EP1728260B1 - Mecanisme de commutation pour appareil de distribution d'installation electrique - Google Patents

Mecanisme de commutation pour appareil de distribution d'installation electrique Download PDF

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Publication number
EP1728260B1
EP1728260B1 EP05707738A EP05707738A EP1728260B1 EP 1728260 B1 EP1728260 B1 EP 1728260B1 EP 05707738 A EP05707738 A EP 05707738A EP 05707738 A EP05707738 A EP 05707738A EP 1728260 B1 EP1728260 B1 EP 1728260B1
Authority
EP
European Patent Office
Prior art keywords
switch
lever
toggle
point
arm
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.)
Not-in-force
Application number
EP05707738A
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German (de)
English (en)
Other versions
EP1728260A1 (fr
Inventor
Ralf Weber
Peter Pfirrmann
Jürgen Christmann
Klaus-Peter Eppe
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
Original Assignee
ABB AG Germany
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 AG Germany filed Critical ABB AG Germany
Publication of EP1728260A1 publication Critical patent/EP1728260A1/fr
Application granted granted Critical
Publication of EP1728260B1 publication Critical patent/EP1728260B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure

Definitions

  • the invention relates to a switching mechanism for an electrical service switching device, according to the preamble of claim 1.
  • a circuit breaker which is to be considered here by way of example preferred, has a contact point consisting of a fixed and a so-called movable contact piece, which can be closed or opened manually or automatically.
  • the movable contact piece is usually attached to a rotatable about a stationary axis contact lever at one end, wherein at the other end of a toggle linkage connects, which in turn is hingedly connected to the switch knob.
  • the opening of the contact point is effected once by operation of the switch knob, and on the other hand, a thermal release, with which an overcurrent, and an electromagnetic release, with which a short-circuit current can be switched off, provided.
  • the arrangement of the switching mechanism between the two boards has the advantage that the switch lock can be pre-assembled with the boards and the contact lever as well as with the switch between the two boards rotatably fixed switching knob.
  • a simplification of such a switching mechanism can be effected in that a toggle mechanism is provided between the contact lever and the switch knob, which is formed from two mutually pivotable parts, which occupy a first stable position in the on state together with the switch knob and the movable contact lever, the the trigger is spent on a dead center in a second stable position, wherein in the second stable position of the contact lever and thus the movable contact piece are in the open position.
  • the DE 589 921 C shows an electric overcurrent switch with a double toggle lever, which is rotatably mounted on two fixed support points and occupies only a single stable position.
  • the closed position pushes an upwardly turned switch knob the double toggle lever in its stable position against the pressure of a contact spring in the on position.
  • the switch knob falls down and releases the double toggle, so that the contact spring can move the double toggle in its stable position to the open position, thereby opening the contact point.
  • the overcurrent release acts directly on the toggle lever and kinks it up briefly, so that the switch knob can fall down.
  • the double toggle then immediately returns to its stable position and is moved by the contact spring when opening the contact point in the open position.
  • the object of the invention is to simplify a switching mechanism of the type mentioned on, so that the production and beyond the assembly are simplified.
  • the contact point is formed in a circuit breaker or residual current circuit breaker from a fixed and a movable contact piece, wherein the movable contact piece is attached to a pivotally mounted contact lever.
  • the invention can also be applied to such switching devices, in particular motor protection switches, in which a double contact point with two in spaced-apart fixed contact pieces and a contact bridge, are attached to the two movable contact pieces is formed; The transmission can then be arranged between the switch knob on the one hand and the contact bridge on the other. The double contact point is then also a "contact point" in the above sense.
  • the toggle mechanism comprises a with the movable contact piece (single contact or double contact) of the contact point articulated lug and a two leg having brackets, of which one leg of the bracket with the other end of the tab and the other leg of the bracket with the switch knob are hingedly connected, which acts in the case of release of the release lever approximately perpendicular to the toggle mechanism this in the region of the knee joint point towards the second stable position.
  • the release lever is rotatable about the axis of rotation of the switch knob; it is coupled to the trigger with a first arm and acts on the linkage with a second arm.
  • the first arm is approximately perpendicular to the second arm.
