonischen Steckverbinder und sein Herstellungsverfahren Download PDF

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Publication number
EP0327464B1
EP0327464B1 EP89400304A EP89400304A EP0327464B1 EP 0327464 B1 EP0327464 B1 EP 0327464B1 EP 89400304 A EP89400304 A EP 89400304A EP 89400304 A EP89400304 A EP 89400304A EP 0327464 B1 EP0327464 B1 EP 0327464B1
Authority
EP
European Patent Office
Prior art keywords
contact
heads
slot
head
notch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89400304A
Other languages
English (en)
French (fr)
Other versions
EP0327464A1 (de
Inventor
Jean-Jacques Lacombe
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.)
BOGA SA
Original Assignee
BOGA SA
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 BOGA SA filed Critical BOGA SA
Publication of EP0327464A1 publication Critical patent/EP0327464A1/de
Application granted granted Critical
Publication of EP0327464B1 publication Critical patent/EP0327464B1/de
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
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending
    • 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
    • H01R4/2445—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 having additional means acting on the insulation or the wire, e.g. additional insulation penetrating means, strain relief means or wire cutting knives
    • H01R4/245—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 having additional means acting on the insulation or the wire, e.g. additional insulation penetrating means, strain relief means or wire cutting knives the additional means having two or more slotted flat portions
    • H01R4/2454—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 having additional means acting on the insulation or the wire, e.g. additional insulation penetrating means, strain relief means or wire cutting knives the additional means having two or more slotted flat portions forming a U-shape with slotted branches

