EP0068280A2 - Magnetically operated electrical contact arrangement - Google Patents

Magnetically operated electrical contact arrangement Download PDF

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Publication number
EP0068280A2
EP0068280A2 EP82105222A EP82105222A EP0068280A2 EP 0068280 A2 EP0068280 A2 EP 0068280A2 EP 82105222 A EP82105222 A EP 82105222A EP 82105222 A EP82105222 A EP 82105222A EP 0068280 A2 EP0068280 A2 EP 0068280A2
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EP
European Patent Office
Prior art keywords
contact arrangement
leg
magnetic circuit
contact
permanent magnet
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
EP82105222A
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German (de)
French (fr)
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EP0068280B1 (en
EP0068280A3 (en
Inventor
Richard Dr. Boll
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.)
Vacuumschmelze GmbH and Co KG
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Vacuumschmelze GmbH and Co KG
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Priority to AT82105222T priority Critical patent/ATE33731T1/en
Publication of EP0068280A2 publication Critical patent/EP0068280A2/en
Publication of EP0068280A3 publication Critical patent/EP0068280A3/en
Application granted granted Critical
Publication of EP0068280B1 publication Critical patent/EP0068280B1/en
Expired legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H36/0006—Permanent magnet actuating reed switches
    • 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
    • H01H51/00—Electromagnetic relays
    • H01H51/28—Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed
    • H01H51/284—Polarised relays

Definitions

  • the invention relates to a magnetically actuated electrical contact arrangement with a largely closed magnetic circuit.
  • the object of the invention is to provide such a contact arrangement which is constructed from a few parts and can be produced particularly simply and with small dimensions.
  • This contact arrangement preferably uses a band of a largely amorphous alloy, which can be obtained from a melt by rapid cooling if, for example, in addition to the magnetic material such as iron, cobalt and / or nickel, a metalloid such as boron or silicon is present in an amount from 15 to 25 atomic% is contained in the alloy.
  • a metalloid such as boron or silicon is present in an amount from 15 to 25 atomic% is contained in the alloy.
  • Such Material is electrically conductive, has good soft magnetic properties and is mechanically hard and therefore elastically deformable, so that it also has good spring properties.
  • the magnetic circuit consists of two U-shaped strips made of a soft magnetic material with good spring properties, the open sides of which are inserted into one another, with an electrical conductor on each strip is connectable that one leg of each band is attached to opposite sides of at least one insulating piece and that each leg of each band, at least one of which is not connected to the insulating piece, are spaced apart so that they magnetize the touch magnetic circuit with elastic deformation of at least one band and thus make a contact.
  • FIG. 1 shows the contact arrangement according to the invention, which is designed here as a relay.
  • two bands 1 and 2 bent into a U-shape are inserted into one another and into a coil 3.
  • the leg 4 of a band 1 is fastened to the lower side of an insulating piece 6, while the leg 5 of a band 2 is firmly connected to the upper side of the insulating piece 6.
  • the remaining legs 7 and 8 of the bands 1 and 2 are provided with supports 9 and 10 made of an electrically highly conductive and erosion-resistant material, as is customary, for example, with relay contacts. Between the legs 7 and 8 of the Bands 1 and 2 is a gap when the coil 3 is not energized.
  • the tapes 1 and 2 are again inserted with their upper sides and provided with connection points 11 and 12 for connecting electrical conductors 13 and 14.
  • the two inner legs 4 and 8 are attached to the two sides of an insulating piece 6; the upper leg 5 of the band 2 is fixed relative to the leg 4 of the band 1, for example by attachment to the wall of a housing 15.
  • the housing 15 has between the legs 4 and 5 an incision 16 into which a disk-shaped permanent magnet 17 can be inserted. This replaces the winding of the coil 3 in Figure 1, so that the arrangement can serve as a limit switch. It is also possible to pull a tape with individual magnetized sections 16 through it and to achieve this by actuating the contact arrangement periodically.
  • magnetization has the effect that an attractive force occurs between the legs 7 and 8; however, the Embodiment according to Figure 2 only move the leg 7 upwards until the contact is made.
  • Figure 3 shows an embodiment in which the contact arrangement according to the invention can be used as a current sensor in an electrical cable.
  • the tapes 1 and 2 are placed around in a housing 18 with an inner opening 19.
  • An electrical conductor 20 or an electrical cable can be inserted through the inner opening 19, the current of which causes a magnetic field in the bands 1 and 2 and the switching of the contact arrangement in the manner described.
  • FIG. 4 shows an arrangement in which the contact arrangement according to the invention acts as a direct current relay with a normally closed contact.
  • the leg 4 of the tape 1 is not attached directly to the lower side of the insulating piece 6, but there is a permanent magnet 21 between the leg 4 and the insulating piece 6. This has the consequence that when the coil 3 is de-energized, the Pads 9 and 10 of the legs 7 and 8 touch each other. If a current is now allowed to flow through the coil 3, the flux in the magnetic circuit formed from the bands 1 and 2 is increased or weakened depending on the direction of the current. Since the strips 1 and 2 are mechanically prestressed in the position shown in FIG.
  • the legs 7 and 8 will move apart from one another when the magnetic flux is weakened, and so the existing contact between the supports will be reached when a certain direct current is reached in the turns of the coil 3 Open 9 and 10. If the direct current in the coil 3 continues to rise, the direction of the magnetic flux in the magnetic circuit is then reversed and the contact is restored.
  • This arrangement can therefore be used to indicate whether the current in the coil 3 or in a plugged-in electrical conductor according to FIG. 3 complies with a certain range or not.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Contacts (AREA)
  • Magnetic Treatment Devices (AREA)
  • Electromagnets (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

