EP1105900A1 - Device with axially positionable coil winding - Google Patents
Device with axially positionable coil windingInfo
- Publication number
- EP1105900A1 EP1105900A1 EP99952244A EP99952244A EP1105900A1 EP 1105900 A1 EP1105900 A1 EP 1105900A1 EP 99952244 A EP99952244 A EP 99952244A EP 99952244 A EP99952244 A EP 99952244A EP 1105900 A1 EP1105900 A1 EP 1105900A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coil winding
- coil
- winding
- adjustment ring
- yoke
- 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
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
- H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
- H01H71/7463—Adjusting only the electromagnetic mechanism
Definitions
- the invention relates to an overcurrent release with a U-shaped yoke, a coil winding, a pole and an armature, wherein there is an air gap between the pole and the armature and the coil winding is arranged between the two legs of the yoke.
- a generic device is used for instantaneous overcurrent releases, as are known to be used in circuit breakers for switching and protecting motors and other consumers.
- These instantaneous overcurrent releases are designed as electromagnetic releases, which essentially comprise a coil winding, a coil former, an armature, a pole, a plunger, a retaining spring and a yoke.
- the armature pulls at a certain rated current of the circuit breaker, e.g. at twelve times the rated current with motor protection or at 19 times
- the response current may fluctuate a maximum of ⁇ 20%.
- the difficulty lies in positioning the coil winding to the air gap between the armature and the pole with sufficient accuracy because of the larger support cross-sections required, fewer turns, greater tolerances of the coil and the winding wire and the associated inhomogeneous magnetic magnetic field the response limits according to the standard can be met.
- the coil winding is wound on a coil former.
- the bobbin is provided with a flange on which the winding wire lies.
- the bobbins are usually wound in multiple layers and the last layer is taped with an adhesive tape for fixing. The coils thus form a compact unit while avoiding the problems mentioned above.
- the coils are produced with adjacent winding turns to prevent the coil from contracting and deforming at high short-circuit currents.
- Coil winding After the exact positioning of the coil winding to the air gap between the armature and the pole, one winding end is glued to the coil body flange or yoke to fix the coil winding and the other winding end is welded to a connection.
- the invention has for its object to provide a device with a coil winding, which enables positioning of the coil winding in its axial direction.
- an adjustment ring is provided between the coil winding and one of the two legs of the yoke, which acts as a variable spacer between the coil winding and the yoke, and that by rotating the adjustment ring, the position of the coil winding to the air gap can be changed in the axial direction is.
- the adjustment ring has a surface pointing to the last winding turn and adapted to the pitch of the winding wire of the coil winding. In this way, a large-area support of the coil winding towards the yoke can be achieved. At the same time, the axial displacement of the coil winding is made possible by turning the adjustment ring with little effort.
- the coil winding is arranged on a coil former.
- An unintentional turning back of the adjustment ring is achieved in a simple manner in that the adjustment ring is provided on its inside with teeth which engage in teeth of the coil body.
- a further advantageous embodiment exists if the adjustment ring is provided with external teeth. This enables easy adjustment by hand or by machine through a manufacturing facility.
- FIG. 1 shows an exploded view of an overcurrent release for a circuit breaker
- FIG 2 shows an overcurrent release according to FIG 1 in the assembled state.
- the overcurrent release 1 shows the essential components of an overcurrent release 1 in an exploded view, which is used for circuit breakers for switching and protecting motors and other consumers.
- the overcurrent release 1 is essentially composed of a U-shaped yoke 2, a coil winding 3, a coil body 4, an armature 5, a pole 6 assembled with an associated plunger 7 and an adjustment ring 8.
- the adjustment ring 8 is arranged between the lower leg of the yoke 2 and the coil winding 3. It has a surface 10 which faces the last turn 9 and which is adapted to the winding wire pitch and thus forms a large-area support for the coil winding 3.