Definitions

  • a very desirable type of contact comprises two contact elements intended to cooperate with two conductors, these two contact elements being electrically connected so that they are at the same potential and also being connected to a contact tail, of elastic type, allowing temporary contact with another analog contact tail or with a test device, inserted in the connector block. So there have already been made such contacts allowing the connection of two conductive wires and having a tail of "cut", that is to say allowing the formation of a temporary contact.
  • a first known type of contact comprises a flat head having two contact elements, each formed by a notch and a slot. These two contact elements are placed side by side on the head. This contact has drawbacks because the side by side arrangement of the two contact elements increases the width of the contact head, so that the connector blocks must have a large width, for a determined number of contacts.
  • European patent application No. 171,193 describes a contact having several pairs of contacts, more precisely two pairs of contacts connected to one another. This contact comprises, on either side of a common connecting part, two contact heads connected by a cheek. Each pair of contact heads is intended to fix a single thread. In addition, these contact heads are not of the insulation displacement type. This contact is intended for use in motor vehicles.
  • the invention relates to new contacts for connector blocks (cable heads and strips) which include two contact elements placed at the same potential, the two contact elements being produced in two contact heads cut from the same piece of wire. 'a flat material and being each formed by a single thickness of this flat material.
  • the two contact heads are spaced from each other and at least one of them has, on the side opposite its contact part, a tail which can flex elastically.
  • a support tongue secured to the other contact head defines a location for bending the tail so that the connecting cheek of the two contact elements is not subjected to excessive force.
  • the invention also relates to a insulation displacement contact element of the type which has a V-shaped notch and a slot, the widest part of the notch opening at one edge of the contact element and the slot extending the notch at its point ; according to the invention, this element is manufactured by implementing the preceding method according to the invention, and it comprises a substantially rectilinear slot such that the thickness of the material along the edges of the slot and in the vicinity thereof is less than the thickness of the rest of the contact element.
  • the projection carried by one of the contact heads protrudes sufficiently from the plane of this head so that it is normally in contact with the other head.
  • FIG. 1 represents a contact according to the invention.
  • This contact essentially comprises two contact heads 10, 12.
  • the head 10 is extended by a tail 30, and the two heads are joined by a cheek 26.
  • each of the two contact heads 10, 12 has a contact element 14.
  • Each contact element 14 has a V-shaped notch 16, opening at one end of the head, a slot 18 formed in the extension of the tip of the notch, and a hole 20 in which the slot 18 ends. It is noted in FIGS. 3 and 4 that the edges of the slot have a thickness that is thinner than the rest of the contact heads, because a thinned area 19 is formed at the location of the slot. This characteristic is described in more detail below with reference to the manufacturing process.
  • the two contact heads 10, 12 are connected to each other by a cheek 26 which is integral with the heads.
  • the cheek is formed by folding the blank shown in FIG. 2 or in FIG. 3 around folding lines 27 which are parallel to the longitudinal direction of the contact elements. Note that the cheek has a limited length so that the two contact elements work independently.
  • the contact head 10 extends rearward, that is to say on the side where the projection 28 is placed, by the shank 30 which has two contact projections 32, 34.
  • This tail when the contact is mounted in a block of connectors, is intended to flex in the direction of arrow 35 ( Figure 1).
  • the flexion would be localized at the end of the cheek 26, and more precisely at the connection of the cheek and the head 10 at the place where they are perpendicular, at the end of the play. These localized stresses could quickly cause cracking and then complete rupture of the head and cheek material.
  • the projection 28 postpones the location of the bending at a distance from the end of the cheek 26, so that the material works only in bending and not in shearing. In this way, the longevity of the contact is increased.
  • Figure 4 shows two possible characteristics, which are also shown in Figure 1 on a smaller scale.
  • the reference 36 designates a second possible projection intended to determine the spacing of the heads 10 and 12 during folding and to reduce the shear forces at the other end of the cheek, that is to say the closest to the contact elements.
  • this projection is not necessary because the contact elements of the contact heads are not normally subjected to significant forces perpendicular to their plane.
  • the projection 36 can be offset further towards the contact elements, so that it is placed beyond the end of the cheek. This end of the cheek can also be brought closer to the other end of the cheek, so that localized shear stresses are avoided.
  • FIG. 2 represents a blank which has been formed by cutting a single member from a flat material. This member has however undergone the cutting of a tongue intended to form the projection 28, the cutting of the notches of the contact elements and the punching of the holes 20.
  • the slots should be formed. These slots must be cut with a determined width, for example 0.25 mm. The slots can be formed directly between the notch 16 and the hole 20. However, it can be seen in convenient that the cutting tools of such a slot wear out quickly. It is therefore desirable that the thickness of the contact is reduced at the places where a slot must be cut.
  • the ends of the contacts are cut as indicated by the reference 62.
  • the cutting of the contact heads is finished, the following operations being, at the bottom of FIG. 5, the cutting of the tail, its folding, folding the head, then (in operations which are not illustrated in FIG. 5) folding the contact itself and separating it from the strip.
  • the stamping which reduces the thickness of the zone in which the slot must be formed is carried out before the formation of the notches.
  • the problem posed by the stress of the metal in the contact parts placed on either side of the notch does not pose the problem solved by the method described in the abovementioned British patent.
  • the elongated crushing area 19 has been shown on one side of the blank, this elongated area can be formed independently on either side.
  • the projection 28 formed by a cut tongue This tab therefore has a certain elasticity. However, it can also be a simple deformation of one head, facing the other head. Also shown is the projection 28 formed on the head which is not extended by a tail 30. However, the projection can be formed on the contact head which comprises the tail, as long as the flexion location of the tail is transferred beyond the cheek 26, on the side opposite to that which includes the contact elements, and that the formation of the projection does not create a zone of weakness in the material.
  • the two contact heads are in the form of such tails or connection tabs, it may be advantageous for the two tabs not to be superposed, that is to say are offset in a direction perpendicular to the cheek.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Claims (6)

