EP0214469B1 - Electromagnetic relay - Google Patents

Electromagnetic relay Download PDF

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Publication number
EP0214469B1
EP0214469B1 EP86110873A EP86110873A EP0214469B1 EP 0214469 B1 EP0214469 B1 EP 0214469B1 EP 86110873 A EP86110873 A EP 86110873A EP 86110873 A EP86110873 A EP 86110873A EP 0214469 B1 EP0214469 B1 EP 0214469B1
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EP
European Patent Office
Prior art keywords
yoke
armature
coil
retaining
spring
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 - Lifetime
Application number
EP86110873A
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German (de)
French (fr)
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EP0214469A1 (en
Inventor
Michael Dipl.-Ing. Dittmann
Heinz Stadler
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Siemens AG
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Siemens AG
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Filing date
Publication date
Priority claimed from DE19853528715 external-priority patent/DE3528715A1/en
Priority claimed from DE19853543092 external-priority patent/DE3543092A1/en
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT86110873T priority Critical patent/ATE58800T1/en
Publication of EP0214469A1 publication Critical patent/EP0214469A1/en
Application granted granted Critical
Publication of EP0214469B1 publication Critical patent/EP0214469B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/24—Parts rotatable or rockable outside coil
    • H01H50/28—Parts movable due to bending of a blade spring or reed

Definitions

  • the invention relates to an electromagnetic relay with a coil body, which carries a winding between two flanges, with an angular yoke, the first leg of which runs perpendicular to the coil axis on the second coil body flange and is coupled to a core running in the coil interior and the second leg parallel to the coil axis runs over the winding, the second yoke leg having at its free end at least one retaining pin projecting beyond the bearing edge, with a plate-shaped armature which is mounted on the bearing edge at the free end of the second yoke leg and on the end face in front of the first coil flange with the free core end forms a working air gap and is fastened with an armature retaining spring which is fastened with a first section to the retaining pin of the yoke, with a second section resting on the armature and with a third section as a contact spring with at least one Counter-contact element cooperates.
  • Such a relay is known from FR-A 1 512 569. With such a construction, it is possible to carry out a simple adjustment of the armature by bending the armature holding pin or pins.
  • the known relay has a complex construction in which the many individual parts have to be attached to one another in a complicated manner.
  • a base plate is provided there, on which both the magnet system with coil and yoke and the mating contact element are attached individually. Insulation between the coil winding and the contact system is not provided there and is also not easy to carry out.
  • the object of the invention is to construct a relay of the type mentioned in a compact design so that the coil space and the contact space can be sealed against each other and the outside in a simple manner and that if necessary, a simple filling of the coil space with sealing compound is possible.
  • the armature retaining spring rests with its first portion in the area in front of the bearing edge on the retaining pin or pins and is fixed in that the coil body serves as a base body that on the first flange a pocket-shaped contact space is integrally formed on the coil former, in which the counter-contact elements are anchored and that a protective cap placed over the coil former has a circumferential rib on the inside, which on the top of the second yoke leg in the area of the first coil former flange and on the two side regions of this coil flange below Formation of a continuous capillary gap is present.
  • the armature retaining spring is thus fastened to projecting retaining pins of the yoke in such a way that the surface of the second yoke leg remains free up to the bearing edge, so that neither a moving part, such as the bearing spring, extends into the area above the winding nor the surface of the Yokes by such a bearing spring has additional, difficult to seal steps.
  • a separation between the coil space and the switching space is then achieved by means of a rib formed in the protective cap and resting on the second yoke leg in the region of the first coil flange and resting on both sides of the first coil flange, the latter separating the movable parts and the Includes contact elements and encloses the pocket-shaped contact space.
  • the rib of the protective cap forms with the second yoke leg on the top of the relay and with the first coil flange on both sides a continuous capillary gap, which also potting compound is filled when filling the coil space with potting compound, but does not flow into the control room due to the capillary effect.
  • the contact space integrally formed on the first coil flange with the corresponding opposite side walls of the protective cap also forms a continuous capillary gap, so that the switching space including the contact space is sealed all around when the coil space is cast becomes.
  • the potting compound which is filled up to the edge of the protective cap on the connection side of the relay, at the same time seals the bushings for the contact elements fastened in the contact space by insertion.
  • the second coil flange has ribs formed on both sides and enclosing the first yoke leg.
  • the dielectric strength of the relay is significantly increased by pouring casting compound into the coil space, since the space between the coil winding and the second yoke leg arranged above the winding is completely filled with insulating material.
  • the presupposed design of the bearing point for the armature with the preferred holding pin (s) of the yoke ensures that the armature holding spring is only fastened in the area in front of the bearing edge and in front of the armature itself.
  • the armature restoring force can be adjusted by bending the retaining pin or the retaining pin.
  • a predetermined bending point with a reduced cross section is expediently provided on the holding pin or pins. Neither the narrowing of the yoke cross-section by the formation of the holding pins nor the predetermined bending point impair the magnetic flux of the iron circuit, since the holding pins are already outside the bearing edge.
  • the anchor retaining spring can be bent and shaped differently to suit the type of retaining pin or the retaining pin, for example with a central spring bar and two outer fastening tabs if the retaining pins are each arranged in the side region of the yoke end, or with a central one Recess between two side spring bars and a cross bar for attachment to a central retaining pin.
  • the holding pin extends in the extension of the plane of the second yoke leg, but this or these can also form an angle with respect to the yoke leg plane.
  • the holding pin in front of the anchor could be bent or bent upwards.
  • the first section of the retaining spring can either extend outward from the support on the armature, i.e. be bent away from the anchor into the yoke plane, or this first spring section can first be curved away from the anchor surface and then inwards, i.e. be bent towards the anchor in the plane of the yoke surface.
  • the holding spring with its different sections can perform different functions, for example to protect the anchor from impact.
  • a transverse web which runs parallel to the bearing edge and on which the first section of the armature retaining spring rests, is formed on at least one holding web.
  • the armature retaining spring rests with its first section essentially over its entire width.
  • the armature retaining spring is thus only subjected to a pure bending stress in the kink between the first and the second spring section, with which it can withstand a high number of switching cycles without the risk of breakage.
  • the anchor retaining spring rests on the crossbar essentially over its entire width.
  • the attachment can be carried out by welding to the holding webs on the side of the crossbar.
  • the anchor retaining spring is welded directly onto the crossbar with one or two welding spots or is also fastened to the crossbar by a comparable method.
  • the yoke has integrally formed retaining webs in the extension of the two side edges, which are connected to one another via the transverse web, so that they enclose the armature retaining spring and, if appropriate, the armature in a frame shape with the transverse web and the opposite bearing edge.
  • the anchor is threaded with the retaining spring attached to it and bent to the outside through the frame-shaped slot between the retaining webs and the crossbar from below, and then the bent end of the anchor retaining spring is welded onto the crossbar from above.
  • a holding pin is provided only on one side, with which the crossbar forms a slot open on one side together with the bearing edge.
  • the assembly is simplified, since the armature with the armature retaining spring can be easily inserted into this slot from the side and then fastened.
  • the crossbar could be formed in a T-shape on both sides from the end of the retaining web, while the anchor retaining spring and the anchor in the central region would have to be excluded.
  • the relay shown in FIGS. 1 to 3 shows a coil body 1 as a carrier or base body, which carries a coil winding 2 and has a first and a second coil flange 3 or 4 for delimiting the winding space. Both coil flanges 3 and 4 have lugs 5 and 6 on the underside, which together define the installation level of the relay as a base.
  • the winding axis runs parallel to the installation plane of the relay, and a core 7 is arranged coaxially to the winding axis in the coil former, which has a widened pole piece 7a in the area of the first coil flange and is connected to an angular yoke 8 in the area of the second coil flange 4.
  • the first leg 8a of the yoke extends perpendicular to the installation plane in the area of the second coil flange 4 and is framed on both sides by rib-shaped projections 4a of this coil flange. At the bottom, the first yoke leg 8a merges into an integrally formed connecting pin 9, which serves as a power supply via the yoke for a movable contact spring 10.
  • the second yoke leg 8b is parallel to the installation level of the relay above the coil. At its free end it forms a bearing edge 8c for a flat armature 11, which forms a working air gap 12 with the core pole piece 7a.
  • the armature is fastened via an armature holding spring or contact spring 10 formed from sheet material, the first section 10a of which is fastened to holding pins 13 and 14 in the extension of the yoke leg 8b, the second spring leg 10b rests on the armature 11 and is connected to it, and the third Spring section 10c, as the actual contact spring, projects beyond the free armature end into a contact chamber 15, which is formed by a pocket-shaped extension 16 of the bobbin flange 3.
  • four mutually opposite insertion slots 17 are provided for receiving counter-contact elements 18.
  • the counter-contact elements 18 are each provided in the usual way with contact pieces 19 which cooperate with corresponding contact pieces 20 of the contact spring 10.
  • the contact spring can serve as a center contact spring or as a contact bridge without its own connection; in the latter case, the connecting pin 9 of the yoke 8 is not required.
  • the first section 10a of the armature retaining spring or contact spring 10 is angled outward in the area of the yoke surface away from the armature surface into the plane of the yoke surface and forms two lateral tabs 10d and 10e which rest on the retaining pins 13 and 14 and are fastened to them.
  • the two holding pins 13 and 14 are designed as extensions of the yoke leg 8b in its plane, a notch 21 being provided between the yoke leg 8b and the two holding pins 13 and 14 to form a predetermined bending point.
  • the armature 11 is narrower than the yoke leg 8b, so that the two holding pins 13 and 14 can reach past the armature on both sides.
  • the anchor could also have the width of the yoke leg 8b; in this case it would have to be excluded in the area of the holding pins 13 and 14.
  • the side parts of the anchor lying under the holding pins could serve as shock protection (see FIG. 4).
  • the armature retaining spring 10 is provided on both sides with stop tabs 10f and 10g which abut the retaining pins 13 and 14 in the event of an impact movement of the armature in the vertical direction.
  • the restoring force for the armature can be adjusted by bending the holding pins 13 and 14. Since the two holding pins are in front of the bearing edge 8c and in front of the armature, that is to say outside the iron flow circuit, there is no loss of magnetic flux due to the design of the holding pins.
  • the yoke width is fully used for the magnetic circuit.
  • the relay is finally provided with a protective cap 22, which encloses the entire relay with the exception of the installation side and is held on the bobbin 1 by means of locking lugs 23.
  • a protective cap 22 When the protective cap 22 is put on, the switching space 24 containing the movable parts with the contact chamber 15 is completely separated from the coil space, since a circumferential rib 25 lies both above the coil flange 3 on the yoke leg 8b and also forms sealing areas overlapping with the coil body flange 3 in the side regions .
  • the rib 25 can form a planar capillary gap 26 with the yoke leg 8b approximately above the coil former flange 3. Additional capillary gaps 27 are formed between the rib 25 and the inside of the bobbin flange 3.
  • the relay is cast with the connection side facing upwards, the coil space being filled with casting compound which envelops the winding and the yoke and also penetrates into the capillary gaps 26 and 27, but does not run any further into the switching space 24 or the contact chamber 15 .
  • the potting compound is filled up to the edge 22a of the protective cap 22, it also runs over the extension 16 in the region of the connection side and seals the bushings for the mating contact elements 18. At the same time, it runs into the capillary gaps 28 which are formed between the protective cap 22 and the side walls 16a and 16b of the extension 16.
  • the casting resin is distributed in these large capillary gaps, but does not penetrate into the contact space or the switching space, so that it is liquid-tightly sealed both from the outside world and from the coil winding.
  • Potting the coil winding with potting compound not only gives it the option an improved heat dissipation, but also an increased dielectric strength due to the insulating sealing compound between the coil winding and yoke. Contributing to the dielectric strength also contributes to the fact that the coil connecting pins 29 are completely embedded in the coil flange 4 with their upper ends 29a and are also isolated by casting with casting resin with their parts 29b protruding from the coil flange, to which the winding ends are wound and soldered so that only the terminal ends 29c are exposed.
  • the yoke leg 8b has the same retaining pins 13 and 14 as the example from FIG. 1.
  • an anchor retaining spring 30 is provided which, in contrast to FIG. 1, has an S-shaped upper portion 30a of the anchor is bent outwards and then inwards into the plane of the yoke leg surface. With laterally formed tabs 30d and 30e, the retaining spring is attached to the retaining pin 13 and 14 in the same way as the spring of FIG. 1.
  • the anchor 31 has laterally below the holding pins 13 and 14 shoulders 31 a and 31 b, which abut the holding pins 13 and 14 in the event of impacts in the vertical direction and thereby secure the anchor.
  • the yoke leg 8b only has a central retaining pin 43, while the armature 41 rests on both sides of this retaining pin 43 on the bearing edge 8c.
  • the armature retaining spring 40 is initially S-shaped on both sides away from the armature and then towards the armature in the plane of the yoke leg surface, wherein it rests on the holding pin 43 with a crossbar 40b and is fastened to it.
  • the armature restoring force can be adjusted by bending the holding pin 43.
  • the yoke leg 8b only has a central holding pin 43, while the holding spring 50 is bent with its upper region 50a away from the anchor directly into the plane of the yoke leg surface and rests on the holding pin 43 with its transverse web 50b.
  • FIG. 7 shows a further modification, in which two lateral retaining pins 63 and 64 are formed as extensions of the yoke leg 8b and carry the anchor retaining spring 60 at their upper section 60a via lateral tabs 60b and 60c.
  • the retaining pins could also be bent or cranked in another way, for example standing vertically upwards.
  • FIG. 8 shows a section of a relay, a yoke 78 with a first leg 78a and a second leg 78b lying flat over a coil, not shown.
  • This yoke leg 78b forms a bearing edge 78c, on which a flat armature 71 is mounted and fastened by means of an armature retaining spring 70.
  • This armature retaining spring 70 has a first section 70a for attachment to the yoke, a central section 70b to which it is connected to the armature 71, and a section 70c serving as a contact spring.
  • the yoke To hold the armature and the armature retaining spring, the yoke has two retaining webs 73 and 74 which are formed laterally in the extension of the yoke side edges and which are connected at the end to a transverse web 75.
  • a frame-shaped slot 72 is thus formed between the bearing edge 78c, the holding webs 73 and 74 and the transverse web 75, in which the armature 71 with the armature holding spring 70 lies.
  • the holding spring 70 lies with its section 70a over the entire width on the crosspiece 75, so that it is only subjected to bending during the armature movement. It is attached to the crossbar 75 via two welding spots 76.
  • Fig. 9 shows a modified embodiment, the yoke 88 is shown lying. This is only to show that the design of the armature holder according to the invention can also be used with a magnet system located in a housing.
  • the yoke 88 with its first leg 88a and its second leg 88b has a bearing edge 88c for an armature 81 which is not visible any further, and a holding web 83 which is formed on one side (on its underside) as an extension and has a transverse web 85 running parallel to the bearing edge welded to the crossbar 85 with its first section 80a, connected to the armature 81 with its central section 80b and equipped with a contact piece as a contact spring with its end section 80c.
  • the holding web 83 forms with the cross bar 85 and the bearing edge 88c a laterally or upwardly open slot 82, in which the armature 81 with the holding spring 80 can be inserted in a simple manner. If the magnet system is arranged horizontally in the manner shown, the armature and armature retaining spring can be inserted into the slot 82 from above.

