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EP0078324A1 - Relais electromagnetique polarise - Google Patents

Relais electromagnetique polarise Download PDF

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Publication number
EP0078324A1
EP0078324A1 EP82901306A EP82901306A EP0078324A1 EP 0078324 A1 EP0078324 A1 EP 0078324A1 EP 82901306 A EP82901306 A EP 82901306A EP 82901306 A EP82901306 A EP 82901306A EP 0078324 A1 EP0078324 A1 EP 0078324A1
Authority
EP
European Patent Office
Prior art keywords
armature
yoke
yokes
movable block
coil
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
EP82901306A
Other languages
German (de)
English (en)
Other versions
EP0078324B1 (fr
EP0078324A4 (fr
Inventor
Hidetoshi Matsushita
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
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
Priority claimed from JP6560181A external-priority patent/JPS57180831A/ja
Priority claimed from JP6560281A external-priority patent/JPS57180832A/ja
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Publication of EP0078324A1 publication Critical patent/EP0078324A1/fr
Publication of EP0078324A4 publication Critical patent/EP0078324A4/fr
Application granted granted Critical
Publication of EP0078324B1 publication Critical patent/EP0078324B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • H01F7/1615—Armatures or stationary parts of magnetic circuit having permanent magnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1638—Armatures not entering the winding
    • H01F7/1646—Armatures or stationary parts of magnetic circuit having permanent magnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2209—Polarised relays with rectilinearly movable armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
    • H01F7/122—Guiding or setting position of armatures, e.g. retaining armatures in their end position by permanent magnets

