EP0142061A1 - Electromagnetic relay and method for its manufacture - Google Patents

Electromagnetic relay and method for its manufacture Download PDF

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Publication number
EP0142061A1
EP0142061A1 EP84112528A EP84112528A EP0142061A1 EP 0142061 A1 EP0142061 A1 EP 0142061A1 EP 84112528 A EP84112528 A EP 84112528A EP 84112528 A EP84112528 A EP 84112528A EP 0142061 A1 EP0142061 A1 EP 0142061A1
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EP
European Patent Office
Prior art keywords
winding
coil
pin
spacer
bent
Prior art date
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Granted
Application number
EP84112528A
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German (de)
French (fr)
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EP0142061B1 (en
Inventor
Helmut Dipl.-Ing. Schedele
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Siemens AG
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Siemens AG
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Priority to AT84112528T priority Critical patent/ATE33730T1/en
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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
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/10—Connecting leads to windings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H49/00—Apparatus or processes specially adapted to the manufacture of relays or parts thereof
    • 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
    • H01H2050/446—Details of the insulating support of the coil, e.g. spool, bobbin, former

Definitions

  • the invention relates to an electromagnetic relay with a coil body carrying a winding and winding connection elements, at least one of the winding connection elements being fastened to a coil flange, from there bent into the winding area and forming a connecting pin in the winding area.
  • the invention also relates to a method for producing such a relay.
  • connection pins in the winding area can, however, only be brought to their final position after the winding has been applied, since they would in any case disturb and hinder winding.
  • the coil connection part to be bent in is not arranged next to the coil winding, but in the space below the winding, so that there is still room for the attack of the bending tool.
  • the connection element used in the known relay requires several machining operations, since the sheet metal part must be cut and pre-bent before embedding in the coil former and only finally bent into the desired shape after embedding in the coil former and after the coil winding has been applied.
  • the object of the invention is to improve a relay of the type mentioned in such a way that connection elements provided in the coil winding area can be brought into a precisely defined position in the intended grid due to the special design and fastening with a minimum of tools and operations.
  • connection element with a straight, round cross-section and smooth surface fastening section perpendicular to the axial direction of the coil is embedded in the coil flange and forms a spacer by bending by 90 ° and by further bending by 90 ° the connecting pin.
  • connection element By forming the connecting element from a piece of wire that is round and straight, at least in the embedding area, a connecting pin can be obtained in a very simple manner and with two simple bending processes by 90 ° in each case, which pin can be dimensioned exactly at a distance from the embedding axis. It is important that the connection element has a smooth round surface in the embedding area. This makes it possible to bend the connecting element immediately after injecting the 'bobbin and the associated injection of the connecting element into the desired shape outside the coil winding area and after winding the coil by a simple rotary movement around the embedding axis in the space next to or to bring under the winding. It has been shown that a round wire embedded in this way can be rotated as easily as in a bearing.
  • connection element only needs to be bent once, namely between spraying the coil former and applying the winding, in a simple manner, this bending process being able to take place laterally from the coil flange and thereby the dimensions provided with respect to the connection grid being maintained in a simple manner can.
  • connection element The fastening section of the connection element is arranged in a suitable manner parallel to the intended direction of the connection pin.
  • the connection element then has a simply bent shape and needs after winding the coil to be rotated only 90 ° around the embedding axis.
  • other bending configurations are also conceivable, in which the connecting pin is first molded on outside of the winding area and is brought into the winding area by rotating the connecting element about the embedding axis.
  • the end of the connecting element opposite the connecting pin expediently forms a winding pin protruding from the coil flange, which is bent parallel to the spacer. After the coil end has been wound onto this winding pin, it is rotated together with the connecting pin formed on the other end together about the embedding axis and is then also located in the winding area to save space.
  • the coil flange each has a shoulder in the area of the spacer and, if appropriate, the winding pin.
  • the bent connector pin which is brought into the winding area by twisting, or two opposite connector pins of this type can be positioned precisely on the connection side of the relay by means of a frame which is subsequently attached.
  • the connector pin can be fixed in the area of the winding in any case when the relay is later cast with the cast resin which also embeds the spacer and part of the connector pin.
  • the coil body is first formed from insulating material, at least one connecting element in the form of a straight wire with a round cross section being embedded in at least one coil flange, so that the wire end protruding to one side is bent twice by 90 ° that the bent wire sections do not protrude into the winding space and that the spacer formed between the first and the second bend corresponds to the desired distance between the embedding axis and the connecting pin, that the winding is then applied to the coil former and one winding end each with one from the coil flange protruding winding section of a connecting element is connected and that the spacer is then brought to the connecting pin by rotating the connecting element about its embedding axis in the area next to or below the winding.
  • Fig. 1 shows a bobbin 1, which was obtained by injection molding. It has a coil tube 2 and two coil flanges 3 and 4, which are specially designed as carriers for the other functional elements of the relay. However, these are not the subject of the present invention.
  • connecting pins 5 and 6 in the coil flange 4 a connecting pin 7 is embedded in the form of an initially straight piece of wire (shown in broken lines).
  • a spacer 5a and a connecting pin 5b are formed on the connecting elements 5.
  • the length of the spacer 5a corresponds to the later desired distance of the connecting pin 5b from the embedding plane of the connecting element 5.
  • the end of the connecting element 5 or 6 protruding from the top of the coil flange 3 is bent outward in the same direction as the spacer 5a and thus forms one winding pin 5c or 6c.
  • the end of the connecting element 7 protruding upwards can be bent outwards to form a winding pin 7c.
  • One or more coil windings can now be applied to the tube 2, the winding starts or ends being wound onto one of the winding pins 5c, 6c or 7c and optionally soldered on.
  • the connecting element 5 By turning the connecting element 5 about the embedding axis in the direction of the arrows 8 by about 90 ° inwards, the spacer 5a and the connecting pin 5b are brought into the area next to or below the winding; this position is identified by the reference numerals 5a 'and 5b'.
  • the pin 6 is rotated inwards.
  • the winding pin 5c is also turned inwards and takes the position 5c 'there.
  • the rotation about the embedding axis is made possible by the fact that the connecting elements 5 and 6 and 7 each have a round cross section and a smooth surface, so that they can be rotated in the plastic mass of the coil body as in a bearing.
  • paragraphs 9 and 10 are also provided, whereby the embedding length of the connecting elements 5 and 6 is kept relatively short and allows easy twisting.
  • the bent parts, namely the spacer 5a and the winding pin 5c can be arranged within the contours of the coil body in the free space between the rounding of the winding and the respective edge of the later cuboid housing.
  • the connecting pin 7 can also be rotated in a comparable manner, so that the winding pin 7c is also brought into the winding area.
  • FIG. 2 and 3 show a relay using a coil former from FIG. 1.
  • a contact tongue 11 is arranged in the interior of the coil former, which is provided in one piece with a connecting pin 12 at its fastening end. With the free end, the contact tongue 11 interacts with mating contact elements or pole plates 13, which also each have connecting pins 14.
  • a permanent magnet 15 and a yoke 16 complete the magnetic circuit of the relay.
  • the coil connection pins 5b and 6b described with reference to FIG. 1 these come to lie exactly in the middle between the connection spikes 12 and 14. They are therefore exactly in the desired grid and have the required insulation distances from the other parts.
  • the entire relay is embedded in a mold in casting resin 17, as a result of which the connecting elements 5 and 6, in particular their bent sections 5a and 5b or 6a and 6b (not visible), are also fixed in their final position.
  • the coil body 21 is shaped in this case so that the contact spring 22 lies flat in it, while the mating contact plates or pole plates 23 and 24 are arranged one above the other in a corresponding manner.
  • coil connecting elements 25 and 26 are embedded in the coil former 21 and rotated after the coil winding 27 has been applied, so that the spacers 25a and 26a and the connecting pins 25b and 26b formed by angling lie in the winding area .
  • the relay is inserted into a cap 28 and potted in this with casting resin 29.
  • a frame-shaped retaining web 30 is placed over these connecting pins and aligned between the edges of the protective cap 28 in order to align the connecting pins 25b and 26b.
  • the casting resin 29 is poured in, which fixes the connecting pins 25b and 26b, the retaining web 30 and the protective cap 28 to one another and to the coil former after curing.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