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  • Electromagnetism (AREA)
  • Electromagnets (AREA)

Description

Die Erfindung betrifft ein elektromagnetisches Relais mit einem Spulenkörper, der zwischen zwei Flanschen eine Wicklung trägt, mit einem winkelförmigen Joch, dessen erster Schenkel an dem zweiten Spulenkörperflansch senkrecht zur Spulenachse verläuft sowie mit einem im Spuleninneren verlaufenden Kern gekoppelt ist und dessen zweiter Schenkel parallel zur Spulenachse über der Wicklung verläuft, wobei der zweite Jochschenkel an seinem freien Ende mindestens einen über die Lagerkante hinaus vorspringenden Haltezapfen besitzt, mit einem plattenförmigen Anker, der an der Lagerkante am freien Ende des zweiten Jochschenkels gelagert ist und stirnseitig vor dem ersten Spulenflansch mit dem freien Kernende einen Arbeitsluftspalt bildet und mit einer Ankerhaltefeder, die mit einem ersten Abschnitt an dem Haltezapfen des Joches befestigt ist, mit einem zweiten Abschnitt auf dem Anker aufliegend an diesem befestigt ist und mit einem dritten Abschnitt als Kontaktfeder mit mindestens einem Gegenkontaktelement zusammenwirkt.The invention relates to an electromagnetic relay with a coil body, which carries a winding between two flanges, with an angular yoke, the first leg of which runs perpendicular to the coil axis on the second coil body flange and is coupled to a core running in the coil interior and the second leg parallel to the coil axis runs over the winding, the second yoke leg having at its free end at least one retaining pin projecting beyond the bearing edge, with a plate-shaped armature which is mounted on the bearing edge at the free end of the second yoke leg and on the end face in front of the first coil flange with the free core end forms a working air gap and is fastened with an armature retaining spring which is fastened with a first section to the retaining pin of the yoke, with a second section resting on the armature and with a third section as a contact spring with at least one Counter-contact element cooperates.

