WO2010109129A1 - Magnetothermal release mechanism - Google Patents
Magnetothermal release mechanism Download PDFInfo
- Publication number
- WO2010109129A1 WO2010109129A1 PCT/FR2010/050525 FR2010050525W WO2010109129A1 WO 2010109129 A1 WO2010109129 A1 WO 2010109129A1 FR 2010050525 W FR2010050525 W FR 2010050525W WO 2010109129 A1 WO2010109129 A1 WO 2010109129A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pallet
- magnetothermic
- cylinder head
- terminal
- circuit
- Prior art date
Links
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
- H01H71/40—Combined electrothermal and electromagnetic mechanisms
- H01H71/405—Combined electrothermal and electromagnetic mechanisms in which a bimetal forms the inductor for the electromagnetic mechanism
-
- 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
- H01H71/08—Terminals; Connections
Definitions
- the present invention relates on the one hand to a magnetothermal actuator or trigger, for example for a circuit-breaker type electrical appliance, allowing the cut-off of at least one line in the event of a short-circuit or overload in a circuit, and on the other hand the appliances which are equipped.
- the line protection circuit breakers comprise, by line and between two connection terminals, a fixed contact and a movable contact that can be separated in particular by the action of a magnetothermal actuator on a mechanical trigger lock.
- the magnetic part of the actuator essentially comprises a conductive element producing the induction, which cooperates with a magnetic circuit with a fixed yoke and a moving part acting as a triggering organ or cooperating with a striker to ensure, in the event of a short-circuit, the disruption of the device by tilting of the mechanical lock which causes IBuverture of the moving contact.
- Thermal tripping is conventionally carried out by a bimetallic strip, with direct or indirect heating.
- the bimetallic traversed by a current serves as a transducer of the magnetic circuit.
- the current is sufficient for the magnetic force induced in the magnetic circuit to cause a displacement of its moving part - against interference with biasing means - for triggering the lock.
- the magnetothermal trip units are for example connected between the movable contact of each line and an output terminal cooperating with a connection device of cage and screw type.
- the circuit portion is then in fact electrically constituted by the movable contact, the bimetallic strip and the output terminal, which are connected for example by flexible braids welded at their ends to the components they connect.
- the magnetic actuator is arranged at the bimetallic level so that the bimetal can play its role as a generator.
- each line is equipped with a magnetothermic actuator
- it conventionally comprises a movable pallet magnetic circuit pivotable with respect to a fixed yoke forming the remainder of the magnetic circuit, said cylinder head having a U-shaped section and surrounding a thermal bimetal electrically connected to a terminal of It Prim, biasing means maintaining the pallet in the open position with respect to the yoke in the absence of short circuit current.
- the terminal and the cylinder head are fixed to the other and to an intermediate piece provided with pivot bearings for the pallet, the assembly forming a single-unit subassembly.
- the advantage of such a subset is particularly patent in the phase of -hdustrialisation, since said subassembly can be preassembled and then handled in a single operation at the time of assembly.
- the fixed yoke is not directly connected to the movable pallet, which is articulated to the intermediate part. If the pallet was directly articulated to the cylinder head, a fraction of the magnetic field would pass through the metal bearings, and would not be directly available in IBntrefer to operate the pallet. This magnetic separation between the fixed yoke and the movable pallet is carried out by means of said intermediate piece. This consists of a non-magnetic material of the brass type.
- the terminal is in the shape of an L on the back of which is fixed the bottom of the gutter-shaped yoke, the intermediate piece being fixed between said bottom and the back of the terminal, said surrounding piece at least partially outside the cylinder head and having two branches protruding in an axial direction, the ends of said branches having opposite orifices in which the pallet pivots.
- the pallet is thus easily clipped into said holes of the intermediate piece during Itassemblage.
- the return means consist of a compression spring interposed between the pallet, via a tab protruding from the free end thereof to the door of the hinge with the intermediate piece, and a hook extending said piece beyond the cylinder head. , which exceeds a second leg.
- compression spring for magnetic adjustment has several advantages: it provides a solution that is less expensive and more accurate than the tension or torsion springs usually used in this application.
- the compression spring is adapted to the gauge of the cutoff device.
- the mobile pallet comprises at least two thicknesses obtained by folding on itself the magnetic sheet constituting said pallet. The increase in thickness thus easily obtained at the passage of the magnetic flux makes it possible to delay the magnetic saturation of the material.
- the number of folding is multipliable and depends on the technical context and the constraints associated therewith.
