EP0072976B1 - Relais électromagnétique polarisé - Google Patents

Relais électromagnétique polarisé Download PDF

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Publication number
EP0072976B1
EP0072976B1 EP82107303A EP82107303A EP0072976B1 EP 0072976 B1 EP0072976 B1 EP 0072976B1 EP 82107303 A EP82107303 A EP 82107303A EP 82107303 A EP82107303 A EP 82107303A EP 0072976 B1 EP0072976 B1 EP 0072976B1
Authority
EP
European Patent Office
Prior art keywords
coil
relay
permanent magnet
armature
yoke laminations
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
Application number
EP82107303A
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German (de)
English (en)
Other versions
EP0072976A1 (fr
Inventor
Rolf-Dieter Dipl.-Phys. Kimpel
Ulf Dipl.-Phys. Rauterberg
Horst Dipl.-Ing. Tamm
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
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT82107303T priority Critical patent/ATE14491T1/de
Publication of EP0072976A1 publication Critical patent/EP0072976A1/fr
Application granted granted Critical
Publication of EP0072976B1 publication Critical patent/EP0072976B1/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
    • H01H51/22—Polarised relays
    • H01H51/2236—Polarised relays comprising pivotable armature, pivoting at extremity or bending point of armature
    • H01H51/2245—Armature inside coil

