EP0120422A2 - Déclencheur magnétique - Google Patents

Déclencheur magnétique Download PDF

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Publication number
EP0120422A2
EP0120422A2 EP84102918A EP84102918A EP0120422A2 EP 0120422 A2 EP0120422 A2 EP 0120422A2 EP 84102918 A EP84102918 A EP 84102918A EP 84102918 A EP84102918 A EP 84102918A EP 0120422 A2 EP0120422 A2 EP 0120422A2
Authority
EP
European Patent Office
Prior art keywords
magnetic
coil body
armature
magnetic core
core
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Withdrawn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
EP84102918A
Other languages
German (de)
English (en)
Other versions
EP0120422A3 (fr
Inventor
Rolf Goehle
Volker Schmitt
Erwin Muders
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.)
BBC Brown Boveri AG Germany
Original Assignee
Brown Boveri und Cie AG Germany
BBC Brown Boveri AG Germany
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 Brown Boveri und Cie AG Germany, BBC Brown Boveri AG Germany filed Critical Brown Boveri und Cie AG Germany
Publication of EP0120422A2 publication Critical patent/EP0120422A2/fr
Publication of EP0120422A3 publication Critical patent/EP0120422A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2454—Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements

Definitions

  • the invention relates to a magnetic release for an electrical installation device, in particular for a circuit breaker, with a magnetic core, a magnet armature interacting with it, a coil body receiving the winding, which comprises the magnetic core and the magnet armature, and with a magnet yoke.
  • Magnetic triggers of this type which are preferably used in line circuit breakers and serve there both for opening the movable contact lever and for triggering the switch lock in the event of a short circuit, have become known, for example, from DE-OS 25 31 215.
  • the coil former is designed as a plastic part that is closed on one side except for an opening for the passage of the impact anchor and is completely open on the other side. On the closed side radially outward projections are provided, with which the coil body can be locked on the magnetic yoke.
  • the assembly is as far as it is relatively complicated, since the magnetic yoke together with the magnetic core, the magnet armature, the coil body and the spring does not form a coherent unit, but consists of individual, loose parts that become their unit only when they are mounted on the magnetic yoke. The individual parts can easily be lost during assembly.
  • the magnetic yoke consists of two parts that have to be connected together to hold the magnetic armature and magnetic core.
  • the assembly of the arrangement is similar to that in DE-OS 25 31 215 in that it is complicated in that the coil body together with the magnetic core and the magnetic yoke form an associated unit.
  • the object of the invention is to create a trigger with a few parts as a complete unit with low tolerance of the air gap, in which the assembly is significantly simplified.
  • the tubular coil body has at least one radially inwardly projecting tab on its two end faces, against which the magnet armature and the magnet core is pressed by means of a spring located between the two.
  • the coil form, the armature, the magnetic core and the between the two located spring is a structural unit, the parts of which are captive before final assembly and the attachment of the arrangement to the magnetic yoke, in which the coil body holds the parts located inside due to its tabs.
  • Another embodiment of the invention can be that the magnetic core partially protrudes from the coil body; this protruding area can then be used to attach the magnetic core and thus the coil body with the magnetic armature to the magnetic yoke e.g. serve by riveting.
  • the coil former designed as a coil tube, is made of non-magnetic material and can be bent from sheet metal.
  • the coil tube can additionally be coated with an insulating plastic (e.g. polyester) at least on its outer surface.
  • the tabs would be resiliently molded onto the coil body in such a way that when the magnetic core and armature are inserted, they are bent open, snap back again after completion of the assembly process and hold the parts inside the coil body.
  • the tabs can also spring; in general they are before Assembly bent and be. after the assembly of the magnetic armature and core has been plastically bent inwards.
  • the magnetic release according to Figure 1 is installed in a circuit breaker, as is customary in the trade. It generally serves as a magnetic release for short-circuit release.
  • the magnetic release which has the overall reference number 10 and is shown in the assembled state in FIG. 1, has a coil former 11 which is tubular and is provided with radially inwardly projecting tabs 12 and 13 on its two ends. Inside the coil body is a magnetic core 14, which has at one end a recess 15, the outer diameter of which corresponds to the distance between the two facing tabs 13, so that the magnetic core 14 with this recess from the coil body 11, the space between the penetrating both tabs 13, protrudes. On the recess 15, a projection 16 is provided, the function of which is explained below.
