EP0081842B1 - Drossel oder Transformator - Google Patents

Drossel oder Transformator Download PDF

Info

Publication number
EP0081842B1
EP0081842B1 EP19820111580 EP82111580A EP0081842B1 EP 0081842 B1 EP0081842 B1 EP 0081842B1 EP 19820111580 EP19820111580 EP 19820111580 EP 82111580 A EP82111580 A EP 82111580A EP 0081842 B1 EP0081842 B1 EP 0081842B1
Authority
EP
European Patent Office
Prior art keywords
insulating material
choke
ribs
shaped
transformer according
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
Application number
EP19820111580
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0081842A2 (de
EP0081842A3 (en
Inventor
Robert Ing. Grad. Tschuk
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.)
MAY AND CHRISTE GmbH TRANSFORMATORENWERKE
Original Assignee
MAY AND CHRISTE GmbH TRANSFORMATORENWERKE
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 MAY AND CHRISTE GmbH TRANSFORMATORENWERKE filed Critical MAY AND CHRISTE GmbH TRANSFORMATORENWERKE
Publication of EP0081842A2 publication Critical patent/EP0081842A2/de
Publication of EP0081842A3 publication Critical patent/EP0081842A3/de
Application granted granted Critical
Publication of EP0081842B1 publication Critical patent/EP0081842B1/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
    • H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/266—Fastening or mounting the core on casing or support
    • 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
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
    • H01F27/326—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures specifically adapted for discharge lamp ballasts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/08—High-leakage transformers or inductances
    • H01F38/10—Ballasts, e.g. for discharge lamps

Definitions

  • the invention relates to a choke or transformer in a jacket design, in particular for use as a ballast for gas discharge lamps, with a core package layered in the longitudinal direction of the choke or transformer, which sits on a mounting plate, with a self-supporting coil which is placed on the core and insulated from it , whose winding overhangs protrude from the core package on both end faces and which are covered there in a contact-safe manner in each case by an insulating material part, which has an attachment that engages behind the winding overhangs from above, in cooperation with the mounting plate, the attachment protruding at least above the height of the coil into the space between the coil and core package .
  • Such a choke is known for example from DE-A-2244158.
  • the touch-proof covering of the winding overhangs takes place there by means of the insulating material parts placed on the winding overhangs in the form of insulating material housings, which cover the winding overhangs of the coil by means of a rear wall, an end wall and three walls on the circumference and are accordingly constructed in a material-consuming and complicated manner.
  • a choke coil is also known, which sits on a mounting plate and is covered overall by a box-shaped housing part.
  • the object of the invention is to create a choke or a transformer of the type described in the introduction, which can be produced in automated production with the least possible expenditure of core, copper and insulating material, in particular with regard to the insulating material parts, and is easy to assemble.
  • each Isollerstoffelles consists of two L-shaped ribs attached to the upper edge of the insulating material part, the outside distance of which is approximated to the inside diameter of the winding head, that the ribs connecting one their free ends Have cross bar and that a U-shaped housing part is placed on the core package overhanging the winding overhang on both end faces, overlapping the upper edge of the insulating material parts arranged on both end faces.
  • the U-shaped housing part made of sheet metal which protrudes over both end faces of the core package Due to the U-shaped housing part made of sheet metal which protrudes over both end faces of the core package, the heat dissipation from the choke is considerably improved, as a result of which the layer height of the core package and accordingly the copper requirement of the coil are reduced.
  • the U-shaped housing part covers the winding heads in a touch-proof manner on the circumference, while the plate-shaped insulating part made of plastic ensures the frontal cover.
  • the insulating material parts can be easily manufactured with minimal material expenditure, without their assembly friendliness being impaired in the automatic production.
  • the combination of the U-shaped housing part made of sheet metal with the plate-shaped insulating material parts made of plastic also results in a significantly improved mechanical strength of the protective device against accidental contact, since the risk of damage under mechanical stress is significantly reduced compared to an insulating material housing surrounding the winding head on all sides.
  • the plate-shaped insulating part made of plastic expediently has a recess on its upper edge, into which a corresponding projection of the U-shaped housing part engages. This allows a simple fixation between the housing part and the insulating parts to be achieved.
  • the ends of the ribs expediently protrude beyond the coil into the end stop with the I sheets and This makes it easier to put the E core package with the coil on the core onto the I package.
  • the ends of the ribs are advantageously bevelled to facilitate the automatic insertion of the ribs between the winding heads and the core package.
  • An additional transverse web can be provided between the ribs in order to improve the stability of the position of the ribs relative to one another.
  • a U-shaped rib is advantageously provided on the edges of the inside of the insulating part, which is overlapped by the U-shaped housing part. This contributes to the additional fixing of the plate-shaped insulating material part in relation to the U-shaped housing part and to ensuring the touch-proof cover even when the insulating material part is very thin.
  • the insulating material part In order to be able to further reduce the thickness of the insulating material part, it can be designed with undulating stiffeners.
  • FIGs 1 and 2 a preferred embodiment of the throttle according to the invention is shown in perspective and in an exploded view.
  • the throttle is designed in a jacket construction and with a core package layered in the throttle longitudinal direction with EI sheet metal cuts.
  • the I-plates 1 sit on a mounting plate 2.
  • the E-plates 3 are placed on the I-plates 1.
  • the core of the core package 4 carries a cantilevered coil, insulated from the core, the winding heads 5 of which protrude from the end of the core package 4.
  • a U-shaped housing part 6 is placed on the core package 4 and projects over the core package on both sides by approximately the protrusions of the winding heads 5.
  • plastic insulating parts 7 are arranged, which cover the end windings 5 together with the mounting plate 2 and the U-shaped housing part 6 so that they are safe to touch.
  • the insulating parts 7 are expediently injection molded parts. They each consist of an end wall 8 and two L-shaped ribs 9 attached to the upper edge of the end wall 8.
  • the ribs 9 protrude at least above the height of the coil into the space between the winding head 5 and the core package 4.
  • the outer spacing of the ribs 9 is about equal to the core width.
  • the ribs 9 have a transverse web 10 connecting their free ends, which serves in particular for the stability of the ribs 9.
  • a clamp 11 is further placed for connecting the ends of the coil.
  • the end wall 8 has on its upper side a recess 12 into which a corresponding projection 13 of the U-shaped housing part 6 engages. It can also be seen that the ends of the ribs 9 project beyond the coil into the end stop with the I-plates 1. This makes it easier to fix the core in relation to the I-plates during assembly. The ends of the ribs 9 are chamfered, which facilitates the insertion of the ribs between the core package 4 and the winding head 5. Finally, a U-shaped rib 14 is provided on the inside of the end wall 8, which is overlapped by the U-shaped housing part 6. The U-shaped housing 6 is expediently connected to the mounting plate 2 by spot welding.
  • FIGS. 3 to 7 show two embodiments of the insulating material parts 7.
  • a wavy stiffened end wall 8 is provided, while the insulating material part according to FIGS. 5 to 7 has a smooth plastic wall 8.
  • Fig. 6 also shows that an additional transverse web 15 can be provided between the ribs 9 for reasons of stability. Otherwise, the insulating material part 7 shown in FIGS. 5 to 7 essentially corresponds to the insulating material part shown in FIGS. 1 and 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Insulating Of Coils (AREA)
EP19820111580 1981-12-16 1982-12-14 Drossel oder Transformator Expired EP0081842B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3149853 1981-12-16
DE19813149853 DE3149853C1 (de) 1981-12-16 1981-12-16 Drossel oder Transformator

