EP0143904B1 - Dispositif de contact pour relier électriquement deux doigts de contact qui s'alignent grossièrement - Google Patents

Dispositif de contact pour relier électriquement deux doigts de contact qui s'alignent grossièrement Download PDF

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Publication number
EP0143904B1
EP0143904B1 EP84110140A EP84110140A EP0143904B1 EP 0143904 B1 EP0143904 B1 EP 0143904B1 EP 84110140 A EP84110140 A EP 84110140A EP 84110140 A EP84110140 A EP 84110140A EP 0143904 B1 EP0143904 B1 EP 0143904B1
Authority
EP
European Patent Office
Prior art keywords
contact
lamellae
fingers
lamella
points
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
EP84110140A
Other languages
German (de)
English (en)
Other versions
EP0143904A1 (fr
Inventor
Rainer Poth
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
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0143904A1 publication Critical patent/EP0143904A1/fr
Application granted granted Critical
Publication of EP0143904B1 publication Critical patent/EP0143904B1/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
    • H01H1/38—Plug-and-socket contacts

Definitions

  • the invention relates to a contact device for the electrical connection of two contact fingers, which may only be roughly aligned with one another, according to the preamble of claim 1.
  • a contact device of the type mentioned in the preamble of claim 1 is already known.
  • the spring force consists of convexly curved flat springs, each of which engages in the back of a contact lamella through a recess in the ring washer, with its ends abutting the ends of the associated contact lamella and is supported with the vertex of its back on the inside of the recess in the ring washer (DE-C -10 15 518).
  • annular disk is also provided, as in the contact device according to the preamble of claim 1.
  • this washer is not a separate part, but is molded onto one of the contact fingers.
  • the radial spring force consists of several coil springs, each of which is bent into a circle and connected to one another at the ends (DE-C-547 182).
  • the object of the invention is to design the contact device for the electrical connection of two contact fingers of the type mentioned in the preamble of claim 1 in a simple manner so that their heating during operation is kept below the predetermined limit without increasing the construction volume, in particular with poor heat dissipation.
  • the object is achieved according to the invention by the training specified in the characterizing part of claim 1.
  • each contact lamella of the contact device according to the invention has three contact points, one on one lamella end and two on the other lamella end.
  • This design results in a three-point system of each contact lamella on the contact fingers, which is defined at any time, regardless of whether the contact fingers are aligned with one another or are more or less offset from one another.
  • the three contact points per contact lamella also result in three current transition points between each 1 contact lamella and the contact fingers, instead of two current transition points in the prior art. Since the current can now be distributed over a larger number of current transition points during operation, the proportion of electricity that each current transition point has to transmit is correspondingly lower and thus both the partial and the total heating are lower.
  • 1 denotes a contact finger made of round material.
  • the reference symbol 2 applies to a contact finger that is the same as the contact finger 1.
  • a contact device 3 is provided for electrically connecting the contact fingers 1 and 2, which, contrary to the drawing, can also only be roughly aligned with one another.
  • the contact device 3 has an annular disk 4 (FIG. 1) and a ring of contact lamellae 5, which have an approximately square cross section (FIG. 2).
  • Each of the contact blades 5 is bent out approximately in a barrel shape.
  • the apex of the bend is in the middle of the contact lamellae 5.
  • the barrel-shaped bend is followed by an opposite bend.
  • the contact lamellae 5 are encompassed by two coil springs 6 each bent into a ring, the ends of which are each connected to one another.
  • the coil springs 6 are located in the throats of the oppositely directed bends following the barrel-shaped bends of the contact lamellae 5.
  • the contact blades 5 are held with the coil springs 6 in engagement with the washer 4 and can be expanded against the force of the coil springs 6 by the contact fingers 1, 2.
  • Each of the contact blades 5 has three contact points at which, during operation of the contact device 3, a current transfer takes place between the contact blades 5 and the contact fingers 1, 2.
  • One of the contact points is arranged at one end of each contact lamella 5, while the other two contact points are located at the other end of each contact lamella.
  • the contact plates 5 are arranged offset by 180 ° in such a way that each end of a contact plate 5 with a contact point is adjacent to a contact plate end with two contact points. This means that on both contact fingers 1, 2 each contact lamella end with one contact point is followed by a contact lamella end with two contact points (FIG. 2).
  • each contact lamella 5 is fluted at one end on its side facing the associated contact finger 1 or 2.
  • the radius of the groove is smaller than half the diameter of the corresponding contact finger 1 or 2 (FIG. 2).
  • the ends of the contact lamellae 5 each having only one contact point can be designed in two ways in the example shown. They either have flat surfaces that can be tangentially attached to the assigned contact fingers 1 or 2 or are also grooved. In this case, however, the groove is such that its radius is larger than half the diameter of the respective contact fingers 1 or 2.
  • the contact lamellae 5 can also be provided at one end with a knob forming the single contact point and at the other end with two knobs forming the double contact point.

