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EP0333717A1 - Electromagnetic relay. - Google Patents

Electromagnetic relay.

Info

Publication number
EP0333717A1
EP0333717A1 EP87906810A EP87906810A EP0333717A1 EP 0333717 A1 EP0333717 A1 EP 0333717A1 EP 87906810 A EP87906810 A EP 87906810A EP 87906810 A EP87906810 A EP 87906810A EP 0333717 A1 EP0333717 A1 EP 0333717A1
Authority
EP
European Patent Office
Prior art keywords
contact
base plate
electromagnetic relay
relay
armature
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.)
Granted
Application number
EP87906810A
Other languages
German (de)
French (fr)
Other versions
EP0333717B1 (en
Inventor
Emil Buchschmid
Anton Frenznick
Klaus Lindner
Olaf Schmid
Hans-Dieter Schmid
Gerhard Schmidt
Theodor Sturm
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0333717A1 publication Critical patent/EP0333717A1/en
Application granted granted Critical
Publication of EP0333717B1 publication Critical patent/EP0333717B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/546—Contact arrangements for contactors having bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/34—Contacts characterised by the manner in which co-operating contacts engage by abutting with provision for adjusting position of contact relative to its co-operating contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/60—Contact arrangements moving contact being rigidly combined with movable part of magnetic circuit

Definitions

  • the invention relates to an electromagnetic relay according to the preamble of the main claim.
  • the switching contact arranged on a hinged armature of the relay interacts with a fixed working contact, which must be adjusted to a predetermined contact pressure when the relay is switched on and a certain contact distance when the relay is switched off.
  • the contact carrier which is bent at right angles next to the working contact, is provided with at least one notch for extending this area of the contact carrier. Due to the number and depth of the notches, the normally open contact is moved towards the switching contact of the hinged armature until the required relay data such as the burn-up reserve, contact pressure and contact distance have been reached.
  • the aim is to carry out the extension of the contact carrier for adjusting the relay contact so symmetrically, even in tight spaces, that tilting, the relay contact to the side or to the rear is avoided.
  • the electromagnetic relay according to the invention with the characterizing features of the main claim has the advantage that when the middle of three adjacent legs extend through the lateral connecting webs, a plane-parallel, angular displacement of the relay contact to the switching contact on Folding anchor of the relay is guaranteed. A lateral tilting or moving of the relay contacts is reliably prevented. Another advantage is that the relatively small cross-section of the middle leg of the contact carrier allows the relay contact to be adjusted with little effort with a stamping process in a short time, so that this solution can also be implemented for very small relays with high setting accuracy.
  • FIG. 1 shows an enlarged folding armature relay in a side view
  • FIG. 2 shows the same relay in longitudinal section
  • FIG. 3 shows the adjusted contact carrier of the relay in a spatial representation. Description of the embodiment
  • FIGS. 1 and 2 a hinged armature relay for motor vehicles working as a changeover relay is shown enlarged and designated by 10.
  • Figure 1 shows the relay 10 partially cut in side view and Figure 2 shows the same relay in longitudinal section.
  • the relay 10 is provided with a base plate 11 made of insulating material, in which several tabs 12 forming the connecting parts of the relay are fastened.
