Table frame for height-adjustable table and height-adjustable table with table frame

Abstract

A table frame (2) for a height adjustable table (1) comprises two telescopic columns (4, 4 '), each telescopic column comprising an outer column (5, 5'), an inner column (6, 6 ') and a drive device (7, 7'), where the drive device (7, 7 ') comprises a first drive member (9) attached to the inner column (6, 6') and a second drive member (10) attached to the outer column (5, 5 '). The table frame (2) is provided with a belt type synchronizing device (13), one end of the belt type synchronizing device (13) is connected with an outer column (5 ') of the second telescopic column (4'), the other end of the belt type synchronizing device (13) is connected with a second driving component (10) of the driving device (7) of the first telescopic column (4), and relative displacement between an inner column (6) and an outer column (5) of the first telescopic column (4) through the synchronizing device (13) leads to synchronous relative displacement between an inner column (6 ') and an outer column (5') of the second telescopic column (4 ').

Description

TECHNICAL FIELD

[0001] The present application relates to a table frame for a height-adjustable table and a height-adjustable table having the table frame, in particular a table frame having a plurality of table legs. BACKGROUND

[0002] In order to improve stability and increase the load capacity, a plurality of table legs is applied to height-adjustable tables. However, the problem thereby arises that in the case of a non-synchronous extension of the table legs for height adjustment, the table top can tilt and the table legs can tilt and jam.

[0003] In the known solutions for the synchronous movement of a plurality of table legs, the movement of the individual table legs is therefore synchronized by means of a connecting shaft. The connecting shaft is coupled to the relative movement of the relatively movable parts of the table legs by means of a chain or toothed belt in order to synchronize the relative movement. In further embodiments, the connecting shaft is connected to the adjustment spindle of the individual table legs via a transmission. However, these solutions require the use of many complex components.

[0004] The applicant discloses in the specification of patent EP 1987734 B1 a table frame in which the table legs are connected to one another by means of at least one belt, wherein the at least one belt is deflected such that a relative displacement between the inner column and the outer column of a first table leg results in a synchronous relative displacement between the inner column and the outer column of a second table leg. Although relatively simple components are used here, a large number of mechanical components is still required in order to achieve synchronization stably. SUMMARY

[0005] It is therefore an object of the present application to provide a table frame for a height-adjustable table which does not have the above-mentioned disadvantages and can be constructed in an economically efficient manner.

[0006] This object is achieved by a table frame according to the present application and a height-adjustable table according to the present application. The present application comprises further advantageous extensions.

[0007] According to one aspect of the present application, the table frame has at least two telescopic columns, wherein a first telescopic column and a second telescopic column each comprise an outer column, an inner column arranged axially displaceable relative to the outer column in a first direction, wherein the telescopic column is configured such that the inner column can be extended out of the outer column in the first direction towards a table top of the table, and a drive device arranged at least partially within the inner column, wherein the drive device has a first drive part attached to the inner column in a position-stable manner relative to the inner column in the first direction and a second drive part attached to the outer column in a position-stable manner relative to the outer column in the first direction, and the first drive part and the second drive part are movable relative to each other in the first direction. Furthermore, the table frame has a first belt-type synchronization device connected in the region of one end thereof to the outer column of the second telescopic column, wherein the table frame is configured by the first belt-type synchronization device such that a relative displacement between the inner column and the outer column of the first telescopic column results in a synchronous relative displacement between the inner column and the outer column of the second telescopic column, and the first belt-type synchronization device is connected in the region of the other end thereof to the second drive part of the drive device of the first telescopic column.

[0008] Since the first belt-type synchronization device is connected with the second drive part attached to the outer column, it is not necessary to provide a further complex holding element for connecting the other end of the first belt-type synchronization device to the outer column of the first telescopic column. Thus, the table frame can be constructed in an economically efficient manner with fewer individual parts.