Zur Bildung von Relais, Endschaltern oder dergleichen werden elektrische Kontakte verwendet, die sich unter Einfluß eines Magnetfeldes öffnen bzw. schließen.Electrical contacts that open or close under the influence of a magnetic field are used to form relays, limit switches or the like.

Unter Verwendung von weichmagnetischem Material mit guten Federeigenschaften, das vorzugsweise aus einer weitgehend amorphen Legierung besteht, wird eine besonders einfach aufgebaute und empfindlich reagierende Kontaktanordnung vorgeschlagen, bei der Kontaktfeder, magentischer Kreis und magnetische Zuleitung aus lediglich zwei Bauteilen (Bänder 1 und 2) besteht.

Figure imgaf001
Using soft magnetic material with good spring properties, which preferably consists of a largely amorphous alloy, a particularly simple and sensitive contact arrangement is proposed, in which the contact spring, magnetic circuit and magnetic lead consist of only two components (bands 1 and 2).
Figure imgaf001

Description

Die Erfindung betrifft eine magnetisch zu betätigende elektrische Kontaktanordnung mit einem weitgehend geschlossenen magnetischen Kreis.The invention relates to a magnetically actuated electrical contact arrangement with a largely closed magnetic circuit.

Aufgabe der Erfindung ist es, eine derartige Kontaktanordnung zu schaffen, die aus wenigen Teilen aufgebaut ist und besonders einfach und mit kleinen Abmessungen hergestellt werden kann.The object of the invention is to provide such a contact arrangement which is constructed from a few parts and can be produced particularly simply and with small dimensions.