  • the base plate 11 also carries an L-shaped magnetic yoke 13, which is anchored at one end with fastening tongues 14 in corresponding pockets of the base plate 11.
  • a relay winding 15 is applied to a coil frame 16 which is supported by a coil core 17. The upper end of the coil core is riveted to the magnet yoke 13.
  • a folding armature 18 is arranged, which is pivotally mounted at one end on the magnetic yoke 13.
  • a leaf spring 19 is riveted to the hinged armature 18, the free end of which projects beyond the end of the hinged armature 18 and carries a switch contact 20.
  • the other end of the leaf spring 19 is guided in a hairpin-shaped curl 21 around a bearing 22 of the hinged armature 18 on the magnetic yoke 13 and riveted to the magnetic yoke 13 with a corresponding preload in order to achieve a restoring force for the hinged armature.
  • the switch contact 20 interacts with two fixed mating contacts, of which the normally closed contact 23 is riveted to an area 12a of the right flat tongue 12 angled above the base plate 11 in FIG.
  • the other mating contact is a working contact 24 which is riveted to an end 25a of a contact carrier 25 which is bent at right angles.
  • the ends of the relay winding 15 are each soldered to a connecting wire 26 fastened to the coil frame 16.
  • the other end of the two connecting wires 26 is in each case with a connection Flag 27 welded, which is each formed on the upper portion of one of the tabs 12.
  • the leaf spring 19 is also electrically connected to the tab 20 for connection of the switch contact 20.
  • the base plate 11 is surrounded by an insulating material housing 28 surrounding the magnet system and the relay contacts.
  • the relay 10 is shown with the hinged armature 18 tightened, the normally open contact 24 has not yet been adjusted. It is now still a short distance above the switching contact 20 of the hinged armature 18.
  • the normally open contact 24 must be moved down to the switching contact 20 until it reaches the adjusted position shown in FIG. 2 has reached.
  • the contact carrier 25 is provided above the working contact 24 with three spaced apart legs 29, 30 and 31, which are connected at their upper end via a common yoke 32 and of which the middle leg 30 carries the angled working contact 24 .
  • the middle leg 30 is also connected on both sides by symmetrically projecting connecting webs 33, 34 to the two outer legs 29 and 31. Between the yoke 32 and the connecting webs 33 and 34, the middle leg 30 has an extension zone 35, through which the working contact 24 can be adjusted in the axial direction of the leg 30 to the switching contact 20.
  • FIG. 3 shows how the ends 36 of an embossing pliers are used to provide the middle leg 30 in the stretching zone 35 with embossments 37 on both sides, through which the middle leg 30 is stretched in the axial direction.
  • the axial guidance of the working contact 24 during the stretching process is ensured by the connecting webs 33, 34 on both sides, which are connected by the middle leg 30 run obliquely to the outer legs 29 and 31. While the connecting webs 33, 34 in the initial state of the contact carrier 25 initially lead away from the middle leg 30 at an angle of 15 ° from the horizontal downward to the outer legs 29 and 31, they are inclined at maximum stroke after the middle leg 30 has been stretched directed upwards towards the outer legs 29, 31.
  • the contact carrier 25 together with the central tab 12 is to be made in one piece by first leading the outer legs 29 and 31 at their ends 29a and 31a facing away from the yoke 32 above the base plate on both sides around the normally closed contact 23 in the base plate 11 and then to that are anchored in the base plate 11 area of the flat tongue 12.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Abstract