[0009] In a further advantageous extension of the table frame, the first telescopic column has a first deflection roller and a second deflection roller, and the second telescopic column has a third deflection roller, wherein the first deflection roller and the second deflection roller are connected to the inner column of the first telescopic column, and the third deflection roller is connected to the inner column of the second telescopic column. The first belt-type synchronization device is configured such that it can be deflected by the first deflection roller, in particular upwards by 180°, and by the second deflection roller of the first telescopic column, in particular by 90° towards the second telescopic column, and by the third deflection roller of the second telescopic column, in particular downwards by 90°.

[0010] Thanks to the use of these deflection rollers, it is possible to make the first synchronization device run within the table frame in a reliable and visually appealing manner.

[0011] According to a further advantageous embodiment of the table frame, the table frame has a second belt-type synchronization device connected in the region of a first end thereof to the second drive part of the drive device of the second telescopic column and in the region of a second end thereof to the outer column of the first telescopic column. The table frame is configured by the second belt-type synchronization device such that a relative displacement between the inner column and the outer column of the second telescopic column results in a synchronous relative displacement between the inner column and the outer column of the first telescopic column.

[0012] Due to the second belt-type synchronization device, the two telescopic columns can be moved precisely synchronously in the first direction and in the second, opposite direction.

[0013] According to a further advantageous embodiment of the table stand, the second telescopic column has a fourth deflection roller and a fifth deflection roller, and the first telescopic column has a sixth deflection roller. The fourth deflection roller and the fifth deflection roller are connected to the inner column of the second telescopic column, and the sixth deflection roller is connected to the inner column of the first telescopic column. The second belt-type synchronization device is configured such that it can be deflected, in particular upward by 180°, by the fourth deflection roller, and in particular by 90° toward the first telescopic column, by the fifth deflection roller of the second telescopic column, and in particular by 90° downward, by the sixth deflection roller of the first telescopic column.

[0014] Due to the use of these deflection rollers, it is possible to make the second synchronization device run within the table stand, thus achieving a reliable and visually appealing synchronization.

[0015] In a further advantageous further development of the table stand, at least one of the first telescopic column and the second telescopic column comprises a separate roller fastening element, which is attached to the inner column in the region of the end of the inner column opposite the first direction, and which is configured such that it can fasten the first deflection roller and the fourth deflection roller rotatably to the inner column.

[0016] Due to the separate roller fastening element, it is possible to connect the first deflection roller and the fourth deflection roller to the inner column without complex machining of the inner column.

[0017] In a further advantageous further development of the table stand, the roller fastening element has a laterally protruding protrusion, in the region of the end of the inner column opposite the first direction, the inner column has an opening or a recess from its inner surface, and the protrusion of the roller fastening element and the opening or the recess of the inner column are configured such that the protrusion engages in the opening or the recess and the roller fastening element is fixed relative to the inner column in any direction parallel to the first direction.

[0018] Due to the provision of the laterally protruding protrusion in combination with the recess or the opening, it is possible to mount the roller fastening element on the inner column in a simple manner.

[0019] According to an advantageous embodiment of the table stand, the roller fastening element is made of plastic.

[0020] This allows the roller fastening element to be produced economically and efficiently, which can be precisely adapted to the inner column in a simple manner.

[0021] In a beneficial further development of the table stand, the first and second telescopic columns each have a drive component fastening element, by means of which the first drive component of the drive device can be attached to the inner column, wherein the drive component fastening element has a support device which is configured such that it can rotatably support at least one of the second deflection roller and the sixth deflection roller or the third deflection roller and the fifth deflection roller.

[0022] As a result of this design of the drive component fastening element, the first drive component can be attached to the inner column and rotatably support the respective deflection roller without additional components being required, so that the number of components can be reduced and production costs can thus be reduced.

[0023] According to a further beneficial embodiment, the drive component fastening element has a laterally protruding protrusion, in the region of the end in the first direction of the inner column, which has an opening or a recess from its inner surface, and the protrusion of the drive component fastening element and the opening or recess of the inner column are configured such that the protrusion engages in the opening or recess and fixes the drive component fastening element in any direction parallel to the first direction.

[0024] As a result of the provision of the laterally protruding protrusion and the recess or opening, the drive component fastening element can be simply installed.

[0025] In this advantageous embodiment of the table stand, the drive device has a gas spring.

