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EP0183065B1 - Lampe de bureau - Google Patents

Lampe de bureau Download PDF

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Publication number
EP0183065B1
EP0183065B1 EP85113677A EP85113677A EP0183065B1 EP 0183065 B1 EP0183065 B1 EP 0183065B1 EP 85113677 A EP85113677 A EP 85113677A EP 85113677 A EP85113677 A EP 85113677A EP 0183065 B1 EP0183065 B1 EP 0183065B1
Authority
EP
European Patent Office
Prior art keywords
lamp
rods
lamp according
base section
spherical
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 - Lifetime
Application number
EP85113677A
Other languages
German (de)
English (en)
Other versions
EP0183065A3 (en
EP0183065A2 (fr
Inventor
Fritz Sträter
Uwe Sträter
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
Priority claimed from DE19843443505 external-priority patent/DE3443505A1/de
Priority claimed from DE19853512145 external-priority patent/DE3512145A1/de
Application filed by Individual filed Critical Individual
Priority to AT85113677T priority Critical patent/ATE49801T1/de
Publication of EP0183065A2 publication Critical patent/EP0183065A2/fr
Publication of EP0183065A3 publication Critical patent/EP0183065A3/de
Application granted granted Critical
Publication of EP0183065B1 publication Critical patent/EP0183065B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S6/00—Lighting devices intended to be free-standing
    • F21S6/002—Table lamps, e.g. for ambient lighting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S6/00—Lighting devices intended to be free-standing
    • F21S6/002—Table lamps, e.g. for ambient lighting
    • F21S6/003—Table lamps, e.g. for ambient lighting for task lighting, e.g. for reading or desk work, e.g. angle poise lamps
    • 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