Vorzugsweise wird bei dieser Kontaktanordnung Band aus einer weitgehend amorphen Legierung verwendet, die durch schnelles Abkühlen aus einer Schmelze erhalten werden kann, wenn beispielsweise außer dem magnetischen Material, wie Eisen, Kobalt und/oder Nickel ein Metalloid, wie z.B. Bor oder Silizium in einer Menge von 15 bis 25 Atom.-% in der Legierung enthalten ist. Derartiges Material ist elektrisch leitfähig, besitzt gute weichmagnetische Eigenschaften und ist mechanisch hart und damit elastisch verformbar, so daß es außerdem gute Federeigenschaften besitzt.This contact arrangement preferably uses a band of a largely amorphous alloy, which can be obtained from a melt by rapid cooling if, for example, in addition to the magnetic material such as iron, cobalt and / or nickel, a metalloid such as boron or silicon is present in an amount from 15 to 25 atomic% is contained in the alloy. Such Material is electrically conductive, has good soft magnetic properties and is mechanically hard and therefore elastically deformable, so that it also has good spring properties.

Unter Verwendung von derartigem Material erhält man eine besonders vorteilhafte elektrische Kontaktanordnung erfindungsgemäß dadurch, daß der magnetische Kreis aus zwei U-förmig gebogenen Bändern aus einem weichmagnetischen Material mit guten Federeigenschaften besteht, die mit ihren offenen Seiten ineinandergesteckt sind, daß an jedes Band ein elektrischer Leiter anschließbar ist, daß je ein Schenkel jedes Bandes an einander gegenüberliegenden Seiten mindestens eines Isolierstückes befestigt ist und daß weiterhin je ein Schenkel jedes Bandes, von denen mindestens einer nicht mit dem Isolierstück verbunden ist, mit Abstand nebeneinander liegen, so daß sie bei einer Magnetisierung des magnetischen Kreises unter elastischer Verformung mindestens eines Bandes sich berühren und damit einen Kontakt schließen.Using such a material, a particularly advantageous electrical contact arrangement is obtained according to the invention in that the magnetic circuit consists of two U-shaped strips made of a soft magnetic material with good spring properties, the open sides of which are inserted into one another, with an electrical conductor on each strip is connectable that one leg of each band is attached to opposite sides of at least one insulating piece and that each leg of each band, at least one of which is not connected to the insulating piece, are spaced apart so that they magnetize the touch magnetic circuit with elastic deformation of at least one band and thus make a contact.

Figur 1 zeigt die erfindungsgemäße Kontaktanordnung, die hier als Relais ausgebildet ist. Dazu sind zwei U-förmig gebogene Bänder 1 und 2 ineinander und in eine Spule 3 gesteckt. Dabei ist der Schenkel 4 eines Bandes 1 an der unteren Seite eines Isolierstückes 6 befestigt, während der Schenkel 5 eines Bandes 2 mit der oberen Seite des Isolierstückes 6 fest verbunden ist. Die übrigen Schenkel 7 und 8 der Bänder 1 und 2 sind mit Auflagen 9 und 10 aus einem elektrisch gut leitenden und abbrandfesten Material versehen, wie es beispielsweise bei Relaiskontakten üblich ist. Zwischen den Schenkeln 7 und 8 der Bänder 1 und 2 befindet sich bei nicht erregter Spule 3 ein Zwischenraum.Figure 1 shows the contact arrangement according to the invention, which is designed here as a relay. For this purpose, two bands 1 and 2 bent into a U-shape are inserted into one another and into a coil 3. The leg 4 of a band 1 is fastened to the lower side of an insulating piece 6, while the leg 5 of a band 2 is firmly connected to the upper side of the insulating piece 6. The remaining legs 7 and 8 of the bands 1 and 2 are provided with supports 9 and 10 made of an electrically highly conductive and erosion-resistant material, as is customary, for example, with relay contacts. Between the legs 7 and 8 of the Bands 1 and 2 is a gap when the coil 3 is not energized.

