EP0808588B1 - Framework stand used as underframe for tables or the like - Google Patents

Abstract

The longitudinal frame members are fastened at their ends to two lateral frame members. These members are fastened at their ends to metal tubes which make up the legs of the table. The individual frame members (11) are made of extruded profiles of light alloy. They are of rectangular section. The long walls are of thin plain section, while the short walls are thickened with inward-facing projections (12) which define part-circular grooves (13). These are adapted to accommodate screws for fastening at ends of frame members.

Description

The invention relates to a frame-like frame as a base for tables, desks, furniture or the like, according to the preamble of claim 1.

Such a rack is known from the document DE-U-8705611.

From DE-U-93 19 206 is also known, an im Cross section square Light metal extruded hollow profile as a component for Formation of frames or the like to use. This Profile has a continuous in the central area Screw channel in the form of a tube, which with the corners of the Hollow profile is connected via webs. If you have such Profiles want to connect with each other are in the area matching hollow cubes used in corners Walls holes for passing screws through located in the screw channel of the hollow profile intervene self-tapping.

The object of the invention is that mentioned State of the art to develop further and solutions propose to frame-like frames for tall Stresses are precise and stable To be able to produce light metal hollow profiles without to have to take special formal measures.

According to the invention this object is achieved in that the longitudinal and transverse bars one have a rectangular cross-section, on the narrow Sides of two webs with a continuous one between them Form screw channel, protrude inwards, and that the legs of the frame consist of a tubular profile, on the Outer surface of a extending along a surface line first groove is provided in which the narrow side of the free spar end is guided.

Here it turns out to be useful if at the end faces of two to each other parallel longitudinal spars under the shorter cross spars A T-shaped butt joint is screwed on, the cross bars have the free bar ends.

To manufacture frame-like frames of the type mentioned can, the invention only requires two Extrusion tools, namely one for the spars and one other for the legs. The fitter then only needs cut the profiles to the desired length and on some holes to make a whole stable framework for forming the frames as a substructure for Form tables, desks, furniture or the like.

The stability here is also special brought about that the free spar ends in elongated and cross-sectional grooves on the outer surface of the Legs are guided. This butt joint of the spar and leg is secured on the one hand by two screws, which in the two screw channels of the spar self-tapping intervention. In addition, a turnstile is provided by the Guide of the spar end created in the first groove. On frame-like frame formed in this way accordingly very stiff and highly resilient as well on top of that, it can be produced with the simplest of means.

An important embodiment of the invention is in the Subclaims 3 and 4 disclosed. Then form the Outer surfaces of the webs, which differ from the narrow ones The sides of the spar extend into the spar interior, a support surface For screw heads arranged transversely to the longitudinal axis of the profile. If you have a through hole in the outer wall of the spar attaches according to the diameter of the screw head, the screw head penetrates the outer wall and supports on the outer surface of the web. Is the distance between the outer surface of the web and the outer surface of the profile equal to the height of the screw head, then it closes Screw head flush with the outer surface.

Such a measure has the particular advantage that the spar profiles can be made relatively thin-walled, without the stability suffering because the Outer wall not as a support surface for screw connections needs to be used.

With the subject of claims 5 to 8 is a appropriate training of the tubular profile for the legs of the Frame described, according to which on the outer surface of the Pipe profile one along a surface line extending second groove is located. Has this second groove different functions. On the one hand, screw heads can be attached invisibly. On the other hand, the second groove as a channel for cables and the like. Finally, this second groove is provided by a Complete the cover profile, the outer surface of which Adapts the contour of the pipe profile.

In claim 9 is an appropriate cross-sectional design of the tubular profile, the meaning of which is given in on the one hand to form the second groove and on the other hand Guides for inserting pins, hubs or to create such. After that, the invention looks radial from the pipe wall of the pipe profile to the inside extending webs with their ends in Interact with the bottom of the second groove a guide for pins, hubs or the like forms in the Pipe profile to be used on the front. To this Purpose is the bottom of the second groove according to the Curvature of the hub or the pin is arched.