  1. Verfahren zur Herstellung eines selbstreinigenden Kontaktelements, enthaltend eine V-förmige Aussparung (16) und einen Schlitz (18), wobei sich der größte Teil der Aussparung an einer Kante des Kontaktelements öffnet und der Schlitz die Aussparung an deren Spitze verlängert, gekennzeichnet durch folgende Verfahrensschritte:
    - lokales Zusammendrücken einer gestreckten Zone eines aus einem flachen Material bestehenden Plättchens, so daß die Stärke an der für den Schlitz vorgesehenen Stelle und beiderseits dieser Stelle reduziert wird, dann
    - Schneiden des Plättchens, so daß eine V-förmige Aussparung (16) gebildet wird, deren Spitze in das Innere des Plättchens und praktisch an einem Ende der gestreckten Zone ausgerichtet ist und
    - Schneiden eines Schlitzes (18) in der in der Stärke reduzierten, gestreckten Zone und in Verlängerung der Spitze der Aussparung und parallel zur Längsachse des Kontaktelements.
  2. Verfahren nach Anspruch 1, gekennzeichnet durch die Bildung von zwei Kontaktelementen (14) in zwei durch einen Seitenteil (26) miteinander verbundenen Köpfen (10, 12), wobei die beiden Kontaktelemente parallel zueinander sind und durch das Falten des Plättchens um die Kanten des Seitenteils (26) in einer Richtung (27) parallel zur Längsrichtung der Kontaktelemente.
  3. Verfahren nach Anspruch 2, ferner gekennzeichnet durch das Schneiden einer Lasche (28) in wenigstens einem Kontaktkopf, um einen Vorsprung zu bilden, und durch das Schneiden eines Endstücks (30) in wenigstens dem anderen Kontaktkopf.
  4. Kontakt für einen Steckerblock, dadurch gekennzeichnet, daß er zwei Kontaktelemente (14) enthält, die in zwei Kontaktköpfen (10, 12) gebildet sind, die in zwei unterschiedlichen, parallelen Ebenen angeordnet sind, wobei jedes selbstreinigende Kontaktelement eine V-förmige Aussparung (16) und einen Schlitz (18) aufweist, wobei sich der größte Teil der Aussparung an einer Kante des Kontaktelements öffnet und der Schlitz die Aussparung an deren Spitze verlängert, wobei jedes Element nach einem Verfahren gemäß dem Anspruch 1 hergestellt wird, wobei der Kontakt aus einem einzigen Teil aus einem flachen Material gebildet wird, der entlang einer Achse (27) parallel zur Längsrichtung der gestreckten Kontaktköpfe gefaltet wird, wobei die Faltung ein Seitenteil (26) in Richtung exakt parallel zu den Ebenen der Köpfe und parallel zu der Längsrichtung der Elemente bildet und daß wenigstens einer der Kontaktköpfe einen zum anderen Kontaktkopf gedrehten Vorsprung (28) aufweist, wobei dieser Vorsprung mit Abstand von dem Seitenteil (26) in Richtung quer zur Faltrichtung angeordnet ist und jenseits des Vorsprungs auf der Seite desselben vorgesehen ist, die der Seite, die das Kontaktelement (14) trägt, gegenüberliegt, und wobei die Materialstärke entlang der Kanten des Schlitzes und in der Nähe desselben geringer ist als die Stärke des restlichen Kontaktelements.
  5. Kontakt nach Anspruch 4, dadurch gekennzeichnet, daß der von einem der Kontaktköpfe getragene Vorsprung (28) in ausreichendem Maße über die Ebene dieses Kopfes (12) vorsteht, um normalerweise in Kontakt mit dem anderen Kopf (10) zu stehen.
  6. Kontakt nach einem der Ansprüche 4 oder 5, dadurch gekennzeichnet, daß einer der Kontaktköpfe durch ein elastisches Endstück (30) verlängert ist.
EP89400304A 1988-02-03 1989-02-02 Kontakt für einen telefonischen Steckverbinder und sein Herstellungsverfahren Expired - Lifetime EP0327464B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8801257A FR2626718B1 (fr) 1988-02-03 1988-02-03 Contact pour connecteur telephonique et son procede de fabrication
FR8801257 1988-02-03

Publications (2)

Publication Number Publication Date
EP0327464A1 EP0327464A1 (de) 1989-08-09
EP0327464B1 true EP0327464B1 (de) 1994-07-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP89400304A Expired - Lifetime EP0327464B1 (de) 1988-02-03 1989-02-02 Kontakt für einen telefonischen Steckverbinder und sein Herstellungsverfahren

Country Status (3)

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EP (1) EP0327464B1 (de)
DE (1) DE68916662D1 (de)
FR (1) FR2626718B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2696282A1 (fr) * 1992-09-25 1994-04-01 Boga Ingenierie Tête de contact et contact pour connecteurs et procédé pour leur fabrication.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963319A (en) * 1974-12-12 1976-06-15 Amp Incorporated Coaxial ribbon cable terminator
US4192570A (en) * 1978-08-21 1980-03-11 Bell Telephone Laboratories, Incorporated Insulated electrical conductor termination construction
GB2129716B (en) * 1982-11-05 1985-10-16 H & T Components Ltd Electrical connectors
US4586775A (en) * 1984-08-03 1986-05-06 General Motors Corporation Duplex insulation displacement terminal

Also Published As

Publication number Publication date
FR2626718A1 (fr) 1989-08-04
DE68916662D1 (de) 1994-08-18
FR2626718B1 (fr) 1991-09-27
EP0327464A1 (de) 1989-08-09

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