EP1616340A1 - Ferrite toroidal core for a smd-installation engineering inductive component - Google Patents
Ferrite toroidal core for a smd-installation engineering inductive componentInfo
- Publication number
- EP1616340A1 EP1616340A1 EP04738635A EP04738635A EP1616340A1 EP 1616340 A1 EP1616340 A1 EP 1616340A1 EP 04738635 A EP04738635 A EP 04738635A EP 04738635 A EP04738635 A EP 04738635A EP 1616340 A1 EP1616340 A1 EP 1616340A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ring core
- circuit board
- spoke
- core according
- support
- 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- Withdrawn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
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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
- H01F27/292—Surface mounted devices
-
- 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
- H01F27/255—Magnetic cores made from particles
Definitions
- Toroidal core made of ferrite material for an inductive component intended for SMD assembly technology
- the invention relates to a ring core made of ferrite material for an inductive component provided for SMD assembly technology, the ring core having a smaller thickness in the axial direction than in the radial direction having at least one flat contact surface on its outer narrow side with which it rests on a PCB is attachable.
- the carrier plate can then in turn be mounted on a circuit board. It has now been shown that when assembling such ring cores, which have a smaller thickness in the axial direction than in the radial direction, ie generally a significantly greater height than thickness, it is difficult to place the ring core on a flat mounting surface in such a way that it does not tip over until it is finally attached. Therefore, the interposition of a carrier plate is provided in the known ring core.
- the invention is based on the object of designing a ring core with the features mentioned at the outset in such a way that a good positional stability is ensured when it is placed directly on a printed circuit board, so that the ring core does not tend to tilt and the additional mounting on a carrier plate can be omitted.
- At least one support foot of a predetermined length standing perpendicular to the toroidal plane is integrally formed on the part of the ring core which faces the circuit board when the circuit board is placed on the circuit board and which at least overlaps on its underside has a part of its length extending, parallel to the flat support surface, which lies in or above the plane of the flat support surface, as claimed in claim 1.
- the basic idea of the invention is to arrange one or more support feet on the opposite lower part of the ring core when mounting the printed circuit board, that is, a plane on which the central axis of the opening of the ring core is perpendicular, which are arranged in one piece on the ring core are formed and each have on their underside running parallel to the flat support surface of the ring core support surfaces. These support surfaces can be in or slightly above the level of the flat support surface. These support feet prevent the ring core from tipping over when it is placed on the circuit board.
- the ring core according to the invention which has the shape of an essentially rectangular frame core
- two support feet are formed on the base bar of the ring core, which is opposite the printed circuit board, on each of the two side surfaces, which have a predetermined distance from one another, so that the Base bar of the ring core together with the support feet seen from above has the shape of an H.
- the roof beam of the ring core which runs parallel to the base beam, can have a surface section on its upper outer surface which has a flat surface and serves as a suction surface during assembly.
- FIG. 1 shows a ring core designed as a frame core in a side view in the direction of the central axis of the ring core opening;
- FIG. 2 shows the ring core according to FIG. 1 in a side view on the narrow side;
- FIG. 3 shows the ring core according to FIGS. 1 and 2 in a view from above;
- FIG. 5 shows the ring core according to FIGS. 1 to 4 in a view from below;
- FIG. 6 shows an inductive component constructed with the ring core according to FIGS. 1 to 5 in a view analogous to FIG. 1;
- FIG. 7 shows the component according to FIG. 6 in a view analogous to FIG. 2.
- 1 to 5 show a ring core 1 designed as a rectangular frame core, in which (see FIG. 3) the central axis of the opening of the ring core is designated by X and the toroidal plane is designated by E.
- the ring core 1 has a base bar 1.1 which, when placed on a circuit board P (see FIG. 6), lies opposite the circuit board and forms the lower part of the ring core, as well as two side bars 1.2 and 1.3 and a roof bar 1.4 running parallel to the base bar 1.1.
- the roof beam 1.4 has on its upper side a flat surface 1.41 serving as a suction surface.
- the base bar 1.1 has at both ends it outwardly extending integrally formed lugs 2.1 and 2.2, on the undersides of which flat support surfaces 2.11 and 2.21 are arranged in the outer region, with which the ring core can be placed on the circuit board. Between these contact surfaces 2.11 and 2.21 and the ends of the grand beam 1.1, the areas in which the lower surface 2.12 and 2.22 of the projections lie above the contact surfaces 2.11 and 2.21 are arranged on the underside of the extensions 2.1 and 2.2. This is explained in more detail below.
