EP0596356A1 - Switching device - Google Patents

Switching device Download PDF

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Publication number
EP0596356A1
EP0596356A1 EP93117232A EP93117232A EP0596356A1 EP 0596356 A1 EP0596356 A1 EP 0596356A1 EP 93117232 A EP93117232 A EP 93117232A EP 93117232 A EP93117232 A EP 93117232A EP 0596356 A1 EP0596356 A1 EP 0596356A1
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EP
European Patent Office
Prior art keywords
conductor
switching device
holding device
contact
switching
Prior art date
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Granted
Application number
EP93117232A
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German (de)
French (fr)
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EP0596356B1 (en
Inventor
Heinz Jacobus
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.)
BSO Steuerungstechnik GmbH
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BSO Steuerungstechnik GmbH
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Publication of EP0596356A1 publication Critical patent/EP0596356A1/en
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Publication of EP0596356B1 publication Critical patent/EP0596356B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/04—Arrangements of electric connections to coils, e.g. leads

Definitions

  • the invention relates to a switching device, in particular for actuating valves, with a coil body, in which a switching part is guided and which is provided with a winding of a conductor, the ends of which are connected to a holding device which is used to produce an electrically conductive connection with contact parts of a Device connector between the ends and the winding leads the conductor.
  • the switching part is essentially formed from a tubular bolt which, when the coil is electrically excited, travels a predeterminable distance via the connected device plug and thereby triggers a switching operation, for example in the case of a valve for shutting off and guiding fluid flows.
  • the holding device has two contact tabs made of easily weldable and electrically conductive material. At the two opposite ends of the contact lugs there are peg-like projections, which are wrapped by the respective end of the conductor for connecting the latter to the holding device.
  • the two contact tabs on their sides facing away from the contact parts of the device plug each have a tab that can be attached to them, into which the conductor is inserted and then fixed by welding the two tabs to the contact tabs assigned to them.
  • the contact parts with the contact lugs are also electrically conductively connected to one another via a welding process, so that an electrically conductive connection between the conductor of the coil former and the contact parts of the device connector is subsequently made is made via the two contact flags.
  • the thin coating of the conductor in the form of the insulation is removed and an electrically conductive connection is made at this point.
  • This known switching device is complicated and expensive to manufacture due to the variety of parts. Furthermore, the known switching device is large because the contact lugs have a corresponding protrusion from the actual coil body.
  • the object of the invention is to create a switching device that is as small as possible, with a small number of parts, which can be manufactured cheaply, with a minimal reject rate.
  • This object is achieved by a switching device with the features of claim 1.
  • the holding device consisting of an insulating material guides the conductor such that it is freely accessible at least from one side for a direct winding-free system with the contact parts, there is a direct connection between the conductor and the two contact parts of the device plug without additional projecting tabs.
  • a welding process is carried out between the conductor and the contact parts, in which the insulating material of the conductor is melted off.
  • the production is also simplified, so that the switching device according to the invention can be manufactured more economically with a lower reject rate. With the elimination of the contact lugs, which therefore no longer need to be bent over, together with the tabs, smaller switching magnets can be built with the same properties, which is particularly important when used in valves, where there are often tight installation conditions.
  • the switching device has a coil body 10 made of plastic material.
  • the coil former 10 is provided with a winding 12 of a conductor 14, which is shown only schematically in FIG.
  • a switching part (not shown) is guided in the form of a so-called pole tube in the coil former 10. When the switching device is actuated, the switching part can be used to control valves and thus determine their switching position.
  • the bobbin 10 is almost flush with a substantially cylindrical housing part 16 made of metallic material.
  • a holding device 18 is also formed from plastic material on one side of the coil former 10.
  • the holding device 18 passes through an end recess 20 in the housing part 16 and is laterally in contact with the latter via a central piece 24, as is shown in particular in FIG.
  • a flat plate 26 is arranged upwards on the middle piece 24 and forms a T-shaped base body of the holding device 18 with the middle piece 24.
  • the lateral protrusions 28 lie in the transition area with the center piece 24 on the outer circumference of the housing part 16 and thus form a twist protection for the coil former 10 relative to the housing part 16.
  • the holding device 18 has two peg-like extensions 30 arranged on the end of the base plate 26, around which the ends 32 of the conductor 14 are wound in order to ensure a firm connection of the conductor 12 to the holding device 18.
  • two pairs of webs 34 are provided on the top of the plate 26 in the outer area, each of which has a receptacle 36 with a V-shaped cross section (see FIG. 1), in which the conductor 14 can be inserted.
  • a guide bevel 38 is provided in the center between the two webs 34 of the holding device 18 which are arranged directly opposite one another and by means of which the conductor 14 is guided in the area in question crossing and without touching one another (see FIG. 2, 3). .
  • the turn package 12 is created and the conductor 14 is led out of the coil body 10 in such a way that it crosses the inlet slot 40 and the guide bevel 38 into the receptacles 36 of the pair of webs 34 shown on the left in FIG. Then it is wrapped around the still free pin 30 and any excess ends of the conductor 14 are cut off.
  • the conductor 14 is now guided by means of the holding device 18 over a predeterminable distance between the respective pairs of webs 34 in such a way that it is freely accessible from all sides for direct contact with two contact parts 44 of a device plug 46, since it is accessible from the webs 34 kept free and taut and is at a distance from all fixed parts of the switching device between the respective receptacles 36 of a pair of webs 34.
  • the device plug 46 has on its lower end facing the housing part 16 a peg-like projection 48 which engages in a bore 50 of the housing part 16 for establishing a connection.
  • a latching part 52 can be provided on the housing part 16 for fixing the device plug 46, which engages under the holding device 18 along the recess 20, which at this point (see FIG. 1) has an axial projection 54 provided for this purpose.
  • the housing of the device plug 46 and the latching part 52 are preferably formed from a plastic material and, in view of this, a snap connection between the latching part 52 and the holding device 18 is possible.
  • the respective contact part 44 of the device plug 16 has a roof-like connecting piece 56, which can be placed on the conductor piece between the two web pairs 34 from above.
  • the two free leg pieces 58 of each connecting piece 56 which comprise the conductor 14 within the holding device 18, can be pressed together via the device and then welded to one another, the thin-walled plastic insulation of the conductor 14 being melted off, so that a conductive connection between the respective contact part 44 and the associated conductor piece of the conductor 14 is present.
  • the roof-like connecting pieces 56 are connected to the outside with a flat contact track 60, on which is arranged perpendicular to it and connected to it there is a connector lug 62 which extends over the top of the switching device, as shown in particular in FIGS.
  • a further contact track 64 is provided, which makes the ground connection forms and which projects with its one free end 66 as well as the connector lugs 62 upwards and is welded with its other free end 68 to the outer circumference of the housing part 16 (see FIG. 1).
  • All contact tracks 60 and 64 can be cut out or punched out of a flat board body and are then cast around with the plastic material of the connector 46.
  • a socket 70 with an internal thread can be inserted in the device plug 46 at the location of the pin-like projection 48, which ensures that the entire device is later attached to fixed parts and / or that the connector lugs 62 and 66 can be securely connected.
  • the guide bevel 38 can also have a guide channel 72, the conductor 14 being placed in the channel interior, so that at the intersection 74 at which the other conductor end is laid over the conductor 14 guided in the channel, there can be no short circuit.
  • the holding device 18, whose pairs of webs 34 form guide forks for the conductor 14, can be designed with a small overall height, so that, provided that the contact parts 44 cover the conductor 14 from above or from the side of the connector 46 on one side thereof create smaller dimensions for the switching device can be reached than was the case with the previously known.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Electromagnets (AREA)

