WO2005122202A1 - Sous-ensemble magnetique a ressort de torsion - Google Patents
Sous-ensemble magnetique a ressort de torsion Download PDFInfo
- Publication number
- WO2005122202A1 WO2005122202A1 PCT/FR2005/001137 FR2005001137W WO2005122202A1 WO 2005122202 A1 WO2005122202 A1 WO 2005122202A1 FR 2005001137 W FR2005001137 W FR 2005001137W WO 2005122202 A1 WO2005122202 A1 WO 2005122202A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- spring
- assembly
- magnetic
- magnetic sub
- assembly according
- 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
- H01H71/24—Electromagnetic mechanisms
Definitions
- the present invention relates to a magnetic subassembly for an electrical device of the circuit breaker type, conventionally composed of an inductor coil associated with a magnetic yoke and a magnetic core movable in translation against a spring, said core driving with him a striker intended to trigger a mechanical lock controlling the position of the movable contact relative to the fixed contact.
- the function of magnetic assemblies or trip units is to separate the mobile and fixed contacts respectively in the event of a short circuit in the circuit in which they are connected.
- the sudden overcurrent traversing the coil saturates the magnetic circuit, causing the displacement of the movable core which in fact fills the air gap which separates it from the rest of the magnetic yoke.
- a return spring is interposed between a fixed element relative to the housing of the device and the movable core, so that the latter returns to the rest position.
- the objective of the present invention is therefore to propose a configuration such that the resistive energy opposed by the spring decreases as the moving assembly formed by the core and its striker moves during a short circuit.
- the magnetic sub-assembly of the invention is characterized in that said spring is a torsion spring with a spiral central portion and two end arms deploying in V bearing against abutments, the spring and said stops being driven in a relative movement such that the distance between the stops and the central portion of the spring in the direction of translation increases as the air gap between the rioyau and the cylinder head closes.
- the angle made by the end arms with respect to the axis of movement changes in effect during the movement.
- the torsion spring has symmetry with respect to the axis of movement of the mobile assembly. This symmetry is explained by the translational displacement along this axis, the optimal functioning of which is favored by a configurational balance with respect to said axis.
- the mobile assembly moves by sliding and is guided in at least one fixed slide relative to the housing.
- the spring indeed has an action on the mobile assembly which could disturb the direction of movement, and consequently the path of the striker, if the guidance resulted from the only effect of magnetic forces on the movement of the core.
- the mobile assembly consists of a magnetic pallet and a superimposed striker. These two elements exercise distinct functions, the pallet or magnetic core must imperatively be made of a magnetic material which is not necessarily the most suitable for the striker, for economic or mechanical reasons depending on the tasks entrusted to it.
- the sliding of the movable magnetic pallet / striker assembly is carried out by guiding said assembly in slides made symmetrically in lateral cheeks disposed fixed in the housing on either side of the magnetic sub-assembly.
- each slide can consist of a wall parallel to the axis of movement of said movable assembly, on either side of which respectively slide tabs projecting laterally from the striker and one face of the magnetic pallet oriented opposite said paws.
- the two components of the mobile assembly therefore participate in guiding in translation.
- the magnetic sub-assembly of the invention in addition to such a coil, preferably comprises a magnetic pallet of trapezoidal shape cooperating with a gap of the cylinder head also of trapezoidal shape.
- the stops of the spring consist of lugs each providing a C-section housing at a part of an end arm of the spring, said C section being heard perpendicular to the direction of movement of the movable assembly. . These stops allow the spring to be positioned while exerting a prestress.
- the spiral portion of the spring is driven by the movable assembly, and the stops of the spring are fixed relative to the housing of the device.
- the central portion of the spring is wound around the top part of a barrel constituting a protuberance of the striker passing through and projecting from an orifice made in the magnetic pallet, a portion of said striker with a percussion surface oriented perpendicular to the movement standing in front of the front edge of said pallet.
