EP0476316A1 - Work- or office table - Google Patents

Work- or office table Download PDF

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Publication number
EP0476316A1
EP0476316A1 EP91113756A EP91113756A EP0476316A1 EP 0476316 A1 EP0476316 A1 EP 0476316A1 EP 91113756 A EP91113756 A EP 91113756A EP 91113756 A EP91113756 A EP 91113756A EP 0476316 A1 EP0476316 A1 EP 0476316A1
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EP
European Patent Office
Prior art keywords
support arm
work
dovetail guide
drive
office table
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.)
Granted
Application number
EP91113756A
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German (de)
French (fr)
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EP0476316B1 (en
Inventor
Daniel Korb
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.)
Dyes Bueromobelfabrik GmbH
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Dyes Bueromobelfabrik GmbH
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Application filed by Dyes Bueromobelfabrik GmbH filed Critical Dyes Bueromobelfabrik GmbH
Publication of EP0476316A1 publication Critical patent/EP0476316A1/en
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Publication of EP0476316B1 publication Critical patent/EP0476316B1/en
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B17/00—Writing-tables
    • A47B17/02—Writing-tables with vertically-adjustable parts
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2200/00—General construction of tables or desks
    • A47B2200/0011—Underframes
    • A47B2200/0013—Desks with central bearing beams

Definitions

  • the invention relates to a work or office table with a height and / or incline adjustable worktop, which is supported by two pairs of pivotable support arms on the crossbar of the table frame, one pair of the support arms to the front and the other pair of the support arms to the rear the worktop are directed and there are articulated on slides, which are adjustable on the underside of the worktop in guide rails running from the front to the rear, in which an arcuate, convex arched web is arranged on the longitudinal sides of the crossbar per support arm, and in which the Support arms are pivotable by means of a drive with a drive gear.
  • Such a work or office table is known from DE-OS 39 33 237.
  • the table frame consists of two side walls, the upper ends of which are connected to each other by means of the crossbar.
  • On the crossbar one end of the support arms is articulated, while the other ends are supported in an articulated manner on the worktop or on connecting blocks adjustable in guide rails. Threaded rods are provided as drive elements, on which the connection blocks can be adjusted in pairs or together.
  • the long sides of the trough-shaped crossbar are designed as hollow bodies. It is also known from this to form a dovetail guide web in a U-shape.
  • the inclusion of a worm wheel, which is in engagement with a worm shaft, in the drive for the support arms can also be found in this prior art.
  • the support arms taper to the ends facing the worktop and run out in articulated lugs in order to attach the support arms to the worktop in an articulated manner.
  • a work or office table with pairs of support arms for the worktop is also known from DE-OS 30 39 180.
  • the support arms which can be adjusted in pairs, can be pivoted together or in pairs in order to change the height and / or the inclination of the worktop.
  • drive elements with threaded rods and adjustable threaded blocks thereon and a pair of scissors for each support arm are provided. This expenditure on drive elements is increased by the coupling elements which are required for the simultaneous pivoting of the pair of support arms assigned to one side of the worktop. This effort is justified only if the height and / or the inclination of the worktop has to be changed frequently.
  • the support arms designed in this way are not advantageous from a design point of view.
  • each support arm is composed of two shell-shaped support arm halves and the crossbar faces an arcuate, concave curved part-dovetail guide groove forms which surrounds the dovetail guide bar and pivotally attaches the support arm to the dovetail guide bar, and that each support arm receives a self-locking drive which can be driven by means of a drive shaft and which engages with the toothing of the dovetail guide bar by means of at least one driven gear.
  • the support arm receives the entire drive for each support arm, so that only the access to the drive shaft is visible.
  • the drive shafts of the support arms can be coupled as required and the various setting options for the worktop can be achieved.
  • the pivoting of the support arms on the table frame is improved, since there is extensive support during the entire pivoting movement of the support arms.
  • the ends of the support arms facing the crossbar can fully cover the dovetail guide webs, so that an elegant transition between the crossbar and the support arms is also obtained.
  • This transition is also adapted and optimized to the swiveling movement in that the dovetail guide web is U-shaped, the side legs merging into web ends that are angled outward at right angles, and that two toothings are arranged between the side legs of the dovetail guide web are engaged with two output gears, which on one in the support arm halves are rotatably mounted output shaft.
  • connection between the crossbeam and the dovetail guide webs is made more stable in that the long sides of the trough-shaped crossbeam have side walls designed as hollow profiles, into which insert connectors can be inserted, and in that the dovetail guide webs are connected through the side walls of the crossbar to the inserted insert connectors , e.g. are screwed.
  • the drive in the support arm is designed such that a worm wheel is arranged on the output shaft in a rotationally fixed manner between the two output gears, which worm is in engagement with a worm shaft rotatably mounted on the worm arm halves so that the worm shaft rotatably carries a toothed belt wheel , which is in operative connection via an endless toothed belt with a drive toothed belt wheel, and that the drive toothed belt wheel is seated in a rotationally fixed manner on the drive shaft which is rotatably mounted in the region of the end of the support arm facing the worktop and is accessible from the outside of the support arm. Since the drive shafts are arranged in the region of the ends of the support arms facing the worktop, they can also be easily operated manually.
  • the support of the support arms on the dovetail guide webs is further improved according to a further development in that two support rollers are rotatably mounted in the support arm halves, which protrude into the partial dovetail guide grooves on both sides of the driven gears and on the end faces of the web ends of the dovetail - Support the guide bar.
  • the drive shaft, the output shaft and the worm shaft are mounted in sleeve-shaped bearing approaches of the support arm halves, it also being necessary for the drive shaft to protrude from the support arm at least at one end with a coupling section.
  • the structural design of the support arm is such that the drive shaft, the output shaft and the support rollers are aligned with their axes of rotation parallel to one another and parallel to the longitudinal axis of the crossbar and perpendicular to the parting plane of the support arm halves, and that the drive shaft and the output shaft in one Partition plane vertical center plane of the support arm are arranged and that the support rollers are symmetrical about this center plane.
  • the design is also such that the support arms taper towards the ends facing the worktop and are provided with hinged straps.
  • the drive can be simplified in that the drive shafts of the front arms and the drive shafts of the support arms assigned to the rear of the worktop are each connected to one another in a rotationally fixed manner by means of a coupling rod and can be driven together, since the pairs of support arms are then always pivoted equally.
  • the coupling rods can be driven individually and optionally in one or the other direction of rotation, then either the front or the back of the worktop can be raised or lowered.
  • the coupling rods can be driven jointly and optionally in one or the other direction of rotation, then the entire worktop can optionally be raised or lowered. This can also be done optionally with the individual drive of the coupling rods.
  • the coupling rods can be driven jointly and optionally in the same or in opposite directions of rotation. This also enables counter-movements of the front and rear of the worktop to be realized.
  • Fig. 1 the table frame 10 of a work or office table is shown in a perspective front view.
  • the crossbar 11 firmly connects the upper ends of the table legs 54 to one another.
  • the short foot elements 55 are attached directed towards the rear of the work or office table, while the long foot elements 56 extend towards the front.
  • the end faces of the crossbar 11 are covered by covers 19.
  • the worktop carries on its underside the guide rails 52 directed from the front to the rear, in which slides are adjustably guided. These slides are articulated to the link plates 53, which are formed on the facing ends of the four support arms 20.
  • the crossmember 11 has on its longitudinal edges formed as hollow profiles side walls 12 and 13, on which dovetail guide webs are attached for pivotally mounting the support arms 20, as will be shown.
  • the crossbar 11 forms with the two side walls 12 and 13 a cable channel which can be closed by means of the cover 17.
  • the support arms 20 are each composed of the two shell-shaped support arm halves 21 and 22 which receive an individually drivable, self-locking drive.
  • FIGS. 2 and 3 show the attachment of the support arms 20 to the crossbar 11 and the structure of the drive integrated in the support arm 20 for pivoting the support arm 20.
  • Insert connectors 18, which extend as far as the connection points of the support arms 20, are inserted into the end in the side walls 12 and 13 designed as hollow profiles.
  • the insert connectors 18 are adapted in cross section to the cross section of the hollow profiles.
  • hollow profiles are formed which have a semicircular cross section.
  • the convexly curved sections 14 are turned outwards, while the straight, vertical sections 15 laterally delimit the cable duct.
  • the transitions from the convexly curved sections 14 to the straight vertical sections 15 are formed in the region of the open upper side of the crossbar 11 as stepped connecting sections 16, which latch a connecting web or a connecting spring of the cover 17.
  • the cross-beam 11 can be produced in one piece as a sheet-metal profile section.
  • the dovetail guide webs 44 are attached to the convexly curved sections 14, the fastening screws extending through the side walls 12 and 13 and being screwed into threaded receptacles or insert connectors 18.
  • the dovetail guide webs 44 are arcuate and convex, so that they form a swivel path for the support arms 20.
  • the support arm halves 21 and 22 are directed towards each other with the open sides, form a receiving space for the drive and run facing the crossbar 11 in partial dovetail guide grooves 23 and 24, which enclose the dovetail guide web 44 with the web ends 50 on its side legs . Between the side legs of the dovetail guide web 44, following the side legs, run the two correspondingly extending toothings 42 and 43, which are inserted or integrally formed on the dovetail guide web 44.
  • the gears 40 and 41 are engaged, which are non-rotatably seated on the output shaft 38.
  • the output shaft 38 is rotatably mounted in the sleeve-shaped bearing lugs 36 and 37 of the support arm halves 21 and 22. Between the two gears 40 and 41, the output shaft 38 rotatably carries the worm gear 39, which is in engagement with the worm 35.
  • the worm 35 is non-rotatably seated on the bearing shaft 45, which is also at least partially rotatably supported in the support arm halves 21 and 22 by means of bearing bushes 49.
  • the bearing shaft 45 rotatably supports the toothed belt wheel 46.
  • the drive shaft 30 with the fixed drive toothed belt wheel 33 is rotatably mounted in the bearing lugs 28 and 29. As the ends of the drive shaft 30 show, it can be actuated from the outside of the support arm 20.
  • the bearing section 32 is flush with the support arm half 22, while the other end projects as a coupling section 31 on the support arm half 21 and can be used to connect the coupling rod 51.
  • the drive toothed belt wheel 33 is operatively connected to the toothed belt wheel 46 via the endless toothed belt 34.
  • the two support rollers 47 and 48 are mounted in the support arm halves 21 and 22 so that they protrude on both sides of the gears 40 and 41 and are supported on the end faces of the web ends 50 of the dovetail guide web 44.
  • the two support arm halves 21 and 22 are connected to one another by connecting screws 27 which are guided in screw connections 26 of the support arm half 22 and are screwed into the threaded connection 25 of the support arm half 21.
  • This drive is self-locking due to the large reduction achieved via the worm 35 and the worm wheel 39, so that the drive is not actuated in the lowering direction even when the worktop is loaded.
  • the pairs of support arms 20 can be pivoted individually or together by the coupling rods 51, the coupling rods 51 being able to be actuated in two directions of rotation. It is possible to raise or lower only the front of the worktop or only the back of the worktop. With the simultaneous actuation of the coupling rods 51, it is possible to raise or lower the worktop as a whole regardless of its set inclination. Yes, even an opposing adjustment of the front and the back of the worktop is possible only through the simultaneous but opposite pivoting of the support arms 20.

