DEP0049522DA - Electromagnetic relay - Google Patents
Electromagnetic relayInfo
- Publication number
- DEP0049522DA DEP0049522DA DEP0049522DA DE P0049522D A DEP0049522D A DE P0049522DA DE P0049522D A DEP0049522D A DE P0049522DA
- Authority
- DE
- Germany
- Prior art keywords
- armature
- stop
- magnetic
- cont
- electromagnetic relay
- 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
Links
- 125000006850 spacer group Chemical group 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
Description
Elektromagnetische Relais haben häufig die Eigenschaft während des Spannungsanstieges ihren Anker schleichend anzuziehen, da mit abnehmendem Ankerluftspalt die Abzug-oder Kontaktfederkraft zunimmt. Dies hat u.a. den Nachteil, daß im kritischen Spannungsbereich die Relaiskontakte verhältnismässig langsam öffnen bezw. schliessen und dass dabei eine unerwünschte Funkenbildung auftritt.Electromagnetic relays often have the property of gradually attracting their armature during the voltage rise, since the withdrawal or contact spring force increases as the armature air gap decreases. Among other things, this has the disadvantage that in the critical voltage range the relay contacts open relatively slowly or. close and that undesirable sparking occurs.
Gemäß vorliegender Erfindung wird dieser Nachteil dadurch beseitigt, dass der abgefallene Anker A, wie in der Abbildung veranschaulicht, sich gen einen derart ausgebildeten Anschlag, S stützt, der mit dem Polschuh P in magnetischer Verbindung steht, (dass infolge der Ausbildung eines zunächst stärker wirkenden magnetischen Gegenfeldes erst beim Erreichen einer gewissen Mindestspannung der Anker beschleunigt angezogen wird.) Zweckmäßig ist der Anschlag S als Eisenschraube ausgebildet, die mit ihrem Schaft durch eine im anker A -befindliche Bohrung greift und in den Magnetkern K der Spule W hineingeschraubt ist. Der Anker würde sich dabei gegen den Zylinderkopf abstützen und bei genügendem Durchmesser der Bohrung im Anzug nicht behindert werden. Durch die Auswahl der Stärke einer dünnen eingefügten unmagnetischen Distanz-Scheibe oder durch die Ausbildung einer kurzen Nase N am Kopf der Schraube kann die Anzugsspannung in weiteren Grenzen festgelegt werden.According to the present invention, this disadvantage is eliminated in that the fallen armature A, as illustrated in the figure, is supported against a stop S designed in this way, which is in magnetic connection with the pole piece P (that as a result of the formation of an initially stronger acting Magnetic opposing field only attracts the armature accelerated when a certain minimum voltage is reached.) Appropriately, the stop S is designed as an iron screw, the shaft of which engages through a hole in the armature A and is screwed into the magnetic core K of the coil W. The armature would be supported against the cylinder head and would not be hindered in the tightening given a sufficient diameter of the bore. By selecting the thickness of a thin inserted non-magnetic spacer washer or by forming a short nose N on the head of the screw, the tightening voltage can be set within wider limits.
Claims (4)
Family
ID=
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