  • a magnet armature 17 cooperates with the magnet core 14, the outside diameter of which is adapted in the same way as the outside diameter of the magnet core 14 inside the coil body to the inside diameter of the coil body 11 and is greater than the distance between the opposing tabs 12, so that the magnet armature in the assembled state 17 cannot fall out of the bobbin 11 to the right.
  • the same also applies to the magnetic core 14 with respect to the tabs 14.
  • a recess 18 and 19 is provided on each of the two opposite end faces of the magnetic core 14 and magnetic armature 17, which are used to receive a helical spring 20 and to guide it.
  • a release rod 21 which protrudes through a bore 22 of the magnet core 14 on the left side from the magnet armature and ends in a thickening 23.
  • a pin 24 is formed, which has a plate-shaped extension 25 at its free end. The latter extension engages behind a contact lever on which the movable contact piece of the circuit breaker is fastened, in which the magnetic release 10 is inserted.
  • the magnetic release also has a yoke 26 which is approximately U-shaped with two legs 28 and 29 arranged perpendicular to a web 27.
  • the leg 28 has a through opening 30 through which the extension 16 of the magnetic core 14 passes can be; after the extension 16 has been pushed through, the extension is riveted at 31 to the leg 28.
  • the other leg 29 has an opening 32 through which the coil body 11 protrudes, such that the leg 29 surrounds the magnet armature 17, and indeed its distance from the leg 28 is selected so that the leg 29 continuously encompasses the magnet armature 17, that is to say also then , if, in the event of tripping, the two opposite end faces of the magnet armature and magnet core touch.
  • a winding 33 is arranged around the coil former.
  • Figure 2 shows the bobbin 11 before assembly.
  • the coil body 11 is bent from a sheet metal part made of non-magnetic special material;
  • the parting line 35 can be seen in FIG. 2.
  • the sheet metal part is provided with the tabs 12 and 13 from the front and during the bending process or afterwards the tabs 13 are already bent inwards in the form of an L-shaped extension.
  • the two opposite tabs 12 are L-shaped in the same way as the tabs 13, but are bent outwards before assembly, such that the inside diameter of the opposite tab ends in the period before assembly is at least not less than the inside diameter of the Bobbin 11.
  • the magnetic core is first inserted in such a way that the recess 15 comes to lie between the opposing tabs 13. Then the spring is inserted and the magnetic core 17 in such a way that the spring 20 can engage both in the recess 18 on the magnetic core 14 and in the recess 19 on the armature 17. Then ⁇ the two tabs 12 are bent back to one another so that the position of the tabs 12 shown in FIG. 1 is reached, in which the magnet armature 17 is prevented from falling out of the inside of the coil body because the distance between the tab ends is smaller than the magnet armature diameter.
  • the unit of magnetic core, armature, compression spring and coil body is now formed; the unit no longer consists of several individual parts that can be lost, but rather the unit can be fed to a further assembly step for assembling the entire circuit breaker.
  • This next step consists in that the extension 16 of the magnetic core is inserted through the recess 30 of the yoke or leg and then riveted at 31. Then the rod 21 is still inserted. This completes the entire assembly of the magnetic release with magnetic yoke.
  • the magnet armature 17 is pulled against the pressure of the spring 20 against the magnetic core 14, the armature pulling the extension lever 25 (not shown) of the circuit breaker into the switched-off position.
  • the switch lock of the circuit breaker also not shown, is unlocked via the release pin 21, 23. While the magnet armature 17 automatically returns to the ready-to-release position due to the spring 20, the rod is moved from the switch lock to the ready-to-release position during the manual switch-on process, i.e. pressed inwards against the bottom of the recess 19 in the magnet armature 17.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Breakers (AREA)
  • Impact Printers (AREA)
EP84102918A 1983-03-25 1984-03-16 Déclencheur magnétique Withdrawn EP0120422A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833310914 DE3310914A1 (de) 1983-03-25 1983-03-25 Magnetausloeser
DE3310914 1983-03-25

Publications (2)

Publication Number Publication Date
EP0120422A2 true EP0120422A2 (fr) 1984-10-03
EP0120422A3 EP0120422A3 (fr) 1985-05-29

Family

ID=6194651

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84102918A Withdrawn EP0120422A3 (fr) 1983-03-25 1984-03-16 Déclencheur magnétique