1. An electromagnetic relay comprising a coil body (1; 21) whic carries a winding (27) and winding terminals (5, 6; 25, 26), at least one winding terminal has a fixing section (5d) that is retained in one of the coil flanges (3) when the coil body (1; 21) is released, and is bent at an angle in a section (5a, 6a; 25a, 26a) to form a spacer outside of the area in which it is embedded in the winding zone, and is again bent at an angle to form a terminal pin (5b, 6b; 25b, 26b) extending at right angles to the plane of insertion, characterised in that the fixing section (5d) extends in a straight line in a plane at right angles to the coil axis and has a round cross-section and thus an edge-free surface.

Description

Die Erfindung betrifft ein elektromagnetisches Relais mit einem eine Wicklung sowie Wicklungsanschlußelemente tragenden Spulenkörper, wobei mindestens eines der Wicklungsanschlußelemente an einem Spulenflansch befestigt ist, von dort in den Wicklungsbereich gebogen ist und im Wicklungsbereich einen Anschlußstift bildet. Außerdem betrifft die Erfindung ein Verfahren zur Herstellung eines derartigen Relais.The invention relates to an electromagnetic relay with a coil body carrying a winding and winding connection elements, at least one of the winding connection elements being fastened to a coil flange, from there bent into the winding area and forming a connecting pin in the winding area. The invention also relates to a method for producing such a relay.

Bei sehr kleinen Relais kann es zweckmäßig sein, neben den im Bereich der Spulenflansche angeordneten Anschlußstiften für Kontaktelemente und eine oder mehrere Spulenwicklungen zumindest einen Teil der Anschlußstifte im Bereich der Spulenwicklung selbst vorzusehen, um bei der kleinen Grundfläche die notwendigen Abstände und Isolierstrecken zwischen den Anschlußstiften sicherzustellen. Derartige Anschlußstifte im Wicklungsbereich können aber erst nach dem Aufbringen der Wicklung an ihre endgültige Position gebracht werden, da sie in jedem Fall das Wikkeln stören und behindern würden.In the case of very small relays, it may be expedient to provide at least some of the pins in the area of the coil winding in addition to the pins for contact elements and one or more coil windings arranged in the area of the coil flanges, in order to ensure the necessary spacing and insulating distances between the pins in the small base area . Such connection pins in the winding area can, however, only be brought to their final position after the winding has been applied, since they would in any case disturb and hinder winding.