[0026] The gas spring has a design which is advantageous for accommodation in the telescopic column, wherein its extension force can be changed in a simple manner, if required.

[0027] According to a beneficial further development of the table stand, the gas spring comprises a locking device which is configured such that it locks the gas spring in a position within its stroke distance.

[0028] This makes it possible to simply lock the table top at a desired height within the lifting path.

[0029] In a further beneficial embodiment of the table stand, the drive component fastening element has a release device which is configured such that it releases the locking device of the gas spring.

[0030] In this case, in addition to the attachment of the first drive component of the drive device to the inner column and the installation of the deflection rollers, a further function is integrated into the drive component fastening element, so that further additional components can be saved.

[0031] According to a beneficial embodiment, the telescopic column has a first belt fastening element which is configured such that it directly connects the first belt-type synchronization device and the second belt-type synchronization device to the second drive component of the respective drive device.

[0032] This allows the synchronization device to be fastened to the outer column in a simple manner via the second drive component.

[0033] In a beneficial further development of the table frame, at least one of the first and second belt-type synchronization devices is composed of two belt-type sections, the first belt-type section being connectable to the outer column of the first and second telescopic column, the second belt-type section being connectable to the second drive component of the drive device of the first and second telescopic column, and the first belt-type synchronization device being configured such that it forms by pressing the sleeve to connect the first and second belt-type sections.

[0034] Since the synchronization device is designed in two sections and the two sections are connected to the respective components of the telescopic column, respectively, the telescopic column can be used for table frames with different widths, wherein the connection of the two sections to one synchronization device can then be carried out in a simple manner, thereby saving costs during assembly.

[0035] According to another aspect of the present application, a height-adjustable table has the above-mentioned table frame and the corresponding beneficial effects. BRIEF DESCRIPTION OF DRAWINGS

[0036] The present application is explained below on the basis of exemplary embodiments with reference to the accompanying drawings.

[0037] In particular:

[0038] Figure 1 A schematic view of a height-adjustable table is shown, which has a table frame according to the present application, and also a table top;

[0039] Figure 2 An enlarged view of the end of the drive device of the table frame with the first belt fastening element is shown;

[0040] Figure 3 A longitudinal sectional view of the telescopic column of the table frame is shown;

[0041] Figure 4 A perspective view of the drive device of the first telescopic column and the first and second synchronization devices with associated deflection rollers is shown;

[0042] Figure 5 A perspective view of the drive device of the second telescopic column and the first and second synchronization devices with associated deflection rollers is shown;

[0043] Figure 6 An end of the inner column arranged opposite the first direction is shown; and

[0044] Figure 7 One of the belt-type synchronization devices with multiple sections is shown. DETAILED DESCRIPTION

[0045] Figure 1 A schematic view of a height-adjustable table 1 is shown, the table 1 having a frame 2 according to the present application, with a table top 3.

[0046] The table frame 2 has two telescopic columns 4, 4’, namely a first telescopic column 4 and a second telescopic column 4’. In alternative embodiments, more than two telescopic columns 4, 4’ can also be provided.

[0047] The telescopic columns 4, 4’ each have an outer column 5, 5’ and an inner column 6, 6’, which is arranged to be axially displaceable in a first direction R relative to the outer column 5, 5’. The inner column 6, 6’ can extend out of the outer column 5, 5’ in the first direction R towards the table top 3 of the table 1. Furthermore, the telescopic columns 4, 4’ each have a drive device 7, 7’ described hereinafter.

[0048] Furthermore, the table frame 2 has a first belt-type synchronization device 13 and a second belt-type synchronization device 14.

