EP0505794B1 - Electromagnetic switchgear with deionisation devices - Google Patents

Electromagnetic switchgear with deionisation devices Download PDF

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Publication number
EP0505794B1
EP0505794B1 EP92103912A EP92103912A EP0505794B1 EP 0505794 B1 EP0505794 B1 EP 0505794B1 EP 92103912 A EP92103912 A EP 92103912A EP 92103912 A EP92103912 A EP 92103912A EP 0505794 B1 EP0505794 B1 EP 0505794B1
Authority
EP
European Patent Office
Prior art keywords
housing portion
upper housing
plates
cover
housing part
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
EP92103912A
Other languages
German (de)
French (fr)
Other versions
EP0505794A1 (en
Inventor
Ralph Kriechel
Heinz Saure
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.)
Eaton Industries GmbH
Original Assignee
Kloeckner Moeller GmbH
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Filing date
Publication date
Application filed by Kloeckner Moeller GmbH filed Critical Kloeckner Moeller GmbH
Publication of EP0505794A1 publication Critical patent/EP0505794A1/en
Application granted granted Critical
Publication of EP0505794B1 publication Critical patent/EP0505794B1/en
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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H2009/347—Stationary parts for restricting or subdividing the arc, e.g. barrier plate using lids for closing the arc chamber after assembly
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/042—Application rejection, i.e. preventing improper installation of parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/002—Details of electromagnetic relays particular to three-phase electromagnetic relays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/342—Venting arrangements for arc chutes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/345—Mounting of arc chutes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/36—Metal parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns

Definitions

  • the invention relates to an electromagnetic switching device with an electromagnetic drive arranged in a multi-part housing with externally accessible connecting contacts and with switching contacts accommodated in a switching room and with deionizing devices assigned to each switching contact, with extinguishing plates forming an extinguishing chamber and a commutation plate with end legs bent twice in a U-shape, that Arranged parallel to the longitudinal extent of a contact bridge carrying the movable contacts and the end legs of which are bent essentially parallel to the quenching plates, the deionizing devices being accommodated in a hood-like housing upper part which can be closed by a cover.
  • a switching device with quenching plate arrangement and a commutation plate in the area of the contact bridge with a substantially U-shaped shape, which is accommodated in a housing with a removable cover, has become known, for example, from DE-GM 85 31 352.
  • the quenching plates are inserted into grooves in the housing walls and held in place by means of comb-shaped rubber parts by fitting the cover of the housing.
  • the commutation plates have no holding function with respect to the quenching plates.
  • a switching device is known in which the deionization device is accommodated in a closed upper housing part, that is to say without a removable cover, the extinguishing plates being fastened to the inner wall of the housing, as well as the double U-shaped commutation plate.
  • a switching device is known in which the deionization device is accommodated in a closed upper housing part, that is to say without a removable cover, the extinguishing plates being fastened to the inner wall of the housing, as well as the double U-shaped commutation plate.
  • the deionization devices are in turn housed in a closed upper housing part, the extinguishing plates being formed with elastically deformable projections and being inserted in grooves formed in a plate mounting parallel to the contact bridge and perpendicular to the switching direction of the switching device and being held with a press fit.
  • the plate bearing containing the quenching plates is equipped with a lateral leaf spring, so that the plate bearing is thereby fixed and clamped in the upper housing part.
  • the commutation plate has laterally flat ends which extend parallel to the quenching plates and hook with a projection on the plate holder for the quenching plates, so that the commutation plate is fastened to the plate mounting.
  • the invention has for its object to facilitate the assembly and disassembly of the deionization devices of a switching device and to enable the switching contacts of the switching devices to be replaced without any problems.
  • the electromagnetic switching device of the generic type in such a way that the packages assembled by means of insulating plates to form an extinguishing chamber and used as packages in chambers of the housing upper part are bent by means of the double U-shape End legs of the commutation plates, which press resiliently against the insulating plates of a package of quenching plates protruding at the edge, are pressed against the housing wall of the upper housing part and the opposing packages are each held in the chambers by resilient support of the commutation plate.
  • Extinguishing sheets assembled into a package by means of insulating plates are known as a structural unit for electrical switching devices, as is shown, for example, by DE-PS 1173566.
  • a hood-like upper housing part which can be prefabricated completely equipped with the deionization device and as a whole on the lower housing part of the housing which receives the drive and the switching contacts Switchgear can be put on and taken off again.
  • Essential to the invention is the fixing of the quenching plates forming the quenching chambers in the upper housing part directly by the commutation plates, the end legs of which are bent so that they are compressed after insertion and press resiliently against the insulating plates holding the quenching plates in the package and hold them in the upper part of the housing. Even when the cover of the upper housing part is removed, the deionization device is not changed.
  • the construction according to the invention of the upper housing part which accommodates the deionization device, enables complete assembly from above with the cover removed.
  • the commutation plates with their resilient end legs facilitate and simplify the assembly of the entire deionization device for the switching device.
  • the cover covering the hood-shaped housing upper part serves only as a housing closure, but not for holding or fastening parts of the deionization device.
  • the lid is equipped on its underside with resilient protruding locking tongues with which it snaps into the upper housing part and cannot fall off in this way. In the event of possible disassembly, the latching tongues can be released again from the inside after removing the upper housing part.
  • the entire upper part of the housing including the cover can be removed from the switching device without loosening the wiring, for example to exchange contacts.
  • the upper housing part is divided into quenching chamber regions by means of mutually parallel partition walls, and each of these quenching chamber regions is bridged in the middle by a bridge which extends between the partition walls or partition wall and wall of the housing top part.
  • These bridges serve as supports for the commutation plates.
  • the commutation plates themselves are also in their position by the resilient clamping of the quenching plates in the Upper part of the housing held.
  • Both the bridges and the commutation plates have a push-through hole in the center, through which the protruding latching tongues of the cover can preferably be inserted and locked in the bridges on the edge.
  • switch position indicator which is mounted with the commutation plate, the approximately U-shaped switch position indicator being hung over the commutation plate and being inserted through a correspondingly large opening in the bridge in the upper part of the housing.
  • This switch position indicator is designed so that the switch can not be turned on.
  • the intermediate walls of the upper housing part have insertion slots into which protruding wall webs formed on the underside of the cover engage.
  • the upper housing part preferably has a T-shaped shape in cross section parallel to the contact bridges with two laterally projecting flanges as a support on the lower housing part, it covering the connecting contacts accommodated laterally on the lower housing part with the supporting flanges.
  • the upper housing part is preferably equipped with guide ribs on the sides guided in the lower housing part below the flanges.
  • the guide ribs can be diagonally offset from one another.
  • the upper housing part and the lower housing part can be coded to one another so that they can only be plugged into one another in a certain position.
  • Each is a quenching chamber for blowing out the arc gases Arc blowout openings assigned, which are preferably formed between the upper housing part and cover by corresponding recesses in the upper housing part.
  • connection terminals which are preferably accommodated below the protruding flanges of the upper housing part in the lower housing part, corresponding through holes are provided in the flanges of the upper housing part.
  • the upper part of the housing with the quenching chamber area can be lifted off the switchgear without having to disconnect the connections.
  • the constructive design of hood-shaped, cross-sectionally T-shaped housing upper part and housing lower part with a U-shaped recess for inserting the housing upper part also enables a pleasing shape, which can be emphasized by different colors, whereby the drive area and contact area can be distinguished by two colors.
  • the lower housing part 2 in which the drive and the switching devices are accommodated, is also set off in color from the upper housing part 3, which accommodates the arcing chamber area and comprises the switching room.
  • the side view of the switching device 1 shown in Figure 1 is suitable for the attachment of auxiliary switches.
  • the connecting terminals are arranged on the sides shown in FIGS. 3 and 4 in the lower housing part 2.
  • the terminals 6 are accessible through recesses 60 in the lower housing part.
  • the clamping screws 8 can be actuated via through holes 35 in the upper housing part.
  • the upper housing part 2 sits, see FIG. 1, in a U-shaped recess 20 of the lower housing part 2 and lies with lateral flanges 31, 30 on the two opposite sides of the housing side of the lower housing part 2, which receive the connection contacts.
  • the upper housing part 3 which, see FIG. 2, is T-shaped in cross section with the protruding flanges 30, 31 along two mutually opposite sides, is covered on the upper side with the cover 4, which is continuous in a flat recess on the two T sides 33 of the upper housing part sits and is flush with the top.
  • the opening 40 for the switch position indicator is formed in the center of the housing cover 4.
  • the cover 4 can also be screwed into the corresponding lower screw holes in the lower part of the housing by means of screws 42, see FIG. 5, for which purpose the screws are inserted through holes 41 in the cover 4.
  • vertically extending guide ribs 32a, 32b are provided on the side of the upper housing part 3 below the projecting flanges.
  • grooves are provided in the lower housing part for insertion.
  • Through holes 35 are formed in the overhanging flanges 30, 31 in accordance with the arrangement of the connecting terminals or clamping screws.
  • recesses 34 are provided in the upper part of the flanges as far as the recess 33 receiving the cover 4, so that openings 5 are formed between the cover edge and recess 34 into the interior of the upper housing part, which are used for the escape of the arc gases from the Extinguishing chambers serve.
  • the outer edge 19 of the upper housing part, which also form outer edges 19 of the switching device 1, are preferably rounded, the upper side of the flanges 30, 31 being slightly beveled to the outside.
  • the upper housing part 3 is designed according to FIG.
  • the upper housing part is divided into three arcing chamber areas 9, 10, 11 by two intermediate walls 36, 37.
  • These quenching chamber areas are in turn divided into the chambers 9a, 9b, 10a, 10b and 11a, 11b by the bridges 301, 302, 303 bridging the intermediate walls or housing wall and intermediate wall in the central area.
  • These bridges serve to support the commutation plates.
  • the individual chambers are provided opposite each other with vertically extending projecting ribs 308, between which insertion grooves 307 for the extinguishing plates are formed.
  • the quenching plates are then inserted from above and are held by the insulating plates provided laterally in the region of the projecting ribs 308, which are seated on the ribs 308, while the quenching plates are guided in the grooves 307.
  • the intermediate walls 36, 37 are made relatively thick and have a parallel arrangement in the area of the bridges deep insertion slots 38, 39. Since the intermediate walls 36, 37 end below the recess 33 for inserting the cover in the upper part of the housing, webs 309, 310 are also formed on the intermediate walls to increase the leakage current path between the commutation plates.
  • Push-through openings 311 for the fastening screws 42 of the cover on the lower housing part are provided in two of the mutually opposite intermediate walls and attached webs.
  • Recesses are provided in the middle of the bridges, a large recess 305 being formed in the central bridge in order to accommodate the switch position indicator 17, see FIG. 5.
  • a smaller recess 304, 306 is provided in each of the two outer bridges 301, 303, through which latching tongues of the cover are inserted in order to clamp it on the upper housing part.
  • FIGS. 7a, 7b and 7c show the commutation plate 7 in a front view, a top view and a side view.
  • the commutation plate has a central contact area 76 for resting on the bridges of the upper housing part.
  • the end legs of the commutation plate are bent twice in a U-shape with the legs 71, 72, the end leg 72 being resiliently movable in the direction of the arrow P, see FIG. 7a.
  • the deflecting surface 73a for the arc is formed facing outward.
  • protruding cams 74, 75 are formed on the outer surface of the outer leg 72, which form contact surfaces on the insulating plates of the quenching plates.
  • the commutation plate 7 has the push-through hole 70 for latching cams of the cover.
  • the extinguishing plates 51 are, in the example shown, 4 pieces, in the upper part between two arranged laterally Insulating plates 52 held, in which they are inserted, for example, with corresponding cams.
  • the insulating plates 52 together with the quenching plates 51 form a quenching chamber 50 as a package.
  • Such a package is inserted into the lateral grooves formed by the ribs on the walls of the chamber 9a, 9b, 10a, 10b, 11a, 11b, see FIG. 12, from above hung here, with the insulating plates 52 resting on the ribs on the chamber walls.
  • the switching position indicator 17 made of insulating material is hung over the middle commutation plate 7 and passed through the opening 305, see FIG. 12, of the bridge 302.
  • the switch position indicator 17 is held against the commutation plate 7 by means of the compression spring 18. With a corresponding shifting of the switching bridge 23 according to FIG. 6, the position of the switching indicator 17 in the recess 40 of the cover 4 indicates the switching position, the compression spring 18 being compressed when moving upward.
  • the end leg 72 of the commutation plate presses with its projecting cams 74, 75 against the insulating plates 52 of the package with the extinguishing plates 51 and presses them against the housing wall.
  • the view according to FIG. 10 also shows the configuration of the extinguishing plates 51 which are frayed on the underside in a W-shape 53.
  • FIG. 11 shows the bottom view of the upper housing part 3 with the deionization device inserted, as explained above.
  • FIG. 6 shows the section through the switching device 1 in its entirety with the lower housing part and upper housing part 3 and cover 4.
  • the magnet 200 is accommodated in the center of the lower housing part 2, surrounded by the coil 21, above which the armature 22, which carries the switching bridge 23.
  • the switching movement of the armature 23 is vertical.
  • the contact bridges 24, which are equipped at their ends with the movable contacts 25 to which the fixed contacts 26 are assigned in the lower housing part, are mounted in the switching bridge perpendicular to the switching direction.
  • the connection terminals 6 are accommodated with the clamping screws 8 in corresponding housing chambers of the lower housing part 2.
  • FIG. 1 shows the section through the switching device 1 in its entirety with the lower housing part and upper housing part 3 and cover 4.
  • the switch contact 25, 26 is open and the switch position indicator 17 is shifted with the switch bridge and the contact bridge 24 against the spring force of the spring 18 through the recess 40 of the cover 4 into its upper end position.
  • the commutation plate 7, which rests on the bridge parallel to the contact bridges 24, is however also fixed in its position by webs of the cover 4 projecting on the underside and by clamping onto the insulating plates of the quenching plate packs.
  • the quenching plates are arranged vertically, ie parallel to the switching direction, as are the double U-shaped bent end legs 71, 72 of the commutation plates 7.
  • the arc that forms when the switch contacts 25, 26 are opened is transferred into the by the guide surfaces of the commutation plate Extinguishing plates 51 derived quenching chamber derived, the resulting gases of the arc can flow through the openings 5 at the upper edge between the cover and the upper housing part through the recesses 34.
  • the housing upper part 3 with cover 4 is fixed in the housing lower part 2, as explained above, by means of the screws 42. After loosening these screws 42, the upper part 3, see FIG. 2, can be lifted completely upwards out of the lower housing part 2 of the switching device 1 without any connections or connections having to be released.
  • the connecting terminals are accommodated in the lower housing part in housing chambers which are laterally shielded from the outside, these housing chambers being closed to the inside by the upper housing part 3 used to form chambers.
  • the clamping screws 8 of the terminals 6 then remain accessible through the through holes 39 of the upper housing part.
  • the commutation plate 7 is inserted by compressing the outer end legs of the commutation plate in the direction of the switching axis of the armature in the area of the upper housing part which forms the quenching chambers, the insulating plates of the quenching plate packs forming the counter bearing and the outer legs 72 pressed resiliently against the leg 71, see FIG 7a, press and fix both the commutation plate and the quenching plate packs in the upper housing part 3 on the inner wall.

