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EP0855084B1 - Magnet damping arrangement - Google Patents

Magnet damping arrangement Download PDF

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Publication number
EP0855084B1
EP0855084B1 EP96943861A EP96943861A EP0855084B1 EP 0855084 B1 EP0855084 B1 EP 0855084B1 EP 96943861 A EP96943861 A EP 96943861A EP 96943861 A EP96943861 A EP 96943861A EP 0855084 B1 EP0855084 B1 EP 0855084B1
Authority
EP
European Patent Office
Prior art keywords
magnet
damping
compression spring
yoke
spring
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
Application number
EP96943861A
Other languages
German (de)
French (fr)
Other versions
EP0855084A2 (en
Inventor
Hans Pfab
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP0855084A2 publication Critical patent/EP0855084A2/en
Application granted granted Critical
Publication of EP0855084B1 publication Critical patent/EP0855084B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00Details of electromagnetic relays
    • H01H50/16Magnetic circuit arrangements
    • H01H50/18Movable parts of magnetic circuits, e.g. armature
    • H01H50/30Mechanical arrangements for preventing or damping vibration or shock, e.g. by balancing of armature
    • H01H50/305Mechanical arrangements for preventing or damping vibration or shock, e.g. by balancing of armature damping vibration due to functional movement of armature

Definitions

  • the invention relates to a magnetic damping arrangement for damping a non-switching magnetic yoke of an electromagnetic system with a magnetic coil, especially for a Switching device, e.g. a contactor, the magnetic yoke by means of Spring force is kept damped.
  • a generic magnetic damping arrangement is from the German patent 24 57 608 known.
  • the non-switching Magnetic part is over a bolt over two damping pressure springs pressed towards the bottom of a magnetic chamber. Between the non-switching magnetic part and the floor an insert is inserted into the magnetic chamber.
  • the damping pressure springs are based on the bar on the one hand and on the other on a housing-fixed coil of an electromagnetic Switchgear. Instead of compression springs known to also use leaf springs that hold the magnetic yoke Clamp onto the magnetic chamber floor with a latch.
  • the invention has for its object a magnetic damping arrangement of the above kind to improve that because of a simple structure with possible Few parts, low costs and short assembly times required are. According to the invention, this task solved in that a single for damping the magnetic yoke Damping compression spring provided in a central position to the magnetic yoke is on the one hand on the coil body of the magnet coil and on the other hand supports directly on the magnetic yoke.
  • damping compression spring is designed as a conical spring, as this is compressed Condition only takes up little space in height.
  • the magnetic yoke is advantageously designed in an E-shape and the damping compression spring through the middle leg of the Magnet yoke held.
  • FIG. 1 shows a magnetic damping arrangement in an exploded view shown to which as essential elements damping, non-switching magnetic yoke 1, a coil former 2 with a magnetic coil 3 and coil connections 4, a lower housing part 5, a damping rubber part 6 and a damping compression spring 7 belong.
  • the bobbin 2 is at that Magnetic yoke 3 facing end with bevelled projections 9 provided as the first support elements that for Support and centering of the conical damping pressure spring 7 serve on their larger spring end turn 13.
  • the E-shaped magnetic yoke 1 here is interposed of the strip-shaped damping rubber part 6 on the Housing bottom wall 8 of the lower housing part 6 and is under the spring force of the damping compression spring 7 in the direction of the housing bottom wall 8 pressed. Vibrations of the magnetic yoke 1 through Impact of the movable anchor, not shown here when the electromagnetic system is tightened by the damping pressure spring 7 damped, which with its smaller spring end turn 13 on the inner surface facing the bobbin 2 10 of the magnetic yoke 1 supports. The smaller spring end turn 13 is over the middle leg 11 of the E-shaped Magnet yoke 1 put over and is thereby held and centered. The middle leg 11 of the magnetic yoke 1 is in the composite 2 in a state not shown here, central opening in the coil body 2 form-fitting immersed.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Vibration Prevention Devices (AREA)
  • Electromagnets (AREA)

Description

Die Erfindung bezieht sich auf eine Magnetdämpfungsanordnung zur Dämpfung eines nichtschaltenden Magnetjochs eines Elektromagnetsystems mit einer Magnetspule, insbesondere für ein Schaltgerät, z.B. ein Schütz, wobei das Magnetjoch mittels Federkraft gedämpft gehalten ist.The invention relates to a magnetic damping arrangement for damping a non-switching magnetic yoke of an electromagnetic system with a magnetic coil, especially for a Switching device, e.g. a contactor, the magnetic yoke by means of Spring force is kept damped.