Definitions

  • the present invention relates to the so-called polarized relay, in which a permanent magnet lies in a magnetic circuit, which consists of an armature and a yoke, the armature being moved by superimposing the magnetic force of the coil with the magnetic flux of the permanent magnet.
  • the invention relates in particular to a polarized relay of the type in which the armature is moved back and forth horizontally.
  • Normal polarized relays are designed so that the center of the armature is rotatably mounted so that the armature can tiltably come into contact with two pole faces of the yoke in diametrically opposite positions.
  • Polarized relays of this construction have the problem that if the three points, namely the diametrically opposite contact surfaces of the armature and the center pivot point, are not exactly positioned with respect to one another, only one pole surface is touched, which results in changes in the operating properties and a reduction in the Anchor stroke result.
  • An upper piece 102, a middle piece 103 and a lower piece 104 form an E-shaped yoke 101, a coil being applied to the middle piece 103 and the upper, middle and lower pieces 102, 103 and 104 forming a permanent magnet 106 that serve as a common anchor and face these pieces.
  • the direction of the magnetic flux generated by the permanent magnet 106 is denoted by X and the direction of the magnetic flux generated by the coil 105 is denoted by Y.
  • the magnetic flux directions X and Y in the air gap between the parts 102, 103, 104 and the permanent magnet 106 are consequently opposite to one another, which results in a repulsive force which moves the permanent magnet 106 serving as an armature in the direction of the arrow Z.
  • the permanent magnet 106 has a magnetic resistance which is about 10,000 times that of the normal yoke (made of iron) amounts and leads to a loss of a high percentage of the magnetic flux from coil 105, thereby reducing the sensitivity of the system.
  • This construction takes advantage of a high sensitivity generated in such a way that the magnetic flux of the coil does not pass through the permanent magnet.
  • Two perpendicular magnet pieces 202, 203 and a core 210a form a U-shaped yoke 201, while a permanent magnet 207, a first magnet piece 205 which rests on one pole of this permanent magnet and a second magnet piece 206 which rests on the other pole of the permanent magnet form the armature block 204, the first magnetic piece 205 being U-shaped and its vertical pieces 208 and 209 facing the outer surfaces of the vertical pieces 202 and 203 of the U-shaped yoke 201.
  • the second magnet piece 206 faces the inner surfaces of the vertical pieces 202 and 203 of the U-shaped yoke 201 and the permanent magnet 207 is held between the first magnet piece 205 and the second magnet piece 206.
  • a coil 210 is located on the U-shaped yoke 201.
  • the magnetic flux X generated by the permanent magnet 207 flows through two magnetic circuits, each of which is from one pole of the permanent magnet 207 through the first magnet piece 205 and the second magnet piece 206 of the armature block 204 and back to the other pole of the permanent magnet 207; the magnetic flux continues to flow through a magnetic circuit that extends from one pole of the permanent magnet 207 sequentially through the second magnet piece 206 of the armature block 204, the U-shaped yoke 201 and the first magnet piece 205 of the armature block 204 and back to the other pole of the permanent magnet 207 .
  • the magnetic flux generated by the coil 201 flows through a magnetic circuit which successively passes through the core 210a, the right-hand vertical piece 203 of the U-shaped yoke 201 (or the left-hand vertical piece 202 in the case of the reverse movement of the armature block), the first magnet piece 205 of the armature block, the permanent magnet 207, the second magnet piece 206 and the left-hand vertical piece 202 of the U-shaped yoke 201 (or the left-hand vertical piece 203 in the case of the reverse movement of the armature block).
  • the second publication has another problem due to the use of a construction in which the permanent magnet is part of the armature blocks is.
  • the speed of movement of the armature block is lower by an amount corresponding to the weight of the permanent magnet 207, while the higher block weight leads to a higher impact force which amplifies the vibrations.
  • the properties become unbalanced and depend on the installation position of the relay.
  • a second problem with the second publication is that the yoke 201 is only present in the upper part of the anchor block 204 and the latter requires a vertically extending clearance between itself and the guide for its horizontal reciprocation so that it is attracted towards the yoke by an amount corresponding to this free space under all circumstances.
