EP1111643A1 - Déclencheur magnétique - Google Patents
Déclencheur magnétique Download PDFInfo
- 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
Links
- 238000004804 winding Methods 0.000 claims abstract 3
- 230000004907 flux Effects 0.000 claims description 17
- 230000009977 dual effect Effects 0.000 abstract 1
- 230000005347 demagnetization Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 229910052745 lead Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
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)
Abstract
Description
Claims (8)
- Déclencheur magnétique pour appareil électrique interrupteur, comportant un circuit magnétique fixe (10) auquel est associé un aimant permanent (A), au moins une bobine (Ca,Cb) pouvant être parcourue par un courant électrique et associée à une branche (10a,10b) du circuit pour déterminer un flux magnétique fonction du courant, ainsi qu'une palette déplaçable (11) sollicitée par un ressort et déterminant avec le circuit magnétique fixe une boucle de flux principal (T1),
caractérisé par le fait que :le circuit magnétique (10) comprend, près de l'aimant (A), au moins une patte (17a,17b) de déviation de flux magnétique définissant une boucle de flux secondaire (T2) dotée d'au moins un entrefer secondaire (20a,20b),la patte est agencée relativement au circuit magnétique fixe (10) et à l'aimant (A) de manière qu'une surintensité dans la bobine dévie le flux de l'aimant vers la boucle secondaire (T2). - Déclencheur selon la revendication 1, caractérisé par le fait que le circuit magnétique comprend deux plaquettes parallèles (10a, 10b) présentant chacune une branche principale (19a,19b) et une patte de déviation (17a,17b), les extrémités libres des pattes définissant deux entrefers secondaires transversaux (20a,20b), et par le fait que l'aimant (A) est disposé entre les plaquettes près des pattes.
- Déclencheur selon la revendication 2, caractérisé par le fait que les plaquettes (10a, 10b) du circuit magnétique sont identiques et que la patte (17a,17b) d'une plaquette est orientée transversalement à la branche (19a,19b) et s'étend jusqu'à l'autre plaquette, en étant séparée de celle-ci par l'entrefer secondaire (20a,20b).
- Déclencheur selon la revendication 2, caractérisé par le fait qu'à chaque plaquette (10a, 10b) est associée une bobine (Ca,Cb).
- Déclencheur selon la revendication 2, caractérisé par le fait que chaque plaquette (10a, 10b) présente une extrémité polaire (14a,b) et une extrémité opposée (15a,b) adjacente à l'aimant (A), ainsi que des petits côtés offrant entre les extrémités (14a,b;15a,b) un retrait (16a,16b) pour le passage des enroulements de la bobine respective (Ca,Cb).
- Déclencheur selon la revendication 4, caractérisé par le fait que chaque bobine (Ca,Cb) est enroulée sur une demi-coquille isolante (21a,21b) à section en U enveloppant par les ailes du U les petits côtés de la plaquette correspondante, de sorte que la bobine est immédiatement adjacente à une face latérale de la plaquette, les demi-coquilles étant assemblées de manière à former une structure isolante portant les bobines et contenant les plaquettes.
- Déclencheur selon la revendication 6, caractérisé par le fait que la structure isolante définit des butées (22a,22b) d'application des branches du circuit magnétique , ces butées formant un plan de référence commun pour la palette.
- Déclencheur selon la revendication 1, caractérisé par le fait que la palette (11) est liée par une liaison rotulante (R) à une pièce d'actionnement (12) déplaçable en translation et sollicitée par le ressort (13).
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 (fr) | 2001-06-27 |
| EP1111643B1 EP1111643B1 (fr) | 2008-06-18 |
Family
ID=9553685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00403539A Expired - Lifetime EP1111643B1 (fr) | 1999-12-20 | 2000-12-15 | Déclencheur magnétique |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6472964B2 (fr) |
| EP (1) | EP1111643B1 (fr) |
| DE (1) | DE60039222D1 (fr) |
| ES (1) | ES2304342T3 (fr) |
| FR (1) | FR2802702B1 (fr) |
Families Citing this family (1)
| 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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1051370B (de) * | 1958-01-14 | 1959-02-26 | Siemens Ag | Fehlerstromschutzschalter |
| WO1982003943A1 (fr) * | 1981-05-01 | 1982-11-11 | Inc Ledex | Solenoide de declenchement |
| DE19820768A1 (de) * | 1998-05-08 | 1999-11-11 | Siemens Ag | Haltemagnetauslöser |
Family Cites Families (1)
| 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 |
-
1999
- 1999-12-20 FR FR9916310A patent/FR2802702B1/fr not_active Expired - Fee Related
-
2000
- 2000-12-15 DE DE60039222T patent/DE60039222D1/de not_active Expired - Lifetime
- 2000-12-15 ES ES00403539T patent/ES2304342T3/es not_active Expired - Lifetime
- 2000-12-15 EP EP00403539A patent/EP1111643B1/fr not_active Expired - Lifetime
- 2000-12-20 US US09/739,784 patent/US6472964B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1051370B (de) * | 1958-01-14 | 1959-02-26 | Siemens Ag | Fehlerstromschutzschalter |
| WO1982003943A1 (fr) * | 1981-05-01 | 1982-11-11 | Inc Ledex | Solenoide de declenchement |
| DE19820768A1 (de) * | 1998-05-08 | 1999-11-11 | Siemens Ag | Haltemagnetauslöser |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2802702B1 (fr) | 2002-02-01 |
| EP1111643B1 (fr) | 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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