EP0148051B1 - Verfahren und Einrichtung zum festen elektrischen Verbinden von Litzen auf Stromzufuhrflächen - Google Patents

Verfahren und Einrichtung zum festen elektrischen Verbinden von Litzen auf Stromzufuhrflächen Download PDF

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Publication number
EP0148051B1
EP0148051B1 EP84402425A EP84402425A EP0148051B1 EP 0148051 B1 EP0148051 B1 EP 0148051B1 EP 84402425 A EP84402425 A EP 84402425A EP 84402425 A EP84402425 A EP 84402425A EP 0148051 B1 EP0148051 B1 EP 0148051B1
Authority
EP
European Patent Office
Prior art keywords
conductors
lug
braids
slots
several
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
Application number
EP84402425A
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English (en)
French (fr)
Other versions
EP0148051A1 (de
Inventor
Jean-Paul Favre-Tissot
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin 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 Merlin Gerin SA filed Critical Merlin Gerin SA
Priority to AT84402425T priority Critical patent/ATE32290T1/de
Publication of EP0148051A1 publication Critical patent/EP0148051A1/de
Application granted granted Critical
Publication of EP0148051B1 publication Critical patent/EP0148051B1/de
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
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
    • 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
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
    • H01H1/226—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member having a plurality of parallel contact bars
    • 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

