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EP0073002B1 - Déclencheur électromagnétique - Google Patents

Déclencheur électromagnétique Download PDF

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Publication number
EP0073002B1
EP0073002B1 EP82107474A EP82107474A EP0073002B1 EP 0073002 B1 EP0073002 B1 EP 0073002B1 EP 82107474 A EP82107474 A EP 82107474A EP 82107474 A EP82107474 A EP 82107474A EP 0073002 B1 EP0073002 B1 EP 0073002B1
Authority
EP
European Patent Office
Prior art keywords
coil
armature
magnet
arms
limb
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
EP82107474A
Other languages
German (de)
English (en)
Other versions
EP0073002A1 (fr
Inventor
Herbert Ing. Grad. Ebel
Fritz Dipl.-Ing. Heine
Erhard Ing. Grad. Runtsch
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.)
BBC Brown Boveri AG Germany
Original Assignee
Brown Boveri und Cie AG Germany
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 Brown Boveri und Cie AG Germany filed Critical Brown Boveri und Cie AG Germany
Priority to AT82107474T priority Critical patent/ATE15732T1/de
Publication of EP0073002A1 publication Critical patent/EP0073002A1/fr
Application granted granted Critical
Publication of EP0073002B1 publication Critical patent/EP0073002B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • H01H71/321—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements
    • H01H71/323—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements with rotatable armature