Wird nun die Spule 3 durch Anlage eines Gleich- oder Wechselstromfeldes erregt, so entsteht in den Bändern 1 und 2 ein magnetischer Fluß und die Schenkel 7 und 8 ziehen sich an bis sich die Auflagen 9 und 10 berühren und die Bänder 1 und 2 elektrisch miteinander verbinden. Die Bänder 1 und 2 sind über Anschlußpunkte 11 und 12 mit elektrischen Leitern 13 und 14 verbunden, die die Zuleitungen zu der elektrischen Kontaktanordnung darstellen.If the coil 3 is now excited by the application of a direct or alternating current field, a magnetic flux is generated in the bands 1 and 2 and the legs 7 and 8 attract each other until the supports 9 and 10 touch and the bands 1 and 2 electrically connect. The tapes 1 and 2 are connected via connection points 11 and 12 to electrical conductors 13 and 14, which represent the feed lines to the electrical contact arrangement.

In Figur 2 sind wiederum die Bänder 1 und 2 mit ihren oberen Seiten ineinandergesteckt und mit Anschlußpunkten 11 und 12 zum Anschluß elektrischer Leiter 13 und 14 versehen. Im Gegensatz zu Figur 1 sind die beiden inneren Schenkel 4 und 8 an den beiden Seiten eines Isolierstückes 6 befestigt; der obere Schenkel 5 des Bandes 2 ist - beispielsweise durch Befestigung an der Wand eines Gehäuses 15 - gegenüber dem Schenkel 4 des Bandes 1 fixiert. Das Gehäuse 15 besitzt zwischen den Schenkeln 4 und 5 einen Einschnitt 16, in den ein scheibenförmiger Dauermagnet 17 eingeschoben werden kann. Dieser ersetzt die Wicklung der Spule 3 in Figur 1, so daß die Anordnung als Endschalter dienen kann. Es ist weiterhin auch möglich, ein Band mit einzelnen aufmagnetisierten Abschnitten 16 hindurchzuziehen und dadurch zu erreichen, daß die Kontaktanordnung periodisch betätigt wird. Wie im Ausführungsbeispiel nach Figur 1 bewirkt eine Magnetisierung, daß zwischen den Schenkeln 7 und 8 eine Anziehungskraft auftritt; allerdings wird sich beim Ausführungsbeispiel nach Figur 2 lediglich der Schenkel 7 nach oben bewegen, bis der Kontakt hergestellt ist.In Figure 2, the tapes 1 and 2 are again inserted with their upper sides and provided with connection points 11 and 12 for connecting electrical conductors 13 and 14. In contrast to Figure 1, the two inner legs 4 and 8 are attached to the two sides of an insulating piece 6; the upper leg 5 of the band 2 is fixed relative to the leg 4 of the band 1, for example by attachment to the wall of a housing 15. The housing 15 has between the legs 4 and 5 an incision 16 into which a disk-shaped permanent magnet 17 can be inserted. This replaces the winding of the coil 3 in Figure 1, so that the arrangement can serve as a limit switch. It is also possible to pull a tape with individual magnetized sections 16 through it and to achieve this by actuating the contact arrangement periodically. As in the exemplary embodiment according to FIG. 1, magnetization has the effect that an attractive force occurs between the legs 7 and 8; however, the Embodiment according to Figure 2 only move the leg 7 upwards until the contact is made.

Figur 3 zeigt ein Ausführungsbeispiel, bei dem die erfindungsgemäße Kontaktanordnung als Stromsensor in einem elektrischen Kabel verwendet werden kann. Hierzu sind die Bänder 1 und 2 in einem Gehäuse 18 mit einer inneren Öffnung 19 herumgelegt. Durch die innere Öffnung 19 kann ein elektrischer Leiter 20 bzw. ein elektrisches Kabel gesteckt werden, dessen Strom ein Magnetfeld in den Bändern 1 und 2 und die Schaltung der Kontaktanordnung in der beschriebenen Weise bewirkt.Figure 3 shows an embodiment in which the contact arrangement according to the invention can be used as a current sensor in an electrical cable. For this purpose, the tapes 1 and 2 are placed around in a housing 18 with an inner opening 19. An electrical conductor 20 or an electrical cable can be inserted through the inner opening 19, the current of which causes a magnetic field in the bands 1 and 2 and the switching of the contact arrangement in the manner described.

