EP2955433B1 - Gelenkstück für ein leuchtvorrichtung und beleuchtungsanordnung mit diesem gelenkstück - Google Patents

Gelenkstück für ein leuchtvorrichtung und beleuchtungsanordnung mit diesem gelenkstück Download PDF

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Publication number
EP2955433B1
EP2955433B1 EP15169940.2A EP15169940A EP2955433B1 EP 2955433 B1 EP2955433 B1 EP 2955433B1 EP 15169940 A EP15169940 A EP 15169940A EP 2955433 B1 EP2955433 B1 EP 2955433B1
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EP
European Patent Office
Prior art keywords
joint
inner body
outer body
previous
joint according
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Application number
EP15169940.2A
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English (en)
French (fr)
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EP2955433A1 (de
Inventor
Roberto Gregorelli
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.)
Gregorelli Michela
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Gregorelli Michela
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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
    • F21V21/28—Pivoted arms adjustable in more than one plane
    • F21V21/29—Pivoted arms adjustable in more than one plane employing universal joints

Definitions

  • This invention relates to a joint for a lighting device, and a lighting assembly comprising such a joint.
  • This invention belongs in this context, proposing to provide a joint and a lighting assembly able to overcome the above-mentioned drawbacks, and in particular to provide a joint capable of making available, in addition to traditional lighting orientations, an extensible movement of the light source.
  • reference number 1 identifies, in its entirety, a joint for a lighting device.
  • this joint 1 serves to connect the lighting device 102 to a support structure 100 in a moveable manner.
  • the support structure 100 could include a formwork, a device base, a support bracket, a fastening element or similar of the lighting device 102.
  • This joint 1 comprises an outer body 2 that extends around a longitudinal axis X and is connectable to the support structure 100 for the lighting device.
  • the outer body 2 may be generally or substantially tubular.
  • an axial end portion 2' of the outer body includes an end wall 36, transverse or orthogonal with respect to the longitudinal axis X, that closes, at least in part, a compartment 20 of this body.
  • the outer body delimits a longitudinal compartment 20, for example of substantially cylindrical shape.
  • the outer body 2 delimits within its thickness at least a longitudinal slot 28, for example with a development substantially parallel to the longitudinal axis X, which preferably puts in communication the longitudinal compartment 20 and a space external to the outer body 2.
  • the end wall protrudes radially externally with respect to an outer surface 38 of the outer body.
  • this end wall makes an abutment ring, in the embodiments shown a of circular shape, against the support structure 100.
  • the end wall serves to locate or to determine the depth of penetration of the outer body in the support structure.
  • the outer body 2 terminates axially with an exit opening 22 of an inner body 4 described below.
  • the exit opening is formed in correspondence to the end wall 36.
  • the joint 1 further comprises an inner body 4 and a coupling portion 6.
  • the inner body 4 is hollow and inserted in a telescopically mobile manner in the outer body 2, between a substantially retracted configuration and a partially extracted configuration from said body ( Figures 1 or 3 ).
  • the inner body has a generally tubular shape.
  • the inner body 4 comprises a guide portion 18 axial to the outer body 2, and an articulated portion 12, articulated around a second rotation axis R2 and integral in translation between the configurations discussed previously with respect to the guide portion 18.
  • the second rotation axis R2 is substantially parallel to the longitudinal axis X.
  • the guide portion 18 could comprise a union stem 40 inserted into a proximal vane 42 of the articulated portion.
  • the axial retention of such portions 18, 12 with possibility of rotation about the second rotation axis R2 may be made through a junction component 44 (for example an elastic ring) partially received in seats 46, 46', formed in the thickness of each of the above-mentioned portions.
  • a junction component 44 for example an elastic ring
  • connection through the junction component 44 may be of an irreversible type.
  • the axial guide portion 18 is shape-coupled, to achieve a prismatic pair, to a cross-section of the longitudinal chamber 20 delimited by the outer body 2.
