EP0037921B1 - Device for a connecting terminal for the end of the winding of an inductive coil arranged in an electromagnetic switchgear - Google Patents

Device for a connecting terminal for the end of the winding of an inductive coil arranged in an electromagnetic switchgear Download PDF

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Publication number
EP0037921B1
EP0037921B1 EP81102113A EP81102113A EP0037921B1 EP 0037921 B1 EP0037921 B1 EP 0037921B1 EP 81102113 A EP81102113 A EP 81102113A EP 81102113 A EP81102113 A EP 81102113A EP 0037921 B1 EP0037921 B1 EP 0037921B1
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EP
European Patent Office
Prior art keywords
switchgear
cover part
shaped cover
coil
connecting piece
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
Application number
EP81102113A
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German (de)
French (fr)
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EP0037921A1 (en
Inventor
Ludwig Ing. Grad. Kohl
Peter Ing. Grad. Giegold
Karl Kraft
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BBC Brown Boveri AG Germany
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BBC Brown Boveri AG Germany
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Priority to AT81102113T priority Critical patent/ATE7181T1/en
Publication of EP0037921A1 publication Critical patent/EP0037921A1/en
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Publication of EP0037921B1 publication Critical patent/EP0037921B1/en
Expired legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/44—Magnetic coils or windings
    • H01H50/443—Connections to coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/14—Terminal arrangements

Definitions

  • the invention relates to an electromagnetic switching device with a coil and with a connecting terminal device for the electrically conductive connection of the winding end of the coil to the end of a power supply line, the connecting terminal device being a connecting piece to which the winding end of the coil is connected, and a screwable connector Has clamping screw for clamping the end of the power supply line.
  • connection terminal devices are often connected to the ends of the inductive coil immediately after completion, for example in a soldering process, but this entails the risk that the connection screws screwed into a connection angle become loose due to vibrations during a transport process in operation or on the shipping route and can even fall out if they are not so tightly screwed to the connection bracket that the screws cannot be removed automatically.
  • a tight screw connection is also undesirable, since in this case it is necessary to unscrew the connecting screw before connecting a connecting cable.
  • the object of the present invention is to eliminate the disadvantages described above or at least to reduce largely, and in particular to provide a terminal device for the described case of need, in which the connection screws can not be lost as long as a ichtung with a Harveyklemmenvor- 'provided inductive coil not with 1 em electromagnetic switching device is mounted, md in which also a subsequent automatic tightening the terminal screw as a result of transport J orter commonlyerept od. like.
  • the connecting piece is advantageously designed as a connecting bracket, one leg of which holds the clamping screw and the other side of which the contact lug and additionally a strain relief lug is formed.
  • the strain relief tab and the contact tab are attached in a U-shape to the connection bracket; the winding end is then inserted into the interior of the U and held therein by compressing the U-shaped strain relief tab and contact tab.
  • connection bracket for the contacting of winding ends of a coil and the connection screw that can be screwed into the thread with the pressure washer held captively on its head are combined with a separate cover molding, which is able to hold the connection bracket and the clamping screw equipped with a pressure washer captively.
  • a molded cover part provides increased protection against contact in the assembled position of the electromagnetic switching device.
  • assembly and connection of the winding end is considerably simplified.
  • connection bracket To hold the connection bracket in the interior of the cover molding, latching means are provided on both sides of the connection bracket, for example lugs which engage in grooves arranged in the cover molding or vice versa. Combinations of locking lugs and opposite grooves are also possible. This arrangement ensures that the connection bracket is held captively in the interior of the molded cover part.
  • the molded cover part is designed as an essentially rectangular cap, into which the connection angle and the clamping screw can be inserted from an open cap side and in which the clamping screw is held captively even in the position unscrewed from the connection angle.
  • the molded cover part can be outwardly directed, supporting and given if have locking parts that interact in the assembled position with corresponding formations on the housing.
  • a screw opening surrounded by a cylindrical elevation is advantageously provided on the cover molding on its upper wall adjacent to the open cap side, the center point of which coincides with the axis of the clamping screw after assembly of the connection angle and the clamping screw.
  • the wall facing the inside of the molded cover part has two inclined surfaces serving as a stop surface for a roof-shaped pressure plate held at the head of the clamping screw to be assigned in the area around the screw opening.
  • FIG. 1 is used again for further explanation.
  • To clamp the winding end 13 of the coil (not shown), it is fed to the tabs in such a way that the stripped end 19 of the winding end 13 leads into the bending area of the contact tab 12, the end of the insulated area the winding end 13, however, is inserted into the bending area of the strain relief tab 11.
  • both tabs are squeezed together, it may be expedient to expose the contact tab 12 to an increased pressure in order to achieve a particularly good and permanent contact connection between the stripped end 19 of the winding end 13 and the contact tab 12.
  • connection screw 20 with a roof-shaped pressure plate 22, which is held captively on its head 21, is now screwed into the threaded opening 14 fairly far or even up to the stop.
  • the molded cover part 24 is equipped with a screw opening 33 surrounded by a cylindrical elevation 32, the center of which coincides with the axis of the connecting screw 20 in the position mounted with the connecting bracket 10 and the closing screw 20.
  • a recess 34 which is located in a side wall of the molded cover part 24, has the mounted position of this molded cover part 24 in a switch housing in the direction of the housing exterior.
  • This recess 34 is used for the introduction of connection lines (not shown) for the inductive coil.
  • a flat surface 35 is provided on a lateral outer wall of the molded cover part 24, which is approximately adjacent to the recess 34 and serves to receive coil data and / or a clamping designation in the form of an imprint, an adhesive label, hot stamping or the like.
  • This area 35 is to be characterized as a designation area.
  • an upper housing part 42 can finally be placed on the lower housing part 38.
  • This upper housing part 42 is also only indicated. It can be seen from the illustration, however, that after the housing parts 38 and 42 have been assembled, the completely equipped molded cover part 24 is clamped between the corners of the housing parts mentioned and is held immovably here.
  • FIG. 3 A view of the assembly, as described, mounted and clamped between the housing parts 38 and 42 is illustrated by FIG. 3, which was already considered previously.
  • FIG. 4 shows an embodiment variant which grants a thrust washer particularly favorable support.
  • This illustration illustrates a vertical section through the upper region of a molded cover part 43, in which the wall pointing into the interior of this part in the region around a screw opening 44 has two stop surfaces for a roof-shaped thrust washer 46 held on the head of the associated connecting screw 45 has inclined surfaces 47 and 48.
  • Such a shaping of the inner wall of the molded cover part 43 in the area mentioned prevents an undesired inclination of the thrust washer 46, which means a further simplification and, above all, an additional guarantee for correct assembly.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Coils Of Transformers For General Uses (AREA)

