EP0104649A2 - Electrical inductance coil - Google Patents

Electrical inductance coil Download PDF

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Publication number
EP0104649A2
EP0104649A2 EP83109630A EP83109630A EP0104649A2 EP 0104649 A2 EP0104649 A2 EP 0104649A2 EP 83109630 A EP83109630 A EP 83109630A EP 83109630 A EP83109630 A EP 83109630A EP 0104649 A2 EP0104649 A2 EP 0104649A2
Authority
EP
European Patent Office
Prior art keywords
coil
springs
cores
projections
angled
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
EP83109630A
Other languages
German (de)
French (fr)
Other versions
EP0104649B1 (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
Lcc-Cice - Europeenne De Composants Electroniques Cie
Siemens AG
EUROP COMPOSANTS ELECTRON
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 Lcc-Cice - Europeenne De Composants Electroniques Cie, Siemens AG, EUROP COMPOSANTS ELECTRON, Compagnie Europeenne de Composants Electroniques LCC CICE, Thomson CSF SA, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Lcc-Cice - Europeenne De Composants Electroniques Cie
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, and in particular to an electrical coil suitable for use in printed circuit boards with a coil body with at least one coil body flange with soldering lugs and with magnetizable cores, in particular ferrite cores, which are pushed or plugged onto the coil body.
  • the invention has for its object to provide for an electrical coil of the type mentioned above, a possibly also automatically effortlessly mountable, the exact alignment of the cores with respect to one another and to the coil former, simple holder which e.g. When using E-cores, pressure is exerted essentially only on the abutting outer legs of the E-cores and thus 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 core there is an angled spring at its ends, in particular leaf spring or resilient wire bracket, under the effect of which the cores are pressed against each other, and that the ends of the Springs and each bobbin flange are formed with projections or perforations which snap into one another when the springs are assembled.
  • the coil former flanges can optionally be provided with projections and the 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 that are 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 are preferably only against the areas of the surfaces 12 of the E-core halves 8 which are adjacent to the outer legs 10, so that generally only the outer legs 10 of the E-core halves are urged against one another.
  • the perforations 16 formed in the angled ends 14 of the leaf springs 13 engage in the projections 15 and thus ensure a safe hold of the leaf springs, and consequently a sheet 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.

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 und zwar insbesondere eine zum Einsatz in gedruckte Leiterplatten geeignete elektrische Spule mit einem Spulenkörper mit mindestens einem Spulenkörperflansch mit Lötfahnen und mit auf den Spulenkörper aufgeschobenen oder aufgesteckten magnetisierbaren Kernen, insbesondere Ferritkernen.The invention relates to an electrical coil, and in particular to an electrical coil suitable for use in printed circuit boards with a coil body with at least one coil body flange with soldering lugs and with magnetizable cores, in particular ferrite cores, which are pushed or plugged onto the coil body.

Der Erfindung liegt die Aufgabe zugrunde, für eine elektrische Spule der vorstehend genannten Art eine ggf. auch automatisch mühelos montierbare, die exakte Ausrichtung der Kerne zueinander und zum Spulenkörper sichernde, einfache Halterung zu schaffen, die z.B. beim Einsatz von E-Kernen bewirkt, daß 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 invention has for its object to provide for an electrical coil of the type mentioned above, a possibly also automatically effortlessly mountable, the exact alignment of the cores with respect to one another and to the coil former, simple holder which e.g. When using E-cores, pressure is exerted essentially only on the abutting outer legs of the E-cores and thus an undesirable air gap between the facing end faces of the outer legs is largely avoided.

Zur Lösung dieser Aufgabe sieht die Erfindung bei einer elektrischen Spule gemäß Oberbegriff des Patentanspruches vor, daß gegen jeden Kern eine an ihren Enden abgewinkelte Feder, insbesondere Blattfeder oder federnder Drahtbügel, anliegt, unter deren Wirkung die Kerne gegeneinander gedrängt werden, und daß die Enden der Federn und jeder Spulenkörperflansch mit Vorsprüngen bzw. Durchbrechungen ausgebildet sind, die im montierten Zustand der Federn ineinander rasten.To achieve this object, the invention provides for an electrical coil according to the preamble of claim that against each core there is an angled spring at its ends, in particular leaf spring or resilient wire bracket, under the effect of which the cores are pressed against each other, and that the ends of the Springs and each bobbin flange are formed with projections or perforations which snap into one another when the springs are assembled.

Wahlweise können dabei die Spulenkörperflansche mit Vorsprüngen und die Federn 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 coil former flanges can optionally be provided with projections and the 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 that are in a common plane with the bobbin flanges.

