EP1050890B1 - Elektromagnet mit einem Blechpaket - Google Patents

Elektromagnet mit einem Blechpaket Download PDF

Info

Publication number
EP1050890B1
EP1050890B1 EP20000107464 EP00107464A EP1050890B1 EP 1050890 B1 EP1050890 B1 EP 1050890B1 EP 20000107464 EP20000107464 EP 20000107464 EP 00107464 A EP00107464 A EP 00107464A EP 1050890 B1 EP1050890 B1 EP 1050890B1
Authority
EP
European Patent Office
Prior art keywords
laminations
laminated core
housing
undercuts
projections
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
EP20000107464
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1050890A3 (de
EP1050890A2 (de
Inventor
Ute Lohrey
Clemens Luchner
Dierk Schimmelpfennig
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1050890A2 publication Critical patent/EP1050890A2/de
Publication of EP1050890A3 publication Critical patent/EP1050890A3/de
Application granted granted Critical
Publication of EP1050890B1 publication Critical patent/EP1050890B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/02—Cores, Yokes, or armatures made from sheets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/081—Magnetic constructions

Definitions

  • the invention relates to an electromagnet according to the preamble of claim 1.
  • Such an electromagnet is from the DE 41 32 839 A1 known.
  • the relevant state of the art further includes the DE 30 46 072 A .
  • EP 0 921 536 A as well as the DE 196 02 401 A
  • the technical environment is also on the DE 196 46 937 A1 .
  • DE 36 37 411 A1 as well as the DE 37 04 579 A1 referenced, the latter two relate to the structure of laminated cores for electromagnets.
  • Laminations for electric motors, transformers or generally for electromagnets which are composed of stacked and by stamped packetization, ie by common partial deformation, form-fitting interconnected laminations, are common prior art.
  • electromagnetic actuators especially for the operation of internal combustion engine gas exchange valves
  • this conventional connection technology can not meet.
  • the laminations can be pinned to each other, however, thereby the desired magnetic field structure is disturbed or by the pinning the laminations can be disadvantageously short-circuited.
  • a similar problem arises in the the rest of the type of arrangement of the laminated core in a housing receiving the electromagnet.
  • a material for the housing i. as a housing casting material, a light metal alloy (such as AlSi) are used, then by the laminations then surrounding and this here cohesive casting the laminations advantageously not (or at most minimal) connected in an electrically conductive manner with each other, as this casting material
  • a light metal alloy such as AlSi
  • the laminations advantageously not (or at most minimal) connected in an electrically conductive manner with each other, as this casting material
  • oxide skin which acts as an electrical insulation layer. Adverse effects on the magnetic field structure are therefore not to be feared due to this connection technology.
  • the individual laminations are held in an optimal manner both in relation to each other and in their entirety as a laminated core in the electromagnet housing receiving when appropriate undercuts are provided in the laminated core, which are filled when pouring the same into the housing with the housing casting material.
  • the laminations if necessary, in cooperation with other laminations undercuts, the laminations otherwise otherwise should be at least partially connected to each other, so for example.
  • the known stamped package In this, the stacked laminations are not only punched together in the manufacturing process of the laminated core, but also partially deformed together partially so that an effective at least in a certain direction form-locking connection is formed.
  • undercuts As far as the formation of the mentioned undercuts is concerned, they can be designed in many different ways. It is essential that by filling these undercuts with the housing casting material, the laminated core is sufficiently retained both in itself and connected to the housing. In other words, thus prevents the undercuts filling, solidified casting material alone or in conjunction with another, but relatively simple connection technology (such as. The stamped package) any relative movement of the individual laminations to each other and any movement of the laminated core in the housing.
  • Various possible embodiments of the said undercuts are shown in the accompanying schematic diagrams, which are explained in more detail as preferred embodiments of the invention later.
  • the laminated core is provided prior to pouring with a compound layer which forms a cohesive bond when poured into the housing with the housing casting material.
  • This is then not only a pure form-fitting composite, but an additional cohesive bond between the laminated core and the housing before, this additional composite over the surface of the laminated core considered can be provided partially or in total, and the case always strengthened or supported the fixation of the sheet metal pact in the housing.
  • the laminated core can, for example, by thermal spraying, by electroplating, by brushing or the like. be coated with said compound layer, which is melted in the subsequent casting process.
  • suitable metals or fluxes can be used which promote the formation of an intermetallic phase between the housing casting material (in particular a light metal alloy) and the laminated core material (preferably pure iron).
  • connection layer is only useful if the emergence of electrical losses in the laminated core is negligible, because finally takes place with the cohesive composite simultaneously forming an intermetallic and thus electrically conductive phase between the housing casting material and the laminated core material. If such electrical losses are to be avoided, then an electrical insulating layer should be provided between the laminations and the connecting layer.
  • the laminated core before coating with the bonding layer with a suitable electrical insulation layer for example.
  • Magnesium oxide coated to konen use all the advantages of the positive connection without an electrical circuit between the laminations is brought about.
