EP0897586B1 - Electromagnetic relay - Google Patents

Electromagnetic relay Download PDF

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Publication number
EP0897586B1
EP0897586B1 EP97925825A EP97925825A EP0897586B1 EP 0897586 B1 EP0897586 B1 EP 0897586B1 EP 97925825 A EP97925825 A EP 97925825A EP 97925825 A EP97925825 A EP 97925825A EP 0897586 B1 EP0897586 B1 EP 0897586B1
Authority
EP
European Patent Office
Prior art keywords
contact
contact carrier
carrier section
housing
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 - Lifetime
Application number
EP97925825A
Other languages
German (de)
French (fr)
Other versions
EP0897586A1 (en
Inventor
Alfred Heinzl
Heinz Stadler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
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Siemens AG
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Filing date
Publication date
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Publication of EP0897586A1 publication Critical patent/EP0897586A1/en
Application granted granted Critical
Publication of EP0897586B1 publication Critical patent/EP0897586B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/023—Details concerning sealing, e.g. sealing casing with resin
    • 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
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H2011/0075—Apparatus or processes specially adapted for the manufacture of electric switches calibrating mechanical switching properties, e.g. "snap or switch moment", by mechanically deforming a part of the switch, e.g. elongating a blade spring by puncturing it with a laser
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2272—Polarised relays comprising rockable armature, rocking movement around central axis parallel to the main plane of the armature
    • H01H51/2281—Contacts rigidly combined with armature
    • H01H51/229—Blade-spring contacts alongside armature

Definitions

  • Such systems with fixed contact elements arranged in the base area are used for example in miniature relays, the contact springs directly with a rocker armature are connected, which in turn is preferably by a polarized magnet system is operated. Because with such relays for low current applications also very small contact distances are provided, they must also be used during production can be set with very narrow tolerances.
  • EP-A-0 423 834 is a relay of the type mentioned known in which the fixed contact elements in such a base are anchored that the contact carrier sections initially Stand out freely on the front of the base. To this They are in the course of manufacturing for attacking Adjustment tools accessible. However, it is with the one there Relay then required when assembling the Free base ends thanks to additional cap-like base parts cover, so that the so completed base together can form a closed housing with a cap. This Housing can then in a known manner with potting compound or curable adhesive to be sealed.
  • the aim of the invention is to provide a relay of the type mentioned Specify the type and a process for its manufacture, at after the assembly of all construction parts, after after closing the housing and after sealing all intermediate construction and housing parts existing column Adjustment is possible.
  • this is the case with a relay of the type mentioned Art achieved in that the bottom plate in each case Area below each contact carrier section one has window-shaped recess open to the outside. On in this way the contact carrier section can pass through the recess even after assembling the relay Adjustment are bent, preferably a predetermined bending point near the clamping of the contact carrier section is provided.
  • the Contact carrier section also pivotable about torsion bars be hung in the middle between two free ends.
  • the fixed contact is caused by torsion of this suspension optionally moved up or down, depending on the to which end of the contact carrier section an adjustment pin is scheduled.
  • the shape of the recess is expediently more or less exactly on the circumferential contour of the respective contact carrier section adapted so that this contact carrier section largely covers the recess on the inside of the housing. On this way the recess can be adjusted with a Drops of an adhesive can be sealed without this Glue runs into the interior of the housing.
  • the inventive method for producing such Relay is that after assembling the electromagnetic system on the base provided with the contact element and after the known closing and sealing of the housing - With the exception of the recesses below the contact carrier sections - The respective contact carrier section for adjustment a predetermined contact distance to one associated movable contact element by means of a the recess of the base engaging adjustment tool its angular position deformed relative to the clamping point becomes.
  • This adjustment is primarily carried out using an adjusting pin, the contact carrier section clamped on one side pushes and deforms towards the inside of the housing. It in this case, the tolerances in production Expediently chosen so that the contact carrier sections are slightly bent outwards. Basically is but not to be ruled out that with suitable tools too subsequently a bend in the contact carrier sections is made to the outside. This can be done either by hook-shaped Adjustment tools happen at accordingly large dimensioning of the recess on the contact carrier section attack and pull it outwards, or it could too with suction forces on the outside of the contact carrier section attacking adjustment tools are used. In the Suspension of the contact carrier section via torsion bars adjustment in two directions is possible anyway.
  • the adjustment process occurs at a time when the relay is almost completed is. That means that the relay is already fully assembled, optionally also magnetized, cast and annealed is. So all relaxation and tension processes are already completed.
  • the only one that is subsequently necessary Sealing the recesses can be done with the anyway necessary Sealing ventilation holes to be made; by filling in an adhesive, for example a UV adhesive, the adjusted contact carrier sections are also in the cutouts finally fixed.
  • the polarized relay shown in the drawing has a structure known per se.
  • a base 1 forms a base plate 2, which defines a base level of the relay, as well partially surrounding side walls 3.
  • In the base are out stamped fixed contact elements 4 embedded on a common circuit board, the connecting lugs emerging from the underside of the base plate 5 form. These form fixed contact elements at their ends 4 each contact carrier sections 6, each wear a fixed contact 7.
  • each contact carrier section 6 is in the Base plate provided a recess 8 over which the respective contact carrier section 6 extends cantilevered.
  • a recess 8 over which the respective contact carrier section 6 extends cantilevered.
  • Each contact element has in the vicinity of its clamping point 6 also a notch 9, which is a predetermined bending point forms.
  • a cap 10 forms a closed together with the base 1 Housing, in which a magnet system in the upper area with a coil 11 on a bobbin 12, a rod-shaped Core 13 and two yokes 14 and 15 is arranged. Between the free ends of the yokes is a rod-shaped, three-pole permanent magnet 16 arranged, at the center pole N An elongated armature 18 is supported via a bearing plate 17 is. Two are on the anchor 18 via a plastic carrier 19 Center contact springs 20 attached, each at two spring ends Wear 21 movable contacts 22. Each of the moveable Contacts 22 lies above a fixed contact 7 and is corresponding the rocking movement of the armature 18 optionally with this interconnected.
  • the two contact springs each have laterally bent connecting lugs 23, which are only indicated in FIG. 1 are and in a manner not shown in detail as storage belts serve for the anchor.
  • the structure and the function of such a relay are generally known and need not to be explained further here.
  • the armature 18 is first opened the base 1 arranged and attached, then the magnet system put on and connected to the base.
  • the cap 10 closes the housing and is sealed in a known manner; the coil can also be in the housing, for example be shed.
  • the contact carrier section 6 is arranged in the base plate 2 exactly parallel to the base plane.
  • the edge of the recess 8 is designed such that the contact carrier section 6 can be pivoted about the predetermined bending point formed by the notch 9 both downwards to the outside of the base according to FIG. 6 and upwards to the inside of the base according to FIG. Since it is easier to press the adjusting pins 24 shown in FIG. 1 only from the outside onto the contact carrier sections and thus bend them to the inside according to FIG. 7, it may be advisable to readjust the contact carrier sections 6 a little before assembling the relay according to FIG bend outside so that the final adjustment after assembly must be made in a bend to the inside.
  • the adjustment process run approximately in the following way: if the permanent magnet 16 of the polarized system is magnetized, the Anchor not in the middle position shown, but he is at one end on a yoke, for example on the Yoke 14, on.
  • the contact spring 21 should the movable contact 22 on the opposite side, So in Figure 1 on the right side, at the fixed contact 7th issue. If this is not the case, use the adjustment pin 24 the contact carrier section 6 pressed so far, until contact is made with the movable contact 22. This can be measured via the contact connections. After that a path corresponding to the minimum overrun is additionally adjusted. This ensures the lower limit of burn-off safety. Then the relay is switched so that the opposite contact side also in the same way can be adjusted.
  • a response value can also be set in each case by bending the contact carrier sections 6.
  • the relay is energized with a ramping up or down value until it switches. If the excitation value measured at the time of response is not in a target range, the restoring force on the relevant side can be increased by adjusting the contact carrier sections, so that the relay switches over when the excitation is lower or correspondingly higher.
  • Readjustments can also cause spreading between the two contact springs 21 are compensated individually. If for example by spreading the contact springs Contact distances a1 and a2 are different in FIG. 9, what was determined by electrical measurement of the closing time can be made by different re-bending the contact carrier sections 6 are the same on both sides Contact distance can be established.
  • FIGS. 10 to 12 show a further embodiment of a Contact carrier section analogous to Figures 5 to 7 shown.
  • a contact carrier section 28 cut free with both ends over the recess 8 and in its center on both sides via torsion bars 29 to the fixed contact element 4 connected.
  • In the drawing is a cut shown by one of the torsion bars 29. So with this Embodiment with the adjustment pin 24 optionally on the one end below the fixed contact 7 according to Figure 11 or are pressed onto the other end according to FIG. Accordingly the fixed contact is moved up or down, wherein the torsion bars 29 are permanently deformed. The recess 8 can then in the same way as shown in the figure 8 are shed.
  • FIG. 13 shows a contact carrier section in a further modification 30 on which the fixed contact 7 is not immediately but is attached via a contact spring 31. Furthermore this contact carrier section 30 is adjustable in the same way like the contact carrier section 6 according to FIGS. 1 till 8.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Contacts (AREA)

