EP0565009A1 - Installation apparatus - Google Patents

Installation apparatus Download PDF

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Publication number
EP0565009A1
EP0565009A1 EP93105553A EP93105553A EP0565009A1 EP 0565009 A1 EP0565009 A1 EP 0565009A1 EP 93105553 A EP93105553 A EP 93105553A EP 93105553 A EP93105553 A EP 93105553A EP 0565009 A1 EP0565009 A1 EP 0565009A1
Authority
EP
European Patent Office
Prior art keywords
contact
lever
holder
shaft
contact lever
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP93105553A
Other languages
German (de)
French (fr)
Inventor
Volker Schmitt
Rolf Goehle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Patent GmbH
Original Assignee
ABB Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ABB Patent GmbH filed Critical ABB Patent GmbH
Publication of EP0565009A1 publication Critical patent/EP0565009A1/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
    • H01H1/225—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member the supporting member being pivotable

Definitions

  • the invention relates to a contact arrangement for an installation switch, preferably for a residual current or residual current circuit breaker, according to the preamble of claim 1.
  • the movable contact pieces are attached to contact levers which are themselves rotatably mounted in a control shaft.
  • the selector shaft has openings corresponding to the number of contact levers, transverse to the central axis of the selector shaft, and each contact lever has pins on both sides, which are inserted into recesses in the openings.
  • each contact lever is provided with an L-shaped fold at its end opposite the contact piece, which engages behind a web bridging the associated opening parallel to the axis of rotation of the selector shaft.
  • a tension spring is used as the contact pressure and return spring provided, one end of which is hooked onto the contact lever and the other end of which is attached to the housing of the installation device, the point of application of the tension spring on the contact lever being between the central axis of the control shaft or the bevel and the axis of rotation of the contact lever in the control shaft. Since the spring must reach through the selector shaft, the selector shaft has one passage each, which - depending on the position of the spring in the selector shaft - runs transversely to the axis of rotation of the selector shaft and at a distance from it.
  • the control shaft is mounted in the housing of the installation switch itself.
  • the tension spring is difficult to assemble and the position of the spring in the housing is unsafe when actuated.
  • special wall parts must be provided for the purpose of fastening or hanging the tension spring. Since the housing and the selector shaft are made of thermoset plastic, the friction between the selector shaft and the housing is high, which means that lubrication is required.
  • the object of the invention is to provide a contact arrangement of the type mentioned, in which the assembly is simplified and lubrication is no longer required.
  • the contact lever is accommodated in a control shaft, which in turn is guided in a holder that can be fixed in the housing of the installation switch.
  • the compression spring which is required to generate the contact pressure or a reset process, is fixed between the contact lever and the holder, whereby all three components are one Form a unit that can be preassembled and used as a unit in an electrical installation device.
  • the holder preferably has a plate-shaped base, on each of which a mouth-forming projections are provided, each of which partially delimit a circular space.
  • the jaw opening is smaller than the diameter of the roller part of the selector shaft, the roller part provided on the selector shaft can be snapped, so that the holder forms a unit with the selector shaft.
  • a limiting groove or a limiting lug or limiting tooth are provided in accordance with the characterizing features of claim 4.
  • each opening of the control shaft for the movable contact lever is provided with a stop which is diametrically related to the central axis of rotation of the control shaft to the axis of rotation of the contact lever according to the characterizing features of claim 5 is arranged opposite, such that after opening the contact points, the springs press the associated contact lever against the stop and thus firmly couple the contact lever with the control shaft.
  • a nub for each spring is preferably arranged according to claim 6 on the plate-shaped base of the holder, over which the spring is inserted and on which the spring can be fixed by friction.
  • the holder for the selector shaft is an independent part and can be easily inserted into the housing of the installation switch, the holder and the selector shaft can each be made of a thermoplastic, so that the friction between the two is kept low and the rotary movement against one another is free of wear can be done.
  • FIG. 1 shows the lower part 10 of a housing of a residual current circuit breaker, which is cup-shaped and has a receiving space 11 in the center, for example for the converter of the residual current circuit breaker.
  • the receiving space 11 is closed to the narrow sides 12 and 13 by means of partitions 14 and 15 from a terminal space and a contact point receiving space 17.
  • a hat carrier-like contact carrier rail 18 which is aligned perpendicular to the bottom wall 19 of the lower part and is inserted with a leg end 20 into a pocket 21 for holding.
  • the other leg end 22 is connected to a terminal 23 in a terminal space 24.
  • the contact carrier rail 18 has a fixed contact piece 25 in the center, which cooperates with a movable contact piece 27 fastened to a contact lever 26.
  • the contact lever 26 is received in a contact carrier 28 designed as a switching shaft, which is rotatably mounted in a holder 29, as will be shown in more detail below.
  • Figure 1 shows the switching device in the on position.
  • FIGS. 5 to 7. show the holder 29 in three views.
  • the holder 29 has a base plate 30 which has on its one side surface approximately in the middle two arms 32 and 33 which delimit a mouth opening 31 and which delimit a partial arc, the mouth opening 31 which the two arms 32 and 33 take between them being smaller than the diameter R of the mouth opening 31.
  • a nose 34 is formed which projects into the mouth opening 31.
  • two projections 35 and 36 are formed on both sides of the arm 32 and at a distance therefrom perpendicular to the base plate 30, which extend approximately to the center of the distance from the center of the mouth opening 31 from the base plate project.
  • the base plate 30 Approximately in the area of the arm 33, the base plate 30 has two pins 37 and 38 on both sides of the arm 33, which are located exactly below the extensions 35 and 36, respectively.
  • the diameter of the pin 37 and 38 is dimensioned such that a helical compression spring 39 and 40 can be placed over the pin 37 or 38 and is held on the pin 37 and 38 by friction.
  • the holder 29 with the pin 37 and the helical compression spring 39 can be seen in particular in FIG. 4.
  • the arm 32 can be seen in part.
  • the switching shaft 28 serving as a contact lever carrier is connected to the holder 29.
  • the switching shaft 28 has spaces 41 corresponding to the number of contact pieces (FIG. 8 only shows one space), which are bridged by means of webs 42 and 43.
  • the spaces 41 are delimited on both sides by means of plate elements 44 and 45, further spaces 46 and 47 being provided between the plate parts 45 and 44 outside the plate parts 44 and 45, which spaces are bridged by means of a shift drum section 48 and 49, the center lines SM of which are perpendicular to the alignment of the plate parts 44 and 45 and run parallel to the webs 42 and 43.
  • the webs 42 and 43 are of course connected to the side surfaces of the spaces 41.
  • the diameter of the shift drum sections 48 and 49 corresponds to the diameter of the jaw opening 31, so that the arms 32 and 33 can be pushed over the shift drum sections 48 and 49, so that the shift shaft 28 is locked with the holder 29.
  • the holder according to Figures 5 to 7 is a holder for a two-pole version of a residual current circuit breaker; the associated switching shaft 28 has two interstices 41 and only one switching drum section 48. If a multipole version of a residual current circuit breaker is to be fitted, then a number of interstices corresponding to the number of contact points is provided; this also results in a corresponding number of arms 32/33.
  • each space has two sections 41a and 41b; the space 41a has a larger width than the space 41b, which is due to the design of the contact lever 26.
  • the contact lever 26 also has sections of different widths, namely a section 26a with a larger width and a section 26b with a smaller width.
  • the lugs 26c are located at a short distance from the contact-side end of the contact lever 26 and the opposite end has a nose or L-shaped bend 53 which protrudes from the switching shaft as well as the contact-side end of the contact lever.
  • the contact lever On the side of the contact lever on which the movable contact piece 27 is fastened, the contact lever also has a nose 54, the diameter of which corresponds to the inside diameter of the helical compression spring 39, so that the nose 54 can reach into the interior of the helical compression spring 39.
  • the helical compression spring 39 presses the contact lever into the open position, i.e. away from the base plate 30, so that the contact lever 26 comes to rest against the web 55, as a result of which a rigid between the control shaft 28 and the contact lever 26 Connection is achieved.
  • the webs 43, 42 and 55 are arranged virtually at the corners of a triangle, the webs 43 and 42 bridging the gap 41 on the side of the contact lever 26 facing the movable contact piece 27, whereas the web 55 is arranged on the opposite side of the contact lever .
  • the web 55 has on its surface facing the contact lever a guide tip 56 which engages in a concave recess 57 on the contact lever when the contact lever is in the switch-off position shown in FIG. 4; the tip 56 together with the recess 57 serves as a defined support cutting edge for the contact lever.
  • the shift drum sections 48, 49 have a groove 58 covering a partial section of the circumference, into which the nose 34 engages in the assembled state and thus limits the rotational movement of the shift shaft 28 in the holder 30.
  • the springs 39, 40 are placed on their associated pins 37 and 38 on the base plate 30 of the holder; so then the contact lever 26 are inserted into the spaces 41 such that the contact levers are between the webs 43 and 42 and 55, then the control shaft 28 is connected to the holder together with the contact carriers therein such that the arms 32 and 33 snap over the shift drum sections 48 and 49 and grip the other, previously free end of the helical compression springs 39 and 40 via the corresponding pins 54 on the contact levers 26. It must still be added that the two lugs 26c are inserted into the recesses 50 and 51.
  • the holder 30 and the control shaft 28 are made of thermoplastic, so that an optimal friction is generated between the two.