  • the direction of the yoke 201 changes depending on the installation position and because of the weight of the anchor block 204, the properties become unbalanced as before.
  • the present invention has solved the various problems of these known polarized relays and provides a polarized relay that is advantageous in the manufacture and applications of polarized relays.
  • a permanent magnet between a first and a second yoke, wherein the first and the second yoke and the permanent magnet form a single block and another ähnli - cher block is present and these blocks are arranged one above the other one, while two Side parts are designed so that they can be brought into contact and out of contact with the pole faces of said upper first and lower second yoke and a horizontal rod, which connects said side parts and passes through a coil, forms an anchor of the horizontally displaceable type , so that the advantage of the anchor of the horizontally displaceable type is used to provide new developments.
  • Another object of the invention is to reduce the percentage loss of magnetic flux from the coil - and to increase sensitivity - by preventing the magnetic flux from the coil from passing through the permanent magnet.
  • Another object of the invention is to avoid attaching the permanent magnet to the armature in order to reduce the armature mass and to increase the speed of the armature movement.
  • An additional object of the invention is to arrange yokes and permanent magnets above and below an armature in order to maintain the balance and To prevent changes in the operating characteristics depending on the installation position.
  • Yet another object of the invention is to provide a polarized relay of the type in which the armature is moved horizontally.
  • a first yoke 1 is U-shaped composed of two side parts 2 and 3 and a horizontal part 4, which connects these side parts 2 and 3, the inner surfaces of the side parts 2 and 3 pole faces 2a and 3a form.
  • a second yoke 5 is shorter than the distance between the side parts 2 and 3 of the first yoke and is arranged opposite the horizontal part 4.
  • the outer surfaces of the second yoke 5 form pole surfaces 5a and 5b.
  • a permanent magnet 6 is arranged between the first and the second yoke and the direction of its magnetization axis is perpendicular.
  • the first yoke 1 and the second yoke 5 and the permanent magnet 6 form a block.
  • An anchor 7 of the horizontally displaceable type consists in H-shape of two side pieces 8 and 9 and a horizontal rod 10 which connects the two side pieces 8 and 9, the inner surfaces and the outer surfaces of the side pieces 8 and 9 pole faces 8a, 8b, 9a , 9b form.
  • the inner and outer pole faces 8a, 8b, 9a, 9b of the side pieces 8 and 9 face the inner and outer pole faces 2a, 3a, 5a, 5b of the first and second yokes 1 and 5 and limit air gaps a and b and c or b.
  • the horizontal rod 10 of the armature 7 runs through a coil 11.
  • Fig. 1 shows the basic principle, wherein the solid lines X denote the flux of the permanent magnet 6 and the dashed lines y the magnetic flux of the coil 11.
  • the magnetic flux X of the permanent magnet 6 flows as follows.
  • N pole of the permanent magnet 6 ⁇ second yoke 5 ⁇ air gaps b - and c ⁇ side pieces 8, 9 of the armature 7 ⁇ air gaps a, d ⁇ side parts 2, 3 of the first yoke 1 ⁇ horizontal part 4 ⁇ S pole.
  • the magnetic flux Y of the coil 11 is as follows.
  • Coil 11 ⁇ horizontal rod 10 of armature 7 ⁇ left-hand side piece 8 ⁇ air gap a ⁇ left-hand side part 2 of first yoke 1 ⁇ horizontal part 4 ⁇ right-hand side part 3 ⁇ air gap d ⁇ right-hand side part 9 of armature 7 ⁇ horizontal rod 10.
  • a look at the air gaps a, b, c, d shows that the magnetic fluxes X and Y of the permanent magnet 6 and the coil 7 are rectified in the air gaps a and c, and are opposed to one another in the air gaps b and d.
  • the magnetic fluxes X and Y in the first yoke 1, in the second yoke 5 and in the armature 7 therefore result where they are rectified and overlap, a tightening force and, where they face each other and cancel each other out, a repulsive force, so that the armature 7 in Fig. 1 shifts horizontally to the left, as indicated by the arrow Z, until the outer The pole face 8a of the left-hand side piece 8 of the armature 7 rests on the inner pole faces 2a of the right-hand side part 2 of the first yoke 1 and the inner pole face 9a of the right-hand side piece 9 of the armature 7 on the outside pole faces 5b of the second yoke 5.
  • the directions of the magnetic fluxes in the air gaps a, b, c, d are reversed. They are directed in opposite directions in the air gaps a and c and in the same direction in the air gaps b and d, so that the armature 7 moves horizontally to the right, as indicated by the arrow W.
  • the end position reached is maintained by the magnetic fluxes of the permanent magnet 6 as in the previous case.
  • the magnetic flux Y of the coil 11 never passes through the permanent magnet 6, the magneti resistance is high; therefore the sensitivity is high.
