EP0809264A1 - Device for mutually fixing of ferromagnetic cores and supports for electric windings in inductive components - Google Patents
Device for mutually fixing of ferromagnetic cores and supports for electric windings in inductive components Download PDFInfo
- Publication number
- EP0809264A1 EP0809264A1 EP97106573A EP97106573A EP0809264A1 EP 0809264 A1 EP0809264 A1 EP 0809264A1 EP 97106573 A EP97106573 A EP 97106573A EP 97106573 A EP97106573 A EP 97106573A EP 0809264 A1 EP0809264 A1 EP 0809264A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spring
- ring
- ring spring
- toothing
- ferromagnetic
- 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- Withdrawn
Links
- 230000005294 ferromagnetic effect Effects 0.000 title claims abstract description 7
- 230000001939 inductive effect Effects 0.000 title claims abstract description 7
- 238000004804 winding Methods 0.000 title 1
- 239000004020 conductor Substances 0.000 claims abstract description 7
- 239000007769 metal material Substances 0.000 claims abstract description 4
- 239000003302 ferromagnetic material Substances 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims 1
- 239000002356 single layer Substances 0.000 claims 1
- 239000000969 carrier Substances 0.000 abstract description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Images
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
- H01F17/043—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
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/266—Fastening or mounting the core on casing or support
Definitions
- the present invention relates to a device for the mutual fixing of ferromagnetic cores and carriers for electrical conductors in inductive components.
- the core and coil former are clamped with plastic insulating washers for mutual fixing, the core being additionally soldered into a circuit board by means of a clip for permanent fastening.
- plastic insulating washers made of plastic are not stable in the long term and are unsuitable for temperatures occurring during the soldering processes.
- the core and the bobbin can also be fixed to one another by gluing, which is the case in particular with SMD inductors.
- gluing which is the case in particular with SMD inductors.
- this is comparatively expensive and not reliable and there is also no possibility of post-processing or recycling.
- FIG. 7 of the drawings Such a design is, for example, from the data book Ferrites and accessories "by the applicant, 1994 edition, p. 215.
- FIG. 7 shows the essential parts of an inductive component in the form of an exploded view.
- the component has a coil former 1 and two magnetic core halves 2, 3 which are placed on the coil former 1 and held on the coil former by means of clips 5. Between A first insulating washer 4 is inserted into the coil former 1 and the upper core half 2. A second insulating washer 6 is placed on the underside of the lower core half 3.
- the present invention has for its object to provide a backlash-free fixation of the type mentioned above, which is long-term stable and is also resistant to high temperatures, such as occur during soldering.
- Figures 1 to 6 each show an embodiment of a fixing spring according to the invention and Figure 7 shows the already explained pin design of an inductive component.
- an annular spring 10 with a slot 11 is provided.
- This ring spring 10, 11 is made of metallic material.
- the metallic material can be a non-ferromagnetic or weakly ferromagnetic material.
- the slot 11 is essential for an electrical interruption of the spring body.
- the spring 10 has an outer slot toothing 12, wherein in FIG. 1 the toothing is twisted by one in the radial direction extending axis is indicated, whereby the spring action comes about.
- an internal slot toothing 22 is provided, with the toothing also being rotated in order to achieve the spring action.
- a toothing 32 in the form of a toothed ring is provided, the teeth also being twisted again to achieve the spring action.
- FIGS. 4A and 4B show an annular spring 40 with a slot 41 in the form of a plate spring with a curvature which can be seen in FIG. 4B and which ensures the spring action.
- FIGS. 5A and 5B show an annular spring 50 with a slot 51, in which the spring body is rotated in the annular plane in the manner shown in FIG. 5B.
- FIG. 6 shows a plate spring 60 with a slot 61 in the form of circular ring segments which are connected to one another at one end and which have a curvature (not shown in more detail) perpendicular to the plane of the drawing in order to achieve the spring action.