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Breakers (AREA)

Abstract

A contact arrangement in an installation switch, especially a residual current device or differential-current protection circuit breaker, having at least one moving contact element and in each case one stationery contact element which is allocated to each moving contact element, the moving contact element being attached to a contact lever, having a contact support for holding and guiding the contact lever such that it can move in rotation, having a spring arrangement which produces a contact pressure between the stationary contact element and the moving contact element, and a pivoting shaft being provided having a number of perforations which run transversely with respect to the centre axis of the contact support and whose number corresponds to the number of contact elements, into which pivoting shaft the contact levers are inserted, the contact levers themselves in turn being supported such that they rotate about a rotation axis in the perforations, the switching shaft being supported such that it can rotate in a holder which is fixed in the housing of the installation circuit breaker, and in each case one compression spring being arranged between each contact lever and the holder on the side opposite the moving contact element, such that said compression spring acts on the contact lever to move it about its rotation axis in the switching shaft into the closed position. <IMAGE>

Description

Die Erfindung betrifft eine Kontaktanordnung für einen Installationsschalter, vorzugsweise für einen Fehlerstrom- oder Differenzstromschutzschalter, nach dem Oberbegriff des Anspruches 1.The invention relates to a contact arrangement for an installation switch, preferably for a residual current or residual current circuit breaker, according to the preamble of claim 1.

