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EP1473751B1 - Déclencheur électromagnétique - Google Patents

Déclencheur électromagnétique Download PDF

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Publication number
EP1473751B1
EP1473751B1 EP20030009932 EP03009932A EP1473751B1 EP 1473751 B1 EP1473751 B1 EP 1473751B1 EP 20030009932 EP20030009932 EP 20030009932 EP 03009932 A EP03009932 A EP 03009932A EP 1473751 B1 EP1473751 B1 EP 1473751B1
Authority
EP
European Patent Office
Prior art keywords
coil
trigger according
armature
spring
section
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 - Lifetime
Application number
EP20030009932
Other languages
German (de)
English (en)
Other versions
EP1473751A1 (fr
Inventor
Wolfgang Leitl
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
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Priority to DE50302699T priority Critical patent/DE50302699D1/de
Priority to EP20030009932 priority patent/EP1473751B1/fr
Priority to ES03009932T priority patent/ES2258182T3/es
Publication of EP1473751A1 publication Critical patent/EP1473751A1/fr
Application granted granted Critical
Publication of EP1473751B1 publication Critical patent/EP1473751B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01H71/2463—Electromagnetic mechanisms with plunger type armatures

Definitions

  • the invention relates to an electromagnetic release, in particular a circuit breaker, with a coil, a displaceable in this armature and a yoke, which is integrally formed with an at least partially engaging in the coil magnetic core, and a spring for tensioning the armature.
  • an electromagnetic trigger is known for example from DE 101 26 851 C1.
  • the DE 101 26 851 C1 known electromagnetic release in particular for a circuit breaker, has an integrally formed with a magnetic yoke magnetic core, which is disposed within the cross section of the trip coil and provided with a central opening for carrying a tappet connected to a movable armature is.
  • a circuit breaker such as a circuit breaker
  • the electromagnetic release is often due to the relatively large diameter of the trip coil that component, which dictates the minimum width of the circuit breaker.
  • the invention has for its object to provide an electromagnetic release, in particular for a circuit breaker, which is constructed particularly narrow with a simple design.
  • This object is achieved by an electromagnetic release with the features of claim 1.
  • This trigger has, in principle comparable to a conventional electromagnetic release with plunger armature, a coil, a movable in this anchor, a magnetic yoke with a core, as well as an anchor with a force against the actuating direction acted upon spring.
  • the anchor and the core of the magnetic yoke is not arranged symmetrically in the cross section of the coil. Rather, the magnetic core has an asymmetrically arranged in the coil cross-section, at least approximately normal to the coil axis aligned core surface, which faces the armature with an anchor surface.
  • This armature surface bends at least approximately at right angles from an armature main body, which is displaceable in the coil parallel to the coil axis. In the coil are thus adjacent to one side of the magnetic core and the other anchor main body.
  • the armature or a cooperating with this plunger thus does not penetrate the magnetic core or the magnetic yoke.
  • Both the armature and the magnetic core are preferably manufactured as single-layer sheet metal components, preferably with the same or similar thickness. Both sheet metal components anchor and core preferably have within the coil on a rectangular cross-section, with the respective narrow sides are opposite. Overall, therefore, the inner height of the approximately rectangular inner cross section of the coil is more than twice, preferably more than three times the inner width.
  • the armature is preferably formed as a one-piece component together with a plunger and penetrates axially the entire coil.
  • one side of the protruding from the coil armature can be used as a plunger for actuating in particular a moving contact and / or a Entklinkungsvortechnisch a circuit breaker, while on the opposite side of the coil from this outstanding part of the anchor is preferably the attachment of the spring.
  • This spring is preferably formed in a particularly space-saving manner as a conical compression spring, which between the coil or another immovable component, in particular a rigid housing structure and an integrally formed on the armature main body spring bearing legs, somewhat asymmetrical to the coil axis, is clamped.
  • the spring may for example be designed as a helical spring or spring of other geometry.
  • the armature main body which also forms the plunger, is displaceable past the magnetic core in the coil.
  • a partition wall of non-magnetic material is preferably arranged between it and the magnet armature within the coil. This partition is in a structurally advantageous manner preferably part of a coil-carrying bobbin.
  • an arc guide rail is preferably formed on the magnet yoke in a manner known per se.
  • a particularly space-saving design is given by the arc guide rail is arranged in cross section at right angles to the magnetic core.
  • a number of Deionbleche an arc extinguishing chamber are thus arranged in this embodiment also at right angles to the magnetic core and the armature. Since typically the width of the Deionbleche is less than the height of the stack formed from the Deionblechen, thus the preferably approximately rectangular coil cross-section is aligned along the given by the standards of the Deionbleche main extension direction of the arc extinguishing chamber.
