NO812219L - LAMINATED MAGNETIC CIRCUIT WITH FIXED AIR SPACE AND PROCEDURE WHEN SETTING THE AIR SPACE - Google Patents

LAMINATED MAGNETIC CIRCUIT WITH FIXED AIR SPACE AND PROCEDURE WHEN SETTING THE AIR SPACE

Info

Publication number
NO812219L
NO812219L NO812219A NO812219A NO812219L NO 812219 L NO812219 L NO 812219L NO 812219 A NO812219 A NO 812219A NO 812219 A NO812219 A NO 812219A NO 812219 L NO812219 L NO 812219L
Authority
NO
Norway
Prior art keywords
shaped part
magnetic circuit
air gap
air space
shaped
Prior art date
Application number
NO812219A
Other languages
Norwegian (no)
Inventor
Gilles Desombre
Marc Dujardin
Gerard Haroux
Original Assignee
Clarel Sa
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 Clarel Sa filed Critical Clarel Sa
Publication of NO812219L publication Critical patent/NO812219L/en

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/24Magnetic cores
    • H01F27/245Magnetic cores made from sheets, e.g. grain-oriented
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00Cores, Yokes, or armatures
    • H01F3/10Composite arrangements of magnetic circuits
    • H01F3/14Constrictions; Gaps, e.g. air-gaps

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Composite Materials (AREA)
  • Chemical & Material Sciences (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Paper (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Control Of Electric Motors In General (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Magnetic Heads (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Magnetically Actuated Valves (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Magnetic Treatment Devices (AREA)
  • Electron Tubes For Measurement (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Supporting Of Heads In Record-Carrier Devices (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Traffic Control Systems (AREA)

Abstract

1. Laminated magnetic circuit with air gap, comprising and E-shaped part and an I-shaped part (4), and wherein the lenght of the end bars (2) of the E part determines the depth of the air gap opposite the central bar (3) of this E part, characterized in that the side of the I part (4) which rests on the end bars (2) of the E part forms an obtuse angle (alpha) wiht the sides at the end of the part I part (4), and in that the two end bars (2) of the E part each have a prolongation (5) and these are arranged at a distance from one another corresponding to the lenght of the I part (4), so as to fit the shape of the said obtuse angle (alpha) in engaging about the I part (4).

Description

Foreliggende oppfinnelse angår en laminert magnetisk krets med fast luftspalte, bestående av et E-formet parti og. et I-formet parti og hvor lengden av endestavene i det E-formede parti bestemmer tykkelsen av luftspalten overfor den midtre stav i det E-formede parti. The present invention relates to a laminated magnetic circuit with a fixed air gap, consisting of an E-shaped part and. an I-shaped part and where the length of the end rods in the E-shaped part determines the thickness of the air gap opposite the middle rod in the E-shaped part.

Formålet med oppfinnelsen er å skaffe en slik laminert krets som passer f.eks. til en belastning for fluores-cerende lamper og med stor sikkerhet for bibehold av sin reaktansverdi under levetiden og som byr mulighetene for justering av reaktansverdien ved dens produksjon. The purpose of the invention is to provide such a laminated circuit which fits e.g. to a load for fluorescent lamps and with great certainty of maintaining its reactance value during its lifetime and which offers the possibilities of adjusting the reactance value during its production.

Den magnetiske krets ifølge oppfinnelsen er kjennetegnet ved at den side av det l-formede parti som ligger an mot endestavene i det E-formede parti, sammen med sidene- på enden av det l-formede parti danner en stump vinkel og at de to endestaver av det E-formede parti har to forlengelser anbragt fra hverandre en avstand lik lengden av det l-formede parti for å gripe det l-formede parti ved å slutte seg til den stumpe vinkel. The magnetic circuit according to the invention is characterized by the fact that the side of the l-shaped part that lies against the end rods in the E-shaped part, together with the sides at the end of the l-shaped part forms an obtuse angle and that the two end rods of the E-shaped portion have two extensions spaced apart a distance equal to the length of the l-shaped portion to grip the l-shaped portion by joining the obtuse angle.

Oppfinnelsen er i det følgende beskrevet nærmere i form av et eksempel på en utførelse og under henvisning til tegningen, hvor fig. 1 er et snitt av en magnetisk krets-ifølge oppfinnelsen anordnet mellom to lamineringslameller med E-formet og I-formet parti. Fig. 2 er et riss av en plate for tilskjæring. The invention is described in more detail in the following in the form of an example of an embodiment and with reference to the drawing, where fig. 1 is a section of a magnetic circuit according to the invention arranged between two lamination lamellae with E-shaped and I-shaped parts. Fig. 2 is a drawing of a plate for cutting.

