EP2737505A1 - Ensemble curseur de contact pour une unité de commutation, en particulier pour un disjoncteur de puissance - Google Patents

Ensemble curseur de contact pour une unité de commutation, en particulier pour un disjoncteur de puissance

Info

Publication number
EP2737505A1
EP2737505A1 EP12713914.5A EP12713914A EP2737505A1 EP 2737505 A1 EP2737505 A1 EP 2737505A1 EP 12713914 A EP12713914 A EP 12713914A EP 2737505 A1 EP2737505 A1 EP 2737505A1
Authority
EP
European Patent Office
Prior art keywords
switching
contact
unit
piece
circuit breaker
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.)
Withdrawn
Application number
EP12713914.5A
Other languages
German (de)
English (en)
Inventor
Bernhard Rösch
Alfred SCHNELLINGER
Alexander Spies
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 EP2737505A1 publication Critical patent/EP2737505A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H15/00—Switches having rectilinearly-movable operating part or parts adapted for actuation in opposite directions, e.g. slide switch
    • H01H15/02—Details
    • H01H15/06—Movable parts; Contacts mounted thereon
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2463—Electromagnetic mechanisms with plunger type armatures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/40—Combined electrothermal and electromagnetic mechanisms

Definitions

  • the invention relates to a contact slide unit for a switching unit, in particular for a circuit breaker, on ⁇ facing a contact slide, and a switching piece. Furthermore, the invention relates to a switching unit, in particular a circuit breaker, comprising a contact slide unit with a contact slide and a contact piece.
  • Switching units serve, among other things, the safe switching off in the event of a short circuit and thus protect consumers and systems. Further, electrical or mechanical switching units are suitable for ⁇ be instinctive, manual switching of consumers and for the safe separation of a plant from the power supply during maintenance or change in the plant. Electrical switching units are often operated electromagnetically.
  • switching units or Leis ⁇ tion switch are technically high quality electrical switching ⁇ devices with integrated protection for motors, lines, transformers and generators. They are used in places with low switching frequency. Such switching units are suitable in addition to the short circuit protection for overload protection. In the case of a short circuit, an electrical switching ⁇ unit or a circuit breaker switches off an electrical system safely. Thus, these provide protection against overload. Every conductor through which electricity flows heats up more or less. The heating depends on the ratio of the current intensity to the conductor cross-section, the so-called current density. The current density must not be too high, otherwise the conductor insulation will be spattered and possibly cause a fire due to excessive heating can. To protect electrical equipment against these damaging effects, switching units or circuit breakers are used as overcurrent protective devices.
  • Circuit breakers have two separate release mechanisms for overload and short-circuit protection. Both triggers are connected in series.
  • the short-circuit protection is provided by an electromagnetic release that works almost instantaneously. In the event of a short circuit, the electromagnetic release releases a circuit breaker of the circuit breaker without delay. A switching armature disconnects the contactor before the short-circuit current can reach its maximum value.
  • Known switching units have a contact slide unit with a contact slide and a movable contact piece.
  • the movable contact member further includes electrical contacts ⁇ Kon.
  • switching units have fixed contacts to a power line.
  • the electrical contacts of the switch movable piece rela ⁇ hung example of the circuit breaker.
  • the electrical contacts of the movable contact piece of the fixed contacts are released so that the current flow is awakebro ⁇ chen.
  • the movable contact is released from the fixed contacts.
  • short-circuit shutdowns in a switching unit or a circuit breaker it may come to the rotation of the movable contact piece about its longitudinal axis after releasing the movable contact piece.
  • the movable contact piece rotates about its longitudinal axis, this is also referred to as a bridge rotator. That is, the movable contact piece then returns after the rotation is no longer in its original position, but remains in the rotated position.
  • Known contact slides of switching units often have two guide systems, an inner and an outer guide System up.
  • the outer guide system is used when the switching operation, that is, the switching on or off, via a switching mechanism of the switching unit or the circuit breaker takes place. This does not create a bridge deterrent.
  • the inner guidance system comes in short circuit used when the switching operation of a switching armature, often a plunger, the switching unit or the Leis ⁇ processing switch takes place. That is, when switching off due to a short circuit, the movable contact piece along the inner guide system leads the contact slide ahead, rebounds on impact surfaces in the so-called lower part of the switching unit or the circuit breaker and flies back along the inner guide system.
  • the object of the present invention is to provide a contact slide unit for a switching unit, in ⁇ particular for a circuit breaker, the like is formed, that bridgewire of the switching piece avoided ⁇ the.
  • Switching units according to the invention may be electrical switching units, in particular electromagnetically operated switching units or switches, but also mechanical switching units.
