EP0027893B1 - Procédé et dispositif pour fixer des pièces de contact sur des supports de contact - Google Patents

Procédé et dispositif pour fixer des pièces de contact sur des supports de contact Download PDF

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Publication number
EP0027893B1
EP0027893B1 EP80105704A EP80105704A EP0027893B1 EP 0027893 B1 EP0027893 B1 EP 0027893B1 EP 80105704 A EP80105704 A EP 80105704A EP 80105704 A EP80105704 A EP 80105704A EP 0027893 B1 EP0027893 B1 EP 0027893B1
Authority
EP
European Patent Office
Prior art keywords
contact
embossing
contact element
guide sleeve
element blank
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
Application number
EP80105704A
Other languages
German (de)
English (en)
Other versions
EP0027893A1 (fr
Inventor
Manfred Dr. Ing. Lindmayer
Friedrich Weidert
Friedrich-Wilhelm Ing. Grad. Niebuhr
Lothar W. Nuss
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.)
NIEBUHR Mikroschweisstechnik GmbH
Evonik Operations GmbH
Original Assignee
NIEBUHR Mikroschweisstechnik GmbH
Degussa 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6082523&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0027893(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by NIEBUHR Mikroschweisstechnik GmbH, Degussa GmbH filed Critical NIEBUHR Mikroschweisstechnik GmbH
Priority to AT80105704T priority Critical patent/ATE1794T1/de
Publication of EP0027893A1 publication Critical patent/EP0027893A1/fr
Application granted granted Critical
Publication of EP0027893B1 publication Critical patent/EP0027893B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/041—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion

Definitions

  • the invention relates to a method and a device for applying contact bodies to contact carriers under the simultaneous action of pressure and sound by pressing a contact body blank onto the contact carrier with an embossing tool, consisting of a guide bush and a movable stamp.
  • Contact pieces for electrical engineering normally consist of a contact body made of a material with high security against welding during the switching process, such as silver with cadmium oxide, tin oxide, graphite or nickel, which is applied to a contact carrier.
  • a material with high security against welding during the switching process such as silver with cadmium oxide, tin oxide, graphite or nickel
  • Such contact materials with high sweat resistance are difficult to connect to the carrier using conventional connection methods such as soldering or welding.
  • a method is known from DE-C2-1 564572 for connecting contact materials that are difficult to weld directly to the contact carrier by means of ultrasonic welding.
  • a contact body blank is fed to the oscillator of an ultrasound device, which is also designed as a stamp for the contact body, and is deformed to its final shape by the simultaneous action of vibrations and pressure and, at the same time, is welded to the contact carrier.
  • the ultrasonic welding process offers advantages, but in most cases it does not provide a sufficient connection between the contact body and the contact carrier. In many cases, contact pads welded on in this way do not meet the requirements placed on the service life of such contact pieces when subjected to stress in the switching device.
  • the vibrator (sonotrode) is also an embossing tool, there is little flexibility in the design of this tool, since large masses and additional moving parts are not permitted to maintain the resonance conditions.
  • contact material is pressed out through the gap between the embossing tool and the contact carrier, which is caused by the process, so that reworking of the finished contact piece is necessary.
  • Embossing tools are generally known in the art, which consist of a guide bush with an embossing die movably arranged therein.
  • This object has been achieved according to the invention in that the sound energy is applied to the contact carrier and the contact body is pressed into its final shape with the embossing die while the guide bush resting on the contact carrier, with deformation of the contact body blank.
  • the deformation volume limited in the stamping tool by the guide bush and stamping stamp is greater than the volume of the contact body blank by at least 20%, preferably more than 40%.
  • FIGS. 1 and 11 Two exemplary embodiments of particularly advantageous embodiments of a device for carrying out the method according to the invention are shown schematically on the basis of FIGS. 1 and 11.
  • the device consists of an oscillator 1, on the preferably corrugated surface of which the contact carrier 5 rests.
  • the embossing tool 2 consists of a guide bush 3 and an embossing die 4 movable therein.
  • the contact body blank 6 is introduced into the embossing tool 2 with the embossing die 4 lying on top.
  • the guide bush 3 is placed directly on the contact carrier 5 without forming a gap. This prevents contact material from the embossing tool 2 from escaping during the subsequent embossing process with the embossing die 4, under the simultaneous action of sound energy via the oscillator 1, which would make reworking of the finished contact piece necessary.
  • the volume 7 in the embossing tool 2, delimited by the guide bush 3 and the embossing die 4, is advantageously more than 20% larger than the volume of the contact body blank 6, by one for the connection strength to achieve a sufficiently high degree of deformation of the contact body blank 6.
  • This volume 7 is preferably more than 40% larger than the volume of the contact body blank.
  • the movable embossing die 4, in cooperation with the guide bush 3, is simultaneously designed as a separating tool for the contact body blank 6, so that the contact body blank in the embossing tool itself immediately before the embossing process of a semifinished product 8, for example wire, tape or profile, separated, preferably sheared.
  • the freshly created surfaces promote the formation of a connection between the contact carrier and the contact body during the subsequent stamping process.
  • the design of the embossing tool 2 can take place in terms of shape and mass independently of vibration-related aspects.
  • the vibrator 1 can be optimally designed according to aspects or sound generation and sound transmission, regardless of the technical aspects of the press.
  • contact materials such as silver-cadmium oxide, silver-tin oxide, silver-graphite or silver-nickel, which are difficult to weld, can be processed.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Switches (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Claims (9)