So ist es aus der DE-OS 31 50 125 bereits bekannt, bei einem Relais der eingangs genannten Art vor dem Wickeln des Spulendrahtes einen Spulenanschlußteil derart ausgerichtet am Spulenkörper zu befestigen, daß er sich außerhalb des Spulenwickelbereiches befindet und ihn nach dem Wickeln der Spule in den Spulenwickelbereich zu biegen. Der dort verwendete Spulenanschlußteil besteht jedoch aus einem relativ kompliziert geformten Blechteil, der nach dem Wickeln der Spule und nach dem Anwickeln der Wicklungsenden mit einem speziellen Biegewerkzeug in den Wicklungsbereich gebogen wird. Es ist jedoch verhältnismäßig schwierig, mit Biegewerkzeugen im Wicklungsbereich zu arbeiten, und es ist auch schwierig, die Biegung des Spulenanschlußteiles im Wicklungsbereich so genau herzustellen, daß der angeformte Anschlußstift danach im vorgesehenen Raster liegt. Aus diesem Grunde ist wohl bei dem bekannten Relais der einzubiegende Spulenanschlußteil nicht neben der Spulenwicklung, sondern in dem Raum unterhalb der Wicklung angeordnet, so daß noch Platz für den Angriff des Biegewerkzeuges besteht. Bei sehr kleinen Relais kommt es jedoch darauf an, den zur Verfügung stehenden Raum möglichst gut auszunutzen und beispielsweise Spulenanschlußelemente ohne einen Mehrbedarf an Raum in dem ohnehin freien Volumen zwischen der runden Spulenwicklung und der Seitenkante des quaderförmigen Gehäuses anzuordnen. Überdies erfordert das bei dem bekannten Relais verwendete Anschlußelement mehrere Bearbeitungsvorgänge, da das Blechteil bereits vor dem Einbetten in den Spulenkörper geschnitten und vorgebogen werden muß und nach dem Einbetten in den Spulenkörper und nach dem Aufbringen der Spulenwicklung erst endgültig in die gewünschte Form gebogen wird.So it is already known from DE-OS 31 50 125, in a relay of the type mentioned before the winding of the coil wire to attach a coil connector so aligned on the bobbin that it is outside the coil winding area and it after winding the coil in to bend the coil winding area. However, the coil connector used there consists of a relatively complicated shaped sheet metal part that is bent into the winding area with a special bending tool after winding the coil and after winding the winding ends. However, it is relatively difficult to work with bending tools in the winding area, and it is also difficult to produce the bend of the coil connection part in the winding area so precisely that the integrally formed pin then lies in the intended grid. For this reason, in the known relay, the coil connection part to be bent in is not arranged next to the coil winding, but in the space below the winding, so that there is still room for the attack of the bending tool. In the case of very small relays, however, it is important to utilize the available space as well as possible and, for example, to arrange coil connection elements without an additional requirement for space in the already free volume between the round coil winding and the side edge of the cuboid housing. In addition, the connection element used in the known relay requires several machining operations, since the sheet metal part must be cut and pre-bent before embedding in the coil former and only finally bent into the desired shape after embedding in the coil former and after the coil winding has been applied.

Aufgabe der Erfindung ist es, ein Relais der eingangs genannten Art so zu verbessern, daß im Spulenwickelbereich vorgesehene Anschlußelemente aufgrund spezieller Gestaltung und Befestigung mit einem Mindestaufwand an Werkzeug und Arbeitsgängen in eine genau definierte Lage im vorgesehenen Raster gebracht werden können.The object of the invention is to improve a relay of the type mentioned in such a way that connection elements provided in the coil winding area can be brought into a precisely defined position in the intended grid due to the special design and fastening with a minimum of tools and operations.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß das Anschlußelement mit einem geradlinigen, runden Querschnitt und glatte Oberfläche aufweisenden Befestigungsabschnitt senkrecht zur Axialrichtung der Spule in dem Spulenflansch eingebettet ist und durch Abbiegung um 90° ein Abstandsstück und durch weitere Abbiegung um 90° den Anschlußstift bildet.According to the invention this object is achieved in that the connection element with a straight, round cross-section and smooth surface fastening section perpendicular to the axial direction of the coil is embedded in the coil flange and forms a spacer by bending by 90 ° and by further bending by 90 ° the connecting pin.

