EP0319478B1 - Printed circuit board relay - Google Patents
Printed circuit board relay Download PDFInfo
- Publication number
- EP0319478B1 EP0319478B1 EP88810810A EP88810810A EP0319478B1 EP 0319478 B1 EP0319478 B1 EP 0319478B1 EP 88810810 A EP88810810 A EP 88810810A EP 88810810 A EP88810810 A EP 88810810A EP 0319478 B1 EP0319478 B1 EP 0319478B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- armature
- relay
- spring
- shaped
- limbs
- 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
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/58—Electric connections to or between contacts; Terminals
- H01H1/5805—Connections to printed circuits
Definitions
- the present invention relates to a circuit board relay according to the preamble of the first claim.
- circuit board relays which have in common that they must not exceed a certain height from the circuit board so that circuit boards with relays mounted thereon can be arranged next to one another with a standardized distance from one another.
- MT2 circuit board relay
- This previously known relay has two changeover contacts with specific performance data and is designed for low power consumption of the excitation winding in order to serve as the output stage of integrated circuits.
- the relay shown in the drawing is a folding armature circuit board relay with "dual-in-line" pin assignment, i.e. all connections are arranged in the base area of a cuboid along its long sides, normalized distances being maintained both between the two rows of connections and between the individual connections.
- Fig. 1 shows a vertical section through the relay according to the invention along the axis of its excitation coil. From this it can be seen that the present relay essentially has three main parts, namely an actuation system 1, a spring set 2 and a relay base 3. Not shown is a cuboid cover with which the relay can be hermetically sealed in order to define conditions for the contacts throughout the lifetime of the relay.
- the hermetic seal of the joint between the cover and relay base 3 and the passage of the connections in the relay base can be carried out with the help of a hardening casting resin that is applied to the floor at two points and is distributed over channels suitably arranged in the floor as a result of capillary action, e.g. is described in detail in CH-625 381.
- the actuation system 1 shown in FIG. 2 before assembly with the spring set 2 and the relay base 3 consists of an excitation coil 11 wound on a coil former 10, an E-shaped magnet yoke 12 and a U-shaped armature 13, which is used with the aid of an armature return spring Acting hinge spring 14 is held and positively connected to a slide 15 which transmits the armature movement to the contacts.
- the coil body 10 is the actual framework of the relay, in that in addition to the excitation coil 11, it also receives the middle leg of the magnetic yoke 12, guides the slide 15 with the aid of recesses 18 and limits its stroke and thus the armature stroke, bearing surfaces for the spring set 2 defines bolt-like Has projections 16 on the underside for precise positioning and fixing of the relay base 3 with an intermediate contact set 2, and on the top has bolt-like projections 17 for exact positioning and fixing of the hinge spring 14. Furthermore, connection lugs 19 are held in the coil body 10, at the upper ends of which the wire ends of the excitation coil 11 are connected. To When the coil is wound, these upper ends are bent toward the coil axis, as can be seen from FIGS. 3 and 4, in order to achieve strain relief for the connecting wires of the excitation coil.
- the present relay has four adjacent changeover contacts, one of which is shown in section in FIG. 1 and the structure of which is basically the same as that of the two changeover contacts of the known relay mentioned in the introduction.
- the spring set 2 has only one plastic part, in which the normally closed contacts 20 and the changeover springs 21 and their leads are held on the connecting tabs, while the working contacts 31 and their connecting tabs are held in the relay base 3.
- the present relay is wider than the previously known relay, but it has the same overall length, which means that the distance between the connection tabs is halved compared to that of the known relay.
- the movable ends 22 of the changeover springs 20 are moved by the aforementioned slide 15 when the relay is excited from the rest position to the working position.
- the shape of the slide 15 is particularly visible in FIG. 3.
- Two arms 15.2 extend upward from a crossbeam 15.1, the lower edge of which can act on the four changeover springs. These arms have bevels 15.3 at the upper ends on the inside, with recesses 15.4 adjacent to them, which are shaped in such a way that a protruding tongue 13.1 of the armature can be snapped onto the slide 15 under the spring action of the arms 15.2.
- This also has recesses 13.3, which are clearly visible in FIG. 4.
