EP0017160B1 - Holder for electrical coil - Google Patents

Holder for electrical coil Download PDF

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Publication number
EP0017160B1
EP0017160B1 EP80101607A EP80101607A EP0017160B1 EP 0017160 B1 EP0017160 B1 EP 0017160B1 EP 80101607 A EP80101607 A EP 80101607A EP 80101607 A EP80101607 A EP 80101607A EP 0017160 B1 EP0017160 B1 EP 0017160B1
Authority
EP
European Patent Office
Prior art keywords
shaped
holder
clip
bores
coil
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
EP80101607A
Other languages
German (de)
French (fr)
Other versions
EP0017160A1 (en
Inventor
Roland Ehrgott
Gerhard Ing. Grad. Meindl
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.)
Siemens AG
Original Assignee
Siemens AG
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 AG filed Critical Siemens AG
Publication of EP0017160A1 publication Critical patent/EP0017160A1/en
Application granted granted Critical
Publication of EP0017160B1 publication Critical patent/EP0017160B1/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
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/263—Fastening parts of the core together
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7016—Diametric end slot is joint component

Definitions

  • the invention relates to a holder for an electrical coil with E-core halves made of magnetic material, in particular with round central legs and with a coil body with a hollow cylindrical winding support, which is pushed onto these central legs and carries integrally molded solder tabs on its end faces, with a U-shaped Bracket or with two screw bolts with hook-shaped ends, the central web or the hook-shaped ends of which abuts directly or indirectly against an outer surface of a first E-core half, the parts of which are parallel to one another in grooves in the E-core halves and the free ones formed with screw threads Ends are guided through bores of a strip-shaped element and screwed to it, which bears against an outer surface of the second E-core half parallel to the outer surface mentioned.
  • a holder is known from US-A-3671903.
  • a holder which consists of a U-shaped sheet metal frame, a cross member which snaps into the frame, and a compensating spring.
  • This bracket is very complex and mechanically extremely unstable.
  • the present invention has for its object to provide a holder for an electrical coil of the type mentioned, which is simple in design, is characterized by a high resistance to shaking and is also easy to assemble and in which a secure cohesion of the preassembled coil is achieved.
  • the invention provides for a holder of the type mentioned at the outset that the holes in the strip-shaped element are expanded to open-edge slots.
  • An additional strip-shaped element can be provided, which is arranged between the outer circumferential surface of the first E-core half and the central web of the U-shaped bracket and has bores for the passage of the bracket, which are expanded to open-edge slots.
  • This bracket is designed so that the two E-core halves are not pressed together in the middle, but on the outside.
  • This electrical coil is fastened to a circuit board by means of the screw bolts or wire clips, the ends of which with screw threads are guided through openings in the circuit board and screwed to the latter.
  • the solder connections of the coil former are plugged into the printed circuit board and soldered there or point upwards by 180 ° and are connected by means of soldered wires or plug connections.
  • the EC core halves 1, 2 according to FIG. 1 have round central legs 15 and grooves 9.
  • a hollow cylindrical winding carrier of a coil former 16, designated 17 in FIG. 2 is pushed onto these central legs.
  • solder tab strips 18, which serve as carriers of solder tabs 19 are integrally formed.
  • the solder tails 19 are optionally contacted with the ends of a winding 20.
  • FIG. 3 shows a U-shaped bracket 14.
  • the mutually parallel parts of the bracket 14 are guided in the grooves 9 of the EC core halves 1, 2.
  • the free ends of the bracket 14 formed with screw threads penetrate bores 5 of a strip-shaped element 3 which bears against the groove-free outer surface of the EC core half 2.
  • the final and shake-proof assembly is then carried out by screwing with screws 21 to a circuit board.
  • the length of the free ends of the brackets is selected such that these ends penetrate the corresponding bores formed in the circuit board and can additionally be screwed to the circuit board.
  • the hollow cylindrical winding carriers are aligned perpendicular to the circuit board.
  • FIG. 3 can, as shown in FIG. 4, be replaced by a holder which has two screw bolts 6 with hook-shaped ends and an additional strip-shaped element 4. As far as this holder contains the same parts, they are identified by the same reference numerals.
  • the bolts 6 or bracket 14 instead of in grooves 9 in each other parallel bores of the E-core halves 1, 2 are guided.
  • a holder is also conceivable, in which the central web of the bracket 14 bears against a further strip-shaped element which is arranged between the adjacent outer surface of the first E core half 1 and the bracket and is provided with bores for the passage of the bracket.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Coils Of Transformers For General Uses (AREA)