Durch die Ausbildung des Anschlußelementes aus einem zumindest im Einbettungsbereich runden und geradlinigen Drahtstück erhält man auf sehr einfache Weise und mit zwei einfachen Biegevorgängen um jeweils 90° einen Anschlußstift, der im Abstand genau zur Einbettungsachse bemessen werden kann. Wichtig ist dabei, daß das Anschlußelement im Einbettungsbereich eine glatte runde Oberfläche besitzt. Dadurch ist es möglich, das Anschlußelement unmittelbar nach dem Spritzen des 'Spulenkörpers und dem damit verbundenen Einspritzen des Anschlußelementes dieses außerhalb des Spulenwicklungsbereiches in die gewünschte Form zu biegen und es nach dem Wickeln der Spule durch eine einfache Drehbewegung um die Einbettungsachse in den Raum neben bzw. unter der Wicklung zu bringen. Es hat sich nämlich gezeigt, daß ein derartig eingebetteter runder Draht ohne weiteres wie in einer Lagerung gedreht werden kann. Auf diese Weise kann man vermeiden, mit Biegewerkzeugen nach dem Wickeln der Spule bzw. unmittelbar im Spulenwicklungsbereich arbeiten zu müssen. Überdies braucht der das Anschlußelement bildende Draht lediglich ein einziges Mal, nämlich zwischen Spritzen des Spulenkörpers und Aufbringen der Wicklung, in einfacher Weise gebogen zu werden, wobei dieser Biegevorgang seitlich vom Spulenflansch stattfinden kann und dadurch in einfacher Weise die vorgesehenen Abmessungen bezüglich des Anschlußrasters eingehalten werden können.By forming the connecting element from a piece of wire that is round and straight, at least in the embedding area, a connecting pin can be obtained in a very simple manner and with two simple bending processes by 90 ° in each case, which pin can be dimensioned exactly at a distance from the embedding axis. It is important that the connection element has a smooth round surface in the embedding area. This makes it possible to bend the connecting element immediately after injecting the 'bobbin and the associated injection of the connecting element into the desired shape outside the coil winding area and after winding the coil by a simple rotary movement around the embedding axis in the space next to or to bring under the winding. It has been shown that a round wire embedded in this way can be rotated as easily as in a bearing. In this way, one can avoid having to work with bending tools after winding the coil or directly in the coil winding area. In addition, the wire forming the connection element only needs to be bent once, namely between spraying the coil former and applying the winding, in a simple manner, this bending process being able to take place laterally from the coil flange and thereby the dimensions provided with respect to the connection grid being maintained in a simple manner can.

Der Befestigungsabschnitt des Anschlußelementes wird in einer zweckmäßigen Weise parallel zur vorgesehenen Richtung des Anschlußstiftes angeordnet. Das Anschlußelement besitzt dann eine einfach abgekröpfte Form und braucht nach dem Wickeln der Spule lediglich um 90° um die Einbettungsachse gedreht zu werden. Es sind jedoch auch andere Biegekonfigurationen denkbar, bei denen der Anschlußstift zunächst außerhalb des Wickelbereiches angeformt und durch Verdrehen des Anschlußelementes um die Einbettungsachse in den Wickelbereich verbracht wird.The fastening section of the connection element is arranged in a suitable manner parallel to the intended direction of the connection pin. The connection element then has a simply bent shape and needs after winding the coil to be rotated only 90 ° around the embedding axis. However, other bending configurations are also conceivable, in which the connecting pin is first molded on outside of the winding area and is brought into the winding area by rotating the connecting element about the embedding axis.

Das dem Anschlußstift entgegengesetzte Ende des Anschlußelementes bildet zweckmäßigerweise einen aus dem Spulenflansch herausragenden Anwickelstift, der parallel zum Abstandsstück gebogen ist. Nach dem Anwickeln des Spulenendes an diesen Anwickelstift wird dieser zusammen mit dem am anderen Ende angeformten Anschlußstift gemeinsam um die Einbettungsachse gedreht und befindet sich dann ebenfalls raumsparend im Wicklungsbereich. In zweckmäßiger Ausgestaltung kann weiterhin vorgesehen werden, daß der Spulenflansch im Bereich des Abstandsstückes und gegebenenfalls des Anwickelstiftes je einen Absatz aufweist. Dadurch wird die Einbettungslänge verkürzt und das nachträgliche Verdrehen des Anschlußelementes erleichtert. Außerdem gelangt in diesem Fall das Abstandsstück mit dem Anschlußstift nahe an die eigentliche Spulenwicklung und in den ohnehin zur Verfügung stehenden freien Raum zwischen Wicklung und Gehäusekante.The end of the connecting element opposite the connecting pin expediently forms a winding pin protruding from the coil flange, which is bent parallel to the spacer. After the coil end has been wound onto this winding pin, it is rotated together with the connecting pin formed on the other end together about the embedding axis and is then also located in the winding area to save space. In an expedient embodiment, it can further be provided that the coil flange each has a shoulder in the area of the spacer and, if appropriate, the winding pin. As a result, the embedding length is shortened and the subsequent twisting of the connection element is facilitated. In addition, in this case the spacer with the connecting pin comes close to the actual coil winding and into the free space between the winding and the housing edge which is available anyway.

Der abgebogene und durch Verdrehen in den Wicklungsbereich gebrachte Anschlußstift oder auch zwei gegenüberliegende derartige Anschlußstifte können durch einen nachträglich aufgesteckten Rahmen auf die Anschlußseite des Relais genau positioniert werden. Eine Fixierung des Anschlußstiftes im Bereich der Wicklung kann in jedem Fall bei einem späteren Vergießen des Relais mit dem eingebrachten Gießharz erfolgen, welches auch das Abstandsstück und einen Teil des Anschlußstiftes einbettet.The bent connector pin, which is brought into the winding area by twisting, or two opposite connector pins of this type can be positioned precisely on the connection side of the relay by means of a frame which is subsequently attached. The connector pin can be fixed in the area of the winding in any case when the relay is later cast with the cast resin which also embeds the spacer and part of the connector pin.

