EP0144676B1 - Electromagnetic relay and method of making it - Google Patents

Electromagnetic relay and method of making it Download PDF

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Publication number
EP0144676B1
EP0144676B1 EP84112795A EP84112795A EP0144676B1 EP 0144676 B1 EP0144676 B1 EP 0144676B1 EP 84112795 A EP84112795 A EP 84112795A EP 84112795 A EP84112795 A EP 84112795A EP 0144676 B1 EP0144676 B1 EP 0144676B1
Authority
EP
European Patent Office
Prior art keywords
armature
spring
supporting spring
leg
relay
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84112795A
Other languages
German (de)
French (fr)
Other versions
EP0144676A1 (en
Inventor
Werner Minks
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.)
Alcatel Lucent Deutschland AG
Alcatel Lucent NV
Original Assignee
Alcatel SEL AG
Standard Elektrik Lorenz AG
Alcatel NV
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 Alcatel SEL AG, Standard Elektrik Lorenz AG, Alcatel NV filed Critical Alcatel SEL AG
Priority to AT84112795T priority Critical patent/ATE31997T1/en
Publication of EP0144676A1 publication Critical patent/EP0144676A1/en
Application granted granted Critical
Publication of EP0144676B1 publication Critical patent/EP0144676B1/en
Expired 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
    • H01H50/54—Contact arrangements
    • H01H50/60—Contact arrangements moving contact being rigidly combined with movable part of magnetic circuit
    • 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
    • H01H50/26—Parts movable about a knife edge

Definitions

  • the present invention relates to an electromagnetic relay according to the first part of claim 1 and to a method for producing the same.
  • the retaining spring representing an angle is designed as a hinge spring, on the one movable spring leg of which the hinged anchor is riveted. The other spring leg is screwed onto the yoke.
  • the resilient mounting of the hinged anchor in its cutting edge bearing and the generation of the rest contact pressure is achieved by the resilient joint area of the retaining spring. There is no adjustment of the retaining spring relative to the armature or the yoke.
  • the object of the present invention is to be able, despite the possible large scattering ranges of the restoring force of the retaining springs, to be able to precisely define the break contact pressure without great effort and without the use of more expensive spring material and with a low tolerance.
  • a relay according to the invention is shown schematically.
  • a coil body 2 is attached, which carries an excitation coil 3 and is penetrated by a core 4.
  • a bearing edge 6 is formed as a bearing blade on the first yoke leg 5.1, which together with a notch 7 serving as a bearing of an anchor 8 designed as a hinged armature forms a cutting edge bearing 6, 7.
  • a leaf spring 11 serving as a power supply to a normally closed contact 9, 10 is fastened.
  • the leaf spring 11 is designed as an angle and has a free projecting leg 12.
  • the latter is arranged in a direction which is at least approximately in the direction of a spring force generated by a retaining spring 13.
  • the retaining spring 13 is formed in the exemplary embodiment as a one-sided clamped on the second yoke leg 5.2 and the free first spring leg 14 is parallel to the leg 12 of the leaf spring 11 and is z. B. firmly connected by welding or soldering. Both therefore form an overlapping connecting piece 15.
  • the clamped second spring leg 16 of the retaining spring 13 pulls the free spring leg 14 downward and exerts a restoring force on the armature 8 via the leg 12, i.e. he pulls and presses it with its notch 7 against the bearing edge 6 in such a way that it is pulled into the raised position, that is to say the rest position.
  • the normally closed contacts 9, 10 lie on one another with a contact pressure which depends on the restoring spring force of the retaining spring 13.
  • the connection of the free leg 12 to the free first spring leg 14 of the holding spring 13 is made only after these parts have been installed and the restoring force has been set in the process. This is done so that on the clamped second spring leg 16 z. B. acts at the bottom of the bend a defined, the desired restoring force dimensioned pressure force Y.
  • the armature 8 is in one end position, in particular in the rest position, and the normally closed contacts 9, 10 are closed. In this position, the overlapping parts of the retaining spring 13 and the leaf spring 11 are connected to one another.
  • the retaining spring 13 then exerts a restoring force on the armature 8, which is transmitted in the ratio of the distance 17 of the connecting piece 15 from the cutting edge bearing 6, 7 to the distance 18 of the normally closed contact 9, 10 from the cutting edge bearing 6, on the normally closed contact 9, 10.
  • the contact pressure X can be set precisely, independently of the spring characteristic of the holding spring 13. It is therefore also possible 13 different types of relays with different break contact pressures, i.e. also for different currents and voltages, can be produced with a retaining spring.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)

