Drive device for furniture or building fittings

Abstract

The invention relates to a drive device (5), preferably a push-out device, for furniture fittings (4) or building fittings, comprising: at least one housing (8); at least one adjusting device (11) movable relative to the housing (8); at least one spring (12) for applying a force to the at least one adjusting device (11), the at least one spring (12) being connected with a first end to the at least one adjusting device (11); at least one bearing device (13), by means of which the at least one spring (12) is supported by a second end on the at least one housing (8); wherein the at least one bearing device (13) can be adjusted at a limited distance relative to the at least one housing (8).

Description

Field of the Invention

[0001] The present invention relates to a drive device, preferably a push-out device, for furniture fittings or building fittings, the drive device comprising:

[0002] at least one housing;

[0003] at least one adjusting device movable relative to the housing;

[0004] at least one spring for applying a force to the at least one adjusting device, wherein the at least one spring is connected to the at least one adjusting device by a first end;

[0005] at least one supporting device, the at least one spring being supported on the at least one housing by a second end via the supporting device.

[0006] Furthermore, the present invention relates to a furniture fitting or building fitting having a drive device of the type to be described.

[0007] Furthermore, the present invention relates to a piece of furniture having a furniture body, a furniture part movably supported relative to the furniture body, and at least one drive device of the type to be described. Background Art

[0008] Such drive devices are used, for example, to pull a movably supported furniture part relative to the furniture body into a closed end position and / or to push it from the closed end position relative to the furniture body into an open position by the force of a spring. For furniture parts of different sizes or different weights, it is desirable to individually determine the force of the spring. That is, it is uncomfortable for the user if too large or too small a pulling force and / or pushing force acts on the movable furniture part. A larger spring force is required for a heavy movable furniture part than for a light one. In the case of a combination of an additional buffer device and a drive device in the form of a pulling device, the pulling force of the spring must also be matched. Summary of the Invention

[0009] The object of the present invention is to provide a drive device of the type described at the beginning that avoids the above-mentioned disadvantages.

[0010] According to the present invention, this is achieved by the features of claim 1. Further advantageous embodiments of the present invention are given in the dependent claims.

[0011] According to the present invention, it is provided that the at least one supporting device is adjustable relative to the at least one housing over a limited distance.

[0012] In other words, the position where the spring of the support device is fixed can be adjusted relative to the housing at different positions. In this way, the maximum spring force and the spring travel can be adjusted, so that the spring force can be individually adapted to the furniture part to be moved.

[0013] According to a preferred embodiment, it can be provided that the at least one support device can be adjusted between a first position and at least one second position, wherein the at least one spring is tensioned more strongly in the second position than in the first position, and at least one release device is provided, by means of which the at least one support device can be reset from the second position to the first position - preferably under the action of the at least one spring.

[0014] This release device is advantageous because the user can, by operating the release device, immediately reset the position of the support device to the initial position with the least spring tension. In this way, it is possible to dispense with repeatedly rotating the rotatably supported actuating element in order to reduce the spring force.

[0015] According to one embodiment, the release device can have at least one movable, preferably linearly movable release element, which can be directly accessed from a position outside the housing of the drive device for manual operation or for operation by means of a tool.

[0016] By manual operation or by operation by means of a tool, preferably under the action of the at least one spring, the at least one support device can be reset from the second position to the first position.

[0017] Preferably, a mechanical spring element in the form of a compression spring, a tension spring or a torsion spring can be used as the spring. Description of the Drawings

[0018] The following explains other details and advantages of the invention based on the subsequent description of the drawings.

[0019] Figure 1 A piece of furniture is shown in perspective, having a furniture body and a furniture part movably supported relative to the furniture body.

[0020] Figure 2 A perspective view of a furniture fitting in the form of a drawer pull-out guide device and having a drive device for driving a movable furniture part is shown.

[0021] Figure 3a 、 3b A first embodiment of the drive device is shown in perspective and in top view.

