DE412976C - Swivel joint for support arms of electric lamps - Google Patents

Swivel joint for support arms of electric lamps

Info

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
Application number
DED43234D
Other languages
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 DE412976C publication Critical patent/DE412976C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14Adjustable mountings
    • F21V21/26Pivoted 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)

PATENT-ANSPRUcH: 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, gekennzeichnet durch zentrisch um die Bolzenlöcher der beiden Kugelabschnitte des einen Rohrendes eingepreßte, mit entjaprechenden Wulsten in den Kugelabschnitten des anderen Rohrendes ineinandergreifende und so die Gleitflächen des Gelenkes bildende Ringwulste. PATENT CLAIM: Swivel joint for support arms of electric lamps, in which the ends of two tubes are split open, widened, pressed into the shape of spherical sections and connected to one another by a pivot pin, characterized by centered around the bolt holes of the two spherical sections of one tube end pressed in with corresponding ones Bulges in the spherical sections of the other end of the pipe interlocking and thus forming the sliding surfaces of the joint.
DED43234D 1922-05-12 1923-02-23 Swivel joint for support arms of electric lamps Expired DE412976C (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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