Abstract

A relay has a base with a bottom plate (2) which is part of a closed housing. Fixed contact elements (4) are anchored in the base. The fixed contact (7) carrying sections (6) of the contact elements (4) are arranged on the bottom plate, parallel thereto. An outwardly open recess (8) is provided in the bottom plate below each contact carrying section (6). The contact carrying sections (6) are cantilevered over said recesses. These recesses make it possible to adjust the contact carrying sections (6) even after the housing is sealed; they may be subsequently filled with glue.

Description

Die Erfindung betrifft ein elektromagnetisches Relais

  • mit einem Sockel aus Isolierstoff, der mit einer Bodenplatte eine Grundebene definiert und der Teil eines geschlossenen Gehäuses ist,
  • mit in dem Sockel verankerten Festkontaktelementen, die jeweils eine zur Außenseite des Gehäuses geführte Anschlußfahne und einen in dem Gehäuseinneren jeweils einseitig eingespannten, sich freitragend parallel zur Grundebene erstreckenden Kontaktträgerabschnitt aufweisen,
  • mit mindestens einer mit jeweils einem Kontaktträgerabschnitt zusammenwirkenden Kontaktfeder, die ebenfalls mit einer zur Gehäuseaußenseite geführten Anschlußfahne verbunden ist, und
  • mit einem oberhalb des Sockels in dem Gehäuse angeordneten Elektromagnetsystem mit Spule, Kern und Anker zur Betätigung der mindestens einen beweglichen Kontaktfeder.
The invention relates to an electromagnetic relay
  • with a base made of insulating material, which defines a base level with a base plate and is part of a closed housing,
  • with fixed contact elements anchored in the base, each of which has a connecting lug which leads to the outside of the housing and a contact carrier section which is cantilevered in the interior of the housing and extends cantilevered parallel to the base plane,
  • with at least one contact spring which interacts with a respective contact carrier section and is likewise connected to a connecting lug led to the outside of the housing, and
  • with an electromagnet system arranged above the base in the housing with a coil, core and armature for actuating the at least one movable contact spring.

