WO2007088080A1 - Système de contacts pour un appareil de coupure électrique - Google Patents

Système de contacts pour un appareil de coupure électrique Download PDF

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Publication number
WO2007088080A1
WO2007088080A1 PCT/EP2007/050046 EP2007050046W WO2007088080A1 WO 2007088080 A1 WO2007088080 A1 WO 2007088080A1 EP 2007050046 W EP2007050046 W EP 2007050046W WO 2007088080 A1 WO2007088080 A1 WO 2007088080A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact
arms
coupling member
contact arms
spring elements
Prior art date
Application number
PCT/EP2007/050046
Other languages
German (de)
English (en)
Inventor
Sebastian Aukofer
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2007088080A1 publication Critical patent/WO2007088080A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
    • H01H77/102—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement
    • 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
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • 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
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • H01H1/205—Details concerning the elastic mounting of the rotating bridge in the rotor
    • 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
    • H01H1/20—Bridging contacts
    • H01H2001/2091—Bridging contacts having two pivotally and electrically connected halve bridges

Definitions

  • the invention relates to a contact system for an electrical switching device.
  • An object of the present invention is to find a solution with which a secure opening of a contact system with at least two contacts is achieved.
  • Switching device provided with a arranged on a first contact arm first contact and a arranged on a second contact arm second contact, wherein the two contact arms, if there is no short circuit, are arranged in a contact position in which the two contacts to form a closed Serve current paths, wherein the at ⁇ the contact arms via one or more spring elements miteinan ⁇ connected and to interrupt the current path in a Short circuit case are movably arranged on a coupling member which is connected to one or more switching shafts.
  • a key idea of the invention is to assign each contact a separate contact arm in a Doppelunterbre ⁇ cher contact system.
  • This allows a particularly advantageous Anord ⁇ voltage of the contact arms to each other, which is according to the invention realized in that the two contact arms spring elements are connected to each other and also disposed movably addition to a coupling member.
  • the contact arms on the coupling member in such a way that movement of the contact arms in the event of a short circuit from the contact position to an open position displaces the points of application of the spring elements and thus a reduction of the torque acting on the switching shafts Episode has.
  • the constructive elements of the contact system EIe- are preferably configured and arranged to ⁇ each other that the resulting when opening and the opening movement oppositely directed torque increases more and more from ⁇ the further progresses, the opening operation.
  • Accidental closing of the switch is made considerably more difficult.
  • this forms the prerequisite for a si ⁇ cheres triggering of the switching mechanism.
  • the spring elements are attached directly to the contact arms. It is particularly advantageous is, is when the spring ⁇ elements directly integrated into the contact arms. This has the advantage that no additional components needed who ⁇ .
  • the space required for the contact system according to the invention is thereby very small. There is thus more space available for other modules of the switching device. At the same time can be reduced compared to other solutions, the cost of materials, manufacturing and assembly costs, so that this IMP EXP ⁇ including a cost effective solution is provided.
  • FIG. 2 shows the contact system from FIG. 1 in an opening position when the switching mechanism is not triggered
  • FIG. 3 shows the contact system of Figure 1 in an opening posi tion with ⁇ triggered switch lock
  • FIG. 4 shows a coupling member, as used in a contact system according to FIG. 1.
  • An electrical switching device comprises a contact system 1 with a first movable contact 3 arranged on a first contact arm 2 and with a second movable contact 5 arranged on a second contact arm 4, cf. 1, the two contact arms 2, 4 extend substantially along a common longitudinal axis 6.
  • the contact arms 2, 4 are arranged such that the two movable contact elements 2, 4 are arranged in such a way Contacts 3, 5 to form a closed current path nen ⁇ .
  • they bear against corresponding fixed contacts 7, 8, which are fastened to contact carriers 9, 10 provided for this purpose.
  • Each contact arm 2, 4 has substantially the shape of a wedge, which tapers from its base end 12 in Rich ⁇ tion head end 13.
  • the foot 12 is formed gabelför ⁇ mig
  • the fork shape by two stop elements 14, 15 is formed.
  • Fork is the Mixarmoberseite 16 and the other stop ⁇ element 15 of the fork of Mixarmunterseite 17 assigned.
  • Each stop element 14, 15 has an inwardly directed abutment surface 18, 19.
  • the abutment surfaces 18, 19 of a fork point towards each other and are arranged at an acute angle to each other. They form a nut-shaped receptacle 21 between them.
  • the two contact arms 2, 4 In the contact position, the two contact arms 2, 4 occupy a position in which in the region of the facing away from each other head ends 13 of the contact arms 2, 4 arranged on the Kunststoffarmoberseite 16 movable contacts 3, 5 are parallel to each other.
  • the contact arms 2, 4 along its longitudinal axis 6 are arranged rotated by 180 ° from each other, so that the two movable contacts 3, 5 in
  • Data Data Exchange ⁇ set directions.
