AT205126B - Resistance element - Google Patents

Resistance element

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Publication number
AT205126B
AT205126B AT296258A AT296258A AT205126B AT 205126 B AT205126 B AT 205126B AT 296258 A AT296258 A AT 296258A AT 296258 A AT296258 A AT 296258A AT 205126 B AT205126 B AT 205126B
Authority
AT
Austria
Prior art keywords
resistance element
shafts
elements
resistance
spring pressure
Prior art date
Application number
AT296258A
Other languages
German (de)
Inventor
August Ing Herfert
Original Assignee
Aeg Union Elek Wien
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 Aeg Union Elek Wien filed Critical Aeg Union Elek Wien
Priority to AT296258A priority Critical patent/AT205126B/en
Application granted granted Critical
Publication of AT205126B publication Critical patent/AT205126B/en

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Description

  

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  Widerstandselement 
Für hohe Stromstärken werden bisher mehrere parallel geschaltete Widerstandselemente aus Gusseisen oder Blech in der bekannten flachen Mäanderform verwendet, an deren Ende sich durchbohrte Kontaktaugen befinden, mittels welchen die Elemente auf 2 isolierte Bolzen aufgefädelt werden. Die Parallelschaltung mehrerer Elemente erfolgt über deren Kontaktaugen, welche durch Federdruck aneinandergepresst werden. Da bei schlechtem Kontakt dieser Augen voneinander abweichende Übergangswiderstände entstehen, werden manche Widerstandselemente überlastet, was bis zur Zerstörung führen kann. 



   Die Widerstandselemente der bisherigen Ausführungsform mit sehr grossem flachen Querschnitt und dabei mit grosser Oberfläche auszuführen, scheitert daran, dass die Wellen nicht gehalten werden. Dies ist insbesonders bei Einbru der Widerstandselemente in Fahrzeuge von Bedeutung, wo durch Erschütterungen die nicht unterstützten Wellen des Widerstandselementes in Schwingungen geraten können. 



   Die erfindungsgemässe Lösung vermeidet diese Nachteile, da der Querschnitt bei den erfindungsgemässen Widerstandselementen so gross ausgeführt werden kann, dass sich eine Parallelschaltung von Elementen erübrigt. 



   Gegenstand der Erfindung ist ein Widerstandselement für hohe Stromstärken. Erfindungsgemäss vorgesehen sind breite, bandförmige Wellen, deren Ebenen senkrecht zur Längsachse stehen, wobei die Wellen durch einen in deren Mitte liegenden, isolierten Bolzen getragen und durch Federdruck unter Zwischenlage von Isolierscheiben zusammengepresst werden. 



   Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt. 



   Fig. 1 zeigt einen aus zwei gusseisernen Widerstandselementen bestehenden, in ein an den Längsflächen offenen Gehäuse eingebauten Widerstand in Längsansicht. 



   Fig. 2 zeigt diesen Widerstand in Seitenansicht ohne stirnseitiges Gehäuseblech. 



   1 sind die Widerstandselemente, welche vorteilhaft aus Gusseisen bestehen. In der Mitte der Wellen befinden sich nachträglich eingegossene Löcher, durch welche ein isolierter Eisenbolzen 2 durchgesteckt wird. Der Zwischenraum zwischen den einzelnen Wellen wird durch Metall- 3 und Isolierscheiben 4 ausgefüllt. Jedes Widerstandselement wird durch je eine Feder 5 zusammengespannt, die durch eine Isolerrolle 6 vom Anschlussende des Elementes isoliert wird. Dadurch entsteht ein äusserst stabiles Widerstandselement. Um ein Verdrehen der Widerstandselemente um die Bolzen zu verhindern, sind sie durch die angeschraubten Schaltverbindungen 7 aus Flachkupfer in der richtigen Lage fixiert.

   Ausserdem haben die angeschraubten Schaltverbindungen bzw. die Anschlüsse gegenüber den nur durch Federdruck an die Widerstandselemente gepressten den Vorteil eines sicheren Stromüberganges. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



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  Resistance element
For high currents, several parallel-connected resistance elements made of cast iron or sheet metal in the known flat meander shape have been used, at the end of which there are pierced contact eyes, by means of which the elements are threaded onto 2 insulated bolts. Several elements are connected in parallel via their contact eyes, which are pressed together by spring pressure. Since contact resistances deviating from one another arise when these eyes make poor contact, some resistance elements are overloaded, which can lead to destruction.



   The resistance elements of the previous embodiment with a very large flat cross-section and at the same time with a large surface area fail because the waves are not held. This is particularly important when the resistance elements break into vehicles, where the unsupported waves of the resistance element can vibrate due to vibrations.



   The solution according to the invention avoids these disadvantages, since the cross-section of the resistor elements according to the invention can be made so large that a parallel connection of elements is not necessary.



   The invention relates to a resistance element for high currents. According to the invention, wide, band-shaped shafts are provided, the planes of which are perpendicular to the longitudinal axis, the shafts being supported by an insulated bolt located in the middle and being pressed together by spring pressure with insulating washers in between.



   Embodiments of the invention are shown in the drawings.



   Fig. 1 shows a resistor consisting of two cast iron resistor elements and built into a housing open on the longitudinal surfaces, in a longitudinal view.



   Fig. 2 shows this resistor in a side view without the front housing plate.



   1 are the resistance elements, which are advantageously made of cast iron. In the middle of the shafts there are subsequently cast holes through which an insulated iron bolt 2 is pushed. The space between the individual shafts is filled by metal 3 and 4 insulating washers. Each resistance element is clamped together by a spring 5, which is isolated from the connection end of the element by an insulating roller 6. This creates an extremely stable resistance element. In order to prevent the resistance elements from twisting around the bolts, they are fixed in the correct position by the screwed-on switching connections 7 made of flat copper.

   In addition, the screwed-on switching connections or the connections have the advantage of a reliable current transfer compared to those only pressed against the resistance elements by spring pressure.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT ANSPRUCH : Widerstandselement für hohe Stromstärken, gekennzeichnet durch breite, bandförmige gegossene Wellen (vorzugsweise aus Gusseisen), deren Haupt-Ebenen senkrecht zu der Richtung stehen, in welcher die Wellen des Widerstandselementes aneinandergereiht sind, und dass die Wellen durch einen in deren Mitte <Desc/Clms Page number 2> liegenden isolierten Bolzen getragen und durch Federdruck unter Zwischenlage von Isolierscheiben zusammengepresst werden. PATENT CLAIM: Resistance element for high currents, characterized by wide, band-shaped cast shafts (preferably made of cast iron), the main planes of which are perpendicular to the direction in which the shafts of the resistance element are lined up, and that the waves through one in their center <Desc / Clms Page number 2> horizontally insulated bolts and pressed together by spring pressure with the interposition of insulating washers.
AT296258A 1958-04-24 1958-04-24 Resistance element AT205126B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT296258A AT205126B (en) 1958-04-24 1958-04-24 Resistance element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT296258A AT205126B (en) 1958-04-24 1958-04-24 Resistance element

Publications (1)

Publication Number Publication Date
AT205126B true AT205126B (en) 1959-09-10

Family

ID=3543136

Family Applications (1)

Application Number Title Priority Date Filing Date
AT296258A AT205126B (en) 1958-04-24 1958-04-24 Resistance element

Country Status (1)

Country Link
AT (1) AT205126B (en)

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