Definitions

  • the invention relates to a polarized electromagnetic relay with a rod-shaped armature arranged within a coil body approximately along the coil axis and supported on one side in the area of the one coil end, with its free end in the area of the other coil end in the space between two angled yoke plates opposite one another Pole shoes protrude, whereby the yoke sheets - lying side by side over a large area in one plane - are magnetically coupled with two poles of the same name of a four-pole permanent magnet arrangement and the two poles of the permanent magnet assembly facing away from the yoke sheets are connected to one another via a flux sheet extending between the two relay ends parallel to the coil axis and next to the coil winding and are magnetically coupled to the supported end of the armature.
  • Such a relay is known from DE-C-2723220.
  • the permanent magnet arrangement is arranged on the front side in front of the coil body, a ferromagnetic housing cap being used as the flux plate.
  • Additional pole shoes formed on the yoke plates enable particularly good coupling of the control flow, so that the relay can be made very sensitive.
  • this system offers the advantage of using the four-pole permanent magnet arrangement that different switching characteristics of the relay can be set without any design differences simply by subsequently magnetizing or adjusting the two permanent magnet ranges. For example, a monostable or bistable switching behavior, optionally also with different response values in both armature positions, can be set on one and the same fully assembled relay.
  • the object of the invention is to modify this known basic principle of a four-pole magnetic circuit in such a way that even more favorable pole surfaces are obtained by arranging the permanent magnet in the relay even more favorably, with very precise optimization between the contact force achievable by the permanent magnet and by coordinating air gaps parallel to the permanent magnet the response sensitivity that can be achieved by good coupling of the control flow circuit becomes possible.
  • space should be gained for at least two changeover contacts which can be actuated by the armature by means of a favorable arrangement of the magnet system.
  • this object is achieved in that the large-area areas of the two yoke plates also extend parallel to the coil axis and further parallel to the flux plate next to the coil winding, and in that the yoke plates and the flux guide plate form an overlap region in which the permanent magnet arrangement is essentially perpendicular to the coil axis Polarization directions is arranged.
  • the pole faces can be made substantially larger than in the case of front-side coupling, which is particularly advantageous for a longer coil with a smaller cross-section.
  • the arrangement according to the invention of the permanent magnet or magnets next to the coil winding means that the permanent magnet lies above the winding in the radial direction. Seen from the connection side of the relay, this can mean that the magnet lies below, to the side or - according to a preferred embodiment - above the coil.
  • Such a flat magnet the extent of which in the direction parallel to the coil axis is a multiple of the extent in the direction of magnetization (approximately perpendicular to the coil axis), also only slightly increases the overall height of the relay by the arrangement next to or above the coil winding. Since the entire coil length is available for the length of the yoke plates and the flux plate, the overlap area of these parts on the one hand and the pole faces of the permanent magnet on the other hand can be chosen to be optimally large, regardless of spatial restrictions.
  • the excitation circuit can also be coupled very well, since very large areas of the yoke plates and the flux plate face each other in the overlap area and thus form a favorable air gap for the transition of the control flow.
  • the overlap area does not have to be completely filled by the permanent magnet, so that in addition to the permanent magnet, another air gap facilitates the transition of the control flow.
  • a very flat permanent magnet can be used, so that the distance which is decisive for the magnetic resistance of the air gap next to its surface is kept small.
  • the two pole shoes are formed on the sides of the yoke plates facing the coil axis and are bent on the end face of the coil body in the direction of the free armature end, parallel to the flat side of the armature. They also face the armature with their flat sides and thus form large pole faces overlapping with the armature.
  • the yoke plates themselves expediently lie between the permanent magnet arrangement and the coil winding, so that the bent pole shoes do not overlap with the magnet or with the flux plate.
  • the flux plate arranged on the outside above the permanent magnet can, according to the available experience, be relatively thin and allows a good coupling of outer pole pieces for the adjustment of the two permanent magnet areas.
  • contact surfaces are expediently provided on the coil former. Furthermore, it is expedient if lugs are formed on the coil flanges, by means of which the pole shoes are pressed against the contact surfaces. When assembling the yoke plates, the two pole shoes can thus be inserted between the contact surfaces and the lugs.
  • pins can also be formed on the coil flanges. It is expedient if these pins of the thermoplastic coil body grip through holes in the flow plate and are deformed to form rivet heads.
  • the permanent magnet arrangement with the yoke plates and the flux plate is wider than the coil diameter, so that a space for contact elements is formed below the yoke plates on both sides of the coil.
  • This space is expediently closed off on the underside of the relay by a base body in which the contact connections are anchored.
  • This base body made of insulating material can furthermore have a central recess for receiving the coil body with a precise fit, so that a precise distance between the pole faces of the pole shoes and the contact elements actuated by the armature is ensured.
  • the relay is expediently closed by a cap made of insulating material, which is put over the coil and forms a circumferential sealing gap with the base body.