Abstract

1. Electromagnetic switchgear having a coil and a terminal device for the electrically conductive connection of the winding end (13) of the coil to the end of a current supply line, the terminal device comprising a connecting piece (10), to which the winding end (13) of the coil is connected, and a terminal screw (20, 21) which can be screwed into the connecting piece for clamping the end of the current supply line, characterized in that a contact tongue (12) for clamping the winding end (13) of the coil is integrally formed on the connecting piece (10), in that the connecting piece (10) is held captive in a shaped cover part (24) consisting of insulating material, so that the connecting piece (10) forms one unit with the shaped cover part (24), and in that the shaped cover part (24) is held captive on the housing (38, 42) of the switchgear.

Description

Die Erfindung bezieht sich auf ein elektromagnetisches Schaltgerät mit einer Spule und mit einer Anschlussklemmenvorrichtung zur elektrisch leitenden Verbindung des Wicklungsendes der Spule mit dem Ende einer Stromzuführungsleitung, wobei die Anschlussklemmenvorrichtung ein Anschlussstück, an dem das Wicklungsende der Spule angeschlossen ist, und eine in das Anschlussstück einschraubbare Klemmschraube zum Festklemmen des Endes der Stromzuführungsleitung aufweist.The invention relates to an electromagnetic switching device with a coil and with a connecting terminal device for the electrically conductive connection of the winding end of the coil to the end of a power supply line, the connecting terminal device being a connecting piece to which the winding end of the coil is connected, and a screwable connector Has clamping screw for clamping the end of the power supply line.

Solche Anschlussklemmenvorrichtungen werden häufig unmittelbar nach Fertigstellung der induktiven Spule mit deren Enden - beispielsweise in einem Lötvorgang - verbunden, was aber die Gefahr mit sich bringt, dass die in einen Anschlusswinkel eingeschraubten Anschlussschrauben sich durch Erschütterungen während eines Transportvorganges im Betrieb oder auf dem Versandwege lösen und sogar herausfallen können, wenn sie mit dem Anschlusswinkel nicht so fest verschraubt sind, dass ein selbsttätiges Herausdrehen der Schrauben ausgeschlossen ist. Einefeste Verschraubung ist allerdings auch unerwünscht, da es in diesem Falle des Herausdrehens der Anschlussschraube vor dem Anklemmen einer Anschlussleitung bedarf.Such connection terminal devices are often connected to the ends of the inductive coil immediately after completion, for example in a soldering process, but this entails the risk that the connection screws screwed into a connection angle become loose due to vibrations during a transport process in operation or on the shipping route and can even fall out if they are not so tightly screwed to the connection bracket that the screws cannot be removed automatically. However, a tight screw connection is also undesirable, since in this case it is necessary to unscrew the connecting screw before connecting a connecting cable.

Auch wenn man die induktiven Spulen ohne Anschlussklemmenvorrichtung lagert bzw. verwendet und erst bei der Montage des elektromagnetischen Schaltgeräte die Wicklungsenden der Spule mit der Anschlussklemmenvorrichtung verbindet, besteht noch der unerwünschte Zustand, dass die Anschlussschraube von vornherein sehr tief und womöglich fest in den Anschlusswinkel eingeschraubt ist oder, dass sich die Anschlussschraube während eines Transport- oder Versandvorganges durch Erschütterungen selbsttätig in den Anschlusswinkel einschraubt, so dass am Aufstellungsort des elektromagnetischen Schaltgerätes vor dem Anschliessen einer Stromzufürungsleitung für die induktive Spule zunächst die entsprechenden Anschlussschrauben herausgeschraubt werden müssen oder es besteht sogar die Gefahr, dass das Ende der Stromzuführungsleitung versehentlich nicht vorschriftsmässig eingeklemmt wird, sondern stattdessen oberhalb einer Druckscheibe eingeführt wird und nur ein scheinbar fester und dauerhafter Verbund zwischen Anschlussklemmenvorrichtung und dem Ende der Stromzuführungsleitung hergestellt wird, welcher sich beim Betrieb des elektromagnetischen Schaltgerätes löst und zu Kontaktausfällen und somit zu erheblichen Betriebsstörungen führen kann.Even if the inductive coils are stored or used without a terminal device and only connect the winding ends of the coil to the terminal device when the electromagnetic switchgear is installed, there is still the undesirable condition that the connecting screw is screwed very deeply and possibly firmly into the connection bracket from the outset or that the connection screw automatically screws into the connection bracket due to vibrations during a transport or shipping process, so that at the installation site of the electromagnetic switching device, before connecting a power supply line for the inductive coil, the corresponding connection screws must first be unscrewed or there is even a risk of that the end of the power supply line is accidentally not clamped properly, but instead is inserted above a thrust washer and only an apparently firm and permanent bond z wipe connecting terminal device and the end of the power supply line is produced, which loosens during operation of the electromagnetic switching device and can lead to contact failures and thus to significant malfunctions.

