EP0471893A2 - Contact spring set for high electrical currents - Google Patents

Contact spring set for high electrical currents Download PDF

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Publication number
EP0471893A2
EP0471893A2 EP90124632A EP90124632A EP0471893A2 EP 0471893 A2 EP0471893 A2 EP 0471893A2 EP 90124632 A EP90124632 A EP 90124632A EP 90124632 A EP90124632 A EP 90124632A EP 0471893 A2 EP0471893 A2 EP 0471893A2
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EP
European Patent Office
Prior art keywords
contact
contact spring
contact member
spring set
section
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.)
Withdrawn
Application number
EP90124632A
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German (de)
French (fr)
Other versions
EP0471893A3 (en
Inventor
Richard Siepmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
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Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0471893A2 publication Critical patent/EP0471893A2/en
Publication of EP0471893A3 publication Critical patent/EP0471893A3/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force

Definitions

  • the invention relates to a contact spring set for high electrical currents with two elongated contact members arranged approximately parallel with their respective main parts, each of which is fastened at one end and can be moved relative to one another with its opposite free ends for the purpose of making contact.
  • Such a contact spring set of conventional type is shown with its basic structure in FIG. 3.
  • a fixed contact spring 21 and a movable contact spring 22 are each clamped on one side in a carrier 23. In the vicinity of their free ends, they carry contact pieces 24 and 25 which touch one another in a switching position and thus make contact.
  • the movable contact spring 22 is pressed by an actuator 26 against the fixed contact spring 21 (in the direction of arrow 27), whereby the contact force is generated.
  • the contact force could also be generated by appropriate pretensioning of the movable contact spring 22, which would then result in a break contact. To open the contact, an actuator would then have to act against arrow 27.
  • the contact forces required to carry high impulse currents can no longer be generated with the volume-reduced magnet system.
  • the parallel contact springs are pushed apart by the electrodynamic forces, so that a contact opening occurs during the current pulse. This results in a powerful arc that can lead to welding of the contacts.
  • Such pulse currents can e.g. B. short-circuit currents of 1000 A, while the relay itself is only designed for a continuous current of 6 A, for example.
  • the object of the invention is to provide a contact spring set of the type mentioned at the outset, which solves the above-mentioned problem, in which no contact opening is possible due to the electrodynamic forces even when very high currents occur.
  • this object is achieved in that the contacting section of the first contact member is provided on a section bent in a bow shape from the main part and encompassing the second contact member, such that the contacting section of the second contact member lies between the main part and the contacting section of the first contact member.
  • the contact point between the two contact members is therefore of the parallel contact members by a corresponding bow-shaped design of a contact-making section so to speak turned outwards so that it no longer lies between the main parts of the two contact members or contact springs, but on the outside of the one contact member.
  • the switching movement and the direction of the contact force are thus reversed, so that the electrodynamic forces between the main parts of the two contact members no longer counteract the contact force, but even amplify it.
  • the contact spring set described in FIG. 1 has a fixed contact spring 1 and a movable contact spring 2, both of which are anchored at one end in a carrier 3.
  • the free end 2a of the movable contact spring is bent in a U-shape around the free end 1a of the fixed contact spring, so that the contacting section 2b with its contact piece 5 faces the outside of the fixed contact spring with its contact piece 4.
  • the closed state of the contact shown in Figure 1 is generated by an actuator 6 which is moved in the direction of arrow 7 and thus generates the contact force. If a very high pulse current i is now sent through the closed contact, electrodynamic forces 8 act which try to push the main parts of the contact springs 1 and 2 apart. However, since the contact between the outside of the fixed contact spring 1 and the bent section 2b, the electrodynamic forces act in the direction of the contact force and amplify it.
  • the principle of reversing the direction of contact force shown in FIG. 1 can also be used analogously for modified contact spring sets, also for break contacts.
  • FIG. 1 A further example of an NC contact is shown in FIG.
  • a fixed contact spring 11 with a movable contact spring 12 is arranged in such a way that a bow-shaped section 11a carries a contact-making section 11b on the outside of the movable contact spring 12.
  • the contact pieces 14 and 15 are in contact with each other in the example shown, since it is an NC contact, that is, a bias in the direction of arrow 17 keeps the contact closed in the idle state.
  • this contact can be opened when actuated. In this case too, a current pulse acts with the resulting electrodynamic forces in the sense of closing the contact, so that a bouncing or an arc is also avoided in this case.

