EP0104649B1 - Electrical inductance coil - Google Patents

Electrical inductance coil Download PDF

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Publication number
EP0104649B1
EP0104649B1 EP83109630A EP83109630A EP0104649B1 EP 0104649 B1 EP0104649 B1 EP 0104649B1 EP 83109630 A EP83109630 A EP 83109630A EP 83109630 A EP83109630 A EP 83109630A EP 0104649 B1 EP0104649 B1 EP 0104649B1
Authority
EP
European Patent Office
Prior art keywords
coil
coil body
angled
core
projections
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
EP83109630A
Other languages
German (de)
French (fr)
Other versions
EP0104649A2 (en
EP0104649A3 (en
Inventor
Marc Moura
Johannes H. Tobben
Ernst Schmotz
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.)
TDK Electronics AG
Original Assignee
EUROP COMPOSANTS ELECTRON
Siemens AG
Compagnie Europeenne de Composants Electroniques LCC CICE
Thomson CSF SA
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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 EUROP COMPOSANTS ELECTRON, Siemens AG, Compagnie Europeenne de Composants Electroniques LCC CICE, Thomson CSF SA, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical EUROP COMPOSANTS ELECTRON
Priority to AT83109630T priority Critical patent/ATE24064T1/en
Publication of EP0104649A2 publication Critical patent/EP0104649A2/en
Publication of EP0104649A3 publication Critical patent/EP0104649A3/en
Application granted granted Critical
Publication of EP0104649B1 publication Critical patent/EP0104649B1/en
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
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/04—Fixed inductances of the signal type  with magnetic core
    • H01F17/041—Means for preventing rotation or displacement of the core

Definitions

  • the invention relates to an electrical coil which is suitable for use in printed circuit boards, with a coil body with coil body flanges arranged on the coil body ends with soldering lugs, and with magnetizable E-core halves pushed or plugged onto the coil body.
  • an electrical coil consisting of a coil body with end flanges, with core parts pushed onto the coil body and with a U-shaped retaining bracket which is pushed onto one core part and engages behind the other core part with lugs formed on its leg ends .
  • the transformer shown there has two coil formers with L-shaped holding parts molded onto the coil form flanges. Core parts with their legs are inserted into the interior of the coil formers, the core parts being secured in position by rail-shaped clamps which bear against the central webs of the core parts and engage behind the L-shaped holding parts with resilient leg ends.
  • the object of the invention is to provide an electrical coil of the type mentioned at the outset, which can also be easily and automatically assembled, ensuring the exact alignment of the cores with respect to one another and to the coil former. to provide simple mounting, pressure being exerted essentially only on the abutting outer legs of the e-cores, and an undesirable air gap between the facing end faces of the outer legs is largely avoided.
  • the invention provides for an electrical coil according to the preamble of claim that against each E-core half an angled leaf spring rests only against the areas adjacent to the outer legs of the E-core halves of the central webs of the E-core halves and that the angled ends of the leaf springs and both bobbin flanges are formed with projections or perforations which snap into one another in the assembled state of the leaf springs, the E-core half being pressed against one another.
  • the spool body flanges can optionally be provided with projections and the leaf springs with openings or vice versa.
  • the arrangement of the projections or - if this is expedient - the openings on the coil former flange should advantageously take place on surfaces of the coil former flanges which are at least approximately parallel to the angled ends of the leaf springs. Provided that such inclined surfaces are missing, it is advisable to integrally form projections on the bobbin flanges, which lie in a common plane with the bobbin flanges.
  • the coil former 1 has integrally molded coil former flanges 2 with solder tab strips 6 on the front ends of the winding former, which are supplemented to form rectangular frames 3 and are equipped with electrical connecting pins 7.
  • projections 15 are integrally formed on the narrow sides of these frames and are turned outwards.
  • the central slugs 9 of the E core halves 8, consisting of ferrite dip into the hollow cylindrical interior of the winding former of the coil former 1 and penetrate the openings 4 in the frame 3 with their outer legs 10.
  • the leaf springs 13 lie only against the areas of the surfaces 12 of the E-core halves 8 which are adjacent to the outer legs 10, so that i.w. only the outer legs 10 of the E core halves are pushed against each other.
  • the openings 16 formed in the angled ends 14 of the leaf springs 13 snap into the projections 15 and thus ensure a secure hold of the leaf springs and consequently also a positionally secured arrangement of the E core halves 8.
  • the projections 15 can also be integrally formed on the end edges of the possibly rectangular end flanges 2.