Abstract

2. The invention relates to a switching device, in particular for actuating valves, with a bobbin 10, in which a switching part is guided and which is provided with a winding 12 of a conductor 14 whose ends 32 are connected to a holding device 18 which, for the purpose of making an electrically conducting connection with contact parts 44 of an appliance inlet (connector socket) 46, guides the conductor 14 between the ends 32 and the winding 12. The holding device 18 consisting of an insulating material guides the conductor 14 via a predeterminable path in such a manner that the conductor 14 is freely accessible from at least one side for the purpose of directly bearing against the contact parts 44 without any windings. The switching device according to the invention is of small design and can be produced, compared to the known solutions, in a cost-advantageous manner with a minimum rate of rejects and a low number of parts. <IMAGE>

Description

Die Erfindung betrifft eine Schaltvorrichtung, insbesondere zum Betätigen von Ventilen, mit einem Spulenkörper, in dem ein Schaltteil geführt ist und der mit einer Wicklung eines Leiters versehen ist, dessen Enden mit einer Haltevorrichtung verbunden sind, die zum Herstellen einer elektrisch leitenden Verbindung mit Kontaktteilen eines Gerätesteckers zwischen den Enden und der Wicklung den Leiter führt.The invention relates to a switching device, in particular for actuating valves, with a coil body, in which a switching part is guided and which is provided with a winding of a conductor, the ends of which are connected to a holding device which is used to produce an electrically conductive connection with contact parts of a Device connector between the ends and the winding leads the conductor.