I en kapsling 1 i og for seg kjent f.eks. fra DE-OS 1 638 339 er et E-formet parti som omfatter to endearmer In an enclosure 1 in and of itself known, e.g. from DE-OS 1 638 339 is an E-shaped part comprising two end arms

2 og en midtre arm 3 som er kortere med tykkelsen av luftspalten, dekket av et l-formet parti 4. Den side av partiet 4 som hviler mot stavene 2, danner sammen med sidene av endene av partiet 4 en stump vinkel a . De to staver 2 har hver en forlengelse 5. De to forlengelser 5 er anbragt fra hverandre en avstand som tilsvarer lengden av partiet 4 for å gripe partiet 4 ved å slutte seg til den stumpe vinkel CK . Takket være denne anordning er partiet 4 opprettholdt kor-rekt sentrert på det E-formede parti. Dimensjonene er slik valgt at anlegget er sikret mellom endene av partiet 4 med l-form og stavenes 2 partier parallelle med enden av den midtre arm og at en svak fåstkiling vil være sikret mellom partiet 4 og de skrå partier av forlengelsene 5, slik at hovedfluksen finner et tilstrekkelig passeringstverrsnitt og at spredningsfluksen på kontaktstedene mellom partiet 4 og stavene 2 vil være redusert til en meget liten verdi. Dess-uten vil således spredningsflukslinjene ikke gå gjennom kapslingen 1 og ikke forårsake støy. Den stumpe vinkelen er f.eks.'mellom 91 og 120O. Den er valgt relativt nær den rette vinkel for å unngå at partiet 4 skal løse seg fra det E-formede parti. 2 and a middle arm 3 which is shorter by the thickness of the air gap, covered by an l-shaped part 4. The side of the part 4 which rests against the rods 2 forms, together with the sides of the ends of the part 4, an obtuse angle a. The two rods 2 each have an extension 5. The two extensions 5 are spaced apart a distance corresponding to the length of the part 4 in order to grasp the part 4 by joining the obtuse angle CK. Thanks to this device, the part 4 is maintained correctly centered on the E-shaped part. The dimensions are chosen so that the plant is secured between the ends of the l-shaped part 4 and the rods' 2 parts parallel to the end of the middle arm and that a weak securing wedge will be secured between the part 4 and the inclined parts of the extensions 5, so that the main flux finds a sufficient passing cross-section and that the dispersion flux at the contact points between the part 4 and the rods 2 will be reduced to a very small value. Without it, the scattering flux lines will thus not pass through the enclosure 1 and will not cause noise. The obtuse angle is, for example, between 91 and 120°. It is chosen relatively close to the right angle in order to avoid that the part 4 should detach from the E-shaped part.

Da partiet 4 bibeholdes sentrert i forhold til det E-formede parti, er det lett å justere den midlere verdi av løpspalten eller slik at den kommer på den samme verdi for reaktansen hvis det f.eks. dreier seg om en. magnetisk krets for en induksjonsspole. For å foreta dette er det tilstrekkelig å deformere ved punktfordypninger som er tilpasset og begrenset til et eller flere punkter på en eller flere lamineringslameller i partiet 4 med l-form for at dette skal nærme seg staven 3. Fremgangsmåten med punktvise fordypnin-ger med eller uten samme avstand gjør det mulig å unngå inn-føring av avstandsmateriale, plastisk deformerbart i luftspalten som f.eks. av aluminium, slik dette f.eks. gjøres hvis hele det l-formede parti er gjenstand for en forsenkning o As the part 4 is kept centered in relation to the E-shaped part, it is easy to adjust the mean value of the running gap or so that it arrives at the same value for the reactance if, for example, revolves around one. magnetic circuit for an induction coil. In order to do this, it is sufficient to deform by point indentations that are adapted and limited to one or more points on one or more lamination lamellae in the l-shaped part 4 so that this will approach the rod 3. The method with point-by-point indentations with or without the same distance makes it possible to avoid the introduction of spacer material, plastically deformable in the air gap, such as e.g. of aluminium, as this e.g. is done if the entire l-shaped part is subject to a recess o