Eine gattungsgemäße Magnetdämpfungsanordnung ist aus der deutschen Patentschrift 24 57 608 bekannt. Der nichtschaltende Magnetteil ist hier über einen Riegel über zwei Dämpfungsdruckfedern in Richtung auf den Boden einer Magnetkammer gedrückt. Zwischen nichtschaltendem Magnetteil und dem Boden der Magnetkammer ist eine Einlage eingelegt. Die Dämpfungsdruckfedern stützen sich einerseits am Riegel und andererseits an einer gehäusefest gehaltenen Spule eines elektromagnetischen Schaltgerätes ab. Anstelle von Druckfedern werden bekannntermaßen auch Blattfedern verwendet, die das Magnetjoch über einen Riegel auf den Magnetkammerboden spannen.A generic magnetic damping arrangement is from the German patent 24 57 608 known. The non-switching Magnetic part is over a bolt over two damping pressure springs pressed towards the bottom of a magnetic chamber. Between the non-switching magnetic part and the floor an insert is inserted into the magnetic chamber. The damping pressure springs are based on the bar on the one hand and on the other on a housing-fixed coil of an electromagnetic Switchgear. Instead of compression springs known to also use leaf springs that hold the magnetic yoke Clamp onto the magnetic chamber floor with a latch.

Mit den Magnetdämpfungsanordnungen werden die Stoß-Schwingungsprozesse, die beim Schließen von Wechselstrommagneten wegen der relativ hohen Schließgeschwindigkeiten auftreten, gedämpft. Diese Schwingungsprozesse, wie man sie von Schützen mit Wechselstrommagneten her kennt, haben Auswirkungen auf die elektrische und die mechanische Lebensdauer der Schütze.With the magnetic damping arrangements, the shock vibration processes, that when closing AC magnets occur because of the relatively high closing speeds subdued. These vibration processes as you can see them from shooters familiar with AC magnets have an impact on the electrical and mechanical life of the contactors.

Der Erfindung liegt die Aufgabe zugrunde, eine Magnetdämpfungsanordnung der obengenannten Art dahingehend zu verbessern, daß aufgrund eines einfachen Aufbaus mit möglichst wenig Teilen nur geringe Kosten entstehen und kurze Montagezeiten erforderlich sind. Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß zur Dämpfung des Magnetjochs eine einzige Dämpfungsdruckfeder in zentraler Lage zum Magnetjoch vorgesehen ist, die sich einerseits am Spulenkörper der Magnetspule und andererseits am Magnetjoch direkt abstützt.The invention has for its object a magnetic damping arrangement of the above kind to improve that because of a simple structure with possible Few parts, low costs and short assembly times required are. According to the invention, this task solved in that a single for damping the magnetic yoke Damping compression spring provided in a central position to the magnetic yoke is on the one hand on the coil body of the magnet coil and on the other hand supports directly on the magnetic yoke.

Vorteilhafte Weiterbildungen der Erfindung sind den Ansprüchen 2 bis 8 zu entnehmen.Advantageous developments of the invention are the claims 2 to 8.

Es erweist sich als vorteilhaft, wenn die Dämpfungsdruckfeder als Kegelfeder ausgebildet ist, da diese im zusammengedrückten Zustand nur wenig Raum in der Höhe beansprucht.It proves to be advantageous if the damping compression spring is designed as a conical spring, as this is compressed Condition only takes up little space in height.

