DE102018203414B3 - Adjustable table - Google Patents

Abstract

A table (1) comprising a table top (15) and a base frame comprising a first pair of legs (2, 3) each having associated feet (4, 5) and a second pair of rigid legs (6, 7) each having associated feet ( 8, 9), wherein the feet (4, 5) of the first pair have a fixed distance from the table top (15), wherein the feet (8, 9) of the second pair are interconnected and common with respect to their distance to the table top (15) and separated from the rigid legs (6, 7) are vertically adjustable, wherein a clamping device is arranged, by means of which the feet (8, 9) of the second pair in their distance from the table top (15) can be locked, characterized in that the feet ( 8, 9) of the second pair are interconnected by a spar (10) fixed to a shaft (11) which can be guided by means of a guide (12) between the legs (2, 3, 6, 7) of one of the pairs is.

Description

The present invention relates to an adjustable table, in particular a four-legged table.

Tables, especially four-legged tables, for example, the widely used and their own standard representing portable bistro tables with four curved tubular steel legs, two of which are laterally hinged, with also hinged, mostly round table tops, for example, 80 cm diameter and table heights of about 70 cm and about 110 cm, are often placed in a different location, each with a different ground relief and wobble almost always on almost any surface, even if this has little bumps, because then one of the four legs has no contact with the ground, with As a result, the table shakes violently jerkily almost every time you use it, causing drinks to spill over or turning mealtimes into an annoying balancing act.

The usual countermeasures, such as inferior small objects or adjusting compensation screws on a table-foot, are usually insufficient, unreasonable because of dirt on the table feet or are impossible for lack of material, but in any case they are annoying and often omit at least one of these reasons.

Hosts, waiters and guests face this problem on a daily basis worldwide.

Especially for fully folding, mobile tables so far there is no satisfactory solution to the wobble problem.

From the EP 1 616 501 A2 Office furniture with leg frame arrangements are known, on which a table top arrangement is fixed and distributed along a longitudinal axis of a table top of the arrangement. Each assembly has a limited number of units that are matched to each other to modulate the assemblies' configurations. The attachment of the assembly is moved relative to an axis of symmetry to create two sections of different lengths in the cutting planes. The units of the leg frame assemblies form a plate, a base, an extension, angled pieces and upright rods.

From the DE 697 16 267 T2 For example, a stabilizer assembly for use with a table is known comprising a support structure. A table top can be mounted on the support structure. Four feet are attached to the support structure so that a line drawn between a first pair of feet intersects a line drawn between a second pair of feet. The feet of each pair are fixed relative to each other and the pairs are linearly displaceable relative to each other. A displacement means is arranged on the support structure to allow a linear displacement of the foot pairs relative to each other. The shifter is operable when the feet are disposed on an uneven support surface so that all four feet can abut the support surface in use.

From the WO 2016/133 744 A1 is an integral system for stabilizing the table and chair on uneven surfaces. The table includes a table top carried by a first end of a primary shaft, a second end of the primary shaft having a first pair of legs extending therefrom; a secondary shaft positioned in the primary shaft and movably connected at a first end thereof, a second end of the secondary shaft having a second pair of legs extending therefrom; and wherein the secondary shaft can move laterally relative to the primary shaft to thereby stabilize the table. Another version uses a combination of plate element and shaft. Chairs can use a similar technology.

From the DE 41 06 648 A1 a folding table is known, comprising a central column which can be folded against the table top and having a foot consisting of two cross-shaped foot parts, the first of which is parallel to the pivot axis of the center column and the second in a position parallel to the first and a position can be locked at a right angle. The second foot part may have a longitudinally displaceable inner tube, which is rotatable in the center column and is resiliently biased upward.

From the US 2 513 889 A a device is known with which the displaceable parts of legs of a table can be fixed relative to each other.

It is an object of the present invention to provide an improved adjustable table.

The object is achieved by a table having the features of claim 1.

Advantageous developments are the subject of the dependent claims.

A table according to the invention comprises a table top and a base frame comprising a first pair of legs each having associated feet and a second pair of legs each having associated feet, the feet of the first pair being at a fixed distance from the table top, the feet the second pair are interconnected and mutually adjustable in terms of their distance from the table top, in particular by moving and in particular so that both feet of the second pair have the same distance from the table top, wherein a clamping device is provided by means of which the feet of the second pair in their Distance to the table top can be locked.