  • the invention relates to an electric desk, table or floor lamp which has a hinged cantilever arm which struts from a base part and which carries an articulated lamp at its free end part, the cantilever arm consisting of at least three identical, parallel rods and each of these rods is pivotally pivotably pivoted on the base part and on the housing of the lamp.
  • Such a lamp is known from FR-A-394 278.
  • the invention has for its object to improve a generic desk lamp in such a way that the cantilever remains unlimitedly pivotable in all directions relative to the base part, but at the same time simplifies handling for setting the lamp.
  • the lamp is always adjusted parallel to the base part when the cantilever arm is pivoted relative to the base part, regardless of the direction, so that the originally selected direction of the lamp to the base surface is always retained.
  • EP-A0168159 has made known an older proposal, which has not been published beforehand, and describes a lamp in which two of the three rods present there are connected to one another by a cross connection. This document constitutes a state of the art according to Article 54 (3) EPC.
  • a preferred, technically particularly inexpensive and at the same time robust design of the table lamp described above is characterized in that spherical thickenings are arranged on all rods, both in the area of the base part and the lamp at a distance from the rod end, each in the base part or at the lamp arranged, spherical cap-like and more or less to the spherical thickened frictionally mountable brackets are pivotally mounted, and that preferably at the ends of all rods, both in the area of the base part and in the area of the lamp each have a two-axis joint with a first for longitudinal extension of the rods perpendicular to the articulation axis and with a second articulated axis perpendicular to the latter and to the associated rod radially directed articulation axis and that the free ends of the second articulation axis at each end of the cantilever arm in a common, rigid connecting member are rotatably mounted.
  • first axes of the two-axis joints are arranged diametrically penetrating and that the flanges of a U-shaped link are articulated on each first joint axis, in the web of which the end part of the second joint axis facing this is rotatably mounted.
  • a preferred design of the holder for the spherical thickening of the rods is characterized in that a bore is arranged in the facing wall parts of the base part and the lamp for each rod, the diameter of which is on the one hand larger than the diameter of a rod and on the other hand slightly smaller than that is the largest diameter of a spherical rod thickening, furthermore each of the aforementioned wall parts is assigned a pressure plate which can be clamped to the latter, in which the bores of the aforementioned wall parts in shape, dimension and position are arranged opposite each other and that the rods are each a pair opposite one another Reach through the holes while the rod thickenings are arranged so that they can be clamped between the edge parts of the wall and the pressure plate holes, the pressure plates also preferably being arranged within the base part or the lamp.
  • brackets including the devices preventing a rotation of the rods relative to one another, are securely shielded from the outside without additional means and measures being required, which also results in a high level of functional reliability of the entire adjustment mechanism.
  • tubes can be provided as rods through which the electrical leads are passed.
  • the rods are made of electrically conductive material, the rods on the base part and on the lamp are held in an electrically insulated manner, and in particular are arranged within the base part and the lamp Have conductor connection devices so that there is no need for electrical lines in the aforementioned area.
  • Another object of the invention is to improve the desk lamp described above in such a way that while maintaining the advantage already achieved, namely that when pivoting of the cantilever arm relative to the base part, regardless of the direction in which the lamp is always adjusted parallel to the base part, an essential simplification and cost reduction of the devices can be achieved, which preclude the rods from rotating relative to one another.
  • the spherical thickenings each have at least one groove which is parallel to the longitudinal extension of the rods in the direction of their longitudinal extension, the grooves in both spherical thickened portions of each rod are arranged in the same direction to one another, guide pins on the spherical cap-like holders are arranged, each engage in a groove along this adjustable and that the spherical thickenings are rotatable about the longitudinal axes of the guide pins engaging in the grooves.
  • the guide pin mounting unit with a bore adapted to the clamping screw, and to attach it to the clamping screw, so that the clamping screw also the guide pin assembly unit is held in the correct position.
  • the guide pin mounting unit which has a hole in the middle, to a pin, in particular in a non-rotatable manner, in particular in the center between the rods on a wall part or a pressure plate.
  • the guide pins for the bore are arranged in a radially directed manner, so that relatively short and highly bending-resistant guide pins can be achieved with relatively little material.
  • a possibly preferred variant is characterized by radially inwardly directed guide pins formed on the spherical cap-like holders.
  • This electric desk lamp essentially comprises a base part 1 designed as a foot, a cantilever arm 2 articulated thereon and an electric lamp 3 articulated at its upper end.
  • a clamp can also be provided on the base part 1 in order to be able to clamp the desk lamp, for example, on the desk.
  • the base part can also be designed as a fastening plate.
  • the cantilever arm 2 is assembled from three mutually identical and mutually parallel rods 4.
  • the bars 4 are equidistant from each other.
  • a spherical thickening 5 is provided on both end parts of each rod 4.
  • the spherical thickenings 5 each have a diametrically directed bore through which a rod 4 is at least secured with static friction.
  • the thickenings 5 can also be integrally formed on the rods 4.
  • the rods 4 are articulated in a spherically limited manner on the base part 1 or on the lamp 3.
  • a bore 8 is provided in the facing wall parts 6 and 7 of the base part 1 and the lamp 3, which are at least partially box-shaped, for each spherical thickening 5, the diameter of which is slightly smaller than the largest diameter of a spherical thickening 5.
  • the spherical thickenings 5 are pivotally supported and rotatable about the longitudinal axis of the rods 4.
  • the bores 8 in the shape, dimension and position of the same bores 10 and the spherical thickenings 5 are arranged on the edge parts of the bores 8 and 10 to be supported between the wall parts 6 and 7 and a pressure plate 9.
  • the bores 8 and 10 can have conical depressions (not shown) which, however, move outwards with the bores 8 and with the bores 10 expand inside.
  • the tensioning devices are preferably tensioning screws, in particular to be operated from the outside, penetrating through the wall parts 6 or 7 and engaging on the pressure plates 9.
  • a two-axis joint 11 is provided at the end of each rod, a first axis 12 of which extends through the rod 4 diametrically.
  • the flanges of a U-shaped link 13 are articulated on the axle 12 and one end part of a second axle 14 is rotatably mounted in the web of the link 13.
  • the free end parts of the axes directed at right angles to the axes 12 and radially to the rods 4 are rotatably mounted on both ends of the cantilever arm 2 in a common connecting member 15.
  • all axes are immovably supported in the axial direction.
  • the joints 11 as well as the thickenings 5 are also identical to one another.
  • the electrical lead to the lamp 3 can for example be passed through the rods 4 if the latter are designed as tubes.
  • three-axis joints can also be provided to implement the invention, but three-axis joints are, among other things, considerably more complicated and expensive than ball joints.
  • a groove 16 is arranged in each of the spherical thickenings 5, which runs parallel to the longitudinal extension of the rod 4 in the direction of its longitudinal extension.
  • grooves 16 of the two spherical thickened portions 5 of each rod 4 are arranged in the same direction as one another.
  • the three guide pins 17 held on the base part 1 or on the lamp 3 are each combined to form an assembly unit, in particular in such a way that the guide pins 17 are radially braced from a common hub part 18 and are each formed in one piece in the direction of the center of a spherical thickening 5.
  • the grooves 16 have the same depths over their entire length and, as can be seen from FIG. 7, each follow the curved surface of the spherical thickenings 5.
  • grooves 16 with a straight groove base, the latter extending parallel to the longitudinal extension of the rod 4.
  • the greatest depth of a groove 16 is greater than the insertion depth of a guide pin 17.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Claims (16)

