EP0485295B1 - Anschlussstück für elektrische Leiter, insbesondere für Erdabgriffe - Google Patents

Anschlussstück für elektrische Leiter, insbesondere für Erdabgriffe Download PDF

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Publication number
EP0485295B1
EP0485295B1 EP91403001A EP91403001A EP0485295B1 EP 0485295 B1 EP0485295 B1 EP 0485295B1 EP 91403001 A EP91403001 A EP 91403001A EP 91403001 A EP91403001 A EP 91403001A EP 0485295 B1 EP0485295 B1 EP 0485295B1
Authority
EP
European Patent Office
Prior art keywords
connecting piece
stainless steel
tubular component
connection
electrical conductors
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
EP91403001A
Other languages
English (en)
French (fr)
Other versions
EP0485295A1 (de
Inventor
Michel Vassallucci
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.)
DUCLOS CHIMIE
Original Assignee
DUCLOS CHIMIE
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 DUCLOS CHIMIE filed Critical DUCLOS CHIMIE
Publication of EP0485295A1 publication Critical patent/EP0485295A1/de
Application granted granted Critical
Publication of EP0485295B1 publication Critical patent/EP0485295B1/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
    • H01R4/58—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 characterised by the form or material of the contacting members
    • H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors
    • 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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw
    • 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
    • H01R4/58—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 characterised by the form or material of the contacting members
    • H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin

Definitions

  • the present invention relates to an element or piece for connecting electrical conductors, in particular earth connections.
  • This invention applies more specifically to the connection between them of electrical conductors having connection surfaces of a different metallic nature: for example one of these surfaces can be made of copper while the other surface is made of stainless steel.
  • connection systems generally reveal bimetallic contacts.
  • the risks of corrosion of such bimetallic contacts are well known and the use of these connection systems results in a questioning of the quality of the connections over time.
  • US-A-3,895,851 describes a connecting piece of electrical conductors where, at the connection between electrical conductors having connecting surfaces of different metallic nature, it only has contact surfaces between elements of practically identical metallic nature.
  • this invention relates to a connecting piece of electrical conductors, in particular for earth connections, in which at the connection between electrical conductors having connection surfaces of a different metallic nature, it only has contact surfaces between elements of identical or practically identical metallic nature, characterized in that it comprises least a tubular part having, on the one hand, a wall of sufficiently small thickness to be able to be easily deformed and, on the other hand, an internal surface made of a metal of a different nature from that constituting its external surface, said part tubular acting as an intermediate contact piece at the connection and receiving one of the electrical conductors to be connected.
  • said tubular part is made of stainless steel and its internal surface is made of copper.
  • this connecting piece is in the form of a cylindrical piece of stainless steel having a frustoconical bore opening onto a cylindrical cavity in which one of the conductors to be connected is positioned.
  • this cylindrical part being further provided with a transverse bore in which is housed said tubular part receiving the second conductor to be connected for example a grounding cable.
  • the connecting piece is in the form of a stainless steel sleeve provided with a bore in which said tubular part is positioned, said sleeve being further provided with a stainless steel screw to secure one of the conductors to be connected, for example an earth stake, this tightening being carried out between the end of said screw and the external wall of said tubular piece receiving the second conductor to be connected for example a grounding cable.
  • the connecting piece that is the subject of the present invention, it makes it possible to ensure the connection of an earth rod to an electric grounding cable, this cable being held in said tubular part in contact with the internal surface thereof and the end of the ground rod of earth being held in said connecting piece.
  • FIGS. 1 to 3 illustrate a first embodiment of the connection piece which is the subject of the invention.
  • This part is in the form of a connection collar making it possible, for example, to make an electrical connection between a cylindrical earth rod of stainless steel and an electric grounding cable made of copper.
  • the earth stake may in particular be of the type described in the French patent 8908405 filed June 23, 1989 by this licensee. However, this application does not of course have any limiting character.
  • the connecting piece or collar according to the invention illustrated in FIGS. 1 to 3 is in the form of a cylindrical piece 1, made of stainless steel which has a frustoconical cavity 2 which opens into a cylindrical cavity 3 perpendicular to which is provided a bore 4 intended to receive a tubular part 5.
  • This tubular part 5 is produced using the same metal as that of the electrical conductor which must be positioned in the cavities 2 and 3 of the cylindrical part 1.
  • this tubular part 5 is made of stainless steel. It has a sufficiently thin wall so that it can be easily deformed and, moreover, it has an internal surface 6 which is made of a metal identical to that of the conductor which must be positioned in said tubular part 5. Consequently, in the present application example, the internal surface 6 of the tubular piece 5 of stainless steel is made of copper.
  • connection according to the present invention comprises only contacts between contact surfaces of identical metallic nature, that is to say copper-copper (internal surface 6 of the tubular part 5 in contact with the copper cable 8) and stainless steel - stainless steel (cyl cavity 3 of the connecting piece 1 in contact with the stainless steel post 7).
  • this connecting piece is in the form of a sleeve 9 made of stainless steel and which is provided with a bore 4 ′ in which is positioned and mechanically locked a tubular piece 5 ′ identical to the tubular part 5 of the connecting part described above with reference to FIGS. 1 to 3. Consequently, this tubular part 5 ′ is made of stainless steel, it has an internal surface 6 ′ made of the same metal as that constituting the cable electric 8 ′ that it must receive (in this example it is therefore copper and its wall is thin enough to be easily distorted).
  • the sleeve 9 also includes a clamping screw 13 which is positioned perpendicular to the tubular part 5 ′ and facing the external wall of the latter so as to be able to clamp the other element to be connected (for example a pick-up stake earth) against this outer wall, as will be described below.
  • connection is made by positioning the sleeve 9 on the end of the earth stake 7 ′ and placing the end of the earth cable 8 ′ inside the tubular part 5 ′ ( Figure 5 ).
  • the tightening screw is then screwed (this operation has been shown diagrammatically by an arrow in FIG. 6), which allows on the one hand to obtain an effective mechanical locking of the earth stake 7 ′ between the free end of the screw 13 and the external wall of the tubular part 5 ′ and on the other hand to effect an effective mechanical locking of the earthing cable 8 ′ inside the tubular element 5 ′ whose sufficiently thin wall s 'is deformed during this tightening operation of the screw 13 as can be seen in Figure 6.
  • connection according to the present invention only comprises contacts between contact surfaces of identical metallic nature, that is to say copper-copper (internal surface 6 ′ of the tubular part 5 ′ in contact with the copper cable 8 ′) And stainless steel-stainless steel (a internal damage of the connection sleeve 9 in contact with the post 7 ′ of stainless steel).

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Insulated Conductors (AREA)
  • Multi-Conductor Connections (AREA)
  • Communication Cables (AREA)

Claims (5)