- the springs shown in FIGS. 1 to 6 can be used, for example, instead of the insulating washer 4 according to FIG. 7 for fixing the coil former 1 and the core halves 2, 3 against one another.
- the support for electrical lines need not be exclusively a coil former of the type shown in FIG. It can also be a single or multi-layer circuit board.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Coils Or Transformers For Communication (AREA)
- Bolts, Nuts, And Washers (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft eine Einrichtung zur gegenseitigen Fixierung von ferromagnetischen Kernen und Trägern für elektrische Leiter in induktiven Bauelementen.The present invention relates to a device for the mutual fixing of ferromagnetic cores and carriers for electrical conductors in inductive components.
Bei Stiftbauformen von induktiven Bauelementen werden Kern und Spulenkörper zur gegenseitigen Fixierung mit Isolierscheiben aus Kunststoff geklemmt, wobei der Kern zur dauerhaften Befestigung zusätzlich über eine Klammer in eine Schaltungsplatine eingelötet wird. Dabei ergibt sich die Schwierigkeit, daß Isolierscheiben aus Kunststoff nicht langzeit stabil sind und für bei den Lötvorgängen auftretende Temperaturen ungeeignet sind.In the case of pin designs of inductive components, the core and coil former are clamped with plastic insulating washers for mutual fixing, the core being additionally soldered into a circuit board by means of a clip for permanent fastening. The difficulty arises here that insulating washers made of plastic are not stable in the long term and are unsuitable for temperatures occurring during the soldering processes.
Weiterhin können Kern und Spulenkörper auch durch Kleben gegeneinander fixiert werden, was insbesondere bei SMD-Induktivitäten der Fall ist. Dies ist jedoch vergleichsweise teuer und nicht prozeßsicher und es besteht darüber hinaus keine Möglichkeit einer Nachbearbeitung oder eines Recycling.Furthermore, the core and the bobbin can also be fixed to one another by gluing, which is the case in particular with SMD inductors. However, this is comparatively expensive and not reliable and there is also no possibility of post-processing or recycling.
Die erstgenannte Möglichkeit des Klemmens von Kern und Spulenkörper bei Stiftbauformen mittels isolierenden Kunststoffscheiben ist in Figur 7 der Zeichnungen dargestellt. Eine derartige Bauform ist beispielsweise aus dem Datenbuch
Figur 7 zeigt die wesentlichen Teile eines induktiven Bauelementes in Form einer Explosionsdarstellung. Das Bauelement besitzt einen Spulenkörper 1 sowie zwei Magnetkernhälften 2, 3 welche auf den Spulenkörper 1 aufgesetzt und mittels Klammern 5 auf dem Spulenkörper gehalten werden. Zwischen den Spulenkörper 1 und die obere Kernhälfte 2 ist eine erste Isolierscheibe 4 eingefügt. Eine zweite Isolierscheibe 6 wird auf die Unterseite der unteren Kernhälfte 3 aufgesetzt. Beim Zusammenfügen des Bauelementes mit den Klammern 5 sowie beim Einbau des Bauelementes etwa in eine Schaltungsplatine werden der Spulenkörper 1 und die Kernhälften 2, 3 verdrehsicher gegeneinander fixiert.FIG. 7 shows the essential parts of an inductive component in the form of an exploded view. The component has a coil former 1 and two
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine spielfreie, verdrehsichere Fixierung der oben genannten Art zu schaffen, welche langzeitstabil ist und auch für hohe Temperaturen, wie sie beispielsweise beim Löten auftreten, noch beständig ist.The present invention has for its object to provide a backlash-free fixation of the type mentioned above, which is long-term stable and is also resistant to high temperatures, such as occur during soldering.
Diese Aufgabe wird bei einer Einrichtung der eingangs genannten Art erfindungsgemäß durch die Maßnahmen nach dem kennzeichnenden Teil des Patentanspruchs 1 gelöst.This object is achieved according to the invention in a device of the type mentioned at the outset by the measures according to the characterizing part of patent claim 1.