Definitions

  • the invention relates to a controllable by means of a coil blocking magnet trigger according to the preamble of claim 1, the z. B. is known from DEA2116473.
  • Such blocking magnet triggers can be used in particular in the case of residual current protective shoulders.
  • a controllable magnetic circuit has become known (DE-C-949502) which can be used as a blocking magnet release and which has two iron bodies arranged next to one another, each of which has a window through which a coil can be wound.
  • FIGS. 1 and 2 of the drawing in which the prior art is shown.
  • each blocking magnet trigger has at least two yoke parts (yoke plates) which have to be kept at a distance and connected by further, non-magnetic parts.
  • Triggers that are called and act as so-called counter magnetization triggers and not as a blocking magnet triggers have become known, for example, from FR-A-1 337 305 or DE-A-24 30 288. These generally have a U-shaped magnet yoke, the leg ends of which are covered by a magnet armature, a permanent magnet being arranged on one of the legs or the transverse web, and the coil being arranged on the other leg.
  • the disadvantage of the known counter magnetization triggers is essentially that they only trigger in one current direction, therefore they have a longer response time and unequal sensitivity in both pulse current directions of a primary current in a converter to which the trigger is connected with a secondary winding.
  • the object of the invention is therefore to provide a blocking magnet release of the type mentioned, which is simple in comparison to the known blocking magnet releases and has higher sensitivity.
  • a blocking magnet release is thus formed which has such a simple shape as was previously only possible with counter-magnetization releases, namely as a yoke only contains a one-piece part with two legs, which has all the contact surfaces for the armature.
  • a magnetic release which is approximately U-shaped and one leg of which has two webs, has become known from DE-A-2 830 438.
  • this release does not act as a blocking magnet release because the magnet armature, which is attracted against the leg against the force of a spring, does not cover the entire yoke, but only the area or the web on which the coil is wound, whereas the other web serves as a shunt. This does not form a blocking magnet release.
  • At least one window is provided in one of the leg parts, through which two webs are formed which run transversely to the pole face of the leg part and around which a coil is wound.
  • a further embodiment can be that two windows are provided in one of the leg parts, which are separated by a window web running parallel to the pole face, around which a coil is wound.
  • This window web can lie according to the characterizing feature of claim 4 in the area of the junction between the leg part and the cross bar if one window is arranged in one leg part and the other window in the cross bar connecting the leg parts of the U-shaped yoke.
  • one leg part can be slotted; this means that one coil can be applied to each of the webs thus created, which enables the plugging of prefabricated coils and therefore considerably simplifies production.
  • This version also allows the use of coils with a large number of turns of thin wire, so that blocking magnet releases with high impedance can be produced. It is essential for the correct functioning that the triggering (tearing off the armature) takes place by weakening the overall flow. Accordingly, the durability on the armature is generated at the pole point that carries the total flux, while the two webs, which can carry a different magnetic flux, only serve as bearing points. Decreases in a partial flow do not lead to tripping afterwards. In this respect, the advantages of the blocking magnet principle are realized in this embodiment of the invention. A corresponding arrangement of the force component (spring) on the armature is required to implement this embodiment of the invention.
  • FIG. 1 shows a blocking magnet release according to the invention.
  • This has a yoke 1 which is U-shaped with two legs 5 and 9. On one leg 9, namely on its outside, there is a permanent magnet 3; In the other leg 5, a window 4 is introduced, so that two webs 1a and 1b are formed, around which a coil 6a and 6b is wound.
  • the window is delimited at the top by means of a cross piece 7 on which a pole face 7a is formed.
  • the pole face 7a and the free end face of the leg 9 is covered by an anchor 8; the armature 8 is rotatably supported on the end face of the leg 9 and it is acted upon by a spring 2 in the clockwise direction (arrow direction U).
  • the arrangement according to FIG. 2 again has a yoke 1 which is U-shaped with two legs 9 and 5.
  • the leg 5 has a window, but which is open towards the anchor 8.
  • two webs 1a and 1b are formed, around which the coils 6a and 6b are wound.
  • the armature 8 rotates around the free leg end of the web 1 a, counterclockwise due to the force of the spring 2 in the direction of the arrow U1.
  • the individual elements of the two configurations according to FIGS. 1 and 2 are different; however, since the individual components have the same effect, the same reference numbers are used. This also applies to the embodiment according to FIG. 3. It can be seen in FIG.
  • the leg 5 has two windows 4a and 4b lying one above the other, as a result of which a total of four webs 1a, 1b, 1c and 1d and a window web 1e are formed.
  • the coil 6 is wound around this window web 1e.
  • the arrangement according to FIG. 3 is similar to that according to FIG. 1.
  • the permanent magnet 3 generates a magnetic flux in the same direction in the webs 1a to 1d.
  • the coil 6 generates two control flows which each run in the opposite direction through the webs 1a, 1b and 1c, 1d. Assuming that the main flux generated by the permanent magnet 3 runs in the direction from the north pole to the south pole, then the magnetic flux in the webs 1a and 1d increases, whereas the magnetic flux in the webs 1b and 1c decreases. As a result, the webs 1a and 1d become saturated, so that the attraction force on the armature 8 is reduced.
  • the blocking magnet release according to FIG. 4 has a U-shaped yoke 10 with two legs 12 and 14 which are connected to one another by means of a cross piece 16.
  • a permanent magnet 18 is attached to the outside of the leg 14.
  • the spring holder 20 has an extension 22 which runs parallel to the transverse web 16 and in which a recess 24 is arranged, through which a hook-shaped end 26 of a tension spring (spring 28) extends.
  • the two legs 12 and 14 end in pole faces 30 and 32, over which an armature 34 is placed, which continues beyond the leg 14 into an extension 36, in which a recess 38 is made, into which the hook-shaped other end 40 the spring 28 is suspended.
  • the spring holder 20 is fork-shaped in its upper region, two fork ends 42 and 44 being formed, between which the extension 36 engages and is guided.
  • the armature 34 has one towards the other Leg-projecting taper 46, which rests on the pole face 30 of the leg 12.
  • the leg 12 has a window 48, so that two webs 50 and 52 are formed, around which a coil 54 and 56 is wound.
  • the webs 50 and 52 are thus constrictions which correspond to the constrictions (webs 1a and 1b) in FIG. 1.
  • Grooves 62 and 64 can further reduce the cross section of these narrow points (FIG. 7).
  • a magnetic flux is generated in the yoke 10 by the permanent magnet 18 and is divided into the two magnetic fluxes by the webs 50 and 52. Due to the flooding generated by the coils z. B. the magnetic flux in the web 52 is increased and decreased in the web 50.
  • FIGS. 8 and 9 A further embodiment of a yoke is shown in FIGS. 8 and 9.
  • the yoke which has the reference numeral 70, is in principle U-shaped with a cross piece 72 and a leg 74, on the outer surface of which, similarly to the leg 14 of the blocking magnet release according to FIG. 4, a permanent magnet is attached (not shown).
  • the other leg 76 is arranged obliquely with respect to the orientation of the leg 74, so that it encloses an angle with the leg 74. Otherwise, the shape is similar to that of the yoke 10 according to FIG. 4. This creates a larger space for the coils.
  • FIG. 10 shows a representation of the direction of winding for the two coils 54 and 56.
  • the coil wire 80 is first inserted into the interior of the window 48 between the two webs 50 and 52, looped around the web 52 several times in the direction of the arrow P, specifically in the opposite direction clockwise.
  • the wire is then threaded into the window 48 and also wrapped several times around the web 50 in the clockwise direction in the direction of the arrow P1.
  • the number of turns is determined by the desired sensitivity.
  • the blocking magnet release has a U-shaped yoke 90 with two legs 92 and 94 and a cross bar 96 connecting both legs; the leg 94 corresponds to the leg 14 in FIG. 4 and accordingly the permanent magnet 18, the spring 28, the spring holder 20 and the support of the armature 34 are also arranged there.
  • the other leg 92 has two windows 100 and 102 which are separated from one another by a window web 98 which runs parallel to the pole face and through which a coil 104 is threaded so as to surround the window web 98.
  • the window web 106 can also be arranged at the junction between the leg 92 and the cross web 96, such that one window 108 in the cross web 96 and the other window 110 lie in the leg 92 ( Figure 13).
  • the blocking magnet release has a U-shaped yoke 120 with a leg 122, on the outside of which a permanent magnet 123 is arranged.
  • the yoke 120 On the side opposite the leg 122, the yoke 120 has two webs 124 and 126, so that a space 128 is formed between the two.
  • a coil 130 and 132 is arranged around each of the two webs 124 and 126. With their pole faces, the two webs 124 and 126 form bearing points 134 and 136 for the armature 138, which is under the action of a spring 140 which acts on an extension 142 projecting beyond the two webs 124 and 126.
  • the permanent magnet 123 generates a magnetic flux in the yoke 120, which holds the armature against the pole surface 144 of the leg 122 against the action of the spring 140. If a magnetic flux is generated due to a current flow through the coils 130 and 132, then the pulling force at the pole face 144 on the armature 138 becomes smaller than the pulling force of the spring 140, so that the armature in the arrow direction G around the bearing points 134 and 136 the ends of the two webs 124 and 126 folds.
  • FIGS. 17 to 19 The basic structure of the arrangement is the same as that shown in FIGS. 14 to 16; only the geometric arrangement has been changed.
  • the two webs 124 and 126 which carry the two coils, are pulled apart widely and the yoke 120 is shortened as much as possible, the armature being adapted accordingly. This allows larger coils to be accommodated, so that the sensitivity of the trigger can be increased.
  • the yoke can also have the shape of a V.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Magnetic Treatment Devices (AREA)

