EP0142061B1 - Electromagnetic relay and method for its manufacture - Google Patents

Electromagnetic relay and method for its manufacture Download PDF

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Publication number
EP0142061B1
EP0142061B1 EP84112528A EP84112528A EP0142061B1 EP 0142061 B1 EP0142061 B1 EP 0142061B1 EP 84112528 A EP84112528 A EP 84112528A EP 84112528 A EP84112528 A EP 84112528A EP 0142061 B1 EP0142061 B1 EP 0142061B1
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EP
European Patent Office
Prior art keywords
winding
terminal
coil
coil body
relay
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
EP84112528A
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German (de)
French (fr)
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EP0142061A1 (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 according to the first part of claim 1, and also a method for producing such a relay.
  • connection pins in the area of the coil winding in addition to the connection pins for contact elements arranged in the area of the coil flanges and one or more coil windings, in order to ensure the necessary spacing and insulating distances between the connection 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 disrupt and hinder the winding.
  • the coil connection part to be bent in is not arranged next to the coil winding, but rather in the space below the winding, so that there is still room for the bending tool to attack.
  • the connection element used in the known relay requires several machining operations, since the sheet metal part has to be cut and pre-bent before embedding in the coil former and is only finally bent into the desired shape after being embedded in the coil former and after the coil winding has been applied.
  • a relay of the type mentioned is already known from GB-A-2 030 366.
  • a connection element is embedded in a plane parallel to the coil axis in the coil body.
  • This connection element is cut from a flat circuit board so that a multiple pin bends a connection pin in the winding area of the coil.
  • This angled section outside the embedding is bent downwards so that the connection pin is perpendicular to the installation level of the relay.
  • the part of the connecting element, including the connecting pin, projecting into the winding space is temporarily bent outwards so that it no longer interferes with the wiki. Then it is bent back into the changing room.
  • the connecting element with the connecting pin is deformed twice, namely bent out of the winding space before winding and bent back into the winding space after winding, which can already lead to an undesirable change in the mechanical properties of this connecting element. It is essential, however, that the two bends require more equipment to actually bring the bent back pin exactly to the intended position in the connection grid, especially since this bend must be carried out directly on the coil former or on the winding, i.e. tools can only insufficiently attack to align the connecting element in the bending area.
  • connection pins run in a coil flange with their longitudinal axis parallel to the coil axis.
  • they are not arranged in the winding area or pivotable into this winding area. Only the winding end to be connected to the coil wire can be pivoted and can be lowered into a chamber of the coil flange.
  • the pivotability is achieved in that the coil body is constructed from two half-shells and the connecting elements are loosely inserted in recesses in these two half-shells. A possibility of bringing embedded connection elements exactly into the coil winding area is not shown there.
  • the object of the invention is to improve a relay of the type mentioned at the outset in such a way that the connection elements provided in the coil winding area can be brought into a precisely defined position in the connection grid provided with the least possible outlay on tools and on operations due to their design and fastening.
  • a method for producing such a relay is to be specified.
  • this object is achieved by applying the characterizing features of patent claim 1.
  • the object is achieved with the characterizing features of claim 7.
  • 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 is obtained in a very simple manner and with two simple bending processes by 90 ° in each case, which pin is at a distance exactly from the embedding axis can be measured. 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 into the desired shape outside the coil winding area immediately after the coil body has been sprayed and the associated injection of the connecting element, and after winding the coil by a simple rotary movement about the embedding axis into the space next to or to bring under the winding. It has been shown that a round wire embedded in this way can easily be rotated as in a bearing.
  • connection element need only be bent once, namely between spraying the coil body and applying the winding, in a simple manner, this bending process being able to take place to the side of the coil flange and the dimensions provided with respect to the connection grid being thereby easily maintained 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 cranked shape and only needs to be rotated by 90 ° about the embedding axis after winding the coil.
  • other bending configurations are also conceivable, in which the connecting pin is first formed outside the winding area and 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 which projects from the coil flange and 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. This shortens the embedding length and makes it easier to subsequently twist the connection element.
  • 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.
  • connection pin which is brought into the winding area by turning it, 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.
  • connection pin can be fixed in the area of the winding when the relay is subsequently cast with the cast resin which also embeds the spacer and part of the connection pin.
  • Fig. 1 shows a coil former 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.
  • 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 phantom).
  • the connecting pins 5 and 6, which are perpendicular to the base plane or the later installation plane of the relay, are first bent outwards by 90 ° with their sections emerging on the underside of the coil flange 3 and then again bent downwards by 90 °. In this way, for example, a spacer 5a and a connecting pin 5b are formed on the connecting element 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 connecting pin 6 is also turned 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, as a result of which the embedding length of the connection elements 5 and 6 is kept relatively short and enables 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 and 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.
  • FIGS. 4 and 5 A modified embodiment is shown in FIGS. 4 and 5.
  • the coil former 21 is shaped such 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 also 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 cast 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 filled in, which fixes the connection pins 25b and 26b, the holding 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 gemäss dem ersten Teil des Patentanspruchs 1, ausserdem ein Verfahren zur Herstellung eines derartigen Relais.The invention relates to an electromagnetic relay according to the first part of claim 1, and also 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 Wickeln stören und behindern würden.In the case of very small relays, it may be expedient to provide at least some of the connection pins in the area of the coil winding in addition to the connection pins for contact elements arranged in the area of the coil flanges and one or more coil windings, in order to ensure the necessary spacing and insulating distances between the connection 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 disrupt and hinder the winding.