Aufgabe der vorliegenden Erfindung ist es, die geschilderten Nachteile zu beseitigen oder wenigstens weitgehend zu mindern, insbesondere eine Anschlussklemmenvorrichtung für den geschilderten Bedarfsfall zu schaffen, bei welcher die Anschlussschrauben nicht verlorengehen können, solange eine mit einer Anschlussklemmenvor- 'ichtung versehene induktive Spule noch nicht mit 1em elektromagnetischen Schaltgerät montiert ist, md bei welcher auch ein späteres selbsttätiges Eindrehen der Anschlussschraube infolge Trans- Jorterschütterungen od. dgl. wenigstens weitgeiend vermieden wird.The object of the present invention is to eliminate the disadvantages described above or at least to reduce largely, and in particular to provide a terminal device for the described case of need, in which the connection screws can not be lost as long as a ichtung with a Anschlussklemmenvor- 'provided inductive coil not with 1 em electromagnetic switching device is mounted, md in which also a subsequent automatic tightening the terminal screw as a result of transport J orterschütterungen od. like. weitgeiend at least avoided.

Diese Aufgabe wird erfindungsgemäss dadurch gelöst, dass am Anschlussstück eine Kontaktlasche zum Festklemmen des Wicklungsendes der Spule angeformt ist, dass das Anschulssstück in 3inem aus Isolierstoff bestehenden Abdeckformteil unverlierbar gehalten ist, so dass das 4nschlussstück mit dem Andeckformteil eine Einheit bildet, und dass das Abdeckformteil an dem Gehäuse des Schaltgerätes unverlierbar befestigt ist.This object is inventively achieved in that on the connecting piece a contact tab for clamping the winding end of the coil is formed, that the Anschulssstück is held captive in 3 INEM consisting of insulating molded cover part such that the 4nschlussstück with the Andeckformteil forms a unit, and that the cover part is captively attached to the housing of the switching device.

In vorteilhafter Weise ist das Anschlussstück als Anschlusswinkel ausgebildet, dessen einer Schenkel die Klemmschraube aufnimmt und an dessen anderem Schenkel die Kontaktlasche und zusätzlich eine Zugentlastungslasche angeformt ist. Die Zugentlastungslasche und die Kontaktlasche sind U-förmig an dem Anschlusswinkel angebracht; das Wicklungsende wird dann in das Innere des U eingelegt und darin durch Zusammendrücken der U-förmigen Zugentlastungslasche und Kontaktlasche festgehalten.The connecting piece is advantageously designed as a connecting bracket, one leg of which holds the clamping screw and the other side of which the contact lug and additionally a strain relief lug is formed. The strain relief tab and the contact tab are attached in a U-shape to the connection bracket; the winding end is then inserted into the interior of the U and held therein by compressing the U-shaped strain relief tab and contact tab.

Der metallische Anschlusswinkel für die Kontaktierung von Wicklungsenden einer Spule sowie die in das Gewinde einschraubbare Anschlussschraube mit an ihrem Kopf unverlierbar gehalterter Druckscheibe werden mit einem gesonderten Abdeckformteil kombiniert, welches den Anschlusswinkel und auch die mit einer Druckscheibe, ausgestattete Klemmschraube unverlierbar aufzunehmen vermag. Ein derartiges Abdeckformteil bewirkt einen erhöhten Berührungsschutz in montierter Lage des elektromagnetischen Schaltgerätes. Darüberhinaus wird auch die Montage und das Anschliessen des Wicklungsendes wesentlich vereinfacht.The metallic connection bracket for the contacting of winding ends of a coil and the connection screw that can be screwed into the thread with the pressure washer held captively on its head are combined with a separate cover molding, which is able to hold the connection bracket and the clamping screw equipped with a pressure washer captively. Such a molded cover part provides increased protection against contact in the assembled position of the electromagnetic switching device. In addition, the assembly and connection of the winding end is considerably simplified.

Zur Halterung des Anschlusswinkels im Inneren des Abdeckformteiles sind beidseitig am Anschlusswinkel Rastmittel vorgesehen, beispielsweise Nasen, die in im Abdeckformteil angeordnete Nuten eingreifen oder umgekehrt. Darüberhinaus sind auch Kombinationen von Rastnasen und gegenüberliegenden Nuten möglich. Durch diese Anordnung ist eine unverlierbare Halterung des Anschlusswinkels im Inneren des Abdeckformteiles gewährleistet.To hold the connection bracket in the interior of the cover molding, latching means are provided on both sides of the connection bracket, for example lugs which engage in grooves arranged in the cover molding or vice versa. Combinations of locking lugs and opposite grooves are also possible. This arrangement ensures that the connection bracket is held captively in the interior of the molded cover part.

