CA2053841A1

CA2053841A1 - Desk

Info

Publication number: CA2053841A1
Application number: CA 2053841
Authority: CA
Inventors: Manfred Adirsch; Detlef Hansel; Horst Schiermeier
Original assignee: Manfred Adirsch; Detlef Hansel; Horst Schiermeier; Gesika Buromobelwerk Gmbh & Co. Kg
Current assignee: Gesika Buromobelwerk GmbH and Co KG
Priority date: 1990-10-22
Filing date: 1991-10-21
Publication date: 1992-04-23
Also published as: EP0482300A1; DE4033576C2; DE4033576A1

Abstract

ABSTRACT
A desk has a working surface with a metal frame that incorporates two side stands that are connected to each other through a cross member that extends in the longitudinal direction of the working surface, the working surface being con-nected to the metal frame. The cross member is formed by at least two parallel round tubes. The round tubes are screwed at their face ends to the side stands.

Description

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The present invention relates to a desk with a top (working surface) and a metal frame which incorporates two side stands that are connected to each other by means of a cross member that extends in the longitudinal directi.on of the working surface, the working surface being joined to the metal frame.
The most varied forms of desks of th.is kind are known.
The most common are designs in which the cross-pieces are welded to the side stands or legs.
Proceeding from this prior art, it is the task of the present invention to create a desk with a metal frame, which permits simple assembly and a great deal of flexibility with respect to linkaye of the desk to other such desks.
In accordance with the present invention there is provided a desk with a working surface and metal frame which incorporates two side stands that are connected to each other by means of a cross member that extends in the longitudinal direction of the working surface, the working surface being joined to the metal frame, characterized in that the cross member is fo.rmed by at least two round tubes that are parallel to each other, and which are bolted at their face ends to the side stands.
~he formation of the cross-pieces by at least two round tubes that are parallel to each other and which are screwed at their face ends to the side stands represents a particularly simple and useful configuration. Such a configuration creates the prere~uisites for particularly flexible configuration, i.e., for the possibil.ity of buildiny various models whilst retaining the . , . ,. ~ .~ . : , .

2~3~1 - 2a - 26221-74 same metal frame.
In a preferred embodiment of the present invention r the si.de stands consist of an upright leg that is either vertical or inclined slightly to the rear, from which a cantilever arm ~ . . :~ . . . . ................................. .
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extends forwards and slightly upwards, two round tubes that are parallel to each other being arranged at the upper end of the upright leg and at the upper end of ths cantilever arm.

In a ~urther, pre~erred embodiment, at least one round tube is gripped by two tilt fittings that are arranged parallel to each other and these either overlap or grip the tube and ~re formed to a run-of~ on its outer periphery. Tllting the working surface and thus adjusting its slope is made very simple by the use of round tubes.

In a preferred embodiment of the present invention, the tilt fitting incorporates a basic body on which a cover is hinged onto a pivot pin that extends parallel to the axis of the tube, this cover being able to pivot from its open position, in which the tube is free, into itB closed position, when it is against the tube. In this connection it i8 advantageous that the cover can snap into the locked position.

In addi.tion, it is expedient that the basic body of the tilt fitting can move in the transverse direction of the working sur~ace and is connected to a guide rail which, in its turn, is connected to the working surface. Such a configuration makes it possible to adjust the working surface in the transverse direction and also to adjust the slope oP said working surfaceO

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~ 26221-74 Additional preferred embodiments of the present invention are described in the sub-claims and are described in greater detail below on the basis of the drawings appended hereto. These drawings show the following:

igure 1: a first embodiment of the desk with the working sur~ace tilted:
Figure 2: a second embodiment that uses the same frame, in which the working surface can be moved transversly;
Figure 3: a perspective view of the connector between the tubes and the working surface;
Figure 4: a perspective view c,f the connectors with the guide rail and working surface;
Figure 5: a further linking plate, Figure 6: a cross section on the plane 6 6 as shown in figure 1.

The desk consists of a metal frame and a working surf~ce 8 that is connected thereto. The metal frame incorporates two side stands 1. Each stand consists of a base arm lc and a leg la that is essential]y vertical or inclined slightly backwards, and a cantilever arm lb. Connectors 2, the construction of which can ke seen more clearly from figure 6, are provided at the end of the cantilever arm lb and at the end of the leg la, these being parallel to the floor and at equal heights. Close to their ends, the connectors have stepped continuous drillings 2a, 2b through which pass the securing bolts 13 or 12, respectively. The -: ' ~

