EP1271573A2 - Inductance with core - Google Patents

Inductance with core Download PDF

Info

Publication number
EP1271573A2
EP1271573A2 EP02009101A EP02009101A EP1271573A2 EP 1271573 A2 EP1271573 A2 EP 1271573A2 EP 02009101 A EP02009101 A EP 02009101A EP 02009101 A EP02009101 A EP 02009101A EP 1271573 A2 EP1271573 A2 EP 1271573A2
Authority
EP
European Patent Office
Prior art keywords
core
coil
thread
flanks
wire
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.)
Withdrawn
Application number
EP02009101A
Other languages
German (de)
French (fr)
Other versions
EP1271573A3 (en
Inventor
Werner Bohnert
Heico Bohnert
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.)
Bohnert GmbH
Original Assignee
Bohnert GmbH
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 Bohnert GmbH filed Critical Bohnert GmbH
Publication of EP1271573A2 publication Critical patent/EP1271573A2/en
Publication of EP1271573A3 publication Critical patent/EP1271573A3/en
Withdrawn legal-status Critical Current

Links

Images

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
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/04—Fixed inductances of the signal type  with magnetic core
    • H01F17/045—Fixed inductances of the signal type  with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
    • 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
    • H01F41/04—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 for manufacturing coils
    • H01F41/06—Coil winding
    • H01F41/098—Mandrels; Formers
    • 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
    • H01F41/04—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 for manufacturing coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/02—Coils wound on non-magnetic supports, e.g. formers

Definitions

  • the invention relates to a coil with a core according to the preamble of the claim 1 and a method for their production according to the preamble of the claim 7th
  • the invention has for its object a coil with a core and a method to propose for their manufacture, which simplify the manufacture of the coil.
  • the core of the coil according to the invention has a thread with a acute flank angle.
  • the turns of the coil are frictional between flanks of the thread of the core.
  • the flank angle of the Thread of the core is chosen so that a frictional connection with the turns of the Coil arises when the turns of the coil with sufficient force between the flanks of the thread are introduced.
  • the flank angle of the thread of the core depends on the Material pairing between the wire forming the coil or an electrical one Isolation of the wire and the core.
  • a flat thread is also a limit case an axis of the core of a right-angled flank, i.e. a flank angle of 0 ° possible.
  • a flat thread has the disadvantage, however, that a distance between the Flanks matched very precisely to a diameter of the wire of the coil must be to ensure the desired friction.
  • a tolerance of the Wire diameter and the distance of the thread flanks is small, which is why threads with sloping flanks and an acute flank angle be brought forward.
  • a flat thread of the core of the coil is said to be Borderline case to be included by the invention.
  • the invention has the advantage that the coil is wound directly onto the core and thus the work steps of pulling out the coil from a winding mandrel and the placement of the coil on the core. Furthermore, the There is no need to glue the coil to the core.
  • the core of the coil does not necessarily have to be magnetically active, preferably However, a magnetic field influencing the coil becomes magnetizable core used.
  • the core is a ferrite core.
  • the In principle, the coil can be wound from any electrically conductive wire.
  • a copper wire is used for the coil, which has a high has plastic deformability and low elastic deformability.
  • a copper wire springs after winding less and is therefore more suitable for winding the turns between the flanks of the thread of the core.
  • a necessary friction to the turns of the coil against elastic resilience between the Keeping flanks of the core thread is low with copper wire.
  • the wire preferably has electrical insulation, that is for example coated with an insulating varnish. The insulation increases the Friction between the turns of the coil and the flanks of the thread of the Core.
  • the coil 10 according to the invention shown in the drawing is made of a Wrapped copper wire, which is electrically insulated with a layer of lacquer. Ends 12 are stripped for electrical connection of the coil 10, a limit of Lacquer layer is designated by reference number 14.
  • the coil 10 is on one Ferrite core 16 wound.
  • the ferrite core 16 has a cylindrical shape and is provided with a thread 18.
  • the thread 18 is a pointed thread V-shaped cross-section, it has an acute flank angle ⁇ .
  • the coil 10 is wound directly on the core 16.
  • winding the coil 10 on the core 16 is such a large tensile force on the coil 10 forming Copper wire exerted on the copper wire and therefore the turns of the coil 10 are drawn between the flanks of the thread 18.
  • the flank angle ⁇ of the thread 18 is selected to be so acute that the turns of the Coil 10 by friction between the flanks of the thread 18th clamped and the coil 10 is held firmly and rattle-free on the core 16.
  • the flank angle ⁇ of the thread 18 of the core 16 is chosen so acute that a Friction between the coil 10 forming when winding the coil 10th between the flanks of the thread 18 drawn wire and the Thread 18 of the core 16 is created, the wire or the turns of the coil 10 between the flanks of the thread 18 and thus the coil 10 fixed and rattling free on the core 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