Derartige Systeme mit im Sockelbereich angeordneten Festkontaktelementen werden beispielsweise bei Miniaturrelais angewendet, wobei die Kontaktfedern unmittelbar mit einem Wippanker verbunden sind, der seinerseits durch ein vorzugsweise polarisiertes Magnetsystem betätigt wird. Da bei solchen Relais für Schwachstromanwendungen auch sehr geringe Kontaktabstände vorgesehen sind, müssen diese auch bei der Fertigung mit sehr engen Toleranzen eingestellt werden. Such systems with fixed contact elements arranged in the base area are used for example in miniature relays, the contact springs directly with a rocker armature are connected, which in turn is preferably by a polarized magnet system is operated. Because with such relays for low current applications also very small contact distances are provided, they must also be used during production can be set with very narrow tolerances.

So ist aus der EP-A-0 423 834 ein Relais der genannten Art bekannt, bei dem die Festkontaktelemente in einem Sockel derart verankert sind, daß die Kontaktträgerabschnitte zunächst frei an den Stirnseiten des Sockels hervortreten. Auf diese Weise sind sie im Verlauf der Fertigung für den Angriff von Justierwerkzeugen zugänglich. Allerdings ist es bei dem dortigen Relais dann erforderlich, beim weiteren Zusammenbau die freigesparten Sockelenden durch zusätzliche kappenartige Sokkelteile abzudecken, damit der so ergänzte Sockel zusammen mit einer Kappe ein geschlossenes Gehäuse bilden kann. Dieses Gehäuse kann dann in bekannter Weise mit Vergußmasse bzw. einem aushärtbaren Kleber abgedichtet werden.EP-A-0 423 834 is a relay of the type mentioned known in which the fixed contact elements in such a base are anchored that the contact carrier sections initially Stand out freely on the front of the base. To this They are in the course of manufacturing for attacking Adjustment tools accessible. However, it is with the one there Relay then required when assembling the Free base ends thanks to additional cap-like base parts cover, so that the so completed base together can form a closed housing with a cap. This Housing can then in a known manner with potting compound or curable adhesive to be sealed.

Es hat sich jedoch gezeigt, daß bei Relais der oben genannten Art insbesondere auch nach dem Verschluß des Gehäuses Veränderungen auftreten, die größer sein können als die ursprünglich vorhandenen und durch die erwähnte Justierung bei der Fertigung behebbaren Abweichungen. Ursachen für diese Veränderungen sind Verspannungen und Relaxationen, die bei Tempervorgängen, also insbesondere beim Vergießen und beim Aushärten der Vergußmasse, auftreten und die bei polarisierten Relais unter Einwirkung der Magnetkraft des Dauermagneten auf den Anker noch verstärkt werden. Die entsprechenden Entspannungsvorgänge müssen während des Fertigungsprozesses erfolgen, damit im späteren Einsatz des Relais keine nachträglichen Kennwertänderungen auftreten.However, it has been shown that the relay mentioned above Kind especially after the closure of the housing changes occur that can be larger than that originally existing and by the adjustment mentioned at the Manufacturing recoverable deviations. Causes of these changes are tensions and relaxations that occur during tempering processes, in particular when casting and curing the potting compound, and occur with polarized relays under the influence of the magnetic force of the permanent magnet the anchor will be reinforced. The corresponding relaxation processes must be done during the manufacturing process, so that there are no retrofits in the later use of the relay Characteristic changes occur.

Ziel der Erfindung ist es, ein Relais der eingangs genannten Art und ein Verfahren zu dessen Herstellung anzugeben, bei dem noch nach dem Zusammenbau aller Konstruktionsteile, nach dem Schließen des Gehäuses und nach der Abdichtung aller Zwischenkonstruktions- und Gehäuseteilen bestehenden Spalte eine Justierung möglich ist.The aim of the invention is to provide a relay of the type mentioned Specify the type and a process for its manufacture, at after the assembly of all construction parts, after after closing the housing and after sealing all intermediate construction and housing parts existing column Adjustment is possible.

Erfindungsgemäß wird dies bei einem Relais der eingangs genannten Art dadurch erreicht, daß die Bodenplatte jeweils im Bereich unterhalb eines jeden Kontaktträgerabschnittes eine zur Außenseite offene fensterförmige Aussparung aufweist. Auf diese Weise kann der Kontaktträgerabschnitt durch die Aussparung hindurch auch nach dem Zusammenbau des Relais noch zur Justierung gebogen werden, wobei vorzugsweise eine Sollbiegestelle in der Nähe der Einspannung des Kontaktträgerabschnittes vorgesehen ist.According to the invention, this is the case with a relay of the type mentioned Art achieved in that the bottom plate in each case Area below each contact carrier section one has window-shaped recess open to the outside. On in this way the contact carrier section can pass through the recess even after assembling the relay Adjustment are bent, preferably a predetermined bending point near the clamping of the contact carrier section is provided.

Anstelle der Anbindung über eine Sollbiegestelle kann der Kontaktträgerabschnitt auch über Torsionsstege schwenkbar etwa in der Mitte zwischen zwei freien Enden aufgehängt sein. In diesem Fall wird der Festkontakt durch Torsion dieser Aufhängung wahlweise nach oben oder unten bewegt, je nach dem, an welches Ende des Kontaktträgerabschnittes ein Justierstift angesetzt wird.Instead of the connection via a predetermined bending point, the Contact carrier section also pivotable about torsion bars be hung in the middle between two free ends. In this case the fixed contact is caused by torsion of this suspension optionally moved up or down, depending on the to which end of the contact carrier section an adjustment pin is scheduled.

