EP0686989B1 - Appareil bistable de commutation - Google Patents

Appareil bistable de commutation Download PDF

Info

Publication number
EP0686989B1
EP0686989B1 EP95890099A EP95890099A EP0686989B1 EP 0686989 B1 EP0686989 B1 EP 0686989B1 EP 95890099 A EP95890099 A EP 95890099A EP 95890099 A EP95890099 A EP 95890099A EP 0686989 B1 EP0686989 B1 EP 0686989B1
Authority
EP
European Patent Office
Prior art keywords
permanent magnet
yoke
section
cross
air gap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95890099A
Other languages
German (de)
English (en)
Other versions
EP0686989A1 (fr
Inventor
Tibor Dipl.-Ing. Polgar
Rudolf Mikl
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.)
Tyco Electronics Austria GmbH
Original Assignee
Tyco Electronics Austria GmbH
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 Tyco Electronics Austria GmbH filed Critical Tyco Electronics Austria GmbH
Publication of EP0686989A1 publication Critical patent/EP0686989A1/fr
Application granted granted Critical
Publication of EP0686989B1 publication Critical patent/EP0686989B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01H51/22—Polarised relays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/01—Relays in which the armature is maintained in one position by a permanent magnet and freed by energisation of a coil producing an opposing magnetic field
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/12—Armature is movable between two limit positions of rest and is moved in both directions due to the energisation of one or the other of two electromagnets without the storage of energy to effect the return movement
    • H01H51/16—Armature is movable between two limit positions of rest and is moved in both directions due to the energisation of one or the other of two electromagnets without the storage of energy to effect the return movement with intermediate neutral position of rest
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/32—Electromagnetic mechanisms having permanently magnetised part

