EP0200014B2 - Procédé de réalisation de contacts inarrachables pour des fils isolés par du vernis - Google Patents

Procédé de réalisation de contacts inarrachables pour des fils isolés par du vernis Download PDF

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Publication number
EP0200014B2
EP0200014B2 EP86104429A EP86104429A EP0200014B2 EP 0200014 B2 EP0200014 B2 EP 0200014B2 EP 86104429 A EP86104429 A EP 86104429A EP 86104429 A EP86104429 A EP 86104429A EP 0200014 B2 EP0200014 B2 EP 0200014B2
Authority
EP
European Patent Office
Prior art keywords
wire
break
welding
wires
varnish
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.)
Expired - Lifetime
Application number
EP86104429A
Other languages
German (de)
English (en)
Other versions
EP0200014B1 (fr
EP0200014A1 (fr
Inventor
Helmut Dipl.-Ing. Moll (Fh)
Gerd Wiegel
Josef Schindler
Wilfried Dipl.-Ing. Scherer (Fh)
Kurt Dipl.-Phys. Marth
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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Filing date
Publication date
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Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP0200014A1 publication Critical patent/EP0200014A1/fr
Publication of EP0200014B1 publication Critical patent/EP0200014B1/fr
Application granted granted Critical
Publication of EP0200014B2 publication Critical patent/EP0200014B2/fr
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
    • 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
    • H01F41/10—Connecting leads to windings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/02—Soldered or welded connections
    • H01R4/026—Soldered or welded connections comprising means for eliminating an insulative layer prior to soldering or welding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
    • H01R43/0207—Ultrasonic-, H.F.-, cold- or impact welding

Definitions

  • the invention relates to a contacting method of enamelled wire with a diameter of less than 100 microns on vertically aligned parts of plate-shaped terminal lugs in wire-wound ceramic, plastic or ferrite cores, which are designed as choke chips.
  • the induction coils used are becoming smaller and smaller as the miniaturization progresses. This means that the winding wires used have an ever smaller diameter, which makes contacting the coil connections more difficult.
  • the enamel-insulated coil connections can have a diameter in the range from 30 to 100 ⁇ m (0.03 - 0.1 mm).
  • such a miniaturized HF choke in chip design is proposed, in which one or more layers of coated, insulated wire must be contacted on plate-shaped contact elements.
  • lacquer-insulated coil connections have been contacted by manual, mechanized or even fully automated soldering. Temperatures of approx. 500 ° C are necessary especially for soldering such high temperature resistant enamelled wires. The heat radiation can damage the materials in the immediate soldering area.
  • Ultrasonic welding can advantageously be used for contacting, the lacquer insulation layer being equally broken up and the welding effect being achieved due to the mechanical effect of the ultrasound.
  • problems arise with diameters of enamelled wires less than 0.4 mm, since the wire weakens at the connection point due to the deformation. Since the mechanical requirements cannot generally be maintained, an additional cover plate has to be welded on to improve the mechanical strength. The latter is described specifically for laser welding in DE-OS 33 07 773. In the manufacture of RF choke coils, which are either manufactured with connecting wire or more recently with connecting lugs as so-called RF choke chips, this would mean an additional effort, since the cover plates have to be fed in before welding.
  • a so-called socket strip for electrical connectors of ribbon cables is known, in which the ends of the wires of the ribbon cable are connected to the respective contact springs by ultrasonic welding.
  • the individual wires of the ribbon cable should be able to be brought to the contact springs without being stripped and welded through the insulation.
  • the insulated cable end is placed in a trough-shaped bed and the insulating material is squeezed away by the rubbing process caused by ultrasound.
  • DE-A-27 57 038 specifies the ultrasonic soldering of such lines, in which the wire end is provided beforehand with a metallic solder.
  • the object of the invention is to create a contacting method suitable for microinductivities.
  • the object is achieved in a method of the type mentioned with the features a) to c) of the claim. This method makes it possible to contact microinductivities in an integrated manufacturing process.
  • the advantages of ultrasonic welding of enamelled wires such as reliable contacting and the low temperature load, are used and the previous disadvantage of low strength is also compensated for by the application of the adhesive.
  • Such adhesives are easy to handle and can be applied as drops to the weld. After curing, the adhesive is mechanically strong and in particular also resistant to changes in temperature. The volume of the drop of adhesive can be selected so that the entire deformation site is enclosed. As a result, the strength of the contact is greater than the wire strength
  • 1 means a metallic base, for example a contact element, on which a paint-insulated wire 2 is to be contacted.
  • Ultrasound welding can advantageously be used for this purpose, for which an ultrasound sonotrode with 10 and associated ultrasound anvil with 11 are indicated.
  • the insulation layers are broken up by the mechanical effect and the metallic parts are contacted by friction welding with simultaneous deformation.
  • a one-component adhesive is used as the adhesive. It is important for the intended use that the adhesive substance is thixotropic, i.e. dimensionally stable, is and hardens quickly. In automated production, a drop of the adhesive can then be applied to the welding point directly after welding, which hardens after passing through UV light after a few seconds, so that a shape 4 results which surrounds the deformed area of the wire 1.
  • an RF choke is designated 20.
  • Such chokes usually consist of a core 21, which can be made of ceramic, plastic or ferrite, with a single-layer or multi-layer winding 24 made of enamelled, insulated round wire.
  • a core 21 which can be made of ceramic, plastic or ferrite, with a single-layer or multi-layer winding 24 made of enamelled, insulated round wire.
  • the core 21 has end faces 22 with recesses 23, into which connection tabs 25 with a platelet surface are introduced on the front and rear sides.
  • the connecting lugs 25 are bent at their free part so that they can be plugged onto printed circuit boards or the like.
  • connection lug 25 must be contacted with the winding wire 24:
  • the winding wire 24 is placed diagonally around the connection lug 25 and the end 26 of the winding wire 24 is welded on using ultrasound in the manner described above.
  • a drop of the specified adhesive is then applied to the surface of the connecting lug 25.
  • An approximately wart-shaped area 27 is formed, which covers the entire deformation area of the ultrasonic welding. After the adhesive has hardened, a mechanically stable connection is achieved.
  • weld is also protected against climatic and corrosive influences.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Claims (1)

