EP1577920B1 - Déclencheur électromagnétique - Google Patents

Déclencheur électromagnétique Download PDF

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Publication number
EP1577920B1
EP1577920B1 EP05101874A EP05101874A EP1577920B1 EP 1577920 B1 EP1577920 B1 EP 1577920B1 EP 05101874 A EP05101874 A EP 05101874A EP 05101874 A EP05101874 A EP 05101874A EP 1577920 B1 EP1577920 B1 EP 1577920B1
Authority
EP
European Patent Office
Prior art keywords
permanent magnet
yoke
coil
limb
leg
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 - Fee Related
Application number
EP05101874A
Other languages
German (de)
English (en)
Other versions
EP1577920A1 (fr
Inventor
Stefan Seitz
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
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 Siemens AG filed Critical Siemens AG
Publication of EP1577920A1 publication Critical patent/EP1577920A1/fr
Application granted granted Critical
Publication of EP1577920B1 publication Critical patent/EP1577920B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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 trip relay with a soft magnetic yoke and a soft magnetic armature and a hard magnetic permanent magnet, wherein the yoke consists of a yoke leg, a coil leg and a bearing leg, and wherein the coil leg carries a trip coil and the armature tiltable about an axis of rotation arranged on the bearing axis is.
  • Such a trigger relay is for example by the DE 101 17 340 C1 as well as through the EP 1 324 365 A1 known.
  • each arranged within the soft magnetic yoke hard magnetic permanent magnet is aligned with its longitudinal axis parallel to the coil leg and the bearing leg of the yoke and secured to form a gap to the soft magnetic armature on the yoke leg.
  • the coil leg carries a trip coil which generates a magnetic field due to its current flow.
  • the magnetic field generated by the trip coil interacts with the field of the permanent magnet in a soft magnetic iron loop formed by the yoke and armature forming a magnetic field conducting element. If the magnetic field of the permanent magnet is weakened by the magnetic field generated by the trip coil, then the armature of a release spring, the armature is opened, thus causing it to trip.
  • Shunt films are used to set defined air gaps and defined distances to selectively influence the magnetic field generated by the permanent magnet.
  • the EP 1 177 565 B1 is z. B. in each case an electromagnetic relay, in which the designated core assembly yoke and / or the armature consists of a plastic containing soft magnetic particles (ferromagnetic powder).
  • the electrically conductive parts can optionally also be made of a plastic which contains an electrically conductive powder.
  • the document FR 2 276 679 discloses a relay according to the preamble of claim 1.
  • Object of the present invention is to provide a structurally simple design and easy to manufacture trip relay, are reliably avoided in the saturation problems in the yoke and / or in the anchor.
  • the trip relay according to claim 1 comprises a soft magnetic yoke and a soft magnetic armature and a hard magnetic permanent magnet, wherein the yoke consists of a yoke leg, a coil leg and a bearing leg, and wherein the coil leg carries a trip coil and the armature tiltable about an axis of rotation arranged on the bearing arm is.
  • the permanent magnet consists of a plastic material with hard magnetic particles and bears against the outside of the yoke leg.
  • the permanent magnet is made of a plastic-bonded magnetic material and the outside bears against the yoke leg, resulting in a large area distributed arrangement of hard magnetic permanent magnets.
  • the plastic-bonded permanent magnet can be formed magnetically weaker compared to the known permanent magnet. Due to the lower flux density in the permanent magnet at the same time distributed over a large area arrangement of the hard magnetic permanent magnet saturation problems in the soft magnetic yoke and the soft magnetic anchor are reliably avoided.
  • the soft magnetic yoke can thus be made smaller.
  • a construction with magnetic shunt and shunt foil is no longer necessary, since due to the large-area distribution of hard magnetic particles no special requirements for the positional tolerances of the permanent magnet must be made more. Due to the smaller size of the soft magnetic yoke, the size of the tripping relay according to the invention can be reduced. The no longer required shunt simplifies the production of the tripping relay according to the invention.
  • the permanent magnet is made of a plastic-bonded magnetic material and outside bears against the yoke leg, a variety of configurations are possible within the scope of the invention. So z. B. in an embodiment of the release relay according to claim 2, the permanent magnet, a base plate for the yoke.
