EP0897183B1 - Dispositif de commutation pour courant fort - Google Patents

Dispositif de commutation pour courant fort Download PDF

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Publication number
EP0897183B1
EP0897183B1 EP98114614A EP98114614A EP0897183B1 EP 0897183 B1 EP0897183 B1 EP 0897183B1 EP 98114614 A EP98114614 A EP 98114614A EP 98114614 A EP98114614 A EP 98114614A EP 0897183 B1 EP0897183 B1 EP 0897183B1
Authority
EP
European Patent Office
Prior art keywords
housing
contact
expansion joint
switching
switching device
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
EP98114614A
Other languages
German (de)
English (en)
Other versions
EP0897183A3 (fr
EP0897183A2 (fr
Inventor
Stefan Huwer
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.)
Ems Elektro Metall Schwanenmuehle GmbH
Original Assignee
EMS ELEKTRO METALL SCHWANENMUEHLE GmbH
EMS ELEKTRO METALL SCHWANENMUE
Ems Elektro Metall Schwanenmuehle GmbH
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 EMS ELEKTRO METALL SCHWANENMUEHLE GmbH, EMS ELEKTRO METALL SCHWANENMUE, Ems Elektro Metall Schwanenmuehle GmbH filed Critical EMS ELEKTRO METALL SCHWANENMUEHLE GmbH
Publication of EP0897183A2 publication Critical patent/EP0897183A2/fr
Publication of EP0897183A3 publication Critical patent/EP0897183A3/fr
Application granted granted Critical
Publication of EP0897183B1 publication Critical patent/EP0897183B1/fr
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
    • 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
    • H01H2001/5827—Laminated connections, i.e. the flexible conductor is composed of a plurality of thin flexible conducting layers

