EP0329078A2 - Coil for an electromagnetic relay with time lag - Google Patents

Coil for an electromagnetic relay with time lag Download PDF

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Publication number
EP0329078A2
EP0329078A2 EP89102514A EP89102514A EP0329078A2 EP 0329078 A2 EP0329078 A2 EP 0329078A2 EP 89102514 A EP89102514 A EP 89102514A EP 89102514 A EP89102514 A EP 89102514A EP 0329078 A2 EP0329078 A2 EP 0329078A2
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EP
European Patent Office
Prior art keywords
coil
flanges
short
tube
circuit tube
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Withdrawn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
EP89102514A
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German (de)
French (fr)
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EP0329078A3 (en
Inventor
Richard Siepmann
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Siemens AG
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Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0329078A2 publication Critical patent/EP0329078A2/en
Publication of EP0329078A3 publication Critical patent/EP0329078A3/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/44—Magnetic coils or windings
    • H01H50/46—Short-circuited conducting sleeves, bands, or discs

Definitions

  • the invention relates to a coil for an electromagnetic relay with response delay with a coil tube for receiving a core and two flanges having flanges connected to the ends of the coil tube and with a coil applied between the flanges on the coil tube, the core and the Winding a short-circuit tube made of copper or another material with good electrical conductivity is arranged.
  • a coil of the type mentioned with a short circuit Pipe made of copper is described for example in DE-OS 1 514 717.
  • the coil body in several parts and to assemble it, in order first to be able to slide a copper tube onto the core tube of the coil body and then to be able to connect the flange to the core tube.
  • this not only means an increased outlay on parts and manufacturing steps, but also the winding space is reduced by the additionally pushed-on copper tube.
  • the object of the invention is to provide a coil for a relay and a relay itself, in which a response delay is achieved with a short-circuit tube without the winding space or the other dimensions of the coil and the relay having to be changed thereby.
  • this object is achieved in that the short-circuit tube forms the load-bearing part of the coil tube and is connected at the ends to the insulating material of the flanges and that only a thin insulating layer is provided between the short-circuit tube and the winding in the area between the flanges.
  • a solid short-circuit tube made of copper or a comparable material thus represents the supporting element of the coil former.
  • This tube replaces the electrically and magnetically inactive plastic coil tube, as is normally present in coil formers.
  • the winding area or the core cross-section are not changed by this. Due to the small diameter that can be achieved in this way and the length over the entire area between the two coil flanges, an AR value (resistance value of the short-circuit winding) in the order of magnitude of the excitation winding can be achieved for the short-circuit tube. With this, response delays of up to two times compared to the coil can be achieved without a short circuit.
  • the short-circuit tube is encased at the ends by embedding, in particular by injection, with the material of the coil flanges.
  • the tight fit between the short-circuit tube and flanges can also be improved by appropriate surface design in this area, for example by knurling the short-circuit tube.
  • a thin spray skin made of the same plastic as the flanges can serve as the insulation layer between the short-circuit tube and the winding wire, for example.
  • Other options are wrapping with a plastic film or subsequent painting of the short-circuit tube.
  • the drawing shows a partly schematic, partly also a sectional illustration of a relay for switching high currents, as is used, for example, in motor vehicles.
  • a relay for switching high currents, as is used, for example, in motor vehicles.
  • it has a base 1 with tabs 2 and a coil 3, which is fastened on the base and serves as a base body for the entire relay system.
  • a yoke 4 with an armature 5 and a contact spring 6 is arranged on the coil, the latter also serving as an armature return spring.
  • the contact piece 7 at the free end of the spring 6 interacts with a mating contact element 8 anchored in the base.
  • a cap 9 forms together with the base 1 a closed and sealable housing.
  • the relay is constructed in a known form.
  • the coil 3 has a coil tube in the form of a short-circuit tube 10 made of copper, which is encapsulated at the ends with a flange 11 and 12, respectively.
  • a short-circuit tube 10 made of copper, which is encapsulated at the ends with a flange 11 and 12, respectively.
  • other materials with good electrical conductivity can also be considered, such as copper alloys or aluminum.
  • a thin insulation layer 13 is provided as a spray skin or as a subsequently applied film.
  • a winding 14 is applied in the usual way.
  • a core 15 is also inserted into the coil tube in a known manner, which is connected to the yoke 4 at one end and forms a pole plate 16 for the armature 5 at the other end.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Electromagnets (AREA)
  • Windings For Motors And Generators (AREA)