[0022] Figures 4a to 4e Shows for adjusting in accordance with Figure 3a 、 3bThe timing of the spring force of the drive device

[0023] Figure 5a 、 5b The second embodiment of the drive device is shown in perspective view and in top view

[0024] Figure 6a 、 6b The third embodiment of the drive device is shown in perspective view and in top view

[0025] Figures 7a to 7d Shows for adjusting according to Figure 6a 、 6b The timing of the spring force of the drive device

[0026] Figure 8a 、 8b The fourth embodiment of the drive device is shown in perspective view and in top view

[0027] Figures 9a to 9c Shows for adjusting according to Figure 8a 、 8b The timing of the spring force of the drive device

[0028] Figures 10a to 10c Shows according to Figure 3a 、 3b A slightly modified embodiment of the drive device of 4a to 4e Detailed Description

[0029] Figure 1 A perspective view of a piece of furniture 1 is shown, which has a furniture body 2 and a furniture part 3 movably supported relative to the furniture body 2. In the illustrated embodiment, the movable furniture part 3 is movably supported relative to the furniture body 2 via at least one furniture fitting 4 in the form of a drawer pull-out guide device 4a. The movable furniture part 3 is configured here in the form of a drawer 3a, which includes a front panel 3b, side walls 3c, a drawer bottom panel 3d and a rear wall 3e

[0030] By means of a drive device 5, the movable furniture part 3 can be pulled relative to the furniture body 2 into a closed end position and / or can be at least partially pushed out from the closed end position relative to the furniture body 2 into an open position. The drive device 5 can be configured, for example, as a pulling device and / or a pushing device

[0031] In the case of a pulling device, it is preferably provided that: the drive device 5 has a spring 12 ( Figure 3a ) and a carrier acted upon by the spring 12 and releasably coupled to the movable furniture part 3, wherein the movable furniture part 3 can be pulled into the closed end position by the carrier and by the force of the spring 12

[0032] In the case of a push-out device, it is preferably provided that the drive device 5 has a spring 12 ( Figure 3a ), a movable push-out element which is acted upon by the spring 12, and a locking device for locking the push-out element in a locked position. By overpressing the movable furniture part 3 into an overpressure position which is located after the closed position of the movable furniture part 3, the push-out element can be unlocked, wherein the movable furniture part 3 can be pushed in the opening direction by the force of the spring 12 when the push-out element is unlocked.

[0033] Figure 2 A perspective view of a furniture fitting 4 in the form of a drawer pull-out guide device 4a and having a drive device 5 for driving a movable furniture part 3 is shown.

[0034] The drawer pull-out guide device 4a has a main body track 6 which can be fixed to the furniture body 2 via at least one fixed section 6a. Furthermore, the drawer pull-out guide device 4a has at least one pull-out track 7 which can be moved relative to the main body track 6 and which can be connected to the drawer 3a.

[0035] The drive device 5 for driving the movable furniture part 3 has a housing 8 which is connected or can be detachably connected to the furniture fitting 4. Alternatively, the housing 8 of the drive device 5 can be integrated into the furniture fitting 4.

[0036] In the illustrated embodiment, the drive device 5 has a synchronizing device 9, wherein the movement of the drive device 5 can be synchronized via a synchronizing rod (not shown here) with the movement of another drive device 5 which is opposite on the furniture body 2.

[0037] By means of a rotatably supported adjusting wheel 10, the closing end position of the pull-out track 7 (and thus of the movable furniture part 3) relative to the furniture body 2 can be adjusted.

[0038] Figure 3a A perspective view of a first embodiment of the drive device 5 is shown. The drive device 5 comprises:

[0039] - at least one housing 8;

[0040] - at least one adjusting device 11 which can move relative to the housing 8;

[0041] - at least one spring 12 for acting upon the at least one adjusting device 11, wherein the at least one spring 12 is connected to the at least one adjusting device 11 by a first end,

[0042] - at least one supporting device 13 via which the at least one spring 12 is supported on the at least one housing 8 by a second end.