- the adjustment ring 8 is provided with teeth (not shown here) which engage teeth on the coil former 4.
- the coil winding 3 can be positioned in the axial direction exactly in relation to the air gap between the armature 5 and the pole 2. Since the adjustment ring 2 acts as a spacer between the coil winding and the yoke 2, the coil winding is thus secured against displacement.
- the internal toothing mentioned prevents the adjustment ring 8 from being inadvertently turned back.
- the adjustment ring 8 is provided on the outer circumference with a toothing 11 which enables easy adjustment by hand or by a machine.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
- Electromagnets (AREA)
Abstract
According to the invention, an adjusting ring (8) with an area (10) adapted to the pitch of the winding wire is inserted into a device having a coil winding (3), wherein the coil winding (3) may be positioned in the axial direction thereof with the aid of said ring.
Description
Beschreibungdescription
Einrichtung mit axial positionierbarer SpulenwicklungDevice with axially positionable coil winding
Die Erfindung bezieht sich auf einen Uberstromauslöser mit einem U-förmigen Joch, einer Spulenwicklung, einem Pol und einem Anker, wobei zwischen dem Pol und dem Anker ein Luftspalt besteht und die Spulenwicklung zwischen den beiden Schenkeln des Jochs angeordnet ist.The invention relates to an overcurrent release with a U-shaped yoke, a coil winding, a pole and an armature, wherein there is an air gap between the pole and the armature and the coil winding is arranged between the two legs of the yoke.
Eine gattungsgemäße Einrichtung wird bei unverzögerten Über- stromauslösern verwendet, wie sie bekannterweise in Leistungsschaltern zum Schalten und Schützen von Motoren und anderen Verbrauchern eingesetzt werden. Diese unverzögerten Uberstromauslöser sind als elektromagnetische Auslöser konzipiert, die im wesentlichen eine Spulenwicklung, einen Spulenkörper, einen Anker, einen Pol, einen Stößel, eine Rückhaltefeder und ein Joch umfassen. Der Anker zieht bei einem bestimmten Bemessungsstrom des Leistungsschalters , z.B. beim zwölffachen Nennstrom bei Motorschutz oder beim 19-fachenA generic device is used for instantaneous overcurrent releases, as are known to be used in circuit breakers for switching and protecting motors and other consumers. These instantaneous overcurrent releases are designed as electromagnetic releases, which essentially comprise a coil winding, a coil former, an armature, a pole, a plunger, a retaining spring and a yoke. The armature pulls at a certain rated current of the circuit breaker, e.g. at twelve times the rated current with motor protection or at 19 times
Nennstrom beim Trafoschutz an. Die Ankerbewegung wirkt dabei auf ein Schaltschloß und auf ein bewegliches Schaltstück, um die Kontakte zu öffnen. Gemäß Norm (IEC60947) darf dabei der Ansprechstrom maximal ±20 % schwanken.Rated current at the transformer protection. The armature movement acts on a switch lock and on a movable contact piece to open the contacts. According to the standard (IEC60947), the response current may fluctuate a maximum of ± 20%.
Bei größeren Einstellbereichen besteht die Schwierigkeit darin, wegen der benötigten größeren Tragquerschnitte, geringeren Windungszahlen, größeren Toleranzen der Spule und des Wickeldrahtes und dem damit verbundenen inhomogeneren magne- tischen Magnetfeld, die Spulenwicklung zum Luftspalt zwischen dem Anker und dem Pol hinreichend genau zu positionieren, damit die Ansprechgrenzen gemäß Norm eingehalten werden können. Außerdem besteht das Problem, die Spulenwicklung in der einmal ermittelten Position zum Luftspalt zu fixieren, damit beim Bemessungsström und bei hohen Kurzschlußströmen keinWith larger setting ranges, the difficulty lies in positioning the coil winding to the air gap between the armature and the pole with sufficient accuracy because of the larger support cross-sections required, fewer turns, greater tolerances of the coil and the winding wire and the associated inhomogeneous magnetic magnetic field the response limits according to the standard can be met. There is also the problem of fixing the coil winding in the position to the air gap once it has been determined, so that none at the rated current and at high short-circuit currents
Verschieben der Spulenwicklung in Richtung Eisenschwerpunkt erfolgt oder sich die Spule zusammenzieht oder verformt und
dadurch die Ansprechgrenzen anschließend nicht mehr eingehalten werden .Moving the coil winding in the direction of the center of gravity takes place or the coil contracts or deforms and as a result, the response limits are then no longer met.
