EP0046140A2 - Office furniture with top of variable height and/or inclination - Google Patents

Abstract

1. A piece of office furniture with a desk board (23) which can be adjusted vertically and/or which can be tilted in relation to the furniture framework, a) which is mounted on the side frame of the furniture framework, in a manner which enables it to be adjusted vertically and fixed, by fixing means (36, 41) which are attached to the desk board at one of their ends and which are mounted at their other end in a manner which enables them to be adjusted vertically in a channel in the side frame, b) and a structure (29) which is fitted between the desk board and the furniture framework, taking the weight of the desk board, characterised in that a) the fixing means (36, 41) are formed as symmetrically engaging clamping braces (36) preferably compressing braces which can be adjusted longitudinally (36) and tighteners (41).

Description

The present invention relates to office furniture with a height-adjustable and / or tiltable desk top.

Height-adjustable desks, in particular for schoolchildren, are known, as are height-adjustable and incline-adjustable tables, in particular patient tables.

These known constructions cannot be applied to office furniture with a desk top without the resulting construction becoming cumbersome to adjust, expensive to manufacture and unsightly.

The present invention aims to provide office furniture with a height-adjustable and / or tiltable desk top, which acts and is designed as a unit, and whose desk top can not only be easily adjusted in height and / or inclined, but can then also be fixed without the need for special tools or Assistants must be requested.

Such office furniture is characterized according to the invention by clamping means for fixing the desk top in the desired height and / or inclined position.

An embodiment of the subject of the invention then explained using a drawing.

• Fig. l das aus zwei Seitenrahmen und einer Traverse bestehende, zerlegte Pultgestell in perspektivischer Darstellung,
• Fig. 2 einen Schnitt durch das eine Bein des U-förmigen Seitenrahmens, nach Schnittlinie II - II der Fig. 1,
• Fig. 3 einen Schnitt durch die Traverse nach Fig. l, gemäss Schnittlinie III - III,
• Fig. 4 eine Ansicht des Büromöbels mit eingebauter Pultplatte von vorne,
• Fig. 5 einen Schnitt durch das Büromöbel gemäss Schnittlinie V - V der Fig. 4, mit unterschiedlichen Höhen und Querlagen der Pultplatte,
• Fig. 6 eine Einzelheit der federnden Lagerung der Pultplatte als Ausschnitt aus Fig. 5,
• Fig. 7 die Einzelheit gemäss Fig. 6, geschnitten nach Schnittlinie VII - VII der Fig. 5,
• Fig. 8 einen Ausschnitt aus dem Oberteil des Büromöbels gemäss Schnittlinie VIII - VIII der Fig. 5, mit einer Vorspanneinrichtung und der Pultplatte in vorgespannter Lage,
• Fig. 9 den Ausschnitt aus der Darstellung nach Fig. 8, in Pfeilrichtung A der Fig. 8,
• Fig. 10 eine schematische Darstellung des Büromöbels von vorne, mit den beim Vorspannen der Pultplatte entstehenden Kräften, und der schematisch angedeuteten Biegelinie.

Show it:

• 1, the disassembled desk frame consisting of two side frames and a crossbar, in a perspective view,
• 2 shows a section through one leg of the U-shaped side frame, according to section line II - II of FIG. 1,
• 3 shows a section through the cross member according to FIG. 1, according to section line III - III,
• 4 is a view of the office furniture with built-in desk top from the front,
• 5 shows a section through the office furniture according to section line V - V of FIG. 4, with different heights and transverse positions of the desk top,
• 6 shows a detail of the resilient mounting of the desk top as a detail from FIG. 5,
• 7 shows the detail according to FIG. 6, cut along section line VII - VII of FIG. 5,
• 8 shows a section of the upper part of the office furniture according to section line VIII - VIII of FIG. 5, with a pretensioning device and the desk plate in a pretensioned position,
• 9 shows the detail from the illustration according to FIG. 8, in the direction of arrow A in FIG. 8,
• Fig. 10 is a schematic representation of the office furniture from the front, with the forces arising during the pretensioning of the desk top, and the schematically indicated bending line.