In manchen Installationsgeräten, insbesondere in Fehlerstromschutzschaltern, sind die beweglichen Kontaktstücke an Kontakthebeln angebracht, die in einer Schaltwelle selbst drehbar gelagert sind. Zu diesem Zweck besitzt die Schaltwelle der Anzahl der Kontakthebel entsprechend quer zur Mittelachse der Schaltwelle verlaufende Durchbrüche und jeder Kontakthebel beidseitig Zapfen, die in Ausnehmungen an den Durchbrüchen eingesetzt sind. Zur Halterung der Kontakthebel in den Durchbrüchen ist jeder Kontakthebel mit einer ein L bildenden Abkantung an seinem dem Kontaktstück entgegengesetzt liegenden Ende versehen, die hinter einen den zugehörigen Durchbruch parallel zur Drehachse der Schaltwelle überbrückenden Steg greift. Als Kontaktdruck- und Rückstellfeder ist je eine Zugfeder vorgesehen, deren eines Ende am Kontakthebel und deren anderes Ende am Gehäuse des Installationsgerätes eingehängt ist, wobei der Angriffspunkt der Zugfeder am Kontakthebel zwischen der Mittelachse der Schaltwelle bzw. der Abkantung und der Drehachse des Kontakthebels in der Schaltwelle liegt. Da die Feder die Schaltwelle durchgreifen muß, besitzt die Schaltwelle je einen Durchgang, der - entsprechend der Lage der Feder in der Schaltwelle - quer zur Drehachse der Schaltwelle und in Abstand zu ihr verläuft. Die Schaltwelle ist im Gehäuse des Installationsschalters selbst gelagert.In some installation devices, in particular in residual current circuit breakers, the movable contact pieces are attached to contact levers which are themselves rotatably mounted in a control shaft. For this purpose, the selector shaft has openings corresponding to the number of contact levers, transverse to the central axis of the selector shaft, and each contact lever has pins on both sides, which are inserted into recesses in the openings. To hold the contact lever in the openings, each contact lever is provided with an L-shaped fold at its end opposite the contact piece, which engages behind a web bridging the associated opening parallel to the axis of rotation of the selector shaft. A tension spring is used as the contact pressure and return spring provided, one end of which is hooked onto the contact lever and the other end of which is attached to the housing of the installation device, the point of application of the tension spring on the contact lever being between the central axis of the control shaft or the bevel and the axis of rotation of the contact lever in the control shaft. Since the spring must reach through the selector shaft, the selector shaft has one passage each, which - depending on the position of the spring in the selector shaft - runs transversely to the axis of rotation of the selector shaft and at a distance from it. The control shaft is mounted in the housing of the installation switch itself.

Die Montage der Zugfeder ist schwierig und die Lage der Feder im Gehäuse bei Betätigung unsicher. Außerdem müssen besondere Wandteile zwecks Befestigung bzw. Einhängung der Zugfeder vorgesehen werden. Da das Gehäuse und die Schaltwelle aus Duroplast bestehen, ist die Reibung zwischen Schaltwelle und Gehäuse hoch, wodurch eine Schmierung erforderlich wird.The tension spring is difficult to assemble and the position of the spring in the housing is unsafe when actuated. In addition, special wall parts must be provided for the purpose of fastening or hanging the tension spring. Since the housing and the selector shaft are made of thermoset plastic, the friction between the selector shaft and the housing is high, which means that lubrication is required.

Aufgabe der Erfindung ist es, eine Kontaktanordnung der eingangs genannten Art zu schaffen, bei der die Montage vereinfacht und eine Schmierung nicht mehr erforderlich ist.The object of the invention is to provide a contact arrangement of the type mentioned, in which the assembly is simplified and lubrication is no longer required.

Diese Aufgabe wird erfindungsgemäß gelöst, durch die kennzeichnenden Merkmale des Anspruches 1.This object is achieved according to the invention by the characterizing features of claim 1.

Erfindungsgemäß also wird der Kontakthebel in einer Schaltwelle untergebracht, die selbst wiederum in einem Halter geführt ist, der im Gehäuse des Installationsschalters festgelegt werden kann. Die Druckfeder, die zur Erzeugung des Kontaktdruckes bzw. eines Rückstellvorganges erforderlich ist, wird zwischen dem Kontakthebel und dem Halter festgelegt, wodurch alle drei Komponenten eine Einheit bilden, die vormontiert und als Einheit in ein elektrisches Installationsgerät eingesetzt werden kann.According to the invention, the contact lever is accommodated in a control shaft, which in turn is guided in a holder that can be fixed in the housing of the installation switch. The compression spring, which is required to generate the contact pressure or a reset process, is fixed between the contact lever and the holder, whereby all three components are one Form a unit that can be preassembled and used as a unit in an electrical installation device.

Damit die Schaltwelle an dem Halter verrastet werden kann, besitzt in bevorzugter Weise der Halter eine plattenförmige Basis, an der je ein Maul bildende Vorsprünge vorgesehen sind, die je einen kreisförmigen Raum teilweise umgrenzen. In diesen Raum, dessen Maulöffnung kleiner ist als der Durchmesser des Walzenteils der Schaltwelle, kann das an der Schaltwelle vorgesehene Walzenteil eingeschnappt werden, so daß hierdurch der Halter zusammen mit der Schaltwelle eine Einheit bildet.So that the control shaft can be locked on the holder, the holder preferably has a plate-shaped base, on each of which a mouth-forming projections are provided, each of which partially delimit a circular space. In this space, the jaw opening is smaller than the diameter of the roller part of the selector shaft, the roller part provided on the selector shaft can be snapped, so that the holder forms a unit with the selector shaft.

Damit die Walze nicht unbegrenzt gegenüber dem Halter verdreht werden kann, sind gemäß kennzeichnenden Merkmalen des Anspruches 4 je eine Begrenzungsnut bzw. eine Begrenzungsnase oder Begrenzungszahn vorgesehen.So that the roller cannot be rotated with respect to the holder without limitation, a limiting groove or a limiting lug or limiting tooth are provided in accordance with the characterizing features of claim 4.