  • the magnet system shown schematically in FIGS. 1 and 2 has a flat permanent magnet 1 with the two oppositely polarized magnet regions 1a and 1b.
  • One of the two yoke plates 2 and 3 is coupled to each of these magnetic regions 1a and 1, while the opposite poles of the permanent magnet arrangement are coupled to a flux plate 4.
  • Bent pole pieces 2a and 3a are formed on each of the yoke plates 2 and 3 and enclose the end 5a of a rod-shaped armature 5 to form a working air gap 6.
  • the armature is arranged in a coil 7 along the coil axis and is supported at its other end 5b; the angled leg 4a of the flow plate 4 is coupled to this anchor end 5b to form a small air gap 8.
  • the overlap area can also be chosen to be larger than the pole faces of the permanent magnet 1.
  • the yoke plates 2 and 3 can be brought up to the leg 4a of the flux plate in order to achieve a small air gap 9a. If necessary, a bent tab 3b can also be provided on the yoke plates 2 or 3 in order to further reduce the air gap 9 or 9a.
  • the air gaps 8 and 9 are to be optimized so that the sensitivity is as large as possible, but the permanent magnetic force is not yet weakened too much by the secondary air gap 9.
  • the air gap 8 should be as small as possible, in any case significantly smaller than the air gap 9. The smaller the air gap 9, the smaller the permanent magnetic attraction force acting on the armature, but the greater the sensitivity.
  • FIG. 3 to 5 show a relay designed according to the invention in different views.
  • This relay is built on a base body 11 and closed with an insulating protective cap 12.
  • the edge joint 13 between the base body and the cap is sealed with casting resin 14, the bushings of coil connecting pins 15 also being sealed.
  • On the base body 11 sits in a precisely fitting recess 16, a coil body 17 with the winding 18, which is delimited on the end face by the two coil flanges 19 and 20.
  • a rod-shaped armature 21 extends along the coil axis within the coil body and is supported on the coil flange 20 with its end 21 b and can perform switching movements between two pole pieces 22 and 23 with its free end 21 a.
  • contact surfaces 25 and 26 are provided on the coil former 17, against which the pole shoes 22 and 23 are pressed by lugs 27 and 28 formed on the coil flanges.
  • the pole shoes 22 and 23 are each part of the two yoke plates 29 and 30, which are parallel to the coil axis and to above the coil Base body 11 extend.
  • the region 31a thus forms a large pole area with respect to the yoke plate 29, while the permanent magnet region 31b has a large pole area in common with the yoke plate 30.
  • the pole faces of the four-pole permanent magnet arrangement facing away from the yoke plates are covered by a flux plate 32, which both couples the two permanent magnet regions 31a and 31b to one another and also couples the two regions to the armature end 21b via the angled leg 32a.
  • the control flow circuit is also largely closed via this flow plate 32.
  • An air gap 33 which is favorable for the flow transition and which also continues in addition to the permanent magnet 31, is formed by the large areas which are opposed by the yoke plates 29 and 30 on the one hand and by the flow plate 32 on the other hand. Due to the size of the overlap of the yoke plates 29 and 30 and the flux plate 32 on the one hand and the distance which is determined by the thickness of the permanent magnet, this air gap 33 can be set so that the desired permanent magnetic force is available on the one hand and a high sensitivity on the other hand of the magnet system is achieved, ie a low excitation power is required.
  • the armature is fastened in a carrier 34 which is mounted in bearing bushes 36 by means of molded-on bearing pins 35. These bearing bushes are each formed by two resilient holding arms 37 which are molded onto the coil flange 20.
  • the armature is thus held in a bearing in a defined manner via the carrier 34, so that the armature end 21 has a precisely defined air gap with respect to the flow plate leg 32a.
  • This air gap 38 can be kept very small and very constant, since the armature end 21b only covers a very short distance during the switching movement, so that even when the flux plate leg 32a is in direct contact, only a small amount of friction occurs.
  • the carrier 34 also contains a center contact spring 39 on both sides, which are rigidly connected to the armature via the carrier and participate in its switching movements without the need for a separate contact slide.
  • the free end 39a of these center contact springs alternately makes contact with one of the mating contact elements 40 or 41.
  • the center contact springs 39 are each connected to a connecting pin 43 via a wire 42.
  • the mating contact elements 40 and 41 are each anchored directly in the base body 11.
  • the two yoke plates 29 and 30 are pushed onto the coil body 17 in such a way that the pole shoes 22 and 23 are positioned between the contact surfaces 25 and 26 on the one hand and the lugs 27 and 28 on the other hand.
  • the yoke plates 29 and 30 rest on shoulders 44 and 45 of the coil flanges 19 and 20, respectively. They are fixed together with the permanent magnet 31 and the flux plate 32 by two pins 46 and 47, which are molded onto the thermoplastic coil body 17. These pins 46 and 47 are inserted through recesses 48 and 49 of the flow plate 31 and deformed over the flow plate into rivet heads 46a and 47a.
  • the characteristic of the relay is then set by applying external magnetic fields.
  • the two permanent magnet regions 31 and 31b can be magnetized and adjusted by applying pole pieces to the flux plate 32 or to the cap 12 above the flux plate 32 so that different response values for both armature positions and, depending on the choice, a monostable or a bistable switching behavior are generated .
  • a relay is obtained in which the same construction parts can be used for different designs and in which the entire assembly can be carried out independently of the subsequent relay characteristic.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Magnetic Treatment Devices (AREA)
  • Valve Device For Special Equipments (AREA)
  • Developing Agents For Electrophotography (AREA)