Figur 4 zeigt eine Anordnung, bei der die erfindungsgemäße Kontaktanordnung als Gleichstromrelais mit Ruhekontakt wirkt. Im Unterschied zu Figur 1 ist der Schenkel 4 des Bandes 1 nicht unmittelbar an der unteren Seite des Isolierstückes 6 befestigt, sondern es befindet sich zwischen dem Schenkel 4 und dem Isolierstück 6 ein Dauermagnet 21. Dies hat zur Folge, daß bei stromloser Spule 3 die Auflagen 9 und 10 der Schenkel 7 und 8 einander berühren. Läßt man nun einen Strom durch die Spule 3 fließen, so wird abhängig von der Stromrichtung der Fluß in dem aus den Bändern 1 und 2 gebildeten magnetischen Kreis verstärkt oder abgeschwächt. Da die Bänder 1 und 2 in der in Figur 4 gezeigten Lage mechanisch vorgespannt sind, werden sich bei Abschwächung des magnetischen Flusses die Schenkel 7 und 8 voneinander entfernen und so bei Erreichen eines bestimmten Gleichstromes in den Windungen der Spule 3 den bestehenden Kontakt zwischen den Auflagen 9 und 10 öffnen. Bei weiter ansteigendem Gleichstrom in der Spule 3 wird dann die Richtung des Magnetflusses im magnetischen Kreis umgekehrt und der Kontakt wird wieder hergestellt. Diese Anordnung läßt sich also verwenden, um anzuzeigen, ob der Strom in der Spule 3 oder in einem durchgesteckten elektrischen Leiter entsprechend Figur 3 einen bestimmten Bereich einhält oder nicht.FIG. 4 shows an arrangement in which the contact arrangement according to the invention acts as a direct current relay with a normally closed contact. In contrast to Figure 1, the leg 4 of the tape 1 is not attached directly to the lower side of the insulating piece 6, but there is a permanent magnet 21 between the leg 4 and the insulating piece 6. This has the consequence that when the coil 3 is de-energized, the Pads 9 and 10 of the legs 7 and 8 touch each other. If a current is now allowed to flow through the coil 3, the flux in the magnetic circuit formed from the bands 1 and 2 is increased or weakened depending on the direction of the current. Since the strips 1 and 2 are mechanically prestressed in the position shown in FIG. 4, the legs 7 and 8 will move apart from one another when the magnetic flux is weakened, and so the existing contact between the supports will be reached when a certain direct current is reached in the turns of the coil 3 Open 9 and 10. If the direct current in the coil 3 continues to rise, the direction of the magnetic flux in the magnetic circuit is then reversed and the contact is restored. This arrangement can therefore be used to indicate whether the current in the coil 3 or in a plugged-in electrical conductor according to FIG. 3 complies with a certain range or not.

Wenn man zwei Anordnungen, wie sie in Figur 4 dargestellt sind, nebeneinander anordnet, wobei die Magnetisierungsrichtung des Dauermagneten 21 verschieden gewählt ist, und wenn man beide Anordnungen mit einer gemeinsamen Spule versieht, so gewinnt man eine Kontaktanordnung mit zwei Kontakten, die bei niedrigem Strom beide geschlossen sind und von denen sich jeweils einer abhängig von der Stromrichtung bei ansteigendem Strom öffnet. Das Gleiche läßt sich auch dann erreichen, wenn man bei gleicher Magnetisierungsrichtung der beiden Dauermagnete 21 den Strom in unterschiedlicher Richtung durch das Innere des aus den Bändern 1 und 2 gebildeten magnetischen Kreises fließen läßt.If two arrangements, as shown in FIG. 4, are arranged side by side, the direction of magnetization of the permanent magnet 21 being selected differently, and if both arrangements are provided with a common coil, a contact arrangement with two contacts is obtained, which has a low current both are closed and one of them opens depending on the direction of the current as the current increases. The same can also be achieved if, with the same magnetization direction of the two permanent magnets 21, the current is allowed to flow in different directions through the interior of the magnetic circuit formed by the strips 1 and 2.