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  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

An electromagnetic switching apparatus is described having an electromagnetic drive which is arranged in a multi-part housing, having switching contacts which are accommodated in a switching space, and having deionising devices which are allocated to the switching contacts and have arc splitters (51) which form an extinguishing chamber (50), and having an essentially U-shaped commutation plate (7) which is accommodated in a dome-like housing upper part which can be closed by means of a cover (4). The arc splitters, which are assembled by means of insulating plates (52) to form a stack and are inserted into the housing chambers, are pressed and clamped-in in a sprung manner against the wall of the housing upper part by means of end limbs of the commutating plates which are bent in a double U-shape. <IMAGE>

Description

Die Erfindung betrifft ein elektromagnetisches Schaltgerät mit in einem mehrteiligen Gehäuse angeordneten elektromagnetischen Antrieb mit von außen zugänglichen Anschlußkontakten und mit in einem Schaltraum untergebrachten Schaltkontakten und mit jedem Schaltkontakt zugeordneten Deionisierungseinrichtungen mit eine Löschkammer bildenden Löschblechen und einem Kommutierungsblech mit doppelt in U-Form abgebogenen Endschenkeln, das parallel zur Längserstreckung einer die beweglichen Kontakte tragenden Kontaktbrücke angeordnet und dessen Endschenkel im wesentlichen parallel zu den Löschblechen abgebogen sind, wobei die Deionisierungseinrichtungen in einem haubenartigen mittels eines Deckels verschließbaren Gehäuseoberteil untergebracht sind.The invention relates to an electromagnetic switching device with an electromagnetic drive arranged in a multi-part housing with externally accessible connecting contacts and with switching contacts accommodated in a switching room and with deionizing devices assigned to each switching contact, with extinguishing plates forming an extinguishing chamber and a commutation plate with end legs bent twice in a U-shape, that Arranged parallel to the longitudinal extent of a contact bridge carrying the movable contacts and the end legs of which are bent essentially parallel to the quenching plates, the deionizing devices being accommodated in a hood-like housing upper part which can be closed by a cover.

Ein Schaltgerät mit Löschblechanordnung und einem Kommutierungsblech im Bereich der Kontaktbrücke mit im wesentlichen U-förmiger Gestalt, das in einem Gehäuse mit abnehmbaren Deckel untergebracht ist, ist beispielsweise aus dem DE-GM 85 31 352 bekannt geworden. Bei diesem bekannten Schaltgerät werden die Löschbleche in Nuten der Gehäusewände eingesteckt und Mittels kammförmiger Gummiteile durch Aufsetzen des Deckels des Gehäuses festgehalten. Die Kommutierungsbleche haben jedoch keine Haltefunktion in bezug auf die Löschbleche.A switching device with quenching plate arrangement and a commutation plate in the area of the contact bridge with a substantially U-shaped shape, which is accommodated in a housing with a removable cover, has become known, for example, from DE-GM 85 31 352. In this known switching device, the quenching plates are inserted into grooves in the housing walls and held in place by means of comb-shaped rubber parts by fitting the cover of the housing. However, the commutation plates have no holding function with respect to the quenching plates.

Aus der DE-OS 33 02 884 ist ein Schaltgerät bekannt, bei dem die Deionisierungseinrichtung in einem geschlossenen Gehäuseoberteil, also ohne abnehmbaren Deckel, untergebracht ist, wobei die Löschbleche an der Gehäuseinnenwand befestigt sind, ebenso wie das doppelt U-förmig ausgebildete Kommutierungsblech.From DE-OS 33 02 884 a switching device is known in which the deionization device is accommodated in a closed upper housing part, that is to say without a removable cover, the extinguishing plates being fastened to the inner wall of the housing, as well as the double U-shaped commutation plate.

Aus der DE-OS 3302884 ist ein Schaltgerät bekannt, bei dem die Deionisierungseinreichtung in einem geschlossenen Gehäuseoberteil, also ohne abnehmbaren Deckel, untergebracht ist, wobei die Löschbleche an der Gehäuseinnenwand befestigt sind, ebenso wie das doppelt U-förmig ausgebildete Kommutierungsblech.From DE-OS 3302884 a switching device is known in which the deionization device is accommodated in a closed upper housing part, that is to say without a removable cover, the extinguishing plates being fastened to the inner wall of the housing, as well as the double U-shaped commutation plate.

Bei dem Schaltgerät nach der DE-OS 3501423 sind die Deionisierungseinrichtungen wiederum in einem geschlossenen Gehäuseoberteil untergebracht, wobei die Löschbleche mit elastisch verformbaren Vorsprüngen ausgebildet und in in einer Plattenlagerung ausgebildete Nuten parallell zur Kontaktbrücke und senkrecht zur Schaltrichtung des Schaltgerätes eingeschoben und mit Preßsitz gehaltert sind. Die die Löschbleche enthaltende Plattenlagerung ist mit einer seitlichen Blattfeder ausgerüstet, so daß dadurch die Plattenlagerung im Gehäuseoberteil festgelegt und festgeklemmt ist. Das Kommutierungsblech weist seitlich flache Enden auf, die sich parallel zu den Löschblechen erstrecken und mit einem Vorsprung an der Plattenhalterung für die Löschbleche einhaken, so daß das Kommutierungsblech an der Plattenlagerung befestigt ist.In the switching device according to DE-OS 3501423, the deionization devices are in turn housed in a closed upper housing part, the extinguishing plates being formed with elastically deformable projections and being inserted in grooves formed in a plate mounting parallel to the contact bridge and perpendicular to the switching direction of the switching device and being held with a press fit. The plate bearing containing the quenching plates is equipped with a lateral leaf spring, so that the plate bearing is thereby fixed and clamped in the upper housing part. The commutation plate has laterally flat ends which extend parallel to the quenching plates and hook with a projection on the plate holder for the quenching plates, so that the commutation plate is fastened to the plate mounting.

Der Erfindung liegt die Aufgabe zugrunde, die Montage und Demontage der Deionisierungseinrichtungen eines Schaltgerätes zu erleichtern und das Austauschen der Schaltkontakte der Schaltgeräte problemlos zu ermöglichen.The invention has for its object to facilitate the assembly and disassembly of the deionization devices of a switching device and to enable the switching contacts of the switching devices to be replaced without any problems.

Zur Lösung dieser Aufgabe wird vorgeschlagen, das elektromagnetische Schaltgerät der gattungsgemäßen Art in der Weise weiterzubilden, daß die mittels Isolierplatten zu jeweils eine Löschkammer bildenden Paketen montierten und als Pakete in Kammern des Gehäuseoberteiles eingesetzten Löschbleche mittels der doppelt in U-Form abgebogenen Endschenkel der Kommutierungsbleche, die federnd gegen die randseitig vorstehenden Isolierplatten eines Paketes von Löschblechen drücken, gegen die Gehäusewand des Gehäuseoberteiles gedrückt und die einander gegenüberliegenden Pakete in den Kammern jeweils durch federnde Abstützung des Kommutierungsbleches gehalten werden.To solve this problem, it is proposed to further develop the electromagnetic switching device of the generic type in such a way that the packages assembled by means of insulating plates to form an extinguishing chamber and used as packages in chambers of the housing upper part are bent by means of the double U-shape End legs of the commutation plates, which press resiliently against the insulating plates of a package of quenching plates protruding at the edge, are pressed against the housing wall of the upper housing part and the opposing packages are each held in the chambers by resilient support of the commutation plate.

Mittels Isolierplatten zu einem Paket montierte Löschbleche sind als Baueinheit für elektrische Schaltgeräte bekannt, wie zum Beispiel die DE-PS 1173566 zeigt.Extinguishing sheets assembled into a package by means of insulating plates are known as a structural unit for electrical switching devices, as is shown, for example, by DE-PS 1173566.

