WO2001006530A1 - Bewegbarer kontakt mit niedrigem elektrischen widerstand - Google Patents
Bewegbarer kontakt mit niedrigem elektrischen widerstand Download PDFInfo
- Publication number
- WO2001006530A1 WO2001006530A1 PCT/EP2000/006572 EP0006572W WO0106530A1 WO 2001006530 A1 WO2001006530 A1 WO 2001006530A1 EP 0006572 W EP0006572 W EP 0006572W WO 0106530 A1 WO0106530 A1 WO 0106530A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- movable contact
- side plates
- contact according
- bearing half
- contact
- Prior art date
Links
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, in particular for a circuit breaker, according to the preamble of claim 1.
- Circuit breakers are built in a variety of forms to protect circuits from overload.
- the core of such a circuit breaker is a movable contact, which in the
- the circuit In response to an overload of the circuit to be protected, the circuit interrupts.
- the drive for the interruption movement of the movable contact can take place in various ways according to the form of the overload to be monitored or manually.
- a movable contact 1 which is rotatable about a central pin 4, is held rotatably relative to a rotor 3.
- the movable contact 1 In the position shown in Fig. 2, the movable contact 1 is in contact with fixed contacts 2, whereby the circuit to be protected is closed.
- tabs 5 are shown in FIG. 2, which are rotatably held on the movable contact 1 by means of pins 6.
- the central pin 4 penetrates the contact 1 around it on both sides, i.e. to be supported on the rotor 3 or on a housing 8 on the front side shown in the drawing and the rear side facing away from this side.
- the tabs 5 are provided symmetrically on the front and rear of the movable contact 1 and the pins 6 penetrate the movable contact in the direction perpendicular to the plane of the drawing in FIG. 2, in each case by a pair of tabs on the front and rear of the movable contact 1 hold.
- the tabs 5 press radially outward of the rotor 3, displaceable pins 7 against the Spring force of a tension spring 9 connecting the pins 7 to one another radially outward. If the tabs 5 are in the direction of the diameter of the rotor 3, the movable contact 1 is in a dead center position in which the spring force of the spring 9 is greatest. After exceeding or crossing this dead center position, the tabs 5 move towards one another again under the spring force until the movable contact is in the release position shown in FIG. 3, in which the connection of the fixed contacts 2 via the movable contact 1 is interrupted.
- the movable contact 1 is held securely in the release position by the tabs 5, which can only be moved while overcoming the spring force of the tension spring 9.
- the tension spring 9 which tends to rotate the contact 1 counterclockwise via the latches 5 in FIG. 2, ensures the required contact pressure between the movable contact 1 and the fixed contacts 2.
- Pins 4 and 6 introduced into holes which are formed in the movable contact 1.
- the cross section of the movable contact 1 is not available for the current supply; the movable contact has a high electrical resistance. Consequently, the movable contact 1 must be dimensioned such that its smallest cross-section, ie in the region of the holes, is sufficient for the current conduction and thereby satisfies further requirements with regard to the heating etc. of the movable contact by the current flowing therein. This leads to an oversizing of the remaining sections of the movable contact, which leads to a high consumption of expensive copper. It should be noted that such circuit breakers are made millions of times, so that a reduction in material requirements brings a significant cost reduction for the manufacturer and a conservation of natural material and energy resources.
- the oversizing prevents a reduction in the movable contact, so that the size of the
- Circuit breaker which is also determined by the dimensions of the movable contact, can not be reduced.
- the object of the invention is therefore to propose a compact movable contact with low electrical resistance, with which the material consumption of copper and the overall size, in particular of a circuit breaker, can be reduced overall.
- a movable contact in particular for a circuit breaker, which is rotatably mounted concentrically with a rotor, connects two fixed contacts to one another in the closed position and can be moved by the rotor along a pole path into a release position in which the fixed contacts are separated from one another, whereby the movable contact is provided on two of its flanks with a rare plate with a bearing half for the rotatable mounting of the movable contact.
- Cross-sectional area in this area of the contact in front and the movable contact has a lower electrical resistance, so that the contact can be designed for the same current value with a smaller cross-section than the conventional contact with a bore that from the center pin is reached. Consequently, the contact can be smaller and have a smaller volume of copper, so that the copper requirement for the contact is reduced by the design according to the invention.
- the smaller contact can also reduce the size of the circuit breaker.
- the bearing half is preferably a projection extending from the respective side plate.
- the contact is provided with at least two pivotable tabs, which are resiliently connected to one another and are slidably and pivotably mounted on a pole track housing in order to move the movable contact while crossing the dead center position of the tabs either in the closed position or in the release position keep under tension.