Abstract

The invention relates to a work or office table having a worktop which is adjustable in height and/or inclination and is supported on the cross-beam (11) of the table frame (10) via two pairs of pivotable bearing arms (20), one pair of the bearing arms (20) being directed towards the front side and the other pair of the bearing arms (20) towards the rear side of the worktop and being hinged there on slides which are adjustable on the underside of the worktop in guide rails (52) extending from the front side to the rear side. Arranged on the longitudinal sides of the cross-beam (11) per bearing arm (20) is an arcuate, convexly curved web (44), and the bearing arms (20) are pivotable by means of a drive with a driving gear wheel (42, 43). A simple drive for pivoting the bearing arms is provided in that the webs are constructed as dovetail guide webs (44) which are fitted with at least one toothing (42, 43), in that each bearing arm (20) is composed of two shell-shaped bearing arm halves (21, 22) and, facing the cross-beam (11), forms an arcuate, concavely curved partial dovetail guide groove (23, 24) which surrounds the dovetail guide web (44) and fixes the bearing arm (20) pivotably on the dovetail guide web (44), and in that each bearing arm (20) receives a self-locking drive which can be driven by means of a drive shaft (38) and is in engagement with the toothing (42, 43) of the dovetail guide web (44) by means of at least one driven gear wheel (40, 41). <IMAGE>

Description

Die Erfindung betrifft einen Arbeits- oder Bürotisch mit einer in der Höhe und/oder Neigung verstellbaren Arbeitsplatte, die über zwei Paare von schwenkbaren Tragarmen an der Quertraverse des Tischgestelles abgestützt ist, wobei ein Paar der Tragarme zur Vorderseite und das andere Paar der Tragarme zur Rückseite der Arbeitsplatte gerichtet sind und dort an Schlitten angelenkt sind, welche auf der Unterseite der Arbeitsplatte in von der Vorderseite zur Rückseite verlaufenden Führungsschienen verstellbar sind, bei dem an den Längsseiten der Quertraverse pro Tragarm ein kreisbogenförmiger, konvex gewölbter Steg angeordnet ist, und bei dem die Tragarme mittels eines Antriebes mit Antriebszahnrad verschwenkbar sind.The invention relates to a work or office table with a height and / or incline adjustable worktop, which is supported by two pairs of pivotable support arms on the crossbar of the table frame, one pair of the support arms to the front and the other pair of the support arms to the rear the worktop are directed and there are articulated on slides, which are adjustable on the underside of the worktop in guide rails running from the front to the rear, in which an arcuate, convex arched web is arranged on the longitudinal sides of the crossbar per support arm, and in which the Support arms are pivotable by means of a drive with a drive gear.

