EP0809264A1 - Einrichtung zur gegenseitigen Fixierung von ferromagnetischen Kernen und Trägern für elektrische Leiter in induktiven Bauelementen - Google Patents

Einrichtung zur gegenseitigen Fixierung von ferromagnetischen Kernen und Trägern für elektrische Leiter in induktiven Bauelementen Download PDF

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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Withdrawn
Application number
EP97106573A
Other languages
German (de)
English (en)
French (fr)
Inventor
Bernhard Faust
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
Publication of EP0809264A1 publication Critical patent/EP0809264A1/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/04—Fixed inductances of the signal type  with magnetic core
    • H01F17/043—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)
EP97106573A 1996-05-24 1997-04-21 Einrichtung zur gegenseitigen Fixierung von ferromagnetischen Kernen und Trägern für elektrische Leiter in induktiven Bauelementen Withdrawn EP0809264A1 (de)

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 (de) 1997-11-26

Family

ID=7795327

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97106573A Withdrawn EP0809264A1 (de) 1996-05-24 1997-04-21 Einrichtung zur gegenseitigen Fixierung von ferromagnetischen Kernen und Trägern für elektrische Leiter in induktiven Bauelementen

Country Status (6)

Country Link
EP (1) EP0809264A1 (ja)
JP (1) JPH1064733A (ja)
KR (1) KR970076914A (ja)
CN (1) CN1167991A (ja)
CA (1) CA2205787A1 (ja)
SG (1) SG54499A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016155969A3 (de) * 2015-03-27 2016-11-24 Epcos Ag Induktives bauelement sowie verfahren zur herstellung eines induktiven bauelements
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001349348A (ja) * 2000-06-05 2001-12-21 Aichi Mach Ind Co Ltd ２方向差動クラッチ
CN112034218B (zh) * 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）） 一种caf测试装置及测试方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR996091A (fr) * 1945-04-24 1951-12-12 Comp Generale Electricite Procédé de protection d'une bobine avec ou sans noyau magnétique et montage étanche correspondant
DE854382C (de) * 1951-02-27 1952-11-04 Schaub Appbau Ges M B H G Verfahren zum Festlegen von Spulen an Kernen oder in Rohren
GB1125275A (en) * 1964-08-30 1968-08-28 Plessey Uk Ltd Improvements relating to electromagnetic apparatus
DE1564623A1 (de) * 1966-06-10 1969-07-24 Siemens Ag Mehrwicklige Spule oder UEbertrager
CH499188A (de) * 1968-08-02 1970-11-15 Telefunken Patent Schalenkernspule der Nachrichtentechnik mit mehreren symmetrischen Wicklungen, insbesondere Pupinspule
FR2118872A1 (ja) * 1970-12-24 1972-08-04 Fr

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR996091A (fr) * 1945-04-24 1951-12-12 Comp Generale Electricite Procédé de protection d'une bobine avec ou sans noyau magnétique et montage étanche correspondant
DE854382C (de) * 1951-02-27 1952-11-04 Schaub Appbau Ges M B H G Verfahren zum Festlegen von Spulen an Kernen oder in Rohren
GB1125275A (en) * 1964-08-30 1968-08-28 Plessey Uk Ltd Improvements relating to electromagnetic apparatus
DE1564623A1 (de) * 1966-06-10 1969-07-24 Siemens Ag Mehrwicklige Spule oder UEbertrager
CH499188A (de) * 1968-08-02 1970-11-15 Telefunken Patent Schalenkernspule der Nachrichtentechnik mit mehreren symmetrischen Wicklungen, insbesondere Pupinspule
FR2118872A1 (ja) * 1970-12-24 1972-08-04 Fr

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016155969A3 (de) * 2015-03-27 2016-11-24 Epcos Ag Induktives bauelement sowie verfahren zur herstellung eines induktiven bauelements
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
SG54499A1 (en) 1998-11-16
CA2205787A1 (en) 1997-11-24
CN1167991A (zh) 1997-12-17
KR970076914A (ko) 1997-12-12
JPH1064733A (ja) 1998-03-06

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