EP0905817B1 - Verbindungsvorrichtung mit Schneidklemmkontaktelement - Google Patents

Verbindungsvorrichtung mit Schneidklemmkontaktelement Download PDF

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Publication number
EP0905817B1
EP0905817B1 EP19980410101 EP98410101A EP0905817B1 EP 0905817 B1 EP0905817 B1 EP 0905817B1 EP 19980410101 EP19980410101 EP 19980410101 EP 98410101 A EP98410101 A EP 98410101A EP 0905817 B1 EP0905817 B1 EP 0905817B1
Authority
EP
European Patent Office
Prior art keywords
self
metal
slit
contact
cylindrical shape
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
EP19980410101
Other languages
English (en)
French (fr)
Other versions
EP0905817A1 (de
Inventor
Joseph Pellicano
Louis Linares
Daniel Vanzetto
Michel Lauraire
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.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric Industries SAS
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 Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP0905817A1 publication Critical patent/EP0905817A1/de
Application granted granted Critical
Publication of EP0905817B1 publication Critical patent/EP0905817B1/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
    • 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
    • H01R4/2437—Curved plates
    • H01R4/2441—Curved plates tube-shaped
    • 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
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H01R13/71—Contact members of coupling parts operating as switch, e.g. linear or rotational movement required after mechanical engagement of coupling part to establish electrical connection