Ein derartiger Arbeits- oder Bürotisch ist aus der DE-OS 39 33 237 bekannt. Das Tischgestell besteht aus zwei Seitenwangen, deren obere Enden mittels der Quertraverse miteinander verbunden sind. An der Quertraverse sind die einen Enden der Tragarme angelenkt, während sich die anderen Enden gelenkig an der Arbeitsplatte oder an in Führungsschienen verstellbaren Anschlußblöcken gelenkig abstützen. Als Antriebselemente sind Gewindestangen vorgesehen, auf denen die Anschlußblöcke paarweise oder gemeinsam verstellbar sind. Ein derartiger Aufwand ist nur vertretbar, wenn die Höhe und/oder Neigung der Arbeitsplatte häufig verändert werden muß.Such a work or office table is known from DE-OS 39 33 237. The table frame consists of two side walls, the upper ends of which are connected to each other by means of the crossbar. On the crossbar, one end of the support arms is articulated, while the other ends are supported in an articulated manner on the worktop or on connecting blocks adjustable in guide rails. Threaded rods are provided as drive elements, on which the connection blocks can be adjusted in pairs or together. Such an effort is only justifiable if the height and / or inclination of the worktop has to be changed frequently.

Bei diesem bekannten Arbeits- oder Bürotisch sind die Längsseiten der wannenförmigen Quertraverse als Hohlkörper ausgebildet. Außerdem ist es daraus bekannt, einen Schwalbenschwanz-Führungssteg U-förmig auszubilden. Auch die Einbeziehung eines Schneckenrades, das mit einer Schneckenwelle im Eingriff steht, in den Antrieb für die Tragarme ist diesem Stand der Technik zu entnehmen. Die Tragarme verjüngen sich zu den der Arbeitsplatte zugekehrten Enden und laufen in Gelenklaschen aus, um die Tragarme an der Arbeitsplatte gelenkig anzubringen.In this known work or office table, the long sides of the trough-shaped crossbar are designed as hollow bodies. It is also known from this to form a dovetail guide web in a U-shape. The inclusion of a worm wheel, which is in engagement with a worm shaft, in the drive for the support arms can also be found in this prior art. The support arms taper to the ends facing the worktop and run out in articulated lugs in order to attach the support arms to the worktop in an articulated manner.

Ein Arbeits- oder Bürotisch mit Paaren von Tragarmen für die Arbeitsplatte ist auch aus der DE-OS 30 39 180 bekannt. Die paarweise höhenverstellbaren Tragarme können gemeinsam oder paarweise verschwenkt werden, um die Höhe und/oder die Neigung der Arbeitsplatte zu ändern. Zum Verschwenken der Tragarme sind Antriebselemente mit Gewindestangen und darauf verstellbaren Gewindeblöcken und für jeden Tragarm eine aus zwei Hebeln gebildete Schere vorgesehen. Dieser Aufwand an Antriebselementen wird durch die Kopplungselemente erhöht, die zum gleichzeitigen Verschwenken des einer Seite der Arbeitsplatte zugeordneten Paares von Tragarmen erforderlich sind. Dieser Aufwand rechtfertigt sich nur, wenn die Arbeitsplatte häufig in der Höhe und/oder der Neigung verändert werden muß. Außerdem sind die so ausgebildeten Tragarme vom gestalterischen Standpunkt aus nicht vorteilhaft.A work or office table with pairs of support arms for the worktop is also known from DE-OS 30 39 180. The support arms, which can be adjusted in pairs, can be pivoted together or in pairs in order to change the height and / or the inclination of the worktop. For pivoting the support arms, drive elements with threaded rods and adjustable threaded blocks thereon and a pair of scissors for each support arm are provided. This expenditure on drive elements is increased by the coupling elements which are required for the simultaneous pivoting of the pair of support arms assigned to one side of the worktop. This effort is justified only if the height and / or the inclination of the worktop has to be changed frequently. In addition, the support arms designed in this way are not advantageous from a design point of view.

Außerdem sind bei diesem bekannten Arbeits-oder Bürotisch zusätzliche Merkmale erforderlich, daß auch die Schwenkstellung der Tragarme an der Quertraverse gesichert wird. Dazu sind zusätzliche Führungsarme oder Antriebseinrichtungen im Bereich des Tischgestelles erforderlich.In addition, additional features are required in this known work or office table that the pivoting position of the support arms on the crossbar is secured. This requires additional guide arms or drive devices in the area of the table frame.

Es ist Aufgabe der Erfindung, bei einem Arbeits- oder Bürotisch der eingangs erwähnten Art einen einfachen Antrieb für die Tragarme zu schaffen, der sowohl am Tischgestell als auch an der Arbeitsplatte nur einfache Teile erfordert und so untergebracht werden kann, daß er das ästhetische Aussehen des Arbeits- oder Bürotisches nicht nachteilig beeinflußt.It is an object of the invention to provide a simple drive for the support arms in a work or office table of the type mentioned at the outset, which requires only simple parts both on the table frame and on the worktop and can be accommodated in such a way that it has the aesthetic appearance of Work or office tables are not adversely affected.

Diese Aufgabe wird nach der Erfindung dadurch gelöst, daß die Stege als Schwalbenschwanz-Führungsstege ausgebildet sind, die mit mindestens einer Verzahnung versehen sind, daß jeder Tragarm aus zwei schalenförmigen Tragarmhälften zusammengesetzt ist und der Quertraverse zugekehrt eine kreisbogenförmige, konkav gewölbte Teil-Schwalbenschwanz-Führungsnut bildet, die den Schwalbenschwanz-Führungssteg umschließt und den Tragarm verschwenkbar an dem Schwalbenschwanz-Führungssteg festlegt, und daß jeder Tragarm einen selbsthemmenden, mittels einer Antriebswelle antreibbaren Antrieb aufnimmt, der mittels mindestens eines Abtriebszahnrades mit der Verzahnung des Schwalbenschwanz-Führungssteges im Eingriff steht.This object is achieved according to the invention in that the webs are designed as dovetail guide webs, which are provided with at least one toothing, that each support arm is composed of two shell-shaped support arm halves and the crossbar faces an arcuate, concave curved part-dovetail guide groove forms which surrounds the dovetail guide bar and pivotally attaches the support arm to the dovetail guide bar, and that each support arm receives a self-locking drive which can be driven by means of a drive shaft and which engages with the toothing of the dovetail guide bar by means of at least one driven gear.