Ein derartiges Relais ist aus der FR-A 1 512 569 bekannt. Bei einer solchen Konstruktion ist es möglich, eine einfache Justierung des Ankers durch Biegen an dem bzw. den Ankerhaltezapfen vorzunehmen. Allerdings liegt bei dem bekannten Relais eine aufwendige Konstruktion vor, bei der die vielen Einzelteile umständlich aneinander befestigt werden müssen. Insbesondere ist dort eine Sockelplatte vorgesehen, auf der sowohl das Magnetsystem mit Spule und Joch als auch die Gegenkontaktelement einzeln befestigt werden. Eine Isolierung zwischen Spulenwicklung und Kontaktsystem ist dort nicht vorgesehen und auf einfache Weise auch nicht durchzuführen. Insbesondere ist dort auch keine Möglichkeit angedeutet, in einem Gehäuse Spule und Kontaktsystem getrennt für sich unterzubringen und gegebenenfalls gegeneinander bzw. nach außen abzudichten. Häufig ist es vor allem auch erwünscht, daß die Spule in Vergußmasse eingebettet wird, wobei nicht nur eine verbesserte Isolierung, sondern auch eine bessere Wärmeabführung erzielt werden soll.Such a relay is known from FR-A 1 512 569. With such a construction, it is possible to carry out a simple adjustment of the armature by bending the armature holding pin or pins. However, the known relay has a complex construction in which the many individual parts have to be attached to one another in a complicated manner. In particular, a base plate is provided there, on which both the magnet system with coil and yoke and the mating contact element are attached individually. Insulation between the coil winding and the contact system is not provided there and is also not easy to carry out. In particular, there is also no indication of the possibility of accommodating the coil and contact system separately for one another in a housing and, if appropriate, sealing them off from one another or from the outside. Frequently, it is above all desirable that the coil be embedded in potting compound, whereby not only improved insulation but also better heat dissipation is to be achieved.

Bei einem aus DE-U 8 235 283 bekannten Relais ist ferner eine Ankerhaltefeder bogenförmig über die Ankerlagerung hinweg geführt, wobei der erste Federabschnitt flach auf der Oberseite des zweiten Jochschenkels aufliegt. Die Befestigungsstelle der Ankerhaltefeder liegt also hinter der Lagerkante auf dem breiten Jochschenkel, so daß eine nachträgliche Justierung dieser Feder und damit eine Einstellung der Ankerrückstellkraft nicht mehr möglich ist. Damit können die Kennwerte des Relais nicht optimal eingestellt werden. Außerdem ist bei dieser Konstruktion mit dem stromführenden Joch, das als Zuleitung für die Ankerhalte- bzw. Kontaktfeder dient, die Spannungsfestigkeit zwischen dem Joch und der Wicklung für verschiedene Anwendungsfälle nicht ausreichend. Für diese Fälle wurde zwar in der DE-C1-3 506 354 vorgeschlagen, eine Isolierkappe auf den bewickelten Spulenkörper vor dem Aufbringen des Joches aufzustecken. Dies bedingt allerdings die Herstellung und Montage der Isolierkappe als eines zusätzlichen Teiles. Außerdem ist das erwähnte bekannte Relais nur schwer abdichtbar, insbesondere ist ein dichter Abschluß der Spulenwicklung gegenüber dem Kontaktraum durch Vergußmasse nicht möglich, da die auf dem zweiten Jochschenkel aufliegende Ankerhaltefeder eine Trennung des Wickelraums von den beweglichen Relaisteilen nicht zuläßt.In a relay known from DE-U 8 235 283, an armature retaining spring is also guided in an arc over the armature bearing, the first spring section lying flat on the top of the second yoke leg. The point of attachment of the armature retaining spring is thus behind the bearing edge on the wide yoke leg, so that subsequent adjustment of this spring and thus adjustment of the armature restoring force is no longer possible. This means that the characteristics of the relay cannot be optimally set. In addition, in this construction with the current-carrying yoke, which serves as a feed line for the armature holding or contact spring, the dielectric strength between the yoke and the winding is not sufficient for various applications. For these cases, it was proposed in DE-C1-3 506 354 to put an insulating cap on the wound bobbin before the yoke was applied. However, this requires the manufacture and assembly of the insulating cap as an additional part. In addition, the known relay mentioned is difficult to seal, in particular a tight closure of the coil winding with respect to the contact space by sealing compound is not possible, since the armature retaining spring resting on the second yoke leg does not allow the winding space to be separated from the movable relay parts.

Aufgabe der Erfindung ist es, ein Relais der eingangs genannten Art in einer kompakten Bauform konstruktiv so zu gestalten, daß der Spulenraum und der Kontaktraum gegeneinander und nach außen jeweils auf einfache Weise abgedichtet werden können und daß bei Bedarf auch eine einfache Ausfüllung des Spulenraums mit Vergußmasse möglich ist.The object of the invention is to construct a relay of the type mentioned in a compact design so that the coil space and the contact space can be sealed against each other and the outside in a simple manner and that if necessary, a simple filling of the coil space with sealing compound is possible.

Diese Aufgabe wird erfindungsgemäß mit einem Relais der eingangs genannten Art dadurch gelöst, daß die Ankerhaltefeder mit ihrem ersten Abschnitt im Bereich stirnseitig vor der Lagerkante auf dem bzw. den Haltezapfen aufliegt und befestigt ist, daß der Spulenkörper als Grundkörper dient, daß an dem ersten Flansch des Spulenkörpers ein taschenförmiger Kontaktraum angeformt ist, in welchem die Gegenkontaktelemente verankert sind und daß eine über den Spulenkörper gestülpte Schutzkappe eine an der Innenseite umlaufende Rippe aufweist, welche auf der Oberseite des zweiten Jochschenkels im Bereich des ersten Spulenkörperflansches und an den beiden Seitenbereichen dieses Spulenflansches unter Bildung eines durchgehenden Kapillarspaltes anliegt.This object is achieved with a relay of the type mentioned above in that the armature retaining spring rests with its first portion in the area in front of the bearing edge on the retaining pin or pins and is fixed in that the coil body serves as a base body that on the first flange a pocket-shaped contact space is integrally formed on the coil former, in which the counter-contact elements are anchored and that a protective cap placed over the coil former has a circumferential rib on the inside, which on the top of the second yoke leg in the area of the first coil former flange and on the two side regions of this coil flange below Formation of a continuous capillary gap is present.

Bei dem erfindungsgemäßen Relais ist also die Ankerhaltefeder an vorspringenden Haltezapfen des Joches derart befestigt, daß die Oberfläche des zweiten Jochschenkels bis hin zur Lagerkante freibleibt, daß also weder ein bewegliches Teil, wie die Lagerfeder, in den Bereich über der Wicklung hineinreicht noch die Oberfläche des Joches durch eine solche Lagerfeder zusätzliche, schwer abzudichtende Stufen aufweist. Bei der erfindungsgemäßen Gestaltung wird dann durch eine in der Schutzkappe angeformte, im Bereich des ersten Spulenflansche auf dem zweiten Jochschenkel aufliegende und zu beiden Seiten an dem ersten Spulenflansch anliegende Rippe eine Trennung zwischen dem Spulenraum und dem Schaltraum erreicht, wobei letzterer die beweglichen Teile und die Kontaktelemente umfaßt und den taschenförmigen Kontaktraum einschließt.In the relay according to the invention, the armature retaining spring is thus fastened to projecting retaining pins of the yoke in such a way that the surface of the second yoke leg remains free up to the bearing edge, so that neither a moving part, such as the bearing spring, extends into the area above the winding nor the surface of the Yokes by such a bearing spring has additional, difficult to seal steps. In the design according to the invention, a separation between the coil space and the switching space is then achieved by means of a rib formed in the protective cap and resting on the second yoke leg in the region of the first coil flange and resting on both sides of the first coil flange, the latter separating the movable parts and the Includes contact elements and encloses the pocket-shaped contact space.