Erfindungsgemäß wird ein haubenartiges Gehäuseoberteil geschaffen, das komplett mit der Deionisierungseinrichtung ausgerüstet vorgefertigt werden kann und als Ganzes auf das den Antrieb und die Schaltkontakte aufnehmende Gehäuseunterteil des Schaltgerätes aufsetzbar und wieder abnehmbar ist. Erfindungswesentlich ist die Fixierung der die Löschkammern bildenden Löschbleche in dem Gehäuseoberteil unmittelbar durch die Kommutierungsbleche, deren Endschenkel so abgebogen sind, daß sie nach dem Einsetzen zusammengedrückt sind und federnd gegen die die Löschbleche im Paket haltenden Isolierplatten drücken und diese im Gehäuseoberteil festhalten. Auch bei Abnahme des Deckels des Gehäuseoberteils wird die Deionisierungseinrichtung nicht verändert. Der erfindungsgemäße Aufbau des Gehäuseoberteils, das die Deionisierungseinrichtung aufnimmt, ermöglicht eine komplette Montage von oben bei abgenommenem Deckel. Die Kommutierungsbleche mit ihren federnden Endschenkeln erleichtern und vereinfachen die Montage der gesamten Deionisierungseinrichtung für das Schaltgerät.According to the invention, a hood-like upper housing part is created which can be prefabricated completely equipped with the deionization device and as a whole on the lower housing part of the housing which receives the drive and the switching contacts Switchgear can be put on and taken off again. Essential to the invention is the fixing of the quenching plates forming the quenching chambers in the upper housing part directly by the commutation plates, the end legs of which are bent so that they are compressed after insertion and press resiliently against the insulating plates holding the quenching plates in the package and hold them in the upper part of the housing. Even when the cover of the upper housing part is removed, the deionization device is not changed. The construction according to the invention of the upper housing part, which accommodates the deionization device, enables complete assembly from above with the cover removed. The commutation plates with their resilient end legs facilitate and simplify the assembly of the entire deionization device for the switching device.

Vorteilhafte Weiterbildungen der Erfindung sind den Merkmalen der Unteransprüche 2 bis 10 entnehmbar.Advantageous developments of the invention can be found in the features of subclaims 2 to 10.

Der das haubenförmige Gehäuseoberteil abdeckende Deckel dient lediglich als Gehäuseverschluß, jedoch nicht zur Halterung oder Befestigung von Teilen der Deionisierungseinrichtung. Der Deckel ist an seiner Unterseite mit federnden vorstehenden Rastzungen ausgerüstet, mit denen er in das Gehäuseoberteil einrastet und auf diese Weise nicht abfallen kann. Bei einer möglichen Demontage können die Rastzungen nach Abnahme des Gehäuseoberteils von innen her wieder gelöst werden. Das ganze Gehäuseoberteil einschließlich Deckel läßt sich von dem Schaltgerät abnehmen, ohne die Verdrahtung zu lösen, um beispielsweise Kontakte auszutauschen.The cover covering the hood-shaped housing upper part serves only as a housing closure, but not for holding or fastening parts of the deionization device. The lid is equipped on its underside with resilient protruding locking tongues with which it snaps into the upper housing part and cannot fall off in this way. In the event of possible disassembly, the latching tongues can be released again from the inside after removing the upper housing part. The entire upper part of the housing including the cover can be removed from the switching device without loosening the wiring, for example to exchange contacts.

Das Gehäuseoberteil ist mittels zueinander paralleler Zwischenwände in Löschkammerbereiche unterteilt, und jeder dieser Löschkammerbereiche ist mittig von einer Brücke überbrückt, die sich zwischen den Zwischenwänden bzw. Zwischenwand und Wand des Gehäuseoberteils erstreckt. Diese Brücken dienen als Auflager für die Kommutierungsbleche. Die Kommutierungsbleche selbst wiederum werden in ihrer Lage auch durch das federnde Festklemmen der Löschbleche in dem Gehäuseoberteil festgehalten. Sowohl die Brücken als auch die Kommutierungsbleche weisen mittig ein Durchsteckloch auf, durch das in den randseitigen Brücken bevorzugt die vorstehenden Rastzungen des Deckels durchgesteckt und einrasten können. Im Bereich der mittleren Brücke ist bevorzugt eine Schaltstellungsanzeige untergebracht, die mit dem Kommutierungsblech montiert wird, wobei der etwa U-förmige Schaltstellungsanzeiger über das Kommutierungsblech gehängt und durch eine entsprechend große Öffnung der Brücke im Gehäuseoberteil hindurchgesteckt ist. Diese Schaltstellungsanzeige ist so ausgebildet, daß der Schalter hierüber nicht eingeschaltet werden kann.The upper housing part is divided into quenching chamber regions by means of mutually parallel partition walls, and each of these quenching chamber regions is bridged in the middle by a bridge which extends between the partition walls or partition wall and wall of the housing top part. These bridges serve as supports for the commutation plates. The commutation plates themselves are also in their position by the resilient clamping of the quenching plates in the Upper part of the housing held. Both the bridges and the commutation plates have a push-through hole in the center, through which the protruding latching tongues of the cover can preferably be inserted and locked in the bridges on the edge. In the area of the middle bridge there is preferably a switch position indicator which is mounted with the commutation plate, the approximately U-shaped switch position indicator being hung over the commutation plate and being inserted through a correspondingly large opening in the bridge in the upper part of the housing. This switch position indicator is designed so that the switch can not be turned on.

Um den Sperrabstand und die Kriechstrecke zwischen den einzelnen Kommutierungsblechen eines Schaltgerätes zu erhöhen, ist vorgesehen, daß die Zwischenwände des Gehäuseoberteils Einsteckschlitze aufweisen, in welche an dem Deckel unterseitig ausgebildete vorstehende Wandstege eingreifen.In order to increase the blocking distance and the creepage distance between the individual commutation plates of a switching device, it is provided that the intermediate walls of the upper housing part have insertion slots into which protruding wall webs formed on the underside of the cover engage.

Das Gehäuseoberteil weist bevorzugt im Querschnitt parallel zu den Kontaktbrücken eine T-förmige Gestalt mit zwei seitlich überstehenden Flanschen als Auflage auf dem Gehäuseunterteil auf, wobei es mit den Auflageflanschen die seitlich am Gehäuseunterteil untergebrachten Anschlußkontakte überdeckt. Auf diese Weise wird eine geschlossene Kontur des Schaltgerätes erreicht und das Gehäuseoberteil ist von oben her in eine entsprechend U-förmige Ausnehmung des Gehäuseunterteils einsetzbar, wobei es den Schaltraum und die Schaltkontakte überdeckt. Für eine gesicherte Führung und das richtige Einsetzen des Gehäuseoberteils auf das Gehäuseunterteil ist das Gehäuseoberteil bevorzugt an den im Gehäuseunterteil geführten Seiten unterhalb der Flansche mit Führungsrippen ausgestattet. Die Führungsrippen können diagonal gegeneinander versetzt sein. Darüber hinaus kann das Gehäuseoberteil und das Gehäuseunterteil zueinander kodiert sein, so daß sie nur in einer bestimmten Stellung ineinander steckbar sind.The upper housing part preferably has a T-shaped shape in cross section parallel to the contact bridges with two laterally projecting flanges as a support on the lower housing part, it covering the connecting contacts accommodated laterally on the lower housing part with the supporting flanges. In this way, a closed contour of the switching device is achieved and the upper housing part can be inserted from above into a correspondingly U-shaped recess in the lower housing part, covering the switching space and the switching contacts. For secure guidance and the correct insertion of the upper housing part onto the lower housing part, the upper housing part is preferably equipped with guide ribs on the sides guided in the lower housing part below the flanges. The guide ribs can be diagonally offset from one another. In addition, the upper housing part and the lower housing part can be coded to one another so that they can only be plugged into one another in a certain position.

Zum Ausblasen der Lichtbogengase sind jeder Löschkammer Lichtbogenausblasöffnungen zugeordnet, die bevorzugt zwischen Gehäuseoberteil und Deckel durch entsprechende Ausnehmungen im Gehäuseoberteil ausgebildet sind.Each is a quenching chamber for blowing out the arc gases Arc blowout openings assigned, which are preferably formed between the upper housing part and cover by corresponding recesses in the upper housing part.

Um die Klemmschrauben für die Anschlußklemmen zu betätigen, die bevorzugt unterhalb der überstehenden Flansche des Gehäuseoberteils im Gehäuseunterteil untergebracht sind, sind entsprechende Durchgangsbohrungen in den Flanschen des Gehäuseoberteils vorgesehen.In order to actuate the clamping screws for the connection terminals, which are preferably accommodated below the protruding flanges of the upper housing part in the lower housing part, corresponding through holes are provided in the flanges of the upper housing part.