In the drawing, a desk 1 is shown with its various components in different positions. This console 1 has two U-shaped frames 3 and 4, which are screwed together by means of a cross member 6. The two U-shaped frames 3 and 4 each consist of two side tubes 8 and 9 and a U-rail 10 connecting them, which forms a coverable channel for receiving electrical lines by means of a U-cover strip 11.

FIG. 3 shows the cross section of the cross member 6, which has two lateral tubes 13, which are connected by welding, for example by means of a C-rail 10. The removable U-shaped cover strip 16, which forms a channel, is inserted between the two tubes 13 and 14, supported on the C-rail 15. At the two ends of the cross member 6 there are two end plates 18 and 19, which enable screwing to the two U-shaped frames 3 and 4.

In Fig. 1, the electrical lines 21 are also shown. It can be seen from this illustration that the lines can be fed in and out through the entire frame of the console 1. This construction also ensures that several units are joined together, the electrical lines can be routed from one unit to the next without additional work.

A desk plate 23 is held between the two U-shaped frames 3 and 4. It is spring-mounted at four points, which preferably form the corners of a rectangle or a square. These bearings 24, 25, 26 and 27 each have a coil spring 29 in the illustrated embodiment, which are supported in corresponding spring plates 30. For their part, the spring plates 30 are fastened, for example welded, to the yokes of the U-shaped frames 3 and 4 in the sense of FIGS. 6 and 7. The upper ends of the springs 29 rest in corresponding sleeves in the desk plate 23. At the ends of the two yokes to the U-shaped frames 3 and 4 there are a locking plate 32, which is provided in the middle with a sliding slot 33, and laterally Have countersinks 34. The desk plate 23 in turn is provided with corresponding grooves 35, into which tie rods 36 are inserted, the heads 37 of which fit into the countersinks 34, while the shaft thickness corresponds to the width of the sliding slots 33. The ends of the tie rods 36 are fastened in spans 41, which in turn are pivotally mounted in cheeks 40.

According to the desired inclination and working height of the desk plate 23, it is clamped and locked at the same time via the special tensioner 41.

The desk plate 23 is stabilized and locked via the tensioner 41 and the tie rods 36.

The preload is adjusted using a tension Thread 39 arranged on the closure side. The tie rods 36 can be adjusted continuously. The heads 37 are conical or hemispherical so that the tensioned desk top maintains its desired height position or inclination even under high loads. These heads 37 engage in the specially designed countersinks 34 of the slotted locking plates 32.

As can be seen from FIG. 10, the tie rods 36 can be inclined with respect to the desk plate 23 and tensioned by means of the tensioner 41. Forces 43 and 44 then act on the desk plate 23 starting from the tensioning points. The two forces result in the resultant 45 which points upwards in the middle of the desk plate 23 and which, like one at the ends, does not rest freely but rather clamps it in slightly Press the beam upwards and the indicated pre-stressing bending line results, which of course is very much inflated.

When the tie rods 36 are relaxed and the desk plate 23 is unloaded, it reaches its highest position under the pressure of the coil springs 29. It can now be pressed down at appropriate points and the desired position can be held by tensioning the tensioner 41. In this way it is possible to lower the desk plate 23 and / or to incline it as desired.

The design of the frame with coverable channels enables so-called three-dimensional electrification, as the corresponding lines indicated in FIG. 1 show. It is now possible to insert the cables from the floor (without looping) in all feet and in the horizontal connection profile.

Claims (4)

l. Office furniture with a height-adjustable and / or tiltable desk top, characterized by clamping means (36, 40, 41) for fixing the desk top (23) in the desired height and / or inclined position. 2. Office furniture according to claim 1, characterized in that the clamping means, preferably symmetrically attacking, e.g. have length-adjustable (38) tie rods (36) and tensioners (41). 3. Office furniture according to claim 2, characterized in that the tie rods (36) are arranged obliquely to the neutral plane of the desk plate (23) in order to generate a biasing the plate (23) upwards (Fig. 10). 4. Office furniture according to claim 1, characterized in that for fixing the tie rods (36) a sliding slot (33) with side countersinks (34) or notches for the Eugankerkopf (37) is provided in a rounded or cylindrical shape.

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