Landscapes

  • Contacts (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Claims (4)

1. Dispositif de contact pour relier électriquement deux doigts de contact (1, 2) qui s'alignent seulement grossièrement le cas échéant, comprenant un disque annulaire (4) et une couronne de lamelles de contact (5) disposées autour du disque annulaire (4), qui possèdent une section droite quadrangulaire, sont maintenues appliquées contre le disque annulaire (4) par une force de ressort radiale (6) et peuvent être écartées à l'encontre de cette force de ressort (6) par les doigts de contact (1, 2), caractérisé en ce que les lamelles de contact (5) présentent chacune trois points de contact, un à une extrémité de la lamelle et deux à l'autre extrémité de la lamelle, et que les lamelles de contact (5) sont mutuellement décalées de manière que chaque extrémité d'une lamelle de contact (5) présentant un point de contact soit voisine d'une extrémité d'une lamelle de contact (5) présentant deux points de contact.
2. Dispositif de contact selon la revendication 1, caractérisé en ce que, pour la formation des points de contact doubles, les côtés des lamelles (5) dirigés vers les doigts de contact (1, 2) sont pourvus d'une gorge à une extrémité et que le rayon de cette gorge est plus petit que la moitié du diamètre du doigt de contact (1 ou 2) correspondant.
3. Dispositif de contact selon les revendications 1 et 2, caractérisé en ce que les côtés des lamelles de contact (5) dirigés vers les doigts de contact (1, 2), présentent une surface plane applicable tangentiellement contre le doigt de contact (1 ou 2) correspondant à l'extrémité présentant seulement un point de contact.
4. Dispositif de contact selon les revendications 1 et 2, caractérisé en ce que les côtés des lamelles de contact (5) dirigés vers les doigts de contact (1, 2) sont également pourvus d'une gorge aux extrémités présentant seulement un point de contact, le rayon de cette gorge étant plus grand que la moitié du diamètre du doigt de contact (1 ou 2) correspondant.
EP84110140A 1983-09-06 1984-08-24 Dispositif de contact pour relier électriquement deux doigts de contact qui s'alignent grossièrement Expired EP0143904B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3332141 1983-09-06
DE19833332141 DE3332141A1 (de) 1983-09-06 1983-09-06 Kontaktvorrichtung zum elektrischen verbinden zweier gegebenenfalls nur grob miteinander fluchtender kontaktfinger

Publications (2)

Publication Number Publication Date
EP0143904A1 EP0143904A1 (fr) 1985-06-12
EP0143904B1 true EP0143904B1 (fr) 1986-11-05

Family

ID=6208373

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84110140A Expired EP0143904B1 (fr) 1983-09-06 1984-08-24 Dispositif de contact pour relier électriquement deux doigts de contact qui s'alignent grossièrement

Country Status (7)

Country Link
EP (1) EP0143904B1 (fr)
AU (1) AU3272484A (fr)
BR (1) BR8404435A (fr)
DE (2) DE3332141A1 (fr)
GR (1) GR81977B (fr)
IN (1) IN159388B (fr)
ZA (1) ZA846953B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5025121A (en) * 1988-12-19 1991-06-18 Siemens Energy & Automation, Inc. Circuit breaker contact assembly

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2376818A (en) * 1943-01-06 1945-05-22 Westinghouse Electric & Mfg Co Disconnecting contact
DE1015518B (de) * 1953-10-09 1957-09-12 Bbc Brown Boveri & Cie Kontaktvorrichtung
US3064226A (en) * 1959-09-28 1962-11-13 Fred H Cole Vibration resistant connector
DE1125999B (de) * 1960-04-25 1962-03-22 Licentia Gmbh Schaltkontakt fuer Leistungsschalter
DE1134446B (de) * 1961-05-16 1962-08-09 Sachsenwerk Licht & Kraft Ag Kontakteinrichtung fuer elektrische Schaltgeraete
US3127492A (en) * 1961-05-29 1964-03-31 Mc Graw Edison Co Electric contact assemblage of contact fingers in which helically wound conductive members provide contact pressure
CH474876A (de) * 1968-11-05 1969-06-30 Bbc Brown Boveri & Cie Elektrische Kontaktanordnung

Also Published As

Publication number Publication date
AU3272484A (en) 1985-03-14
ZA846953B (en) 1985-04-24
GR81977B (fr) 1984-12-12
IN159388B (fr) 1987-05-09
BR8404435A (pt) 1985-08-20
DE3461234D1 (en) 1986-12-11
EP0143904A1 (fr) 1985-06-12
DE3332141A1 (de) 1985-03-21

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