EP0428475A2 - 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
EP0428475A2
EP0428475A2 EP90730016A EP90730016A EP0428475A2 EP 0428475 A2 EP0428475 A2 EP 0428475A2 EP 90730016 A EP90730016 A EP 90730016A EP 90730016 A EP90730016 A EP 90730016A EP 0428475 A2 EP0428475 A2 EP 0428475A2
Authority
EP
European Patent Office
Prior art keywords
contact
contact lever
lever
bearing
stationary
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.)
Granted
Application number
EP90730016A
Other languages
German (de)
English (en)
Other versions
EP0428475B1 (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 present invention is to reliably and repeatably effect the relative movement between the switching pieces touching one another when switched 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 curved path 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 rests 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)
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 true EP0428475A2 (fr) 1991-05-22
EP0428475A3 EP0428475A3 (en) 1992-01-08
EP0428475B1 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)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5371662A (en) * 1993-08-06 1994-12-06 Shen-Ko; Tseng Movement-controlled light emitting device
EP0632478A1 (fr) * 1993-06-07 1995-01-04 Eaton Corporation Dispositif interrupteur électrique avec moyens pour assurer le décollage de contacts soudés

Citations (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
GB2137418A (en) * 1983-03-28 1984-10-03 Siemens Allis Inc Braidless movable contact with wiping action
GB2147146A (en) * 1983-09-26 1985-05-01 Fuji Electric Co Ltd Contact mechanism for a circuit breaker

Patent Citations (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
GB2137418A (en) * 1983-03-28 1984-10-03 Siemens Allis Inc Braidless movable contact with wiping action
GB2147146A (en) * 1983-09-26 1985-05-01 Fuji Electric Co Ltd Contact mechanism for a circuit breaker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0632478A1 (fr) * 1993-06-07 1995-01-04 Eaton Corporation Dispositif interrupteur électrique avec moyens pour assurer le décollage de contacts soudés
US5371662A (en) * 1993-08-06 1994-12-06 Shen-Ko; Tseng Movement-controlled light emitting device

Also Published As

Publication number Publication date
EP0428475B1 (fr) 1995-02-15
DE8913522U1 (de) 1991-03-14
DE59008472D1 (de) 1995-03-23
EP0428475A3 (en) 1992-01-08

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