EP0211446A1 - Relais électromagnétique à deux armatures - Google Patents

Relais électromagnétique à deux armatures Download PDF

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Publication number
EP0211446A1
EP0211446A1 EP86111088A EP86111088A EP0211446A1 EP 0211446 A1 EP0211446 A1 EP 0211446A1 EP 86111088 A EP86111088 A EP 86111088A EP 86111088 A EP86111088 A EP 86111088A EP 0211446 A1 EP0211446 A1 EP 0211446A1
Authority
EP
European Patent Office
Prior art keywords
contact
contacts
relay
coil
relay according
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
EP86111088A
Other languages
German (de)
English (en)
Other versions
EP0211446B1 (fr
Inventor
Josef Kern
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
Original Assignee
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
Priority to AT86111088T priority Critical patent/ATE48049T1/de
Publication of EP0211446A1 publication Critical patent/EP0211446A1/fr
Application granted granted Critical
Publication of EP0211446B1 publication Critical patent/EP0211446B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/20—Non-polarised relays with two or more independent armatures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5822—Flexible connections between movable contact and terminal

Definitions

  • the invention relates to an electromagnetic relay with a coil with a bobbin, winding and axially continuous core, the axis of which is parallel to the installation plane, further with a yoke arranged next to the coil and parallel to the axis thereof and with two flat armatures, each of which at one end of the coil runs approximately perpendicular to the coil axis, is mounted on a yoke end and forms a working air gap with one end of the core, each armature carrying a movable contact piece which interacts with at least one mating contact element.
  • Such a relay is known from FR-OS 2 204 870.
  • the advantage of the double working air gap is used to independently operate a separate changeover contact with each armature.
  • the center contact piece is attached directly to the rigid anchor, while the counter-contact elements are anchored in a socket.
  • the two armatures or their contact pieces are insulated from one another by an insulating intermediate layer, so that the two circuits of the changeover contacts are independent of one another.
  • the object of the invention is to develop a relay with two armatures of the type mentioned in such a way that it can be used in safety circuits, the tendency to weld being considerably reduced and, moreover, ensuring that the circuit is still reliably opened when a contact is welded.
  • this object is achieved in that the two movable contact pieces are each arranged on a contact spring attached to the armature and are connected to one another via an electrical conductor element, and in that the two anchors are each mounted on a bearing edge of the yoke and extended with an extension beyond the bearing edge , wherein the extensions of both anchors behind the bearing edge are connected to one another via a common return spring that is subjected to tension.
  • both armatures lie fully on the associated core pole face and in any case both contacts are closed with sufficient contact force.
  • An adjustable overstroke ensures that a sufficient contact force is achieved even after a certain contact erosion, so that the welding tendency of the contact pieces is reduced.
  • the common spring gives both anchors the same restoring force. Should one of the two anchors no longer fall off due to the welding of its contact, the other anchor receives a greater restoring force due to the tensioned return spring and therefore falls off all the more safely.
  • the use of two electrically connected contacts in a two-arm relay is also particularly advantageous because the magnetic properties of the two-arm relay are additionally exploited here. Since the two working air gaps are simultaneously reduced when the two anchors are pulled out of the idle state, the attraction increases disproportionately compared to the attraction of a single anchor, as a result of which the switching speed is particularly high at the moment the two contacts are closed, so that the tendency to weld is additionally reduced. Especially for applications in motor vehicles or similar battery-powered systems this is important to men. Because with the contacts connected in series, the load current only flows when both armatures are already close to the pole face, i.e. the two air gaps have already become very small and become almost zero.
  • the two anchors are fully tightened to the core pole surface even if the battery voltage should collapse due to the closing of the contacts and the flow of a large load current. This also helps to avoid a floating state when the contacts are closed, which in most cases would lead to the welding of a contact. Since the relay winding is designed so that the necessary attraction or the required flux are generated with two dropped armatures, the relay according to the invention results in a very favorable ratio of response voltage and pull-through voltage, so that in the last part of the tightening movement a very rapid tightening of Anchor with high contact forces is made possible.
  • the described advantages of the relay according to the invention are particularly effective when both contacts of the relay are designed as make contacts.
  • the closing of the contacts goes hand in hand with the tightening of the two anchors, whereby the largest magnetic forces are also converted into correspondingly large contact forces when the anchors are tightened.
  • the two contacts of the relay can also be designed as openers, which open independently of one another when welded.
  • the associated armature is also retained when a contact is welded, so that the magnetic circuit can no longer be closed completely. If the relay is designed accordingly, the second armature can still pull in and interrupt the series circuit via the second break contact.