  • the armature 7, which is separated from the coil 11 and the permanent magnet 6, moves on its own and its mass is as small as possible.
  • FIGS. 2 to 5 The arrangement shown in FIGS. 2 to 5 is based on the basic principle illustrated in FIG. 1.
  • the upper and lower first yokes 1 are accommodated in a housing 12 made of synthetic resin which is open at the top.
  • the upper and lower first yokes 1 sit on the bottom wall 13 of the housing 12 in a position which is rotated by 90 ° with respect to the position shown in FIG. 1, the left-hand side part 2 and the horizontal part 4 on the Sidewall 14 of the housing adjacent.
  • the coil bobbin 15 for the coil 11 is constructed as follows.
  • the coil 11 is wound on a drum section 16 which has a hole 17 through which the armature 7 extends, the drum section being integrally formed with side walls 18 and 19, between which the upper and lower second yokes 2, opposite the one shown in FIG 1 shown position rotated by 90, are fixed in a position parallel to the coil 11.
  • the side walls 18 and 19 have cutouts 20 to facilitate the installation of the second yokes 5.
  • the right-hand side wall 15 has grooves 21 for receiving connecting parts 22.
  • the top opening of the housing 12 is covered by a hood 23 made of synthetic resin. There is an insulating plate 24 between the hood 23 and the housing 12.
  • the hood 23 is constructed as follows.
  • the hood 23 includes an upper wall 25, side walls 26 including low, opposing side walls, outer dividers 27 which connect the upper wall 25 and the lower side walls 26 and divide them into chambers, inner dividers 28 which are aligned with the outer dividers 27 , and a downwardly open cavity 29 that crosses the inner dividers 28.
  • Outer connections 30 are fastened in opposite outer chambers which are delimited by said opposite side walls 26 of the hood 23 and the outer separating webs 27.
  • the opposite connections 30 at the right-hand end have integrally formed, vertical insertion tongues 31, which are designed for insertion into the connection parts 22 of the coil former 15 in order to establish the electrical connection to the coil 11 when the hood 23 and the housing 12 are assembled.
  • the other connections 30 are provided with fixed contacts 32 and arranged in opposite inner chambers 33, which are delimited by the inner separating webs 28.
  • the movable block 34 is formed with through transverse holes 35 at the locations associated with the inner chambers 33 of the hood 23, where contact pieces 36 are arranged, which are provided with protruding contacts 37 on opposite sides and helical compression springs 38 for the contact pressure.
  • the contacts 37 in the movable block 34 and the contacts 32 in the hood 23 face each other in the inner chambers 23 and come to rest on one another or separate from one another when the movable block 34 moves.
  • connection between the movable block 34 and the armature 7 takes place via a bell crank 39.
  • the deflection lever 39 receives in its center an axis 40 which is mounted in receiving holes 41 in the right-hand side wall 19 of the bobbin 15.
  • an axle 42 is inserted into the lower end of the bell crank, this axle fits into a groove 44 in a connecting piece 43 from above and the right-hand end of the armature 7 is inserted into the connecting piece 43 and compressed in this way that there is a section 7b preventing slipping out.
  • the left-hand end of the armature 7 is inserted into a left-hand side part 8 and is also compressed, so that there is a section 7a preventing it from slipping out.
  • a non-magnetic plate 45 is used. These plates 45 are intended to cut off the opposite ends of the characteristic magnetic curve of the permanent magnets 6 so that the latter can be used in the most stable region of the curve.
  • the armature 7 is pressed elastically in the direction of the arrow Z by an angled leaf spring 47.
  • the angled leaf spring 47 rests with its apex 47a on the left side of the section 47a and its opposite ends 47b rest on the left-hand side wall 14.
  • the movable block 34 is elastically pressed by a coil spring 48 in a direction opposite to the direction of the arrow V.
  • the coil spring 48 is located between a position indicator 49 of the movable block 34 and the left-hand side wall 26 of the hood 23.
  • the position indicator 49 of the movable block 37 protrudes upward through a small hole 50 in the upper wall 25 of the hood 23 and enables its position it to determine the inner effect from the outside.
  • a terminal cover plate-51 is placed on the top wall 25 of the hood 23 from above. Screwdriver guide holes 53, the number of which corresponds to the opposite terminals 30, are provided in the terminal cover plate 51.
  • connection cover plate 51 has, on opposite sides, downward-pointing lugs 56, which are each arranged between adjacent outer separating webs 27 of the hood 23 in order to cover the connections 30 as far as possible.