Abstract

In the coil for an electromagnetic relay, a response delay is achieved using a short-circuit tube (10) which forms the supporting part of the coil former and takes the place of a plastic tube which would otherwise be used. The short-circuit tube has flanges (11, 12) extruded on the ends, while only a thin insulating layer (13) is provided with respect to the winding (14) in the region between the flanges. …<??>The invention permits a considerable response delay of the relay without modifying the dimensions of the winding and core. …<IMAGE>…

Description

Die Erfindung betrifft eine Spule für ein elektromagneti­sches Relais mit Ansprechverzögerung mit einem ein Spulen­rohr zur Aufnahme eines Kerns sowie zwei an den Enden des Spulenrohres mit diesem verbundene Flansche aufweisenden Spulenkörper und mit einer zwischen den Flanschen auf das Spulenrohr aufgebrachten Wicklung, wobei zwischen dem Kern und der Wicklung ein Kurzschlußrohr aus Kupfer oder einem anderen Material mit guter elektrischer Leitfähigkeit ange­ordnet ist.The invention relates to a coil for an electromagnetic relay with response delay with a coil tube for receiving a core and two flanges having flanges connected to the ends of the coil tube and with a coil applied between the flanges on the coil tube, the core and the Winding a short-circuit tube made of copper or another material with good electrical conductivity is arranged.

Bei einer prellenden Ansteuerung von Relais, beispielsweise durch schlechte Schalter in Kraftfahrzeugen, besteht die Gefahr, daß schnell ansprechende Relais die Prellungen die­ser Ansteuerschalter mitmachen, daß also ihre Kontakte mehrmals ein- und ausgeschaltet werden, bis sie geschlossen bleiben. Beim Einschalten von Lasten mit hohen Einschalt­strömen kann dies zu starkem Kontaktverschleiß oder zum Verschweißen führen. Zur Lösung dieses Problems könnte eine Ansprechverzögerung beitragen, wobei ein Schließen der Kon­takte über die Zeit der Ansteuerprellungen hinweg verzögert wird.With a bouncing control of relays, for example due to poor switches in motor vehicles, there is a risk that quickly responding relays will take part in the bruises of these control switches, so that their contacts will be switched on and off several times until they remain closed. When switching on loads with high inrush currents, this can lead to severe contact wear or welding. A response delay could help to solve this problem, whereby the closing of the contacts is delayed over the time of the control bruises.

Es ist bereits bekannt, eine Ansprechverzögerung durch ei­nen Kurzschlußring oder durch ein massives Kurzschlußrohr aus Kupfer zu erzielen. Bei bekannten Anordnungen dieser Art wird jedoch der nutzbare Wickelraum um das Volumen des Kurzschlußrohres reduziert; bei festgelegter Größe des Wik­kelraums wird auf diese Weise die notwendige Erregerlei­stung erhöht.It is already known to achieve a response delay using a short-circuit ring or a solid short-circuit tube made of copper. In known arrangements of this type, however, the usable winding space is reduced by the volume of the short-circuit tube; If the size of the winding space is defined, the necessary excitation power is increased in this way.

Eine Spule der eingangs genannten Art mit einem Kurzschluß­ rohr aus Kupfer wird beispielsweise in der DE-OS 1 514 717 beschrieben. Dort wird vorgeschlagen, den Spulenkörper mehrteilig und zusammensetzbar auszubilden, um zunächst ein Kupferrohr auf das Kernrohr des Spulenkörpers aufschieben und dann den Flansch mit dem Kernrohr verbinden zu können. Dies bedeutet jedoch nicht nur einen erhöhten Aufwand an Teilen und Fertigungsschritten, sondern es wird auch der Wickelraum durch das zusätzlich aufgeschobene Kupferrohr verkleinert.A coil of the type mentioned with a short circuit Pipe made of copper is described for example in DE-OS 1 514 717. There it is proposed to design the coil body in several parts and to assemble it, in order first to be able to slide a copper tube onto the core tube of the coil body and then to be able to connect the flange to the core tube. However, this not only means an increased outlay on parts and manufacturing steps, but also the winding space is reduced by the additionally pushed-on copper tube.

