EP0154619A2 - Déclencheur à aimant de maintien - Google Patents

Déclencheur à aimant de maintien Download PDF

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Publication number
EP0154619A2
EP0154619A2 EP85890051A EP85890051A EP0154619A2 EP 0154619 A2 EP0154619 A2 EP 0154619A2 EP 85890051 A EP85890051 A EP 85890051A EP 85890051 A EP85890051 A EP 85890051A EP 0154619 A2 EP0154619 A2 EP 0154619A2
Authority
EP
European Patent Office
Prior art keywords
leg
yoke body
armature
holding
permanent magnet
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.)
Withdrawn
Application number
EP85890051A
Other languages
German (de)
English (en)
Other versions
EP0154619A3 (fr
Inventor
Gerhard Amon
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.)
Felten & Guilleaume Fabrik Elektrischer Apparate AG Schrems-Eugenia Niederosterreich
Felten and Guilleaume Austria AG
Original Assignee
Felten & Guilleaume Fabrik Elektrischer Apparate AG Schrems-Eugenia Niederosterreich
Felten and Guilleaume Austria AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Felten & Guilleaume Fabrik Elektrischer Apparate AG Schrems-Eugenia Niederosterreich, Felten and Guilleaume Austria AG filed Critical Felten & Guilleaume Fabrik Elektrischer Apparate AG Schrems-Eugenia Niederosterreich
Publication of EP0154619A2 publication Critical patent/EP0154619A2/fr
Publication of EP0154619A3 publication Critical patent/EP0154619A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H01H2071/0242—Assembling parts of a circuit breaker by using snap mounting techniques
    • 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
    • H01H2071/328—Electromagnetic mechanisms having permanently magnetised part using a spring for having minimal force on armature while maximal force on trip pin