Die Erfindung wird nachstehend anhand eines in der Zeichnung dargestellten Ausführungsbeispieles näher erläutert, das eine elektrische Spulenhälfte in auseinandergezogener und teilweise gebrochener Ansicht zeigt, wobei zur besseren Veranschaulichung die Wicklung weggelassen ist.The invention will be described by way of example in the drawing illustrated explained in more detail, the ulenhälfte exploded and partially broken view showing an electric S p where to better illustrate the winding is omitted.

Der Spulenkörper 1 besitzt an die Stirnenden des Wickelkörpers einstückig angeformte Spulenkörperflansche 2 mit Lötfahnenleisten 6, die zu rechteckförmigen Rahmen 3 ergänzt 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. 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.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. 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 bevorzugt 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 are preferably only against the areas of the surfaces 12 of the E-core halves 8 which are adjacent to the outer legs 10, so that generally only the outer legs 10 of the E-core halves are urged against one another. The perforations 16 formed in the angled ends 14 of the leaf springs 13 engage in the projections 15 and thus ensure a safe hold of the leaf springs, and consequently a sheet 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)

Elektrische Spule, insbesondere zum Einsatz in gedruckte Leiterplatten geeignete elektrische Spule, mit einem Spulenkörper mit mindestens einem Spulenkörperflansch mit Lötfahnen und mit auf den Spulenkörper aufgeschobenen oder aufgesteckten magnetisierbaren Kernen, dadurch gekennzeichnet, daß gegen jeden Kern (8) eine an ihren Enden (14) abgewinkelte Feder (13) anliegt, unter deren Wirkung die Kerne gegeneinander gedrängt werden, und daß die Enden der Federn und jeder Spulenkörperflansch mit Vorsprüngen (15) bzw. Durchbrechungen (16) ausgebildet sind, die ineinander rasten.Electrical coil, in particular an electrical coil suitable for use in printed circuit boards, with a coil body with at least one coil body flange with soldering lugs and with magnetizable cores pushed or plugged onto the coil body, characterized in that an end (14) at each end (8) angled spring (13) is applied, under the action of which the cores are pressed against each other, and that the ends of the springs and each coil former flange are formed with projections (15) or openings (16) which snap into 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 true EP0104649A2 (en) 1984-04-04
EP0104649A3 EP0104649A3 (en) 1984-05-02
EP0104649B1 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)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3628290A1 (en) * 1986-08-20 1988-02-25 Siemens Ag Coil former for electrical coils
EP0594031A1 (en) * 1992-10-22 1994-04-27 SIEMENS MATSUSHITA COMPONENTS GmbH & CO. KG Electric inductance element
DE29519428U1 (en) * 1995-12-07 1996-04-04 Siemens Ag Retaining bracket for a ferrite core

Families Citing this family (6)

* 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
DE59009903D1 (en) * 1990-09-28 1996-01-04 Siemens Ag Frame system.
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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2944583A1 (en) * 1978-11-09 1980-05-22 Tdk Electronics Co Ltd BOBBIN WITH CORE
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

Family Cites Families (2)

* 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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2944583A1 (en) * 1978-11-09 1980-05-22 Tdk Electronics Co Ltd BOBBIN WITH CORE
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

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENTS ABSTRACTS OF JAPAN, Band 4, Nr. 162 (E-33)[644], 12. November 1980, Seite 56 E 33 & JP-A-55 110 010 (MATSUSHITA DENKI SANGYO K.K.) 25.08.1980 *
PATENTS ABSTRACTS OF JAPAN, Band 5, Nr. 179 (E-82)[851], 17. November 1981 & JP-A-56 104 416 (NIPPON FERRITE K.K.) 20.08.1981 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3628290A1 (en) * 1986-08-20 1988-02-25 Siemens Ag Coil former for electrical coils
EP0594031A1 (en) * 1992-10-22 1994-04-27 SIEMENS MATSUSHITA COMPONENTS GmbH & CO. KG Electric inductance element
US5489884A (en) * 1992-10-22 1996-02-06 Siemens Atiengesellschaft Inductive electric component
DE29519428U1 (en) * 1995-12-07 1996-04-04 Siemens Ag Retaining bracket for a ferrite core

Also Published As

Publication number Publication date
ES283173Y (en) 1986-01-01
ATE24064T1 (en) 1986-12-15
FI77740B (en) 1988-12-30
JPS59132110A (en) 1984-07-30
DE3235655A1 (en) 1984-03-29
DK159222B (en) 1990-09-17
PT77390B (en) 1986-02-13
DK439183A (en) 1984-03-28
FI833444A0 (en) 1983-09-26
EP0104649B1 (en) 1986-12-03
ES283173U (en) 1985-05-16
FI77740C (en) 1989-04-10
US4565988A (en) 1986-01-21
DE3368144D1 (en) 1987-01-15
EP0104649A3 (en) 1984-05-02
DK159222C (en) 1991-03-11
FI833444A (en) 1984-03-28
DK439183D0 (en) 1983-09-26
PT77390A (en) 1983-10-01

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