Aufgabe der Erfindung ist es, eine Spule für ein Relais so­wie ein Relais selbst zu schaffen, bei dem eine Ansprech­verzögerung mit einem Kurzschlußrohr erreicht wird, ohne daß der Wickelraum oder die sonstigen Abmessungen der Spule und des Relais dadurch verändert werden müssen.The object of the invention is to provide a coil for a relay and a relay itself, in which a response delay is achieved with a short-circuit tube without the winding space or the other dimensions of the coil and the relay having to be changed thereby.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß das Kurzschlußrohr den tragenden Teil des Spulenrohres bildet und an den Enden mit dem isolierenden Material der Flansche verbunden ist und daß im Bereich zwischen den Flanschen le­diglich eine dünne Isolierschicht zwischen dem Kurzschluß­rohr und der Wicklung vorgesehen ist.According to the invention, this object is achieved in that the short-circuit tube forms the load-bearing part of the coil tube and is connected at the ends to the insulating material of the flanges and that only a thin insulating layer is provided between the short-circuit tube and the winding in the area between the flanges.

Bei der erfindungsgemäßen Spule stellt also ein massives Kurzschlußrohr aus Kupfer oder einem vergleichbaren Mate­rial das tragende Element des Spulenkörpers dar. Dieses Rohr ersetzt das elektrisch und magnetisch ohnehin inaktive Spulenrohr aus Kunststoff, wie es normalerweise in Spulen­körpern vorhanden ist. Der Wickelraum oder der Kernquer­schnitt werden dadurch nicht verändert. Durch den auf diese Weise erreichbaren kleinen Durchmesser und durch die Länge über den ganzen Bereich zwischen beiden Spulenflanschen läßt sich für das Kurzschlußrohr ein AR-Wert (Widerstands­wert der Kurzschlußwindung) in der Größenordnung der Erre­gerwicklung erzielen. Hiermit sind Ansprechverzögerungen bis zum zweifachen gegenüber der Spule ohne Kurzschluß zu erreichen.In the coil according to the invention, a solid short-circuit tube made of copper or a comparable material thus represents the supporting element of the coil former. This tube replaces the electrically and magnetically inactive plastic coil tube, as is normally present in coil formers. The winding area or the core cross-section are not changed by this. Due to the small diameter that can be achieved in this way and the length over the entire area between the two coil flanges, an AR value (resistance value of the short-circuit winding) in the order of magnitude of the excitation winding can be achieved for the short-circuit tube. With this, response delays of up to two times compared to the coil can be achieved without a short circuit.

In vorteilhafter Ausgestaltung ist das Kurzschlußrohr an den Enden durch Einbettung, insbesondere durch Einspritzen, mit dem Material der Spulenflansche ummantelt. Dabei kann der Festsitz zwischen Kurzschlußrohr und Flanschen auch durch eine entsprechende Oberflächengestaltung in diesem Bereich, etwa durch eine Rändelung des Kurzschlußrohres, verbessert werden. Als Isolationsschicht zwischen dem Kurz­schlußrohr und dem Wickeldraht kann beispielsweise eine dünne Spritzhaut aus dem gleichen Kunststoff wie die Flan­sche dienen. Weitere Möglichkeiten sind das Umwickeln mit einer Kunststoffolie oder ein nachträgliches Lackieren des Kurzschlußrohres.In an advantageous embodiment, the short-circuit tube is encased at the ends by embedding, in particular by injection, with the material of the coil flanges. The tight fit between the short-circuit tube and flanges can also be improved by appropriate surface design in this area, for example by knurling the short-circuit tube. A thin spray skin made of the same plastic as the flanges can serve as the insulation layer between the short-circuit tube and the winding wire, for example. Other options are wrapping with a plastic film or subsequent painting of the short-circuit tube.

Nachfolgend wird die Erfindung anhand eines Ausführungsbei­spiels in einem Relais anhand der einzigen FIG gezeigt.The invention is shown below using an exemplary embodiment in a relay using the single FIG.

Die Zeichnung zeigt in teilweise schematischer, teilweise auch geschnittener Darstellung ein Relais zum Schalten von hohen Strömen, wie es beispielsweise in Kraftfahrzeugen zum Einsatz kommt. Es besitzt als wesentliche Bauteile einen Sockel 1 mit Flachsteckern 2 und eine Spule 3, die auf dem Sockel befestigt ist und als Grundkörper für das gesamte Relaissystem dient. Auf der Spule ist ein Joch 4 mit einem Anker 5 sowie einer Kontaktfeder 6 angeordnet, wobei letz­tere auch als Ankerrückstellfeder dient. Das Kontaktstück 7 am freien Ende der Feder 6 wirkt mit einem im Sockel veran­kerten Gegenkontaktelement 8 zusammen. Eine Kappe 9 bildet zusammen mit dem Sockel 1 ein geschlossenes und abdichtba­res Gehäuse. Insoweit ist das Relais in bekannter Form auf­gebaut.The drawing shows a partly schematic, partly also a sectional illustration of a relay for switching high currents, as is used, for example, in motor vehicles. As essential components, it has a base 1 with tabs 2 and a coil 3, which is fastened on the base and serves as a base body for the entire relay system. A yoke 4 with an armature 5 and a contact spring 6 is arranged on the coil, the latter also serving as an armature return spring. The contact piece 7 at the free end of the spring 6 interacts with a mating contact element 8 anchored in the base. A cap 9 forms together with the base 1 a closed and sealable housing. To this extent, the relay is constructed in a known form.