  • the external outline of the axial guide portion 18 could be in contact, optionally indirectly, with the at least one inner surface 48 that delimits this compartment 20, so as to ensure the axial guidance of the inner body but to prevent rotations of the axial guide portion 18 around the rotation axis R2.
  • the outer body 2 and the axial guide portion 18 could be shape-coupled to achieve the above-mentioned prismatic pair, through a protective tooth 32 or (semi-)sleeve of the axial guide portion 18 that protrudes in the longitudinal slot 28 delimited in the thickness of the outer body 2.
  • the axial guide portion 18 has a transverse or radial dimension greater than the transit section through the exit opening 22, so as to achieve an end-stroke towards the extracted configuration.
  • the axial guide portion 18 and this opening could constitute end-stroke means of the inner body 4 with respect to the outer body 2.
  • the joint 1 further comprises a coupling portion 6 of said joint to the lighting device 102, connected to the inner body 4 and articulated in relation to the outer body 2 around rotation axes R1, R2 incident to each other.
  • the coupling portion 6 comprises an external thread 50, as shown in the tables.
  • the coupling portion could comprise an internal thread, or a hollow element with helical threads formed within that element.
  • these axes are preferably substantially orthogonal.
  • the coupling portion 6 is hinged to the inner body 4 about a first rotation axis R1.
  • the coupling portion could comprise an articulated portion 52 rotatably received in an articulation seat 54 arranged on or in the inner body 2.
  • the articulated portion could comprise a (semi-)spherical part.
  • the articulated portion 52 - for example between the mentioned threaded and the (semi-)spherical part - could comprise an outer surface 56 that is arranged and/or shaped so as not to be subject to friction forces during the rotation of the coupling portion about the first rotation axis R1.
  • the outer surface 56 could be lowered, thinned or retracted radially with respect to the surfaces that flank it in an axial direction.
  • the first rotation axis R1 lies in a plane substantially orthogonal with respect to the longitudinal axis X.
  • the maximum angle of rotation of the coupling portion 6 about the first rotation axis R1 is smaller than 140°, preferably smaller than 120°, for example equal to or smaller than about 90°.
  • the coupling portion 6 is rotatable about the second rotation axis R2 with respect to the outer body 2.
  • the joint 1 comprises means for limiting the maximum angle of rotation of the coupling portion 6 around the second rotation axis R2, integrated in such joint.
  • such means could be integrated between the inner body 4 and the outer body 2.
  • the maximum angle of rotation of the coupling portion about the second rotation axis R2 could be substantially equal to, or smaller than, 360°.
  • maximum rotation of 360° means a rotary movement from 0° to 360° without possibility of rotating further toward increasing angles, but with the sole possibility of rotating in a reverse direction (from 360° to the 0° of departure).
  • the joint 1 may comprise a movable abutment 14 between the articulated portion 12 and an axial guide portion 18 of the inner body 4.
  • abutment 14 for example a ball or a plate - could be placed in a circumferential groove 16 formed in this articulated portion 12 (or in the guide axial guide portion 18), and could be movable by an axial overhang 58 formed on the other between this axial guide portion 18 (or such articulated portion 12).
  • the means for limiting the maximum angle of rotation may include the above-mentioned movable abutment 14, circumferential groove 16 and axial overhang 58.
  • the movable abutment 14 could be received partly in the circumferential groove 16 and partly in an annular groove 60, inside of which this overhang 58 protrudes axially.
  • the axial guide portion 18 delimits the annular groove 60 and, more precisely, said groove is arranged at the union stem 40.
  • the coupling portion 6 and the inner body 4 define sections of a cable-transit passage 8, 10 for at least one electrical conductor 200 supplying the lighting device.
  • the joint according to this variant also allows the transit of the related electrical conductor inside the components described, in order to avoid cables external to the joint.
  • the joint comprises end-stroke means of the inner body 4 with respect to the outer body 2, that act in the extracted configuration and/or in the retracted configuration, advantageously in both these configurations.
  • the end-stroke means are integrated between the inner body 4 and the outer body 2.
  • the end-stroke means are configured to snap into the extracted configuration and/or in the retracted configuration.
  • the end-stroke means comprise at least one elastic element 24 (for example an O-ring) compressed in an intermediate configuration between the extracted and retracted configurations, and expandable at one or both of these configurations in an undercut or internal groove 26, 26' to prevent the movements of the inner body 4.