Gemäss einer weiteren vorteilhaften Ausgestaltung ist das Abdeckformteil als im wesentlichen rechteckige Kappe ausgebildet, in die der Anschlusswinkel und die Klemmschraube von einer offenen Kappenseite her einfügbar sind und in der die Klemmschraube auch in aus dem Anschlusswinkel herausgeschraubter Stellung unverlierbar gehalten ist.According to a further advantageous embodiment, the molded cover part is designed as an essentially rectangular cap, into which the connection angle and the clamping screw can be inserted from an open cap side and in which the clamping screw is held captively even in the position unscrewed from the connection angle.

In einer weiteren vorteilhaften Ausgestaltung der Erfindung kann das Abdeckformteil nach aussen gerichtete Führungs-, Stütz- und gegebenenfalls Rastteile aufweisen, die in montierter Lage mit entsprechenden Ausformungen an dem Gehäuse zusammenwirken.In a further advantageous embodiment of the invention, the molded cover part can be outwardly directed, supporting and given if have locking parts that interact in the assembled position with corresponding formations on the housing.

Weiterhin ist vorteilhafterweise am Abdeckformteil an seiner oberen, an die offene Kappenseite angrenzenden Wandung eine von einer zylindrischen Erhebung umgebene Schrauböffnung vorgesehen, deren Mittelpunkt nach der Montage des Anschlusswinkels und der Klemmschraube mit der Achse der Klemmschraube zusammenfällt. Dadurch wird die Klemmschraube selbst im Abdeckformteil unverlierbar gehalten und die Einführung eines Werkzeuges hin zum Klemmschraubenkopf wird erleichtert. Darüberhinaus wird durch die zylindrische Erhebung ein weiterer Berührungsschutz erzielt.Furthermore, a screw opening surrounded by a cylindrical elevation is advantageously provided on the cover molding on its upper wall adjacent to the open cap side, the center point of which coincides with the axis of the clamping screw after assembly of the connection angle and the clamping screw. As a result, the clamping screw is held captive even in the cover molding and the introduction of a tool towards the clamping screw head is facilitated. In addition, further protection against contact is achieved by the cylindrical elevation.

Damitdie Klemmschraube nichtvollständig herausgedreht werden kann, besitzt die ins Innere des Abdeckformteiles weisende Wandung im Bereich um die Schrauböffnung zwei als Anschlagfläche für eine am Kopf der zuzuordnenden Klemmschraube gehaltene dachförmige Druckscheibe dienende Schrägflächen.So that the clamping screw cannot be completely unscrewed, the wall facing the inside of the molded cover part has two inclined surfaces serving as a stop surface for a roof-shaped pressure plate held at the head of the clamping screw to be assigned in the area around the screw opening.

Weiter kann an einer der seitlichen Aussenwandungen des Abdeckformteiles eine ebene Fläche zur Aufnahme von Spulendaten und/oder einer Klemmenbezeichnung in Form eines Aufdruckes, eines Klebeschildes, einer Prägung od. dgl. vorgesehen sein. Damit die Anschlussleitungen für die Spule in das Abdeckformteil leicht eingeführt werden können und gut geführt sind, besitzt das Abdeckformteil in seiner in montierter Lage in Richtung des Gehäuseäusseren des Schaltgerätegehäuses weisenden seitlichen Wandung eine Ausnehmung.Furthermore, a flat surface for receiving coil data and / or a terminal designation in the form of an imprint, an adhesive label, an embossing or the like can be provided on one of the lateral outer walls of the molded cover part. So that the connection lines for the coil can be easily inserted into the cover molding and are well guided, the cover molding has a recess in its side wall in the mounted position facing the housing exterior of the switchgear housing.

Günstig ist es, den Isolierstoff, aus dem das Andeckformteil gebildet ist, mit einem Farbstoff zu vermischen, so dass ein Sortimenteinanderan sich gleicher jedoch farblich unterschiedlicher Abdeckformteile gebildet werden kann.It is expedient to mix the insulating material from which the cover molding is formed with a dye, so that an assortment of identical but different color cover moldings can be formed.

Anhand der Zeichnung, in der ein Ausführungsbeispiel der Erfindung dargestellt ist, sollen die Erfindung sowie weitere vorteilhafte Ausgestaltungen der Erfindung näher erläutert und beschrieben werden. Es zeigt:

  • Fig. 1 in einer perspektivischen Explosionsdarstellung diejenigen Einzelteile, aus der sich die erfindungsgemässe Anschlussklemmenvorrichtung zusammensetzt,
  • Fig. 2 eine perspektivische Sicht in gegenüber Fig. 1 vergrössertem Massstab auf einen Anschlusswinkel,
  • Fig. 3 in perspektivischer Darstellung die in Fig. 1 dargestellten Teile in ihrer an einem elektromagnetischen Schaltgerät montierter Lage, und
  • Fig. 4 eine Ausgestaltungsvariante für einen Bereich eines Abdeckformteiles im Schnitt.
The invention and further advantageous refinements of the invention are to be explained and described in more detail with reference to the drawing, in which an exemplary embodiment of the invention is shown. It shows:
  • 1 is a perspective exploded view of the individual parts from which the terminal device according to the invention is composed,
  • FIG. 2 shows a perspective view, on a scale enlarged compared to FIG. 1, of a connection angle, FIG.
  • 3 is a perspective view of the parts shown in FIG. 1 in their position mounted on an electromagnetic switching device, and
  • Fig. 4 shows an embodiment variant for an area of a molded cover part in section.