The core (16) has a thread (18) with acute-angled edges. The windings of the coil (10) lie with frictional engagement between the edges of the thread of the core. The thread may have a V-shaped section. The core may be magnetizable. The core may be a ferrite core. The coil may comprise copper wire windings, with electrical insulation. An Independent claim is also included for a method of manufacturing a coil with a core.

Description

Die Erfindung betrifft eine Spule mit Kern gemäß dem Oberbegriff des Anspruchs 1 und ein Verfahren zu deren Herstellung gemäß dem Oberbegriff des Anspruchs 7.The invention relates to a coil with a core according to the preamble of the claim 1 and a method for their production according to the preamble of the claim 7th

Der Anwendungsbereich derartiger Spulen ist weit, sie werden u.a. zur Entstörung des Kommutators von Elektromotoren in Kraftfahrzeugen verwendet. Zur Herstellung werden die Spulen auf einem Dorn gewickelt, vom Dorn abgezogen und auf einen Kern aufgeschoben. Um eine Axialbewegung des Kerns gegenüber der Spule und Klappergeräusche zu vermeiden, wird die Spule mit dem Kern verklebt. Die Vermeidung von Klappergeräuschen wird mit zunehmender Anzahl von Elektromotoren in einem Kraftfahrzeug wichtig.The scope of such coils is wide, they are used, among other things. to Suppression of the commutator used by electric motors in motor vehicles. For the production, the coils are wound on a mandrel, from the mandrel peeled off and pushed onto a core. To an axial movement of the To avoid kernel towards the coil and rattling noises, the coil glued to the core. Avoiding rattling noises is with increasing number of electric motors in a motor vehicle important.

Der Erfindung liegt die Aufgabe zugrunde, eine Spule mit Kern und ein Verfahren zu ihrer Herstellung vorzuschlagen, die die Herstellung der Spule vereinfachen.The invention has for its object a coil with a core and a method to propose for their manufacture, which simplify the manufacture of the coil.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale der Ansprüche 1 und 7 gelöst. Der Kern der erfindungsgemäßen Spule weist ein Gewinde mit einem spitzen Flankenwinkel auf. Die Windungen der Spule liegen reibschlüssig zwischen Flanken des Gewindes des Kerns ein. Der Flankenwinkel des Gewindes des Kerns ist so gewählt, dass ein Reibschluß mit den Windungen der Spule entsteht, wenn die Windungen der Spule mit ausreichender Kraft zwischen die Flanken des Gewindes eingebracht werden. Durch den Reibschluß der Windungen der Spule mit den Flanken des Gewindes des Kerns ist die Spule fest auf dem Kern gehalten und Klappergeräusche werden vermieden. Ein Verkleben der Spule mit dem Kern ist nicht notwendig.This object is achieved by the features of claims 1 and 7 solved. The core of the coil according to the invention has a thread with a acute flank angle. The turns of the coil are frictional between flanks of the thread of the core. The flank angle of the Thread of the core is chosen so that a frictional connection with the turns of the Coil arises when the turns of the coil with sufficient force between the flanks of the thread are introduced. By the friction of the Turns of the coil with the flanks of the thread of the core, the coil is fixed held on the core and rattling noises are avoided. A sticking the coil with the core is not necessary.

