EP0591905B1 - Commutateur électrique - Google Patents

Commutateur électrique Download PDF

Info

Publication number
EP0591905B1
EP0591905B1 EP93116039A EP93116039A EP0591905B1 EP 0591905 B1 EP0591905 B1 EP 0591905B1 EP 93116039 A EP93116039 A EP 93116039A EP 93116039 A EP93116039 A EP 93116039A EP 0591905 B1 EP0591905 B1 EP 0591905B1
Authority
EP
European Patent Office
Prior art keywords
contact
lever
drive rod
stop
contact lever
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
EP93116039A
Other languages
German (de)
English (en)
Other versions
EP0591905A1 (fr
Inventor
Klaus Eppe
Rudolf Sellner
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 EP0591905A1 publication Critical patent/EP0591905A1/fr
Application granted granted Critical
Publication of EP0591905B1 publication Critical patent/EP0591905B1/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
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/002—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00 with provision for switching the neutral conductor

Definitions

  • the invention relates to an electrical switch according to the preamble of claim 1.
  • the invention relates to a neutral disconnector or auxiliary switch in which the contact point for the neutral conductor or the auxiliary switch is actuated by the contact point of the main switch.
  • the opening and closing speed of the contact of the neutral line interruption point or the auxiliary switch is controlled by the speed of the movable contact piece of the circuit breaker. And under certain circumstances, welding phenomena can occur due to a relatively slow opening speed at the neutral contact point or the auxiliary switch.
  • An electrical switch with the features specified in the preamble of claim 1 is e.g. known from EP-A-0 111 662.
  • the object of the invention is to provide a switch of the type mentioned, in which the opening movement is designed so that welding is reliably avoided.
  • the fixed stop is arranged within the switching device such that a certain relatively small distance is present between it and the contact lever when this contact lever is in the switched-on position. This distance causes the so-called overstroke of the contact lever.
  • a spring on the contact lever which acts in the direction of the opening movement of the drive rod, can advantageously be located in the area between the stop and the drive rod;
  • a spring can advantageously be a tension spring.
  • a trigger acts on the first contact lever and the drive rod driven by the first contact lever acts on the second contact lever which is arranged so as to be pivotable.
  • the spring serves as a contact pressure spring by rotating the second contact lever around the point of engagement of the drive rod on the contact lever.
  • the point of application serves as a pivot bearing for the second contact lever, the rotational movement being generated by the spring and a rotation from second fixed contact piece is "prevented”.
  • the second contact lever rotates around the point of contact of the two second contact pieces, since the end of the second contact lever remains stationary with the movable contact piece. If the second contact point is welded, the second contact point is already broken open in this movement section by the two second contact pieces moving against one another, the second movable contact piece rolling on the second fixed contact piece. As soon as the second contact lever bears against the stop, the second contact lever rotates around the stop, driven by the contact spring and the drive rod.
  • the speed at which the second movable contact piece moves away from the second fixed contact piece depends on the distances between the second movable contact piece and the stop on the one hand (first distance) and the stop and the point of engagement of the drive rod on the other hand (second distance).
  • the second movable contact piece will move away from the second fixed contact piece faster than the drive rod moves. If the switch is used as an auxiliary switch, the second movable contact piece will rotate faster than the corresponding first contact piece of the switching device to which the auxiliary switch is assigned. By increasing the speed of the second movable contact piece (opening speed), welding of the contact pieces is reliably avoided.
  • the switch 50 shown in Figure 1 has an approximately T-shaped housing 51, which is composed of two shell-shaped housing parts (not shown in detail); one housing part 52 is open and the cover closing the broadside is not shown.
  • the housing 51 In the lower region (see drawing FIG. 1), that is to say in the region of the fastening plane, which is represented by the dashed line B, the housing 51 has a recess 53 which has a fixed nose 54 and a movable nose 55 indicated by a dashed line. Both lugs 54 and 55 serve to snap the switch onto a top-hat rail.
  • the housing 51 has a T-shape with a type of transverse web 56 and a longitudinal web 57 which is arranged on the side opposite the fastening side B and from which a switching knob 59 rotatably mounted about an axis 58 looks out.
  • an electromagnetic one Release system 60 with which a movable first contact lever 61 can be moved into the open position.
  • a thermal release 62 in the form of a thermal bimetal is provided, which acts on a release lever 63 which pivots the contact lever 61 about an axis not shown in the drawing in FIG. 1.