According to the invention, the feet of the second pair are interconnected by a spar which is fastened to a shaft which can be guided by means of a guide between the legs of one of the pairs, for example of the first or the second pair.

In one embodiment of the invention, the clamping device comprises a tensionable strap by means of which the guide fastened to the shaft can be clamped between the legs of one of the pairs when the strap is tensioned, the guide being movable along the legs of this pair when the strap is relaxed ,

In one embodiment of the invention, a clamping lever with an eccentric bead for tensioning the band is arranged. Alternatively, however, a different type of clamping mechanism may be provided, for example a manually operated rotary knob, a clamping wedge or other mechanism which is adapted to tension the band around the legs and.

In one embodiment of the invention, an intermediate piece between one of the legs and the clamping lever for supporting the eccentric bead is provided.

In one embodiment of the invention, the guide is held by means of a pin in at least one slot arranged in the band. As an alternative to the oblong hole, it is also possible to provide a round hole which has a diameter which is larger than the diameter of the pin.

In one embodiment of the invention, the legs of the first pair lie diagonally opposite one another, with the legs of the second pair lying diagonally opposite each other.

In one embodiment of the invention, the legs of the first pair are pivotable about a vertical axis.

In one embodiment of the invention, the legs of the second pair are rigidly connected to the table top.

In one embodiment of the invention, one or more brackets are provided which connect the legs of the first pair to the legs of the second pair.

By means of the solution according to the invention, the problem of wobbly tables, in particular four-legged tables, is solved by compensating for level differences of the table base, in particular already when setting up the table, by means of two diagonally opposite together up and down movable feet, which are finally mechanically fixed, for example manually.

The two movable feet, connected horizontally by a spar, depending on the unevenness of the table surface up level adjustment by means of a vertical shaft guided up or down, the upper end is fixed in the position which it occupies after level compensation , for example by a clamping mechanism.

The clamping mechanism locks the movable feet by traction between the vertical shaft and the fixed table legs. The movable feet are separated from the immovable table legs and form an up and down movable assembly with leveling and shank for the level compensation.

The table according to the invention delights hosts, waiters and guests by putting an end to the annoying wiggles of tables that have so far given rise to so much annoyance.

The present invention gives its users the opportunity to have portable, fully folding tables already balanced during erection floor irregularities until these tables have taken a wobble-free position, to then fix them with a hand movement in this position.

The solution according to the present invention is inexpensive, reliable and looks good. The present invention is useful in that for the first time it enables tables, especially mobile tables, whose location changes frequently, to be set up quickly and easily, without time-consuming disagreeable dislocations of users, such as hosts, waiters or guests.

• 1a eine schematische Abbildung eines einstellbaren Tisches,
• 1b eine schematische Abbildung des einstellbaren Tisches nach einer Höhenverstellung zweier einstellbarer Tischbeine,
• 2a schematische Ansichten einer Klemmvorrichtung in einer Verstellposition, und
• 2b schematische Ansichten der Klemmvorrichtung in einer Klemmposition.

In the following, embodiments of the invention will be explained with reference to figures. Showing:

• 1a a schematic illustration of an adjustable table,
• 1b a schematic illustration of the adjustable table after a height adjustment of two adjustable table legs,
• 2a schematic views of a clamping device in an adjustment position, and
• 2 B schematic views of the clamping device in a clamping position.

Corresponding features are identified by the same reference numerals in all figures.

Orientation and orientation are related to a position of use of the table.

In 1a is a table schematically 1 , especially a bistro table with four feet 4 . 5 . 8th . 9 represented. In the picture is the table 1 exaggeratedly crooked about the adverse influence of a soil roughness B on which the foot 9 of the table 1 is to clarify. 1a shows the table 1 with two laterally folding legs 2 . 3 and their feet 4 . 5 , as well as with two diagonally opposite rigid legs 6 . 7 which separate the vertically movable feet 8th . 9 are assigned, which on a spar 10 are fixed, on which a vertical shaft 11 attached with a top-mounted guide 12 between the legs 6 . 7 is arranged.

feet 8th . 9 , Holm 10 , Shank 11 and leadership 12 are connected to a common up and down moving assembly.