Die Rippe der Schutzkappe bildet dabei mit dem zweiten Jochschenkel an der Oberseite des Relais und mit dem ersten Spulenflansch an beiden Seiten jeweils einen durchgehenden Kapillarspalt, der beim Ausfüllen des Spulenraums mit Vergußmasse ebenfalls Vergußmasse aufnimmt, jedoch infolge der Kapillarwirkung nicht in den Schaltraum weiterfließen läßt. In weiterer Ausgestaltung bildet auch der taschenförmig am ersten Spulenflansch angeformte Kontaktraum mit den entsprechend gegenüberstehenden Seitenwänden der Schutzkappe ebenfalls einen durchgehenden Kapillarspalt, so daß der Schaltraum einschließlich des Kontaktraums beim Vergießen des Spulenraums ringsum abgedichtet wird. Durch die Vergußmasse, die bis zum Rand der Schutzkappe an der Anschlußseite des Relais aufgefüllt wird, werden gleichzeitig die Durchführungen für die im Kontaktraum durch Einstecken befestigten Kontaktelemente abgedichtet.The rib of the protective cap forms with the second yoke leg on the top of the relay and with the first coil flange on both sides a continuous capillary gap, which also potting compound is filled when filling the coil space with potting compound, but does not flow into the control room due to the capillary effect. In a further embodiment, the contact space integrally formed on the first coil flange with the corresponding opposite side walls of the protective cap also forms a continuous capillary gap, so that the switching space including the contact space is sealed all around when the coil space is cast becomes. The potting compound, which is filled up to the edge of the protective cap on the connection side of the relay, at the same time seals the bushings for the contact elements fastened in the contact space by insertion.

Zur Erhöhung der Spannungsfestigkeit zwischen der Spulenwicklung und dem stromführenden Joch ist weiterhin zweckmäßigerweise vorgesehen, daß der zweite Spulenflansch beiderseits angeformte, den ersten Jochschenkel einschließende Rippen aufweist. Im übrigen wird die Spannungsfestigkeit des Relais durch das Einfüllen von Vergußmasse in den Spulenraum wesentlich erhöht, da der Raum zwischen Spulenwicklung und dem oberhalb der Wicklung angeordneten zweiten Jochschenkel vollkommen mit Isolierstoff ausgefüllt ist.To increase the dielectric strength between the coil winding and the current-carrying yoke, it is furthermore expediently provided that the second coil flange has ribs formed on both sides and enclosing the first yoke leg. In addition, the dielectric strength of the relay is significantly increased by pouring casting compound into the coil space, since the space between the coil winding and the second yoke leg arranged above the winding is completely filled with insulating material.

Durch die vorausgesetzte Gestaltung der Lagerstelle für den Anker mit dem bzw. den vorgezogenen Haltezapfen des Joches wird erreicht, daß die Ankerhaltefeder nur mehr in dem Bereich vor der Lagerkante und vor dem Anker selbst befestigt ist. Durch Biegen des Haltezapfens bzw. der Haltezapfen kann dabei die Ankerrückstellkraft eingestellt werden. Zweckmäßigerweise wird dabei an dem bzw. den Haltezapfen eine Sollbiegestelle mit vermindertem Querschnitt vorgesehen. Weder die Verschmälerung des Jochquerschnitts durch Bildung der Haltezapfen noch die Sollbiegestelle beeinträchtigen dabei den Magnetfluß des Eisenkreises, da die Haltezapfen bereits außerhalb der Lagerkante liegen.The presupposed design of the bearing point for the armature with the preferred holding pin (s) of the yoke ensures that the armature holding spring is only fastened in the area in front of the bearing edge and in front of the armature itself. The armature restoring force can be adjusted by bending the retaining pin or the retaining pin. A predetermined bending point with a reduced cross section is expediently provided on the holding pin or pins. Neither the narrowing of the yoke cross-section by the formation of the holding pins nor the predetermined bending point impair the magnetic flux of the iron circuit, since the holding pins are already outside the bearing edge.

Je nach den sonstigen Gegebenheiten kann die Ankerhaltefeder in Anpassung an die Art des Haltezapfens bzw. der Haltezapfen verschieden gebogen und geformt sein, beispielsweise mit einem mittigen Federsteg und zwei äußeren Befestigungslappen, wenn die Haltezapfen jeweils im Seitenbereich des Jochendes angeordnet sind, oder mit einer mittigen Ausnehmung zwischen zwei seitlichen Federstegen sowie einem Quersteg zur Befestigung auf einem mittigen Haltezapfen. In bevorzugter Ausführungsform erstreckt sich der Haltezapfen bzw. erstrecken sich die Haltezapfen in der Verlängerung der Ebene des zweiten Jochschenkels, doch kann dieser bzw. können diese auch gegenüber der Jochschenkelebene einen Winkel bilden. Beispielsweise könnte der Haltezapfen vor dem Anker abgekröpft oder nach oben abgebogen sein. Im Extremfall wäre es dabei möglich, die Ankerhaltefeder vollkommen eben auszubilden, wobei ihr erster bzw. ihr Befestigungsabschnitt an einem oder mehreren senkrecht zur Jochschenkelebene stehenden Haltezapfen befestigt wäre.Depending on the other circumstances, the anchor retaining spring can be bent and shaped differently to suit the type of retaining pin or the retaining pin, for example with a central spring bar and two outer fastening tabs if the retaining pins are each arranged in the side region of the yoke end, or with a central one Recess between two side spring bars and a cross bar for attachment to a central retaining pin. In a preferred embodiment, the holding pin extends in the extension of the plane of the second yoke leg, but this or these can also form an angle with respect to the yoke leg plane. For example, the holding pin in front of the anchor could be bent or bent upwards. In an extreme case, it would be possible to make the anchor retaining spring completely flat, with its first or its attachment section attached to one or more retaining pins perpendicular to the plane of the yoke leg.

Wenn die Haltezapfen aber in der Ebene des Jochschenkels liegen, so kann der erste Abschnitt der Haltefeder entweder von der Auflage am Anker nach außen, d.h. vom Anker weg in die Jochebene gebogen sein, oder dieser erste Federabschnitt kann in einem Bogen zunächst von der Ankeroberfläche weg und dann nach innen, d.h. zum Anker hin in die Ebene der Jochoberfläche gebogen sein. Je nach der Gestaltung im einzelnen kann dabei die Haltefeder mit ihren verschiedenen Abschnitten unterschiedliche Funktionen, etwa zur Stoßsicherung des Ankers, ausüben.However, if the retaining pins are in the plane of the yoke leg, the first section of the retaining spring can either extend outward from the support on the armature, i.e. be bent away from the anchor into the yoke plane, or this first spring section can first be curved away from the anchor surface and then inwards, i.e. be bent towards the anchor in the plane of the yoke surface. Depending on the design in detail, the holding spring with its different sections can perform different functions, for example to protect the anchor from impact.

Bei einer besonderen Ausgestaltung des Relais ist an mindestens einem Haltesteg ein parallel zur Lagerkante verlaufender Quersteg angeformt, auf welchem der erste Abschnitt der Ankerhaltefeder aufliegt.In a special embodiment of the relay, a transverse web, which runs parallel to the bearing edge and on which the first section of the armature retaining spring rests, is formed on at least one holding web.

Mit dem Quersteg wird erreicht, daß die Ankerhaltefeder mit ihrem ersten Abschnitt im wesentlichen über ihre gesamte Breite aufliegt. Bei der Ankerbewegung kann sie sich somit nicht neben dem Haltesteg bzw. zwischen den Haltestegen durchbiegen, so daß auch keine Torsionsbeanspruchung auftritt. Die Ankerhaltefeder wird damit lediglich einer reinen Biegebeanspruchung im Knick zwischen dem ersten und dem zweiten Federabschnitt ausgesetzt, womit sie ohne Bruchgefahr auch eine hohe Zahl von Schaltspielen aushalten kann.With the crosspiece it is achieved that the armature retaining spring rests with its first section essentially over its entire width. When the armature moves, it cannot therefore bend next to the holding web or between the holding webs, so that no torsional stress occurs. The armature retaining spring is thus only subjected to a pure bending stress in the kink between the first and the second spring section, with which it can withstand a high number of switching cycles without the risk of breakage.

Entscheidend ist, daß die Ankerhaltefeder im wesentlichen über ihre ganze Breite auf dem Quersteg aufliegt. Die Befestigung kann wie vorher durch Verschweißen mit den Haltestegen seitlich von dem Quersteg erfolgen.It is crucial that the anchor retaining spring rests on the crossbar essentially over its entire width. As before, the attachment can be carried out by welding to the holding webs on the side of the crossbar.

Zweckmäßigerweise wird aber die Ankerhaltefeder mit einem oder zwei Schweißpunkten unmittelbar auf den Quersteg aufgeschweißt oder auch über eine vergleichbare Methode auf diesem befestigt.Expediently, however, the anchor retaining spring is welded directly onto the crossbar with one or two welding spots or is also fastened to the crossbar by a comparable method.