Das Gehäuseoberteil mit Löschkammerbereich läßt sich von dem Schaltgerät abheben, ohne daß Anschlüsse gelöst werden müssen. Die konstruktive Gestaltung von haubenförmigen, im Querschnitt betrachtet T-förmigen Gehäuseoberteil und Gehäuseunterteil mit U-förmiger Ausnehmung zum Einsetzen des Gehäuseoberteils ermöglicht darüber hinaus eine gefällige Form, die durch unterschiedliche Farbgebung noch hervorgehoben werden kann, wobei Antriebsbereich und Kontaktbereich durch Zweifarbigkeit unterschieden werden können.The upper part of the housing with the quenching chamber area can be lifted off the switchgear without having to disconnect the connections. The constructive design of hood-shaped, cross-sectionally T-shaped housing upper part and housing lower part with a U-shaped recess for inserting the housing upper part also enables a pleasing shape, which can be emphasized by different colors, whereby the drive area and contact area can be distinguished by two colors.

Die Erfindung wird in der Zeichnung anhand eines Ausführungsbeispieles erläutert. Es zeigen

Figur 1
Seitenansicht eines elektromagnetischen Schaltgerätes
Figur 2
perspektivische Ansicht des Gehäuseoberteils nach Figur 1
Figur 3,4,5
die Ansichten R, S und T nach Figur 1
Figur 6
den Querschnitt gemäß CC von Figur 5
Figur 7a,b,c
drei Ansichten des Kommutierungsbleches
Figur 8
die Aufsicht auf das Gehäuseoberteil nach Figur 2 mit teilweise abgenommem Deckel
Figur 9
die Ansicht gemäß Schnitt BG nach Figur 8
Figur 10
die Ansicht gemäß Schnitt AA nach Figur 9
Figur 11
die Unteransicht des Gehäuseoberteils nach Figur 2 und 8
Figur 12
die Aufsicht auf das Gehäuseoberteil nach Figur 2 bzw. 8 ohne Deckel und ohne Deionisierungseinrichtungen.
The invention is explained in the drawing using an exemplary embodiment. Show it
Figure 1
Side view of an electromagnetic switching device
Figure 2
Perspective view of the upper housing part according to FIG. 1
Figure 3,4,5
the views R, S and T of Figure 1
Figure 6
the cross section according to CC of Figure 5
Figure 7a, b, c
three views of the commutation plate
Figure 8
the supervision of the upper housing part according to Figure 2 with the cover partially removed
Figure 9
the view according to section BG of Figure 8
Figure 10
the view according to section AA of Figure 9
Figure 11
the bottom view of the upper housing part according to Figures 2 and 8
Figure 12
the supervision of the upper housing part according to Figure 2 or 8 without cover and without deionization.

Bei dem Schaltgerät 1 nach Figur 1 ist das Gehäuseunterteil 2, in dem der Antrieb und die Schalteinrichtungen untergebracht sind, auch farblich von dem von oben aufgesetzten Gehäuseoberteil 3, das den Löschkammerbereich aufnimmt und den Schaltraum umfaßt, abgesetzt. Die dargestellte Seitenansicht des Schaltgerätes 1 nach Figur 1 ist für den Anbau von Hilfsschaltern geeignet. Die Anschlußklemmen sind an den in den Figuren 3 und 4 dargestellten Seiten im Gehäuseunterteil 2 angeordnet. Die Anschlußklemmen 6 sind durch Ausnehmungen 60 im Gehäuseunterteil zugänglich. Die Klemmschrauben 8 sind über Durchsteckbohrungen 35 im Gehäuseoberteil betätigbar. Das Gehäuseoberteil 2 sitzt, siehe Figur 1, in einer U-förmigen Ausnehmung 20 des Gehäuseunterteils 2 und liegt mit seitlichen Flanschen 31, 30 auf den beiden einander gegenüberliegenden und die Anschlußkontakte aufnehmenden Gehäuseseiten des Gehäuseunterteils 2 auf.In the switching device 1 according to FIG. 1, the lower housing part 2, in which the drive and the switching devices are accommodated, is also set off in color from the upper housing part 3, which accommodates the arcing chamber area and comprises the switching room. The side view of the switching device 1 shown in Figure 1 is suitable for the attachment of auxiliary switches. The connecting terminals are arranged on the sides shown in FIGS. 3 and 4 in the lower housing part 2. The terminals 6 are accessible through recesses 60 in the lower housing part. The clamping screws 8 can be actuated via through holes 35 in the upper housing part. The upper housing part 2 sits, see FIG. 1, in a U-shaped recess 20 of the lower housing part 2 and lies with lateral flanges 31, 30 on the two opposite sides of the housing side of the lower housing part 2, which receive the connection contacts.

Das Gehäuseoberteil 3, das, siehe Figur 2, im Querschnitt T-förmig mit den überstehenden Flanschen 30, 31 längs zweier einander gegenüberliegender Seiten ausgebildet ist, ist oberseitig mit dem Deckel 4 abgedeckt, der zu den beiden T-Seiten durchgehend in einer flachen Ausnehmung 33 des Gehäuseoberteiles aufsitzt und bündig mit der Oberseite abschließt. Im Gehäusedeckel 4 ist mittig die Öffnung 40 für den Schaltstellungsanzeiger ausgebildet. Der Deckel 4 kann zudem mittels Schrauben 42, siehe Figur 5, im Gehäuseunterteil in entsprechenden Schraublöchern festgeschraubt werden, wozu die Schrauben durch Löcher 41 im Deckel 4 eingeführt werden. Für die richtige Positionierung des Gehäuseoberteils 3 im Gehäuseunterteil 2 sind seitlich am Gehäuseoberteil 3 unterhalb der überkragenden Flansche vertikal verlaufenden Führungsrippen 32a, 32b, bevorzugt gegeneinander diagonal versetzt, vorgesehen. Diesen Führungsrippen entsprechend sind Nuten im Gehäuseunterteil zum Einführen vorgesehen. In den überkragenden Flanschen 30, 31 sind entsprechend der Anordnung der Anschlußklemmen bzw. Klemmschrauben Durchgangslöcher 35 ausgebildet. Des weiteren sind ausgehend vom Bereich dieser Durchgangslöcher Ausnehmungen 34 im Oberteil der Flansche bis an die den Deckel 4 aufnehmende Ausnehmung 33 vorgesehen, so daß zwischen Deckelrand und Ausnehmung 34 in das Innere des Gehäuseoberteil reichende Öffnungen 5 gebildet sind, die zum Austreten der Lichtbogengase aus den Löschkammern dienen. Die Außenkante 19 des Gehäuseoberteils, die zugleich Außenkanten 19 des Schaltgerätes 1 bilden, sind bevorzugt abgerundet ausgebildet, wobei die Oberseite der Flansche 30, 31 leicht abgeschrägt nach außen verläuft.The upper housing part 3, which, see FIG. 2, is T-shaped in cross section with the protruding flanges 30, 31 along two mutually opposite sides, is covered on the upper side with the cover 4, which is continuous in a flat recess on the two T sides 33 of the upper housing part sits and is flush with the top. The opening 40 for the switch position indicator is formed in the center of the housing cover 4. The cover 4 can also be screwed into the corresponding lower screw holes in the lower part of the housing by means of screws 42, see FIG. 5, for which purpose the screws are inserted through holes 41 in the cover 4. For the correct positioning of the upper housing part 3 in the lower housing part 2, vertically extending guide ribs 32a, 32b, preferably diagonally offset from one another, are provided on the side of the upper housing part 3 below the projecting flanges. Corresponding to these guide ribs, grooves are provided in the lower housing part for insertion. Through holes 35 are formed in the overhanging flanges 30, 31 in accordance with the arrangement of the connecting terminals or clamping screws. Furthermore, starting from the area of these through holes, recesses 34 are provided in the upper part of the flanges as far as the recess 33 receiving the cover 4, so that openings 5 are formed between the cover edge and recess 34 into the interior of the upper housing part, which are used for the escape of the arc gases from the Extinguishing chambers serve. The outer edge 19 of the upper housing part, which also form outer edges 19 of the switching device 1, are preferably rounded, the upper side of the flanges 30, 31 being slightly beveled to the outside.