So ist es aus der EP-A-0 082 238 bereits bekannt, bei einem Relais 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, das nach dem Wickeln der Spule und nach dem Anwikkeln 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 das 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.Thus, it is already known from EP-A-0 082 238 to attach a coil connection part in a relay to the coil former in such a way that it is located outside the coil winding area and after winding the coil into the coil winding area before winding the coil wire to bend. However, the coil connection part used there consists of a relatively complicatedly shaped sheet metal part, which is bent into the winding area after winding the coil and after winding the winding ends with a special bending tool. 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 connecting 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 rather in the space below the winding, so that there is still room for the bending tool to attack. 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 has to be cut and pre-bent before embedding in the coil former and is only finally bent into the desired shape after being embedded in the coil former and after the coil winding has been applied.

Ein Relais der eingangs genannten Art ist bereits aus der GB-A-2 030 366 bekannt. Dort ist ein Anschlusselement in einer zur Spulenachse parallelen Ebene im Spulenkörper eingebettet. Dieses Anschlusselement ist aus einer flachen Platine so geschnitten, dass durch eine mehrfache Abwinkelung ein Anschlussstift in den Wicklungsbereich der Spule zu liegen kommt. Dieser abgewinkelte Abschnitt ausserhalb der Einbettung wird nach unten abgebogen, so dass der Anschlussstift senkrecht zur Einbauebene des Relais steht. Um nun bei diesem bekannten Relais die Wicklung aufbringen zu können, wird der in den Wickelraum vorstehende Teil des Anschlusselementes einschliesslich des Anschlussstiftes vorübergehend nach aussen weggebogen, so dass er beim Wikkein nicht mehr stört. Danach wird er wiederum in den Wickelraum zurückgebogen. Somit wird dort das Anschlusselement mit dem Anschlussstift zweimal deformiert, nämlich vor dem Wickeln aus dem Wickelraum herausgebogen und nach dem Wickeln wiederum in den Wickelraum hineingebogen, was schon zu einer unerwünschten Veränderung in den mechanischen Eigenschaften dieses Anschlusselementes führen kann. Wesentlich aber ist dabei, dass durch das zweimalige Verbiegen ein erhöhter Aufwand an Vorrichtungen erforderlich ist, um den zurückgebogenen Anschlussstift tatsächlich genau an die vorgesehene Stelle im Anschlussraster zu bringen, zumal diese Biegung unmittelbar am Spulenkörper bzw. an der Wicklung ausgeführt werden muss, also Werkzeuge zum Ausrichten des Anschlusselementes im Biegebereich nur unzulänglich angreifen können.A relay of the type mentioned is already known from GB-A-2 030 366. There, a connection element is embedded in a plane parallel to the coil axis in the coil body. This connection element is cut from a flat circuit board so that a multiple pin bends a connection pin in the winding area of the coil. This angled section outside the embedding is bent downwards so that the connection pin is perpendicular to the installation level of the relay. In order to be able to apply the winding to this known relay, the part of the connecting element, including the connecting pin, projecting into the winding space is temporarily bent outwards so that it no longer interferes with the wiki. Then it is bent back into the changing room. Thus, the connecting element with the connecting pin is deformed twice, namely bent out of the winding space before winding and bent back into the winding space after winding, which can already lead to an undesirable change in the mechanical properties of this connecting element. It is essential, however, that the two bends require more equipment to actually bring the bent back pin exactly to the intended position in the connection grid, especially since this bend must be carried out directly on the coil former or on the winding, i.e. tools can only insufficiently attack to align the connecting element in the bending area.