According to claim 11 it is provided in the individual leg end z. B. to use a plastic cap, which has an axially continuous bore for receiving a Has pin, wherein the hub of the cap on the webs and the bottom of the second groove of the leg profile is guided and with bar-like approaches in the space between the Webs and the bottom of the second groove protrudes.

On the one hand, such a cap can be used for To carry foot parts, which is expediently a Platen in combination with one in the cap have guided spigot. Should these foot parts be adjustable in height, the pin as a threaded spindle and the bore of the cap is designed as a threaded bore become.

An identical cap can also be on the top of the leg be inserted into the tube profile. In the bore of the Can be the pin of another fitting insert, for example with a flange plate a table top or the lower part of a piece of furniture or the like is screwed. This measure has at the same time the advantage that you can by different heights Adjust the pin in the hole in the cap one Oblique position of the table top to be screwed on or can achieve the same, which is advantageous, for example is when the frame according to the invention for the manufacture of drawing tables, consoles or the like shall be.

Further details and exemplary embodiments result from the features of claims 13 to 20.

Figur 1:

eine Draufsicht auf H-förmiges Gestell mit Längs- und Querholmen sowie Beinen,

Figur 2:

einen Querschnitt durch ein rechteckiges Hohlprofil zur Verwendung als Längs- oder/und Querholm,

Figur 3:

einen Querschnitt durch das Hohlprofil gemäß Figur 2 in Verbindung mit einer Stoßverschraubung zu einem anderen Hohlprofil,

Figur 4:

einen Querschnitt durch eine Stoßverbindung zwischen dem Hohlprofil eines Holmes und dem Rohrprofil eines Beines,

Figur 5:

einen Querschnitt durch den oberen Bereich eines hinteren Beines mit einem eingesetzten Beschlag zur Schrägstellung einer Tischplatte,

Figur 6:

einen Querschnitt durch das Bein längs der Linie VI-VI in Figur 5,

Figuren 7 und 8:

Stirnansicht und Querschnitt durch eine in das Rohrprofil des Beines einsetzbare Kappe,

Figur 9:

eine Ansicht eines Stifthakens,

Figur 10:

eine Seitenansicht auf einen in das obere Ende eines vorderen Beines einsetzbaren Beschlag zur Schrägstellung einer Tischplatte,

Figur 11:

Seitenansicht eines an das rahmenartige Gestell anschließbaren PC-Supports und

Figur 12:

eine Draufsicht auf den PC-Support gemäß Figur 11.

The invention is shown schematically and for example in the drawing. Show it

Figure 1:

a plan view of an H-shaped frame with longitudinal and transverse bars and legs,

Figure 2:

a cross section through a rectangular hollow profile for use as a longitudinal and / or cross member,

Figure 3:

3 shows a cross section through the hollow profile according to FIG. 2 in connection with a butt screw connection to another hollow profile,

Figure 4:

a cross section through a butt joint between the hollow profile of a spar and the tubular profile of a leg,

Figure 5:

a cross section through the upper region of a rear leg with an inserted fitting for inclining a table top,

Figure 6:

3 shows a cross section through the leg along the line VI-VI in FIG. 5,

Figures 7 and 8:

Front view and cross section through a cap that can be inserted into the tubular profile of the leg,

Figure 9:

a view of a pen hook,

Figure 10:

2 shows a side view of a fitting which can be inserted into the upper end of a front leg for tilting a table top,

Figure 11:

Side view of a PC support and connectable to the frame-like frame

Figure 12:

a plan view of the PC support according to Figure 11.