Le relais électromagnétique présente un contact de commutation (20) qui, lors de l'actionnement du relais (10), pivote au moyen d'une armature (18) de la position de repos à la position de travail. Pour assurer une pression déterminée du contact de travail (24) sur le contact de commutation (20) par attirance de l'armature (18), le contact de travail (24) est relié au support de contact (25) par une partie allongée (35). Un positionnement simple, rapide et précis du contact de travail (24) est obtenu grâce au fait que le support de contact (25) comprend trois montants (29, 30, 31) parallèles entre eux, contigus et disposés dans la direction de déplacement de l'armature (18); leur extrémité forme une traverse commune (32). Le montant médian (30) porte le contact de travaideux éléments d commune (32). Le montant médian (30) porte le contact de travaile ludé (24). Il est relié aux deux autres montants (29, 31) par deux éléments de liaison symétriques (33, 34). La partie allongée (35) assurant le déplacement du contact de travail (24) se trouve à proximité du montant médian (30), entre la traverse (32) et les éléments de liaison (33, 34).The electromagnetic relay has a switching contact (20) which, when the relay (10) is actuated, pivots by means of an armature (18) from the rest position to the working position. To ensure a determined pressure of the working contact (24) on the switching contact (20) by attracting the armature (18), the working contact (24) is connected to the contact support (25) by an elongated part. (35). Simple, rapid and precise positioning of the working contact (24) is obtained by virtue of the fact that the contact support (25) comprises three uprights (29, 30, 31) parallel to each other, contiguous and arranged in the direction of movement of the frame (18); their end forms a common crosspiece (32). The median upright (30) carries the working contact of common elements (32). The median upright (30) carries the ludged working contact (24). It is connected to the two other uprights (29, 31) by two symmetrical connecting elements (33, 34). The elongated part (35) ensuring the displacement of the working contact (24) is located near the median upright (30), between the crosspiece (32) and the connecting elements (33, 34).