Abstract

A tilting-armature relay having an excitation coil and magnetic core mounted within a housing and supported by a magnet yoke. A tilted armature mounted above the core pivots about a knife-edge bearing and responds to an electromagnetic field. A supporting spring is clamped to the magnet yoke for providing a spring force against the armature and a leaf spring carrying a first of a set of electrical contacts is mounted atop and operates with the armature. The leaf spring is fixedly connected to the supporting spring forming an overlapping connecting piece for connecting the supporting spring to the armature. The supporting spring exerts a pulling force on the leaf spring for providing a restoring force to the armature forcing together the set of electrical contacts and exactly defining a contact pressure therebetween independent of the spring characteristic of the supporting spring.

Description

Die vorliegende Erfindung bezieht sich auf ein elektromagnetisches Relais gemäß dem ersten Teil des Anspruchs 1 und auf ein Verfahren zur Herstellung desselben.The present invention relates to an electromagnetic relay according to the first part of claim 1 and to a method for producing the same.

Ein derartiges Relais ist aus der DE-A-2 939 178 bekannt. Bei diesem ist die einen Winkel darstellende Haltefeder als Gelenkfeder ausgebildet, an deren einem beweglichen Federschenkel der Klappanker aufgenietet ist. Der andere Federschenkel ist am Joch angeschraubt. Die federnde Halterung des Klappankers in seinem Schneidenlager und die Erzeugung des Ruhekontaktdruckes wird durch den federnden Gelenkbereich der Haltefeder erreicht. Eine Justierung der Haltefeder relativ zum Anker oder dem Joch ist nicht vorhanden. Da bei federhartem Material nicht garantiert ist, daß das Band, aus dem die Haltefeder abgestanzt wird, über die gesamte Länge eine homogene Beschaffenheit aufweist, sondern immer wieder Bezirke mit abweichenden Parametern auftreten, kann ein genauer Ruhekontaktdruck nicht gewährleistet werden, da die Rückstellkraft der Haltefeder relativ weit streut.Such a relay is known from DE-A-2 939 178. In this case, the retaining spring representing an angle is designed as a hinge spring, on the one movable spring leg of which the hinged anchor is riveted. The other spring leg is screwed onto the yoke. The resilient mounting of the hinged anchor in its cutting edge bearing and the generation of the rest contact pressure is achieved by the resilient joint area of the retaining spring. There is no adjustment of the retaining spring relative to the armature or the yoke. Since it is not guaranteed with spring-hard material that the tape from which the retaining spring is punched out has a homogeneous quality over the entire length, but that areas with different parameters occur again and again, an exact break contact pressure cannot be guaranteed because the restoring force of the retaining spring scattered relatively far.

Hinzu kommt noch, daß im Bereich der Abwinkelung, die das federnde Gelenk bildet, beim Abwinkeln Gefügeveränderungen im Federmaterial auftreten. Diese führen zu unterschiedlichen Federkonstanten, die eine Konstanz des Ruhekontaktdruckes ebenfalls verhindern.In addition, in the area of the bend, which forms the resilient joint, structural changes occur in the spring material during the bend. These lead to different spring constants, which also prevent constant contact pressure.

Bei einem aus der US-A-3 437 962 bekannten Relais ist die Haltefeder mit einem Federschenkel mit dem Klappanker vernietet und der andere Federschenkel ist mit seinem Ende unter Vorspannung desselben in einem am Jochschenkel angebrachten Haltefinger eingehängt. Auch hier ist keine Justierung der Haltefeder, die eine genaue Einstellung des Ruhekontaktdruckes ermöglichen könnte, vorgesehen.In a relay known from US-A-3 437 962, the retaining spring is riveted to the hinged armature with a spring leg and the other spring leg is hooked with its end under pretension to a retaining finger attached to the yoke leg. Here, too, no adjustment of the retaining spring, which could allow an exact setting of the break contact pressure, is provided.

