EP0920703B1 - Systeme de contact mobile pour disjoncteur basse tension avec un palier pivotant - Google Patents

Systeme de contact mobile pour disjoncteur basse tension avec un palier pivotant Download PDF

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Publication number
EP0920703B1
EP0920703B1 EP97941834A EP97941834A EP0920703B1 EP 0920703 B1 EP0920703 B1 EP 0920703B1 EP 97941834 A EP97941834 A EP 97941834A EP 97941834 A EP97941834 A EP 97941834A EP 0920703 B1 EP0920703 B1 EP 0920703B1
Authority
EP
European Patent Office
Prior art keywords
bearing
contact
circuit breaker
journal
contact arrangement
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
EP97941834A
Other languages
German (de)
English (en)
Other versions
EP0920703A1 (fr
Inventor
Sezai TÜRKMEN
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0920703A1 publication Critical patent/EP0920703A1/fr
Application granted granted Critical
Publication of EP0920703B1 publication Critical patent/EP0920703B1/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
    • H01H1/12—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
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts

Definitions

  • the invention relates to a movable contact arrangement for a low voltage circuit breaker with contact levers and a contact lever carrier receiving the contact lever and with a fixed conductor piece, which with the contact levers is connected by flexible conductors, the contact lever carrier around a in the area of the stationary conductor piece arranged pivot bearing is movable, the one to the Contact lever carrier molded bearing pins and a stationary, in a housing body of the low-voltage circuit breaker arranged bearing opening includes.
  • FIG. 5 shows In addition, a view of one equipped with contact levers 1 Contact lever carrier 2 of one of the aforementioned DE 44 16 105 C1 corresponding circuit breaker. After that both are lateral cheeks 3 of the contact lever carrier 2 with one after externally protruding bearing pin 4, which in a bearing opening 5 of a broken off indicated housing body 6 of Circuit breaker intervenes.
  • This arrangement requires Multi-pole version of the circuit breaker one corresponding space requirements in width.
  • the canceled indicated partition walls 7 between the neighboring poles must therefore be one of the axial depth of both bearing openings plus a sufficient space between them Have thickness.
  • the described design of the swivel bearing therefore affects the width of the circuit breaker.
  • pivot bearings for movable contact arrangements known without or with very little lateral Overhang over the fixed ladder section.
  • Swivel bearing is e.g. B. in US 4,490,593 A. described.
  • each contact lever with a journal. Together with coil springs, this also forms a sliding element a means of power transmission.
  • the making of a such a current-transmitting pivot bearing requires one relatively large effort for editing the stationary ladder section.
  • power transmitting Joint arrangements with regard to their fluctuating electrical contact resistance not for all areas of application suitable for low-voltage circuit breakers.
  • the invention has for its object, starting from a Contact arrangement of the type mentioned a robust To create swivel bearings for the contact lever bracket no increase in the width of the contact arrangement over the Dimension required for reasons of electrical dimensioning beyond required.
  • this object is achieved in that the Contact lever carrier only an approximately centrally arranged bearing pin with a the width of the movable contact arrangement not exceeding length and that at least one Bearing opening also within the width of the Movable contact arrangement is arranged, the Bearing opening through interacting recesses or surfaces of two separable assemblies of the low-voltage circuit breaker is formed.
  • the invention ensures that no lateral
  • the pivot bearing protrudes beyond the fixed ladder section is taken into account and therefore the partitions between neighboring poles only one for electrical reasons Insulation need to have the required thickness.
  • Insulation need to have the required thickness.
  • the Dimensions of the circuit breaker are thereby in advantageously reduced.
  • this advantage goes not at the expense of the mechanical reliability of the Swivel bearing. Rather, there is now a considerably larger one Spacing available for the journal, which is favorable on the life and reliability of the Circuit breaker affects.
  • the bearing opening is through interacting recesses or surfaces of two separable Assemblies of the low-voltage circuit breaker be educated.