  • a copper wire connecting the two normally open or normally closed contacts is provided with an additional connection element of its own.
  • the relay according to the invention cannot usefully be operated with changeover contacts, since when one contact is welded, a bridging between the two switched circuits would occur via the electrical connection of the two movable contact elements.
  • a mating contact element in the manner of changeover contacts to the respectively unused switching position of the armature or the movable contact piece.
  • These additional mating contact elements are then expediently not used for switching a second circuit, but only for monitoring.
  • a logical link could be used to determine, for example, if one of the contacts is welded.
  • the electrical conductor element is a strand of copper or a similarly highly conductive material which is welded directly onto the two contact pieces. This allows a high load current to be conducted between the two contacts without the risk of excessive heating.
  • the contact spring generating the contact pressure on the respective armature can then be made from an optimal spring material, for example spring steel, which does not have to have very good electrical conductivity.
  • the coil former expediently serves as a carrier for the functional elements of the relay.
  • the two coil former flanges can each have recesses for the plug-in fastening of the yoke, and further recesses for holding the copper strand.
  • the coil flanges expediently each have recesses for the plug-in fastening of the mating contact elements.
  • the relay shown in FIGS. 1 and 2 has a coil former 1 with a core 2 pressed into an axial through-bore and having two pole faces 3 and 4 at its ends.
  • the coil former has two flanges 5 and 6, between which a winding 7 is applied.
  • the coil formed by coil former 1, core 2 and winding 7 is arranged with its axis parallel to an installation plane on a flat base 8, which forms a housing with a cap 9.
  • the two housing parts can be welded, for example, with ultrasound.
  • the magnetic circuit of the relay has a flat flux plate or yoke 11, which is arranged essentially perpendicular to the installation plane next to the coil and is fixed in recesses 12 of the coil body flanges 5 and 6 by insertion. Extensions 13 of the yoke 11 are also anchored in the base 8. At both ends, the flux plate has bearing edges 14 and 15, on which an anchor 16 and 17 is mounted. In order to secure the anchor against transverse displacement on the bearing cutting edge, the yoke is provided with incisions 18 or projections 19 in the usual way.
  • Each anchor has an extension 16a or 17a in the area behind the bearing cutting edge, and on these two extensions a common return spring 20, which is under tension, engages and the two anchors with the same return force into their rest position, i.e. in the fallen position, pulls.
  • a contact spring 21 or 22 is attached to each of the two anchors, which carries a contact piece 23 or 24. Both contact pieces are via a copper strand 25 connected to one another, which is guided around the outside of the two armatures and is connected at its ends directly through a recess in the contact spring 21 or 22 to the relevant contact piece 23 or 24. As a result, a possibly high switching current is not conducted via the contact springs made of spring steel or via the armatures.
  • two fixed mating contact elements 26 and 27 are anchored in recesses 5a and 6a of the bobbin flanges 5 and 6, respectively, by insertion. They each have molded pins or plugs, e.g. B. 26a, which are guided by the base 8. Below the winding 7 there is still space for additional components 28, such as diodes or resistors, on the base.
  • FIGS. 3 and 4 show a slightly modified form of the relay.
  • the same parts as in FIGS. 1 and 2 are also provided with the same reference numerals.
  • the only difference from the first example is the design and arrangement of the contacts.
  • the two contact springs 21 and 22 now carry outwardly directed contact pieces 33 and 34, which have mating contact elements 36 and 37 work together.
  • the relay thus contains two break contacts, which form a series connection via the two armatures 16 and 17 in the idle state and which interrupt the circuit twice independently of one another when the relay is excited. Even when one NC contact is welded, the second armature can still pull in (although not with an optimally closed magnetic circuit) and interrupt the circuit.
  • FIGS. 5 and 6 A further modification is shown in FIGS. 5 and 6.
  • the two contact springs 21 and 22 are connected via a strand 35, which is also brought up to an additional plug connection 38.
  • the two break contact pieces 33 and 34 thus have an additional common connection and can therefore also be connected in parallel as a double break contact.
  • the operation of the relay is the same as in the previous examples.
  • the two contacts can be set with different contact spacing and equipped with different contact materials, so that one contact with weld-resistant material opens or closes last and thus draws the arc that may occur, while the other contact with a material with high conductivity carries most of the load current during operation, but is not exposed to an arc.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Relay Circuits (AREA)
  • Braking Arrangements (AREA)
  • Switch Cases, Indication, And Locking (AREA)
EP86111088A 1985-08-14 1986-08-11 Relais électromagnétique à deux armatures Expired EP0211446B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86111088T ATE48049T1 (de) 1985-08-14 1986-08-11 Elektromagnetisches relais mit zwei ankern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3529158 1985-08-14
DE3529158 1985-08-14