Die gleichen Effekte treten ein bei elektromagnetischem Relais mit einer Haltefeder aus einem Metallband gemäß der CH-A 206 832 oder mit einer Spiralfeder gemäß der DE-A-2 029 607.The same effects occur with electromagnetic relays with a retaining spring made of a metal strip according to CH-A 206 832 or with a spiral spring according to DE-A-2 029 607.

Mit der vorliegenden Erfindung soll die Aufgabe gelöst werden, trotz der möglichen großen Streubereiche der Rückstellkraft der Haltefedern den Ruhekontaktdruck ohne großen Aufwand und ohne Verwendung von teurerem Federmaterial genau definiert und mit geringer Toleranz herstellen zu können.The object of the present invention is to be able, despite the possible large scattering ranges of the restoring force of the retaining springs, to be able to precisely define the break contact pressure without great effort and without the use of more expensive spring material and with a low tolerance.

Diese Aufgabe wird durch das im Anspruch 1 angegebene Relais und durch das im Anspruch 4 angegebene Verfahren gelöst. Hierdurch ist die Verbindung der Haltefeder mit dem Klappanker bei einer ganz bestimmten Vorspannung der Haltefeder möglich und damit die Rückstellkraft und der Kontaktdruck sehr fein einstellbar.This object is achieved by the relay specified in claim 1 and by the method specified in claim 4. As a result, the connection of the retaining spring to the hinged anchor is possible with a very specific pretensioning of the retaining spring and the restoring force and the contact pressure can thus be adjusted very finely.

Vorteilhafte Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen angegeben und nachfolgend anhand eines in der Zeichnung veranschaulichten Ausführungsbeispieles beschrieben.Advantageous developments of the invention are specified in the dependent claims and described below with reference to an embodiment illustrated in the drawing.

In der Zeichnung ist ein erfindungsgemäßes Relais schematisch dargestellt. In einem Gehäuse 1 ist ein Spulenkörper 2 befestigt, der eine Erregerspule 3 trägt und von einem Kern 4 durchsetzt ist. An einem mit dem Kern verbundenen, als Winkel ausgebildeten Magnetjoch 5 ist am ersten Jochschenkel 5.1 eine Lagerkante 6 als Lagerschneide ausgebildet, die mit einer als Lager dienenden Kerbe 7 eines als Klappanker ausgebildeten Ankers 8 zusammen ein Schneidenlager 6, 7 bildet. Auf dem Anker 8 ist eine als Stromzuleitung zu einem Ruhekontakt 9, 10 dienende Blattfeder 11 befestigt. Die Blattfeder 11 ist als Winkel ausgebildet und besitzt einen freien abstehenden Schenkel 12. Letzterer ist in einer Richtung angeordnet, die wenigstens annähernd in Richtung einer von einer Haltefeder 13 erzeugten Federkraft liegt. Die Haltefeder 13 ist beim Ausführungsbeispiel als am zweiten Jochschenkel 5.2 einseitig eingespannte Winkelfeder ausgebildet und der freie erste Federschenkel 14 liegt parallel am Schenkel 12 der Blattfeder 11 an und ist mit diesem z. B. durch Schweißen oder Löten fest verbunden. Beide bilden daher ein überlappendes Verbindungsstück 15. Der eingespannte zweite Federschenkel 16 der Haltefeder 13 zieht hierbei den freien Federschenkel 14 nach unten und übt über den Schenkel 12 auf den Anker 8 eine Rückstellkraft aus, d.h. er zieht und drückt diesen so mit seiner Kerbe 7 gegen die Lagerkante 6, daß er in die abgehobene, also Ruhelage, gezogen wird. Dabei liegen die Ruhekontakte 9,10 mit einem Kontaktdruck aufeinander, der von der RückstellFederkraft der Haltefeder 13 abhängt.In the drawing, a relay according to the invention is shown schematically. In a housing 1, a coil body 2 is attached, which carries an excitation coil 3 and is penetrated by a core 4. On a magnetic yoke 5 connected to the core and formed as an angle, a bearing edge 6 is formed as a bearing blade on the first yoke leg 5.1, which together with a notch 7 serving as a bearing of an anchor 8 designed as a hinged armature forms a cutting edge bearing 6, 7. On the armature 8, a leaf spring 11 serving as a power supply to a normally closed contact 9, 10 is fastened. The leaf spring 11 is designed as an angle and has a free projecting leg 12. The latter is arranged in a direction which is at least approximately in the direction of a spring force generated by a retaining spring 13. The retaining spring 13 is formed in the exemplary embodiment as a one-sided clamped on the second yoke leg 5.2 and the free first spring leg 14 is parallel to the leg 12 of the leaf spring 11 and is z. B. firmly connected by welding or soldering. Both therefore form an overlapping connecting piece 15. The clamped second spring leg 16 of the retaining spring 13 pulls the free spring leg 14 downward and exerts a restoring force on the armature 8 via the leg 12, i.e. he pulls and presses it with its notch 7 against the bearing edge 6 in such a way that it is pulled into the raised position, that is to say the rest position. The normally closed contacts 9, 10 lie on one another with a contact pressure which depends on the restoring spring force of the retaining spring 13.