  • the two contact arms 2, 4 are connected to one another via two spring elements 22 in the form of prestressed helical tension springs.
  • a spring element 22 is provided on each side of the contact arm arrangement.
  • the spring elements 22 are in each case between those on ⁇ strike elements 14 of the two contact arms 2, 4 attached, which are assigned to the Maisarmoberconsult 16.
  • a single Fe ⁇ derelement can be used in the form of a double spring.
  • the two contact arms 2, 4 are supported with their mutually directed and fork-shaped foot ends 12 on a coupling member 23, as shown in FIG 4 in a perspective view.
  • the stop elements 14 assigned to the respective contact arm tops 16 are connected to one another via the spring elements 22 such that the movable contacts 3, 5 attached to the contact arms 2, 4 are pressed onto the fixed contacts 7, 8.
  • the spring elements 22, on the one hand provide the necessary contact pressure and, on the other hand, bind the contact arms 2, 4 into the coupling element 23.
  • the coupling member 23 which is made as well as the contact arms 2, 4 at ⁇ example of copper, consists essentially of two identical, plate-shaped side parts 24, 25 of an electrically conductive material, which are interconnected via two cylindrical guide sleeves 26.
  • the guide sleeves 26 are two mutually parallel switching shafts 27, 28, which are movable according to a rotation of the coupling member 23 about a rotation axis 29.
  • This resulting axis of rotation 29 of the coupling member 23 extends at a central point of the coupling member 23 parallel to and between ⁇ rule the guide sleeves 26.
  • the coupling member 23 is coupled to two switching shafts 27, 28, the contact system after the triggering of the switching mechanism by a rotary movement finally open.
  • the inner sides of the guide sleeves 26 are made of an electrically insulating material, so that the metallic switching shafts 27, 28 are insulated from the individual current paths.
  • the rest of the guide sleeves 26 is electrically conductive, since they serve as part of the circuit to guide the current through the switching device in the closed state.
  • the coupling member 23 may also have the shape of a solid block of material on ⁇ run in the two isolated holes.
  • the groove-shaped receptacles 21 bear against the foot ends 12 of the contact arms 2, 4 against the guide sleeves 26 of the coupling member 23.
  • the spring-loaded Teten stop members 14 associated stop surfaces 18 of correspondingly formed counter-stops 31 on the side parts 24, 25 of the coupling member 23 and are supported on it.
  • the axes of the switching shafts 27, 28 in a plane 32 (coupling member plane), which is parallel to the - themaschinearmoberon 16 corresponding - levels 33 (contact planes) is arranged, in each of which the movable contacts 3, 5 are arranged ,
  • the first counterstops 31 extend at an acute angle to the coupling element plane 32.
  • Coupling member 23 mounted spring elements 22 and on the other hand by not further described spring elements in the switch lock (not shown) is applied.
  • the embodiments according to the invention with two pelglied 23 supporting contact arms 2 on a Kop ⁇ , 4 also has the result that a movement of the individual contact arms 2, 4 inde pendently ⁇ is possible, as is desirable under certain conditions.
  • the movement may ⁇ réellesbe- in a short-circuit for the contact arms 2, 4 fail un ⁇ differently.
  • the current flowing through the contact carriers 9, 10 of the fixed contacts 7, 8 increases.
  • the coupling member 23 has in each case two stop pairs 31, 35 and 31 ', 35', cf. 4, which are each associated with one of the contact arms 2, 4.
  • both first counterstops 31, 31 'and the second counterstops 35, 35' in each case run parallel to one another.
  • the second counter-stops 35 are arranged obliquely to the first counter-stops 31 derge ⁇ stalt that the second counter-stops 35 the longitudinal edges of the Side parts 24, 25 correspond to one another while the first counterstops 31 are formed by triangular lugs which are attached to the longitudinal edges of the side parts 24, 24 and point obliquely away from the coupling element plane 32.
  • the control shafts move 27, 28 solutions in comparison to the processes known from the prior art solu- than usual also in rotational direction on, resulting in an additional tensioning of the spring elements 22.
  • the torque on the switching shafts 27, 28 according to the invention always klei ⁇ ner.
  • the bearing of the contact arms 2, 4 is carried out on the coupling member 23 such that in the Aufsprin ⁇ conditions of the contacts 3, 5, 7, 8 by the magnetic field Distances between the points of attack of the spring elements 22 on the contact arms 2, 4 on the one hand and the switching shafts 27, 28 on the other hand are getting smaller.
  • the switch fast ⁇ can open ler.
  • the switch lock triggers through the magnetic release and the switching shafts 27, 28 are moved.
  • the coupling member 23 rotates about its central axis of rotation 29 in the direction of rotation ⁇ 36, which corresponds to the direction of rotation 34 of the contact arms during opening.
  • the spring elements 22 relax and the contact arms 2, 4 are again with their first stop surfaces 18 against the first counter-stops 31 of the coupling member 23, see.
  • This means that the coupling element plane 32 is again parallel to the contact planes 33.
  • the second counterstops 35 are again parallel to the contact planes 33.
  • the switch is now open (tripped) and the opening process is safely completed without the risk of springing back into the contact position. Falling of the switch, for example, with a decrease in the short-circuit current is thus reliably prevented.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)