  • elastic element 24 for example an O-ring
  • the elastic element 24 lies in a compressed condition by virtue of the restricted space between the inner body 4 and the outer body 2.
  • the undercut, the internal groove 26,26' or their plurality is delimited by the inner surface 48 of the outer body 2.
  • the elastic element 24 is placed in a lowered seat 62 of the inner body 4 and, specifically, in a lowered seat 62 of the axial guide portion 18.
  • the elastic element 24 projects at least partly outside of the lowered seat, specifically in a radial direction.
  • the joint comprises an elastic element 24 or a friction element, interposed between the inner body and the outer body, calibrated in order to prevent movements of the inner body below a predetermined applied force.
  • the inner body delimits a first axial access 64 for the entry of the electrical conductor 200 in the cable-transit passage 8,10.
  • the inner body 4 comprises at least a second radial entrance 30 for the passage of the electrical conductor 200.
  • the outer body could delimit a second axial access 66 for the entry of the electrical conductor 200 in the cable-transit passage 8, 10.
  • the longitudinal slot 28 forms a first radial entrance of the electrical conductor 200 in the cable-transit passage 8, 10.
  • the second radial entrance 30 may be at least partially aligned with the first longitudinal radial entrance of the longitudinal slot 28 in any position of the inner body 4 with respect to the outer body 4.
  • the second radial entrance 30 is delimited by at least a part of a protective tooth 32 or of a (semi-) sleeve that projects into the longitudinal slot 28 to protect the electric conductor 200 from cutting forces.
  • This invention also covers a lighting device 102 comprising a joint 1 according to any of the previous variants.
  • this invention covers a lighting assembly comprising a support structure 100, at least one lighting device 102 and at least one joint 1, as described, connected to the structure and to the device.
  • the support structure 100 comprises a structure wall 104 defining a shaped hole 106 shape-coupled to the outer body 2 for anti-rotation of these components.
  • the shaped hole 106 and the outer body 2 define abutment surfaces 68, 70 reciprocally shaped to define a prismatic pair.
  • the joint 1 can be firmly joined to the structure wall 104 by means of a locking nut 72 screwed to an external thread 34 formed on the outer body.
  • the structure wall 104 remains locked between the end wall 36 and the locking nut 72.
  • joint covered by this invention is able to achieve discrete positions of use, obtainable in a repeatable and reliable manner.
  • the joint covered by this invention is articulated along mutually incident axes, so as to achieve an articulation of 90° in a first direction, and 360° in a second direction incident or orthogonal to the first.
  • the joint covered by this invention can be adapted to different uses that, for example, involve a different spatial orientation or a different movement force of the parts described, with minor modifications of the components.
  • the joint covered by this invention can be used both in table lamps and suspended lamps.
  • the joint covered by this invention is designed to modify its positions only through a significant external intervention, as the tolerances of the mechanical parts have been tested for this purpose.
  • the joint covered by this invention can be used in recessed lamps, since the extractability and orientability described are particularly suitable for such use.
  • the joint covered by this invention allows preserving the integrity of the electrical cables passing inside, during both longitudinal and rotational movements.
  • the joint is suitable to avoid twisting of the cables and, further, to protect them from accidental impacts that could damage the related insulating sheaths.
  • the joint covered by this invention is designed to make the cables transit indifferently in an axial and/or radial direction. This results in a high versatility of use.
  • the joint covered by this invention constitutes an innovative universal and miniaturized solution in the lighting industry.
  • the joint covered by this invention has an extremely reliable and reproducible operation, especially thanks to the techniques described above.
  • the joint covered by this invention is suitable to remain aesthetically pleasing even after intensive use, at least as regards the surface finish, for a longer time compared to traditional joints.
  • each of the variants described as belonging to a possible embodiment can be realized independently of the other variants described.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Claims (15)