- the mechanical relationships, as much with the spring as with the mechanical lock operating the release, are taken care of by the striker.
- the only function of the magnetic pallet is to drive said striker, when it undergoes sufficient Laplace forces to successfully oppose the resistive force of the spring.
- the spring can be fixed to the housing of the device, and the stops of the spring are integral with the mobile assembly.
- FIG. 1 is a schematic representation of the configuration of the invention, with a diagram of the forces present at the stops ;
- - Figure 2 shows a perspective view of the movable assembly with a torsion spring;
- - Figure 3 shows the assembly of the previous figure with the rest of the magnetic yoke;
- - Figure 4 is a top view of the striker cooperating with a torsion spring;
- - Figure 5 shows the cooperation of the movable assembly with a side cheek attached to the housing of the electrical appliance;
- - Figure 6 is a top view of the configuration appearing in the previous figure, with the two side cheeks, and without the magnetic paddle;
- - Figure 7 is a bottom view;
- - Figure 8 shows the part
- the appended figures 2 to 9 represent a version of the invention in which the torsion spring is integral with the movable assembly.
- the torsion spring (1) comprises a coiled central portion (2) and end arms deployed in V (3) and (3 ').
- This spring (1) is driven by the barrel (4) of a mobile assembly comprising on the one hand the striker (5) and on the other hand the core / the magnetic pallet (6).
- Resistance opposed by the spring (1) to the movement of the movable assembly, and in particular of the barrel (4) on the x axis can be calculated as follows:
- the spring (1) exerts, on the stop (7), a force 7 ⁇ .
- FIG. 4 shows, in more detail, the striker (5) which is in the form of a sliding carriage provided with a central shaft (4), legs (11, 11 ') intended to slide in slides (see below), said carriage comprising, at the front in the direction of movement in the event of a short circuit, a protuberance provided with a flat frontal impact surface (12).
- FIG. 5 shows the movable assembly consisting of the pallet (6), the striker (5) and the spring (1), arranged in a situation that is to say located relative to other elements, either of the magnetic assembly, or provided for its immobilization in the housing.
- said movable assembly overcomes the coil (13) of said magnetic sub-assembly, which in fact forms three quarter of a turn produced by a magnetic sheet folded around a core (14) conventionally constituted by a stack of sheets.
- the coil (13) / core (14) assembly is inserted into a lateral cheek (15) which participates in the positioning of a certain number of elements of the circuit breaker.
- the coil (13) and the core (14) are masked by one of the parts (8 ') of the. cylinder head, which is not shown here.
- This second cheek (15 ′) is however shown in FIG. 6, in which almost all of the magnetic sub-assembly, with the exception of the spring (1) and of the upper parts of the mobile assembly, namely the barrel (4 ) and the front protrusion with its percussion surface (12), is hidden.
- their upper part constitutes a window (16) allowing the movement of the mobile assembly, and contributing at least partially to its guidance in the direction of the arrow (F).
- This guidance is achieved, as shown in Figures 5 to 7, by parallel flat walls (17, 17 ') provided under the upper part of the cheeks (15, 15'), with which the side tabs (11, 11 ') of the movable striker (5) can cooperate during sliding.
- a wall of the magnetic pallet (6) opposite said tabs (11, 11 ') slides on the other side of each wall (17, 17'), which can also be provided with gadroons (19, 19 ') of positioning.
- the spring (1) the ends of which (3, 3 ') appear, is surmounted by a sort of cover or cover (18) which covers the upper parts of the cheeks (15, 15').
- This cover (18) which allows a pre-assembly of the spring (1), appears in FIG. 8. It contains the stops (7, 7 ') which determine in particular the prestressing of the torsion spring (1), and therefore allow the adapt to the rating and sensitivity of the circuit breaker.
- the stops (7, 7 ') contain a C-shaped housing for the ends (3, 3') of the spring (1).