Ein zweckmäßiges Verfahren zur Herstellung des erfindungsgemäßen Relais besteht darin, daß zunächst der Spulenkörper aus Isolierstoff geformt wird, wobei in mindestens einem Spulenflansch je mindestens* ein Anschlußelement in Form eines geraden Drahtes mit rundem Querschnitt eingebettet wird, daß dann das nach einer Seite herausstehende Drahtende zweimal um 90° so gebogen wird, daß die abgebogenen Drahtabschnitte nicht in den Wickelraum ragen und daß das zwischen der ersten und der zweiten Biegung gebildete Abstandsstück dem gewünschten Abstand zwischen der Einbettungsachse und dem Anschlußstift entspricht, daß dann die Wicklung auf den Spulenkörper aufgebracht und je ein Wicklungsende mit einem aus dem Spulenflansch vorstehenden Anwickelabschnitt eines Anschlußelementes verbunden wird und daß dann das Abstandsstück mit dem Anschlußstift durch Drehen des Anschlußelementes um seine Einbettungsachse in den Bereich neben bzw. unterhalb der Wicklung gebracht wird.A convenient method for producing the Invention According to the relay, the coil body is first formed from insulating material, at least one connecting element in the form of a straight wire with a round cross section being embedded in at least one coil flange, so that the wire end protruding to one side is bent twice by 90 ° that the bent wire sections do not protrude into the winding space and that the spacer formed between the first and the second bend corresponds to the desired distance between the embedding axis and the connecting pin, that the winding is then applied to the coil former and one winding end each with one from the coil flange protruding winding section of a connecting element is connected and that the spacer is then brought to the connecting pin by rotating the connecting element about its embedding axis in the area next to or below the winding.

Die Erfindung wird nachfolgend an einem Ausführungsbeispiel anhand der Zeichnung näher erläutert. Es zeig-t

  • Fig. 1 einen Spulenkörper für ein erfindungsgemäß gestaltetes Relais,
  • Fig. 2 und 3 ein Relais mit dem Spulenkörper von Fig. 1 in zwei Schnittansichten,
  • Fig. 4 und 5 ein etwas abgewandelt aufgebautes Relais in ebenfalls zwei Schnittansichten.
The invention is explained in more detail using an exemplary embodiment with reference to the drawing. It shows
  • 1 shows a coil former for a relay designed according to the invention,
  • 2 and 3, a relay with the bobbin of Fig. 1 in two sectional views,
  • 4 and 5 a somewhat modified relay also in two sectional views.

Fig. 1 zeigt einen Spulenkörper 1, der im Spritzgußverfahren gewonnen wurde. Er besitzt ein Spulenrohr 2 und zwei Spulenflansche 3 und 4, die als Träger für die übrigen Funktionseiemente des Relais speziell gestaltet sind. Diese sind jedoch nicht Gegenstand der vorliegenden Erfindung.Fig. 1 shows a bobbin 1, which was obtained by injection molding. It has a coil tube 2 and two coil flanges 3 and 4, which are specially designed as carriers for the other functional elements of the relay. However, these are not the subject of the present invention.

In den Spulenflansch 3 sind Anschlußstifte 5 und 6, in den Spulenflansch 4 ist ein Anschlußstift 7 in Form jeweils eines zunächst geradlinigen Drahtstückes eingebettet (strichpunktiert dargestellt). Die senkrecht zur Grundebene bzw. der späteren Einbauebene des Relais stehenden Anschlußstifte 5 und 6 werden mit ihren an der Unterseite des Spulenflansches 3 austretenden Abschnitten jeweils zunächst um 90° nach außen und dann wiederum um 90° nach unten gebogen. Dadurch wird beispielsweise am Anschlußelemente 5 ein Abstandsstück 5a und ein Anschlußstift 5b gebildet. Die Länge des Abstandsstückes 5a entspricht dem später gewünschten Abstand des Anschlußstiftes 5b von der Einbettungsebene des Anschlußelementes 5. Das an der Oberseite des Spulenflansches 3 herausragende Ende des Anschlußelementes 5 bzw. 6 wird in die gleiche Richtung wie das Abstandsstück 5a nach außen gebogen und bildet damit jeweils einen Anwickelstift 5c bzw. 6c. Auch am entgegengesetzten Spulenflansch 4 kann beispielsweise das nach oben herausstehende Ende des Anschlußelementes 7 nach außen zur Bildung eines Anwickelstiftes 7c gebogen werden.In the coil flange 3 there are connecting pins 5 and 6, in the coil flange 4 a connecting pin 7 is embedded in the form of an initially straight piece of wire (shown in broken lines). The pins 5 and 6, which are perpendicular to the base plane or the later installation plane of the relay, are bent with their sections emerging from the underside of the coil flange 3 first by 90 ° outwards and then again by 90 ° downwards. As a result, for example, a spacer 5a and a connecting pin 5b are formed on the connecting elements 5. The length of the spacer 5a corresponds to the later desired distance of the connecting pin 5b from the embedding plane of the connecting element 5. The end of the connecting element 5 or 6 protruding from the top of the coil flange 3 is bent outward in the same direction as the spacer 5a and thus forms one winding pin 5c or 6c. On the opposite coil flange 4, for example, the end of the connecting element 7 protruding upwards can be bent outwards to form a winding pin 7c.

