EP2820658B1 - Elektromagnetischer aktuator mit einer äusseren spule - Google Patents

Elektromagnetischer aktuator mit einer äusseren spule Download PDF

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Publication number
EP2820658B1
EP2820658B1 EP13712870.8A EP13712870A EP2820658B1 EP 2820658 B1 EP2820658 B1 EP 2820658B1 EP 13712870 A EP13712870 A EP 13712870A EP 2820658 B1 EP2820658 B1 EP 2820658B1
Authority
EP
European Patent Office
Prior art keywords
housing
electromagnetic actuator
actuator according
coil
slot
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.)
Active
Application number
EP13712870.8A
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English (en)
French (fr)
Other versions
EP2820658A1 (de
Inventor
Vincent BOITEUX
Edouard Dezille
Pascal FRITSCH
Jean-Marc Voirpin
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.)
Hager Electro SAS
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Hager Electro SAS
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Publication of EP2820658A1 publication Critical patent/EP2820658A1/de
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/02—Coils wound on non-magnetic supports, e.g. formers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/06—Coil winding
    • H01F41/08—Winding conductors onto closed formers or cores, e.g. threading conductors through toroidal cores
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H49/00—Apparatus or processes specially adapted to the manufacture of relays or parts thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/44—Magnetic coils or windings
    • H01H2050/446—Details of the insulating support of the coil, e.g. spool, bobbin, former