Definitions

  • the invention relates to a bistable electrical switching device with a yoke and a core, an armature and at least one permanent magnet, and one Control coil existing magnet system in which the armature is held by means of an armature spring is and in a switching position between the armature and a pole face of the yoke or Kernes an air gap is present and the anchor mechanically with a switching element is coupled, wherein at least one magnet section in the course of the yoke or the core is provided, within which - seen in cross section - a part of such Cross-section is formed from the at least one permanent magnet.
  • a is usually in the area of the core or the yoke Permanent magnet arranged with a cross section adapted to the core or the yoke
  • a bistable electrical switching device of the type mentioned in which a U-shaped permanent magnet forms part of a U-shaped magnetic circuit on the Each leg a control coil is provided, via which in the region of the leg ends arranged armature is movable between two switching positions.
  • the thighs are through two connecting links coupled together via air gaps, wherein one of the links is broken and at the break points each connects to the poles of the U-shaped permanent magnet. Over the air gap between A magnetic shunt is created between the two connecting links to one to enable a stable operating point of the magnetic circuit.
  • the aim of the invention is to propose a switching device of the type mentioned in the introduction, in which the permanent magnet in the dropped position of the armature only has small forces exerts this and the energy to switch between the two states of Switching device is very low.
  • Another object of the invention is to provide a switching device in which the measures to achieve the lowest possible reversal energy at a very low level Space can be concentrated so that miniaturization of this switching device is stirrable.
  • this is done in a bistable switching device of the type mentioned thereby achieved that the cross section of the at least one permanent magnet is smaller than that Cross section of the parts of the core directly adjoining the magnet section or of the yoke is which parts in some areas with the pole faces of the permanent magnet Are butt contact, and that within the magnet section of the core or the yoke over the entire length of which is interrupted or the cross section is narrowed.
  • the proposed measures make the permanent magnet serial in magnetic terms built into the control coil that surrounds the core. This ensures that the permanent magnet Force caused by the control coil in the working air gap of the magnet system of their polarity, can be strengthened or weakened. Because only part of the cross section is formed from the permanent magnet or magnets, there is a leakage flux over the parallel switched residual cross section. These measures make it easy to do appropriate dimensioning of the permanent magnet possible to ensure that when closed Anchor the flow of the permanent magnet predominantly through the series connection The yoke, core and armature flow, resulting in a high holding force for the armature.
  • a further development of the invention can consist in that within the magnet section an air gap between the immediately adjacent parts of the core or yoke is formed.
  • the proposed solution has the advantage of a very simple structure, the enables simple and inexpensive manufacture of the switching device according to the invention, since only a permanent magnet has to be introduced into a magnetic circuit cross section that in an air gap remains in part of this cross section.
  • Another variant of the invention can consist in that the air gap is annular the permanent magnet is formed.
  • Another feature of the invention can be that the annular air gap in its gap thickness is graded.
  • Another embodiment of the invention can consist in that the permanent magnet itself has a full cross section. As a result, commercially available forms of permanent magnets can be used for production.
  • the further air gap as a cavity in the interior of the permanent magnet is trained.
  • a further embodiment of the invention is that the permanent magnet one with. the circumferential line of the cross section of the magnetic circuit, in the area of the yoke or of the core, has a congruent circumferential line and a constriction of the magnetic circuit surrounds.
  • the permanent magnet is arranged between the pole face of the yoke and a pole plate, with the side of the Permanent magnets spaced apart by an air gap, wart-shaped projections of the pole plate extend, which lie at their highest points on the pole face of the yoke.
  • the part 20 of the cross section is designed as an annular space surrounding the permanent magnet 7.
  • the permanent magnet 7 has a full cross section which is smaller than that of the yoke 6.
  • the leakage flux F S occurring when the armature 4 has fallen off runs in this annular gap and thus in turn weakens the attraction force on the armature 4 in the dropped state.
  • FIG. 4 shows a variant of the arrangement of the permanent magnet 7 from FIG. 3.
  • the annular space 20, which is designed, for example, as an air gap, is graduated in its gap thickness.
  • the mutually facing end faces of the yoke parts 6 'and 6 "are each provided with a central recess 16 in which the permanent magnet 7 is held.
  • the permanent magnet 7 has a cross section which is smaller than that of the recess 16. This is particularly because in order to prevent a magnetic short circuit at the edge of the permanent magnet 7.
  • the height of the permanent magnet 7 is greater than the sum of the depths of the two depressions 16. The size of the steps formed in this way by the depressions 16 allows the leakage flux F S to be dimensioned.
  • the part 20 of the cross section is designed as a cavity 18 in the interior of the permanent magnet 7, the outer circumferential line of which corresponds to that of the cross section of the yoke parts 6 ′ or 6 ′′ a leakage flux F S from the permanent magnet 7.
  • the continuous cavity can be of any shape and does not necessarily have to be arranged centrally, in Fig. 6, in a further variant of the invention, in a section of the magnetic circuit, here the yoke 6, a part of the cross section from a permanent magnet 7, a further part 20 of the cross section from an air gap and the rest of the yoke material.
  • the permanent magnet 7 has a circumferential line which is essentially congruent with the circumferential line of the cross section of the magnetic circuit, here the yoke 6, and surrounds a constriction of this part of the magnetic circuit 6.
  • the yoke 6 is exposed the parts 6 'and 6 "together, each of which has a central projection in the form of a truncated cone at its end and engages with it in the opening of the permanent magnet 7 and adjoins there with its cover surfaces.
  • part 20 of the cross section remains as an air gap, which prevents a magnetic short circuit of the permanent magnet 7.
  • the lugs do not have to be frustoconical, any other form of narrowing of the cross section is also within the scope of the invention.
  • the area goes with the anchor 4 dropped I of the approach 19 'or 19 "into the magnetic saturation, so that the field lines of the permanent magnet partially pass through it, but there is no magnetic short circuit.
  • 8 shows the area of the pole face of the yoke 6. The embodiment shown is that a flat permanent magnet 7 is arranged on the pole face of the yoke 6 so that it occupies only part of the yoke cross section.
  • a pole plate 21 On the permanent magnet 7, a pole plate 21 is placed, which is provided with wart-like projections 22 which protrude into the remaining part of the cross section and have the same height as the permanent magnet 7, which rise on both sides of the permanent magnet 7 and at their highest points on the The pole face of the yoke 6 rest, with an air gap between the warts and the permanent magnet.
  • an annular elevation which rests with its end face on the pole face of the yoke, can be provided around the permanent magnet 7 on the pole plate 21, an annular air gap being provided between the permanent magnet and the annular elevation.
  • FIG. 9 shows an embodiment of the invention, the part 20 of the cross section of a section of the magnetic circuit that is filled with non-magnetic or non-magnetizable material or medium being formed by an air gap.
  • This bistable switching device according to the invention has an L-shaped core 1, on which a control coil 2 is pushed.
  • An armature 4 rests on a pole face 3 of the core 1, which armature is held on the core 1 by means of an armature spring 5, which exerts a corresponding restoring force in order to hold the armature 4 in its fallen position shown.
  • a permanent magnet 7 is arranged, which connects the two parts 6 'and 6 "of the yoke 6.
  • the permanent magnet points 7, according to a variant of the invention, has a smaller cross section than the yoke, which results in 4 stray fluxes F S in this area in the areas of the yoke parts 6 ′, 6 ′′ adjoining the permanent magnets 7.
  • the pole face 8 of the yoke 6 interacts with the armature 4 and delimits a working air gap 9. Furthermore, the armature 4 has an attachment 10 which controls a comb 11 which is in contact with a movable contact 12 which is provided with two contact pills 13 Intervention stands. This contact 12 interacts with two fixed contacts 14, 15.
  • the main flux FHS generated by the control coil 2 amplifies or weakens the magnetic flux FHD of the permanent magnet 7, which is magnetized in the axial direction of the yoke 6, depending on the polarity of the control of the control coil 2.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Claims (9)