Landscapes

  • Contacts (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Push-Button Switches (AREA)

Abstract

The contact pieces in the contact arrangement are not arranged between the two contact springs (1, 2), but between the outside of a contact spring (1) and a bent section (2a, 2b) of the second contact spring, which engages around the first like a clip. In consequence, the electrodynamic forces which occur between the two contact springs (1, 2) if the current direction is reversed no longer act against the contact force, but in fact reinforce it. <IMAGE>

Description

Die Erfindung betrifft einen Kontaktfedersatz für hohe elektrische Ströme mit zwei langgestreckten, mit ihrem jeweiligen Hauptteil annähernd parallel angeordneten Kontaktgliedern, welche jeweils mit einem Ende befestigt und mit ihren entgegengesetzten freien Enden zum Zwecke der Kontaktgabe relativ zueinander bewegbar sind.The invention relates to a contact spring set for high electrical currents with two elongated contact members arranged approximately parallel with their respective main parts, each of which is fastened at one end and can be moved relative to one another with its opposite free ends for the purpose of making contact.

Ein derartiger Kontaktfedersatz herkömmlicher Art ist mit seinem grundsätzlichen Aufbau in Figur 3 gezeigt. Eine feststehende Kontaktfeder 21 und eine bewegliche Kontaktfeder 22 sind jeweils einseitig in einem Träger 23 eingespannt. In der Nähe ihrer freien Enden tragen sie Kontaktstücke 24 und 25, welche in einer Schaltstellung einander berühren und damit Kontakt geben. Die bewegliche Kontaktfeder 22 wird dabei von einem Betätigungsorgan 26 gegen die feststehende Kontaktfeder 21 gedrückt (in Richtung des Pfeiles 27), wodurch die Kontaktkraft erzeugt wird. Die Kontaktkraft könnte auch durch entsprechende Vorspannung der beweglichen Kontaktfeder 22 erzeugt werden, was dann einen Ruhekontakt ergäbe. Zum Öffnen des Kontaktes müßte dann ein Betätigungsorgan entgegen dem Pfeil 27 wirken.Such a contact spring set of conventional type is shown with its basic structure in FIG. 3. A fixed contact spring 21 and a movable contact spring 22 are each clamped on one side in a carrier 23. In the vicinity of their free ends, they carry contact pieces 24 and 25 which touch one another in a switching position and thus make contact. The movable contact spring 22 is pressed by an actuator 26 against the fixed contact spring 21 (in the direction of arrow 27), whereby the contact force is generated. The contact force could also be generated by appropriate pretensioning of the movable contact spring 22, which would then result in a break contact. To open the contact, an actuator would then have to act against arrow 27.

Fließt bei geschlossenem Kontakt gemäß Darstellung in Figur 3 ein hoher Strom i über die beiden Kontaktfedern 21 und 22, so ergibt sich durch die beiden entgegengesetzten Stromflüsse in den Kontaktfedern eine elektrodynamische Kraft, welche durch die Pfeile 28 angedeutet ist. Diese elektrodynamische Kraft versucht die beiden Kontaktfedern auseinanderzudrücken. Reicht die über das Betätigungsorgan 26 oder durch eine Vorspannung aufgebrachte Kontaktkraft nicht aus, so können die elektrodynamischen Kräfte zu einer Kontaktöffnung führen. Solange die Magnetsysteme für Hochstromrelais entsprechend groß ausgelegt waren, wurden auf jeden Fall immer genügend hohe Kontaktkräfte erzeugt, so daß die erwähnten elektrodynamischen Öffnungskräfte nicht zur Wirkung kamen. Durch die allgemeine Miniaturisierung auch der Relais für hohe Schaltleistung bei gleichzeitiger Verringerung der Steuerleistung können unter Umständen mit dem volumenmäßig verringerten Magnetsystem die notwendigen Kontaktkräfte zum Führen hoher Impulsströme nicht mehr erzeugt werden. Wie erwähnt, werden durch die elektrodynamischen Kräfte die parallelen Kontaktfedern auseinandergedrückt, so daß während des Stromimpulses ein Kontaktöffnen auftritt. Dieses hat einen leistungsstarken Lichtbogen zur Folge, der zum Verschweißen der Kontakte führen kann. Solche Impulsströme können z. B. Kurzschlußströme von 1000 A sein, während das Relais selbst nur für einen Dauerstrom von beispielsweise 6 A ausgelegt ist.If a high current i flows through the two contact springs 21 and 22 when the contact is closed, as shown in FIG. 3, the two opposite current flows in the contact springs result in an electrodynamic force, which is indicated by the arrows 28. This electrodynamic force tries to push the two contact springs apart. If the contact force applied via the actuating member 26 or through a pretension is insufficient, the electrodynamic forces can lead to a contact opening. As long as the magnet systems for high-current relays were designed to be large enough, contact forces were always high enough generated so that the electrodynamic opening forces mentioned did not come into effect. Due to the general miniaturization of the relays for high switching power with a simultaneous reduction in the control power, the contact forces required to carry high impulse currents can no longer be generated with the volume-reduced magnet system. As mentioned, the parallel contact springs are pushed apart by the electrodynamic forces, so that a contact opening occurs during the current pulse. This results in a powerful arc that can lead to welding of the contacts. Such pulse currents can e.g. B. short-circuit currents of 1000 A, while the relay itself is only designed for a continuous current of 6 A, for example.