In der Explosionsdarstellung in Fig. 1 ist - in der Zeichnung rechts in der Mitte - ein metallischer Anschlusswinkel 10 mit einer Zugentlastungslasche 11 für die Halterung und mit einer Kontaktlasche 12 für die Kontaktierung des Wicklungsendes 13 einer nicht näher dargestellten induktiven Spule gezeigt. Eine in ihren Einzelheiten besser erkennbare und im übrigen vergrössert und aus einer anderen Sicht gezeigten Darstellung des metallischen Anschlusswinkels 10 veranschaulicht die Fig. 2. Erkennbar sind auch hier die Zugentlastungslasche 11 sowie die Kontaktlasche 12, ferner eine mit einer kleinen Einziehung versehene Gewindeöffnung 14 und, als wesentliches Montagemerkmal, seitlich einander gegenüberliegende Rastnasen 15 und 16, deren Aufgabe im folgenden noch erläutert werden soll. Erwähnt sei auch noch eine Ausstanzung 17, die jedoch keine funktionelle Bedeutung hat, sondern vielmehr der leichteren und auch scharfkantigeren Abkantung eines Schenkels 18, von dem die Zugentlastungslasche 11 und die Kontaktlasche 12 ausgehen dient.In the exploded view in Fig. 1 - in the drawing on the right in the middle - a metallic connection bracket 10 is shown with a strain relief tab 11 for the holder and with a contact tab 12 for contacting the winding end 13 of an inductive coil, not shown. FIG. 2 shows a representation of the metallic connection bracket 10 that is better recognizable in its details and enlarged and shown from a different perspective. Here, too, the strain relief tab 11 and the contact tab 12 can be seen, furthermore a threaded opening 14 provided with a small indentation, and as an essential assembly feature, laterally opposite locking lugs 15 and 16, the task of which will be explained in the following. Also to be mentioned is a punched-out section 17, which, however, has no functional meaning, but rather the lighter and also sharper-edged beveling of a leg 18, from which the strain relief tab 11 and the contact tab 12 are used.

Zur weiteren Erläuterung dient nun wieder die Fig. 1. Zum Anklemmen des Wicklungsendes 13 der (nicht gezeigten) Spule wird dieses so den Laschen zugeführt, dass das abisolierte Ende 19 des Wicklungsendes 13 in den Biegebereich der Kontaktlasche 12 geführt, das Ende des isolierten Bereiches des Wicklungsendes 13 hingegen in den Biegebereich der Zugentlastungslasche 11 eingefügt wird. Nunmehr werden beide Laschen zusammengequetscht, wobei es zweckmässig sein kann, die Kontaktlasche 12 einem erhöhten Druck auszusetzen, um eine besonders gute und dauerhafte Kontaktverbindung zwischen dem abisolierten Ende 19 des Wicklungsendes 13 und der Kontaktlasche 12 zu erzielen.FIG. 1 is used again for further explanation. To clamp the winding end 13 of the coil (not shown), it is fed to the tabs in such a way that the stripped end 19 of the winding end 13 leads into the bending area of the contact tab 12, the end of the insulated area the winding end 13, however, is inserted into the bending area of the strain relief tab 11. Now both tabs are squeezed together, it may be expedient to expose the contact tab 12 to an increased pressure in order to achieve a particularly good and permanent contact connection between the stripped end 19 of the winding end 13 and the contact tab 12.

In die Gewindeöffnung 14 wird nunmehr eine über dem metallischen Anschlusswinkel 10 dargestellte Anschlussschraube 20 mit einer an ihrem Kopf 21 unverlierbar gehaltenen dachförmigen Druckscheibe 22 ziemlich weit oder sogar bis zum Anschlag eingeschraubt.A connection screw 20 with a roof-shaped pressure plate 22, which is held captively on its head 21, is now screwed into the threaded opening 14 fairly far or even up to the stop.

Diese aus dem metallischen Anschlusswinkel 10, dem Wicklungsende 13 und der Anschlussschraube 20 zusammengesetzte Einheit kann nunmehr, und zwar etwa in Richtung des Pfeiles 23, einem aus Isolierstoff bestehenden Abdeckformteil 24 zugeführt werden. Dieses Abdeckformteil 24 weist die Form einer im wesentlichen rechteckigen Kappe auf, deren offene Kappenseite zum metallischen Anschlusswinkel 10 gerichtet ist. Erwähnenswert ist, dass dieses Abdeckformteil 24 sowohl in einer seitlichen Aussenwandung 25 als auch in einer Zwischenwandung 26 Ausbrüche 27 und 28 enthält, in welche in montierter Lage die Rastnasen 15 und 16 (siehe Fig. 2) einzurasten vermögen. Ausserdem weist das Abdeckformteil 24 nach aussen (in der Darstellung nach unten) gerichtete, einstückig angeformte Führungs- und Stützteile 29 und 30 auf, welche dazu dienen, mit entsprechenden Ausformungen an einem der zu montierenden Gehäuseteile eines elektromagnetischen Schaltgerätes zusammenzuwirken. I n seiner oberen, an die offene Kappenseite angrenzenden Wandung 31 ist das Abdeckformteil 24 mit einer von einer zylindrischen Erhebung 32 umgebenen Schrauböffnung 33 ausgestattet, deren Mittelpunkt in mit dem Anschlusswinkel 10 und der Abschlussschraube 20 montierter Lage mit der Achse der Anschlussschraube 20 zusammenfällt.This unit, which is composed of the metallic connection angle 10, the winding end 13 and the connection screw 20, can now be supplied to a cover molded part 24 made of insulating material, approximately in the direction of the arrow 23. This molded cover part 24 has the shape of an essentially rectangular cap, the open cap side of which is directed towards the metallic connection bracket 10. It is worth mentioning that this molded cover part 24 contains cutouts 27 and 28 in both a lateral outer wall 25 and in an intermediate wall 26, into which the locking lugs 15 and 16 (see FIG. 2) can snap in the assembled position. In addition, the molded cover part 24 has outwardly (in the illustration downward), integrally molded guide and support parts 29 and 30, which serve to interact with corresponding formations on one of the housing parts of an electromagnetic switching device to be mounted. In its upper wall 31, which adjoins the open cap side, the molded cover part 24 is equipped with a screw opening 33 surrounded by a cylindrical elevation 32, the center of which coincides with the axis of the connecting screw 20 in the position mounted with the connecting bracket 10 and the closing screw 20.

