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EP0108454B2 - Contact récepteur, notamment pour un contact à couteau d'un fusible à couteau et sa méthode de fabrication - Google Patents
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EP0108454B2 - Contact récepteur, notamment pour un contact à couteau d'un fusible à couteau et sa méthode de fabrication - Google Patents

Contact récepteur, notamment pour un contact à couteau d'un fusible à couteau et sa méthode de fabrication Download PDF

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Publication number
EP0108454B2
EP0108454B2 EP19830201554 EP83201554A EP0108454B2 EP 0108454 B2 EP0108454 B2 EP 0108454B2 EP 19830201554 EP19830201554 EP 19830201554 EP 83201554 A EP83201554 A EP 83201554A EP 0108454 B2 EP0108454 B2 EP 0108454B2
Authority
EP
European Patent Office
Prior art keywords
contact
strip
receptacle
bent
cross strip
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
EP19830201554
Other languages
German (de)
English (en)
Other versions
EP0108454A1 (fr
EP0108454B1 (fr
Inventor
Karel Kuipers
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.)
Holec Holland NV
Original Assignee
Hazemeijer BV
Holec Systemen en Componenten BV
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=19840536&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0108454(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hazemeijer BV, Holec Systemen en Componenten BV filed Critical Hazemeijer BV
Publication of EP0108454A1 publication Critical patent/EP0108454A1/fr
Application granted granted Critical
Publication of EP0108454B1 publication Critical patent/EP0108454B1/fr
Publication of EP0108454B2 publication Critical patent/EP0108454B2/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/42—Knife-and-clip contacts