Weiterbildungen der Erfindung sind Gegenstand von Unteransprüchen.Developments of the invention are the subject of dependent claims.
Die Erfindung wird nachfolgend anhand von in den Figuren der Zeichnung dargestellten Ausführungsbeispielen näher erläutert. Dabei zeigen die Figuren 1 bis 6 jeweils eine Ausführungsform einer erfindungsgemäßen Fixierungsfeder und Figur 7 die bereits erläuterte Stiftbauform eines induktiven Bauelementes.The invention is explained in more detail below with reference to exemplary embodiments shown in the figures of the drawing. Figures 1 to 6 each show an embodiment of a fixing spring according to the invention and Figure 7 shows the already explained pin design of an inductive component.
Gemäß Figur 1 ist eine Ringfeder 10 mit einem Schlitz 11 vorgesehen. Diese Ringfeder 10, 11 ist aus metallischem Material hergestellt. Das metallische Material kann ein nicht ferromagnetisches oder schwach ferromagnetisches Material sein. Der Schlitz 11 ist für eine elektrische Unterbrechung des Federkörpers wesentlich.According to FIG. 1, an
Die Feder 10 weist eine äußere Schlitzzahnung 12 auf, wobei in Figur 1 eine Verdrehung der Zahnung um eine in Radialrichtung verlaufende Achse angedeutet ist, wodurch die Federwirkung zustande kommt.The
Bei einer Ringfeder 20 mit einem Schlitz 21 gemäß Figur 2 ist eine Innenschlitzzahnung 22 vorgesehen, wobei ebenfalls wiederum zur Realisierung der Federwirkung eine Verdrehung der Zahnung vorgesehen ist.In the case of an
Bei der Ausführungsform einer Feder 30 mit einem Schlitz 31 nach Figur 3 ist eine Zahnung 32 in Form eines Zahnkranzes vorgesehen, wobei die Zähne zur Realisierung der Federwirkung ebenfalls wieder verdreht sind.In the embodiment of a
Die Figuren 4A und 4B zeigen eine Ringfeder 40 mit einem Schlitz 41 in Form einer Tellerfeder mit einer aus Figur 4B ersichtlichen Wölbung, welche die Federwirkung gewährleistet.FIGS. 4A and 4B show an
Die Figuren 5A und 5B zeigen eine kreisringförmige Feder 50 mit einem Schlitz 51, bei welcher der Federkörper in der aus Figur 5B ersichtlichen Weise in der Kreisringebene verdreht ist.FIGS. 5A and 5B show an annular spring 50 with a
Figur 6 zeigt eine Tellerfeder 60 mit einem Schlitz 61 in Form von an einem Ende miteinander verbundenen Kreisringsegmenten, die zur Realisierung der Federwirkung senkrecht zur Zeichenebene eine (nicht naher dargestellte) Wölbung aufweisen.FIG. 6 shows a
Die in den Figuren 1 bis 6 dargestellten Federn sind beispielsweise anstelle der Isolierscheibe 4 nach Figur 7 zur Fixierung des Spulenkörpers 1 und der Kernhälften 2, 3 gegeneinander verwendbar.The springs shown in FIGS. 1 to 6 can be used, for example, instead of the insulating washer 4 according to FIG. 7 for fixing the coil former 1 and the
Es ist darauf hinzuweisen, daß der Träger für elektrische Leitungen nicht ausschließlich ein Spulenkörper der in Figur 7 dargestellten Art sein muß. Es kann auch ein Ein- oder Mehrlagenleiterplatte sein.It should be pointed out that the support for electrical lines need not be exclusively a coil former of the type shown in FIG. It can also be a single or multi-layer circuit board.