  • FIG. 1 This shows another embodiment of the invention, which does not deviate from the basic principle illustrated in FIG. 1.
  • the first and second yokes 1 and 5 and the permanent magnets 6, which are shown in FIGS. 2 to 5 as plate-shaped and separated parts, have a cylindrical shape and the number of parts is reduced.
  • a first cylindrical yoke 57 is divided into a cylindrical body 57a and a cap 57b, which are connected to one another via a thread 58.
  • a cylindrical second yoke 59 and a cylindrical permanent magnet 60 are inserted.
  • the area of the right-hand pole face 5b of the second yoke 5 is larger than that of the left-hand pole face 5a.
  • a: side piece 61 which has a stronger magnetic flux of the Per generated magnet 6; this arrangement results in the design with the so-called "one-directional mode of operation" (also referred to as a monostable design), in which when the current is switched off by the coil 11 and after the armature 7 moves in the direction of the arrow W, this is caused by the magnetic flux of the strong one Permanent magnet 6 is withdrawn in the direction of arrow Z.
  • the arrangement shown here is the design with the so-called “three-directional mode of operation” (also referred to as tristable design), in which the horizontal rod 10 of the armature 7 is divided in the middle into two symmetrical halves, with one between these two halves 7a and 7b used coil spring 62, which presses the halves elastically away from each other.
  • three-directional mode of operation also referred to as tristable design
  • Fig. 8 shows a first working state in which the magnetic fluxes of the permanent magnets 6 are effective alone and the halves 7a and 7b are pressed elastically away from each other by the coil spring 62, so that the side parts 2 and 3 of the first yokes 1 and the side parts 8 and 9 of the armature 7 are pulled towards one another in the air gaps a and d, while the second yokes 5 and the side pieces 8 and 9 of the armature 7 are separated from one another in the air gaps b and c.
  • Fig. 9 shows a second working position in which a current flows through the coil in such a direction that the coil generates a magnetic flux Y 1 and the magnetic flux Y 1 of the coil 11 and the magnetic fluxes X of the permanent magnets 6 in the air gaps a and c are opposite to each other and run in the same direction in the air gaps b and d.
  • Fig. 8 Therefore, only the left half 7a is moved to the right against the force of the coil spring 62 in accordance with the arrow W, so that the second yokes 5 and the left side piece 8 rest on the left half 7a, while the right side piece 9 of the right half 7b in Edition on the right side parts 3 of the first yokes 1 remains.
  • the current through the coil 11 is turned off, the state shown in Fig. 8 is restored.
  • Fig. 10 shows a third working position in which a current flows through the coil 11 in such a direction that the coil generates a magnetic flux Y 2 , which is opposite to that in Fig. 9, so that the magnetic flux Y 2 of the coil 11 and the magnetic fluxes X of the permanent magnets 6 in the air gaps a and c run in the same direction and are directed in opposite directions in the air gaps b and d.
  • a current flows through the coil 11 in such a direction that the coil generates a magnetic flux Y 2 , which is opposite to that in Fig. 9, so that the magnetic flux Y 2 of the coil 11 and the magnetic fluxes X of the permanent magnets 6 in the air gaps a and c run in the same direction and are directed in opposite directions in the air gaps b and d.
  • FIG. 11 shows a further development of the basic principle illustrated in FIG. 1.
  • armature 7 and the movable block 34 are arranged horizontally and parallel to one another in the embodiment illustrated in FIGS. 2 to 5, in the present embodiment the armature 7 and the movable block 34 is stacked and colinear.
  • the essential parts are shown in a section in the same direction as in Fig. 2.
  • the angled leaf spring 47 sits on the bottom wall 13 of the housing 12, and the left side parts 2 of the first yokes 1 also sit on it.
  • the movable block 34 being designed so that it is perpendicular and coaxial with the armature 7 is displaceable. Therefore, the lower angled leaf spring 47 constantly presses the armature 7 and the movable block 34 upward, while the upper angled leaf spring 67 constantly presses these parts downward.
  • the connection between the movable block 34 and the connecting piece 63 is established by inserting a pin 71 into pin receiving holes 69 in the opposite legs 65 of the connecting piece 63 and the pin receiving hole 70 in the movable block 34.
  • the housing 12 and the Hood 23 are connected to each other via screws 72.
  • the contacts 32, 37, the contact cover plate 51, etc. are the same as in the embodiment in FIGS. 2 to 5.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)