Publications (3)

Publication Number Publication Date
EP0081842A2 EP0081842A2 (de) 1983-06-22
EP0081842A3 EP0081842A3 (en) 1983-07-20
EP0081842B1 true EP0081842B1 (de) 1986-03-26

Family

ID=6148907

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820111580 Expired EP0081842B1 (de) 1981-12-16 1982-12-14 Drossel oder Transformator

Country Status (3)

Country Link
EP (1) EP0081842B1 (enExample)
DE (1) DE3149853C1 (enExample)
GR (1) GR82296B (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2544543B1 (fr) * 1983-04-15 1985-06-14 Thomson Csf Transformateur vhf de puissance
CH683214A5 (de) * 1992-03-26 1994-01-31 Knobel Lichttech Gegen Berührung isolierter Kleinleistungstransformator.

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH391876A (de) * 1961-11-09 1965-05-15 Leuenberger H Eisenkernanordnung in Drosselspule oder Transformator
FR1407092A (fr) * 1964-04-06 1965-07-30 Bobinage Pour L Ind Et La Radi Procédé d'assemblage de circuits magnétiques pour transformateurs, sels ou autresappareils électriques statiques ou tournants
YU33139B (en) * 1970-02-02 1976-04-30 Elektrokovina Tovarna Elektrok Dusilaka z brezvijacno sponko
NL157738B (nl) * 1970-02-18 1978-08-15 Philips Nv Transformator.
DE7136866U (de) * 1971-09-29 1972-06-22 Plathner E Gmbh Gehaeuse fuer transformatoren drosseln od.dgl.
DE2244158C3 (de) * 1972-09-08 1979-09-06 Fa. Hermann Schwabe, 7067 Urbach Drossel oder Transformator, insbesondere als Vorschaltgerät für Gasentladungslampen
ATA909272A (de) * 1972-10-24 1975-10-15 Zumtobel Kg Transformator oder drosselspule
DD148401A1 (de) * 1980-01-07 1981-05-20 Eberhard Wolf Wickelkopfisolation

Also Published As

Publication number Publication date
EP0081842A2 (de) 1983-06-22
EP0081842A3 (en) 1983-07-20
GR82296B (enExample) 1984-12-13
DE3149853C1 (de) 1983-04-07

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