Zweckmäßigerweise ist die Form der Aussparung mehr oder weniger genau an die Umfangskontur des jeweiligen Kontaktträgerabschnittes angepaßt, so daß dieser Kontaktträgerabschnitt die Aussparung zur Gehäuseinnenseite weitgehend abdeckt. Auf diese Weise kann die Aussparung nach der Justierung mit einem Tropfen eines Klebers abgedichtet werden, ohne daß dieser Kleber in das Gehäuseinnere verläuft.The shape of the recess is expediently more or less exactly on the circumferential contour of the respective contact carrier section adapted so that this contact carrier section largely covers the recess on the inside of the housing. On this way the recess can be adjusted with a Drops of an adhesive can be sealed without this Glue runs into the interior of the housing.

Das erfindungsgemäße Verfahren zur Herstellung eines derartigen Relais besteht darin, daß nach der Montage des Elektromagnetsystems auf dem mit dem Kontaktelement versehenen Sockel und nach dem bekannten Verschließen und Abdichten des Gehäuses - mit Ausnahme der Aussparungen unterhalb der Kontaktträgerabschnitte - der jeweilige Kontaktträgerabschnitt zur Einstellung eines vorgegebenen Kontaktabstandes gegenüber einem zugehörigen beweglichen Kontaktelement mittels eines durch die Aussparung des Sockels greifenden Justierwerkzeuges in seiner Winkelstellung gegenüber der Einspannstelle deformiert wird.The inventive method for producing such Relay is that after assembling the electromagnetic system on the base provided with the contact element and after the known closing and sealing of the housing - With the exception of the recesses below the contact carrier sections - The respective contact carrier section for adjustment a predetermined contact distance to one associated movable contact element by means of a the recess of the base engaging adjustment tool its angular position deformed relative to the clamping point becomes.

In erster Linie erfolgt diese Justierung mittels eines Einstellstiftes, der den einseitig eingespannten Kontaktträgerabschnitt zum Gehäuseinneren hin drückt und deformiert. Es werden also in diesem Fall bei der Fertigung die Toleranzen zweckmäßigerweise so gewählt, daß die Kontaktträgerabschnitte etwas zur Außenseite hin vorgebogen sind. Grundsätzlich ist aber nicht auszuschließen, daß mit geeigneten Werkzeugen auch nachträglich noch eine Biegung der Kontaktträgerabschnitte nach außen hin vorgenommen wird. Dies kann entweder durch hakenförmige Justierwerkzeuge geschehen, die bei entsprechend großer Bemessung der Aussparung an dem Kontaktträgerabschnitt angreifen und diesen nach außen ziehen, oder es könnten auch mit Saugkräften an der Außenseite des Kontaktträgerabschnittes angreifende Justierwerkzeuge verwendet werden. Bei der Aufhängung des Kontaktträgerabschnittes über Torsionsstege ist ohnehin eine Justierung nach zwei Richtungen möglich.This adjustment is primarily carried out using an adjusting pin, the contact carrier section clamped on one side pushes and deforms towards the inside of the housing. It in this case, the tolerances in production Expediently chosen so that the contact carrier sections are slightly bent outwards. Basically is but not to be ruled out that with suitable tools too subsequently a bend in the contact carrier sections is made to the outside. This can be done either by hook-shaped Adjustment tools happen at accordingly large dimensioning of the recess on the contact carrier section attack and pull it outwards, or it could too with suction forces on the outside of the contact carrier section attacking adjustment tools are used. In the Suspension of the contact carrier section via torsion bars adjustment in two directions is possible anyway.

Wesentlich bei der Erfindung ist, daß der Einstellvorgang zu einem Zeitpunkt erfolgt, zu dem das Relais nahezu fertiggestellt ist. Das heißt, daß das Relais bereits komplett montiert, gegebenenfalls auch magnetisiert, vergossen und getempert ist. Alle Relaxations- und Verspannungsvorgänge sind also bereits abgeschlossen. Die nachträglich allein noch notwendige Abdichtung der Aussparungen kann mit dem ohnehin notwendigen Abdichten von Lüftungslöchern vorgenommen werden; durch das Einfüllen eines Klebers, beispielsweise eines UV-Klebers, in die Aussparungen werden auch die justierten Kontaktträgerabschnitte endgültig fixiert.It is essential in the invention that the adjustment process occurs at a time when the relay is almost completed is. That means that the relay is already fully assembled, optionally also magnetized, cast and annealed is. So all relaxation and tension processes are already completed. The only one that is subsequently necessary Sealing the recesses can be done with the anyway necessary Sealing ventilation holes to be made; by filling in an adhesive, for example a UV adhesive, the adjusted contact carrier sections are also in the cutouts finally fixed.

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

  • Figur 1 ein erfindungsgemäß gestaltetes polarisiertes Miniaturrelais in einem Längsschnitt,
  • Figur 2 eine stirnseitige Ansicht auf das Relais von Figur 1 mit aufgeschnittener Kappe und teilweise geschnittenen Teilen,
  • Figur 3 eine Ansicht auf die Sockeloberseite des Relais von Figur 1,
  • Figur 4 eine Ansicht auf die Sockelunterseite des Relais von Figur 1,
  • Figuren 5 bis 8 eine Detailansicht auf einen Kontaktträgerabschnitt des Relais von Figur 1 in verschiedenen Fertigungs-bzw. Justierphasen,
  • Figur 9 eine Detailansicht des Ankers und der Kontaktanordnung aus Figur 2 mit einem zusätzlichen Prüfstift,
  • Figuren 10 bis 12 eine Detailansicht auf einen Kontaktträgerabschnitt mit mittiger Aufhängung über Torsionsstege in verschiedenen Justierphasen und
  • Figur 13 eine Detailansicht eines Kontaktträgerabschnittes mit zusätzlich befestigter Kontaktfeder.
    • The invention is explained in more detail using an exemplary embodiment with reference to the drawing. It shows
  • FIG. 1 shows a polarized miniature relay designed according to the invention in a longitudinal section,
  • FIG. 2 shows an end view of the relay from FIG. 1 with the cap cut open and parts partially cut,
  • FIG. 3 shows a view of the top of the base of the relay from FIG. 1,
  • FIG. 4 shows a view of the underside of the base of the relay from FIG. 1,
  • FIGS. 5 to 8 show a detailed view of a contact carrier section of the relay from FIG. 1 in different manufacturing or Adjustment phases,
  • FIG. 9 shows a detailed view of the armature and the contact arrangement from FIG. 2 with an additional test pin,
  • FIGS. 10 to 12 show a detailed view of a contact carrier section with central suspension via torsion bars in different adjustment phases and
  • Figure 13 is a detailed view of a contact carrier section with an additionally attached contact spring.