Publications (2)

Publication Number Publication Date
EP0211446A1 true EP0211446A1 (fr) 1987-02-25
EP0211446B1 EP0211446B1 (fr) 1989-11-15

Family

ID=6278503

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86111088A Expired EP0211446B1 (fr) 1985-08-14 1986-08-11 Relais électromagnétique à deux armatures

Country Status (5)

Country Link
US (1) US4682133A (fr)
EP (1) EP0211446B1 (fr)
JP (1) JPS6240122A (fr)
AT (1) ATE48049T1 (fr)
DE (1) DE3666994D1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3545356A1 (de) * 1985-12-20 1987-06-25 Siemens Ag Sicherheits-schaltrelais
EP0267430A1 (fr) * 1986-10-08 1988-05-18 Omron Tateisi Electronics Co. Relais électromagnétique
EP0329138A1 (fr) * 1988-02-19 1989-08-23 Siemens Aktiengesellschaft Relais électromagnétique
WO1995012206A1 (fr) * 1993-10-25 1995-05-04 Manfred Menini Interrupteur de puissance commande
WO2000038207A1 (fr) * 1998-12-22 2000-06-29 Tyco Electronics Logistics Ag Relais electromagnetique
DE10035173C1 (de) * 2000-07-19 2002-05-08 Matsushita Electric Works Europe Ag Magnetsystem für ein elektromagnetisches Relais
CN102867689A (zh) * 2012-09-14 2013-01-09 贵州振华群英电器有限公司 小型桥式双气隙结构密封直流电磁继电器
DE112009005402B4 (de) * 2009-11-26 2014-07-31 Toyota Jidosha Kabushiki Kaisha Reaktor-Sicherungsstruktur
US10460895B2 (en) 2015-03-20 2019-10-29 Pilz Gmbh & Co. Kg Safety switching device for fail-safely disconnecting an electrical load

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5025239A (en) * 1988-04-01 1991-06-18 Minolta Camera Kabushiki Kaisha Electromagnetic actuator for cameras and the like
DE4320831C1 (de) * 1993-06-23 1994-07-07 Hella Kg Hueck & Co Ankerlagerung für ein Klappankerrelais
DE19515322C2 (de) * 1995-04-20 1997-12-04 Brose Fahrzeugteile Antriebsvorrichtung mit einem Elektromotor und einem den Motorstrom schaltenden Relais
AU3597997A (en) * 1996-07-16 1998-02-09 Ewd L.L.C. Circuit protection arrangements
US6891458B2 (en) 1997-06-06 2005-05-10 Richard G. Hyatt Jr. Electronic cam assembly
US6349022B1 (en) 1998-09-18 2002-02-19 Tyco Electronics Corporation Latching protection circuit
DE102011081854A1 (de) * 2011-08-31 2013-02-28 Siemens Aktiengesellschaft Vorrichtung zur Lagerung eines Klappankers
DE102012202084A1 (de) * 2012-02-13 2013-08-14 Siemens Aktiengesellschaft Klappankerlagerung für magnetischen Auslöser

