EP1014401B1 - Vorrichtung zum elektrischen Verbinden einer Kabelflechte mit einem elektrischen Kontakt insbesondere in einem Schalter, Kontakt und Kontakthalterung für diese Verbindung sowie ein die Vorrichtung enthaltendes Schaltgerät - Google Patents

Vorrichtung zum elektrischen Verbinden einer Kabelflechte mit einem elektrischen Kontakt insbesondere in einem Schalter, Kontakt und Kontakthalterung für diese Verbindung sowie ein die Vorrichtung enthaltendes Schaltgerät Download PDF

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Publication number
EP1014401B1
EP1014401B1 EP99410165A EP99410165A EP1014401B1 EP 1014401 B1 EP1014401 B1 EP 1014401B1 EP 99410165 A EP99410165 A EP 99410165A EP 99410165 A EP99410165 A EP 99410165A EP 1014401 B1 EP1014401 B1 EP 1014401B1
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EP
European Patent Office
Prior art keywords
contact
sliding
opening
braided strip
designed
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
EP99410165A
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English (en)
French (fr)
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EP1014401A1 (de
Inventor
Noel Schneider Electric Industries Sa Le Corre
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
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Schneider Electric Industries SAS
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Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP1014401A1 publication Critical patent/EP1014401A1/de
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Publication of EP1014401B1 publication Critical patent/EP1014401B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5822—Flexible connections between movable contact and terminal
    • 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
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4811—Spring details