  • the complete warehouse openings arise this way only when assembling the housing body what the Assembly of the contact lever carrier facilitated.
  • the swivel angle of the contact lever carrier when entering and Opening the circuit breaker is proportionate low. Therefore it is possible in itself, the whole End area of the contact lever carrier as a journal to train.
  • Main arm of the contact lever carrier in Be tapered in the direction of the bearing pin the bearing journal is divided into two lateral journal areas and that each pin area is assigned a bearing opening is. In this way, the largest possible span achieved and thus with relatively little effort Tolerance-free storage enables.
  • Deviating from the usual pairing of a cylindrical one Bearing journal with a cylindrical bearing opening can be used for the purposes of the invention be more favorable when the bearing opening or the bearing openings have a polygonal cross-sectional shape has or have. For example, a square, hexagonal or octagonal cross-sectional shape. These shapes are part of the manufacturing of housing bodies plastic processes under certain circumstances cheaper to produce than cylindrical bearing openings and also allow the storage of a supply Lubricant that is intended for the entire life of the Circuit breaker is sufficient.
  • FIG. 1 shows a movable contact arrangement in a partially sectioned side view.
  • FIG. 2 shows the contact arrangement according to FIG. 1 with View of the contacting side of contact levers.
  • FIGS 3 and 4 show details of bearing openings.
  • FIG. 5 shows a movable contact arrangement, as in a circuit breaker according to DE 44 16 105 is used, in a corresponding to Figure 2 Presentation.
  • the movable shown in Figure 1 in a side view Contact arrangement 10 belongs to one that is only indicated as an outline Low voltage circuit breakers 11.
  • the contact arrangement 11 comprises a contact lever carrier 12, the formed in one piece or in several parts and the whole or can be partially made of insulating plastic.
  • Contact force springs 15 tension the Contact lever 13 in the direction of a fixed switching contact before that in Figure 1 to simplify the illustration is omitted.
  • DE 44 16 105 C1 referenced in the full current path a low voltage circuit breaker including one associated arc extinguishing chamber shown and described is.
  • the contact levers 13 are by means of a flexible conductor rope 16 or more such conductor cables with a fixed one Conductor piece 17 connected, in particular as the lower Connection rail can be formed from a housing the circuit breaker 11 protrudes. Together with a the contact levers 13 opposite top connecting rail (see also DE 44 16 105 C1) the contact lever 13, the conductor cables 16 and the lower one Fixed conductor piece 17, the current path of a pole Circuit breaker 11.
  • the contact lever carrier 12 leads pivoting movement indicated by a double arrow 20, the drive device 21 indicated schematically is initiated.
  • the drive device 21 with the Contact lever carrier 12 on its opposite the contact levers 13 Back through an articulated coupling linkage 22 connected.
  • a pivot bearing designated 23 in total for the contact lever carrier 12 is close to that stationary conductor piece 17 and includes one at the lower end a main arm 24 of the contact lever carrier 12 arranged cylindrical bearing pin 25 and at least one bearing opening 26.
  • the bearing journal can be used for the entire Occupy the available width of the contact arrangement 10, which is essentially the width of the fixed conductor section 17 corresponds.
  • the Main arm 24 of the contact lever carrier 12 in the direction of the Bearing pin 25 according to the broken line be tapered. This will make two side Pin regions 29 and 30 formed, each of which has its own Bearing opening 31 or 32 is assigned.
  • bearing openings differ in the structure of the circuit breaker 11 be involved.
  • the bearing opening 26 is practically completely in one Housing body 27 housed and is through a recess 28 of rectangular cross-sectional shape in connection with the Head piece 17 formed.
  • the depth of the recess 28 corresponds at least to the diameter of the journal 24.
  • the conductor piece 17 only covers the recess 28 locally and only to the extent that the bearing journal 25 is leaving the bearing opening 26 is prevented.
  • bearing opening 26 shown in FIG. 1 is approximately has a square cross-sectional shape, others can polygonal cross-sectional shapes may be advantageous.
  • FIG. 3 shows a bearing opening 33 with a hexagonal Cross-sectional shape by symmetrical recesses in two joined housing bodies 34 and 35 is formed.
  • a bearing opening 36 with an octagonal shape is appropriate usable according to Figure 4.

