DE333437C - Process for the production of plates or curved surfaces made of metal attached to a common carrier, in particular for rotary plate capacitors - Google Patents

Process for the production of plates or curved surfaces made of metal attached to a common carrier, in particular for rotary plate capacitors

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Publication number
DE333437C
DE333437C DE1917333437D DE333437DD DE333437C DE 333437 C DE333437 C DE 333437C DE 1917333437 D DE1917333437 D DE 1917333437D DE 333437D D DE333437D D DE 333437DD DE 333437 C DE333437 C DE 333437C
Authority
DE
Germany
Prior art keywords
plates
production
rotary plate
curved surfaces
plate capacitors
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
Application number
DE1917333437D
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German (de)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of DE333437C publication Critical patent/DE333437C/en
Expired legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G5/00Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture
    • H01G5/04Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture using variation of effective area of electrode
    • H01G5/06Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture using variation of effective area of electrode due to rotation of flat or substantially flat electrodes

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Description

Verfahren zur Herstellung von an einem gemeinsamen Träger befestigten Platten oder gekrümmten Flächen aus bfetall, insbesondere für Drehplattenkondensatoren. Es ist bekannt, bei elektrischen Drehplattenkondensatoren die Platten mitsamt ihrem Träger in einem Stück aus Spritzguß herzustellen. Dieses Verfahren gewährt den Vorteil, auf kleine Plattenstärken und kleine Plattenabstände herunterzugehen, solange die Abmessungen der Platten eine gewisse Größe nicht überschreiten. Ist dies jedoch der Fall, so macht das Spritzgußverfahren Schwierigkeiten, wenn man nicht wieder zu größeren Plattenstärken übergehen will. Alsdann müssen die Platten besonders hergestellt und einzeln in den Träger eingesetzt werden. Die Herstellung unbedingt ebener Platten erfordert größte Sorgfalt; bei nicht genügender Dicke werfen sie sich bei Temperaturunterschieden und bei Drehkondensatoren entsteht die Gefahr, daß sich drehbares und festes Plattensystem bei geringem Abstand berühren.Process for the manufacture of fastened to a common carrier Plates or curved surfaces made of bfetall, especially for rotary plate capacitors. It is known that in electrical rotary plate capacitors, the plates together with their Manufacture carrier in one piece from injection molding. This procedure grants the advantage to go down to small plate thicknesses and small plate spacings, as long as the Dimensions of the panels do not exceed a certain size. However, it is the case, the injection molding process makes difficulties if one does not return wants to move to larger plate thicknesses. Then the plates have to be special can be produced and inserted individually into the carrier. The production is essential flat plates require the greatest care; if they are not thick enough, they throw temperature differences and variable capacitors pose the risk of that the rotating and fixed plate system touch each other at a small distance.

Es ist auch bereits vorgeschlagen worden, Platten aus dünnem Blech zu stanzen und durch einen aus Spritzguß gebildeten Träger miteinander zu vereinigen. Dieses Verfahren hat folgende Nachteile: Die Herstellung einzelner dünner Blechplatten ist sehr schwierig. Die Platten besitzen bei größerem Durchmesser keine genügende Festigkeit, selbst wenn Muster eingepreßt sind. Bei Erschütterungen des Kondensators besteht daher die Gefahr, daß die Platten in Schwingungen geraten, wodurch eine Berührung der Platten untereinander und eine Veränderung der Kapazität eintritt.It has also already been proposed to use sheets of thin sheet metal to punch and to unite with one another by a carrier formed from injection molding. This method has the following disadvantages: The production of individual thin sheet metal plates is very difficult. If the diameter is larger, the plates are insufficient Strength even when patterns are pressed in. If the capacitor vibrates there is therefore a risk that the plates start to vibrate, causing a Contact of the plates with each other and a change in capacity occurs.

Bei Temperaturunterschieden werfen sich dünne Platten leicht, wodurch dieselben Folgen hervorgerufen werden, wie durch die Schwingungen der Platten.With temperature differences, thin plates throw themselves easily, which the same consequences are caused as by the vibrations of the plates.

Schließlich treten infolge der Verwendung verschiedener Materialien für Platten und Träger unerwünschte elektrolytische Erscheinungen ein.Eventually occur as a result of the use of different materials undesirable electrolytic phenomena for plates and carriers.

