DE890841C - Fastening device for a lamp tube in a foot, a sleeve or the like. - Google Patents
Fastening device for a lamp tube in a foot, a sleeve or the like.Info
- Publication number
- DE890841C DE890841C DES4637D DES0004637D DE890841C DE 890841 C DE890841 C DE 890841C DE S4637 D DES4637 D DE S4637D DE S0004637 D DES0004637 D DE S0004637D DE 890841 C DE890841 C DE 890841C
- Authority
- DE
- Germany
- Prior art keywords
- foot
- sleeve
- fastening device
- lamp tube
- ribs
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/02—Wall, ceiling, or floor bases; Fixing pendants or arms to the bases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/06—Bases for movable standing lamps; Fixing standards to the bases
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
Description
Die Füße oder Muffen zur Befestigung von Leuchtenrohren nach dem Hauptpatent, die durch Pressen oder Spritzen hergestellt werden, fallen in ihren Abmessungen, insbesondere in ihrem Innendurchmesser, naturgemäß sehr genau aus. Für die meist üblichen genormten Rohre dagegen sind bekanntlich gewisse Toleranzen auch in ihrem Außendurchmesser zugelassen. Infolgedessen muß der Innendurchmesser der Muffe oder des Fußes für den größten Rohrdurchmesser bemessen sein. Daher sitzt das schwache Rohr locker oder soll verändert werden.The feet or sleeves for fastening lamp tubes according to the main patent, which are made by pressing or injection fall in their dimensions, especially in their inner diameter, naturally very precisely. For most of them common standardized pipes, however, are known to have certain tolerances in their Outside diameter permitted. As a result, the inner diameter of the sleeve or of the foot must be dimensioned for the largest pipe diameter. Hence the weak one sits Pipe loose or should be changed.
Nach der Erfindung wird ein fester Sitz des Rohres dadurch erreicht, daß an der Innenwand des Fußes oder der Muffe Rippen angeordnet sind, die in scharfe Kanten nach Art von Gratlcanten auslaufen.According to the invention, a tight fit of the pipe is achieved by that on the inner wall of the foot or the sleeve ribs are arranged in sharp Edges run out in the manner of burrs.
In Fig. i und 2 ist i ein Fuß und 2 ein Leuchtenrohr, 3 ist die nach außen federnde Zunge, die in eine Nut 4 am Leuchtenfüß einrastet. 5 ist eine Anlauffläche an der Einführungsöffnung und 6 ein Ansatz, hinter den die federnde Zunge 3 schnappt. An der Innenwand des Fußes sind beispielsweise drei Rippen 8 angeordnet, die in scharfe -Kanten nach Art von Gratkanten auslaufen. Diese Rippen werden beim Pressen oder Spritzen des Fußes mit angeformt. Sie ragen so weit in das Innere der Muffe oder des Fußes hinein, daß sie den Durchgang noch für Rohre unter dem Kleins.tmaß der zugelassenen Toleranzen verringern. Bei dem Einstecken des Rohres mit einem gewissen Kraftaufwand wenden die scharfen Kanten der Rippen, insbesondere wenn es sich um Muffen oder Füße aus Zinkspritzguß handelt, von der Stirnfläche des Rohres so weit abgestoßen, daß es ohne Spiel festsitzt.: Uni ein leichtes Ansetzen des Rohres zu erreichen, sind die Rippen an der Einführungsäffnung bei 9 nach außen abgeschrägt und bilden, dadurch Anlaufflächen für das Rohr.In Fig. I and 2 i is a foot and 2 is a lamp tube, 3 is the one after externally resilient tongue that engages in a groove 4 on the lamp base. 5 is a run-up surface at the insertion opening and 6 an approach behind which the resilient tongue 3 snaps. On the inner wall of the foot, for example, three ribs 8 are arranged, which in sharp edges taper off like burrs. These ribs are when pressed or injection molding of the foot. They protrude so far into the interior of the sleeve or the foot into it, so that they still measure the passage for pipes under the small reduce the permitted tolerances. When inserting the pipe with a Use some force to turn the sharp edges of the ribs, especially if there is are die-cast zinc sockets or feet from the face of the pipe repelled so far that it sticks without play .: Uni an easy attachment of the To reach the tube, the ribs on the insertion opening at 9 are outward beveled and form, thereby contact surfaces for the pipe.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES4637D DE890841C (en) | 1942-08-16 | 1942-08-16 | Fastening device for a lamp tube in a foot, a sleeve or the like. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES4637D DE890841C (en) | 1942-08-16 | 1942-08-16 | Fastening device for a lamp tube in a foot, a sleeve or the like. |
Publications (1)
Publication Number | Publication Date |
---|---|
DE890841C true DE890841C (en) | 1953-09-21 |
Family
ID=7470837
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES4637D Expired DE890841C (en) | 1942-08-16 | 1942-08-16 | Fastening device for a lamp tube in a foot, a sleeve or the like. |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE890841C (en) |
-
1942
- 1942-08-16 DE DES4637D patent/DE890841C/en not_active Expired
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