Nunmehr können eine oder mehrere Spulenwicklungen auf das Rohr 2 aufgebracht werden, wobei die Wicklunganfänge bzw. Enden jeweils an einen der Anwickelstifte 5c, 6c bzw. 7c angewickelt und gegebenenfalls angelötet werden. Durch Drehen des Anschlußelementes 5 um die Einbettungsachse in Richtung der Pfeile 8 um etwa 90° nach innen, wird das Abstandsstück 5a und der Anschlußstift 5b in den Bereich neben bzw. unterhalb der Wicklung gebracht; diese Position wird durch die Bezugszeichen 5a' und 5b' kenntlich gemacht. In entsprechender Weise wird auch der Anschlußstift 6 nach innen gedreht. Mit dem Anschlußstift 5b wird auch der Anwickelstift 5c nach innen gedreht und nimmt dort die Position 5c' ein.One or more coil windings can now be applied to the tube 2, the winding starts or ends being wound onto one of the winding pins 5c, 6c or 7c and optionally soldered on. By turning the connecting element 5 about the embedding axis in the direction of the arrows 8 by about 90 ° inwards, the spacer 5a and the connecting pin 5b are brought into the area next to or below the winding; this position is identified by the reference numerals 5a 'and 5b'. In a corresponding manner, the pin 6 is rotated inwards. With the connecting pin 5b, the winding pin 5c is also turned inwards and takes the position 5c 'there.

Das Verdrehen um die Einbettungsachse wird dadurch ermöglicht, daß die Anschlußelemente 5 und 6 sowie 7 jeweils runden Querschnitt und eine glatte Oberfläche aufweisen, so daß sie in der Kunststoffmasse des Spulenkörpers wie in einer Lagerung verdrehbar sind. An der Oberseite wie auch an der Unterseite des Spulenflansches 3 sind außerdem Absätze 9 bzw. 10 vorgesehen, wodurch die Einbettungslänge der Anschlußelemente 5 und 6 relativ kurz gehalten ist und ein leichtes Verdrehen ermöglicht. Durch diese Absätze 9 und 10 können die abgebogenen Teile, nämlich das Abstandsstück 5a und der Anwickelstift 5c innerhalb der Konturen des Spulenkörpers in den freien Raum zwischen der Rundung der Wicklung und der jeweiligen Kante des späteren quaderförmigen Gehäuses angeordnet werden. Auch der Anschlußstift 7 kann in vergleichbarer Weise gedreht werden, so daß der Anwickelstift 7c ebenfalls in den Wicklungsbereich gebracht wird.The rotation about the embedding axis is made possible by the fact that the connecting elements 5 and 6 and 7 each have a round cross section and a smooth surface, so that they can be rotated in the plastic mass of the coil body as in a bearing. On the top as well as on the bottom of the coil flange 3, paragraphs 9 and 10 are also provided, whereby the embedding length of the connecting elements 5 and 6 is kept relatively short and allows easy twisting. Through these paragraphs 9 and 10, the bent parts, namely the spacer 5a and the winding pin 5c can be arranged within the contours of the coil body in the free space between the rounding of the winding and the respective edge of the later cuboid housing. The connecting pin 7 can also be rotated in a comparable manner, so that the winding pin 7c is also brought into the winding area.

Die Fig. 2 und 3 zeigen ein Relais unter Verwendung eines Spulenkörpers von Fig. 1. Dabei ist im Inneren des Spulenkörpers eine Kontaktzunge 11 angeordnet, welche an ihrem Befestigungsende einstückig mit einem Anschlußstachel 12 versehen ist. Mit dem freien Ende wirkt die Kontaktzunge 11 mit Gegenkontaktelementen bzw. Polblechen 13 zusammen, die ebenfalls jeweils Anschlußstachel 14 aufweisen. Ein Dauermagnet 15 und ein Joch 16 vervollständigen den Magnetkreis des Relais. Durch das anhand von Fig. 1 beschriebene Eindrehen der Spulenanschlußstifte 5b bzw. 6b kommen diese genau in der Mitte zwischen den Anschlußstacheln 12 und 14 zu liegen. Sie sind somit genau im gewünschten Raster und weisen die erforderlichen Isolationsabstände zu den übrigen Teilen auf. Das gesamte Relais wird nach der Montage in einer Form in Gießharz 17 eingebettet, wodurch auch die Anschlußelemente 5 und 6, insbesondere ihre abgebogenen Abschnitte 5a und 5b bzw. 6a und 6b (nicht sichtbar) in ihrer endgültigen Position fixiert werden.2 and 3 show a relay using a coil former from FIG. 1. In this case, a contact tongue 11 is arranged in the interior of the coil former, which is provided in one piece with a connecting pin 12 at its fastening end. With the free end, the contact tongue 11 interacts with mating contact elements or pole plates 13, which also each have connecting pins 14. A permanent magnet 15 and a yoke 16 complete the magnetic circuit of the relay. By screwing in the coil connection pins 5b and 6b described with reference to FIG. 1, these come to lie exactly in the middle between the connection spikes 12 and 14. They are therefore exactly in the desired grid and have the required insulation distances from the other parts. After assembly, the entire relay is embedded in a mold in casting resin 17, as a result of which the connecting elements 5 and 6, in particular their bent sections 5a and 5b or 6a and 6b (not visible), are also fixed in their final position.

Eine abgewandelte Ausführungsform zeigen die Fig. 4 und 5. Der Spulenkörper 21 ist in diesem Fall so geformt, daß die Kontaktfeder 22 flach in ihm liegt, während die Gegenkontaktbleche bzw. Polbleche 23 und 24 in entsprechender Weise übereinander angeordnet sind. In entsprechender Weise wie bei Fig. 1 sind auch hier in den Spulenkörper 21 Spulenanschlußelemente 25 und 26 eingebettet und nach dem Aufbringen der Spulenwicklung 27 verdreht, so daß die Abstandsstücke 25a bzw. 26a und die durch Abwinkeln gebildeten Anschlußstifte 25b bzw. 26b im Wicklungsbereich liegen.4 and 5 show a modified embodiment. The coil body 21 is shaped in this case so that the contact spring 22 lies flat in it, while the mating contact plates or pole plates 23 and 24 are arranged one above the other in a corresponding manner. In a corresponding manner as in FIG. 1, coil connecting elements 25 and 26 are embedded in the coil former 21 and rotated after the coil winding 27 has been applied, so that the spacers 25a and 26a and the connecting pins 25b and 26b formed by angling lie in the winding area .