Description

Elektromagnetisches Relais Electromagnetic relay
Stand der TechnikState of the art
Die Erfindung geht aus von einem elektromagnetischen Relais nach der Gattung des Hauptanspruchs.The invention relates to an electromagnetic relay according to the preamble of the main claim.
Bei einem derartigen, bekannten elektromagnetischen Relais (GB-PS 20 72 949) wirkt der an einem Klappanker angeordnete Schaltkontakt des Relais mit einem festen Arbeitskontakt zusammen, der auf einen vorgegebenen Kontaktdruck bei eingeschaltetem Relais und einen bestimmten Kontaktabstand bei abgeschaltetem Relais justiert werden muß. Zu diesem Zweck wird bei der bekannten Lösung der neben dem Arbeitskontakt rechtwinklig abgebogene Kontaktträger mit mindestens einer Einkerbung zur Streckung dieses Bereichs des Kontaktträgers versehen. Durch die Anzahl und Tiefe der Einkerbungen wird der Arbeitskontakt gezielt soweit zum Schaltkontakt des Klappankers hin bewegt, bis die erforderlichen Relaisdaten wie Abbrandreserve, Kontaktdruck und Kontaktabstand erreicht worden.In such a known electromagnetic relay (GB-PS 20 72 949), the switching contact arranged on a hinged armature of the relay interacts with a fixed working contact, which must be adjusted to a predetermined contact pressure when the relay is switched on and a certain contact distance when the relay is switched off. For this purpose, in the known solution, the contact carrier, which is bent at right angles next to the working contact, is provided with at least one notch for extending this area of the contact carrier. Due to the number and depth of the notches, the normally open contact is moved towards the switching contact of the hinged armature until the required relay data such as the burn-up reserve, contact pressure and contact distance have been reached.
Nachteilig bei dieser Lösung ist jedoch, daß durch den Kerbvorgang der Arbeitskontakt nicht immer genau planparallel zum Schaltkontakt des Klappankers angehoben wird. Vielmehr kann durch ungleichmäßig hartes Gefüge im Material des Kontaktträgers der Arbeitskontakt auch leicht seitlich oder nach hinten gekippt werden was dann zu einer unerwünschten einseitigen. Anlage des Schaltkontaktes am Arbeitskontakt führen kann und zu einem schnelleren Kontaktabbrand führt. Außerdem werden bei der Einkerbung des Kontaktträgers auf seiner ganzen Breite erhebliche Werkzeugkräfte wirksam, die an der Rückseite des Kontaktträgers durch eine stabile Auflage aufgenommen werden müssen, um Beschädigungen am Relais zu vermeiden. Der dafür erforderliche Platz ist jedoch nur bei relativ groß bauenden Leistungsrelais vorhanden, so daß sich die bekannte Lösung bei der Herstellung von kleineren Relais auch aus Platzmangel nicht realisieren läßt. Besonders aufwendig ist dabei die Anbringung mehrerer Kerben für eine erforderliche Streckung des Kontaktträgers, da für jeden Kerbvorgang mehrere Arbeitsgänge - wie Kerbhöhe einstellen, Messen, Prägestempel ansetzen, Prägen, Prägestempel zurückfahren - erforderlich sind.A disadvantage of this solution, however, is that the notching process means that the normally open contact is not always exactly parallel to the switching contact the hinged anchor is raised. Rather, because of the unevenly hard structure in the material of the contact carrier, the working contact can also be tilted slightly to the side or to the rear, which then leads to an undesirable one-sided. System of the switch contact on the make contact and leads to faster contact erosion. In addition, considerable notch forces are effective in the notch of the contact carrier over its entire width, which must be absorbed by a stable support on the back of the contact carrier in order to avoid damage to the relay. However, the space required for this is only available in the case of relatively large power relays, so that the known solution in the production of smaller relays cannot be realized even because of a lack of space. The installation of several notches for a necessary stretching of the contact carrier is particularly complex since several notches - such as setting the notch height, measuring, applying stamps, embossing, retracting stamps - are required for each notching process.
Mit der vorliegenden Lösung wird angestrebt, die Streckung des Kontaktträgers zur Einjustierung des Relaiskontaktes auch bei engen Raumverhältnissen so symmetrisch durchzuführen, daß ein Abkippen, des Relaiskontaktes zur Seite oder nach hinten dabei vermieden wird.With the present solution, the aim is to carry out the extension of the contact carrier for adjusting the relay contact so symmetrically, even in tight spaces, that tilting, the relay contact to the side or to the rear is avoided.