Vorteilhafterweise sind an der einen Stirnseite des Spulenkörpers zur Abstützung und Zentrierung der Dämpfungsdruckfeder dienende erste Halterungselemente vorgesehen.Advantageously, on one end face of the coil body for supporting and centering the damping pressure spring serving first support elements are provided.

Weiterhin ist es vorteilhaft, wenn an der dem Spulenkörper zugewandten Innenfläche des Magnetjochs zweite Halterungselemente zur Abstützung der Dämpfungsdruckfeder vorhanden sind.Furthermore, it is advantageous if on the bobbin facing inner surface of the magnetic yoke second support elements are available to support the damping compression spring.

Vorteilhafterweise ist das Magnetjoch E-förmig ausgebildet und die Dämpfungsdruckfeder durch den mittleren Schenkel des Magnetjochs gehalten.The magnetic yoke is advantageously designed in an E-shape and the damping compression spring through the middle leg of the Magnet yoke held.

Es ist weiterhin von Vorteil, wenn die im Durchmesser größere Federendwindung der Kegelfeder sich am Spulenkörper abstützt und die andere Federendwindung um den mittleren Schenkel des Magnetjochs gelegt ist.It is also advantageous if the diameter is larger Spring end turn of the conical spring is supported on the coil body and the other spring end turn around the middle leg of the Magnet yoke is placed.

Zur weiteren Dämpfung des Magnetjochs ist es zweckmäßig, wenn zwischen dem Magnetjoch und der Gehäusebodenwand ein Dämpfungsgummiteil liegt.To further dampen the magnetic yoke, it is useful if a damping rubber part between the magnetic yoke and the case bottom wall lies.

Ein Ausführungsbeispiel der Erfindung wird im folgenden anhand einer Zeichnung näher erläutert. Es zeigen:

FIG 1
eine Magnetdämpfungsanordnung in Explosionsdarstellung,
FIG 2
eine Magnetdämpfungsanordnung im zusammengesetzten Zustand,
FIG 3
einen Ausschnitt eines Magnetjochs.
An embodiment of the invention is explained below with reference to a drawing. Show it:
FIG. 1
a magnetic damping arrangement in an exploded view,
FIG 2
a magnetic damping arrangement in the assembled state,
FIG 3
a section of a magnetic yoke.

In FIG 1 ist eine Magnetdämpfungsanordnung in Explosionsdarstellung gezeigt, zu der als wesentliche Elemente ein zu dämpfendes, nichtschaltendes Magnetjoch 1, ein Spulenkörper 2 mit einer Magnetspule 3 und Spulenanschlüssen 4, ein Gehäuseunterteil 5, ein Dämpfungsgummiteil 6 und eine Dämpfungsdruckfeder 7 gehören. Der Spulenkörper 2 ist an seiner dem Magnetjoch 3 zugewandten Stirnseite mit abgeschrägten Vorsprüngen 9 als ersten Halterungselementen versehen, die zur Abstützung und Zentrierung der kegelförmigen Dämpfungsdruckfeder 7 an ihrer größeren Federendwindung 13 dienen.1 shows a magnetic damping arrangement in an exploded view shown to which as essential elements damping, non-switching magnetic yoke 1, a coil former 2 with a magnetic coil 3 and coil connections 4, a lower housing part 5, a damping rubber part 6 and a damping compression spring 7 belong. The bobbin 2 is at that Magnetic yoke 3 facing end with bevelled projections 9 provided as the first support elements that for Support and centering of the conical damping pressure spring 7 serve on their larger spring end turn 13.