Für die Aufnahme der Deionisierungseinrichtungen ist das Gehäuseoberteil 3 gemäß Figur 12 in der Aufsicht dargestellt ausgebildet. Bei abgenommenen Deckel ist das Gehäuseoberteil durch zwei Zwischenwände 36, 37 in drei Löschkammerbereiche 9, 10, 11 unterteilt. Diese Löschkammerbereiche sind wiederum in die Kammern 9a, 9b, 10a, 10b und 11a, 11b durch die im mittleren Bereich die Zwischenwände bzw. Gehäusewand und Zwischenwand überbrückenden Brücken 301, 302, 303 unterteilt. Diese Brücken dienen der Auflage der Kommutierungsbleche. Die einzelnen Kammern sind einander gegenüberliegend mit vertikal verlaufenden vorstehenden Rippen 308 versehen, zwischen denen Einstecknuten 307 für die Löschbleche gebildet sind. Die Löschbleche werden dann von oben eingesteckt und durch die die Löschbleche seitlich im Bereich der vorstehenden Rippen 308 vorgesehenen Isolierplatten gehalten, die auf den Rippen 308 aufsitzen, während die Löschbleche in den Nuten 307 geführt sind. Die Zwischenwände 36, 37 sind relativ dick ausgeführt und weisen im Bereich der Brücken parallel zu diesen verlaufend tiefe Einsteckschlitze 38, 39 auf. Da die Zwischenwände 36, 37 unterhalb der Ausnehmung 33 zum Einsetzen des Deckels im Gehäuseoberteil enden, sind zur Erhöhung des Kriechstromweges zwischen den Kommutierungsblechen noch Stege 309, 310 auf den Zwischenwänden ausgebildet. In zwei der einander gegenüberliegenden Zwischenwänden und aufgesetzten Stege sind Durchstecköffnungen 311 für die Befestigungsschrauben 42 des Deckels am Gehäuseunterteil vorgesehen. In den Brücken sind mittig Ausnehmungen vorgesehen, wobei in der mittleren Brücke eine große Ausnehmung 305 ausgebildet ist, um den Schaltstellungsanzeiger 17, siehe Figur 5, aufzunehmen. In den beiden äußeren Brücken 301, 303 ist jeweils eine kleinere Ausnehmung 304, 306 vorgesehen, durch welche Rastzungen des Deckels durchgesteckt werden, um diesen am Gehäuseoberteil anzuklemmen.For the reception of the deionization devices, the upper housing part 3 is designed according to FIG. When the cover is removed, the upper housing part is divided into three arcing chamber areas 9, 10, 11 by two intermediate walls 36, 37. These quenching chamber areas are in turn divided into the chambers 9a, 9b, 10a, 10b and 11a, 11b by the bridges 301, 302, 303 bridging the intermediate walls or housing wall and intermediate wall in the central area. These bridges serve to support the commutation plates. The individual chambers are provided opposite each other with vertically extending projecting ribs 308, between which insertion grooves 307 for the extinguishing plates are formed. The quenching plates are then inserted from above and are held by the insulating plates provided laterally in the region of the projecting ribs 308, which are seated on the ribs 308, while the quenching plates are guided in the grooves 307. The intermediate walls 36, 37 are made relatively thick and have a parallel arrangement in the area of the bridges deep insertion slots 38, 39. Since the intermediate walls 36, 37 end below the recess 33 for inserting the cover in the upper part of the housing, webs 309, 310 are also formed on the intermediate walls to increase the leakage current path between the commutation plates. Push-through openings 311 for the fastening screws 42 of the cover on the lower housing part are provided in two of the mutually opposite intermediate walls and attached webs. Recesses are provided in the middle of the bridges, a large recess 305 being formed in the central bridge in order to accommodate the switch position indicator 17, see FIG. 5. A smaller recess 304, 306 is provided in each of the two outer bridges 301, 303, through which latching tongues of the cover are inserted in order to clamp it on the upper housing part.

In den Figuren 7a, 7b und 7c ist das Kommutierungsblech 7 in Vorderansicht, Aufsicht und Seitenansicht dargestellt. Das Kommutierungsblech weist einen mittleren Auflagebereich 76 zum Aufliegen auf den Brücken des Gehäuseoberteiles auf. Die Endschenkel des Kommutierungsbleches sind doppelt U-förmig mit den Schenkeln 71, 72 abgebogen, wobei der Endschenkel 72 federnd in Pfeilrichtung P, siehe Figur 7a, bewegbar ist. Im Bereich der U-förmigen Abbiegung 73 ist nach außen gerichtet die Ableitfläche 73a für den Lichtbogen ausgebildet. An den äußeren Endschenkeln 72 sind randseitig vorstehende Nocken 74, 75 ausgebildet, und zwar an der Außenfläche des Außenschenkels 72, die Anlageflächen an den Isolierplatten der Löschbleche bilden. Im mittleren Auflagebereich 76 weist das Kommutierungsblech 7 das Durchsteckloch 70 für Rastnocken des Deckels auf.FIGS. 7a, 7b and 7c show the commutation plate 7 in a front view, a top view and a side view. The commutation plate has a central contact area 76 for resting on the bridges of the upper housing part. The end legs of the commutation plate are bent twice in a U-shape with the legs 71, 72, the end leg 72 being resiliently movable in the direction of the arrow P, see FIG. 7a. In the area of the U-shaped bend 73, the deflecting surface 73a for the arc is formed facing outward. On the outer end legs 72 protruding cams 74, 75 are formed on the outer surface of the outer leg 72, which form contact surfaces on the insulating plates of the quenching plates. In the middle contact area 76, the commutation plate 7 has the push-through hole 70 for latching cams of the cover.

In den Figuren 8 bis 11 ist die Ausrüstung des Gehäuseoberteiles 3 mit Deckel 4 mit den Deionisierungseinrichtungen in verschiedenen Ansichten dargestellt. Die Löschbleche 51 sind, in dem gezeigten Beispiel 4 Stück, im oberen Teil zwischen zwei seitlich angeordneten Isolierplatten 52 gehaltert, in die sie beispielsweise mit entsprechenden Nocken eingesteckt sind. Die Isolierplatten 52 bilden mit den Löschblechen 51 jeweils als Paket eine Löschkammer 50. Ein derartiges Paket wird in die seitlichen von den Rippen gebildeten Nuten an den Wänden der Kammer 9a, 9b, 10a, 10b, 11a, 11b, siehe Figur 12, von oben her eingehängt, wobei die Isolierplatten 52 auf den Rippen an den Kammerwänden aufliegen. Das über die jeweilige Brücke 301, 302, 303 des Gehäuseoberteiles aufgelegte Kommutierungsblech 7 drückt mit seinen äußeren Endschenkeln 72, die sich parallel zu den in das Gehäuseoberteil 3 eingehängten Löschblechen 51 erstrecken, gegen die randseitig vorstehenden Isolierplatten 52 der Pakete und drückt diese in die Kammern und gegen die Gehäusewand des Gehäuseoberteils 3. Auf diese Weise werden jeweils die einander gegenüberliegenden Pakete der Löschbleche der Kammern 9a, 9b bzw. 10a, 10b und 11a, 11b durch federnde Abstützung des Kommutierungsbleches gehalten. Über das mittlere Kommutierungsblech 7 ist der Schaltstellungsanzeiger 17 aus isolierendem Material übergehängt und durch die Öffnung 305, siehe Figur 12, der Brücke 302 hindurchgeführt. Der Schaltstellungsanzeiger 17 wird gegen das Kommutierungsblech 7 mittels der Druckfeder 18 gehalten. Bei entsprechendem Verschieben der Schaltbrücke 23 gemäß Figur 6 zeigt die Stellung des Schaltanzeigers 17 in der Ausnehmung 40 des Deckels 4 die Schaltstellung an, wobei die Druckfeder 18 bei Bewegung nach oben zusammengedrückt wird.In Figures 8 to 11, the equipment of the upper housing part 3 with cover 4 with the deionization devices is shown in different views. The extinguishing plates 51 are, in the example shown, 4 pieces, in the upper part between two arranged laterally Insulating plates 52 held, in which they are inserted, for example, with corresponding cams. The insulating plates 52 together with the quenching plates 51 form a quenching chamber 50 as a package. Such a package is inserted into the lateral grooves formed by the ribs on the walls of the chamber 9a, 9b, 10a, 10b, 11a, 11b, see FIG. 12, from above hung here, with the insulating plates 52 resting on the ribs on the chamber walls. The commutation plate 7 placed over the respective bridge 301, 302, 303 of the upper housing part presses with its outer end legs 72, which extend parallel to the extinguishing plates 51 suspended in the upper housing part 3, against the insulating plates 52 of the packets projecting on the edge and presses them into the chambers and against the housing wall of the upper housing part 3. In this way, the mutually opposite packs of the quenching plates of the chambers 9a, 9b or 10a, 10b and 11a, 11b are held by resilient support of the commutation plate. The switching position indicator 17 made of insulating material is hung over the middle commutation plate 7 and passed through the opening 305, see FIG. 12, of the bridge 302. The switch position indicator 17 is held against the commutation plate 7 by means of the compression spring 18. With a corresponding shifting of the switching bridge 23 according to FIG. 6, the position of the switching indicator 17 in the recess 40 of the cover 4 indicates the switching position, the compression spring 18 being compressed when moving upward.