Definitions

  • the present invention relates to an electromagnetic actuator of the differential relay type, and relates to the actuator itself and a method of mounting such an apparatus.
  • the actuator of the invention is a high sensitivity device, used in particular in the field of differential protection, when it is considered independently of the mains voltage.
  • the actuators or differential relays used in industry or the tertiary sector are of different types in order to be able to meet the standards in force (differential products of type A, AC, G, S, etc.). Now, they are geometrically identical, ie the parts constituting them are the same, with the exception of the coil, whose number of turns and the section of the wire are adapted to each type of relay mentioned above. . In practice, there are at least two different types of relay that serve different purposes.
  • this coil which constitutes and in fact makes it possible to vary the impedance of the relay, which is therefore different from one type of relay to another if the coils are distinct in terms of the number of turns and the wire section, which can go from an order of value ranging from about 1 ⁇ for low impedance relays to a more conventional value of about 40 ⁇ chosen in most calibres and triggering sensitivities, and likely to go up to at high values of the type 2000 ⁇ .
  • the operating principle which is well known, is the following: when, for example, a differential-order incident occurs in lines protected by the differential device, generating an induced current in the coil wire, the flux created on this occasion in the magnetic circuit by the coil combines with the flux generated by the permanent magnet.
  • the combination of fluxes induced by the magnet on the one hand and by the current appeared in the coil on the other hand destroys the initial mechanical equilibrium and rotates the pallet, attracted in contact with the polar end surfaces of the armature. .
  • the displacement of the pallet causes that of a mechanical member, for example a rod adapted to unlock the lock of a differential product placed near the electromagnetic actuator, so that said rod can act on a trigger.
  • the coil is the only difference between the different types of relays, so it is a component to choose while mounting the relay.
  • the assembly step of the reel intervenes in most cases quite early, that is to say that the selected reel for the product being assembled is assembled during the first phases from stocks of different reels available.
  • the device and the method of the invention make possible the unified manufacture of the entire actuator with the exception of the coil, which is added to demand, just in time, at the end of product assembly.
  • the electromagnetic actuator according to the invention which essentially comprises a magnetic circuit consisting of a fixed magnetic armature and a pallet movable against a spring and adapted to move a mechanical member of actuation, and an induction coil arranged around a branch of the armature, the assembly being inserted into a housing which exceeds the mechanical member, is characterized in that the housing comprises a through window located inside the magnetic circuit, wherein is wound the coil once the closed housing.
  • This window delimited by internal faces of the housing, is located in the vicinity of at least one outer side of said housing, the coil then being wound around a branch of the housing enclosing a portion of the magnetic armature and separating the window of the housing. proximal outer side of the housing.
  • the window is in practice entirely delimited by the housing, which is completely closed, having internal faces at the periphery of the window.
  • this window may be U-shaped opening into an outer side of the housing, and barred near said side by a bar formed by the housing and surrounding a portion of the magnetic armature.
  • the portion of the housing constituting the bar is less thick than the rest of the housing and set back from the adjacent outer side of said housing, and it is a very natural basis for winding a winding.
  • the coil may however be wound on a support comprising a sleeve of cylindrical shape surrounding the bar and at least two end flanges.
  • the coil support may consist of two parts that can be assembled in a direction parallel to the axis of the sleeve. They are fixed to each other after the bar has been placed between the two half-sleeves.
  • the coil support may consist of a single piece of elastic flexible material provided with a radial slot made in the flanges and the sleeve.
  • the slot is elastically widened for the passage of the bar, the elasticity of the material then resulting in closing the slot and to imprison the bar.
  • the periphery of at least one flange may be toothed. Said support can then be rotated by an external drive gear.
  • two adjacent flanges can equip for this purpose one of the ends of the sleeve.
  • the wire which is self-fastening to the support by wedging between the two flanges that are located very close to each other.
  • one of the ends of the sleeve may protrude from a flange, the axial dimension of the coil being substantially equal to that of the bar.
  • the two adjacent flanges of the previous solution are in practice replaced by a flange and an inner wall of the window, the fastener obeying the same principle as above because the end of the protruding sleeve is provided very short and the wall is so very close to the flask.
  • the outer face of a flange may be provided with at least one hook, preferably two hooks located symmetrically with respect to the axis of the support, and around which one (s) a first winding on a few turns leads to the same result as before: a fixing of the wire without binding mechanical operation.
  • At least one of the flanges may comprise, on its outer face, a metal pellet. This is then used for welding the end of a wire to be wound.
  • the support is rotated by means of at least one flange, actuated by a toothed wheel if it is toothed, or by a friction wheel if it is not .
  • the wire required for the coil is wound firstly to the template before being directly on the housing.
  • the winding jig is in the form of a coil holder which does not remain on the branch but simply serves to transfer the wire on said branch. Without it, it would be necessary to pass the end of the wire in the window for each tower to perform, which is industrially misguided.
  • the housing (1) is arch-shaped with an inverted U-shaped through window (2) and a bar (3) which encloses a portion of the magnetic armature (not visible).
  • the housing (1) is completely closed, which means that the inner faces defining the U are closed walls of the housing (1) as well as the outer sides.
  • the outer side upper (4) also has the single opening in the housing (1), an orifice (5) for the passage of a rod (6) of the actuator, the mechanical power allows for example to trigger the mechanical lock of a differential electrical device.
  • the coil associated with the actuator of the invention is, in this configuration, wound around the bar (3), for example after having placed a coil support (7) as appearing very schematically in figure 2 .
  • Such a coil carrier (7) consists of two parts (8, 8 '), formed in this case symmetrically in a possible configuration, assembled on either side of the bar (3).
  • the fixing of a portion (8, 8 ') to the other (8', 8) can be carried out in practice without additional elements, by simple interlocking studs or pins protruding from one of the parts (8, 8 ') and forcing into holes in the other part (8', 8).
  • the support (7) When the coil support (7) is installed, an end of the winding wire is fixed thereto, then the support (7) is rotated around the bar (3) so that the coil is created gradually, turns after turn obtained. for each complete revolution of the spool support (7). From a dimensional point of view, the length of the support (7), from one end flange (9) to the other (9 '), and the transverse dimensions of the channel delimited by the central sleeve (10) are provided such that the coil support (7) is free to rotate around the bar (3).
  • the above example should not be considered exhaustive of the invention, which instead comprises a set of variants of shapes and configurations such as the doubling of one of the flanges (9, 9 ') for fixing one end of the winding wire, the production of a support (7) in one piece provided with a radial slot in a visible configuration in figure 2 if the dashed portions (11) were solid extensions of the support (7) according to the first version, unsymmetrical portions (8, 8 ') etc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Electromagnets (AREA)

Claims (15)

