EP2383755B1 - Composant à induction - Google Patents

Composant à induction Download PDF

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Publication number
EP2383755B1
EP2383755B1 EP11163227.9A EP11163227A EP2383755B1 EP 2383755 B1 EP2383755 B1 EP 2383755B1 EP 11163227 A EP11163227 A EP 11163227A EP 2383755 B1 EP2383755 B1 EP 2383755B1
Authority
EP
European Patent Office
Prior art keywords
flange
induction component
coil
shielding ring
air gap
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.)
Active
Application number
EP11163227.9A
Other languages
German (de)
English (en)
Other versions
EP2383755A1 (fr
Inventor
Alexander Gerfer
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.)
Wuerth Elektronik Eisos GmbH and Co KG
Original Assignee
Wuerth Elektronik Eisos 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 Wuerth Elektronik Eisos GmbH and Co KG filed Critical Wuerth Elektronik Eisos GmbH and Co KG
Priority to PL11163227T priority Critical patent/PL2383755T3/pl
Publication of EP2383755A1 publication Critical patent/EP2383755A1/fr
Application granted granted Critical
Publication of EP2383755B1 publication Critical patent/EP2383755B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H01F27/363—Electric or magnetic shields or screens made of electrically conductive material
    • 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
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H01F3/14—Constrictions; Gaps, e.g. air-gaps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/722—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H01R13/6658—Structural association with built-in electrical component with built-in electronic circuit on printed circuit board
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H01R13/6666—Structural association with built-in electrical component with built-in electronic circuit with built-in overvoltage protection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/722—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits
    • H01R12/724—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits containing contact members forming a right angle
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits

Definitions

  • the invention relates to an induction component or a body for producing such an induction component.
  • Induction components are often needed in electronics. They contain a ferrite core and at least one coil wound around the ferrite core. The assembly is then surrounded by an outer shield. The induction components are designed so that they can be mounted on a printed circuit board, wherein at the same time an electrical connection is made in the attachment.
  • a two-part housing which has both the shield and the core for the coil. Through lateral openings, the ends of the wire forming the coil are led out.
  • inductor component in which a coil core with two flanges is surrounded by a shield, an intermediate ring of insulating material being arranged between the edge of the identically sized flanges and the shield ring ( DE 10212930 ).
  • induction component with a coil core and a surrounding shielding. Between the flanges of the coil core and the shield, an air gap is present whose size remains constant due to a bonding of the components with each other ( US 2007/0018770 A1 ).
  • the invention is based on the object to provide a way to ensure the correct size of an air gap in an induction component.
  • the invention proposes an induction component with the features mentioned in claim 1. Further developments of the invention are the subject of dependent claims.
  • the inductance component proposed by the invention thus contains a coil body and a screen ring surrounding it and serving for the shielding.
  • the bobbin in turn contains a usually but not necessarily cylindrical core around it the coil is wound.
  • a flange is formed, which has an inner side facing the coil core and an opposite outer side. This flange limits the space in which the coil is arranged.
  • the shield ring which delimits an air gap at at least one point relative to the bobbin, is now positioned relative to the flange by means of positioning means such that the air gap has the intended size and arrangement. The positioning act directly between the shield ring and the flange. An additional plastic housing is no longer required for this positioning or centering of the shield ring.
  • the positioning means between the shield ring and its associated flange will be realized by coordinated geometric design of the shield ring and / or the flange. Since both objects are metallic or metal-like materials, it is proposed by the invention to make the geometric design as simple as possible.
  • the shield ring has an inner step on its end face facing the flange, one leg of which forms a contact surface for resting on the flange.
  • the other leg of the inner step then forms a contact surface for engagement with the outer edge of the flange.
  • the invention may be provided in a development that the bobbin two spaced apart on the spool core flanges, and that the air gap between the peripheral edge of the one Flange and the inner wall surface of the shield ring is formed.
  • the step is provided on the front edge of the shield ring over the entire circumference of the shield ring.
  • the flange against which the positioning means are effective, has an outer contour deviating from a circle.
  • the outer edge of the flange has the shape of a circle with two parallel rectilinear flats.
  • the positioning means between the shield ring and the flange are provided at the flange, which serves for fastening of the induction component to the circuit board.
  • This flange is also larger in the radial direction than the opposite flange.
  • FIG. 1 shown in side view induction component includes a flange 1, the underside 2 is designed and intended for mounting in SMT on a printed circuit board. Above the flange 1, the shield 3 can be seen, which, however, as will be seen below, partially covers the edge of the flange 1.
  • FIG. 2 shows a cross section through the illustrated component along line II-II in FIG. 1 ,
  • the component contains a bobbin 4, which in turn contains a coil core 5.
  • This spool core 5 is cylindrical and has a circular cross-section.
  • the already mentioned flange 1 is formed, which has a flat inner surface 6 and the bottom 2. This flange limits the space available for a coil.
  • the bobbin 4 includes a second flange 7, which projects less far in the radial direction than the lower flange 1.
  • the upper end edge 8 in a plane with the top 9 of the upper Flange 7 is located.
  • an air gap 11 is formed between the edge of the upper flange 7 and the inner side 10 of the shield ring 3, an air gap 11 is formed. This air gap runs around the entire circumference throughout.
  • the lower flange 1 whose underside 2 is designed for fastening to a printed circuit board, contains a through hole 12 which adjoins directly to the outer circumference of the spool core 5. It serves to push through the end of the wire forming the coil, so that it can be soldered on the underside.
  • the shield ring 3 rests on the inside 6 of the lower flange 1. This is clearer from the FIG. 3 out.
  • the shield ring 3 has an inwardly directed step 14 at its lower end edge 13. This step has a first leg 15 extending parallel to the end edge 13 and a second leg 16 running perpendicular thereto and running parallel to the outside. With the first leg 15 of the step 14, the shield ring 3 rests on the inner side 6 of the lower flange 1. The second leg 16 abuts against the outer edge 17 of the lower flange 1. In FIG. 3 the distance between the outer edge 17 and the leg 16 is shown enlarged to illustrate the interaction more clearly.
  • step 14 runs around the entire circumference of the shield ring 3 around, so that the displacement of the shield ring 3 relative to the lower flange 1 is prevented in all directions.
  • the underside 2 is divided into three areas, namely two outer areas with a conductive coating and a middle area between the two coated areas 18, which remains free of coating.
  • the contour of the outer edge 17 of this lower Flange 1 has the shape of two arcs, which are interconnected by two rectilinear mutually parallel sections.
  • the end edge 13 of the shield ring 3 surrounds the outer edge 17 of the lower flange 1 all around.
  • FIG. 5 shows the induction component from below. Again, it can be seen that the lower end edge 13 of the shield ring 3 surrounds the flange 1 everywhere.
  • FIG. 6 now shows a perspective view of the induction component from above.
  • the air gap 11 formed between the flange 7 and the shield ring 3 can be seen. To the correct compliance of this air gap 11, it is in the present invention.
  • a bobbin 24 is shown, in which the bobbin 25 has a flange 11 only at its lower axial end, while it ends in the upper region without a flange.
  • the shield ring 23 in the region of its upper end edge 8 on an inwardly directed all-round leg 27. Between the inner edge of this leg 27 and the outside of the spool core 25, an air gap 21 is also formed, which is maintained in the same manner in its correct size and position as in the previous embodiment. Also serve this purpose formed between the lower flange 1 and the shield ring 23 by the step 14 positioning.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Regulation Of General Use Transformers (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • General Induction Heating (AREA)
  • Soft Magnetic Materials (AREA)