  • the electrical switching units include in particular circuit breakers.
  • this object is achieved by a Needlesschie ⁇ ber for a switching unit, in particular for a power switch ⁇ having a contact slide and a contact piece.
  • the invention is characterized in that the switching piece has a passage through which a plunger is guided.
  • the switching piece or the switching bridge is thus ge ⁇ leads by the extended plunger.
  • the passage at the bridge provides a vertical guidance during the bridge flight. This prevents twisting of the bridge.
  • the plunger thus receives an additional paragraph, the clear leadership of the switching bridge made ⁇ light.
  • the novel contact piece according to the invention offers the advantages that only a simple passage has to be positioned in the bridge, and that no additional attachment which acts as a bridge inhibitor is required.
  • the bridge is clearly guided by the extended ram, that is, by the passage, the risk of jamming and twisting in the contact slide is greatly minimized. It entste ⁇ hen also no extra charge since the extension of the Plunger requires only the use of a metal core, to prevent a rupture of the plunger.
  • Lead see superiors, that on the switching piece, respectively at the Maisbrü ⁇ blocks preferably two oppositely arranged horns are stamped on, which preferably serve the anti-rotation protection.
  • guide grooves are embedded in the contact slide, which keep these horns and thus the bridge in vertical and thus horizontal position within allowable Vercardskyn.
  • the guide grooves are matched to the bridge horns so that the tolerances are suitable for production and prevent rotation of the bridge. This rotation is then effectively prevented around both the y and x axes.
  • the switching piece according to the invention is preferably designed web-shaped and also has a contact at the end. These two contacts go with two fixed contacts in the on ⁇ switched state of the switching unit, in which the switching element is integrated, a conductive connection.
  • two preferably opposing projections are arranged, which engage in guide grooves of the contact slide.
  • two oppositely disposed and arranged at a preferably 90 ° angle to the switching piece bridge horns are positioned, which form during the twisting contact points with the inner wall of the contact slide, so that further rotation is prevented by the inner wall.
  • a passage is centered in the middle region of the switching piece arranged, through which the slide ⁇ arranged in the contact plunger is guided.
  • the contact slide unit of the invention prevents the passage in the contact piece, through which an extended STOE is guided Key, a complete rotation of the Kunststoffbrü ⁇ blocks. This effect is enhanced by embossed Stabilmaschinesele ⁇ elements in the form of bridge horns on the contact piece.
  • the contact slide according to the invention shall prevent standardize a twisted or upright standing bridge ver ⁇ that would cause the switch function ⁇ disabled.
  • the contact piece according to the invention requires no additional effort.
  • the present technical solution is not Flointen ⁇ siv, since only an additional metal core for the ram to be extended is needed.
  • Figure 1 is a sectional view of a contact slider unit according to the invention with fixed contact pieces and Matterlastaus ⁇ solver;.
  • FIG. 2 shows a perspective view of an inventive switching piece.
  • the contact slide unit 1 shows a contact slide unit 1 according to the invention with a contact slide 2 a and a movable contact piece 2, which is arranged opposite to fixed contact pieces 3.
  • the fixed contact pieces 3 are preferably U-shaped with two legs 4, 5, which are interconnected by a transition region 6.
  • a short-circuit release 7 is angeord ⁇ net.
  • the short-circuit release 7 has a carrier part 8, preferably made of plastic, in which an armature 9 with a plunger 10, which is arranged within a pole 11 and projects into the contact slide unit 1, is located.
  • a coil 12 is wound.
  • the coil 12 is surrounded by a yoke 13 and a magnetic plate 14.
  • an overload release 15 which has a bimetal 16 around which a heating conductor 17 is wound.
  • the switching piece 2 is provided with a passage 18 through which the plunger 10 is guided.
  • a shoulder 19 which is formed as a metal core.
  • the contact piece 2 according to the invention is shown.
  • the contact piece 2 according to the invention is preferably mig stegför- formed and has a central portion 20, are arranged on wel ⁇ chem opposite projections 21, 22nd These projections 21, 22 engage in guide grooves of the contact slide 2a.
  • At these projections 21, 22 are preferably ⁇ two opposite and at a preferably 90 ° - angle to the contact piece 2 arranged bridge horns 23, 24, positioned that form during the turning operation points of contact with the inner wall of the contact slide 2a, so that through the inner wall further twisting is prevented.
  • a passage 18 is arranged, through which the plunger 10 arranged in the contact slide 2a is feasible.
  • the contact slide unit according to the invention prevents a complete rotation of the Kunststoffbrü ⁇ bridge by the passage in the contact piece through which an extended plunger is guided. This effect is enhanced by embossed stabilizing elements of bridge horns on the contact piece. In particular, a twisted or upright bridge is prevented by the contact slide unit according to the invention, which would cause the switch is not functional. Manufacturing technology, the contact piece according to the invention requires no additional effort, since only one

