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EP1196936B1 - Bewegbarer kontakt mit niedrigem elektrischen widerstand - Google Patents

Bewegbarer kontakt mit niedrigem elektrischen widerstand Download PDF

Info

Publication number
EP1196936B1
EP1196936B1 EP00953033A EP00953033A EP1196936B1 EP 1196936 B1 EP1196936 B1 EP 1196936B1 EP 00953033 A EP00953033 A EP 00953033A EP 00953033 A EP00953033 A EP 00953033A EP 1196936 B1 EP1196936 B1 EP 1196936B1
Authority
EP
European Patent Office
Prior art keywords
moveable contact
contact
side plates
side plate
movable contact
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
EP00953033A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1196936A1 (de
Inventor
Rolf-Dieter Bauer
Gary Douville
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.)
AEG Niederspannungstechnik GmbH and Co KG
Original Assignee
AEG Niederspannungstechnik GmbH and Co KG
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 AEG Niederspannungstechnik GmbH and Co KG filed Critical AEG Niederspannungstechnik GmbH and Co KG
Publication of EP1196936A1 publication Critical patent/EP1196936A1/de
Application granted granted Critical
Publication of EP1196936B1 publication Critical patent/EP1196936B1/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
    • 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
    • H01H73/045—Bridging contacts
    • 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
    • H01H1/2041—Rotating bridge
    • H01H1/2058—Rotating bridge being assembled in a cassette, which can be placed as a complete unit into a circuit breaker
    • 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
    • H01H77/104—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 with a stable blow-off position