An dem Tischgestell brauchen nur die Schwalbenschwanz-Führunsstege angebracht zu werden. Der Tragarm nimmt den gesamten Antrieb für jeden Tragarm auf, so daß davon nur der Zugang zur Antriebswelle einsehbar ist. Die Antriebswellen der Tragarme können beliebig gekoppelt und so die verschiedenen Einstellmöglichkeiten für die Arbeitsplatte erreicht werden. Die Schwenklagerung der Tragarme an dem Tischgestell ist verbessert, da eine großflächige Abstützung während der gesamten Schwenkbewegung der Tragarme gegeben ist. Dabei können die der Quertraverse zugekehrten Enden der Tragarme die Schwalbenschwanz-Führungsstege voll abdecken, so daß auch ein formschöner Übergang zwischen der Quertraverse und den Tragarmen erhalten wird. Dieser Übergang wird zudem dadurch noch an die Schwenkbewegung angepaßt und optimiert, daß der Schwalbenschwanz-Führungssteg U-förmig ausgebildet ist, wobei die Seitenschenkel in rechtwinklig nach außen abgewinkelte Stegenden übergehen, und daß zwischen den Seitenschenkeln des Schwalbenschwanz-Führungssteges zwei Verzahnungen angeordnet sind, die mit zwei Abtriebszahnrädern im Eingriff stehen, welche auf einer in den Tragarmhälften drehbar gelagerten Abtriebswelle drehfest angebracht sind.Only the dovetail guide bars need to be attached to the table frame. The support arm receives the entire drive for each support arm, so that only the access to the drive shaft is visible. The drive shafts of the support arms can be coupled as required and the various setting options for the worktop can be achieved. The pivoting of the support arms on the table frame is improved, since there is extensive support during the entire pivoting movement of the support arms. The ends of the support arms facing the crossbar can fully cover the dovetail guide webs, so that an elegant transition between the crossbar and the support arms is also obtained. This transition is also adapted and optimized to the swiveling movement in that the dovetail guide web is U-shaped, the side legs merging into web ends that are angled outward at right angles, and that two toothings are arranged between the side legs of the dovetail guide web are engaged with two output gears, which on one in the support arm halves are rotatably mounted output shaft.

Die Verbindung zwischen der Quertraverse und den Schwalbenschwanz-Führungsstegen wird dadurch stabiler, daß die Längsseiten der wannenförmig ausgebildeten Quertraverse als Hohlprofile ausgebildete Seitenwände aufweisen, in die Einsatzverbinder einschiebbar sind, und daß die Schwalbenschwanz-Führungsstege durch die Seitenwände der Quertraverse hindurch mit den eingeschobenen Einsatzverbindern verbunden, z.B. verschraubt sind.The connection between the crossbeam and the dovetail guide webs is made more stable in that the long sides of the trough-shaped crossbeam have side walls designed as hollow profiles, into which insert connectors can be inserted, and in that the dovetail guide webs are connected through the side walls of the crossbar to the inserted insert connectors , e.g. are screwed.

Der Antrieb im Tragarm ist nach einer Ausgestaltung so ausgeführt, daß zwischen den beiden Abtriebszahnrädern ein Schneckenrad auf der Abtriebswelle drehfest angeordnet ist, welches mit einer auf einer in den Tragarmhälften drehbar gelagerten Schneckenwelle drehfest aufgebrachten Schnecke im Eingriff steht, daß die Schneckenwelle drehfest ein Zahnriemenrad trägt, das über einen endlosen Zahnriemen mit einem Antriebs-Zahnriemenrad in Wirkverbindung steht, und daß das Antriebs-Zahnriemenrad drehfest auf der Antriebswelle sitzt, die im Bereich des der Arbeitsplatte zugekehrten Endes des Tragarmes drehbar gelagert und von der Außenseite des Tragarmes aus zugänglich ist. Da die Antriebswellen im Bereich der der Arbeitsplatte zugekehrten Enden der Tragarme angeordnet sind, können sie auch leicht manuell betätigt werden.According to one embodiment, the drive in the support arm is designed such that a worm wheel is arranged on the output shaft in a rotationally fixed manner between the two output gears, which worm is in engagement with a worm shaft rotatably mounted on the worm arm halves so that the worm shaft rotatably carries a toothed belt wheel , which is in operative connection via an endless toothed belt with a drive toothed belt wheel, and that the drive toothed belt wheel is seated in a rotationally fixed manner on the drive shaft which is rotatably mounted in the region of the end of the support arm facing the worktop and is accessible from the outside of the support arm. Since the drive shafts are arranged in the region of the ends of the support arms facing the worktop, they can also be easily operated manually.

Die Abstützung der Tragarme an den Schwalbenschwanz-Führungsstegen wird nach einer Weiterbildung dadurch noch verbessert, daß in den Tragarmhälften zwei Abstützwalzen drehbar gelagert sind, die zu beiden Seiten der Abtriebszahnräder in die Teil-Schwalbenschwanz-Führungsnuten ragen und sich an den Stirnseiten der Stegenden des Schwalbenschwanz-Führungssteges abstützen.The support of the support arms on the dovetail guide webs is further improved according to a further development in that two support rollers are rotatably mounted in the support arm halves, which protrude into the partial dovetail guide grooves on both sides of the driven gears and on the end faces of the web ends of the dovetail - Support the guide bar.

Für die benötigten Drehlagerungen ist vorgesehen, daß die Antriebswelle, die Abtriebswelle und die Schneckenwelle in hülsenförmigen Lageransätzen der Tragarmhälften gelagert sind, wobei zudem erforderlich ist, daß die Antriebswelle zumindest an einem Ende mit einem Koppelabschnitt aus dem Tragarm ragt.For the required rotary bearings, it is provided that the drive shaft, the output shaft and the worm shaft are mounted in sleeve-shaped bearing approaches of the support arm halves, it also being necessary for the drive shaft to protrude from the support arm at least at one end with a coupling section.

Nach einer Ausgestaltung ist der konstruktive Aufbau des Tragarmes so, daß die Antriebswelle, die Abtriebswelle und die Abstützwalzen mit ihren Drehachsen parallel zueinander und parallel zur Längsachse der Quertraverse sowie senkrecht zur Trennebene der Tragarmhälften ausgerichtet sind, sowie daß die Antriebswelle und die Abtriebswelle in einer zur Trennebene senkrechten Mittelebene des Tragarmes angeordnet sind und daß die Abstützwalzen symmetrisch zu dieser Mittelebene liegen.According to one embodiment, the structural design of the support arm is such that the drive shaft, the output shaft and the support rollers are aligned with their axes of rotation parallel to one another and parallel to the longitudinal axis of the crossbar and perpendicular to the parting plane of the support arm halves, and that the drive shaft and the output shaft in one Partition plane vertical center plane of the support arm are arranged and that the support rollers are symmetrical about this center plane.

Aus ästhetischen Gründen ist die Ausgestaltung weiterhin so, daß sich die Tragarme zu den der Arbeitsplatte zugekehrten Enden hin verjüngen und mit Gelenklaschen versehen sind. Der Antrieb kann dadurch vereinfacht werden, daß die Antriebswellen der der Vorderseite und die Antriebswellen der der Rückseite der Arbeitsplatte zugeordneten Tragarme jeweils mittels einer Koppelstange drehfest miteinander verbunden und gemeinsam antreibbar sind, da dann die Paare von Tragarmen stets gleich verschwenkt werden.For aesthetic reasons, the design is also such that the support arms taper towards the ends facing the worktop and are provided with hinged straps. The drive can be simplified in that the drive shafts of the front arms and the drive shafts of the support arms assigned to the rear of the worktop are each connected to one another in a rotationally fixed manner by means of a coupling rod and can be driven together, since the pairs of support arms are then always pivoted equally.

Ist dabei vorgesehen, daß die Koppelstangen einzeln und wahlweise in der einen oder anderen Drehrichtung antreibbar sind, dann kann wahlweise die Vorderseite oder die Rückseite der Arbeitsplatte angehoben oder gesenkt werden.If it is provided that the coupling rods can be driven individually and optionally in one or the other direction of rotation, then either the front or the back of the worktop can be raised or lowered.