Dahingehende Schaltvorrichtungen, die man auch als Schaltmagnete bezeichnet, sind bekannt und auf dem Markt frei erhältlich. Das Schaltteil ist im wesentlichen aus einem rohrförmigen Bolzen gebildet, der bei elektrischer Erregung der Spule über den angeschlossenen Gerätestecker eine vorgebbare Wegstrecke zurücklegt und hierbei einen Schaltvorgang auslöst, beispielsweise bei einem Ventil zum Absperren und Führen von Fluidströmen. Die Haltevorrichtung weist zwei Kontaktfahnen aus gut schweißbarem und elektrisch leitfähigem Material auf. An den beiden einander abgewandten Enden der Kontaktfahnen sind zapfenartige Vorsprünge vorhanden, die von dem jeweiligen Ende des Leiters zum Verbinden desselben mit der Haltevorrichtung umwickelt sind. Ferner weisen die beiden Kontaktfahnen auf ihren den Kontaktteilen des Gerätesteckers abgewandten Seiten jeweils eine an sie anlegbare Lasche auf, in die der Leiter hineingelegt und anschließend fixiert wird, indem die beiden Laschen mit den ihnen zugeordneten Kontaktfahnen verschweißt werden. Nachdem die beiden winkelförmigen Kontaktteile des Gerätestekkers in Anlage gebracht sind mit den beiden Kontaktfahnen der Haltevorrichtung, werden die Kontaktteile mit den Kontaktfahnen ebenfalls über einen Schweißvorgang elektrisch leitend miteinander verbunden, so daß anschließend eine elektrisch leitende Verbindung zwischen dem Leiter des Spulenkörpers und den Kontaktteilen des Gerätestekkers über die beiden Kontaktfahnen hergestellt ist. Beim Schweißvorgang der angesprochenen Laschen wird der dünne Überzug des Leiters in Form der Isolierung beseitigt und eine elektrisch leitende Verbindung an dieser Stelle hergestellt.Such switching devices, which are also called switching magnets, are known and freely available on the market. The switching part is essentially formed from a tubular bolt which, when the coil is electrically excited, travels a predeterminable distance via the connected device plug and thereby triggers a switching operation, for example in the case of a valve for shutting off and guiding fluid flows. The holding device has two contact tabs made of easily weldable and electrically conductive material. At the two opposite ends of the contact lugs there are peg-like projections, which are wrapped by the respective end of the conductor for connecting the latter to the holding device. Furthermore, the two contact tabs on their sides facing away from the contact parts of the device plug each have a tab that can be attached to them, into which the conductor is inserted and then fixed by welding the two tabs to the contact tabs assigned to them. After the two angular contact parts of the connector are brought into contact with the two contact lugs of the holding device, the contact parts with the contact lugs are also electrically conductively connected to one another via a welding process, so that an electrically conductive connection between the conductor of the coil former and the contact parts of the device connector is subsequently made is made via the two contact flags. During the welding process of the tabs mentioned, the thin coating of the conductor in the form of the insulation is removed and an electrically conductive connection is made at this point.

Diese bekannte Schaltvorrichtung ist aufgrund der Teilevielfalt kompliziert und teuer in der Herstellung. Ferner baut die bekannte Schaltvorrichtung groß auf, weil die Kontaktfahnen einen entsprechenden Überstand gegenüber dem eigentlichen Spulenkörper aufweisen.This known switching device is complicated and expensive to manufacture due to the variety of parts. Furthermore, the known switching device is large because the contact lugs have a corresponding protrusion from the actual coil body.

Durch die gattungsgemäße Vorrichtung nach der DE-PS 1 564 607 ist es bekannt, die elektrisch leitende Haltevorrichtung mit ihren beiden Kontaktfahnen zwischen den beiden Stegen eines endseitig an der Vorrichtung angeordneten Kunststoff-Stirnflansches festzulegen. Die zunächst stirnseitig an der bekannten Schaltvorrichtung vorstehenden beiden Kontaktfahnen werden mit dem jeweiligen Spulenende umwickelt und anschließend mit diesem verlötet. Um die Kontaktfahnen platzsparend unter einem Gehäusedeckel der Schaltvorrichtung unterbringen zu können und um die Spulenwicklungsenden vollständig von Zugspannungen zu entlasten, werden die Kontaktfahnen in Richtung auf die Haltevorrichtung zu umgebogen. Dieses nachträgliche Umbiegen des Lötanschlusses bedeutet im Hinblick auf die großen Stückzahlen, in denen solche Schaltvorrichtungen gefertigt werden, einen erheblichen Aufwand. Außerdem kann beim Umbiegen die Kontaktfahne abbrechen, was die Ausschußrate bei dieser bekannten Vorrichtung erhöht.Due to the generic device according to DE-PS 1 564 607, it is known to fix the electrically conductive holding device with its two contact tabs between the two webs of a plastic end flange arranged at the end of the device. The two contact lugs protruding from the front of the known switching device are wrapped with the respective coil end and then soldered to it. In order to be able to accommodate the contact tabs in a space-saving manner under a housing cover of the switching device and to relieve the coil winding ends completely of tensile stresses, the contact tabs are bent in the direction of the holding device. This subsequent bending of the solder connection means a considerable effort in view of the large numbers in which such switching devices are manufactured. In addition, the contact tab can break when bending, which increases the reject rate in this known device.

Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, eine möglichst klein aufbauende Schaltvorrichtung zu schaffen, mit geringer Teileanzahl, die sich günstig herstellen läßt, mit minimaler Ausschußrate. Diese Aufgabe löst eine Schaltvorrichtung mit den Merkmalen des Anspruches 1.On the basis of this prior art, the object of the invention is to create a switching device that is as small as possible, with a small number of parts, which can be manufactured cheaply, with a minimal reject rate. This object is achieved by a switching device with the features of claim 1.

Dadurch, daß gemäß dem kennzeichnenden Teil des Hauptanspruches über eine vorgebbare Wegstrecke die aus einem Isoliermaterial bestehende Haltevorrichtung den Leiter derart führt, daß er für eine unmittelbare wicklungsfreie Anlage mit den Kontaktteilen zumindest von einer Seite aus frei zugänglich ist, ist eine direkte Verbindung zwischen dem Leiter und den beiden Kontaktteilen des Gerätesteckers ohne zusätzliche vorstehende Kontaktfahnen möglich. Zum Herstellen einer einwandfreien elektrischen Verbindung wird zwischen dem Leiter und den Kontaktteilen ein Schweißvorgang durchgeführt, bei dem das Isoliermaterial des Leiters abgeschmolzen wird. Neben dem Wegfall der Kontaktfahnen und zweier Verbindungsstellen in Form der Laschen ist auch die Herstellung vereinfacht, so daß die erfindungsgemäße Schaltvorrichtung mit geringerer Ausschußrate kostengünstiger herstellbar ist. Mit dem Wegfall der Kontaktfahnen, die mithin auch nicht mehr umgebogen zu werden brauchen, samt den Laschen lassen sich bei gleichen Eigenschaften kleinere Schaltmagnete bauen, was insbesondere beim Einsatz bei Ventilen eine Rolle spielt, wo häufig eng bemessene Einbauverhältnisse gegeben sind.Characterized in that according to the characterizing part of the main claim over a predeterminable distance, the holding device consisting of an insulating material guides the conductor such that it is freely accessible at least from one side for a direct winding-free system with the contact parts, there is a direct connection between the conductor and the two contact parts of the device plug without additional projecting tabs. In order to establish a perfect electrical connection, a welding process is carried out between the conductor and the contact parts, in which the insulating material of the conductor is melted off. In addition to the elimination of the contact lugs and two connecting points in the form of the tabs, the production is also simplified, so that the switching device according to the invention can be manufactured more economically with a lower reject rate. With the elimination of the contact lugs, which therefore no longer need to be bent over, together with the tabs, smaller switching magnets can be built with the same properties, which is particularly important when used in valves, where there are often tight installation conditions.

Vorteilhafte Ausgestaltungen der erfindungsgemäßen Schaltvorrichtung sind Gegenstand der Unteransprüche.Advantageous embodiments of the switching device according to the invention are the subject of the dependent claims.

Die erfindungsgemäße Schaltvorrichtung wird nun im folgenden anhand der Zeichnung näher erläutert.The switching device according to the invention is now explained in more detail below with reference to the drawing.

Es zeigen:

  • Fig.1 einen Längsschnitt durch die obere Hälfte der Schaltvorrichtung;
  • Fig.2 eine Stirnansicht der Schaltvorrichtung gemäß Fig.1;
  • Fig.3 eine Draufsicht auf Teile der Haltevorrichtung und des Gerätesteckers.
Show it:
  • 1 shows a longitudinal section through the upper half of the switching device;
  • 2 shows an end view of the switching device according to FIG. 1;
  • 3 shows a plan view of parts of the holding device and the device plug.

Die erfindungsgemäße Schaltvorrichtung weist einen Spulenkörper 10 auf aus Kunststoffmaterial. Der Spulenkörper 10 ist mit einer Wicklung 12 eines Leiters 14 versehen, die in der Fig.1 nur schematisch wiedergegeben ist. In dem Spulenkörper 10 ist ein Schaltteil (nicht dargestellt) geführt in Form eines sog. Polrohres. Mit dem Schaltteil lassen sich bei Betätigung der Schaltvorrichtung Ventile ansteuern und damit deren Schaltstellung bestimmen.The switching device according to the invention has a coil body 10 made of plastic material. The coil former 10 is provided with a winding 12 of a conductor 14, which is shown only schematically in FIG. A switching part (not shown) is guided in the form of a so-called pole tube in the coil former 10. When the switching device is actuated, the switching part can be used to control valves and thus determine their switching position.