  • the insulating layer is first applied by PVD coating (powder vapor coating), for example, and then the preferably metallic connecting layer.
  • PVD coating powder vapor coating
  • the preferably metallic connecting layer can otherwise take place by immersing the laminated cores in a liquid Al alloy, for example until the intermetallic compound forms.
  • the laminated core package is then poured into the housing, whereby the cohesive connection is generated.
  • the reference numeral 1 denotes a laminated core of an electromagnet, which may be installed, for example, in an electromagnetic actuator; Alternatively, this laminated core 1 but also be part of a transformer or an electric motor.
  • the laminated core 1 therefore carries a coil (magnetic coil), ie a winding of electrically conductive wire, which here for the sake of simplicity (and since it has no relation to the invention) is not shown.
  • a coil magnetic coil
  • ie a winding of electrically conductive wire
  • the laminated core 1 is composed of a plurality of stacked laminations 3, as the FIGS. 1b, 3b, 4b, 5b and 6 demonstrate. These laminations 3 can as usual by punching together be connected, ie by such a Stanzuntechnik the laminations 3 are basically held together to form the laminated core 1, but this cohesion can withstand only relatively low forces.
  • the essential cohesion between the laminations 3 of the laminated core 1 is produced in that this laminated core 1 is poured into a housing 4 accommodating the electromagnet (and thus the laminated core 1 with said coil).
  • a fraction of this housing 4 is (only) in the FIGS. 1a, 1b shown.
  • the housing 4 is cuboid and takes between his (in the FIGS. 1a , 1b overhead) 4a and the (four) side walls 4b, 4c, the laminated core 1 on.
  • Undercuts 5 are for this purpose filled with the housing casting material, so that at the same time through these undercuts 5, the individual laminations 3 are held together to form the laminated core 1.
  • the laminated core 1 is cast into the housing 4.
  • This housing 4 is thus produced in a casting process, preferably using a light metal alloy as a casting material.
  • the laminated core 1 is then securely fixed in the housing 4 or on its base plate 4a (as well as on the side walls 4b, 4c), but at the same time the laminations 3 are fixed relative to each other fixed position.
  • the undercuts 5 are formed as introduced into the edge region of the laminations 3 breakthrough sectors 5a.
  • a first undercut 5 (or breakthrough sector 5a) faces the base plate 4a of the housing 4 and in each case a further undercut 5 the two opposite side walls 4b, against which all the laminations 3 with their side edges.
  • the thus formed undercuts 5 are therefore designated because they are substantially similar to a sector of, for example, circular breakthrough, but the angle of the selected sector is so large that actually creates an undercut. Only the base plate 4 a facing undercut 5 (or breakthrough sector 5 a) should therefore prevent the entire laminated core 1 or each sheet 3 of the same from it due to its filling with the casting material of the housing, from the base plate 4 a (here down to move away).
  • such an undercut 5 in the form of the breakthrough sector 5a may certainly also be shaped differently than shown, for example, similar to the later explained further projection 5b of the embodiment according to 2b , but in a mirrored in the surface of the lamination 3 form.
  • the undercuts 5 are formed by protruding from the edge region of the laminations 3 projections 5b.
  • Each of these projections 5b projects through the pouring of the laminated core 1 into the housing 4 quasi in the base plate 4a and thus anchored the corresponding metal plate 3 and the entire laminated core 1 safely in the housing 4.
  • these projections 5b dovetail-shaped, wherein the through The undercut 5 marked with reference to the reference numeral 5 becomes particularly clear, ie in this area marked by the arrow, the housing casting material penetrates and fixes each one during its solidification Sheet metal plate 3 on the base plate 4a. Due to the relatively large area or the large circumference of this undercut 5, a single such projection 5b per sheet metal lamination 3 is sufficient, but of course such projections 5b may also be provided on the side walls 4b facing edges of the laminations 3.
  • the undercuts 5 are formed by protruding from the edge region of the laminations 3 projections 5b, which here, however, have no undercut forming outer contour, but each provided with an opening 5c.
  • these (for example, circular) openings 5c penetrates the housing casting material when pouring the laminated core 1 in the casting process in the molding housing 4, so that these openings 5c form said undercuts 5 and this again each lamination 3 optimally fixed to the housing 4 becomes.
  • the breakthroughs 5c (or the projections 5b), which are once again shaped identically and arranged identically in each of the laminations 3 of the laminated core 1, protrude into the mutually opposite side walls 4b of the housing 4 (cf. 1a ).
  • the embodiment Fig.3b - (Here, the laminated core 1 is shown in perspective exploded view) - however, the apertures 5c and the projections 5b in each of the laminations 3 of the laminated core 1 Although the same shape, but with respect to the respective adjacent laminations 3 on the same edge, while but arranged offset. This results in a particularly stable hold.
  • each sheet metal lamination 3 projects two projections 5b each provided with an opening 5c into the base plate 4a of the housing 4 (cf. 1a ).
  • the embodiment according to Figure 6 is slightly similar to the one after 5 b ,
  • the projections 5b are formed corrugated parallel to each other and form between each an undercut 5 which is filled with the casting material of the housing 4, ie the projections 5b are after pouring the laminated core 1 into the housing 4 each quasi like an anchor preferably in the Base plate 4a.
EP20000107464 1999-05-03 2000-04-06 Elektromagnet mit einem Blechpaket Expired - Lifetime EP1050890B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19920094 1999-05-03
DE1999120094 DE19920094A1 (de) 1999-05-03 1999-05-03 Elektromagnet mit einem Blechpaket