[0043] The adjusting device 11 is detachably coupled, in a positive or non-positive manner, to the movable furniture part 3 such that the movement of the adjusting device 11 can be transmitted to the movable furniture part 3.

[0044] According to the invention, it is provided that the at least one support device 13 can be adjusted relative to the at least one housing 8 over a limited distance. In this way, the maximum spring force and the spring travel can be adjusted, whereby the spring force can be individually adapted to the furniture part to be moved.

[0045] According to one embodiment, it can be provided that the at least one support device 13 can be adjusted between a first position and at least one second position, wherein the at least one spring 12 is tensioned more strongly in the second position than in the first position, and at least one release device 14 is provided, by means of which the at least one support device 13 can be reset from the second position to the first position, preferably under the action of the at least one spring 12.

[0046] According to a possible embodiment, it can be provided that the at least one release device 14:

[0047] - has at least one - preferably serrated - locking profile 15a, and / or

[0048] - has at least one release position and at least one locking position, in the release position the release device 14 releases the at least one support device 13, in the locking position the release device 14 locks the at least one support device, and at least one spring element 16 is provided, which pre-tensions the release device 14 relative to the housing 8 into the locking position, and / or

[0049] - is movably supported relative to the housing 8 in a direction transverse to the longitudinal direction L of the at least one spring 12, and / or

[0050] - has at least one release element 14a, which is arranged outside the housing 8 and is designed for manual operation.

[0051] The advantage of the release device 14 is that the at least one spring 12 can be immediately reset to the minimum tension without the need for a rotatably supported adjusting element to be rotated many times.

[0052] According to a possible embodiment, it can be provided that the at least one support device 13

[0053] - can move relative to the housing 8, preferably linearly, and / or

[0054] - is movably supported in a direction parallel to the longitudinal direction L of the at least one spring 12, and / or

[0055] —— can be guided relative to the housing 8 via at least one guiding device 17, preferably the at least one guiding device 17 has at least one guide rail 17a and at least one guiding element 17b that can engage into the guide rail 17a, and / or

[0056] —— configured to be substantially L-shaped or substantially U-shaped, and / or

[0057] —— having at least one actuating element 18, which is arranged outside the housing 8 and configured for manual actuation.

[0058] In the illustrated embodiment, the guide rail 17a is arranged or formed on the housing 8 and the guiding element 17b is arranged or formed on the support device 13. Of course, in the kinematic inversion, the guide rail 17a can also be arranged on the support device 13 and the guiding element 17b can be arranged on the housing 8.

[0059] By means of a locking device 15, the at least one support device 13 can be releasably locked to the at least one housing 8. The locking device 15 can have, for example, at least one locking profile 15a and at least one locking element 15b that can engage into the locking profile 15a ( Figure 3b )

[0060] The housing 8 has a fixing surface 29 for abutting against the furniture fitting 4 or for abutting against a furniture part, and the releasing element 14a of the releasing device 14 is movably supported in a plane parallel to the fixing surface 29 of the housing 8. This has the particular advantage that the releasing element 14a of the releasing device 14 can be actuated laterally, and the drive device 5 can be made very flat.

[0061] The at least one support device 13 and the at least one releasing device 14 are configured as two structural units that are movably supported independently of one another on the housing 8.

[0062] By means of the actuating element 18 of the support device 13, the at least one spring 12 can be tensioned. By means of the releasing element 14a of the releasing device 14 that is separated from the actuating element 18, the spring 12 can be relaxed.

[0063] The actuating element 18 of the support device 13 is movably supported in the longitudinal direction L of the at least one spring 12 and parallel to the fixing surface 29 of the housing 8.