Vorteile der ErfindungAdvantages of the invention
Das erfindungsgemäße elektromagnetische Relais mit den kennzeichnenden Merkmalen des Hauptanspruchs hat den Vorteil, daß bei der Streckung des mittleren von drei nebeneinander verlaufenden Schenkeln durch die seitlichen Verbindungsstege eine planparallele, winkelhaltige Verschiebung des Relaiskontaktes zum Schaltkontakt am Klappanker des Relais hin gewährleistet wird. Ein seitliches Kippen oder Versetzen der Relaiskontakte wird zuverlässig verhindert. Als weiterer Vorteil ist anzusehen, daß durch den relativ kleinen Querschnitt des mittleren Schenkels des Kontaktträgers der Relaiskontakt mit geringem Kraftaufwand mit einem Prägevorgang in kurzer Zeit justiert werden kann, so daß sich diese Lösung auch für sehr kleine Relais mit hoher Einstellgenauigkeit realisieren läßt.The electromagnetic relay according to the invention with the characterizing features of the main claim has the advantage that when the middle of three adjacent legs extend through the lateral connecting webs, a plane-parallel, angular displacement of the relay contact to the switching contact on Folding anchor of the relay is guaranteed. A lateral tilting or moving of the relay contacts is reliably prevented. Another advantage is that the relatively small cross-section of the middle leg of the contact carrier allows the relay contact to be adjusted with little effort with a stamping process in a short time, so that this solution can also be implemented for very small relays with high setting accuracy.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Hauptanspruch angegebenen Merkmale möglich. Besonders vorteilhaft ist es, den mittleren Schenkel des Kontaktträgers in seiner Streckzone mit beidseitigen Prägungen zu versehen, weil dabei die gegeneinander gerichteten Prägekräfte vom Prägewerkzeugs selbst aufgenommen werden und weil dadurch ein zusätzliches Gegenlager entfällt. Um sicherzustellen, daß der mittlere Schenkel durch das Prägen auf maximale Streckung von ca. 1,1 mm symmetrisch geführt wird, sind die Stege in ihrer Ausgangsstellung beidseitig unter einem aus der Horizontalen flach nach unten gerichteten Winkel vom mittleren Schenkel zu den äußeren Schenkel weggeführt. Außerdem wird die Stabilität für die drei Schenkel des Kontaktträgers erhöht, wenn die äußeren Schenkel an ihren dem Joch abgewandten Enden zu einem in der Grundplatte verankerten Anschlußteil führen.Advantageous further developments and improvements of the features specified in the main claim are possible through the measures listed in the subclaims. It is particularly advantageous to provide the middle leg of the contact carrier in its stretching zone with embossments on both sides, because the opposing embossing forces are absorbed by the embossing tool itself and because an additional counter bearing is thereby eliminated. In order to ensure that the middle leg is guided symmetrically by the stamping to a maximum extension of approximately 1.1 mm, the webs in their starting position are guided away from the middle leg to the outer leg at both ends at an angle which is directed flatly downwards from the horizontal. In addition, the stability for the three legs of the contact carrier is increased if the outer legs lead at their ends facing away from the yoke to a connecting part anchored in the base plate.
Zeichnungdrawing
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 ein vergrößert dargestelltes Klappankerrelais in der Seitenansicht, Figur 2 das gleiche Relais im Längsschnitt und Figur 3 den einjustierten Kontaktträger des Relais in raumbildlicher Darstellung. Beschreibung des AusführungsbeispielesAn embodiment of the invention is shown in the drawing and explained in more detail in the following description. FIG. 1 shows an enlarged folding armature relay in a side view, FIG. 2 shows the same relay in longitudinal section and FIG. 3 shows the adjusted contact carrier of the relay in a spatial representation. Description of the embodiment