Um dieses Problem zu beherrschen, mußten also bisher erheblich größere Relais eingesetzt werden, als für den zu führenden Dauerstrom notwendig gewesen wäre. Eine andere Möglichkeit bestand nur darin, ein Verschweißen der Kontakte bei Kurzschluß in Kauf zu nehmen.In order to master this problem, it was previously necessary to use considerably larger relays than would have been necessary for the continuous current to be conducted. Another possibility was to accept welding of the contacts in the event of a short circuit.

Aufgabe der Erfindung ist es, einen Kontaktfedersatz der eingangs genannten Art zu schaffen, der das oben genannte Problem löst, bei dem also auch beim Auftreten sehr hoher Ströme kein Kontaktöffnen aufgrund der elektrodynamischen Kräfte möglich ist.The object of the invention is to provide a contact spring set of the type mentioned at the outset, which solves the above-mentioned problem, in which no contact opening is possible due to the electrodynamic forces even when very high currents occur.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß der kontaktgebende Abschnitt des ersten Kontaktgliedes an einem bügelförmig vom Hauptteil abgebogenen, das zweite Kontaktglied umgreifenden Abschnitt vorgesehen ist, derart, daß der kontaktgebende Abschnitt des zweiten Kontaktgliedes zwischen dem Hauptteil und dem kontaktgebenden Abschnitt des ersten Kontaktgliedes liegt.According to the invention, this object is achieved in that the contacting section of the first contact member is provided on a section bent in a bow shape from the main part and encompassing the second contact member, such that the contacting section of the second contact member lies between the main part and the contacting section of the first contact member.

Bei der Erfindung wird also von den parallelen Kontaktgliedern durch eine entsprechende bügelförmige Gestaltung eines kontaktgebenden Abschnittes die Kontaktstelle zwischen beiden Kontaktgliedern sozusagen nach außen gedreht, so daß sie nicht mehr zwischen den Hauptteilen der beiden Kontaktglieder oder Kontaktfedern liegt, sondern an der Außenseite des einen Kontaktgliedes. Die Schaltbewegung und die Richtung der Kontaktkraft werden damit umgedreht, so daß die elektrodynamischen Kräfte zwischen den Hauptteilen der beiden Kontaktglieder der Kontaktkraft nicht mehr entgegenwirken, sondern diese sogar noch verstärken.In the case of the invention, the contact point between the two contact members is therefore of the parallel contact members by a corresponding bow-shaped design of a contact-making section so to speak turned outwards so that it no longer lies between the main parts of the two contact members or contact springs, but on the outside of the one contact member. The switching movement and the direction of the contact force are thus reversed, so that the electrodynamic forces between the main parts of the two contact members no longer counteract the contact force, but even amplify it.

Die Erfindung wird nachfolgend an Ausführungsbeispielen anhand der Zeichnung näher erläutert. Es zeigen

  • Figur 1 einen erfindungsgemäß gestalteten Kontaktfedersatz schematisch in Seitenansicht,
  • Figur 2 einen etwas abgewandelten Kontaktfedersatz in perspektivischer Darstellung und
  • Figur 3 einen Kontaktfedersatz in Seitenansicht nach dem Stand der Technik, wie bereits oben beschrieben.
The invention is explained in more detail below using exemplary embodiments with reference to the drawing. Show it
  • FIG. 1 shows schematically a side view of a contact spring set designed according to the invention,
  • Figure 2 shows a slightly modified contact spring set in perspective and
  • Figure 3 is a side view of a contact spring set according to the prior art, as already described above.

