DE4206813A1 - Inductive component arrangement - is sheathed in cast or moulded magnetic powder mixt which is finished at level of one surface of coil former so as to enclose coil completely on all sides - Google Patents

Inductive component arrangement - is sheathed in cast or moulded magnetic powder mixt which is finished at level of one surface of coil former so as to enclose coil completely on all sides

Info

Publication number
DE4206813A1
DE4206813A1 DE19924206813 DE4206813A DE4206813A1 DE 4206813 A1 DE4206813 A1 DE 4206813A1 DE 19924206813 DE19924206813 DE 19924206813 DE 4206813 A DE4206813 A DE 4206813A DE 4206813 A1 DE4206813 A1 DE 4206813A1
Authority
DE
Germany
Prior art keywords
coil
inductive component
magnetic
winding
finished
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.)
Ceased
Application number
DE19924206813
Other languages
German (de)
Inventor
Gerhard Meindl
Egon Heringer
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
Siemens Matsushita Components GmbH and Co KG
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 Siemens Matsushita Components GmbH and Co KG filed Critical Siemens Matsushita Components GmbH and Co KG
Priority to DE19924206813 priority Critical patent/DE4206813A1/en
Publication of DE4206813A1 publication Critical patent/DE4206813A1/en
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
    • 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
    • H01F17/043—Fixed inductances of the signal type  with magnetic core with two, usually identical or nearly identical parts enclosing completely the coil (pot cores)
    • 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
    • H01F27/29—Terminals; Tapping arrangements for signal inductances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/04—Arrangements of electric connections to coils, e.g. leads
    • H01F2005/046—Details of formers and pin terminals related to mounting on printed circuits
    • 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
    • H01F2017/048—Fixed inductances of the signal type  with magnetic core with encapsulating core, e.g. made of resin and magnetic powder

Abstract

The coil (3) is wound on a former (2) and encased in a sheath (1) of magnetic material which fits closely around the coil former and is finished flush with one of its surfaces. Connection pins (4) are brought out from the ends (5) of the winding. The starting material for the magnetic sheath may be a mixt. of presintered ferrite or carbonyl iron and a plastic powder. The pins may be matched conventionally to e.g. surface mount or plug-through applications. ADVANTAGE -Mfg. cost is reduced by simplified combination of the coil former and surrounding magnetic material.

Description

Die vorliegende Erfindung betrifft ein induktives Bauelement nach dem Oberbegriff des Patentanspruchs 1 sowie ein Verfahren zu dessen Herstellung.The present invention relates to an inductive component according to the preamble of claim 1 and a method for its manufacture.

Bisher werden induktive Bauelemente so hergestellt, daß ein eine Wicklung tragender Spulenkörper mit mindestens einem fer­ tigen Ferrit-Kern zusammengesetzt wird. Dies kann beispiels­ weise mittels eines Montageautomaten oder von Hand erfolgen.So far, inductive components have been manufactured so that a a winding-carrying bobbin with at least one fer ferrite core is assembled. For example done by means of an automatic assembly machine or by hand.

Fig. 4 zeigt ein bekanntes Beispiel für eine induktive Spule mit einem Einzel-Ferrit-Schalenkern 1, in den ein eine Wicklung 3 tragender Spulenkörper 2 eingesetzt ist. Die Wicklung 3 ist über Anschlußstifte 4 elektrisch zugänglich, an welche das Ende des Wicklungsdrahtes in Form einer Wickellocke 5 eingewickelt und angelötet ist. Eine derartige induktive Spule findet bei­ spielsweise als Sensor für induktive Näherungsschalter Anwen­ dung. Eine solche Spule ist beispielsweise aus dem Siemens-Da­ tenbuch 1990/91 "Ferrite und Zubehör", Seite 310 im Prinzip bekannt. Fig. 4 shows a known example for an inductive coil with a single-ferrite pot core 1, in which a coil 3, a coil supporting body 2 is inserted. The winding 3 is electrically accessible via pins 4 , to which the end of the winding wire is wound and soldered in the form of a winding curl 5 . Such an inductive coil is used for example as a sensor for inductive proximity switches. Such a coil is known in principle, for example, from the Siemens data book 1990/91 "Ferrites and Accessories", page 310.