[0049] The first belt-type synchronization device 13 is connected in the region of one of its multiple ends to the outer column 5’ of the second telescopic column 4’ and in the region of its other end to the outer column 5 of the first telescopic column 4. Furthermore, the first telescopic column 4 has a first deflection roller 15 and a second deflection roller 16 and the second telescopic column 4’ has a third deflection roller 17. The first deflection roller 15 and the second deflection roller 16 are connected in a positionally stable manner in the first direction R to the inner column 6 of the first telescopic column 4 and the third deflection roller 17 is connected in a positionally stable manner in the first direction R to the inner column 6’ of the second telescopic column 4’. The first belt-type synchronization device 13, starting from the end fastened to the outer column 5 of the first telescopic column 4, is deflected upwards by 180° by the first deflection roller 15, is deflected by 90° towards the second telescopic column 4’ by the second deflection roller 16 and is deflected downwards by 90° by the third deflection roller and is then connected to the outer column 5’ of the second telescopic column 4’. As a result, the table frame 2 is configured such that a relative displacement between the inner column 6 and the outer column 5 of the first telescopic column 4 by the first belt-type synchronization device 13 results in a synchronous relative displacement between the inner column 6’ and the outer column 5’ of the second telescopic column 4’.

[0050] The second belt-type synchronization device 14 is connected in the region of one of its multiple ends to the outer column 5 of the first telescopic column 4 and in the region of its other end to the outer column 5’ of the second telescopic column 4’.

[0051] Furthermore, the second telescopic column 4' has a fourth deflection roller 18 and a fifth deflection roller 19, and the first telescopic column 4 has a sixth deflection roller 20. The fourth deflection roller 18 and the fifth deflection roller 19 are connected to the inner column 6' of the second telescopic column 4' in a position-stable manner in the first direction R, and the sixth deflection roller 20 is connected to the inner column 6 of the first telescopic column 4 in a position-stable manner in the first direction R. Starting from the end fastened to the outer column 5' of the second telescopic column 4', the second belt-type synchronization 14 is deflected 180° upwards by the fourth deflection roller 18, 90° towards the first telescopic column 4 by the fifth deflection roller 19, and 90° downwards by the sixth deflection roller 20, and then connected to the outer column 5 of the first telescopic column 4. Thus, the table frame 2 is configured such that a relative displacement between the inner column 6 and the outer column 5 of the first telescopic column 4 by means of the first belt-type synchronization 13 results in a synchronous relative displacement between the inner column 6' and the outer column 5' of the second telescopic column 4'.

[0052] Due to the use of the first synchronization 13 and the second synchronization 14, the two telescopic columns 4, 4' can be precisely and synchronously extended and retracted. However, in alternative embodiments, only one of the two synchronizations 13, 14 can be provided, and / or the synchronizations 13, 14 can be deflected by different angles. In alternative embodiments, instead of deflection rollers, rigid bolts can be provided, for example, through which the belt-type synchronizations 13, 14 are deflected.

[0053] In the following description, components shown in the figures, of which only the first telescopic column 4 or components of the first telescopic column 4 are shown, respectively, are likewise provided in the second telescopic column 4'.

[0054] Figure 2 An enlarged view of the end of the drive 7 of the table frame 2 with the first belt fastening element 8 is shown in order to connect the first belt-type synchronization 13 to the drive 7. The drive 7 has a first drive component 9 and a second drive component 10. In the embodiment shown, the first drive component 9 is formed as a piston rod of a gas spring, and the second drive component 10 is formed as a cylinder body of the gas spring. The first drive component 9 and the second drive component 10 can be moved relative to each other in the first direction R. The gas spring has a locking device 11, in which a release pin of the locking device 11 is shown in Figure 2 . The locking device 11 locks the gas spring in a position within its stroke distance, and the gas spring can be released by actuating the release pin. In alternative embodiments, a gas spring without a locking device is provided, or the drive 7 is not formed as a gas spring, but for example as an electric linear motor, in which the first drive component 9 and the second drive component 10 are also formed by other components.

[0055] Figure 3A schematic view of a longitudinal section of the telescopic column 4 of the table frame 2 is shown, which longitudinal section passes through the telescopic column 4, wherein it can be seen that the telescopic column 4 has a drive device 7 which is arranged at least partially within the inner column 6. A first drive part 9 is attached to the inner column 6 in a position-stable manner in the first direction R by means of a drive part fastening element 12. A second drive part 10 is attached to the outer column 5 in a position-stable manner in the first direction R. To this end, the outer column 5 has an end plate 21 with a hole through which a threaded pin attached to the second drive part 10 is guided and fastened by means of a nut. In an alternative embodiment, the second drive part 10 can be fastened to the outer column 5 in a different manner, for example by means of a transverse pin fastening.