Der in Figur 1 beschriebene Kontaktfedersatz besitzt eine feststehende Kontaktfeder 1 und eine bewegliche Kontaktfeder 2, welche beide mit ihrem einen Ende in einem Träger 3 verankert sind. Das freie Ende 2a der beweglichen Kontaktfeder ist U-förmig um das freie Ende 1a der feststehenden Kontaktfeder herumgebogen, so daß der kontaktgebende Abschnitt 2b mit seinem Kontaktstück 5 der Außenseite der feststehenden Kontaktfeder mit ihrem Kontaktstück 4 gegenübersteht.The contact spring set described in FIG. 1 has a fixed contact spring 1 and a movable contact spring 2, both of which are anchored at one end in a carrier 3. The free end 2a of the movable contact spring is bent in a U-shape around the free end 1a of the fixed contact spring, so that the contacting section 2b with its contact piece 5 faces the outside of the fixed contact spring with its contact piece 4.

Der in Figur 1 gezeigte geschlossene Zustand des Kontaktes wird durch ein Betätigungsorgan 6 erzeugt, welches in Richtung des Pfeiles 7 bewegt wird und damit die Kontaktkraft erzeugt. Wird nun ein sehr hoher Impulsstrom i durch den geschlossenen Kontakt geschickt, werden elektrodynamische Kräfte 8 wirksam, welche die Hauptteile der Kontaktfedern 1 und 2 auseinanderzudrükken versuchen. Da die Kontaktgabe jedoch zwischen der Außenseite der feststehenden Kontaktfeder 1 und dem abgebogenen Abschnitt 2b erfolgt, so wirken die elektrodynamischen Kräfte in Richtung der Kontaktkraft und verstärken diese.The closed state of the contact shown in Figure 1 is generated by an actuator 6 which is moved in the direction of arrow 7 and thus generates the contact force. If a very high pulse current i is now sent through the closed contact, electrodynamic forces 8 act which try to push the main parts of the contact springs 1 and 2 apart. However, since the contact between the outside of the fixed contact spring 1 and the bent section 2b, the electrodynamic forces act in the direction of the contact force and amplify it.

Das in Figur 1 gezeigte Prinzip der Umkehrung der Kontaktkraftrichtung läßt sich auch für abgewandelte Kontaktfedersätze, auch für Öffnerkontakte, sinngemäß anwenden.The principle of reversing the direction of contact force shown in FIG. 1 can also be used analogously for modified contact spring sets, also for break contacts.

So könnte der Kontaktfedersatz nach Fig. 1 als Öffner betrieben werden, wenn die Kontaktfeder 2 in Richtung des Pfeiles 7 vorgespannt wäre. Durch ein Betätigungsorgan 6' könnte der Kontakt dann in Richtung des Pfeiles 7' geöffnet werden.1 could be operated as an opener if the contact spring 2 were biased in the direction of the arrow 7. The contact could then be opened in the direction of arrow 7 'by an actuator 6'.

In Figur 2 ist ein weiteres Beispiel für einen Öffnerkontakt gezeigt. Hier ist eine feststehende Kontaktfeder 11 mit einer beweglichen Kontaktfeder 12 so angeordnet, daß ein bügelförmig abgebogener Abschnitt 11a einen kontaktgebenden Abschnitt 11b an der Außenseite der beweglichen Kontaktfeder 12 trägt. Die Kontaktstücke 14 und 15 sind bei dem gezeigten Beispiel miteinander in Kontaktberührung, da es sich um einen Öffnerkontakt handelt, also eine Vorspannung in Richtung des Pfeiles 17 den Kontakt im Ruhezustand geschlossen hält. Mit einem Betätigungsorgan 16 kann dieser Kontakt bei Betätigung geöffnet werden. Auch in diesem Fall wirkt ein Stromimpuls mit den daraus resultierenden elektrodynamischen Kräften im Sinne eines Schließens des Kontaktes, so daß auch hierbei ein Prellen bzw. ein Lichtbogen vermieden wird.A further example of an NC contact is shown in FIG. Here, a fixed contact spring 11 with a movable contact spring 12 is arranged in such a way that a bow-shaped section 11a carries a contact-making section 11b on the outside of the movable contact spring 12. The contact pieces 14 and 15 are in contact with each other in the example shown, since it is an NC contact, that is, a bias in the direction of arrow 17 keeps the contact closed in the idle state. With an actuator 16, this contact can be opened when actuated. In this case too, a current pulse acts with the resulting electrodynamic forces in the sense of closing the contact, so that a bouncing or an arc is also avoided in this case.