Die Fig. 5 und 6 zeigen den bewickelten Spulenkörper 2 bzw. den Schalenkern 1 gesondert, wobei die Zusammenfügung durch einen Pfeil 6 angeordnet ist. FIGS. 5 and 6 show the wound bobbin 2 and the shell core 1 separately, wherein the assembly is arranged by an arrow 6.

Fig. 7 zeigt ein weiteres Beispiel für eine bekannte indukti­ ve Spule mit zwei RM-Ferrit-Kernhälften 1 und 1′, in die wie­ derum ein eine Wicklung 3 tragender Spulenkörper 2 eingesetzt ist. Die Wicklung 3 ist dabei ebenfalls über Anschlußstifte 4 elektrisch zugänglich. Eine derartige induktive Spule ist bei­ spielsweise ebenfalls aus dem o.g. Siemens-Datenbuch, Seiten 180 und 181 bekannt. Fig. 7 shows a further example of a known indukti ve coil with two RM ferrite core halves 1 and 1 ', in which, in turn, a coil body 2 carrying a winding 3 is used. The winding 3 is also electrically accessible via pins 4 . Such an inductive coil is also known for example from the above-mentioned Siemens data book, pages 180 and 181.

Die Herstellung derartiger induktiver Bauelemente ist insofern noch aufwendig, als eine Montage des die Wicklung tragenden Spulenkörpers mit dem Ferrit-Kern, wie oben bereits erwähnt, mittels eines Montageautomaten oder von Hand erfolgen muß.The manufacture of such inductive components is insofar even more complex than an assembly of the winding Coil former with the ferrite core, as already mentioned above, by means of an assembly machine or by hand.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein induktives Bauelement sowie ein Verfahren zu dessen Herstel­ lung anzugeben, das hinsichtlich des Zusammenfügens des die Wicklung tragenden Spulenkörpers und des diesen umgebenden magnetischen Materials einfacher ist.The present invention is based on the object inductive component and a method for its manufacture to indicate that regarding the assembly of the Winding-carrying bobbin and the surrounding magnetic material is easier.

Diese Aufgabe wird bei einem induktiven Bauelement der ein­ gangs genannten Art erfindungsgemäß durch das Merkmal des kennzeichnenden Teils des Patentanspruchs 1 gelöst.This task is the one with an inductive component gangs mentioned type according to the invention by the feature of characterizing part of claim 1 solved.

Weiterbildungen des erfindungsgemäßen induktiven Bauelementes sind Gegenstand von Unteransprüchen.Developments of the inductive component according to the invention are the subject of subclaims.

Ein Verfahren zur Herstellung eines derartigen induktiven Bau­ elementes ist Gegenstand des Patentanspruchs 6.A method of manufacturing such an inductive structure element is the subject of claim 6.

Die Erfindung wird im folgenden anhand von in Figuren der Zeichnung dargestellten Ausführungsbeispielen näher erläutert. Es zeigt:The invention is described below with reference to the figures in FIG Drawing illustrated embodiments explained in more detail. It shows:

Fig. 1 eine Ausführungsform eines erfindungsgemäßen induktiven Bauelementes mit einer magnetischen Umhüllung in Form eines Schalenkerns, Fig. 1 shows an embodiment of an inductive device according to the invention with a magnetic cladding in the form of a cup core,

Fig. 2 einen bewickelten Spulenkörper für das Bauelement nach Fig. 1, Fig. 2 shows a wound coil body for the device according to Fig. 1,

Fig. 3 eine Ausführungsform eines erfindungsgemäßen induktiven Bauelementes, bei dem die Form der magnetischen Umhüllung einer Schalenkernform ähnlich ist, Fig. 3 shows an embodiment of an inductive device according to the invention, in which the shape of the magnetic sheath is similar to a shell core mold,

Fig. 4 bis 6 die bereits oben erläuterte Ausführungsform eines erfindungsgemäßen induktiven Bauelemen­ tes mit einem Schalenkern, und Fig. 4 to 6, the embodiment of an inductive Bauelemen tes already explained above with a shell core, and

Fig. 7 die bereits oben erläuterte Ausführungsform eines bekannten induktiven Bauelementes mit zwei RM-Kernen. Fig. 7, the above-explained embodiment of a known inductor with two RM cores.

