DE412976C - Swivel joint for support arms of electric lamps - Google Patents
Swivel joint for support arms of electric lampsInfo
- Publication number
- DE412976C DE412976C DED43234D DED0043234D DE412976C DE 412976 C DE412976 C DE 412976C DE D43234 D DED43234 D DE D43234D DE D0043234 D DED0043234 D DE D0043234D DE 412976 C DE412976 C DE 412976C
- Authority
- DE
- Germany
- Prior art keywords
- swivel joint
- support arms
- electric lamps
- joint
- spherical sections
- 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
- F21V21/14—Adjustable mountings
- F21V21/26—Pivoted arms
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Description
Drehgelenk für Tragarme elektrischer Lampen. Vorliegende Erfindung betrifft ein Drehgelenk für Tragarme elektrischer Lampen, bei welchem die Enden zweier Rohre aufgespalten, verbreitert, in die Form von Kugelabschnitten gepreßt und durch einen Drehbolzen miteinander vereinigt sind. Diesen Drehgelenken haften nun manche Nachteile an, insofern die aufeinander reibenden Verbindungsflächen der Rohre sehr rasch infolge Gebrauches lockerer im Zusammenhange werden, so daß die zur starren Führung der Gelenkverbindung nötige Reibung zwischen den Flächen der Rohrenden nicht mehr vorhanden ist. Diesen Nachteil beseitigt die vorliegende Erfindung.Swivel joint for support arms of electric lamps. Present invention relates to a swivel joint for support arms of electric lamps, in which the ends Two tubes split open, widened, pressed into the shape of spherical sections and are united with one another by a pivot pin. Adhere to these swivel joints now some disadvantages, insofar as the connecting surfaces rubbing against each other Pipes become loosely connected very quickly as a result of use, so that the for the rigid guidance of the joint connection necessary friction between the surfaces of the Pipe ends are no longer present. The present invention overcomes this disadvantage.
Das neue Drehgelenk ist gekennzeichnet durch zentrisch um die Bolzenlöcher der beiden Kugelabschnitte des einen Rohrendes eingepreßte, mit entsprechenden Wulsten in den Kugelabschnitten des anderen Rohrendes ineinandergreifende und- so die Gleitflächen und Reibungsflächen ;des Gelenks bildende Ringwulste.The new swivel joint is characterized by being centered around the bolt holes of the two spherical sections of one end of the pipe pressed in with corresponding beads in the spherical sections of the other end of the pipe interlocking and so the sliding surfaces and friction surfaces of the joint forming annular beads.
Es wird also mit einfachen und billigen Mitteln ein Drehgelenk geschaffen, das den weitestgehenden Anforderungen entspricht, insofern die ringförrhigen Wulste in den Kugelabschnitten der Rohrenden eine derartige starre Führung zeitigen, daß bei genügender Biegsamkeit des Gelenkes doch die Rohrenden in der gebogenen Stellung fest stehen bleiben.A swivel joint is created with simple and cheap means, which corresponds to the most extensive requirements, insofar as the annular beads in the spherical sections of the pipe ends lead to such a rigid guide that with sufficient flexibility of the joint, the pipe ends in the bent position stand still.
In der Zeichnung ist der Erfindungsgegenstand in beispielsweiser Ausführungsform dargestellt. Es zeigen Abb. i ein geschlitztes Rohrende in Seitenansicht, Abb. a zwei geschlitzte Rohrenden, in deren kugelige Schlitzlappen ringförmige Wulste eingepreßt sind, Abb. 3 zwei Rohrelemente mit ihren Lappen bzw. Wulsten ineinandergreifend und durch einen Bolzen zusammengehalten.In the drawing, the subject matter of the invention is shown in an exemplary embodiment shown. Fig. I shows a slotted pipe end in side view, Fig. A two slotted pipe ends with ring-shaped beads pressed into their spherical slotted lobes are, Fig. 3, two tubular elements with their lobes or beads interlocking and held together by a bolt.
Abb. q. zeigt mehrere ineinandergesteckte Rohrenden, deren geschlitzte Lappen gemäß der Erfindung ausgebildet sind.Fig.q. shows several pipe ends plugged into one another, the slotted one Tabs are formed according to the invention.
Es ist also in den Zeichnungen gewissermaßen der Gang der Bearbeitung der Rohrstücke, welche das Drehgelenk bilden sollen, dargestellt.So in the drawings it is, so to speak, the process of editing of the pipe sections, which are to form the swivel joint, shown.
In Abb. i ist eine Ausführungsform dargestellt, bei welcher die Gabel- oder Verbindungslappen a1 durch Schlitzen und Erweitern eines Rohrendes hergestellt sind.In Fig. I an embodiment is shown in which the fork or connecting tabs a1 produced by slitting and expanding one pipe end are.
Abb. 2 zeigt die so hergestellten Rohrenden, welche durch Pressen zunächst die Form eines Kugelabschnittes bl- erhalten haben und in welche dann durch eine zweite Pressung ein ringförmiger Wulst dl hineingebracht wird, wobei in c" ein Loch für den Verbindungsbolzen e ausgestanzt wird.Fig. 2 shows the pipe ends produced in this way, which by pressing first received the shape of a spherical segment bl- and then into which a second pressing an annular bead dl is brought into it, where in c " a hole is punched out for the connecting bolt e.
Abb.3 ist eine Ansicht, welche die Vereinigung der beiden in vorhin beschriebener Weise bearbeiteten Rohrenden und die Verwendung einer Distanzmuffe f1 und eines Bolzens e zeigt.Fig.3 is a view showing the union of the two in earlier the way described processed pipe ends and the use of a spacer sleeve shows f1 and a bolt e.
Wenn eine besonders starke Reibungsverbindung verlangt wird, so werden die Rohrenden und damit die konzentrischen Reibungsflächen verdoppelt, indem man ein Rohr in das andere einschiebt, wie Abb. q. zeigt. Auf diese Weise wird die Größe der Reibungsflächen, welche durch die Wulste d2 gebildet werden, verdoppelt, ohne daß praktisch der.Umfang des Gelenkes größer wird.If a particularly strong frictional connection is required, so will the pipe ends and thus the concentric friction surfaces are doubled by slide one tube into the other, as shown in Fig. q. shows. This way the size will be of the friction surfaces, which are formed by the beads d2, doubled without that practically the circumference of the joint is larger.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB412976X | 1922-05-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE412976C true DE412976C (en) | 1925-05-02 |
Family
ID=10419034
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DED43234D Expired DE412976C (en) | 1922-05-12 | 1923-02-23 | Swivel joint for support arms of electric lamps |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE412976C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1038648B (en) * | 1953-12-16 | 1958-09-11 | Schneider & Co Dr Ing | Joint for workplace lights |
DE8911264U1 (en) * | 1989-09-21 | 1991-01-31 | Frankl & Kirchner GmbH & Co KG Fabrik für Elektromotoren u. elektrische Apparate, 6830 Schwetzingen | Luminaire, especially workplace lamp |
-
1923
- 1923-02-23 DE DED43234D patent/DE412976C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1038648B (en) * | 1953-12-16 | 1958-09-11 | Schneider & Co Dr Ing | Joint for workplace lights |
DE8911264U1 (en) * | 1989-09-21 | 1991-01-31 | Frankl & Kirchner GmbH & Co KG Fabrik für Elektromotoren u. elektrische Apparate, 6830 Schwetzingen | Luminaire, especially workplace lamp |
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