Die Spule 3 besitzt ein Spulenrohr in Form eines Kurz­schlußrohres 10 aus Kupfer, welches an den Enden jeweils mit einem Flansch 11 bzw. 12 umspritzt ist. Neben Kupfer kommen auch andere Materialien mit guter elektrischer Leit­fähigkeit in Betracht, wie Kupferlegierungen oder Alumi­nium. Im Bereich zwischen den beiden Flanschen ist ledig­ lich eine dünne Isolationsschicht 13 als Spritzhaut oder als nachträglich aufgebrachte Folie vorgesehen. Darüber ist eine Wicklung 14 in üblicher Weise aufgebracht.The coil 3 has a coil tube in the form of a short-circuit tube 10 made of copper, which is encapsulated at the ends with a flange 11 and 12, respectively. In addition to copper, other materials with good electrical conductivity can also be considered, such as copper alloys or aluminum. In the area between the two flanges is single Lich a thin insulation layer 13 is provided as a spray skin or as a subsequently applied film. In addition, a winding 14 is applied in the usual way.

In das Spulenrohr ist ebenfalls in bekannter Weise ein Kern 15 eingeschoben, der an einem Ende mit dem Joch 4 verbunden ist und am anderen Ende eine Polplatte 16 für den Anker 5 bildet.A core 15 is also inserted into the coil tube in a known manner, which is connected to the yoke 4 at one end and forms a pole plate 16 for the armature 5 at the other end.

Claims (7)

1. Spule für ein elektromagnetisches Relais mit Ansprech­verzögerung, mit einem ein Spulenrohr (10) zur Aufnahme ei­nes Kerns (15) und zwei an den Enden des Spulenrohres mit diesem verbundene Flansche (11, 12) aufweisenden Spulenkör­per und mit einer zwischen den Flanschen (11, 12) auf das Spulenrohr aufgebrachten Wicklung (14), wobei zwischen dem Kern und der Wicklung ein Kurzschlußrohr aus einem Material guter elektrischer Leitfähigkeit angeordnet ist, da­durch gekennzeichnet, daß das Kurz­schlußrohr (10) den tragenden Teil des Spulenrohres bildet und an den Enden mit dem isolierenden Material der Flansche (11, 12) verbunden ist und daß im Bereich zwischen den Flanschen (11, 12) lediglich eine dünne Isolierschicht (13) zwischen dem Kurzschlußrohr (10) und der Wicklung (14) vor­gesehen ist.1. Coil for an electromagnetic relay with response delay, with a coil tube (10) for receiving a core (15) and two flanges (11, 12) having flanges (11, 12) connected to the ends of the coil tube and with one between the flanges (11 , 12) winding (14) applied to the coil tube, a short-circuit tube made of a material having good electrical conductivity being arranged between the core and the winding, characterized in that the short-circuit tube (10) forms the supporting part of the coil tube and at the ends with the insulating material of the flanges (11, 12) is connected and that in the area between the flanges (11, 12) only a thin insulating layer (13) is provided between the short-circuit tube (10) and the winding (14). 2. Spule nach Anspruch 1, dadurch gekenn­zeichnet, daß das Kurzschlußrohr (10) an den En­den durch Einbettung, wie Umspritzung, mit dem Material der Flansche (11, 12) ummantelt ist.2. Coil according to claim 1, characterized in that the short-circuit tube (10) is encased at the ends by embedding, such as extrusion coating, with the material of the flanges (11, 12). 3. Spule nach Anspruch 2, dadurch gekenn­zeichnet, daß das Kurzschlußrohr (10) im Bereich der Flansche eine rauhe Oberfläche, beispielsweise eine Rändelung, aufweist.3. Coil according to claim 2, characterized in that the short-circuit tube (10) in the region of the flanges has a rough surface, for example knurling. 4. Spule nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Kurzschlußrohr (10) im Bereich zwischen den Flanschen eine dünne Spritz­haut (13) trägt.4. Coil according to one of claims 1 to 3, characterized in that the short-circuit tube (10) carries a thin spray skin (13) in the region between the flanges. 5. Spule nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Kurzschlußrohr (10) im Bereich zwischen den Flanschen (11, 12) mit einer Isolierfolie umwickelt ist.5. Coil according to one of claims 1 to 3, characterized in that the short-circuit tube (10) in the area between the flanges (11, 12) is wrapped with an insulating film. 6. Spule nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Kurzschlußrohr (10) im Bereich zwischen den Flanschen (11, 12) mit einer isolierenden Lackschicht bedeckt ist.6. Coil according to one of claims 1 to 3, characterized in that the short-circuit tube (10) in the region between the flanges (11, 12) is covered with an insulating lacquer layer. 7. Elektromagnetisches Relais, dadurch ge­kennzeichnet, daß es eine Spule nach einem der Ansprüche 1 bis 6 aufweist.7. Electromagnetic relay, characterized in that it has a coil according to one of claims 1 to 6.
EP89102514A 1988-02-17 1989-02-14 Coil for an electromagnetic relay with time lag Withdrawn EP0329078A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8802045U DE8802045U1 (en) 1988-02-17 1988-02-17 Coil for an electromagnetic relay with switching delay
DE8802045U 1988-02-17