Claims (3)

Kontaktfedersatz für hohe elektrische Ströme mit zwei langgestreckten, mit ihrem jeweiligen Hauptteil annähernd parallel angeordneten Kontaktgliedern (1, 2; 11, 12), welche jeweils mit einem Ende befestigt und mit ihren entgegengesetzten freien Enden zum Zwecke der Kontaktgabe relativ zueinander bewegbar sind, dadurch gekennzeichnet, daß der kontaktgebende Abschnitt (2b; 11b) des ersten Kontaktgliedes an einem bügelförmig vom Hauptteil abgebogenen, das zweite Kontaktglied (1; 12) umgreifenden Abschnitt (2a; 11a) vorgesehen ist, derart, daß der kontaktgebende Abschnitt (1a; 12a) des zweiten Kontaktgliedes zwischen dem Hauptteil (2; 11) und dem kontaktgebenden Abschnitt (2b; 11b) des ersten Kontaktgliedes liegt.Contact spring set for high electrical currents with two elongated contact members (1, 2; 11, 12) arranged approximately parallel with their respective main parts, each fastened with one end and movable with their opposite free ends for the purpose of making contact, characterized in that in that the contact-making portion (2b; 11b) of the first contact member is bent in a bow-shaped from the main part, the second contact member (1; 12) enclosing section (2a; 11a) is provided such that the contact-making portion (1a; 12a) of the second contact member between the main part (2; 11) and the contacting portion (2b; 11b) of the first contact member. Kontaktfedersatz nach Anspruch 1, dadurch gekennzeichnet, daß der bügelförmig abgebogene Abschnitt (2a) des ersten Kontaktgliedes (2) das freie Ende (1a) des zweiten Kontaktgliedes (1) umgreift.Contact spring set according to claim 1, characterized in that the bow-shaped bent section (2a) of the first contact member (2) engages around the free end (1a) of the second contact member (1). Kontaktfedersatz nach Anspruch 1, dadurch gekennzeichnet, daß der bügelförmig abgebogene Abschnitt (11a) des ersten Kontaktgliedes (11) den kontaktgebenden Abschnitt (12a) des zweiten Kontaktgliedes (12) seitlich umgreift.Contact spring set according to claim 1, characterized in that the bow-shaped bent section (11a) of the first contact member (11) laterally engages around the contacting section (12a) of the second contact member (12).
EP19900124632 1990-08-21 1990-12-18 Contact spring set for high electrical currents Withdrawn EP0471893A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19904026425 DE4026425C1 (en) 1990-08-21 1990-08-21
DE4026425 1990-08-21

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EP0471893A2 true EP0471893A2 (en) 1992-02-26
EP0471893A3 EP0471893A3 (en) 1992-08-05

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EP19900124632 Withdrawn EP0471893A3 (en) 1990-08-21 1990-12-18 Contact spring set for high electrical currents

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EP (1) EP0471893A3 (en)
JP (1) JPH04233112A (en)
CA (1) CA2049462A1 (en)
DE (1) DE4026425C1 (en)
PT (1) PT98728A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993023863A1 (en) * 1992-05-15 1993-11-25 Siemens Aktiengesellschaft Contact spring arrangement for a relay for conducting and switching high currents
WO1995005671A1 (en) * 1993-08-19 1995-02-23 Blp Components Limited Switching devices
EP1858038A2 (en) * 2006-05-15 2007-11-21 Gruner AG Relay with contact force intensification
CN102903576A (en) * 2012-10-27 2013-01-30 东莞市三友联众电器有限公司 Reed switch assembly of magnetic latching relay
CN105097307A (en) * 2014-05-15 2015-11-25 沈阳工业大学 Novel control and protection switch contact system
US20160071677A1 (en) * 2013-05-24 2016-03-10 Tyco Electronics Austria Gmbh Electric Switching Device with Enhanced Lorentz Force Bias
DE102019101074A1 (en) * 2019-01-16 2020-07-16 Phoenix Contact Gmbh & Co. Kg Relay and arrangement for determining an armature position of a relay

Families Citing this family (4)