Definitions

  • the invention relates to a receptacle contact, in particular for a knife contact of a knife fuse for electrical systems, consisting of electrically conducting sheet metal bent into such a shape as to comprise two substantially parallel contact jaws, connected with one another by a connecting portion, and a connection strip, which is connected with the connecting portion, in which said receptacle contact is made from a rectangular plate having two parallel slits, which extend from one edge of the plate towards the opposite edge and thus from three separate parallel strips connected with one another by a cross strip extending along the said opposite edge, which cross strip is bent to a U-shape along lines which are substantially aligned with the two slits, in which both outer strips of the three parallel strips are bent towards one another in order to form the two substantially parallel contact jaws while the center strip is bent perpendicular to the cross strip, in order to form the connection strip, said cross strip forming said connecting portion.
  • Such receptacle contact is known from DE-U 7 637 798. These contacts are used mainly for knife fuse holders, but also for instance for safety fuse load switches. These known receptacle contacts are made for instance of sheet metal, for instance by punching a T-shaped primary part from copper tape or copper strip. Punching the primary part such that a rectangular plate is obtained having two parallel narrow slits, results in a saving in plate material. In order to obtain the necessary spring tension these receptacle contacts may comprise separate pressure springs, as known from NL-A 98 321. The application of separate springs for the necessary contact pressure is complicated because of the closed lower side of the contact. In order to mount the receptacle contact on a base plate, housing or like mounting material is necessary moreover, such as bolts and nuts. This also influences the cost price unsatisfactory.
  • the receptacle contact of the present invention which is characterized in that the U-shaped bent cross strip of each receptacle contact is fitted in a fitting U-shaped recess in the belonging support part of an insulating support body of the device.
  • the receptacle contact can be mounted with ease on a base body of for instance the fuse holder by means of the U-shaped connecting portion, so that further mounting material can be dispensed with, which lowers the price of the fuse holder. Also the mounting operation by itself is easy because no additional mounting material is necessary.
  • receptacle contacts are known per se, also fabricated in a material saving method.
  • these known receptacle contacts are suitable only for lower nominal current values, for instance lower than 250 amperes. In case of current values above 250 amperes it is necessary to use several such contacts in parallel so that the advantage of the material saving process is eliminated.
  • a receptacle contact of the present invention can be used for a plurality of current values, using the same contact shape.
  • Fig. 1 shows in which way the primary part of the known receptacle contact is punched from a copper tape or copper strip.
  • the continuous lines shows the folded out configuration of the said known contact 1.
  • the interrupted lines show in which way further receptacle contacts can be punched from this tape material in the most economical way.
  • the shaded portions clearly show that relatively much material is lost doing so. Because predetermined lengths are necessary for the contact jaws (6) and connection strip 5 to be formed, the material saving of the shaded portions is limited.
  • Fig. 2 shows a folded out configuration of a receptacle contact of the present invention, for a fuse holder for nearly the same nominal current value as the counter contact of fig. 1.
  • the shaded portions show the not used material and it appears clearly that this is substantially less than in the known contact. This results from the parallel position of the strips 6 and 5 in this primary part, forming after bending the respective contact jaws and the connection strip.
  • Fig. 3 shows the receptacle contact 1 mounted on a support body, i.e. received in a U-shaped recess 8 of the belonging support part 2 of an insulated support body of a fuse holder for instance.
  • 7 is a knife fuse, separation knife or the like.
  • the contact jaws and connection strip are shown using the same reference numbers as in fig. 1 and 2.
  • Fig. 4 shows a side view of such a receptacle contact 1 received in a support part 2.
  • the receptacle contact of the present invention need not be mounted on top of the support part 2 of the fuse holder by means of bolts or screws, but fits with its lower portion, i.e. the U-shaped cross strip 3, partly or wholly in the recess.
  • the receptacle contact is supported largely in the support part, whereas for a firmer mounting within this support part it is necessary only to deform by upsetting or bending and the like.
  • the support part 2 in case this is made of thermoplastic material, can be therefore plastically deformed.
  • An additional spring for additional contact pressure of the contact jaws as used in the receptacle contact of above-said NL-A 98321, also can be used in this receptacle contact of the present invention in a simple way and placed in position from the open lower edge, before the receptacle contact is received in the U-shaped recess 8 of support part 2.
  • the U-shaped recess 8 extends over the whole height of support part 2. This is not necessary, however. At the lower side this recess can be enlarged by leaving out the center portion, vide reference number 9 in fig. 3 and 4. This facilitates the deformation of the lower edge of the U-shaped cross strip 3.
  • the receptacle contact of the present invention is fabricated in the following way.
  • connection opening 4 in the connection strip 5 can be made, and openings for a spring to increase the contact pressure of the contact jaws 6, in case this is considered necessary.
  • these springs and belonging openings are not shown in the drawings.
  • connection strip 5 is bent perpendicular to the plane of the folded out configuration, which means perpendicular to the cross strip 3.
  • both contact jaws 6 are bent towards one another by bending the cross strip 3 such that a U-shape is obtained. In this way it is guaranteed that at all locations of the contact the necessary thickness of the silver-plating is obtained.
  • the silver-plating can be applied also in a last fabrication step.
  • the receptacle contact thus obtained can be placed with the perpendicularly bent parts a, b and c in the recess 8 of the support part 2 and fastened therein. This offers a satisfying initial fastening of the contacts and it need be guaranteed only that the contact is not drawn from the support part 2 upon removing a knife fuse or knife contact.
  • the support part 2 can be deformed plastically, for instance by ultrasonic vibrations such, that the cross strip 3 with parts a, b and c are firmly held in place.
  • a light curvature of parts a, b and c is of advantage here for accepting draw forces.
  • the cross strip 3 also can have a short transversely bent edge at its lower side, which after pushing in the U-shaped recess 8 will snap below the upper wall of recess 9. This also will take care of forces upon removing a knife contact of a knife fuse, so that the receptacle contact is not drawn out then.
  • other snap connections are possible with adapted modifications of the support part 2 or the recess 8.
  • the contact can be made appropriate for different current values.

Landscapes

  • Fuses (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Manufacture Of Switches (AREA)

Claims (7)