  • a projection extending transversely thereto and in the direction of the free end of the leg of the bracket is provided on the tab in the region of the articulation point of the bracket, against which the second arm of the trigger strikes when triggered and so on the knee joint transmission from the first stable position shifted over the overpressure point.
  • the tab may have approximately an L-shape, the longer leg is coupled to the bracket and the contact point and the shorter leg carries the projection.
  • the legs of the stirrup are free of the path of the second arm of the release lever, so that the second arm can pass over the free ends of the legs of the stirrup to the projection without being obstructed by the legs of the stirrup.
  • the leg of the bracket which is coupled to the tab, protrudes into the path of movement of the release lever, so that the loading of the toggle mechanism is not on the tab, but on the bracket.
  • the movable contact piece is mounted on a pivotally movably mounted contact lever, which is a Doppelarmhebel whose one arm is connected to the tab and on the other arm, the movable contact piece is attached.
  • the toggle mechanism runs in its first stable position approximately parallel to the front wall of the switching device.
  • a stop surface is provided in a preferred manner on the tab, with which the tab against the connected with the toggle leg of the bracket applies.
  • the Fig. 1 shows an insight into a part of a circuit breaker 10, wherein the individual components are located in the interior of a cup-shaped housing lower part 11, which is supplemented to form an overall housing with a correspondingly formed also shell-shaped housing part.
  • the housing structure corresponds to the housing structure of the circuit breaker S2 of ABB Stotz-contact GmbH, Heidelberg.
  • a front side 12 connect to both sides each have a front narrow side surface 13 and 14, each in a rear front side 15 and 16 merge at (not shown) each connect a rear narrow side wall, the down in Area of the dashed line 17 are completed at the attachment side by a mounting wall, with which the circuit breaker 10 can be attached to a mounting rail (snapped) (not shown).
  • a switching knob 18 is rotatably mounted about a fixed axis 19, wherein the switching knob 18, the actual handle 20 and approximately diametrically opposite an eye 21 has.
  • the switching handle 20 protrudes through an opening 22 in the front wall through to the outside, whereas the eye 21 is located inside the housing of the switching device.
  • the longitudinal axis of the Switching handle 20 and the connection of the center of the axis 19 with the center of the eye 21 includes a blunt, open to the contact point angle. The distance of the eye 21 and the obtuse angle are dependent on the dimensions of the components described below.
  • a through hole 22 to which a leg 23 of a U-shaped bracket 24 is articulated, the other leg 25 is pivotally connected to one end of a tab 26, at the other free end of a contact lever 27 is hinged to the free end a movable contact piece 28 is attached.
  • This movable contact piece 28 cooperates with a fixed contact piece 29; both form a contact point with each other.
  • the contact lever 27 is a double-arm lever which is pivotable about an axis 40 (see below), wherein the tab 26 is hinged to the one arm 27a and the movable contact piece 28 is attached to the other arm 27b.
  • thermobimetal acts as a thermal release for overcurrents and via a transmission lever, a magnetic release for short-circuit release, whereby a triggering of the switch can be carried out in a manner further below.
  • the tab In the area of the switch knob 18, the tab has an extension 39, see below, which protrudes in the direction of the axis of rotation 19 of the switch knob 18 when the switch is in closed position.
  • this extension 39 d. H. on the tab 26, there is a contact surface 32 which rests against the bracket 23, so that the bracket 23 is held by the tab.
  • the tab can not turn around the bracket 23, because in reverse, the tab over the surface 32 rests against the bracket 23 and is supported on this.
  • the contact surface helps that the toggle mechanism remains in its first stable position (switch-on position).
  • a release lever 33 Mounted about the axis 19 of the switch knob 18 is a release lever 33, which has a first trigger arm 34 and an approximately perpendicular thereto second trigger arm 35 and an extension 36 which on the second arm 35 approximately perpendicular to this and in an arm 34 opposite protruding direction connects, with which the trigger lever 33 is rotatably mounted about the axis 19 of the switch knob 18.
  • the first arm is transverse, d. H. approximately perpendicular to the toggle mechanism in the closed position and approximately perpendicular to the slide 31, so that the slider 31 can rotate the release lever 34 when moving in the direction of arrow P.
  • the tab 26 is approximately triangular in shape with a longer leg 37 and a shorter leg 38; on the shorter leg 38, as shown in Fig. 2 can be seen, a kind of blade, as an extension 39, formed, which projects beyond the pivot point 25 in the opposite direction as the pivot point 30, wherein on this extension 39, the contact surface 32 is formed.
  • a kind of blade as an extension 39, formed, which projects beyond the pivot point 25 in the opposite direction as the pivot point 30, wherein on this extension 39, the contact surface 32 is formed.
