EP1583130A1 - sous-ensemble magnétique d'un appareil électrique interrupteur - Google Patents
sous-ensemble magnétique d'un appareil électrique interrupteur Download PDFInfo
- Publication number
- EP1583130A1 EP1583130A1 EP05102436A EP05102436A EP1583130A1 EP 1583130 A1 EP1583130 A1 EP 1583130A1 EP 05102436 A EP05102436 A EP 05102436A EP 05102436 A EP05102436 A EP 05102436A EP 1583130 A1 EP1583130 A1 EP 1583130A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- radial
- magnetic
- axis
- opening
- movable core
- 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
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 50
- 230000006698 induction Effects 0.000 claims abstract description 4
- 230000004907 flux Effects 0.000 claims description 7
- 230000001960 triggered effect Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000452 restraining effect Effects 0.000 description 3
- 238000010304 firing Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 125000006850 spacer group Chemical group 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
- H01H71/2463—Electromagnetic mechanisms with plunger type armatures
-
- 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
- H01H71/2454—Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements
Definitions
- the present invention relates to a low switch electrical apparatus circuit-breaker or contactor-breaker, which can be used in particular for control and / or control of an electrical load such as a motor. More particularly, the invention relates to a subset of protection magnetic device of such a switch device for protecting the electrical charge by case of circulation of a high current.
- Magnetic protection subassemblies used in this type electrical devices are well-known devices, described in particular in documents FR2779567, EP0501844. They are responsible for opening quickly and abruptly the electrical contacts of a switch device in case of overload electrical power, typically when the current rises above a threshold of predetermined magnetic trip, for example thirteen times the rated current. For this, they include an electromagnet, sometimes called striker, whose coil is covered by the current to control. The moving core of the striker stores energy as the ampere-turns increase in the coil then, when the current exceeds the tripping threshold, releases suddenly this energy, so as to be able to separate efficiently and quickly the movable contacts of the fixed contacts of the device.
- the disadvantage of existing devices is that the threshold level of magnetic tripping is usually difficult to adjust and reproduce from a device to another, while the value of this threshold is obviously important for that the device can guarantee the safety of goods and people.
- manufacturing tolerances must be reduced to maintain high accuracy of dimensions and magnetic bonding areas between fixed and moving parts, which may require rectification, which penalizes the manufacture and the cost of such subassemblies.
- In some devices is obliged to add thin insulating spacers. It is also difficult in these devices to properly center the mobile core all the way through without implement sophisticated guidance to minimize gaming.
- the invention aims to find a simple and economical solution which on the one hand to effectively guide the mobile core of the firing pin to ensure of his good sliding during all his race while keeping his position precise with respect to fixed elements, such as the bolt of the firing pin.
- the invention also aims at the possibility of easily adjusting the threshold of magnetic tripping for a given caliber without the disparities in the dimensions of the different rooms and without the need to add elements additional, such as air gap rings.
- the solution avoids also complicate the manufacture of parts, especially the shape of the core mobile.
- a magnetic subassembly for switch electrical apparatus comprising a magnetic circuit consisting of a breech, a fixed core and a movable core sliding along a longitudinal axis X inside an insulating sheath between a triggered position and a rest position under the action of an induction coil disposed around the sheath.
- the mobile core has a radial crown separating a first part and a second part of different radial section.
- the cylinder head has a radial face substantially perpendicular to the X axis with an aperture centered on the X axis and traversed by the first part of the mobile core.
- Said opening has a corrugated rim composed of a plurality of teeth directed towards the X axis, hollow zones situated between each tooth receiving one end of the insulating sheath.
- the superposition between the radial ring of the movable core and the teeth of the opening form, in the rest position, an area radial magnet for the circulation of an axial magnetic flux. Moreover, he there is a fixed radial gap between a leading edge of each tooth and the first part mobile core, allowing the circulation of a radial magnetic flux.
- the end of the sheath has a plurality of protuberances axial forces held by wedging in the hollow areas of the opening.
- the invention also discloses an electrical switch device having least one mobile contact cooperating with at least one fixed contact, and having a such magnetic subassembly acting on the movable contact (s).
- a magnetic subassembly 1 is for controlling a power current flowing in a switch device and to trigger suddenly when this current exceeds a certain threshold, called the threshold of trigger.
- the magnetic subassembly 1 comprises a magnetic circuit composed of a magnetic yoke 10, a fixed core 39 and a movable core 30 which are made of ferromagnetic material.
- the fixed core 39 and the movable core 30 are aligned along a longitudinal axis X and are surrounded by a cylindrical insulating sheath 20.
- the movable core 30 slides inside this insulating sheath 20 along the longitudinal axis X between a position rest, schematized in Figure 3, and a triggered position, shown schematically in Figure 4.