1. Procédé pour établir le contact, résistant à l'arrachement, de fils (24) d'enroulement isolés par du vernis, et ayant des diamètres plus petits que 100 µm, sur des parties disposées verticalement de languettes (25) de raccordement en forme de plaquettes, pour des noyaux (21) en céramique, en matière plastique ou en ferrite, autour desquels est enroulé le fil, et qui sont formés en tant que microbobines (20) de choc hautes fréquences, ayant les caractéristiques suivantes :
a) on applique les extrémités (26) de fil, qui ne sont pas dénudées, sur les languettes (25) de raccordement,
b) on soude par ultrasons chaque extrémité (26) de fil en rompant la couche isolante et en déformant sa section transversale, sur la partie de la languette (25) de raccordement disposée verticalement,
c) on entoure la zone de jonction d'une goutte (27) de colle organique ou minérale à durcissement rapide, qui a des propriétés thixotro- pes.
EP86104429A 1985-04-15 1986-04-01 Procédé de réalisation de contacts inarrachables pour des fils isolés par du vernis Expired - Lifetime EP0200014B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3513435 1985-04-15
DE19853513435 DE3513435A1 (de) 1985-04-15 1985-04-15 Verfahren zum abreisssicheren kontaktieren lackisolierter draehte, insbesondere zur anwendung bei elektronischen bauteilen

Publications (3)

Publication Number Publication Date
EP0200014A1 EP0200014A1 (fr) 1986-11-05
EP0200014B1 EP0200014B1 (fr) 1990-03-14
EP0200014B2 true EP0200014B2 (fr) 1994-08-24

Family

ID=6268048

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86104429A Expired - Lifetime EP0200014B2 (fr) 1985-04-15 1986-04-01 Procédé de réalisation de contacts inarrachables pour des fils isolés par du vernis

Country Status (3)

Country Link
EP (1) EP0200014B2 (fr)
JP (1) JPH0815126B2 (fr)
DE (2) DE3513435A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3835818C3 (de) * 1988-10-21 1996-02-08 Stapla Ultraschalltechnik Gmbh Verfahren und Vorrichtung zum Verbinden von Ankerwicklungsdrähten mit den Lamellen eines Hakenkollektors
DE4039527C1 (fr) * 1990-12-11 1992-06-25 Siemens Matsushita Components Gmbh & Co. Kg, 8000 Muenchen, De
DE4313608A1 (de) * 1993-04-26 1994-10-27 Siemens Ag Verfahren und Vorrichtung zum Kontaktieren von Wickelgütern an Anschlußelementen
DE4432740A1 (de) 1994-09-14 1996-03-21 Siemens Matsushita Components Chip-Induktivität
JP3464444B2 (ja) 2000-10-30 2003-11-10 三菱電機株式会社 電磁機器

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3271717A (en) * 1961-06-05 1966-09-06 Vincent C Gilbert Electrical coil construction employing pressure sensitive adhesive
DE1903006A1 (de) * 1969-01-22 1970-08-06 Siemens Ag Anschluss von Wickelspulen
US3590207A (en) * 1969-06-16 1971-06-29 Gen Electric Method of joining wires of different diameters
JPS5287687A (en) * 1976-01-16 1977-07-21 Hitachi Ltd Method for connecting enameled wire to terminal
DE2641508C2 (de) * 1976-09-15 1978-09-21 Siemens Ag, 1000 Berlin Und 8000 Muenchen Vorrichtung zum Verbinden von unverdichteten, hochflexiblen, blanken oder isolierten Litzen aus Kupfer mit metallischen Trägern
DE2728914A1 (de) * 1977-06-27 1979-01-04 Hans Dipl Ing Rilling Buchsenleiste fuer elektrische steckverbinder von flachbandkabeln
JPS5475061A (en) * 1977-11-26 1979-06-15 Citizen Watch Co Ltd Structure of protective portion of coil terminal and its preparation
DE2757038A1 (de) * 1977-12-21 1979-07-05 Hans Dipl Ing Rilling Buchsenleiste fuer elektrische steckverbinder von flachbandkabeln
JPS571213A (en) * 1980-06-03 1982-01-06 Omron Tateisi Electronics Co Treating method for terminal of coil
NL188772C (nl) * 1981-07-09 1992-09-16 Tdk Corp Inductantie.
JPS59198711A (ja) * 1983-04-25 1984-11-10 Tamura Seisakusho Co Ltd コイルの端子固定方法

Also Published As

Publication number Publication date
JPS61240617A (ja) 1986-10-25
EP0200014B1 (fr) 1990-03-14
JPH0815126B2 (ja) 1996-02-14
DE3513435A1 (de) 1986-10-16
DE3669624D1 (de) 1990-04-19
EP0200014A1 (fr) 1986-11-05

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