WO1999031680A1 - Composant inductif - Google Patents

Composant inductif Download PDF

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Publication number
WO1999031680A1
WO1999031680A1 PCT/EP1998/008178 EP9808178W WO9931680A1 WO 1999031680 A1 WO1999031680 A1 WO 1999031680A1 EP 9808178 W EP9808178 W EP 9808178W WO 9931680 A1 WO9931680 A1 WO 9931680A1
Authority
WO
WIPO (PCT)
Prior art keywords
inductive component
core
circuit board
insulating body
printed circuit
Prior art date
Application number
PCT/EP1998/008178
Other languages
German (de)
English (en)
Inventor
Wilhelm Spiess
Original Assignee
Schiller Elektronik Gmbh
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 Schiller Elektronik Gmbh filed Critical Schiller Elektronik Gmbh
Priority to AU20533/99A priority Critical patent/AU2053399A/en
Publication of WO1999031680A1 publication Critical patent/WO1999031680A1/fr

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
    • H01F5/00—Coils
    • H01F5/04—Arrangements of electric connections to coils, e.g. leads

Definitions

  • the invention relates to an inductive component according to the preamble of claim 1.
  • the winding wires for power applications have a correspondingly large cross section.
  • the winding ends can then no longer be fixed as usual on connecting pins of the coil former carrying the windings. If the assembly of such inductive components on printed circuit boards is provided, the
  • the ends of the winding are then soldered directly into the eyes of the printed circuit board without using coil formers.
  • the circuit board is assembled in such a way that the circuit board is first pre-equipped with other components, preferably by means of automatic placement machines, these components holding themselves (SMD technology), and then brought over a soldering bath in which a soldering wave soldered these components .
  • the circuit boards are then refilled with the inductive components in a further work step, and finally the winding ends are soldered by hand into the soldering pads provided on the circuit board. This assembly and soldering process is therefore time-consuming and expensive due to the manual work.
  • an adapter plate for electrical coils which is suitable for contacting coil soldering pins arranged in a predetermined pitch with a printed circuit board, the bores of which have different pitches.
  • the adapter plate carries mutually electrically insulated conductor tracks, the number of which corresponds at least to the number of coil soldering pins. The conductor tracks are guided in this way and the adapter plate is broken through in sections of the conductor tracks in such a way that different grid dimensions of coil former pin arrangements and printed circuit board holes can be adapted to one another.
  • BESTATIGUGNGSOPIE Member with its adapter plate is not intended for installation in printed circuit boards.
  • inductive components are also known in which the coil body has strip-shaped feet or contact feet. These feet are intended for mounting on a printed circuit board, the winding ends being fastened to connecting pieces embedded in the feet.
  • these known inductive components can be inserted into a printed circuit board and soldered into the printed circuit board together with the other components of the printed circuit board in a single automatic soldering process, this requires coil formers and two connections or soldering points per connection, which have a relatively high contact resistance .
  • EP-A1-03999779 and DE-A1-3628563 disclose inductive components which each have coil formers and which can be snapped into springs attached to the circuit board. This allows automatic assembly of the circuit board, but the winding ends must be sorted and soldered by hand.
  • the object of the invention is to provide an inductive component of the type mentioned in the preamble of claim 1, which does not require a bobbin, is accessible to an automatic circuit board assembly and can be soldered to the other components of the circuit board in a single soldering process and with which therefore assembly times and manual work can be reduced.
  • the insulating body is preferably a simple plastic injection-molded part and can be used in various types of inductive components which are equipped, for example, with known, so-called RM, PM, EFD or similar cores.
  • the insulating body is in the form of a strip, the side of which facing the printed circuit board is flush with the side of the transformer core facing the printed circuit board. Therefore, these surfaces form a flat contact surface on the circuit board.
  • the bushings are bores.
  • the wires are therefore completely enclosed.
  • the walls of the insulating body surrounding the bores can be slotted so that they have a spring effect on the winding wires and thus fix these wires.
  • the bores run conically, the narrower diameter of the bores lying towards the printed circuit board.
  • the insulating body is provided with means for clipping onto the transformer core.
  • the insulating body can thus be attached to the core easily and without any special effort.
  • Core is equipped, which has two side walls arranged at right angles to each other on two opposite sides, the insulating body according to an expedient, further embodiment of the invention has two end parts arranged at right angles to each other, each carrying two ribs running in the longitudinal direction of the core and enclosing the core side.
  • the inner rib is designed as a holding web for the core of the inductive component. This increases the holding force of the core on the circuit board.
  • FIG. 1 is a plan view of an RM core and two insulating bodies attached to it from below,
  • FIG. 2 is a side view of the arrangement shown in FIG. 1,
  • Fig. 3 is a plan view of the insulating body shown in Fig. 1 above and 4, 5 and 6 are partially sectioned side views of the insulating body shown in FIG. 3.
  • the core 1 and 2 show a so-called RM core 1 of an inductive component and two insulating bodies 2, 2 ' attached to this core.
  • the core 1 consists of a jacket 3 closed at the top and bottom, the jacket cover being formed by an insertable yoke, and a cylindrical body 4 arranged in the center and connected to the jacket bottom. Wire windings (not shown) can be pushed onto this body. The winding space 5 for these wire windings is indicated in Fig. 2.
  • the jacket 3 is open on two opposite sides. On the open sides, the core 1 has two side walls 6, 7 and 8, 9 arranged perpendicular to each other. The insulating bodies 2, 2 ' engage in these side walls.
  • the core 1 with its core bottom outer surface 10 and the insulating body 2, 2 'with its bottom surfaces 1 1 are placed on a printed circuit board 12 which, in a manner not shown, has a printed circuit for the connection to the inductive component and further components.
  • the surfaces 10, 1 1 are therefore flush with one another.
  • the insulating body 2 (and likewise the similarly designed insulating body 2 ' , which will not be described further) has a strip shape and has four larger bores, such as the bores 13, and two smaller bores 1 4 Mistake .
  • the bores 1 3 are arranged in an extension of the side walls 6, 7 approximately on an arc of a circle so as not to impede the windings, while the bores 14 are in externally arranged approaches of the insulating body 2. All of these bores are preferably conical, the narrower diameter of the bores being arranged toward the printed circuit board 12.
  • the conical formation of the holes can be seen from FIGS. 4 and 5, the wall surrounding the lower bore in FIG. 4 and the wall surrounding the second lowermost bore 13 in FIG. 5 being shown in section.
  • the insulating body 2 has end parts 15, 16 (FIG. 3) which are arranged at right angles to one another and each have a long rib 17 or 18 and a short rib 19 or 20. These ribs surround the core side walls 6, 7, the short ribs 19, 20 resting on the inner core bottom surface. The inner, short ribs 19, 20 are therefore designed as retaining webs for the core 1 of the inductive component.
  • the insulating bodies are preferably plastic injection molded parts which are deformable to the extent that they can be clipped onto the core 1 without any particular effort.
  • winding ends of only partially shown winding wires 21-24 are guided through the conical bores 13, 14 of the insulating body 2 and through soldering eyes of the printed circuit board 12, these wires being fixed in these bores. These winding ends can then be soldered in the eyes by soldering, such as solder 25, with the same
  • the insulating bodies can have vertical slots which are each connected to the bushings.
  • the insulators can then be removed from the printed circuit board again after the soldering, the wires being guided through these slots, and are available for other inductive components.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Thermistors And Varistors (AREA)