Landscapes

  • Power Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Burglar Alarm Systems (AREA)
  • Non-Metallic Protective Coatings For Printed Circuits (AREA)
  • Threshing Machine Elements (AREA)
  • Electroluminescent Light Sources (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Glass Compositions (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Manufacturing Of Printed Wiring (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Magnetic Treatment Devices (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Coils Of Transformers For General Uses (AREA)

Abstract

Electric coil including a coil form having means at respective ends thereof for carrying respective soldering lugs, respective magnetizable cores disposed on the coil form at the respective ends thereof, and springs formed with angled-off ends, the springs respectively engaging the magnetizable cores at the respective ends of the coil form, the carrying means and said angled-off ends of the springs, respectively, being formed with respective laterally extending projections and recesses snappable over the projections so as to urge the cores towards one another.

Description

Die Erfindung betrifft eine elektrische Spule die zum Einsatz in gedruckte Leiterplatten geeignet ist, mit einem Spulenkörper mit an den Spulenkörperenden angeordneten Spulenkörperflanschen mit Lötfahnen und mit auf den Spulenkörper aufgeschobenen oder aufgesteckten magnetisierbaren E-Kernhälften.The invention relates to an electrical coil which is suitable for use in printed circuit boards, with a coil body with coil body flanges arranged on the coil body ends with soldering lugs, and with magnetizable E-core halves pushed or plugged onto the coil body.

Durch die DE-A2944583 ist eine elektrische Spule, bestehend aus einem Spulenkörper mit Stirnflanschen, mit auf den Spulenkörper aufgeschobenen Kernteilen und mit einem U-förmigen Haltebügel bekannt, der auf das eine Kernteil aufgeschoben wird und mit an seinen Schenkelenden angeformten Nasen das andere Kernteil hintergreift.From DE-A2944583 an electrical coil is known, consisting of a coil body with end flanges, with core parts pushed onto the coil body and with a U-shaped retaining bracket which is pushed onto one core part and engages behind the other core part with lugs formed on its leg ends .

Eine hinsichtlich ihrer Halterung ähnliche Anordnung ist in « Patent Abstracts of Japan », Band 4 Nr. 162 (E-33) (644), 12. November 1980, S. 56 E33 und JP-A 55110 010 beschrieben. Der dort gezeigte Übertrager besitzt zwei Spulenkörper mit an den Spulenkörperflanschen angeformten L-förmigen Halteteilen. In das Innere der Spulenkörper sind Kernteile mit ihren Schenkeln eingefügt, wobei die Kernteile durch schienenförmige Klammern lagegesichert sind, die gegen die Mittelstege der Kernteile anliegen und mit federnden Schenkelenden die L-förmigen Halteteile hintergreifen.An arrangement similar in terms of its mounting is described in "Patent Abstracts of Japan", Volume 4 No. 162 (E-33) (644), November 12, 1980, p. 56 E33 and JP-A 55110 010. The transformer shown there has two coil formers with L-shaped holding parts molded onto the coil form flanges. Core parts with their legs are inserted into the interior of the coil formers, the core parts being secured in position by rail-shaped clamps which bear against the central webs of the core parts and engage behind the L-shaped holding parts with resilient leg ends.

Der Erfindung liegt die Aufgabe zugrunde, für eine elektrische Spule der eingangs genannten Art eine ggf. auch automatisch mühelos montierbare, die exakte Ausrichtung der Kerne zueinander und zum Spulenkörper sichernde. einfache Halterung zu schaffen, wobei im wesentlichen nur auf die aufeinander stoßenden Außenschenkel der E-Kerne Druck ausgeübt und damit ein unerwünschter Luftspalt zwischen den einander zugekehrten Stirnflächen der Außenschenkel weitgehend vermieden wird.The object of the invention is to provide an electrical coil of the type mentioned at the outset, which can also be easily and automatically assembled, ensuring the exact alignment of the cores with respect to one another and to the coil former. to provide simple mounting, pressure being exerted essentially only on the abutting outer legs of the e-cores, and an undesirable air gap between the facing end faces of the outer legs is largely avoided.