Definitions

  • the invention relates to a device for electrical connection of a braid or the like on an electrical contact, in particular in a circuit breaker, an electrical contact and a contact carrier adapted to such a connection and a switching device such as a circuit breaker incorporating such a device.
  • a circuit breaker contains, in a manner known per se, a breaking chamber accommodating a fixed contact and a movable contact, an electromagnetic trigger capable of triggering the mechanism of the circuit breaker and thus causing the separation of the contacts during the appearance of a current. short circuit and a thermal trigger capable of triggering the mechanism when the occurrence of a current overload.
  • the moving contact is supported by a contact carrier mechanically connected to the circuit breaker mechanism, and is electrically connected to a braid itself electrically connected to a bimetallic strip belonging to the thermal trip unit.
  • the fixing of the movable contact on the contact carrier is carried out by introducing the movable contact into a recess provided for this purpose in the contact holder, then by carrying out the melting of the plastic material of the contact carrier around the contact. mobile.
  • the electrical connection between the movable contact and the braid is made by soldering the braid on said contact.
  • the present invention solves this problem and proposes a device for electrically connecting a braid on a contact making it possible to reduce the connection time and thus to perform the two operations respectively of connecting the braid and fixing the contact on the contact carrier. in a particularly short time.
  • the present invention relates to a connection device of the kind mentioned above, this device being characterized in that it comprises a slot formed at one end of the electrical contact, said slot being delimited by two opposite edges. forming at the end of the contact two substantially parallel branches and in that means are provided in part on the contact carrier and in part on the contact for retaining by wedging said braid between the aforementioned edges of the slot after the attachment of the contact on the contact carrier.
  • the aforementioned fixing means comprise a first opening provided in the contact carrier and intended to slidably receive said contact, and means for definitively fixing the contact in the contact carrier used at the end of sliding.
  • the inner wall of the aforementioned opening cooperates with the outer wall of the contact so that at the end of the sliding of the contact inside the contact carrier, the two branches ensure the retention of the braid between said edges.
  • the present invention further relates to an electrical contact formed mainly by an elongated portion, said elongated portion having at one of its ends a contact portion and at its opposite end, a slot extending substantially parallel to the longitudinal direction of the contact, said slot defining two branches capable of being deformed elastically.
  • a contact carrier comprising an opening intended to receive the end of a braid and an opening adapted to slidably receive a contact, said braid being intended to be electrically connected to said contact by means of a device comprising the previously described features taken alone or in combination.
  • the invention also relates to an electrical switching device comprising a breaking chamber, said chamber containing a fixed contact adapted to cooperate with a movable contact, said movable contact being supported by a contact carrier and electrically connected to a braid, said characterized in that the braid is electrically connected to said contact by means of a device having the preceding characteristics taken alone or in combination.
  • FIG. 1 we see a low voltage circuit breaker D for use in an electrical network to ensure the protection of said network against overloads or short circuits.
  • This apparatus comprises, in a manner known per se, a pair of detachable contacts 1.2 respectively fixed and movable, a control mechanism C of opening and closing of the circuit breaker actuated by a lever M, an electromagnetic release E intended to trigger the mechanism of the circuit breaker and thus cause the opening of the contacts 1.2 at the occurrence of a short-circuit current and a thermal trigger T able to trigger the mechanism when the occurrence of a current overload.
  • the electromagnetic trigger E is of the known type and mainly comprises a coil 3 through which the current to be monitored and able to act, via a movable core 4 slidably mounted inside the coil 3, on a striker 5 mechanically connected to a trigger lever 6 to cause the separation of the contacts 1,2 in the event of a short circuit.
  • the thermal trip unit T is also of the known type and comprises a bimetallic strip 7, the movement of bimetallic strip 7 following a current overload being capable of generating the separation of the contacts 1, 2.
  • the bimetallic strip 7 is connected, by one end 7a, to one end 9a of a braid 9 whose opposite end 9b is electrically connected to the movable contact 2.
  • This movable contact 2 is mounted in a door -contact 10 for cooperating with the release lever 6.
  • the movable contact 2 is fixed to the contact carrier 10 by fixing means which will be described in what follows.
  • the movable contact 2 is formed by an elongated part having at one of its ends a contact portion 11 and at its opposite end 2b a slot 12 extending substantially parallel to the longitudinal direction of the part and forming, at this end 2b of said contact 2, two substantially parallel branches 13,14. These two branches 13, 14 have at their free ends, latching means 15.
  • the fixing means of the movable contact 2 on the contact carrier 10 comprise, on the one hand, a first opening 16 formed in the contact carrier 10 and adapted to slidably receive said contact 2 introduced by its end 2b having the slot 12 and on the other hand, the aforementioned latching means 15 intended to cooperate with wall portions 20,21 of the contact carrier 10 provided in the opening 16 and extending perpendicular to the sliding direction T of the contact to the inside said opening 16.
  • the contact carrier 10 also comprises a second opening 18 intended to receive the end 9b of a braid 9.
  • the first and second openings 16 and 18 are shaped so that the direction D, T, respectively, of introduction of the braid 9 and contact 2 are perpendicular.
  • the second opening 18 is also shaped so as to immobilize the braid 9 perpendicular to the insertion direction D of the braid and parallel to the sliding direction T of the contact 2, and is located so that the end 9b of the braid 9, when introduced into the second opening 18, is in the sliding path of the contact 2.
  • the shape of the first opening 16 corresponds substantially to that of the part of the movable contact 2 comprising the slot 12, and the movable contact 2 is made of a material having a certain elasticity.
  • the aforementioned snap-fastening elements 15 are formed by beak-shaped retaining elements 19 extending towards the outside of the contact 2 perpendicularly to the sliding direction T of the contact, and are intended to bear at the end of the stroke. sliding, on respectively two surface portions 20,21 of said opening 16 of the contact carrier 10, extending perpendicularly to the sliding direction T.
  • the braid 9 is introduced by a 9b of its ends into the opening 18 provided for this purpose in the contact carrier 10.
  • the movable contact 2 is introduced into the opening 16, called first, the contact carrier 10 by its end 2b having the slot 12 and is driven to slide inside said opening 16.
  • the retaining elements 19 slide along the wall of the opening 16.
  • the moving contact 2 arrives at the level of the braid 9, the latter enters the slot 12.
  • the retaining elements 19 cooperate with the corresponding wall portions 20,21 located at one of the ends of the opening 16, to prevent the withdrawal of the contact 2 from said opening and ensure the final fixing of the contact 2 in the contact carrier 10.
  • the braid 9 is at the bottom of the slot 12 between two close edges 12a, 12b of said slot 12.
  • the inner wall delimiting the aforementioned opening 16 cooperates with the outer wall of the contact 2 so that in the sliding end position of the contact, the end of the braid 9 is positively retained by wedging between said edges 12a, 12b, or sdi branches 13,14 slightly close together, and the electrical connection of the braid 9 on the contact 2 is thus achieved.
  • the welding operation of the braid is removed and the electrical connection of the braid and the attachment of the contact on the contact carrier are made in a single operation.
  • This therefore makes it possible to significantly reduce the cost price per unit of the apparatuses in which the invention is implemented.
  • Another advantage inherent in the invention is that, since it is no longer necessary to merge the material of the contact carrier around the moving contact, this contact carrier can be made to be lighter.
  • the attachment of the contact could be made otherwise than by sliding and latching, for example by sliding of the movable contact in the opening of the contact carrier and screwing the contact on the contact carrier.
  • the invention thus applies to any device for making the connection of a braid to a contact by wedging said braid between the two edges of a slot in said contact, during the fixing operation.
  • the invention can advantageously, but not exclusively, be used in miniature circuit breakers having a size ranging from 10 to 25 A.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Claims (12)