Zur Bildung der vormontierbaren Einheit und natürlich auch zur Erzielung einer ausreichenden Drehbeweglichkeit des Kontakthebels innerhalb der Schaltwelle ist gemäß kennzeichnenden Merkmalen des Anspruches 5 jede Durchbrechung der Schaltwelle für den beweglichen Kontakthebel mit einem Anschlag versehen, der bezogen auf die Mitteldrehachse der Schaltwelle diametral zur Drehachse des Kontakthebels gegenüber angeordnet ist, dergestalt, daß nach Öffnung der Kontaktstellen die Federn den zugehörigen Kontakthebel gegen den Anschlag drücken und so die Kontakthebel mit der Schaltwelle fest verkoppeln.To form the preassembled unit and, of course, to achieve sufficient rotational mobility of the contact lever within the control shaft, each opening of the control shaft for the movable contact lever is provided with a stop which is diametrically related to the central axis of rotation of the control shaft to the axis of rotation of the contact lever according to the characterizing features of claim 5 is arranged opposite, such that after opening the contact points, the springs press the associated contact lever against the stop and thus firmly couple the contact lever with the control shaft.

Damit darüberhinaus auch die Feder vor endgültigem Zusammenbau fixiert ist, ist in bevorzugter Weise nach Anspruch 6 an der plattenförmigen Basis des Halters je ein Noppen für jede Feder angeordnet, über den die Feder gesteckt und auf dem die Feder durch Reibung fixiert werden kann.So that the spring is also fixed before final assembly, a nub for each spring is preferably arranged according to claim 6 on the plate-shaped base of the holder, over which the spring is inserted and on which the spring can be fixed by friction.

Dadurch, daß der Halter für die Schaltwelle ein eigenständiges Teil darstellt und in das Gehäuse des Installationsschalters einfach eingesetzt werden kann, können der Halter und die Schaltwelle je aus einem Thermoplast hergestellt werden, so daß die Reibung zwischen beiden gering gehalten werden und die Drehbewegung gegeneinander verschleißfrei erfolgen kann.Characterized in that the holder for the selector shaft is an independent part and can be easily inserted into the housing of the installation switch, the holder and the selector shaft can each be made of a thermoplastic, so that the friction between the two is kept low and the rotary movement against one another is free of wear can be done.

Weitere vorteilhafte Ausgestaltungen und Verbesserungen der Erfindung sind den weiteren Unteransprüchen zu entnehmen.Further advantageous refinements and improvements of the invention can be found in the further subclaims.

Anhand der Zeichnung, in der ein Ausführungsbeispiel der Erfindung dargestellt ist, sollen die Erfindung sowie weitere vorteilhafte Ausgestaltungen und Verbesserungen der Erfindung näher erläutert und beschrieben werden.Based on the drawing, in which an embodiment of the invention is shown, the invention and further advantageous refinements and improvements of the invention are to be explained and described in more detail.

Es zeigen:

Figur 1
eine Schnittansicht durch ein Unterteil eines Fehlerstromschutzschalters, in Einschaltzustand,
Figur 2
den Fehlerstromschutzschalter teilweise geschnitten, gemäß Figur 1 in Ausschaltstellung,
Figur 3
eine Ansicht auf eine Einheit aus Schaltwelle, Halter und Kontaktstücken,
Figur 4
eine Schnittansicht gemäß Schnittlinie IV-IV der Figur 3, in gegenüber der Anordnung nach Figur 1 spiegelbildlicher Darstellung,
Figuren 5 bis 7
drei Seitenansichten eines Halters mit eingesetzter Feder und
Figur 8
eine Schnittansicht durch die Schaltwalze gemäß Schnittlinie VIII-VIII der Figur 1.
Show it:
Figure 1
2 shows a sectional view through a lower part of a residual current circuit breaker, in the switched-on state,
Figure 2
partially cut the residual current circuit breaker, according to FIG. 1 in the off position,
Figure 3
2 shows a view of a unit consisting of the selector shaft, holder and contact pieces,
Figure 4
3 shows a sectional view according to section line IV-IV of FIG. 3, in a mirror image of the arrangement according to FIG.
Figures 5 to 7
three side views of a holder with inserted spring and
Figure 8
2 shows a sectional view through the shift drum according to section line VIII-VIII of FIG. 1.

Die Figur 1 zeigt das Unterteil 10 eines Gehäuses eines Fehlerstromschutzschalters, welches napfartig ausgebildet ist und mittig einen Aufnahmeraum 11 beispielsweise für den Wandler des Fehlerstromschutzschalters aufweist. Der Aufnahmeraum 11 ist zu den Schmalseiten 12 und 13 mittels Zwischenwänden 14 und 15 von einem Anschlußklemmenraum und einem Kontaktstellenaufnahmeraum 17 abgeschlossen. In dem Kontaktstellenaufnahmeraum 17 befindet sich eine hutprofilartig ausgebildete Kontaktträgerschiene 18, die senkrecht zur Bodenwand 19 des Unterteils ausgerichtet ist und mit einem Schenkelende 20 in eine Tasche 21 zur Halterung eingesteckt ist. Das andere Schenkelende 22 ist mit einer Anschlußklemme 23 in einem Anschlußklemmenraum 24 verbunden.1 shows the lower part 10 of a housing of a residual current circuit breaker, which is cup-shaped and has a receiving space 11 in the center, for example for the converter of the residual current circuit breaker. The receiving space 11 is closed to the narrow sides 12 and 13 by means of partitions 14 and 15 from a terminal space and a contact point receiving space 17. In the contact point receiving space 17 there is a hat carrier-like contact carrier rail 18 which is aligned perpendicular to the bottom wall 19 of the lower part and is inserted with a leg end 20 into a pocket 21 for holding. The other leg end 22 is connected to a terminal 23 in a terminal space 24.

Die Kontaktträgerschiene 18 besitzt mittig ein festes Kontaktstück 25, das mit einem an einem Kontakthebel 26 befestigten beweglichen Kontaktstück 27 zusammenwirkt.The contact carrier rail 18 has a fixed contact piece 25 in the center, which cooperates with a movable contact piece 27 fastened to a contact lever 26.