  • the contact lever 27 is rotatably mounted about a fixed axis 40, which passes through a slot 41 on the contact lever 27. Between the bearing 40, 41 of the contact lever 27 and the pivot point 30, the force 42 of a compression spring (not shown) on the contact lever and that in a clockwise direction about the axis 40, in the embodiment according to Fig. 2 , In the representation according to the FIGS. 3 and 4 the direction of this force would be drawn in the opposite direction.
  • the slot 41 is aligned so that the contact lever 27 can move freely relative to the axis 40.
  • the slider moves in the direction of arrow P and thus acts on the trigger lever 33, in the illustration according to Fig. 3 clockwise U (see arrow U) and in the illustration according to Fig. 1
  • the release lever After turning the release lever by a certain angle of the arm 35 of the release lever abuts against a projection 43 on the tab 26, which projection 43 is integrally formed approximately at the free end of the leg 38 on the tab and perpendicular to Plane on the viewer to projecting, in the representation according to Fig.
  • Fig. 4 shows the position in which the leg 25 has exceeded the dead center, shows the Fig. 4 ;
  • the Fig. 5 shows the triggering or switch-off, in the bracket 24 assumes a position in which the two legs 23 and 25 span a plane which is approximately perpendicular to the longitudinal extent of the tab 26.
  • the switch is also in a so-called free release position, namely in a position in which switching on of the switch due to the position of the slider 31 and the release lever 33 is prevented.
  • the release lever here designated by the reference numeral 60, is modified from the release lever 33 insofar as the first arm 61 corresponds to the first arm 34, whereas the second arm 62 has an extension 63 has, which forms a Z-shape with the second arm 62 of the free leg 64 of this Z-shape is approximately parallel to the arm 62.
  • a bracket 65 is provided, whose legs 66 and 67, the level 68 of the tab 26 corresponding tab 69 engages and projects into the path of movement of the second arm 62 and the free leg 64, so that when a triggering is made, the second arm 64 does not hit a projection on the tab 68, but the plane 68 superior Part of the stirrup 67; otherwise the triggering process is the same as in the embodiment according to the FIGS. 1 to 5 ,
  • the Fig. 7 shows the execution in the Fig. 6 can be seen as a perspective view, in the direction of arrow VII. It can be seen the arm 62 and the free leg 64 and the leg 67 of the bracket 65th
  • a coil spring 70 is inserted, at the ends of each tangentially or radially projecting arms are arranged, with only the arm 71 can be seen, which is held in a recess 72 of the switch knob 18 ; the other, unspecified arm acts on the release lever in the direction tripping ready position, ie in a clockwise direction in the representation of Fig. 1 so that the spring is always biased. It pushes the switch knob or handle 20 in the off position.
  • the second arm 34 of the release lever 33 has a projection 26a extending in the direction of the rotation axis 19, which engages over the end edge 39a of the extension 39 and is pressed by the spring 70 against the end edge 34a. This ensures that the tab 26 is held and can not escape, so that the toggle 24/26 when switching in the in Fig. 1 shown first stable position and then the contact lever 27 can be brought into the closed position.
  • FIGS. 1 to 7 is the axis of rotation about which the contact lever 27 rotates, a stationary housed in the housing axis 40, in the embodiment according to the Fig. 8 is the contact lever 27 about a rotation axis 80th pivotable, which is guided in a slot-like depression 81 introduced in the housing.
  • the recess 81 extends in the direction of the sliding movement of the pin 80 when switching.
  • the Fig. 1 shows a circuit breaker, wherein the contact lever is formed in two parts.
  • a contact lever member 91 On a support member 90, which is pivotally connected to the toggle mechanism and which consists of insulating material, a contact lever member 91 is fixed, which is made of copper.
  • the contact lever is integrally stamped from copper;
  • the shift lever may be formed in the form of a U-shaped bent part, which consists of copper or at lower currents of steel.
  • the bearing is located in the same places, so that the bearing pin extends transversely through the legs of the U-shape. At the free end of the U-shaped pivot lever, the movable contact piece is attached to the outside of the web of the U-shape.
  • the connecting line between the articulation point 30 and the center of the leg 25 with the line connecting the legs 25 and 23 a acute angle forms;
  • the line between the points 25 and 30 carries the reference numeral S1 and the line between the centers of the legs the numeral S2.
  • an obtuse angle ⁇ 1 is included, which is open in the direction of the contact point.
  • the angle ⁇ 1 becomes zero, and upon further movement of the release lever 33 forms an angle ⁇ 2 , which is open to the front, ie in the opposite direction as the angle ⁇ 1 and then decreases as long until S2 is approximately perpendicular to the line S1.
  • the dead center line is designated T, see Fig. 2 ,
  • the center of the leg 25 is closer to the front, and after a trip wanders the center of the leg 25 relative to the dead center line in the direction of the mounting side of the switching device.