Claims (6)

1. Déclencheur à aimant de blocage pouvant être commandé au moyen d'une bobine et comportant un aimant permanent (3 ; 18 ; 123) pour engendrer un flux magnétique passant par les branches d'une culasse (1 ; 10 ; 70 ; 90 ; 120) et par un induit (8 ; 34 ; 138),. ce qui fait que l'induit est attiré vers les branches à l'encontre de la force d'un ressort (2 ; 28 ; 140), une branche étant subdivisée en au moins deux membrures (1a, 1b; 1c, 1d ; 50, 52 ; 124, 126) et au moins une bobine respective (6 ; 6a, 6b ; 54, 56 ; 104 ; 130, 132) étant enroulée, autour d'au moins une membrure, de telle sorte que des circulations opposées s'établissent dans les membrures lors de l'excitation de la bobine, si bien que, par l'intermédiaire de l'induit, il se produit une diminution de flux dans chaque sens de circulation par saturation magnétique d'une membrure, caractérisé par le fait que la culasse (1 ; 10 ; 70 ; 90, 120) et ses branches sont réalisées à partir d'une pièce configurée en U ou en V, sur laquelle l'aimant permanent (3 ; 18 ; 123) est disposé.
2. Déclencheur à aimant de blocage selon la revendication 1, caractérisé par le fait qu'au moins une fenêtre (4 ; 48) est pratiquée dans l'une des branches, ce qui donne naissance à deux membrures (1a, 1b ; 50, 52) s'étendant perpendiculairement à la surface polaire (7a ; 30) de la branche, et tout autour desquelles une bobine respective (6a, 6b ; 54, 56) est enroulée.
3. Déclencheur à aimant de blocage selon la revendication 1, caractérisé par le fait que, dans l'une des branches, sont pratiquées deux fenêtres (4a, 4b ; 100, 102) qui sont séparées par une barrette (le ; 98) s'étendant parallèlement à la surface polaire, et tout autour de laquelle une bobine (6 ; 104) est enroulée.
4. Déclencheur à aimant de blocage selon la revendication 3, caractérisé par le fait qu'une fenêtre (110) est ménagée dans une branche (92) et l'autre fenêtre (108) est pratiquée dans la membrure transversale (96) raccordant les branches de la culasse (90) configurée en U.
5. Déclencheur à aimant de blocage selon la revendication 1, caractérisé par le fait qu'une branche (122) est fendue de façon à former deux membrures (124, 126) sur lesquelles une bobine respective (130, 132) est enroulée ; et par le fait que les extrémités des membrures servent de zones (134, 136) de montage de l'induit (138).
6. Déclencheur à aimant de blocage selon l'une des revendications précédentes, caractérisé par le fait que les membrures (50, 52) possèdent au moins un rétrécissement (gorges 62, 64) dans la région située à l'intérieur de la bobine.
EP82107474A 1981-08-21 1982-08-17 Déclencheur électromagnétique Expired EP0073002B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82107474T ATE15732T1 (de) 1981-08-21 1982-08-17 Sperrmagnetausloeser.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3133126 1981-08-21
DE3133126 1981-08-21