Weitere Ausgestaltungen des Abdeckformteiles 24 sind in der Darstellung in Fig. 3 erkennbar, und zwar eine Ausnehmung 34, welche sich in einer seitlichen Wandung des Abdeckformteiles 24, befindet, die montierter Lage dieses Abdeckformteiles 24 in einem Schaltergehäuse in Richtung des Gehäuseäusseren weist. Diese Ausnehmung 34 dient der Einführung von (nicht dargestellten) Anschlussleitungen für die induktive Spule. Bemerkenswert ist weiterhin, dass an einer der Ausnehmung 34 etwa benachbarten seitlichen Aussenwandung des Abdeckformteiles 24 eine ebene Fläche 35 vorgesehen ist, die der Aufnahme von Spulendaten und/oder einer Klemmbezeichnung in Form eines Aufdruckes, eines Klebeschildes, einer Heissprägung od. dgl. dient. Diese Fläche 35 ist als Bezeichnungsfläche zu charakterisieren.Further configurations of the molded cover part 24 can be seen in the illustration in FIG. 3, and a recess 34, which is located in a side wall of the molded cover part 24, has the mounted position of this molded cover part 24 in a switch housing in the direction of the housing exterior. This recess 34 is used for the introduction of connection lines (not shown) for the inductive coil. It is also noteworthy that a flat surface 35 is provided on a lateral outer wall of the molded cover part 24, which is approximately adjacent to the recess 34 and serves to receive coil data and / or a clamping designation in the form of an imprint, an adhesive label, hot stamping or the like. This area 35 is to be characterized as a designation area.

Zurweiteren Montage sei noch einmal die Fig. 1 betrachtet. Nachdem - wie bereits erwähnt - der Anschlusswinkel 10 mit dem (etwa in Richtung des Pfeiles 36 zugeführten) Wicklungsende 13 bzw. dessen abisoliertem Ende 19 verquetscht und mit der (in Richtung des Pfeiles 37 zugeführten) Anschlussschraube 20 verschraubt worden und diese gesamte Einheit in das Abdeckformteil 24 eingebracht und darin verrastet worden ist, kann diese vom Abdeckformteil 24 umgebene Baugruppe einem unteren Gehäuseteil 38, von dem allerdings nur ein kleiner Eckabschnitt gezeigt worden ist, zugeführt werden. Hierbei greifen die bereits erwähnten Führungs- und Stützteile 29 und 30 zwischen Wandungsteile 39, 40 und 41 des Gehäuseteiles 38 ein.For further assembly, FIG. 1 is considered again. After - as already mentioned - the connection bracket 10 is squeezed with the winding end 13 (approximately in the direction of arrow 36) or its stripped end 19 and screwed with the connecting screw 20 (in the direction of arrow 37) and this entire unit is screwed into the Cover molding 24 has been introduced and locked therein, this assembly surrounded by the cover molding 24 can be fed to a lower housing part 38, of which, however, only a small corner section has been shown. The guide and support parts 29 and 30 already mentioned engage between wall parts 39, 40 and 41 of the housing part 38.

Sind im Gehäuseteil 38 für ein elektromagnetisches Schaltgerät auch die übrigen, in dieser Darstellung nicht angedeuteten Teile montiert, so kann schliesslich ein oberes Gehäuseteil 42 auf das untere Gehäuseteil 38 aufgesetzt werden. Dieses obere Gehäuseteil 42 ist auch nur andeutungsweise gezeigt. Es kann der Darstellung aber entnommen werden, dass nach erfolgter Montage der Gehäuseteile 38 und 42 das komplett bestückte Abdeckformteil 24 zwischen den gezeigten Ecken der genannten Gehäuseteile eingespannt und hier unverrückbar gehalten ist.If the other parts (not indicated in this illustration) are also mounted in the housing part 38 for an electromagnetic switching device, an upper housing part 42 can finally be placed on the lower housing part 38. This upper housing part 42 is also only indicated. It can be seen from the illustration, however, that after the housing parts 38 and 42 have been assembled, the completely equipped molded cover part 24 is clamped between the corners of the housing parts mentioned and is held immovably here.

Eine Sicht auf die, wie geschildert, montierte und zwischen den Gehäuseteilen 38 und 42 eingespannte Baueinheit veranschaulicht die bereits vorher in Betracht gezogene Fig. 3. Erkennbar hierin sind, ausser den mehr schematisch als wirklichkeitsgetreu angedeuteten Gehäuseteilen 38 und 42, das Abdeckformteil 24 mit dem darin aufgenommenen metallischen Anschlusswinkel 10, der Anschlussschraube 20 mit dem Schraubenkopf 21 sowie der nahe diesem Schraubenkopf 21 gehaltenen dachförmigen Druckscheibe 22.A view of the assembly, as described, mounted and clamped between the housing parts 38 and 42 is illustrated by FIG. 3, which was already considered previously. In addition to the housing parts 38 and 42, which are indicated more schematically as being realistic, the molded cover part 24 with the the metallic connection bracket 10 received therein, the connection screw 20 with the screw head 21 and the roof-shaped pressure disk 22 held close to this screw head 21.