- the pallet preferably also has a tab for adjusting the amplitude of its tilting, whose free end cooperates with the housing of Itàppareil electric.
- a wall of the housing of the assembly of the invention in the housing is positioned to serve as a stop for this tab, whose position relative to the pallet is easily modifiable to adjust the amplitude of the pivoting movement.
- Said tongue is for this purpose constituted ofDine portion of the sheet of the adjacent pallet dHin edge perpendicular to the pivot axis, obtained by cutting dDin segment parallel to said edge and undergoing a folding whose Itangle is variable and constitutes the setting parameter of l-amplitude the tilting of the pallet.
- the bimetal passes into the gutter forming the yoke, in which it is oriented substantially parallel to Itâxe said gutter.
- said bimetallic strip is also electrically connected to the terminal at the outlet of the cylinder head by at least one flexible conductive braid welded at the free end of the bimetallic strip and at the other end to the back of said terminal.
- the bimetallic strip is fixed to the sole of the box of the device at its end opposite to the free end, and connected at this level to a movable contact of the switchgear also via at least one conductive braid.
- flexible also relates to breaker-type electrical breaker devices which are equipped with magnetothermal actuators as described above, ie having for each line to protect a movable contact capable of cooperating with a fixed contact. a mechanical disjunction lock capable of tilting to separate the movable contact from the fixed contact in case of overcurrent in a line, the magnetothermic actuator then being able to act on said lock to switch it.
- FIG. 1 is a perspective view of a first directly heated version of a magnetothermic actuator according to the invention
- Figure 2 shows a sectional view of the version of Figure 1
- FIG. 3 represents a perspective view of a second indirectly heated version of a magnetothermic actuator according to the invention.
- the magnetothermic actuator of the invention consists of a fixed magnetic yoke (1) in "gutter” and a pallet (2) movable also in magnetic material, the yoke (1) and the pallet ( 2) surrounding a bimetallic strip (3).
- the bimetallic strip (3) is electrically connected to a terminal (4) of the electrical apparatus via a conductive braid (5).
- the pallet (2) is rotatable with respect to an intermediate piece (6) provided with pivot bearings (7, 7).
- Two stops (8, 8) arranged near the pivoting point make it possible to limit the amplitude of the tilting. the pallet (2) under the effect of the compression spring (9), which permanently urges said pallet (2) towards said stops (8, 8IJI.
- the spring (9), adapted to each caliber, is arranged between the pallet (2) and the fixed yoke (1), more precisely on two lugs (10, 11) secured respectively to a hook (13) protruding from the intermediate piece ( 6) and the pallet (2).
- the latter has two layers or thicknesses folded (2Q 2 [ ⁇ whose IQne is equipped dDine tongue (12) for the adjustment of i ⁇ implitude of the tilt, by cooperation with a wall of the housing of l' ⁇ ippareil (not shown) .
- the stops (8, 8 [Jl are therefore only used to allow Provision of pre-assembled sub-assembly, ready to be integrated in the housing, and are not used for adjustment once the subassembly is inserted into the base of the housing.
- the configuration of the invention makes it possible to obtain, for a small width that is compatible with its introduction into modules, sufficient magnetic efficiency so that the striker can trigger the magnetic lock in the event of a short circuit in the line protected by the circuit breaker equipped with such an actuator.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Breakers (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012501351A JP5632449B2 (en) | 2009-03-23 | 2010-03-23 | Thermomagnetic release mechanism |
CN201080022484.XA CN102439681B (en) | 2009-03-23 | 2010-03-23 | Magnetic Thermal release mechanism |
EP10715967.5A EP2411995B1 (en) | 2009-03-23 | 2010-03-23 | Thermal-magnetic tripping mechanism |
BRPI1006271A BRPI1006271A2 (en) | 2009-03-23 | 2010-03-23 | thermomagnetic trigger and circuit breaker |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0951817A FR2943455B1 (en) | 2009-03-23 | 2009-03-23 | MAGNETOTHERMIC TRIGGER |