Der Kontakthebel 26 ist in einem als Schaltwelle ausgebildeten Kontaktträger 28 aufgenommen, der in einem Halter 29 drehbar gelagert ist, wie weiter unten näher dargestellt werden soll.The contact lever 26 is received in a contact carrier 28 designed as a switching shaft, which is rotatably mounted in a holder 29, as will be shown in more detail below.

Die Figur 1 zeigt das Schaltgerät in Einschaltstellung.Figure 1 shows the switching device in the on position.

Es sei nun Bezug genommen auf die Figuren 5 bis 7. Diese zeigen den Halter 29 in drei Ansichten.Reference is now made to FIGS. 5 to 7. These show the holder 29 in three views.

Der Halter 29 besitzt eine Basisplatte 30, die auf ihrer einen Seitenfläche etwa mittig zwei eine Maulöffnung 31 umgrenzende Arme 32 und 33 aufweist, die einen Teilkreisbogen begrenzen, wobei die Maulöffnung 31, die die beiden Arme 32 und 33 zwischen sich nehmen, kleiner ist als der Durchmesser R der Maulöffnung 31. Im Bereich der Mittellinie M der Maulöffnung 31, die senkrecht zur Basisplatte verläuft, ist eine Nase 34 angeformt, die in die Maulöffnung 31 hineinragt. An dem Ende der Basisplatte 30, an dem der Arm 32 anschließt, sind beidseitig zu dem Arm 32 und in Abstand dazu senkrecht zur Basisplatte 30 zwei Vorsprünge 35 und 36 angeformt, die etwa bis zur Mitte des Abstandes des Mittelpunktes der Maulöffnung 31 von der Basisplatte vorspringen.The holder 29 has a base plate 30 which has on its one side surface approximately in the middle two arms 32 and 33 which delimit a mouth opening 31 and which delimit a partial arc, the mouth opening 31 which the two arms 32 and 33 take between them being smaller than the diameter R of the mouth opening 31. In the area of the center line M of the mouth opening 31, which extends perpendicular to the base plate, a nose 34 is formed which projects into the mouth opening 31. At the end of the base plate 30, to which the arm 32 connects, two projections 35 and 36 are formed on both sides of the arm 32 and at a distance therefrom perpendicular to the base plate 30, which extend approximately to the center of the distance from the center of the mouth opening 31 from the base plate project.

Etwa im Bereich des Armes 33 besitzt die Basisplatte 30 beidseitig zu dem Arm 33 zwei Zapfen 37 und 38, die genau unterhalb der Fortsätze 35 bzw. 36 liegen. Der Durchmesser der Zapfen 37 und 38 ist so bemessen, daß je eine Schraubendruckfeder 39 und 40 über die Zapfen 37 bzw. 38 gesteckt werden kann und auf den Zapfen 37 und 38 durch Reibung festgehalten ist.Approximately in the area of the arm 33, the base plate 30 has two pins 37 and 38 on both sides of the arm 33, which are located exactly below the extensions 35 and 36, respectively. The diameter of the pin 37 and 38 is dimensioned such that a helical compression spring 39 and 40 can be placed over the pin 37 or 38 and is held on the pin 37 and 38 by friction.

Es sei nun Bezug genommen auf die Figuren 3 und 4.Reference is now made to FIGS. 3 and 4.

Man erkennt insbesondere in der Figur 4 den Halter 29 mit dem Zapfen 37 sowie der Schraubendruckfeder 39. Der Arm 32 ist teilweise zu sehen.The holder 29 with the pin 37 and the helical compression spring 39 can be seen in particular in FIG. 4. The arm 32 can be seen in part.

Mit dem Halter 29 ist die als Kontakthebelträger dienende Schaltwelle 28 verbunden.The switching shaft 28 serving as a contact lever carrier is connected to the holder 29.

Wie aus der Figur 8 hervorgeht, besitzt die Schaltwelle 28 der Anzahl der Kontaktstücke entsprechende Zwischenräume 41 (die Figur 8 zeigt lediglich einen Zwischenraum), die mittels Stegen 42 und 43 überbrückt sind. Die Zwischenräume 41 sind mittels Plattenelementen 44 und 45 beidseitig begrenzt, wobei zwischen den Plattenteilen 45 und 44 außerhalb der Plattenteile 44 und 45 weitere Zwischenräume 46 und 47 vorgesehen sind, die mittels eines Schaltwalzenabschnittes 48 bzw. 49 überbrückt sind, deren Mittellinien SM senkrecht zur Ausrichtung der Plattenteile 44 und 45 und parallel zu den Stegen 42 und 43 verlaufen. Die Stege 42 und 43 sind natürlich an den Seitenflächen der Zwischenräume 41 angeschlossen.As can be seen from FIG. 8, the switching shaft 28 has spaces 41 corresponding to the number of contact pieces (FIG. 8 only shows one space), which are bridged by means of webs 42 and 43. The spaces 41 are delimited on both sides by means of plate elements 44 and 45, further spaces 46 and 47 being provided between the plate parts 45 and 44 outside the plate parts 44 and 45, which spaces are bridged by means of a shift drum section 48 and 49, the center lines SM of which are perpendicular to the alignment of the plate parts 44 and 45 and run parallel to the webs 42 and 43. The webs 42 and 43 are of course connected to the side surfaces of the spaces 41.

Der Durchmesser der Schaltwalzenabschnitte 48 und 49 entspricht dem Durchmesser der Maulöffnung 31, so daß die Arme 32 und 33 über die Schaltwalzenabschnitte 48 bzw. 49 gesteckt werden können, so daß die Schaltwelle 28 mit dem Halter 29 verrastet ist.The diameter of the shift drum sections 48 and 49 corresponds to the diameter of the jaw opening 31, so that the arms 32 and 33 can be pushed over the shift drum sections 48 and 49, so that the shift shaft 28 is locked with the holder 29.