Um die Windungen der Spule mit ausreichender Kraft zwischen die Flanken des Gewindes des Kerns einzubringen, sieht das erfindungsgemäße Verfahren gemäß Anspruch 7 vor, die Spule unmittelbar auf den Kern zu wickeln und dabei eine so große Zugkraft auf einen die Spule bildenden Draht auszuüben, dass der Draht und damit die Windungen zwischen die Flanken des Gewindes des Kerns gelangen und dort durch Reibschluß gehalten sind.To the windings of the coil with sufficient force between the flanks of the Introducing the thread of the core sees the inventive method according to claim 7, to wind the coil directly on the core while doing so to exert such a large tensile force on a wire forming the coil that the Wire and thus the turns between the flanks of the thread of the core arrive and are held there by friction.

Der Flankenwinkel des Gewindes des Kerns ist abhängig von der Materialpaarung zwischen dem die Spule bildenden Draht bzw. einer elektrischen Isolierung des Drahts und dem Kern. Als Form des Gewindes des Kerns kommt beispielsweise ein V-förmiger Flankenquerschnitt oder auch ein Spitz-, Trapezoder Sägengewinde in Betracht. Als Grenzfall ist auch ein Flachgewinde mit zu einer Achse des Kerns rechtwinkliger Flanke, also einem Flankenwinkel von 0° möglich. Ein Flachgewinde hat allerdings den Nachteil, dass ein Abstand der Flanken sehr genau auf einen Durchmesser des Drahts der Spule abgestimmt sein muss, um den gewünschten Reibschluß zu gewährleisten. Eine Toleranz des Drahtdurchmessers und des Abstandes der Gewindeflanken ist gering, weswegen Gewinde mit schrägstehenden Flanken und spitzem Flankenwinkel vorgezogen werden. Ein Flachgewinde des Kerns der Spule soll jedoch als Grenzfall von der Erfindung mitumfasst sein.The flank angle of the thread of the core depends on the Material pairing between the wire forming the coil or an electrical one Isolation of the wire and the core. As the shape of the thread of the core comes for example a V-shaped flank cross section or a pointed, trapezoidal Saw thread into consideration. A flat thread is also a limit case an axis of the core of a right-angled flank, i.e. a flank angle of 0 ° possible. A flat thread has the disadvantage, however, that a distance between the Flanks matched very precisely to a diameter of the wire of the coil must be to ensure the desired friction. A tolerance of the Wire diameter and the distance of the thread flanks is small, which is why threads with sloping flanks and an acute flank angle be brought forward. A flat thread of the core of the coil is said to be Borderline case to be included by the invention.

Die Erfindung hat den Vorteil, dass die Spule unmittelbar auf den Kern gewickelt wird und somit die Arbeitsschritte des Abziehens der Spule von einem Wickeldorn und des Aufsetzens der Spule auf den Kern entfallen. Des weiteren kann die Verklebung der Spule mit dem Kern entfallen. The invention has the advantage that the coil is wound directly onto the core and thus the work steps of pulling out the coil from a winding mandrel and the placement of the coil on the core. Furthermore, the There is no need to glue the coil to the core.

Der Kern der Spule muss nicht zwingend magnetisch wirksam sein, vorzugsweise wird allerdings ein ein Magnetfeld der Spule beeinflussender, also magnetisierbarer Kern verwendet. Insbesondere ist der Kern ein Ferritkern. Die Spule kann grundsätzlich aus jedem elektrisch leitenden Draht gewickelt sein. Vorzugsweise wird für die Spule ein Kupferdraht verwendet, der eine hohe plastische Verformbarkeit und geringe elastische Verformbarkeit aufweist. Im Vergleich zu beispielsweise Federdraht federt ein Kupferdraht nach dem Wickeln weniger auf und eignet sich deswegen besser zum Wickeln der Windungen zwischen die Flanken des Gewindes des Kerns. Ein notwendiger Reibschluß, um die Windungen der Spule gegen ein elastisches Rückstellvermögen zwischen den Flanken des Gewindes des Kern zu halten, ist bei Kupferdraht niedrig. Vorzugsweise weist der Draht eine elektrische Isolierung auf, ist also beispielsweise mit einem Isolierlack beschichtet. Die Isolierung erhöht die Reibung zwischen den Windungen der Spule und den Flanken des Gewindes des Kerns.The core of the coil does not necessarily have to be magnetically active, preferably However, a magnetic field influencing the coil becomes magnetizable core used. In particular, the core is a ferrite core. The In principle, the coil can be wound from any electrically conductive wire. Preferably, a copper wire is used for the coil, which has a high has plastic deformability and low elastic deformability. in the In comparison to spring wire, for example, a copper wire springs after winding less and is therefore more suitable for winding the turns between the flanks of the thread of the core. A necessary friction to the turns of the coil against elastic resilience between the Keeping flanks of the core thread is low with copper wire. The wire preferably has electrical insulation, that is for example coated with an insulating varnish. The insulation increases the Friction between the turns of the coil and the flanks of the thread of the Core.