In the embodiment of Figure 1 is the basic view of the frame (2) according to the invention shown in Connection with, for example, a slab of the substructure for a table (1), desk, furniture or the like can represent. In principle, the frame (2) has one H-shape, after which two longitudinal bars (4) on the front two cross bars (3) through a butt screw connection (9) are connected. In the embodiment protrude Cross bars (3) via the butt joint with the longitudinal bars (4) and form free spar ends (24) on which Pipe profiles as a leg (5) via a screw connection (10) are attached. The tubular profiles (5) have on them Outer surface along a surface line each a first groove (6) whose width corresponds to the width of the cross member (3) equivalent. The free spar end (24) is in this first Groove (6) guided and thus secured against rotation.

On the side opposite the first groove (6) the tubular profile (5) has a second groove (7) through a Cover profile (8) is covered. This second groove (7) is used on the one hand to accommodate the screw heads for the Screws (10) and on the other hand forms one Cable duct (25) (see FIG. 6).

The longitudinal spar (4) or transverse spar (3) is one in Cross section of rectangular hollow profile (11) made of light metal, in particular from an extruded hollow profile (11) educated. On the inside of the narrow sides of the Hollow profile (11) are two in the distance mutually arranged webs (12) extending in the direction extend to the interior and one between them Form screw channel (13). This screw channel (13) takes the individual screw connection (9,10), whose Screw shanks have self-tapping properties.

Between the outer surface (15) of the individual web (12) and the inner surface of the outer wall of the hollow profile (11) a space (14) is formed, the Web outer surface (15) parallel to the outer surface (17) of the Hollow profile (11) should be.

As specifically shown in FIG. 3, the outer surface of the bridge serves (15) as a support for the screw head (18) Screw connection (9). Accordingly, the profile wall a through hole (19), the size of the Screw head (18) corresponds. If the distance (16) between the outer surface of the web (15) and the Profile outer surface (17) of the height of the screw head (18) corresponds, then the screw (10) with your Screw head (18) flush with the outer surface (17) of the Hollow profile (11).

In the example of Figure 3 you can also see that the Bars (12) pierced by a through hole (53) are to the screw channel (13) of the to be connected Profile (11) should be aligned and to accommodate the Screw shaft including its lateral guidance serves.

The cross section of Figure 3 shows the butt joint between the cross bar (3) and the longitudinal bar (4), it it is important that the end face of the longitudinal spar (4) exactly parallel to the outer wall surface (17) of the cross section (3) lies.

In the embodiment of Figure 4 is the butt joint between the free spar end (24) of the cross spar (3) and the tubular profile (5) of the leg. One recognises clearly the first groove (6) for guiding the forehead area of the free spar end (24). The edge of the groove (6) should beveled to insert the cross bar (3) in to facilitate the groove (6).

A second groove (7) lies opposite this first groove (6), which forms a channel (25) which leads to the outside through a Cover profile (8) is completed. This cover profile (8) becomes snap-lock-like with the help of its webs (27) inserted into the groove (7). The webs are accordingly (27) of the cover profile (8) and the side walls (28) of the second groove (7) curved or set back, to bring about the snap lock connection.

In the bottom (20) of the groove (7) are Through holes (21), coaxial to the location of the Screw connection (10) with which the free spar end (24) on Pipe profile (5) is screwed on. The screw head (18) must pass through this through hole (21) become. The screw head is supported when screwing (18) on the groove bottom (26) of the first groove (6).

Two extend from the wall of the tubular profile (5) Guide webs (22) radially inwards. The free ends this guide webs (22) circumscribe together with the curved outer surface of the groove base (20) a circle (23) and form a guide for a pin or a hub, as will be described later.

Figures 5 and 10 describe the connection of a Plate (38) with the legs (5), shown at the same time as the plate (38) using the below described fittings in one or more inclined positions can be adjusted. The leg shown in Figure 5 (5) is in this example with the back of the plate (38) and the leg (5) shown in Figure 10 with the Front of the plate (38) connected.

