DE437402C

DE437402C - Screw socket for electric incandescent lamps with a metal threaded basket and insulating rings screwed onto the threaded basket, the latter with an extended cup serving as protection against contact

Info

Publication number: DE437402C
Application number: DEL62814D
Authority: DE
Original assignee: Lindner & Co
Current assignee: Lindner & Co
Priority date: 1925-03-25
Filing date: 1925-03-25
Publication date: 1926-11-20

Description

Die Erfindung bezieht sich auf die bekannte Schraubfassung mit metallenem Fassungsmantel und als Berührungsschutz ausgebildetem, auf den Gewindekorb aufschraubbarem Isolierringe und besteht darin, daß der Isolierring an seinem oberen, dem Metallmantel der Fassung zugekehrten Ende zackenförmige Ausschnitte hat, in welche entsprechende Lappen oder Vorsprünge des Fassungsmantels hineingebogen werden, so daß der Isolierring, der in bekannter Weise als Berührungsschutz wirkt, nicht ohne weiteres von dem Metallmantel und dem Gewindekorbe abgeschraubt werden kann, es vielmehr eines besonderen Werkzeuges bedarf, um erst die Lappen des Metallmantels aus den Vertiefungen oder Ausschnitten des Isolierringes wieder herauszubiegen.The invention relates to the known screw socket with a metallic socket jacket and designed as protection against accidental contact, which can be screwed onto the threaded cage Isolation rings and consists in that the isolation ring on its upper, the metal jacket the socket facing end has serrated cutouts in which corresponding Tabs or projections of the socket jacket are bent in so that the insulating ring, which acts in a known way as protection against accidental contact, is not easy can be unscrewed from the metal jacket and the threaded basket, it is rather one Special tools are required to first remove the tabs of the metal jacket from the depressions or to bend cutouts of the insulating ring out again.

Wenn man nun dem Fassungsmantel zwecksIf you now have the purpose of the socket

ao Verbindung mit der Fassungskappe ein Gewinde gibt, das entgegengesetzt dem Gewinde zwischen Isolierring und Gewindekorb läuft, so muß erst, nachdem zuvor die Lappen des Fassungsmantels aus den Ausbuchtungen des Isolierringes herausgebogen worden sind, der Isolierring von dem Gewindekorbe abgeschraubt werden, ehe man den Fassungsmantel von der Fassungskappe lösen kann. Der gleiche Zweck kann auch erreicht werden, wenn das Gewinde des Fassungsmantels zwar gleichgerichtet mit dem Gewinde des Gewindekorbes läuft, aber beide Gewinde verschiedene Steigungen haben.ao connection with the socket cap is a thread that is opposite to the thread runs between the insulating ring and the threaded basket, it must only be done after the tabs of the Socket jacket have been bent out of the bulges of the insulating ring, the The insulating ring must be unscrewed from the threaded basket before the socket casing can detach from the socket cap. The same purpose can also be achieved if the thread of the socket jacket runs in the same direction as the thread of the threaded basket, but both threads are different Have slopes.

Es ist so eine einfache und sichere Verbindung zwischen dem Fassungsmantel und dem als Berührungsschutz wirkenden Isolierringe geschaffen, welche bezweckt, daß nicht ohne weiteres der als Berührungsschutz wirkende Isolierring aus der Fassung herausgeschraubt werden kann.It's such a simple and secure connection between the socket jacket and the created as a contact protection acting insulating rings, which aims that not without further unscrewed the isolating ring acting as contact protection from the socket can be.

Eine Ausführungsform der Erfindung ist auf der Zeichnung dargestellt.An embodiment of the invention is shown in the drawing.

Abb. ι zeigt die, beispielsweise hahnlos gewählte, Fassung in Außenansicht,Fig. Ι shows the, for example, tapless selected, Version in external view,

Abb. 2 im Querschnitt.Fig. 2 in cross section.

Der Fassungsmantel 12 ist mit der Fassungskappe 6 durch das Gewinde 7 verschraubt, das entweder entgegengesetzt dem-The socket casing 12 is screwed to the socket cap 6 through the thread 7, that is either the opposite of

Claims

those of the thread basket runs, so one as a left-hand thread, the other as a right-hand thread, or it has the same direction and a different slope. The insulating ring 4 has at its upper circumference cutouts 8 and the metal jacket 12 at its lower end one or more tabs 9, which before the assembly of the socket at right angles from the jacket 12 are bent. Only after the insulating ring 4 has been completely screwed on on the threaded basket 1 in such a way that the lower edge 10 of the socket jacket 12 on the Edge 11 of the mounting ring is seated, the tabs 9 are in the cutouts 8 of the insulating ring 4 inflected. In this way you hold the insulating ring against loosening. The insulating ring can only be unscrewed from the threaded body when the tabs 9 again are bent back at right angles to the metal jacket. But this is only by means of special Tool possible, and thereby the necessary security is achieved that the insulating ring is not unscrewed without authorization.

^a 5 patent claims:

i. Screw socket for electric light bulbs with a metal threaded basket and insulating rings screwed onto the threaded basket, the latter with a longer than Contact protection serving cups, characterized by cutouts (8) in the upper, outside of the metal socket jacket (12) lying circumference of the insulating ring (4) and these cutouts (8) corresponding tabs (9) of the socket casing (12), which tabs (9) when screwed in Insulating rings (4) are pressed into the cutouts (8) in order to prevent twisting of the insulating ring (4) and before unscrewing the insulating ring (4) again from the cutouts (8) must be bent out.

2. Screw socket according to claim 1, characterized in that the connecting thread (7) a left-hand thread between the socket cap (6) and socket casing (12) is when the thread between the threaded basket (1) and the insulating ring (4) is a Right-hand thread is, or vice versa, that the former is a right-hand thread, if the latter a left-hand thread.

3. Screw socket according to claim 1, characterized in that the connecting thread (7) between the socket cap (6) and socket casing (12) opposite the thread between the insulating ring (4) and The thread basket (1) has the same direction of rotation but a different pitch.