- the tabs are held in receptacles formed on the side plates without having to provide holes for the pins of the tabs in the contact. This also eliminates the reduction in cross section in the area of these bores, so that, due to the reduced electrical resistance of the contact, a correspondingly smaller dimensioning of the contact is possible.
- the side plates are connected via at least one web which engages over another, free flank of the movable contact.
- the side plates can be combined to form a common component, which if necessary can simply be snapped onto the movable contact.
- the flanks of the movable contact assigned to the side plates preferably have embossed alignment projections which cooperate with assigned recesses in the side plates in order to position the side plates securely and precisely.
- the circuit breaker can be a circuit breaker or another switch to be operated.
- the invention is now based on a preferred
- Figure 1 is a perspective view of an embodiment of the movable contact according to the invention.
- Fig. 2 is a partially sectioned view of a conventional contact installed in a circuit breaker and in the closed position;
- Fig. 3 is a view corresponding to Fig. 2, showing the conventional movable contact in the dynamic open position.
- FIG. 1 shows an embodiment of the movable contact according to the invention in a perspective view.
- This movable contact can preferably be used in a circuit breaker, the construction and mode of operation of which are essentially the same as the circuit breaker shown in FIGS. 2 and 3. Accordingly, such use is not described again here for brevity.
- Fig. 1 shows a movable contact 10, which is provided on its two side surfaces or flanks 13 (only one is visible in Fig. 1) with side plates 11.
- the side plates 11 are connected to one another via a web 12 which engages over a side surface or flank 14 of the movable contact 10.
- the web 12 can be designed in two parts according to FIG. 1, one web half extending in each case in the extension of the side plate 11 and the contour of the contact 10 being bent.
- the two Side plates are connected to one another during assembly, for example by welding, soldering, flanging, etc., so that the side plates 11 are firmly attached to the contact 10.
- a corresponding web (not shown) is provided on the lower side of the contact 10 facing away from FIG. 1.
- the web 12 can be made continuous, connecting the two side plates 11 to one another and being elastically deformable, so that the side plates 11 can simply be plugged onto the contact 10.
- a corresponding latching edge or latching lug (not shown), which cooperates with an edge of the contact 10, is preferably formed on the edges of the side plates 11 facing away from the web 12.
- Alignment projections are provided by embossing on the side surface of the contact 10, which cooperate with corresponding alignment bores 81 in the side plates 11. These alignment projections and alignment holes 81 can also serve as locking devices when the side plates 11 are snapped onto the contact 10.
- the side plates 11 may be used in a different way e.g. to be attached to contact 10 by soldering, welding, etc.; In this case, depending on the requirements for strength and the loads that occur, the web 12 may be dispensed with.
- the side plates 11 have a projection 41 which serves for the rotatable mounting of the movable contact 10.
- the projection 41 forms a half of the bearing.
- the contact 10 can be mounted on a rotor (not shown) or on a housing (not shown). 1, the contact 10 is not pierced by a bore, so that its electrical resistance is reduced. Consequently, the Contact 10 can be dimensioned smaller for the same current value.
- the side plates 11 can be made of sheet steel, other sheet metal or plastic.
- sheet metal i.e. cold-formable material
- the production of the projections by embossing or punching is appropriate.
- plastic for example as an injection molded part
- the projections can be molded on directly, so that complex post-processing is not necessary.
- Other materials can also be used, such as metal alloys, which can be shaped in a casting or die-casting process.
- receptacles 61 for tabs 50 formed in the side plates 11.
- the receptacles 61 correspond to the pins 6 in FIGS. 2 and 3 as well as the tabs 50, so that the description of the mode of operation is not repeated here can be.
- the receptacles 61 in the side plates 11 enable the tabs 50 to be held securely on the side plates 11 or on the movable contact 10, without the need for bores penetrating the contact 10. Analogous to the explanations for the projection 41, the reduction in cross-section is thereby avoided and the advantages described there are achieved.
- guide projections 80 are also formed on the side plates 11, which serve to additionally guide the movable contact 10 in its housing (not shown). This
- Guide projections 80 cooperate with arcuate guides (not shown) in the housing and thereby relieve the projection 41. Furthermore, various modifications of the exemplary embodiment shown are possible, which are listed here by way of example and not exhaustively.
- the protrusions 41 on the side plates can also be replaced by pins attached to the side plates. These sifts can be screwed in, caulked, soldered or welded, for example.
- the receptacles for the tabs can have projections that pass through corresponding holes in the tabs.