Definitions

  • the invention relates to a method of fixed electrical connection of flexible conductors such as braids, of large cross section on the end of a current supply area of flattened cross section.
  • High current cut-off devices for example of a few thousand Amps, include flexible conductors, in this case shunts or braids, for connecting the mobile part, in particular mobile contact fingers and the current supply range.
  • the end of these flexible conductors is generally secured to the upper surface of the current supply range by welding or by tightening with bolts.
  • the method according to the present invention aims to allow a fixed connection of flexible conductors, in particular of braids, of large section, on a flattened area.
  • the method according to the invention is a method of fixed electrical connection of flexible conductors to a part by electrical welding by resistance of at least one conductor placed in a notch of said part, characterized in that the conductors are flexible conductors of high section, such as braids, intended to be fixed on the end of a current supply area of flattened section, several notches, the section of which corresponds to that of the associated conductor or conductors being provided in the edge of the end of the pad and separated laterally by teeth liable to deform, the ends of the conductors being introduced without play in the notches, then electrically welded by resistance to said pad, so that said teeth are deformed during welding and compress the ends of the conductors.
  • the conductors are flexible conductors of high section, such as braids, intended to be fixed on the end of a current supply area of flattened section, several notches, the section of which corresponds to that of the associated conductor or conductors being provided in the edge of the end of the pad and separated laterally by teeth liable
  • notches of greater or lesser depth it is possible to increase the fixing surface of the flexible conductors and to provide housings receiving ends of these flexible conductors, in particular braids. Subsequently, the flexible conductors will be called braids, other types of conductors can of course be used.
  • the electrical and mechanical connection of the braids to the pad is carried out in a high capacity welding press capable of deforming the teeth defined by the notches in order to compress and grip the ends of the braids in the notches and to perform welding without the addition of solder.
  • the absence of tin or another solder prevents the diffusion of tin in the braid and a stiffening of the latter.
  • the edge of the current supply range can be cut into slots over its entire width to define a series of notches, each of which receives the end or ends of one or more braids juxtaposed or superimposed in the notch.
  • the housing of the braids in the notches facilitates their positioning and allows the connection of all the braids to the current supply range by a single operation requiring no annealing. This crenellated cutting reduces the section of the projecting teeth which allows their deformation under the compression force exerted by the press and a compression of the ends of the braids engaged between the teeth.
  • the invention also relates to a device for electrical connection of a plurality of braids, in particular for connecting the contact fingers of an electrical switching device to a current supply range.
  • a device for electrical connection of a plurality of braids in particular for connecting the contact fingers of an electrical switching device to a current supply range.
  • connection braids which can be connected to one or more movable contact fingers, is fixed to the current supply range by housing, according to the present invention, the ends of these braids in notches formed in the end of the beach.
  • the notch connection according to the invention has made it possible to fix on a thin area 45 mm wide by 8 mm thick five braids each having a section of 40 mm square.
  • the braid section connected to the deck can also be increased by increasing the depth of the notches.
  • the braids extend at the exit of the notches in the extension of the range, or according to a preferred embodiment perpendicular to the range. When connecting a large number of braids on the same range, it is better to accommodate several braids in the same notch than to increase the number of notches by reducing the width of the teeth which could weaken the whole .
  • a movable contact 10 of a high current cut-off device for example of an electric circuit breaker of the type described in French patent No. 2,484,136, cooperates with a fixed contact 12. These contacts are connected respectively to a current supply range 14 and to starting range 16, the movable contact 10 can be moved to the open position to interrupt the current.
  • the movable contact 10 designed for nominal intensities of several thousand amperes consists of five fingers 18 mounted on the same axis 20 secured to a contact carrier (not shown) actuated by the circuit breaker mechanism. Each finger or contact 18 has lamellae 22, 24, the number of these lamellae obviously being able to be different.
  • the movable contact 10 is connected to the pad 14 by five braids 26, each associated with one of the contact fingers 18.
  • the end 28 of the braid 26 is engaged in a notch 30 formed in the rear part of the contact finger 18, the fixing being carried out by soldering with tin.
  • the opposite end 32 is connected to the current supply range 14 by pressure welding in notches 34, 36, 38.
  • the range 14 of a section of 8 x 45 mm has on the edge 40 three notches 34, 36, 38 in the form of notches crossing the entire height of the area 14.
  • the notches 34, 36, 38 in the form of slots are delimited by teeth 42, the end notches 34 , 38 each receiving two braids 26, while the notch in the middle 36 receives the end 32 of a single braid.
  • the width of the end notches 34, 38 is of course greater than that of the notch 36.
  • the braids are introduced into the notches 34, 36, 38 so as to extend perpendicular to the area 14, a different arrangement, in particular of alignment of the braid 26 with the pad 14, being conceivable.
  • FIGS. 3 and 4 which illustrate the method of welding the braids 26 to the pad 14, it can be seen that the latter is taken between the jaws 44 of a welding press, the notched part being projecting in look of the press's mobile electrode 46.
  • the braids 26 are placed in the notches 34, 36, 38, this positioning being effected by simple insertion of the ends 32 in the notches before the electric 46 is applied to the edge 40 of the track 14.
  • L electrode 46 covers the entire edge 40 and under the high pressure which can reach several thousand kilos and under the effect of electric heating, the intensity of the current being able to be several tens of thousands of amperes, the teeth 42 are crushed in compressing and welding the braids in the notches 34, 36, 38.
  • the welding is carried out by heating and compression without the addition of solder and without annealing.
  • the crushed or flared shape of the teeth 42 under the effect of the pressure is illustrated by FIGS. 4 and 5.
  • the ends 32 housed in the same notch 34, 38 can be juxtaposed as shown in the figures, or superimposed, the depth of the notch 34, 38 then being appropriate to the number of ends 32 superimposed. It is clear that the ends 32 housed in the same notch 34, 38 may belong to braids 26 connected to the same contact finger 18, which makes it possible to reduce the section of these braids 26, or that any other arrangement is conceivable.
  • the section of the notches 34, 36, 38 is adapted to that of the ends 32 so that the latter are accommodated without play in the notches before the welding operation.
  • the welding connection according to the invention does not increase the size of the connection pad 14 and it retains the flexibility of the braids 26 which makes it possible to limit their length.
  • the method according to the invention is particularly suitable for welding copper braids 26 on copper pads 14, but it is applicable to different materials for welding on aluminum pads. This method is particularly advantageous for fixing several braids 26 to the same area 14, but it would not go beyond the scope of the invention to apply it for fixing a single braid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Breakers (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Control Of El Displays (AREA)
  • Multi-Conductor Connections (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Claims (9)