  • the permanent magnet at least partially forms a housing for the release relay. If parts of the housing or the entire housing made directly from plastic with magnetizable (hard magnetic) particles, so eliminates the permanent magnet to be mounted in the release relay.
  • the housing constitutes the permanent magnet for generating the required magnetic field.
  • the housing in addition to its mechanical protective function, the housing also assumes the function of field generation.
  • the tripping coil-carrying bobbin in the housing, which at least partially forms the permanent magnet integrated.
  • the bobbin is included in the generation of the necessary magnetic field.
  • the permanent magnet is at least partially on at least one outer side of the yoke leg and at least partially on at least one outer side of the coil leg and at least one outer side of the bearing leg.
  • the embodiments described above show the great flexibility of the inventive measure to manufacture the permanent magnet of a plastic-bonded magnetic material.
  • the permanent magnet in particular during production by injection molding, can be adapted to the respective requirements in a production-technically simple manner.
  • the in the 1 to 3 Trip relays shown each have a soft magnetic yoke 1 and a soft magnetic Anchor 2 and a hard magnetic permanent magnet on.
  • the permanent magnet is according to the trip relay FIG. 1 designated at 31 and in the embodiment according to FIG. 2 with 32. At the in FIG. 3 In the embodiment shown, the permanent magnet has the reference numeral 33.
  • the yoke 1 in each case consists of a yoke leg 11, a coil leg 12 and a bearing leg 13.
  • the coil leg 12 carries a respective trigger coil 4th
  • the armature 2 is in each case tiltable about an axis of rotation 21 arranged between the latter and the bearing leg 13.
  • the permanent magnets 31, 32, 33 made of a plastic material with hard magnetic particles and are outside of the yoke leg 11 at.
  • each generates the trip coil 4 due to their current flow a magnetic field.
  • the magnetic field generated by the tripping coil 4 interacts with the field of the permanent magnets 31, 32 and 33, respectively, in a soft-magnetic iron circle formed by the yoke 1 and armature 2, respectively, forming a magnetic field conducting element. If the magnetic field of the permanent magnet 31 or 32 or 33 is weakened by the magnetic field generated by the tripping coil 4, then the armature 2 is opened by the spring force of a tripping spring 5, whereby it triggers.
  • the permanent magnet 31 at least partially a housing (in FIG. 1 not shown) forms for the trip relay.
  • a bobbin arranged on the coil leg 12, which carries the trip coil 4, in the housing, which at least partially forms the permanent magnet 31 or 32 or 33, is integrated.
  • the bobbin and the housing are in the interests of clarity 1 to 3 not shown.
  • the permanent magnet 32 on an outer side of the yoke leg 11 completely. Furthermore, the permanent magnet 32 is partially on an outer side of the coil leg 12 and on an outer side of the bearing leg 13.
  • the permanent magnet 33 completely encloses the yoke leg 11. Furthermore, the permanent magnet 33 encloses the coil leg 12 and the bearing leg 13 to a predetermined length completely.
  • FL1 designates the flux line which describes the magnetic flux from the permanent magnet 31 or 32 or 33 through the coil leg 12 and the tripping coil 4 and through the armature 2 and the bearing leg 13 back to the permanent magnet 31, 32 and 33, respectively. This is therefore the main flow for the hold function in the idle state of the release relay.
  • FL2 denotes the flux line which describes the magnetic flux which is guided exclusively in the yoke 1 and in the armature 2, and thus not in the permanent magnet 31 or 32 or 33. This is the excitation flux of the tripping coil 4 in the event of fault current tripping.
  • FL3 denotes the flux line which describes the magnetic flux that is exclusively in the permanent magnet 31 or 32 or 33 and thus is not guided by the trip coil 4. It is the tributary.
  • the permanent magnets 31, 32, 33 Due to the fact that the permanent magnets 31, 32, 33 abut the outside of the respective yoke leg 11 - and are not arranged inside the yoke 1 as in the case of the known release relays - no tributary FL 3 occurs in the armature 2. In this way, the required main flow FL 1 can be generated with less magnetically active material.
  • the permanent magnets 31, 32, 33 can thus be made more compact, whereby the size of the release relay can be reduced.
  • saturation problems in the yoke 1, by which the exciter flux FL2 in the trip coil 4 is weakened, and / or saturation problems in the armature 2 are reliably avoided.
  • the integration of the magnet in the housing or in the base plate or in the bobbin construction volume can be saved.