[0056] Figure 2 The first belt fastening element 8 shown is connected to the second drive part 10 of the drive device 7, and thus the first belt fastening element 8 connects the first belt-type synchronization device 13 directly to the second drive part 10 and thus to the outer column 5 of the first telescopic column 4.

[0057] Figure 4 A perspective view of the drive device 7 of the first telescopic column 4 in the retracted state and of the first and second belt-type synchronization devices 13, 14 with the associated deflection rollers 15, 16, 20 is shown.

[0058] The drive part fastening element 12 of the first telescopic column 4 has a support device 22 which rotatably supports the second deflection roller 16 and the sixth deflection roller 20.

[0059] In addition, the first telescopic column 4 has a second belt fastening element 23 by means of which the second belt-type synchronization device 14 is connected to the outer column 5 of the first telescopic column 4. Figure 3 ).

[0060] The drive part fastening element 12 of the first telescopic column 4 has laterally protruding lugs 24 on opposite sides. The laterally protruding lugs 24 are formed integrally with the drive part fastening element 12, such that they are configured to have elasticity relative to one another in one direction. The lugs 24 engage in Figure 3 The openings 28 shown are provided in the region of the end of the inner column 6 in the first direction R, and the lugs 24 of the drive part fastening element 12 and the openings 28 fix the drive part fastening element 12 in any direction parallel to the first direction R. In an alternative embodiment, grooves starting from the inner surface of the inner column are provided instead of the openings 28.

[0061] In addition, the drive part fastening element 12 comprises a release device 29 which can release the locking device 11 of the gas spring Figure 2). The release device 29 is designed as a transmission element which transmits a movement transmitted via Bowden cables, for example, to the release pin of the locking device 11.

[0062] Figure 5 A perspective view of the drive device 7' of the second telescopic column 4' in the retracted state is shown, as well as the first and second synchronization devices 13, 14 with the associated deflection rollers 17, 18, 19.

[0063] The drive part fastening element 12' of the second telescopic column 4' has a support device 22' which rotatably supports the third and fifth deflection rollers 17, 19.

[0064] Furthermore, the second telescopic column 4' has a second belt fastening element 23' by means of which the first belt-type synchronization device 13 is connected to the outer column 5' of the second telescopic column 4'.

[0065] Furthermore, the drive part fastening element 12' of the second telescopic column 4' has laterally protruding lugs 24' on opposite sides. The laterally protruding lugs 24' are formed integrally with the drive part fastening element 12' such that they are designed to be resilient in relation to one another in one direction.

[0066] Furthermore, Figure 4 and Figure 5 Roller fastening elements 25, 25' are shown. The telescopic columns 4, 4' comprise roller fastening elements 25, 25' in the region of the end of the inner column 4, 4' which is opposite the first direction R. The roller fastening elements 25, 25' rotatably fasten the first and fourth deflection rollers 15, 18 to the inner column 4, 4'. The roller fastening elements 25, 25' have laterally protruding lugs 26, 26'. The laterally protruding lugs 26, 26' are formed integrally with the roller fastening elements 25, 25' such that they are designed to be resilient in relation to one another in one direction. The roller fastening elements 25, 25' are made of plastic. In alternative embodiments, the roller fastening elements 25, 25' are not formed with laterally protruding lugs 26, 26' as shown, but are formed, for example, only as an axis in the inner column 6, 6'. And in further alternative embodiments, the roller fastening elements 25, 25' are not made of plastic, but are formed, for example, as zinc die-cast parts.

[0067] Figure 6 An end of the inner column 6, 6' which is arranged opposite the first direction R is shown. The inner column 6, 6' comprises an opening 27, 27' in the region of this end. In alternative embodiments, a groove starting from the inner surface of the inner column is provided instead of the opening 27, 27'.