Definitions

  • the invention relates to a high-current switching device, which two contact plates to be connected to separate current conductors, at least one movably mounted on one of the contact plates Shift finger and on the shift fingers and the other contact plate arranged contacts, each shift finger via a Expansion band electrically connected to one contact plate is.
  • the switching fingers of high-current switching devices are used for disconnection and closing the circuit, covering a switching path have, for power transmission, as a base for switch contacts, for switching over time via pre-contacts, for deleting Arcs arising during the switching process, for heat emission and for Recording of the mechanical resulting from the switching dynamics Stresses. Accordingly, the shift fingers of High current switching devices have high electrical and mechanical Resilience, small size and good electrical conductivity exhibit. In addition, the shift finger is inexpensive have to be manufactured.
  • Shift fingers are sufficient, have high-current switching devices in the generally several shift fingers. You can use one or Several of the switching fingers pre-contacts can be provided if this is for the respective switching operation is appropriate. In addition, at one or more of the shift fingers as well as on the counter contact plate Horns for deriving the arc that arises during the switching process to be appropriate.
  • the provided on the shift fingers and the counter contact plate Contact pieces can consist of special alloys. Their surface is mostly tinned or silver-plated.
  • the contact fingers themselves usually consist of copper, especially (S) E-Cu F25-30, whereby whose surface is silver-plated or tinned when the stretch bands or conductor are screwed on while the surface is bare is when the parts are connected by welding or soldering.
  • the known shift fingers contain bores and have incisions or peaks to absorb mechanical forces from actuators or feathers. At the force application points or Places with high bending moments result in loads that increase Deformations of the shift fingers result when the mechanical strength of the material of the shift finger, namely the Copper, is reduced. Therefore, one must in the manufacture of the known shift finger make sure that only locally limited little heat is introduced into the material, namely copper, why expensive manufacturing processes such as percussion welding or Electron beam welding must be applied.
  • the contacts or stretch bands can also be screwed on what high assembly costs and also high contact resistance Has. In the latter case, however, defective parts can also be removed replace more easily.
  • US 1,560,308 discloses a power switch with one serving as a sleeve Housing, inside of which a stretch band extends. At the Closing the switch will turn the housing against a mating contact pressed so that the housing both the mechanical loads of the Switching takes up, as well as the power line through the wall of the Serves through the contact closure, This is the result Problem that the case is both good mechanical, as well as good must have electrical properties, which compromises in the Material selection.
  • the invention is based on the object in high-current switching devices the shift fingers simple and therefore inexpensive to be able to produce that this one hand a good electrical Conductivity and on the other hand also a high mechanical Have resilience.
  • the invention ensures that the power transmission provided current conductor, which in particular made of copper exist, practically not also for the inclusion of the mechanical Loads resulting from the switching operations and switching movements result, must be used. Accordingly, they can Elongation band forming, made of copper lamellae or strands connected at their ends by inexpensive welds become. The mechanical stresses on the power line unnecessary housing made of non-magnetizable stainless steel or VA steel.
  • the contacts to be provided on the shift fingers can, for example to be brazed because of the power line provided stretch bands practically no mechanical loads have to pick up and accordingly at the welding and soldering points can be mechanically weakened without the functionality of the Affect shift finger.
  • the housing of the individual shift fingers is preferably in two parts trained and contains holes, has incisions or peaks for absorbing mechanical forces from actuators and Springs up.
  • the shift finger provided springs are preferably punched out of sheet metal.
  • the stretch bands consist of a number of lamellas or strands joined together at their ends by pressure welding are connected.
  • the stretch bands can be narrow, single Fingers, or as a stretch band slit through one end be trained. At the free ends of this stretch band or these expansion bands are expediently brazed contact pieces appropriate.
  • the one at the force application points or places with high bending moments occurring high loads are according to the invention by the Comparison to copper high strength steel sheet such as VA material added.
  • the stretch bands made of copper strands or lamellae can accordingly at their ends by pressure welding or brazing be connected because of the associated heat influence resulting reduced strength of the stretch bands none causes significant disadvantages because of the mechanical strength is ensured by the housing provided according to the invention.
  • the laminated area of the Stretch band extended by approximately the length of the shift finger, what a significant increase in the life of the stretch band and so that the switch as a whole.
  • the switching device has two electrically conductive contact plates 1 and 2 for externally connecting the switching device to one here not shown current-transmitting electrical conductor, which means the switching device is to be interrupted or closed.
  • Switch fingers 3 are connected to the contact plate 1, which form the actual switching element. Each shift finger 3 is around one Swivel 4 pivoted to make the necessary switching movements to be able to execute.
  • An actuating element 5 for example a cylinder or engine, provides the necessary via a linkage 6 or an eccentric Switching movements of the shift finger 3.
  • All shift fingers are operated with the same mechanism. However, there is a pre-contact function for at least one switching finger due to a changed geometry on shift fingers or Actuation mechanism possible.
  • Each shift finger 3 consists of a housing 7 and an expansion band 8.
  • the stretch band 8 consists of a plurality of one Package assembled lamellae 9 made of copper, which at their ends 10th and 11 are joined together by pressure welding while the slats 9 between the two ends 10 and 11 otherwise free can move against each other to the function of the stretch band to be able to fulfill.
  • stretch band 8 or its slats 9 for the transmission serve the electrical current, that is part of the stretch band 8 enclosing housing 7 made of non-magnetizable sheet steel, preferably VA steel sheet, manufactured and takes over the switching operations resulting mechanical loads.
  • the stretch band 8 therefore does not need for the transfer of mechanical Switching forces to be designed. So you can end 10 and 11 by simple and inexpensive heat treatment, for example by Pressure welding, combine into a compact package.
  • the solder layer 14 consists, for example, of silver solder L-AG 44 or L-AG 15 P.
  • a horn 15 is attached, the one the same horn 16 attached to the second contact plate 2 is opposite.
  • the horns 15 and 16 are used to derive the Switching arc.
  • the contact piece 13 of the switching finger 3 is an identical contact piece 17 opposite, which is attached to the second contact plate 2 and also consists of a special alloy.
  • a compression spring 18 presses the shift finger 3 towards the second Contact plate 2 so that the contact pieces 13 and 17 are firmly on top of each other when the contact should be closed.
  • the housing 7 consists of two bowl-shaped parts 19 and 20, such as 2 and 4 in particular. These bowl-shaped housing parts 19 and 20 are each formed from a stamped sheet metal blank and are welded to one another at their longitudinal edges 21, so that the housing 7 a the mechanical switching loads absorbing unit.
  • Fig. 3 shows that three shift fingers 3 formed from an expansion band 8 are, which is longitudinally slotted through two incisions 22 to the to form three shift fingers.
  • the rear end 10 of the three shift fingers or the stretch band is common to all three shift fingers, while the front ends 11 with the brazed to it Contacts 13 are separated from each other to the shift finger individually to be able to adjust.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Control Of Transmission Device (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Manufacture Of Switches (AREA)

Claims (7)