Abstract

Un relais electromagnetique polarise se compose d'une section de joug possedant des entrefers occupant quatre positions en diagonale et d'un bloc d'armature en forme de H (7) possedant quatre parties d'armature qui sont positionnees dans les entrefers de la section de joug, respectivement, disposees de maniere a permettre un mouvement parallele. La section de joug se compose de deux unites de joug, chacune desquelles est composee d'une premiere piece polaire (1) approximativement en forme de U, un aimant permanent (6) dont l'un des poles est positionne au-dessus du centre de la surface inferieure de la premiere piece polaire, et une deuxieme piece polaire (5) en contact avec l'autre pole de l'aimant permanent (6) et formant des entrefers entre ses deux extremites et les deux extremites libres de la premiere piece polaire (1), respectivement. Dans le relais electromagnetique polarise de la presente invention, le bloc d'armature est un element mobile de faible poids etant donne qu'il ne contient aucun aimant permanent et le chemin de flux magnetique dans la bobine electromagnetique ne comprend aucun aimant permanent, ce qui se traduit par un rendement magnetique eleve, de sorte que la vitesse de fonctionnement est elevee, la sensibilite est bonne et le mecanisme fonctionne avec une force d'impact reduite.
EP82901306A 1981-04-30 1982-04-30 Relais electromagnetique polarise Expired EP0078324B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP6560181A JPS57180831A (en) 1981-04-30 1981-04-30 Magnetic circuit for polarized relay
JP65602/81 1981-04-30
JP6560281A JPS57180832A (en) 1981-04-30 1981-04-30 Polarized relay
JP65601/81 1981-04-30

Publications (3)

Publication Number Publication Date
EP0078324A1 true EP0078324A1 (fr) 1983-05-11
EP0078324A4 EP0078324A4 (fr) 1985-10-28
EP0078324B1 EP0078324B1 (fr) 1987-08-12

Family

ID=26406733

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82901306A Expired EP0078324B1 (fr) 1981-04-30 1982-04-30 Relais electromagnetique polarise

Country Status (7)

Country Link
US (1) US4509026A (fr)
EP (1) EP0078324B1 (fr)
AT (1) AT384497B (fr)
CH (1) CH662671A5 (fr)
DE (1) DE3243266C2 (fr)
GB (1) GB2112212B (fr)
WO (1) WO1982003944A1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2554960A1 (fr) * 1983-11-16 1985-05-17 Telemecanique Electrique Electro-aimant comprenant des culasses et une armature comportant un aimant permanent muni sur ses faces polaires, de pieces polaires debordant de l'axe de l'aimant, cet axe etant perpendiculaire a la direction du mouvement
FR2568056A1 (fr) * 1984-07-20 1986-01-24 Telemecanique Electrique Electroaimant polarise a trois etats et circuit pour sa commande
EP0216160A3 (en) * 1985-08-23 1989-08-09 Omron Tateisi Electronics Co. Electromagnetic contactor
EP0248272A3 (en) * 1986-06-02 1989-09-20 Fuji Electric Co., Ltd. Polarized electromagnet device
EP0373271A1 (fr) * 1988-12-15 1990-06-20 Circuit Breaker Industries Limited Déclencheur électromagnétique à circuit shunt
DE3908319A1 (de) * 1989-03-07 1990-09-20 Matsushita Electric Works Ltd Elektromagnetischer kontaktgeber
EP0370452A3 (fr) * 1988-11-22 1991-11-27 Omron Corporation Relais électromagnétique ayant une disposition de bornes modifiée
EP0568028A1 (fr) * 1992-04-30 1993-11-03 Jos. Schneider Optische Werke Kreuznach GmbH & Co. KG Moteur linéaire électromagnétique
WO1996018203A1 (fr) * 1994-12-06 1996-06-13 Brose Fahrzeugteile Gmbh & Co. Kg Relais polarise
WO1996033547A1 (fr) * 1995-04-20 1996-10-24 Brose Fahrzeugteile Gmbh & Co. Kg Dispositif d'entrainement comportant un moteur electrique et un relais commutant le courant du moteur
WO1997033293A1 (fr) * 1996-03-06 1997-09-12 Siemens Aktiengesellschaft Dispositif de commutation electromagnetique
FR2875637A1 (fr) * 2004-09-22 2006-03-24 Schneider Electric Ind Sas Actionneur electromagnetique bistable a serrure integree.
CN105531790A (zh) * 2014-05-20 2016-04-27 富士电机机器制御株式会社 直流操作用有极电磁体和使用其的电磁接触器

