EP0502394B1 - Configuration des contacts - Google Patents

Configuration des contacts Download PDF

Info

Publication number
EP0502394B1
EP0502394B1 EP92103055A EP92103055A EP0502394B1 EP 0502394 B1 EP0502394 B1 EP 0502394B1 EP 92103055 A EP92103055 A EP 92103055A EP 92103055 A EP92103055 A EP 92103055A EP 0502394 B1 EP0502394 B1 EP 0502394B1
Authority
EP
European Patent Office
Prior art keywords
contact
lever
movable contact
movable
contact element
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
EP92103055A
Other languages
German (de)
English (en)
Other versions
EP0502394A3 (en
EP0502394A2 (fr
Inventor
Erwin Muders
Dirk Umbach
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.)
ABB Patent GmbH
Original Assignee
ABB Patent 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
Application filed by ABB Patent GmbH filed Critical ABB Patent GmbH
Publication of EP0502394A2 publication Critical patent/EP0502394A2/fr
Publication of EP0502394A3 publication Critical patent/EP0502394A3/de
Application granted granted Critical
Publication of EP0502394B1 publication Critical patent/EP0502394B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/18—Contacts characterised by the manner in which co-operating contacts engage by abutting with subsequent sliding
    • 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
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact

Definitions

  • the invention relates to a contact arrangement according to the preamble of claim 1.
  • the invention relates in particular to a contact arrangement for an auxiliary switch which is combined with a circuit breaker.
  • the contact force is generated in different ways, for example by a leg spring resting on the contact lever with both legs, see DE-OS 34 31 664.7, or a helical spring is used if the contact lever is pressed by a Tappet is driven, see DE-OS 15 63 781.
  • Leaf springs are known from DE-AS 11 23 029 and from DE-OS 14 63 384 a resilient intermediate piece has become known with which the contact force is generated.
  • the contact force can be generated in that the contact lever itself is resilient.
  • the object of the invention is to provide a contact arrangement of the type mentioned in the introduction, in which a contact pressure spring which increases the contact force is provided and is nevertheless easy to produce.
  • a leg spring which is arranged on a fixed pin and is supported with one leg on the contact lever and with the other leg on the housing.
  • the arrangement generates the contact force directly from the leg spring in the switching position in which the movable contact piece bears in the same direction against the one fixed contact piece in which the force of the leg spring acts on the contact lever.
  • the contact force is also generated quasi indirectly by the leg spring, namely deflected by the bracket. Due to the position of the force application point of the leg on the movable contact lever, the movable contact lever is subjected to a torque which tries to rotate it about the articulation point of the bracket on the contact lever, whereby the contact force is generated at the other fixed contact piece.
  • the direction of the force generated by the leg spring on the contact lever runs opposite to the direction in which the contact force acts, as a result of which the torque is generated around the articulation point of the bracket on the contact lever.
  • the bearing point of the contact lever is an elongated hole, so that the contact lever has a certain free mobility in the region of its bearing point.
  • An auxiliary switch has a movable contact lever 10, at one free end of which a movable contact piece 11 is attached.
  • the contact lever 10 has a tab 12 running perpendicular to it and integrally formed thereon, in which an elongated hole 13 is made, the longitudinal extent of which corresponds approximately to the direction of movement of the movable contact piece 11 or extends in this direction.
  • a leg spring 15 is arranged around the pin, one leg 16 of which is supported on a fixed stop 17 in the housing, whereas the other leg 18 bears against the contact lever 10.
  • a bracket 20 engages, which is connected to a drive mechanism and pivots the contact lever 10, for example from the position shown in FIG. 1 to the position shown in FIG.
  • the movable contact piece 11 interacts with two fixed contact pieces 21 and 22 which are arranged at a distance from one another, so that the movable contact piece 11 comes into contact with the fixed contact piece 21 in a first switching position and with the fixed contact piece 22 in a second switching position.
  • the leg 18 of the leg spring 15 engages the contact lever 10 in the region between the bearing point and the articulation point 19 of the bracket 20 and acts in a direction which is opposite to the driving force of the bracket 20.
  • the contact lever 10 is then located in the switch so that the pin 14 bears against the end of the elongated hole facing away from the contact lever 10.
  • the contact lever 10 moves due to the driving force (direction of arrow A) from the bracket 20 in a clockwise direction around the bearing point, the pin 14 on the same first End rests, as drawn in Figure 1.
  • the contact lever pivots about a pivot point 23 formed by the movable contact piece 11 and the fixed contact piece 22, so that the pin 14 comes to lie approximately in its central region relative to the elongated hole 13.
  • the leg acts in the direction of arrow B on the contact lever 10, it causes a torque around the articulation point 19, which acts in a clockwise direction on the contact lever 10, whereby the contact force between the movable contact piece 11 and the fixed contact piece 22 is established. If the movable contact piece 11 is on the fixed contact piece 12, then the tab will move on a circular arc when the contact lever 10 is rotated about the contact point 23. If the pin is guided exactly in the slot, ie the width of the slot 13 transverse to the longitudinal extension of the slot 13 substantially corresponds to the diameter of the pin 14, then the movable contact piece 11 moves back and forth on the fixed contact piece 22, corresponding to that Assignment of the elongated hole as a secant to the circular arc that the tab 12 covers.
  • the elongated hole would have to have a banana shape, the radius of which corresponds to the radius of rotation of the tab around the contact point. As mentioned, one does not want this, if possible, but rather a frictional movement of the movable contact piece on the fixed contact piece is to be generated.