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Publication number Priority date Publication date Assignee Title
DE4409108C2 (en) * 1994-03-17 1996-03-28 Kostal Leopold Gmbh & Co Kg Electric four-way switch
DE19532762A1 (en) * 1995-09-05 1997-03-06 Siemens Ag Electromagnetic load current relay with PCB mounting
JP5838920B2 (en) * 2011-07-18 2016-01-06 アンデン株式会社 relay
JP7066996B2 (en) 2017-08-10 2022-05-16 オムロン株式会社 Electromagnetic relay

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GB575823A (en) * 1943-04-16 1946-03-06 British Thomson Houston Co Ltd Improvements in and relating to electric switches with electrodynamically-reinforcedcontact
FR1097288A (en) * 1954-02-04 1955-07-04 Merlin Gerin Electro-dynamic compensation device for pressure contacts
DE2024589A1 (en) * 1969-05-23 1970-11-26 Sealectro Ltd., Portsmouth, Hampshire (Großbritannien) Program switching device with rotating drum
FR2275866A1 (en) * 1974-06-21 1976-01-16 Siemens Ag Switch or contactor contact system - has two contacts forming tong configuration with insulation at tong joint and contact beads at heads

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GB575823A (en) * 1943-04-16 1946-03-06 British Thomson Houston Co Ltd Improvements in and relating to electric switches with electrodynamically-reinforcedcontact
FR1097288A (en) * 1954-02-04 1955-07-04 Merlin Gerin Electro-dynamic compensation device for pressure contacts
DE2024589A1 (en) * 1969-05-23 1970-11-26 Sealectro Ltd., Portsmouth, Hampshire (Großbritannien) Program switching device with rotating drum
FR2275866A1 (en) * 1974-06-21 1976-01-16 Siemens Ag Switch or contactor contact system - has two contacts forming tong configuration with insulation at tong joint and contact beads at heads

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INSTRUMENTS AND CONTROL SYSTEMS. Bd. 36, Nr. 3, M{rz 1963, RADNOR US Seiten 125 - 127; EDMUND A. BOLTON: 'No-Noise/No-Bounce Switch' *

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993023863A1 (en) * 1992-05-15 1993-11-25 Siemens Aktiengesellschaft Contact spring arrangement for a relay for conducting and switching high currents
US5583471A (en) * 1992-05-15 1996-12-10 Siemens Aktiengesellschaft Contact spring arrangement for a relay for conducting and switching high currents
WO1995005671A1 (en) * 1993-08-19 1995-02-23 Blp Components Limited Switching devices
GB2295726A (en) * 1993-08-19 1996-06-05 Blp Components Ltd Switching devices
GB2295726B (en) * 1993-08-19 1997-08-06 Blp Components Ltd Switching devices
AU681175B2 (en) * 1993-08-19 1997-08-21 Blp Components Limited Switching devices
EP1858038A2 (en) * 2006-05-15 2007-11-21 Gruner AG Relay with contact force intensification
EP1858038A3 (en) * 2006-05-15 2009-06-10 Gruner AG Relay with contact force intensification
CN102903576A (en) * 2012-10-27 2013-01-30 东莞市三友联众电器有限公司 Reed switch assembly of magnetic latching relay
CN102903576B (en) * 2012-10-27 2015-06-03 东莞市三友联众电器有限公司 Reed switch assembly of magnetic latching relay
US20160071677A1 (en) * 2013-05-24 2016-03-10 Tyco Electronics Austria Gmbh Electric Switching Device with Enhanced Lorentz Force Bias
US9691562B2 (en) * 2013-05-24 2017-06-27 Tyco Electronics Austria Gmbh Electric switching device with enhanced Lorentz force bias
CN105097307A (en) * 2014-05-15 2015-11-25 沈阳工业大学 Novel control and protection switch contact system
DE102019101074A1 (en) * 2019-01-16 2020-07-16 Phoenix Contact Gmbh & Co. Kg Relay and arrangement for determining an armature position of a relay
DE102019101074B4 (en) 2019-01-16 2021-08-12 Phoenix Contact Gmbh & Co. Kg Relay, arrangement and method for determining an armature position of a relay

Also Published As

Publication number Publication date
DE4026425C1 (en) 1992-02-27
EP0471893A3 (en) 1992-08-05
JPH04233112A (en) 1992-08-21
PT98728A (en) 1993-09-30
CA2049462A1 (en) 1992-02-22

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