Landscapes

  • Breakers (AREA)
  • Ticket-Dispensing Machines (AREA)
  • Keying Circuit Devices (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Claims (17)

  1. Dispositif de commutation pour un appareillage de commutation d'installation électrique (10) avec un levier de commutation (18) pour l'actionnement manuel de l'appareillage de commutation (10), avec au moins un point de contact comprenant un élément de contact fixe et un autre mobile (28), lequel point de contact peut être un double point de contact, avec un mécanisme à levier coudé situé entre la manette de commutation (18) et l'au moins un élément de contact mobile (28), qui tient le point de contact fermé dans une première position stable, et avec un levier de déclenchement (33) actionné par un déclencheur, qui agit sur le mécanisme à levier coudé de telle façon que le mécanisme à levier coudé passe de sa première position stable (position d'activation) à une deuxième position stable (position de désactivation) en passant par une position de point mort, caractérisé en ce que le mécanisme à levier coudé comprend une languette (26) couplée de façon articulée avec l'élément de contact mobile (28) en un premier point d'articulation (30) et un étrier (24) en forme de U présentant deux bras (23, 25) dont un bras (25) est relié à l'autre extrémité de la languette (26) et l'autre bras (23) à la manette de commutation (18), l'autre bras (23) de l'étrier en forme de U (24) se trouvant dans un trou traversant (22) de l'oeillet (21) de la manette de commutation (18), le centre d'un bras (25) se trouvant, dans la première position stable, plus près d'une paroi de façade du boîtier (12) que la ligne reliant le point d'articulation (30) de la languette (26) au levier de contact (27) portant l'élément de contact mobile (28) et au centre du bras (23), et les deux bras (23, 25) couvrant, dans la deuxième position stable, un plan approximativement perpendiculaire à l'étendue longitudinale de la languette (26), et en ce qu'en cas de déclenchement, le levier de déclenchement (33) est approximativement perpendiculaire au mécanisme à levier coudé pour contraindre celui-ci au niveau du coude en direction de la deuxième position stable.
  2. Dispositif de commutation selon la revendication 1, caractérisé en ce que le levier de déclenchement (33) peut pivoter autour de l'axe de rotation (11) de la manette de commutation (18) et est couplé par un premier bras (34) avec le déclencheur et agit par un deuxième bras (35) sur le mécanisme à levier coudé.
  3. Dispositif de commutation selon la revendication 2, caractérisé en ce que les bras (34, 35) du levier de déclenchement (33) sont approximativement perpendiculaires l'un à l'autre.
  4. Dispositif de commutation selon la revendication 3, caractérisé en ce qu'il est prévu formé sur le bras (35) du levier de déclenchement (33) agissant sur le mécanisme à levier coudé une saillie (36) dépassant dans le sens opposé vers l'autre bras, avec laquelle le levier de déclenchement (33) est supporté de manière à pouvoir pivoter autour de l'axe de pivotement (19) de la manette de commutation (18).
  5. Dispositif de commutation selon l'une des revendications précédentes, caractérisé en ce qu'il est prévu entre la manette de commutation (18) et le levier de déclenchement (33) un ressort de rappel (70) qui contraint en permanence le levier de déclenchement vers la position prête au déclenchement.
  6. Dispositif de commutation selon la revendication 5, caractérisé en ce que le ressort de rappel est un ressort à boudin (70) avec des bras (71) faisant saillie de façon tangente ou légèrement radiale, un bras (71) se mettant en prise sur la manette de commutation (18) et l'autre bras sur le levier de déclenchement (33) en vue de la rotation de celui-ci.