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Claims (2)

  1. Agencement de contacts comprenant deux pièces de contact fixes opposées et une pièce de contact mobile qui est disposée à l'extrémité libre d'un levier de contact monté en rotation autour d'un axe d'articulation et peut être déplacé entre les deux pièces de contact fixes à partir d'une position de commutation dans laquelle elle se trouve en contact avec une première des pièces de contact fixes dans une autre position de commutation dans laquelle elle se trouve en contact avec l'autre pièce de contact fixe opposée, le levier de contact étant commandé par un étrier qui est relié à un mécanisme de commande et agit sur le levier de contact entre l'axe d'articulation et la pièce de contact mobile, caractérisé par le fait que le levier de contact (10) porte, dans la zone de l'axe d'articulation (13, 14), au moins une patte (12) qui présente un trou oblong (13) s'étendant à peu près dans la direction de mouvement de la pièce de contact mobile (11) et qui est traversée par un axe stationnaire (14), et qu'il est prévu un ressort à deux branches (15, 16, 18) qui est disposé sur l'axe (14), dont une branche (16) porte contre une butée fixe (17) et dont l'autre branche (18) agit élastiquement sur le levier de contact (10), à l'encontre de la force de commande exercée par l'étrier (20) sur le levier de contact (10), sur la partie du levier qui, par rapport à l'axe d'articulation (19) de l'étrier (20) sur le levier de contact (10), est éloignée de la pièce de contact mobile (11).
  2. Agencement de contacts suivant la revendication 1, caractérisé par le fait que le trou oblong (13) s'étend dans une direction faisant un angle avec la direction de mouvement de la pièce de contact mobile (11).
EP92103055A 1991-03-02 1992-02-24 Configuration des contacts Expired - Lifetime EP0502394B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4106653 1991-03-02
DE4106653A DE4106653A1 (de) 1991-03-02 1991-03-02 Kontaktanordnung

Publications (3)

Publication Number Publication Date
EP0502394A2 EP0502394A2 (fr) 1992-09-09
EP0502394A3 EP0502394A3 (en) 1993-08-04
EP0502394B1 true EP0502394B1 (fr) 1996-03-27

Family

ID=6426303

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92103055A Expired - Lifetime EP0502394B1 (fr) 1991-03-02 1992-02-24 Configuration des contacts

Country Status (2)

Country Link
EP (1) EP0502394B1 (fr)
DE (2) DE4106653A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19741927C1 (de) 1997-09-23 1999-05-06 Aeg Niederspannungstech Gmbh Schalter
DE102008025179A1 (de) * 2008-05-26 2009-12-03 Tyco Electronics Amp Gmbh Kontaktwippe
CN109411247A (zh) * 2017-08-18 2019-03-01 日立电梯（中国）有限公司 一种开关防回弹装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE420642A (fr) * 1938-04-29
US2324891A (en) * 1941-05-01 1943-07-20 Gen Electric Electric circuit interrupter
DE859652C (de) * 1950-08-12 1952-12-15 Siemens Ag Nockenschalter mit zweiseitig wirkendem federbelastetem Kontaktarm
DE1123029B (de) * 1959-09-24 1962-02-01 Licentia Gmbh Thermischer Kleinselbstschalter
DE1882585U (de) * 1963-09-18 1963-11-14 Walter Rich Schalter bzw. umschalter mit drehbarem kontakt.
DE1463384A1 (de) * 1964-09-03 1968-12-12 Licentia Gmbh Mechanismus fuer Schaltgeraete
DE1563781C3 (de) * 1966-12-08 1973-10-31 Siemens Ag, 1000 Berlin U. 8000 Muenchen Leitungsschutzschalter
DE2544470A1 (de) * 1975-10-04 1977-04-07 Geyer Fa Christian Mechanismus fuer selbstschalter
EP0076343B1 (fr) * 1980-02-26 1986-08-27 BURROUGHS CORPORATION (a Delaware corporation) Appareil photo-optique de commutation
EP0124885B1 (fr) * 1983-05-09 1992-12-09 CGE- COMPAGNIA GENERALE ELETTROMECCANICA S.p.A. Structure de contact d'un interrupteur
DE3431664A1 (de) * 1984-08-29 1986-03-20 Brown, Boveri & Cie Ag, 6800 Mannheim Elektrischer Schalter

Also Published As

Publication number Publication date
EP0502394A3 (en) 1993-08-04
EP0502394A2 (fr) 1992-09-09
DE4106653A1 (de) 1992-09-03
DE59205806D1 (de) 1996-05-02

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