Bei der Ausführungsform des erfindungsgemäßen induktiven Bau­ elementes nach den Fig. 1 und 2 entspricht der Spulenkörper 2 und die von ihm getragene Wicklung 3 den entsprechenden Ele­ menten des oben erläuterten bekannten induktiven Bauelementes nach den Fig. 4 bis 6. Anstelle des Schalenkerns 1 nach den Fig. 4 und 6 ist eine entsprechende Umhüllung 1 aus magne­ tischem Material vorgesehen, die den die Wicklung 3 tragenden Spulenkörper 2 derart formschlüssig umgibt, daß sie mit einer Fläche des Spulenkörpers 2 im wesentlichen bündig abschließt. Im Ausführungsbeispiel handelt es sich dabei in der Zeichen­ ebene gesehen um die Oberseite. Die Anschlußstifte 4 sowie die Wickellocken 5 entsprechen den Elementen 4 und 5 nach den Figuren.In the embodiment of the inductive construction element according to FIGS. 1 and 2, the coil body 2 and the winding 3 carried by it corresponds to the corresponding elements of the above-mentioned known inductive component according to FIGS . 4 to 6. Instead of the shell core 1 according to the FIGS. 4 and 6 a corresponding envelope 1 is provided from magnetic tischem material which surrounds the winding bobbin 3 carrying 2 in such form-fitting manner that it is flush with a surface of the coil body 2 substantially. In the exemplary embodiment, this is seen in the plane of the characters on the top. The connecting pins 4 and the winding curls 5 correspond to the elements 4 and 5 according to the figures.

Als Ausgangsmaterial für die magnetische Umhüllung 1 kann ein Pulvergemisch aus vorgesintertem Ferrit und Kunststoff oder ein Pulvergemisch aus Carbonyleisen und Kunststoff Verwendung finden. Das Aufbringen der Umhüllung 1 kann mittels in der Kunststoffverarbeitung an sich bekannter Verfahren erfolgen. Das Ausgangsmaterial für die magnetische Umhüllung 1 kann danach verspritzt, vergossen oder verpreßt werden.A powder mixture of presintered ferrite and plastic or a powder mixture of carbonyl iron and plastic can be used as the starting material for the magnetic sheath 1 . The covering 1 can be applied by methods known per se in plastics processing. The starting material for the magnetic casing 1 can then be sprayed, cast or pressed.

Die Anschlußstifte 4 können in an sich bekannter Weise an die entsprechende Weiterverwendung der induktiven Spule beispiels­ weise in SMD- oder Durchsteck-Technik angepaßt sein.The pins 4 can be adapted in a manner known per se to the corresponding further use of the inductive coil, for example in SMD or push-through technology.

Bei der Ausführungsform des erfindungsgemäßen elektrischen Bauelementes nach Fig. 3, das ebenfalls wiederum einen eine Wicklung 3 tragenden Spulenkörper 2 aufweist, entspricht die magnetische Umhüllung 1 den beiden RM-Kernhälften 1 und 1′ der bekannten induktiven Spule nach Fig. 7. Für die Herstellung der magnetischen Umhüllung 1 gelten die Ausführungen zur Ausführungsform nach Fig. 1 entsprechend. Gleiches gilt für die Anschlußstifte 4.In the embodiment of the electrical component according to the invention according to FIG. 3, which in turn also has a coil body 2 carrying a winding 3 , the magnetic casing 1 corresponds to the two RM core halves 1 and 1 'of the known inductive coil according to FIG. 7. For the production the remarks on the embodiment according to FIG. 1 apply correspondingly to the magnetic envelope 1 . The same applies to the connecting pins 4 .

Claims (6)

