EP1105900B1 - Device with axially positionable coil winding - Google Patents
Device with axially positionable coil winding Download PDFInfo
- Publication number
- EP1105900B1 EP1105900B1 EP99952244A EP99952244A EP1105900B1 EP 1105900 B1 EP1105900 B1 EP 1105900B1 EP 99952244 A EP99952244 A EP 99952244A EP 99952244 A EP99952244 A EP 99952244A EP 1105900 B1 EP1105900 B1 EP 1105900B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coil winding
- coil
- winding
- yoke
- overcurrent release
- 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.)
- Expired - Lifetime
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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 a U-shaped yoke, a coil winding, a pole and an armature, with an air gap between the pole and the armature exists and the coil winding between the two Legs of the yoke is arranged.
- an overcurrent release is described for example in EP-A-0 326 449.
- a generic device is used for instantaneous overcurrent releases used as known in circuit breakers for switching and protecting motors and others Consumers.
- These undelayed Overcurrent releases are designed as electromagnetic releases, which is essentially a coil winding, a coil former, an anchor, a pole, a plunger, a retaining spring and include a yoke.
- the anchor pulls at a certain one Rated current of the circuit breaker, e.g. at the twelve times the rated current for motor protection or 19 times Rated current at the transformer protection.
- the anchor movement works on a key switch and on a moving contact to open the contacts. According to the standard (IEC60947) the Response current fluctuate by a maximum of ⁇ 20%.
- the coil winding is opened a bobbin wound.
- the bobbin is provided with a flange on which the Winding wire is present.
- the bobbins are mostly multi-layer wrapped and the last layer for fixation with one Adhesive tape bandaged.
- the coils form a compact one Unity avoiding the above problems.
- the coils are attached Windings made to prevent high short-circuit currents pull the coil together and can deform.
- the invention has for its object a device with a coil winding to create a positioning allows the coil winding in its axial direction.
- the object is achieved in that between the coil winding and one of the two legs of the yoke an adjustment ring is provided as a variable spacer between the Coil winding and the yoke acts, and that by twisting the adjustment ring the position of the coil winding to the air gap is changeable in the axial direction.
- adjustment ring is provided with an external toothing. This enables easy adjustment by hand or by machine a manufacturing facility.
- the overcurrent release 1 shows the essential components of an overcurrent release 1 is shown in an exploded view for Circuit breakers for switching and protecting motors and other consumers.
- the overcurrent release 1 is essentially a U-shaped yoke 2, a coil winding 3, a coil former 4, an armature 5, a pole 6 with an associated plunger 7 and an adjustment ring 8 composed.
- the overcurrent release 1 in the assembled state in which the coil winding 3 on the coil former 4th is threaded, the coil winding 3 between the two legs of the U-shaped yoke 2 is arranged and the bobbin 4 through an opening in the upper leg of the Jokes 2 protrude through.
- the armature 5 and the pole 6 are located itself in the cavity of the cylindrical bobbin 4, so that in FIG. 2, only the plunger 7 from the coil body 4 at the bottom protrudes.
- the adjustment ring 8 is arranged between the lower leg of the yoke 2 and the Coil winding 3. He owns one pointing to the last turn 9, to the winding wire pitch adapted area 10 and thus forms a large area Support of the coil winding 3.
- Adjustment ring 8 On the inside is the Adjustment ring 8 provided with teeth, not shown here, which engage teeth on the bobbin 4.
- teeth By twisting of the adjustment ring 8 can the coil winding 3 exactly to the air gap between the armature 5 and the pole 2 in the axial direction be positioned.
- the adjustment ring 2 as a spacer acts between the coil winding and the yoke 2 is the The coil winding is thus secured against shifting.
- the said Internal teeth prevent unintentional turning back of the adjustment ring 8.
- the outer circumference is the Adjustment ring 8 provided with a toothing 11, the one easy adjustment by hand or by machine through a manufacturing facility allows.