Der Spulenkörper 10 schließt nahezu bündig mit einem im wesentlichen zylindrisch ausgebildeten Gehäuseteil 16 aus metallischen Werkstoff ab. Stirnseitig ist auf einer Seite des Spulenkörpers 10 eine Haltevorrichtung 18 ebenfalls aus Kunststoffmaterial angeformt. Die Haltevorrichtung 18 durchgreift eine stirnseitige Ausnehmung 20 im Gehäuseteil 16 und ist mit diesem über ein Mittelstück 24 seitlich in Anlage, wie dies insbesondere die Fig.2 zeigt. Wie die Fig.2 ferner zeigt, ist nach oben hin auf dem Mittelstück 24 eine eben verlaufende Platte 26 angeordnet, die mit dem Mittelstück 24 einen T-förmigen Grundkörper der Haltevorrichtung 18 ausbildet. Die seitlichen Überstände 28 liegen im Übergangsbereich mit dem Mittelstück 24 auf dem Außenumfang des Gehäuseteiles 16 auf und bilden somit einen Verdrehschutz für den Spulenkörper 10 gegenüber dem Gehäuseteil 16 aus.The bobbin 10 is almost flush with a substantially cylindrical housing part 16 made of metallic material. On the face side, a holding device 18 is also formed from plastic material on one side of the coil former 10. The holding device 18 passes through an end recess 20 in the housing part 16 and is laterally in contact with the latter via a central piece 24, as is shown in particular in FIG. As FIG. 2 also shows, a flat plate 26 is arranged upwards on the middle piece 24 and forms a T-shaped base body of the holding device 18 with the middle piece 24. The lateral protrusions 28 lie in the transition area with the center piece 24 on the outer circumference of the housing part 16 and thus form a twist protection for the coil former 10 relative to the housing part 16.

Die Haltevorrichtung 18 weist endseitig an der Grundplatte 26 angeordnet zwei zapfenartige Verlängerungen 30 auf, um die herum die Enden 32 des Leiters 14 gewickelt sind, um eine feste Verbindung des Leiters 12 mit der Haltevorrichtung 18 zu gewährleisten. Zur Gewährleistung einer weiteren Führung des Leiters mittels der Haltevorrichtung 18 sind auf der Oberseite der Platte 26 im jeweils äußeren Bereich zwei Paare an Stegen 34 vorgesehen, die jeweils über eine Aufnahme 36 verfügen mit einem V-förmigen Querschnitt (s.Fig.1), in die der Leiter 14 einlegbar ist. Mittig zwischen den zwei unmittelbar benachbart gegenüberliegend angeordneten Stegen 34 der Haltevorrichtung 18 ist eine Führungsschräge 38 vorgesehen, mittels der der Leiter 14 im angesprochenen Bereich sich kreuzend, und ohne sich an dieser Stelle zu berühren, geführt ist (s.Fig.2,3). Zum Herstellen der Wicklung mittels einer entsprechenden Vorrichtung (nicht dargestellt) wird zunächst das in Blickrichtung auf Fig.2 gesehen rechte Ende 32 des Leiters 14 auf die zugeordnete Verlängerung 30 gewickelt und anschließend der Leiter 14 in die Aufnahmen 36, gebildet aus dem rechten Paar an Stegen 34, eingelegt. Dann läuft der Leiter 14 dem Betrachter der Fig.2 zugewandt vor der Führungsschräge 38 und über einen Einlaufschlitz 40 (Fig.3), der auf der Rückseite der vorderen Stirnwand des Spulenkörpers 10 angeordnet ist, auf den Boden 42 des Spulenkörpers 10. Nach der vorgegebenen Windungszahl, z.B. 1700 Windungen, ist das Windungspaket 12 erstellt und der Leiter 14 wird aus dem Spulenkörper 10 derart herausgeführt, daß er den Einlaufschlitz 40 und die Führungsschräge 38 überkreuzend in die Aufnahmen 36 des in der Fig.2 links dargestellten Paares an Stegen 34 gelangt. Anschließend wird er um den noch freien Zapfen 30 gewickelt und die etwaig vorhandenen endseitigen Überstände des Leiters 14 werden abgeschnitten. Der Leiter 14 ist nun mittels der Haltevorrichtung 18 über eine vorgebbare Wegstrecke zwischen den jeweiligen Paaren an Stegen 34 derart geführt, daß er für eine unmittelbare Anlage mit zwei Kontaktteilen 44 eines Gerätesteckers 46 von allen Seiten aus frei zugänglich ist, denn er ist von den Stegen 34 frei-und straffgehalten und weist zu allen feststehenden Teilen der Schaltvorrichtung zwischen den jeweiligen Aufnahmen 36 eines Paares an Stegen 34 einen Abstand auf.The holding device 18 has two peg-like extensions 30 arranged on the end of the base plate 26, around which the ends 32 of the conductor 14 are wound in order to ensure a firm connection of the conductor 12 to the holding device 18. To ensure a further guidance of the conductor by means of the holding device 18, two pairs of webs 34 are provided on the top of the plate 26 in the outer area, each of which has a receptacle 36 with a V-shaped cross section (see FIG. 1), in which the conductor 14 can be inserted. A guide bevel 38 is provided in the center between the two webs 34 of the holding device 18 which are arranged directly opposite one another and by means of which the conductor 14 is guided in the area in question crossing and without touching one another (see FIG. 2, 3). . To produce the winding by means of a corresponding device (not shown), first the right end 32 of the conductor 14, as seen in the direction of view in FIG. 2, is wound onto the associated extension 30 and then the conductor 14 into the receptacles 36, formed from the right pair Web 34, inserted. Then the conductor 14 runs towards the viewer of FIG. 2 in front of the guide bevel 38 and via an inlet slot 40 (FIG. 3), which is arranged on the back of the front end wall of the coil former 10, on the bottom 42 of the coil former 10. According to the predetermined number of turns, e.g. 1700 turns, the turn package 12 is created and the conductor 14 is led out of the coil body 10 in such a way that it crosses the inlet slot 40 and the guide bevel 38 into the receptacles 36 of the pair of webs 34 shown on the left in FIG. Then it is wrapped around the still free pin 30 and any excess ends of the conductor 14 are cut off. The conductor 14 is now guided by means of the holding device 18 over a predeterminable distance between the respective pairs of webs 34 in such a way that it is freely accessible from all sides for direct contact with two contact parts 44 of a device plug 46, since it is accessible from the webs 34 kept free and taut and is at a distance from all fixed parts of the switching device between the respective receptacles 36 of a pair of webs 34.