FR0951817 | 2009-03-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010109129A1 true WO2010109129A1 (en) | 2010-09-30 |
Family
ID=41198564
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2010/050525 WO2010109129A1 (en) | 2009-03-23 | 2010-03-23 | Magnetothermal release mechanism |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP2411995B1 (en) |
JP (2) | JP5632449B2 (en) |
CN (1) | CN102439681B (en) |
BR (1) | BRPI1006271A2 (en) |
FR (1) | FR2943455B1 (en) |
WO (1) | WO2010109129A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2987164B1 (en) * | 2012-02-17 | 2014-03-28 | Hager Electro Sas | INSTANTANEOUS TRIGGER FOR ELECTRICAL DEVICE FOR PROTECTING LINES OF THE CIRCUIT BREAKER TYPE. |
EP2750158B1 (en) * | 2012-12-27 | 2015-08-26 | Hager Electro Sas | Thermal, magnetic subassembly for a selective circuit-breaker |
FR3023057B1 (en) * | 2014-06-30 | 2016-07-22 | Hager-Electro Sas | MAGNETOTHERMIC TRIGGER. |
EP3373319B1 (en) * | 2017-03-09 | 2021-11-10 | LSIS Co., Ltd. | Circuit breaker with instant trip mechanism |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0572773A1 (en) * | 1992-06-04 | 1993-12-08 | Mitsubishi Denki Kabushiki Kaisha | Circuit breaker with overcurrent tripping device |
DE29515254U1 (en) * | 1995-09-23 | 1995-12-14 | Kloeckner Moeller Gmbh | Tripping device consisting of an electromagnetic quick release and a bimetal strip of an overcurrent release that is operatively connected to it |
DE10036351A1 (en) * | 2000-07-26 | 2002-02-28 | Moeller Gmbh | Tripping device for tripping out overload or short-circuits has a U-shaped magnetic yoke, a cutout blade impacted by a spring device via pole shanks in the magnetic yoke and a U-shaped bimetallic element. |
DE102006005697A1 (en) * | 2006-02-08 | 2007-08-16 | Moeller Gmbh | Device for triggering an electrical switching device |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60127629A (en) * | 1983-12-14 | 1985-07-08 | 松下電工株式会社 | Circuit breaker |
JPH0896689A (en) * | 1994-09-28 | 1996-04-12 | Mitsubishi Electric Corp | Trip device of circuit breaker |
JP2001068007A (en) * | 1999-08-26 | 2001-03-16 | Matsushita Electric Works Ltd | Electromagnetic tripping device of circuit breaker |
JP3640169B2 (en) * | 2001-01-26 | 2005-04-20 | 松下電工株式会社 | Circuit breaker trip device |
JP4905112B2 (en) * | 2006-12-18 | 2012-03-28 | 富士電機機器制御株式会社 | Circuit breaker overcurrent trip device |
CN201204164Y (en) * | 2008-05-31 | 2009-03-04 | 常熟开关制造有限公司(原常熟开关厂) | Pyromagnetic release |
-
2009
- 2009-03-23 FR FR0951817A patent/FR2943455B1/en not_active Expired - Fee Related
-
2010
- 2010-03-23 EP EP10715967.5A patent/EP2411995B1/en active Active
- 2010-03-23 CN CN201080022484.XA patent/CN102439681B/en active Active
- 2010-03-23 BR BRPI1006271A patent/BRPI1006271A2/en not_active Application Discontinuation
- 2010-03-23 JP JP2012501351A patent/JP5632449B2/en active Active
- 2010-03-23 WO PCT/FR2010/050525 patent/WO2010109129A1/en active Application Filing
-
2014
- 2014-08-08 JP JP2014162481A patent/JP2014225473A/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0572773A1 (en) * | 1992-06-04 | 1993-12-08 | Mitsubishi Denki Kabushiki Kaisha | Circuit breaker with overcurrent tripping device |
DE29515254U1 (en) * | 1995-09-23 | 1995-12-14 | Kloeckner Moeller Gmbh | Tripping device consisting of an electromagnetic quick release and a bimetal strip of an overcurrent release that is operatively connected to it |
DE10036351A1 (en) * | 2000-07-26 | 2002-02-28 | Moeller Gmbh | Tripping device for tripping out overload or short-circuits has a U-shaped magnetic yoke, a cutout blade impacted by a spring device via pole shanks in the magnetic yoke and a U-shaped bimetallic element. |
DE102006005697A1 (en) * | 2006-02-08 | 2007-08-16 | Moeller Gmbh | Device for triggering an electrical switching device |
Also Published As
Publication number | Publication date |
---|---|
JP5632449B2 (en) | 2014-11-26 |
BRPI1006271A2 (en) | 2016-02-23 |
JP2014225473A (en) | 2014-12-04 |
CN102439681A (en) | 2012-05-02 |
EP2411995A1 (en) | 2012-02-01 |
EP2411995B1 (en) | 2018-01-17 |
CN102439681B (en) | 2015-12-09 |
FR2943455A1 (en) | 2010-09-24 |
JP2012521626A (en) | 2012-09-13 |
FR2943455B1 (en) | 2011-05-06 |
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