  1. Anordnung zur elektrischen Verbindung eines flexiblen Leitungsbandes o.ä. mit einem durch Befestigungsmittel auf einem Kontaktträger befestigten elektrischen Kontakt, insbesondere in einem Leistungsschalter, dadurch gekennzeichnet, dass sie einen, an einem (2b) der Enden des elektrischen Kontakts (2) ausgebildeten Schlitz (12) umfasst, welcher Schlitz (12) durch zwei einander gegenüberliegende Ränder (12a, 12b) begrenzt wird, die am Ende des Kontakts (2) zwei annähernd parallel zueinander verlaufende Schenkel (13, 14) bilden, und dass teilweise am Kontaktträger (10) und teilweise am Kontakt (2) selbst Mittel (16) ausgebildet sind, um nach Befestigung des Kontakts (2) auf dem Kontaktträger (10) das genannte flexible Leitungsband (9) durch Einklemmen zwischen den genannten Rändern (12a, 12b) des Schlitzes (12) zu halten.
  2. Anordnung nach Anspruch 1, dadurch gekennzeichnet, dass die genannten Befestigungsmittel eine im Kontaktträger (10) ausgebildete erste Öffnung (16) zum Einschieben des genannten Kontaktes (2) sowie Mittel (15) zur endgültigen Befestigung des Kontakts im Kontaktträger umfassen, die am Ende des Einschubvorgangs wirksam werden.
  3. Anordnung nach Anspruch 2, dadurch gekennzeichnet, dass die die genannte Öffnung (16) begrenzende Innenwand des Kontaktträgers mit der Außenwand des Kontakts (2) zusammenwirkt, derart dass in der Endlage des Kontakts (2) nach dessen vollständigem Einschieben in den Kontaktträger (10) die beiden Schenkel (13, 14) das Halten des flexiblen Leitungsbands (9) zwischen den genannten Rändern (12a, 12b) gewährleisten.
  4. Anordnung nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass der Kontaktträger (10) eine zweite Öffnung (18) zur Aufnahme eines (9b) der Enden des flexiblen Leitungsbands (9) aufweist, die so angeordnet ist, dass sie eine Verschiebung des genannten flexiblen Leitungsbands (9) in einer annähernd senkrecht zur Einführungsrichtung D des genannten Endes (9b) verlaufenden Richtung verhindert, wobei die genannte Richtung D annähernd senkrecht zur Einschubrichtung T des Kontakts (2) verläuft und das genannte Leitungsbandende (9b) in der Einschubbahn des Kontakts (2) liegt.
  5. Anordnung nach irgendeinem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass die Mittel zur endgültigen Befestigung Schnappmittel (15) umfassen, die am Ende der beiden Schenkel (13, 14) ausgebildet sind und dazu dienen, mit der Innenwand der ersten Öffnung (16) zusammenzuwirken, um nach vollständigem Einschieben des Kontakts (2), in der elektrischen Verbindungsstellung des flexiblen Leitungsbands (9), ein Zurückziehen des Kontakts (2) aus der ersten Öffnung (16) des Kontaktträgers (10) zu verhindern.
  6. Anordnung nach Anspruch 5, dadurch gekennzeichnet, dass der Kontakt aus einem Material mit einer gewissen Elastizität besteht und dass die Schnappmittel (15) am Ende der Schenkel (13, 14) ausgebildete und annähernd senkrecht zur Einschubrichtung T des Kontakts (2) verlaufende Rückhalteelemente (19) umfassen, wobei die genannten Elemente (19) dazu dienen, beim Einschieben des Kontakts (2) auf den Wänden der ersten Öffnung (16) entlangzugleiten und am Ende des Einschubhubs mit senkrecht zur Einschubrichtung T angeordneten Innenwandabschnitten (20, 21) der ersten Öffnung (16) zusammenzuwirken.
  7. Anordnung nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der genannte Kontakt (2) ein so genannter beweglicher Kontakt ist, der dazu dient, in einem elektrischen Schaltgerät D mit einem feststehenden Kontakt (1) zusammenzuwirken, um einen Stromkreis zu schließen oder zu öffnen.
  8. Elektrischer Kontakt zur Verbindung mit einem flexiblen Leitungsband durch eine Anordnung nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet dass er hauptsächlich aus einem länglichen Teil besteht, welches längliche Teil an einem (2a) seiner Enden ein Kontaktteil (11) und an seinem gegenüberliegenden Ende (2b) einen Schlitz (12) aufweist, der annähernd parallel zur Längsachse des Kontakts (2) verläuft, wobei der genannte Schlitz (12) durch zwei Schenkel (13, 14) begrenzt wird, die elastisch verformbar sind.
  9. Kontakt nach Anspruch 8, dadurch gekennzeichnet, dass an den freien Enden der Schenkel (13, 14) Schnappmittel (15) ausgebildet sind.
  10. Kontaktträger mit einer Öffnung (18) zur Aufnahme des Endes (9b) eines flexiblen Leitungsbands (9) sowie einer Öffnung (16), in die ein Kontakt (2) eingeschoben werden kann, wobei das genannte flexible Leitungsband (9) dazu dient, durch eine Anordnung nach irgendeinem der Ansprüche 2 bis 7 elektrisch mit dem genannten Kontakt (2) verbunden zu werden.
  11. Elektrisches Schaltgerät, insbesondere mit einer Lichtbogenlöschkammer, welche Lichtbogenlöschkammer einen feststehenden Kontakt (1) enthält, der dazu dient, mit einem beweglichen Kontakt (2) zusammenzuwirken, wobei der genannte bewegliche Kontakt (2) auf einem Kontaktträger (10) montiert und elektrisch mit einem flexiblen Leitungsband (9) verbunden ist, dadurch gekennzeichnet, dass das flexible Leitungsband durch eine Anordnung nach irgendeinem der Ansprüche 1 bis 7 elektrisch mit dem genannten Kontakt (2) verbunden ist.
  12. Schaltgerät nach Anspruch 11, dadurch gekennzeichnet, dass das Schaltgerät als Leistungsschalter D ausgebildet ist.
EP99410165A 1998-12-23 1999-11-22 Vorrichtung zum elektrischen Verbinden einer Kabelflechte mit einem elektrischen Kontakt insbesondere in einem Schalter, Kontakt und Kontakthalterung für diese Verbindung sowie ein die Vorrichtung enthaltendes Schaltgerät Expired - Lifetime EP1014401B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9816580A FR2787930B1 (fr) 1998-12-23 1998-12-23 Dispositif de raccordement electrique d'une tresse a un contact electrique notamment dans un disjoncteur, contact et porte-contact adaptes a un tel raccordement et appareil de coupure incorporant un tel dispositif
FR9816580 1998-12-23