Description

Die Erfindung betrifft eine Halterung für eine elektrische Spule mit aus magnetischem Material bestehenden E-Kernhälften, insbesondere mit runden Mittelschenkeln und mit einem Spulenkörper mit hohlzylindrischem Wickelträger, der auf diese Mittelschenkel aufgeschoben ist und an seinen Stirnseiten einstückig angeformte Lötfahnenleisten trägt, mit einem U-förmigen Bügel oder mit zwei Schraubbolzen mit hakenförmigen Enden, dessen Mittelsteg bzw. deren hakenförmige Enden mittel- oder unmittelbar gegen eine Aussenmantelfläche einer ersten E-Kernhäfte anliegt, deren zueinander parallele Teile in Nuten der E-Kernhälften geführt sind und der mit seinen mit Schraubgewinden ausgebildeten freien Enden durch Bohrungen eines streifenförmigen Elements geführt und mit diesen verschraubt ist, das gegen einen zur genannten Aussenmantelfläche parallele Aussenmantelfläche der zweiten E-Kernhälfte anliegt. Eine derartige Halterung ist aus der US-A-3671903 bekannt.The invention relates to a holder for an electrical coil with E-core halves made of magnetic material, in particular with round central legs and with a coil body with a hollow cylindrical winding support, which is pushed onto these central legs and carries integrally molded solder tabs on its end faces, with a U-shaped Bracket or with two screw bolts with hook-shaped ends, the central web or the hook-shaped ends of which abuts directly or indirectly against an outer surface of a first E-core half, the parts of which are parallel to one another in grooves in the E-core halves and the free ones formed with screw threads Ends are guided through bores of a strip-shaped element and screwed to it, which bears against an outer surface of the second E-core half parallel to the outer surface mentioned. Such a holder is known from US-A-3671903.

Bei elektrischen Spulen mit kleinen E-Kernen mit geringem Gewicht, wie sie beispielsweise im Siemens-Datenbuch 1975/76 «Weichmagnetisches Siferrit- und Sirufer-Material» Seiten 372-378 beschrieben sind, wird zur Halterung der aus E-Kernhälften, Spulenkörper und Wicklung bestehenden Spuleneinheit üblicherweise nur ein federnder Bügel verwendet. Für elektrische Spulen mit grossen und gewichtigen E-Kernen sind häufig Blattfedern o.ä. vorgesehen, mittels denen die beiden Kernhälften zusammengedrückt werden. Dies kann jedoch zu einer negativen Beeinflussung des Luftspalts und damit zu unerwünschten Änderungen der elektrischen und magnetischen Werte der Spulen führen.For electrical coils with small E-cores with low weight, as described, for example, in Siemens data book 1975/76 «Soft magnetic siferrite and Sirufer material», pages 372-378, is used to hold the E-core halves, the coil body and the winding existing coil unit usually used only a resilient bracket. For electrical coils with large and heavy E-cores, leaf springs or the like are often used. provided by means of which the two core halves are pressed together. However, this can have a negative influence on the air gap and thus lead to undesirable changes in the electrical and magnetic values of the coils.

Für Spulen mit EC-Kernen mit rundem Mittelschenkel ist eine Halterung bekannt, die aus einem U-förmigen Blechrahmen, einem Querträger, der in den Rahmen eingeschnappt, und einer Ausgleichsfeder besteht. Diese Halterung ist sehr aufwendig und mechanisch äusserst instabil.For coils with EC cores with a round central leg, a holder is known which consists of a U-shaped sheet metal frame, a cross member which snaps into the frame, and a compensating spring. This bracket is very complex and mechanically extremely unstable.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Halterung für eine elektrische Spule der eingangs genannten Art zu schaffen, die einfach gestaltet ist, sich durch eine hohe Schüttelfestigkeit auszeichnet und zudem leicht montierbar ist und bei der ein sicherer Zusammenhalt der vormontierten Spule erreicht wird.The present invention has for its object to provide a holder for an electrical coil of the type mentioned, which is simple in design, is characterized by a high resistance to shaking and is also easy to assemble and in which a secure cohesion of the preassembled coil is achieved.