1. Lampe de table, de bureau ou de lampadaire électrique, qui présente un bras en porte-à-faux (2) articulé et s'écartant d'une pièce de socle (1), qui porte à son extrémité libre une lampe articulée (3), tandis que le bras articulé (2) est constitué d'au moins trois tiges identiques, parallèles les unes aux autres (4) et que chacune de ces tiges (4) est montée à pivotement par articulation sphérique sur la pièce de socle (1) et sur le boîtier de la lampe (3), caractérisée en ce qu'elle comprend des assemblages par articulation empêchant les rotations des tiges (4) les unes par rapport aux autres.
2. Lampe selon la revendication 1, caractérisée en ce que toutes les tiges (4) sont disposées à la même distance les unes des autres.
3. Lampe selon la revendication 1 ou 2, caractérisée en ce que des surépaisseurs sphériques (5) sont disposées tant dans la zone de la pièce de socle (1) que dans celle de la lampe (3), à une certaine distance des extrémités de tige, lesdites surépaisseurs étant montées à pivotement sur des fixations pouvant être serrées plus ou moins par frottement sur les surépaisseurs sphériques (5) et en forme de calottes sphériques, qui sont disposées tant sur la pièce de socle (1) que sur la lampe (3).
4. Lampe selon l'une des revendications précédentes, caractérisée une articulation à deux axes (11) avec un premier axe d'articulation (12) s'étendant perpendiculairement à l'extension longitudinale des tiges (8) et avec un second axe d'articulation (14) s'étendant perpendiculairement au premier et radialement par rapport à la tige correspondante (4), est disposée aux extrémités de toutes les tiges (4), et cela tant dans la zone de la pièce de socle (1) que dans celle de lampe (3) et que les extrémités libres du second axe d'articulation (14) sont supportées à pivotement à chaque extrémité du bras en porte-à-faux dans un élément d'assemblage rigide commun (13).
5. Lampe selon la revendication (4), caractérisée en ce que les premiers axes (12) des articulations à deux axes (11) sont disposées chaque fois en traversant diamétralement les tiges (4), et que sur chaque premier axe d'articulation (12) sont articulées les flasques (13) d'un élément en forme de U, dont l'âme supporte à pivotement la partie d'extrémité tournée vers celle-ci, du second axe d'articulation (14).
6. Lampe selon l'une des revendications précédentes, caractérisée en ce qu'un alésage (8) est disposé dans les parties de paroi tournées l'une vers l'autre (6, 7) de la pièce de socle (1) et de la lampe (3) pour chaque tige (4), le diamètre de ces alésages étant, d'une part, plus grand que le diamètre d'une tige (4) et d'autre part légèrement plus faible que le plus grand diamètre d'une surépaisseur de tige sphérique (5), tandis qu'une plaque de compression (9) est disposée sur les parties de paroi précitées (6) et (7) en pouvant être serrées contre celles-ci, tandis que des alésages (10) identiques par leur forme, leurs dimensions et leur position aux alésages (8) des parties de paroi précitées (6, 7) sont prévues dans ces plaques et que les tiges (4) traversent chaque fois une paire d'alésage (8, 10) opposés l'un à l'autre, tandis que les surépaisseurs de tige (5) sont disposées de manière à pouvoir être serrées entre les bords des alésages des parties de paroi et des plaques de compression (8, 10).
7. Lampe selon la revendication 6, caractérisée en ce que les plaques de compression (9) sont disposées à l'intérieur de la pièce de socle (1) ou de la lampe (3).
8. Lampe selon l'une des revendications précédentes, caractérisée en ce que les tiges (4) sont constituées par des tubes à travers lesquels sont insérés les conducteurs électriques.
9. Lampe selon l'une des revendications précédentes, dans laquelle la lampe peut être raccordée à une basse tension électrique, caractérisée en ce que les tiges (4) sont constituées d'un matériau électriquement conducteur, que les tiges (4) sont montées avec isolement électrique sur la pièce de socle (1) et la lampe (3) et présente des dispositifs de raccordement conducteur montés en particulier à l'intérieur de la pièce de socle (1) et de la lampe (3).
10. Lampe selon l'une des revendications 1 à 9, caractérisée en ce que les surépaisseurs sphériques (5) présentent chacune au moins un écrou (11), lesquels sont orientés avec leur axe longitudinal parallèle à l'axe longitudinal des tiges (4), les écrous (11) étant disposés dans les deux surépaisseurs sphériques (5) de chaque tige (4), d'une manière identique l'un par rapport à l'autre, tandis que les broches de guidage (12) sont disposées sur les fixations en forme de calotte sphérique et s'engagent chacune longitudinalement dans un écrou (11) avec possibilité de réglage et que les surépaisseurs sphériques (5) peuvent tourner autour de l'axe longitudinal des broches de guidage (12) s'engageant dans les écrous (11).
11. Lampe selon la revendication 10, caractérisée en que les broches de guidage (12) disposées dans la zone de la pièce de socle (1) ou de la lampe (3) sur les fixations sont réalisées chaque fois en une pièce par assemblage pour former une unité de montage, et sont fixées aux fixations correspondantes.
12. Lampe selon la revendication 11, dans laquelle les surépaisseurs sphériques sont montées avec possibilité de serrage et de rotation sur rotule sphérique entre une partie de paroi de la pièce de socle ou de la lampe et une plaque de compression et que les tiges traversent des alésages dans les parties de paroi précitées et les plaques de compression avec un certain jeu, tandis que les surépaisseurs sphériques prennent appui sur les bords tournés vers elles des alésages dont le diamètre est plus faible que celui des surépaisseurs sphériques, caractérisée en ce que les broches de' guidage (12) assemblées pour former une unité de montage, sont insérées chaque fois entre une partie de paroi précitée (6 ou 7) et une plaque de compression (9).
13. Lampe selon la revendication 12, dans laquelle les plaques de parois et les plaques de compression qui leur correspondent sont traversées, notamment, par une vis de serrage disposée au centre des tiges caractérisée en ce que l'unité de montage des broches de guidage présente un alésage correspondant à la vis de serrage et est emboîtée sur la vis de serrage.
14. Lampe selon la revendication 13, caractérisée en ce que l'unité de 10 montage des broches de guidage, présentant en son centre un alésage (14), est emboîtée en particulier sans possibilité de rotation sur une broche (15), disposée en particulier au centre, entre les tiges (4) et formée sur une partie de paroi (6 ou 7) ou une plaque de compression (9).
15. Lampe selon la revendication 13 ou 14, caractérisée en ce que les broches de guidage 12 sont disposées avec une orientation radiale par rapport à l'alésage (14).
16. Lampe selon l'une des revendications précédentes, caractérisée par des broches de guidage (12), formées sur les fixations en forme de calotte sphérique et orientées radialement vers l'intérieur.
EP85113677A 1984-11-29 1985-10-28 Lampe de bureau Expired - Lifetime EP0183065B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85113677T ATE49801T1 (de) 1984-11-29 1985-10-28 Elektrische schreibtischleuchte oder dergleichen.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3443505 1984-11-29
DE19843443505 DE3443505A1 (de) 1984-11-29 1984-11-29 Elektrische schreibtischleuchte oder dergleichen
DE3512145 1985-04-03
DE19853512145 DE3512145A1 (de) 1985-04-03 1985-04-03 Elektrische schreibtischleuchte oder dergleichen