Daneben ist aus der DE-B-1 272 454 ein Spulenkörper für elektromagnetische Relais bekannt, bei welchem Anschlussstifte in einem Spulenflansch mit ihrer Längsachse parallel zur Spulenachse verlaufen. Sie sind jedoch nicht im Wicklungsbereich angeordnet oder in diesen Wicklungsbereich hinein verschwenkbar. Lediglich das mit dem Spulendraht zu verbindende Anwickelende ist verschwenkbar und in eine Kammer des Spulenflansches versenkbar. Dabei wird die Verschwenkbarkeit dadurch erreicht, dass der Spulenkörper aus zwei Halbschalen aufgebaut ist und die Anschlusselemente lose in Ausnehmungen dieser beiden Halbschalen eingelegt sind. Eine Möglichkeit, eingebettete Anschlusselemente genau im Rastermass in den Spulenwicklungsbereich zu bringen, ist dort nicht aufgezeigt.In addition, from DE-B-1 272 454 a coil body for electromagnetic relays is known, in which connection pins run in a coil flange with their longitudinal axis parallel to the coil axis. However, they are not arranged in the winding area or pivotable into this winding area. Only the winding end to be connected to the coil wire can be pivoted and can be lowered into a chamber of the coil flange. The pivotability is achieved in that the coil body is constructed from two half-shells and the connecting elements are loosely inserted in recesses in these two half-shells. A possibility of bringing embedded connection elements exactly into the coil winding area is not shown there.

Aufgabe der Erfindung ist es, ein Relais der eingangs genannten Art so zu verbessern, dass im Spulenwickelbereich vorgesehene Anschlusselemente aufgrund ihrer Gestaltung und Befestigung mit einem möglichst geringen Aufwand an Werkzeug und an Arbeitsgängen in eine genau definierte Lage im vorgesehenen Anschlussraster gebracht werden können. Ausserdem soll ein Verfahren zur Herstellung eines derartigen Relais angegeben werden.The object of the invention is to improve a relay of the type mentioned at the outset in such a way that the connection elements provided in the coil winding area can be brought into a precisely defined position in the connection grid provided with the least possible outlay on tools and on operations due to their design and fastening. In addition, a method for producing such a relay is to be specified.

Erfindungsgemäss wird diese Aufgabe durch Anwendung der kennzeichnenden Merkmale des Patentanspruchs 1 gelöst. Hinsichtlich des Verfahrens wird die Aufgabe mit den kennzeichnenden Merkmalen des Anspruchs 7 gelöst.According to the invention, this object is achieved by applying the characterizing features of patent claim 1. With regard to the method, the object is achieved with the characterizing features of claim 7.

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 Spulenwickelbereiches 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 Spulenwickelbereich 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 is obtained in a very simple manner and with two simple bending processes by 90 ° in each case, which pin is at a distance exactly from the embedding axis can be measured. 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 into the desired shape outside the coil winding area immediately after the coil body has been sprayed and the associated injection of the connecting element, and after winding the coil by a simple rotary movement about the embedding axis into the space next to or to bring under the winding. It has been shown that a round wire embedded in this way can easily be rotated 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 need only be bent once, namely between spraying the coil body and applying the winding, in a simple manner, this bending process being able to take place to the side of the coil flange and the dimensions provided with respect to the connection grid being thereby easily maintained 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 cranked shape and only needs to be rotated by 90 ° about the embedding axis after winding the coil. However, other bending configurations are also conceivable, in which the connecting pin is first formed outside the winding area and 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 which projects from the coil flange and 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. This shortens the embedding length and makes it easier to subsequently twist the connection element. 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 turning it, 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. In any case, the connection pin can be fixed in the area of the winding when the relay is subsequently cast with the cast resin which also embeds the spacer and part of the connection pin.

Die Erfindung wird nachfolgend an einem Ausführungsbeispiel anhand der Zeichnung näher erläutert. Es zeigt:

  • 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 Funktionselemente des Relais speziell gestaltet sind. 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 Anschlusselement 5 ein Abstandsstück 5a und ein Anschlussstift 5b gebildet. Die Länge des Abstandsstückes 5a entspricht dem später gewünschten Abstand des Anschlussstifes 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.Fig. 1 shows a coil former 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. 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 phantom). The connecting pins 5 and 6, which are perpendicular to the base plane or the later installation plane of the relay, are first bent outwards by 90 ° with their sections emerging on the underside of the coil flange 3 and then again bent downwards by 90 °. In this way, for example, a spacer 5a and a connecting pin 5b are formed on the connecting element 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 Wicklungsanfänge 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'. Correspondingly, the connecting pin 6 is also turned 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 Anwickelstift7c 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. At the top as well as on the underside of the coil flange 3, paragraphs 9 and 10 are also provided, as a result of which the embedding length of the connection elements 5 and 6 is kept relatively short and enables 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. A contact tongue 11 is arranged in the interior of the coil former and 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.A modified embodiment is shown in FIGS. 4 and 5. In this case, the coil former 21 is shaped such 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 also 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 cast 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. Thereafter, the casting resin 29 is filled in, which fixes the connection pins 25b and 26b, the holding web 30 and the protective cap 28 to one another and to the coil former after curing.