    • Das in der Zeichnung dargestellte polarisierte Relais besitzt einen an sich bekannten Aufbau. Ein Sockel 1 bildet eine Bodenplatte 2, die eine Grundebene des Relais definiert, sowie teilweise umlaufende Seitenwände 3. In dem Sockel sind aus einer gemeinsame Platine gestanzte Festkontaktelemente 4 eingebettet, die zur Unterseite der Bodenplatte austretende Anschlußfahnen 5 bilden. An ihren Enden bilden diese Festkontaktelemente 4 jeweils Kontaktträgerabschnitte 6, die jeweils einen Festkontakt 7 tragen.The polarized relay shown in the drawing has a structure known per se. A base 1 forms a base plate 2, which defines a base level of the relay, as well partially surrounding side walls 3. In the base are out stamped fixed contact elements 4 embedded on a common circuit board, the connecting lugs emerging from the underside of the base plate 5 form. These form fixed contact elements at their ends 4 each contact carrier sections 6, each wear a fixed contact 7.

    Unterhalb eines jeden Kontaktträgerabschnittes 6 ist in der Bodenplatte eine Aussparung 8 vorgesehen, über der sich der jeweilige Kontaktträgerabschnitt 6 freitragend erstreckt. Dabei sind die Umfangskonturen der Aussparung 8 und des Kontaktträgerabschnittes 6 ohne Zwischenraum oder mit geringem Spiel so aneinander angepaßt, daß das freie Ende des Kontaktträgerabschnittes in die Aussparung 8 hineinbewegt werden kann. In der Nähe seiner Einspannstelle besitzt jedes Kontaktelement 6 außerdem eine Kerbe 9, die eine Sollbiegestelle bildet.Below each contact carrier section 6 is in the Base plate provided a recess 8 over which the respective contact carrier section 6 extends cantilevered. Here are the peripheral contours of the recess 8 and the contact carrier section 6 without space or with little Matched to each other so that the free end of the contact carrier section be moved into the recess 8 can. Each contact element has in the vicinity of its clamping point 6 also a notch 9, which is a predetermined bending point forms.

    Eine Kappe 10 bildet zusammen mit dem Sockel 1 ein geschlossenes Gehäuse, in welchem im oberen Bereich ein Magnetsystem mit einer Spule 11 auf einem Spulenkörper 12, einem stabförmigen Kern 13 sowie zwei Jochen 14 und 15 angeordnet ist. Zwischen den freien Enden der Joche ist ein stabförmiger, dreipoliger Dauermagnet 16 angeordnet, an dessen Mittelpol N über ein Lagerblech 17 ein langgestreckter Anker 18 gelagert ist. Über einen Kunststoffträger 19 sind an dem Anker 18 zwei Mittelkontaktfedern 20 befestigt, die jeweils an zwei Federenden 21 bewegliche Kontakte 22 tragen. Jeder der beweglichen Kontakte 22 liegt über einem Festkontakt 7 und wird entsprechend der Wippbewegung des Ankers 18 wahlweise mit diesem zusammengeschaltet. Die beiden Kontaktfedern besitzen jeweils seitlich abgebogene Anschlußfahnen 23, die in Figur 1 nur angedeutet sind und auf nicht näher gezeigte Weise auch als Lagerbänder für den Anker dienen. Der Aufbau und die Funktion eines derartigen Relais sind allgemein bekannt und brauchen hier nicht weiter erläutert zu werden.A cap 10 forms a closed together with the base 1 Housing, in which a magnet system in the upper area with a coil 11 on a bobbin 12, a rod-shaped Core 13 and two yokes 14 and 15 is arranged. Between the free ends of the yokes is a rod-shaped, three-pole permanent magnet 16 arranged, at the center pole N An elongated armature 18 is supported via a bearing plate 17 is. Two are on the anchor 18 via a plastic carrier 19 Center contact springs 20 attached, each at two spring ends Wear 21 movable contacts 22. Each of the moveable Contacts 22 lies above a fixed contact 7 and is corresponding the rocking movement of the armature 18 optionally with this interconnected. The two contact springs each have laterally bent connecting lugs 23, which are only indicated in FIG. 1 are and in a manner not shown in detail as storage belts serve for the anchor. The structure and the function of such a relay are generally known and need not to be explained further here.

    Bei der Fertigung des Relais wird zunächst der Anker 18 auf dem Sockel 1 angeordnet und befestigt, danach wird das Magnetsystem aufgesetzt und mit dem Sockel verbunden. Die Kappe 10 schließt das Gehäuse und wird auf bekannte Weise abgedichtet; dabei kann auch die Spule beispielsweise in dem Gehäuse vergossen werden.When manufacturing the relay, the armature 18 is first opened the base 1 arranged and attached, then the magnet system put on and connected to the base. The cap 10 closes the housing and is sealed in a known manner; the coil can also be in the housing, for example be shed.