1. Induktives Bauelement mit einem eine Wicklung (3) tragen­ den Spulenkörper (2) und mit einem den die Wicklung (3) tra­ genden Spulenkörper (2) umgebenden magnetischen Material (1), dadurch gekennzeichnet, daß das magnetische Material (1) als Umhüllung vorgesehen ist.1. Inductive component with a winding ( 3 ) carry the bobbin ( 2 ) and with a winding ( 3 ) carrying coil body ( 2 ) surrounding magnetic material ( 1 ), characterized in that the magnetic material ( 1 ) as Wrapping is provided. 2. Induktives Bauelement nach Anspruch 1, dadurch gekennzeichnet, daß die magnetische Umhüllung (1) mit einer Fläche des die Wicklung (3) tragenden Spulenkörpers (2) im wesentlichen bündig abschließt.2. Inductive component according to claim 1, characterized in that the magnetic sheath ( 1 ) with a surface of the coil ( 3 ) carrying coil body ( 2 ) is essentially flush. 3. Induktives Bauelement nach Anspruch 1, dadurch gekennzeichnet, daß die magnetische Umhüllung (1) den die Wicklung (3) tragen­ den Spulenkörper (2) allseitig umgibt.3. Inductive component according to claim 1, characterized in that the magnetic sheath ( 1 ) which surrounds the winding ( 3 ) surrounds the coil body ( 2 ) on all sides. 4. Induktives Bauelement nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß als Ausgangsmaterial für die magnetische Umhüllung (1) ein Pulvergemisch aus vorgesintertem Ferrit und Kunststoff Verwen­ dung findet.4. Inductive component according to one of claims 1 to 3, characterized in that a powder mixture of presintered ferrite and plastic is used as the starting material for the magnetic sheathing ( 1 ). 5. Induktives Bauelement nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß als Ausgangsmaterial für die magnetische Umhüllung (1) ein Pulvergemisch aus Carbonyleisen und Kunststoff Verwendung findet.5. Inductive component according to one of claims 1 to 3, characterized in that a powder mixture of carbonyl iron and plastic is used as the starting material for the magnetic sheath ( 1 ). 6. Verfahren zur Herstellung eines induktiven Bauelementes nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die magnetische Umhüllung (1) durch Verspritzen, Vergießen oder Verpreßen des Ausgangsmaterials hergestellt ist.6. A method for producing an inductive component according to one of claims 1 to 3, characterized in that the magnetic sheath ( 1 ) is produced by spraying, casting or pressing the starting material.
DE19924206813 1992-03-04 1992-03-04 Inductive component arrangement - is sheathed in cast or moulded magnetic powder mixt which is finished at level of one surface of coil former so as to enclose coil completely on all sides Ceased DE4206813A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19924206813 DE4206813A1 (en) 1992-03-04 1992-03-04 Inductive component arrangement - is sheathed in cast or moulded magnetic powder mixt which is finished at level of one surface of coil former so as to enclose coil completely on all sides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19924206813 DE4206813A1 (en) 1992-03-04 1992-03-04 Inductive component arrangement - is sheathed in cast or moulded magnetic powder mixt which is finished at level of one surface of coil former so as to enclose coil completely on all sides

Publications (1)

Publication Number Publication Date
DE4206813A1 true DE4206813A1 (en) 1993-09-09

Family

ID=6453206

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19924206813 Ceased DE4206813A1 (en) 1992-03-04 1992-03-04 Inductive component arrangement - is sheathed in cast or moulded magnetic powder mixt which is finished at level of one surface of coil former so as to enclose coil completely on all sides

Country Status (1)

Country Link
DE (1) DE4206813A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1071104A2 (en) * 1999-07-20 2001-01-24 Eaton Corporation Rotary inductive coupling
GB2379558A (en) * 2001-09-11 2003-03-12 Baker R Electromagnetic component and its method of manufacture
DE102006058336A1 (en) * 2006-12-11 2008-06-19 Vacuumschmelze Gmbh & Co. Kg Inductive SMD component
CN105405610A (en) * 2015-12-28 2016-03-16 江苏晨朗电子集团有限公司 Transformer
DE202016100054U1 (en) * 2016-01-08 2017-04-11 Turck Holding Gmbh Inductive proximity switch with a bobbin fixed by a coil holder in a spool core
CN108305738A (en) * 2017-01-12 2018-07-20 沃思电子埃索斯有限责任两合公司 Sensor component and method for manufacturing sensor component

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2241049A1 (en) * 1972-08-21 1974-03-21 Heinrich Anthoefer Inhaber Her Sewing machine thread cutter - provided with oscillatable cutter blade on control shaft for co-operation with gripper cutter blade
DE2619541A1 (en) * 1976-05-04 1977-11-10 Usingen Gmbh & Co Choke coil for interference suppression filter - has winding embedded in core cap and external casing with bolt
DE3008447A1 (en) * 1979-03-09 1980-09-18 Gen Electric INDUCTIVE COMPONENT FOR FORMING A MAGNETIC CIRCLE, METHOD FOR THE PRODUCTION THEREOF AND MATERIAL FOR ENCLOSURE OF COMPONENTS FOR THE FORMATION OF A MAGNETIC CIRCLE