Der Halter nach den Figuren 5 bis 7 ist ein Halter für eine zweipolige Ausführung eines Fehlerstromschutzschalters; die zugehörige Schaltwelle 28 besitzt zwei Zwischenräume 41 und nur einen Schaltwalzenabschnitt 48. Wenn eine mehrpolige Ausführung eines Fehlerstromschutzschalters bestückt werden soll, dann ist eine der Anzahl der Kontaktstellen entsprechende Anzahl von Zwischenräumen vorgesehen; hieraus ergibt sich auch eine entsprechende Anzahl von Armen 32/33.The holder according to Figures 5 to 7 is a holder for a two-pole version of a residual current circuit breaker; the associated switching shaft 28 has two interstices 41 and only one switching drum section 48. If a multipole version of a residual current circuit breaker is to be fitted, then a number of interstices corresponding to the number of contact points is provided; this also results in a corresponding number of arms 32/33.

Wie aus Figur 8 ersichtlich, besitzt jeder Zwischenraum zwei Abschnitte 41a und 41b; der Zwischenraum 41a besitzt eine größere Weite als der Zwischenraum 41b, was auf die Ausgestaltung des Kontakthebels 26 zurückzuführen ist. Der Kontakthebel 26 besitzt ebenfalls Abschnitte unterschiedlicher Breite, nämlich einen Abschnitt 26a mit größerer Breite sowie einen Abschnitt 26b mit geringerer Breite.As can be seen from Figure 8, each space has two sections 41a and 41b; the space 41a has a larger width than the space 41b, which is due to the design of the contact lever 26. The contact lever 26 also has sections of different widths, namely a section 26a with a larger width and a section 26b with a smaller width.

Aus Figur 3 ist ersichtlich, daß beidseitig an den Längskanten des Kontakthebels 26 Nasen 26c angeformt sind, die in maulförmige Ausnehmungen 50 und 51 einrasten; der Grund 53 bildet dann die Drehachse des Kontakthebels innerhalb der Schaltwelle 28.From Figure 3 it can be seen that 26a lugs 26c are formed on both sides of the longitudinal edges of the contact lever, which snap into mouth-shaped recesses 50 and 51; the base 53 then forms the axis of rotation of the contact lever within the control shaft 28.

Die Nasen 26c befinden sich in geringem Abstand zu dem kontaktstückseitigen Ende des Kontakthebels 26 und das entgegengesetzt liegende Ende besitzt eine nasen- oder L-förmige Abkantung 53, die aus der Schaltwelle ebenso wie das kontaktstückseitige Ende des Kontakthebels herausragt.The lugs 26c are located at a short distance from the contact-side end of the contact lever 26 and the opposite end has a nose or L-shaped bend 53 which protrudes from the switching shaft as well as the contact-side end of the contact lever.

Auf der Seite des Kontakthebels, auf der das bewegliche Kontaktstück 27 befestigt ist, besitzt auch der Kontakthebel eine Nase 54, deren Durchmesser dem Innendurchmesser der Schraubendruckfeder 39 entspricht, so daß die Nase 54 ins Innere der Schraubendruckfeder 39 hineingreifen kann.On the side of the contact lever on which the movable contact piece 27 is fastened, the contact lever also has a nose 54, the diameter of which corresponds to the inside diameter of the helical compression spring 39, so that the nose 54 can reach into the interior of the helical compression spring 39.

Man erkennt in der Figur 1, daß im Einschaltzustand die Schraubendruckfeder 39 zusammengedrückt ist, wobei die Kraft der Schraubendruckfeder 39 den Kontakthebel um die durch die Vorsprünge 26c und den Grund 52 gebildete Drehachse des Kontakthebels 26 zu drehen sucht, so daß der Kontaktdruck zwischen dem beweglichen und dem festen Kontaktstück 27/25 hergestellt ist.It can be seen in FIG. 1 that the helical compression spring 39 is compressed in the switched-on state, the force of the helical compression spring 39 trying to rotate the contact lever about the axis of rotation of the contact lever 26 formed by the projections 26c and the base 52, so that the contact pressure between the movable and the fixed contact piece 27/25 is made.

Wenn der Schalter in Öffnungsstellung verbracht wird, dann drückt die Schraubendruckfeder 39 den Kontakthebel in die Öffnungsstellung, also von der Basisplatte 30 weg, so daß der Kontakthebel 26 gegen den Steg 55 zum Anliegen kommt, wodurch zwischen der Schaltwelle 28 und dem Kontakthebel 26 eine starre Verbindung erzielt wird.When the switch is moved to the open position, the helical compression spring 39 presses the contact lever into the open position, i.e. away from the base plate 30, so that the contact lever 26 comes to rest against the web 55, as a result of which a rigid between the control shaft 28 and the contact lever 26 Connection is achieved.

Die Stege 43, 42 und 55 sind quasi an den Ecken eines Dreiecks angeordnet, wobei die Stege 43 und 42 auf der dem beweglichen Kontaktstück 27 zugewandten Seite des Kontakthebels 26 den Zwischenraum 41 überbrücken, wogegen der Steg 55 auf der entgegengesetzten Seite des Kontakthebels angeordnet ist. Der Steg 55 besitzt an seiner dem Kontakthebel zugewandten Fläche eine Führungsspitze 56, die in eine konkave Ausnehmung 57 am Kontakthebel eingreift, wenn sich der Kontakthebel in der in Figur 4 gezeigten Ausschaltstellung befindet; die Spitze 56 dient zusammen mit der Ausnehmung 57 als eine definierte Auflagerschneide für den Kontakthebel.The webs 43, 42 and 55 are arranged virtually at the corners of a triangle, the webs 43 and 42 bridging the gap 41 on the side of the contact lever 26 facing the movable contact piece 27, whereas the web 55 is arranged on the opposite side of the contact lever . The web 55 has on its surface facing the contact lever a guide tip 56 which engages in a concave recess 57 on the contact lever when the contact lever is in the switch-off position shown in FIG. 4; the tip 56 together with the recess 57 serves as a defined support cutting edge for the contact lever.