    Auch wenn bei der Montage des Ankers mit den Kontaktfedern 20 die Kontaktabstände zwischen den Festkontakten 7 und den beweglichen Kontakten 22 eingestellt werden, können sie sich im Lauf der weiteren Fertigung, insbesondere durch Temperaturänderungen beim Abdichten des Relais, wieder in unerwünschter Weise ändern. Aus diesem Grund kann über die Aussparungen 8 auch nach dem Verschluß des Gehäuses eine Justierung der Kontaktabstände vorgenommen werden. Zu diesem Zweck wird über Justierstifte 24 jeweils von unten auf die Kontaktträgerabschnitte 6 gedrückt, bis der Kontaktabstand den vorgegebenen Wert erreicht hat.Even if the armature is fitted with the contact springs 20 the contact distances between the fixed contacts 7 and the movable Contacts 22 are set, they can be in Continuation of production, in particular due to temperature changes when sealing the relay, again in unwanted Change way. For this reason, the cutouts 8 Even after the housing has been closed, the contact distances can be adjusted be made. For this purpose, about Adjustment pins 24 each from below onto the contact carrier sections 6 pressed until the contact distance the specified Has reached value.

    Der Einstellvorgang ist anhand der Figuren 5 bis 8 zu sehen. Gemäß Figur 5 ist der Kontaktträgerabschnitt 6 genau parallel zur Grundebene in der Bodenplatte 2 angeordnet. Der Rand der Aussparung 8 ist so ausgebildet, daß sich der Kontaktträgerabschnitt 6 um die durch die Kerbe 9 gebildete Sollbiegestelle sowohl nach unten zur Sockelaußenseite gemäß Figur 6 als auch nach oben zur Sockelinnenseite gemäß Figur 7 schwenken läßt. Da es einfacher ist, mit den in Figur 1 gezeigten Justierstiften 24 lediglich von außen auf die Kontaktträgerabschnitte zu drücken und sie so gemäß Figur 7 zur Innenseite zu biegen, kann es ratsam sein, die Kontaktträgerabschnitte 6 vor dem Zusammenbau des Relais gemäß Figur 6 etwas nach außen zu biegen, so daß die endgültige Justierung nach dem Zusammenbau in einer Biegung zur Innenseite erfolgen muß. Denkbar wäre es aber auch, am zusammengebauten Relais mit speziellen Justierwerkzeugen den Kontaktträgerabschnitt gemäß Figur 6 nach außen zu biegen. Nach der Justierung wird in die Aussparung 8 jeweils ein Kleber 25 eingefüllt, der den justierten Kontaktträgerabschnitt fixiert und das Gehäuse endgültig abdichtet. Dieser Kleber ist zweckmäßigerweise selbstaushärtend, so daß eine erneute Erhitzung des gesamten Gehäuses nicht notwendig ist.
    wie in Figur 4 außerdem zu erkennen ist, kann der Kleber in eine Mulde 28 eingefüllt werden, von der er dann gleichzeitig in ein ohnehin erforderliches Lüftungsloch 27 und in die Aussparung 8 fließt.    The setting process can be seen with reference to Figures 5 to 8. According to FIG. 5, the contact carrier section 6 is arranged in the base plate 2 exactly parallel to the base plane. The edge of the recess 8 is designed such that the contact carrier section 6 can be pivoted about the predetermined bending point formed by the notch 9 both downwards to the outside of the base according to FIG. 6 and upwards to the inside of the base according to FIG. Since it is easier to press the adjusting pins 24 shown in FIG. 1 only from the outside onto the contact carrier sections and thus bend them to the inside according to FIG. 7, it may be advisable to readjust the contact carrier sections 6 a little before assembling the relay according to FIG bend outside so that the final adjustment after assembly must be made in a bend to the inside. However, it would also be conceivable to bend the contact carrier section according to FIG. 6 outwards on the assembled relay using special adjusting tools. After the adjustment, an adhesive 25 is filled into the recess 8, which fixes the adjusted contact carrier section and finally seals the housing. This adhesive is expediently self-curing, so that it is not necessary to reheat the entire housing.
    As can also be seen in FIG. 4, the adhesive can be poured into a depression 28, from which it then flows simultaneously into a ventilation hole 27 that is required anyway and into the recess 8.

    Bei dem in Figur 1 dargestellten Relais kann der Justiervorgang etwa in folgender Weise ablaufen: wenn der Dauermagnet 16 des polarisierten Systems aufmagnetisiert ist, liegt der Anker nicht in der dargestellten Mittelstellung, sondern er liegt mit einem Ende an einem Joch, beispielsweise an dem Joch 14, an. In diesem Fall sollte die Kontaktfeder 21 mit dem beweglichen Kontakt 22 auf der entgegengesetzten Seite, also in Figur 1 auf der rechten Seite, an dem Festkontakt 7 anliegen. Ist dies nicht der Fall, so wird über den Justierstift 24 der Kontaktträgerabschnitt 6 soweit nachgedrückt, bis die Kontaktgabe zum beweglichen Kontakt 22 erfolgt. Dies kann über die Kontaktanschlüsse gemessen werden. Danach wird ein dem Mindestüberhub entsprechender Weg zusätzlich nachgestellt. Damit ist die untere Grenze der Abbrandsicherheit gewährleistet. Danach wird das Relais umgeschaltet, so daß die entgegengesetzte Kontaktseite ebenfalls auf die gleiche Weise justiert werden kann.In the relay shown in Figure 1, the adjustment process run approximately in the following way: if the permanent magnet 16 of the polarized system is magnetized, the Anchor not in the middle position shown, but he is at one end on a yoke, for example on the Yoke 14, on. In this case, the contact spring 21 should the movable contact 22 on the opposite side, So in Figure 1 on the right side, at the fixed contact 7th issue. If this is not the case, use the adjustment pin 24 the contact carrier section 6 pressed so far, until contact is made with the movable contact 22. This can be measured via the contact connections. After that a path corresponding to the minimum overrun is additionally adjusted. This ensures the lower limit of burn-off safety. Then the relay is switched so that the opposite contact side also in the same way can be adjusted.