Definitions

  • the invention relates to a movable contact, especially for a circuit breaker, according to the preamble of Claim 1.
  • Circuit breakers come in a variety of designs built to protect circuits against overload. Core of one such a circuit breaker is a movable contact, which in Response to an overload of the circuit to be protected breaks the circuit.
  • the drive for the Interrupting movement of the movable contact can occur different ways according to the form of monitoring Overload or done manually.
  • a movable contact 1 which is rotatable about a central pin 4, relative to a rotor 3 held rotatable.
  • the movable contact 1 In the position shown in Fig. 2 is the movable contact 1 in contact with fixed contacts 2, whereby the circuit to be protected is closed.
  • Tabs 5 shown which can be rotated by means of pins 6 on the movable contact 1 are held.
  • the center pin 4 penetrates contact 1 around it on both sides, i.e. on the front side shown in the drawing and the this side facing away from the rotor 3 or on a Support housing 8.
  • the tabs 5 are symmetrical on the Front and back of the movable contact 1 provided and the pins 6 penetrate the movable contact in the direction perpendicular to the plane of the drawing in FIG one pair of tabs each on the front and back of the to keep movable contact 1.
  • the tabs 5 press radially outward of the rotor 3 displaceable pins 7 against the Spring force of a tension spring connecting the pins 7 to one another 9 radially outwards. If the tabs 5 in the direction of Stand diameter of the rotor 3, the movable contact is 1 in a dead center position in which the spring force of the spring 9 is greatest is. After exceeding or crossing this dead center position the tabs 5 move again under the spring force towards each other until the movable contact in the in Fig. 3rd shown release position, in which the connection of the Fixed contacts 2 is interrupted via the movable contact 1.
  • the serving as the axis of rotation for the rotor 3 or the tabs 5 Pins 4 and 6 inserted into holes in the movable Contact 1 are formed.
  • the cross section of the movable Contact 1 In the area of these holes is the cross section of the movable Contact 1 is not available for current supply; the movable contact has a high electrical resistance. Consequently, the movable contact 1 must be dimensioned that its smallest cross-section, i.e. in the area of the holes, for the current supply is sufficient and further requirements with regard to the heating etc. of the movable contact the current flowing in it is sufficient. This leads to a Oversizing the remaining sections of the movable Contact, which leads to a high consumption of expensive copper. It should be noted that such circuit breakers millions of times are produced so that a reduction in material requirements a significant cost reduction for the manufacturer and a Conservation of natural material and energy resources.
  • EP 0 394 922 A1 shows a flat contact on both sides is taken up by bearing shells with a slot. Thereby there is a rotatable bearing without breaking the movable contact.
  • the bearing shells also serve Inclusion of torsion springs that pre-stress the contact serve in the closed position (contact pressure). Will the Contacts separated when tripped, so the contact turns against Spring force and is in the open position by a Latching device held.
  • WO 92/00598 shows a movable contact that is encompassed by a bearing element, the lateral bearing journal wearing.
  • the movable contact is also stored here without breaking through the cross-section.
  • Torsion spring provided to keep the contact in the closed position biasing.
  • an actuation extension is formed on the bearing element which the trigger mechanism acts on.
  • the invention has for its object a movable Contact according to the preamble of claim 1 to that effect further that the size of the contact, and thus the Size of one using the movable contact Circuit breaker is reduced and manufacturing simplified is.
  • the task comes with a movable contact with the characteristics of claim 1 solved.
  • a movable contact in particular for a circuit breaker, proposed that is concentric with a Rotor is rotatably mounted, two fixed contacts in the closed position connects to each other and by the rotor along a pole track in a release position is movable in which the fixed contacts are separated from each other, the movable contact on two its flanks each with a side plate with a Bearing half for the rotatable mounting of the movable contact is provided.
  • each one half of the bearing for rotating Bearing the contact can be on a hole in the Contact be waived. Because of this there is none Cross-sectional reduction in this area of contact before and the movable contact has a lower electrical Resistance so that the contact for the same current value with smaller cross-section can be designed than that conventional contact with a bore from the center pin is reached. As a result, the contact can be smaller and one have a smaller volume of copper, so that by the inventive design of the copper need for the contact is reduced. Due to the smaller contact, the Size of the circuit breaker can be reduced.
  • the bearing half is from the respective side plate extending projection.
  • the Contact is provided with at least two swivel tabs, which are resiliently connected and slidable and are pivotally mounted on a pole track housing to the movable contact while crossing a dead center position of the Lugs optionally in the closed position or in the Keep the release position under pre-tension.
  • the Tabs are in on the side panels trained recordings held without drilling for the pins of the tabs must be provided in the contact. This also eliminates the reduction in cross-section in the area of these holes, so that, due to the reduced electrical Contact resistance, a correspondingly smaller one Dimensioning of the contact becomes possible.
  • the side plates are connected via at least one web, which overlaps another free flank of the movable contact.
  • This allows the side panels to become a common component can be summarized, if necessary, simply on the movable Contact can be snapped.
  • the flanks of the movable contact associated with the side plates embossed alignment projections with associated recesses the side panels work together to secure the side panels and position it exactly.
  • the circuit breaker can be a circuit breaker or also another switch to be operated.
  • Movable contact shown in a perspective view.
  • This Movable contact can preferably be in a circuit breaker be used, its structure and mode of action in essentially the circuit breaker shown in Fig. 2 and Fig. 3 like. Consequently, such use will be short here will not be described again.
  • Fig. 1 shows a movable contact 10 on its two Side surfaces or flanks 13 (only one is visible in FIG. 1) is provided with side plates 11.
  • the side plates 11 are connected to each other via a web 12 which has a side surface or flank 14 of the movable contact 10 overlaps.
  • the jetty 1 can be made in two parts, according to FIG each a web half in the extension of the side plate 11 extends and the contour of the contact 10 is bent following.
  • On the junction of the two web halves will be the two Side panels during assembly e.g. by welding, soldering, Flanges etc. connected to each other so that the side plates 11th are firmly attached to the contact 10.
  • a corresponding Web (not shown) provided.
  • the web 12 can be continuous, the two Side plates 11 connecting and elastically deformable are executed so that the side plates 11 simply on the Contact 10 can be plugged on. It is preferably on the edges of the side plates 11 facing away from the web 12 corresponding locking edge or locking lug (not shown) formed which cooperates with an edge of the contact 10.
  • the projection 41 forms one half of the bearing.
  • the arrangement of this projection 41 according to FIG Contact 10 is not pierced by a hole, so that electrical resistance is reduced. Consequently, the Contact 10 dimensioned smaller for the same current value become.
  • the side plates 11 can be made of sheet steel, other sheet metal or also be made of plastic.
  • sheet metal i.e. cold-formable material
  • the projections can be formed directly, so that a time-consuming post-processing is not necessary. It can other materials can also be used, such as Metal alloys that give shape in the casting or die casting process can be processed.
  • Fig. 1 shows further formed in the side plates 11 Recordings 61 for tabs 50.
  • the receptacles 61 correspond to the pins 6 in FIGS. 2 and 3 as well as the tabs 50, so that here a repetition of the Description of the mode of action can be dispensed with.
  • the recordings 61 in the side plates 11 allow one secure hold of the tabs 50 on the side plates 11 and movable contact 10 without the contact 10 penetrating Holes are required. Analogous to the comments on the Projection 41 thereby reduces the cross section avoided and the advantages described there are achieved.
  • Fig. 1 there are also guide projections 80 on the side plates 11 designed for additional guidance of the movable Serves contact 10 in its housing (not shown).
  • This Guide projections 80 act with curved guides (not shown) together in the housing and thereby relieve the projection 41st
  • the projections 41 on the side plates also replaced by pins attached to the side plates become.
  • These lifts can be screwed in, for example, caulked, soldered or welded.
  • a such modification is also in the lead possible.