Claims (4)

  1. Composant à induction,
    1.1 avec un corps de bobine (4, 24), qui présente
    1.2 un noyau de bobine (5, 25), destiné à recevoir la bobine et
    1.3 au moins une aile (1, 7) notamment en forme de plaque saillante radialement au-dessus du noyau de bobine cylindrique (5, 25),
    1.4 avec une bague de protection (3) entourant à distance le noyau de bobine (5, 25), qui
    1.5 forme avec le corps de bobine (4, 24) un entrefer (11, 21) à au moins un endroit, ainsi que
    1.6 avec des moyens de positionnement agissant entre l'aile (1) et la bague de protection (3) pour garantir la grandeur correcte de l'entrefer (11, 21),
    dans lequel
    1.7 la bague de protection (3) présente à son côté frontal (13) orienté vers l'aile (1) un épaulement interne (14), dont une branche (15) forme une face d'appui pour l'appui sur l'aile (1) et dont l'autre branche (16) forme une face d'appui pour l'appui sur le bord extérieur (17) de l'aile (1).
  2. Composant à induction selon la revendication 1, dans lequel le corps de bobine (4) présente deux ailes (1, 7) disposées à distance sur le noyau de bobine (5) et un entrefer (11) est formé entre le côté du bord d'une première aile (7) et le côté intérieur (10) de la bague de protection (3).
  3. Composant à induction selon l'une quelconque des revendications précédentes, dans lequel le bord extérieur (17) de l'aile et le contour intérieur de la bague de protection (3) s'écartent d'une forme circulaire.
  4. Composant à induction selon la revendication 2 ou 3, dans lequel, lorsqu'il y a deux ailes (1, 7), une des deux ailes (1, 7) est prévue pour la fixation à une plaquette de circuits imprimés et les moyens de positionnement sont prévus entre la bague de protection (3) et l'aile (1) associée à la plaquette de circuits imprimés et servant pour la fixation.
EP11163227.9A 2010-04-28 2011-04-20 Composant à induction Active EP2383755B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11163227T PL2383755T3 (pl) 2010-04-28 2011-04-20 Element indukcyjny