Zur Lösung dieser Aufgabe sieht die Erfindung bei einer Halterung der eingangs genannten Art vor, dass die Bohrungen des streifenförmigen Elements zu randoffenen Schlitzen erweitert sind.To achieve this object, the invention provides for a holder of the type mentioned at the outset that the holes in the strip-shaped element are expanded to open-edge slots.

Es kann ein zusätzliches streifenförmiges Element vorgesehen sein, das zwischen der Aussenmantelfläche der ersten E-Kernhälfte und dem Mittelsteg des U-förmigen Bügels angeordnet ist und Bohrungen zur Durchführung des Bügels aufweist, die zu randoffenen Schlitzen erweitert sind.An additional strip-shaped element can be provided, which is arranged between the outer circumferential surface of the first E-core half and the central web of the U-shaped bracket and has bores for the passage of the bracket, which are expanded to open-edge slots.

Diese Halterung ist so gestaltet, dass die beiden E-Kernhälften nicht mittig, sondern aussen zusammengedrückt werden. Die Befestigung dieser elektrischen Spule auf einer Schaltungsplatine erfolgt durch die Schraubbolzen bzw. Drahtbügel, deren mit Schraubgewinden ausgebildeten Enden durch Durchbrechungen der Schaltungsplatine geführt und mit dieser verschraubt werden. Die Lötanschlüsse des Spulenkörpers sind dabei in die Leiterplatte gesteckt und dort verlötet oder weisen um 180° nach oben und sind mittels angelöteter Drähte oder Steckanschlüsse verschaltet.This bracket is designed so that the two E-core halves are not pressed together in the middle, but on the outside. This electrical coil is fastened to a circuit board by means of the screw bolts or wire clips, the ends of which with screw threads are guided through openings in the circuit board and screwed to the latter. The solder connections of the coil former are plugged into the printed circuit board and soldered there or point upwards by 180 ° and are connected by means of soldered wires or plug connections.

Die Erfindung wird anhand von Ausführungsbeispielen näher erläutert. Es zeigt:

  • Fig. 1 EC-Kernhälften in auseinandergezogener und perspektivischer Ansicht,
  • Fig. 2 einen bewickelten Spulenkörper,
  • Fig. 3 ein erstes Ausführungsbeispiel, einer Halterung für eine Spule nach Fig. 1 und 2, teilweise in Draufsicht, teilweise in perspektivischer Darstellung,
  • Fig. 4 ein weiteres Ausführungsbeispiel einer Halterung nach der Erfindung in perspektivischer Ansicht
The invention is explained in more detail using exemplary embodiments. It shows:
  • 1 EC core halves in an exploded and perspective view,
  • 2 shows a wound bobbin,
  • 3 shows a first exemplary embodiment, a holder for a coil according to FIGS. 1 and 2, partly in plan view, partly in perspective,
  • Fig. 4 shows a further embodiment of a holder according to the invention in a perspective view

Die EC-Kernhälften 1, 2 gemäss Fig. 1 besitzen runde Mittelschenkel 15 und Nuten 9. Auf diese Mittelschenkel ist ein in Fig. 2 mit 17 bezeichneter hohlzylindrischer Wickelträger eines Spulenkörpers 16 aufgeschoben. An die flanschartigen Stirnenden des Wickelträgers 17 sind Lötfahnenleisten 18, die als Träger von Lötfahnen 19 dienen, einstückig angeformt. Die Lötfahnen 19 sind dabei wahlweise mit den Enden einer Wicklung 20 kontaktiert.The EC core halves 1, 2 according to FIG. 1 have round central legs 15 and grooves 9. A hollow cylindrical winding carrier of a coil former 16, designated 17 in FIG. 2, is pushed onto these central legs. On the flange-like ends of the winding carrier 17, solder tab strips 18, which serve as carriers of solder tabs 19, are integrally formed. The solder tails 19 are optionally contacted with the ends of a winding 20.