Far å lette disse punktformede forsenkninger kan man svekke tverrsnittet for lamellene i det l-formede parti 4 overfor staven 3, særlig ved å stanse ut huller 6. Det skal her bemerkes at disse huller 6 ikke skal tjene til sammensetningen av lamellene i partiet 4. Hvis man allikevel ønsker å benytte hullene 6 til sammensetningen av lamellene i partiet 4, må diameteren av hullene 6 være merkbart større enn diameteren av en stift som strekker seg gjennom for å tillate nøyaktig punktforsenkning av visse plater. Da juster-ingen ved forsenkning ikke gjøres på alle platene vil luftspalten bli litt uregelmessig. Man unngår ulempene ved denne uregelmessighet ved f.eks. å velge et antall punkter med samme avstand, hvor man utfører fordypningene. In order to facilitate these point-shaped recesses, the cross-section of the slats in the l-shaped section 4 opposite the rod 3 can be weakened, in particular by punching out holes 6. It should be noted here that these holes 6 should not serve for the composition of the slats in the section 4. If one nevertheless wishes to use the holes 6 for the composition of the slats in the part 4, the diameter of the holes 6 must be noticeably larger than the diameter of a pin extending through to allow accurate spot countersinking of certain plates. As the adjustment during countersinking is not done on all the plates, the air gap will be slightly irregular. The disadvantages of this irregularity are avoided by e.g. to select a number of points with the same distance, where the indentations are carried out.

Når den beskrevne laminerte magnetkrets anvendesWhen the described laminated magnetic circuit is used

i en belastning ifølge fransk patent 1 291 362, er impregner-ingskanaler reservert også langs ikke bare luftspaltén og spolen men også hullene 6 som skaffer en impregneringskanal in a load according to French patent 1 291 362, impregnation channels are also reserved along not only the air gap and the coil but also the holes 6 which provide an impregnation channel

på et særlig kritisk sted som har lett for å være kilde til støy, fordi det befinner seg overfor luftspalten. Andre im-pregneringskanaler er anordnet mellom endene av armene 2 og kapslingen hvor alt trykk i retning av partiet 4 unngås for ikke å skade hovedkontakten mellom partiene med E-form og med I-form. in a particularly critical location that is easily a source of noise, because it is located opposite the air gap. Other impregnation channels are arranged between the ends of the arms 2 and the casing where all pressure in the direction of the part 4 is avoided so as not to damage the main contact between the E-shaped and I-shaped parts.

Oppfinnelsen gjør det også mulig å få en større presisjon for luftspalten helt fra begynnelsen. Som vist på fig. 2 med risset av en plate 8 for tilskjæring, blir de flater som definerer luftspalten, skåret ved hjelp av stans-ing (skravert flate 9) mer presist enn en kapping etter linjen 10. The invention also makes it possible to obtain greater precision for the air gap right from the start. As shown in fig. 2 with the outline of a plate 8 for cutting, the surfaces that define the air gap are cut by means of punching (shaded surface 9) more precisely than a cut along the line 10.

Claims (3)

1. Laminert magnetisk krets med fast luftspalte sammensatt av en E-formet del og en I-formet del (4) og hvor lengden av endestavene (2) i det E-formede parti bestemmer tykkelsen av luftspalten overfor den midtre stav (3), karakterisert ved at den side av det l-formede parti (4) som ligger an mot endestavene (2) i det E-formede parti, sammen med sidene på enden av det I-formede parti (4) danner en stump vinkel (cx) og at de to endestaver (2) av det E-formede parti har to forlengelser (5) anbragt fra hverandre en avstand lik lengden av det I-formede parti. (4) for å gripe det I-formede parti (4) ved å slutte seg til den stumpe vinkel (ot) .1. Laminated magnetic circuit with fixed air gap composed of an E-shaped part and an I-shaped part (4) and where the length of the end rods (2) in the E-shaped part determines the thickness of the air gap opposite the middle rod (3), characterized in that the side of the l-shaped part (4) which abuts the end rods (2) in the E-shaped part, together with the sides at the end of the I-shaped part (4) forms an obtuse angle (cx) and that the two end rods (2) of the E-shaped part have two extensions (5) spaced apart a distance equal to the length of the I-shaped part. (4) to grasp the I-shaped part (4) by joining the obtuse angle (ot) . 2. Magnetkrets ifølge krav 1 , karakterisert ved at partiet (4) med l-form omfatter en svekning av sitt tverrsnitt, fortrinnsvis en boring (6) overfor den midtre stav (3) i det E-formede parti.2. Magnetic circuit according to claim 1, characterized in that the l-shaped part (4) comprises a weakening of its cross-section, preferably a bore (6) opposite the central rod (3) in the E-shaped part. 3. Fremgangsmåte for justering av den midlere luftspalte i en magnetkrets ifølge et av kravene 1 eller 2, karakterisert ved at man ved punktvise fordyp-ninger som er beregnet å begrense, på et eller flere steder, deformerer en eller flere lameller i partiet (4) med l-form for at de skal nærme seg den midtre stav (3) i det E-formede parti.3. Method for adjusting the central air gap in a magnetic circuit according to one of claims 1 or 2, characterized in that one or more lamellas in the section are deformed in point-wise recesses which are intended to be limited, in one or more places (4 ) with an L-shape so that they approach the middle rod (3) in the E-shaped part.
NO812219A 1980-06-30 1981-06-29 LAMINATED MAGNETIC CIRCUIT WITH FIXED AIR SPACE AND PROCEDURE WHEN SETTING THE AIR SPACE NO812219L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP80400979A EP0042898B1 (en) 1980-06-30 1980-06-30 Laminated magnetic circuit with air gap, and method of adjusting the air gap