Zur Lösung diese Aufgabe sieht die Erfindung bei einer elektrischen Spule gemäß Oberbegriff des Patentanspruches vor, daß gegen jede E-Kernhälfte eine an ihren Enden abgewinkelte Blattfeder nur gegen die zu den Außenschenkeln der E-Kernhälften benachbarten Bereiche der Mittelstege der E-Kernhälften anliegt und daß die abgewinkelten Enden der Blattfedern und beide Spulenkörperflansche mit Vorsprüngen bzw. Durchbrechungen ausgebildet sind, die im montierten Zustand der Blattfedern ineinander rasten, wobei die E-Kernhälfte gegeneinander gedrängt werden.To achieve this object, the invention provides for an electrical coil according to the preamble of claim that against each E-core half an angled leaf spring rests only against the areas adjacent to the outer legs of the E-core halves of the central webs of the E-core halves and that the angled ends of the leaf springs and both bobbin flanges are formed with projections or perforations which snap into one another in the assembled state of the leaf springs, the E-core half being pressed against one another.

Wahlweise können dabei die Spulkörperflansche mit Vorsprüngen und die Blattfedern mit Durchbrechungen oder umgekehrt ausgestattet sein. Die Anordnung der Vorsprünge oder - falls dies zweckmäßig ist - der Durchbrechungen am Spulenkörperflansch sollte vorteilhafterweise an Flächen der Spulenkörperflansche erfolgen, die zu den abgewinkelten Enden der Blattfedern wenigstens angenähert parallel sind. Vorausgesetzt, es fehlen derartige Schrägflächen, so empfiehlt sich die einstückige Anformung von Vorsprüngen an die Spulenkörperflansche, die in einer gemeinsamen Ebene mit den Spulenkörperflanschen liegen.The spool body flanges can optionally be provided with projections and the leaf springs with openings or vice versa. The arrangement of the projections or - if this is expedient - the openings on the coil former flange should advantageously take place on surfaces of the coil former flanges which are at least approximately parallel to the angled ends of the leaf springs. Provided that such inclined surfaces are missing, it is advisable to integrally form projections on the bobbin flanges, which lie in a common plane with the bobbin flanges.

Die Erfindung wird nachstehend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert, das eine elektrische Spulenhälfte in auseinandergezogener und teilweise gebrochener Ansicht zeigt, wobei zur besseren Veranschaulichung die Wicklung weggelassen ist.The invention is explained in more detail below with reference to an embodiment shown in the drawing, which shows an electrical coil half in an exploded and partially broken view, the winding being omitted for better illustration.

Der Spulenkörper 1 besitzt an die Stirnenden des Wickelkörpers einstückig angeformte Spulenkörperflansche 2 mit Lötfahnenleisten 6, die zu rechteckförmigen Rahmen 3 ergäntzt und mit elektrischen Anschlußstiften 7 bestückt sind. Im gezeigten Ausführungsbeispiel sind an die Schmalseiten dieser Rahmen Vorsprünge 15 einstückig angeformt, die nach außen gekehrt sind.The coil former 1 has integrally molded coil former flanges 2 with solder tab strips 6 on the front ends of the winding former, which are supplemented to form rectangular frames 3 and are equipped with electrical connecting pins 7. In the exemplary embodiment shown, projections 15 are integrally formed on the narrow sides of these frames and are turned outwards.

Im montierten Zustand der elektrischen Spule tauchen die Mittelbutzen 9 der E-Kernhälften 8. bestehend aus Ferrit, in das hohlzylindrische Innere des Wickelkörpers des Spulenkörpers 1 ein und durchdringen mit ihren Außenschenkeln 10 die Durchbrechungen 4 im Rahmen 3.In the assembled state of the electrical coil, the central slugs 9 of the E core halves 8, consisting of ferrite, dip into the hollow cylindrical interior of the winding former of the coil former 1 and penetrate the openings 4 in the frame 3 with their outer legs 10.

Die Blattfedern 13 liegen dabei nur gegen die zu den Außenschenkeln 10 benachbarten Bereiche der Flächen 12 der E-Kernhälften 8 an, so daß i.w. nur die Außenschenkel 10 der E-Kernhälften gegeneinander gedrängt werden. Die in den abgewinkelten Enden 14 der Blattfedern 13 ausgebildeten Durchbrechungen 16 rasten in die Vorsprünge 15 ein und gewährleisten so einen sicheren Halt der Blattfedern und folglich auch eine lagegesicherte Anordnung der E-Kernhälften 8.The leaf springs 13 lie only against the areas of the surfaces 12 of the E-core halves 8 which are adjacent to the outer legs 10, so that i.w. only the outer legs 10 of the E core halves are pushed against each other. The openings 16 formed in the angled ends 14 of the leaf springs 13 snap into the projections 15 and thus ensure a secure hold of the leaf springs and consequently also a positionally secured arrangement of the E core halves 8.