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
- Electromagnets (AREA)
Description
Die Erfindung bezieht sich auf einen Überstromauslöser 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. Ein solcher Überstromauslöser ist zum Beispiel in EP-A-0 326 449 beschrieben.The invention relates to an overcurrent release a U-shaped yoke, a coil winding, a pole and an armature, with an air gap between the pole and the armature exists and the coil winding between the two Legs of the yoke is arranged. Such an overcurrent release is described for example in EP-A-0 326 449.
Eine gattungsgemäße Einrichtung wird bei unverzögerten Überstromauslösern verwendet, wie sie bekannterweise in Leistungsschaltern zum Schalten und Schützen von Motoren und anderen Verbrauchern eingesetzt werden. Diese unverzögerten Überstromauslöser 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-fachen 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.A generic device is used for instantaneous overcurrent releases used as known in circuit breakers for switching and protecting motors and others Consumers. These undelayed Overcurrent releases are designed as electromagnetic releases, which is essentially a coil winding, a coil former, an anchor, a pole, a plunger, a retaining spring and include a yoke. The anchor pulls at a certain one Rated current of the circuit breaker, e.g. at the twelve times the rated current for motor protection or 19 times Rated current at the transformer protection. The anchor movement works on a key switch and on a moving contact to open the contacts. According to the standard (IEC60947) the Response current fluctuate by 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 magnetischen 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 Bemessungsstrom und bei hohen Kurzschlußströmen kein Verschieben der Spulenwicklung in Richtung Eisenschwerpunkt erfolgt oder sich die Spule zusammenzieht oder verformt und dadurch die Ansprechgrenzen anschließend nicht mehr eingehalten werden.The difficulty exists with larger setting ranges in it, because of the larger support cross-sections required, less Number of turns, larger tolerances of the coil and Winding wire and the associated inhomogeneous magnetic Magnetic field, the coil winding to the air gap between to position the anchor and the pole with sufficient accuracy so that the response limits according to the standard can be met. There is also the problem of the coil winding at once fix determined position to the air gap, so none at rated current and at high short-circuit currents Moving the coil winding towards the iron center of gravity occurs or the coil contracts or deforms and as a result, the response limits are then no longer met become.
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 kompakte Einheit unter Vermeidung der obengenannten Probleme.With smaller switching capacities, the coil winding is opened a bobbin wound. At the top and bottom is the bobbin is provided with a flange on which the Winding wire is present. In addition, the bobbins are mostly multi-layer wrapped and the last layer for fixation with one Adhesive tape bandaged. Thus, the coils form a compact one Unity avoiding the above problems.
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 attached Windings made to prevent high short-circuit currents pull the coil together and can deform.
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 der 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.Due to the use of uniform bobbins for the respective size and its design for the geometric largest coil winding, there is often a gap between the Bobbin flange or yoke and the last turn of the Coil winding. After the exact positioning of the coil winding becomes the air gap between the armature and the pole to fix the coil winding with one end of the winding glued to the bobbin flange or yoke and the other The end of the winding 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 a device with a coil winding to create a positioning allows 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. The object is achieved in that between the coil winding and one of the two legs of the yoke an adjustment ring is provided as a variable spacer between the Coil winding and the yoke acts, and that by twisting the adjustment ring the position of the coil winding to the air gap is changeable in the axial direction.
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 großflächige Abstützung der Spulenwicklung zum Joch hin erreichen. Zugleich wird die axiale Verschiebung der Spulenwicklung durch Verdrehen des Justagerings mit geringem Kraftaufwand ermöglicht.An advantageous development of the invention exists if the adjustment ring is one pointing towards the last winding turn, adapted to the slope of the winding wire of the coil winding Has area. In this way, a large area Reach support of the coil winding towards the yoke. At the same time, the axial displacement of the coil winding by turning the adjustment ring with little effort allows.
Außerdem ist es vorteilhaft, wenn die Spulenwicklung auf einem Spulenkörper angeordnet ist.It is also advantageous if the coil winding on one Coil body is arranged.