Die Erfindung wird nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Die einzige Figur zeigt einen Achsschnitt einer erfindungsgemäßen Spule mit Kern.The invention is illustrated below with the aid of one in the drawing Embodiment explained in more detail. The only figure shows an axial section a coil according to the invention with a core.

Die in der Zeichnung dargestellte, erfindungsgemäße Spule 10 ist aus einem Kupferdraht gewickelt, der mit einer Lackschicht elektrisch isoliert ist. Enden 12 zum elektrischen Anschluß der Spule 10 sind abisoliert, eine Grenze der Lackschicht ist mit Bezugszahl 14 bezeichnet. Die Spule 10 ist auf einen Ferritkern 16 gewickelt. Der Ferritkern 16 weist eine zylindrische Form auf und ist mit einem Gewinde 18 versehen. Das Gewinde 18 ist ein Spitzgewinde mit V-förmigem Querschnitt, es weist einen spitzen Flankenwinkel α auf.The coil 10 according to the invention shown in the drawing is made of a Wrapped copper wire, which is electrically insulated with a layer of lacquer. Ends 12 are stripped for electrical connection of the coil 10, a limit of Lacquer layer is designated by reference number 14. The coil 10 is on one Ferrite core 16 wound. The ferrite core 16 has a cylindrical shape and is provided with a thread 18. The thread 18 is a pointed thread V-shaped cross-section, it has an acute flank angle α.

Die Spule 10 ist unmittelbar auf den Kern 16 gewickelt. Beim Wickeln der Spule 10 auf den Kern 16 wird eine so große Zugkraft auf den die Spule 10 bildenden Kupferdraht ausgeübt, dass der Kupferdraht und damit die Windungen der Spule 10 zwischen die Flanken des Gewindes 18 hineingezogen werden. Der Flankenwinkel α des Gewindes 18 ist so spitz gewählt, dass die Windungen der Spule 10 durch Reibschluß zwischen den Flanken des Gewindes 18 festgeklemmt und die Spule 10 fest und klapperfrei auf dem Kern 16 gehalten ist.The coil 10 is wound directly on the core 16. When winding the coil 10 on the core 16 is such a large tensile force on the coil 10 forming Copper wire exerted on the copper wire and therefore the turns of the coil 10 are drawn between the flanks of the thread 18. The The flank angle α of the thread 18 is selected to be so acute that the turns of the Coil 10 by friction between the flanks of the thread 18th clamped and the coil 10 is held firmly and rattle-free on the core 16.

Der Flankenwinkel α des Gewindes 18 des Kerns 16 ist so spitz gewählt, dass ein Reibschluß zwischen dem die Spule 10 bildenden, beim Wickeln der Spule 10 zwischen die Flanken des Gewindes 18 hineingezogenen Draht und dem Gewinde 18 des Kerns 16 entsteht, der den Draht bzw. die Windungen der Spule 10 zwischen den Flanken des Gewindes 18 und damit die Spule 10 fest und klapperfrei auf dem Kern 16 hält.The flank angle α of the thread 18 of the core 16 is chosen so acute that a Friction between the coil 10 forming when winding the coil 10th between the flanks of the thread 18 drawn wire and the Thread 18 of the core 16 is created, the wire or the turns of the coil 10 between the flanks of the thread 18 and thus the coil 10 fixed and rattling free on the core 16.