  1. Gelenk (1), umfassend:
    - einen äußeren Körper (2), der sich um eine Längsachse (X) erstreckt und mit einer Stützstruktur (100) für eine Be-leuchtungsvorrichtung (102) verbindbar ist;
    - einen inneren Körper (4), der hohl und auf eine ausfahrbar bewegliche Weise in den äußeren Körper (2) eingesetzt ist, zwischen einer im Wesentlichen eingezogenen Konfiguration und einer teilweise aus dem äußeren Körper (2) herausgezogenen Konfiguration;
    - einen Kopplungsabschnitt (6) des Gelenks (1) mit der Be-leuchtungsvorrichtung (102), verbunden mit dem inneren Körper (4) und angelenkt in Bezug auf den äußeren Körper (2) um zu-einander bzw. aufeinander einfallende Rotationsachsen (R1, R2) herum;
    wobei der Kopplungsabschnitt (6) und der innere Körper (4) Abschnitte einer Kabel-Durchgangspassage (8, 10) für mindestens einen elektrischen Leiter (200) definieren, der die Beleuch-tungsvorrichtung (102) versorgt;
    wobei das Gelenk (1) dadurch charakterisiert ist, dass der äußere Körper (2) in seiner Dicke mindestens einen Längsschlitz (28) definiert, um einen ersten radialen Eingang des elektrischen Leiters (200) in der Kabel-Durchgangspassage (8, 10) zu bilden.
  2. Gelenk nach Anspruch 1, wobei der Kopplungsabschnitt (6) an dem inneren Körper (4) eingehängt ist, wobei der maximale Rotationswinkel des Abschnitts um eine erste Rotationsachse (R1) kleiner als 120° ist, zum Beispiel kleiner als oder gleich ca. 90°.
  3. Gelenk nach Anspruch 1 oder 2, wobei der Kopplungsabschnitt (6) an dem inneren Körper (4) eingehängt ist um eine erste Rotationsachse (R1), und wobei das Gelenk (1) Mittel zum Be-grenzen des maximalen Rotationswinkels des Kopplungsabschnitts (6) um eine zweite in das Gelenk integrierte Rotationsachse (R2) herum umfasst.
  4. Gelenk nach einem der vorangehenden Ansprüche, wobei durch einen gelenkigen Abschnitt (12) des inneren Körpers (4) der Kopplungsabschnitt (6) um eine zweite Rotationsachse (R2) in Bezug auf den äußeren Körper (2) drehbar ist, wobei der maximale Rotationswinkel des Kopplungsabschnitts (6) um die zweite Rotationsachse (R2) vorzugsweise gleich oder kleiner als 360° ist.
  5. Gelenk nach dem vorangehenden Anspruch, umfassend eine bewegliche Anlagefläche (14) zwischen dem gelenkigen Abschnitt (12) und einem axialen Führungsabschnitt (18) des inneren Körpers (4), platziert in einer Umfangsvertiefung (16) in dem gelenkigen Abschnitt (12) oder dem Führungsabschnitt (18), und bewegbar durch einen radialen Überhang des Führungsabschnitts (18) oder des gelenkigen Abschnitts (12), um eine Maximalro-tation von 360° zu ermöglichen.
  6. Gelenk nach einem der vorangehenden Ansprüche, wobei der innere Körper (4) einen axialen Führungsabschnitt (18) in Bezug auf den äußeren Körper (2) umfasst, und einen gelenkigen Ab-schnitt (12), der um eine zweite Rotationsachse (R2) angelenkt und einstückig in der Übersetzung mit den Konfigurationen in Bezug auf den Führungsabschnitt ist.
  7. Gelenk nach dem vorangehenden Anspruch, wobei der axiale Führungsabschnitt (18) form-gekoppelt mit einem Querschnitt einer durch den äußeren Körper (2) begrenzten Längskammer (20) ist, um ein prismatisches Paar zu erzielen.
  8. Gelenk nach Anspruch 6 oder 7, wobei der äußere Körper (2) axial mit einer Öffnung für den Ausgang (22) des inneren Körpers (4) abschließt, wobei der axiale Führungsabschnitt (18) eine größere transversale Abmessung als der Durchgangsabschnitt der Öffnung hat, um einen Endhub zur herausgezogenen Konfiguration hin zu bilden.