Definitions

  • the present invention relates to a connection device with self-stripping contact element, for the connection of the conductors of cables or electrical wires or metal bars or the like, to a metal strip of distribution of a terminal of a distribution terminal block , an electrical appliance or the like.
  • the self-stripping contact element has two edges sharpened to allow to cut the insulation and to ensure contact with the conductor of a cable or an electrical wire.
  • This self-stripping contact element is fixed and is associated with means for pushing the cable or the electric wire between the sharp parallel edges of the contact element.
  • the means for pushing the cable comprise a screw disposed inside a pusher which moves in translation in a well under the effect of the rotation of the screw. To move the pusher sufficiently to bring the cable into the self-stripping contact element, that is to say to ensure its connection, it is necessary to give several complete turns to the screw.
  • the cable is not held during this operation and can escape if it is not held in position by the operator before being locked in position by the action of the sharp edges of the element self-stripping contact on the insulation of the cable or wire.
  • the present invention proposes to provide a connection device with self-stripping contact element and which does not have the mentioned drawbacks of the known system. It has very few parts, which makes it economical and reliable.
  • the cable or wire remains in a fixed position during the connection operation, which guarantees the quality of the connection.
  • the movement to which the contact element is subjected is a simple displacement, in this case preferably a rotation of a quarter or a half-turn, which makes it possible to simplify to the extreme the mechanical parts of the system and therefore reduce production costs.
  • connection device as defined in the preamble is known from US 5254015.
  • the device is characterized by the features of claim 1.
  • the self-stripping slot extends over a length corresponding to an angle of between 45 and 270 ° and preferably close to 180 °.
  • the substantially cylindrical tubular shaped part of the self-stripping contact element advantageously comprises several slots arranged in parallel. These slots may have different cross sections to correspond to different diameters of cables or wires.
  • connection device 10 is for example mounted in a distribution terminal block 11 which comprises at least one receiving housing 12 of this device.
  • This device could also be mounted in any other electrical device to serve as a connection terminal of external conductors of a circuit.
  • the connection device 10 itself mainly comprises a self-stripping contact element consisting of a substantially cylindrical tubular part 13 composed of a side wall 13a and an end piece 13b which extends the side wall towards the end. open end of the housing 12.
  • the tip 13b preferably has a reduced section relative to the diameter of the side wall 13a and comprises a central recess 13c, described in more detail with reference to FIGS. 2A and 2B, which allows, by its shape, a coupling with a tool such as a wrench or a screwdriver to drive the workpiece 13 in rotation about its axis of symmetry.
  • the central recess could also be replaced by a protuberance with two opposite flat faces to allow the use of a key, such as a spanner for example.
  • the distribution terminal block 11 comprises a metal strip 14 of electrical connection which can have any shape provided that it is adapted to be in close contact with the part 13.
  • this part 13 comprises at least one zone 15 having a smooth peripheral surface that provides reliable electrical contact with said metal bar 14.
  • the side wall 13a of the part 13 has an elongated slot-shaped opening 16 whose cross section passes by a value equal to or greater than the diameter of the cable or the electric wire 17 comprising a central conductor 18 and at least one peripheral layer of an insulator 19, in the vicinity of one of its ends, at an equal value and, preferably, slightly smaller than the diameter of the central conductor 18, in the vicinity of its opposite end.
  • the edges 16a and 16b of the slot 16 are sharp such that the insulation 19 is cut and the conductor 18 is slightly notched when the cable or the electric wire has passed from one end of this slot to the other. This passage takes place without moving the cable or the electric wire 17, but following a rotation of the part 13.
  • the two positions are respectively represented by FIGS. 1A and 1B.
  • means (not shown) forming a stop for limiting the rotational stroke of the cylinder may be provided, for example, at the lower or upper part of said cylinder.
  • Figures 2A and 2B show, in the form of perspective views, two embodiments of the substantially cylindrical tubular part 13.
  • the tip 13b has in its central part a recess 20 which corresponds to the profile of a Phillips screwdriver in the construction according to Figure 2A and a flat screwdriver in the construction according to Figure 2B.
  • FIG. 3 represents the distribution terminal block 11, seen in perspective, and shown in section in FIGS. 1A and 1B. It comprises an elongate body having a plurality of housings 12 in which several connection devices 10 are arranged respectively. containing a connection device 10 corresponds to an opening in the form of an access tunnel 21, disposed laterally on the body of the terminal block 11, for receiving and guiding a cable or an electric wire 17 in the direction of the self-stripping slot 16 of the corresponding self-stripping contact element.
  • FIG. 4 represents the distribution terminal block 11 of FIG. 3, partially cut away and shows in particular the specific shape of the metal distribution strip 14 which ensures electrical contact with the substantially cylindrical tubular parts 13 of the self-stripping contact elements. .
  • This bar is folded so as to form a succession of U inverted 22 in which are embedded the parts 13. The close contact of the metal bar and the corresponding part 13 is provided in three support zones regardless of the position of the piece, which guarantees a good electrical connection.
  • FIG. 5 represents an alternative embodiment of the part 13 whose side wall 13a is provided with three slots 16 arranged in parallel, respectively intended to provide the connection of three cables or electrical wires 17. These slots may be identical or have different dimensions to allow to connect cables or electrical wires of different diameters.
  • a slot that can accept cables or son of different diameters may be used.
  • This slot comprises, between the introduction zone of the cable and the connection zone, a set of slots (c) located on either side of the axis (x) of the slot.
  • FIGS. 6A, 6B and 6C respectively show perspective views (FIG. 6A) and elevation views (FIGS. 6B and 6C) of another variant embodiment of a substantially cylindrical and tubular part 13 of the self-contacting contact element. stripping.
  • the side wall 13a of the part 13 comprises three slots arranged substantially parallel, a central slot 16 substantially identical to that described above, intended to receive a conductive bar 23, and two slots 24, with non-cutting parallel edges which have the sole function of giving elastic properties to the piece 13.
  • the mechanical stops corresponding to the "connected” and “disconnected” positions of the device are advantageously formed by the two edges of the slot at its two ends.
  • the operating principle is identical to that described above.
  • the metal bar is engaged as the cable or the elastic wire in the slot 16 and the piece 13 is turned so that the edges of the slot bite by their sharp edges in the thickness of the conductor.
  • FIGS. 7A, 7B, 7C illustrate another embodiment of the substantially cylindrical tubular part of the self-stripping contact element, as well as a specific use of the device 10.
  • the part 13 is composed of two parts, a part metal 30 and an insulating portion 31 shaped stud, held by two lugs 32 cut in the side wall 13a of the part 13, and which engage in two recesses 33 diametrically opposite formed in the stud constituting the insulating portion 31.
  • This part 13 is associated with a metal plate 34 in which are formed cells 35 intended to receive the lower part of the part 13.
  • this part 13 When this part 13 is engaged in the corresponding cell of the metal plate 34, it can occupy two positions illustrated respectively in Figures 7C and 7D. In the position of Figure 7C, the contact between the piece 13 and the metal plate 34 is at the insulating portion 31, the metal tabs 32 being arranged in the elongated area of the cell and having no contact with the walls of the latter and, consequently, with the metal plate 34.
  • this device makes it possible to electrically disconnect the piece 13 from the metal plate 34 at the time of introduction of a cable or electrical wire in order to connect it and to ensure electrical coupling at the moment of rotation. of the piece 13 at the same time as is the connection of the cable or the electric wire, a metal bar or the like.
  • Figures 8, 8a, 8b, 8c show a particular embodiment of the part 13 by winding and crimping.
  • the pre-cut part (FIG 8) is wound (FIG 8a, 8b, 8c), then the lips (I) at the ends are crimped at about 45 °.
  • the slot 30 forms the connection element with the strip 14, which may also be the connection range of a circuit-breaker or contactor type device, or the connection strip of FIG. 4.