  1. Elektromagnetischer Aktuator, der einen magnetischen Kreis umfasst, der aus Folgendem besteht:
    - ein stationärer Magnetanker, der mindestens eine Poloberfläche aufweist,
    - ein beweglicher Magnetanker, der gegen eine Feder beweglich und geeignet ist, um ein mechanisches Betätigungselement (6) zu bewegen,
    - und ein Permanentmagnet zur Polarisierung des magnetischen Kreises, der eine dauerhafte magnetische Anziehkraft des beweglichen Magnetankers zu der Poloberfläche des Ankers schafft,
    und eine Induktionsspule, die um einen Schenkel des Ankers angeordnet ist, wobei die Baugruppe in einem Gehäuse (1) angeordnet ist, von dem das mechanische Betätigungselement (6) vorsteht, dadurch gekennzeichnet, dass das Gehäuse (1) ein durchgehendes Fenster (2) aufweist, das sich im Inneren des magnetischen Kreises befindet, in dem die Spule aufgewickelt ist, wenn das Gehäuse (1) geschlossen ist.
  2. Elektromagnetischer Aktuator nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass das Fenster (2), das von Innenseiten des Gehäuses (1) abgegrenzt ist, in der Nähe mindestens einer Außenseite des Gehäuses (1) liegt, wobei die Spule um einen Schenkel (3) des Gehäuses (1), der einen Abschnitt des Magnetankers umchließt und das Fenster (2) von der proximalen Außenseite des Gehäuses (1) trennt, aufgewickelt ist.
  3. Elektromagnetischer Aktuator nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass das Fenster (2) in U-Form ist, die in eine Außenseite des Gehäuses (1) mündet und in der Nähe der Außenseite durch einen Stab (3), der durch das Gehäuse (1) gebildet ist und einen Abschnitt des Magnetankers umgibt, verriegelt ist.
  4. Elektromagnetischer Aktuator nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Spule auf einem Träger (7) aufgewickelt ist, der eine Hülse (10) in zylindrischer Form, die die Stange (3) umgibt, und mindestens zwei Endplatten (9, 9') umfasst.
  5. Elektromagnetischer Aktuator nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der Spulenträger (7) aus zwei Teilen (8, 8') besteht, die in eine Richtung mit parallelem Verlauf zu der Achse der Hülse (10) zusammenfügbar sind.
  6. Elektromagnetischer Aktuator nach Anspruch 4, dadurch gekennzeichnet, dass der Spulenträger (7) aus einem einzigen Teil aus elastischem flexiblen Werkstoff besteht, der einen radialen Schlitz aufweist, der in den Flanschen (9, 9') und der Hülse (10) eingebracht ist.
  7. Elektromagnetischer Aktuator nach einem der Ansprüche 5 und 6, dadurch gekennzeichnet, dass die Peripherie mindestens eines Flanschs (9, 9') verzahnt ist.
  8. Elektromagnetischer Aktuator nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, dass die zwei benachbarten Flansche eines der Enden der Hülse (10) bilden.
  9. Elektromagnetischer Aktuator nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, dass eines der Enden der Hülse (10) von einem Flansch (9, 9') vorsteht, wobei das axiale Maß der Spule im Wesentlichen gleich dem des Stabs (3) ist.
  10. Elektromagnetischer Aktuator nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, dass die Außenseite eines Flanschs (9, 9') mit mindestens einem Haken versehen ist.
  11. Elektromagnetischer Aktuator nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, dass mindestens einer der Flansche (9, 9') auf seiner Außenseite ein Metallplättchen umfasst.
  12. Verfahren zum Herstellen eines elektromagnetischen Aktuators nach einem der vorhergehenden Ansprüche, gekennzeichnet durch die folgenden Schritte:
    - Zusammenbau des stationären Magnetankers, des beweglichen Magnetankers, der Feder und des mechanischen Betätigungselements (6) in dem Inneren des Gehäuses,
    - Schließen des Gehäuses (1),
    - Aufrollen der Spule durch das Fenster des Gehäuses (1).
  13. Verfahren zum Herstellen eines elektromagnetischen Aktuators nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass:
    - nach dem Schließen des Gehäuses (1) ein Spulenträger (7) um einen der Schenkel (3) des Gehäuses (1), der das Fenster (2) und eine Außenseite des Gehäuses (1) trennt, angebracht wird,
    - ein Leiter an dem Träger (7) befestigt wird, und
    - der Träger (7) in Drehung versetzt wird, um das Aufrollen auszuführen.
  14. Verfahren zum Herstellen eines elektromagnetischen Aktuators nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der Träger (7) mittels mindestens eines Flanschs (9, 9'), der, falls er verzahnt ist, durch ein Zahnrad angetrieben wird, oder durch ein Reibrad angetrieben wird.
  15. Verfahren zum Herstellen eines elektromagnetischen Aktuators nach Anspruch 12, dadurch gekennzeichnet, dass
    - nach dem Schließen des Gehäuses (1) eine Wickelschablone um einen Schenkel (3) des Gehäuses (1), der das Fenster (2) und eine Außenseite des Gehäuses (1) trennt, angebracht wird,
    - ein Leiter an der Wickelschablone befestigt wird,
    - die Wickelschablone in Drehung versetzt wird, um die Leiterlänge, die für die Spule erforderlich ist, aufzurollen, wonach
    - der Leiter gleichzeitig von der Wickelschablone abgerollt und um den Schenkel (3) des Gehäuses (1), der das Fenster (2) und die proximale Außenseite des Gehäuses (1) trennt, aufgerollt wird,
    - die Wickelschablone von dem Schenkel (3) abgenommen wird.
EP13712870.8A 2012-02-29 2013-02-28 Elektromagnetischer aktuator mit einer äusseren spule Active EP2820658B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1251863A FR2987491B1 (fr) 2012-02-29 2012-02-29 Actionneur electromagnetique a bobinage externe
PCT/FR2013/050415 WO2013128127A1 (fr) 2012-02-29 2013-02-28 Actionneur electromagnetique a bobinage externe