[0064] The releasing element 14a of the releasing device 14 is movably supported transversely to the longitudinal direction L of the at least one spring 12 and parallel to the fixing surface 29 of the housing 8.

[0065] Figure 3b Shows according to Figure 3aTop view of the drive device 5, wherein the force of the spring 12 has been adjusted to a minimum. To adjust the position of the support device 13 relative to the housing 8, the actuating element 18 is pressed in the direction X, wherein the locking element 15b can move along the locking profile 15b - preferably serrated - and along a guide rail 19 arranged on the housing 8, preferably linearly and / or parallel to the longitudinal direction L of the spring 12, against the force of the spring element 16 - preferably a compression spring.

[0066] In this way, the locking element 15b can be releasably locked along the locking profile 15a in two or more predetermined positions, wherein two or more different forces of the spring 12 can be adjusted.

[0067] According to possible embodiments, it can be provided that:

[0068] - the locking element 15b is arranged on the at least one support device 13, and / or

[0069] - the locking element 15b is configured to be substantially cylindrical, and / or

[0070] - there is provided at least one guide rail 19 arranged on the housing 8, in which the locking element 15b can be guided.

[0071] According to possible embodiments, it can be provided that the locking profile 15a

[0072] - can move relative to the housing 8, preferably linearly, and / or

[0073] - can move relative to the housing 8 against the force of the spring element 16, and / or

[0074] - can move in a direction transverse to the movement direction of the support device 13, and / or

[0075] - is configured to be serrated, wavy or semi-circular.

[0076] Figures 4a to 4e Shows the timing for adjusting the force of the spring 12 of the drive device 5 according to the Figure 3a , 3b embodiment.

[0077] Figure 4a Shows that starting from the first locking position of the locking element 15b according to the previous Figure 3a , 3b in which the tension of the spring 12 has been set to a minimum, the position of the support device 13 can be adjusted relative to the housing 8 by manually pressing the actuating element 18 in the direction X.

[0078] To guide the support device 13, there is provided at least one guide element 17b arranged on the support device 13, which can move along a guide rail 17a arranged on the housing 8 and preferably can move linearly.

[0079] Furthermore, a locking element 15b arranged on the support device 13 can be guided along a locking profile 15a of the housing 8, which is preferably serrated, wherein the locking element 15b is additionally guided along a guide rail 19 of the housing 8, which preferably extends linearly.

[0080] The guide element 17b and / or the locking element 15b can be configured to be substantially cylindrical.

[0081] Figure 4b It is shown that the locking element 15b of the support device 13 is in a second locking position, in which the tension of the spring 12 is increased relative to the first locking position of the locking element 15b according to Figure 3a , 3b .

[0082] Figure 4c It is shown that by continuously pressing the actuating element 18, the locking element 15b of the support device 13 can be further guided along the locking profile 15a of the housing 8.

[0083] Figure 4d It is shown that the locking element 15b of the support device 13 is in a third locking position, in which the tension of the spring 12 is increased relative to the first locking position according to Figure 3a , 3b and relative to the second locking position according to Figure 4b .

[0084] In the illustrated embodiment, there are thus three different locking positions of the locking element 15b, which define three different tensions of the spring 12. Of course, a plurality of locking positions of the locking element 15b can also be provided if required.

[0085] It is also possible to provide stepless adjustability of the locking element 15b instead of the predefined locking positions. However, the predefined locking positions have the advantage that the user obtains auxiliary positions for selecting a suitable spring tension and can thus quickly adjust the spring force.

[0086] Figure 4eIt is shown that the release element 14a of the release device 14 has moved in the direction Y transversely to the longitudinal direction L of the spring 12 against the force of the spring element 16. In this way, the locking element 15b can be released from the locking profile 15a of the housing 8. That is, the locking element 15b (together with the support device 13) can be reset from the third locking position by the action of the spring 12 into a position in which the force of the spring 12 has been set to a minimum (see Figure 3a , 3b ).

