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WO1997005632A1 - Transformateurs montes sur bobine - Google Patents

Transformateurs montes sur bobine Download PDF

Info

Publication number
WO1997005632A1
WO1997005632A1 PCT/US1996/012595 US9612595W WO9705632A1 WO 1997005632 A1 WO1997005632 A1 WO 1997005632A1 US 9612595 W US9612595 W US 9612595W WO 9705632 A1 WO9705632 A1 WO 9705632A1
Authority
WO
WIPO (PCT)
Prior art keywords
core
bobbin
winding
flange
boss
Prior art date
Application number
PCT/US1996/012595
Other languages
English (en)
Inventor
Robert P. Boesel
Original Assignee
Northeast Ventures, Inc.
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 Northeast Ventures, Inc. filed Critical Northeast Ventures, Inc.
Priority to AU66863/96A priority Critical patent/AU6686396A/en
Publication of WO1997005632A1 publication Critical patent/WO1997005632A1/fr

Links

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
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/306—Fastening or mounting coils or windings on core, casing or other 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
    • H01F27/24—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
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets

Definitions

  • the present invention relates to a transformer, a transformer assembly method, a power supply and a power supply construction method.
  • Power supplies typically include a transformer.
  • D.C. power supplies usually include a large value capacitor, and a collection of diodes forming a bridge in addition to the transformer.
  • the ubiquitous wall transformer power supply is an illustrative example of such a D.C. power supply.
  • the transformer typically performs a voltage conversion while the diode bridge converts the AC current to a DC current.
  • Transformer efficiency is an important attribute of many power supply designs. An efficient transformer uses less material for a given power rating and operates without generating as much heat as a transformer having a less efficient design. There exists a need to develop a transformer design and assembly technique which permits the formation ofhigh performance, yet inexpensive and efficient transformers and power supplies.
  • the transformer ofthe present invention is assembled from stamped laminations comprising E-cores and I-cores or U-cores and I-cores which are assembled on a dual aperture bobbin.
  • the first bobbin aperture accepts E-cores or U-cores while a second aperture accepts I-cores. While other lamination configurations are possible, this description will focus on the E-core and I-core combination.
  • E-core lamina and I-core lamina make up the magnetic structure ofthe transformer.
  • the gap between the E-core lamina and I-core lamina is filled with an adhesive which contains magnetic particles.
  • the bobbin In addition to core reception apertures, the bobbin includes a plurality of flanges. Three flanges may be used to make spaces for a primary winding and a secondary winding. The primary and secondary windings form the electrical portion ofthe transformer. Many flange and winding configurations are possible within the scope of the invention.
  • a component mounting flange may also be attached to the bobbin or may be formed integrally with the bobbin. This flange includes mounting bosses. These mounting bosses permit component leads to be positioned next to the boss and then wrapped and soldered into position. DESCRIPTION OF THE DRAWINGS
  • FIG. 1 shows an elevation view ofthe transformer bobbin juxtaposed with E- core and I-core members
  • FIG. 2 shows an elevation, view of a power supply assembly
  • FIG. 3 shows an elevation view of a power supply assembly
  • FIG. 4 shows an elevation view of a component mounting boss
  • FIG. 5 shows a plan view of a component mounting boss.
  • FIG. 1 shows the dual aperture bobbin 10 in isolation juxtaposed near an E-core 26 and an I-core 32.
  • the exemplary dual aperture bobbin 10 includes a first flange 12 and second flange bobbin 14 and a third flange 16. These flanges define a primary winding zone 18 and a secondary winding zone 20.
  • the bobbin 10 includes an E-core reception aperture 22 to accept the center leg 24 of an E-core stack 26.
  • An integrally molded cross-channel 28 is provided forming an I-core reception aperture 30 to accept an assembled I-core 32 stack.
  • the magnetic transformer assembly is created.
  • the E-core lamina and I-core lamina abut at a junction.
  • An adhesive can be supplied at the junction to hold the lamina together as discussed with reference to FIG. 2.
  • a component mounting flange 34 may be attached or integrally formed with the bobbin 10.
  • This component mounting flange 34 includes numerous apertures best seen in connection with FIG. 1.
  • FIG. 2 a completed power supply assembly 36 is shown.
  • a primary winding 48 and a secondary winding 50 have been wound onto the bobbin 10.
  • the exterior leg 40 of E-core 20 shown in contact with the I-core stack 32 at a junction 38.
  • a simple adhesive may be used to secure the E-core lamina and I-core lamina at the junction
  • the particulate reduces the effective gap between the I-core and E-core lamina and the adhesive insulates against the flow of eddy currents, both of which are desirable. It is preferred to excite a primary or secondary winding and to slide the I-core in a reciprocating motion across the leg ends ofthe E-core during the assembly operation, because it appears that the magnetic field generated by the winding excitation and the physical motion of reciprocation aligns and moves the particulate into the gap improving the magnetic distribution of the particulate material.
  • the component mount flange 34 is an optional or ancillary feature. However it is important for the production of inexpensive power supplies.
  • the lead reception apertures are filled with the leads of a capacitor 42, as well as leads for a set of four diodes typified by diode 44, forming a bridge.
  • the secondary winding 22 can be routed to the various bosses located on the component flange 34 to provide a suitable connection to the components.
  • one of two power supply prongs 46 which may also be fitted into a boss within the bobbin 10. The prongs may be coupled to the primary winding 48 ofthe transformer to supply power to the device.
  • FIG. 3 shows the power supply assembly 36 in an alternate view. The junction
  • FIG. 4 shows a partial elevation ofthe component mounting technique.
  • the component typified by diode 44 has a lead 56 which is routed through a component aperture 58 in the mounting flange 34.
  • the mounting boss 54 intersects with the component aperture 58 such that the component lead 56 lies in a small recess formed in the boss 54. This recess stabilizes the component lead 56 and permits the wire 52 to wrap the lead 56 into conformity against the boss 54.
  • FIG. 5 shows this arrangement in plan view where a component lead typified by lead 56 is passed through aperture 5 in the component mounting flange 34 and is in contact with a boss typified by boss 54.
  • the boss 54 is seen to have multiple wire wraps ofthe wire 52 against the boss 54.
  • the relative elasticity and thermal coefficient of expansion ofthe wire and plastic materials insure that the contact between the lead and the wire is sufficient to maintain electrical contact, although soldering this connection renders it permanent.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulating Of Coils (AREA)