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2241049A1 (en) * 1972-08-21 1974-03-21 Heinrich Anthoefer Inhaber Her Sewing machine thread cutter - provided with oscillatable cutter blade on control shaft for co-operation with gripper cutter blade
DE2619541A1 (en) * 1976-05-04 1977-11-10 Usingen Gmbh & Co Choke coil for interference suppression filter - has winding embedded in core cap and external casing with bolt
DE3008447A1 (en) * 1979-03-09 1980-09-18 Gen Electric INDUCTIVE COMPONENT FOR FORMING A MAGNETIC CIRCLE, METHOD FOR THE PRODUCTION THEREOF AND MATERIAL FOR ENCLOSURE OF COMPONENTS FOR THE FORMATION OF A MAGNETIC CIRCLE

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1071104A2 (en) * 1999-07-20 2001-01-24 Eaton Corporation Rotary inductive coupling
EP1071104A3 (en) * 1999-07-20 2002-03-20 Eaton Corporation Rotary inductive coupling
GB2379558A (en) * 2001-09-11 2003-03-12 Baker R Electromagnetic component and its method of manufacture
DE102006058336A1 (en) * 2006-12-11 2008-06-19 Vacuumschmelze Gmbh & Co. Kg Inductive SMD component
CN105405610A (en) * 2015-12-28 2016-03-16 江苏晨朗电子集团有限公司 Transformer
DE202016100054U1 (en) * 2016-01-08 2017-04-11 Turck Holding Gmbh Inductive proximity switch with a bobbin fixed by a coil holder in a spool core
CN108305738A (en) * 2017-01-12 2018-07-20 沃思电子埃索斯有限责任两合公司 Sensor component and method for manufacturing sensor component

Similar Documents

Publication Publication Date Title
EP0177759B1 (en) Electronic component, in particular for a chip inductor
DE19544915A1 (en) Low profile coil / transformer component
DE3008447A1 (en) INDUCTIVE COMPONENT FOR FORMING A MAGNETIC CIRCLE, METHOD FOR THE PRODUCTION THEREOF AND MATERIAL FOR ENCLOSURE OF COMPONENTS FOR THE FORMATION OF A MAGNETIC CIRCLE
WO2003007318A2 (en) Swinging choke
DE10223995C1 (en) Coil body for annular choke coil has wire guide devices at its ends for maintaining wire windings in required pattern
EP0799487B1 (en) Electric component, in particular a coil, preferably for an smd assembly technique
DE4206813A1 (en) Inductive component arrangement - is sheathed in cast or moulded magnetic powder mixt which is finished at level of one surface of coil former so as to enclose coil completely on all sides
DE69729127T2 (en) INDUCTIVE COMPONENT AND METHOD FOR PRODUCING SUCH A COMPONENT
DE4217434A1 (en) Chip inductance with coil wound on core - with undercut end faces for contact attachment
DE3715230A1 (en) Coil which is encased with insulating material, for an electromagnetic relay
DE3110427A1 (en) Annular core-transformer-repeating coil-inductor
EP1287537B1 (en) Inductive miniature component for smd-mounting and method for the production thereof
DE4125552C2 (en) Coated ignition coil
EP0473629B1 (en) Method for producing a coil for transformers, in particular high-voltage transformers
DE4443655C1 (en) Magnet assembly
DE602004012566T2 (en) Assembly for inductors and methods of manufacture
DE8435661U1 (en) Small relay
DE19631375C2 (en) Process for producing a current-compensated choke
DE3030641A1 (en) Miniature coil or transformer assembly - has magnetic core formed from compressed stack of laminations of specified size and shape
DE4327968A1 (en) Inductive electrical component
DE102004001859B4 (en) Inductive component with two windings and manufacturing process
DE19633197A1 (en) Manufacture of electrical inductive devices e.g. coil and core assemblies for mounting on circuit boards
DE1956647B2 (en) Magnetic coil structure for eg a component for mount - ing on a printed circuit panel
DE3826431A1 (en) Method for narrow-tolerance inductance trimming of an electrical component which is provided with connecting pins or has no connecting pins, can be surface mounted, is inductive and has no trimming elements
DE10335001A1 (en) Method for fastening a suppression choke and device including such a suppression choke

Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8131 Rejection