Das Relais wird in diesem Fall in eine Kappe 28 eingesetzt und in dieser mit Gießharz 29 vergossen. Vorher jedoch wird noch zur Ausrichtung der Anschlußstifte 25b und 26b ein rahmenförmiger Haltesteg 30 über diese Anschlußstifte gesteckt und zwischen den Rändern der Schutzkappe 28 positioniert. Danach wird das Gießharz 29 eingefüllt, welches nach dem Aushärten die Anschlußstifte 25b bzw. 26b, den Haltesteg 30 und die Schutzkappe 28 zueinander und zum Spulenkörper fixiert.In this case, the relay is inserted into a cap 28 and potted in this with casting resin 29. Before that, however, a frame-shaped retaining web 30 is placed over these connecting pins and aligned between the edges of the protective cap 28 in order to align the connecting pins 25b and 26b. Then the casting resin 29 is poured in, which fixes the connecting pins 25b and 26b, the retaining web 30 and the protective cap 28 to one another and to the coil former after curing.

Claims (10)

1. Elektromagnetisches Relais mit einem eine Wicklung so-' wie Wicklungsanschlußelemente tragenden Spulenkörper, wo- - bei mindestens eines der Wicklungsanschlußelemente an einem Spulenflansch befestigt ist, von dort in den Wicklungsbereich gebogen ist und im Wicklungsbereich einen Anschlußstift bildet, dadurch gekennzeichnet , daß das Anschlußelement (5, 6; 25, 26) mit einem geradlinigen, runden Querschnitt und glatte Oberfläche aufweisenden Befestigungsabschnitt (5d) senkrecht zur Axialrichtung der Spule in dem Spulenflansch (3) eingebettet ist und durch Abbiegung um 90° ein Abstandsstück (5a, 6a; 25a, 26a) und durch weitere Abbiegung um 90° den Anschlußstift (5b, 6b; 25b, 26b) bildet.1. Electromagnetic relay with a coil and 'like winding connection elements carrying bobbin, - at least one of the winding connection elements is attached to a coil flange, from there is bent into the winding area and forms a connecting pin in the winding area, characterized in that the connecting element (5, 6; 25, 26) with a rectilinear, round cross-section and smooth surface fastening section (5d) is embedded perpendicular to the axial direction of the coil in the coil flange (3) and a spacer (5a, 6a; 25a , 26a) and by further bending through 90 ° forms the connecting pin (5b, 6b; 25b, 26b). 2. Relais nach Anspruch 1, dadurch gekennzeichnet , daß der Befestigungsabschnitt (5d) des Anschlußelementes (5, 6; 25, 26) parallel zum Anschlußstift (5b, 6b; 25b, 26b) verläuft.2. Relay according to claim 1, characterized in that the fastening section (5d) of the connecting element (5, 6; 25, 26) runs parallel to the connecting pin (5b, 6b; 25b, 26b). 3. Relais nach Anspruch 1 oder 2, dadurch gekennzeichnet , daß das dem Anschlußstift (5b, 6b) entgegengesetzte Ende des Anschlußelementes (5, 6) einen aus dem Spulenflansch (3) herausragenden Anwikkelstift (5c, 6c) bildet, der parallel zum Abstandsstück (5a) gebogen ist.3. Relay according to claim 1 or 2, characterized in that the terminal pin (5b, 6b) opposite end of the connecting element (5, 6) forms an out of the coil flange (3) protruding pin (5c, 6c) which is parallel to the spacer (5a) is bent. 4. Relais nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet , daß der Spulenflansch (3) im Bereich des Abstandsstückes (5a) und gegebenenfalls des Anwickelstiftes (5c) jeweils einen Absatz (9, 10) aufweist.4. Relay according to one of claims 1 to 3, characterized in that the coil flange (3) in the region of the spacer (5a) and optionally the winding pin (5c) each have a shoulder (9, 10). 5. Relais nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet , daß der Anschlußstift (25b, 26b) durch einen auf die Anschlußseite des Relais aufgesetzten Rahmen (30) fixiert ist.5. Relay according to one of claims 1 to 4, characterized in that the connecting pin (25b, 26b) is fixed by a frame (30) placed on the connection side of the relay. 6. Relais nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Anschlußstift (5b, 6b, 25b, 26b) durch eine den Spulenkörper (1; 21) einhüllende Vergußmasse (17; 29) fixiert ist.6. Relay according to one of claims 1 to 5, characterized in that the connecting pin (5b, 6b, 25b, 26b) is fixed by a casting compound (17; 29) enveloping the coil body (1; 21). 