Definitions

  • the invention relates to a holding magnet release, in particular for residual current circuit breakers, with a yoke body housed in a housing, which has a substantially U-shaped shape and whose leg ends are designed as pole shoes, with a coil winding on one leg of the yoke body and a permanent magnet on the other leg of the yoke body is preferably rotatably arranged, and a spring-loaded, pivotable armature, which bridges the free ends of the legs of the yoke body in its closed position, and is pivotably mounted about an axis lying in the region of the end of the leg of the yoke body to which the permanent magnet is assigned is.
  • Such holding magnet triggers are used in electrical switching devices, for. B.
  • residual current circuit breakers are used in which switching operations are controlled with very low electrical power.
  • the armature is held in the tightened state by the force of a magnetic holding flux.
  • This holding flux is generated by the permanent magnet, which is arranged in the immediate vicinity of the magnetic circuit.
  • the control flow acting as a counter flow is generated by the coil winding which is arranged on one of the pole shoes of the yoke body. As soon as the counter flow has weakened the holding flow sufficiently, the holding force of the armature is released, so that it drops and thus triggers a switching process.
  • a holding magnet release of the type mentioned is known from DE-A 25 29 221.
  • the spring assigned to the armature runs essentially perpendicular to the armature. This has the consequence that not inconsiderable holding forces must be applied when the armature is tightened, since the spring must be sufficiently strong so that the plunger of the holding magnet release is actuated with the force which is sufficiently large for triggering switching operations in the event of a release. All of this has the consequence that the known holding magnet release can only be miniaturized to a limited extent.
  • the invention has for its object to provide a magnetic release of the type mentioned _ _ which is designed so that it can be controlled reliably by a small electrical power (order of magnitude: 200 uVA) and still exerts a sufficiently large force to the switching process in the electrical Trigger switchgear, for example in the residual current circuit breaker.
  • this object is achieved with a holding magnet release, which is characterized in that the spring on the armature engages on a tongue pointing away from the web of the yoke body and that the spring engaging on the armature forms an acute angle with the armature and on the housing is attached at a point which in the area of a plane passing through the end faces of the ends of the legs of the yoke body on the web of the yoke body reverse side of this level is arranged.
  • the holding magnet release according to the invention not only the above-mentioned tasks are reliably solved, but the holding magnet release according to the invention has a comparatively simple structure and can be made so small without difficulty that it can be easily accommodated in the housing of residual current circuit breakers.
  • the distance between the force acting on the armature and the spring force is the axis of rotation of the armature increases when the armature drops. This means that the distance when the armature is tightened and thus also the moment acting on the armature is small, so that only small holding forces are required. Due to the increase in the distance between the force axis and the axis of rotation, the decreasing spring force is at least compensated for when the armature falls off, so that the armature reliably applies the force required to trigger further switching operations under the action of the spring acting on it.
  • a particularly favorable spatial arrangement results when the bearing end of the armature as well as the end of the leg of the yoke body on which the Bearing end of the armature is supported, are substantially fork-shaped.
  • This embodiment also allows the distance between the axis of rotation of the bearing and the spring force acting on the armature to be kept particularly small when the armature is tightened.
  • the tongue on the anchor can be provided in the area lying between the legs of the yoke body. This measure makes the dimension of the holding magnet release smaller in the direction of the spring or the armature.
  • the bearing plate and the permanent magnet are connected to one leg of the yoke body by a rivet.
  • the joint with the end of the leg is the bearing for the anchor forming end of the bearing plate only under the action of the spring force of the bearing plate on the leg of the yoke body.
  • the bearing plate must therefore be dimensioned accordingly strong.
  • the attachment of the rivet is difficult, particularly in the case of small holding magnet triggers, and does not permit adjustment of the holding magnet trigger by rotating the permanent magnet.
  • DE-A 19 00 623 describes an annular permanent magnet held in an annular cavity of a carrier by means of springs and clamping screws.
  • a claw ring is known, which is intended for holding components in a hole in a carrier, the claws being pressed against the component to be held by the hole wall.
  • the invention is further based on the object of specifying a holding magnet release which is of simple construction and which ensures that the armature is supported as smoothly as possible, even in the case of a miniaturized construction, and in which the bearing plate simultaneously serves as a holder for the permanent magnet.
  • this object is achieved with a holding magnet release, in which the bearing end of the pivotable armature is designed as a cutting edge, which extends in the angular range between the end face of the end of the leg of the yoke body that carries the permanent magnet and a bearing plate connected to this leg, which protrudes beyond the leg , is achieved in that the bearing plate is fixed on the leg of the yoke body by holding claws resting on the inner surface of the leg and that at least three of these are on the outside of the bearing plate upright, sharp-edged tongues are provided, which resiliently resiliently bear against the outer surface of the cylindrical permanent magnet, for example, form a holder for the permanent magnet.