In einer vorteilhaften Ausführungsform besitzt das Joch in Verlängerung der beiden Seitenkanten angeformte Haltestege, welche über den Quersteg miteinander verbunden sind, so daß sie mit dem Quersteg und der gegenüberliegenden Lagerkante die Ankerhaltefeder und gegebenenfalls den Anker rahmenförmig umschließen. Zur Befestigung wird in diesem Fall der Anker mit der auf ihm befestigten und zur Außenseite abgebogenen Haltefeder durch den rahmenförmigen Schlitz zwischen den Haltestegen und dem Quersteg von unten her eingefädelt, und dann wird das abgebogene Ende der Ankerhaltefeder von oben auf den Quersteg aufgeschweißt.In an advantageous embodiment, the yoke has integrally formed retaining webs in the extension of the two side edges, which are connected to one another via the transverse web, so that they enclose the armature retaining spring and, if appropriate, the armature in a frame shape with the transverse web and the opposite bearing edge. In this case, the anchor is threaded with the retaining spring attached to it and bent to the outside through the frame-shaped slot between the retaining webs and the crossbar from below, and then the bent end of the anchor retaining spring is welded onto the crossbar from above.

In einer anderen bevorzugten Ausführungsform ist lediglich an einer Seite ein Haltezapfen vorgesehen, mit dem der Quersteg zusammen mit der Lagerkante einen einseitig offenen Schlitz bildet. In diesem Fall ergibt sich eine Vereinfachung der Montage, da der Anker mit der Ankerhaltefeder von der Seite leicht in diesen Schlitz eingesteckt und dann befestigt werden kann.In another preferred embodiment, a holding pin is provided only on one side, with which the crossbar forms a slot open on one side together with the bearing edge. In this case, the assembly is simplified, since the armature with the armature retaining spring can be easily inserted into this slot from the side and then fastened.

Weitere Abwandlungen sind möglich. So ist es beispielsweise auch denkbar, einen mittig angeordneten Haltesteg vorzusehen. In diesem Fall könnte der Quersteg vom Ende des Haltesteges T-förmig nach beiden Seiten angeformt sein, während die Ankerhaltefeder wie auch der Anker im Mittelbereich ausgenommen werden müßte.Further modifications are possible. For example, it is also conceivable to provide a retaining web arranged in the center. In this case, the crossbar could be formed in a T-shape on both sides from the end of the retaining web, while the anchor retaining spring and the anchor in the central region would have to be excluded.

Die Erfindung wird nachfolgend an Ausführungsbeispielen anhand der Zeichnung näher erläutert.The invention is explained in more detail below using exemplary embodiments with reference to the drawing.

Es zeigtIt shows

  • Fig. 1 ein erfindungsgemäß gestaltetes Relais in perspektivischer Darstellung, auf die Vorderseite mit dem Schaltraum gesehen,1 is a perspective view of a relay designed according to the invention, seen on the front with the control room,
  • Fig. 2 eine perspektivische Darstellung, von der Rückseite des Relais auf den zweiten Spulenflansch und den ersten Jochschenkel gesehen,2 is a perspective view, seen from the rear of the relay on the second coil flange and the first yoke leg,
  • Fig. 3 eine seitliche, teilweise geschnittene Ansicht des Relais von Fig. 1,3 is a side, partially sectioned view of the relay of FIG. 1,
  • Fig. 4 bis 7 eine ausschnittsweise Darstellung der Ankerbefestigung mit verschiedenen Abwandlungen gegenüber Fig. 1,4 to 7 is a partial representation the anchor attachment with different modifications compared to Fig. 1,
  • Fig. 8 einen Detailausschnitt aus dem in Fig. gezeigten Relais in perspektivischer Darstellung mit abgewandelter Ankerbefestigung,8 shows a detail from the relay shown in FIG. 1 in a perspective view with a modified anchor fastening,
  • Fig. 9 eine weiter abgewandelte Ausführungsform gegenüber Fig. 8 in perspektivischer Detaildarstellung von Joch, Anker und Ankerhaltefeder.FIG. 9 shows a further modified embodiment compared to FIG. 8 in a perspective detailed illustration of the yoke, armature and armature retaining spring.

Das in den Fig. 1 bis 3 dargestellte Relais zeigt einen Spulenkörper 1 als Träger oder Grundkörper, der eine Spulenwicklung 2 trägt und einen ersten und einen zweiten Spulenflansch 3 bzw. 4 zur Begrenzung des Wickelraumes aufweist. Beide Spulenflansche 3 und 4 besitzen an der Unterseite Ansätze 5 und 6, welche gemeinsam als Sockel die Einbauebene des Relais festlegen. Die Wicklungsachse verläuft parallel zur Einbauebene des Relais, und koaxial zur Wicklungsachse ist im Spulenkörper ein Kern 7 angeordnet, der im Bereich des ersten Spulenflansches ein verbreitertes Polstück 7a aufweist und im Bereich des zweiten Spulenflansches 4 mit einem winkelförmigen Joch 8 verbunden ist. Der erste Schenkel 8a des Joches verläuft senkrecht zur Einbauebene im Bereich des zweiten Spulenflansches 4 und wird an beiden Seiten von rippenförmigen Ansätzen 4a dieses Spulenflansches eingerahmt. Nach unten geht der erste Jochschenkel 8a in einen angeformten Anschlußstachel 9 über, der als Stromzuführung über das Joch für eine bewegliche Kontaktfeder 10 dient. Der zweite Jochschenkel 8b liegt parallel zur Einbauebene des Relais oberhalb der Spule. Er bildet an seinem freien Ende eine Lagerkante 8c für einen flachen Anker 11, der mit dem Kernpolstück 7a einen Arbeitsluftspalt 12 bildet.The relay shown in FIGS. 1 to 3 shows a coil body 1 as a carrier or base body, which carries a coil winding 2 and has a first and a second coil flange 3 or 4 for delimiting the winding space. Both coil flanges 3 and 4 have lugs 5 and 6 on the underside, which together define the installation level of the relay as a base. The winding axis runs parallel to the installation plane of the relay, and a core 7 is arranged coaxially to the winding axis in the coil former, which has a widened pole piece 7a in the area of the first coil flange and is connected to an angular yoke 8 in the area of the second coil flange 4. The first leg 8a of the yoke extends perpendicular to the installation plane in the area of the second coil flange 4 and is framed on both sides by rib-shaped projections 4a of this coil flange. At the bottom, the first yoke leg 8a merges into an integrally formed connecting pin 9, which serves as a power supply via the yoke for a movable contact spring 10. The second yoke leg 8b is parallel to the installation level of the relay above the coil. At its free end it forms a bearing edge 8c for a flat armature 11, which forms a working air gap 12 with the core pole piece 7a.

Der Anker ist über eine aus Blattmaterial gebildete Ankerhaltefeder bzw. Kontaktfeder 10 befestigt, wobei deren erster Abschnitt 10a an Haltezapfen 13 und 14 in Verlängerung des Jochschenkels 8b befestigt ist, der zweite Federschenkel 10b auf dem Anker 11 aufliegt und mit diesem verbunden ist und der dritte Federabschnitt 10c als eigentliche Kontaktfeder über das freie Ankerende hinaus in eine Kontaktkammer 15 ragt, die durch einen taschenförmigen Fortsatz 16 des Spulenkörperflansches 3 gebildet ist. In diesem Fortsatz sind vier paarweise einander gegenüberliegende Einsteckschlitze 17 für die Aufnahme von Gegenkontaktelementen 18 vorgesehen. Die Gegenkontaktelemente 18 sind jeweils in üblicher Weise mit Kontaktstükken 19 versehen, welche mit entsprechenden Kontaktstücken 20 der Kontaktfeder 10 zusammenwirken. Je nach Beschaltung kann dabei die Kontaktfeder als Mittelkontaktfeder oder als Kontaktbrücke ohne eigenen Anschluß dienen; im letzteren Fall wird also der Anschlußstachel 9 des Joches 8 nicht benötigt.The armature is fastened via an armature holding spring or contact spring 10 formed from sheet material, the first section 10a of which is fastened to holding pins 13 and 14 in the extension of the yoke leg 8b, the second spring leg 10b rests on the armature 11 and is connected to it, and the third Spring section 10c, as the actual contact spring, projects beyond the free armature end into a contact chamber 15, which is formed by a pocket-shaped extension 16 of the bobbin flange 3. In this extension, four mutually opposite insertion slots 17 are provided for receiving counter-contact elements 18. The counter-contact elements 18 are each provided in the usual way with contact pieces 19 which cooperate with corresponding contact pieces 20 of the contact spring 10. Depending on the wiring, the contact spring can serve as a center contact spring or as a contact bridge without its own connection; in the latter case, the connecting pin 9 of the yoke 8 is not required.