Publications (3)

Publication Number Publication Date
EP1050890A2 EP1050890A2 (de) 2000-11-08
EP1050890A3 EP1050890A3 (de) 2001-09-12
EP1050890B1 true EP1050890B1 (de) 2008-12-24

Family

ID=7906674

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000107464 Expired - Lifetime EP1050890B1 (de) 1999-05-03 2000-04-06 Elektromagnet mit einem Blechpaket

Country Status (2)

Country Link
EP (1) EP1050890B1 (pt-PT)
DE (2) DE19920094A1 (pt-PT)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE435496T1 (de) * 2001-03-02 2009-07-15 Valeo Sys Controle Moteur Sas Elektromagnetischer aktuator
DE10134708A1 (de) * 2001-07-21 2003-02-06 Heinz Leiber Elektromagnet
EP4089882A1 (en) 2021-05-14 2022-11-16 GE Energy Power Conversion Technology Ltd. Compaction plate, associated magnetic mass, stator, rotor, rotating electric machine and driving system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1188524A (fr) * 1956-07-28 1959-09-23 Procédé de fabrication de paquets de tôles pour noyaux magnétiques, destinés notamment à des appareils de commande électriques
DE1946885A1 (de) * 1968-09-24 1970-04-02 Elektrokovina Tovarna Elektrok Drosselspule oder Transformator
DE2309727C3 (de) * 1973-02-27 1979-05-03 Fa. Hermann Schwabe, 7067 Urbach Verfahren zur Herstellung von insbesondere als Vorschaltgerät für Gasentladungslampen zu verwendende Drosseln oder Transformatoren
DD153505A3 (de) * 1980-03-07 1982-01-13 Rolf Sobadky Magnetbetaetigte brennstoffeinspritzvorrichtung
DE3203196A1 (de) * 1982-01-30 1983-08-04 Messer Griesheim Gmbh, 6000 Frankfurt Verfahren zum verbinden eines aus mehreren lagen bestehenden eisenkerns
US5155461A (en) * 1991-02-08 1992-10-13 Diesel Technology Corporation Solenoid stator assembly for electronically actuated fuel injectors and method of manufacturing same
US5176946A (en) * 1991-05-10 1993-01-05 Allen-Bradley Company, Inc. Laminated contactor core with blind hole
DE19645098C2 (de) * 1996-11-01 2000-09-21 Vossloh Schwabe Gmbh Drossel und Verfahren zu deren Herstellung