Abstract

L'objectif de cette invention est de permettre une ouverture en toute sécurité d'un système de contacts (1) constitué d'au moins deux contacts (3, 5). A cet effet, un système de contacts (1) pour un appareil de coupure électrique est constitué d'un premier contact (3), placé sur un premier bras de contact (2), et d'un second contact (5) placé sur un second bras de contact (4), les deux bras de contact (2, 4) étant placés, tant qu'aucun court-circuit ne se produit, dans une position de contact, dans laquelle les deux contacts (3, 5) servent à former un trajet de courant fermé, ces deux bras de contact (2, 4) étant reliés par le biais d'un ou de plusieurs éléments à ressort (22) et placés de façon mobile sur un élément de couplage (23), relié à un ou plusieurs arbres de commande (27, 28), afin de pouvoir couper le trajet du courant en cas de court-circuit.
PCT/EP2007/050046 2006-01-31 2007-01-03 Système de contacts pour un appareil de coupure électrique WO2007088080A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610004401 DE102006004401B3 (de) 2006-01-31 2006-01-31 Kontaktsystem für ein elektrisches Schaltgerät
DE102006004401.0 2006-01-31

Publications (1)

Publication Number Publication Date
WO2007088080A1 true WO2007088080A1 (fr) 2007-08-09

Family

ID=37853004

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/050046 WO2007088080A1 (fr) 2006-01-31 2007-01-03 Système de contacts pour un appareil de coupure électrique

Country Status (2)

Country Link
DE (1) DE102006004401B3 (fr)
WO (1) WO2007088080A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015215945A (ja) * 2014-05-07 2015-12-03 河村電器産業株式会社 回路遮断器又は開閉器における接点構造

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105723485B (zh) * 2013-12-05 2018-09-18 施耐德电气美国股份有限公司 具有独立叶片的双闭双断式断续器模块
EP3724909A1 (fr) * 2017-12-15 2020-10-21 Jozef Smrkolj Disjoncteur de protection de puissance intelligent

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB785874A (en) * 1955-07-19 1957-11-06 Paul Jules Troussier Improvements in and relating to electrical switches
EP0314540A1 (fr) * 1987-10-26 1989-05-03 Merlin Gerin Dispositif de coupure pour un disjoncteur multipolaire à contact rotatif double
EP0399282A2 (fr) * 1989-05-25 1990-11-28 BTICINO S.r.l. Disjoncteur magnéto-thermique automatique ayant une capacité de coupure haute
EP0540431A1 (fr) * 1991-10-29 1993-05-05 Schneider Electric Sa Mécanisme de manoeuvre pour disjoncteur tétrapolaire
US6259048B1 (en) * 1998-05-29 2001-07-10 General Electric Company Rotary contact assembly for high ampere-rated circuit breakers
DE10056821A1 (de) * 2000-11-16 2002-05-23 Moeller Gmbh Kontaktanordnung für strombegrenzende Schutzschalter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB785874A (en) * 1955-07-19 1957-11-06 Paul Jules Troussier Improvements in and relating to electrical switches
EP0314540A1 (fr) * 1987-10-26 1989-05-03 Merlin Gerin Dispositif de coupure pour un disjoncteur multipolaire à contact rotatif double
EP0399282A2 (fr) * 1989-05-25 1990-11-28 BTICINO S.r.l. Disjoncteur magnéto-thermique automatique ayant une capacité de coupure haute
EP0540431A1 (fr) * 1991-10-29 1993-05-05 Schneider Electric Sa Mécanisme de manoeuvre pour disjoncteur tétrapolaire
US6259048B1 (en) * 1998-05-29 2001-07-10 General Electric Company Rotary contact assembly for high ampere-rated circuit breakers
DE10056821A1 (de) * 2000-11-16 2002-05-23 Moeller Gmbh Kontaktanordnung für strombegrenzende Schutzschalter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015215945A (ja) * 2014-05-07 2015-12-03 河村電器産業株式会社 回路遮断器又は開閉器における接点構造

Also Published As

Publication number Publication date
DE102006004401B3 (de) 2007-04-05

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