1. Verfahren zum festen elektrischen Verbinden von flexiblen Leitern mit einem Teil durch Widerstandsschweissung von mindestens einem in einem Schlitz des genannten Teiles angeordneten Leiter, dadurch gekennzeichnet, dass die Leiter (26) flexible Leiter mit grossem Durchschnitt sind, so wie Litzen, die dazu bestimmt sind, auf dem Ende einer Stromzuführfläche (14) mit abgeflachtem Durchschnitt befestigt zu werden, wobei mehrere Schlitze (34, 36, 38), deren Durchschnitt dem Durchschnitt des oder der zugeordneten Leiter entspricht, in dem Endabschnitt der Stromzuführfläche vorgesehen sind und seitlich durch Zähne (42) getrennt sind, die sich verformen können, wobei die Enden der Leiter ohne Spiel in die Schlitze eingefügt sind und dann elektrisch durch Widerstand an die genannte Stromzuführfläche geschweisst sind, so dass die genannten Zähne beim Schweissen verformt werden und die Enden der Leiter zusammenpressen.
2. Verfahren gemäss Anspruch 1, dadurch gekennzeichnet, dass man eine Reihe von Schlitzen (34, 36, 38) längs des genannten Abschnittes (40) anbringt, um einen Kamm zu bilden, zwischen dessen Zähnen (42) die flexiblen, zu verbindenden Leiter (26) eingefügt sind, wobei der mit Leitern bestückte Kamm in eine Presse (44, 46) plaziert und erwärmt wird, um in einem einzigen Vorgang die Befestigung der gesamten genannten flexiblen Leiter auszuführen.
3. Verfahren gemäss Anspruch 1 oder 2, dadurch gekennzeichnet, dass die rechteckigen Schlitze (34, 36, 38) die Dicke der genannten Stromzuführungsfläche (14) vollkommen durchdringen und dabei auf drei Seiten offen sind, in diesem Fall die grossen oberen und unteren Seiten und die Vorderseite der Stromzuführungsfläche, und dass die flexiblen Leiter (26) in die Schlitze eingefügt sind, so um sich senkrecht zu den genannten grossen Seiten zu erstrekken.
4. Verfahren gemäss Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass die Litzen (26) und die Stromzuführungsfläche (14) aus Kupfer sind, und dass die Schweissung ohne Hartlotauftrag ausgeführt ist.
5. Verfahren gemäss Anspruch 4, dadurch gekennzeichnet, dass der Schweiss-Druck mehrere tausend Kilogramm je Quadratzentimeter und die Schweiss-Stromstärke mehrere Zehntausende Ampere beträgt.
6. Vorrichtungn zum elektrischen Verbinden von flexiblen Leitern mit einem Teil, mit wenigstens einem Schlitz zum Unterbringen des Endes eines Leiters, das elektrisch durch Widerstand an das genannte Teil geschweisst ist, dadurch gekennzeichnet, dass die Leiter (26) flexible Leiter mit grossem Durchschnitt sind, so wie Litzen, wobei das genannten Teil von einer Stromzuführfläche (14) mit flachgedrücktem Durchschnitt gebildet wird, und wobei mehrere Schlitze (34, 36, 38), deren Durchschnitt dem Durchschnitt des oder der zugeordneten Leiter entpricht, in dem Endabschnitt (40) der Stromzuführfläche angeordnet sind und seitlich durch Zähne (42) getrennt sind, die sich verformen können, so dass die Enden der Leiter ohne Spiel in die Schlitze eingefügt sind und dann elektrisch durch Widerstand an die genannte Stromzuführfläche geschweisst sind, und damit die genannten Zähne beim Schweissen verformen, welche die Enden der Leiter zusammenpressen.
7. Verbindungsvorrichtung gemäss Anspruch 6, mit Verbindungslitzen (26) einer Stromzuführfläche (14) an eine Mehrzahl von Fingern (18) eines beweglichen Kontaktes (10) eines elektrischen Schalters, dadurch gekennzeichnet, dass mehrere, mit einem oder mehreren Fingern (18) verbundenen Litzen (26) in einem selben Schlitz (34, 38) untergebracht sind.
8. Verbindungsvorrichtung gemäss Anspruch 7, dadurch gekennzeichnet, dass die Enden (32) der in einem selben Schlitz (34, 38) untergebrachten Litzen (26) in dem genannten Schlitz übereinander und/ oder nebeneinander angeordnet sind.
9. Verbindungsvorrichtung gemäss Anspruch 6, 7 oder 8, dadurch gekennzeichnet, dass sich die Litzen (26) senkrecht zu der Stromzuführfläche (14) erstrecken, am Ausgang der Schlitze (34, 36, 38), um sich schleifenmässig an die Kontaktfinger (18) anzuschliessen, die ungefähr mit der Stromzuführfläche (14) ausgerichtet sind.
EP84402425A 1983-12-13 1984-11-28 Verfahren und Einrichtung zum festen elektrischen Verbinden von Litzen auf Stromzufuhrflächen Expired EP0148051B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84402425T ATE32290T1 (de) 1983-12-13 1984-11-28 Verfahren und einrichtung zum festen elektrischen verbinden von litzen auf stromzufuhrflaechen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8320089A FR2556515B1 (fr) 1983-12-13 1983-12-13 Procede et dispositif de connexion electrique fixe de tresses sur des plages d'amenee de courant
FR8320089 1983-12-13

Publications (2)

Publication Number Publication Date
EP0148051A1 EP0148051A1 (de) 1985-07-10
EP0148051B1 true EP0148051B1 (de) 1988-01-27