- Two supporting feet 3.1, 3.2, 3.3 and 3.4 perpendicular to the toroidal plane E are integrally formed in one piece on the side surfaces of the base beam 1.1 in the area of the side beams 1.2 and 1.3 attached to the grand beam 1.1
- Printed circuit board P facing side provided with support surfaces 3.11, 3.21, 3.31 and 3.41 running parallel to the flat contact surfaces 2.11 and 2.21. These support surfaces can either lie in the same plane as the contact surfaces 2.11 and 2.21, or they can lie slightly above this plane.
- the support feet 3.1 and 3.2 or 3.3 and 3.4 are at a predetermined equal distance from one another, so that, as can be seen from FIGS. 3 and 5, the base bar together with the support feet has the outline of an H.
- the ring core is secured against tipping on both sides when placed on a printed circuit board.
- FIGS. 6 and 7 show an inductive component constructed with the ring core according to FIGS. 1 to 5.
- a wire winding 4 is wound around the ring core 1 in such a way that the majority of the turns of the winding 4, that is to say the winding portions 4.1 and 4.2, on the two side bars 1.2 and
- the winding 4 is then connected to the corresponding conductor tracks by soldering.
- the support feet 3.1 to 3.4 have inclined surfaces sloping outwards on their upper side, as can be seen from FIG. 4 using the example of the inclined surfaces 3.42 and 3.22 on the support feet 3.4 and 3.2.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20309843U DE20309843U1 (en) | 2003-06-26 | 2003-06-26 | Toroidal core made of ferrite material for an inductive component intended for SMD assembly technology |
PCT/DE2004/001182 WO2005008696A1 (en) | 2003-06-26 | 2004-06-08 | Ferrite toroidal core for a smd-installation engineering inductive component |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1616340A1 true EP1616340A1 (en) | 2006-01-18 |
Family
ID=27816526
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04738635A Withdrawn EP1616340A1 (en) | 2003-06-26 | 2004-06-08 | Ferrite toroidal core for a smd-installation engineering inductive component |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1616340A1 (en) |
DE (1) | DE20309843U1 (en) |
WO (1) | WO2005008696A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005041131B4 (en) * | 2005-08-30 | 2008-01-31 | Phoenix Contact Gmbh & Co. Kg | exchangers |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4967175A (en) * | 1989-11-13 | 1990-10-30 | Tektronix, Inc. | Inductor and carrier suitable for attaching to a hybrid substrate or the like |
US5212345A (en) * | 1992-01-24 | 1993-05-18 | Pulse Engineering, Inc. | Self leaded surface mounted coplanar header |
DE9313131U1 (en) * | 1993-09-01 | 1993-12-09 | Vogt Electronic Ag | Support device for an inductive SMD component |
DE19812836A1 (en) * | 1998-03-24 | 1999-09-30 | Pemetzrieder Neosid | Inductive miniature component for SMD assembly |
JP2000200721A (en) * | 1999-01-07 | 2000-07-18 | Fuji Elelctrochem Co Ltd | Coil component |
US6292081B1 (en) * | 1999-10-28 | 2001-09-18 | Scientific-Atlanta, Inc. | Tunable surface mount toroidal inductor |
DE19956828C2 (en) * | 1999-11-25 | 2003-02-13 | Vogt Electronic Ag | Modified toroidal core for use in an electromagnetic component |
-
2003
- 2003-06-26 DE DE20309843U patent/DE20309843U1/en not_active Expired - Lifetime
-
2004
- 2004-06-08 EP EP04738635A patent/EP1616340A1/en not_active Withdrawn
- 2004-06-08 WO PCT/DE2004/001182 patent/WO2005008696A1/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO2005008696A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE20309843U1 (en) | 2003-09-04 |
WO2005008696A1 (en) | 2005-01-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20051118 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL HR LT LV MK |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: NEOSID PEMETZRIEDER GMBH & CO. KG |
|
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20060624 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: BEUCKMANN, THEO, DIPL.-ING. Inventor name: SWOBODA, EUGENIUSZ |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: BEUCKMANN, THEO, DIPL.-PHYS Inventor name: SWOBODA, EUGENIUSZ |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: BEUCKMANN, THEO, DIPL.-PHYS. Inventor name: SWOBODA, EUGENIUSZ |