  • an arc-quenching plate packet 68 is provided, which is assigned to a first contact point (not visible in FIG. 1), to which the first contact lever 61 belongs;
  • a second contact point 69 In the same plane to the left of it, i.e. adjacent to the connecting terminal 66, there is a second contact point 69, with a second contact lever 13, which has a second movable contact piece 12 and cooperates with a second fixed contact piece 11, which on a fixed contact rail 10, the is connected to the terminal 66, is attached.
  • the first contact lever 61, the second contact lever 13 and the second fixed or movable contact piece 11 or 12 are also named without the addition "first" or "second”.
  • This drive rod 17 has a first opening 70 and a second through opening 16, the openings 70 and 16 being matched to one another by their spacing such that when the contact lever is switched off 61 the contact lever 13 after opening the first contact point with the first contact lever 61 in the switched-off position and closes the second contact point 69 first when the switch is turned on.
  • the first contact point which is not shown in FIG. 1 and to which the first contact lever 61 belongs, is known per se.
  • the second contact point will now be shown and explained in more detail with reference to FIGS. 2 to 4.
  • the second contact point thus has a stationary contact rail 10 on which the second fixed contact piece 11 is fastened.
  • the fixed contact piece 11 cooperates with the movable contact piece 12 which is attached to one end of the contact lever 13.
  • the contact lever 13 is bent in itself, the kink angle is not essential to the invention.
  • the end 14 of the contact lever 13 opposite the end with the movable contact piece 12 has a V-shaped bend 15, the concave side of which is on the side of the contact lever 13 on which the movable contact piece 12 is fastened. With this V-shaped bend 15, the end 14 of the contact lever 13 is inserted into the through opening 16 of the drive rod 17, the opening 16 having a rounded boundary wall 18 at one edge, which engages in the concave side of the bend 15.
  • the other boundary edge or boundary wall 18a is adapted to the convex side of the bend 15, so that the contact lever 13 can rotate on the one hand in the opening 16 and on the other hand a useful transmission of the force P (see below) to the contact lever 13 is possible.
  • a pivot bearing point for the contact lever 13 is generated within the drive rod.
  • the other end of which is suspended on a fixed pin 71.
  • the eye 20 simultaneously forms a concave bearing point 22 with the flat side of the contact lever 13 in the region of the transition from the eye 19 to the flat side of the contact lever 13.
  • a fixed stop 23 (see FIG. 1) is provided in the vicinity of the drive rod 17 or the eyelet 20 and has a rounded tip 24.
  • the stop 23 is on the side of the contact lever 13 on which the movable contact piece 12 is located.
  • a distance d is maintained between the bearing point 22 and the rounded tip 24 - in the switched-on state shown in FIG. 1.
  • the distance L1 from the drive rod 17 to the bearing point 22 is smaller than the distance L2 from the bearing point 22 to the movable contact piece 12.
  • the ratio L2 to L1 is called the gear ratio. It is greater than 1 and preferably 2.
  • the drive rod 17 is actuated in the direction of arrow P, which is brought about by the first contact lever 61; due to the tension spring 21, the movable contact piece 12 is pressed onto the fixed contact piece 11 in the switched-on position due to the distance d.
  • the spring 21 searches for the contact lever 13 in order to rotate the bearing point between the bend 15 and the through opening 16 or the rounded tip of the opening 16, the rotation due to the fact that the movable contact piece on the fixed contact piece is prevented.
  • the contact pressure force is thus generated in the switch-on position and in the first time of the switch-off movement.
  • the spring 21 now acts as a tension spring to support the drive movement of the drive rod 17.
  • the transmission ratio L2 / L1> 1 also ensures that in the switched-off state the distance of the movable contact piece 12 from the fixed contact piece 11 is greater than the distance that the drive rod 17th during the switch-off process.
  • the drive rod 17 is moved in the opposite direction of the arrow P, so that the movable contact lever 13 can rotate about the stop 23 until the movable contact piece 12 rests on the fixed contact piece 11. As soon as this is the case, the movable contact lever 13 comes free from the stop 23, which causes the contact lever to overstroke.
  • the opening 70 and the opening 16 are matched to one another such that when the contact opens, the contact lever 61 starts to move, whereas the contact lever 13 only moves into the open position afterwards. This is determined by the distance between the openings 70 and 16, which is defined in or by the drive rod 17, and the distance d between the stop 23 and the movable contact piece 13 (see Figure 2).
  • the distance between the openings 70 and 16 which is defined in or by the drive rod 17, and the distance d between the stop 23 and the movable contact piece 13 (see Figure 2).
  • the contact lever 61 presses on the boundary edge 70a of the opening 70 which is adjacent to the opening 16 and thus fixes the contact lever 13 in the switched-on position, whereby the tension spring can rotate it about the through-opening 16 and the mounting there.