Family

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Family Applications (1)

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EP84402425A Expired EP0148051B1 (de) 1983-12-13 1984-11-28 Verfahren und Einrichtung zum festen elektrischen Verbinden von Litzen auf Stromzufuhrflächen

Country Status (10)

Country Link
US (1) US4583065A (de)
EP (1) EP0148051B1 (de)
JP (1) JPS60140623A (de)
AT (1) ATE32290T1 (de)
AU (1) AU567469B2 (de)
CA (1) CA1234857A (de)
DE (1) DE3469118D1 (de)
ES (2) ES8607635A1 (de)
FR (1) FR2556515B1 (de)
ZA (1) ZA849618B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1495518B2 (de) † 2002-04-12 2010-09-22 ABB S.p.A. Verbindung eines flexiblen leiters mit einer verbindungsklemme und verfahren dafür

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FR2665026B1 (fr) * 1990-07-19 1992-09-18 Merlin Gerin Procede de connexion par soudage d'un conducteur flexible a un doigt de contact, et structure de contact electrique a plusieurs lamelles.
FR2676674B1 (fr) * 1991-05-21 1995-05-12 Merlin Gerin Procede d'assemblage par soudage de deux pieces massives en cuivre et assemblage realise par un tel procede.
US5126708A (en) * 1991-07-25 1992-06-30 General Electric Company Molded case circuit breaker braid conductor with strain relief
US5286934A (en) * 1991-09-23 1994-02-15 General Electric Company Molded case circuit breaker movable contact arm arrangement
US5367276A (en) * 1993-10-18 1994-11-22 General Electric Method case circuit breaker movable contact arm arrangement
DE19636237A1 (de) * 1996-06-21 1998-01-02 Siemens Ag Schaltkontaktsystem eines Niederspannungs-Leistungsschalters mit biegsamen Leitern
DE19902836A1 (de) * 1999-01-20 2000-07-27 Siemens Ag Verfahren zur Verbindung eines Kontaktkörpers und eines flexiblen Leiters sowie Preßform zur Durchführung des Verfahrens
DE10352325B4 (de) * 2003-11-06 2013-11-07 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Herstellen einer elektrisch leitenden Verbindung u. Kontaktteil mit einer derart hergestellten elektrischen Verbindung
JP2008041252A (ja) * 2005-12-13 2008-02-21 Mitsubishi Electric Corp 回路遮断器
FR2987220B1 (fr) * 2012-02-17 2016-10-28 Tresse Metallique J Forissier Dispositif de conduction thermique et son procede de fabrication
DE102014109173B4 (de) * 2014-07-01 2023-06-07 Te Connectivity Germany Gmbh Elektrische Kontakteinrichtung und elektrische Schweißverbindung sowie Verfahren zum Herstellen einer Kontakteinrichtung und zum Einrichten einer Schweißverbindung
ITMI20140260U1 (it) * 2014-08-11 2016-02-11 Sat Surface Aluminium Tech S R L Dispositivo di connessione elettrica in un processo di ossidazione anodica
JP6270089B2 (ja) * 2015-05-14 2018-01-31 住友電装株式会社 導電部材
CN105931928B (zh) * 2016-07-06 2018-11-09 上海电科电器科技有限公司 断路器的导电回路
US10497528B2 (en) * 2017-06-01 2019-12-03 Siemens Aktiengesellschaft Multi-finger electrical contact assemblies , circuit breakers, and methods having increased current withstand capabilities
JP7225166B2 (ja) * 2020-07-22 2023-02-20 矢崎総業株式会社 電線の製造方法および電線製造装置

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Publication number Priority date Publication date Assignee Title
EP1495518B2 (de) † 2002-04-12 2010-09-22 ABB S.p.A. Verbindung eines flexiblen leiters mit einer verbindungsklemme und verfahren dafür

Also Published As

Publication number Publication date
JPS60140623A (ja) 1985-07-25
FR2556515A1 (fr) 1985-06-14
US4583065A (en) 1986-04-15
ES296509U (es) 1987-10-16
ES8607635A1 (es) 1986-06-01
AU3657484A (en) 1985-06-20
DE3469118D1 (en) 1988-03-03
CA1234857A (en) 1988-04-05
ZA849618B (en) 1985-07-31
FR2556515B1 (fr) 1987-01-16
ES538262A0 (es) 1986-06-01
ES296509Y (es) 1988-04-16
EP0148051A1 (de) 1985-07-10
AU567469B2 (en) 1987-11-19
ATE32290T1 (de) 1988-02-15

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