- the crossbar 15.1 of the slide 15 is guided at both ends through recesses 18 (FIGS. 1 and 3) in the coil body 10. These recesses are shaped so that they also serve to limit the armature stroke when the relay is not energized.
- the armature 13 is held by means of an articulated spring 14.
- This hinge spring has an H-shaped outline with greatly shortened upper legs, as can be seen from FIG. 4.
- the relay function only serve the two vertical legs of the H, while the cross-connection is only intended to make production and assembly easier, ie two individual, identical-shaped leaf springs could also be used.
- the two legs of the articulated spring 14, which serve the relay function are each connected at one end, as usual, to the corresponding legs of the U-shaped armature 13, but not at the other end, as is customary in the prior art, with the two outer legs of the E-shaped yoke 12, but with bolt-shaped projections 17 of the coil body 10.
- the other ends of the legs of the articulated spring 14 have holes 14.2 to be pressed onto the bolt-shaped projections 17 to be, so that there is a non-positive connection between the hinge spring 14 and bolt 17, the conical part of these projections serves as an insertion aid and can be formed into a rivet head after pressing, so that a positive connection is additionally created.
- the legs of the hinge spring 14 are approximately as long as the legs of the armature 13 together with the projecting end 13.1.
- This construction allows on the one hand long legs of the armature 13, which cover the corresponding legs of the yoke 12 to about 2/3 of their length and thus ensure a low magnetic resistance of the yoke / armature circuit, and on the other hand long legs of the hinge spring 15, which too a low mechanical load and thus leads to the desired high number of operating cycles of the relay without spring break.
- the hinge spring 14 has a bend to bias this spring.
- the location of this bend and its extent is chosen so that the edge pressure of the edge 13.2 of the armature 13 resting on the legs of the yoke 12 in the rest state is minimal and the restraining force acting on the armature is large enough that the armature 13 is defined even under impact stress Size not moved into the working position.
- the legs of the articulated spring 14 are provided with recesses 14.1.
Abstract
Description
Die vorliegende Erfindung betrifft ein Leiterplattenrelais gemäss dem Oberbegriff des ersten Anspruchs.The present invention relates to a circuit board relay according to the preamble of the first claim.
Es sind verschiedene solche Leiterplattenrelais bekannt, denen gemeinsam ist, dass sie eine bestimmte Höhe ab Leiterplatte nicht überschreiten dürfen, damit Leiterplatten mit darauf montierten Relais nebeneinander mit einem normierten Abstand untereinander angeordnet werden können. Ein solches Relais wird von der Anmelderin unter der Bezeichnung MT2 hergestellt und vertrieben. Dieses Relais wurde im Artikel "MT-Relais - ein Leiterplattenrelais mit dual-in-line-Anschlussbelegung" von W. Kälin in "STR-Report" Jg. 5, Nr. 2, Nov. 1984 eingehend beschrieben.Various such circuit board relays are known, which have in common that they must not exceed a certain height from the circuit board so that circuit boards with relays mounted thereon can be arranged next to one another with a standardized distance from one another. Such a relay is manufactured and sold by the applicant under the name MT2. This relay was described in detail in the article "MT-Relay - a PCB relay with dual-in-line pin assignment" by W. Kälin in "STR-Report" Vol. 5, No. 2, Nov. 1984.
Dieses vorbekannte Relais weist zwei Umschaltekontakte mit bestimmten Leistungsdaten auf und ist für eine geringe Leistungsaufnahme der Erregerwicklung ausgelegt, um als Ausgangsstufe von integrierten Schaltkreisen zu dienen.This previously known relay has two changeover contacts with specific performance data and is designed for low power consumption of the excitation winding in order to serve as the output stage of integrated circuits.
Wenn nun ein dem oben erwähnten Relais ähnliches Relais mit vier Umschaltekontakten mit gleichen Leistungsdaten vorgesehen werden soll, führt die Verdoppelung der Anzahl der Kontakte auch ungefähr zu einer Verdoppelung der notwendigen Erregerleistung, so dass auch der Magnetkreis neu ausgelegt werden muss. Da die Bauhöhe aus den bereits erwähnten Gründen begrenzt ist und beim beschriebenen, vorbekannten Relais bereits voll ausgenützt wird, verbietet sich eine mässstäblich vergrösserte Ausführung des Magnetkreises dieses Relais.If a relay similar to the above-mentioned relay with four changeover contacts with the same performance data is now to be provided, doubling the number of contacts also roughly doubles the necessary excitation power, so that the magnetic circuit also has to be redesigned. Since the overall height is limited for the reasons already mentioned and is already fully utilized in the previously known relay described, a scaled-up version of the magnetic circuit of this relay is prohibited.