- the movable core 30 moves under the action of an induction coil 25 arranged around the insulating sheath 20, but not shown in Figure 1.
- the movable core moves quickly from the rest position to the position triggered.
- a return member such as a return spring 29, brings the movable core 30 back to its rest position.
- the mobile core is composed of a first part 31 and a second part 32 juxtaposed towards the fixed core 39.
- the first and second portions 31, 32 are cylindrical and the diameter of the second part 32 is adjusted to be able to just slide inside the cylindrical sheath 20 without creating a game.
- the first and second cylindrical portions 31,32 have a different radial section, in the occurrence of the diameter of the portion 31 is less than that of the portion 32.
- the the diameter of the second portion 32 is substantially equal to that of the fixed core 39. parts 31 and 32 are therefore separated by a flange of the part 32 which thus forms a radial crown 33.
- the core mobile 30 also comprises a striker member 35, for example placed in the extension of the first part 31, which is responsible for transmitting the movement mobile core to the mobile contact (s) of the switch device, in order to the (s) separate (or) contact (s) fixed (s) corresponding (s), when the mobile core 30 goes into the triggered position.
- a striker member 35 for example placed in the extension of the first part 31, which is responsible for transmitting the movement mobile core to the mobile contact (s) of the switch device, in order to the (s) separate (or) contact (s) fixed (s) corresponding (s), when the mobile core 30 goes into the triggered position.
- the magnetic yoke 10, partially shown in FIG. 1, forms a substantially rectangular frame surrounding the coil 25 and the sheath 20, composed of two longitudinal planes 13, 14 substantially parallel to the axis X, surrounded by two radial faces 11, 12 substantially perpendicular to the axis X.
- the fixed core 39 is attached to one of the radial faces 12.
- the other radial face 11 has an opening 19 radial centered on the X axis and traversed by the first portion 31 of the movable core.
- the diameter of the second part 32 of the mobile core is on the other hand sufficiently important to prevent it from crossing the opening 19.
- a magnetic striker type subassembly magnetic is the following.
- the core mobile 30 In the absence of current in the coil 25, the core mobile 30 is held by the small return spring 29 in the rest position (see figure 3), which distances it from the fixed core 39. In this position, the radial crown 33 is pressed against the radial face 11 of the cylinder head 10, thus creating a bonding zone radial magnetic.
- a current begins to flow in the coil 25, it is creates a magnetic field passing from the fixed core 39 to the breech 12,13,14,11 then preferably passing from the radial face 11 directly to the crown 33 in the axial direction, as represented by the arrows 5 of FIG.
- the axial gap existing between the radial face 11 and the ring 33 is less than the fixed radial air gap between the radial face 11 and the circumference of the first part 31 of the movable core 30.
- the movable core 30 thus undergoes a force of attraction towards the fixed core 39 but also an opposite retaining force directed towards the face radial 11 of the magnetic yoke.
- the retention force is predominant and the movable core 30 remains substantially still, the axial air gap is always lower than the radial gap.
- the radial opening 19 has an inner periphery groove constituted by a plurality N of teeth 17 directed towards the axis X, distributed on this surrounding and surrounded by a plurality N of hollow areas 15 between each tooth 17 (see Figures 1 and 2).
- the dimensions of the teeth 17 are studied so that the first portion 31 of the movable core 30 can freely traverse the opening 19 in the interior space between the teeth 17, but so that the teeth 17 can by against retaining the second part 32.
- the radial crown 33 is pressed against the teeth 17, thus creating a very low axial air gap.
- the radial magnetic bonding zone created by the superposition of the radial ring 33 with teeth 17, allows the circulation of a magnetic flux axial 5.
- This radial magnetic zone is discontinuous because of the fluted periphery of the opening 19, which avoids having too much restraining force applied to the movable core 30 by the axial magnetic flux 5. This discontinuity goes further allow to adjust very easily the restraining force.
- the teeth 17 each have a front edge 18 directed towards the X axis and whose the shape is preferably complementary to the periphery of the first part 31 of the mobile core 30, which is in this case an arcuate shape.
- the radial gaps existing between the front edge 18 of the different teeth 17 and the perimeter of the first part 31 must remain constant.
- the axial movement of the movable core 30 must not be disturbed by jamming or otherwise, so that the striking member 35 acts effectively.
- the centering the movable core 30 along its entire stroke along the X axis is crucial. he is ensured thanks to the guidance of the insulating sheath 20 which surrounds at most just the second part 32 of the mobile core 30. However, this centering is difficult since requires firmly securing the two ends of the insulating sheath 20 by relative to the magnetic yoke 10.
- a first end of the insulating sheath 20 is easily attached to the face 12.
- the other opposite end of the insulating sheath 20 is advantageously fluted thanks to a plurality of N protuberances 21 which extend the insulating sheath in an axial direction X.