Vorliegende Erfindung ermöglicht die Beibehaltung der beiden Vorteile: Geringe Plattendicke- und geringer Plattenabstand auch bei großen Plattendimensionen. Sie besteht darin, daß die Platten aus dem gleichen Metall oder Metallegierung wie der Träger und ebenso wie dieser im Spritzguß hergestellt und bei der Herstellung des Trägers in letzteren eingesetzt werden. Durch die Herstellung der Platten aus Spritzguß läßt sich auf einfache Weise große Genauigkeit in der Ebenheit der Platten erreichen; jede Bearbeitung, wie Hämmern, Richten, Walzen, Fräsen, fällt weg und damit jede Spannung, die infolge der Bearbeitung in die Platten hineinkommt und bei Temperaturunterschieden Dehnungen und Werfen hervorruft. Dadurch, daß Platten und Plattenträger aus genau dem gleichen Metall (oder Metalllegierung) bestehen, werden Dehnungen und Werfen infolge ungleichen Ausdehnungskoeffizienten ausgeschaltet. Das Einsetzen der Platten in den Träger während seiner Herstellung aus Spritzguß vermeidet wieder das Fräsen von Nuten und sonstige Bearbeitung, die die gleichen nachteiligen Folgen wie oben bei der Plattenherstellung haben könnte, und gewährleistet eine feste Verbindung zwischen Träger und Platten.The present invention enables the two advantages to be retained: Small panel thickness and small panel spacing, even with large panel dimensions. It consists in that the plates are made of the same metal or metal alloy as the carrier and just like this manufactured by injection molding and during manufacture of the carrier can be used in the latter. By making the panels from Injection molding can be easily made with great accuracy in the flatness of the panels reach; any processing such as hammering, straightening, rolling, milling is eliminated and so that any tension that comes into the plates as a result of the machining and causes stretching and throwing in the event of temperature differences. By having plates and plate carriers are made of exactly the same metal (or metal alloy), stretching and throwing due to unequal expansion coefficients are eliminated. The insertion of the panels into the carrier during its manufacture from injection molding again avoids the milling of grooves and other machining that is the same could have adverse consequences as above with the plate production, and guaranteed a solid connection between the beam and the panels.

Das Verfahren ist nicht nur bei elektrischen Kondensatoren, sondern überall da von Vorteil, wo Platten oder gekrümmte Flächen unbedingt gleich bleibenden Abstand .haben sollen.The procedure isn't just electrical Capacitors, It is an advantage wherever plates or curved surfaces are absolutely the same should have a permanent distance.

Claims (1)

PATENT-ANSPRUcH: ., -Verfahren zur Herstellung von an einem gemeinsamen Träger befestigten Platten oder gekriimmten' Flächen aus Metall, insbesondere für Drehplattenkondensatoren, dadurch gekennzeichnet, daß die Platten oder die Körper mit gekrümmter Fläche für sich in Spritzgußhergestellt und in ihren Trägerwährend dessen Herstellung in SpritzguB eingesetzt werden, wobei die Platten oder die Körper einerseits und der Träger anderseits aus dem gleichen Metall oder aus der gleichen Metallegierung bestehen.PATENT CLAIM:., -Process for the production of a joint Supported plates or curved 'surfaces made of metal, especially for Rotary plate capacitors, characterized in that the plates or the bodies with a curved surface are injection molded on their own and while they are in their supports Its production can be used in injection molding, the plates or the body on the one hand and the carrier on the other hand made of the same metal or of the same Consist of metal alloy.
DE1917333437D 1917-07-07 1917-07-07 Process for the production of plates or curved surfaces made of metal attached to a common carrier, in particular for rotary plate capacitors Expired DE333437C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE333437T 1917-07-07

Publications (1)

Publication Number Publication Date
DE333437C true DE333437C (en) 1921-02-24

Family

ID=6209809

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1917333437D Expired DE333437C (en) 1917-07-07 1917-07-07 Process for the production of plates or curved surfaces made of metal attached to a common carrier, in particular for rotary plate capacitors

Country Status (1)

Country Link
DE (1) DE333437C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE748671C (en) * 1937-10-16 1944-11-08 Rotary capacitor, in particular multiple capacitor, in which the stator plates are connected to the support bolt or bolts by overmolding with an insulating compound

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE748671C (en) * 1937-10-16 1944-11-08 Rotary capacitor, in particular multiple capacitor, in which the stator plates are connected to the support bolt or bolts by overmolding with an insulating compound

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