Es ist nun Aufgabe der vorliegenden Erfindung ein Leiterplattenrelais der vorgenannten Art mit vier Umschaltekontakten vorzusehen, dessen Erregerleistung pro Umschaltekontakt etwa gleich jener des vorbekannten Relais ist, dessen Bauhöhe jene des vorbekannten Relais nicht übersteigt und dessen Auslegung so ist, dass eine automatisierte Fertigung möglich ist.It is an object of the present invention to provide a circuit board relay of the aforementioned type with four changeover contacts, the excitation power per changeover contact is approximately equal to that of the known relay, the overall height of which does not exceed that of the known relay and the design of which is such that automated production is possible.
Gelöst wird diese Aufgabe durch die im kennzeichnenden Teil des ersten Anspruches genannten Merkmale.This object is achieved by the features mentioned in the characterizing part of the first claim.
Ein Ausführungbeispiel der Erfindung wird nun anhand der Zeichnung näher erläutert. In der Zeichnung zeigt:
- Die Fig. 1
- einen Vertikal schnitt durch ein Relais entlang der Spulenachse;
- Die Fig. 2
- einen Vertikal schnitt analog jenem von Fig. 1, jedoch beschränkt auf das Betätigungssystem des Relais;
- Die Fig. 3
- eine Frontansicht des Betätigungsystems des Relais;
- Die Fig. 4
- eine Ansicht des Relais von oben; und
- Die Fig. 5
- eine Ansicht des Relais von unten, Relaisboden teilweise weggeschnitten.
- 1
- a vertical section through a relay along the coil axis;
- 2
- a vertical section similar to that of Figure 1, but limited to the actuation system of the relay.
- 3
- a front view of the actuation system of the relay;
- 4
- a view of the relay from above; and
- 5
- a view of the relay from below, relay floor partially cut away.
Das in der Zeichnung gezeigte Relais ist wie das im in der Einleitung erwähnten Artikel beschriebene Relais ein Klappanker-Leiterplattenrelais mit "dual-in- line"-Anschlussbelegung, d.h. alle Anschlüsse sind in der Grundfläche eines Quaders entlang seiner Längsseiten angeordnet, wobei sowohl zwischen den beiden Reihen von Anschlüssen als auch zwischen den einzelnen Anschlüssen normierte Abstände eingehalten werden.The relay shown in the drawing, like the relay described in the article mentioned in the introduction, is a folding armature circuit board relay with "dual-in-line" pin assignment, i.e. all connections are arranged in the base area of a cuboid along its long sides, normalized distances being maintained both between the two rows of connections and between the individual connections.
Die Fig. 1 zeigt einen Vertikal schnitt durch das erfindungsgemässe Relais entlang der Achse seiner Erregerspule. Daraus ist ersichtlich, dass das vorliegende Relais im wesentlichen drei Hauptteile aufweist, nämlich ein Betätigungssystem 1, einen Federsatz 2 und einen Relaisboden 3. Nicht gezeigt ist ein quaderförmiger Deckel, mit welchem sich das Relais hermetisch dicht schliessen lässt, um für die Kontakte definierte Bedingungen während der ganzen Lebenszeit des Relais zu schaffen. Der hermetische Abschluss der Fuge zwischen Deckel und Relaisboden 3 und der Durchführungen der Anschlüsse im Relaisboden kann mit Hilfe eines aushärtenden Giessharzes erfolgen, das an zwei Punkten auf den Boden aufgebracht wird und sich über im Boden geeignet angeordnete Kanäle infolge Kapillarwirkung verteilt, wie dies z.B. in CH-625 381 ausführlich beschrieben ist.Fig. 1 shows a vertical section through the relay according to the invention along the axis of its excitation coil. From this it can be seen that the present relay essentially has three main parts, namely an actuation system 1, a