Die Halterung nach Fig. 3 zeigt einen U-förmigen Bügel 14. Im montierten Zustand sind die zueinander parallelen Teile des Bügels 14 in den Nuten 9 der EC-Kernhälften 1, 2 geführt. Die mit Schraubgewinden ausgebildeten freien Enden des Bügels 14 durchdringen dabei Bohrungen 5 eines streifenförmigen Elements 3, das gegen die nutfreien Aussenmantelfläche der EC-Kernhälfte 2 anliegt. Durch Zusammendrücken von randoffenen Schlitzen 10 der Bohrung 5 wird ein Verklemmen des streifenförmigen Elements 3 mit den Schraubgewinden des Bügels 14 und damit ein sicherer Zusammenhalt der vormontierten und nocht nicht mit der Schaltungsplatine verschraubten Spule erreicht, was insbesondere bei Transport vorteilhaft ist. Die endgültige und schüttelsichere Montage erfolgt dann durch Verschraubung mittels Schrauben 21 mit einer Schaltungsplatine.3 shows a U-shaped bracket 14. In the assembled state, the mutually parallel parts of the bracket 14 are guided in the grooves 9 of the EC core halves 1, 2. The free ends of the bracket 14 formed with screw threads penetrate bores 5 of a strip-shaped element 3 which bears against the groove-free outer surface of the EC core half 2. By squeezing open-edge slots 10 of the bore 5, a jamming of the strip-shaped element 3 with the screw threads of the bracket 14 and thus a secure cohesion of the preassembled and not yet screwed to the circuit board coil is achieved, which is particularly advantageous during transport. The final and shake-proof assembly is then carried out by screwing with screws 21 to a circuit board.

Die Länge der freien Enden der Bügel ist so gewählt, dass diese Enden die in der Schaltungsplatine ausgebildeten entsprechenden Bohrungen durchdringen und zusätzlich mit der Schaltungsplatine verschraubt werden können. Im montierten Zustand sind dabei die hohlzylindrischen Wikkelträger senkrecht zur Schaltungsplatine ausgerichtet.The length of the free ends of the brackets is selected such that these ends penetrate the corresponding bores formed in the circuit board and can additionally be screwed to the circuit board. In the assembled state, the hollow cylindrical winding carriers are aligned perpendicular to the circuit board.

Die Halterung nach Fig. 3 kann, wie dies Fig. 4 zeigt, durch eine Halterung ersetzt sein, die zwei Schraubbolzen 6 mit hakenförmigen Enden und ein zusätzliches streifenförmiges Element 4 aufweist. Soweit diese Halterung gleiche Teile enthält, sind diese mit gleichen Bezugszeichen bezeichnet.3 can, as shown in FIG. 4, be replaced by a holder which has two screw bolts 6 with hook-shaped ends and an additional strip-shaped element 4. As far as this holder contains the same parts, they are identified by the same reference numerals.

Gegebenenfalls können die Schraubbolzen 6 oder Bügel 14 anstatt in Nuten 9 in zueinander parallel ausgebildeten Bohrungen der E-Kernhälften 1, 2 geführt sein. Denkbar ist auch eine Halterung, bei welcher der Mittefsteg des Bügels 14 gegen ein zwischen der benachbarten Aussenmantelfläche der ersten E-Kernhälfte 1 und dem Bügel angeordnetes weiteres streifenförmiges Element anliegt, das mit Bohrungen zur Durchführung des Bügels versehen ist.Optionally, the bolts 6 or bracket 14 instead of in grooves 9 in each other parallel bores of the E-core halves 1, 2 are guided. A holder is also conceivable, in which the central web of the bracket 14 bears against a further strip-shaped element which is arranged between the adjacent outer surface of the first E core half 1 and the bracket and is provided with bores for the passage of the bracket.