    Durch das Nachbiegen der Kontaktträgerabschnitte 6 kann auch jeweils ein Ansprechwert eingestellt werden. In diesem Fall wird das Relais mit einem rampenförmig ansteigenden oder abfallenden Wert erregt, bis es umschaltet. Liegt der im Ansprechzeitpunkt gemessene Eregungswert nicht in einem Sollbereich, so kann durch Nachstellen der Kontaktträgerabschnitte die Rückstellkraft auf der betreffenden Seite erhöht werden, so daß das Relais bei geringerer bzw. entsprechend bei höherer Erregung umschaltet.
    Es ist aber auch möglich, mechanische Werte an dem verschlossenen Relais zu messen und entsprechend die Kontaktträgerabschnitte nachzujustieren. Dies ist beispielsweise mittels eines Meßstiftes 26 möglich, der durch das Lüftungsloch 27 unterhalb des Ankers eingeführt wird und diesen mechanisch umschaltet. Bei diesem Vorgang kann eine Kraft-Weg-Messung durchgeführt werden, die dann ihrerseits Grundlage für eine Nachjustierung der Kontaktträgerabschnitte sein kann.    A response value can also be set in each case by bending the contact carrier sections 6. In this case, the relay is energized with a ramping up or down value until it switches. If the excitation value measured at the time of response is not in a target range, the restoring force on the relevant side can be increased by adjusting the contact carrier sections, so that the relay switches over when the excitation is lower or correspondingly higher.
    However, it is also possible to measure mechanical values on the closed relay and to readjust the contact carrier sections accordingly. This is possible, for example, by means of a measuring pin 26 which is inserted through the ventilation hole 27 below the armature and switches it mechanically. In this process, a force-displacement measurement can be carried out, which in turn can then form the basis for readjustment of the contact carrier sections.

    Schließlich sei noch darauf hingewiesen, daß das erfindungsgemäße Prinzip nicht auf das beispielshalber dargestellte polarisierte Wippankerrelais beschränkt ist, sondern daß vielmehr eine derartige Anordnung von Festkontaktelementen und eine entsprechende Justierung am geschlossenen Gehäuse auch bei anderen Relaiskonstruktionen und bei anderen polarisierten oder neutralen Magnetsystemen vorgesehen werden kann.Finally, it should be pointed out that the invention Principle not polarized to the example shown Rocker relay is limited, but that rather such an arrangement of fixed contact elements and a corresponding adjustment on the closed housing also with other relay designs and with other polarized ones or neutral magnet systems can be provided.

    Durch das Nachjustieren können auch Verspreizungen zwischen den beiden Kontaktfedern 21 einzeln kompensiert werden. Wenn beispielsweise durch eine Verspreizung der Kontaktfedern die Kontaktabstände al und a2 in Figur 9 unterschiedlich sind, was durch elektrische Messung des Schließzeitpunktes festgestellt werden kann, kann durch unterschiedliches Nachbiegen der Kontaktträgerabschnitte 6 auf beiden Seiten ein gleicher Kontaktabstand hergestellt werden.Readjustments can also cause spreading between the two contact springs 21 are compensated individually. If for example by spreading the contact springs Contact distances a1 and a2 are different in FIG. 9, what was determined by electrical measurement of the closing time can be made by different re-bending the contact carrier sections 6 are the same on both sides Contact distance can be established.

    In den Figuren 10 bis 12 ist eine weitere Ausführungsform eines Kontaktträgerabchnittes analog zu den Figuren 5 bis 7 dargestellt. In diesem Fall ist ein Kontaktträgerabschnitt 28 über der Aussparung 8 mit beiden Enden freigeschnitten und in seiner Mitte beiderseits über Torsionsstege 29 an das Festkontaktelement 4 angebunden. In der Zeichnung ist ein Schnitt durch einen der Torsionsstege 29 gezeigt. Somit kann bei dieser Ausführungsform mit dem Justierstift 24 wahlweise auf das eine Ende unterhalb des Festkontakts 7 gemäß Figur 11 oder auf das andere Ende gemäß Figur 12 gedrückt werden. Dementsprechend wird der Festkontakt nach oben oder nach unten bewegt, wobei die Torsionsstege 29 bleibend deformiert werden. Die Aussparung 8 kann dann in gleicher Weise wie gemäß Figur 8 vergossen werden. FIGS. 10 to 12 show a further embodiment of a Contact carrier section analogous to Figures 5 to 7 shown. In this case, a contact carrier section 28 cut free with both ends over the recess 8 and in its center on both sides via torsion bars 29 to the fixed contact element 4 connected. In the drawing is a cut shown by one of the torsion bars 29. So with this Embodiment with the adjustment pin 24 optionally on the one end below the fixed contact 7 according to Figure 11 or are pressed onto the other end according to FIG. Accordingly the fixed contact is moved up or down, wherein the torsion bars 29 are permanently deformed. The recess 8 can then in the same way as shown in the figure 8 are shed.

    Figur 13 zeigt noch in weiterer Abwandlung einen Kontaktträgerabschnitt 30, an dem der Festkontakt 7 nicht unmittelbar, sondern über eine Kontaktfeder 31 befestigt ist. Im übrigen ist dieser Kontaktträgerabschnitt 30 in gleicher Weise justierbar wie der Kontaktträgerabschnitt 6 gemäß den Figuren 1 bis 8.FIG. 13 shows a contact carrier section in a further modification 30 on which the fixed contact 7 is not immediately but is attached via a contact spring 31. Furthermore this contact carrier section 30 is adjustable in the same way like the contact carrier section 6 according to FIGS. 1 till 8.