Der erste Abschnitt 10a der Ankerhaltefeder bzw. Kontaktfeder 10 ist im Bereich der Jochoberfläche von der Ankeroberfläche weg nach außen in die Ebene der Jochoberfläche abgewinkelt und bildet zwei seitliche Lappen 10d und 10e, die auf den Haltezapfen 13 und 14 aufliegen und an diesen befestigt sind. Die beiden Haltezapfen 13 und 14 sind dabei als Verlängerungen des Jochschenkels 8b in dessen Ebene ausgebildet, wobei zwischen dem Jochschenkel 8b und den beiden Haltezapfen 13 und 14 jeweils eine Einkerbung 21 zur Bildung einer Sollbiegestelle vorgesehen ist. Der Anker 11 ist in diesem Fall schmäler als der Jochschenkel 8b, so daß die beiden Haltezapfen 13 und 14 beiderseits am Anker vorbeigreifen können. Natürlich könnte der Anker auch die Breite des Jochschenkels 8b besitzen; er müßte in diesem Fall im Bereich der Haltezapfen 13 und 14 jeweils ausgenommen sein. Im letzteren Fall könnten die unter den Haltezapfen liegenden Seitenteile des Ankers als Stoßsicherung dienen (siehe Fig. 4). Bei der in Fig. 1 dargestellten Ausführungsform ist jedoch die Ankerhaltefeder 10 an beiden Seiten mit Anschlaglappen 10f und 10g versehen, die bei einer Stoßbewegung des Ankers in vertikaler Richtung an den Haltezapfen 13 bzw. 14 anstoßen.The first section 10a of the armature retaining spring or contact spring 10 is angled outward in the area of the yoke surface away from the armature surface into the plane of the yoke surface and forms two lateral tabs 10d and 10e which rest on the retaining pins 13 and 14 and are fastened to them. The two holding pins 13 and 14 are designed as extensions of the yoke leg 8b in its plane, a notch 21 being provided between the yoke leg 8b and the two holding pins 13 and 14 to form a predetermined bending point. In this case, the armature 11 is narrower than the yoke leg 8b, so that the two holding pins 13 and 14 can reach past the armature on both sides. Of course, the anchor could also have the width of the yoke leg 8b; in this case it would have to be excluded in the area of the holding pins 13 and 14. In the latter case, the side parts of the anchor lying under the holding pins could serve as shock protection (see FIG. 4). In the embodiment shown in FIG. 1, however, the armature retaining spring 10 is provided on both sides with stop tabs 10f and 10g which abut the retaining pins 13 and 14 in the event of an impact movement of the armature in the vertical direction.

Durch Biegen der Haltezapfen 13 und 14 kann die Rückstellkraft für den Anker eingestellt werden. Da sich die beiden Haltezapfen vor der Lagerkante 8c und vor dem Anker, also außerhalb des Eisenflußkreises befinden, tritt durch die Gestaltung der Haltezapfen kein Magnetflußverlust ein. Die Jochbreite wird vollständig für den Magnetkreis genutzt.The restoring force for the armature can be adjusted by bending the holding pins 13 and 14. Since the two holding pins are in front of the bearing edge 8c and in front of the armature, that is to say outside the iron flow circuit, there is no loss of magnetic flux due to the design of the holding pins. The yoke width is fully used for the magnetic circuit.

Das Relais wird schließlich mit einer Schutzkappe 22 versehen, welche das gesamte Relais mit Ausnahme der Einbauseite umschließt und sich mit Rastnasen 23 am Spulenkörper 1 hält. Beim Aufsetzen der Schutzkappe 22 wird der die beweglichen Teile enthaltende Schaltraum 24 mit der Kontaktkammer 15 vollständig vom Spulenraum getrennt, da eine umlaufende Rippe 25 sich sowohl oberhalb des Spulenflansches 3 auf den Jochschenkel 8b legt als auch in den Seitenbereichen mit dem Spulenkörperflansch 3 überlappende Abdichtbereiche bildet. Da die Haltezapfen 13 und 14 mit dem an ihnen befestigten Ankerhaltefederabschnitt 10a stirnseitig vor dem freien Jochende liegen, kann die Rippe 25 einen ebenen Kapillarspalt 26 mit dem Jochschenkel 8b annähernd oberhalb des Spulenkörperflansches 3 bilden. Weitere Kapillarspalte 27 werden zwischen der Rippe 25 und der Innenseite des Spulenkörperflansches 3 gebildet.The relay is finally provided with a protective cap 22, which encloses the entire relay with the exception of the installation side and is held on the bobbin 1 by means of locking lugs 23. When the protective cap 22 is put on, the switching space 24 containing the movable parts with the contact chamber 15 is completely separated from the coil space, since a circumferential rib 25 lies both above the coil flange 3 on the yoke leg 8b and also forms sealing areas overlapping with the coil body flange 3 in the side regions . Since the holding pins 13 and 14, with the armature holding spring section 10a attached to them, lie on the end face in front of the free yoke end, the rib 25 can form a planar capillary gap 26 with the yoke leg 8b approximately above the coil former flange 3. Additional capillary gaps 27 are formed between the rib 25 and the inside of the bobbin flange 3.

Zur Abdichtung wird das Relais mit der Anschlußseite nach oben vergossen, wobei der Spulenraum mit Vergußmasse gefüllt wird, die die Wicklung und das Joch einhüllt und auch in die Kapillarspalte 26 und 27 vordringt, jedoch nicht weiter in den Schaltraum 24 bzw. die Kontaktkammer 15 hineinläuft. Füllt man die Vergußmasse bis an den Rand 22a der Schutzkappe 22, so läuft diese auch über den Fortsatz 16 im Bereich der Anschlußseite und dichtet die Durchführungen für die Gegenkontaktelemente 18 ab. Gleichzeitig läuft sie in die Kapillarspalte 28, welche zwischen der Schutzkappe 22 und den Seitenwänden 16a bzw. 16b des Fortsatzes 16 gebildet sind. In diesen großflächigen Kapillarspalten verteilt sich das Gießharz, dringt aber nicht in den Kontaktraum bzw. den Schaltraum ein, so daß dieser sowohl gegenüber der Außenwelt als auch gegenüber der Spulenwicklung flüssigkeitsdicht abgeschlossen ist.For sealing, the relay is cast with the connection side facing upwards, the coil space being filled with casting compound which envelops the winding and the yoke and also penetrates into the capillary gaps 26 and 27, but does not run any further into the switching space 24 or the contact chamber 15 . If the potting compound is filled up to the edge 22a of the protective cap 22, it also runs over the extension 16 in the region of the connection side and seals the bushings for the mating contact elements 18. At the same time, it runs into the capillary gaps 28 which are formed between the protective cap 22 and the side walls 16a and 16b of the extension 16. The casting resin is distributed in these large capillary gaps, but does not penetrate into the contact space or the switching space, so that it is liquid-tightly sealed both from the outside world and from the coil winding.

Durch das Vergießen der Spulenwicklung mit Vergußmasse erhält diese nicht nur die Möglichkeit einer verbesserten Wärmeableitung, sondern auch eine erhöhte Spannungsfestigkeit durch die isolierende Vergußmasse zwischen Spulenwicklung und Joch. Mit zur Spannungsfestigkeit trägt auch bei, daß die Spulenanschlußstifte 29 mit ihren oberen Enden 29a ganz in den Spulenflansch 4 eingebettet sind und mit ihren aus dem Spulenflansch hervorstehenden Teilen 29b, an welche die Wicklungsenden angewickelt und angelötet werden, durch das Vergießen mit Gießharz ebenfalls isoliert werden, so daß lediglich die Anschlußenden 29c freiliegen.Potting the coil winding with potting compound not only gives it the option an improved heat dissipation, but also an increased dielectric strength due to the insulating sealing compound between the coil winding and yoke. Contributing to the dielectric strength also contributes to the fact that the coil connecting pins 29 are completely embedded in the coil flange 4 with their upper ends 29a and are also isolated by casting with casting resin with their parts 29b protruding from the coil flange, to which the winding ends are wound and soldered so that only the terminal ends 29c are exposed.

Die Fig. 4 bis 7 zeigen Abwandlungen der Ankerbefestigung in Detaildarstellungen, wobei jeweils nur der Jochschenkel 8b mit dem Anker, der Haltefeder und den Haltezapfen dargestellt ist.4 to 7 show modifications of the anchor fastening in detailed representations, only the yoke leg 8b with the anchor, the retaining spring and the retaining pin being shown in each case.