In diesem Zusammenhang ist zu erwähnen, dass die Anschlussschraube nach erfolgter Montage im Abdeckformteil 24 aus der Gewindeöffnung 14 im Anschlusswinkel 10 völlig herauszuschrauben ist, wodurch die Gefahr des selbsttätigen Einschraubens infolge Erschütterungen od. dgl. praktisch ausgeschlossen ist. Ein Herausfallen dieser Anschlussschraube 20 ist dennoch nicht zu befürchten, denn sie wird im Bereich ihres Schraubenkopfes 21 von der zylindrischen Erhebung 32 um die Schrauböffnung 33 im Abdeckformteil 24 geführt und gehalten, kann aber durch die Schrauböffnung 33 auch nicht herausfallen, da sich ihre am Kopfende gehaltene Druckscheibe 22 an der oberen Wandung des Abdeckformteiles 24 abstützt.In this context, it should be mentioned that after installation in the cover molding 24, the connection screw is to be completely unscrewed from the threaded opening 14 in the connection bracket 10, whereby the risk of automatic screwing in due to vibrations or the like is practically excluded. A falling out of this connecting screw 20 is nevertheless not to be feared, because it is guided and held in the region of its screw head 21 by the cylindrical elevation 32 around the screw opening 33 in the cover molding 24, but cannot fall out through the screw opening 33 either, since it is at the head end held thrust washer 22 is supported on the upper wall of the cover molding 24.

Eine Ausgestaltungsvariante, welche einer Druckscheibe eine besonders günstige Abstützung gewährt, zeigt die Fig. 4. Diese Darstellung veranschaulicht einen senkrechten Schnitt durch den oberen Bereich eines Abdeckformteiles 43, bei welchem die ins Innere dieses Teiles weisende Wandung im Bereich um eine Schrauböffnung 44 zwei Anschlagflächen für eine am Kopf der zugeordneten Anschlussschraube 45 gehaltene dachförmige Druckscheibe 46 dienende Schrägflächen 47 und 48 aufweist. Eine derartige Ausformung der Innenwandung des Abdeckformteiles 43 im genannten Bereich verhindert eine unerwünschte Schrägstellung der Druckscheibe 46, was eine weitere Vereinfachung und vor allem eine zusätzliche Gewähr für eine richtige Montage bedeutet.FIG. 4 shows an embodiment variant which grants a thrust washer particularly favorable support. This illustration illustrates a vertical section through the upper region of a molded cover part 43, in which the wall pointing into the interior of this part in the region around a screw opening 44 has two stop surfaces for a roof-shaped thrust washer 46 held on the head of the associated connecting screw 45 has inclined surfaces 47 and 48. Such a shaping of the inner wall of the molded cover part 43 in the area mentioned prevents an undesired inclination of the thrust washer 46, which means a further simplification and, above all, an additional guarantee for correct assembly.

Erwähnt wurde bereits die - in Fig. 3 deutlich erkennbare - ebene Fläche 35, welche auch als Bezeichnungsfläche benannt werden kann. Eine zusätzliche Bezeichnungsmöglichkeit ist darin zu sehen, das bzw. die einem elektromagnetischen Schaltgerät zuzuordnenden Abdeckformteile aus einem Sortiment einander an sich gleicher, jedoch farblich unterschiedlicher Abdeckformteile auszuwählen. Eine derartige farbliche Kennzeichnung kann sowohl Hinweise auf Betriebsdaten für die induktive Wicklung geben, ebensogut aber auch als Hinweis für Schaltertyp oder sonstige spezifische Merkmale des Schalters geben.The flat surface 35, which can be clearly seen in FIG. 3, has already been mentioned, which can also be named as a designation surface. An additional designation option can be seen in the fact that the molded cover parts to be assigned to an electromagnetic switching device are selected from an assortment of covers that are identical to one another but have different colors. Such a colored identification can give information about operating data for the inductive winding, but it can also give information about the type of switch or other specific characteristics of the switch.

Claims (12)