1. Procédé pour l'application de corps de contact sur des porte-contacts (5) sous l'effet simultané de la pression et des ultrasons, par compression d'une ébauche de corps de contact (6) sur le porte-contact (5) à l'aide d'un outil d'estampage (2) se composant d'une boîte de guidage (3) et d'un poinçon mobile (4) caractérisé en ce que l'énergie ultrasonique est appliquée sur le porte-contact (5) et que te.corps de contact est comprimé à l'aide du poinçon (4), avec déformation de l'ébauche de corps de contact (6), jusqu'à sa forme définitive dans une boîte de guidage (3) appliquée sur le porte-contact (5).
2. Procédé selon la revendication 1, caractérisé en ce que le volume de déformation dont on dispose au début de la déformation dans l'outil d'estampage (2) est d'au moins 20% supérieur au volume de l'ébauche du corps de contact (6).
3. Procédé selon l'une des revendications 1 ou 2, caractérisé en ce que l'ébauche du corps de contact (6) est séparée d'un semi-produit (8) dans l'outil d'estampage (2) même immédiatement avant l'opération de pressage.
4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que la déformation de l'ébauche du corps de contact (6) est assuré par la configuration de l'outil d'estampage (2), de telle sorte qu'il se crée sur la périphérie du corps de contact une turbulence du matériau dans le corps de contact.
5. Dispositif pour l'exécution du procédé selon l'une des revendications 1 à 4, se composant d'un oscillateur (1) (Sonotrode) et d'un outil d'estampage (2) composé d'une boîte de guidage (3) et d'un poinçon (4) mobile à l'intérieur, caractérisé en ce que l'oscillateur (1) s'applique au porte-contact (5).
6. Dispositif selon la revendication 5, caractérisé en ce que le volume (7), limité au début de la déformation dans l'outil d'estampage (2) par la boîte de guidage (3) et le poinçon (4), est d'au moins 20% supérieur au volume de l'ébauche de corps de contact (6).
7. Dispositif selon l'une des revendications 5 ou 6, caractérisé en ce que le poinçon mobile (4) constitue, en collaboration avec la boîte de guidage (3), en même temps l'outil de séparation des ébauches de corps de contact (6).
8. Dispositif selon la revendication 7, caractérisé en ce que le bord inférieur de la boîte de guidage (3) est chanfreiné sur le côté intérieur selon un angle de 30 à 60°.
9. Dispositif selon l'une des revendications 5 à 8, caractérisé en ce que la surface de l'oscillateur (1) dirigée vers le porte-contact (5) est cannelée.
EP80105704A 1979-10-03 1980-09-23 Procédé et dispositif pour fixer des pièces de contact sur des supports de contact Expired EP0027893B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80105704T ATE1794T1 (de) 1979-10-03 1980-09-23 Verfahren und vorrichtung zur aufbringung von kontaktkoerpern auf kontakttraeger.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2939997A DE2939997C2 (de) 1979-10-03 1979-10-03 Verfahren und Vorrichtung zur Aufbringung von Kontaktkörpern auf Kontaktträger
DE2939997 1979-10-03

Publications (2)

Publication Number Publication Date
EP0027893A1 EP0027893A1 (fr) 1981-05-06
EP0027893B1 true EP0027893B1 (fr) 1982-11-10

Family

ID=6082523

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80105704A Expired EP0027893B1 (fr) 1979-10-03 1980-09-23 Procédé et dispositif pour fixer des pièces de contact sur des supports de contact

Country Status (3)

Country Link
EP (1) EP0027893B1 (fr)
AT (1) ATE1794T1 (fr)
DE (1) DE2939997C2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4483781A (en) * 1983-09-02 1984-11-20 The Procter & Gamble Company Magnesium salts of peroxycarboxylic acids
WO1990015425A1 (fr) * 1989-05-31 1990-12-13 Siemens Aktiengesellschaft PROCEDE DE FABRICATION D'UN MATERIAU DE CONTACT AU CuCr POUR DES INTERRUPTEURS A VIDE, ET MATERIAU DE CONTACT CORRESPONDANT
DE4139998A1 (de) * 1991-12-04 1993-06-09 Siemens Ag, 8000 Muenchen, De Kontaktstueck mit einer schaltsilber-kontaktauflage und verfahren zu seiner herstellung
DE4204641C2 (de) * 1992-02-15 1994-09-22 Hella Kg Hueck & Co Kontaktsatz
DE19935633A1 (de) * 1999-07-29 2001-02-01 Abb Patent Gmbh Verfahren zum Befestigen eines scheibenförmigen Kontaktstückes auf einem zylindrischen Träger
CN114274096A (zh) * 2021-11-29 2022-04-05 河南平高电气股份有限公司 一种灭弧室弧触头安装工装

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1220235B (de) * 1962-01-25 1966-06-30 Lehfeldt & Co G M B H Dr Vorrichtung zum Ultraschallschweissen
DE1564572C2 (de) * 1966-04-21 1975-01-09 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren zum Verbinden von Kontaktkörpern mit Kontaktträgern
US3926357A (en) * 1973-10-09 1975-12-16 Du Pont Process for applying contacts
CH595685A5 (fr) * 1976-08-19 1978-02-28 Rau Fa G
DE2642339C3 (de) * 1976-09-21 1980-07-24 Fa. G. Rau, 7530 Pforzheim Kontaktkörper und Herstellungsverfahren hierzu

Also Published As

Publication number Publication date
DE2939997A1 (de) 1981-04-23
DE2939997C2 (de) 1984-04-26
EP0027893A1 (fr) 1981-05-06
ATE1794T1 (de) 1982-11-15

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