  • the holding magnet release according to the invention not only the above-mentioned object is reliably achieved, but the holding magnet release according to the invention has a comparatively simple structure and can be made so small without difficulty that it can be easily accommodated in the housings of residual current circuit breakers.
  • the assembly of the holding magnet release according to the invention is simple, since it is sufficient to press the bearing plate from the outside against the leg of the yoke body until the holding claws rest on the inside of the leg. Other activities for fastening the permanent magnet can be omitted, since this is held by tongues of the bearing plate. Since the tongues rest resiliently on the permanent magnet, there is a holder for the permanent magnet, which allows the latter to be rotated for the purpose of adjustment.
  • the mounting of the bearing plate by the aforementioned snap-on is particularly easy if the retaining claws have end regions which are essentially semicircularly curved and whose free ends rest on the inner surface of the leg under prestress. The fact that the free ends of the claws rest under pretension results in a particularly secure hold of the bearing plate.
  • the seat of the bearing plate, especially in the area of Bearing for the anchor can be improved according to the invention in that the bearing plate on the leg has claws resting in the area of its web-side as well as its free end.
  • a holding magnet release is housed in a housing 1 consisting of a lower part and a cover, not shown.
  • the housing 1 has a tongue 2 integrally formed on it, by means of which the holding magnet release can be fastened, for example, in a residual current circuit breaker.
  • a yoke body 3 is arranged in the housing 1, the web 4 of which is inserted in a clamping manner between supports 5 fixed to the housing and a pin 6.
  • the legs 7 and 8 of the yoke body 3 are designed as pole shoes, with the leg 7 having a coil winding 9 with a coil body 10 and the leg 8 with a permanent magnet 11.
  • the lines 12 to the coil winding 9 are led to the outside through an opening 13 in the housing 1.
  • the holding magnet release also has a pivotable armature 14, which in its drawn position shown in FIG. 1 in solid lines, the free ends 15 and 16 of the legs 7 and 8 of the Yoke body 3 bridges.
  • a tension spring 18 engages, the other end of which is suspended by a pin 19 fixed to the housing.
  • the tension spring 18 loads the armature 14 in the sense of pivoting into the dropped position shown in dotted lines in FIG. 1.
  • a transmitter 20 designed as a plunger, which can be displaced in a guide formed in a wall of the housing 1, outwards into the position shown in dotted lines in FIG. 1, as a result of which further switching operations can be triggered .
  • FIG. 2 The mounting of the armature 14 is shown in greater detail in FIG. 2.
  • a bearing plate 22 is attached to the leg 8 of the yoke body 3. In order to fasten the bearing plate 22 to the leg 8, it has holding claws 23 resting on the inner surface of the leg 8 under elastic prestress with end regions which are essentially semicircularly curved.
  • a total of four retaining claws 23 are provided, two of which are arranged in the area of the web 4 and two more in the area of the end 16 of the leg 8.
  • the bearing plate 22 protrudes slightly beyond the free end 16 of the leg 8. At the angle between the end face of the free end 16 of the leg 8 and the protruding bearing plate 22, a bearing end 24 of the armature 14, which is designed as a cutting edge, is supported. The armature 14 can thus be pivoted about the axis 26 in the direction of the double arrow 25 (FIG. 2).
  • Figure. 2 shows that both the bearing end 24 of the armature 14 and the free end 16 of the leg 8 of the yoke body and the end of the bearing plate 22 facing the armature 14 are substantially fork-shaped forms in order to form space for the accommodation of the tension spring 18, which is only indicated schematically in FIG.
  • the designed as a pin 19 housing-fixed fastening point of the spring 18 is in the region of a plane defined by the ends 15, 16 of the legs 7 and 8 of the yoke body 3, on the side of this plane facing the web 4 of the yoke body 3 at a short distance from it .
  • the spring 18 forms an acute angle with the armature 14 in the tightened position (see FIG. 2). Due to this special orientation of the spring 18, not only does the advantageous change of the distance between the pivot axis 26 and the spring force exerted on the armature 14, but also the effect that the bearing end 24 is in the angular range between the end faces of the yoke body 8 and the protruding area of the bearing plate 22 is pulled. There are therefore no additional measures necessary to keep the armature 14 in its bearing, which means a further, considerable simplification of the structure of the holding magnet release according to the invention.
  • the bearing plate 22 connected to the leg 8 of the yoke body 3 simultaneously forms a holder for the permanent magnet 11.
  • tongues 27 are bent up out of the bearing plate 22, which, with their sharp-edged edges or corners, bend against the lateral surface of the generally cylindrical permanent magnet 11 put on and this against twisting as a result of shocks and. Secure the like.
  • a receiving space 28 for the permanent magnet 11 is formed in the housing 1, which is accessible through an opening 29 in the housing for adjusting the holding magnet release by rotating the permanent magnet 11.
  • In the recording Space 28 for the permanent magnet 11 is still an arched leaf spring 31 received between the bottom 30 of the receiving space 28 and the outwardly facing end surface of the permanent magnet 11, which forms an additional safeguard against unwanted rotation of the permanent magnet 11.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Dc Machiner (AREA)
EP85890051A 1984-03-05 1985-02-27 Déclencheur à aimant de maintien Withdrawn EP0154619A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT73984A AT378862B (de) 1984-03-05 1984-03-05 Haltemagnetausloeser
AT739/84 1984-03-05