Bei kleineren Schaltleistungen wird die Spulenwicklung auf einem Spulenkörper gewickelt. Am oberen und unteren Ende ist der Spulenkörper mit einem Flansch versehen, an dem der Wickeldraht anliegt. Außerdem werden die Spulenkörper meist mehrlagig bewickelt und die letzte Lage zur Fixierung mit einem Klebeband bandagiert. Somit bilden die Spulen eine ko - pakte Einheit unter Vermeidung der obengenannten Probleme.With smaller switching capacities, the coil winding is wound on a coil former. At the upper and lower end, the bobbin is provided with a flange on which the winding wire lies. In addition, the bobbins are usually wound in multiple layers and the last layer is taped with an adhesive tape for fixing. The coils thus form a compact unit while avoiding the problems mentioned above.
Bei höheren Schaltleistungen werden die Spulen mit anliegenden Wicklungswindungen hergestellt, um zu verhindern, daß bei hohen Kurzschlußströmen sich die Spule zusammenziehen und verformen kann.At higher switching powers, the coils are produced with adjacent winding turns to prevent the coil from contracting and deforming at high short-circuit currents.
Aufgrund der Verwendung einheitlicher Spulenkörper für die jeweilige Baugröße und dessen Auslegung für die geometrisch größte Spulenwicklung, entsteht häufig ein Spalt zwischen dem Spulenkörperflansch oder Joch und der letzten Windung derDue to the use of uniform bobbins for the respective size and its design for the geometrically largest coil winding, there is often a gap between the bobbin flange or yoke and the last turn of the
Spulenwicklung. Nach der genauen Positionierung der Spulenwicklung zum Luftspalt zwischen dem Anker und dem Pol wird zur Fixierung der Spulenwicklung das eine Wicklungsende mit dem Spulenkörperflansch oder Joch verklebt und das andere Wicklungsende mit einem Anschluß verschweißt.Coil winding. After the exact positioning of the coil winding to the air gap between the armature and the pole, one winding end is glued to the coil body flange or yoke to fix the coil winding and the other winding end is welded to a connection.
Der Erfindung liegt die Aufgabe zugrunde, eine Einrichtung mit einer Spulenwicklung zu schaffen, die eine Positionierung der Spulenwicklung in ihrer axialen Richtung ermöglicht.The invention has for its object to provide a device with a coil winding, which enables positioning of the coil winding in its axial direction.
Die Aufgabe wird dadurch gelöst, daß zwischen der Spulenwicklung und einem der beiden Schenkel des Jochs ein Justagering vorgesehen ist, der als variabler Abstandshalter zwischen der Spulenwicklung und dem Joch wirkt, und daß durch Verdrehen des Justagerings die Position der Spulenwicklung zum Luftspalt in axialer Richtung veränderbar ist.
Eine vorteilhafte Weiterbildung der Erfindung besteht, wenn der Justagering eine zur letzten Wicklungswindung zeigende, an die Steigung des Wickeldrahtes der Spulenwicklung angepaßte Fläche aufweist. Auf diese Weise läßt sich eine groß- flächige Abstützung der Spulenwicklung zum Joch hin erreichen. Zugleich wird die axiale Verschiebung der Spulenwicklung durch Verdrehen des Justagerings mit geringem Kraftaufwand ermöglicht.The object is achieved in that an adjustment ring is provided between the coil winding and one of the two legs of the yoke, which acts as a variable spacer between the coil winding and the yoke, and that by rotating the adjustment ring, the position of the coil winding to the air gap can be changed in the axial direction is. An advantageous further development of the invention exists if the adjustment ring has a surface pointing to the last winding turn and adapted to the pitch of the winding wire of the coil winding. In this way, a large-area support of the coil winding towards the yoke can be achieved. At the same time, the axial displacement of the coil winding is made possible by turning the adjustment ring with little effort.