Claims (12)
dadurch gekennzeichnet,
daß in einem Spalt zwischen ferromagnetischem Kern (2, 3) und Träger (1) für elektrische Leiter eine geschlitzte Ringfeder (10; 20; 30; 40; 50; 60) aus metallischem Material vorgesehen ist.Device for fixing ferromagnetic cores (2, 3) and supports (1) for electrical conductors in inductive components, in particular in inductors designed for SMD mounting,
characterized,
that a slotted ring spring (10; 20; 30; 40; 50; 60) made of metallic material is provided in a gap between the ferromagnetic core (2, 3) and carrier (1) for electrical conductors.
dadurch gekennzeichnet,
daß das Material der Ringfeder (10; 20; 30; 40; 50; 60) ein nicht ferromagnetisches Material ist.Device according to claim 1,
characterized,
that the material of the ring spring (10; 20; 30; 40; 50; 60) is a non-ferromagnetic material.
dadurch gekennzeichnet,
daß die Ringfeder eine außen gezahnte Ringfeder (10, 11, 12; 30, 31, 32) ist.Device according to claim 1 and / or 2,
characterized,
that the ring spring is an externally toothed ring spring (10, 11, 12; 30, 31, 32).
dadurch gekennzeichnet,
daß die Ringfeder eine innen gezahnte Ringfeder (20, 21, 22) ist.Device according to claim 1 and / or 2,
characterized,
that the ring spring is an internally toothed ring spring (20, 21, 22).
dadurch gekennzeichnet,
daß die Zahnung (12; 22) der Ringfeder (10, 11, 12; 20, 21, 22) eine Schlitzzahnung ist.Device according to one of claims 1 to 4,
characterized,
that the toothing (12; 22) of the ring spring (10, 11, 12; 20, 21, 22) is a slot toothing.
dadurch gekennzeichnet,
daß die Zahnung (32) der Ringfeder (30, 31, 32) eine Zahnkranzzahnung ist.Device according to one of claims 1 to 4,
characterized,
that the toothing (32) of the ring spring (30, 31, 32) is a ring gear toothing.
dadurch gekennzeichnet,
daß die Ringfeder eine Tellerfeder (40, 41; 50, 51) ist.Device according to claim 1,
characterized,
that the ring spring is a plate spring (40, 41; 50, 51).
dadurch gekennzeichnet,
daß die Tellerfeder eine kreisringförmige in der Kreisringebene gewölbte Feder (40, 41) ist.Device according to claim 7,
characterized,
that the plate spring is an annular spring (40, 41) which is curved in the annular plane.
dadurch gekennzeichnet,
daß die Tellerfeder eine kreisringförmige in der Kreisringebene verdrehte Feder (50, 51) ist.Device according to claim 7,
characterized,
that the plate spring is an annular spring (50, 51) rotated in the annular plane.
dadurch gekennzeichnet,
daß die Tellerfeder (60, 61, 62) aus zwei gewölbten an einem Ende miteinander verbundenen Kreisringsegmenten (62) gebildet ist.Device according to claim 7,
characterized,
that the plate spring (60, 61, 62) is formed from two curved circular ring segments (62) connected to one another at one end.
dadurch gekennzeichnet,
daß der Träger (1) für elektrische Leiter ein Spulenkörper ist.Device according to one of claims 1 to 10,
characterized,
that the carrier (1) for electrical conductors is a coil former.