Bei der Ausführungsform gemäß Fig. 4 besitzt der Jochschenkel 8b die gleichen Haltezapfen 13 und 14 wie das Beispiel von Fig. 1. Dagegen ist eine Ankerhaltefeder 30 vorgesehen, welche im Gegensatz zu Fig. 1 in ihrem oberen Bereich 30a S-förmig zunächst vom Anker weg nach außen und dann nach innen in die Ebene der Jochschenkeloberfläche gebogen ist. Mit seitlich angeformten Lappen 30d und 30e ist die Haltefeder in gleicher Weise wie die Feder von Fig. 1 auf den Haltezapfen 13 und 14 befestigt. Der Anker 31 besitzt seitlich jeweils unterhalb der Haltezapfen 13 und 14 Schultern 31 a und 31 b, welche bei Stößen in vertikaler Richtung an den Haltezapfen 13 und 14 anschlagen und dadurch den Anker sichern.In the embodiment according to FIG. 4, the yoke leg 8b has the same retaining pins 13 and 14 as the example from FIG. 1. In contrast, an anchor retaining spring 30 is provided which, in contrast to FIG. 1, has an S-shaped upper portion 30a of the anchor is bent outwards and then inwards into the plane of the yoke leg surface. With laterally formed tabs 30d and 30e, the retaining spring is attached to the retaining pin 13 and 14 in the same way as the spring of FIG. 1. The anchor 31 has laterally below the holding pins 13 and 14 shoulders 31 a and 31 b, which abut the holding pins 13 and 14 in the event of impacts in the vertical direction and thereby secure the anchor.

In Fig. 5 ist eine weitere Abwandlung der Ankerhalterung gezeigt. Der Jochschenkel 8b besitzt in diesem Fall lediglich einen zentralen Haltezapfen 43, während der Anker 41 beiderseits dieses Haltezapfens 43 an der Lagerkante 8c anliegt. Die Ankerhaltefeder 40 ist in ihrem oberen Bereich 40a an beiden Seiten S-förmig zunächst vom Anker weg und dann zum Anker hin in die Ebene der Jochschenkeloberfläche gebogen, wobei sie mit einem Quersteg 40b auf dem Haltezapfen 43 aufliegt und an diesem befestigt ist. Durch Biegen des Haltezapfens 43 kann in diesem Fall die Ankerrückstellkraft eingestellt werden.5 shows a further modification of the anchor bracket. In this case, the yoke leg 8b only has a central retaining pin 43, while the armature 41 rests on both sides of this retaining pin 43 on the bearing edge 8c. In its upper region 40a, the armature retaining spring 40 is initially S-shaped on both sides away from the armature and then towards the armature in the plane of the yoke leg surface, wherein it rests on the holding pin 43 with a crossbar 40b and is fastened to it. In this case, the armature restoring force can be adjusted by bending the holding pin 43.

Auch in dem Beispiel von Fig. 6 besitzt der Jochschenkel 8b lediglich einen mittigen Haltezapfen 43, während die Haltefeder 50 mit ihrem oberen Bereich 50a vom Anker weg direkt in die Ebene der Jochschenkeloberfläche abgeknickt ist und mit ihrem Quersteg 50b auf dem Haltezapfen 43 aufliegt.Also in the example of FIG. 6, the yoke leg 8b only has a central holding pin 43, while the holding spring 50 is bent with its upper region 50a away from the anchor directly into the plane of the yoke leg surface and rests on the holding pin 43 with its transverse web 50b.

Fig. 7 zeigt eine weitere Modifizierung, wobei zwei seitliche Haltezapfen 63 und 64 als Fortsätze des Jochschenkels 8b abgekröpft ausgebildet sind und die Ankerhaltefeder 60 an deren oberen Abschnitt 60a über seitliche Lappen 60b und 60c tragen. Wie erwähnt, könnten die Haltezapfen auch noch in anderer Weise abgebogen oder gekröpft sein, beispielsweise senkrecht nach oben stehen.FIG. 7 shows a further modification, in which two lateral retaining pins 63 and 64 are formed as extensions of the yoke leg 8b and carry the anchor retaining spring 60 at their upper section 60a via lateral tabs 60b and 60c. As mentioned, the retaining pins could also be bent or cranked in another way, for example standing vertically upwards.

Die Fig. 8 zeigt als Ausschnitt aus einem Relais ein Joch 78 mit einem ersten Schenkel 78a und einem zweiten, flach über einer nicht dargestellten Spule liegenden Schenkel 78b. Dieser Jochschenkel 78b bildet eine Lagerkante 78c, an welcher ein flacher Anker 71 gelagert und mittels einer Ankerhaltefeder 70 befestigt ist. Diese Ankerhaltefeder 70 besitzt einen ersten Abschnitt 70a zur Befestigung auf dem Joch, einen mittleren Abschnitt 70b, an welchem sie mit dem Anker 71 verbunden ist, sowie einen als Kontaktfeder dienenden Abschnitt 70c. Zur Halterung des Ankers und der Ankerhaltefeder besitzt das Joch zwei seitlich in Verlängerung der Joch-Seitenkanten ausgebildete Haltestege 73 und 74, die am Ende mit einem Quersteg 75 verbunden sind. Zwischen der Lagerkante 78c, den Haltestegen 73 und 74 sowie dem Quersteg 75 wird somit ein rahmenförmig umschlossener Schlitz 72 gebildet, in welchem der Anker 71 mit der Ankerhaltefeder 70 liegt. Die Haltefeder 70 liegt mit ihrem Abschnitt 70a über die ganze Breite auf dem Quersteg 75 auf, so daß sie bei der Ankerbewegung nur auf Biegung beansprucht wird. Sie ist über zwei Schweißpunkte 76 auf dem Quersteg 75 befestigt.FIG. 8 shows a section of a relay, a yoke 78 with a first leg 78a and a second leg 78b lying flat over a coil, not shown. This yoke leg 78b forms a bearing edge 78c, on which a flat armature 71 is mounted and fastened by means of an armature retaining spring 70. This armature retaining spring 70 has a first section 70a for attachment to the yoke, a central section 70b to which it is connected to the armature 71, and a section 70c serving as a contact spring. To hold the armature and the armature retaining spring, the yoke has two retaining webs 73 and 74 which are formed laterally in the extension of the yoke side edges and which are connected at the end to a transverse web 75. A frame-shaped slot 72 is thus formed between the bearing edge 78c, the holding webs 73 and 74 and the transverse web 75, in which the armature 71 with the armature holding spring 70 lies. The holding spring 70 lies with its section 70a over the entire width on the crosspiece 75, so that it is only subjected to bending during the armature movement. It is attached to the crossbar 75 via two welding spots 76.

Fig. 9 zeigt eine abgewandelte Ausführungsform, wobei das Joch 88 liegend dargestellt ist. Damit soll lediglich gezeigt werden, daß die erfindungsgemäße Ausgestaltung der Ankerhalterung auch bei einem in einem Gehäuse liegenden Magnetsystem anwendbar ist. Das Joch 88 mit seinem ersten Schenkel 88a und seinem zweiten Schenkel 88b besitzt eine nicht weiter sichbare Lagerkante 88c für einen Anker 81 sowie einen einseitig (an seiner Unterseite) als Verlängerung ausgebildeten Haltesteg 83 mit einem parallel zur Lagerkante verlaufenden Quersteg 85. Die Ankerhaltefeder 80 ist mit ihrem ersten Abschnitt 80a am Quersteg 85 verschweißt, mit ihrem mittleren Abschnitt 80b mit dem Anker 81 verbunden und mit ihrem Endabschnitt 80c als Kontaktfeder mit einem Kontaktstück ausgestattet. Der Haltesteg 83 bildet mit dem Quersteg 85 und der Lagerkante 88c einen seitlich bzw. nach oben offenen Schlitz 82, in welchen der Anker 81 mit der Haltefeder 80 in einfacher Weise eingesetzt werden kann. Ist das Magnetsystem in der dargestellten Weise liegend angeordnet, so können Anker und Ankerhaltefeder von oben her in den Schlitz 82 eingesteckt werden.Fig. 9 shows a modified embodiment, the yoke 88 is shown lying. This is only to show that the design of the armature holder according to the invention can also be used with a magnet system located in a housing. The yoke 88 with its first leg 88a and its second leg 88b has a bearing edge 88c for an armature 81 which is not visible any further, and a holding web 83 which is formed on one side (on its underside) as an extension and has a transverse web 85 running parallel to the bearing edge welded to the crossbar 85 with its first section 80a, connected to the armature 81 with its central section 80b and equipped with a contact piece as a contact spring with its end section 80c. The holding web 83 forms with the cross bar 85 and the bearing edge 88c a laterally or upwardly open slot 82, in which the armature 81 with the holding spring 80 can be inserted in a simple manner. If the magnet system is arranged horizontally in the manner shown, the armature and armature retaining spring can be inserted into the slot 82 from above.

