EP0428475B1 - Interrupteur basse tension à levier de contact pivotant - Google Patents

Interrupteur basse tension à levier de contact pivotant Download PDF

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Publication number
EP0428475B1
EP0428475B1 EP90730016A EP90730016A EP0428475B1 EP 0428475 B1 EP0428475 B1 EP 0428475B1 EP 90730016 A EP90730016 A EP 90730016A EP 90730016 A EP90730016 A EP 90730016A EP 0428475 B1 EP0428475 B1 EP 0428475B1
Authority
EP
European Patent Office
Prior art keywords
contact
contact lever
lever
stationary
bearing
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
EP90730016A
Other languages
German (de)
English (en)
Other versions
EP0428475A2 (fr
EP0428475A3 (en
Inventor
Bernhard Dr. Pfeiffer
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 EP0428475A2 publication Critical patent/EP0428475A2/fr
Publication of EP0428475A3 publication Critical patent/EP0428475A3/de
Application granted granted Critical
Publication of EP0428475B1 publication Critical patent/EP0428475B1/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
    • H01H77/102—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement
    • H01H77/104—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement with a stable blow-off position

Definitions

  • a hook-like end at the rear end of the contact lever hits against a fixed stop on the support of the bearing pin when opening and in this way moves the contact lever relative to the bearing pin using the game mentioned.
  • the contact pieces meet in a different position than they existed in the previous switch-on state. This situation is now brought about with simultaneous occurrence of a sliding movement between the contacting contact pieces in that one of the surfaces of the bearing opening of the contact lever slides on the stationary bearing pin when the bearing-side end of the contact lever is pressed towards the end of the switching-on process.
  • the object of the invention is to reliably and repeatably effect the relative movement between the switching pieces touching one another when the switch is turned on.
  • the invention is based on a low-voltage circuit breaker with the following features: A lever contact arrangement consisting of a pivoted contact lever and a movable contact piece attached to the front end thereof; a fixed mating contact piece with a fixed contact piece attached thereto; a stationary bearing pin for pivotable mounting of the contact lever, which passes through a bearing opening of the contact lever with play; a fixed support of the bearing pin with a working surface which cooperates with the contact lever in the sense of the displacement of the contact lever in its longitudinal direction when pivoting the contact lever for switching on and off.
  • the bearing end of the contact lever is designed as a sliding or rolling surface and the working surface of the carrier is formed obliquely to the longitudinal axis of the contact lever.
  • FIGS. 1, 2 and 3 represent the switch-on process from the fully open position to the first contact of the contact pieces, while Figures 4 and 5 illustrate the subsequent displacement of the contact lever in its longitudinal direction.
  • the lever contact arrangement shown in FIG. 1 and in the following figures has a pivotably mounted contact lever 1 with a switching piece 2 attached to its front end.
  • the pivot bearing of the contact lever 1 is formed by a stationary bearing pin 3 and a recess 4, which extends through it in an approximately triangular manner and allows the contact lever 1 to be displaced in its longitudinal direction relative to the bearing pin 3.
  • the bearing pin 3 is fastened to a carrier 5, which can also be part of a current-transmitting joint arrangement.
  • the clutch lever 10 On its side remote from the bearing pin 3, the clutch lever 10 has a cam track 11 which interacts with a roller 12.
  • a tension spring 13 supported on the bearing pin 3 or an adjacent component prestresses the roller 12 against the cam track 11 by means of a guide pin 14.
  • a recess 15 adapted to the roller 12 in the cam track 11 and an elongated hole 16 provided in the contact lever 1 are matched to one another in such a way that the guide pin 14 bears against the inner end of the elongated hole 16 and thus prestresses the contact lever 1 in the direction of the carrier 5 as long as the contact pieces 2 and 6 do not touch.
  • the clutch lever 10 and the roller 12 can be arranged symmetrically on both sides of the contact lever.

Landscapes

  • Mechanisms For Operating Contacts (AREA)

Claims (2)

  1. Disjoncteur basse tension présentant les caractéristiques suivantes :
    un dispositif de contact à levier, constitué d'un levier de contact (1) monté pivotant et d'un élément de coupure (2) mobile monté sur l'extrémité avant de ce levier;
    une pièce de contact antagoniste (7) fixe, sur laquelle est monté de façon fixe une pièce de coupure (6);
    un tourillon fixe (3) pour le montage pivotant du levier de contact (1), qui traverse avec jeu une ouverture de palier (4) du levier de contact (1);
    un support fixe (5) du tourillon (3), ayant une surface de travail (21) qui, lors du pivotement du levier de contact (1) coopère, pour la fermeture et l'ouverture, avec le levier de contact (1) en vue d'un déplacement du levier de contact (1) dans sa direction longitudinale,
       caractérisé par les caractéristiques supplémentaires suivantes :
    l'extrémité, située du côté du palier, du levier de contact (1) est réalisée sous la forme d'une surface de glissement ou de roulement (20);
    la surface de travail (21) du support (5) est agencée de manière à s'étendre obliquement par rapport à l'axe longitudinal du levier de contact (1).
  2. Disjoncteur basse tension suivant la revendication 1, caractérisé par le fait qu'entre une butée fixe (3) et la partie avant du levier de contact (1) est dispose un ressort (13) qui précontraint le levier de contact (1) contre la surface oblique de travail (21).
EP90730016A 1989-11-13 1990-11-05 Interrupteur basse tension à levier de contact pivotant Expired - Lifetime EP0428475B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8913522U 1989-11-13
DE8913522U DE8913522U1 (de) 1989-11-13 1989-11-13 Niederspannungs-Leistungsschalter mit einer Hebelkontaktanordnung

Publications (3)

Publication Number Publication Date
EP0428475A2 EP0428475A2 (fr) 1991-05-22
EP0428475A3 EP0428475A3 (en) 1992-01-08
EP0428475B1 true EP0428475B1 (fr) 1995-02-15

Family

ID=6844622

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90730016A Expired - Lifetime EP0428475B1 (fr) 1989-11-13 1990-11-05 Interrupteur basse tension à levier de contact pivotant

Country Status (2)

Country Link
EP (1) EP0428475B1 (fr)
DE (2) DE8913522U1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5343174A (en) * 1993-06-07 1994-08-30 Eaton Corporation Electrical circuit interrupting device with means to break welded contacts
US5371662A (en) * 1993-08-06 1994-12-06 Shen-Ko; Tseng Movement-controlled light emitting device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1218593B (de) * 1963-11-27 1966-06-08 Walter Holzer Flachkontaktstueck
US4484164A (en) * 1983-03-28 1984-11-20 Siemens-Allis, Inc. Braidless movable contact with wiping action
JPS6070626A (ja) * 1983-09-26 1985-04-22 富士電機株式会社 回路しゃ断器の接触子機構

Also Published As

Publication number Publication date
DE59008472D1 (de) 1995-03-23
EP0428475A2 (fr) 1991-05-22
DE8913522U1 (de) 1991-03-14
EP0428475A3 (en) 1992-01-08

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