~ 5 -20~8~ ~6221-74 securing bolts 13 engage in a threaded hole in a sheet metal plate 4a that is connected rigidly to the tube 4~ In Figure 6, one of the two continuous drillings is closed off by means of a cap 14. On the side of the connector 2 that is proximate to the tubes 3 and 4 there are centering extensions 2c over which the tubes 3 and 4 fit. The bolts 13, 12, respectively, draw the tubes 3 and 4 firmly against the connector 2.
In the upper part of the drawing in Figure 6, a round sleeve-like extension piece 11 that incorporates a collar lla is incorporated on the side that is opposite the tube 3. This extension piece 11 is of an outside diameter that corresponds to the outside diameter of the round tube. With the help of the connecting bolt 12, the round tube 3, the connecting piece 2, and the extension piece 11 are drawn tightly together. The extension piece 11 incorpo~ates a shoulder that fits into the recess 2b and centers the extension piece in 2b.
The extension piece 11 is provided for installing or linking an additional working surface 8' (see Figure 5). Each of the two extension pieces 11, is gripped by the tilt fittings 9 when being linked to a working surface 8' and because of the collar lla, is prevented from being pulled out in an axial ~irection.
The tilt ~itting 9 is shown in greater detail in Figure 3. This fitting consists of a base body 9a which, in the version shown in Figure 3, is bolted directly to the underside of the working surface 8. The base body 9a incorporates a round : " ~ , ~ " : , ", ~ ", j,, ; v, ; ~ ; ~

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` - 6 - 2~38~t 26221-74 receptacle 9c, the diameter of which corresponds to the outside diameter of the round tubes or the extension pieces. The opening 9c is so configured that the base body 9a can snap onto the round tubes or the extension pieces~ Then, the ~olding clamp piece is pivoted from its open position into t~e closed position, in which a detent lug fits behind corresponding area in the base body 9a. In the fixed position, the folding clamp 9b lies securely on the round tube or on the extension piece.
In the embodiment shown in Figures 2 and 4, the base body 9a is not bolted directly to the working surface 8; in this instance, the base body passes through a longitudinal slot lOa of a guide rail 10, which in its turn is bolted to the underside of the working surface. This design makes it possible to move the working surface 8 in its transverse direction. ~t the same time, because of the configuration of the tilt fitting, it is possible to tilt the working surface. The spacer with which the worki~g surace is held in the desired inclined position is not shown in this drawing. To this end, any design of spacer can be used.

Claims

1. A desk with a working surface and metal frame which incorporates two side stands that are connected to each other by means of a cross member that extends in the longitudinal direction of the working surface, the working surface being joined to the metal frame, characterized in that the cross member is formed by at least two round tubes (3; 4; 6: 7) that are parallel to each other, and which are bolted at their face ends to the side stands (1).

2. A desk as defined in claim 1, characterized in that the side stands (1) incorporate a leg (1a) that is essentially vertical, from which a cantilever arm (1b) extends obliquely upwards and forwards; and in that both at the upper end of the leg (1a) and at the upper end of the cantilever arm (1b) there are in each instance two parallel round tubes (3; 4;
6; 7).

3. A desk as defined in claim 1 or claim 2, characterized in that at least one round tube (3; 4; 6; 7) is enclosed by two tilt fittings (9) that are arranged parallel to each other, these gripping or enclosing the tube and being configured to a run-off at their outer peripheries.

4. A desk as defined in claims 1 to 3, characterized in that the tilt fitting (9) incorporates a basic body (9a) to which a closing flap (9b) is hinged about a pivot axis that is parallel to the axis of the tube, and which can be moved from its open position, in which the pipe is free, into its closed position, in which it lies against the pipe (3; 4; 6;
7).

5. A desk as defined in claim 4, characterized in that the closing flap (9b) can be snapped into the lock position.

6. A desk as defined in one or more of the claims 1 to 5, characterized in that the basic body (9a) of the tilt fitting (9) is connected to a guide rail (10) so as to be displaceable in the transverse direction, said guide rail being connected in its turn to the working surface (8).

7. A desk as defined in one or more of the claims 1 to 6, characterized in that the legs (1a) of the side stand (1), which are essentially vertical, incorporate a connector (2) that has at each of its outer ends a stepped continuous drilling (2a, 2b), each of which aligns with the centering shoulder (2c) that is gripped by each of the face ends of a tube (3; 4) there being in each instance a section (3a; 4a) within the tube that incorporates an internal thread into which the bolt (13; 14) that passes through the drilling (2a) engages.

8. A desk as defined in claim 7, characterized in that the ends of the stepped drilling (2a, 2b) that are remote from the tubes (3; 4) enclose an extension of a round sleeve-like extension piece (11) with a collar (11a), the outside diameter of the area that is adjacent to the collar (11a) corresponding to the outside diameter of the round tube (3;
4).