EP1111643A1 - Magnetauslöser - Google Patents

Magnetauslöser Download PDF

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Publication number
EP1111643A1
EP1111643A1 EP00403539A EP00403539A EP1111643A1 EP 1111643 A1 EP1111643 A1 EP 1111643A1 EP 00403539 A EP00403539 A EP 00403539A EP 00403539 A EP00403539 A EP 00403539A EP 1111643 A1 EP1111643 A1 EP 1111643A1
Authority
EP
European Patent Office
Prior art keywords
magnetic circuit
magnet
coil
trigger according
plates
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.)
Granted
Application number
EP00403539A
Other languages
English (en)
French (fr)
Other versions
EP1111643B1 (de
Inventor
François Ing. Chaudot
Frédéric Ing. Dorschner
Dominique Dessinateur Millot
Daniel Ing. Riffaud
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.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric Industries SAS
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 Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP1111643A1 publication Critical patent/EP1111643A1/de
Application granted granted Critical
Publication of EP1111643B1 publication Critical patent/EP1111643B1/de
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
    • H01H71/32—Electromagnetic mechanisms having permanently magnetised part
    • H01H71/321—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements

Definitions

  • the present invention relates to a magnetic trip device for an electrical appliance switch, comprising a fixed magnetic circuit with which a magnet is associated permanent, at least one coil which can be traversed by an electric current and associated with a branch of the circuit to determine a magnetic flux function of the current, as well as a movable pallet stressed by a spring and determining with the magnetic circuit fixed a main flow loop.
  • the object of the invention is to make a trigger of the type described very reactive and to simplify implementation.
  • the magnetic circuit comprises, near the magnet, at least one magnetic flux deflection tab defining a secondary flux loop with at least one secondary air gap, and the tab is arranged relative to the fixed magnetic circuit and magnet so that an overcurrent in the coil deflects the flux from the magnet to the secondary loop.
  • the magnetic circuit comprises two identical parallel plates each having on the one hand a main branch carrying a coil and on the other hand a deflection tab, the free ends of the tabs defining two transverse secondary air gaps, and the magnet is arranged between the plates near the legs.
  • Each coil can be wound on a U-section insulating half-shell enveloping by the wings of the U the short sides of the corresponding plate, of so that the coil is immediately adjacent to a side face of the wafer, the half-shells being assembled so as to form an insulating structure carrying the reels and containing the plates.
  • Figure 1 is a sectional elevation of a trip device according to the invention.
  • Figure 2 is a top view in section along the plane II-II.
  • Figure 3 is a section along the plane III-III.
  • Figure 4 shows in perspective and on a large scale the magnetic circuit of the trigger.
  • Figure 5 is an exploded perspective view of the trigger.
  • the magnetic release illustrated in Figure 1 is intended to be mounted in a circuit breaker, contactor-circuit breaker or similar switching device with protection and it comprises a magnetic circuit M provided with a fixed part 10, called hereinafter fixed magnetic circuit, and a movable part 11, hereinafter called a pallet mobile; a permanent magnet A is associated with the fixed magnetic circuit 10 for it impart a permanent magnetic flux.
  • the fixed magnetic circuit 10 comprises two plates 10a, 10b, parallel to each other, of generally flat shape with mean planes Pa, Pb extending in a direction X. The plates are preferably identical.
  • On the plates 10a, 10b of the fixed magnetic circuit are arranged two respective coils Ca, Cb. These coils are electrically mounted in series in a trip control circuit to provide, in the event of overcurrent in this circuit, the ampere-turns necessary for the displacement of the palette 11.
  • Pallet 11 can be moved in translation in direction X and it is coupled to one end 12a of an actuating part such as a pusher 12.
  • the pusher is able to actuate a circuit breaker tripping mechanism.
  • the R bond between the end 12a of the pusher 12 and an associated central recess 11a of the pallet 11 is slightly swiveling, as shown in FIG. 1, to optimize the air gap between the pallet and the fixed circuit.
  • the pusher is biased by a spring 13, for example a compression spring, tending to separate the pallet from the ends polar 14a, 14b of the branches of the fixed magnetic circuit.
  • the palette is applied on the fixed magnetic circuit by the permanent magnet A against the force of the spring. The appearance of an overcurrent in the coils causes the separation of the pallet 11 opposite the fixed magnetic circuit 10 and the displacement of the pusher 12 thanks to the force of the spring 13.
  • Each plate 10a, 10b has on its short sides, between its polar ends 14a, 14b and its ends 15a, 15b opposite the ends 14a, 14b, a part set back 16a, 16b which receives the coils Ca, Cb so as to reduce the bulk of the trigger.
  • the ends 15a, 15b of the plates 10a, 10b are intended to enclose the permanent magnet A and to determine a path T2 for deflection of the magnetic flux.
  • the ends 15a, 15b of the plates are shaped specific way and include, to form two air gaps, on one side a leg respective 17a, 17b and on the other side a flange 18a, 18b delimiting the narrowed part 16a, 16b.
  • each tab 17a, 17b secured to a plate defines with the opposite edge 18b, 18a of the other plate a predetermined transverse air gap 20a, 20b.
  • Cross air gap means that the air gap extends in a plane perpendicular to the X direction.
  • the legs 17a, 17b constitute branches of flow deflection of the magnetic circuit extending or continuing transversely (i.e. perpendicularly in planes Pa, Pb and in direction X) the main branches 19a, 19b formed by plates 10a, 10b, to channel the magnetic flux in an overcurrent state induced.
  • the inserts thus offer an L-shape - or with a small wing and a large wing - whose large wing is made up of the main branch and whose small wing is constituted by the leg or secondary branch.
  • Permanent magnet A is inserted between the plates 10a, 10b at the level of the transverse lugs 17a, 17b and flanges 18a, 18b so as to brace the plates arranged in some head to tail (see Figure 3); we see in this figure that, in cross section, the plates offer at their ends 15a, 15b an L-shape for embracing the magnet A by generating the two air gaps 20a, 20b. It is interesting to have identical plates, which simplifies the production of the trigger.
  • the coils Ca, Cb are half wound on an insulating half-shell 21a, 21b and half on the respective plate 10a, 10b, so as to be thus in direct contact with it on its internal face (see Figure 2).
  • Half shells have a U shape wrapping the plates 10a, 10b and provide stops 22a, 22b for shoulders 23a, 23b provided in any suitable place of the plates.
  • the assembled half-shells constitute a shell or carcass of mounting of the coils, this carcass being housed in an insulating body D of the release.
  • the body D has an opening 24 for the pusher 12 and constitutes support for the spring 13.
  • the pallet 11 In the absence of overcurrent in the coils Ca, Cb, the pallet 11 is applied on the pole surfaces of the ends 14a, 14b of the magnetic plates 10a, 10b by the permanent magnet A against the force of the spring 13.
  • the developed flux by A flows in a main loop T1 formed by the main branches 19a, 19b of the pads and the pallet 11.
  • the coils develop a magnetic flux which opposes the flux of the permanent magnet and which deflects it towards the secondary branches constituted by the legs 17a, 17b; the flux created by the permanent magnet then passes through a deflection loop T2 comprising the tabs 17a, 17b of the plates, the air gaps 20a, 20b and the edges 18a, 18b of the platelets.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Electromagnets (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP00403539A 1999-12-20 2000-12-15 Magnetauslöser Expired - Lifetime EP1111643B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9916310 1999-12-20
FR9916310A FR2802702B1 (fr) 1999-12-20 1999-12-20 Declencheur magnetique