Claims (6)

1. Magnetisch zu betätigende elektrische Kontaktanordnung mit einem weitgehend geschlossenen magnetischen Kreis, dadurch gekennzeichnet , daß der magnetische Kreis aus zwei U-förmig gebogenen Bändern (1, 2) aus einem weichmagnetischen Material mit guten Federeigenschaften besteht, die mit ihren offenen Seiten ineinandergesteckt sind, daß an jedes Band ein elektrischer Leiter (13, 14) anschließbar ist, daß je ein Schenkel (4, 5 oder 4, 8) jedes Bandes (1, 2) an einander gegenüberliegenden Seiten mindestens eines Isolierstükkes (6) befestigt ist und daß weiterhin je ein Schenkel (7, 8 oder 7) jedes Bandes, von denen mindestens einer nicht mit dem Isolierstück (6) verbunden ist, mit Abstand nebeneinander liegen, so daß sie bei einer Magnetisierung des magnetischen Kreises unter elastischer Verformung mindestens eines Bandes sich berühren und damit einen Kontakt schließen.1. Magnetically actuated electrical contact arrangement with a largely closed magnetic circuit, characterized in that the magnetic circuit consists of two U-shaped strips (1, 2) made of a soft magnetic material with good spring properties, which are inserted into one another with their open sides, that an electrical conductor (13, 14) can be connected to each band, that one leg (4, 5 or 4, 8) of each band (1, 2) is attached to opposite sides of at least one insulating piece (6) and that further one leg (7, 8 or 7) of each band, at least one of which is not connected to the insulating piece (6), are spaced apart so that they touch and magnetize the magnetic circuit with elastic deformation of at least one band and make a contact with it. 2. Kontaktanordnung nach Anspruch 1, dadurch gekennzeichnet , daß zur Magnetisierung des magnetischen Kreises die U-förmig gebogenen Bänder (1, 2) in eine elektrische Spule (3) eingesteckt sind.2. Contact arrangement according to claim 1, characterized in that for magnetizing the magnetic circuit, the U-shaped strips (1, 2) are inserted into an electrical coil (3). 3. Kontaktanordnung nach Anspruch 1, dadurch gekennzeichnet , daß die U-förmig gebogenen Bänder (1, 2) in einem Gehäuse (18) mit einer das Innere der Bänder durchdringenden Öffnung angeordnet sind und daß durch die Öffnung (19) des Gehäuses ein elektrischer Leiter (20) hindurchgeführt ist.3. Contact arrangement according to claim 1, characterized in that the U-shaped strips (1, 2) are arranged in a housing (18) with an opening penetrating the interior of the strips and that an electrical through the opening (19) of the housing Head (20) is passed. 4. Kontaktanordnung nach Anspruch 1, dadurch gekennzeichnet , daß die inneren Schenkel (4, 8) der ineinandergesteckten U-förmigen Bänder (1, 2) an einander gegenüberliegenden Seiten eines Isolierstückes (6) befestigt sind, daß zwischen einem dieser inneren Schenkel (4) und dem benachbarten äußeren Schenkel (5) der ineinandergesteckten U-förmigen Bänder (1, 2) ein Einschnitt (16) vorgesehen ist, in den ein Dauermagnet (17) eingeschoben werden kann, so daß die aus Dauermagnet und Kontaktanordnung gebildete Einrichtung als Endschalter einsetzbar ist.4. Contact arrangement according to claim 1, characterized in that the inner legs (4, 8) of the nested U-shaped tapes (1, 2) on opposite sides of an insulating piece (6) are fastened that between one of these inner legs (4th ) and the adjacent outer leg (5) of the nested U-shaped bands (1, 2), an incision (16) is provided, into which a permanent magnet (17) can be inserted, so that the device formed from permanent magnet and contact arrangement as a limit switch can be used. 5. Kontaktanordnung nach Anspruch 1, dadurch gekennzeichnet , daß zwischen einem Schenkel (4) der ineinandergesteckten U-förmigen Bänder (1, 2) und der Oberfläche des Isolierstückes (6), an dem dieser Schenkel zu befestigen ist, ein Dauermagnet (21) angeordnet ist, daß zur Entmagnetisierung des magnetischen Kreises um die ineinandergesteckten Bänder (1, 2) eine elektrische Spule (3) herumgewickelt ist und daß die zur Kontaktgabe vorgesehenen Schenkel (7, 8) der ineinandergesteckten Bänder (1, 2) bei stromloser Spule (3) durch die vom Dauermagneten (21) erzeugte Induktion unter Vorspannung aneinander haften.5. Contact arrangement according to claim 1, characterized in that between a leg (4) of the nested U-shaped bands (1, 2) and the surface of the insulating piece (6) to which this leg is to be fastened, a permanent magnet (21) It is arranged that an electrical coil (3) is wound around the nested tapes (1, 2) to demagnetize the magnetic circuit and that the legs (7, 8) of the nested tapes (1, 2) are used to make contact when the coil is de-energized ( 3) adhere to each other under tension by the induction generated by the permanent magnet (21). 6. Kontaktanordnung nach Anspruch 5, dadurch gekennzeichnet , daß mindestens zwei mit einem Dauermagneten (21) versehene Kontaktanordnungen mit einer gemeinsamen Spule (3) versehen sind und daß sich die Magnetisierungsrichtung der beiden Dauermagnete voneinander unterscheidet.6. Contact arrangement according to claim 5, characterized in that at least two with a permanent magnet (21) provided contact arrangements are provided with a common coil (3) and that the magnetization direction of the two permanent magnets differs from one another.
EP82105222A 1981-06-27 1982-06-15 Magnetically operated electrical contact arrangement Expired EP0068280B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82105222T ATE33731T1 (en) 1981-06-27 1982-06-15 MAGNETICALLY ACTUATED ELECTRICAL CONTACT ARRANGEMENT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3125346A DE3125346A1 (en) 1981-06-27 1981-06-27 MAGNETICALLY OPERATING ELECTRICAL CONTACT ARRANGEMENT
DE3125346 1981-06-27