  7. Dispositif de commutation selon l'une des revendications précédentes, caractérisé en ce qu'il est prévu sur la languette (26) au niveau du point d'articulation sur l'étrier ou sur le coude une saillie (43) dépassant perpendiculairement à la direction des extrémités libres des bras de l'étrier (24), qui dépasse dans le trajet de déplacement du deuxième bras (35) du levier de déclenchement (33) et contre laquelle le deuxième bras (35) bute en cas de déclenchement.
  8. Dispositif de commutation selon l'une des revendications précédentes, caractérisé en ce que la languette (26) est approximativement en forme de L ou de triangle, dont le bras le plus long est couplé à l'étrier et au point de contact et dont le bras le plus court porte la saillie.
  9. Dispositif de commutation selon l'une des revendications précédentes, caractérisé en ce que les bras (23, 25) de l'étrier (24) sont écartés du trajet de déplacement du deuxième bras (35) du levier de déclenchement (33).
  10. Dispositif de commutation selon l'une des revendications 1 à 6, caractérisé en ce que le bras (25) de l'étrier (24) qui est couplé avec la languette (26) dépasse dans le trajet de déplacement du levier de déclenchement (33) de telle manière que le levier de déclenchement bute sur le bras de l'étrier pour le déclenchement.
  11. Dispositif de commutation selon l'une des revendications précédentes, caractérisé en ce que l'élément de contact mobile (28) est disposé sur un levier de contact mobile pivotant (27), en ce que le levier de contact est un levier à deux bras dont un bras est relié à la languette (26) et sur le deuxième bras duquel l'élément de contact mobile (28) est fixé.
  12. Dispositif de commutation selon la revendication 11, caractérisé en ce qu'une force de ressort (42) s'exerce dans la zone comprise entre le point d'appui (40) du levier de contact (27) et le point d'articulation de la languette (26) et pousse le levier de contact (27) qui est dans la première position stable du mécanisme à levier coudé, c'est-à-dire dans la position d'activation, en direction de la fermeture.
  13. Dispositif de commutation selon la revendication 12, caractérisé en ce que le point d'appui pour le levier de contact présente un goujon de support fixé de façon stationnaire dans le boîtier et un trou oblong sur le levier de contact.
  14. Dispositif de commutation selon l'une des revendications 1 à 12, caractérisé en ce que le point d'appui pour le levier de contact est formé par un goujon (80) qui est guidé de façon coulissante dans un trou oblong (81) du boîtier.
  15. Dispositif de commutation selon l'une des revendications précédentes, caractérisé en ce que le mécanisme à levier coudé est approximativement parallèle à la paroi de façade du dispositif de commutation dans sa première position stable.
  16. Dispositif de commutation selon l'une des revendications précédentes, caractérisé en ce qu'il est prévu sur la languette (26), pour limiter le trajet du point d'inflexion de l'articulation du point mort à la première position stable, une surface de butée (32) contre laquelle la languette s'appuie avec le bras de l'étrier relié à la manette de commutation de façon à limiter le déplacement de la position de point mort dans la première position stable.
  17. Dispositif de commutation selon l'une des revendications précédentes, caractérisé en ce qu'il est prévu sur le premier bras (34) du levier de déclenchement (33) une saillie (26a) recouvrant le bord d'extrémité (39a) de la prolongation (39) de la languette (26), qui est contrainte en permanence en direction d'un appui contre le bord d'extrémité (39a) du ressort (71).
EP05707738A 2004-03-17 2005-03-15 Mecanisme de commutation pour appareil de distribution d'installation electrique Not-in-force EP1728260B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004012919A DE102004012919A1 (de) 2004-03-17 2004-03-17 Schaltwerk für ein elektrisches Installationsschaltgerät
PCT/EP2005/002737 WO2005091323A1 (fr) 2004-03-17 2005-03-15 Mecanisme de commutation pour appareil de distribution d'installation electrique