- These protuberances 21 engage in the N hollow areas 15 between the teeth 17 and are there maintained for example by simple jamming.
- Each hollow zone 15 comprises a rear wall 16 directed towards the axis X. The dimension of the hollow zones 15 is studied so that the protuberances 21 are thus pressed against the rear walls 16, preventing any radial movement of the sheath 20.
- This simple device makes it possible to keep the insulating sheath perfectly centered in relation to the X axis and therefore avoid the variations of the radial air gap and to ensure a good sliding of the mobile core 30. It is then easier to guarantee high reproducibility and reliability. performance of the magnetic subassembly 1.
- the number N of teeth 17 and zones hollow 15 is equal to three.
- the three hollow zones 15 cooperate with three protuberances 21 of the sheath 20.
- the teeth 17 are regularly distributed around the X axis and of equal width, to balance the radial forces due to the magnetic flux radial 6 passing through the radial air gaps and thus to maintain the centering of the first part 31 of the movable core 30 inside the opening 19.
- a number N different from three such as an opening 19 comprising two teeth 17 symmetrically opposite to the X axis and two protuberances 21 also symmetrical at the end of the sheath 20, as well as the suggest in Figures 3 and 4.
- the preferred embodiment describes a subset the insulating sheath, the fixed core and the movable core all possess circular radial sections.
- Other solutions could also be considered for these elements, such as radial sections of substantially square. They would then be associated with an opening 19 also of a shape square, with a fluted rim of four teeth (one on each side of the square) on which would come to rest the square radial crown of the nucleus mobile, the four teeth being surrounded by four hollow areas (in each corner square) cooperating with four corresponding prominences at the end of the insulating sheath.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
- Electromagnets (AREA)
- Electronic Switches (AREA)
- Air Bags (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Push-Button Switches (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
- Induction Machinery (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
Description
- la figure 1 représente une vue éclatée en perspective d'un sous- ensemble magnétique conforme à l'invention,
- la figure 2 détaille une vue simplifiée de face montrant l'ouverture dans la face radiale de la culasse magnétique,
- les figures 3 et 4 schématisent de façon simplifiée un exemple d'un sous- ensemble dans une vue axiale (ou longitudinale), respectivement en position repos et en position déclenchée.
Claims (8)
- Sous-ensemble magnétique pour appareil électrique interrupteur, comprenant un circuit magnétique constitué d'une culasse (10), d'un noyau fixe (39) et d'un noyau mobile (30) coulissant suivant un axe longitudinal (X) à l'intérieur d'une gaine isolante (20) entre une position déclenchée et une position repos sous l'action d'une bobine à induction (25) disposée autour de la gaine (20),caractérisé en ce que ladite ouverture (19) comporte un pourtour cannelé composé d'une pluralité (N) de dents (17) dirigées vers l'axe (X), des zones creuses (15) situées entre chaque dent (17) accueillant une extrémité de la gaine isolante (20).le noyau mobile (30) possédant une couronne radiale (33) séparant une première partie (31) et une seconde partie (32) de section radiale différente,la culasse (10) comportant une face radiale (11) sensiblement perpendiculaire à l'axe (X) avec une ouverture (19) centrée sur l'axe (X) et traversée par la première partie (31) du noyau mobile (30),
- Sous-ensemble magnétique selon la revendication 1, caractérisé en ce que la superposition entre la couronne radiale (33) du noyau mobile (30) et les dents (17) de l'ouverture (19) forme, en position repos, une zone magnétique radiale permettant la circulation d'un flux magnétique axial (5).
- Sous-ensemble magnétique selon la revendication 2, caractérisé en ce qu'il existe un entrefer radial fixe entre un bord avant (18) de chaque dent (17) et la première partie (31) du noyau mobile (30), permettant la circulation d'un flux magnétique radial (6).
- Sous-ensemble magnétique selon la revendication 1, caractérisé en ce que l'extrémité de la gaine (20) comporte une pluralité (N) de protubérances axiales maintenues par coincement dans les zones creuses (15) de l'ouverture (19).
- Sous-ensemble magnétique selon la revendication 1, caractérisé en ce que les dents (17) de l'ouverture (19) ont une largeur sensiblement identique.
- Sous-ensemble magnétique selon la revendication 1, caractérisé en ce que la gaine (20), le noyau fixe (39) et le noyau mobile (30) possèdent des sections radiales circulaires.
- Sous-ensemble magnétique selon la revendication 6, caractérisé en ce que l'ouverture (19) comporte trois dents (17) régulièrement réparties autour de l'axe (X) et l'extrémité de la gaine (20) comporte trois protubérances (21) engagées dans les zones creuses (15).