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)

Claims (11)

  1. Verbindungsvorrichtung mit selbstabisolierendem Kontaktelement zur Verbindung der Leiter von Kabeln, Leiterdrähten, Stromschienen o.ä. mit einer Metall-Verbindungsschiene einer Klemme eines Vielfachklemmsystems, eines elektrischen Schaltgeräts o.ä., welches selbstabisolierende Kontaktelement ein annähernd zylindrisch und rohrförmig ausgebildetes Teil (13) umfasst, das in einer Aufnahme (12) angeordnet ist, derart dass das Teil im Inneren dieser Aufnahme um seine Symmetrieachse verdreht werden kann, wobei das Teil auf einer Seite mindestens eine in seiner Seitenwand (13a) ausgebildete Öffnung in Form eines länglichen Schlitzes (16) aufweist, welcher Schlitz mindestens einen Schneidrand umfasst und eine Öffnungsweite aufweist, die in Querrichtung gesehen von einem Längsrand des Schlitzes zum anderen von einem Wert, der mindestens dem Durchmesser des anzuschließenden Kabels oder Leiterdrahts (17) o.ä. entspricht, zu einem Wert, der maximal dem Durchmesser des Leiters dieses Kabels bzw. Leiterdrahts entspricht, kontinuierlich abnimmt, dadurch gekennzeichnet, dass die Seitenwand dieses Teils mindestens einen Bereich mit einer glatten Umfangsfläche (15) aufweist, die in engem Kontakt mit der genannten Verbindungsschiene steht (14), und dass das genannte Teil an einem seiner Enden ausgebildete Mittel aufweist, um es mit Hilfe eines Werkzeugs, wie beispielsweise eines Schlüssels oder eines Schraubendrehers verdrehen zu können.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die genannten, an einem Ende des annähernd zylinderrohrförmigen Teils (13) des selbstabisolierenden Kontaktelements ausgebildeten Mittel einen Endabschnitt (13b) mit einem Vorsprung oder einem Hohlraum (13c) aufweisen, der mindestens zwei, annähernd parallel zueinander angeordnete ebene Flächen aufweist, die das Ansetzen eines Schlüssels oder eines Schraubendrehers erlauben.
  3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass der genannte Endabschnitt (13b) einen geringeren Querschnitt aufweist als die Seitenwand (13d) des Teils (13).
  4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass sich der genannte Schlitz (16) über eine Länge erstreckt, die einem Winkel von zwischen 45° und 270°, vorzugsweise von etwa 180° entspricht.
  5. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das genannte, annähernd zylinderrohrförmige Teil (13) des Kontaktelements mehrere, annähernd parallel zueinander angeordnete Schlitze (16) aufweist.
  6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die einzelnen Schlitze (16) unterschiedliche Querabmessungen aufweisen und dazu ausgelegt sind, die Verbindung von Kabeln und/oder Leiterdrähten (17) und/oder Stromschienen unterschiedlichen Querschnitts zu gewährleisten.
  7. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das annähernd zylinderrohrförmige genannte Teil (13) des selbstabisolierenden Kontaktelements mindestens einen in seiner Seitenwand (13a) ausgebildeten zusätzlichen Schlitz (24) aufweist, um dieser Seitenwand Elastizität zu verleihen.
  8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass der genannte Schlitz (24) parallel zueinander angeordnete nicht schneidende Ränder aufweist.
  9. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das genannte, annähernd zylinderrohrförmige Teil des selbstabisolierenden Kontaktelements einen Metallteil und einen als Zapfen ausgebildeten lsolierstoffteil (31) umfasst, der durch zwei in Ausnehmungen (33) des genannten Zapfens eingreifende Metallfortsätze (32) in seiner Stellung gehalten wird, wobei das genannte Teil dazu ausgelegt ist, in Aussparungen (35) einer Metallplatte (34) eingesetzt zu werden, derart dass der elektrische Kontakt zwischen dem Teil (13) und der Metallplatte (34) je nach Stellung des Teils (13) hergestellt oder unterbrochen ist, und der physikalische Kontakt zwischen dem Teil und der Platte je nach Stellung des Teils (13) entweder im Bereich der Metallfortsätze (32) oder im Bereich des als Zapfen ausgebildeten Isolierstoffteils (31) erfolgt.
  10. Vorrichtung nach irgendeinem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass mindestens einer der Schlitze zwischen dem Einführungsbereich des Kabels und dem Verbindungsbereich mehrere Absätze (C) aufweist, die auf beiden Seiten der Mittelachse (X) des Schlitzes ausgebildet sind.
  11. Vorrichtung nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Verbindungszylinder durch Aufrollen und Crimpen eines Stanzteils hergestellt wird.
EP19980410101 1997-09-24 1998-09-11 Verbindungsvorrichtung mit Schneidklemmkontaktelement Expired - Lifetime EP0905817B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9712092A FR2768863B1 (fr) 1997-09-24 1997-09-24 Dispositif de connexion a element de contact auto-denudant
FR9712092 1997-09-24

