EP0042898A1 - Geblechter Magnetkern mit Luftspalt und Verfahren zum Justieren des Luftspalts - Google Patents

Geblechter Magnetkern mit Luftspalt und Verfahren zum Justieren des Luftspalts Download PDF

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Publication number
EP0042898A1
EP0042898A1 EP80400979A EP80400979A EP0042898A1 EP 0042898 A1 EP0042898 A1 EP 0042898A1 EP 80400979 A EP80400979 A EP 80400979A EP 80400979 A EP80400979 A EP 80400979A EP 0042898 A1 EP0042898 A1 EP 0042898A1
Authority
EP
European Patent Office
Prior art keywords
air gap
magnetic circuit
obtuse angle
end bars
shaped part
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.)
Granted
Application number
EP80400979A
Other languages
English (en)
French (fr)
Other versions
EP0042898B1 (de
Inventor
Gilles Desombre
Marc Dujardin
Gérard Haroux
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.)
Sa Clarel
Original Assignee
Sa Clarel
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 Sa Clarel filed Critical Sa Clarel
Priority to AT80400979T priority Critical patent/ATE9749T1/de
Priority to EP80400979A priority patent/EP0042898B1/de
Priority to DE8080400979T priority patent/DE3069353D1/de
Priority to DK244581A priority patent/DK244581A/da
Priority to IE1423/81A priority patent/IE51834B1/en
Priority to FI812017A priority patent/FI75446C/fi
Priority to PT73282A priority patent/PT73282B/pt
Priority to NO812219A priority patent/NO812219L/no
Priority to GR65383A priority patent/GR74360B/el
Priority to ES1981272474U priority patent/ES272474Y/es
Publication of EP0042898A1 publication Critical patent/EP0042898A1/de
Application granted granted Critical
Publication of EP0042898B1 publication Critical patent/EP0042898B1/de
Expired legal-status Critical Current

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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

Definitions

  • the present invention relates to a laminated magnetic circuit with fixed gap, composed of an E-part and an I-part and in which the length of the end bars of the E-part determines the thickness of the air gap in front of the middle bar of this part in E.
  • the object of the invention is such a laminated circuit suitable for example for a ballast for fluorescent lamps having high guarantees of maintenance of its reactance value during the service life and offering facilities for adjusting the reactance value during its manufacture.
  • the magnetic circuit according to the invention is characterized in that the side of the I-part resting on the end bars of the E-part forms with the sides at the end of the I-part an obtuse angle and in this that the two end bars of the part in E each have an extension disposed one of the other at the distance of the length of the part in I to embrace the part in I by marrying said obtuse angle.
  • Figure 1 of the drawing is a section through a magnetic circuit according to the invention, carried out between two lamellae of the laminating of the parts at E and at I.
  • Figure 2 is a view of a sheet to be cut.
  • a part at E comprising two end arms 2 and a median arm 3 shorter than the thickness of the air gap is covered with a part at 1 4.
  • the side of part 4 resting on the bars 2 form with the sides at the end of the part 4 an obtuse angle ⁇ .
  • the two bars 2 each have an extension 5.
  • the two extensions 5 are arranged one from the other at the distance of the length of the part 4 to embrace the part 4 by marrying the obtuse angle ⁇ . Thanks to this arrangement, the part 4 is kept correctly centered on the part in E.
  • the dimensions are chosen so that the span is ensured between the ends of the part 4 in I and the parts of the bars 2.
  • the obtuse angle ⁇ is for example from 91 to 120 °. It is chosen relatively close to a right angle, in order to prevent part 4 from detaching from the part at E.
  • part 4 is kept centered with respect to the part at E, it is easy to adjust the mean value of the air gap or what amounts to the same value of the reactance if it is the magnetic circuit of a ballast choke for example. To do this, it suffices to deform by punctual depressions dosed and limited in one or more places one or more lamellas of the lamination of the part 4 in I so that they approach the bar 3.
  • the fact of proceeding by punctual depressions, equidistant or not, allows not to introduce a distant material, plastically deformable in the air gap, such as aluminum., as is done for example if the entire part in I is the subject of a depression.
  • impregnation channels are thus reserved along not only the air gap and the coil, but also holes 6 which provide a channel d 'impregnation at a particularly critical location likely to be a source of noise, because it is opposite the air gap.
  • Other impregnation channels are provided between the ends of the arms 2 and the housing where all pressure in the direction of part 4 is avoided in order not to compromise the main contact between the parts in ⁇ and in I.
  • the invention also makes it possible to obtain greater precision of the air gap from the start.
  • the faces defining the air gap are cut by a punching (hatched surface 9) much more precise than a shearing which takes place along line 10.