Abstract

Selon l'invention, il est prévu de fixer sur un composant inductif (translateur, bobine d'inductance), au moins un corps isolant (2, 2') muni de traversées (13, 14), de manière que les extrémités de fil d'enroulements du composant soient disposées dans les traversées. Ces extrémités de fils peuvent ainsi être soudées avec les autres composants dans une carte de circuit, en une seule opération de soudage (onde de soudage).
PCT/EP1998/008178 1997-12-15 1998-12-14 Composant inductif WO1999031680A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU20533/99A AU2053399A (en) 1997-12-15 1998-12-14 Inductive component

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29722005.5 1997-12-15
DE29722005U DE29722005U1 (de) 1997-12-15 1997-12-15 Induktives Bauglied

Publications (1)

Publication Number Publication Date
WO1999031680A1 true WO1999031680A1 (fr) 1999-06-24

Family

ID=8049894

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/008178 WO1999031680A1 (fr) 1997-12-15 1998-12-14 Composant inductif

Country Status (3)

Country Link
AU (1) AU2053399A (fr)
DE (1) DE29722005U1 (fr)
WO (1) WO1999031680A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1085536A1 (fr) * 1999-09-13 2001-03-21 Mannesmann VDO AG Transformateur

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2489036A1 (fr) * 1980-08-25 1982-02-26 Siemens Ag Transformateur
DE3240873A1 (de) * 1982-11-05 1984-05-10 Blaupunkt-Werke Gmbh, 3200 Hildesheim Drahthalterung fuer eine leiterplatte
EP0264840A2 (fr) * 1986-10-23 1988-04-27 Klaus Lorenzen Méthode et dispositif pour monter des composants électriques sur une plaque à circuit imprimé
US4937546A (en) * 1989-03-28 1990-06-26 Salom Electric Co., Ltd. Ring-core transformer
EP0435461A2 (fr) * 1989-12-29 1991-07-03 AT&T Corp. Composant magnétique de faible profil ayant plusieurs enroulements à couches
EP0773564A1 (fr) * 1995-11-07 1997-05-14 Peter Weiner Corps de bobine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2489036A1 (fr) * 1980-08-25 1982-02-26 Siemens Ag Transformateur
DE3240873A1 (de) * 1982-11-05 1984-05-10 Blaupunkt-Werke Gmbh, 3200 Hildesheim Drahthalterung fuer eine leiterplatte
EP0264840A2 (fr) * 1986-10-23 1988-04-27 Klaus Lorenzen Méthode et dispositif pour monter des composants électriques sur une plaque à circuit imprimé
US4937546A (en) * 1989-03-28 1990-06-26 Salom Electric Co., Ltd. Ring-core transformer
EP0435461A2 (fr) * 1989-12-29 1991-07-03 AT&T Corp. Composant magnétique de faible profil ayant plusieurs enroulements à couches
EP0773564A1 (fr) * 1995-11-07 1997-05-14 Peter Weiner Corps de bobine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1085536A1 (fr) * 1999-09-13 2001-03-21 Mannesmann VDO AG Transformateur

Also Published As

Publication number Publication date
DE29722005U1 (de) 1998-02-12
AU2053399A (en) 1999-07-05

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