Claims (16)

1. Relais électromagnétique polarisé comportant une armature (5, 21) en forme de barreau, qui est disposée à l'intérieur du corps de bobine (17) approximativement suivant l'axe de la bobine et est supportée, d'un côté, au voisinage d'une extrémité de cette dernière, et pénètre, par son extrémité libre au voisinage de l'autre extrémité libre de la bobine, dans l'espace situé entre deux pièces polaires (2a, 3a; 22, 23) disposées réciproquement en vis-à-vis et coudées à partir de tôles du culasse (2, 3; 29, 30), ces tôles du culasse - qui sont disposées côte-à-côte sur une surface étendue dans un plan - étant accouplées magnétiquement à deux pôles ayant des polarités contraires d'un dispositif d'aimant permanent (1; 31) à quatre pôles, tandis que les deux pôles du dispositif d'aimant permanent (1; 31), qui sont tournés à l'opposé des tôles de culasse (2, 3; 29, 30), sont accouplés magnétiquement entre eux par l'intermédiaire d'une tôle de guidage de flux (4; 32), qui s'étend entre les deux extrémité du relais parallèlement à l'axe de la bobine et à côté de l'enroulement (7,18) de la bobine, et à l'extrémité soutenue de l'armature (5, 21), caractérisé par le fait que les parties de surface étendue des deux tôles de culasse (2, 3; 29, 30) s'étendent pareillement parallèlement à l'axe de la bobine et en outre parallèlement à la tôle de guidage de flux (4, 32) à côté de l'enroulement (7; 18) de la bobine, et que les pôles de culasse (2, 3; 29, 30) et la tôle de guidage du flux (4; 32) délimitent une zone de recouvrement (9; 33) dans laquelle le dispositif d'aimant permanent (1; 31) est disposé, avec des directions de polarisation sensiblement perpendiculaires à l'axe de la bobine.
2. Relais suivant la revendication 1, caractérisé par le fait que les deux pièces polaires (2a, 3a; 22, 23) sont formées par façonnage sur les faces, tournées vers l'axe de la bobine, des tôles de culasse (2, 3; 29, 30) et sont recourbées, sur la face frontale du corps de bobine (17), en direction de l'extrémité libre (5a, 21a) de l'armature, parallèlement à la face plane de l'armature (21).
3. Relais suivant la revendication 1 ou 2, caractérisé par le fait que la zone de superposition (9; 33) des tôles de culasse (2,3; 29,30) et de la plaque de guidage du flux (4; 32) s'étend sensiblement sur toute la longueur de la bobine.
4. Relais suivant l'une des revendications 1 à 3, caractérisé par le fait que le dispositif d'aimant permanent (1; 31) est réalisé d'un seul tenant.
5. Relais suivant l'une des revendications 1 à 4, caractérisé par le fait que la longueur du dispositif d'aimant permanent (1; 31) suivant une direction parallèle à l'axe de la bobine est égale à un multiple de son épaisseur suivant la direction de magnétisation.
6. Relais suivant l'une des revendications 1 à 5, caractérisé par le fait que le dispositif d'aimant permanent (1; 31) ne remplit qu'une partie de la zone de superposition (9; 33) et qu'à côté se trouve formé un entrefer supplémentaire (9, 91; 33) entre les tôles de culasse (2, 3; 29, 30) et la tôle de guidage du flux (4; 32).
7. Relais suivant la revendication 6, caractérisé par le fait que l'entrefer supplémentaire (9a) est formé entre les tôles de culasse (2, 3) et la tôle de guidage du flux (4) par les languettes (3b) formées par façonnage au niveau de ces éléments.
8. Relais suivant la revendication 6 ou 7, caractérisé par le fait que la partie (4a; 32a), accouplée magnétiquement à l'armature (5, 21), de la tôle de guidage de flux (4; 32) forme avec l'extrémité (5b; 21b) de l'armature un entrefer (8; 38) qui est nettement inférieur à l'entrefer (9; 33) existant entre les tôles de culasse (2, 3; 29, 30) et la tôle de guidage du flux (4; 32).
9. Relais suivant l'une des revendications 1 à 8, caractérisé par le fait que la tôle de guidage du flux est appliquée directement ou indirectement contre l'extrémité (21 b) de support de l'armature (21) et maintient cette dernière dans son support.
10. Relais suivant l'une des revendications 1 à 9, caractérisé par le fait que les tôles de culasse (2, 3; 29, 30) sont disposées respectivement entre le dispositif d'aimant permanent (1; 31) et l'enroulement (7; 18) de la bobine.
11. Relais suivant la revendication 10, caractérisé par le fait que les tôles de culasse (29, 30) sont en appui sur les flasques (19, 20) de la bobine et sont maintenues par des tétons (46, 47) réalisés par façonnage sur le corps de bobine (17).
12. Relais suivant la revendication 11, caractérisé par le fait que les tétons (46, 47) réalisés par façonnage sur le fasque de bobine sont rivetés dans des perçages (48, 49) de la tôle de guidage du flux (32).
13. Relais suivant t'une des revendications 1 à 12, caractérisé par le fait que les pièces polaires (22, 23) sont maintenues à un écartement prédéterminé par des surfaces d'appui (25, 26) du corps de bobine (17) et sont repoussés par des ergots (27, 28), réalisés par façonnage sur le flasque (19) de la bobine, contre les surfaces d'appui (25, 26).
14. Relais suivant l'une des revendications 1 à 13, caractérisé par le fait que les tôles de culasse (29, 30) disposées au-dessus de la bobine (18) sont d'une largeur supérieure au diamètre de la bobine et que des organes de contact (39, 40, 41), pouvant être actionnés par l'armature (21) sont disposés des deux côtés de la bobine, dans l'espace recouvert par les tôles de culasse (29, 30).
15. Relais suivant la revendication 14, caractérisé par le fait que la bobine (17, 18) est portée par un corps de base (11) en matériau isolant, qui possède un évidement central (16) servant à loger le corps (17) de la bobine, d'une manière adaptée de façon précise, et dans lequel des raccords de contact (40, 41, 43) sont ancrés des deux côtés dudit corps.
16. Relais suivant la revendication 15, caractérisé par le fait qu'un capot de protection (12) en matériau isolant est emmanché par-dessus le corps de bobine et forme avec le corps de base (11 un joint pouvant être étanchéifié.
EP82107303A 1981-08-14 1982-08-11 Relais électromagnétique polarisé Expired EP0072976B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82107303T ATE14491T1 (de) 1981-08-14 1982-08-11 Polarisiertes elektromagnetisches relais.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3132244 1981-08-14
DE3132244A DE3132244C2 (de) 1981-08-14 1981-08-14 Polarisiertes elektromagnetisches Relais