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Air Bags (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Lock And Its Accessories (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Breakers (AREA)

Claims (6)

  1. Commutateur électrique avec un premier ensemble de contact comprenant un premier contact fixe et un premier contact mobile (3) qui coopère avec celui-ci et est monté sur un premier levier à contact pivotant et un deuxième ensemble de contact comprenant un deuxième contact et un deuxième contact mobile (3) qui coopère avec celui-ci et est monté sur un deuxième levier à contact pivotant, qui, par rapport au plan de fixation du commutateur, sont disposés l'un au-dessus de l'autre, le deuxième ensemble à contact étant proche du fond, lesquels ensembles à contact sont ouverts et fermés par un dispositif d'actionnement comprenant une tige d'actionnement commune, caractérisé par le fait que la tige d'actionnement (17) agit sur l'extrémité du deuxième levier à contact (13) éloignée du deuxième contact mobile (12), par le fait qu'entre le deuxième contact mobile (12) et la tige d'actionnement (17), du côté du deuxième levier à contact (13) qui porte le deuxième contact mobile (12), se trouve une butée stationnaire (23) autour de laquelle tourne le deuxième levier à contact (12) lors d'une manoeuvre de commutation et par le fait que les leviers à contact (13, 61) des premier et deuxième ensembles de contact, la butée (23) et la tige d'actionnement (17) sont adaptés les uns aux autres de telle sorte que le deuxième ensemble de contact (12) s'ouvre après le premier ensemble de contact, avec une vitesse supérieure à celle du premier ensemble de contact, et se ferme avant le premier ensemble de contact, le rapport de la première distance (L₂) entre la butée (23) et le contact mobile (12) à la deuxième distance (L₁) entre la butée (23) et le point d'attaque de la tige d'actionnement (17) étant supérieur à 1, de préférence à 2.
  2. Commutateur selon la revendication 1, caractérisé par le fait que la butée (23), dans la position de fermeture du levier à contact (13), est éloigné ou est disposé à une distance (d) du levier à contact (13).
  3. Commutateur selon la revendication 2, caractérisé par le fait qu'un ressort (21) agit sur le levier à contact (13), dans la région entre la butée (23) et la tige d'actionnement (17), ressort dont la force s'exerce dans la direction du déplacement d'ouverture de la tige d'actionnement (17).
  4. Commutateur selon la revendication 3, caractérisé par le fait que le ressort (21) est un ressort de traction.
  5. Commutateur selon l'une des revendications précédentes, caractérisé par le fait qu'un oeillet (20) est aménagé sur le levier à contact (13) par poinçonnage-découpage d'une crevée (19) du côté du levier à contact (13) où se trouve le contact mobile (12), oeillet dans lequel agit le ressort (21).
  6. Commutateur selon la revendication 5, caractérisé par le fait que le raccordement entre l'encoche (19) et le levier à contact (13) qui est voisin du contact mobile (12) est agencé en palier (22) pour la butée (23) et forme ainsi le point de rotation pour le levier à contact (13).
EP93116039A 1992-10-08 1993-10-05 Commutateur électrique Expired - Lifetime EP0591905B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4233853 1992-10-08
DE4233853 1992-10-08
DE4329100 1993-08-30
DE4329100A DE4329100A1 (de) 1992-10-08 1993-08-30 Elektrischer Schalter

Publications (2)

Publication Number Publication Date
EP0591905A1 EP0591905A1 (fr) 1994-04-13
EP0591905B1 true EP0591905B1 (fr) 1996-05-22

Family

ID=25919279

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93116039A Expired - Lifetime EP0591905B1 (fr) 1992-10-08 1993-10-05 Commutateur électrique

Country Status (4)

Country Link
EP (1) EP0591905B1 (fr)
AT (1) ATE138495T1 (fr)
DE (2) DE4329100A1 (fr)
ES (1) ES2090810T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19503530B4 (de) * 1995-02-03 2006-07-06 Aeg Niederspannungstechnik Gmbh & Co Kg Leitungsschutzschalter
DE29701829U1 (de) * 1997-02-03 1997-04-10 Siemens AG, 80333 München Schaltgerät mit Drehantrieb
DE10216371A1 (de) * 2002-04-12 2003-10-23 Abb Patent Gmbh Hilfsschalter
CN118658758B (zh) * 2024-08-20 2024-10-18 成都理工大学 一种具有负载接地放电保护功能的断路器

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH618288A5 (fr) * 1977-08-05 1980-07-15 Weber Ag Fab Elektro
NL192589C (nl) * 1980-01-04 1997-10-03 Abb Componenten B V Schakelautomaat.
EP0054499B1 (fr) * 1980-12-16 1984-06-13 Legrand Disjoncteur à sectionnement de neutre
FR2507002A1 (fr) * 1981-05-27 1982-12-03 Weber Ag Fab Elektro Dispositif de contact pour un interrupteur
DE3242062A1 (de) * 1982-11-13 1984-05-17 Brown, Boveri & Cie Ag, 6800 Mannheim Elektrischer schalter
DD217924A1 (de) * 1983-10-06 1985-01-23 Oppach Schaltelektronik Schaltstueckanordnung fuer ueberlast-schutzschalter
DE3410157A1 (de) * 1984-03-20 1985-09-26 Brown, Boveri & Cie Ag, 6800 Mannheim Elektrischer schalter mit je einer schaltkontaktstelle fuer einen phasenleiter und fuer einen nulleiter
DE3825443A1 (de) * 1988-07-27 1990-02-01 Asea Brown Boveri Elektrisches schaltgeraet
DE3940228A1 (de) * 1989-12-05 1991-06-06 Asea Brown Boveri Schaltwerk fuer einen elektrischen schalter
DE4013840A1 (de) * 1990-04-30 1991-10-31 Felten & Guilleaume Energie Schaltmechanismus fuer niederspannungsschaltgeraete

Also Published As

Publication number Publication date
DE59302676D1 (de) 1996-06-27
EP0591905A1 (fr) 1994-04-13
ATE138495T1 (de) 1996-06-15
DE4329100A1 (de) 1994-04-14
ES2090810T3 (es) 1996-10-16

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