Um eine genau definierte Rückstellkraft und damit einen vorbestimmten Kontaktdruck des Ruhekontaktes 9, 10 zu erhalten, wird die Verbindung des freien Schenkels 12 mit dem freien ersten Federschenkel 14 der Haltefeder 13 erst nach der Montage dieser Teile vorgenommen und dabei die Rückstellkraft eingestellt. Dies geschieht so, daß auf dem eingespannten zweiten Federschenkel 16 z. B. unten am Knick eine definierte, der gewünschten Rückstellkraft entsprechend bemessene Druckkraft Y einwirkt. Dabei ist der Anker 8 in der einen Endlage, insbesondere in Ruhelage, und die Ruhekontakte 9, 10 sind geschlossen. In dieser Stellung werden die sich überlappenden Teile der Haltefeder 13 und der Blattfeder 11 miteinander verbunden. Die Haltefeder 13 übt dann auf den Anker 8 eine Rückstellkraft aus, die sich im Verhältnis des Abstandes 17 des Verbindungsstückes 15 vom Schneidenlager 6, 7 zum Abstand 18 des Ruhekontaktes 9, 10 vom Schneidenlager 6, auf den Ruhekontakt 9,10 überträgt. Hierdurch kann in einfacher Weise der Kontaktdruck X unabhängig von der Federcharakteristik der Haltefeder 13 genau eingestellt werden. Es ist daher auch möglich, mit einer Haltefeder 13 verschiedene Relaistypen mit unterschiedlichen Ruhekontaktdrucken, also auch für verschiedene Ströme und Spannungen, herzustellen.In order to obtain a precisely defined restoring force and thus a predetermined contact pressure of the normally closed contact 9, 10, the connection of the free leg 12 to the free first spring leg 14 of the holding spring 13 is made only after these parts have been installed and the restoring force has been set in the process. This is done so that on the clamped second spring leg 16 z. B. acts at the bottom of the bend a defined, the desired restoring force dimensioned pressure force Y. The armature 8 is in one end position, in particular in the rest position, and the normally closed contacts 9, 10 are closed. In this position, the overlapping parts of the retaining spring 13 and the leaf spring 11 are connected to one another. The retaining spring 13 then exerts a restoring force on the armature 8, which is transmitted in the ratio of the distance 17 of the connecting piece 15 from the cutting edge bearing 6, 7 to the distance 18 of the normally closed contact 9, 10 from the cutting edge bearing 6, on the normally closed contact 9, 10. As a result, the contact pressure X can be set precisely, independently of the spring characteristic of the holding spring 13. It is therefore also possible 13 different types of relays with different break contact pressures, i.e. also for different currents and voltages, can be produced with a retaining spring.

Claims (4)