[0087] Figure 5a A second embodiment of the drive device 5 is shown, which has an adjusting device 20 for adjusting the position of the support device 13 relative to the housing 8.

[0088] According to a possible embodiment, it can be provided that the adjusting device 20

[0089] - has at least one adjusting wheel 20a, 20b, wherein the adjusting wheel 20a, 20b is rotatably arranged on the housing 8 about an axis extending transversely to the longitudinal direction L of the at least one spring 12, and / or has at least one circumferential operating profile 21, which is at least partially arranged outside the housing 8 and is configured for manual operation, and / or

[0090] - has at least one helical guide groove 22, which cooperates with a plurality of spaced-apart projections 23.

[0091] In the illustrated embodiment, the helical guide groove 22 is arranged on the at least one adjusting wheel 20a, 20b, and the projections 23 cooperating with the guide groove 22 are arranged on the support device 13 which can move relative to the housing 9. Of course, the reverse arrangement is also possible here.

[0092] Figure 5b A top view of the drive device 5 according to Figure 5a is shown. The support device 13 is configured to be substantially C-shaped here, and the at least one spring 12 is connected to the support device 13. By rotating the adjusting wheels 20a, 20b, the position of the support device 13 can be adjusted relative to the housing 8 in the direction of the longitudinal direction L of the spring 12 and thus the effective force of the spring 12 can be adjusted.

[0093] The at least one adjusting wheel 20a, 20b can be coupled to the support device 13 via a worm gear drive, wherein the projections 23 arranged on the support device 13 engage in the helical guide grooves 22 of the adjusting wheels 20a, 20b.

[0094] Figure 6aShows a third embodiment of the drive device 5, which drive device has at least one pivot lever 24 for adjusting the position of the support device 13 relative to the housing 8.

[0095] According to a possible embodiment, it may be provided that the at least one pivot lever 24

[0096] —— has at least one handle element 24a, which is arranged outside the housing 8 and is configured for manual operation, and / or

[0097] —— is pivotally supported on the housing 8 about an axis 25, preferably over an angular range of approximately 180°, and / or

[0098] —— is linearly supported on the housing 8 over a limited distance, and / or

[0099] —— is coupled to the at least one support device 13 via at least one coupling device 26, preferably the coupling device 26 has at least one coupling profile 26a and at least one coupling element 26b that can engage into the coupling profile 26a.

[0100] In the illustrated embodiment, the coupling profile 26a is arranged on the support device 13, and the coupling element 26b is arranged on the pivot lever 24. Of course, the reverse arrangement is also possible here.

[0101] By the pivoting movement of the pivot lever 24 about the axis 25 and via the coupling device 26, the position of the support device 13 relative to the housing 8 can be adjusted in a direction extending parallel to the longitudinal direction L of the spring 12.

[0102] Figure 6b Shows a top view of the drive device 5 according to Figure 6a It can be seen that the axis 25 is guided with a clearance in the elongated hole 28 of the pivot lever 24, whereby the pivot lever 24 can be linearly supported on the housing 8 over a limited distance.

[0103] The substantially semi-circular locking profile 15a can have at least one locking section 27a, 27b, 27c, preferably two or more locking sections 27a, 27b, 27c, for releasably locking the pivot lever 24.

[0104] In the present case, three locking sections 27a, 27b, 27c are provided, by means of which the pivot lever 24 can be releasably locked in three different pivot positions and thus three different pretensions of the spring 12 can be adjusted. For locking, the pivot lever 24 is manually moved into one of the locking sections 27a, 27b, 27c.

[0105] The locking section 27a extends substantially parallel to the longitudinal direction L of the at least one spring 12.

[0106] Figures 7a to 7d shows the timing of the spring force for adjusting the drive device 5 according to Figure 6a , 6b .