    Claims (11)

    1. Electromagnetic relay
      having a base (1) composed of insulating material, which defines a base plane by means of a bottom plate (2) and which is part of a closed housing,
      having stationary contact elements (4) which are anchored in the base (1) and each have a connecting tab (5) which is routed to the outside of the housing, and a contact carrier section (6) which is in each case clamped in at one end in the housing interior and extends as a cantilever parallel to the base plane,
      having at least one contact spring (20, 21) which interacts with in each case one contact carrier section and is likewise connected to a connecting tab (23) which is routed to the exterior of the housing, and
      having an electromagnetic system which is arranged above the base (1) in the housing and has a coil (11,12), a core (13) and an armature (18) for operating the at least one moving contact spring (20),
      characterized in that the bottom plate (2) in each case has a cutout (8), which is open to the exterior and is in the form of a window, in the region underneath each contact carrier section (6;28;30).
    2. Relay according to Claim 1,
      characterized in that the shape of the cutout (8) is matched to the external contour of the contact carrier section (6;28;30).
    3. Relay according to Claim 1 or 2,
      characterized in that the contact carrier section (6;30) has an intentional bending point (9) above the edge of the cutout (8), in the vicinity of its clamping-in point.
    4. Relay according to Claim 1 or 2,
      characterized in that the contact carrier section (28) is connected to the stationary contact carrier via torsion webs (29) approximately in the centre region of the cutout (8).
    5. Relay according to one of Claims 1 to 4,
      characterized in that the contact carrier section (30) is connected to a contact spring which, for its part, is fitted with the stationary contact (7).
    6. Relay according to one of Claims 1 to 5,
      characterized in that the cutout (8), which is covered by the contact carrier section (6;28;30) from the interior of the housing, is filled from the exterior of the housing with potting compound (25).
    7. Relay according to one of Claims 1 to 6,
      characterized in that an opening (27) for the insertion of a test pin (26) is provided underneath the armature (18).
    8. Method for producing a relay according to Claim 1,
      the base (1) which is provided with the contact carriers (4) having mounted on it the electromagnet system (11,12,13, 18) and the housing (1,10) being closed,
      characterized in that the respective contact carrier section (6;28;30) is deformed in its angular position with respect to the clamping-in point, by means of an adjusting tool (24) which engages through the cutout (8) in the bottom plate (2), in order to adjust a specified contact gap with respect to an associated moving contact element (21).
    9. Method according to Claim 6,
      characterized in that, after the adjustment by deformation of the contact carrier section (6), the cutout (8) is filled with liquid potting compound (25), which is subsequently cured.
    10. Method according to Claim 6 or 7,
      characterized in that the magnitude of any required readjustment of the contact carrier sections (6) is obtained by energizing the relay and by comparing a measured pull-in and drop-out excitation with a nominal excitation.
    11. Method according to Claim 6 or 7,
      characterized in that the magnitude of any required readjustment is obtained by mechanical operation of the armature (18) via a test pin (26) and by a force/movement measurement carried out in the process.
    EP97925825A 1996-05-07 1997-04-24 Electromagnetic relay Expired - Lifetime EP0897586B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    DE19618289 1996-05-07
    DE19618289 1996-05-07
    PCT/DE1997/000819 WO1997042643A1 (en) 1996-05-07 1997-04-24 Electromagnetic relay

    Publications (2)

    Publication Number Publication Date
    EP0897586A1 EP0897586A1 (en) 1999-02-24
    EP0897586B1 true EP0897586B1 (en) 1999-10-13

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    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP97925825A Expired - Lifetime EP0897586B1 (en) 1996-05-07 1997-04-24 Electromagnetic relay

    Country Status (5)

    Country Link
    EP (1) EP0897586B1 (en)
    JP (1) JP2000509548A (en)
    CN (1) CN1129939C (en)
    DE (1) DE59700564D1 (en)
    WO (1) WO1997042643A1 (en)

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP2860609A1 (en) * 2013-10-11 2015-04-15 C&K Components SAS Method for the initial adjustment of a control device for electronic equipment

    Families Citing this family (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE29807643U1 (en) * 1998-04-28 1998-07-16 TRW Automotive Safety Systems GmbH, 63743 Aschaffenburg Device for adjusting the contact distance
    CN100595855C (en) * 2006-12-29 2010-03-24 浙江正泰电器股份有限公司 An installation device of the contactor
    JP5741338B2 (en) * 2011-09-15 2015-07-01 オムロン株式会社 Terminal member seal structure and electromagnetic relay

    Family Cites Families (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE3102011A1 (en) * 1981-01-22 1982-08-26 Siemens AG, 1000 Berlin und 8000 München ELECTROMAGNETIC RELAY
    JPH0290435A (en) * 1988-09-27 1990-03-29 Matsushita Electric Works Ltd Manufacture of seal relay
    EP0423834A3 (en) * 1989-10-20 1991-12-27 Omron Corporation Electromagnetic relay
    DE4309618A1 (en) * 1993-03-24 1994-09-29 Siemens Ag Polarised electromagnetic relay

    Cited By (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP2860609A1 (en) * 2013-10-11 2015-04-15 C&K Components SAS Method for the initial adjustment of a control device for electronic equipment
    FR3011948A1 (en) * 2013-10-11 2015-04-17 C & K Components S A S METHOD FOR INITIALLY ADJUSTING A DEVICE FOR CONTROLLING AN ELECTRONIC DEVICE
    US9672997B2 (en) 2013-10-11 2017-06-06 C&K Components S.A.S. Method for the initial adjustment of a control device for electronic equipment

    Also Published As

    Publication number Publication date
    CN1217814A (en) 1999-05-26
    JP2000509548A (en) 2000-07-25
    EP0897586A1 (en) 1999-02-24
    WO1997042643A1 (en) 1997-11-13
    CN1129939C (en) 2003-12-03
    DE59700564D1 (en) 1999-11-18

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