Außerdem ist es vorteilhaft, wenn die Spulenwicklung auf einem Spulenkörper angeordnet ist.It is also advantageous if the coil winding is arranged on a coil former.
Ein unbeabsichtigtes Zurückdrehen des Justagerings wird auf einfache Weise dadurch erreicht, daß der Justagering an sei- ner Innenseite mit Zähnen versehen ist, die in Zähne des Spulenkörpers eingreifen.An unintentional turning back of the adjustment ring is achieved in a simple manner in that the adjustment ring is provided on its inside with teeth which engage in teeth of the coil body.
Eine weitere vorteilhafte Ausprägung besteht, wenn der Justagering mit einer Außenverzahnung versehen ist. Diese ermög- licht ein leichtes Verstellen von Hand oder maschinell durch eine Fertigungseinrichtung.A further advantageous embodiment exists if the adjustment ring is provided with external teeth. This enables easy adjustment by hand or by machine through a manufacturing facility.
Ein Ausführungsbeispiel der Erfindung wird im folgenden anhand einer Zeichnung erläutert. Es zeigen:An embodiment of the invention is explained below with reference to a drawing. Show it:
FIG 1 eine Explosionsdarstellung eines Überstromauslösers für einen Leistungsschalter und1 shows an exploded view of an overcurrent release for a circuit breaker and
FIG 2 einen Uberstromauslöser gemäß FIG 1 im zusammengebauten Zustand.2 shows an overcurrent release according to FIG 1 in the assembled state.
In FIG 1 sind die wesentlichen Komponenten eines Überstromauslösers 1 in einer Explosionsdarstellung gezeigt, der für Leistungsschalter zum Schalten und Schützen von Motoren und anderen Verbrauchern eingesetzt wird. Der Uberstromauslöser 1 ist im wesentlichen aus einem U-förmigen Joch 2, einer Spulenwicklung 3, einem Spulenkörper 4, einem Anker 5, einem Pol
6 mit einem zugehörigen Stößel 7 sowie einem Justagering 8 zusammengesetzt .1 shows the essential components of an overcurrent release 1 in an exploded view, which is used for circuit breakers for switching and protecting motors and other consumers. The overcurrent release 1 is essentially composed of a U-shaped yoke 2, a coil winding 3, a coil body 4, an armature 5, a pole 6 assembled with an associated plunger 7 and an adjustment ring 8.
FIG 2 zeigt den Uberstromauslöser 1 im zusammengebauten Zu- stand, in dem die Spulenwicklung 3 auf dem Spulenkörper 4 aufgefädelt ist, wobei die Spulenwicklung 3 zwischen den beiden Schenkeln des U-förmigen Jochs 2 angeordnet ist und der Spulenkörper 4 durch eine Öffnung im oberen Schenkel des Jochs 2 hindurchragt. Der Anker 5 sowie der Pol 6 befinden sich im Hohlraum des zylinderförmigen Spulenkörpers 4, so daß in FIG 2 lediglich der Stößel 7 unten aus dem Spulenkörper 4 herausragt. Zwischen dem unteren Schenkel des Jochs 2 und der Spulenwicklung 3 ist der Justagering 8 angeordnet. Er besitzt eine zur letzten Windung 9 zeigende, an die Wickeldrahtstei- gung angepaßte Fläche 10 und bildet somit eine großflächige Abstützung der Spulenwicklung 3. An der Innenseite ist der Justagering 8 mit hier nicht dargestellten Zähnen versehen, die in Zähne am Spulenkörper 4 eingreifen. Durch Verdrehen des Justagerings 8 kann die Spulenwicklung 3 genau zum Luft- spalt zwischen dem Anker 5 und dem Pol 2 in axialer Richtung positioniert werden. Da der Justagering 2 als Abstandshalter zwischen der Spulenwicklung und dem Joch 2 wirkt, ist die Spulenwicklung damit gegen Verschieben gesichert. Die genannte Innenverzahnung verhindert dabei ein unbeabsichtigtes Zu- rückdrehen des Justagerings 8. Am äußeren Umfang ist der Justagering 8 mit einer Verzahnung 11 versehen, die ein leichtes Verstellen von Hand oder maschinell durch eine Fertigungseinrichtung ermöglicht.