Landscapes
- Breakers (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL353338A PL196125B1 (pl) | 1999-07-20 | 2000-07-11 | Ruchomy styk o niskiej rezystancji elektrycznej |
AU65630/00A AU6563000A (en) | 1999-07-20 | 2000-07-11 | Displaceable contact having low electrical resistance |
JP2001511704A JP4480312B2 (ja) | 1999-07-20 | 2000-07-11 | 低電気抵抗を伴う可動コンタクト |
EP00953033A EP1196936B1 (de) | 1999-07-20 | 2000-07-11 | Bewegbarer kontakt mit niedrigem elektrischen widerstand |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999133919 DE19933919B4 (de) | 1999-07-20 | 1999-07-20 | Bewegbarer Kontakt mit niedrigem elektrischen Widerstand |
DE19933919.8 | 1999-07-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001006530A1 true WO2001006530A1 (de) | 2001-01-25 |
Family
ID=7915372
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/006572 WO2001006530A1 (de) | 1999-07-20 | 2000-07-11 | Bewegbarer kontakt mit niedrigem elektrischen widerstand |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1196936B1 (de) |
JP (1) | JP4480312B2 (de) |
CN (1) | CN1214434C (de) |
AU (1) | AU6563000A (de) |
DE (1) | DE19933919B4 (de) |
ES (1) | ES2214299T3 (de) |
PL (1) | PL196125B1 (de) |
WO (1) | WO2001006530A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1137038A2 (de) * | 2000-03-17 | 2001-09-26 | AEG Niederspannungstechnik GmbH & Co. KG | Schaltwelleneinheit für einen Schalter |
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 (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0314540A1 (de) * | 1987-10-26 | 1989-05-03 | Merlin Gerin | Ausschaltanordnung für mehrphasenleistungsschalter mit drehbarem Doppelkontakt |
EP0394922A1 (de) * | 1989-04-28 | 1990-10-31 | Asea Brown Boveri Ab | Kontaktanordnung für elektrische Schaltgeräte |
WO1992000598A1 (en) * | 1990-06-27 | 1992-01-09 | Asea Brown Boveri Ab | Contact arrangement for electric switching devices |
EP0560697A1 (de) * | 1992-03-13 | 1993-09-15 | Schneider Electric Sa | Schutzschalter mit Pressformgehäuse mit Verzögerung am Bewegungsende der Kontaktbrückenabstossung |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
-
1999
- 1999-07-20 DE DE1999133919 patent/DE19933919B4/de not_active Expired - Fee Related
-
2000
- 2000-07-11 ES ES00953033T patent/ES2214299T3/es not_active Expired - Lifetime
- 2000-07-11 PL PL353338A patent/PL196125B1/pl unknown
- 2000-07-11 AU AU65630/00A patent/AU6563000A/en not_active Abandoned
- 2000-07-11 EP EP00953033A patent/EP1196936B1/de not_active Expired - Lifetime
- 2000-07-11 CN CN 00810577 patent/CN1214434C/zh not_active Expired - Fee Related
- 2000-07-11 WO PCT/EP2000/006572 patent/WO2001006530A1/de active IP Right Grant
- 2000-07-11 JP JP2001511704A patent/JP4480312B2/ja not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0314540A1 (de) * | 1987-10-26 | 1989-05-03 | Merlin Gerin | Ausschaltanordnung für mehrphasenleistungsschalter mit drehbarem Doppelkontakt |
EP0394922A1 (de) * | 1989-04-28 | 1990-10-31 | Asea Brown Boveri Ab | Kontaktanordnung für elektrische Schaltgeräte |
WO1992000598A1 (en) * | 1990-06-27 | 1992-01-09 | Asea Brown Boveri Ab | Contact arrangement for electric switching devices |
EP0560697A1 (de) * | 1992-03-13 | 1993-09-15 | Schneider Electric Sa | Schutzschalter mit Pressformgehäuse mit Verzögerung am Bewegungsende der Kontaktbrückenabstossung |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1137038A2 (de) * | 2000-03-17 | 2001-09-26 | AEG Niederspannungstechnik GmbH & Co. KG | Schaltwelleneinheit für einen Schalter |
EP1137038B1 (de) * | 2000-03-17 | 2007-05-16 | AEG Niederspannungstechnik GmbH & Co. KG | Schaltwelleneinheit für einen Schalter |
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 |
---|---|
DE19933919B4 (de) | 2009-09-10 |
PL196125B1 (pl) | 2007-12-31 |
ES2214299T3 (es) | 2004-09-16 |
EP1196936A1 (de) | 2002-04-17 |
DE19933919A1 (de) | 2001-01-25 |
CN1361917A (zh) | 2002-07-31 |
AU6563000A (en) | 2001-02-05 |
JP4480312B2 (ja) | 2010-06-16 |
PL353338A1 (en) | 2003-11-17 |
CN1214434C (zh) | 2005-08-10 |
EP1196936B1 (de) | 2004-03-03 |
JP2003505832A (ja) | 2003-02-12 |
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