  9. Gelenk nach einem der vorangehenden Ansprüche, umfassend Endhub-Mittel des inneren Körpers (4) in Bezug auf den äußeren Körper (2), die konfiguriert sind, um in die herausgezogene Konfiguration und in die eingezogene Konfiguration einzu-schnappen, integriert zwischen dem inneren Körper (4) und dem äußeren Körper (2).
  10. Gelenk nach dem vorangehenden Anspruch, wobei die End-hub-Mittel mindestens ein elastisches Element (24) umfassen, zum Beispiel einen O-Ring, komprimiert in einer Zwischenkon-figuration zwischen der herausgezogenen und eingezogenen Konfiguration, und erweiterbar an einer oder beiden dieser Konfigurationen in einer unterschnittenen oder inneren Nut (26, 26'), um Bewegungen des inneren Körpers (4) zu verhindern.
  11. Gelenk nach einem der vorangehenden Ansprüche, wobei der innere Körper (4) mindestens einen zweiten radialen Eingang (30) für den Durchgang des elektrischen Leiters (200) umfasst, wobei der zweite Eingang zumindest teilweise ausgerichtet ist zum ersten radialen Eingang des Längsschlitzes (28) in jeglicher axialer Position des inneren Körpers (4) und begrenzt ist durch zumindest einen Teil einer Schutzzacke (32) oder durch eine (Halb-) Hülse, die in den Längsschlitz (28) hineinragt, um den elektrischen Leiter (200) vor Schnittkräften zu schützen.
  12. Gelenk nach einem der vorangehenden Ansprüche, umfassend ein elastisches Element (24) oder ein Reibungselement, zwi-schengefügt zwischen den inneren Körper und den äußeren Körper, kalibriert, um Bewegungen des inneren Körpers unterhalb einer vorbestimmten angewandten Kraft zu verhindern.
  13. Beleuchtungsanordnung umfassend eine Stützstruktur (100), mindestens eine Beleuchtungsvorrichtung (102) und mindestens ein Gelenk (1), nach einem der vorangehenden Ansprüche, ver-bunden mit der Stützstruktur (100) und der Beleuchtungsvor-richtung (102).
  14. Beleuchtungsanordnung nach dem vorangehenden Anspruch, wobei die Stützstruktur (100) eine Strukturwand (104) umfasst, die ein geformtes Loch (106) definiert, das mit dem äußeren Körper (2) für eine Drehblockierung dieser Komponenten form-gekoppelt ist.
  15. Beleuchtungsanordnung nach einem der vorangehenden An-sprüche, wobei das geformte Loch (106) und der äußere Körper (2) Anlageflächen (68, 70) definieren, die wechselseitig geformt sind, um ein prismatisches Paar zu definieren.
EP15169940.2A 2014-06-13 2015-05-29 Gelenkstück für ein leuchtvorrichtung und beleuchtungsanordnung mit diesem gelenkstück Active EP2955433B1 (de)

Applications Claiming Priority (1)

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ITBS20140114 2014-06-13

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EP2955433B1 true EP2955433B1 (de) 2017-06-14

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108302362B (zh) * 2017-01-13 2023-10-13 昆山奇朗数码科技有限公司 调节灵活的led灯具
NL2018730B1 (en) * 2017-04-18 2018-10-29 Laevo B V Wearable support structure for at least partly relieving a human body during leaning or bending over.

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBS20020038A1 (it) * 2002-04-12 2003-10-13 Roberto Gregorelli Dispositivo meccanico snodato, particolarmente per apparecchi per illuminazione
ES2326300B1 (es) * 2007-10-29 2010-07-05 Esamedex, S.L. Lampara para leer acostado en la cama.

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