1. Electromagnetic relay comprising an armature (8), designed as a hinged armature, capable of tilting around a knife-edge bearing (6, 7) and directly or indirectly actuating the relay contacts, which armature (8) is pressed against the bearing edge (6) and pulled into the lift-poff position by a supporting spring (13) connected to the first armature (8) and running perpendicular to the tilt axis of the armature (8) and approximately along the first yoke leg (5.1), having upon it the bearing edge (6), characterized in that between the supporting spring (13) running along the said first yoke leg (5.1) and the bearing edge (6) there is provided a distance (17) serving as a lever arm, that the connection of the supporting spring (13) with the armature (8) is made in the area of the armature end containing the bearing (7) and that the spring force of the supporting spring (13) is directed away from the armature (8) in the direction in which said spring (13) is extends away from the armature (8) along the said first yoke leg (5.1).
2. A relay as claimed in Claim 1, characterized in that said supporting spring (13) is designed as an angular spring whose free first spring leg (14) extends along the said first yoke leg (5.1) while the second spring leg (16) is attached to a second yoke leg (5.2) which runs perpendicularly to said first yoke leg (5.1).
3. A relay as claimed in Claim 2, characterized in that there is attached to the armature (8) an angled leaf spring (11) whose free leg (12) is connected, overlapping, with the free first spring leg (14) of said supporting spring (13).
4. A method of manufacturing a relay having at least one normally closed contact and an armature holder as claimed in any one of Claims 1 to 3, characterized in that the armature (8) is brought into its rest position, that said supporting spring (13) running along the first yoke leg (5.1) is then deflected with a predetermined force (Y) corresponding to the desired contact pressure in the state of rest and that the armature (8) is connected to the supporting spring (13) in this position of the supporting spring (13).
EP84112795A 1983-10-28 1984-10-24 Electromagnetic relay and method of making it Expired EP0144676B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84112795T ATE31997T1 (en) 1983-10-28 1984-10-24 ELECTROMAGNETIC RELAY AND METHOD OF MANUFACTURE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833339082 DE3339082A1 (en) 1983-10-28 1983-10-28 ELECTROMAGNETIC RELAY AND METHOD FOR PRODUCING THE SAME
DE3339082 1983-10-28

Publications (2)

Publication Number Publication Date
EP0144676A1 EP0144676A1 (en) 1985-06-19
EP0144676B1 true EP0144676B1 (en) 1988-01-13

Family

ID=6212918

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84112795A Expired EP0144676B1 (en) 1983-10-28 1984-10-24 Electromagnetic relay and method of making it

Country Status (6)

Country Link
US (1) US4599593A (en)
EP (1) EP0144676B1 (en)
JP (1) JPS60175334A (en)
AT (1) ATE31997T1 (en)
CA (1) CA1234594A (en)
DE (2) DE3339082A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3640737A1 (en) * 1986-11-28 1988-06-09 Bosch Gmbh Robert ELECTROMAGNETIC RELAY
DE3817571C2 (en) * 1988-05-24 1993-12-16 Hengstler Bauelemente Electromagnetic relay
US5497860A (en) * 1994-08-15 1996-03-12 Venturedyne Limited Electromagnetic brake with improved magnet structure
DE102014103247A1 (en) * 2014-03-11 2015-09-17 Tyco Electronics Austria Gmbh Electromagnetic relay
US11990274B2 (en) 2021-07-21 2024-05-21 Dana Automotive Systems Group, Llc Electromagnetic solenoid actuator and method for operation of an electromagnetic solenoid actuator

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH206832A (en) * 1938-03-02 1939-08-31 Fischer Martin Electromagnet, in particular for electric clocks and switching apparatus.
US3117255A (en) * 1961-01-04 1964-01-07 Hamilton Watch Co Electromagnet for winding automobile clocks
NL275584A (en) * 1961-03-06 1900-01-01
DE1891868U (en) * 1964-02-27 1964-04-30 Kienzle Apparate Gmbh ANCHOR SPRING FOR FOLDING ARM MAGNETS.
NL6613165A (en) * 1966-09-17 1968-03-18
US3437962A (en) * 1967-06-12 1969-04-08 American Mach & Foundry Clapper type relay with improved armature
US3474367A (en) * 1968-03-06 1969-10-21 Allied Control Co Relay motor
DE2029607C3 (en) * 1970-06-16 1974-07-18 Felten & Guilleaume Schaltanlagen Gmbh, 4150 Krefeld Plastic housing for relays
JPS5815893B2 (en) * 1978-11-01 1983-03-28 オムロン株式会社 electromagnetic relay
US4323869A (en) * 1979-06-15 1982-04-06 Itt Industries, Inc. Armature mount for an electromagnetic relay
DE3008783C2 (en) * 1980-03-07 1984-04-19 Standard Elektrik Lorenz Ag, 7000 Stuttgart Relay with an angle armature

Also Published As

Publication number Publication date
DE3468778D1 (en) 1988-02-18
DE3339082A1 (en) 1985-05-09
ATE31997T1 (en) 1988-01-15
CA1234594A (en) 1988-03-29
US4599593A (en) 1986-07-08
EP0144676A1 (en) 1985-06-19
JPS60175334A (en) 1985-09-09

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