dadurch gekennzeichnet,
daß der Träger für elektrische Leiter eine mindestens einlagige Leiterplatte ist.Device according to one of claims 1 to 10,
characterized,
that the carrier for electrical conductors is an at least single-layer printed circuit board.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19621126 | 1996-05-24 | ||
| DE19621126 | 1996-05-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0809264A1 true EP0809264A1 (en) | 1997-11-26 |
Family
ID=7795327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97106573A Withdrawn EP0809264A1 (en) | 1996-05-24 | 1997-04-21 | Device for mutually fixing of ferromagnetic cores and supports for electric windings in inductive components |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0809264A1 (en) |
| JP (1) | JPH1064733A (en) |
| KR (1) | KR970076914A (en) |
| CN (1) | CN1167991A (en) |
| CA (1) | CA2205787A1 (en) |
| SG (1) | SG54499A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016155969A3 (en) * | 2015-03-27 | 2016-11-24 | Epcos Ag | Inductive component and method for producing an inductive component |
| GB2581322A (en) * | 2018-12-23 | 2020-08-19 | Secheron Hasler Uk Ltd | A contact washer and a device for the transfer of electric current including such a washer |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001349348A (en) * | 2000-06-05 | 2001-12-21 | Aichi Mach Ind Co Ltd | Two-way differential clutch |
| CN112034218B (en) * | 2020-09-22 | 2024-04-05 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | CAF testing device and testing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR996091A (en) * | 1945-04-24 | 1951-12-12 | Comp Generale Electricite | Method of protecting a coil with or without a magnetic core and corresponding sealed assembly |
| DE854382C (en) * | 1951-02-27 | 1952-11-04 | Schaub Appbau Ges M B H G | Method of fixing coils on cores or in tubes |
| GB1125275A (en) * | 1964-08-30 | 1968-08-28 | Plessey Uk Ltd | Improvements relating to electromagnetic apparatus |
| DE1564623A1 (en) * | 1966-06-10 | 1969-07-24 | Siemens Ag | Multi-turn coil or transformer |
| CH499188A (en) * | 1968-08-02 | 1970-11-15 | Telefunken Patent | Pot core coil used in communications technology with several symmetrical windings, in particular Pupin's coil |
| FR2118872A1 (en) * | 1970-12-24 | 1972-08-04 | Fr |
-
1997
- 1997-04-21 EP EP97106573A patent/EP0809264A1/en not_active Withdrawn
- 1997-04-25 SG SG1997001312A patent/SG54499A1/en unknown
- 1997-05-21 JP JP14601497A patent/JPH1064733A/en active Pending
- 1997-05-22 KR KR1019970019903A patent/KR970076914A/en not_active Application Discontinuation
- 1997-05-22 CA CA 2205787 patent/CA2205787A1/en not_active Abandoned
- 1997-05-23 CN CN 97111296 patent/CN1167991A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR996091A (en) * | 1945-04-24 | 1951-12-12 | Comp Generale Electricite | Method of protecting a coil with or without a magnetic core and corresponding sealed assembly |
| DE854382C (en) * | 1951-02-27 | 1952-11-04 | Schaub Appbau Ges M B H G | Method of fixing coils on cores or in tubes |
| GB1125275A (en) * | 1964-08-30 | 1968-08-28 | Plessey Uk Ltd | Improvements relating to electromagnetic apparatus |
| DE1564623A1 (en) * | 1966-06-10 | 1969-07-24 | Siemens Ag | Multi-turn coil or transformer |
| CH499188A (en) * | 1968-08-02 | 1970-11-15 | Telefunken Patent | Pot core coil used in communications technology with several symmetrical windings, in particular Pupin's coil |
| FR2118872A1 (en) * | 1970-12-24 | 1972-08-04 | Fr |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016155969A3 (en) * | 2015-03-27 | 2016-11-24 | Epcos Ag | Inductive component and method for producing an inductive component |
| US10580562B2 (en) | 2015-03-27 | 2020-03-03 | Epcos Ag | Inductive component and method for producing an inductive component |
| GB2581322A (en) * | 2018-12-23 | 2020-08-19 | Secheron Hasler Uk Ltd | A contact washer and a device for the transfer of electric current including such a washer |
| GB2581322B (en) * | 2018-12-23 | 2022-09-21 | Secheron Hasler Uk Ltd | A device for the transfer of electric current including a contact washer |
Also Published As
| Publication number | Publication date |
|---|---|
| KR970076914A (en) | 1997-12-12 |
| CN1167991A (en) | 1997-12-17 |
| CA2205787A1 (en) | 1997-11-24 |
| SG54499A1 (en) | 1998-11-16 |
| JPH1064733A (en) | 1998-03-06 |
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