EP0431461A2 - Mécanisme de commutation pour un interrupteur électrique - Google Patents

Mécanisme de commutation pour un interrupteur électrique Download PDF

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Publication number
EP0431461A2
EP0431461A2 EP90122802A EP90122802A EP0431461A2 EP 0431461 A2 EP0431461 A2 EP 0431461A2 EP 90122802 A EP90122802 A EP 90122802A EP 90122802 A EP90122802 A EP 90122802A EP 0431461 A2 EP0431461 A2 EP 0431461A2
Authority
EP
European Patent Office
Prior art keywords
spring
lever
contact
arm
switch mechanism
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.)
Withdrawn
Application number
EP90122802A
Other languages
German (de)
English (en)
Other versions
EP0431461A3 (en
Inventor
Rolf Goehle
Hermann Schmitt
Volker Schmitt
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 AG Germany
ABB AB
Original Assignee
Asea Brown Boveri AG Germany
Asea Brown Boveri AB
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 Asea Brown Boveri AG Germany, Asea Brown Boveri AB filed Critical Asea Brown Boveri AG Germany
Publication of EP0431461A2 publication Critical patent/EP0431461A2/fr
Publication of EP0431461A3 publication Critical patent/EP0431461A3/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/46—Automatic release mechanisms with or without manual release having means for operating auxiliary contacts additional to the main contacts
    • 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
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H01H1/26—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting with spring blade support

Definitions

  • the invention relates to a switching mechanism for an electrical switching device, in particular a signal switch, which switching device has at least one stationary contact piece and a movable contact piece arranged at the free end of a contact finger, the switching device having an adjusting lever and a pivoting part which can thus be pivoted about a pivot axis, with which the Contact finger is connected.
  • the switching device in which the switching mechanism is used is in particular a signal switch which has two fixed contact pieces, between which the movable contact piece can be moved back and forth.
  • the spring which absorbs the actuating force exerted by the actuating lever, has such a spring characteristic that the actuating force emanating from it and transmitted to the swivel part corresponds exactly to the required contact force. Accordingly, the length of the elongated hole is dimensioned so that the actuating lever with the guide pin guided in the elongated hole does not come into contact with the respective end of the elongated hole, so that the contact force is exceeded and thus an inadmissible deflection of the contact finger is ruled out given the predetermined geometric assignment.
  • a return spring works together with the swivel part, which on the one hand rests with its end on the swivel part side against the spring on the swivel part, while its opposite end is supported in a stationary manner in the housing.
  • FIG. 1 shows the side view of an electrical switching device 10 in a partially open state. It has a housing 12 in which a manual shift lever 14 is pivotably mounted about an axis of rotation 13, which manual shift lever 14 is designed as a double arm lever, one arm 14a of which is used for manual actuation as a handle and the other arm 14b within the housing 12 with a transmission bracket 15 is connected, which is hinged at its other end to a ratchet lever 17 of a switching mechanism 16.
  • the pawl lever 17 interacts with a release lever 21 rotatably mounted about an axis 19 such that a lug 23 of the pawl lever 17 is on a not shown Support edge on the trigger lever 21 can support.
  • an actuating lever 18 On the latch lever 17, one end of an actuating lever 18 is articulated, the other end of which is articulated on a swivel part 20, on which swivel part 20 a contact finger 22 is attached, which has a movable double contact piece 24, which has a first fixed contact piece 26 and a second one fixed contact piece 28 cooperates.
  • the first fixed contact piece 26 is connected to a first connection terminal 27 and the second fixed contact piece 28 to a second connection terminal 29.
  • the pivot lever 20 is U-shaped with two legs 20a and 20b, which are connected to each other by means of a web 20c.
  • the contact finger 22 is attached to the web 20c.
  • the adjusting lever 18 has at its swivel-part end an angled portion 25 which extends through an elongated hole 34 perpendicular to the leg 20a.
  • a spring 36 is attached, which is attached with one arm 37 to the leg 20a by bending and with its other arm 38 the leg 20a approximately parallel to the contact finger 22 and thus overlaps to the web 20c, is bent at an end edge 20d of the leg 20a of the leg 20a perpendicular to the contact finger 22 and is bent vertically inwards into the space between the two legs 20a and 20b at 35 and is then bent back perpendicularly to the contact finger 22 using a guide lug 40.
  • the spring 36 is mounted on the pivot 32 by means of a U-shaped bend 36a.
  • the end of the arm 44 is located between the leg 20a, the bend 25 of the adjusting lever 18 and the guide lug 40 of the arm 38 of the spring 36, ie within the above-mentioned distance between the guide lug 40 and the inner surface of the leg 20a.
  • FIG. 1 shows the switching device in the position in which the movable contact piece 24 bears against the fixed contact piece 26. From this position, the movable contact piece can be pressed against the fixed contact piece 28 by means of the switching mechanism as follows:
  • the actuating lever 18 When the manual control lever 14 is actuated, the actuating lever 18 is moved in the direction of its longitudinal axis by means of the bracket 15 and the ratchet lever 17, as a result of which it bears with its bend 25 against the end of the arm 44 of the return spring 41. Furthermore, since the actuating force of the actuating lever 18 is transmitted to the arm 38 of the spring 36 via the bend at 35, the pivot part 20 moves clockwise by means of the spring 36, so that the movable contact piece 24 comes to rest against the fixed contact piece 28.
  • the actuating lever 18 presses on the arms 44 and 38, a direct rotation of the pivoting part 20 is avoided because of the spring-loaded movement of the actuating lever 18 in the elongated hole 34 and the contact pressure remains - within limits - independent of the actuating path of the actuating lever 18, namely because the spring or the spring arm 38 or 44 will yield and thus a further increase in the contact force at the contact point 24/28 is avoided. This only builds up the required contact pressure at the contact point.
  • the swivel part 20 is connected to a wire 48 with a connecting terminal 30.