[0107] Figure 7a shows that the position of the support device 13 relative to the housing 8 can be adjusted by the movement of the pivot lever 24 about the axis 25, wherein the coupling element 26b of the pivot lever 24 can move along the coupling profile 26a of the support device 13 and along the locking profile 15a of the housing 8.

[0108] Figure 7b shows that the pivot lever 24 has been pressed into the locking section 27b. This linear movement can be achieved by the axis 25 movable in the oblong hole 28.

[0109] Figure 7c shows the continued movement of the pivot lever 24 about the axis 25, wherein the coupling element 26b of the pivot lever 24 can move along the locking profile 15a of the housing 8.

[0110] Figure 7d shows the coupling element 26b in the locking section 27a. The locking section 27a extends substantially parallel to the longitudinal direction L of the spring, wherein the coupling element 26b of the pivot lever 24 is pulled into the locking section 27a by the action of the spring 12.

[0111] Figure 8a shows a fourth embodiment of the drive device 5, which drive device has a pivot lever 24 for adjusting the position of the support device 13 relative to the housing 8.

[0112] According to a possible embodiment, it can be provided that the pivot lever 24

[0113] - has at least one handle element 24a, which is arranged outside the housing 8 and is configured for manual operation, and / or

[0114] - is coupled to the at least one support device 13 via at least one coupling device 26, preferably the coupling device 26 has at least one coupling profile 26a and at least one coupling element 26b that can engage into the coupling profile 26a, and / or

[0115] - is pivotally arranged on the support device 13 about the axis 25.

[0116] Figure 8b shows a top view of the drive device 5 according to Figure 8a .

[0117] Figures 9a to 9c shows the timing for adjusting the drive device 5 according to Figure 8a , 8bThe timing of the spring force of the drive device 5, wherein the pivot lever 24 is arranged about the axis 25 on the support device 13.

[0118] Figure 9a It is shown that by manually exerting a force on the pivot lever 24 , the coupling element 26 b of the pivot lever 24 can be moved along the locking contour 15 a .

[0119] Figure 9b Shown, by making the pivot lever 24 move manually about the axis 25, the coupling element 26b of the pivot lever 24 can be moved into the first locking position. If necessary, a locking spring can be used here, which presses the pivot lever 24 towards the locking position.

[0120] Figure 9c It is shown that the coupling element 26b of the pivot lever 24 can be moved into another locking position in which the spring 12 has a greater locking force than in the Figure 9b By moving the pivot lever 24 around the axis 25 and by manually pulling the pivot lever 24, the locking between the pivot lever 24 and the locking contour 15a can be released again.

[0121] Figures 10a to 10c A slightly modified embodiment is shown according to Figure 3a , 3b and Figures 4a to 4e The driving device 5.

[0122] Figure 10a The drive device 5 is shown, which has a housing 8 , a spring 12 for exerting a force on an adjusting device 11 , and a bearing device 13 , via which the at least one spring 12 is supported with one end on the housing 8 .

[0123] The support device 13 can be guided relative to the housing 8 via a guide device 17 , wherein the guide device 17 in the exemplary embodiment shown has two guide elements 17 b that are separate from one another and can be guided along guide rails 17 a .

[0124] The housing 8 has at least one recess 30 for at least partially accommodating the spring element 16 .

[0125] According to a possible embodiment, it can be provided that the release element 14a of the release device 14

[0126] - is arranged substantially flush with the outer surface 31 of the housing 8, and / or

[0127] - has at least one projection 33 for abutting against the spring element 16, and / or

[0128] - can partially sink in the housing 8, and / or

[0129] —— can be arranged in the preferably substantially funnel-shaped recess 32 of the at least one housing (8), and / or

[0130] —— can be movably supported parallel to the fixing surface 29 of the housing 8 ( Figure 3a ), and / or

[0131] —— can be movably supported transversely to the longitudinal direction L of the at least one spring 12.