Ist dagegen vorgesehen, daß die Koppelstangen gemeinsam und wahlweise in der einen oder anderen Drehrichtung antreibbar sind, dann kann die gesamte Arbeitsplatte wahlweise angehoben oder abgesenkt werden. Dies läßt sich mit dem Einzelantrieb der Koppelstangen auch wahlweise ausführen.If, on the other hand, it is provided that the coupling rods can be driven jointly and optionally in one or the other direction of rotation, then the entire worktop can optionally be raised or lowered. This can also be done optionally with the individual drive of the coupling rods.

Schließlich kann auch vorgesehen sein, daß die Koppelstangen gemeinsam und wahlweise in derselben oder in entgegengesetzten Drehrichtungen antreibbar sind. Damit lassen sich auch gegenläufige Bewegungen der Vorderseite und der Rückseite der Arbeitsplatte realisieren.Finally, it can also be provided that the coupling rods can be driven jointly and optionally in the same or in opposite directions of rotation. This also enables counter-movements of the front and rear of the worktop to be realized.

Die Erfindung wird anhand eines in den Zeichnungen dargestellten Ausführungsbeispiels näher erläutert. Es zeigt:

  • Fig. 1 in perspektivischer Ansicht ein Tischgestell eines Arbeits- oder Bürotisches mit vier Tragarmen,
  • Fig. 2 einen Schnitt durch einen Tragarm mit individuellem Antrieb, der senkrecht zur Trennebene der beiden Tragarmhälften verläuft, und
  • Fig. 3 einen Schnitt parallel zur Trennebene der Tragarmhälften.
The invention is explained in more detail using an exemplary embodiment shown in the drawings. It shows:
  • 1 is a perspective view of a table frame of a work or office table with four support arms,
  • Fig. 2 shows a section through a support arm with an individual drive, which runs perpendicular to the parting plane of the two support arm halves, and
  • Fig. 3 shows a section parallel to the parting plane of the support arm halves.

In Fig. 1 ist das Tischgestell 10 eines Arbeits-oder Bürotisches in perspektivischer Vorderansicht dargestellt. Die Quertraverse 11 verbindet die oberen Enden der Tischbeine 54 fest miteinander. An den unteren Enden der seitlichen Tischbeine 54 sind zur Rückseite des Arbeits- oder Bürotisches hin gerichtet die kurzen Fußelemente 55 angebracht, während sich die langen Fußelemente 56 zur Vorderseite hin erstrecken. Die Stirnseiten der Quertraverse 11 sind mittels Abdeckungen 19 abgedeckt.In Fig. 1 the table frame 10 of a work or office table is shown in a perspective front view. The crossbar 11 firmly connects the upper ends of the table legs 54 to one another. At the lower ends of the side table legs 54, the short foot elements 55 are attached directed towards the rear of the work or office table, while the long foot elements 56 extend towards the front. The end faces of the crossbar 11 are covered by covers 19.

Die nicht dargestellte Arbeitsplatte trägt an ihrer Unterseite die von der Vorderseite zur Rückseite gerichteten Führungsschienen 52, in denen Schlitten verstellbar geführt sind. Diese Schlitten sind mit den Gelenklaschen 53 gelenkig verbunden, die an den zugekehrten Enden der vier Tragarme 20 angeformt sind. Wie die Koppelstangen 51 zeigen, sind die beiden Tragarme 20 der Vorderseite und die beiden Tragarme 20 der Rückseite jeweils zu einem Paar gemeinsam verschwenkbarer Tragarme 20 verbunden. Die Quertraverse 11 hat an ihren Längskanten als Hohlprofile ausgebildete Seitenwände 12 und 13, an denen Schwalbenschwanz-Führungsstege zum verschwenkbaren Lagern der Tragarme 20 angebracht sind, wie noch gezeigt wird. Die Quertraverse 11 bildet mit den beiden Seitenwänden 12 und 13 einen Kabelkanal, der mittels des Deckels 17 verschlossen werden kann. Die Tragarme 20 sind jeweils aus den beiden schalenförmigen Tragarmhälften 21 und 22 zusammengesetzt, die einen individuell antreibbaren, selbsthemmenden Antrieb aufnehmen.The worktop, not shown, carries on its underside the guide rails 52 directed from the front to the rear, in which slides are adjustably guided. These slides are articulated to the link plates 53, which are formed on the facing ends of the four support arms 20. Like the coupling rods 51 show, the two support arms 20 on the front side and the two support arms 20 on the rear side are each connected to form a pair of jointly pivotable support arms 20. The crossmember 11 has on its longitudinal edges formed as hollow profiles side walls 12 and 13, on which dovetail guide webs are attached for pivotally mounting the support arms 20, as will be shown. The crossbar 11 forms with the two side walls 12 and 13 a cable channel which can be closed by means of the cover 17. The support arms 20 are each composed of the two shell-shaped support arm halves 21 and 22 which receive an individually drivable, self-locking drive.

Die beiden Schnitte nach den Fig. 2 und 3 lassen die Anbringung der Tragarme 20 an der Quertraverse 11 sowie den Aufbau des in den Tragarm 20 integrierten Antriebes zum Verschwenken des Tragarmes 20 erkennen. In die als Hohlprofile ausgebildeten Seitenwände 12 und 13 sind stirnseitig Einsatzverbinder 18 eingesteckt, die bis zu den Anbindungsstellen der Tragarme 20 reichen. Dabei sind die Einsatzverbinder 18 im Querschnitt auf den Querschnitt der Hohlprofile angepaßt. Im Ausführungsbeispiel werden Hohlprofile gebildet, die einen halbkreisförmigen Querschnitt aufweisen. Die konvex gewölbten Abschnitte 14 sind dabei nach außen gekehrt, während die geraden, vertikalen Abschnitte 15 den Kabelkanal seitlich begrenzen. Die Übergänge von den konvex gewölbten Abschnitten 14 zu den geraden vertikalen Abschnitten 15 sind im Bereich der offenen oberen Seite der Quertraverse 11 als abgesetzte Verbindungsabschnitte 16 ausgebildet, die einen Verbindungssteg oder eine Verbindungsfeder des Deckels 17 rastend aufnehmen. Wie der Schnitt nach Fig. 3 erkennen läßt, kann die Quertraverse 11 als Blechprofilabschnitt einstückig hergestellt werden.The two cuts according to FIGS. 2 and 3 show the attachment of the support arms 20 to the crossbar 11 and the structure of the drive integrated in the support arm 20 for pivoting the support arm 20. Insert connectors 18, which extend as far as the connection points of the support arms 20, are inserted into the end in the side walls 12 and 13 designed as hollow profiles. The insert connectors 18 are adapted in cross section to the cross section of the hollow profiles. In the exemplary embodiment, hollow profiles are formed which have a semicircular cross section. The convexly curved sections 14 are turned outwards, while the straight, vertical sections 15 laterally delimit the cable duct. The transitions from the convexly curved sections 14 to the straight vertical sections 15 are formed in the region of the open upper side of the crossbar 11 as stepped connecting sections 16, which latch a connecting web or a connecting spring of the cover 17. As can be seen from the section according to FIG. 3, the cross-beam 11 can be produced in one piece as a sheet-metal profile section.