Der Gerätestecker 46 weist auf seinem dem Gehäuseteil 16 zugekehrten unteren Ende einen zapfenartigen Vorsprung 48 auf, der in eine Bohrung 50 des Gehäuseteiles 16 zum Herstellen einer Verbindung eingreift. Zusätzlich oder alternativ hierzu kann zum Festlegen des Gerätesteckers 46 auf dem Gehäuseteil 16 ein Rastteil 52 vorgesehen sein, das die Haltevorrichtung 18 längs der Ausnehmung 20 untergreift, die an dieser Stelle (s.Fig.1) einen hierfür vorgesehenen axialen Überstand 54 aufweist. Das Gehäuse des Gerätestekkers 46 sowie das Rastteil 52 sind vorzugsweise aus einem Kunststoffmaterial gebildet und im Hinblick hierauf ist eine Schnappverbindung zwischen dem Rastteil 52 und der Haltevorrichtung 18 möglich.The device plug 46 has on its lower end facing the housing part 16 a peg-like projection 48 which engages in a bore 50 of the housing part 16 for establishing a connection. In addition or as an alternative to this, a latching part 52 can be provided on the housing part 16 for fixing the device plug 46, which engages under the holding device 18 along the recess 20, which at this point (see FIG. 1) has an axial projection 54 provided for this purpose. The housing of the device plug 46 and the latching part 52 are preferably formed from a plastic material and, in view of this, a snap connection between the latching part 52 and the holding device 18 is possible.

Das jeweilige Kontaktteil 44 des Gerätesteckers 16 weist ein dachartiges Verbindungsstück 56 auf, das von oben her auf das Leiterstück zwischen den beiden Stegpaaren 34 aufsetzbar ist. Die beiden freien Schenkelstücke 58 eines jeden Verbindungsstückes 56, die den Leiter 14 innerhalb der Haltevorrichtung 18 umfassen, lassen sich über die Vorrichtung zusammendrücken und anschließend miteinander verschweißen, wobei die dünnwandige Kunststoffisolierung des Leiters 14 abgeschmolzen wird, so daß eine leitende Verbindung zwischen dem jeweiligen Kontaktteil 44 und dem zugeordneten Leiterstück des Leiters 14 vorhanden ist. Die dachartigen Verbindungsstücke 56 sind jeweils nach außen hin versetzt mit einer ebenen Kontaktbahn 60 verbunden, auf der senkrecht zu ihr angeordnet und mit ihr verbunden eine Steckerfahne 62 vorhanden ist, die über die Oberseite der Schaltvorrichtung, wie dies insbesondere die Fig.1 und 2 zeigen, hinaussteht. Neben den bereits angesprochenen Kontaktbahnen 60 ist eine weitere Kontaktbahn 64 vorgesehen, die den Masseanschluß ausbildet und die mit ihrem einen freien Ende 66 ebenso wie die Steckerfahnen 62 nach oben absteht und mit ihrem anderen freien Ende 68 mit dem Außenumfang des Gehäuseteiles 16 verschweißt wird (s.Fig.1).The respective contact part 44 of the device plug 16 has a roof-like connecting piece 56, which can be placed on the conductor piece between the two web pairs 34 from above. The two free leg pieces 58 of each connecting piece 56, which comprise the conductor 14 within the holding device 18, can be pressed together via the device and then welded to one another, the thin-walled plastic insulation of the conductor 14 being melted off, so that a conductive connection between the respective contact part 44 and the associated conductor piece of the conductor 14 is present. The roof-like connecting pieces 56 are connected to the outside with a flat contact track 60, on which is arranged perpendicular to it and connected to it there is a connector lug 62 which extends over the top of the switching device, as shown in particular in FIGS. 1 and 2 , stands out. In addition to the contact tracks 60 already mentioned, a further contact track 64 is provided, which makes the ground connection forms and which projects with its one free end 66 as well as the connector lugs 62 upwards and is welded with its other free end 68 to the outer circumference of the housing part 16 (see FIG. 1).