Landscapes

  • Breakers (AREA)
  • Contacts (AREA)

Claims (4)

  1. Ensemble (10) de contact mobile pour un disjoncteur (11) basse tension, comportant des leviers (13) de contact et un support (12) de leviers de contact recevant les leviers (13) de contact, ainsi qu'un élément (17) conducteur fixe, qui est relié aux leviers (13) de contact par des conducteurs (16) souples, le support (12) de leviers de contact pouvant être déplacé autour d'un palier (23) de pivotement, qui est disposé dans la région de l'élément (17) conducteur fixe et qui comprend un pivot (25) formé sur le support (12) de leviers de contact et une ouverture (26, 33, 34) fixe de palier, disposée dans un corps (27, 34, 35) de boítier du disjoncteur (11) basse tension,
    caractérisé en ce que le support (12) de leviers de contact comprend seulement un pivot (25) disposé environ au milieu, d'une longueur ne dépassant pas la largeur de l'ensemble (10) de contact mobile, et en ce qu'au moins une ouverture (26, 33, 34) de palier est également ménagée sans dépasser la largeur de l'ensemble (10) de contact mobile, l'ouverture (26, 33, 34) de palier étant formée par des évidements ou faces coopérants de deux sous-groupes séparables du disjoncteur (11) basse tension.
  2. Ensemble de contact mobile suivant la revendication 1, caractérisé en ce qu'un des sous-groupes est formé par le corps (27) de boítier, et l'autre sous-groupe par l'élément (17) conducteur fixe, qui recouvre au moins localement l'évidement (26).
  3. Ensemble de contact mobile suivant la revendication 1, caractérisé en ce qu'un bras (24) principal, portant le pivot (25), du support (12) de leviers de contact est rétréci en direction du pivot (25) de telle sorte que le pivot (25) est subdivisé en deux régions (29, 30) latérales de pivot et qu'une ouverture (31, 32, 33, 34) de palier est associée à chaque région (29, 30) de pivot.
  4. Ensemble de contact mobile suivant la revendication 1, caractérisé en ce que la ou les ouvertures (26, 33, 34) de palier ont une forme de section polygonale.
EP97941834A 1996-08-21 1997-08-21 Systeme de contact mobile pour disjoncteur basse tension avec un palier pivotant Expired - Lifetime EP0920703B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19635366 1996-08-21
DE19635366A DE19635366A1 (de) 1996-08-21 1996-08-21 Bewegbare Kontaktanordnung für einen Niederspannungs-Leistungsschalter mit einem Schwenklager
PCT/DE1997/001868 WO1998008240A1 (fr) 1996-08-21 1997-08-21 Systeme de contact mobile pour disjoncteur basse tension avec un palier pivotant

Publications (2)

Publication Number Publication Date
EP0920703A1 EP0920703A1 (fr) 1999-06-09
EP0920703B1 true EP0920703B1 (fr) 2000-02-16

Family

ID=7804275

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97941834A Expired - Lifetime EP0920703B1 (fr) 1996-08-21 1997-08-21 Systeme de contact mobile pour disjoncteur basse tension avec un palier pivotant

Country Status (5)

Country Link
US (1) US6188031B1 (fr)
EP (1) EP0920703B1 (fr)
JP (1) JP2001503557A (fr)
DE (2) DE19635366A1 (fr)
WO (1) WO1998008240A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19727696B4 (de) * 1997-06-20 2007-09-13 Siemens Ag Bewegbarer Schaltkontakt für Niederspannungs-Leistungsschalter
DE19932010C1 (de) * 1999-07-02 2001-03-08 Siemens Ag Schaltkontaktanordnung eines Niederspannungs-Leistungschalters mit Hauptkontakten, Zwischenkontakten und Abreißkontakten
DE10243835B3 (de) * 2002-09-13 2004-04-15 Siemens Ag Schaltkontaktanordnung mit einer Abbrandanzeige für die Schaltkontakte
US7351927B1 (en) * 2006-10-13 2008-04-01 Eaton Corporation Electrical switch, conductor assembly, and independent flexible conductive elements therefor
US8008587B2 (en) * 2009-04-08 2011-08-30 Eaton Corporation Circuit breaker carrier assembly with spring guide

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE710116A (fr) * 1967-01-30 1968-05-30
US4490593A (en) 1983-05-09 1984-12-25 Square D Company Arrangement for arc transfer in high amperage molded case circuit breaker
DE3802183A1 (de) 1988-01-26 1989-08-03 Licentia Gmbh Niederspannungs-leistungsschalter mit auswechselbaren kontakten
US4926019A (en) * 1988-09-08 1990-05-15 Siemens Energy & Automation, Inc. Moving copper pivot
JP2864727B2 (ja) * 1990-11-22 1999-03-08 富士電機株式会社 反発形回路遮断器の接触子装置
FR2688625B1 (fr) * 1992-03-13 1997-05-09 Merlin Gerin Contact d'un disjoncteur a boitier moule
DE4416105C1 (de) * 1994-04-19 1995-05-24 Siemens Ag Niederspannungs-Leistungsschalter mit einer Schaltkammer
DE29503327U1 (de) * 1995-02-16 1995-04-13 Siemens AG, 80333 München Kontakthebelbaugruppe für einen Niederspannungs-Leistungsschalter
DE19643607A1 (de) * 1996-05-13 1997-11-20 Siemens Ag Leistungsschalter für Niederspannung mit Anschlußschienen

Also Published As

Publication number Publication date
DE59701142D1 (de) 2000-03-23
DE19635366A1 (de) 1998-02-26
WO1998008240A1 (fr) 1998-02-26
US6188031B1 (en) 2001-02-13
JP2001503557A (ja) 2001-03-13
EP0920703A1 (fr) 1999-06-09

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