Aus Figur 2 ist ersichtlich, daß die Schaltwalzenabschnitte 48, 49 eine einen Teilabschnitt des Umfangs überdeckende Rille 58 aufweisen, in die im montierten Zustand die Nase 34 eingreift und so die Drehbewegung der Schaltwelle 28 im Halter 30 begrenzt.It can be seen from FIG. 2 that the shift drum sections 48, 49 have a groove 58 covering a partial section of the circumference, into which the nose 34 engages in the assembled state and thus limits the rotational movement of the shift shaft 28 in the holder 30.

Zur Montage werden die Federn 39, 40 auf ihre zugehörigen Zapfen 37 und 38 an der Basisplatte 30 des Halters gesteckt; so dann werden die Kontakthebel 26 in die Zwischenräume 41 derart eingefügt, daß sich die Kontakthebel zwischen den Stegen 43 und 42 bzw. 55 befinden, danach wird die Schaltwelle 28 zusammen mit den darin befindlichen Kontaktträgern mit dem Halter derart verbunden, daß die Arme 32 und 33 über die Schaltwalzenabschnitte 48 und 49 schnappen und das andere, bislang freie Ende der Schraubendruckfedern 39 und 40 über die entsprechendne Zapfen 54 an den Kontakthebeln 26 greifen. Daß dabei die beiden Nasen 26c in die Ausnehmungen 50 und 51 eingelegt sind, ist noch nachzutragen.For assembly, the springs 39, 40 are placed on their associated pins 37 and 38 on the base plate 30 of the holder; so then the contact lever 26 are inserted into the spaces 41 such that the contact levers are between the webs 43 and 42 and 55, then the control shaft 28 is connected to the holder together with the contact carriers therein such that the arms 32 and 33 snap over the shift drum sections 48 and 49 and grip the other, previously free end of the helical compression springs 39 and 40 via the corresponding pins 54 on the contact levers 26. It must still be added that the two lugs 26c are inserted into the recesses 50 and 51.

Danach wird die nun gebildete Einheit in das Unterteil 10 eingesetzt, wobei die in Figur 5 unten liegenden Abschnitte 59 und 60 des Halters in entsprechende Ausnehmungen (nicht dargestellt) im Bereich des Schenkelendes 22 der Kontaktträgerschienen 18 eingelegt werden.The unit that is now formed is then inserted into the lower part 10, the sections 59 and 60 of the holder lying at the bottom in FIG. 5 being in corresponding recesses (Not shown) are inserted in the region of the leg end 22 of the contact carrier rails 18.

An der Schaltwelle 28 befindet sich ein Fortsatz 61, der mit einem Schaltwerk des FI-Schalters zusammenwirkt.On the switching shaft 28 there is an extension 61 which interacts with a switching mechanism of the RCD.

Der Halter 30 und die Schaltwelle 28 sind aus Thermoplast hergestellt, so daß zwischen beiden eine optimale Reibung erzeugt wird.The holder 30 and the control shaft 28 are made of thermoplastic, so that an optimal friction is generated between the two.

Claims (7)