Bei beiden Ausführungsformen der Fig. 8 und 9 ist eine einfache Justierung der Ankerrückstellkraft durch Biegen an den Haltestegen 73 und 74 bzw. 83 möglich. Der Quersteg 75 bzw. 85 wird dabei in Richtung des Doppelpfeiles 77 bzw. 87 nach der einen oder anderen Seite ausgelenkt.In both embodiments of FIGS. 8 and 9, simple adjustment of the armature restoring force is possible by bending on the holding webs 73 and 74 or 83. The crosspiece 75 or 85 is deflected in the direction of the double arrow 77 or 87 to one side or the other.

Claims (10)

1. Electromagnetic relay
- having a coil former (1), which bears a winding between two flanges (3, 4),
- having an angular yoke (8), the first limb (8a) of which runs along the second coil former flange (4) perpendicularly to the coil axis and is coupled to a core (7) running inside the coil, and the second limb (8b) of which runs parallel to the coil axis over the winding (2), the second yoke limb (8b) having at its free end at least one holding pin (13, 14; 43; 63, 64) projecting beyond the bearing edge,
- having a plate-shaped armature (11; 31; 41), which is mounted on the bearing edge (8c) at the free end of the second yoke limb (8b) and forms at its face in front of the first coil flange (3) a working air gap with the free core end (7a), and
- having an armature retaining spring (10; 30; 40; 50;
60), which is fastened by a first section (10a; 30a; 40a; 50a; 60a) to the retaining pin of the yoke (8), is fastened by a second section (10b), resting on the armature, to the latter and interacts by a third section (10c) as contact spring with at least one counter-contact element (17), characterized in that the armature retaining spring (10; 30; 40; 50; 60) rests with its first section (10a; 30a; 40a; 50a; 60a) in the region at the face in font of the bearing edge (8c) on the retaining pin of pins (13, 14; 43; 63, 64) and is fastened thereto, in that the coil former (1) serves as a basic element, in that a pocket-shaped contact space (15, 16), in which the counter-contact elements (17) are anchored, is formed onto the first flange (3) of the coil former and in that a protective cap (22), slipped over the coil former (1), has a rib (25) running around the inside, which rib bears against the upper side of the second yoke limb (8b) in the region of the first coil former flange (3) and against the two side regions of this coil flange (3), forming a continuous capillary gap.
2. Relay according to Claim 1, characterized in that the retaining pins (13, 14; 43; 63, 64) are in each case provided with a cross-sectional weakening (21) for forming a predetermined bending point.
3. Relay according to Claim 1 or 2, characterized in that the retaining pins (13, 14; 43; 63, 64) in each case lie in the plane of the second yoke limb (8b) as an extension of the latter.
4. Relay according to Claim 3, characterized in that the protective cap (22) forms with the side faces (16a, 16b) of the coil former continuation (16) forming the contact chamber an encircling capillag gap.
5. Relay according to Claims 3 or 4, characterized in that the protective cap is filled with casting compound in the region of the coil winding and on the connection side of the contact chamber, the capillag gaps (26, 27, 28) between the protective cap and the coil former (1) or the second yoke limb (8b) being sealed off.
6. Relay according to Claim 1, characterized n that a cross-piece (75; 85), which runs parallel to the bearing edge (78c; 88c) and on which the first section (70a; 80a) of the armature retaining spring (70; 80) rests, is formed onto at least one retaining piece (73, 74; 83).
7. Relay according to Claim 6, characterized in that the armature retaining spring (70; SO) is fastened, in particular welded, directly on the cross-piece.
8. Relay according to Claim 6 or 7, characterized in that retaining pieces (73, 74) formed onto both side edges of the yoke end (78b) are connected by means of the cross-piece (75) and, together with the bearing edge (78c), enclose in the form of a frame the armature retaining spring (70) or the armature (71) inserted between them.
9. Relay according to Claim 6 or 7, characterized in that a retaining piece (83) provided on the yoke (88b) on one side forms with the formed-on cross-piece (85) and the bearing edge (88c) a slot (82) open on one side.
10. Relay according to Claim 6 or 7, characterized in that a retaining piece formed centrally onto the yoke bears at its free end a cross-piece which with it forms a T-shape.
EP86110873A 1985-08-09 1986-08-06 Electromagnetic relay Expired - Lifetime EP0214469B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86110873T ATE58800T1 (en) 1985-08-09 1986-08-06 ELECTROMAGNETIC RELAY.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19853528715 DE3528715A1 (en) 1985-08-09 1985-08-09 Electromagnetic relay
DE3528715 1985-08-09
DE3543092 1985-12-05
DE19853543092 DE3543092A1 (en) 1985-12-05 1985-12-05 Electromagnetic relay

Publications (2)

Publication Number Publication Date
EP0214469A1 EP0214469A1 (en) 1987-03-18
EP0214469B1 true EP0214469B1 (en) 1990-11-28

Family

ID=25834917

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86110873A Expired - Lifetime EP0214469B1 (en) 1985-08-09 1986-08-06 Electromagnetic relay

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US (1) US4684910A (en)
EP (1) EP0214469B1 (en)
DE (1) DE3675852D1 (en)

Families Citing this family (10)

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Publication number Priority date Publication date Assignee Title
US4740771A (en) * 1986-08-26 1988-04-26 Matsushita Electric Works, Ltd. Armature biasing means in an electromagnetic relay
ES2040826T3 (en) * 1988-12-23 1993-11-01 Siemens Aktiengesellschaft ELECTROMAGNETIC RELAY.
DE9015406U1 (en) * 1990-11-09 1992-03-05 Siemens AG, 8000 München Electromagnetic relay with contact spring attached to the armature
US5173675A (en) * 1991-12-31 1992-12-22 United Technologies Automotive, Inc. Mounting for an electromagnetic relay armature
US5497860A (en) * 1994-08-15 1996-03-12 Venturedyne Limited Electromagnetic brake with improved magnet structure
DE4429552A1 (en) * 1994-08-19 1996-02-22 Siemens Ag Anchor bracket for an electromagnetic relay
JP2002100275A (en) * 2000-07-18 2002-04-05 Nagano Fujitsu Component Kk Electromagnetic relay
ES2240617T3 (en) * 2001-08-10 2005-10-16 Tyco Electronics Amp Gmbh SWITCH RELAY WITH IMPROVED ARMOR SPRING.
CN103337415A (en) * 2013-06-14 2013-10-02 东莞市三友联众电器有限公司 Relay contact system
DE102015201703A1 (en) * 2015-01-30 2016-08-04 Te Connectivity Germany Gmbh Low-noise switching electrical switching device

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Publication number Priority date Publication date Assignee Title
FR1512569A (en) * 1966-12-29 1968-02-09 Advanced relay
FR2094246A5 (en) * 1970-06-15 1972-02-04 Cibie Projecteurs
DE2231525C2 (en) * 1972-06-28 1978-11-30 Swf-Spezialfabrik Fuer Autozubehoer Gustav Rau Gmbh, 7120 Bietigheim Small relays, in particular for printed circuit boards
DE2558065C3 (en) * 1975-12-22 1981-01-15 Siemens Ag, 1000 Berlin Und 8000 Muenchen Armature bearing for an electromagnetic relay
DE2943440C2 (en) * 1979-10-26 1984-09-06 Nixdorf Computer Ag, 4790 Paderborn Hinged armature magnet
DE3232679C2 (en) * 1981-09-04 1985-06-05 Siemens AG, 1000 Berlin und 8000 München Electromagnetic switching relay for high current loads
DE8235283U1 (en) * 1982-12-15 1983-06-09 Siemens AG, 1000 Berlin und 8000 München Electromagnetic relay
FR2541815B1 (en) * 1983-02-28 1987-01-16 Matsushita Electric Works Ltd ELECTROMAGNETIC RELAY WITH ARTICULATED FRAME
DE3308821C2 (en) * 1983-03-12 1985-03-07 Standard Elektrik Lorenz Ag, 7000 Stuttgart Electromagnetic relay

Also Published As

Publication number Publication date
EP0214469A1 (en) 1987-03-18
US4684910A (en) 1987-08-04
DE3675852D1 (en) 1991-01-10

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