In the upper end of the respective tube profile (5) one As shown in FIGS. 5 and 6, leg becomes one z. B plastic cap (30) used, the has a central through bore (31) therein to guide the pin (32) of a fitting (36). This Cap (30) has an outer disc (55) which has the same diameter as the tubular profile (5). The hub (33) of the cap (30) is, as in FIG. 4, already has been described, between the webs (22) and the Groove bottom (20) of the hollow profile (5) out.

Two bar-like extensions extend from the hub (33) Lugs (34) to the outside, their circumference in the tubular profile (5) is led.

The pin (32) guided in the hub (33) of the cap (30) has a series of bores (40) transverse to the longitudinal axis that have the same distance from each other. Around to fix the position of the pin (32) in the hub (33), there is a radial in the bolt-like approach (34) Threaded hole for receiving a locking element (41), that in the example of Figure 6 as grub screws is trained. This locking element (41) has a protruding locking ball (42) on the front, the is rotatably guided in the locking element (41) and below the action of a spring (43). The locking ball (42) protrudes slightly over the locking element (41) on the front out and engages in a bore (40) of the pin (32) on. Positional centering is thereby brought about.

About the axial displacement of the pin (32) in the cap To avoid (30), the outer surface (44) of the cap (30) a flute-shaped groove (45) on itself radially over the entire width of the outer surface (44) extends. In this groove-shaped groove (45) is a shown in Figure 9 pin hook (46) inserted penetrates the associated bore (40) of the pin (32) and merges into a hook part (47). This hook part (47) is dimensioned so that it is from the outside in another Bore (40) of the pin (32) can engage. The The hook part (47) is slightly V-shaped. The Pen hook (46) consists of a resilient material, so that when inserting the hook part (47) into the hole (40) to overcome a pretension of the hook part (47) is. As a result, the pin hook (46) is automatically activated Loosened from the pin (32) prevented.

It can also be seen in FIG. 6 that the diameter of the hub (33) is to be dimensioned such that between the outer circumference of the Hub (33) and the groove bottom (26) created enough space to insert the screw head (18) for the To accommodate screw (10).

The cap (30) is in Figures 7 and 8 as a single part shown again, whereby it can be seen that in the End plate of the cap (30) has a recess (54) is which to the channel (25) of the tubular profile (5) of the leg should be congruent. This is supposed to be the opportunity be created, cables also through the front Completion of the pipe profile (5) to be able to pass.

Figure 10 shows the arrangement of the cap (30) at the upper end of the front tubular profile (5) of the leg, with a Spindle pin (50) of a fitting (35) in the bore the cap (30) engages as a threaded hole can be trained. You can therefore the fitting (35) in adjust the height compared to the tubular profile (5) and a Inclination of the plate (38) in the desired Fix inclination.

Is in the fitting (35) or in the spindle pin (50) a pin (51) in an upward elongated hole (52) engages. This measure is in active connection with the execution of the fitting (36) in Figure 5. This Fitting (36) has a flange plate (37) on which for example a plate (38), e.g. B. a table top or screwed the bottom of a piece of furniture. The Flange plate (37) is rotatable on the joint (39) Journals (32) stored. This will give you the opportunity created to adjust the plate (38) at an angle. For this the pins (32) against the cap (30) around the desired height adjusted and by intervention of the Pin hook (46) secured in the holes (40). To the differences in length caused by the height adjustment to balance between the individual tube profiles is the Arrangement with pin (51) and slot (52) on the fitting (35) of the front leg (5) is provided.

When the table top (38) is tilted by one larger angle, it is recommended that Arrange slot (25) horizontally or a curved one To provide an elongated hole. On top of that, it is recommended that upper end of the pin (50) stronger than in Fig. 10 shown to round off. The thread (49) can also be a pin arrangement (32, 40) can be replaced, as in Fig. 5 is shown.

In the examples of Figures 11 and 12 is the training one connectable to the frame-like base frame (2) Add-on unit, for example in the form of a PC support (57). The plate (38) and a spar (3 or 4) are hinted at. The spar (3, 4) is supported a mounting plate (57) in the manner of a sliding guide (58) from the side acting on the spar (3,4) Has guide rollers (59). This makes it possible Fastening plate (57) along the bar (3,4) slightly move. Works against the underside of the bar (3, 4) a locking screw (60) on one of the spar (3,4) encompassing bearing block (61) is guided.