  • the trigger builds particularly narrow. This makes it possible to accommodate two electromagnetic triggers of the same type next to each other within a standardized housing of a DIN rail mounted device, in particular with a width of 18 mm.
  • Both the armature combined with the plunger and the magnetic yoke combined with the magnetic core are preferably rational manufactured to be produced stamped parts or stamped and bent parts.
  • this part is preferably shaped in such a way that it has an elongate, essentially straight shape in the non-bent state in order to avoid unnecessary waste during punching.
  • the angular offset between the magnetic core and the arc guide rail by 90 ° is still feasible by a crease line is provided between the magnetic core and the arc guide, which includes in the final state of the component with both the magnetic core and the arc guide at an angle of 45 °.
  • the advantage of the invention is, in particular, that by the asymmetrical arrangement of a magnetic core and a magnet armature in a coil of a magnetic release having a substantially rectangular inner cross section whose width almost to the thickness of the one-piece sheet metal parts manufactured parts magnetic core - combined with a magnetic yoke - and anchor - combined with a pestle - is limited.
  • an electromagnetic release 1 of a switching device not shown in detail for example a circuit breaker, motor protection switch, circuit breaker, contactor or relay, preferably in the form of a DIN rail mounted device.
  • Essential components of the trigger 1 are a mounted on a sleeve-shaped bobbin 2 coil 3, a magnetic yoke 4, which is integrally formed with a magnetic core 5, and a displaceable in the coil 3 anchor 6. This also acts as a plunger for actuating a not shown, with a contact piece 7 on the magnetic yoke 4 cooperating moving contact.
  • An end face of the armature 6 projecting out of the coil 3 towards the magnet yoke 4 is referred to as a tappet surface 8.
  • This plunger surface 8 defines an elongate anchor main body 9, which penetrates the entire coil 3 and on the other side by a spring bearing leg 10 which is formed perpendicular to the anchor main body 9 is limited.
  • the spring bearing leg 10 has a nose 11, which serves to attach a spring formed as a conical compression spring 12, on the other hand, is mounted on a rigid structure, not shown, or directly on the bobbin 2 and the armature 6 biases against the actuation direction R.
  • the anchor 6 Upon actuation, ie electromagnetic triggering of the armature 6, an air gap 13 between a magnetic core 5 in the coil 3 bounding, at right angles to the coil axis A aligned core surface 14 and an opposite armature surface 15 is closed.
  • the armature surface 15 is the surface of an armature arm 16 which, as part of the armature 6, bends at right angles from the armature main body 9.
  • the anchor 6 has thus a total of an F-shape with the spring bearing leg 10 and the anchor arm 16 as mutually parallel F-leg.
  • the armature 6 is made as a sheet metal stamped part with a thickness d which corresponds at least approximately to the thickness of the magnetic core 5 and is slightly smaller than the inner width b of the coil 3.
  • the inner height h of the coil 3, however, is substantially given by the sum
  • the core width k corresponds approximately to the width of the armature surface 15 and has direct influence on the magnetic force between the core surface 14 and the armature surface 15.
  • the tappet width s of the armature main body 9, however, is in The core width k, which has a direct influence on the impact force of the magnet armature 6, exceeds the tappet width s by more than 50%.
  • the inner height h of the coil 3 is in the exemplary embodiment more than three times the inner width b. Due to the small inner width b, the total width B of the trigger 1, which only slightly exceeds the width of the coil 3, dimensioned such that two similar triggers 1 side by side in a 18 mm wide housing space.
  • the geometry of the magnetic yoke 4 with the arc guide rail 18 is particularly clear from FIGS. 5a to 5d.
  • Both the arc guide rail 18 and also integrally formed on the magnetic yoke 4 magnetic core 5 are aligned parallel to the coil axis A, but rotated by 90 ° from each other.
  • the magnetic yoke 4 including the magnetic core 5 and the arc guide rail 18 is made as a stamped and bent part from a stamped sheet metal strip, which originally an elongated straight shape.
  • the rotation of the magnetic core relative to the arc guide rail by 90 ° is possible by a crease line 19, which includes a respective 45 ° angle with each of said parts 5,18.
  • a crease line 19 which includes a respective 45 ° angle with each of said parts 5,18.
  • FIGS. 6 to 9 An alternative embodiment of an electromagnetic release 1 is shown in FIGS. 6 to 9.
  • the difference from the first exemplary embodiment explained above essentially lies in the shape of the magnetic yoke 4, which is shown in more detail in FIGS. 10a to 10d.
  • the stamped part from which the magnetic yoke 4 including the magnetic core 5 and the arc guide rail 18 is bent has an L-shape whose shorter L-leg is formed by the magnetic core 5.
  • the bending process is particularly simple.
  • the trigger 1 is characterized by a simple structure with a few rationally producible items, both the armature 6 and the magnetic yoke 4, as explained in more detail above, are multifunctional. In connection with this multifunctionality, there is a saving in soldering, welding or other connection points.
  • the electromagnetic release 1 is thus very well suited for manual mounting.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)

Claims (13)