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
- Breakers (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Transformers For Measuring Instruments (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0509831-9A BRPI0509831B1 (pt) | 2004-05-06 | 2005-05-06 | "magnetic subcontractor for electric type of circuit breaker" |
CN2005800207256A CN1998058B (zh) | 2004-05-06 | 2005-05-06 | 具有扭矩弹簧的磁性子部件 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04360047A EP1594149B1 (fr) | 2004-05-06 | 2004-05-06 | Sous-ensemble magnétique à ressort de torsion |
EP04360047.7 | 2004-05-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005122202A1 true WO2005122202A1 (fr) | 2005-12-22 |
Family
ID=34931771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2005/001137 WO2005122202A1 (fr) | 2004-05-06 | 2005-05-06 | Sous-ensemble magnetique a ressort de torsion |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1594149B1 (fr) |
CN (1) | CN1998058B (fr) |
AT (1) | ATE415697T1 (fr) |
BR (1) | BRPI0509831B1 (fr) |
DE (1) | DE602004017961D1 (fr) |
ES (1) | ES2318255T3 (fr) |
SI (1) | SI1594149T1 (fr) |
WO (1) | WO2005122202A1 (fr) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3938065A (en) * | 1973-07-31 | 1976-02-10 | Ellenberger & Poensgen Gmbh | Push-button operated bipolar faulty current protective switch |
FR2447601A1 (fr) * | 1979-01-23 | 1980-08-22 | Legrand Sa | Relais d'intensite |
DE19946206A1 (de) * | 1999-09-27 | 2000-11-23 | Siemens Ag | Überstromauslöser |
EP1376639A1 (fr) * | 2002-06-17 | 2004-01-02 | Hager Electro S.A. | Déclencheur électromagnétique à palette mobile selon un déplacement rectiligne |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK1012857T3 (da) * | 1997-09-18 | 2006-03-27 | Eaton Electric Bv | Elektromagnetisk aktuator |
-
2004
- 2004-05-06 EP EP04360047A patent/EP1594149B1/fr not_active Expired - Lifetime
- 2004-05-06 SI SI200431040T patent/SI1594149T1/sl unknown
- 2004-05-06 AT AT04360047T patent/ATE415697T1/de active
- 2004-05-06 DE DE602004017961T patent/DE602004017961D1/de not_active Expired - Lifetime
- 2004-05-06 ES ES04360047T patent/ES2318255T3/es not_active Expired - Lifetime
-
2005
- 2005-05-06 BR BRPI0509831-9A patent/BRPI0509831B1/pt not_active IP Right Cessation
- 2005-05-06 WO PCT/FR2005/001137 patent/WO2005122202A1/fr active Application Filing
- 2005-05-06 CN CN2005800207256A patent/CN1998058B/zh not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3938065A (en) * | 1973-07-31 | 1976-02-10 | Ellenberger & Poensgen Gmbh | Push-button operated bipolar faulty current protective switch |
FR2447601A1 (fr) * | 1979-01-23 | 1980-08-22 | Legrand Sa | Relais d'intensite |
DE19946206A1 (de) * | 1999-09-27 | 2000-11-23 | Siemens Ag | Überstromauslöser |
EP1376639A1 (fr) * | 2002-06-17 | 2004-01-02 | Hager Electro S.A. | Déclencheur électromagnétique à palette mobile selon un déplacement rectiligne |
Also Published As
Publication number | Publication date |
---|---|
CN1998058A (zh) | 2007-07-11 |
CN1998058B (zh) | 2010-11-03 |
DE602004017961D1 (de) | 2009-01-08 |
ES2318255T3 (es) | 2009-05-01 |
SI1594149T1 (sl) | 2009-04-30 |
EP1594149A1 (fr) | 2005-11-09 |
EP1594149B1 (fr) | 2008-11-26 |
BRPI0509831A (pt) | 2007-10-16 |
BRPI0509831B1 (pt) | 2017-11-28 |
ATE415697T1 (de) | 2008-12-15 |
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