An die konvex gewölbten Abschnitte 14 werden die Schwalbenschwanz-Führungsstege 44 angebracht, wobei sich die Befestigungsschrauben durch die Seitenwände 12 und 13 hindurch erstrekken und in Gewindeaufnahmen oder Einsatzverbinder 18 eingeschraubt sind. Die Schwalbenschwanz-Führungsstege 44 sind kreisbogenförmig und konvex gewölbt, so daß sie eine Schwenkbahn für die Tragarme 20 bilden. Die Tragarmhälften 21 und 22 sind mit den offenen Seiten gegeneinander gerichtet, bilden einen Aufnahmeraum für den Antrieb und laufen der Quertraverse 11 zugekehrt in Teil-Schwalbenschwanz-Führungsnuten 23 und 24 aus, die den Schwalbenschwanz-Führungssteg 44 mit den Stegenden 50 an seinen Seitenschenkeln umschließen. Zwischen den Seitenschenkeln des Schwalbenschwanz-Führungssteges 44 verlaufen im Anschluß an die Seitenschenkel die beiden entsprechend verlaufenden Verzahnungen 42 und 43, welche eingesetzt oder einstückig an dem Schwalbenschwanz-Führungssteg 44 angeformt sind.The dovetail guide webs 44 are attached to the convexly curved sections 14, the fastening screws extending through the side walls 12 and 13 and being screwed into threaded receptacles or insert connectors 18. The dovetail guide webs 44 are arcuate and convex, so that they form a swivel path for the support arms 20. The support arm halves 21 and 22 are directed towards each other with the open sides, form a receiving space for the drive and run facing the crossbar 11 in partial dovetail guide grooves 23 and 24, which enclose the dovetail guide web 44 with the web ends 50 on its side legs . Between the side legs of the dovetail guide web 44, following the side legs, run the two correspondingly extending toothings 42 and 43, which are inserted or integrally formed on the dovetail guide web 44.

Mit den beiden Verzahnungen 42 und 43 stehen die Zahnräder 40 und 41 im Eingriff, die drehfest auf der Abtriebswelle 38 sitzen. Die Abtriebswelle 38 ist in den hülsenförmigen Lageransätzen 36 und 37 der Tragarmhälften 21 und 22 drehbar gelagert. Zwischen den beiden Zahnrädern 40 und 41 trägt die Abtriebswelle 38 drehfest das Schnekkenrad 39, welches mit der Schnecke 35 im Eingriff steht. Die Schnecke 35 sitzt drehfest auf der Lagerwelle 45, die ebenfalls zumindest teilweise mittels Lagerbuchsen 49 in den Tragarmhälften 21 und 22 drehbar gelagert ist. Neben der Schnecke 35 trägt die Lagerwelle 45 drehfest das Zahnriemenrad 46. An den der Arbeitsplatte zugekehrten Enden des Tragarmes 20 ist in den Lageransätzen 28 und 29 die Antriebswelle 30 mit dem festsitzenden Antriebs-Zahnriemenrad 33 drehbar gelagert. Wie die enden der Antriebswelle 30 zeigen, kann diese von der Außenseite des Tragarmes 20 her betätigt werden. Der Lagerabschnitt 32 schließt dabei bündig mit der Tragarmhälfte 22 ab, während das andere Ende als Koppelabschnitt 31 an der Tragarmhälfte 21 absteht und zum Anschluß der Koppelstange 51 verwendet werden kann. Das Antriebs-Zahnriemenrad 33 steht über den endlosen Zahnriemen 34 mit dem Zahnriemenrad 46 in Wirkverbindung. Zur besseren Abstützung und Führung des Tragarmes 20 sind die beiden Abstützwalzen 47 und 48 in den Tragarmhälften 21 und 22 so gelagert, daß sie zu beiden Seiten der Zahnräder 40 und 41 vorstehen und sich an den Stirnseiten der Stegenden 50 des Schwalbenschwanz-Führungssteges 44 abstützen.With the two toothings 42 and 43, the gears 40 and 41 are engaged, which are non-rotatably seated on the output shaft 38. The output shaft 38 is rotatably mounted in the sleeve-shaped bearing lugs 36 and 37 of the support arm halves 21 and 22. Between the two gears 40 and 41, the output shaft 38 rotatably carries the worm gear 39, which is in engagement with the worm 35. The worm 35 is non-rotatably seated on the bearing shaft 45, which is also at least partially rotatably supported in the support arm halves 21 and 22 by means of bearing bushes 49. In addition to the worm 35, the bearing shaft 45 rotatably supports the toothed belt wheel 46. At the ends of the support arm 20 facing the worktop, the drive shaft 30 with the fixed drive toothed belt wheel 33 is rotatably mounted in the bearing lugs 28 and 29. As the ends of the drive shaft 30 show, it can be actuated from the outside of the support arm 20. The bearing section 32 is flush with the support arm half 22, while the other end projects as a coupling section 31 on the support arm half 21 and can be used to connect the coupling rod 51. The drive toothed belt wheel 33 is operatively connected to the toothed belt wheel 46 via the endless toothed belt 34. For better support and guidance of the support arm 20, the two support rollers 47 and 48 are mounted in the support arm halves 21 and 22 so that they protrude on both sides of the gears 40 and 41 and are supported on the end faces of the web ends 50 of the dovetail guide web 44.

Die beiden Tragarmhälften 21 und 22 werden durch Verbindungsschrauben 27 miteinander verbunden, die in Schraubstutzen 26 der Tragarmhälfte 22 geführt und in Gewindestutzen 25 der Tragarmhälfte 21 eingeschraubt sind.The two support arm halves 21 and 22 are connected to one another by connecting screws 27 which are guided in screw connections 26 of the support arm half 22 and are screwed into the threaded connection 25 of the support arm half 21.

Dieser Antrieb ist durch die über die Schnecke 35 und das Schneckenrad 39 erreichte große Untersetzung selbsthemmend, so daß selbst bei einer belasteten Arbeitsplatte der Antrieb nicht in Absenkrichtung betätigt wird.This drive is self-locking due to the large reduction achieved via the worm 35 and the worm wheel 39, so that the drive is not actuated in the lowering direction even when the worktop is loaded.

Durch die Koppelstangen 51 können die Paare der Tragarme 20 einzeln oder gemeinsam verschwenkt werden, wobei die Koppelstangen 51 in zwei Drehrichtungen betätigt werden können. So ist es möglich, nur die Vorderseite der Arbeitsplatte oder nur die Rückseite der Arbeitsplatte anzuheben oder abzusenken. Bei der gleichzeitigen Betätigung der bei den Koppelstangen 51 ist es möglich, die Arbeitsplatte unabhängig von ihrer eingestellten Neigung als Ganzes anzuheben oder abzusenken. Ja selbst eine gegenläufige Verstellung der Vorderseite und der Rückseite der Arbeitsplatte ist möglich allein durch die gleichzeitige, aber entgegengesetzte Verschwenkung der Tragarme 20.The pairs of support arms 20 can be pivoted individually or together by the coupling rods 51, the coupling rods 51 being able to be actuated in two directions of rotation. It is possible to raise or lower only the front of the worktop or only the back of the worktop. With the simultaneous actuation of the coupling rods 51, it is possible to raise or lower the worktop as a whole regardless of its set inclination. Yes, even an opposing adjustment of the front and the back of the worktop is possible only through the simultaneous but opposite pivoting of the support arms 20.