1. Electromagnetic switchgear having a coil and a terminal device for the electrically conductive connection of the winding end (13) of the coil to the end of a current supply line, the terminal device comprising a connecting piece (10), to which the winding end (13) of the coil is connected, and a terminal screw (20, 21) which can be screwed into the connecting piece for clamping the end of the current supply line, characterized in that a contact tongue (12) for clamping the winding end (13) of the coil is integrally formed on the connecting piece (10), in that the connecting piece (10) is held captive in a shaped cover part (24) consisting of insulating material, so that the connecting piece (10) forms one unit with the shaped cover part (24), and in that the shaped cover part (24) is held captive on the housing (38, 42) of the switchgear.
2. Switchgear as claimed in claim 1, characterized in that the connecting piece (10) is formed as a connection angle, one of whose legs accomodates the terminal screw (20, 21) and on the other leg of which the contact tongue (12) and, in addition, a tension-relieving tongue (11) are integrally formed.
3. Switchgear as claimed in claim 2, characterized in that the tension-relieving tongue (11) and the contact tongue (12) are mounted in a U-shaped manner on the connection angle and in that the winding end (13) is inserted in the interior of the U-shape and is retained therein by pressing together the U-shaped tension-relieving tongue (11) and contact tongue (12).
4. Switchgear as claimed in one of claims 1 to 3, characterized in that the connection angle is equipped with lateral detent projections (15, 16), which are opposite one another, or with grooves for accommodating detent projections or with a combination of a detent projection and an opposite groove.
5. Switchgear as claimed in one of claims 1 to 4, characterized in that the shaped cover part (24) is formed as an essentially rectangular cap, into which the connection angle and the terminal screw (20, 21) can be inserted from an open side of the cap and in which the terminal screw is also held captive even when the connection angle is in the unscrewed position.
6. Switchgear as claimed in one of claims 1 to 5, characterized in that in lateral outer walls (25) and/or intermediate walls (26), the shaped cover part (24) comprises breaks (27, 28) or depressions for the engaged accomodation of detent projections (15, 16) of the connection angle or, instead of this, is provided with detent projections which can engage at the connection angle or, finally, with a combination of these detent means.
7. Switchgear as claimed in one of claims 1 to 6, characterized in that outwardly directed guide parts, support parts and, if necessary, detent parts are disposed on the shaped cover part (24) and, in the assembled position, cooperate with corresponding shaped parts (39, 40, 41) on a housing part (38) of the switchgear.
8. Switchgear as claimed in one of claims 1 to 7, characterized in that the shaped cover part (24) comprises, at its upper wall which is adjacent to the open cap side, a screw opening (33) which is surrounded by a cylindrical raised part (32), the centre point of this screw opening (33) coinciding with the axis of the terminal screw after assembly of the connection angle and the terminal screw (20,21).
9. Switchgear as claimed in claim 8, characterized in that the wall facing the interior of the shaped cover part (43) comprises in the region around the screw opening (44) two inclined faces (47, 48) which are used as stop faces for a roof-shaped pressure disc (46) retained at the head of the terminal screw (45) to be associated.
10. Switchgear as claimed in one of claims 1 to 9, characterized in that on one of the lateral outer walls of the shaped cover part (24) there is provided a flat face (35) for accomodating coil data and/or a terminal designation in the form of an inprint, an adhesive plate, a stamped portion or the like.
11. Switchgear as claimed in one of claims 1 to 10, characterized in that in the lateral wall - of the shaped cover part (24) -facing in the direction of the housing exterior of the housing (38,42) of the switchgear in the assembled position, a recess (34) is provided for introducing and guiding connection lines for the inductive coil.
12. Switchgear as claimed in one of claims 1 to 11, characterized in that the insulating material, from which the shaped cover part (24; 43) is formed, is mixed with a dye.
EP81102113A 1980-04-16 1981-03-20 Device for a connecting terminal for the end of the winding of an inductive coil arranged in an electromagnetic switchgear Expired EP0037921B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81102113T ATE7181T1 (en) 1980-04-16 1981-03-20 CONNECTION TERMINAL DEVICE FOR THE WINDING END OF AN INDUCTIVE COIL TO BE PLACED IN AN ELECTROMAGNETIC SWITCHING DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3014495 1980-04-16
DE19803014495 DE3014495A1 (en) 1980-04-16 1980-04-16 CONNECTING TERMINAL DEVICE FOR THE WINDING END OF AN INDUCTIVE COIL TO BE ARRANGED IN AN ELECTROMAGNETIC SWITCHGEAR

Publications (2)

Publication Number Publication Date
EP0037921A1 EP0037921A1 (en) 1981-10-21
EP0037921B1 true EP0037921B1 (en) 1984-04-18

Family

ID=6100104

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81102113A Expired EP0037921B1 (en) 1980-04-16 1981-03-20 Device for a connecting terminal for the end of the winding of an inductive coil arranged in an electromagnetic switchgear

Country Status (3)

Country Link
EP (1) EP0037921B1 (en)
AT (1) ATE7181T1 (en)
DE (1) DE3014495A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2521789A1 (en) * 1982-02-12 1983-08-19 Telemecanique Electrique ELECTRICAL CONNECTION DEVICE WITH DIRECT ACCESS PROTECTED TERMINALS
FR2579016B1 (en) * 1985-03-18 1988-09-09 Telemecanique Electrique ELECTROMAGNETICALLY CONTROLLED SWITCH

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1690732C2 (en) * 1951-01-28 1974-04-25 Siemens Ag, 1000 Berlin U. 8000 Muenchen Arrangement for fastening fixed contact carriers
US3205470A (en) * 1961-11-02 1965-09-07 Robertshaw Controls Co Electrical terminal and the like
DE6602570U (en) * 1967-02-17 1969-08-28 Ben Buchele Elektromotorenwerk TERMINAL BOARD FOR EXPLOSION PROTECTED ELECTRIC MOTORS
DE6903066U (en) * 1969-01-28 1969-07-03 Siemens Ag ROW TERMINAL
DE7404983U (en) * 1974-02-13 1975-08-14 Siemens Ag Switch block, in particular auxiliary switch block for electromagnetic switching devices
DE7419680U (en) * 1974-06-07 1975-03-20 Adels T Elektro U Waermetechnik Transformer terminal or line-up terminal
CH592967A5 (en) * 1976-02-25 1977-11-15 Sprecher & Schuh Ag
DE2732963C2 (en) * 1977-07-21 1982-10-21 Starkstrom Gummersbach GmbH, 5277 Marienheide Contactor

Also Published As

Publication number Publication date
DE3014495A1 (en) 1981-10-22
ATE7181T1 (en) 1984-05-15
EP0037921A1 (en) 1981-10-21
DE3014495C2 (en) 1987-11-12

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