[0068] The lugs 26, 26'( Figure 4 , Figure 5) engage in the openings 27, 27' in order to fix the roller fastening elements 25, 25' in any direction parallel to the first direction R with respect to the inner columns 6, 6'.

[0069] Figure 7 One of the belt type synchronizations 13, 14 is shown with multiple segments 30, 31. The belt type synchronizations 13, 14 have two belt type segments 30, 31 respectively and have a sleeve 32 respectively. The first belt type segment 30 can be connected to the outer column 5' of the second telescopic column 4' and the outer column 5 of the first telescopic column 4 and the second belt type segment 31 can be connected to the second drive component 10 of the drive 7 of the first telescopic column 4 and the second drive component 10' of the drive 7' of the second telescopic column 4'. The belt type synchronization 13, 14 is formed by pressing the sleeve 32 to connect the first belt type segment 30 and the second belt type segment 31. Thus, different distances of the telescopic columns 4, 4' can be flexibly reacted upon. In alternative embodiments, one piece synchronizations 13, 14 can also be used.

[0070] While the application has been illustrated and described in detail in the drawings and foregoing description, such illustration and description are to be considered illustrative or exemplary and not restrictive. The application defined in the claims is not limited to the disclosed embodiments. In the claims, the indefinite article "a" or "an" does not exclude a plurality or multiple.

Claims

1. A table frame (2) for a height-adjustable table (1), comprising: At least two telescopic posts (4, 4'), wherein the first telescopic post (4) and the second telescopic post (4') respectively include: Outer column (5, 5'), The inner column (6, 6') is arranged to be axially displaceable relative to the outer column (5, 5') in a first direction (R), wherein the telescopic column (4, 4') is configured such that the inner column (6, 6') can extend out of the outer column (5, 5') along the first direction (R) toward the tabletop (3) of the table (1), and A drive unit (7, 7') is at least partially disposed within the inner column (6, 6'), wherein the drive unit (7, 7') has a first drive component (9) and a second drive component (10), the first drive component (9) being attached to the inner column (6, 6') in a positionally stable manner relative to the inner column (6, 6') in a first direction (R), and the second drive component (10) being attached to the outer column (5, 5') in a positionally stable manner relative to the outer column (5, 5') in the first direction (R), and the first drive component (9) and the second drive component (10) being movable relative to each other along the first direction (R). The table frame (2) also includes: A first belt-type synchronization device (13) is connected at one end of the region to the outer column (5') of the second telescopic column (4'), wherein the table frame (2) is configured such that the relative displacement between the inner column (6) and the outer column (5) of the first telescopic column (4) causes a synchronized relative displacement between the inner column (6') and the outer column (5') of the second telescopic column (4') via the first belt-type synchronization device (13), and The first belt-type synchronizing device (13) is connected at its other end to the second drive component (10) of the drive device (7) of the first telescopic column (4).

2. The table frame (2) according to claim 1, wherein The first telescopic column (4) has a first deflection roller (15) and a second deflection roller (16), and The second telescopic column (4') has a third deflection roller (17). in, The first deflection roller (15) and the second deflection roller (16) are connected to the inner column (6) of the first telescopic column (4) in a positionally stable manner in the first direction (R), and the third deflection roller (17) is connected to the inner column (6') of the second telescopic column (4') in a positionally stable manner in the first direction (R). The first belt-type synchronization device (13) is configured to be deflected by the first deflection roller (15) and the second deflection roller (16) of the first telescopic column (4) and by the third deflection roller (17) of the second telescopic column (4').

3. The table frame (2) according to claim 1 or 2, wherein The table frame (2) has a second belt-type synchronization device (14), which is connected at its first end to the second drive component (10) of the drive device (7') of the second telescopic column (4'), and at its second end to the outer column (5) of the first telescopic column (4), wherein, The table frame (2) is configured such that the relative displacement between the inner column (6') and the outer column (5') of the second telescopic column (4') causes the synchronous relative displacement between the inner column (6) and the outer column (5) of the first telescopic column (4) by the second belt-type synchronization device (14).