In den Figuren 1 und 2 ist ein als Wechslerrelais arbeitendes Klappankerrelais für Kraftfahrzeuge vergrößert dargestellt und mit 10 bezeichnet. Figur 1 zeigt das Relais 10 teilweise geschnitten in der Seitenansicht und Figur 2 das gleiche Relais im Längsschnitt. Das Relais 10 ist mit einer Grundplatte 11 aus Isolierstoff versehen, in der mehrere, die Anschlußteile des Relais bildende Flachsteckzungen 12 befestigt sind. Die Grundplatte 11 trägt ferner ein L-förmiges Magnetjoch 13, das an einem Stirnende mit Befestigungszungen 14 in entsprechende Taschen der Grundplatte 11 verankert ist. Eine Relaiswicklung 15 ist auf einem Spulenrahmen 16 aufgebracht, der von einem Spulenkern 17 getragen wird. Der Spulenkern ist mit seinem oberen Ende am Magnetjoch 13 festgenietet. Vor dem unteren Ende 17a des Spulenkernes 17 ist ein Klappanker 18 angeordnet, der mit seinem einen Ende am Magnetjoch 13 schwenkbar gelagert ist. Auf dem Klappanker 18 ist eine Blattfeder 19 festgenietet, deren freies, über das Ende des Klappankers 18 hinausragendes Ende einen Schaltkontakt 20 trägt. Das andere Ende der Blattfeder 19 ist in einer haarnadelformigen Locke 21 um eine Lagerstelle 22 des Klappankers 18 am Magnetjoch 13 herumgeführt und zur Erzielung einer Rückstellkraft für den Klappanker mit entsprechender Vorspannung am Magnetjoch 13 festgenietet. Der Schaltkontakt 20 wirkt mit zwei feststehenden Gegenkontakten zusammen, von denen der Ruhekontakt 23 auf einen oberhalb der Grundplatte 11 abgewinkelten Bereich 12a der rechten Flachsteckzunge 12 in Figur 2 aufgenietet ist. Der andere Gegenkontakt ist ein Arbeitskontakt 24, der an einem rechtwinklig abgebogenen Ende 25a eines Kontaktträgers 25 festgenietet ist. Die Enden der Relaiswicklung 15 sind jeweils an einem am Spulenrahmen 16 befestigten Anschlußdraht 26 angelötet. Das andere Ende der beiden Anschlußdrähte 26 ist jeweils mit einer Anschluß fahne 27 verschweißt, die jeweils am oberen Abschnitt einer der Flachsteckzungen 12 angeformt ist. Die Blattfeder 19 ist zum Anschluß des Schaltkontaktes 20 ebenfalls mit einer Flachsteckzunge 12 elektrisch verbunden. Die Grundplatte 11 ist von einem das Magnetsystem und die Relaiskontakte umgebenden Isolierstoffgehäuse 28 eingefaßt.In FIGS. 1 and 2, a hinged armature relay for motor vehicles working as a changeover relay is shown enlarged and designated by 10. Figure 1 shows the relay 10 partially cut in side view and Figure 2 shows the same relay in longitudinal section. The relay 10 is provided with a base plate 11 made of insulating material, in which several tabs 12 forming the connecting parts of the relay are fastened. The base plate 11 also carries an L-shaped magnetic yoke 13, which is anchored at one end with fastening tongues 14 in corresponding pockets of the base plate 11. A relay winding 15 is applied to a coil frame 16 which is supported by a coil core 17. The upper end of the coil core is riveted to the magnet yoke 13. In front of the lower end 17a of the coil core 17, a folding armature 18 is arranged, which is pivotally mounted at one end on the magnetic yoke 13. A leaf spring 19 is riveted to the hinged armature 18, the free end of which projects beyond the end of the hinged armature 18 and carries a switch contact 20. The other end of the leaf spring 19 is guided in a hairpin-shaped curl 21 around a bearing 22 of the hinged armature 18 on the magnetic yoke 13 and riveted to the magnetic yoke 13 with a corresponding preload in order to achieve a restoring force for the hinged armature. The switch contact 20 interacts with two fixed mating contacts, of which the normally closed contact 23 is riveted to an area 12a of the right flat tongue 12 angled above the base plate 11 in FIG. The other mating contact is a working contact 24 which is riveted to an end 25a of a contact carrier 25 which is bent at right angles. The ends of the relay winding 15 are each soldered to a connecting wire 26 fastened to the coil frame 16. The other end of the two connecting wires 26 is in each case with a connection Flag 27 welded, which is each formed on the upper portion of one of the tabs 12. The leaf spring 19 is also electrically connected to the tab 20 for connection of the switch contact 20. The base plate 11 is surrounded by an insulating material housing 28 surrounding the magnet system and the relay contacts.
In Figur 1 ist das Relais 10 mit angezogenem Klappanker 18 dargestellt, wobei der Arbeitskontakt 24 noch nicht einjustiert ist. Er steht jetzt noch mit geringem Abstand über den Schaltkontakt 20 des Klappankers 18. Zur Einjustierung der gewünschten Abbrandreserve und der gewünschten Kontaktkraft bei angezogenem Klappanker 18 muß der Arbeitskontakt 24 zum Schaltkontakt 20 hin nach unten bewegt werden, bis er die in Figur 2 dargestellte einjustierte Position erreicht hat. Zu diesem Zweck ist der Kontaktträger 25 oberhalb des Arbeitskontaktes 24 mit drei im Abstand nebeneinander verlaufende Schenkel 29, 30 und 31 versehen, die an ihrem oberen Ende über ein gemeinsames Joch 32 miteinander verbunden