Publications (2)

Publication Number Publication Date
EP1014401A1 EP1014401A1 (de) 2000-06-28
EP1014401B1 true EP1014401B1 (de) 2006-02-01

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EP99410165A Expired - Lifetime EP1014401B1 (de) 1998-12-23 1999-11-22 Vorrichtung zum elektrischen Verbinden einer Kabelflechte mit einem elektrischen Kontakt insbesondere in einem Schalter, Kontakt und Kontakthalterung für diese Verbindung sowie ein die Vorrichtung enthaltendes Schaltgerät

Country Status (4)

Country Link
EP (1) EP1014401B1 (de)
DE (1) DE69929671T2 (de)
ES (1) ES2257848T3 (de)
FR (1) FR2787930B1 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3268689A (en) * 1964-10-22 1966-08-23 Gen Electric Electric circuit breaker with novel flexible braid attachment
DE2517465C3 (de) * 1975-04-19 1978-12-07 Bach & Co, 7100 Heilbronn Steckverbinder
DE29818571U1 (de) * 1998-10-17 1998-12-17 Stocko Metallwarenfabriken Henkels & Sohn GmbH & Co, 42327 Wuppertal Kontaktelement

Also Published As

Publication number Publication date
FR2787930B1 (fr) 2001-11-23
DE69929671D1 (de) 2006-04-13
DE69929671T2 (de) 2006-09-07
ES2257848T3 (es) 2006-08-01
EP1014401A1 (de) 2000-06-28
FR2787930A1 (fr) 2000-06-30

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