Publications (2)

Publication Number Publication Date
EP0329078A2 true EP0329078A2 (en) 1989-08-23
EP0329078A3 EP0329078A3 (en) 1990-07-18

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EP89102514A Withdrawn EP0329078A3 (en) 1988-02-17 1989-02-14 Coil for an electromagnetic relay with time lag

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US (1) US4896126A (en)
EP (1) EP0329078A3 (en)
JP (1) JPH01253138A (en)
DE (1) DE8802045U1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5173677A (en) * 1990-12-03 1992-12-22 Westinghouse Electric Corp. Superconducting magnetic energy storage system with low friction coil support
DE202007005132U1 (en) * 2007-04-04 2008-08-14 Eto Magnetic Gmbh Electromagnetic actuator
KR102410936B1 (en) * 2017-04-04 2022-06-20 현대자동차주식회사 Apparatus and mathod for controlling motor of a vehicle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2361542A (en) * 1941-05-07 1944-10-31 Bell Telephone Labor Inc Relay
US2366305A (en) * 1942-10-03 1945-01-02 Goodman Mfg Co Device for controlling electric circuits
FR2031068A5 (en) * 1969-07-04 1970-11-13 Sits Soc It Telecom Siemens
DE7737996U1 (en) * 1977-12-13 1979-03-08 Siemens Ag, 1000 Berlin Und 8000 Muenchen Bobbin for a relay
DE3321745A1 (en) * 1983-06-16 1984-12-20 Hohenloher Spulenkörperfabrik, 7110 Öhringen Injection moulded part made of thermoplastic and process for the production thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1789417A (en) * 1926-10-26 1931-01-20 Oscar F Shepard Polyphase magnet
US1809634A (en) * 1929-10-12 1931-06-09 Union Switch & Signal Co Electrical relay
CA349926A (en) * 1933-05-11 1935-04-30 Frisch Erling Time limit contactor
CH451323A (en) * 1966-03-31 1968-05-15 Siemens Ag Multi-part bobbin, especially for relays
JPS5915051Y2 (en) * 1978-10-26 1984-05-04 株式会社不二越 AC/DC solenoid

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2361542A (en) * 1941-05-07 1944-10-31 Bell Telephone Labor Inc Relay
US2366305A (en) * 1942-10-03 1945-01-02 Goodman Mfg Co Device for controlling electric circuits
FR2031068A5 (en) * 1969-07-04 1970-11-13 Sits Soc It Telecom Siemens
DE7737996U1 (en) * 1977-12-13 1979-03-08 Siemens Ag, 1000 Berlin Und 8000 Muenchen Bobbin for a relay
DE3321745A1 (en) * 1983-06-16 1984-12-20 Hohenloher Spulenkörperfabrik, 7110 Öhringen Injection moulded part made of thermoplastic and process for the production thereof

Also Published As

Publication number Publication date
EP0329078A3 (en) 1990-07-18
JPH01253138A (en) 1989-10-09
DE8802045U1 (en) 1989-06-15
US4896126A (en) 1990-01-23

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