1. Contact récepteur (1), en particulier destiné à un contact à couteau de fusible à couteau (7) pour systèmes électriques, consistant en une feuille de métal électriquement conductrice pliée en une forme telle qu'elle comprenne deux mâchoires de contact (6) sensiblement parallèles, raccordées l'une avec l'autre par une pièce de connexion (b), et une bande de connexion (5) qui est raccordée avec la partie de connexion, ce contact récepteur (1 ) étant fabriqué à partir d'une plaque rectangulaire qui a deux fentes parallèles qui s'étendent d'un bord de la plaque en direction du bord opposé et qui forment ainsi trois bandes parallèles séparées (6, 5, 6) raccordées les unes avec les autres par une bande transversale qui est pliée en forme de U le long de lignes qui sont sensiblement alignées avec les deux bandes extérieures (6, 6) faisant partie des trois bandes parallèles, tandis que la bande centrale (5) est pliée perpendiculairement à la bande transversale (a, b, c), pour former la bande de connexion, cette bande transversale (a, b, c) formant cette partie de connexion, caractérisé en ce que la bande transversale pliée en forme de U (a, b, c) de chacun des contacts récepteurs (1) est fixée dans un logement de fixation en forme de U (8) pratiqué dans la pièce formant support (2) appartenant au corps du support isolant de l'appareil.
2. Appareil conforme à la revendication 1, caractérisé en ce que les contacts récepteurs (1) sont immobilisés par une déformation plastique mécanique de la bande transversale en forme de U (a, b, c) fixée dans le logement en forme de U (8).
3. Appareil conforme à la revendication 2, caractérisé en ce que la déformation est obtenue par refoulement du bord opposé de la bande transversale (a, b, c).
4. Appareil conformé à la revendication 1, caractérisé en ce que le bord opposé de la bande transversale (a, b, c) est courbé de telle sorte que, après avoir été poussée dans le logement, cette partie pliée peut s'encliqueter derrière une surface (9) de la pièce formant support (2).
5. Appareil conformé à la revendication 1, caractérisé en ce que les contacts récepteurs (1) sont immobilisés par déformation plastique ultrasonore de la pièce formant support (2).
6. Contact récepteur conformé à la revendication 1, caractérisé en ce que la ligne de pliage qui se trouve entre la bande de connexion (5) et la bande transversale (a, b, c) est située plus près du bord opposé de la plaque que ne le sont les lignes de pliage qui se trouvent entre les bandes format les mâchoires de contact extérieures (6, 6) et la bande transversale (a, b, c).
7. Contact récepteur conforme à la revendication 1 ou à la revendication 6, caractérisé en ce que la bande centrale (b, 5) formant la bande de connexion est plus courte que les bandes extérieures (a, 6), (c, 6) des mâchoires de contact.
EP19830201554 1982-11-05 1983-10-28 Contact récepteur, notamment pour un contact à couteau d'un fusible à couteau et sa méthode de fabrication Expired EP0108454B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8204297 1982-11-05
NL8204297A NL8204297A (nl) 1982-11-05 1982-11-05 Tegenkontakt, in het bijzonder voor een meskontakt van een mespatroon en werkwijze voor het vervaardigen hiervan.

Publications (3)

Publication Number Publication Date
EP0108454A1 EP0108454A1 (fr) 1984-05-16
EP0108454B1 EP0108454B1 (fr) 1986-02-19
EP0108454B2 true EP0108454B2 (fr) 1990-01-10

Family

ID=19840536

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830201554 Expired EP0108454B2 (fr) 1982-11-05 1983-10-28 Contact récepteur, notamment pour un contact à couteau d'un fusible à couteau et sa méthode de fabrication

Country Status (3)

Country Link
EP (1) EP0108454B2 (fr)
DE (1) DE3362203D1 (fr)
NL (1) NL8204297A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2323480B (en) * 1997-03-14 2002-03-20 Schneider Ltd An adapter arrangement for a circuit breaker

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1252284A (fr) * 1959-03-26 1961-01-27 Hazemeijer Co Contre-appui pour pièce de contact en forme de couteau
NL237552A (fr) 1959-03-26
FR2255779A1 (en) * 1973-12-19 1975-07-18 Labinal Printed circuit with connector elements - has support plate for elements parallel to circuit board
FR2404911A1 (fr) * 1977-10-03 1979-04-27 Labinal Nouvel organe de contact pour boite a fusibles
DE3040884C2 (de) * 1980-10-30 1986-09-25 Hermann Stribel KG, 7443 Frickenhausen Sicherungseinrichtung

Also Published As

Publication number Publication date
NL8204297A (nl) 1984-06-01
EP0108454A1 (fr) 1984-05-16
DE3362203D1 (en) 1986-03-27
EP0108454B1 (fr) 1986-02-19

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