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
EP19900122802 1989-12-05 1990-11-29 Switch mechanism for an electrical switch Withdrawn EP0431461A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893940228 DE3940228A1 (de) 1989-12-05 1989-12-05 Schaltwerk fuer einen elektrischen schalter
DE3940228 1989-12-05

Publications (2)

Publication Number Publication Date
EP0431461A2 true EP0431461A2 (fr) 1991-06-12
EP0431461A3 EP0431461A3 (en) 1992-06-03

Family

ID=6394854

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900122802 Withdrawn EP0431461A3 (en) 1989-12-05 1990-11-29 Switch mechanism for an electrical switch

Country Status (2)

Country Link
EP (1) EP0431461A3 (fr)
DE (1) DE3940228A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4329100A1 (de) * 1992-10-08 1994-04-14 Abb Patent Gmbh Elektrischer Schalter
DE4330715A1 (de) * 1993-09-10 1995-03-16 Kloeckner Moeller Gmbh Elektrischer Schalter mit Kippsprungwerk

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE888879C (de) * 1944-04-20 1953-09-07 Aeg Einrichtung zur Vergleichmaessigung der zum Einschalten von elektrischen Schaltgeraeten aufzuwendenden Kraft
DE1091212B (de) * 1958-09-11 1960-10-20 Siemens Elektrogeraete Gmbh Kniehebelschalter mit thermischer Ausloesung, insbesondere fuer UEberhitzungsschutz von Heisswasserspeichern od. dgl.
FR1224078A (fr) * 1958-12-12 1960-06-22 Dispositif de contacts pour les interrupteurs et disjoncteurs
FR94707E (fr) * 1963-06-27 1969-10-24 Comp Generale Electricite Dispositif a fermeture indépendante pour appareils électriques.
FR2057268A6 (fr) * 1968-08-27 1971-05-21 Continentale Et Garnier
US4480242A (en) * 1983-03-28 1984-10-30 General Electric Company Variable torque contact arm for electric circuit breakers
FR2585177B1 (fr) * 1985-07-19 1987-10-30 Telemecanique Electrique Piece de support de contacts mobiles, notamment pour appareil interrupteur de protection
DE8701048U1 (de) * 1987-01-22 1987-03-19 Siemens AG, 1000 Berlin und 8000 München Schaltschloß für einen Leistungsschalter

Also Published As

Publication number Publication date
DE3940228A1 (de) 1991-06-06
EP0431461A3 (en) 1992-06-03

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