- Appareil électrique interrupteur doté d'au moins un contact mobile coopérant avec au moins un contact fixe, caractérisé en ce qu'il comporte un sous-ensemble magnétique (1) selon l'une des revendications précédentes agissant sur le ou les contacts mobiles.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0403460 | 2004-04-01 | ||
| FR0403460A FR2868596B1 (fr) | 2004-04-01 | 2004-04-01 | Sous-ensemble magnetique d'un appareil electrique interrupteur |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1583130A1 true EP1583130A1 (fr) | 2005-10-05 |
| EP1583130B1 EP1583130B1 (fr) | 2009-02-18 |
Family
ID=34878485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05102436A Expired - Lifetime EP1583130B1 (fr) | 2004-04-01 | 2005-03-25 | sous-ensemble magnétique d'un appareil électrique interrupteur |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6956454B1 (fr) |
| EP (1) | EP1583130B1 (fr) |
| CN (1) | CN100530484C (fr) |
| AT (1) | ATE423389T1 (fr) |
| DE (1) | DE602005012749D1 (fr) |
| ES (1) | ES2319787T3 (fr) |
| FR (1) | FR2868596B1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2402973A1 (fr) * | 2010-07-02 | 2012-01-04 | Schneider Electric Industries SAS | Déclencheur électromagnétique pour appareil électrique interrupteur, appareil electrique interrupteur comportant un tel déclencheur |
| CN109545606A (zh) * | 2018-12-06 | 2019-03-29 | 国网浙江省电力有限公司嘉兴供电公司 | 一种防闸刀误操作的抱箍装置及方法 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD629664S1 (en) * | 2008-12-18 | 2010-12-28 | Focke & Co. (Gmh & Co) | Armature for glue application |
| FR3133479B3 (fr) * | 2022-03-10 | 2024-03-29 | Hager Electro Sas | Actionneur pour un appareil électrique de protection |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2531215A1 (de) * | 1975-07-12 | 1977-02-03 | Bbc Brown Boveri & Cie | Magnetischer ausloeser |
| EP0515292A1 (fr) * | 1991-05-21 | 1992-11-25 | Schneider Electric Sa | Déclencheur électromagnétique pour un disjoncteur électrique à bas calibres |
| WO1999063564A1 (fr) * | 1998-06-03 | 1999-12-09 | Hager Electro | Sous-ensemble magnetique optimise |
-
2004
- 2004-04-01 FR FR0403460A patent/FR2868596B1/fr not_active Expired - Fee Related
-
2005
- 2005-03-25 ES ES05102436T patent/ES2319787T3/es not_active Expired - Lifetime
- 2005-03-25 DE DE602005012749T patent/DE602005012749D1/de not_active Expired - Lifetime
- 2005-03-25 AT AT05102436T patent/ATE423389T1/de not_active IP Right Cessation
- 2005-03-25 EP EP05102436A patent/EP1583130B1/fr not_active Expired - Lifetime
- 2005-03-29 US US11/091,769 patent/US6956454B1/en not_active Expired - Lifetime
- 2005-04-01 CN CNB2005100716224A patent/CN100530484C/zh not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2531215A1 (de) * | 1975-07-12 | 1977-02-03 | Bbc Brown Boveri & Cie | Magnetischer ausloeser |
| EP0515292A1 (fr) * | 1991-05-21 | 1992-11-25 | Schneider Electric Sa | Déclencheur électromagnétique pour un disjoncteur électrique à bas calibres |
| WO1999063564A1 (fr) * | 1998-06-03 | 1999-12-09 | Hager Electro | Sous-ensemble magnetique optimise |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2402973A1 (fr) * | 2010-07-02 | 2012-01-04 | Schneider Electric Industries SAS | Déclencheur électromagnétique pour appareil électrique interrupteur, appareil electrique interrupteur comportant un tel déclencheur |
| FR2962255A1 (fr) * | 2010-07-02 | 2012-01-06 | Schneider Electric Ind Sas | Declencheur electromagnetique pour appareil electrique interrupteur, appareil electrique interrupteur comportant un tel declencheur. |
| CN109545606A (zh) * | 2018-12-06 | 2019-03-29 | 国网浙江省电力有限公司嘉兴供电公司 | 一种防闸刀误操作的抱箍装置及方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2868596A1 (fr) | 2005-10-07 |
| FR2868596B1 (fr) | 2006-05-26 |
| US20050219023A1 (en) | 2005-10-06 |
| CN100530484C (zh) | 2009-08-19 |
| EP1583130B1 (fr) | 2009-02-18 |
| DE602005012749D1 (de) | 2009-04-02 |
| US6956454B1 (en) | 2005-10-18 |
| CN1677603A (zh) | 2005-10-05 |
| ES2319787T3 (es) | 2009-05-12 |
| ATE423389T1 (de) | 2009-03-15 |
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