Publications (2)

Publication Number Publication Date
EP0905817A1 EP0905817A1 (de) 1999-03-31
EP0905817B1 true EP0905817B1 (de) 2006-05-24

Family

ID=9511588

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980410101 Expired - Lifetime EP0905817B1 (de) 1997-09-24 1998-09-11 Verbindungsvorrichtung mit Schneidklemmkontaktelement

Country Status (4)

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EP (1) EP0905817B1 (de)
DE (1) DE69834608T2 (de)
ES (1) ES2263197T3 (de)
FR (1) FR2768863B1 (de)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2787676A (en) * 1955-03-21 1957-04-02 Everett J Kellogg Switch-type connector fitting for electrical appliances
CA1303170C (en) * 1988-06-24 1992-06-09 Winfield Warren Loose Cylindrical insulation displacing connector
US5254015A (en) * 1991-10-07 1993-10-19 Amp Incorporated Insulation displacing barrel terminal
US5321577A (en) * 1992-05-08 1994-06-14 The Whitaker Corporation Protector module for telephone line pair
FR2723474B1 (fr) * 1994-08-04 1997-01-03 Entrelec Sa Connexion auto-denudante a action rapide

Also Published As

Publication number Publication date
DE69834608T2 (de) 2007-01-25
EP0905817A1 (de) 1999-03-31
DE69834608D1 (de) 2006-06-29
FR2768863B1 (fr) 1999-10-22
FR2768863A1 (fr) 1999-03-26
ES2263197T3 (es) 2006-12-01

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