Das hier E-förmig ausgebildete Magnetjoch 1 liegt unter Zwischenlage des streifenförmigen Dämpfungsgummiteils 6 an der Gehäusebodenwand 8 des Gehäuseunterteils 6 auf und wird unter der Federkraft der Dämpfungsdruckfeder 7 in Richtung Gehäusebodenwand 8 gedrückt. Erschütterungen des Magnetjochs 1 durch Aufschlag des hier nicht dargestellten beweglichen Ankers beim Anzug des Elektromagnetsystems werden durch die Dämpfungsdruckfeder 7 gedämpft, die sich mit ihrer kleineren Federendwindung 13 an der dem Spulenkörper 2 zugewandten Innenfläche 10 des Magnetjochs 1 abstützt. Die kleinere Federendwindung 13 ist über den mittleren Schenkel 11 des E-förmigen Magnetjochs 1 gestülpt und wird hierdurch gehalten und zentriert. Der mittlere Schenkel 11 des Magnetjochs 1 ist im zusammengesetzten Zustand nach FIG 2 in eine hier nicht dargestellte, zentralliegende Öffnung im Spulenkörper 2 formschlüssig eingetaucht.The E-shaped magnetic yoke 1 here is interposed of the strip-shaped damping rubber part 6 on the Housing bottom wall 8 of the lower housing part 6 and is under the spring force of the damping compression spring 7 in the direction of the housing bottom wall 8 pressed. Vibrations of the magnetic yoke 1 through Impact of the movable anchor, not shown here when the electromagnetic system is tightened by the damping pressure spring 7 damped, which with its smaller spring end turn 13 on the inner surface facing the bobbin 2 10 of the magnetic yoke 1 supports. The smaller spring end turn 13 is over the middle leg 11 of the E-shaped Magnet yoke 1 put over and is thereby held and centered. The middle leg 11 of the magnetic yoke 1 is in the composite 2 in a state not shown here, central opening in the coil body 2 form-fitting immersed.

Alternativ sind auch andere Lösungen zur Abstützung der Dämpfungsdruckfeder 7 am Magnetjoch 1 denkbar. Zum Beispiel könnte in die Innenfläche 10 des Magnetjochs 1 eine Kreisnut 12 als zweites Halterungselement gemäß FIG 3 zur Aufnahme der kleineren Federendwindung 13 der Dämpfungsdruckfeder 7 eingefräst sein.Alternatively, there are also other solutions for supporting the damping compression spring 7 conceivable on the magnetic yoke 1. For example a circular groove 12 into the inner surface 10 of the magnetic yoke 1 as a second mounting element according to FIG 3 for receiving the smaller spring end turn 13 of the damping compression spring 7 milled be.

Abwandlungen durch andersartige Halterungselemente für die Dämpfungsdruckfeder 7 sind selbstverständlich möglich, ohne den erfinderischen Charakter der direkten Abstützung nur einer einzigen Dämfpungsdruckfeder 7 am Spulenkörper 2 einerseits und am Magnetjoch 1 andererseits zu verändern.Variations through different types of mounting elements for the Damping compression spring 7 are of course possible without the inventive character of direct support only a single damping compression spring 7 on the bobbin 2 on the one hand and to change the magnetic yoke 1 on the other hand.

Claims (8)

  1. Magnet damping arrangement for damping a non-switching magnet yoke (1) of an electromagnet system having a magnet coil (3), in particular for a switching device, for example a contactor, with the magnet yoke (1) being held in a damped manner by means of spring force, characterised in that in order to damp the magnet yoke (1), there is provided a single damping compression spring (7) in a central position with respect to the magnet yoke (1), which compression spring is supported on the coil former (2) of the magnet coil (3) on the one hand and, on the other hand, is supported directly on the magnet yoke (1).
  2. Magnet damping arrangement according to claim 1, characterised in that the damping compression spring is constructed as a conical spiral spring (7).
  3. Magnet damping arrangement according to claim 1 or 2, characterised in that provided on the one end face of the coil former (2) are first holding elements (9) which serve to support and centre the damping compression spring (7).
  4. Magnet damping arrangement according to one of the preceding claims, characterised in that on the inner face (10) of the magnet yoke (1) that faces the coil former (2) are second holding elements (12) for supporting the damping compression spring (7).
  5. Magnet damping arrangement according to one of the preceding claims, characterised that the magnet yoke (1) is constructed so as to be E-shaped, and in that the damping compression spring (7) is held by the centre limb (11) of the magnet yoke (1).
  6. Magnet damping arrangement according to claim 2, characterised in that the spring end turn (13) of the conical spiral spring (7) that is larger in terms of diameter is supported on the coil former (2) and the other spring end turn (13) is placed around the centre limb (11) of the magnet yoke (1).
  7. Magnet damping arrangement according to one of the preceding claims, characterised in that the damping compression spring (7) presses the magnet yoke (1) directly against a base wall (8) of a housing.
  8. Magnet damping arrangement according to claim 7, characterised in that between the magnet yoke (1) and the base wall (8) of the housing is a rubber damping portion (6).
EP96943861A 1995-10-12 1996-10-02 Magnet damping arrangement Expired - Lifetime EP0855084B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19538056 1995-10-12
DE19538056 1995-10-12
PCT/DE1996/001901 WO1997014165A2 (en) 1995-10-12 1996-10-02 Magnet damping arrangement

