EP0476316B1 - Work- or office table - Google Patents
Work- or office table Download PDFInfo
- Publication number
- EP0476316B1 EP0476316B1 EP91113756A EP91113756A EP0476316B1 EP 0476316 B1 EP0476316 B1 EP 0476316B1 EP 91113756 A EP91113756 A EP 91113756A EP 91113756 A EP91113756 A EP 91113756A EP 0476316 B1 EP0476316 B1 EP 0476316B1
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- EP
- European Patent Office
- Prior art keywords
- work
- worktop
- office table
- table according
- supporting arm
- 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
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Classifications
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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
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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
- 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 of the worktop and are articulated there on slides, which are adjustable on the underside of the worktop in guide rails running from the front to the back, 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.
- One end of the support arms is articulated on the crossbeam, 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 brackets in order to articulate the support arms on the worktop.
- 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 are adjustable 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 formed 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 only justified 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.
- the webs are designed as dovetail guide webs which are provided with at least one toothing
- each support arm is composed of two shell-shaped support arm halves and the crossbar faces a circular, concave-curved part dovetail guide groove forms which surrounds the dovetail guide web and pivotally fixes the support arm to the dovetail guide web
- 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 web 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 swivel mounting of the support arms on the table frame is improved since there is extensive support during the entire swivel movement of the support arms.
- the ends of the support arms facing the crossbar can fully cover the dovetail guide webs, so that also an elegant transition between the crossbar and the support arms is obtained.
- This transition is also adapted and optimized to the swiveling movement in that the dovetail guide web is U-shaped, the side legs transitioning 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 in engagement with two output gears, which are mounted on an output shaft rotatably mounted in the support arm halves.
- connection between the crossbar and the dovetail guide webs is more stable in that the long sides of the trough-shaped crossbar have side walls designed as hollow profiles, into which insert connectors can be inserted, and that the dovetail guide webs are connected through the side walls of the crossbar with 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 operatively connected via an endless toothed belt to a drive toothed belt wheel, and that the drive toothed belt wheel sits 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 from the outside of the support arm is accessible from. 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 rotatably connected to one another 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 be raised or lowered as desired. 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 the back 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 crossbar 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 duct that 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 in engagement, which are non-rotatably 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 gear wheels 40 and 41, the output shaft 38 rotatably supports the worm wheel 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 carries the toothed belt wheel 46 in a rotationally fixed manner.
- 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 as a coupling section 31 on the Support arm half 21 protrudes 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 connection 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 solely by the simultaneous but opposite pivoting of the support arms 20.
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- Transmission Devices (AREA)
- Workshop Equipment, Work Benches, Supports, Or Storage Means (AREA)
- Pivots And Pivotal Connections (AREA)
- Machine Tool Units (AREA)
- Plural Heterocyclic Compounds (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
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 of the worktop and are articulated there on slides, which are adjustable on the underside of the worktop in guide rails running from the front to the back, 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. One end of the support arms is articulated on the crossbeam, 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 brackets in order to articulate the support arms on the worktop.
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 are adjustable 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 formed 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 only justified 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 pivot 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 eïngangs 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 above, 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 a circular, concave-curved part dovetail guide groove forms which surrounds the dovetail guide web and pivotally fixes the support arm to the dovetail guide web, 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 web by means of at least one driven gear.
An dem Tischgestell brauchen nur die Schwalbenschwanz-Führungsstege 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 swivel mounting of the support arms on the table frame is improved since there is extensive support during the entire swivel movement of the support arms. The ends of the support arms facing the crossbar can fully cover the dovetail guide webs, so that also an elegant transition between the crossbar and the support arms is obtained. This transition is also adapted and optimized to the swiveling movement in that the dovetail guide web is U-shaped, the side legs transitioning 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 in engagement with two output gears, which are mounted on an output shaft rotatably mounted in the support arm halves.
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 crossbar and the dovetail guide webs is more stable in that the long sides of the trough-shaped crossbar have side walls designed as hollow profiles, into which insert connectors can be inserted, and that the dovetail guide webs are connected through the side walls of the crossbar with 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 operatively connected via an endless toothed belt to a drive toothed belt wheel, and that the drive toothed belt wheel sits 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 from the outside of the support arm is accessible from. 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.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.
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.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 rotatably connected to one another 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 be raised or lowered as desired. 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 the back 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.