Publications (2)

Publication Number Publication Date
EP0072976A1 EP0072976A1 (fr) 1983-03-02
EP0072976B1 true EP0072976B1 (fr) 1985-07-24

Family

ID=6139367

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82107303A Expired EP0072976B1 (fr) 1981-08-14 1982-08-11 Relais électromagnétique polarisé

Country Status (5)

Country Link
US (1) US4509025A (fr)
EP (1) EP0072976B1 (fr)
JP (1) JPS5838433A (fr)
AT (1) ATE14491T1 (fr)
DE (2) DE3132244C2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3225777C2 (de) * 1982-07-09 1984-05-10 Siemens AG, 1000 Berlin und 8000 München Polarisiertes Relais
DE3311308C1 (de) * 1983-03-28 1984-10-25 Siemens AG, 1000 Berlin und 8000 München Kontaktanordnung für ein Relais
DE3347602A1 (de) * 1983-12-30 1985-07-11 Siemens AG, 1000 Berlin und 8000 München Polarisiertes elektromagnetisches relais
DE3424464A1 (de) * 1984-07-03 1986-01-16 Siemens AG, 1000 Berlin und 8000 München Polarisiertes elektromagnetisches miniaturrelais
ATE53703T1 (de) * 1985-02-12 1990-06-15 Siemens Ag Elektromagnetisches relais.
US8193881B2 (en) * 2007-09-14 2012-06-05 Fujitsu Component Limited Relay
JP5560058B2 (ja) * 2010-01-26 2014-07-23 富士通コンポーネント株式会社 電磁継電器
CN103236376B (zh) * 2013-03-29 2015-06-17 厦门宏发电力电器有限公司 一种非对称螺线管式结构的磁保持继电器

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1220521B (de) * 1962-10-25 1966-07-07 Arthur Klemt Polarisiertes Relais
US3673529A (en) * 1971-05-13 1972-06-27 Babcock Electronics Corp Magnetic actuator
JPS4828119U (fr) 1971-08-04 1973-04-05
US3717829A (en) * 1971-08-27 1973-02-20 Allied Control Co Electromagnetic relay
DE2625203C3 (de) * 1976-06-04 1984-05-24 Hans 8024 Deisenhofen Sauer Polarisiertes elektromagnetisches Kleinrelais
DE2723220C2 (de) * 1977-05-23 1979-08-02 Siemens Ag, 1000 Berlin Und 8000 Muenchen Polarisiertes elektromagnetisches Miniaturrelais
DE2910224A1 (de) * 1979-03-13 1980-10-09 Elmeg Monostabiles kleinrelais
JPS567411A (en) 1979-06-30 1981-01-26 Matsushita Electric Works Ltd Polarized electromagnet device
JPS5615522A (en) * 1979-07-18 1981-02-14 Matsushita Electric Works Ltd Electromagnetic relay
DE3006948A1 (de) * 1980-02-25 1981-09-10 Siemens AG, 1000 Berlin und 8000 München Polarisiertes magnetsystem
JPS56145626A (en) * 1980-04-11 1981-11-12 Matsushita Electric Works Ltd Solenoid relay

Also Published As

Publication number Publication date
JPS6355176B2 (fr) 1988-11-01
ATE14491T1 (de) 1985-08-15
DE3132244C2 (de) 1983-05-19
US4509025A (en) 1985-04-02
EP0072976A1 (fr) 1983-03-02
JPS5838433A (ja) 1983-03-05
DE3264911D1 (en) 1985-08-29
DE3132244A1 (de) 1983-03-03

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