  1. Appareil de commutation électrique bistable avec un système magnétique composé d'une culasse d'aimant (6) et d'un tore magnétique (1), d'un induit (4) et d'au moins un aimant permanent (7) ainsi que d'une bobine de contrôle (2), dans lequel l'induit (4) est maintenu par un ressort d'induit (5) et il existe un entrefer entre l'induit (4) et une surface de pôle de la culasse (6) ou du tore (1) dans une position de commutation et l'induit est en liaison mécanique avec un organe de commutation (12), une partie au moins de l'aimant se trouvant sur le parcours de la culasse (6) ou du tore (1) où, en vue en coupe transversale, une partie de la section est formée d'au moins un aimant permanent (7), caractérisé en ce que la section de l'aimant permanent (7) au nombre d'un au moins est plus petite que les parties du tore (1) et de la culasse (6) directement contiguës de la partie d'aimant qui se trouvent par endroits en contact bout à bout avec les surfaces de pôle de l'aimant permanent (7), et en ce que le tore (1) ou la culasse (6) est ouvert sur toute sa longueur ou resserré en section à l'intérieur de la partie d'aimant.
  2. Appareil de commutation selon la revendication 1, caractérisé en ce qu'un entrefer est formé à l'intérieur de la partie d'aimant entre les parties directement contiguës du tore (1) ou de la culasse (6).
  3. Appareil de commutation selon la revendication 2, caractérisé en ce que l'entrefer est annulaire et entoure l'aimant permanent (7).
  4. Appareil de commutation selon la revendication 3, caractérisé en ce que l'entrefer annulaire a une épaisseur étagée.
  5. Appareil de commutation selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'aimant permanent (7) présente une section pleine.
  6. Appareil de commutation selon la revendication 2 ou 3, caractérisé en ce que l'entrefer est conçu comme une cavité à l'intérieur de l'aimant permanent.
  7. Appareil de commutation selon l'une quelconque des revendications précédentes, caractérisé en ce que l'aimant permanent (7) présente une circonférence congruente par rapport à la circonférence de la section du circuit magnétique au niveau de la culasse (6) ou du tore (1) et entoure une zone resserrée du circuit magnétique.
  8. Appareil de commutation selon l'une quelconque des revendications précédentes, caractérisé en ce que l'aimant permanent (7) est disposé entre la surface de pôle de la culasse (6) et une joue (21), des saillies écartées en forme de bouton (22) de la joue (21), qui s'étendent sur les côtés de l'aimant permanent à travers un entrefer et s'appuient à leur sommet sur la surface de pôle de la culasse (6).
  9. Appareil de commutation selon l'une quelconque des revendications précédentes, caractérisé en ce l'aimant permanent (7) est disposé entre la surface de pôle de la culasse (6) et une joue (21), une saillie annulaire de la joue (21) entourant l'aimant permanent (7) en formant un entrefer cylindrique, laquelle saillie annulaire repose sur sa face frontale sur la surface de pôle de la culasse.
EP95890099A 1994-06-08 1995-05-29 Appareil bistable de commutation Expired - Lifetime EP0686989B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT1149/94 1994-06-08
AT0114994A AT414183B (de) 1994-06-08 1994-06-08 Bistabile schaltvorrichtung
AT114994 1994-06-08

Publications (2)

Publication Number Publication Date
EP0686989A1 EP0686989A1 (fr) 1995-12-13
EP0686989B1 true EP0686989B1 (fr) 2001-10-31