Publications (2)

Publication Number Publication Date
EP1111643A1 true EP1111643A1 (de) 2001-06-27
EP1111643B1 EP1111643B1 (de) 2008-06-18

Family

ID=9553685

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00403539A Expired - Lifetime EP1111643B1 (de) 1999-12-20 2000-12-15 Magnetauslöser

Country Status (5)

Country Link
US (1) US6472964B2 (de)
EP (1) EP1111643B1 (de)
DE (1) DE60039222D1 (de)
ES (1) ES2304342T3 (de)
FR (1) FR2802702B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10523180B2 (en) 2016-03-11 2019-12-31 Akoustis, Inc. Method and structure for single crystal acoustic resonator devices using thermal recrystallization

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1051370B (de) * 1958-01-14 1959-02-26 Siemens Ag Fehlerstromschutzschalter
WO1982003943A1 (en) * 1981-05-01 1982-11-11 Inc Ledex Trip solenoid
DE19820768A1 (de) * 1998-05-08 1999-11-11 Siemens Ag Haltemagnetauslöser

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8024489U1 (de) * 1980-09-12 1980-12-11 Siemens Ag, 1000 Berlin Und 8000 Muenchen Auslöser, insbesondere Haltemagnetauslöser für Fehlerstromschutzschalter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1051370B (de) * 1958-01-14 1959-02-26 Siemens Ag Fehlerstromschutzschalter
WO1982003943A1 (en) * 1981-05-01 1982-11-11 Inc Ledex Trip solenoid
DE19820768A1 (de) * 1998-05-08 1999-11-11 Siemens Ag Haltemagnetauslöser

Also Published As

Publication number Publication date
FR2802702B1 (fr) 2002-02-01
EP1111643B1 (de) 2008-06-18
DE60039222D1 (de) 2008-07-31
US20020050879A1 (en) 2002-05-02
FR2802702A1 (fr) 2001-06-22
US6472964B2 (en) 2002-10-29
ES2304342T3 (es) 2008-10-16

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