sind und von denen der mittlere Schenkel 30 den abgewinkelten Arbeitskontakt 24 trägt. Der mittlere Schenkel 30 ist außerdem beidseitig durch symmetrisch abstehende Verbindungsstege 33, 34 mit den zwei äußeren Schenkeln 29 und 31 verbunden. Zwischen dem Joch 32 und den Verbindungsstegen 33 und 34 weist der mittlere Schenkel 30 eine Streckzone 35 auf, durch die der Arbeitskontakt 24 in Axialrichtung des Schenkels 30 zum Schaltkontakt 20 hin justiert werden kann.In Figure 1, the relay 10 is shown with the hinged armature 18 tightened, the normally open contact 24 has not yet been adjusted. It is now still a short distance above the switching contact 20 of the hinged armature 18. To adjust the desired erosion reserve and the desired contact force when the hinged armature 18 is tightened, the normally open contact 24 must be moved down to the switching contact 20 until it reaches the adjusted position shown in FIG. 2 has reached. For this purpose, the contact carrier 25 is provided above the working contact 24 with three spaced apart legs 29, 30 and 31, which are connected at their upper end via a common yoke 32 and of which the middle leg 30 carries the angled working contact 24 . The middle leg 30 is also connected on both sides by symmetrically projecting connecting webs 33, 34 to the two outer legs 29 and 31. Between the yoke 32 and the connecting webs 33 and 34, the middle leg 30 has an extension zone 35, through which the working contact 24 can be adjusted in the axial direction of the leg 30 to the switching contact 20.
In Figur 3 ist dargestellt, wie mit den Enden 36 einer Prägezange der mittlere Schenkel 30 in der Streckzone 35 mit beidseitigen Prägungen 37 zu versehen ist, durch die der mittlere Schenkel 30 in Achsrichtung gestreckt wird. Die axiale Führung des Arbeitskontaktes 24 während des Streckvorganges wird durch die beidseitigen Verbindungsstege 33, 34 gewährleistet, die vom mittleren Schenkel 30 schräg zu den äußeren Schenkeln 29 und 31 verlaufen. Während die Verbindungsstege 33, 34 im Ausgangszustand des Kontaktträgers 25 vom mittleren Schenkel 30 aus zunächst in einem Winkel von 15° von der Horizontalen schräg nach unten zu den äußeren Schenkeln 29 und 31 wegführen, sind sie bei Maximalhub nach dem Streckvorgang des mittleren Schenkels 30 schräg nach oben zu den äußeren Schenkeln 29, 31 hin gerichtet. Dadurch wird einem Zurückfedern des mittleren Schenkels 30 am Ende des Justiervorgvangs zuverlässig entgegengewirkt und das ohnehin geringfügige Ausbauchen, der äußeren Schenkel 29 und 31 damit minimiert. Auf diese Weise können auf engem Raum Relaiskontakte nach der kompletten Montage des Relais kostengünstig, schnell, mit hoher Einstellgenauigkeit und geringsten Rückfederungsraten justiert werden. Außerdem ist der Kontaktträger 25 zusammen mit der mittleren Flachsteckzunge 12 einteilig auszuführen, indem die äußeren Schenkel 29 und 31 an ihrem dem Joch 32 abgewandten Ende 29a und 31a zunächst oberhalb der Grundplatte beidseitig um den Ruhekontakt 23 in der Grundplatte 11 geführt werden und dann zu dem in der Grundplatte 11 verankerten Bereich der Flachsteckzunge 12 vereinigt sind. FIG. 3 shows how the ends 36 of an embossing pliers are used to provide the middle leg 30 in the stretching zone 35 with embossments 37 on both sides, through which the middle leg 30 is stretched in the axial direction. The axial guidance of the working contact 24 during the stretching process is ensured by the connecting webs 33, 34 on both sides, which are connected by the middle leg 30 run obliquely to the outer legs 29 and 31. While the connecting webs 33, 34 in the initial state of the contact carrier 25 initially lead away from the middle leg 30 at an angle of 15 ° from the horizontal downward to the outer legs 29 and 31, they are inclined at maximum stroke after the middle leg 30 has been stretched directed upwards towards the outer legs 29, 31. This reliably counteracts springing back of the middle leg 30 at the end of the adjustment process and the minimal bulging of the outer legs 29 and 31 is thus minimized. In this way, relay contacts can be adjusted inexpensively, quickly, with high setting accuracy and the lowest spring-back rates in a confined space. In addition, the contact carrier 25 together with the central tab 12 is to be made in one piece by first leading the outer legs 29 and 31 at their ends 29a and 31a facing away from the yoke 32 above the base plate on both sides around the normally closed contact 23 in the base plate 11 and then to that are anchored in the base plate 11 area of the flat tongue 12.