Publications (2)

Publication Number Publication Date
EP1728260A1 EP1728260A1 (fr) 2006-12-06
EP1728260B1 true EP1728260B1 (fr) 2009-03-04

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EP05707738A Not-in-force EP1728260B1 (fr) 2004-03-17 2005-03-15 Mecanisme de commutation pour appareil de distribution d'installation electrique

Country Status (5)

Country Link
EP (1) EP1728260B1 (fr)
CN (1) CN1934670A (fr)
AT (1) ATE424619T1 (fr)
DE (2) DE102004012919A1 (fr)
WO (1) WO2005091323A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004055565A1 (de) 2004-11-18 2006-05-24 Abb Patent Gmbh Installationsschaltgerät
DE102004055564B4 (de) 2004-11-18 2022-05-05 Abb Ag Elektrisches Installationsschaltgerät
DE102005029059A1 (de) * 2005-06-23 2006-12-28 Abb Patent Gmbh Schaltgerät, Leitungsschutzschalter und dergleichen
DE102009053012A1 (de) * 2009-11-16 2011-05-19 Abb Ag Elektrisches Installationsschaltgerät
DE102011008832A1 (de) * 2011-01-19 2012-07-19 Abb Ag Installationsschaltgerät
DE102011008829B4 (de) * 2011-01-19 2012-08-09 Abb Ag Installationsschaltgerät
DE102011008831A1 (de) * 2011-01-19 2012-07-19 Abb Ag Istallationsschaltgerät
DE102019209747B3 (de) * 2019-07-03 2020-10-08 Ellenberger & Poensgen Gmbh Schutzschalter

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE589921C (de) * 1933-12-19 Wilhelm Leyhausen Elektromagnetischer UEberstromschalter mit Kniegelenkkontakt
DE1049484B (fr) * 1959-01-29
DE500098C (de) * 1926-10-09 1930-06-18 Wilhelm Leyhausen Elektromagnetischer UEberstromschalter mit Kniehebelkontaktvorrichtung
DE2336222A1 (de) * 1973-07-17 1975-01-30 Baco Const Elect Schaltmechanismus fuer selbstschalter
DE4116454A1 (de) * 1991-05-18 1992-11-19 Licentia Gmbh Mechanismus fuer einen selbstschalter

Also Published As

Publication number Publication date
DE502005006748D1 (de) 2009-04-16
CN1934670A (zh) 2007-03-21
EP1728260A1 (fr) 2006-12-06
DE102004012919A1 (de) 2005-10-20
ATE424619T1 (de) 2009-03-15
WO2005091323A1 (fr) 2005-09-29

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DE10124985A1 (de) Auslösevorrichtung eines Schutzschalters und Schutzschaltersystem

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