Publications (2)

Publication Number Publication Date
EP0855084A2 EP0855084A2 (en) 1998-07-29
EP0855084B1 true EP0855084B1 (en) 1999-04-28

Family

ID=7774691

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96943861A Expired - Lifetime EP0855084B1 (en) 1995-10-12 1996-10-02 Magnet damping arrangement

Country Status (5)

Country Link
US (1) US6037852A (en)
EP (1) EP0855084B1 (en)
CN (1) CN1064174C (en)
DE (1) DE59601790D1 (en)
WO (1) WO1997014165A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011009694A1 (en) 2009-07-22 2011-01-27 Siemens Aktiengesellschaft Switchgear having a damper arrangement
DE102009034611A1 (en) 2009-07-27 2011-02-03 Siemens Aktiengesellschaft Switching device with damping arrangement

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19919122A1 (en) * 1999-04-27 2000-11-02 Iro Patent Ag Baar Actuator and thread brake with one actuator
JP5029731B2 (en) * 2010-07-08 2012-09-19 富士電機機器制御株式会社 Magnetic contactor
JP5622808B2 (en) * 2012-07-31 2014-11-12 日本電産コパル株式会社 Vibration actuator
DE102014214950A1 (en) * 2014-07-30 2016-02-04 Siemens Aktiengesellschaft Switching device with reduced switching noise
CN205376416U (en) * 2015-12-09 2016-07-06 浙江正泰电器股份有限公司 AC (alternating current) contactor
JP6864579B2 (en) * 2017-08-03 2021-04-28 株式会社日立製作所 Contactor

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2920254A (en) * 1957-07-18 1960-01-05 Gen Controls Co Solenoid device for use with gas valves
US3013768A (en) * 1959-12-03 1961-12-19 Valcor Eng Corp Solenoid and plunger
GB1368248A (en) * 1970-12-08 1974-09-25 Lucas Industries Ltd Solenoid for use in an engine starter mechanism
DE4123369A1 (en) * 1991-07-15 1993-04-08 Oppach Schaltelektronik EM switching unit with contact bounce prevention - has bridging compact mounted on elastic pad relative to armature supported on core with elastic mount
DE4203803C2 (en) * 1992-02-10 1997-04-17 Siemens Ag Contactor
JP3324145B2 (en) * 1992-07-31 2002-09-17 株式会社デンソー magnetic switch
JPH07182961A (en) * 1993-12-22 1995-07-21 Fuji Electric Co Ltd Electromagnetic contactor iron core holding structure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011009694A1 (en) 2009-07-22 2011-01-27 Siemens Aktiengesellschaft Switchgear having a damper arrangement
DE102009034247A1 (en) 2009-07-22 2011-03-03 Siemens Aktiengesellschaft Switching device with damping arrangement
DE102009034247B4 (en) * 2009-07-22 2015-02-12 Siemens Aktiengesellschaft Switching device with damping arrangement
DE102009034611A1 (en) 2009-07-27 2011-02-03 Siemens Aktiengesellschaft Switching device with damping arrangement

Also Published As

Publication number Publication date
CN1196822A (en) 1998-10-21
CN1064174C (en) 2001-04-04
WO1997014165A3 (en) 1997-10-30
WO1997014165A2 (en) 1997-04-17
US6037852A (en) 2000-03-14
EP0855084A2 (en) 1998-07-29
DE59601790D1 (en) 1999-06-02

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