Claims (5)

  1. Relais de déclenchement comportant une culasse (1) en matériau magnétique doux et une armature (2) en matériau magnétique doux ainsi qu'un aimant permanent (31 ; 32 ; 33) en matériau magnétique dur, la culasse (1) étant constituée d'un bras de culasse (11), d'un bras de bobine (12) et d'un bras d'appui (13), et le bras de bobine (12) portant une bobine de déclenchement (4) et l'armature (2) pouvant pivoter autour d'un axe de rotation (21) placé sur le bras d'appui (13), l'aimant permanent s'appliquant extérieurement contre le bras de culasse (11), caractérisé en ce que l'aimant permanent (31 ; 32; 33) est constitué d'un matériau plastique chargé en particules magnétiques dures.
  2. Relais de déclenchement selon la revendication 1, caractérisé en ce que l'aimant permanent (31) constitue une plaque de base pour la culasse.
  3. Relais de déclenchement selon la revendication 1 ou 2, caractérisé en ce que l'aimant permanent (31 ; 32 ; 33) constitue au moins partiellement un boîtier pour le relais de déclenchement.
  4. Relais de déclenchement selon la revendication 3, caractérisé en ce qu'un corps de bobine placé sur le bras de bobine (12) et portant la bobine de déclenchement (4) est intégré dans le boîtier qui constitue au moins partiellement l'aimant permanent (31 ; 32 ; 33).
  5. Relais de déclenchement selon l'une des revendications 1 à 4, caractérisé en ce que l'aimant permanent (32 ; 33) s'applique entièrement contre au moins une face externe du bras de culasse (11) et s'applique au moins partiellement contre au moins une face externe du bras de bobine (12) et contre au moins une face externe du bras d'appui (13).
EP05101874A 2004-03-19 2005-03-10 Déclencheur électromagnétique Expired - Fee Related EP1577920B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410013608 DE102004013608A1 (de) 2004-03-19 2004-03-19 Auslöserelais
DE102004013608 2004-03-19

Publications (2)

Publication Number Publication Date
EP1577920A1 EP1577920A1 (fr) 2005-09-21
EP1577920B1 true EP1577920B1 (fr) 2012-10-03

Family

ID=34833204

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05101874A Expired - Fee Related EP1577920B1 (fr) 2004-03-19 2005-03-10 Déclencheur électromagnétique

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EP (1) EP1577920B1 (fr)
DE (1) DE102004013608A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8013695B2 (en) * 2007-04-27 2011-09-06 Mitsubishi Electric Corporation Electronic overload relay
US8410876B2 (en) * 2010-06-30 2013-04-02 Eaton Corporation Electronic overload relay switch actuation
CN108074783A (zh) * 2018-01-18 2018-05-25 常熟开关制造有限公司(原常熟开关厂） 磁脱扣装置及其整定电流调整方法、开关电器

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4228520A1 (de) * 1992-08-27 1994-03-03 Vacuumschmelze Gmbh Verfahren zur Herstellung von dünnwandigen kunststoffgebundenen Dauermagnetformteilen, wie zum Beispiel Schalenmagneten

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1321466A (fr) * 1962-02-05 1963-03-22 Cie De Construction Electr Perfectionnements aux relais polarisés
FR1337305A (fr) * 1962-07-02 1963-09-13 Gardy Particip App Perfectionnement apporté aux relais électriques à très haute sensibilité et ses applications
DE1282182B (de) * 1963-04-26 1968-11-07 Felten & Guilleaume Ag Oester Haltemagnetausloeser hoher Empfindlichkeit mit Permanentmagnet und schichtenfoermig aufgebautem Jochkoerper
DE7421405U (de) * 1974-06-24 1974-09-26 Felten & Guilleaume Schaltanlagen Gmbh Magnetsystem für Klappankerrelais
DE3022168A1 (de) * 1980-06-13 1981-12-24 Schupa Elektro-GmbH + Co KG, 5885 Schalksmühle Temperaturkompensation fuer hochempfindliche permanentmagnetische haftrelais
DE8524828U1 (fr) * 1985-08-30 1987-07-09 Brown, Boveri & Cie Ag, 6800 Mannheim, De
DE4342129A1 (de) * 1993-12-10 1995-06-14 Abb Patent Gmbh Elektrischer Schalter
DE4420318C2 (de) * 1994-06-11 1996-04-11 Schulman A Gmbh Zusammensetzung auf Polymerbasis zur Herstellung von magnetischen und magnetisierbaren Formkörpern
DE19921254A1 (de) * 1999-05-07 2001-01-04 Tyco Electronics Logistics Ag Elektromagnetisches Relais und Verfahren zu dessen Herstellung
EP1324365B1 (fr) * 2001-12-20 2004-11-17 Siemens Aktiengesellschaft Déclencheur électromagnétique

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4228520A1 (de) * 1992-08-27 1994-03-03 Vacuumschmelze Gmbh Verfahren zur Herstellung von dünnwandigen kunststoffgebundenen Dauermagnetformteilen, wie zum Beispiel Schalenmagneten

Also Published As

Publication number Publication date
EP1577920A1 (fr) 2005-09-21
DE102004013608A1 (de) 2005-10-27

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