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)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Paper (AREA)
  • Control Of Electric Motors In General (AREA)
  • Magnetic Heads (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Electron Tubes For Measurement (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Magnetic Treatment 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)
  • Supporting Of Heads In Record-Carrier Devices (AREA)
  • Magnetically Actuated Valves (AREA)
EP80400979A 1980-06-30 1980-06-30 Geblechter Magnetkern mit Luftspalt und Verfahren zum Justieren des Luftspalts Expired EP0042898B1 (de)

Priority Applications (10)

Application Number Priority Date Filing Date Title
AT80400979T ATE9749T1 (de) 1980-06-30 1980-06-30 Geblechter magnetkern mit luftspalt und verfahren zum justieren des luftspalts.
EP80400979A EP0042898B1 (de) 1980-06-30 1980-06-30 Geblechter Magnetkern mit Luftspalt und Verfahren zum Justieren des Luftspalts
DE8080400979T DE3069353D1 (en) 1980-06-30 1980-06-30 Laminated magnetic circuit with air gap, and method of adjusting the air gap
DK244581A DK244581A (da) 1980-06-30 1981-06-03 Lamelleret magnetisk kreds med fast spalte og fremgangsmaade ved justering af spaltens middelstoerrelse
IE1423/81A IE51834B1 (en) 1980-06-30 1981-06-26 A laminated magnetic circuit with fixed air gap and procedure for adjustment thereof
FI812017A FI75446C (fi) 1980-06-30 1981-06-26 Magnetisk skivkrets med fast luftgap och regleringsfoerfarande foer luftgapet.
PT73282A PT73282B (fr) 1980-06-30 1981-06-29 Circuit magnetique feuillete a entrefer fixe et procede d'ajustage de l'entrefer moyen de celui-ci
NO812219A NO812219L (no) 1980-06-30 1981-06-29 Laminert magnetisk krets med fast luftspalte og fremgangsmaate ved innstilling av luftspalten
GR65383A GR74360B (el) 1980-06-30 1981-06-30 Φυλλωδες μαγνητικον κυκλωμα, μετα σταθερου διακενου αερος και μεθοδος προσαρμογης του μεσου διακενου αερος αυτου
ES1981272474U ES272474Y (es) 1980-06-30 1981-06-30 Circuito magnetico de chapas, de entrehierro fijo.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP80400979A EP0042898B1 (de) 1980-06-30 1980-06-30 Geblechter Magnetkern mit Luftspalt und Verfahren zum Justieren des Luftspalts

Publications (2)

Publication Number Publication Date
EP0042898A1 true EP0042898A1 (de) 1982-01-06
EP0042898B1 EP0042898B1 (de) 1984-10-03

Family

ID=8187379

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80400979A Expired EP0042898B1 (de) 1980-06-30 1980-06-30 Geblechter Magnetkern mit Luftspalt und Verfahren zum Justieren des Luftspalts

Country Status (10)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0104792A1 (de) * 1982-09-27 1984-04-04 General Motors Corporation Verfahren zur Herstellung eines Kernes für eine Zündspule
DE19645098A1 (de) * 1996-11-01 1998-05-14 Vossloh Schwabe Gmbh Drossel und Verfahren zu deren Herstellung

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR942323A (fr) * 1941-01-28 1949-02-04 Thomson Houston Comp Francaise Perfectionnements à la construction des noyaux magnétiques
FR1054551A (de) * 1954-02-11
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
FR1558102A (de) * 1967-03-20 1969-02-21
DE1638944A1 (de) * 1967-02-09 1970-05-14 Waasner B Kernblech mit zwei Blechteilen
DE1929566A1 (de) * 1968-06-27 1970-06-18 Idec Izumi Corp Transformatorkern und Verfahren zu seiner Herstellung
FR2106423A1 (de) * 1970-09-10 1972-05-05 Friedland Ltd V & E

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1054551A (de) * 1954-02-11
FR942323A (fr) * 1941-01-28 1949-02-04 Thomson Houston Comp Francaise Perfectionnements à la construction des noyaux magnétiques
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 (de) * 1967-02-09 1970-05-14 Waasner B Kernblech mit zwei Blechteilen
FR1558102A (de) * 1967-03-20 1969-02-21
DE1929566A1 (de) * 1968-06-27 1970-06-18 Idec Izumi Corp Transformatorkern und Verfahren zu seiner Herstellung
FR2106423A1 (de) * 1970-09-10 1972-05-05 Friedland Ltd V & E

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0104792A1 (de) * 1982-09-27 1984-04-04 General Motors Corporation Verfahren zur Herstellung eines Kernes für eine Zündspule
US4480377A (en) * 1982-09-27 1984-11-06 General Motors Corporation Method of making an ignition coil core
DE19645098A1 (de) * 1996-11-01 1998-05-14 Vossloh Schwabe Gmbh Drossel und Verfahren zu deren Herstellung
DE19645098C2 (de) * 1996-11-01 2000-09-21 Vossloh Schwabe Gmbh Drossel und Verfahren zu deren Herstellung

Also Published As

Publication number Publication date
ES272474Y (es) 1984-10-01
DE3069353D1 (en) 1984-11-08
NO812219L (no) 1982-01-04
FI75446B (fi) 1988-02-29
PT73282B (fr) 1982-07-01
EP0042898B1 (de) 1984-10-03
IE51834B1 (en) 1987-04-15
ATE9749T1 (de) 1984-10-15
GR74360B (el) 1984-06-27
IE811423L (en) 1981-12-30
ES272474U (es) 1984-03-01
FI75446C (fi) 1988-06-09
DK244581A (da) 1981-12-31
PT73282A (fr) 1981-07-01
FI812017L (fi) 1981-12-31

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