Next are brackets 13 . 14 shown which the laterally folding legs 2 . 3 with the rigid legs 6 . 7 connect. The brackets 13 . 14 allow, for transport purposes, the legs 2 . 3 laterally to fold so that their feet 4 . 5 on the vertically movable feet 8th . 9 lie approximately parallel, instead of standing crosswise and bulky of these cross-shaped. This folding mechanism has long been standard on tables of this type to achieve compact dimensions during transport.

guide 12 leaves the spar 10 vertically between the legs 6 . 7 glide as soon as uneven ground when setting up the table 1 requires that Holm 10 and the feet attached to it 8th . 9 either move up or down together to achieve all four feet 4 . 5 . 8th . 9 at the same time have contact with the ground.

On a supporting rack of table 1 which is mainly the legs 2 . 3 . 6 . 7 and their feet 4 . 5 . 8th . 9 includes, there is a table top 15 ,

1a shows the table 1 in shaky position on uneven ground. The tabletop 15 from the table 1 would go along with the entire table base because of the soil roughness B under foot 9 either to the foot 5 or to the foot 4 tip over. In addition, the table would be 1 relatively strong to the foot 8th inclined towards.

1b shows the table 1 after the compensation of the soil roughness B under foot 9 in wobble-free lineup, which by vertical movement of feet 8th . 9 , Holm 10 , Shank 11 and leadership 12 existing assembly was effected, recognizable in 1b Remember that the distance between leadership 12 and bracket 14 is smaller than in 1a ,

The legs 2 . 3 . 6 and 7 are not exactly vertical, but still relatively easy to the left front to the foot 8th inclined, however, is the inclination of the legs 2 . 3 . 6 and 7 only half as strong as in the state, the 1a shows.

The plate is corresponding 15 from the table 1 not exactly aligned horizontally but also - like the legs 2 . 3 . 6 and 7 , easy to the foot 8th inclined, but only half as strong as in 1a shown.

In the 1a shown relatively strong crooked position of table 1 to the foot 8th would have remained adversely unchanged, if as conventional coasters or wedges or similar items under one of the feet 4 . 5 would have been attached.

The compensation of the soil roughness B under foot 9 by the inventive mechanism of the table 1 So, not only does his shaky lineup end, but so does his table top 15 50% less inclined than when using the previous emergency, eg beer mats or wedges.

As long as the table 1 after the compensation of the soil roughness B under foot 9 no longer shaking back and forth, but only slightly inclined in the manner described, this is the slight inclination of the table top 15 from the table 1 acceptable, since it is hardly noticeable and usually only below the magnitude of the slope, which sidewalks or terraces as typical shelves of table 1 For the purpose of rainwater drainage usually anyway and is about 2%, and which a corresponding slight oblique position of the table top 15 causes even if in these cases the levels of footprint of the table 1 and the tabletop 15 are completely parallel.

By no means there is an increased risk that items from the table top 15 even if a careless user rolls spherical or cylindrical objects on the plate 15 sets. Even if spherical or cylindrical objects on the table top 15 would lie through the device of the invention, the inclination of the table top 15 By 50% reduced compared to the conventional construction and in this way rolling away spherical or cylindrical objects would only occur half as violent and only half as likely to occur as in conventional construction.

2a shows details of a clamping device of the table 1 , First shows 2a in magnification on the spar 10 attached shaft 11 with the guide attached above 12 , a pen protruding from both sides 16 , a band 17 with bolts 18 and in an exemplary embodiment, a manually operated clamping lever 19 with eccentric bead 20 and one between the clamp lever 19 and the leg 7 located intermediate piece 21 on which the eccentric bead 20 can slide and on which the clamping lever 19 Pressure applies when it is folded down to the feet 8th . 9 to fix. The leadership 12 and / or the intermediate piece 21 can have fillets that match a cylindrical cross-section of the legs 6 . 7 can be trained. In another cross-sectional shape of the legs 6 . 7 can be a correspondingly different form of leadership 12 and / or the intermediate piece 21 be provided to the legs 6 . 7 to engage as well as possible. The pencil 16 attach the guide 12 on the tape 17 so that they can move together in the vertical direction, but a limited independent movement in the horizontal direction is possible. This is in the band 17 for example, at least one slot, preferably two slots, for receiving the pin 16 intended.