Wie aus der Aufsicht nach Figur 8 ersichtlich, drückt der Endschenkel 72 des Kommutierungsbleches mit seinen vorstehenden Nocken 74, 75 gegen die Isolierplatten 52 des Paketes mit den Löschblechen 51 und drückt diese gegen die Gehäusewand.As can be seen from the supervision according to FIG. 8, the end leg 72 of the commutation plate presses with its projecting cams 74, 75 against the insulating plates 52 of the package with the extinguishing plates 51 and presses them against the housing wall.

In der Schnittansicht nach Figur 10 wird ersichtlich, wie der Deckel 4 mit den unterseitig ausgebildeten vorstehenden Rastzungen 43, 44 durch die Ausnehmungen 70 der Kommutierungsbleche und die Ausnehmungen 304, 306 der Brücken des Gehäuses hindurchgreift und an dem Gehäuseoberteil eingerastet ist. Im Bereich der Zwischenwände 36, 37 weist der Deckel unterseitig vorstehende Wandstege 45, 46 auf, mit denen er in die schlitzförmigen Ausnehmungen 38, 39 der Zwischenwände eingreift, wodurch die Kriechstrecke zwischen den Kommutierungsblechen erhöht wird.In the sectional view according to FIG. 10 it can be seen how the cover 4 with the protruding tongues 43, 44 formed on the underside reaches through the recesses 70 of the commutation plates and the recesses 304, 306 of the bridges of the housing and is latched onto the upper housing part. In the area of the intermediate walls 36, 37 the Cover on the underside projecting wall webs 45, 46 with which it engages in the slot-shaped recesses 38, 39 of the intermediate walls, whereby the creepage distance between the commutation plates is increased.

In der Ansicht gemäß Figur 10 wird auch die Konfiguration der Löschbleche 51 ersichtlich, die unterseitig W-förmig 53 ausgefranst sind.The view according to FIG. 10 also shows the configuration of the extinguishing plates 51 which are frayed on the underside in a W-shape 53.

Figur 11 zeigt die Unteransicht auf das Gehäuseoberteil 3 mit eingesetzter Deionisierungseinrichtung, wie vorangehend erläutert.FIG. 11 shows the bottom view of the upper housing part 3 with the deionization device inserted, as explained above.

In der Figur 6 ist der Schnitt durch das Schaltgerät 1 in seiner Gänze mit Gehäuseunterteil und Gehäuseoberteil 3 und Deckel 4 dargestellt. Im Gehäuseunterteil 2 ist mittig der Magnet 200 untergebracht, umgeben von der Spule 21, darüber der Anker 22, der die Schaltbrücke 23 trägt. Die Schaltbewegung des Ankers 23 ist vertikal. In der Schaltbrücke sind senkrecht zur Schaltrichtung die Kontaktbrücken 24 gelagert, die an ihren Enden mit den beweglichen Kontakten 25 ausgerüstet sind, denen im Gehäuseunterteil die Festkontakte 26 zugeordnet sind. Seitlich sind die Anschlußklemmen 6 mit den Klemmschrauben 8 in entsprechenden Gehäusekammern des Gehäuseunterteils 2 untergebracht. In dem dargestellten Beispiel nach Figur 6 ist der Schaltkontakt 25, 26 geöffnet und der Schaltstellungsanzeiger 17 ist mit der Schaltbrücke und der Kontaktbrücke 24 entgegen der Federkraft der Feder 18 durch die Ausnehmung 40 des Deckels 4 in seine obere Endlage verschoben. Das Kommutierungsblech 7, das auf der Brücke parallel zu den Kontaktbrücken 24 aufliegt, ist jedoch auch durch unterseitig vorstehende Stege des Deckels 4 und durch das Festklemmen an den Isolierplatten der Löschblechpakete in seiner Lage fixiert. Die Löschbleche sind vertikal, d.h. parallel zur Schaltrichtung angeordnet, ebenso die doppelt U-förmig abgebogenen Endschenkel 71, 72 der Kommutierungsbleche 7. Der beim Öffnen der Schaltkontakte 25, 26 sich bildende Lichtbogen wird über die Leitflächen des Kommutierungsbleches in die von den Löschblechen 51 gebildete Löschkammer abgeleitet, wobei die entstehenden Gase der Lichtbogen durch die Öffnungen 5 am oberen Rand zwischen Deckel und Gehäuseoberteil durch die Ausnehmungen 34 ausströmen können. Das Gehäuseoberteil 3 mit Deckel 4 wird in dem Gehäuseunterteil 2, wie vorangehend erläutert, mittels der Schrauben 42 fixiert. Nach Lösen dieser Schrauben 42 kann das Oberteil 3, siehe Figur 2, komplett nach oben aus dem Gehäuseunterteil 2 des Schaltgerätes 1 abgehoben werden, ohne daß irgendwelche Anschlüsse oder Verbindungen gelöst werden müßten. Die Anschlußklemmen sind in dem Gehäuseunterteil in Gehäusekammern, die nach außen seitlich abgeschirmt sind, untergebracht, wobei diese Gehäusekammern ins Innere hin durch das eingesetzte Gehäuseoberteil 3 zu Kammern geschlossen werden. Die Klemmschrauben 8 der Anschlußklemmen 6 bleiben dann durch die Durchstecklöcher 39 des Gehäuseoberteils von oben her zugänglich. Das Kommutierungsblech 7 ist unter Zusammendrücken der äußeren Endschenkel des Kommutierungsbleches in Richtung auf die Schaltachse des Ankers in den die Löschkammern bildenden Bereich des Gehäuseoberteils eingesetzt, wobei die Isolierplatten der Löschblechpakete das Gegenlager bilden und die federnd gegen den Schenkel 71 gedrückten äußeren Schenkel 72, siehe Figur 7a, sowohl das Kommutierungsblech als auch die Löschblechpakete in dem Gehäuseoberteil 3 an der Innenwandung andrücken und fixieren.FIG. 6 shows the section through the switching device 1 in its entirety with the lower housing part and upper housing part 3 and cover 4. The magnet 200 is accommodated in the center of the lower housing part 2, surrounded by the coil 21, above which the armature 22, which carries the switching bridge 23. The switching movement of the armature 23 is vertical. The contact bridges 24, which are equipped at their ends with the movable contacts 25 to which the fixed contacts 26 are assigned in the lower housing part, are mounted in the switching bridge perpendicular to the switching direction. Laterally, the connection terminals 6 are accommodated with the clamping screws 8 in corresponding housing chambers of the lower housing part 2. In the example shown in FIG. 6, the switch contact 25, 26 is open and the switch position indicator 17 is shifted with the switch bridge and the contact bridge 24 against the spring force of the spring 18 through the recess 40 of the cover 4 into its upper end position. The commutation plate 7, which rests on the bridge parallel to the contact bridges 24, is however also fixed in its position by webs of the cover 4 projecting on the underside and by clamping onto the insulating plates of the quenching plate packs. The quenching plates are arranged vertically, ie parallel to the switching direction, as are the double U-shaped bent end legs 71, 72 of the commutation plates 7. The arc that forms when the switch contacts 25, 26 are opened is transferred into the by the guide surfaces of the commutation plate Extinguishing plates 51 derived quenching chamber derived, the resulting gases of the arc can flow through the openings 5 at the upper edge between the cover and the upper housing part through the recesses 34. The housing upper part 3 with cover 4 is fixed in the housing lower part 2, as explained above, by means of the screws 42. After loosening these screws 42, the upper part 3, see FIG. 2, can be lifted completely upwards out of the lower housing part 2 of the switching device 1 without any connections or connections having to be released. The connecting terminals are accommodated in the lower housing part in housing chambers which are laterally shielded from the outside, these housing chambers being closed to the inside by the upper housing part 3 used to form chambers. The clamping screws 8 of the terminals 6 then remain accessible through the through holes 39 of the upper housing part. The commutation plate 7 is inserted by compressing the outer end legs of the commutation plate in the direction of the switching axis of the armature in the area of the upper housing part which forms the quenching chambers, the insulating plates of the quenching plate packs forming the counter bearing and the outer legs 72 pressed resiliently against the leg 71, see FIG 7a, press and fix both the commutation plate and the quenching plate packs in the upper housing part 3 on the inner wall.