2 shows the overcurrent release 1 in the assembled state, in which the coil winding 3 is threaded onto the coil former 4, the coil winding 3 being arranged between the two legs of the U-shaped yoke 2 and the coil former 4 through an opening in the upper leg of the yoke 2 protrudes. The armature 5 and the pole 6 are located in the cavity of the cylindrical coil former 4, so that in FIG. 2 only the plunger 7 protrudes from the coil former 4 at the bottom. The adjustment ring 8 is arranged between the lower leg of the yoke 2 and the coil winding 3. It has a surface 10 which faces the last turn 9 and which is adapted to the winding wire pitch and thus forms a large-area support for the coil winding 3. On the inside, the adjustment ring 8 is provided with teeth (not shown here) which engage teeth on the coil former 4. By turning the adjustment ring 8, the coil winding 3 can be positioned in the axial direction exactly in relation to the air gap between the armature 5 and the pole 2. Since the adjustment ring 2 acts as a spacer between the coil winding and the yoke 2, the coil winding is thus secured against displacement. The internal toothing mentioned prevents the adjustment ring 8 from being inadvertently turned back. The adjustment ring 8 is provided on the outer circumference with a toothing 11 which enables easy adjustment by hand or by a machine.
Claims
1. Uberstromauslöser mit einem U-förmigen Joch (2), einer Spulenwicklung (3), einem Pol (6) und einem Anker (5), wobei zwischen dem Pol (6) und dem Anker (5) ein Luftspalt besteht und die Spulenwicklung (3) zwischen den beiden Schenkeln des Jochs (2) angeordnet ist, dadurch gekennzeichnet, daß zwischen der Spulenwicklung (3) und einem der beiden Schenkel des Jochs (2) ein Justagering (8) vorgesehen ist, der als variabler Abstandshalter zwischen der Spulenwicklung (3) und dem Joch (2) wirkt, und daß durch Verdrehen des Justagerings (8) die Position der Spulenwicklung (3) zum Luftspalt in axialer Richtung veränderbar ist.1. Overcurrent release with a U-shaped yoke (2), a coil winding (3), a pole (6) and an armature (5), wherein there is an air gap between the pole (6) and the armature (5) and the coil winding (3) is arranged between the two legs of the yoke (2), characterized in that an adjustment ring (8) is provided between the coil winding (3) and one of the two legs of the yoke (2), which acts as a variable spacer between the coil winding (3) and the yoke (2), and that the position of the coil winding (3) relative to the air gap can be changed in the axial direction by rotating the adjustment ring (8).
2. Uberstromauslöser nach Anspruch 2, d a d u r c h g e k e n n z e i c h n e t , daß der Justagering (8) eine zur letzten Wicklungswindung (9) zeigende, an die Steigung des Wickeldrahts der Spulenwicklung (3) angepaßte Fläche (10) aufweist .2. Overcurrent release according to claim 2, so that the adjustment ring (8) has a surface (10) which is adapted to the pitch of the winding wire of the coil winding (3) and which points to the last winding turn (9).