- Fig. 1
- a perspective view of a table frame of a work or office table with four support arms,
- Fig. 2
- a section through a support arm with individual drive, which runs perpendicular to the parting plane of the two support arm halves, and
- Fig. 3
- 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
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
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
An die konvex gewölbten Abschnitte 14 werden die Schwalbenschwanz-Führungsstege 44 angebracht, wobei sich die Befestigungsschrauben durch die Seitenwände 12 und 13 hindurch erstrecken 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
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 Schneckenrad 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
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
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
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
Claims (14)
- Work- or office table, including a worktop which is adjustable in respect of height and/or inclination and is supported on the transverse support (11) of the table frame (10) by two pairs of pivotable supporting arms (20), one pair of the supporting arms (20) being orientated towards the front end of the worktop and the other pair of supporting arms (20) being orientated towards the rear end of the worktop and being pivotally mounted there on slide members which are adjustable on the underside of the worktop in guide rails (52), which extend from the front end to the rear end, wherein an arcuate, convexly curved rib (44) is disposed on the longitudinal sides of the transverse support (11) per supporting arm (20), and wherein the supporting arms (20) are pivotable by means of a drive having a driving toothed wheel (42, 43), characterised in that the ribs are dovetailed-like guide ribs (44) which are provided with at least one toothing (42, 43), in that each supporting arm (20) comprises two dish-shaped supporting arm halves (21, 22) and, facing the transverse support (11), forms an arcuate, concavely curved partially dovetailed-like guide groove (23, 24), which surrounds the dovetailed-like guide rib (44) and secures the supporting arm (20) pivotably on the dovetailed-like guide rib (44), and in that each supporting arm (20) accommodates a self-locking drive, which is drivable by means of a drive shaft (38) and is in engagement with the toothing (42, 43) of the dovetailed-like guide rib (44) by means of at least one driven toothed wheel (40, 41).
- Work- or office table according to claim 1, characterised in that the longitudinal sides of the trough-shaped transverse support (11) have lateral walls (12, 13), which are hollow profiles and into which insert connectors (18) are insertable, and in that the dovetailed-like guide ribs (44) are connected, e.g. screw-connected, to the inserted insert connectors (18) through the lateral walls (12, 13) of the transverse support (11).
- Work- or office table according to claim 1 or 2, characterised in that the dovetailed-like guide rib (44) is U-shaped, the lateral flanges extending into rib ends (50), which are angled outwardly at right angles, and in that two toothings (42, 43) are disposed between the lateral flanges of the dovetailed-like guide rib (44) and are in engagement with two driven toothed wheels (40, 41) which are non-rotatably mounted on a driven shaft (38), which is rotatably mounted in the supporting arm halves (21, 22).
- Work- or office table according to one of claims 1 to 3, characterised in that a worm gear (39) is non-rotatably disposed on the driven shaft (38) between the two driven toothed wheels (40, 41) and is in engagement with a worm (35), which is non-rotatably mounted on a worm shaft (35) rotatably mounted in the supporting arm halves (21, 22), in that the worm shaft (35) supports, in a non-rotatable manner, a toothed belt wheel (46) which is in operative connection with a driving toothed belt wheel (33) via an endless toothed belt (34), and in that the driving toothed belt wheel (33) sits non-rotatably on the drive shaft (30), which is rotatably mounted in the region of the end of the supporting arm (20) facing the worktop and is accessible from the external surface of the supporting arm (20).
- Work- or office table according to one of claims 1 to 4, characterised in that two supporting rollers (47, 48) are rotatably mounted in the supporting arm halves (21, 22), which rollers protrude into the partial dovetailed-like guide grooves (23, 24) on both sides of the driven toothed wheels (40, 41) and are supported on the end faces of the rib ends (50) of the dovetailed-like guide rib (44).
- Work- or office table according to one of claims 1 to 5, characterised in that the drive shaft (30), the driven shaft (38) and the worm shaft (35) are mounted in sleeve-like bearing extension members (28, 29; 36, 37) of the supporting arm halves (21, 22).
- Work- or office table according to one of claims 1 to 6, characterised in that the drive shaft (30) protrudes from the supporting arm (20) at at least one end with a coupling portion (31).
- Work- or office table according to one of claims 1 to 7, characterised in that the drive shaft (30), the driven shaft (38) and the supporting rollers (47, 48) are aligned with their rotary axes parallel to one another and parallel to the longitudinal axis of the transverse support (11) as well as perpendicular to the parting plane of the supporting arm halves (21, 22).
- Work- or office table according to one of claims 1 to 8, characterised in that the drive shaft (30) and the driven shaft (38) are disposed in a central plane of the supporting arm (20) lying perpendicular to the parting plane, and in that the supporting rollers (47, 48) lie symmetrically relative to this central plane.
- Work- or office table according to one of claims 1 to 9, characterised in that the supporting arms (20) taper towards the ends facing the worktop and are provided with pivot lugs (53).
- Work- or office table according to one of claims 1 to 10, characterised in that the drive shafts (30) of the supporting arms (20), associated with the front end of the worktop, and the drive shafts (30) of the supporting arms (20), associated with the rear end of the worktop, are each interconnected in a non-rotatable manner by means of a respective coupling rod (51) and are jointly drivable.
- Work- or office table according to claim 11, characterised in that the coupling rods (51) are drivable individually and selectively in one or other direction of rotation.
- Work- or office table according to claim 11 or 12, characterised in that the coupling rods (51) are drivable Jointly and selectively in one or other direction of rotation.
- Work- or office table according to one of claims 11 to 13, characterised in that the coupling rods (51) are drivable jointly and selectively in the same direction of rotation or in opposite directions of rotation.