Claims (10)

  1. Electromagnetic switchgear having an electromagnetic drive which is arranged in a multipart housing, having connecting contacts which are accessible from without and having switching contacts which are accommodated in a switch chamber and having de-ionizing devices which are associated with each switching contact and have de-ion plates which form an extinction chamber, and a commutating plate which has end limbs that are bent over twice in the shape of a U and is arranged so as to be parallel to the longitudinal extension of a contact bridge carrying the movable contacts and the end limbs of which commutating plate are bent over so as to be substantially parallel to the de-ion plates, with the de-ionizing devices being accommodated in a hood-like upper housing portion which can be closed by means of a cover, characterised in that the de-ion plates (51), which are mounted by means of insulating plates (52) in stacks forming a respective extinction chamber (50) and are inserted as stacks in chambers (9a,b; 10a,b; 11a,b) of the upper housing portion (3), are pressed against the housing wall of the upper housing portion (3) by means of the end limbs (72, 71) of the commutating plates (7) that are bent over twice in the shape of a U and press resiliently against the insulating plates (52) protruding on the edge side of a stack of de-ion plates (51), and the stacks which lie opposite each other are held in the chambers (9a, 9b and 10a, 10b and 11a, 11b respectively) in each case by means of a resilient staying action of the commutating plate.
  2. Switchgear according to claim 1, characterised in that the upper housing portion (3) is subdivided, by means of parallel partition walls (36, 37), into extinction chamber areas associated with a respective contact bridge (24) and each extinction chamber area is bridged centrally by a bridge (301, 302, 303) and is subdivided into two chambers (9a,b; 10a,b; 11a,b), with, viewed from above, one commutating plate (7) resting on each bridge.
  3. Switchgear according to claim 1 or 2, characterised in that the cover (4), which covers the upper housing portion (3), has resilient stop tongues (43, 44) which protrude on the lower side and can be engaged into recesses of the upper housing portion (3).
  4. Switchgear according to one of the claims 2 and 3, characterised in that the outer bridges (301, 303) of the upper housing portion and the commutating plates (7) have, in the centre, a through-hole for the stop tongues (43, 44) of the cover (4).
  5. Switchgear according to one of the claims 2 to 4, characterised in that the central bridge (302) has a through-hole (305) for a switch-position indicator (17) and the switch-position indicator (17) is suspended therein via the commutating plate (7).
  6. Switchgear according to one of the claims 1 to 5, characterised in that the commutating plate (7) has cams (74, 75) which protrude outwards from the outer end limbs (72) to butt against the insulating plates (52).
  7. Switchgear according to one of the claims 2 to 6, characterised in that the partition walls (36, 37) of the upper housing portion (3) have insert slots (38, 39) for protruding wall webs (45, 46) which are formed on the underside of the cover (4).
  8. Switchgear according to one of the claims 1 to 7, characterised in that the upper housing portion (3), viewed in cross section, parallel to the contact bridges (24) is formed in the shape of a T with two laterally projecting flanges (31, 30) as a means of support on the lower housing portion (2) and so as to cover the connecting contacts in the lower housing portion.
  9. Switchgear according to one of the claims 1 to 8, characterised in that the upper housing portion (3) can be inserted from above into a U-shaped recess (20) of the lower housing portion (2) and is provided with guide ribs (32a,b) underneath the flanges (31, 30) on the two sides which lie opposite each other and are guided in the lower housing portion.
  10. Switchgear according to one of the claims 1 to 9, characterised in that the upper housing portion (3) has recesses (34) which reach as far as underneath the cover (4) and into the region of the extinction chambers (9, 10, 11a,b) and are used as arc blow-out openings.
EP92103912A 1991-03-25 1992-03-07 Electromagnetic switchgear with deionisation devices Expired - Lifetime EP0505794B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4109717 1991-03-25
DE4109717A DE4109717C1 (en) 1991-03-25 1991-03-25

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EP0505794A1 EP0505794A1 (en) 1992-09-30
EP0505794B1 true EP0505794B1 (en) 1995-11-15

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EP92103912A Expired - Lifetime EP0505794B1 (en) 1991-03-25 1992-03-07 Electromagnetic switchgear with deionisation devices

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EP (1) EP0505794B1 (en)
AT (1) ATE130461T1 (en)
DE (2) DE4109717C1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19814411C1 (en) * 1998-03-31 1999-07-15 Moeller Gmbh Electromagnetic switching device with quenching chamber, esp. a high power breaker

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19709843A1 (en) * 1997-02-28 1998-09-03 Siemens Ag Chamber cover attachment for arc quenching chambers for low-voltage circuit breakers
DE20316027U1 (en) 2003-10-18 2004-01-15 Moeller Gmbh Electrical switching device with device for arc extinguishing
DE102012112779A1 (en) 2012-12-20 2014-06-26 Eaton Electrical Ip Gmbh & Co. Kg Electrical switching device

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DE1196750B (en) * 1962-05-21 1965-07-15 Licentia Gmbh Electrical switchgear
DE7327820U (en) * 1973-07-30 1973-11-08 Bbc Ag Electrical switchgear, msbe special protection
DE2608950A1 (en) * 1976-03-04 1977-09-08 Bbc Brown Boveri & Cie Electromagnetic contactor with enclosed contact breakers - has two groups of arc quenching sheets associated with each stationary contact pair
KR860002080B1 (en) * 1982-01-28 1986-11-24 카다야마히도 하지로 Power switching device
JPS60117546U (en) * 1984-01-17 1985-08-08 三菱電機株式会社 electromagnetic contactor
US4684772A (en) * 1985-04-09 1987-08-04 Square D Company Mounting apparatus for arc quenching plates for electric contacts
DE8531352U1 (en) * 1985-11-06 1986-01-02 Siemens AG, 1000 Berlin und 8000 München Arc chamber
DE8531354U1 (en) * 1985-11-06 1986-01-02 Siemens AG, 1000 Berlin und 8000 München Arc chamber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19814411C1 (en) * 1998-03-31 1999-07-15 Moeller Gmbh Electromagnetic switching device with quenching chamber, esp. a high power breaker

Also Published As

Publication number Publication date
EP0505794A1 (en) 1992-09-30
ATE130461T1 (en) 1995-12-15
DE59204295D1 (en) 1995-12-21
DE4109717C1 (en) 1992-09-03

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