3. Uberstromauslöser nach Anspruch 1 oder 2, d a d u r c h g e k e n n z e i c h n e t , daß die Spulenwicklung (3) auf einem Spulenkörper (4) angeordnet ist.3. Overcurrent release according to claim 1 or 2, d a d u r c h g e k e n n z e i c h n e t that the coil winding (3) is arranged on a bobbin (4).
4. Uberstromauslöser nach Anspruch 3, d a d u r c h g e k e n n z e i c h n e t , daß der Justagering (8) an seiner Innenseite mit Zähnen versehen ist, die in Zähne des Spulenkörpers (4) eingreifen.4. Overcurrent release according to claim 3, d a d u r c h g e k e n n z e i c h n e t that the adjustment ring (8) is provided on its inside with teeth which engage teeth of the coil body (4).
5. Uberstromauslöser nach einem der vorangehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , daß der Justagering (8) mit einer Außenverzahnung (11) versehen ist.
5. Overcurrent release according to one of the preceding claims, d a d u r c h g e k e n n z e i c h n e t that the adjustment ring (8) is provided with external teeth (11).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19836998 | 1998-08-14 | ||
| DE19836998 | 1998-08-14 | ||
| PCT/DE1999/002372 WO2000010187A1 (en) | 1998-08-14 | 1999-08-03 | Device with axially positionable coil winding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1105900A1 true EP1105900A1 (en) | 2001-06-13 |
| EP1105900B1 EP1105900B1 (en) | 2002-10-30 |
Family
ID=7877609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99952244A Expired - Lifetime EP1105900B1 (en) | 1998-08-14 | 1999-08-03 | Device with axially positionable coil winding |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6300853B1 (en) |
| EP (1) | EP1105900B1 (en) |
| CN (1) | CN1163932C (en) |
| DE (1) | DE59903271D1 (en) |
| WO (1) | WO2000010187A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006033717B4 (en) * | 2006-07-20 | 2009-06-04 | Siemens Ag | Adjustable short-circuit release |
| DE102008012149A1 (en) * | 2008-03-01 | 2009-09-03 | Abb Ag | switchgear |
| CN101986412B (en) * | 2010-11-19 | 2012-11-07 | 常熟开关制造有限公司(原常熟开关厂） | Overload tripping device of breaker |
| CN102005344B (en) * | 2010-11-19 | 2012-12-05 | 常熟开关制造有限公司(原常熟开关厂） | Tripping gear of frame-type breaker |
| EP2544207B1 (en) * | 2011-07-05 | 2017-03-29 | Siemens Aktiengesellschaft | Short circuit trigger with optimised coil connection |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2626713B1 (en) | 1988-01-28 | 1990-06-01 | Merlin Gerin | ELECTROMAGNETIC TRIGGER WITH TRIGGER THRESHOLD ADJUSTMENT |
| US5793026A (en) * | 1997-04-14 | 1998-08-11 | Eaton Corporation | Magnetic trip assembly and circuit breaker incorporating same |
-
1999
- 1999-08-03 DE DE59903271T patent/DE59903271D1/en not_active Expired - Fee Related
- 1999-08-03 EP EP99952244A patent/EP1105900B1/en not_active Expired - Lifetime
- 1999-08-03 US US09/720,471 patent/US6300853B1/en not_active Expired - Fee Related
- 1999-08-03 CN CNB99809661XA patent/CN1163932C/en not_active Expired - Fee Related
- 1999-08-03 WO PCT/DE1999/002372 patent/WO2000010187A1/en active IP Right Grant
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0010187A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2000010187A1 (en) | 2000-02-24 |
| DE59903271D1 (en) | 2002-12-05 |
| US6300853B1 (en) | 2001-10-09 |
| CN1163932C (en) | 2004-08-25 |
| CN1312949A (en) | 2001-09-12 |
| EP1105900B1 (en) | 2002-10-30 |
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