Claims (7)

Spule mit Kern, dadurch gekennzeichnet, dass der Kern (16) ein Gewinde (18) mit spitzem Flankenwinkel (α) aufweist, und dass Windungen der Spule (10) reibschlüssig zwischen Flanken des Gewindes (18) des Kerns (16) einliegen.Coil with core, characterized in that the core (16) has a thread (18) with an acute flank angle (α) and that windings of the coil (10) lie frictionally between flanks of the thread (18) of the core (16). Spule nach Anspruch 1, dadurch gekennzeichnet, dass das Gewinde (18) einen V-förmigen Querschnitt aufweist.Coil according to claim 1, characterized in that the thread (18) has a V-shaped cross section. Spule nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Kern (18) magnetisierbar ist.Coil according to claim 1 or 2, characterized in that the core (18) is magnetizable. Spule nach Anspruch 3, dadurch gekennzeichnet, dass der Kern (16) ein Ferritkern ist.Coil according to claim 3, characterized in that the core (16) is a ferrite core. Spule nach Anspruch 1, dadurch gekennzeichnet, dass die Spule (10) aus Kupferdraht gewickelt ist.Coil according to claim 1, characterized in that the coil (10) is wound from copper wire. Spule nach Anspruch 1 oder 5, dadurch gekennzeichnet, dass ein die Spule (10) bildender Draht eine elektrische Isolierung aufweist. Coil according to claim 1 or 5, characterized in that a wire forming the coil (10) has electrical insulation. Verfahren zur Herstellung einer einen Kern aufweisenden Spule, dadurch gekennzeichnet, dass der Kern (16) ein Gewinde (18) mit spitzem Flankenwinkel (α) aufweist, dass die Spule (10) unmittelbar auf den Kern (16) gewickelt wird und dass beim Wickeln eine so große Zugkraft auf einen die Spule (10) bildenden Draht ausgeübt wird, dass Windungen der Spule (10) reibschlüssig zwischen Flanken des Gewindes (18) des Kerns (16) zu liegen kommen.Method for producing a coil having a core, characterized in that the core (16) has a thread (18) with an acute flank angle (α), that the coil (10) is wound directly onto the core (16) and that during winding such a great tensile force is exerted on a wire forming the coil (10) that turns of the coil (10) come to lie frictionally between flanks of the thread (18) of the core (16).
EP02009101A 2001-06-16 2002-04-24 Inductance with core Withdrawn EP1271573A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10129163A DE10129163C2 (en) 2001-06-16 2001-06-16 Coil with core and process for its manufacture
DE10129163 2001-06-16

Publications (2)

Publication Number Publication Date
EP1271573A2 true EP1271573A2 (en) 2003-01-02
EP1271573A3 EP1271573A3 (en) 2003-01-22

Family

ID=7688467

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02009101A Withdrawn EP1271573A3 (en) 2001-06-16 2002-04-24 Inductance with core

Country Status (2)

Country Link
EP (1) EP1271573A3 (en)
DE (1) DE10129163C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010049849A1 (en) * 2008-10-28 2010-05-06 Koninklijke Philips Electronics N.V. Reuse of screw thread

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005022927A1 (en) * 2005-05-13 2006-11-16 Würth Elektronik iBE GmbH Electrical coil element produced by automatic assembly has coil wound onto a core with increased spacing between sections

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB303541A (en) * 1927-10-04 1929-01-04 Frederick William Twort Improvements relating to electrical transformers or couplers
US3147540A (en) * 1957-05-23 1964-09-08 Rea Magnet Wire Company Inc Method of manufacturing encapsulated electrical units
US4500832A (en) * 1983-02-28 1985-02-19 Codman & Shurtleff, Inc. Electrical transformer
US5550523A (en) * 1993-09-01 1996-08-27 U.S. Philips Corporation Inductor
US5767759A (en) * 1993-09-01 1998-06-16 U.S. Philips Corporation Inductor with plural linearly aligned spaced apart ferrite cores