Abstract

Transformateur, dont les noyaux, présentant des formes à la fois de E et de I, de U et de I ou d'autres formes, sont montés sur une bobine et mis en place par la bobine. Une collerette de bobine est agrandie, de manière à constituer une surface de montage d'élément, y compris une pluralité de protubérances d'enroulement, ce qui permet d'utiliser des techniques automatiques de montage du transformateur et des éléments d'alimentation avec un nombre d'opérations limité au minimum. On utilise de l'adhésif activé magnétiquement pour effectuer le montage et pour améliorer l'efficacité de l'ensemble.
PCT/US1996/012595 1995-08-02 1996-07-31 Transformateurs montes sur bobine WO1997005632A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU66863/96A AU6686396A (en) 1995-08-02 1996-07-31 Bobbin assembled transformers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US51014695A 1995-08-02 1995-08-02
US08/510,146 1995-08-02

Publications (1)

Publication Number Publication Date
WO1997005632A1 true WO1997005632A1 (fr) 1997-02-13

Family

ID=24029559

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/012595 WO1997005632A1 (fr) 1995-08-02 1996-07-31 Transformateurs montes sur bobine

Country Status (2)

Country Link
AU (1) AU6686396A (fr)
WO (1) WO1997005632A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19900081C1 (de) * 1999-01-05 2000-10-26 Rudolf Michael Gmbh Spulenkoer Spulenkörper
JP2002208520A (ja) * 2001-01-10 2002-07-26 Tamura Seisakusho Co Ltd 小型電源トランス
US6525637B1 (en) 1999-09-29 2003-02-25 Koninklijke Philips Electronics N.V. Transformer
WO2009032377A1 (fr) * 2007-09-07 2009-03-12 Vishay Dale Electronics, Inc. Bobines d'inductance haute puissance utilisant une base magnétique
DE102018202669B3 (de) 2018-02-22 2019-07-04 SUMIDA Components & Modules GmbH Induktives Bauelement und Verfahren zur Herstellung eines induktiven Bauelements

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1613777A1 (de) * 1968-01-31 1971-04-22 Blum Eisen & Metallind Spulenkoerper mit einer oder mehreren Drahtwicklungen und eingeschobenem Eisenkern
GB2086664A (en) * 1980-10-15 1982-05-12 Toko Inc Small-size transformer
GB2216729A (en) * 1988-03-08 1989-10-11 Kijima Co Ltd A compact transformer
DE9106759U1 (de) * 1991-06-03 1991-08-14 Franz Steger Transformatorenbau GmbH, 8458 Sulzbach-Rosenberg Spulenkörper, insbesondere für Transformatoren

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1613777A1 (de) * 1968-01-31 1971-04-22 Blum Eisen & Metallind Spulenkoerper mit einer oder mehreren Drahtwicklungen und eingeschobenem Eisenkern
GB2086664A (en) * 1980-10-15 1982-05-12 Toko Inc Small-size transformer
GB2216729A (en) * 1988-03-08 1989-10-11 Kijima Co Ltd A compact transformer
DE9106759U1 (de) * 1991-06-03 1991-08-14 Franz Steger Transformatorenbau GmbH, 8458 Sulzbach-Rosenberg Spulenkörper, insbesondere für Transformatoren

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19900081C1 (de) * 1999-01-05 2000-10-26 Rudolf Michael Gmbh Spulenkoer Spulenkörper
US6525637B1 (en) 1999-09-29 2003-02-25 Koninklijke Philips Electronics N.V. Transformer
JP2002208520A (ja) * 2001-01-10 2002-07-26 Tamura Seisakusho Co Ltd 小型電源トランス
WO2009032377A1 (fr) * 2007-09-07 2009-03-12 Vishay Dale Electronics, Inc. Bobines d'inductance haute puissance utilisant une base magnétique
US8004379B2 (en) 2007-09-07 2011-08-23 Vishay Dale Electronics, Inc. High powered inductors using a magnetic bias
EP2549492A1 (fr) * 2007-09-07 2013-01-23 Vishay Dale Electronics, Inc. Bobines d'induction haute puissance utilisant une base magnétique
DE102018202669B3 (de) 2018-02-22 2019-07-04 SUMIDA Components & Modules GmbH Induktives Bauelement und Verfahren zur Herstellung eines induktiven Bauelements
US11587716B2 (en) 2018-02-22 2023-02-21 SUMIDA Components & Modules GmbH Inductive component and method of manufacturing an inductive component

Also Published As

Publication number Publication date
AU6686396A (en) 1997-02-26

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