Alle Kontaktbahnen 60 und 64 lassen sich aus einem ebenen Platinenkörper ausschneiden oder ausstanzen und werden anschließend mit dem Kunststoffmaterial des Gerätesteckers 46 umgossen. In dem Gerätestecker 46 kann an der Stelle des zapfenartigen Vorsprunges 48 eine Buchse 70 mit Innengewinde eingelassen sein, die ein späteres Befestigen der gesamten Vorrichtung an feststehenden Teilen und/oder eine sichere Anschlußmöglichkeit der Steckerfahnen 62 und 66 gewährleistet.All contact tracks 60 and 64 can be cut out or punched out of a flat board body and are then cast around with the plastic material of the connector 46. A socket 70 with an internal thread can be inserted in the device plug 46 at the location of the pin-like projection 48, which ensures that the entire device is later attached to fixed parts and / or that the connector lugs 62 and 66 can be securely connected.

Wie insbesondere die Fig.3 zeigt, bei der der Einfachheit halber das Rastteil 52 nicht dargestellt ist, kann die Führungsschräge 38 auch einen Führungskanal 72 aufweisen, wobei in das Kanalinnere der Leiter 14 gelegt ist, so daß an der Kreuzungsstelle 74, bei dem das andere Leiterende über den in dem Kanal geführten Leiter 14 darübergelegt ist, es zu keinem Kurzschluß kommen kann. Es reicht aber auch aus, den Leiter 14 auf einer der Vorderseiten einer wie auch immer gearteten Führung oder Stütze verlaufen zu lassen, bei der gewährleistet ist, daß durch ihren axialen Überstand gegenüber der Platte 26 die sich kreuzenden Leiterstükke sich nicht berühren können.As shown in FIG. 3 in particular, in which the latching part 52 is not shown for the sake of simplicity, the guide bevel 38 can also have a guide channel 72, the conductor 14 being placed in the channel interior, so that at the intersection 74 at which the other conductor end is laid over the conductor 14 guided in the channel, there can be no short circuit. However, it is also sufficient to let the conductor 14 run on one of the front sides of a guide or support of any kind, in which it is ensured that the crossing conductor pieces cannot touch due to their axial projection over the plate 26.

Zum Schutz der Schaltvorrichtung wird diese anschließend vollständig mit einem Kunststoffmaterial umgossen, so daß nur noch das Schaltteil und die Steckerfahnen 62 und 66 aus der blockartigen umgossenen Schaltvorrichtung herausragen. Die Haltevorrichtung 18, deren paarweise angeordneten Stege 34 Führungsgabeln für den Leiter 14 ausbilden, läßt sich mit einer geringen Bauhöhe ausbilden, so daß, sofern die Kontaktteile 44 den Leiter 14 von oben her überdecken oder von der Seite des Gerätesteckers 46 aus sich an diesen einseitig anlegen, kleinere Abmessungen für die Schaltvorrichtung erreichbar sind, als dies bei den bisher bekannten der Fall war.To protect the switching device, this is then completely encapsulated with a plastic material, so that only the switching part and the connector lugs 62 and 66 protrude from the block-like encapsulated switching device. The holding device 18, whose pairs of webs 34 form guide forks for the conductor 14, can be designed with a small overall height, so that, provided that the contact parts 44 cover the conductor 14 from above or from the side of the connector 46 on one side thereof create smaller dimensions for the switching device can be reached than was the case with the previously known.

Claims (7)