Publications (2)

Publication Number Publication Date
EP0154619A2 true EP0154619A2 (fr) 1985-09-11
EP0154619A3 EP0154619A3 (fr) 1986-05-28

Family

ID=3498522

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85890051A Withdrawn EP0154619A3 (fr) 1984-03-05 1985-02-27 Déclencheur à aimant de maintien

Country Status (3)

Country Link
EP (1) EP0154619A3 (fr)
AT (1) AT378862B (fr)
ES (1) ES533514A0 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0228345A1 (fr) * 1985-12-13 1987-07-08 CMC Carl Maier + Cie AG Mécanisme de déclenchement magnétique pour disjoncteur à courant de défaut
FR2596577A1 (fr) * 1986-03-28 1987-10-02 Serd Soc Et Realisa Disjonct Declencheur polarise
DE3805562A1 (de) * 1987-11-03 1989-05-18 Serd Soc Et Realisa Disjonct Haltemagnetausloeser und verfahren zu seiner herstellung
EP0231732A3 (en) * 1985-12-02 1989-08-23 Felten & Guilleaume Fabrik Elektrischer Apparate Aktiengesellschaft Circuit breaker for fault and conduction current protection
AU604381B2 (en) * 1987-11-09 1990-12-13 Felten & Guilleaume Fabrik Elektrischer Apparate Aktiengesellschaft Holding magnet tripping device
EP0977234A3 (fr) * 1998-07-28 2000-11-15 ABBPATENT GmbH Dispositif de déclenchement pour un disjoncteur à courant de défaut et circuit de commande approprié
EP1324365A1 (fr) * 2001-12-20 2003-07-02 Siemens Aktiengesellschaft Déclencheur électromagnétique
CN108242372A (zh) * 2018-02-28 2018-07-03 首瑞（天津）电气设备有限公司 一种断路器的电磁脱扣触发机构和断路器

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1337305A (fr) * 1962-07-02 1963-09-13 Gardy Particip App Perfectionnement apporté aux relais électriques à très haute sensibilité et ses applications
DE2062885C3 (de) * 1970-12-21 1973-09-13 Felten & Guilleaume Schaltanlagen Gmbh, 4150 Krefeld Magnetsystem fur hochempfindlich einstellbare elektrische Haftrelais
DE2503159C3 (de) * 1975-01-27 1981-05-07 Siemens AG, 1000 Berlin und 8000 München Polarisiertes elektromagnetisches Relais und Verfahren zu dessen Herstellung
DE2529221C2 (de) * 1975-07-01 1983-12-15 Schupa-Elektro-GmbH + Co KG, 5885 Schalksmühle Hochempfindlicher, permanentmagnetischer Auslöser für Fehlerstromschutzschalter u.dgl.
DE7707671U1 (de) * 1977-03-12 1982-09-09 Felten & Guilleaume Energietechnik GmbH, 5000 Köln Hochempfindlich einstellbares elektrisches Haftrelais
DE8124466U1 (de) * 1981-08-21 1983-01-27 Brown, Boveri & Cie Ag, 6800 Mannheim Elektromagnetischer Auslöser

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0231732A3 (en) * 1985-12-02 1989-08-23 Felten & Guilleaume Fabrik Elektrischer Apparate Aktiengesellschaft Circuit breaker for fault and conduction current protection
EP0228345A1 (fr) * 1985-12-13 1987-07-08 CMC Carl Maier + Cie AG Mécanisme de déclenchement magnétique pour disjoncteur à courant de défaut
FR2596577A1 (fr) * 1986-03-28 1987-10-02 Serd Soc Et Realisa Disjonct Declencheur polarise
DE3805562A1 (de) * 1987-11-03 1989-05-18 Serd Soc Et Realisa Disjonct Haltemagnetausloeser und verfahren zu seiner herstellung
AU604381B2 (en) * 1987-11-09 1990-12-13 Felten & Guilleaume Fabrik Elektrischer Apparate Aktiengesellschaft Holding magnet tripping device
EP0977234A3 (fr) * 1998-07-28 2000-11-15 ABBPATENT GmbH Dispositif de déclenchement pour un disjoncteur à courant de défaut et circuit de commande approprié
EP1324365A1 (fr) * 2001-12-20 2003-07-02 Siemens Aktiengesellschaft Déclencheur électromagnétique
CN108242372A (zh) * 2018-02-28 2018-07-03 首瑞（天津）电气设备有限公司 一种断路器的电磁脱扣触发机构和断路器

Also Published As

Publication number Publication date
ES8600827A1 (es) 1985-10-16
ATA73984A (de) 1985-02-15
ES533514A0 (es) 1985-10-16
AT378862B (de) 1985-10-10
EP0154619A3 (fr) 1986-05-28

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Inventor name: AMON, GERHARD