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE849127C (en) * 1950-01-28 1952-09-11 Siemens Ag High frequency coil with a ferromagnetic ground core
DE836055C (en) * 1950-04-15 1952-04-07 Schaub Appbau Ges M B H G Adjustable coil for short wave oscillating circuits
JPH01268006A (en) * 1988-04-20 1989-10-25 Matsushita Electric Ind Co Ltd Surface mounting coil with intermediate tap
JPH05343232A (en) * 1992-06-05 1993-12-24 Murata Mfg Co Ltd Noise filter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB303541A (en) * 1927-10-04 1929-01-04 Frederick William Twort Improvements relating to electrical transformers or couplers
US3147540A (en) * 1957-05-23 1964-09-08 Rea Magnet Wire Company Inc Method of manufacturing encapsulated electrical units
US4500832A (en) * 1983-02-28 1985-02-19 Codman & Shurtleff, Inc. Electrical transformer
US5550523A (en) * 1993-09-01 1996-08-27 U.S. Philips Corporation Inductor
US5767759A (en) * 1993-09-01 1998-06-16 U.S. Philips Corporation Inductor with plural linearly aligned spaced apart ferrite cores

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 032 (E-876), 22. Januar 1990 (1990-01-22) & JP 01 268006 A (MATSUSHITA ELECTRIC IND CO LTD), 25. Oktober 1989 (1989-10-25) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010049849A1 (en) * 2008-10-28 2010-05-06 Koninklijke Philips Electronics N.V. Reuse of screw thread
US8390416B2 (en) 2008-10-28 2013-03-05 Koninklijke Philips Electronics N.V. Reuse of screw thread

Also Published As

Publication number Publication date
DE10129163A1 (en) 2003-01-02
EP1271573A3 (en) 2003-01-22
DE10129163C2 (en) 2003-08-28

Similar Documents

Publication Publication Date Title
DE2244806C2 (en) Dynamo-electric machine
DE102009004193A1 (en) Stator for a slotless engine
EP1597739B1 (en) Insulating element, toroidal core, toroidal core choke, and method for producing said toroidal core choke
WO1996008054A1 (en) Antenna coil
EP3136553B1 (en) Stator system with a sheathing of plastic with improved heat dissipation and method for producing the same
DE102016210746A1 (en) Inductive component, current-compensated inductor and method for producing an inductive component
DE10129163C2 (en) Coil with core and process for its manufacture
EP0811995B1 (en) Magnet coil and method for manufacturing the same
DE1278006B (en) Manufacturing process for toroidal or tubular core windings and windings produced with this process
DE102019119216A1 (en) Electrical energy converter device
DE102018208414A1 (en) Method for producing stranded wire, method for producing an electric motor, and use of stranded wire
DE102019110051B4 (en) Current conductor to form a winding body for an electrical coil, e.g. B. a transformer or a choke
DE4234362C1 (en) Electrical suppression coil with tension restraint - is provided by bead at component end of each terminal wire enclosed by shrink-fit sleeve
WO2016193958A1 (en) Low-noise special transformer
DE3239843A1 (en) SPEAKER VOICE COIL
EP0621612B1 (en) Method for coating a toroidal core as edge protector
DE10313148A1 (en) Conductive winding for an electric machine, is formed from individual non-circular wires formed by deforming circular wires
DE1613107A1 (en) Method of rearranging and binding electrical coils
WO2020011419A1 (en) Device for improving the electromagnetic compatibility of electric/electronic devices, device, and assembly
WO2018068964A1 (en) Method for producing a printed circuit board power converter
DE102008040858A1 (en) Ignition coil i.e. rod ignition coil, for use in constant voltage system of motor vehicle, has chamber walls laterally separate chambers, where ratio of length of chambers to wall thickness of walls lies in range between preset values
DE112021005505T5 (en) choke coil
DE102022205033A1 (en) High-voltage device and method for producing same
DE102014222376A1 (en) Stator winding for an electric machine, electric machine with the stator winding, and method for its production
DE3735683A1 (en) WINDING MATERIAL FOR TRANSFORMERS AND THE LIKE

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RIC1 Information provided on ipc code assigned before grant

Free format text: 7H 01F 17/04 A, 7H 01F 27/30 B, 7H 01F 41/04 B

17P Request for examination filed

Effective date: 20030702

AKX Designation fees paid

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

17Q First examination report despatched

Effective date: 20050418

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20050829