Das in Fig. 2 vor dem Zusammenbau mit dem Federsatz 2 und dem Relaisboden 3 gezeigte Betätigungssystem 1 besteht aus einer auf einen Spulenkörper 10 gewickelten Erregerspule 11, einem E-förmigen Magnetjoch 12 und einem U-förmigen Anker 13, welcher mit Hilfe einer als Ankerrückstellfeder wirkenden Gelenkfeder 14 gehaltert und formschlüssig mit einem Schieber 15 verbunden ist, der die Ankerbewegung auf die Kontakte überträgt. Der Spulenkörper 10 ist das eigentliche Gerüst des Relais, indem er neben der Erregerspule 11 auch den Mittelschenkel des Magnetjochs 12 aufnimmt, den Schieber 15 mit Hilfe von Ausnehmungen 18 führt und dessen Hub und damit den Ankerhub begrenzt, Auflageflächen für den Federsatz 2 definiert, bolzenartige Vorsprünge 16 an der Unterseite zur genauen Positionierung und Fixierung des Relaisbodens 3 mit zwischenliegendem Kontaktsatz 2 besitzt, und an der Oberseite bolzenartige Vorsprünge 17 zur genauen Positionierung und Fixierung der Gelenkfeder 14 aufweist. Ferner sind Anschlussfahnen 19 im Spulenkörper 10 gehaltert, an deren oberen Enden die Drahtenden der Erregerspule 11 angeschlossen sind. Nach dem Bewickeln der Spule werden diese oberen Enden zur Spulenachse hin abgebogen, wie aus Fig. 3 und 4 ersichtlich ist, um eine Zugentlastung für die Anschlussdrähte der Erregerspule zu erreichen.The actuation system 1 shown in FIG. 2 before assembly with the
Das vorliegende Relais weist vier nebeneinanderliegende Umschaltekontakte auf, von denen einer in Fig. 1 im Schnitt gezeigt ist und deren Aufbau im Prinzip gleich jenem der beiden Umschaltekontakte des in der Einleitung erwähnten, bekannten Relais ist. Allerdings weist beim vorliegenden Relais der Federsatz 2 nur ein Kunststoffteil auf, in welchem die Ruhekontakte 20 und die Umschaltefedern 21 und deren Herausführungen auf die Anschlusslappen gehaltert sind, während die Arbeitskontakte 31 und ihre Anschlusslappen im Relaisboden 3 gehaltert sind. Dies ergibt den Vorteil, dass beim Zusammenbau des Relais ein Bauteil weniger montiert werden muss, wobei dank Führungszapfen und -bohrungen eine Vormontage von Federsatz 2 und Relaisboden 3 erfolgen kann, was den Kontaktsatz ergibt, der bereits für sich prüfbar ist. Wie bereits erwähnt wurde, ist das vorliegende Relais breiter als das bereits mehrmals genannte, vorbekannte Relais, es weist aber die gleiche Baulänge auf, was dazu führt, dass der Abstand der Anschlusslappen untereinander gegenüber jenem beim vorbekannten Relais halbiert ist.The present relay has four adjacent changeover contacts, one of which is shown in section in FIG. 1 and the structure of which is basically the same as that of the two changeover contacts of the known relay mentioned in the introduction. However, in the present relay, the
Die beweglichen Enden 22 der Umschaltefedern 20 werden durch den bereits erwähnten Schieber 15 beim Erregen des Relais aus der Ruhestellung in die Arbeitsstellung bewegt. Die Form des Schiebers 15 ist insbesondere in Fig. 3 gut sichtbar. Von einem Querbalken 15.1, dessen Unterkante auf die vier Umschaltefedern einwirken kann, erstrecken sich zwei Arme 15.2 nach oben. Diese Arme weisen an den obern Enden auf der Innenseite Abschrägungen 15.3 auf, denen Ausnehmungen 15.4 benachbart sind, die so geformt sind, dass sich eine vorstehende Zunge 13.1 des Ankers unter federnder Wirkung der Arme 15.2 auf den Schieber 15 aufschnappen lässt. Zur Fixierung der Lage des Schiebers 15 auf der Zunge 13.1 des Ankers 13, weist diese ebenfalls Ausnehmungen 13.3 auf, die in Fig. 4 gut sichtbar sind. Der Querbalken 15.1 des Schiebers 15 wird an seinen beiden Enden durch Ausnehmungen 18 (Fig. 1 und 3) im Spulenkörper 10 geführt. Diese Ausnehmungen sind so geformt, dass sie gleichzeitig zur Begrenzung des Ankerhubes bei nicht erregtem Relais dienen.The