Also Published As

Publication number Publication date
DE50015495D1 (de) 2009-02-05
DE19920094A1 (de) 2000-11-09
EP1050890A3 (de) 2001-09-12
EP1050890A2 (de) 2000-11-08

Similar Documents

Publication Publication Date Title
DE3690625C2 (de) Verfahren zum Herstellen einer Baueinheit aus einem magnetischen Kern aus amorphem Metall und einer Spulenstruktur für einen elektrischen Transformator und elektrischer Transformator
EP2210329B1 (de) Rotor oder stator für eine elektrodynamische maschine
DE102010004887A1 (de) Spulenkörper zur Montage an einem Magnetkern, Magnetkern für Reluktanzresolver und Verfahren zur Herstellung
EP0691030B1 (de) Polarisiertes elektromagnetisches relais
DE102005041676A1 (de) Blechpaketanordnung für eine elektrische Maschine sowie Rotor und Permanentmagnetmaschine
EP0746007B1 (de) Polarisiertes elektromagnetisches Relais
DE19909227B4 (de) Zweiphasen-Motor, nämlich Schrittmotor oder Synchronmotor mit zwei weichmagnetischen Statorteilen
DE102011084425A1 (de) Rotorblechpaket, Rotor und Verfahren zur Herstellung eines Rotorblechpakets
EP1050890B1 (de) Elektromagnet mit einem Blechpaket
WO1996019814A1 (de) Elektrisches bauteil, insbesondere spule, vorzugsweise für smd-montagetechnik
DE10202476B4 (de) Elektromagnetische Spule mit Rechteckform
EP1087497B1 (de) Stator für einen als Innenläufermotor ausgebildeten Elektromotor
DE8208150U1 (de) Elektrische wicklung mit einem eisenkern aus geschichteten blechlamellen
WO2001006530A1 (de) Bewegbarer kontakt mit niedrigem elektrischen widerstand
DE102004062340B4 (de) Elektromagnetischer Antrieb mit Flußleitstücken
DE3338208A1 (de) Elektromagnetisches relais und verfahren zu dessen herstellung
DE3506354C1 (de) Elektromagnetisches Relais mit Isolierkappe und Verfahren zur Herstellung der Isolierkappe
DE3225830C2 (de) Elektromagnetisches Drehankerrelais
DE2711480A1 (de) Elektromagnetisches miniaturrelais
DE102004013995B4 (de) Statorpaket für eine Magnetschwebebahn
EP1163686B1 (de) Elektromagnet
DE2926506C2 (de) Verfahren zur Herstellung eines gehäuselosen Elektromotors mit einer einzigen Schutzleiteranschluß-Klemme
EP1070198A1 (de) Elektromagnetischer aktuator mit geblechtem anker
DE102008020617B4 (de) Verfahren zur Herstellung eines Spulensystems und eines elektromagnetischen Relais
DE2741573A1 (de) Wechselstromwecker fuer fernsprechgeraete

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

Kind code of ref document: A2

Designated state(s): DE FR GB

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20010927

AKX Designation fees paid

Free format text: DE FR GB

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 50015495

Country of ref document: DE

Date of ref document: 20090205

Kind code of ref document: P

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20090925

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20150430

Year of fee payment: 16

Ref country code: DE

Payment date: 20150411

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20150430

Year of fee payment: 16

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50015495

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20160406

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20161230

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161101

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160502

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160406