Claims (14)

1. Arbeits- oder Bürotisch mit einer in der Höhe und/oder Neigung verstellbaren Arbeitsplatte, die über zwei Paare von schwenkbaren Tragarmen (20) an der Quertraverse (11) des Tischgestelles (10) abgestützt ist, wobei ein Paar der Tragarme (20) zur Vorderseite und das andere Paar der Tragarme (20) zur Rückseite der Arbeitsplatte gerichtet sind und dort an Schlitten angelenkt sind, welche auf der Unterseite der Arbeitsplatte in von der Vorderseite zur Rückseite verlaufenden Führungsschienen (52) verstellbar sind, bei dem an den Längsseiten der Quertraverse (11) pro Tragarm (20) ein kreisbogenförmiger, konvex gewölbter Steg (44) angeordnet ist, und bei dem die Tragarme (20) mittels eines Antriebes mit Antriebszahnrad (42,43) verschwenkbar sind,
dadurch gekennzeichnet, daß die Stege als Schwalbenschwanz-Führungsstege (44) ausgebildet sind, die mit mindestens einer Verzahnung (42,43) versehen sind, daß jeder Tragarm (20) aus zwei schalenförmigen Tragarmhälften (21,22) zusammengesetzt ist und der Quertraverse (11) zugekehrt eine kreisbogenförmige, konkav gewölbte Teil-Schwalbenschwanz-Führungsnut (23,24) bildet, die den Schwalbenschwanz-Führungssteg (44) umschließt und den Tragarm (20) verschwenkbar an dem Schwalbenschwanz-Führungssteg (44) festlegt, und daß jeder Tragarm (20) einen selbsthemmenden, mittels einer Antriebswelle (38) antreibbaren Antrieb aufnimmt, der mittels mindestens eines Abtriebszahnrades (40,41) mit der Verzahnung (42,43) des Schwalbenschwanz-Führungssteges (44) im Eingriff steht. 1. work or office table with a height and / or incline adjustable worktop, which is supported by two pairs of pivotable support arms (20) on the crossbar (11) of the table frame (10), wherein a pair of the support arms (20) to the front and the other pair of support arms (20) are directed to the rear of the worktop and are articulated there on slides which are adjustable on the underside of the worktop in guide rails (52) running from the front to the rear, in which on the long sides of the Cross-beam (11) for each support arm (20) is an arcuate, convexly curved web (44), and in which the support arms (20) can be pivoted by means of a drive with a drive gear (42, 43),
characterized, that the webs are designed as dovetail guide webs (44) which are provided with at least one toothing (42, 43), that each support arm (20) is composed of two shell-shaped support arm halves (21, 22) and, facing the crossbar (11), forms an arcuate, concavely curved partial dovetail guide groove (23, 24) which surrounds the dovetail guide web (44) and fixes the support arm (20) pivotably on the dovetail guide web (44), and that each support arm (20) receives a self-locking drive which can be driven by means of a drive shaft (38) and which is toothed by means of at least one driven gear wheel (40, 41) (42,43) of the dovetail guide web (44) is engaged. 2. Arbeits- oder Bürotisch nach Anspruch 1, dadurch gekennzeichnet, daß die Längsseiten der wannenförmig ausgebildeten Quertraverse (11) als Hohlprofile ausgebildete Seitenwände (12,13) aufweisen, in die Einsatzverbinder (18) einschiebbar sind, und daß die Schwalbenschwanz-Führungsstege (44) durch die Seitenwände (12,13) der Quertraverse (11) hindurch mit den eingeschobenen Einsatzverbindern (18) verbunden, z.B. verschraubt sind. 2. work or office table according to claim 1, characterized in that the longitudinal sides of the trough-shaped cross-member (11) have side walls (12, 13) designed as hollow profiles, into which insert connectors (18) can be inserted, and that the dovetail guide webs (44) are connected, for example screwed, through the side walls (12, 13) of the crossbar (11) to the inserted insert connectors (18). 3. Arbeits- oder Bürotisch nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß der Schwalbenschwanz-Führungssteg (44) U-förmig ausgebildet ist, wobei die Seitenschenkel in rechtwinklig nach außen abgewinkelte Stegenden (50) übergehen, und daß zwischen den Seitenschenkeln des Schwalbenschwanz-Führungssteges (44) zwei Verzahnungen (42,44) angeordnet sind, die mit zwei Abtriebszahnrädern (40,41) im Eingriff stehen, welche auf einer in den Tragarmhälften (21,22) drehbar gelagerten Abtriebswelle (38) drehfest angebracht sind.3. work or office table according to claim 1 or 2,
characterized,
that the dovetail guide web (44) is U-shaped, the side legs transitioning into web ends (50) which are angled outwards at right angles, and that two toothings (42, 44) are arranged between the side legs of the dovetail guide web (44), which are in engagement with two output gearwheels (40, 41) which are mounted on an output shaft (38) rotatably mounted in the support arm halves (21, 22). 4. Arbeits- oder Bürotisch nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß zwischen den beiden Abtriebszahnrädern (40,41) ein Schneckenrad (39) auf der Abtriebswelle (38) drehfest angeordnet ist, welches mit einer auf einer in den Tragarmhälften (21,22) drehbar gelagerten Schneckenwelle (35) drehfest aufgebrachten Schnecke (40) im Eingriff steht, daß die Schneckenwelle (35) drehfest ein Zahnriemenrad (46) trägt, das über einen endlosen Zahnriemen (34) mit einem Antriebs-Zahnriemenrad (33) in Wirkverbindung steht, und daß das Antriebs-Zahnriemenrad (33) drehfest auf der Antriebswelle (30) sitzt, die im Bereich des der Arbeitsplatte zugekehrten Endes des Tragarmes (20) drehbar gelagert und von der Außenseite des Tragarmes (20) aus zugänglich ist. 4. Work or office table according to one of claims 1 to 3, characterized in that between the two output gears (40,41) a worm wheel (39) on the output shaft (38) is rotatably arranged, which with one on one in the support arm halves (21, 22) rotatably mounted worm shaft (35) rotatably mounted worm (40) is engaged, that the worm shaft (35) rotatably carries a toothed belt wheel (46), which is operatively connected via an endless toothed belt (34) to a drive toothed belt wheel (33), and that the drive toothed belt wheel (33) is non-rotatably seated on the drive shaft (30) which is rotatably mounted in the region of the end of the support arm (20) facing the worktop and is accessible from the outside of the support arm (20). 5. Arbeits- und Bürotisch nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet,
daß in den Tragarmhälften (21,22) zwei Abstützwalzen (47,48) drehbar gelagert sind, die zu beiden Seiten der Abtriebszahnräder (40,41) in die Teil-Schwalbenschwanz-Führungsnuten (23,24) ragen und sich an den Stirnseiten der Stegenden (50) des Schwalbenschwanz-Führungssteges (44) abstützen.5. work and office table according to one of claims 1 to 4, characterized in
that in the support arm halves (21,22) two support rollers (47,48) are rotatably mounted, which protrude on both sides of the driven gears (40,41) in the partial dovetail guide grooves (23,24) and on the end faces of the Support web ends (50) of the dovetail guide bar (44). 6. Arbeits- oder Bürotisch nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Antriebswelle (30), die Abtriebswelle (38) und die Schneckenwelle (35) in hülsenförmigen Lageransätzen (28,29; 36,37) der Tragarmhälften (21,22) gelagert sind.6. work or office table according to one of claims 1 to 5, characterized in that the drive shaft (30), the output shaft (38) and the worm shaft (35) in sleeve-shaped bearing approaches (28,29; 36,37) of the support arm halves ( 21,22) are stored. 7. Arbeits- oder Bürotisch nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Antriebswelle (30) zumindest an einem Ende mit einem Koppelabschnitt (31) aus dem Tragarm (20) ragt.7. work or office table according to one of claims 1 to 6, characterized in that the drive shaft (30) at least at one end with a coupling section (31) from the Support arm (20) protrudes. 8. Arbeits- oder Bürotisch nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Antriebswelle (30), die Abtriebswelle (38) und die Abstützwalzen (47,48) mit ihren Drehachsen parallel zueinander und parallel zur Längsachse der Quertraverse (11) sowie senkrecht zur Trennebene der Tragarmhälften (21,22) ausgerichtet sind.8. work or office table according to one of claims 1 to 7, characterized in that the drive shaft (30), the output shaft (38) and the support rollers (47,48) with their axes of rotation parallel to each other and parallel to the longitudinal axis of the crossbar (11th ) and perpendicular to the parting plane of the support arm halves (21, 22). 9. Arbeits- oder Bürotisch nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Antriebswelle (30) und die Abtriebswelle (38) in einer zur Trennebene senkrechten Mittelebene des Tragarmes (20) angeordnet sind und
daß die Abstützwalzen (47,48) symmetrisch zu dieser Mittelebene liegen.9. work or office table according to one of claims 1 to 8, characterized in that the drive shaft (30) and the output shaft (38) in a perpendicular to the parting plane of the support arm (20) are arranged and
that the support rollers (47, 48) are symmetrical about this central plane. 10. Arbeits- oder Bürotisch nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß sich die Tragarme (20) zu den der Arbeitsplatte zugekehrten Enden hin verjüngen und mit Gelenklaschen (53) versehen sind.10. Work or office table according to one of claims 1 to 9, characterized in that the support arms (20) taper towards the ends facing the worktop and are provided with hinge plates (53). 11. Arbeits- oder Bürotisch nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die Antriebswellen (30) der der Vorderseite und die Antriebswellen (30) der der Rückseite der Arbeitsplatte zugeordneten Tragarme (20) jeweils mittels einer Koppelstange (51) drehfest miteinander verbunden und gemeinsam antreibbar sind.11. Work or office table according to one of claims 1 to 10, characterized in that the drive shafts (30) of the front and the drive shafts (30) of the rear of the worktop associated support arms (20) each rotatably by means of a coupling rod (51) are interconnected and can be driven together. 12. Arbeits- oder Bürotisch nach Anspruch 11, dadurch gekennzeichnet,
daß die Koppelstangen (51) einzeln und wahlweise in der einen oder anderen Drehrichtung antreibbar sind.12. work or office table according to claim 11, characterized in
that the coupling rods (51) can be driven individually and optionally in one or the other direction of rotation. 13. Arbeits- oder Bürotisch nach Anspruch 11 oder 12,
dadurch gekennzeichnet,
daß die Koppelstangen (51) gemeinsam und wahlweise in der einen oder anderen Drehrichtung antreibbar sind.13. work or office table according to claim 11 or 12,
characterized,
that the coupling rods (51) can be driven jointly and optionally in one or the other direction of rotation. 14. Arbeits- oder Bürotisch nach einem der Ansprüche 11 bis 13, dadurch gekennzeichnet, daß die Koppelstangen (51) gemeinsam und wahlweise in derselben oder in entgegengesetzten Drehrichtungen antreibbar sind.14. Work or office table according to one of claims 11 to 13, characterized in that the coupling rods (51) can be driven jointly and optionally in the same or in opposite directions of rotation.
EP91113756A 1990-09-07 1991-08-16 Work- or office table Expired - Lifetime EP0476316B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4028454 1990-09-07
DE4028454A DE4028454A1 (en) 1990-09-07 1990-09-07 WORK OR OFFICE