  1. Déclencheur électromagnétique, comprenant une bobine (3), un induit (6), pouvant être déplacé dans celle-ci et une culasse d'aimant (4), laquelle est constituée d'une seul tenant avec un noyau magnétique (5), pénétrant au moins partiellement dans la bobine (3), ainsi qu'un ressort (12) pour le blocage de l'induit (6), caractérisé en ce que le noyau magnétique (5) et l'induit (6) sont disposés de manière dissymétrique à l'intérieur de la section transversale de la bobine (3), une surface d'induit (15), qui forme un coude au moins approximativement à angle droit depuis un corps principal d'induit (9), s'étendant parallèlement à l'axe (A) de la bobine, étant opposée à une surface de noyau (14), disposée au moins approximativement normalement à l'axe (A) de la bobine, du noyau magnétique (5) à l'intérieur de la bobine (3).
  2. Déclencheur selon la revendication 1, caractérisé en ce que le corps principal d'induit (9) pénètre axialement dans l'ensemble de la bobine (3).
  3. Déclencheur selon la revendication 1 ou 2, caractérisé en ce que la bobine (3) a une section transversale oblongue, d'une largeur intérieure (b) et d'une hauteur intérieure (h), laquelle fait plus du double de la largeur intérieure (b).
  4. Déclencheur selon l'une des revendications 1 à 3, caractérisé en ce que le noyau magnétique (5) est constitué en tant qu'élément en tôle à une couche.
  5. Déclencheur selon l'une des revendications 2 à 4, caractérisé en ce que le noyau magnétique (5) a une section transversale au moins approximativement rectangulaire, d'une épaisseur (d), laquelle correspond approximativement à la largeur intérieure (b) de la bobine.
  6. Déclencheur selon l'une des revendications 1 à 5, caractérisé par une paroi de séparation (17), disposée dans la bobine (3), entre le corps principal d'induit (9) et le noyau magnétique (5), en un matériau amagnétique.
  7. Déclencheur selon l'une des revendications 1 à 6, caractérisé en ce que le ressort (12) est disposé de manière dissymétrique par rapport à la section de la bobine, essentiellement parallèlement à l'axe (A) de la bobine.
  8. Déclencheur selon la revendication 7, caractérisé par une branche d'appui du ressort (10), formée sur le corps principal d'induit (9), disposée au moins approximativement à angle droit par rapport à celui-ci.
  9. Déclencheur selon la revendication 7 ou 8, caractérisé en ce que le ressort (12) est constitué en tant que ressort à boudin.
  10. Déclencheur selon la revendication 7 ou 8, caractérisé en ce que le ressort (12) est constitué en tant que ressort de compression conique.
  11. Déclencheur selon l'une des revendications 1 à 10, caractérisé par un guidage d'arc électrique (18), formé d'un seul tenant sur la culasse d'aimant (4).
  12. Déclencheur selon la revendication 11, caractérisé en ce que le guidage d'arc électrique (18) a une section transversale au moins approximativement rectangulaire, laquelle est tournée de 90° par rapport à la section du noyau magnétique (5).
  13. Déclencheur selon la revendication 12, caractérisé en ce que la culasse d'aimant (4) est formée, conjointement avec le guidage d'arc électrique (18), à partir d'une bande de tôle oblongue, essentiellement droite.
EP20030009932 2003-04-30 2003-04-30 Déclencheur électromagnétique Expired - Lifetime EP1473751B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE50302699T DE50302699D1 (de) 2003-04-30 2003-04-30 Elektromagnetischer Auslöser
EP20030009932 EP1473751B1 (fr) 2003-04-30 2003-04-30 Déclencheur électromagnétique
ES03009932T ES2258182T3 (es) 2003-04-30 2003-04-30 Mecanismo de disparo electromagnetico.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20030009932 EP1473751B1 (fr) 2003-04-30 2003-04-30 Déclencheur électromagnétique

Publications (2)

Publication Number Publication Date
EP1473751A1 EP1473751A1 (fr) 2004-11-03
EP1473751B1 true EP1473751B1 (fr) 2006-03-22

Family

ID=32981790

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030009932 Expired - Lifetime EP1473751B1 (fr) 2003-04-30 2003-04-30 Déclencheur électromagnétique

Country Status (3)

Country Link
EP (1) EP1473751B1 (fr)
DE (1) DE50302699D1 (fr)
ES (1) ES2258182T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010035072A1 (de) * 2010-08-21 2012-02-23 Abb Ag Magnetsystem und Installationsschaltgerät mit einem Magnetsystem
WO2018212687A1 (fr) * 2017-05-15 2018-11-22 Alfanar Comapny Dispositif de déclenchement instantané pour disjoncteur miniature et disjoncteur miniature le comprenant

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE493806C (de) * 1929-01-18 1930-03-13 Oerlikon Maschf Elektromagnetischer UEberstrom-Schnellschalter
DE937835C (de) * 1952-01-31 1956-01-19 Rudolf Bogenschuetz Ges Mit Be Selbstschalter, insbesondere in Stoepselform
DE10126851C1 (de) * 2001-06-01 2002-12-19 Siemens Ag Schaltgerät mit einem elektromagnetischen Auslöser

Also Published As

Publication number Publication date
DE50302699D1 (de) 2006-05-11
ES2258182T3 (es) 2006-08-16
EP1473751A1 (fr) 2004-11-03

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