Publications (2)

Publication Number Publication Date
EP0073002A1 EP0073002A1 (fr) 1983-03-02
EP0073002B1 true EP0073002B1 (fr) 1985-09-18

Family

ID=6139813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82107474A Expired EP0073002B1 (fr) 1981-08-21 1982-08-17 Déclencheur électromagnétique

Country Status (3)

Country Link
EP (1) EP0073002B1 (fr)
AT (1) ATE15732T1 (fr)
DE (1) DE8124466U1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT378862B (de) * 1984-03-05 1985-10-10 Felten & Guilleaume Ag Oester Haltemagnetausloeser
WO1989001718A1 (fr) * 1987-08-14 1989-02-23 Weber Ag, Fabrik Elektrotechnischer Artikel Und Ap Dispositif de protection pour appareil electrique
AT389018B (de) * 1987-11-09 1989-10-10 Felten & Guilleaume Ag Oester Haltemagnetausloeser
NL8900007A (nl) * 1989-01-03 1990-08-01 Holec Syst & Componenten Stuurinrichting voor een elektrische schakelaar, alsmede een met deze stuurinrichting uitgeruste elektrische schakelaar.
DE3915621A1 (de) * 1989-05-12 1990-11-15 Thomson Brandt Gmbh Videorecorder mit eingebautem texdecoder
GB8917283D0 (en) * 1989-07-28 1989-09-13 Federal Pioneer Ltd Miniature circuit breakers
CN112490092A (zh) * 2020-12-08 2021-03-12 浙江欣成电气有限公司 漏电脱扣器
EP4661049A1 (fr) * 2024-06-04 2025-12-10 Hager-Electro Sas Déclencheur électromagnetique à haute sensibilite polarisé pour un appareillage électrique de protection et appareillage électrique de protection associé

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1261961B (de) * 1963-01-04 1968-02-29 Siemens Ag Sperrmagnetsystem
AT300952B (de) * 1970-04-08 1972-08-10 Norma Gmbh Haltemagnetsystem nach dem Sperrmagnetprinzip
DE2236682A1 (de) * 1972-07-26 1974-02-07 Baco Const Elect Magnetsystem fuer hochempfindliche polarisierte elektromagnetische relais
DE2951900A1 (de) * 1979-12-21 1981-07-02 Brown, Boveri & Cie Ag, 6800 Mannheim Ausloeser fuer fehlerstromschutzschalter
DE2951899A1 (de) * 1979-12-21 1981-07-02 Brown, Boveri & Cie Ag, 6800 Mannheim Ausloeser fuer einen fehlerstromschutzschalter

Also Published As

Publication number Publication date
ATE15732T1 (de) 1985-10-15
DE8124466U1 (de) 1983-01-27
EP0073002A1 (fr) 1983-03-02

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