1. Schaltvorrichtung, insbesondere zum Betätigen von Ventilen, mit einem Spulenkörper (10), in dem ein Schaltteil geführt ist und der mit einer Wicklung (12) eines Leiters (14) versehen ist, dessen Enden (32) mit einer Haltevorrichtung (18) verbunden sind, die zum Herstellen einer elektrisch leitenden Verbindung mit Kontaktteilen (44) eines Gerätesteckers (46) zwischen den Enden (32) und der Wicklung (12) den Leiter (14) führt, dadurch gekennzeichnet, daß über eine vorgebbare Wegstrecke die aus einem Isoliermaterial bestehende Haltevorrichtung (18) den Leiter (14) derart führt, daß er für eine unmittelbare wicklungsfreie Anlage mit den Kontaktteilen (44) zumindest von einer Seite aus frei zugänglich ist.1. Switching device, in particular for actuating valves, with a coil body (10) in which a switching part is guided and which is provided with a winding (12) of a conductor (14), the ends (32) of which are provided with a holding device (18) are connected which leads to the establishment of an electrically conductive connection with contact parts (44) of a device plug (46) between the ends (32) and the winding (12) of the conductor (14), characterized in that over a predeterminable distance from a Insulating material existing holding device (18) guides the conductor (14) such that it is freely accessible from at least one side for a direct winding-free contact with the contact parts (44). 2. Schaltvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Haltevorrichtung (18) jedem Kontaktteil (44) zugeordnet zwei Stege (34) aufweist, die jeweils über eine Aufnahme (36) verfügen, in der der Leiter (14) geführt ist.2. Switching device according to claim 1, characterized in that the holding device (18) assigned to each contact part (44) has two webs (34), each having a receptacle (36) in which the conductor (14) is guided. 3. Schaltvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß mittig zwischen zwei Stegen (34) der Haltevorrichtung (18) angeordnet eine Führungsschräge (38) vorgesehen ist, mittels der der Leiter (14) sich kreuzend und ohne sich an dieser Stelle zu berühren geführt ist.3. Switching device according to claim 1 or 2, characterized in that a guide bevel (38) is provided centrally between two webs (34) of the holding device (18), by means of which the conductor (14) intersecting and without itself at this point touch is led. 4. Schaltvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Haltevorrichtung (18) einstückig mit dem Spulenkörper (10) verbunden ist und aus Kunststoffmaterial besteht.4. Switching device according to one of claims 1 to 3, characterized in that the holding device (18) is integrally connected to the coil body (10) and consists of plastic material. 5. Schaltvorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das jeweilige Kontaktteil (44) ein dachartiges Verbindungsstück (56) aufweist, das den zwischen den Stegen (34) geführten Leiter (14) zumindest teilweise umgreift.5. Switching device according to one of claims 1 to 4, characterized in that the respective contact part (44) has a roof-like connecting piece (56) which at least partially surrounds the conductor (14) guided between the webs (34). 6. Schaltvorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Gerätestecker (46) einen Vorsprung (48) und/oder ein Rastteil (52) aufweist, mit dem er in eine Ausnehmung (50) eines Gehäuseteiles (16) eingreift bzw. in die Haltevorrichtung (18) einschnappt, das den Spulenkörper (10) umgibt.6. Switching device according to one of claims 1 to 5, characterized in that the connector (46) has a projection (48) and / or a latching part (52) with which it engages in a recess (50) of a housing part (16) or snaps into the holding device (18) which surrounds the coil former (10). 7. Schaltvorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Gerätestecker (46) einen Masseanschluß (64) aufweist, der mit einem weiteren Kontaktteil (68) unmittelbar mit dem Gehäuseteil (16) verbunden ist.7. Switching device according to one of claims 1 to 6, characterized in that the connector (46) has a ground connection (64) which is connected directly to the housing part (16) with a further contact part (68).
EP93117232A 1992-11-05 1993-10-25 Switching device Expired - Lifetime EP0596356B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4237354A DE4237354A1 (en) 1992-11-05 1992-11-05 Switching device
DE4237354 1992-11-05

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EP0596356A1 true EP0596356A1 (en) 1994-05-11
EP0596356B1 EP0596356B1 (en) 1997-05-14

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DE10216731B3 (en) * 2002-04-16 2004-01-08 Hydac Electronic Gmbh Electromagnetic switching device

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EP0155573A1 (en) * 1984-03-02 1985-09-25 Alcatel SEL Aktiengesellschaft Coil bobbin for electrical apparatuses suited for automation
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DE1564607C (en) * 1972-04-27 Siemens AG, 1000 Berlin u. 8000 München Bobbins made of insulating material for electric coils
GB917200A (en) * 1960-05-17 1963-01-30 Cav Ltd Improved bobbin for a solenoid
EP0155573A1 (en) * 1984-03-02 1985-09-25 Alcatel SEL Aktiengesellschaft Coil bobbin for electrical apparatuses suited for automation
WO1991004411A1 (en) * 1989-09-13 1991-04-04 Robert Bosch Gmbh Ignition coil
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WO2001097236A1 (en) * 2000-06-14 2001-12-20 Robert Bosch Gmbh Two-part solenoid and method for the production thereof
US6927659B2 (en) 2000-06-14 2005-08-09 Robert Bosch Gmbh Two-part solenoid and method for the production thereof
US7132920B2 (en) 2000-06-14 2006-11-07 Robert Bosch Gmbh Two-part solenoid and method for the manufacture thereof

Also Published As

Publication number Publication date
DE4237354A1 (en) 1994-05-11
EP0596356B1 (en) 1997-05-14
ES2101192T3 (en) 1997-07-01
DE59306444D1 (en) 1997-06-19

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