In the illustrated embodiment, the device according to the invention is a ground unevenness B balancing table 1 , with clamping lever 19 and eccentric bead 20 designed. Alternatively, however, it is also possible to provide a different type of clamping mechanism, for example a manually operated rotary knob, a clamping wedge or another mechanism which is suitable for the band 17 around the legs 6 and 7 to stretch.

2a shows the clamping device of the table 1 before or during the compensation of the soil roughness B under foot 9 :

The eccentric bead 20 on the clamping lever 19 is turned so that he does not train on bolt 18 and band 17 exercises, so that band 17 loose around the legs 6 and 7 lies. guide 12 , Shank 11 , Holm 10 and the moving feet 8th and 9 You can make a vertical compensation movement upwards or downwards, depending on the type of movement through the ground relief when setting up the table 1 on its underground is beneficial.

2 B shows the clamping device after completion of the compensation of the soil roughness B under foot 9 in the state of fixation of the feet 8th . 9 , In the case shown are feet 8th . 9 , Holm 10 , Shank 11 and leadership 12 on the legs 6 . 7 slipped upwards to compensate for a raised ground roughness. The eccentric bead 20 is by downward movement of the clamp lever 19 turned so that he was at the bolt 18 pulls and the tape 17 tight around the legs 6 . 7 spans, allowing leadership 12 , Shank 11 , Holm 10 and feet 8th . 9 can not move vertically and table 1 can not wobble during use. The arrows in 2 B left and right of band 17 symbolize the direction in which by the clamping lever 19 Train is exercised on the band 17 ,

All parts or a number of parts of the base of table 1 that is all parts below the table top 15 can be made of metal, for example of steel. Holm 10 , Leadership 12 , Clamping lever 19 and intermediate piece 21 , can also be made of hard plastic.

guide 12 and intermediate piece 21 may have horizontal depressions through which the band 17 is performed to always hold these three components together.

LIST OF REFERENCE NUMBERS

1

table

2

laterally folding leg

3

laterally folding leg

4

foot

5

foot

6

rigid leg

7

rigid leg

8th

movable foot

9

movable foot

10

Holm

11

shaft

12

guide

13

holder

14

holder

15

tabletop

16

pen

17

tape

18

bolt

19

Clamping lever

20

Eccentric bead

21

connecting piece

B

Floor Rub

Claims (9)

A table (1) comprising a table top (15) and a base frame comprising a first pair of legs (2, 3) each having associated feet (4, 5) and a second pair of rigid legs (6, 7) each having associated feet ( 8, 9), wherein the feet (4, 5) of the first pair have a fixed distance from the table top (15), wherein the feet (8, 9) of the second pair are interconnected and common with respect to their distance to the table top (15) and separated from the rigid legs (6, 7) are vertically adjustable, wherein a clamping device is arranged, by means of which the feet (8, 9) of the second pair in their distance from the table top (15) can be locked, characterized in that the feet ( 8, 9) of the second pair are interconnected by a spar (10) fixed to a shaft (11) which can be guided by means of a guide (12) between the legs (2, 3, 6, 7) of one of the pairs is. Table (1) after Claim 1 in that the clamping device comprises a tensionable band (17) by means of which the guide (12) fixed to the shaft can be clamped between the legs (2, 3, 6, 7) of one of the pairs when the band (17) is tensioned the guide (12) is movable along the legs (2, 3, 6, 7) of this pair when the band (17) is relaxed. Table (1) after Claim 2 wherein a clamping lever (19) with an eccentric bead (20) or a rotary knob or a clamping wedge for tensioning the band (17) is arranged. Table (1) after Claim 3 , wherein an intermediate piece (21) between one of the legs (2, 3, 6, 7) and the clamping lever (19) for supporting the eccentric bead (20) is arranged. Table (1) after one of Claims 2 to 4 , wherein the guide (12) by means of a pin (16) in at least one in the band (17) arranged slot or round hole is held. A table (1) according to any one of the preceding claims, wherein the legs (2, 3) of the first pair are diagonally opposite one another and the legs (6, 7) of the second pair are diagonally opposite each other. Table (1) according to one of the preceding claims, wherein the legs (2, 3) of the first pair are pivotable about a vertical axis. Table (1) according to one of the preceding claims, wherein the legs (6,7) of the second pair are rigidly connected to the table top (15). Table (1) according to one of the preceding claims, wherein one or more brackets (13, 14) are arranged connecting the legs (2, 3) of the first pair to the legs (6, 7) of the second pair.

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