Wie bereits erwähnt wurde, ist der Anker 13 mit Hilfe einer Gelenkfeder 14 gehaltert. Diese Gelenkfeder weist einen H-förmigen Grundriss mit stark gekürzten oberen Schenkeln auf, wie aus Fig. 4 ersichtlich ist. Der Relaisfunktion dienen nur die beiden senkrechten Schenkel des H, während die Querverbindung lediglich eine Fertigungs- und Montageerleichterung bezweckt, d.h. es könnten auch zwei einzelne, gleich geformte Blattfedern verwendet werden. Wie aus den Fig. 1 und 2 ersichtlich ist, sind die beiden der Relaisfunktion dienenden Schenkel der Gelenkfeder 14 an jeweils einem Ende zwar, wie üblich, mit den entsprechenden Schenkeln des U-förmigen Ankers 13 verbunden, mit dem jeweils andern Ende jedoch nicht, wie beim Stande der Technik üblich, mit den beiden äusseren Schenkeln des E-förmigen Jochs 12, sondern mit bolzenförmigen Vorsprüngen 17 des Spulenkörpers 10. Dazu weisen die genannten andern Enden der Schenkel der Gelenkfeder 14 Bohrungen 14.2 auf, um auf die bolzenförmigen Vorsprünge 17 aufgepresst zu werden, so dass sich ein kraftschlüssige Verbindung zwischen Gelenkfeder 14 und Bolzen 17 ergibt, wobei der konische Teil dieser Vorsprünge als Einführhilfe dient und nach erfolgtem Aufpressen zu einem Nietkopf umgeformt werden kann, so dass zusätzlich eine formschlüssige Verbindung entsteht. Wie aus der Zeichnung ersichtlich ist, sind die Schenkel der Gelenkfeder 14 ungefähr so lang wie die Schenkel des Ankers 13 zusammen mit dem vorspringen Ende 13.1. Diese Konstruktion erlaubt einerseits lange Schenkel des Ankers 13, welche die entsprechenden Schenkel des Jochs 12 auf ungefähr 2/3 ihrer Länge überdecken und damit für einen geringen magnetischen Widerstand des Kreises Joch/Anker sorgen, und anderseits gleichzeitig lange Schenkel der Gelenkfeder 15, was zu einer geringen mechanischen Belastung und damit zu der gewünschten hohen Anzahl von Betätigungsspielen des Relais ohne Federbruch führt.As already mentioned, the
Wie aus der Zeichnung ersichtlich ist, weist die Gelenkfeder 14 eine Biegung auf zur Vorspannung dieser Feder. Der Ort dieser Biegung und deren Ausmass ist so gewählt, dass der Kantendruck der im Ruhezustand auf den Schenkeln des Joches 12 aufliegenden Kante 13.2 des Ankers 13 minimal und die auf den Anker einwirkende Rückhaltekraft gross genug ist, dass sich der Anker 13 auch unter Stossbeanspruchung definierter Grösse nicht in die Arbeitsstellung bewegt. Um aus Fertigungsgründen etwas dickeres Federmaterial verwenden zu können, sind die Schenkel der Gelenkfeder 14 mit Ausnehmungen 14.1 versehen.As can be seen from the drawing, the
Claims (4)
- Relay for printed circuit boards with dual-in-line terminal configuration with a coil former (10) constituting the relay structure, an E-shaped magnet yoke (12), a U-shaped armature (13), a slider (15) for transmitting the armature motion to contacts arranged in a plane parallel to the one of the magnetic circuit, and a housing sealing hermetically, characterized in that four change-over contacts are arranged side by side, that the legs of the armature (13) overlap the corresponding legs of the magnet yoke by at least half their length, that in order to produce the armature restoring force a first end of a biased leaf spring (14) is connected to each one of the two legs of the armature (13), the other end of said leaf spring being connected to the coil former (10), and that the length of the leaf spring is at least equal to the length of the leg of the armature connected thereto.
- Relay according to claim 1, characterized in that said first end of the leaf spring (14) is connected to the armature (13) in a form-locking manner, and that said other end of said spring (14) is connected to the coil former (10) in a force-locking and/or form-locking manner.