4. The table frame (2) according to claim 3, wherein The second telescopic column (4') has a fourth deflection roller (18) and a fifth deflection roller (19), and The first telescopic column (4) has a sixth deflection roller (20). in, The fourth deflection roller (18) and the fifth deflection roller (19) are connected to the inner column (6') of the second telescopic column (4') in a positionally stable manner in the first direction (R). The sixth deflection roller (20) is connected to the inner column (6) of the first telescopic column (4) in a positionally stable manner in the first direction (R), and The second synchronization device (14) is configured to be deflected by the fourth deflection roller (18) and the fifth deflection roller (19) of the second telescopic column (4') and by the sixth deflection roller (20) of the first telescopic column (4).

5. The table frame (2) according to claim 2 or 4, wherein At least one of the first telescopic column (4) and the second telescopic column (4') respectively includes: Individual roller fastening elements (25, 25') are attached to the inner column (6, 6') in the region of the end opposite to the first direction (R) and are configured to rotatably fasten the first deflection roller (15) and the fourth deflection roller (18) to the inner column (6, 6').

6. The table frame (2) according to claim 5, wherein The roller fastening element (25, 25') has a laterally protruding protrusion (26, 26'). In the region of the end of the inner post (6, 6') opposite to the first direction (R), the inner post (6, 6') has an opening or groove (27) on its inner surface, and The protrusions (26, 26') of the roller fastening element (25, 25') and the openings or grooves (27) of the inner post (6, 6') are configured such that the protrusions (26, 26') engage in the openings or grooves (27) and secure the roller fastening element (25, 25') relative to the inner post (6, 6') in any direction parallel to the first direction (R).

7. The table frame (2) according to claim 5, wherein The roller fastening elements (25, 25') are made of plastic.

8. The table frame (2) according to claim 2, 4, 6 or 7, wherein The first telescopic column (4) and the second telescopic column (4') each have drive component fastening elements (12, 12'), and the first drive component (9, 9') of the drive device (7, 7') can be attached to the inner column (6, 6') via the drive component fastening elements (12, 12'), wherein, The drive component fastening element (12, 12') has a support device (22, 22') configured to rotatably support at least one of the second deflection roller (16) and the sixth deflection roller (20) or at least one of the third deflection roller (17) and the fifth deflection roller (19).

9. The table frame (2) according to claim 8, wherein The drive component fastening element (12, 12') has a laterally protruding protrusion (24, 24'). In the region of the end of the inner post (6, 6') in the first direction (R), the inner post (6, 6') has an opening or groove (28) on its inner surface, and The protrusions (24, 24') of the drive component fastening element (12, 12') and the openings (28) or grooves of the inner post (6, 6') are configured such that the protrusions (24, 24') engage in the openings or grooves (28) and secure the drive component fastening element (12, 12') in any direction parallel to the first direction (R).

10. The table frame (2) according to claim 1 or 2, wherein The drive unit (7, 7') has a gas spring.

11. The table frame (2) according to claim 10, wherein the gas spring includes a locking device (11) configured to lock the gas spring in a position within its travel distance.

12. The table frame (2) according to claim 9 or 11, wherein The drive component fastening element (12, 12') has a release device (29) configured to release the locking device (11) of the gas spring.

13. The table frame (2) according to any one of the preceding claims, wherein The telescopic column (4, 4') has a first belt fastening element (8) configured to directly connect the first belt-type synchronizing device (13) and the second belt-type synchronizing device (14) to the second drive component (10) of the corresponding drive device (7, 7').

14. The table frame (2) according to any one of the preceding claims, wherein At least one of the first belt-type synchronization device (13) and the second belt-type synchronization device (14) has two belt-type sections (30, 31). The first strip section (30) can be connected to the outer posts (5, 5') of the first telescopic post (4) and the second telescopic post (4'). The second strip section (31) can be connected to the second drive component (10) of the drive device (7, 7') of the first telescopic column (4) and the second telescopic column (4'), and The first belt-type synchronizing device is configured to be formed by connecting the first belt-type section (30) and the second belt-type section (31) through a pressing sleeve (32).

15. A height-adjustable table (1) having a table frame (2) according to any one of claims 1 to 14.

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