12 shows the mounting plate (57) in Embodiment designed triangular. Accordingly, it points two sliding guides (58) and a holder (62) for the Connection with one leg (63). This bracket (62) can contain, for example, an angle (64), the upright leg is dimensioned so that it fits into the groove (6) intervenes, as shown specifically in Fig. 4. This creates a torsionally rigid connection.

In the leg (63) is in accordance with the examples in FIGS. 5 or 10 a pin (32) is adjustable in height, which on upper end a plate (65) for receiving a PC (66) wearing.

This design has the advantage that the PC (66) does not take up space on the worktop (38) of the frame-like frame (2).
The leg (63) is supported with a foot (67) or a roller against the floor.

If you don't tilt the plate (38) wishes, it is recommended in the outer pane (55) the cap (30) axially parallel bores (56) to provide through which screws, not shown, for direct attachment of the disc (55) to the lower surface the plate (38) are guided. The cap so attached (30) after insertion into the tubular profile (5) of the Leg secured by radial screwing.

The cap (30) can also be attached to the lower end of the leg (5) can be connected to, for example, uneven floors compensate. In this case it is advisable to use the Wall of the bore (31) a continuous thread (49) (such as shown in Figure 10) and in it the threaded pin of a footplate is adjustable in height to screw.

PARTS LIST

1

Table, desk or the like

2

Light metal frame

3

transverse spar

4

longeron

5

Leg, tube profile

6

first groove

7

second groove

8th

Cover

9

screw

10

screw

11

Hollow profile made of light metal

12

web

13

screw

14

gap

15

Web outer face

16

distance

17

External profile surface

18

screw head

19

Through Hole

20

groove bottom

21

Through Hole

22

guide web

23

arc

24

free spar end

25

channel

26

groove bottom

27

web

28

Side wall

29

spigot

30

cap

31

drilling

32

spigot

33

hub

34

bar-like approach

35

Fitting (foot part)

36

fitting

37

flange

38

plate

39

joint

40

drilling

41

Locking element (grub screw)

42

locking bracket

43

feather

44

outer surface

45

channel groove

46

pin hook

47

hook part

48

threaded hole

49

threaded hole

50

spindle pin

51

pen

52

Long hole

53

Through Hole

54

recess

55

disc

56

drilling

57

mounting plate

58

slide

59

leadership

60

locking screw

61

bearing block

62

bracket

63

leg

64

angle

65

plate

66

PC

67

foot

Claims (20)