- Relay according to claim 2, characterized in that the two springs are connected by a crosspiece to form a one-piece H-shaped spring (14).
- Relay according to claim 1, characterized in that the slider (15) has resilient arms (15.2) with chamferings (15.3) and recesses (15.4) facing each other, and that the armature (13) has a projection with recesses (13.3), in such a manner that the arms of the slider are engageable onto the projection of the armature to produce an acting connection between armature and slider.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT88810810T ATE96575T1 (en) | 1987-11-30 | 1988-11-25 | PCB RELAYS. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH4650/87 | 1987-11-30 | ||
| CH4650/87A CH674431A5 (en) | 1987-11-30 | 1987-11-30 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0319478A2 EP0319478A2 (en) | 1989-06-07 |
| EP0319478A3 EP0319478A3 (en) | 1990-04-25 |
| EP0319478B1 true EP0319478B1 (en) | 1993-10-27 |
Family
ID=4280081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP88810810A Expired - Lifetime EP0319478B1 (en) | 1987-11-30 | 1988-11-25 | Printed circuit board relay |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4914410A (en) |
| EP (1) | EP0319478B1 (en) |
| AT (1) | ATE96575T1 (en) |
| CH (1) | CH674431A5 (en) |
| DE (1) | DE3885246D1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19715913C1 (en) * | 1997-04-16 | 1998-10-08 | Eh Schrack Components Ag | Electromagnetic relay |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE59303588D1 (en) * | 1992-05-15 | 1996-10-02 | Siemens Ag | POLARIZED POWER RELAY |
| JP3545650B2 (en) * | 1999-07-27 | 2004-07-21 | 日本エイ・シィ・アール株式会社 | Electromagnetic device and its driving circuit |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH452704A (en) * | 1965-12-28 | 1968-03-15 | Standard Telephon & Radio Ag | Miniature relay |
| DE1564690B2 (en) * | 1966-08-18 | 1972-09-07 | Siemens AG, 1000 Berlin u 8000 München | UNPOLTED FLAT RELAY IN MINIATURE DESIGN |
| US4122420A (en) * | 1977-01-13 | 1978-10-24 | Esterline Electronics Corporation | Permissive-make electromagnetic switch |
| CH625381A5 (en) * | 1977-12-02 | 1981-09-15 | Standard Telephon & Radio Ag | |
| GB2016211B (en) * | 1978-02-28 | 1982-05-26 | Nippon Electric Co | Flat electromagnetic relay |
| AT357624B (en) * | 1978-04-17 | 1980-07-25 | Itt Austria | ELECTROMAGNETIC RELAY WITH FORCED GUIDED CONTACTS |
| JPS6032221A (en) * | 1983-07-30 | 1985-02-19 | 松下電工株式会社 | Ac drive type electromagnetic relay |
-
1987
- 1987-11-30 CH CH4650/87A patent/CH674431A5/de not_active IP Right Cessation
-
1988
- 1988-11-25 DE DE88810810T patent/DE3885246D1/en not_active Expired - Fee Related
- 1988-11-25 EP EP88810810A patent/EP0319478B1/en not_active Expired - Lifetime
- 1988-11-25 AT AT88810810T patent/ATE96575T1/en not_active IP Right Cessation
- 1988-11-29 US US07/277,200 patent/US4914410A/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| STR-REPORT, Jg. 5, Nr. 2, November 1084, S. 19-24, Zürich; W. Kälin, "MT-Relais - ein Leiterplattenrelais mit 'dual-in-line'-Anschlussbelegung" * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19715913C1 (en) * | 1997-04-16 | 1998-10-08 | Eh Schrack Components Ag | Electromagnetic relay |
| US5894254A (en) * | 1997-04-16 | 1999-04-13 | Eh Schrack Components Ag | Electromagnetic relay |
Also Published As
| Publication number | Publication date |
|---|---|
| CH674431A5 (en) | 1990-05-31 |
| EP0319478A3 (en) | 1990-04-25 |
| DE3885246D1 (en) | 1993-12-02 |
| EP0319478A2 (en) | 1989-06-07 |
| US4914410A (en) | 1990-04-03 |
| ATE96575T1 (en) | 1993-11-15 |
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