Publications (2)

Publication Number Publication Date
EP2820658A1 EP2820658A1 (de) 2015-01-07
EP2820658B1 true EP2820658B1 (de) 2016-04-27

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Application Number Title Priority Date Filing Date
EP13712870.8A Active EP2820658B1 (de) 2012-02-29 2013-02-28 Elektromagnetischer aktuator mit einer äusseren spule

Country Status (9)

Country Link
EP (1) EP2820658B1 (de)
CN (1) CN104246922B (de)
AU (1) AU2013224792B2 (de)
ES (1) ES2583931T3 (de)
FR (1) FR2987491B1 (de)
IN (1) IN2014MN01890A (de)
PL (1) PL2820658T3 (de)
PT (1) PT2820658T (de)
WO (1) WO2013128127A1 (de)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1266062A (fr) * 1960-07-22 1961-07-07 Procédé pour former les bobines sur des noyaux de fer
DE1916637A1 (de) * 1969-04-01 1970-10-08 Herbert Ruff Verfahren zum Bewickeln von geschlossenen Kernen
DE3216181A1 (de) * 1982-04-30 1983-11-03 Brown, Boveri & Cie Ag, 6800 Mannheim Fehlerstormausloeser mit einer gewickelten spule, verfahren zum bewickeln der spule und vorrichtung zur durchfuehrung des verfahrens
DE8524828U1 (de) * 1985-08-30 1987-07-09 Brown, Boveri & Cie Ag, 6800 Mannheim Fehlerstromauslöser
AT414183B (de) * 1994-06-08 2006-10-15 Tyco Electronics Austria Gmbh Bistabile schaltvorrichtung
DE102004047738A1 (de) * 2004-09-30 2006-05-04 Siemens Ag Auslöserelaisvorrichtung für ein Schutzschaltgerät

Also Published As

Publication number Publication date
FR2987491A1 (fr) 2013-08-30
AU2013224792B2 (en) 2016-04-07
WO2013128127A1 (fr) 2013-09-06
IN2014MN01890A (de) 2015-07-10
CN104246922B (zh) 2016-12-07
ES2583931T3 (es) 2016-09-22
PT2820658T (pt) 2016-07-18
EP2820658A1 (de) 2015-01-07
PL2820658T3 (pl) 2016-10-31
CN104246922A (zh) 2014-12-24
FR2987491B1 (fr) 2022-02-25
AU2013224792A1 (en) 2014-10-16

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