Ein unbeabsichtigtes Zurückdrehen des Justagerings wird auf einfache Weise dadurch erreicht, daß der Justagering an seiner Innenseite mit Zähnen versehen ist, die in Zähne des Spulenkörpers eingreifen.An unintentional turning back of the adjustment ring opens easily achieved in that the adjustment ring on his Inside is provided with teeth that are in teeth of the Engage the bobbin.
Eine weitere vorteilhafte Ausprägung besteht, wenn der Justagering mit einer Außenverzahnung versehen ist. Diese ermöglicht ein leichtes Verstellen von Hand oder maschinell durch eine Fertigungseinrichtung.Another advantageous feature is when the adjustment ring is provided with an external toothing. This enables easy adjustment by hand or by machine a manufacturing facility.
Ein Ausführungsbeispiel der Erfindung wird im folgenden anhand einer Zeichnung erläutert. Es zeigen:
- FIG 1
- eine Explosionsdarstellung eines Überstromauslösers für einen Leistungsschalter und
- FIG 2
- einen Überstromauslöser gemäß FIG 1 im zusammengebauten Zustand.
- FIG. 1
- an exploded view of an overcurrent release for a circuit breaker and
- FIG 2
- 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 Überstromauslöser 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
FIG 2 zeigt den Überstromauslöser 1 im zusammengebauten Zustand,
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 Wickeldrahtsteigung
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 Luftspalt
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 Zurückdrehen
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
Claims (5)
- Overcurrent release with a U-shaped yoke (2), a coil winding (3), a pole (6) and an armature (5), whereby an air gap exits between the pole (6) and the armature (6), and the coil winding (3) is arranged between the two limbs of the yoke (2), characterised in that an adjusting ring (8) is provided between the coil winding (3) and one of the two limbs of the yoke (2), acting as a variable spacer between the coil winding (3) and the yoke (2), and that the position of the coil winding (3) with respect to the air gap can be varied in an axial direction by twisting the adjusting ring (8).
- Overcurrent release according to Claim 2, characterised in that the adjusting ring (8) includes a surface (10) which faces the last winding turn (9) and which is matched to the pitch of the winding wire of the coil winding (3).
- Overcurrent release according to Claim 1 or 2, characterised in that the coil winding (3) is arranged on a coil former (4).
- Overcurrent release according to Claim 3, characterised in that an inner surface of the adjusting ring (8) includes teeth which engage with teeth on the coil former (4).
- Overcurrent release according to one of the preceding claims, characterised in that the adjusting ring (8) includes an external tooth system (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 EP1105900A1 (en) | 2001-06-13 |
| EP1105900B1 true 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006033717A1 (en) * | 2006-07-20 | 2008-01-31 | Siemens Ag | Adjustable short-circuit release |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 CN CNB99809661XA patent/CN1163932C/en not_active Expired - Fee Related
- 1999-08-03 EP EP99952244A patent/EP1105900B1/en not_active Expired - Lifetime
- 1999-08-03 DE DE59903271T patent/DE59903271D1/en not_active Expired - Fee Related
- 1999-08-03 US US09/720,471 patent/US6300853B1/en not_active Expired - Fee Related
- 1999-08-03 WO PCT/DE1999/002372 patent/WO2000010187A1/en active IP Right Grant
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006033717A1 (en) * | 2006-07-20 | 2008-01-31 | Siemens Ag | Adjustable short-circuit release |
| DE102006033717B4 (en) * | 2006-07-20 | 2009-06-04 | Siemens Ag | Adjustable short-circuit release |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1105900A1 (en) | 2001-06-13 |
| WO2000010187A1 (en) | 2000-02-24 |
| US6300853B1 (en) | 2001-10-09 |
| DE59903271D1 (en) | 2002-12-05 |
| CN1163932C (en) | 2004-08-25 |
| CN1312949A (en) | 2001-09-12 |
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