Publications (1)

Publication Number Publication Date
NO812219L true NO812219L (en) 1982-01-04

Family

ID=8187379

Family Applications (1)

Application Number Title Priority Date Filing Date
NO812219A NO812219L (en) 1980-06-30 1981-06-29 LAMINATED MAGNETIC CIRCUIT WITH FIXED AIR SPACE AND PROCEDURE WHEN SETTING THE AIR SPACE

Country Status (10)

Country Link
EP (1) EP0042898B1 (en)
AT (1) ATE9749T1 (en)
DE (1) DE3069353D1 (en)
DK (1) DK244581A (en)
ES (1) ES272474Y (en)
FI (1) FI75446C (en)
GR (1) GR74360B (en)
IE (1) IE51834B1 (en)
NO (1) NO812219L (en)
PT (1) PT73282B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4480377A (en) * 1982-09-27 1984-11-06 General Motors Corporation Method of making an ignition coil core
DE19645098C2 (en) * 1996-11-01 2000-09-21 Vossloh Schwabe Gmbh Choke and process for its manufacture

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1054551A (en) * 1954-02-11
FR942323A (en) * 1941-01-28 1949-02-04 Thomson Houston Comp Francaise Improvements in the construction of magnetic cores
US3071744A (en) * 1954-12-14 1963-01-01 Advance Transformer Co Electromagnetic core construction
US3219957A (en) * 1957-12-03 1965-11-23 Advance Transformer Co Core for electromagnetic device
DE1638944A1 (en) * 1967-02-09 1970-05-14 Waasner B Core sheet with two sheet metal parts
DE1613628A1 (en) * 1967-03-20 1970-07-30 Blum Eisen & Metallind Two-part iron core, especially for transformers
DE1929566A1 (en) * 1968-06-27 1970-06-18 Idec Izumi Corp Transformer core and process for its manufacture
GB1345523A (en) * 1970-09-10 1974-01-30 Friedland Ltd V E Doggart J Sk Transformer laminations

Also Published As

Publication number Publication date
ES272474U (en) 1984-03-01
ES272474Y (en) 1984-10-01
IE811423L (en) 1981-12-30
GR74360B (en) 1984-06-27
FI75446B (en) 1988-02-29
PT73282A (en) 1981-07-01
FI812017L (en) 1981-12-31
DK244581A (en) 1981-12-31
IE51834B1 (en) 1987-04-15
EP0042898A1 (en) 1982-01-06
ATE9749T1 (en) 1984-10-15
DE3069353D1 (en) 1984-11-08
FI75446C (en) 1988-06-09
PT73282B (en) 1982-07-01
EP0042898B1 (en) 1984-10-03

Similar Documents

Publication Publication Date Title
US4530355A (en) Compression screw assembly
US4617922A (en) Compression screw assembly
US2825329A (en) Internal fixation of fractures
DE3689212T2 (en) Method and device for connecting cables with several coated optical fibers.
US4616638A (en) Compression screw assembly
US2240840A (en) Tap construction
RU2159167C2 (en) Drilling tool
GB2127927A (en) Wood screws
DE3571571D1 (en) Manufacturing method and apparatus for grooved slats
DE3676984D1 (en) SCREW-WINDED INSERT WITHOUT HANDLE.
US3172170A (en) Composite wood panel
NO812219L (en) LAMINATED MAGNETIC CIRCUIT WITH FIXED AIR SPACE AND PROCEDURE WHEN SETTING THE AIR SPACE
US2633629A (en) Method of equipping wire line drums with spacing strips
US6049985A (en) Detonating cord cutter
US2981673A (en) Nuclear fuel assembly locking joint and method
US2029514A (en) Thread cutting tool
US2390950A (en) Tap
US1853681A (en) Tip for wire cables and method of applying same
US2309886A (en) Electrode holder
KR890011639A (en) Latch Bearing Manufacturing Method and Apparatus of Loom Latch Needle
US2146788A (en) Wire-drawing die and method
US2062550A (en) Screw
GB2133062A (en) Drilling tools
US4708541A (en) Valve seat cutting tool
DE1427735A1 (en) Blade unit for machines for the production of thin material disks as well as method for the production of such blade units