Family

ID=3507674

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95890099A Expired - Lifetime EP0686989B1 (fr) 1994-06-08 1995-05-29 Appareil bistable de commutation

Country Status (6)

Country Link
US (1) US5703554A (fr)
EP (1) EP0686989B1 (fr)
AT (1) AT414183B (fr)
DE (1) DE59509770D1 (fr)
ES (1) ES2166810T3 (fr)
PL (1) PL308976A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004018791A1 (de) * 2004-04-15 2005-11-03 Tyco Electronics Amp Gmbh Relaisantrieb, Relais und Bausatz für monostabiles und bistabiles Relais
DE102005030044A1 (de) * 2005-06-27 2007-01-04 Tyco Electronics Amp Gmbh Relais mit einem mit Klemmvorsprüngen versehenen Kern und Montageverfahren
DE102005030046A1 (de) * 2005-06-27 2007-01-04 Tyco Electronics Amp Gmbh Elektromechanisches Öffnerrelais und ein Verfahren, mit dem Ströme geschaltet werden können
DE102012106330A1 (de) 2012-07-13 2014-01-16 Tyco Electronics Amp Gmbh Spulenkern für elektromagnetischen Antrieb und selbiger sowie Verfahren zu dessen Herstellung

Families Citing this family (11)

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Publication number Priority date Publication date Assignee Title
DE19641407C1 (de) * 1996-10-08 1998-01-15 Eh Schrack Components Ag Bistabiles Elektromagnetsystem für ein Relais
DE102005051942B3 (de) * 2005-10-29 2007-03-29 Tyco Electronics Amp Gmbh Bistabile elektrische Schaltvorrichtung
ES2326139T3 (es) * 2006-06-01 2009-10-01 Pilz Auslandsbeteiligungen Gmbh Dispositivo para mantenimiento en posicion cerrada supervisable.
FR2987493B1 (fr) * 2012-02-29 2014-03-21 Hager Electro Sas Actionneur electromagnetique a grande force de deverrouillage
FR2987491B1 (fr) * 2012-02-29 2022-02-25 Hager Electro Sas Actionneur electromagnetique a bobinage externe
US9113591B2 (en) 2012-06-18 2015-08-25 Raven Industries, Inc. Implement for adjustably metering an agricultural field input according to different frame sections
JP6171286B2 (ja) * 2012-08-24 2017-08-02 オムロン株式会社 電磁石装置
US11160204B2 (en) 2013-03-15 2021-11-02 Raven Industries, Inc. Localized product injection system for an agricultural sprayer
US10173236B2 (en) 2013-10-17 2019-01-08 Raven Industries, Inc. Nozzle control system and method
BR112016008517B1 (pt) 2013-10-17 2021-06-22 Raven Industries, Inc Método e sistema para controlar taxa de fluxo de bocal de um produto agrícola em um aspersor agrícola, sistema de controle de aspersor e método para controlar características de aspersão de bocais de aspersão em um sistema aspersor
US11612160B2 (en) 2019-10-04 2023-03-28 Raven Industries, Inc. Valve control system and method

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004018791A1 (de) * 2004-04-15 2005-11-03 Tyco Electronics Amp Gmbh Relaisantrieb, Relais und Bausatz für monostabiles und bistabiles Relais
DE102005030044A1 (de) * 2005-06-27 2007-01-04 Tyco Electronics Amp Gmbh Relais mit einem mit Klemmvorsprüngen versehenen Kern und Montageverfahren
DE102005030046A1 (de) * 2005-06-27 2007-01-04 Tyco Electronics Amp Gmbh Elektromechanisches Öffnerrelais und ein Verfahren, mit dem Ströme geschaltet werden können
DE102005030046B4 (de) * 2005-06-27 2020-03-12 Te Connectivity Germany Gmbh Elektromechanisches Öffnerrelais und ein Verfahren, mit dem Ströme geschaltet werden können
DE102012106330A1 (de) 2012-07-13 2014-01-16 Tyco Electronics Amp Gmbh Spulenkern für elektromagnetischen Antrieb und selbiger sowie Verfahren zu dessen Herstellung

Also Published As

Publication number Publication date
AT414183B (de) 2006-10-15
EP0686989A1 (fr) 1995-12-13
PL308976A1 (en) 1995-12-11
DE59509770D1 (de) 2001-12-06
ES2166810T3 (es) 2002-05-01
ATA114994A (de) 2005-12-15
US5703554A (en) 1997-12-30

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