Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
  • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
  • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
  • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
  • H01F41/06—Coil winding
  • H01F41/08—Winding conductors onto closed formers or cores, e.g. threading conductors through toroidal 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
  • H01F27/28—Coils; Windings; Conductive connections
  • H01F27/2895—Windings disposed upon ring 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
  • H01F27/02—Casings
  • H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing arrangements
• • 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
  • H01F27/2847—Sheets; Strips
• • 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

Definitions

• the invention relates to an inductive circuit element with a toroidal core and a composite of U-shaped bracket winding material.
• the invention relates to a method for mounting a circuit element with a toroidal core and a composite of U-shaped hoop winding.
• DE3720739 shows a substantially O-shaped core, which is held on the board by soldered winding stirrups which serve to form two windings distributed on both legs.
• No. 4,878,291 A discloses a method for assembling an inductive circuit element, the winding material being composed of U-shaped and S-shaped stirrups.
• the distance between adjacent brackets can easily change in this arrangement due to external influences during assembly or during operation, which has a negative effect on the constancy of elektr ⁇ magnetic parameters.
• a method specified in US Pat. No. 3,638,156 A describes the composition of a winding material applied to a ceramic base body. It is a U-shaped
• Base body provided with U-shaped conductor tracks, in which a cylindrical core is inserted, wherein the adjacent ends of the tracks are connected diagonally with sheet-metal brackets.
• a ceramic base body is difficult to manufacture for an annular core, which is why the solution for toroidal cores is not considered.
• the invention is therefore based on the object of specifying an inductive switching element with a toroidal core and a composite of U-shaped bracket winding, which is easy to manufacture and has constant electrical-magnetic parameters. Furthermore, a method for easy installation should be specified.
• this object is achieved with an inductive circuit element of the type mentioned in at the first bracket and second bracket are provided and the first bracket so arranged the second bracket opposite and are directly connected to each other that they enclose the toroidal core as comprehensive turns and wherein the brackets are formed from sheet metal and have at their back a web, with all the first bracket on a first carrier board and all second bracket are mounted on a second carrier board.
• the circuit element according to the invention has the advantage that the turns are constructed solely of brackets, which can be adapted in their dimension to the thermal loads. Furthermore, it is achieved by stable mounting on the carrier boards with constant distances between the individual windings that the electrical magnetic parameters of structurally identical circuit elements have smaller variations than conventional designs.
• a particularly favorable Feld bedring is achieved with the fact that the bracket made of silvered beryllium, copper or bronze. This results in a uniform distribution of the current and the thermal load.
• Bracket is given.
• the circuit elements can be integrated directly into the board by the contact is given by traces that lead directly to the solder joints for attaching the winding ends forming bracket.
• the bracket on the leg ends have contact surfaces where they are soldered together or that the bracket at one leg end a male plug and at the other leg end male plug and the strap are connected plugged. This results in a simple assembly of the Wicklungsguts.
• first bracket and the second bracket are made identical. As a result, all the stirrups can use the same tools and production steps for the production.
• the carrier boards are made of a ceramic material, so that the resulting heat can be better dissipated. Another advantage is the low deformation when heating the carrier boards.
• the assembly of the circuit element according to the invention can be particularly easy to perform by on a first
• Supporting plate U-shaped bracket are rotationally symmetrical and in the resulting first half of the winding material, a toroidal core is inserted electrically insulated, which is spanned with U-shaped second bracket in such a way that each juxtaposed first bracket are connected by second bracket and so complete turns arise.
• Assembly is particularly favorable when the second bracket spanning the toroidal core is preassembled on a common second carrier board. That can be like with the
• the placement of the group of second bracket on the group of the first bracket can then be done by soldering or plugging.
• Fig. 1 a schematic representation of a circuit element according to the invention with plugged connected bracket and a winding
• Fig. 2 a schematic representation of a circuit element according to the invention with soldered connected bracket and two windings
• FIG. 3 An outline of a clip for plugged connection
• Fig. 4 side elevation of a clip for plugged connection
• Fig. 5 plan view of a plug-in connector
• Fig. 6 View A of a plug-in connector as indicated in fig
• Fig. 1 shows an inventive switching element with bracket, which are plugged together, wherein a variant is selected with a winding encircling the entire ring core.
• the base used is a carrier board 1 made of ceramic.
• the first bracket 2 with the apparent from Fig. 3 web 10 are rotationally symmetrical soldered to the axis of symmetry of the toroidal core 3, wherein the individual solder joints with each other have no electrically conductive connection allowed to.
• the distance between the individual first bracket 2 is constant.
• first bracket 2 of the toroidal core 3 is inserted electrically isolated. This is achieved by the fact that
• Toroidal core 3 is isolated before insertion with a dielectric material.
• the toroidal core 3 spanning second bracket 4 connect two juxtaposed first bracket 2 in such a way that complete windings are given.
• the winding formed from the bracket is interrupted at one point by the absence of a second bracket.
• the first bracket 6 and 7 to winding ends which can be contacted via printed conductors 8 and 9 on the carrier board 1 with a circuit.
• the group of the second bracket 4 is also soldered to a common carrier board 5, wherein also here there is no electrically conductive connection between the solder joints.
• a common carrier board 5 wherein also here there is no electrically conductive connection between the solder joints.
• Fig. 2 also shows an inventive
• Circuit element in which case the variant of each other soldered bracket 2 and 4 is shown. Due to the absence of two second bracket 4, the toroidal core 3 is enclosed by two windings whose winding ends form the first brackets 6 and 7. These can be contacted via the tracks 8 and 9 on the carrier board 1 with a circuit.
• the bracket shown in FIGS. 3 to 6 is the plug-in variant made of sheet metal.
• Fig. 3 shows the U-shape of the bracket, which has a beveled web 10 at the back.
• the first leg end 11 is designed as a plug female, wherein the leg is slotted in the middle and the resulting two leg segments as shown in FIG. 6 are spread open against each other, so that they serve as a clamping receptacle for the second leg end 12.
• This second leg end 12 is designed as a straight sheet segment with rounded edges.
• Fig. 5 shows the slight S-shape of the bracket. The extent of the bend is dependent on the pitch of the winding and causes the mating plug female and male plug of the brackets to be connected to each other 2 and 4 lie in a common plane.

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• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Manufacturing & Machinery (AREA)
• Coils Or Transformers For Communication (AREA)
• Burglar Alarm Systems (AREA)
• Filters And Equalizers (AREA)

Applications Claiming Priority (2)

Publications (3)

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ID=35744893

Family Applications (1)

Country Status (4)

Families Citing this family (6)

Family Cites Families (6)

• 2004
  • 2004-11-19 AT AT0194804A patent/AT501073B1/de not_active IP Right Cessation
• 2005
  • 2005-11-14 DE DE502005003510T patent/DE502005003510D1/de active Active
  • 2005-11-14 WO PCT/EP2005/055953 patent/WO2006053862A1/fr active IP Right Grant
  • 2005-11-14 AT AT05815657T patent/ATE390699T1/de active
  • 2005-11-14 EP EP05815657A patent/EP1812938B8/fr not_active Expired - Fee Related

Non-Patent Citations (1)

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