Landscapes

  • Breakers (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
EP00953033A 1999-07-20 2000-07-11 Bewegbarer kontakt mit niedrigem elektrischen widerstand Expired - Lifetime EP1196936B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE1999133919 DE19933919B4 (de) 1999-07-20 1999-07-20 Bewegbarer Kontakt mit niedrigem elektrischen Widerstand
DE19933919 1999-07-20
PCT/EP2000/006572 WO2001006530A1 (de) 1999-07-20 2000-07-11 Bewegbarer kontakt mit niedrigem elektrischen widerstand

Publications (2)

Publication Number Publication Date
EP1196936A1 EP1196936A1 (de) 2002-04-17
EP1196936B1 true EP1196936B1 (de) 2004-03-03

Family

ID=7915372

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00953033A Expired - Lifetime EP1196936B1 (de) 1999-07-20 2000-07-11 Bewegbarer kontakt mit niedrigem elektrischen widerstand

Country Status (8)

Country Link
EP (1) EP1196936B1 (zh)
JP (1) JP4480312B2 (zh)
CN (1) CN1214434C (zh)
AU (1) AU6563000A (zh)
DE (1) DE19933919B4 (zh)
ES (1) ES2214299T3 (zh)
PL (1) PL196125B1 (zh)
WO (1) WO2001006530A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9190223B2 (en) 2011-11-02 2015-11-17 Siemens Aktiengesellschaft Rotor housing of an electrical switching device and electrical switching device

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10013160B4 (de) * 2000-03-17 2006-07-06 Aeg Niederspannungstechnik Gmbh & Co Kg Schaltwelleneinheit für einen Schalter
DE102005050705B4 (de) * 2005-10-05 2008-07-31 Moeller Gmbh Kontaktsystem für einen Niederspannungsschalter
DE102007040163A1 (de) 2007-08-21 2009-02-26 Siemens Ag Schaltgerät mit einer Schaltwelle zur Lagerung einer Drehkontaktbrücke sowie mehrpolige Schaltgeräteanordnung
DE102008049442B4 (de) * 2008-09-29 2015-02-19 Siemens Aktiengesellschaft Drehkontaktsystem für ein Schaltgerät, insbesondere für ein Leistungsschaltgerät, mit einem radial von innen aufgebrachten schließenden Drehmoment
DE102009052965B3 (de) 2009-11-12 2011-07-21 Eaton Industries GmbH, 53115 Rotativer Doppelkontakt
DE102010035625A1 (de) * 2010-08-24 2012-03-01 Siemens Aktiengesellschaft Elektrischer Schalter und Verfahren zum Montieren einer Schalteinheit eines elektrischen Schalters
DE102011075729A1 (de) * 2011-05-12 2012-11-15 Siemens Aktiengesellschaft Elektrischer Schalter
CN104465254A (zh) 2013-09-24 2015-03-25 上海电科电器科技有限公司 旋转双断点触头
CN105261528A (zh) * 2015-11-10 2016-01-20 上海电器股份有限公司人民电器厂 联结架及其断路器

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2622347B1 (fr) * 1987-10-26 1995-04-14 Merlin Gerin Dispositif de coupure pour un disjoncteur multipolaire a contact rotatif double
SE461557B (sv) * 1989-04-28 1990-02-26 Asea Brown Boveri Kontaktanordning foer elkkopplare
SE9002264L (sv) * 1990-06-27 1991-12-28 Asea Brown Boveri Kontaktanordning foer elkopplare
FR2688626B1 (fr) * 1992-03-13 1994-05-06 Merlin Gerin Disjoncteur a boitier moule a pont de contacts freine en fin de course de repulsion.
IT1292453B1 (it) * 1997-07-02 1999-02-08 Aeg Niederspannungstech Gmbh Gruppo rotante di contatti per interrutttori di alta portata
US6114641A (en) * 1998-05-29 2000-09-05 General Electric Company Rotary contact assembly for high ampere-rated circuit breakers
DE19836754B4 (de) * 1998-08-13 2006-10-05 Aeg Niederspannungstechnik Gmbh & Co Kg Schaltwelleneinheit für Schalter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9190223B2 (en) 2011-11-02 2015-11-17 Siemens Aktiengesellschaft Rotor housing of an electrical switching device and electrical switching device

Also Published As

Publication number Publication date
JP2003505832A (ja) 2003-02-12
AU6563000A (en) 2001-02-05
PL196125B1 (pl) 2007-12-31
PL353338A1 (en) 2003-11-17
CN1361917A (zh) 2002-07-31
ES2214299T3 (es) 2004-09-16
DE19933919A1 (de) 2001-01-25
WO2001006530A1 (de) 2001-01-25
JP4480312B2 (ja) 2010-06-16
DE19933919B4 (de) 2009-09-10
CN1214434C (zh) 2005-08-10
EP1196936A1 (de) 2002-04-17

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