7. Verfahren zur Herstellung eines elektromagnetischen Relais nach Anspruch 1, dadurch gekennzeichnet , daß der Spulenkörper (1; 21) aus Isolierstoff geformt wird, wobei in mindestens einem Spulenflansch je mindestens ein Anschlußelement (5, 6, 25, 26) in Form eine geraden Drahtes mit rundem Querschnitt eingebettet wird, daß das nach einer Seite herausstehende-Drahtende zweimal um 90° so gebogen wird, daß die abgebogenene Drahtabschnitte (5a, 5b, 6a, 6b, 25a, 25b, 26a, 26b) nicht in den Wickelraum reichen, wobei das zwischen der ersten und der zweiten Biegung gebildete Abstandsstück (5a) dem gewünschten Abstand zwischen der Einbettungsachse und dem Anschlußstift'(5b) entspricht, daß dann die Wicklung auf den Spulenkörper aufgebracht und je ein Wicklungsende mit einem aus dem Spulenflansch (3) vorstehenden Anwickelabschnitt (5c, 6c) des Anschlußelementes verbunden wird und daß dann das Abstandsstück (5a, 6a) mit dem Anschlußstift (5b, 6b) durch Drehen des Anschlußelementes (5, 6) um seine Einbettungsachse in den Bereich neben bzw. unter der Wicklung (16) gebracht wird.7. A method for producing an electromagnetic relay according to claim 1, characterized in that the coil body (1; 21) is formed from insulating material, with at least one connecting element (5, 6, 25, 26) in the form of a straight in at least one coil flange Wire with a round cross section is embedded in such a way that the wire end protruding to one side is bent twice by 90 ° in such a way that the bent wire sections (5a, 5b, 6a, 6b, 25a, 25b, 26a, 26b) do not reach into the winding space, wherein the spacer (5a) formed between the first and the second bend corresponds to the desired distance between the embedding axis and the connecting pin '(5b), that the winding is then applied to the coil former and one winding end each with one protruding from the coil flange (3) The winding section (5c, 6c) of the connection element is connected and that the spacer (5a, 6a) with the connection pin (5b, 6b) is turned by turning the connection element (5, 6) ne embedding axis is brought into the area next to or below the winding (16). 8. Verfahren nach Anspruch 7, dadurch gekennzeichnet , daß die erste Biegung des Anschlußelementes (5, 6) in eine zur Axialrichtung der Spule senkrechte Richtung und die zweite Biegung in eine zur Einbettungsachse parallele Richtung erfolgt und daß das Anschlußelement nach dem Wickeln um einen Winkel von 90° verdreht wird.8. The method according to claim 7, characterized in that the first bend of the connecting element (5, 6) in a direction perpendicular to the axial direction of the coil and the second bend in a direction parallel to the embedding axis and that the connecting element after winding at an angle is rotated by 90 °. 9. Verfahren nach Anspruch 7 oder 8, dadurch gekennzeichnet , daß der Spulenkörper (1; 21) nach dem Verdrehen der Anschlußelemente (5, 6, 25, 26) in Gießharz (17; 29) eingebettet wird.9. The method according to claim 7 or 8, characterized in that the coil former (1; 21) after turning the connection elements (5, 6, 25, 26) in casting resin (17; 29) is embedded. 10. Verfahren nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet , daß der Spulenkörper (21) nach dem Verdrehen der-Anschlußelemente (25, 26) in einer Kappe (28) angeordnet wird, daß über die Anschlußstifte (25b, 26b) ein Rahmen (30) angeordnet wird und daß dann Gießharz (29) in die Kappe (28) eingefüllt wird.10. The method according to any one of claims 7 to 9, characterized in that the coil body (21) after rotating the connecting elements (25, 26) is arranged in a cap (28) that a via the connecting pins (25b, 26b) Frame (30) is arranged and that then casting resin (29) is filled into the cap (28).
EP84112528A 1983-10-20 1984-10-17 Electromagnetic relay and method for its manufacture Expired EP0142061B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84112528T ATE33730T1 (en) 1983-10-20 1984-10-17 ELECTROMAGNETIC RELAYS AND METHOD OF PRODUCTION.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3338182 1983-10-20
DE19833338182 DE3338182A1 (en) 1983-10-20 1983-10-20 ELECTROMAGNETIC RELAYS AND METHOD FOR THE PRODUCTION THEREOF

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EP0142061A1 true EP0142061A1 (en) 1985-05-22
EP0142061B1 EP0142061B1 (en) 1988-04-20

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AT (1) ATE33730T1 (en)
DE (2) DE3338182A1 (en)

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EP0348909A2 (en) * 1988-06-30 1990-01-03 Siemens Aktiengesellschaft On-load electromagnetic relay
EP2251886A1 (en) * 2009-05-14 2010-11-17 Good Sky Electric Co., Ltd. Electromagentic Relay and Method for Assembling the Same

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AT410854B (en) * 1994-02-22 2003-08-25 Tyco Electronics Austria Gmbh Coil bobbin for a relay

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EP0348909A2 (en) * 1988-06-30 1990-01-03 Siemens Aktiengesellschaft On-load electromagnetic relay
EP0348909A3 (en) * 1988-06-30 1991-07-17 Siemens Aktiengesellschaft On-load electromagnetic relay
EP2251886A1 (en) * 2009-05-14 2010-11-17 Good Sky Electric Co., Ltd. Electromagentic Relay and Method for Assembling the Same

Also Published As

Publication number Publication date
DE3338182A1 (en) 1985-05-02
DE3470629D1 (en) 1988-05-26
ATE33730T1 (en) 1988-05-15
EP0142061B1 (en) 1988-04-20

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