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010028325A DE102010028325A1 (de) 2010-04-28 2010-04-28 Induktionsbauteil

Publications (2)

Publication Number Publication Date
EP2383755A1 EP2383755A1 (fr) 2011-11-02
EP2383755B1 true EP2383755B1 (fr) 2015-03-18

Family

ID=44276343

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11163227.9A Active EP2383755B1 (fr) 2010-04-28 2011-04-20 Composant à induction

Country Status (15)

Country Link
US (1) US8674801B2 (fr)
EP (1) EP2383755B1 (fr)
JP (1) JP2011233871A (fr)
KR (1) KR101757480B1 (fr)
CN (1) CN102237180B (fr)
AU (1) AU2011201441B2 (fr)
BR (1) BRPI1101734B1 (fr)
CA (1) CA2737021C (fr)
DE (1) DE102010028325A1 (fr)
ES (1) ES2534761T3 (fr)
HK (1) HK1163929A1 (fr)
IL (2) IL212235A (fr)
MX (1) MX2011004388A (fr)
PL (1) PL2383755T3 (fr)
RU (1) RU2569498C2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6398302B2 (ja) * 2014-05-12 2018-10-03 スミダコーポレーション株式会社 コイル部品および電子回路
US20200211760A1 (en) * 2018-12-28 2020-07-02 Texas Instruments Incorporated Molded inductor with magnetic core having mold flow enhancing channels

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU476611A1 (ru) * 1972-12-22 1975-07-05 Предприятие П/Я В-2661 Броневой магнитопривод катушки индуктивности
US4245207A (en) * 1977-05-20 1981-01-13 Toko, Inc. Miniature high frequency coil assembly or transformer
JPH0479404U (fr) * 1990-11-21 1992-07-10
JP3497276B2 (ja) * 1994-07-20 2004-02-16 松下電器産業株式会社 インダクタンス素子とその製造方法
JPH11135331A (ja) 1997-10-30 1999-05-21 Sumida Denki Kk インダクタンス部品
JP2001006939A (ja) * 1999-06-22 2001-01-12 Mitsumi Electric Co Ltd コイル装置
DE10212930A1 (de) 2001-03-23 2002-11-21 Tokin Corp Induktorkomponente mit einem Permanentmagnet für magnetische Vorspannung und Herstellungsverfahren derselben
JP2002313635A (ja) * 2001-04-10 2002-10-25 Mitsumi Electric Co Ltd インダクタのギャップ管理方法
US6847280B2 (en) 2002-06-04 2005-01-25 Bi Technologies Corporation Shielded inductors
JP4372399B2 (ja) 2002-09-10 2009-11-25 東京パーツ工業株式会社 面実装型チョークコイル
JP4317394B2 (ja) * 2003-07-01 2009-08-19 スミダコーポレーション株式会社 面実装インダクタ
JP4292056B2 (ja) * 2003-11-13 2009-07-08 スミダコーポレーション株式会社 インダクタンス素子
JP2006041418A (ja) * 2004-07-30 2006-02-09 Toko Inc 面実装コイル部品
JP4676822B2 (ja) * 2005-06-21 2011-04-27 スミダコーポレーション株式会社 コイル部品
JP2007027461A (ja) * 2005-07-19 2007-02-01 Sumida Corporation コアおよびコアを備えたインダクタ
JP4781223B2 (ja) * 2005-12-22 2011-09-28 スミダコーポレーション株式会社 インダクタンス素子
JP5309682B2 (ja) * 2007-05-25 2013-10-09 スミダコーポレーション株式会社 インダクタンス素子
DE102007063170A1 (de) 2007-12-19 2009-06-25 Würth Elektronik eiSos Gmbh & Co. KG Induktionsbauteil

Also Published As

Publication number Publication date
US20110267163A1 (en) 2011-11-03
MX2011004388A (es) 2011-10-27
JP2011233871A (ja) 2011-11-17
IL212501A0 (en) 2011-07-31
RU2569498C2 (ru) 2015-11-27
US8674801B2 (en) 2014-03-18
PL2383755T3 (pl) 2015-08-31
CN102237180A (zh) 2011-11-09
BRPI1101734B1 (pt) 2019-12-10
CA2737021A1 (fr) 2011-10-28
EP2383755A1 (fr) 2011-11-02
DE102010028325A1 (de) 2011-11-03
ES2534761T3 (es) 2015-04-28
KR101757480B1 (ko) 2017-07-12
AU2011201441B2 (en) 2015-05-28
IL212235A0 (en) 2011-06-30
HK1163929A1 (en) 2012-09-14
CN102237180B (zh) 2016-06-15
AU2011201441A1 (en) 2011-11-17
RU2011115985A (ru) 2012-10-27
BRPI1101734A2 (pt) 2015-07-28
KR20110120243A (ko) 2011-11-03
CA2737021C (fr) 2017-11-21
IL212235A (en) 2014-11-30

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