Claims

Ansprüche Expectations
1. Elektromagnetisches Relais mit einer Grundplatte aus Isolierstoff zur Aufnahme von Kontakt- und Anschlußteilen sowie mit einem auf der Grundplatte befestigten Magnetjoch mit einem eine Relaiswicklung tragenden Spulenkern und mit einem schwenkbar an der Stirnseite des Spulenkernes angeordneten Klappanker, der einen Schaltkontakt trägt, welcher mit mindestens einem festen Gegenkontakt zusammenwirkt, dessen Kontaktträger auf der Grundplatte befestigt ist und einen vom Gegenkontakt rechtwinklig abgebogenen, in Bewegungsrichtung des Ankers verlaufenden Bereich aufweist, der mit mindestens einer Streckzone zur Einstellung des Gegenkontaktes versehen ist, dadurch gekennzeichnet, daß der in Bewegungsrichtung des Ankers verlaufende Bereich des Kontaktträgers (25) aus drei mit Abstand nebeneinander verlaufenden Schenkeln (29, 30, 31) besteht, die in einem gemeinsamen Joch (32) enden und von denen der mittlere Schenkel den abgewinkelten Gegenkontakt (24) trägt, und durch beidseitig symmetrisch abstehende Verbindungsstege (33, 34) mit den zwei äußeren Schenkeln (29, 31) verbunden ist und daß zwischen dem Joch (32) und den Verbindungsstegen (33, 34) der mittlere Schenkel (30) die Streckzone (35) aufweist. 1.Electromagnetic relay with a base plate made of insulating material for receiving contact and connecting parts and with a magnetic yoke attached to the base plate with a coil core carrying a relay winding and with a hinged armature arranged on the end face of the coil core, which carries a switching contact, which with at least a fixed mating contact cooperates, the contact carrier of which is fastened to the base plate and has an area which is bent at right angles from the mating contact and extends in the direction of movement of the armature and which is provided with at least one extension zone for setting the mating contact, characterized in that the area extending in the direction of movement of the armature of the contact carrier (25) consists of three spaced apart legs (29, 30, 31), which end in a common yoke (32) and of which the middle leg carries the angled counter-contact (24), and symme on both sides Trisch projecting connecting webs (33, 34) is connected to the two outer legs (29, 31) and that between the yoke (32) and the connecting webs (33, 34), the middle leg (30) has the stretching zone (35).
2. Elektromagnetisches Relais nach Anspruch 1, dadurch gekennzeichnet, daß der mittlere Schenkel (30) in der Streckzone (35) mit beidseitigen Prägungen (37) versehen ist.2. Electromagnetic relay according to claim 1, characterized in that the central leg (30) in the stretching zone (35) is provided with embossments on both sides (37).
3. Elektromagnetisches Relais nach Anspruch 2, dadurch gekennzeichnet, daß die beidseitigen VerbindungsStege (33, 34) unter dem gleichen Winkel vom mittleren Schenkel (30) zu den äußeren Schenkeln (29 und 31) hin verlaufen.3. Electromagnetic relay according to claim 2, characterized in that the connecting webs on both sides (33, 34) run at the same angle from the middle leg (30) to the outer legs (29 and 31).
4. Elektromagnetisches Relais nach Anspruch 3, dadurch gekennzeichnet, daß die äußeren Schenkel (29, 30) an ihren dem Joch (32) abgewandten Enden (29a, 31a) beidseitig an einem Ruhekontakt (23) vorbeigeführt und danach zu einem in der Grundplatte (11) verankerten Anschlußteil (12) vereinigt sind. 4. Electromagnetic relay according to claim 3, characterized in that the outer legs (29, 30) on their ends facing away from the yoke (32) (29a, 31a) on both sides past a break contact (23) and then to one in the base plate ( 11) anchored connecting part (12) are combined.
EP19870906810 1986-12-01 1987-10-24 Electromagnetic relay Expired - Lifetime EP0333717B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3640997 1986-12-01
DE3640997A DE3640997C1 (en) 1986-12-01 1986-12-01 Electromagnetic relay

Publications (2)

Publication Number Publication Date
EP0333717A1 true EP0333717A1 (en) 1989-09-27
EP0333717B1 EP0333717B1 (en) 1991-10-30

Family

ID=6315198

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870906810 Expired - Lifetime EP0333717B1 (en) 1986-12-01 1987-10-24 Electromagnetic relay

Country Status (6)

Country Link
US (1) US4926150A (en)
EP (1) EP0333717B1 (en)
JP (1) JPH02500786A (en)
KR (1) KR890700258A (en)
DE (2) DE3640997C1 (en)
WO (1) WO1988004466A1 (en)

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Also Published As

Publication number Publication date
DE3640997C1 (en) 1987-12-10
JPH02500786A (en) 1990-03-15
WO1988004466A1 (en) 1988-06-16
KR890700258A (en) 1989-03-10
DE3774278D1 (en) 1991-12-05
EP0333717B1 (en) 1991-10-30
US4926150A (en) 1990-05-15

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