Abstract

ensemble curseur de contact (1) pour une unité de commutation, en particulier pour un disjoncteur de puissance, qui comporte un curseur de contact (2a) et un élément de commutation (2). La présente invention se caractérise en ce que l'élément de commutation (2) comporte un passage (18) dans lequel est introduit une tige (10).
EP12713914.5A 2012-03-21 2012-03-21 Ensemble curseur de contact pour une unité de commutation, en particulier pour un disjoncteur de puissance Withdrawn EP2737505A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2012/054971 WO2013139386A1 (fr) 2012-03-21 2012-03-21 Ensemble curseur de contact pour une unité de commutation, en particulier pour un disjoncteur de puissance

Publications (1)

Publication Number Publication Date
EP2737505A1 true EP2737505A1 (fr) 2014-06-04

Family

ID=45953095

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12713914.5A Withdrawn EP2737505A1 (fr) 2012-03-21 2012-03-21 Ensemble curseur de contact pour une unité de commutation, en particulier pour un disjoncteur de puissance

Country Status (4)

Country Link
US (1) US9362067B2 (fr)
EP (1) EP2737505A1 (fr)
CN (1) CN104011817A (fr)
WO (1) WO2013139386A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10109438B2 (en) 2014-05-09 2018-10-23 Siemens Aktiengesellschaft Method and contact slide unit for a switch unit
DE102017109210B4 (de) * 2017-04-28 2023-10-12 Tdk Electronics Ag Relais

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2951133A (en) * 1954-01-11 1960-08-30 Cutler Hammer Inc Hermetically sealed electromagnetic contactors and the like
FR1160431A (fr) * 1956-10-30 1958-07-15 Perfectionnements aux contacts électriques mobiles
US2985736A (en) 1959-06-08 1961-05-23 Allen Bradley Co Reversible contact structure
DE1154553B (de) * 1961-06-27 1963-09-19 Licentia Gmbh Kontakttraeger mit beweglichen Kontakten, z. B. bei elektrischen Leistungsschaltern
IT7822700V0 (it) 1978-09-07 1978-09-07 Bassani Spa Struttura di contatto mobile, per contattori elettrici.
DE19549179B4 (de) 1995-12-30 2005-10-27 Robert Bosch Gmbh Einrückrelais für eine Andrehvorrichtung
US6198058B1 (en) 1999-09-27 2001-03-06 Rockwell Technologies, Llc Switch contact mechanism
FR2895143B1 (fr) 2005-12-15 2011-03-18 Valeo Equip Electr Moteur Equipage mobile pour contacteur electromagnetique et contacteur comportant un tel equipage
CN200953287Y (zh) 2006-10-20 2007-09-26 株洲市田心铁路电力机车配件厂 一种自研磨防尘自净式辅助触头
DE102007015793B4 (de) 2007-03-30 2009-02-05 Siemens Ag Kontaktschiebereinheit für eine Schalteinheit, insbesondere einen Leistungsschalter.
DE102009047080B4 (de) 2009-11-24 2012-03-29 Tyco Electronics Amp Gmbh Elektrischer Schalter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2013139386A1 *

Also Published As

Publication number Publication date
US20140231235A1 (en) 2014-08-21
US9362067B2 (en) 2016-06-07
CN104011817A (zh) 2014-08-27
WO2013139386A1 (fr) 2013-09-26

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