1. Frame-like stand (2) as the base for tables (1), desks, furniture or the like, comprising metallic hollow profiles (3, 4, 5) which are screw-connected to one another, more especially light-metal extruded profiles, longitudinal and transverse spars (4, 3) of the stand (2) forming an H-shaped frame, to the free spar ends (24) of which the legs (5) of the stand (2) are secured, characterised in that the longitudinal and transverse spars (4, 3) have a rectangular cross-section, on the narrow sides of which protrude inwardly two webs (12) which form therebetween a continuous screw channel (13), and in that the legs (5) of the stand (2) comprise a tubular profile, on the external face of which is provided a first groove (6), which extends along a generatrix, and in which the narrow side of the free spar end (24) is guided.
2. Stand according to claim 1, characterised in that the shorter transverse spars (3) are screwed onto the end faces of two longitudinal spars (4), which lie parallel to each other, to form a T-shaped butt joint, and in that the transverse spars (3) have the free spar ends (24).
3. Stand according to claim 1 or 2, characterised in that the external faces (15) of the webs (12) extend parallel to the wider external faces (17) of the spar profiles (3, 4) and serve as the supporting face for screw heads (53) which traverse the external face (17) and are disposed transversely relative to the profile longitudinal axis.
4. Stand according to claim 3, characterised in that the spacing (16) of the external web face (15) from the external profile face (17) corresponds to the height of a screw head (53), which fills in a flush manner a corresponding through-bore (19) in the profile wall.
5. Stand according to claim 1 or one of the following claims, characterised in that the tubular profile (5) has a second externally situated groove (7) extending along a generatrix, which groove is situated opposite the first groove (6) for accommodating the free spar end (24) and is closeable by a U-shaped cover profile (8) so as to leave a continuous channel (25).
6. Stand according to claim 5, characterised in that, in the base of the second groove (7), two through-bores (21) for the heads (53) of screws (10) are provided, which are supported on the internal face of the base (26) of the first groove (6), and the threaded shafts of which engage in a self-tapping manner in the screw channels (13) of the free spar ends (24).
7. Stand according to claim 5 or 6, characterised in that the webs (27) of the cover profile (8) engage in a snap-closing manner in undercut portions of the lateral walls (28) of the second groove (7).
8. Stand according to one of claims 5 to 7, characterised in that the channel (25), surrounded by the cover profile (8), is intended to accommodate cables.
9. Stand according to claim 1 or one of the following claims, characterised in that webs (22), which extend radially in the tubular profile of the leg (5), form with their ends, in co-operation with the base (20) of the second groove (7), a guide means for a hub (33) which can be pushed into the leg (5).
10. Stand according to claim 9, characterised in that the base (20) of the second groove (7) has a curved configuration, corresponding to the curvature (23) of the hub (33).
11. Stand according to claim 1 or one of the following claims, characterised in that a cap (30) is inserted into the individual leg end (5), which cap is formed, more especially, from plastics material and has an axial continuous bore (31) for accommodating a pin (32), the hub (33) of the cap (30) being guided on the webs (22) and the base (20) of the second groove (7) of the leg profile (5) and protruding, with lock-like extensions (34), into the space between the webs (22) and the base (20) of the second groove (7).
12. Stand according to claim 11, characterised in that the pin (32) is a component part of a fitting (35, 36), which is intended as the foot part (35) or flange (36) for securement on a plate (38).
13. Stand according to claim 12, characterised in that a flanged plate (37) is connected to the pin (34) by way of pivot joint (39).
14. Stand according to claim 12 or 13, characterised in that a row of radial bores (40) are disposed in the pin (32), and a radial locking element (41), which engages in one of the bores (40), is disposed in a lock-like extension (34) of the plastics material cap (30).
15. Stand according to claim 14, characterised in that the locking element (41) is in the form of a setscrew with a locking ball (42) resiliently guided therein, which ball engages in the bore (40).
16. Stand according to claim 11 or one of the following claims, characterised in that there is provided, in the external face (44) on the end-face of the cap (30), a radially extending concave groove (45), in which a U-shaped pin hook (46) is guided, which hook traverses one of the bores (40) and engages in a securing manner in another bore (40) with its curved hook part (47).
17. Stand according to claim 16, characterised in that the hook part (47) has a resilient property and is slightly V-shaped.
18. Stand according to claim 11 or one of the following claims, characterised in that the cap (30) has a continuous threaded bore (49), in which a spindle pin (50) of a fitting (35), in the form of a foot part, is guided in a vertically adjustable manner.
19. Stand according to claim 1 or one of the following claims, characterised in that there is disposed, on a longitudinal or transverse spar (4, 3) of the frame-like stand (2), in a longitudinally displaceable and securable manner, a slidable guide (58) which is connected, via a securing plate (57) or the like, to a leg (63) provided externally of the table (1), said leg being supported on the floor and carrying, for example, a PC.
20. Stand according to claim 19, characterised in that the securing plate (57) is connected via a bracket (64) to the leg (63), the upright portion of the bracket (64) engaging in an externally situated elongate groove (6) of the leg (63) in a non-rotatable manner.

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