Country Status (2)

Country Link
EP (1) EP0120422A3 (fr)
DE (1) DE3310914A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0199980A2 (fr) * 1985-04-30 1986-11-05 Asea Brown Boveri Aktiengesellschaft Déclencheur à aimant
WO1997024746A1 (fr) * 1995-12-28 1997-07-10 Felten & Guilleaume Austria Ag Induit pour declencheur magnetique
WO1997048113A1 (fr) * 1996-06-14 1997-12-18 Enpece Sigma Ab Systeme de commutation et methode de montage
WO2000021109A1 (fr) * 1998-10-02 2000-04-13 Aeg Niederspannungstechnik Gmbh & Co. Kg Systeme magnetique
DE19952180A1 (de) * 1999-10-29 2001-05-03 Moeller Gmbh Elektrisches Schutzschaltgerät
EP1981051A3 (fr) * 2007-04-09 2010-04-14 EATON Corporation Appareil de bobine électromagnétique utilisant un amplificateur de flux magnétique, et accessoire et appareil de commutation électrique l'employant

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3619239A1 (de) * 1986-06-07 1987-12-10 Kloeckner Moeller Elektrizit Schnellausloeser fuer leitungsschutzschalter
DE3908350A1 (de) * 1989-03-15 1990-09-20 Asea Brown Boveri Elektrische spule
DE19952178A1 (de) * 1999-10-29 2001-05-03 Moeller Gmbh Elektrisches Schutzschaltgerät
DE102012014670B4 (de) * 2012-07-25 2014-05-22 Abb Ag Magnetsystem und Installationsschaltgerät als Leitungsschutzschalter und Herstellungsverfahren

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2418862A1 (de) * 1974-04-19 1975-10-30 Licentia Gmbh Magnetisches ausloesesystem fuer leitungsschutzschalter
DE2531215A1 (de) * 1975-07-12 1977-02-03 Bbc Brown Boveri & Cie Magnetischer ausloeser
GB2000379A (en) * 1977-06-27 1979-01-04 Weber Ag Fab Elektro Magnetic trip mechanism for automatic cut-out

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE632371C (de) * 1935-04-17 1936-07-11 Franz Baumgartner Schaltelektromagnet
DE1096469B (de) * 1959-01-24 1961-01-05 Elektroinstallation Annaberg V Elektromagnetische Schnellausloese-vorrichtung fuer UEberstromschalter, insbesondere Kleinselbstschalter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2418862A1 (de) * 1974-04-19 1975-10-30 Licentia Gmbh Magnetisches ausloesesystem fuer leitungsschutzschalter
DE2531215A1 (de) * 1975-07-12 1977-02-03 Bbc Brown Boveri & Cie Magnetischer ausloeser
GB2000379A (en) * 1977-06-27 1979-01-04 Weber Ag Fab Elektro Magnetic trip mechanism for automatic cut-out

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0199980A2 (fr) * 1985-04-30 1986-11-05 Asea Brown Boveri Aktiengesellschaft Déclencheur à aimant
EP0199980A3 (fr) * 1985-04-30 1989-05-10 Asea Brown Boveri Aktiengesellschaft Déclencheur à aimant
WO1997024746A1 (fr) * 1995-12-28 1997-07-10 Felten & Guilleaume Austria Ag Induit pour declencheur magnetique
WO1997048113A1 (fr) * 1996-06-14 1997-12-18 Enpece Sigma Ab Systeme de commutation et methode de montage
WO2000021109A1 (fr) * 1998-10-02 2000-04-13 Aeg Niederspannungstechnik Gmbh & Co. Kg Systeme magnetique
DE19952180A1 (de) * 1999-10-29 2001-05-03 Moeller Gmbh Elektrisches Schutzschaltgerät
EP1981051A3 (fr) * 2007-04-09 2010-04-14 EATON Corporation Appareil de bobine électromagnétique utilisant un amplificateur de flux magnétique, et accessoire et appareil de commutation électrique l'employant

Also Published As

Publication number Publication date
DE3310914C2 (fr) 1991-03-28
EP0120422A3 (fr) 1985-05-29
DE3310914A1 (de) 1984-09-27

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Effective date: 19860130

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Inventor name: SCHMITT, VOLKER

Inventor name: GOEHLE, ROLF

Inventor name: MUDERS, ERWIN