  1. Anschlußstück für elektrische Leiter, insbesondere für Erdabgriffe, bei welchem auf der Höhe des Anschlusses zwischen den elektrischen Leitern (7, 8; 7′, 8′), welche Anschlußflächen aus verschiedengeartetem Metall aufweisen, nur Kontaktflächen zwischen Elementen von identisch oder praktisch identisch geartetem Metall vorgesehen sind, dadurch gekennzeichnet, daß es mindestens ein röhrenartiges Teil (5, 5′) umfaßt, das einerseits eine Seitenwand mit einer Dicke aufweist, die genügend gering ist, um leicht deformiert werden zu können, und andererseits eine Innenfläche (6, 6′) aufweist, welche aus einem Metall gebildet ist, das verschieden von demjenigen ist, das seine Außenfläche bildet, wobei das röhrenartige Teil die Rolle eines Kontaktzwischenstückes auf der Höhe des Anschlusses spielt und einen der zu verbindenden elektrischen Leiter (8, 8') aufnimmt.
  2. Anschlußstück nach Anspruch 1, dadurch gekennzeichnet, daß das röhrenartige Teil (5, 5′) aus rostfreiem Stahl ist und seine Innenfläche (6, 6') aus Kupfer ist.
  3. Anschlußstück nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß es in Form eines Zylinderstückes (1) aus rostfreiem Stahl vorliegt, das eine kegelstumpfartige Bohrung aufweist, die in einen zylinderischen Hohlraum (3) mündet, der zur Aufnahme eines der zu verbindenden Leiter, insbesondere eines Erdabgriffes (7) geformt ist, wobei dieses Stück mit einer Querbohrung (4) versehen ist, in welcher dieses röhrenartige Teil (5) vorgesehen ist, welches den zweiten zu verbindenden elektrischen Leiter (8) aufnimmt.
  4. Anschlußstück nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß es die Form eines Klemmrahmens (9) aus rostfreiem Stahl mit einer Bohrung (4') vorliegt, in welcher das röhrenartige Teil (5') angeordnet ist, wobei der Klemmrahmen außerdem mit einer Schraube (13) aus rostfreiem Stahl versehen ist, um die Befestigung eines der zu verbindenden Leiter (7') sicherzustellen, wobei die Befestigung bewirkt wird durch das Ende der Schraube und der äußeren Zwischenwand des röhrenartigen Teiles, in welchem der zweite zu verbindende Leiter (8′) mechanisch festgehalten ist.
  5. Anschlußstück nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß es anwendbar ist auf einen Erdabgriff (7, 7′), wobei der Anschluß zwischen dem Abgriff aus nicht rostendem Stahl und einem elektrischen Kabel zur Erdung (8, 8′) aus Kupfer sichergestellt ist, wobei das Kabel in dem röhrenartigen Teil (5, 5′) in Kontakt mit der inneren Fläche des röhrenartigen Teiles und dem Ende des Erdabgriffes in Kontakt steht, welcher mechanisch in dem Einschlußstück (1, 9) gehalten ist.
EP91403001A 1990-11-07 1991-11-07 Anschlussstück für elektrische Leiter, insbesondere für Erdabgriffe Expired - Lifetime EP0485295B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9013805 1990-11-07
FR9013805A FR2668861B1 (fr) 1990-11-07 1990-11-07 Piece de raccordement de conducteurs electriques, notamment pour prise de terre.

Publications (2)

Publication Number Publication Date
EP0485295A1 EP0485295A1 (de) 1992-05-13
EP0485295B1 true EP0485295B1 (de) 1995-04-19

Family

ID=9401939

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91403001A Expired - Lifetime EP0485295B1 (de) 1990-11-07 1991-11-07 Anschlussstück für elektrische Leiter, insbesondere für Erdabgriffe

Country Status (4)

Country Link
EP (1) EP0485295B1 (de)
AT (1) ATE121569T1 (de)
DE (1) DE69109056D1 (de)
FR (1) FR2668861B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2320697A (en) * 1996-12-24 1998-07-01 Motorola Ltd Crimping arrangement, method and tool
DE102004050001A1 (de) * 2004-10-14 2006-04-20 Contitech Techno-Chemie Gmbh Crimpverbindung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE570193A (de) *
FR875114A (fr) * 1941-05-06 1942-09-07 Comp Generale Electricite Perfectionnement aux bornes de connexion
US2780794A (en) * 1953-07-15 1957-02-05 Int Standard Electric Corp Pressure connector
IL31854A (en) * 1968-04-12 1972-07-26 Amp Inc Terminals for weld connection to electrical conductor wires
US3895851A (en) * 1973-08-23 1975-07-22 Amp Inc Brittle-surfaced connector
US4156793A (en) * 1977-06-27 1979-05-29 Carlson Fred B Ground rod assembly

Also Published As

Publication number Publication date
ATE121569T1 (de) 1995-05-15
DE69109056D1 (de) 1995-05-24
FR2668861B1 (fr) 1995-06-02
EP0485295A1 (de) 1992-05-13
FR2668861A1 (fr) 1992-05-07

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