Publications (3)

Publication Number Publication Date
EP0183065A2 EP0183065A2 (fr) 1986-06-04
EP0183065A3 EP0183065A3 (en) 1988-05-04
EP0183065B1 true EP0183065B1 (fr) 1990-01-24

Family

ID=25826913

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85113677A Expired - Lifetime EP0183065B1 (fr) 1984-11-29 1985-10-28 Lampe de bureau

Country Status (3)

Country Link
EP (1) EP0183065B1 (fr)
CA (1) CA1262451A (fr)
DE (1) DE3575598D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2979413A1 (fr) * 2011-08-29 2013-03-01 Chantal Jacqueline Ghislaine Dirand Une lampe de table composee d'un pied deformable
JP5985821B2 (ja) * 2011-12-28 2016-09-06 スガツネ工業株式会社 複合リンク機構

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR394278A (fr) * 1907-09-17 1909-01-19 Clifford Robert Stephen John H Mécanisme à mouvement à ressort universel parallèle
FR1091160A (fr) * 1954-01-05 1955-04-07 Appareil d'éclairage, notamment pour salles d'opérations
US3034809A (en) * 1960-08-08 1962-05-15 Greenberg Harold Jay Universal ball and socket joint
EP0114327B1 (fr) * 1983-01-19 1987-03-18 Carl Schenck Ag Rotule sans jeu, en particulier pour dispositifs d'essai et ensemble rotule comportant de telles rotules
US4595970A (en) * 1984-06-08 1986-06-17 Hauserman, Inc. Lamp

Also Published As

Publication number Publication date
DE3575598D1 (de) 1990-03-01
EP0183065A3 (en) 1988-05-04
EP0183065A2 (fr) 1986-06-04
CA1262451A (fr) 1989-10-24

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