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)
| Publication Number | Publication Date |
|---|---|
| EP0476316A1 EP0476316A1 (en) | 1992-03-25 |
| EP0476316B1 true EP0476316B1 (en) | 1994-06-01 |
Family
ID=6413830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91113756A Expired - Lifetime EP0476316B1 (en) | 1990-09-07 | 1991-08-16 | Work- or office table |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5241914A (en) |
| EP (1) | EP0476316B1 (en) |
| AT (1) | ATE106206T1 (en) |
| DE (2) | DE4028454A1 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4436166C2 (en) * | 1994-01-28 | 1997-01-09 | Kusch Co Sitzmoebel | Base for table tops for single and row tables |
| 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 |
| USD585218S1 (en) | 2007-06-01 | 2009-01-27 | Steelcase Development Corporation | Table |
| US8307769B1 (en) | 2009-07-31 | 2012-11-13 | Mity-Lite, Inc. | Plastic and plywood laminate table with drop corner |
| US8667908B2 (en) | 2010-06-02 | 2014-03-11 | Steelcase Inc. | Frame type table assemblies |
| US9185974B2 (en) | 2010-06-02 | 2015-11-17 | Steelcase Inc. | Frame type workstation configurations |
| US9210999B2 (en) | 2010-06-02 | 2015-12-15 | Steelcase Inc. | Frame type table assemblies |
| US8534752B2 (en) | 2010-06-02 | 2013-09-17 | Steelcase Inc. | Reconfigurable table assemblies |
| US8671850B2 (en) | 2011-10-27 | 2014-03-18 | Mity-Lite, Inc. | Convertible tabletop with pivotal modesty panel |
| US8550012B2 (en) | 2011-10-27 | 2013-10-08 | Mity-Lite, Inc. | Leg locking and folding mechanism for folding table |
| US10039374B2 (en) | 2016-05-13 | 2018-08-07 | Steelcase Inc. | Multi-tiered workstation assembly |
| US10517392B2 (en) | 2016-05-13 | 2019-12-31 | Steelcase Inc. | Multi-tiered workstation assembly |
| CN108577378B (en) * | 2018-04-04 | 2021-10-22 | 深圳市卖点科技股份有限公司 | Novel cosmetics are selld and are used show stand |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2046487A1 (en) * | 1969-09-22 | 1971-05-27 | Rouget, Pierre Marseille (Frankreich) | Drawing table |
| DE3039180A1 (en) * | 1980-10-17 | 1982-09-30 | Planmöbel Eggersmann KG, 4992 Espelkamp | Height adjustable table top desk - has two pairs of supports with drive transmission, and guide rails |
| CA1211490A (en) * | 1982-10-27 | 1986-09-16 | Innovative Metal, Inc. C/O/B/A Kinetics Furniture | Powered desk |
| SE446499B (en) * | 1984-03-16 | 1986-09-22 | Lars Johansson | DEVICE AT A TABLE INCLUDING A HIGH AND LOWERABLE TABLE DISC |
| US4615279A (en) * | 1984-12-21 | 1986-10-07 | Haye Cornelis Franciscus De | Vertically adjustable table |
| ATE108058T1 (en) * | 1986-09-15 | 1994-07-15 | Tecno Spa | SUPPORT STRUCTURE FOR OFFICE DESKS AND DESKS, INCLUDING THOSE WITH MULTIPLE LEVELS OF SUPPORT. |
| FR2633168B1 (en) * | 1988-06-24 | 1990-09-28 | Technal Snc | STRUCTURAL ELEMENT, PARTICULARLY FOR FURNITURE OF THE TABLE, OFFICE OR THE LIKE TYPE |
| DE3835365A1 (en) * | 1988-10-18 | 1990-04-19 | Gesika Bueromoebelwerk Gmbh | DEVICE FOR CONNECTING A DESKTOP TABLE TO A CARRIER |
| DE3933237A1 (en) * | 1988-10-19 | 1990-04-26 | Daniel Korb | Table with height- and angle-adjustable plate |
| EP0364822B1 (en) * | 1988-10-19 | 1994-04-20 | 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 |
| IT1229349B (en) * | 1989-05-05 | 1991-08-08 | Coopsette Scrl | SUPPORTING STRUCTURE FOR TABLES AND SIMILAR OFFICE FURNITURE WITH TRANSVERSAL INSERTION OF SERVICE CABLES. |
-
1990
- 1990-09-07 DE DE4028454A patent/DE4028454A1/en active Granted
-
1991
- 1991-08-16 DE DE59101784T patent/DE59101784D1/en not_active Expired - Fee Related
- 1991-08-16 EP EP91113756A patent/EP0476316B1/en not_active Expired - Lifetime
- 1991-08-16 AT AT91113756T patent/ATE106206T1/en not_active IP Right Cessation
- 1991-09-06 US US07/755,370 patent/US5241914A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0476316A1 (en) | 1992-03-25 |
| DE4028454A1 (en) | 1992-03-12 |
| US5241914A (en) | 1993-09-07 |
| ATE106206T1 (en) | 1994-06-15 |
| DE59101784D1 (en) | 1994-07-07 |
| DE4028454C2 (en) | 1992-12-10 |
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