Families Citing this family (33)

* Cited by examiner, † Cited by third party
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JPS60261111A (ja) * 1984-06-08 1985-12-24 Mitsubishi Mining & Cement Co Ltd 電磁アクチユエ−タ
DE3563140D1 (en) * 1984-08-20 1988-07-07 Telemecanique Electrique Polarised electromagnet presenting a symmetric disposition
FR2569299B1 (fr) * 1984-08-20 1986-12-05 Telemecanique Electrique Electro-aimant polarise presentant une disposition symetrique
FR2569298B1 (fr) * 1984-08-20 1986-12-05 Telemecanique Electrique Electro-aimant polarise a fonctionnement bi- ou mono-stable
FR2573567B1 (fr) * 1984-11-19 1987-01-09 Telemecanique Electrique Electroaimant polarise presentant une disposition symetrique
US4688010A (en) * 1984-12-22 1987-08-18 Matsushita Electric Works, Ltd. Electromagnetic relay
DE3576428D1 (de) * 1984-12-24 1990-04-12 Matsushita Electric Works Ltd Fernsteuerbares relais.
FR2586324B1 (fr) * 1985-08-16 1988-11-10 Telemecanique Electrique Electro-aimant a courant continu a mouvement de translation
GB2192306A (en) * 1986-07-03 1988-01-06 Stc Plc High sensitivity relay for switching high currents
EP0321664B1 (fr) * 1987-12-23 1994-12-28 Electric Power Research Institute, Inc Electro-aimant polarisé
JPH07118252B2 (ja) * 1988-06-09 1995-12-18 松下電工株式会社 リモートコントロール式回路しゃ断器
JP2552179B2 (ja) * 1988-09-29 1996-11-06 三菱電機株式会社 有極電磁石装置
US4931758A (en) * 1988-12-09 1990-06-05 Circuit Breaker Industries Limited Electro-magnetic shunt trip device
GB2229039B (en) * 1989-03-07 1994-01-26 Matsushita Electric Works Ltd Electromagnetic contactor
GB9318876D0 (en) * 1993-09-11 1993-10-27 Mckean Brian A bistable permanent magnet actuator for operation of circuit breakers
JP3333898B2 (ja) * 1996-07-03 2002-10-15 富士電機株式会社 電磁接触器
WO2000020786A1 (fr) * 1998-10-08 2000-04-13 Camcon Limited Entrainements magnetiques
GB2342504B (en) * 1998-10-08 2003-04-23 Wladyslaw Wygnanski Magnetic drives
US6791442B1 (en) 2003-11-21 2004-09-14 Trombetta, Llc Magnetic latching solenoid
US20080023229A1 (en) * 2006-05-16 2008-01-31 Schlumberger Technology Corporation Tri stable actuator apparatus and method
GB2450681A (en) * 2007-06-26 2009-01-07 Schlumberger Holdings Multi-position electromagnetic actuator with spring return
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ATA902482A (de) 1987-04-15
GB2112212A (en) 1983-07-13
DE3243266C2 (de) 1986-06-26
DE3243266T1 (de) 1983-05-05
US4509026A (en) 1985-04-02
EP0078324B1 (fr) 1987-08-12
WO1982003944A1 (fr) 1982-11-11
AT384497B (de) 1987-11-25
EP0078324A4 (fr) 1985-10-28
CH662671A5 (de) 1987-10-15
GB2112212B (en) 1985-10-02

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