Publications (3)

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EP0068280A2 true EP0068280A2 (en) 1983-01-05
EP0068280A3 EP0068280A3 (en) 1985-05-02
EP0068280B1 EP0068280B1 (en) 1988-04-20

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EP82105222A Expired EP0068280B1 (en) 1981-06-27 1982-06-15 Magnetically operated electrical contact arrangement

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EP (1) EP0068280B1 (en)
JP (1) JPS5840722A (en)
AT (1) ATE33731T1 (en)
DE (2) DE3125346A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200251296A1 (en) * 2019-02-06 2020-08-06 Honeywell International Inc. Reed switch assembly having a customizable length of activation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3278871A (en) * 1965-01-06 1966-10-11 Bell Telephone Labor Inc Switching device having curved contacts arranged for end-on engagement
GB1384528A (en) * 1971-06-19 1975-02-19 Solartron Electronic Group Scanner units
US3869684A (en) * 1973-04-06 1975-03-04 Int Standard Electric Corp Bistable latching relay
FR2285705A2 (en) * 1974-09-18 1976-04-16 Materiel Telephonique MINIATURE CROSSING POINT

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Publication number Publication date
JPS5840722A (en) 1983-03-09
DE3125346A1 (en) 1983-01-20
EP0068280B1 (en) 1988-04-20
EP0068280A3 (en) 1985-05-02
DE3278378D1 (en) 1988-05-26
ATE33731T1 (en) 1988-05-15

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