Claims (10)

1. An electromagnetic relay comprising a coil body (1; 21) which 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.
2. A relay as claimed in Claim 1, characterised in that the fixing section (5d) of the terminal (5, 6; 25, 26) extends in parallel to the terminal pin (5b, 6b; 25b, 26b).
3. A relay as claimed in Claims 1 or 2, characterised in that that end of the terminal (5, 6) which lies opposite the terminal pin (5b, 6b) forms a winding pin (5c, 6c) which projects from the coil flange (3) and is bent parallel to the spacer (5a).
4. A relay as claimed in one of Claims 1 to 3, characterised in that in the region of the respective outlet point of the fixing section (5d) to the spacer (5a), and where appropriate to the winding pin (5c, 6c) a recess shoulder (9,10) is provided in the coil body (1; 21).
5. A relay as claimed in one of Claims 1 to 4, characterised in that the terminal pin (25b, 26b) is fixed by a frame (30) which is positioned on the terminal side of the relay.
6. A relay as claimed in one of Claims 1 to 5, characterised in that the terminal pin (5b, 6b; 25b, 26b) is fixed by a casting compound (17; 29) which encases the coil body (1; 21).
7. A method of producing an electromagnetic relay as claimed in Claim 1, where a coil body (1; 21) is moulded from insulating material, and when the coil body is released from the mould at least one terminal (5,6; 25,26) is embedded into at least one coil flange (3) and is then bent at an angle outside of the area in which it is embedded, where, following the application of the winding to the coil body (1; 21), a terminal pin (5a, 6a; 25a, 26a) which is moulded to the terminal (5, 6; 25, 26) is introduced into the area beside and below the winding (27), characterised in that the terminal (5, 6; 25, 26) embedded in the coil body (1; 21) is in the form of a straight wire component with a round cross-section, that the laterally projecting wire end is bent by 90° twice so as to form a spacer (5a, 6a) and a terminal pin (5b, 6b; 25b, 26b) such that the bent wire sections do not extend into the winding chamber, that then the winding is applied to the coil body (1; 21) and that finally the terminal pin (5b; 6b) is brought into the area beside and below the winding by rotating the terminal (5, 6; 25, 26) about its embedded axis.
8. A method as claimed in Claim 7, characterised in that the first bend in the terminal (5, 6) extends in a direction at right angles to the axial direction of the coil, and the second bend extends in a direction parallel to the embedding axis, and that following the winding the terminal is rotated through an angle of 90°.
9. A method as claimed in Claims 7 or 8, characterised in that following the rotation of the terminal (5, 6, 25, 26) the coil body (1; 21) is embedded in casting resin (17; 29).
10. A method as claimed in one of Claims 7 to 9, characterised in that following the rotation of the terminals (25, 26) the coil body (21) is arranged in a cap (28), that a frame (30) is arranged over the terminal pins (25b, 26b) and that casting resin (29) is then poured 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

Publications (2)

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

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ID=6212350

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84112528A Expired EP0142061B1 (en) 1983-10-20 1984-10-17 Electromagnetic relay and method for its manufacture

Country Status (3)

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EP (1) EP0142061B1 (en)
AT (1) ATE33730T1 (en)
DE (2) DE3338182A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8808401U1 (en) * 1988-06-30 1988-08-18 Siemens AG, 1000 Berlin und 8000 München Electromagnetic load relay
AT410854B (en) * 1994-02-22 2003-08-25 Tyco Electronics Austria Gmbh Coil bobbin for a relay
EP2251886B1 (en) * 2009-05-14 2014-04-09 Good Sky Electric Co., Ltd. Electromagentic Relay and Method for Assembling the Same

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1272454B (en) 1964-06-05 1968-07-11 Siemens Ag Coil body for electromagnetic relays
US4031493A (en) * 1975-12-12 1977-06-21 Bell Telephone Laboratories, Incorporated Miniature low profile relay
DE2647203C3 (en) * 1976-10-19 1984-09-20 Siemens AG, 1000 Berlin und 8000 München Miniature electromagnetic relay
DE2709219C2 (en) * 1977-03-03 1979-05-17 Westfaelische Metall Industrie Kg, Hueck & Co, 4780 Lippstadt Relay with a coil body made of insulating material
US4145805A (en) * 1977-05-11 1979-03-27 Standex International Corporation Method of making a reed relay with molded bobbin
AU529316B2 (en) 1978-08-29 1983-06-02 Sds Relais Ag Electromagnetic relay
JPS5760633A (en) * 1980-09-26 1982-04-12 Fujitsu Ltd Solenoid relay
DE3150125C2 (en) 1981-12-18 1988-05-05 Hermann Stribel KG, 7443 Frickenhausen relay

Also Published As

Publication number Publication date
ATE33730T1 (en) 1988-05-15
DE3338182A1 (en) 1985-05-02
DE3470629D1 (en) 1988-05-26
EP0142061A1 (en) 1985-05-22

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