[0132] To adjust the position of the support device 13 relative to the housing 8, the actuating element 18 is pushed in the longitudinal direction L of the spring 12, wherein the locking element 15b can move along the preferably serrated locking contour 15a against the force of the spring element 16, preferably a compression spring.

[0133] In the illustrated embodiment, the locking element 15b has a corresponding contour matching the locking contour 15a. In Figure 10a it, the locking element 15b is located at the first end of the locking contour 15a, wherein the force of the spring 12 is adjusted to a minimum.

[0134] Figure 10b Another position of the support device 13 relative to the housing 8 is shown, wherein the locking element 15b is located at a tip of the serrated locking contour 15b.

[0135] Figure 10c Yet another position of the support device 13 relative to the housing 8 is shown, wherein the locking element 15b is located at the second end of the locking contour 15a, and the force of the spring 12 is adjusted to a maximum.

[0136] The drive device 5 can be used both for the furniture fitting 4 in the form of a drawer pull-out guide device 4a and for other types of furniture fittings 4, such as furniture hinges or actuators for covers. It can also be used in combination with building fittings for windows or doors, for example.

Claims

1. A drive device (5), preferably a push-out device, for furniture fittings (4) or building fittings, comprising: at least one housing (8); at least one adjusting device (11) movable relative to the housing (8); at least one spring (12) for applying a force to the at least one adjusting device (11), wherein the at least one spring (12) is connected to the at least one adjusting device (11) by a first end; at least one support device (13), via which the at least one spring (12) is supported on the at least one housing (8) by a second end; characterized in that the at least one support device (13) is adjustable relative to the at least one housing (8) over a limited distance.

2. The drive device (5) according to claim 1, wherein the at least one support device (13) is adjustable between a first position and at least one second position, wherein the at least one spring (12) is tensioned more strongly in the second position than in the first position, and there is provided at least one release device (14) by means of which the at least one support device (13) can be reset from the second position to the first position, preferably under the action of the at least one spring (12).

3. The drive device (5) according to claim 2, wherein the at least one release device (14) is movably supported relative to the housing (8) in a direction transverse to the longitudinal direction (L) of the at least one spring (12), the release device (14) having at least one release element (14a) which is arranged outside the housing (8) and / or can sink at least partially into the housing (8) and is configured for manual operation, the at least one support device (13) being movably supported in a direction parallel to the longitudinal direction (L) of the at least one spring (12), the support device (13) having at least one actuating element (18) separated from the at least one release element (14a) of the release device (14), which actuating element is arranged outside the housing (8) and is configured for manual operation, and / or the at least one support device (13) and the at least one release device (14) are configured as two structural units which are movably supported independently of one another on the housing (8), and / or the housing (8) has a fixing surface (29) for abutting against the furniture fitting (4) or for abutting against a furniture part, and the release device (14) has at least one release element (14a) which is movably supported in a plane parallel to the fixing surface (29) of the housing (8).

4. The drive device (5) according to claim 2 or 3, wherein the at least one release device (14) has at least one, preferably serrated, locking profile (15a), and / or It has at least one release position and at least one locking position. In the release position, the release device (14) releases the at least one support device (13), and in the locking position, the release device (14) locks the at least one support device (13). There is at least one spring element (16) which pre-tensions the release device (14) relative to the housing (8) into the locking position. Preferably, the at least one housing (8) has at least one recess (30) for at least partially receiving the spring element (16) and / or at least one release element (14a) of the release device (14) is arranged substantially flush with the outer surface (31) of the housing (8).

5. The drive device (5) according to one of claims 2 to 4, wherein, the at least one release device (14) is movably supported relative to the housing (8) in a direction transverse to the longitudinal direction (L) of the at least one spring (12), and / or has at least one release element (14a) which is arranged outside the housing (8) and / or can sink at least partially into the housing (8) and is configured for manual operation, and / or has at least one release element (14a) which can be moved against the force of the spring element (16) to reset the at least one support device (13), and / or has at least one release element (14a) which can be arranged in a recess (32) of the at least one housing (8), preferably substantially funnel-shaped, and / or has at least one release element (14a) which has at least one projection (33) for abutting against the spring element (16).