Vorausgesetzt es fehlt ein Rahmen 3, so können die Vorsprünge 15 auch an die Stirnkanten der ggf. auch rechteckförmigen Stirnflansche 2 einstückig angeformt sein.Provided that a frame 3 is missing, the projections 15 can also be integrally formed on the end edges of the possibly rectangular end flanges 2.

Claims (1)

  1. An electrical inductance coil which is suitable for use in printed circuit boards, comprising a coil body having coil body flanges which are arranged at the ends of the coil body and have soldering lugs, and magnetizable E-core halves which are slipped onto or mounted on the coil body, characterised in that a leaf spring (13) which is angled at its ends (14) abuts against each E-core half (8) only against the regions (12) of the central crosspieces of the E-core halves (8), which are adjacent to the outer flanks (10) of the E-core halves (8) ; and that the angled ends (14) of the leaf springs and both coil body flanges are provided with projections (15) and openings (16) respectively which engage into one another, whereby the E-core halves are forced against one another.
EP83109630A 1982-09-27 1983-09-27 Electrical inductance coil Expired EP0104649B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83109630T ATE24064T1 (en) 1982-09-27 1983-09-27 ELECTRIC COIL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3235655 1982-09-27
DE19823235655 DE3235655A1 (en) 1982-09-27 1982-09-27 ELECTRIC COIL

Publications (3)

Publication Number Publication Date
EP0104649A2 EP0104649A2 (en) 1984-04-04
EP0104649A3 EP0104649A3 (en) 1984-05-02
EP0104649B1 true EP0104649B1 (en) 1986-12-03

Family

ID=6174222

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83109630A Expired EP0104649B1 (en) 1982-09-27 1983-09-27 Electrical inductance coil

Country Status (9)

Country Link
US (1) US4565988A (en)
EP (1) EP0104649B1 (en)
JP (1) JPS59132110A (en)
AT (1) ATE24064T1 (en)
DE (2) DE3235655A1 (en)
DK (1) DK159222C (en)
ES (1) ES283173Y (en)
FI (1) FI77740C (en)
PT (1) PT77390B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8401185A (en) * 1984-04-13 1985-11-01 Philips Nv TRANSFORMER WITH COAXIAL COILS.
JPH043467Y2 (en) * 1985-04-09 1992-02-04
DE3628290A1 (en) * 1986-08-20 1988-02-25 Siemens Ag Coil former for electrical coils
EP0477423B1 (en) * 1990-09-28 1995-11-22 Siemens Aktiengesellschaft Frame joining system
EP0594031B1 (en) * 1992-10-22 1997-06-04 SIEMENS MATSUSHITA COMPONENTS GmbH & CO. KG Electric inductance element
DE29519428U1 (en) * 1995-12-07 1996-04-04 Siemens AG, 80333 München Retaining bracket for a ferrite core
DE102013200696A1 (en) * 2013-01-17 2014-07-17 Würth Elektronik eiSos Gmbh & Co. KG inductance component
USD766190S1 (en) * 2013-09-26 2016-09-13 Omron Corporation Relay socket
DE102018218042A1 (en) * 2018-10-22 2020-04-23 Würth Elektronik eiSos Gmbh & Co. KG Core for inductive component and inductive component

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3471815A (en) * 1968-01-04 1969-10-07 Bell Telephone Labor Inc Temperature compensating inductor and circuit
US4075590A (en) * 1977-02-22 1978-02-21 Stephen Foldes Bobbin construction for electrical coils
GB2035706B (en) * 1978-11-09 1983-05-05 Tdk Electronics Co Ltd Inductance element
JPS55110010A (en) * 1979-02-19 1980-08-25 Matsushita Electric Ind Co Ltd Current transformer
JPS56104416A (en) * 1980-01-24 1981-08-20 Nippon Ferrite Ltd Inductance element

Also Published As

Publication number Publication date
FI833444A0 (en) 1983-09-26
EP0104649A2 (en) 1984-04-04
EP0104649A3 (en) 1984-05-02
DK439183D0 (en) 1983-09-26
ATE24064T1 (en) 1986-12-15
DE3368144D1 (en) 1987-01-15
DK439183A (en) 1984-03-28
FI77740B (en) 1988-12-30
ES283173U (en) 1985-05-16
JPS59132110A (en) 1984-07-30
FI77740C (en) 1989-04-10
PT77390B (en) 1986-02-13
US4565988A (en) 1986-01-21
FI833444A (en) 1984-03-28
ES283173Y (en) 1986-01-01
DK159222B (en) 1990-09-17
DK159222C (en) 1991-03-11
PT77390A (en) 1983-10-01
DE3235655A1 (en) 1984-03-29

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