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR612428A (fr) * 1923-08-14 1926-10-23 Dispositif de relais électro-magnétique à plusieurs armatures pour la mise en service automatique d'un circuit de secours et la protection du circuit principal dans les installations d'éclairage pour automobiles et analogues
FR783822A (fr) * 1934-03-30 1935-07-18 Radio Electr Soc Fr Relais de manipulation rapide
GB621770A (en) * 1946-12-31 1949-04-19 Electro Methods Ltd Improvements in or relating to electromagnetic relays
FR2204870A1 (fr) * 1972-11-02 1974-05-24 Chauvin Arnoux Sa

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1383494A (en) * 1916-08-25 1921-07-05 Briggs & Stratton Company Regulator
US1581830A (en) * 1923-05-14 1926-04-20 Gen Electric Circuit interrupter
US1795787A (en) * 1929-05-08 1931-03-10 Westinghouse Electric & Mfg Co Inductor relay
US2353377A (en) * 1942-04-03 1944-07-11 R W Hood Shockproof relay
DE2112085A1 (de) * 1971-03-12 1972-09-14 Siemens Ag Elektromagnetisches Relais

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR612428A (fr) * 1923-08-14 1926-10-23 Dispositif de relais électro-magnétique à plusieurs armatures pour la mise en service automatique d'un circuit de secours et la protection du circuit principal dans les installations d'éclairage pour automobiles et analogues
FR783822A (fr) * 1934-03-30 1935-07-18 Radio Electr Soc Fr Relais de manipulation rapide
GB621770A (en) * 1946-12-31 1949-04-19 Electro Methods Ltd Improvements in or relating to electromagnetic relays
FR2204870A1 (fr) * 1972-11-02 1974-05-24 Chauvin Arnoux Sa

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3545356A1 (de) * 1985-12-20 1987-06-25 Siemens Ag Sicherheits-schaltrelais
EP0267430A1 (fr) * 1986-10-08 1988-05-18 Omron Tateisi Electronics Co. Relais électromagnétique
US4833435A (en) * 1986-10-08 1989-05-23 Omron Tateisi Electronics Co. Electromagnetic relay
EP0329138A1 (fr) * 1988-02-19 1989-08-23 Siemens Aktiengesellschaft Relais électromagnétique
WO1995012206A1 (fr) * 1993-10-25 1995-05-04 Manfred Menini Interrupteur de puissance commande
FR2711839A1 (fr) * 1993-10-25 1995-05-05 Menini Manfred Interrupteur de puissance commandé.
WO2000038207A1 (fr) * 1998-12-22 2000-06-29 Tyco Electronics Logistics Ag Relais electromagnetique
DE10035173C1 (de) * 2000-07-19 2002-05-08 Matsushita Electric Works Europe Ag Magnetsystem für ein elektromagnetisches Relais
DE112009005402B4 (de) * 2009-11-26 2014-07-31 Toyota Jidosha Kabushiki Kaisha Reaktor-Sicherungsstruktur
CN102867689A (zh) * 2012-09-14 2013-01-09 贵州振华群英电器有限公司 小型桥式双气隙结构密封直流电磁继电器
US10460895B2 (en) 2015-03-20 2019-10-29 Pilz Gmbh & Co. Kg Safety switching device for fail-safely disconnecting an electrical load

Also Published As

Publication number Publication date
US4682133A (en) 1987-07-21
ATE48049T1 (de) 1989-12-15
DE3666994D1 (en) 1989-12-21
EP0211446B1 (fr) 1989-11-15
JPS6240122A (ja) 1987-02-21

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