Publications (2)

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EP0476316A1 true EP0476316A1 (en) 1992-03-25
EP0476316B1 EP0476316B1 (en) 1994-06-01

Family

ID=6413830

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Application Number Title Priority Date Filing Date
EP91113756A Expired - Lifetime EP0476316B1 (en) 1990-09-07 1991-08-16 Work- or office table

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US (1) US5241914A (en)
EP (1) EP0476316B1 (en)
AT (1) ATE106206T1 (en)
DE (2) DE4028454A1 (en)

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US6102808A (en) * 1998-12-10 2000-08-15 Wan Chao Wood Industrial Co., Ltd. Height-adjustable billiard table
DE10124316B4 (en) * 2001-05-17 2006-05-11 Karl-Heinz Baumeister Column for height-adjustable furniture elements
US8146514B2 (en) * 2007-06-01 2012-04-03 Steelcase Inc. Table construction
US8307769B1 (en) 2009-07-31 2012-11-13 Mity-Lite, Inc. Plastic and plywood laminate table with drop corner
US9185974B2 (en) 2010-06-02 2015-11-17 Steelcase Inc. Frame type workstation configurations
US8667908B2 (en) 2010-06-02 2014-03-11 Steelcase Inc. Frame type table assemblies
US9210999B2 (en) 2010-06-02 2015-12-15 Steelcase Inc. Frame type table assemblies
US8689705B2 (en) 2010-06-02 2014-04-08 Steelcase, Inc. Reconfigurable table assemblies
US8550012B2 (en) 2011-10-27 2013-10-08 Mity-Lite, Inc. Leg locking and folding mechanism for folding table
US8671850B2 (en) 2011-10-27 2014-03-18 Mity-Lite, Inc. Convertible tabletop with pivotal modesty panel
US10517392B2 (en) 2016-05-13 2019-12-31 Steelcase Inc. Multi-tiered workstation assembly
WO2017197395A1 (en) 2016-05-13 2017-11-16 Steelcase Inc. Multi-tiered workstation assembly
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EP0364822A2 (en) * 1988-10-19 1990-04-25 Dyes Gmbh Büromöbelfabrik Table with a frame and a top as well as an adjusting device for varying the height and the inclination of the top of the table

Also Published As

Publication number Publication date
DE4028454A1 (en) 1992-03-12
US5241914A (en) 1993-09-07
DE59101784D1 (en) 1994-07-07
EP0476316B1 (en) 1994-06-01
ATE106206T1 (en) 1994-06-15
DE4028454C2 (en) 1992-12-10

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