Kontaktanordnung in einem Installationsschalter, insbesondere einem Fehlerstrom- oder Differenzstromschutzschalter, mit wenigstens einem beweglichen Kontaktstück und je einem jedem beweglichen Kontaktstück zugeordneten festen Kontaktstück, wobei das bewegliche Kontaktstück an einem Kontakthebel befestigt ist, mit einem Kontaktträger zur Halterung und drehbeweglichen Führung des Kontakthebels, mit einer Kontaktdruck zwischen dem festen und beweglichen Kontaktstück erzeugenden Federanordnung, dadurch gekennzeichnet, daß als Kontaktträger eine Schwenkwelle (28) mit einer der Anzahl der beweglichen Kontaktstücke (27) entsprechenden Anzahl von quer zur Mittelachse der Schwenkwelle (28) verlaufenden Durchbrechungen (41) vorgesehen ist, in welche Schwenkwelle die Kontakthebel (26) eingesetzt sind, wobei die Kontakthebel selbst wiederum um eine Drehachse (26c, 52) in den Durchbrechungen drehbeweglich gelagert sind, daß die Schaltwelle in einem in dem Gehäuse des Installationsschalters festgelegten Halter (29) drehbar gelagert ist, und daß zwischen jedem Kontakthebel und dem Halter auf der dem beweglichen Kontaktstück entgegengesetzt liegenden Seite der Drehachse des Kontakthebels je eine Druckfeder (39) so angeordnet ist, daß sie den Kontakthebel um seine Drehachse in der Schaltwelle in Schließstellung beaufschlagt.Contact arrangement in an installation switch, in particular a residual current or residual current circuit breaker, with at least one movable contact piece and one fixed contact piece assigned to each movable contact piece, the movable contact piece being fastened to a contact lever, with a contact carrier for holding and rotatably guiding the contact lever, with a Contact pressure between the fixed and movable contact piece producing spring arrangement, characterized in that a pivot shaft (28) with a number of openings (41) running transversely to the central axis of the pivot shaft (28) corresponding to the number of movable contact pieces (27) is provided as the contact carrier, into which pivot shaft the contact levers (26) are inserted, the contact levers themselves in turn being rotatably mounted in the openings about an axis of rotation (26c, 52) that the selector shaft is located in a in the housing of the installation switch ers fixed holder (29) is rotatably mounted, and that between each contact lever and the holder on the opposite side of the movable contact piece of the axis of rotation of the contact lever, a compression spring (39) is arranged so that it the contact lever about its axis of rotation in the control shaft acted upon in the closed position. Kontaktanordnung nach Anspruch 1, dadurch gekennzeichnet, daß der Halter (29), die Schwenkwelle (28) mit den in der Schaltwelle eingesetzten Kontakthebel und die jedem Kontakthebel zugeordnete Feder (39) eine vormontierbare Einheit bilden, die im zusammengesetzten Zustand in das Gehäuse des Installationsgerätes einsetzbar ist.Contact arrangement according to claim 1, characterized in that the holder (29), the pivot shaft (28) with the contact lever used in the switching shaft and the spring (39) assigned to each contact lever form a preassembled unit which, when assembled, into the housing of the installation device can be used. Kontaktanordnung nach Anspruch 2, dadurch gekennzeichnet, daß der Halter (29) eine plattenförmige Basis (30) aufweist, an der je ein Maul (31) bildende Vorsprünge (32, 33) vorgesehen sind, die je einen kreisförmigen Raum teilweise umgrenzen, in welche Räume je ein an der Schaltwelle (28) vorgesehenes Walzenteil (48, 49) eingeschnappt ist, wobei die Maulöffnung geringfügig kleiner ist als der Durchmesser des Walzenteils.Contact arrangement according to Claim 2, characterized in that the holder (29) has a plate-shaped base (30), on each of which projections (32, 33) forming a mouth (31) are provided, each of which partially delimit a circular space into which Spaces a roller part (48, 49) provided on the selector shaft (28) is snapped in, the jaw opening being slightly smaller than the diameter of the roller part. Intallationsgerät nach Anspruch 3, dadurch gekennzeichnet, daß wenigstens ein Walzenteil (48, 49) ein über einen Teil des Umfangs verlaufende Rille (58) aufweist, in die ein Zahn (34) im zugehörigen kreisförmigen Raum eingreift und so eine Drehbegrenzung erzeugt.Installation device according to claim 3, characterized in that at least one roller part (48, 49) has a groove (58) running over part of the circumference, into which a tooth (34) engages in the associated circular space and thus generates a rotation limitation. Kontaktanordnung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß jede Drehbewegung der Schaltwelle (28) für die beweglichen Kontakthebel (26) einen Anschlag aufweist, der bezogen auf die Mittelachse der Schaltwelle diametral zur Drehachse des Kontakthebels gegenüberliegend angeordnet ist, dergestalt, daß nach Öffnen der Kontaktstellen die Federn jeden Kontakthebel gegen den Anschlag drücken und so die Kontakthebel mit der Schaltwelle fest verkoppeln.Contact arrangement according to one of the preceding claims, characterized in that each rotary movement of the switching shaft (28) for the movable contact lever (26) has a stop which is arranged diametrically opposite the axis of rotation of the contact lever with respect to the central axis of the switching lever, such that after opening of the contact points, the springs press each contact lever against the stop and thus firmly couple the contact lever to the selector shaft. Kontaktanordnung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß an der plattenförmigen Basis (30) des Halters (29) je ein Noppen (37) für je eine Feder (39) angeformt ist, deren Außendurchmesser dem Innendurchmesser der Federwindungen gleicht und an denen die Feder durch Reibung vormontierbar fixierbar ist.Contact arrangement according to one of the preceding claims, characterized in that on the plate-shaped base (30) of the holder (29) a knob (37) for each spring (39) is formed, the outside diameter of which is equal to the inside diameter of the spring turns and on which the The spring can be fixed by friction. Kontaktanordnung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß der Halter und die Schaltwelle je aus einem Thermoplast hergestellt sind, so daß die Reibung zwischen beiden gering ist und die Drehbewegung gegeneinander verschleißfrei erfolgen kann.Contact arrangement according to one of the preceding claims, characterized in that the holder and the control shaft are each made of a thermoplastic, so that the friction between the two is low and the rotary movement can be carried out against one another without wear.
EP93105553A 1992-04-09 1993-04-03 Installation apparatus Withdrawn EP0565009A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4211916 1992-04-09
DE19924211916 DE4211916A1 (en) 1992-04-09 1992-04-09 Installation device

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EP0565009A1 true EP0565009A1 (en) 1993-10-13

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CN (1) CN1079334A (en)
DE (1) DE4211916A1 (en)

Cited By (2)

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EP0869526A2 (en) * 1997-04-03 1998-10-07 Eaton Corporation Circuit breaker contact spring sub-assembly and method and apparatus for making, and circuit breaker incorporating same
CN104319190A (en) * 2014-10-15 2015-01-28 河南平高电气股份有限公司 Circuit breaker stationary contact base clamping tooling

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US3004125A (en) * 1959-06-18 1961-10-10 Licentia Gmbh Switch
DE1909358U (en) * 1964-11-11 1965-02-04 Stotz Kontakt Gmbh SWITCH WITH A HOLDING DEVICE ON THE CONTACT CARRIER FOR A CONTACT FINGER WORKING TOGETHER WITH A CONTACT PRESSURE SPRING.
FR2105077A2 (en) * 1970-09-23 1972-04-28 Legrand Sa
FR2484136A1 (en) * 1980-06-06 1981-12-11 Merlin Gerin Contact element for high current LV circuit breaker - has movable contact plates which are joined by brazing of contact head and shunt at opposite ends of body

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0869526A2 (en) * 1997-04-03 1998-10-07 Eaton Corporation Circuit breaker contact spring sub-assembly and method and apparatus for making, and circuit breaker incorporating same
EP0869526A3 (en) * 1997-04-03 1999-03-31 Eaton Corporation Circuit breaker contact spring sub-assembly and method and apparatus for making, and circuit breaker incorporating same
CN104319190A (en) * 2014-10-15 2015-01-28 河南平高电气股份有限公司 Circuit breaker stationary contact base clamping tooling

Also Published As

Publication number Publication date
DE4211916A1 (en) 1993-10-14
CN1079334A (en) 1993-12-08

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