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 SPACEInfo
- 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
Links
- 238000000034 method Methods 0.000 title claims description 3
- 238000005304 joining Methods 0.000 claims description 3
- 241000446313 Lamella Species 0.000 claims 1
- 230000003313 weakening effect Effects 0.000 claims 1
- 230000004907 flux Effects 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 3
- 238000007373 indentation Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
- H01F3/14—Constrictions; 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
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)
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)
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)
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 |
-
1980
- 1980-06-30 AT AT80400979T patent/ATE9749T1/en not_active IP Right Cessation
- 1980-06-30 EP EP80400979A patent/EP0042898B1/en not_active Expired
- 1980-06-30 DE DE8080400979T patent/DE3069353D1/en not_active Expired
-
1981
- 1981-06-03 DK DK244581A patent/DK244581A/en not_active Application Discontinuation
- 1981-06-26 FI FI812017A patent/FI75446C/en not_active IP Right Cessation
- 1981-06-26 IE IE1423/81A patent/IE51834B1/en unknown
- 1981-06-29 PT PT73282A patent/PT73282B/en unknown
- 1981-06-29 NO NO812219A patent/NO812219L/en unknown
- 1981-06-30 ES ES1981272474U patent/ES272474Y/en not_active Expired
- 1981-06-30 GR GR65383A patent/GR74360B/en unknown
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 |
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