Claims (3)

1. A holder for an electrical coil comprising E-shaped core halves (1, 2), made of a magnetic material and, in particular, having round central arms (15), a coil former (16) which has a hollow- cylindrical winding carrier which is slipped onto the central arms (15) and at its end faces carries soldering tag strips (18) formed in one piece, and a U-shaped clip (14), or two threaded bolts (6) with hooked ends, the central bridge or the hooked ends of which, as the case may be, indirectly of directly about against an outer surface of a first E-shaped core half (1), the mutually parallel parts of which clip or bolts are guided in grooves (9) of the E-shaped core halves (1, 2) and the threaded free ends of which clip or bolts are led through bores (5) in a strip-shaped element (3) and are screwed thereto, which element (3) about against an outer surface of the second E-shaped half (2) which is parallel to said outer surface, characterised in that the bores (5) of the stripshaped element (3) are extended to form slots (10) which are open at the edge.
2. A holder according to claim 1, characterised in that an additional strip-shaped element is provided, which is arranged between the outer surface of the first E-shaped core half (1) and the central bridge of the U-shaped clip (14) and has bores for the passage of the clip (14) which are extended to form slots which are open at the edge.
3. The use of the holder according to claim 1 and 2, characterised in that the coil is secured to a circuit plate by means of the holder.
EP80101607A 1979-03-30 1980-03-26 Holder for electrical coil Expired EP0017160B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19797909134U DE7909134U1 (en) 1979-03-30 1979-03-30 SUPPORT FOR AN ELECTRIC COIL
DE7909134U 1979-03-30

Publications (2)

Publication Number Publication Date
EP0017160A1 EP0017160A1 (en) 1980-10-15
EP0017160B1 true EP0017160B1 (en) 1984-06-20

Family

ID=6702592

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80101607A Expired EP0017160B1 (en) 1979-03-30 1980-03-26 Holder for electrical coil

Country Status (4)

Country Link
US (1) US4325044A (en)
EP (1) EP0017160B1 (en)
DE (1) DE7909134U1 (en)
FI (1) FI71630C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5055971A (en) * 1989-12-21 1991-10-08 At&T Bell Laboratories Magnetic component using core clip arrangement operative for facilitating pick and place surface mount
US5791810A (en) * 1995-09-21 1998-08-11 Williams; Douglas Connecting apparatus
DE19738141C2 (en) * 1997-09-01 2003-06-05 Wagner Int Control system of a coating system with a LON bus structure
US8011849B2 (en) * 2008-04-24 2011-09-06 Douglas Williams Corner connector
US8776376B2 (en) 2008-04-24 2014-07-15 Douglas Williams Method of forming paneled corners

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE525489A (en) *
US2456458A (en) * 1944-05-22 1948-12-14 Gen Electric Electromagnetic induction apparatus and method of forming same
US2796590A (en) * 1955-08-02 1957-06-18 Plessey Co Ltd Transformer
CH400328A (en) * 1961-02-15 1965-10-15 Oerlikon Maschf Press plate segments for sheet metal stacks on an electrical machine
FR1447932A (en) * 1964-02-06 1966-08-05 Videon Sa Further development of transformers used in television receivers to ensure horizontal scanning of the picture tube
US3766643A (en) * 1971-02-08 1973-10-23 W Arrington Method for fabricating a non-inflammable horizontal output transformer
US3671903A (en) * 1971-02-08 1972-06-20 Gte Sylvania Inc Non-inflammable horizontal output transformer
US3760316A (en) * 1973-02-05 1973-09-18 Gen Electric Transformer core assembly
US4095206A (en) * 1975-02-10 1978-06-13 Victor Company Of Japan, Limited Encapsulated transformer assembly
YU170977A (en) * 1977-07-08 1982-06-30 J Ntar Mechanism for pressing cut cores

Also Published As

Publication number Publication date
FI71630B (en) 1986-10-10
DE7909134U1 (en) 1979-07-05
EP0017160A1 (en) 1980-10-15
FI71630C (en) 1987-01-19
US4325044A (en) 1982-04-13
FI800978A (en) 1980-10-01

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