6. The drive device (5) according to one of claims 1 to 5, wherein, the at least one support device (13) is movable relative to the housing (8), preferably linearly movable, and / or is movably supported in a direction parallel to the longitudinal direction (L) of the at least one spring (12).

7. The drive device (5) according to one of claims 1 to 6, wherein, the at least one support device (13) can be guided relative to the housing (8) via at least one guiding device (17). Preferably, the at least one guiding device (17) has at least one track (17a) and at least one guiding element (17b) which can engage into the track (17a), and / or is configured substantially in an L-shape or substantially in a U-shape, and / or has at least one operating element (18) which is arranged outside the housing (8) and is configured for manual operation. Preferably, the at least one operating element (18) has a longitudinal extension which extends transversely or obliquely to the longitudinal direction (L) of the at least one spring (12).

8. The drive device (5) according to one of claims 1 to 7, wherein, There is provided at least one locking device (15) by means of which the at least one supporting device (13) can be releasably locked to the at least one housing (8), preferably the locking device (15) has at least one locking profile (15a) and at least one locking element (15b) which can engage into the locking profile (15a).

9. The drive device (5) according to claim 8, wherein, the locking element (15b) is arranged on the at least one supporting device (13), and / or the locking element (15b) is configured to be substantially cylindrical or has a corresponding profile matching the locking profile (15a), and / or there is provided at least one guide rail (19) arranged on the housing (8) in which the locking element (15b) can be guided.

10. The drive device (5) according to claim 8 or 9, wherein, the locking profile (15a) is movable relative to the housing (8), preferably linearly movable, and / or is movable relative to the housing (8) against the force of a spring element (16).

11. The drive device (5) according to any one of claims 8 to 10, wherein, the locking profile (15a) is movable in a direction transverse to the movement direction of the supporting device (13), and / or is configured to be serrated, wavy or semi-circular, and / or has at least one locking section (27a) which extends substantially parallel to the longitudinal direction (L) of the at least one spring (12).

12. The drive device (5) according to any one of claims 1 to 11, wherein, there is provided at least one adjusting device (20) by means of which the supporting device (13) can be adjusted relative to the housing (8), preferably the adjusting device (20) has at least one adjusting wheel (20a, 20b), wherein the adjusting wheel (20a, 20b) is rotatably arranged on the housing (8) about an axis extending transverse to the longitudinal direction (L) of the at least one spring (12), and / or has at least one circumferential operating profile (21) which is at least partially arranged outside the housing (8) and is configured for manual operation, and / or has at least one helical guide chute (22) which cooperates with a plurality of spaced-apart protrusions (23).

13. The drive device (5) according to any one of claims 1 to 12, wherein, there is provided at least one pivot rod (24) by means of which the supporting device (13) can be adjusted relative to the housing (8).

14. The drive device (5) according to claim 13, wherein, the at least one pivot rod (24) has at least one handle element (24a) which is arranged outside the housing (8) and is configured for manual operation, and / or is pivotally supported on the housing (8) or on the supporting device (13) about an axis (25), preferably over an angular range of about 180°, and / or is linearly supported on the housing (8) over a limited distance, and / or coupled to the at least one support device (13) via at least one coupling device (26), preferably the coupling device (26) having at least one coupling profile (26a) and at least one coupling element (26b) engageable in the coupling profile (26a).

15. A furniture fitting (4) or a building fitting having at least one drive device (5) according to one of claims 1 to 14.

16. A piece of furniture (1), having a furniture body (2), a furniture part (3) movably supported relative to the furniture body (2) and having at least one drive device (5) according to one of claims 1 to 14 or having at least one furniture fitting (4) according to claim 15 for driving the movably supported furniture part (3) relative to the furniture body (2).

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