  1. Dispositif de commutation pour courant fort comprenant une paire de plaques de contact (1; 2) à connecter à des conducteurs de courant, et comprenant également au moins un doigt de commutation (3) mobile sur l'une des plaques de contact (1), et comprenant également des contacts (13; 17) prévus sur le doigt de contact et la deuxième plaque de contact (2), et dans lequel ledit doigt de contact est connecté par l'intermédiaire d'un joint de dilatation (8) électroconducteur à la première plaque de contact (1) et ledit doigt de contact (3) comprend un boítier (7) recevant les contraintes mécaniques générées par l'opération de commutation, et dans lequel ledit joint de dilatation (8) s'étend dans ce boítier,
    caractérisé en ce que
    ledit joint de dilatation (8) s'étend dans ledit boítier (7) au moins jusqu'au contact (13) prévu sur ledit doigt de commutation et est connecté à ce seul contact (13) de manière électroconductrice, et en ce que ledit contact (13) fait saillie dudit boítier et est guidé à travers la paroi de ce boítier.
  2. Dispositif de commutation de courant fort suivant la revendication 1,
    caractérisé en ce que
    le joint de dilatation (8) du doigt de commutation (3) consiste de cuivre et que le boítier (7) consiste d'un acier inoxydable antimagnétique.
  3. Dispositif de commutation de courant fort suivant l'une des revendications 1 à 2,
    caractérisé en ce que
    le joint de dilataion (8) est composé de lamelles (9) ou de cordons soudés aux deux extrémités (10; 11) dudit joint de dilatation.
  4. Dispositif de commutation de courant fort suivant l'une des revendications 1 à 3,
    caractérisé en ce que
    le contact (13) du doigt de commutation (3) est brasé à l'une des extrémités (11) du joint de dilatation (8).
  5. Dispositif de commutation de courant fort suivant l'une des revendications 1 à 4,
    caractérisé en ce que
    l'autre extrémité (10) du joint de dilatation (8) est brasée ou soudée à la première plaque de contact (1).
  6. Dispositif de commutation de courant fort suivant l'une des revendications 1 à 5,
    caractérisé en ce que
    le boítier (7) est composé de deux section d'une plaque d'acier (19, 20) liées de manière permanente l'une par rapport à l'autre.
  7. Dispositif de commutation de courant fort suivant l'une des revendications 1 à 6,
    caractérisé en ce que
    le boítier (7) enferme la partie avant ou libre du joint de dilatation (8) et en ce que l'extrémité arrière du joint de dilatation s'étend au-delà du boítier.
EP98114614A 1997-08-13 1998-08-04 Dispositif de commutation pour courant fort Expired - Lifetime EP0897183B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19734968 1997-08-13
DE19734968A DE19734968A1 (de) 1997-08-13 1997-08-13 Hochstrom-Schaltvorrichtung

Publications (3)

Publication Number Publication Date
EP0897183A2 EP0897183A2 (fr) 1999-02-17
EP0897183A3 EP0897183A3 (fr) 1999-09-01
EP0897183B1 true EP0897183B1 (fr) 2003-04-23

Family

ID=7838779

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98114614A Expired - Lifetime EP0897183B1 (fr) 1997-08-13 1998-08-04 Dispositif de commutation pour courant fort

Country Status (2)

Country Link
EP (1) EP0897183B1 (fr)
DE (2) DE19734968A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007048748A1 (de) * 2007-10-08 2009-04-09 Siemens Ag Kontakthebel
DE102022004752A1 (de) 2022-12-16 2023-03-02 Mercedes-Benz Group AG Bauteilanordnung zur elektrischen Kontaktierung und Verfahren zur Herstellung der Bauteilanordnung
EP4424453A1 (fr) * 2023-03-02 2024-09-04 Mercedes-Benz Group AG Ensemble composite comprenant au moins une bande d'étirement et procédé de fabrication de l'ensemble composite

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19932996C2 (de) * 1999-07-09 2002-07-18 Mitsubishi Electric Corp Leiter mit Flexiblem Teil
SG87815A1 (en) * 1998-03-26 2002-04-16 Mitsubishi Electric Corp Flexible conductor and switchgear made with thereof
DE102006050767B3 (de) * 2006-10-27 2008-05-29 Moeller Gmbh Stromzuführung für einen beweglichen Kontaktarm
US20100072044A1 (en) 2008-09-23 2010-03-25 General Electric Company Circuit breaker unitary current path
DE102013101080B9 (de) 2013-02-04 2014-12-24 Connex Gmbh Verfahren zur Herstellung eines Strombandes
DE102016204668A1 (de) * 2016-03-22 2017-09-28 Siemens Aktiengesellschaft Phasenleiteranordnung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1560308A (en) * 1923-10-19 1925-11-03 Gen Electric Electrical switch
US1680701A (en) * 1927-04-04 1928-08-14 Gen Electric Contact-connecter shunt
US4144554A (en) * 1976-12-08 1979-03-13 Square D Company Circuit breaker bolt-on flexible connector
DE4416104C2 (de) * 1994-04-19 2000-07-13 Siemens Ag Schaltkontaktanordnung eines elektrischen Leistungsschalters

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007048748A1 (de) * 2007-10-08 2009-04-09 Siemens Ag Kontakthebel
DE102022004752A1 (de) 2022-12-16 2023-03-02 Mercedes-Benz Group AG Bauteilanordnung zur elektrischen Kontaktierung und Verfahren zur Herstellung der Bauteilanordnung
EP4424453A1 (fr) * 2023-03-02 2024-09-04 Mercedes-Benz Group AG Ensemble composite comprenant au moins une bande d'étirement et procédé de fabrication de l'ensemble composite

Also Published As

Publication number Publication date
EP0897183A3 (fr) 1999-09-01
EP0897183A2 (fr) 1999-02-17
DE19734968A1 (de) 1999-02-18
DE59808017D1 (de) 2003-05-28

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